KR20230044164A - Dust collector and vacuum cleaner having the same - Google Patents

Abstract

The present invention provides a dust collection device and a vacuum cleaner equipped with the same. The dust collection device comprises: a primary cyclone unit formed to separate dust from air introduced from the outside; and a secondary cyclone unit composed of a set of axial flow cyclones that separates fine dust from air flowing in the axial direction. The set includes: casings each forming an outer wall around a hollow portion; and a fine dust separation member disposed on the casings and forming the axial flow cyclones together with the casings. The fine dust separation member includes: vortex finders disposed respectively inside the casings; band parts formed to surround the outer peripheral surface of each vortex finder at a position spaced apart from each vortex finder and having a shape corresponding to the casings so as to be seated on the casings and form the outer walls of each axial flow cyclone together with the casings; and guide vanes disposed between the vortex finders and the band parts, connected to the vortex finders and the band parts, and extending along the helical direction. It is possible to solve the problems of poor performance and process inconvenience.

Description

Dust collector and vacuum cleaner having the same {DUST COLLECTOR AND VACUUM CLEANER HAVING THE SAME}

The present invention relates to a dust collector for a vacuum cleaner configured to separate and collect dust and fine dust from air using a multi-cyclone.

A vacuum cleaner is a device that sucks in air by using a suction force, separates dust or fine dust contained in the air from the air, and discharges clean air.

Types of vacuum cleaners may be classified into i) canister type, ii) upright type, iii) hand type, and iv) cylindrical floor type.

A canister-type vacuum cleaner is the most commonly used vacuum cleaner in homes today, and is a vacuum cleaner in which a suction nozzle and a cleaner body are communicated through a connecting member. The canister type is suitable for cleaning hard floors because it cleans only with suction power.

On the other hand, the upright-type vacuum cleaner is a vacuum cleaner in which a suction nozzle and a cleaner body are integrally formed. Since the upright-type vacuum cleaner includes a rotating brush, it can clean dust in the carpet, unlike the canister-type vacuum cleaner.

Cyclones used in vacuum cleaners may be classified into a tangential flow cyclone and an axial cyclone according to an air flow direction.

The structure of the tangential inflow cyclone can be found in Korean Patent Registration No. 10-0673769 (hereinafter referred to as Patent Document 1). According to Patent Document 1, a tangential inlet cyclone is equipped with a tangential guide to form a spiral flow. In the case of a tangential inlet cyclone, air is introduced in a tangential direction of the outer circumference through a structure such as a tangential guide, and the spiral flow is formed by a structure in which air is introduced in the tangential direction. The tangential inlet type cyclone has the advantage of a simple structure and is advantageous in circular arrangement, so that it is suitable for installation in a limited space such as a vacuum cleaner. On the other hand, the tangential inflow cyclone has a disadvantage in that a large pressure loss occurs due to high-speed flow eccentric to one side.

The structure of the axial flow type cyclone can be found in Korean Patent Publication No. 10-2010-0061320 (hereinafter referred to as Patent Document 2). According to what is disclosed in Patent Document 2, an axial flow type cyclone is provided with spiral blades for forming a spiral flow. In the case of the axial flow type cyclone, the flow flows in the axial direction, and the axial flow type cyclone uses spiral blades to generate swirling flow. The axial flow type cyclone has the advantage of a proper flow rate and uniform suction compared to the tangential flow type cyclone, and thus has the advantage of a small pressure loss. On the other hand, the axial flow type cyclone has a disadvantage in that it is difficult to manufacture a guide vane.

In this way, in order to reduce the pressure loss as much as possible and improve the overall efficiency of the vacuum cleaner, it is preferable to use an axial flow type cyclone. However, conventional vacuum cleaners using axial flow cyclones have the following problems.

First, as disclosed in Patent Document 2, in conventional vacuum cleaners having a plurality of axial flow cyclones, a plurality of separately manufactured axial flow cyclones gather to separate dust or fine dust. Axial flow cyclones are produced separately from molds of the same shape so that they have the same shape as each other. Since each of the axial flow cyclones produced in the mold has a gap between the outer wall and the spiral blade or between the guide vanes, the separation performance is unavoidably deteriorated due to the structure.

In addition, since the vacuum cleaner is an industrial product, each axial flow type cyclone goes through an assembly process after mass production. The axial flow cyclones disclosed in Patent Document 2 are also expected to undergo the same process. Each axial flow type cyclone is formed by separately producing a vortex finder having a guide vane and an outer wall, and then inserting and assembling the vortex finder inside the outer wall. Therefore, there was a cumbersome process of assembling each axial flow type cyclone.

Furthermore, the axial flow type cyclones produced in the mold had a disadvantage in that they did not have a complex shape to realize high separation performance. Axial flow cyclones are generally produced by upper and lower molds, but the reason why axial flow cyclones are difficult to have complex shapes is due to limitations in production in molds.

A first object of the present invention is to provide a plurality of axial flow cyclones formed by integral members and a dust collector including the same in order to solve problems such as deterioration in separation performance due to separate production of axial flow cyclones and cumbersome process. is to propose

A second object of the present invention is to propose a dust collector having axial flow type cyclones having a structure in which an outer wall and a guide vane are connected to each other to solve the problem of deterioration in separation performance of the dust collector caused by a gap between the outer wall and the guide vane.

A third object of the present invention is to propose a dust collector having axial flow type cyclones having a structure in which guide vanes overlap each other in one direction to solve the problem of deterioration in separation performance of the dust collector caused by the gap between guide vanes. will be.

A fourth object of the present invention is to propose a coupling structure between an integral member and a case to simplify the assembly process of axial flow cyclones.

A fifth object of the present invention is to propose a dust collector having an integral auxiliary member capable of supplementing the separation performance of the integral member.

A dust collector according to a first embodiment of the present invention includes a cyclone part composed of a set of axial flow cyclones that separate fine dust from air introduced in an axial direction, and the set of axial flow type cyclones separates fine dust from casings. It is formed by combining elements. The fine dust separation member is a single member (or integral member) including vortex finders, band parts, and guide vanes, and the fine dust separation member and the casings are combined to form a set of axial flow cyclones. There are characteristics of the invention.

This feature is different from a conventional structure in which a vortex finder having a guide vane is combined with a casing to form individual axial flow cyclones, and then the individual axial flow cyclones are gathered to form a set of axial flow cyclones. In the present invention, since the fine dust separation member, which is a single member, includes vortex finders, band parts, and guide vanes, a set of axial flow type cyclones is formed only by combining the fine dust separation member and the casings, and is simpler than the conventional configuration. Assembly process can be implemented.

The vortex finders of the fine dust separating member are disposed inside each of the casings, and each of the casings forms an outer wall around the hollow part. Therefore, it can be understood that the vortex finders are disposed in the hollows of the casings.

The band parts are formed to surround the outer circumferential surface of each vortex finder at a position spaced apart from each vortex finder, and are seated on the casings to form outer walls of each axial flow type cyclone together with the casings. Shapes corresponding to the casings have The band parts and the casing form the outer walls of the axial flow type cyclones together as if they were one part in that they are separate parts but have shapes corresponding to each other. Since each of the band parts is spaced apart from each of the vortex finders and has a shape corresponding to the casings, it may be understood that the casings are also spaced apart from the vortex finders.

Finally, guide vanes are disposed between the vortex finders and the band parts, are connected to the vortex finders and the band parts, and extend along a spiral direction. Accordingly, the vortex finders and the band parts that are spaced apart from each other are connected by the guide vanes, and it can be understood that the outer walls of the axial flow type cyclones and the vortex finders are connected by the guide vanes.

The structure of the axial flow type cyclone of the present invention thus formed is different from the structure of the conventional axial flow type cyclone. In the case of the conventional axial flow type cyclone, since the vortex finder and the outer wall are spaced apart from each other, there is a problem of deterioration in separation performance due to the gap. On the other hand, since the vortex finder and the outer wall of the axial flow cyclone of the present invention are connected to each other by guide vanes, there is no gap between them, and separation performance degradation due to the gap does not occur. Therefore, the separation performance of the axial flow type cyclone of the present invention can be expected to be improved compared to the prior art.

The axial flow type cyclones of the present invention may be applied as a secondary cyclone unit of a dust collector including a primary cyclone unit and a secondary cyclone unit. The primary cyclone unit is formed to separate dust from air introduced from the outside, and the secondary cyclone unit consists of a set of axial flow cyclones and is formed to separate fine dust from the air. Here, the concept of a multi-cyclone including a primary cyclone unit and a secondary cyclone unit may be introduced.

One side of the guide vanes may be connected to outer circumferential surfaces of the vortex finders along a spiral direction, and other sides of the guide vanes may be connected to inner circumferential surfaces of the band parts along a spiral direction. In addition, the guide vanes may extend from lower ends of the band parts to upper ends of the band parts along a spiral direction to form the same height as the band parts. According to this structure, since there is no gap at all between the guide vanes and the band parts, the problem of deterioration in separation performance due to the gap can be solved.

The axial flow cyclones may be classified into first axial flow cyclones and second axial flow cyclones according to positions. The first axial flow cyclone is disposed at the center, and the second axial flow cyclones are radially disposed about the first axial flow cyclone. The first axial-flow cyclones are singular in that they are centrally arranged, while the second axial-flow cyclones are plural in that they are radially arranged.

The band part of the first axial flow type cyclone and the band part of the second axial flow type cyclones may be connected to each other, so that the band parts are connected to each other to form a single member or an integrated member. Furthermore, a flow path for air and fine dust is formed between the band part of the first axial flow type cyclone and the band parts of the second axial flow type cyclones, so that air and fine dust flow from the primary cyclone part to the secondary cyclone part without a separate flow path structure. can flow

The fine dust separation member includes an outer band portion, and the outer band portion is formed to surround the band portions of the second axial flow cyclones, forms an edge of the fine dust separation member, and is connected to the band portions of the second axial flow cyclones. A flow path for air and fine dust is formed between the band parts of the second axial flow type cyclones and the outer band part, so that air and fine dust can flow from the primary cyclone part to the secondary cyclone part without a separate flow path structure. The outer band part forms the outer wall of the secondary cyclone part together with the casings. The outer band portion may be classified as an optional configuration according to design, but it is preferable that the fine dust separation member include an outer band portion in order to stably couple the inner case and the fine dust separation member.

The dust collector includes an outer case and an inner case, and the fine dust separating member is formed to be seated in the inner case. The outer case forms the exterior of the dust collector and the outer wall of the primary cyclone unit. The inner case includes an inner case installed inside the outer case to surround the casings and the outer band portion and having a stepped portion formed along an inner circumferential surface to support the outer band portion.

Since the casings are fixed to the inner case, arbitrary relative rotation of the fine dust separation member and the inner case means relative rotation of the fine dust separation member and the casings. Therefore, when the fine dust separation member is arbitrarily rotated relative to the inner case, the structure of the axial flow type cyclones is deformed. The fine dust separation member is seated on the stepped portion, and the fine dust separation member and the inner case are configured to prevent arbitrary relative rotation using a position fixing groove and a position fixing protrusion.

A dust collector according to a second embodiment of the present invention includes a fine dust separation member and an auxiliary member, and a set of axial flow type cyclones is formed by combining casings, the fine dust separation member and the auxiliary member. The casings and the fine dust separating member are the same as in the first embodiment, and the auxiliary member is configured to assist the function of the fine dust separating member.

The auxiliary member is seated on the fine dust separation member, and includes cover parts, auxiliary band parts, and auxiliary guide vanes. The cover parts are formed to cover outer circumferential surfaces of each vortex finder to prevent coupling and arbitrary relative rotation of the auxiliary member and the fine dust separation member. Further, the cover parts may be understood as forming outer walls of the vortex finders in that they cover the outer circumferential surfaces of the vortex finders.

The auxiliary band parts are for assisting the band parts of the fine dust separation member, and are formed to surround the outer circumferential surface of each cover part at a position spaced apart from each cover part, and are seated on the band parts, together with the casings and the band parts. It has a shape corresponding to the band parts to form the outer walls of the axial flow type cyclones. The auxiliary band parts, the band parts, and the casing form the outer walls of the axial flow type cyclones together as if they were one part in that they are separate parts but have shapes corresponding to each other.

Finally, the auxiliary guide vanes are for assisting the guide vanes of the fine dust separation member, one side of the auxiliary guide vanes is connected to the outer circumferential surface of the cover parts along the spiral direction, and the other side is connected to the inner circumferential surface of the auxiliary band parts along the spiral direction. Connected. Accordingly, the cover parts and the auxiliary band parts that are spaced apart from each other are connected by the auxiliary guide vanes, and it can be understood that the outer walls of the axial flow cyclones and the outer walls of the vortex finders are connected by the auxiliary guide vanes.

Like the fine dust separation member, each of the auxiliary guide vanes continuously extends along a spiral direction in contact with each of the guide vanes. In addition, each auxiliary guide vane is formed to be in surface contact with each of the guide vanes. Although the fine dust separation member and the auxiliary member are separate parts, the guide vanes and the auxiliary guide vanes continuously extend along the spiral direction and form spiral blades as if they were one part by a structure in which they are in surface contact with each other.

Accordingly, an overlap structure that cannot be formed in a single part manufactured in a mold can be implemented. The guide vanes include a first guide vane and a second guide vane disposed adjacent to each other, and the auxiliary guide vanes include: a first auxiliary guide vane that continuously extends along a spiral direction in contact with the first guide vane; and a second auxiliary guide vane continuously extending along a spiral direction in contact with the second guide vane, wherein the first auxiliary guide vane and the second guide vane are coupled to the fine dust separation member and the auxiliary member. It is the overlap structure that overlaps each other along the direction. According to the overlap structure, it is possible to form a high-speed swirling flow, and the separation performance of the dust collector can be improved.

The fine dust separation member includes support parts forming steps along outer circumferential surfaces of the vortex finders, the fine dust separation member includes support parts forming steps along outer circumferential surfaces of the vortex finders, and the cover parts support the support Each has a shape corresponding to the support portion so as to be seated on the portion. Due to this structure, the fine dust member and the auxiliary member may be coupled.

The fine dust separating member is thicker than the auxiliary member. The thickness of the fine dust separation member and the auxiliary member affects the separation performance and efficiency of the dust collector. The auxiliary member serves to assist the fine dust separation member, and when the auxiliary member is formed excessively thick, a decrease in efficiency occurs due to pressure loss. Therefore, the auxiliary member is formed thinner than the fine dust separating member. On the other hand, the fine dust separation member has a main function of separating fine dust from the air and is thicker than the auxiliary member for high separation performance.

The set of axial flow cyclones may be divided into first axial flow cyclones and second axial flow cyclones according to positions. The first axial flow cyclone is disposed at the center, and the second axial flow cyclones are radially disposed around the first axial flow cyclone. Since the first axial flow type cyclones are disposed at the center, they are provided in a singular number, and since the second axial flow type cyclones are arranged radially, they are provided in plural numbers. The auxiliary member includes an auxiliary outer band having a shape corresponding to the outer band to be seated on an upper portion of the outer band. The auxiliary outer band part is for forming an auxiliary member as a single member (or integral member), and the outer band part and the auxiliary outer auxiliary band part together with the casings form an outer wall of the secondary cyclone.

The dust collector of the present invention may constitute an extended embodiment from the first and second embodiments. The primary cyclone part of the dust collector is made up of an outer case, an inner case, and a mesh filter. The outer case forms the exterior of the dust collector and forms the outer wall of the primary cyclone unit. The inner case is disposed inside the outer case and forms an inner wall of the primary cyclone unit. Since the secondary cyclone unit is disposed inside the inner case, the inner case forms a boundary between the primary cyclone unit and the secondary cyclone unit. The mesh filter is installed to cover the openings of the inner case, and the mesh filter also forms a boundary between the primary cyclone unit and the secondary cyclone unit.

The inner case may be made of a single member or may be made of at least two or more members. When the inner case is composed of two members, the first member includes a side boundary portion formed to surround at least a part of the secondary cyclone unit, an upper boundary portion extending in a circumferential direction from an upper end of the side boundary portion toward the inner circumferential surface of the outer case, and a first member. It includes a skirt portion extending in a circumferential direction from a lower end of the outer case toward an inner circumferential surface, a plate portion formed inside the skirt portion, and connecting portions connecting the side boundary portion and the skirt portion.

The second member may include an accommodating part configured to accommodate fine dust outlets of the axial flow type cyclones, and a dust collecting part boundary forming a boundary between the first dust collecting part and the second dust collecting part.

The mesh filter is coupled to an opening formed between the side boundary portion and the skirt portion, and is formed in a mesh or porous form. The weight criterion for distinguishing dust from fine dust is determined by the separation performance of the primary cyclone part and the secondary cyclone part, and the size criterion may be determined by the mesh filter.

The secondary cyclone unit may be formed by a set of axial flow cyclones described above. The axial flow type cyclones may be disposed inside the primary cyclone unit or radially along an outer circumferential surface of the primary cyclone unit.

The dust collector includes a first dust collection unit configured to collect dust separated by the primary cyclone unit and a second dust collection unit configured to collect fine dust separated by the secondary cyclone unit.

The first dust collecting unit may be defined and formed by a compartment and a receiving unit forming an upper wall, an outer case forming an outer wall, a dust collecting unit boundary forming an inner wall, and a lower cover forming a floor. The partitioning part is formed along the inner circumferential surface of the outer case, and based on the partitioning part, the upper part of the partitioning part is divided into a primary cyclone part and the lower part of the partitioning part is divided into a first dust collection part.

A pressure unit is installed in the first dust collecting unit to compress the dust collected in the first dust collecting unit. The pressing unit includes a rotating shaft, a pressing member, a fixing part, a first driven gear, a power transmission rotating shaft, and a second driven gear. The driving force generated by the drive motor of the cleaner body is transmitted to the first driven gear of the dust collector through the main gear of the cleaner body, and is then sequentially transmitted to the rotation shaft through the power transmission rotation shaft and the second driven gear. As the rotating shaft rotates, the pressing member also rotates, thereby compressing the dust.

The second dust collecting unit is defined by the dust collecting unit boundary forming the side wall and the lower cover forming the bottom. Depending on the design, a pressurizing unit may be installed in the second dust collecting unit, and the pressurizing unit installed in the second dust collecting unit may be configured to share a driving force with the pressing unit installed in the first dust collecting unit.

According to the present invention having the above configuration, the vortex finders, the band parts, and the guide vanes are integrally formed as members (fine dust separation members), and the axial flow type cyclones are formed by combining casings and integral members, so that each cyclone It can solve the problem of performance degradation and process hassle caused by separate production.

In addition, the present invention, since the band portion of the integral member and the guide vane are connected, it is possible to solve the problem of deterioration in separation performance caused by the gap. Likewise, the problem of deterioration in separation performance caused by the gap between the guide vanes can be solved through an overlapping structure of the fine dust separation member and the auxiliary member, which are two integral members.

In addition, the present invention (1) the coupling structure of the fine dust separation member to the inner case implemented by the positioning protrusion and the positioning groove (2) the coupling structure of the fine dust separation member and the auxiliary member implemented by the vortex finder and the cover unit Through this, it is possible to easily disassemble and assemble the dust collector.

In addition, the present invention can improve the efficiency of the dust collector using the fine dust separation member and improve the separation performance of the dust collector using the auxiliary member.

1 is a perspective view showing an example of a vacuum cleaner according to the present invention.
2 is a conceptual diagram of a dust collector according to a first embodiment of the present invention.
3 is an exploded perspective view of the dust collector shown in FIG. 2;
4 is a longitudinal cross-sectional view of the dust collector of FIG. 2 cut along line AA.
5 is a perspective view of the fine dust separating member shown in FIGS. 3 and 4;
6 is an exploded perspective view of a dust collector according to a second embodiment of the present invention.
7 is a perspective view of the fine dust separation member and the auxiliary member shown in FIG. 6 .
FIG. 8 is a conceptual view partially showing a coupled state of the fine dust separation member and the auxiliary member shown in FIG. 6 .
9 is a plan view of the fine dust separation member and the auxiliary member shown in FIG. 6 .

1 is a perspective view showing an example of a vacuum cleaner 10 according to the present invention.

The cleaner body 11 and the dust collector 100 form the exterior of the vacuum cleaner 10 . Wheels 12 are installed on both sides of the cleaner body 11 to implement sliding movement of the cleaner body 11 . A suction motor (not shown) and a suction fan (not shown) rotated by the suction motor to generate suction power are installed inside the cleaner body 11 .

Although not shown, the vacuum cleaner 10 further includes a suction nozzle (not shown) for sucking air containing foreign substances and a connecting member (not shown) connecting the suction nozzle to the cleaner body 11 . In the present invention, since the basic configuration of the suction nozzle and the connecting member is the same as in the prior art, a description thereof will be omitted.

A suction part 13 for sucking air sucked through the suction nozzle and foreign substances included in the air is formed at a lower front portion of the cleaner body 11 . Air and foreign substances are introduced into the suction part 13 by the operation of the suction motor and the suction fan. Air and foreign substances introduced into the suction unit 13 are introduced into the dust collector 100 through the inlet side cleaner internal flow path 14 and the inlet 111 of the dust collector 100, and in the dust collector 100 are separated from each other Then, the air separated from the foreign matter exits the dust collector 100 through the outlet 141 of the dust collector 100 and the internal passage 15 of the outlet-side cleaner.

For reference, in the present specification, foreign substances contained in the air are classified into dust, fine dust, and ultrafine dust. Relatively large dust is referred to as "dust", relatively small dust is referred to as "fine dust", and dust smaller than "fine dust" is referred to as "ultrafine dust".

The dust collector 100 is detachably attached to the cleaner body 11 . The dust collector 100 separates and collects foreign substances from the sucked air, and discharges the air separated from the foreign substances.

Openings may be formed at the lower and upper ends of the outer case 110 , respectively. The lower cover 130 is coupled to the lower end of the outer case 110, and the upper cover 140 is coupled to the upper end.

The lower cover 130 is installed to be able to open and close the lower opening of the outer case 110 . The lower cover 130 may be detachably installed on the outer case 110 .

The upper cover 140 is installed to be able to open and close the top opening of the outer case 110 . The upper cover 140 may also be detachably installed on the outer case 110 . A handle 142 is rotatably installed on the upper cover 140 . The user may carry the dust collector 100 by separating the dust collector 100 from the cleaner body 11, rotating the handle 142, and holding the dust collector 100 in the hand.

Hereinafter, the dust collectors 100 and 200 of the present invention will be described in detail.

The dust collectors 100 and 200 to be described below show the dust collectors 100 and 200 applied to the canister-type vacuum cleaner 10, but the dust collectors 100 and 200 of the present invention are necessarily canister-type vacuum cleaners. It is not limited only to (10). The dust collectors 100 and 200 of the present invention may also be applied to an upright type vacuum cleaner 10 .

I. Example 1

2 is a conceptual diagram of a dust collector 100 according to a first embodiment of the present invention. FIG. 3 is an exploded perspective view of the dust collector 100 shown in FIG. 2 . 4 is a longitudinal cross-sectional view of the dust collector 100 of FIG. 2 cut along the line A-A.

1. Appearance of dust collector 100

The exterior of the dust collector 100 is composed of an outer case 110, a lower cover 130 and an upper cover 140.

(1) outer case (110)

The outer case 110 forms a side appearance of the dust collector 100 . The outer case 110 forms an outer wall of the primary cyclone unit 101, and the outer case 110 is formed in a cylindrical shape as shown in FIG. 2 to form swirl flow in the primary cyclone unit 101 it is desirable However, unlike the inner circumferential surface of the outer case 110, the outer circumferential surface does not have to be formed in a cylindrical shape.

An inlet 111 of the dust collector 100 is formed in the outer case 110 . Air and foreign substances introduced through the suction part 13 described in FIG. 1 flow along the flow path inside the cleaner body 11, and pass through the inlet 111 to the inside of the outer case 110 of the dust collector 100. flowed into

The inlet 111 may be formed along the tangential direction of the outer case 110 and may be formed to extend toward the inner circumference of the outer case 110 . The reason why the inlet 111 has this structure is to cause a swirling motion of air and foreign matter. The air and foreign substances introduced into the outer case 110 along the tangential direction through the inlet 111 rotate along the inside of the outer case 110 .

The inlet 111 may protrude from the outer case 110 to be connected to a flow path inside the cleaner body 11 . If the flow path inside the cleaner body 11 has a shape corresponding to the outer circumferential surface of the outer case 110, the inlet 111 may have a structure that does not protrude from the outer case 110.

Openings may be formed at the lower and upper ends of the outer case 110 , respectively. The lower cover 130 is coupled to the lower end of the outer case 110, and the upper cover 140 is coupled to the upper end.

(2) lower cover (130)

The lower cover 130 forms the bottom of the dust collector 100. The circumference of the lower cover 130 is formed to correspond to the circumference of the outer case 110 , and the lower cover 130 covers the lower opening of the outer case 110 .

The lower cover 130 is rotatably coupled to the outer case 110 to open and close the lower opening of the outer case 110 . In this embodiment, it is shown that the lower cover 130 is hinged to the outer case 110 (115, 131), configured to open and close the lower opening of the outer case 110 according to rotation. However, the present invention is not limited thereto, and the lower cover 130 may be completely detachably coupled to the outer case 110 .

The lower cover 130 remains coupled to the outer case 110 through the hook coupling part 132 . The hook coupling part 132 is formed on the opposite side of the hinge 131 based on the center of the lower cover 130 . The hook coupling portion 132 is made to be inserted into the groove 116 formed on the outer circumferential surface of the outer case 110, and in order for the lower cover 130 to rotate by the hinge 131, the hook coupling portion 132 is It must be withdrawn from the groove 116 of the case 110.

Inside the dust collecting device 100, a first dust collecting part 103 and a second dust collecting part 104, which will be described later, are formed, and the lower cover 130 is the bottom surface of the first dust collecting part 103 and the second dust collecting part 104. is configured to form Accordingly, the lower cover 130 can be rotated by the hinge 131 to simultaneously open the first dust collecting part 103 and the second dust collecting part 104 . When the lower cover 130 is rotated by the hinge 131 and the first dust collecting part 103 and the second dust collecting part 104 are simultaneously opened, dust and fine dust can be discharged at the same time. Accordingly, since dust and fine dust are simultaneously discharged through a one-time operation of opening the lower cover 130, user convenience of the dust collector 100 or the vacuum cleaner 10 may be improved.

A sealing member 133 may be coupled to the circumference of the lower cover 130 . The sealing member 133 may be formed in a ring shape that surrounds the circumference of the lower cover 130, and seals between the outer cases 110 to prevent dust or fine dust collected inside the dust collector 100 from leaking. done to do

(3) top cover 140

The upper cover 140 is formed to cover the top opening of the outer case 110 and is coupled to the top of the outer case 110 . The circumference of the upper cover 140 is formed to correspond to the circumference of the outer case 110 .

The upper cover 140 is disposed to face the cover member 150 disposed inside the outer case 110 . The upper cover 140 is spaced apart from the cover member 150 and forms a discharge passage through which air discharged from the secondary cyclone unit 102 is discharged to the outside of the dust collector 100 . An outlet 141 of the dust collector 100 is formed in the upper cover 140, and air is discharged through the outlet 141.

Air discharged through the outlet 141 of the dust collector 100 may be discharged to the outside through an exhaust port (not shown) of the cleaner body 11 . A porous filter (not shown) configured to filter ultra-fine dust from the air may be installed in a passage leading from the outlet 141 of the dust collector 100 to the exhaust port of the cleaner body 11 .

A handle 142 may be rotatably coupled to the upper cover 140 . The handle 142 may be formed along the outer circumference of the upper cover 140 . For example, as shown in the drawing, the handle 142 may be formed in a semicircular or arcuate shape along the outer circumference of the upper cover 140 . When the user wants to separate the dust collector 100 from the cleaner body 11, the user can lift the dust collector 100 by rotating the handle 142 after releasing the coupling between the cleaner body 11 and the dust collector 100.

2. Internal configuration of the dust collector 100

(1) Primary cyclone unit 101

A cyclone refers to a device that separates foreign substances from air by centrifugal force by forming swirling flow in air and foreign substances. Foreign matter includes dust, fine dust, and ultra-fine dust. Since the weight of the air and the weight of the foreign matter are different, the radius of rotation of the air and the radius of rotation of the foreign matter due to centrifugal force are different from each other. The cyclone separates foreign substances such as dust and fine dust from the air by using the difference in the radius of rotation caused by the centrifugal force.

The primary cyclone unit 101 is formed inside the outer case 110 and is formed to separate dust from air introduced from the outside. The primary cyclone unit 101 is formed by an outer case 110, inner cases 121 and 122, and a mesh filter 127.

1) Outer case (110)

An inner circumferential surface of the outer case 110 forms an outer wall of the primary cyclone unit 101 . Dust that is heavier than air and fine dust rotates in a swirling flow while drawing a larger radius of rotation than air or fine dust. Since the dust rotates within a region defined by the inner circumferential surface of the outer case 110 , the maximum radius of rotation of the dust is defined by the inner circumferential surface of the outer case 110 .

2) Inner case (121, 122)

The inner cases 121 and 122 are installed inside the outer case 110 and may partially have a cylindrical shape. Since the primary cyclone unit 101 is formed on the outside of the inner cases 121 and 122 and the secondary cyclone unit 102 is formed on the inside of the inner cases 121 and 122, the inner cases 121 and 122 are It forms a boundary between the primary cyclone unit 101 and the secondary cyclone unit 102. The inner cases 121 and 122 are disposed directly below the cover member 150 , and the cover member 150 is disposed to cover the open upper ends of the inner cases 121 and 122 .

The inner cases 121 and 122 may be formed by combining the first member 121 and the second member 122, or may be formed with only one member. Hereinafter, the inner cases 121 and 122 are described based on the fact that they are formed by combining the first member 121 and the second member 122, but are not necessarily limited thereto.

The first member 121 includes a side boundary portion 121a, an upper boundary portion 121b, a skirt portion 121d, a plate portion 121e, and connection portions 121f. The second member 122 will be described later in items related to the first dust collecting unit 103 and the second dust collecting unit 104.

The side boundary portion 121a is formed to surround at least a portion of the secondary cyclone unit 102 and has a ring shape opened to accommodate the axial flow type cyclones 102a and 102b of the secondary cyclone unit 102 . The side boundary portion 121a corresponds to a side boundary between the primary cyclone unit 101 and the secondary cyclone unit 102 .

The upper boundary portion 121b extends from the upper end of the side boundary portion 121a toward the inner circumferential surface of the outer case 110 in a circumferential direction. The upper boundary portion 121b contacts the inner circumferential surface of the outer case 110 along the circumferential direction to form the upper boundary of the primary cyclone portion 101 . A sealing member (not shown) may be coupled to the circumference of the upper boundary portion 121b. The sealing member may be formed in a ring shape surrounding the circumference of the upper boundary portion 121b, and seals between the inner circumferential surface of the outer case 110 and the upper boundary portion 121b to prevent leakage of dust.

A protrusion 121c facing the cover member is formed on the upper boundary portion 121b. The protrusion 121c is formed to be inserted into the groove 152 of the cover member, and the positions of the protrusion 121c and the groove 152 may be interchanged. As the protrusion 121c of the upper boundary portion 121b is inserted into the groove 152 of the cover member 150, the relative positions of the first member 121 and the cover member 150 may be set.

The skirt portion 121d extends from the lower end of the first member 121 toward the inner circumferential surface of the outer case 110 in a circumferential direction. The skirt part 121d is to prevent dust separated from the air by the primary cyclone part 101 from scattering.

Unlike the upper boundary portion 121b, the skirt portion 121d is spaced apart from the inner circumferential surface of the outer case 110. As the skirt portion 121d is spaced apart from the inner circumferential surface of the outer case 110, an annular passage is formed between the inner circumferential surface of the outer case 110 and the skirt portion 121d. Dust separated from the air by the primary cyclone unit 101 moves to the first dust collection unit 103 along this passage.

The plate portion 121e is formed inside the skirt portion 121d. A through hole 121i accommodating lower ends of the axial flow type cyclones 102a and 102b (more specifically, lower ends of the casings 125 to be described later) is formed in the plate portion 121e. The plate part 121e is to prevent the fine dust discharged from the fine dust outlets 141 of the axial flow type cyclones 102a and 102b from entering the secondary cyclone part 102 again. The plate portion 121e and the skirt portion 121d may be formed at substantially the same height, but are not necessarily limited thereto.

One end of the connection parts 121f is connected to the side boundary part 121a, and the other end is connected to the skirt part 121d or the plate part 121e. The other ends of the connecting portions 121f may be disposed at a boundary between the skirt portion 121d and the plate portion 121e. The connection parts 121f are spaced apart from each other along the outer circumference of the first member 121 .

The side boundary portion 121a and the connection portions 121f may be inclined to become narrower toward the bottom. This is to induce the fall of dust separated from the air by the primary cyclone unit 101 . If the side boundary portion 121a and the connection portions 121f are formed along the vertical direction, they may act as an obstacle in the process of dust falling. However, as shown in the drawing, when the side boundary portion 121a and the connecting portions 121f are inclined, they do not act as obstacles in the process of dust falling, so that the dust can fall smoothly. The mesh filter 127 may also be inclined for the same reason.

3) Mesh filter (127)

As the connection parts 121f are spaced apart from each other, openings 123 are formed in the area defined by the side boundary part 121a, the connection parts 121f, and the skirt part 121d (or the plate part 121e). do. A mesh filter 127 is installed on the first member 121 to cover these openings 123 . The mesh filter 127 may be provided in singular or plural numbers.

The mesh filter 127 has a mesh or porous shape to separate dust from air introduced into the inner cases 121 and 122 . A size criterion for distinguishing dust from fine dust may be determined by the mesh filter 127 . Foreign substances having a size that passes through the mesh filter 127 may be classified as fine dust, and foreign substances having a size that does not pass through the mesh filter 127 may be classified as dust.

(2) first dust collection unit (103)

1) Configuration of the first dust collection unit 103

The first dust collection unit 103 is formed to collect dust separated from the air by the primary cyclone unit 101 . The first dust collector 103 refers to a space defined by the compartment 112 , the outer case 110 , the inner cases 121 and 122 and the lower cover 130 .

Inside the outer case 110, a partition 112 is formed along the inner circumferential surface of the outer case 110 to partition the upper and lower parts of the outer case 110. The compartment 112 may be integrally formed with the outer case 110 .

The partition part 112 forms the upper side wall of the first dust collecting part 103 . The compartment 112 extends along the inner circumferential surface of the outer case 110, but has an opening 113 so that dust separated from the air by the primary cyclone 101 flows into the first dust collector 103.

Based on the partition 112, the upper part of the outer case 110 forms the outer wall of the primary cyclone described above, and the lower part of the outer case 110 forms the outer wall of the first dust collector 103. The outer wall of the first dust collecting part 103 formed by the lower part of the outer case 110 corresponds to the side wall of the first dust collecting part 103 .

The second member 122 of the inner cases 121 and 122 is disposed under the first member 121 and includes a receiving part 122a and a dust collecting part boundary 122b.

The accommodating portion 122a is configured to accommodate the fine dust outlets 141 of the axial flow cyclones 102a and 102b. The top of the accommodating portion 122a is open, and the plate portion 121e of the first member 121 is disposed to cover the open top of the accommodating portion 122a. The accommodating part 122a is disposed above the pressurizing unit 160 to be described later. The accommodating portion 122a may also be inclined like the side boundary portion 121a or the connecting portion 121f of the first member 121 .

The lower surface of the accommodating part 122a together with the partitioning part 112 forms an upper wall of the first dust collecting part 103 . The compartment part 112 extends along the outer circumferential surface of the accommodating part 122a, and the outer circumferential surface of the compartment part 112 and the accommodating part 122a are in close contact with each other.

The dust collector boundary 122b is formed in a hollow cylindrical shape or a hollow polygonal column shape, and extends from one side of the receiving portion 122a toward the lower cover 130 . The pressurizing unit 160 to be described later includes a rotating shaft 161 disposed under the receiving portion 122a, and the dust collecting unit boundary 122b may be disposed side by side on one side of the rotating shaft 161. The rotating shaft 161 may be disposed at the center of the lower cover 130 , and the dust collector boundary 122b may be disposed eccentrically from the center of the lower cover 130 .

An outer circumferential surface of the dust collecting unit boundary 122b forms an inner wall of the first dust collecting unit 103 . Also, the lower cover 130 forms the bottom of the first dust collection unit 103 . Accordingly, the first dust collecting unit 103 includes the partition part 112 and the accommodating part 122a forming the upper wall, the outer case 110 forming the outer wall, the dust collecting unit boundary 122b forming the inner wall, and the bottom forming the may be defined and formed by the lower cover 130 .

An inner wall 114 may be formed in the first dust collecting part 103 . The inner wall 114 may be integrally formed with the outer case 110 or integrally with the second member 122 of the inner cases 121 and 122 . The inner wall 114 extends in the vertical direction to divide the left and right sides of the first dust collector 103 . One side of the inner wall 114 is connected to the outer case 110, and the other side of the inner wall 114 is connected to the dust collector boundary 122b of the second member 122. An upper end of the inner wall 114 may be connected to the partition 112 , and a lower end of the inner wall 114 may contact the lower cover 130 .

The first dust collector 103 is formed to open toward the lower part of the dust collector 100 . The configuration in which the first dust collecting part 103 and the second dust collecting part 104 are simultaneously opened by the rotation of the lower cover 130 is replaced with the one described above.

2) Pressing unit (160)

If the dust collected in the first dust collection unit 103 is dispersed rather than gathered in one place, there is a possibility that the dust is scattered or discharged to an unintended place in the process of discharging the dust. In addition, if the dust collected in the first dust collector 103 is not gathered in one place, it may be difficult to sufficiently secure a dust collection space. In order to overcome this problem, the present invention pressurizes the dust collected in the first dust collecting unit 103 using the pressurizing unit 160 to reduce the volume.

The pressurizing unit 160 rotates in both directions within the first dust collector 103 to compress the collected dust. The pressing unit 160 includes a rotating shaft 161, a pressing member 162, a fixing part 163, a first driven gear 164, a power transmission rotating shaft 165, and a second driven gear 166.

The rotating shaft 161 is disposed below the accommodating portion 122a of the second member 122 . The rotating shaft 161 is configured to be rotatable by receiving power from the driving motor of the cleaner body 11 . The rotating shaft 161 is made capable of reciprocating in a clockwise or counterclockwise direction, that is, in both directions.

An upper portion of the rotating shaft 161 may be supported by a lower portion of the accommodating portion 122a, and a lower portion of the rotating shaft 161 may be supported by a fixing portion 163.

A groove 161a recessed toward the inside of the center of the rotation shaft 161 is formed on the top of the rotation shaft 161 . Also, a protrusion 122d inserted into the groove 161a protrudes from the lower portion of the accommodating portion 122a. The protrusion 122d is inserted into the groove 161a to support the rotating shaft 161, and thus the protrusion 122d and the rotating shaft 161 are formed to be relatively rotatable. According to this structure, when the rotation shaft 161 is rotated, the protrusion 122d holds the center of rotation of the rotation shaft 161 . Therefore, rotation of the rotating shaft 161 can be performed more stably.

The fixing part 163 is relatively rotatably coupled to the rotating shaft 161 and is fixed to the dust collecting part boundary 122b of the inner cases 121 and 122 . Since the fixing part 163 is connected to the inner cases 121 and 122, even if the lower cover 130 is rotated by the hinge 131 and the first dust collecting part 103 is opened, the pressing member 162 and the rotating shaft 161 ) can be fixed in place.

The pressing member 162 is connected to the rotating shaft 161 and is configured to rotate within the first dust collector 103 according to the rotation of the rotating shaft 161 . The pressing member 162 may be formed in a plate shape. The dust collected in the first dust collecting unit 103 is moved to one side of the first dust collecting unit 103 by the rotation of the pressing member 162 and is collected. When a lot of dust is accumulated, the dust is pressed by the pressing member 162. and compressed.

The first driven gear 164, the power transmission rotational shaft 165, and the second driven gear 166 are formed to receive driving force provided from a driving motor (not shown) of the cleaner body 11 and transmit it to the rotational shaft 161. do. The drive motor is distinct from the suction motor described above.

The first driven gear 164 is disposed outside the lower cover 130 and exposed to the outside of the dust collector 100 . A main gear (not shown) corresponding to the first driven gear 164 is installed in the cleaner body 11, and when the dust collector 100 is coupled to the cleaner body 11, the first driven gear 164 moves as a main gears mesh with each other. The main gear is made to be rotated by a driving motor. Accordingly, the driving force generated by the operation of the driving motor is transmitted to the first driven gear 164 through the main gear.

The power transmission rotation shaft 165 passes through the lower cover 130 and is connected to the first driven gear 164 and the second driven gear 166, respectively. The power transmission rotation shaft 165 is made rotatably relative to the lower cover 130 .

The second driven gear 166 is connected to the power transmission rotational shaft 165 and is configured to transmit driving force to the rotational shaft 161 . A groove formed to accommodate the second driven gear 166 is formed at the lower end of the rotating shaft 161, and a gear structure formed to engage with the second driven gear 166 is provided around the groove. The rotating shaft 161 and the second driven gear 166 are coupled and separated from each other according to the opening and closing of the lower cover 130 so as not to interfere with the opening of the first dust collecting part 103 and the second dust collecting part 104.

A structure that transmits the driving force of the driving unit to the rotating shaft 161 may be changed according to design changes. For example, the rotating shaft 161 may be disposed to pass through the lower cover 130 and be directly matched to the main gear.

Regardless of the structure, the lower end of the pressurizing unit 160 should be able to rotate relative to the lower cover 130 . A sealing member for sealing between them may be provided at a relatively rotated portion of the lower cover 130 .

When the driving motor operates in a state where the dust collector 100 is coupled to the cleaner body 11, driving force is generated, and the main gear is rotated by the driving force generated by the driving motor.

The driving force transmitted to the driving gear of the cleaner body 11 is transmitted to the pressure unit 160 . The first driven gear 164 meshes with the main gear to rotate, and the second driven gear 166 connected to the first driven gear 164 by the power transmission rotation shaft 165 also follows the first driven gear 164. will rotate In addition, the rotation shaft 161 configured to rotate together with the second driven gear 166 also rotates along the second driven gear 166, and the pressing member 162 connected to the rotation shaft 161 also rotates together with the rotation shaft 161 to control 1 The dust collected in the dust collector 103 is pressurized and compressed.

At this time, rotation of the driving motor may be controlled to rotate the pressing member 162 in both directions. For example, the drive motor may rotate in the opposite direction when a repulsive force is applied in the opposite direction to the rotation direction. That is, when the pressing member 162 rotates in one direction to compress the dust collected on one side to a certain level, the driving motor rotates in the other direction to compress the dust collected on the other side. The dust collector 100 and the vacuum cleaner may be designed so that a repulsive force is generated when the pressing member 162 approaches or touches the inner wall 114 to be described later.

When dust is not sufficiently collected in the first dust collection unit 103, the pressing member 162 collides with the inner wall 114 and receives a repulsive force accordingly, or a stopper structure provided on the rotation path of the pressing member 162 ( (not shown) may be configured to receive a repulsive force and rotate in the opposite direction.

Alternatively, the control unit in the cleaner body 11 may apply a control signal to the drive motor to change the rotation direction of the pressing member 162 at regular intervals so that the pressing member 162 rotates in both directions repeatedly. .

An inner wall 114 for collecting dust moved to one side by the rotation of the pressing member 162 may be provided in the first dust collection unit 103 . In this embodiment, it is shown that the inner wall 114 is disposed on the opposite side of the rotating shaft 161 with the dust collecting part boundary 122b of the second member 122 interposed therebetween. According to this, the dust introduced into the first dust collector 103 is collected on both sides of the inner wall 114 by the rotation of the pressing member 162 .

According to the pressure unit 160, it is possible to suppress the scattering of the dust in the process of throwing away the dust, and the possibility of dust being discharged to an unintended place can be remarkably reduced.

(3) Secondary cyclone unit 102

After the dust is separated from the air by the primary cyclone unit 101, the air and fine dust are introduced into the secondary cyclone unit 102 along the flow path. The secondary cyclone unit 102 is formed to separate fine dust from the air introduced from the primary cyclone unit 101 .

The secondary cyclone unit 102 is composed of a set of axial flow type cyclones 102a and 102b formed to separate fine dust from air introduced in the axial direction. A set of axial flow cyclones 102a and 102b includes casings 125 and a fine dust separation member 170 .

1) Casings (125)

Each casing 125 forms outer walls around the hollow part 125a. The outer walls around the hollow part 125a formed by the casings 125 correspond to the outer walls of each of the axial flow type cyclones 102a and 102b. A swirling flow of air and fine dust is formed between the vortex finder 171 and the casing 125, which will be described later.

Fine dust heavier than air rotates in a swirling flow while drawing a radius of rotation larger than that of air. Since the fine dust rotates within the region defined by the casing 125 , the maximum radius of rotation of the fine dust is defined by each of the casings 125 .

The lower portion of the casing 125 may have an inclined shape so as to become narrower toward the bottom. The lower portion of the casing 125 has a shape that becomes narrower toward the bottom to induce the fall of fine dust separated from the air and to prevent the fine dust from being discharged to the vortex finder 171 along the air.

Lower portions of the casings 125 are supported by the plate portion 121e of the first member 121 . Through-holes 121i are formed in the plate portion 121e at positions facing the casings 125, and the lower portions of the respective casings 125 are inserted into the respective through-holes 121i. Since the lower portion of the casing 125 has an inclined shape so as to become narrower downward, the outer circumferential surface of the casing 125 and the through hole 121i have the same size as the casing 125 by the plate portion 121e. can be supported

The upper portion of the casing 125 is formed to accommodate the vortex finder 171 of the fine dust separation member 170 to be described later. An upper portion of the casing 125 may be formed to have a constant inner diameter. Upper and lower portions of the casing 125 may be divided based on a position where the inner diameter becomes narrower.

A fine dust outlet 125b is formed at the lower end of the casing 125 . The fine dust separated from the air is discharged from the axial flow type cyclones 102a and 102b through the fine dust outlet 125b.

The casing 125 includes as many axial flow cyclones 102a and 102b as there are. Since the set of axial flow cyclones 102a and 102b is formed by the casings 125 and the fine dust separation member 170, the number of axial flow cyclones 102a and 102b and the number of casings 125 are same. For the same reason, the number of vortex finders 171 and band parts 172, which will be described later, is equal to the number of axial flow type cyclones 102a and 102b, respectively.

The casings 125 may be disposed inside the inner cases 121 and 122 . Referring to the drawings, it can be seen that the casings 125 are disposed inside the first member 121 . One of the casings 125 may be disposed at the center, and the others may be disposed radially with respect to the center. For distinction, those disposed in the center may be referred to as first casings, and those disposed radially with respect to the first casing may be referred to as second casings.

The outer circumferential surface of each casing 125 is connected so as to be in contact with the surrounding casings 125, so that the casings 125 may form a single member. The cross section of each casing 125 preferably has a circular shape as shown in the drawing. This is because when the casing 125 has a circular cross section, even if the outer circumferential surfaces of the adjacent casings 125 are in close contact with each other, a flow path for air and fine dust can be formed therebetween. When air and fine dust passages are formed between the casings 125, there is an advantage in that a separate passage structure does not need to be installed.

It is not excluded that the cross section of each casing 125 is formed in a polygonal shape. However, even if the cross section of each casing 125 is formed in a polygonal shape, it is preferable that the cross section of each casing 125 is formed in a polygonal shape in which a flow path of air and fine dust can be formed.

2) fine dust separation member (170)

The fine dust separation member 170 is disposed above the casings 125 to form a set of axial flow type cyclones 102a and 102b together with the casings 125 . The casings 125 form a part of the set, and the fine dust separation member 170 forms the other part of the set.

The present invention is characterized in that a set of axial flow type cyclones 102a and 102b is formed by the casings 125 and one fine dust separating member 170 . Hereinafter, the structure of the fine dust separating member 170 will be described with reference to FIGS. 3 to 5 .

5 is a perspective view of the fine dust separation member 170 shown in FIGS. 3 and 4 .

The fine dust separation member 170 includes vortex finders 171, band parts 172, guide vanes 173, and an outer band part 174. Since the fine dust separation member 170 is an integral member, the vortex finders 171, band portions 172, guide vanes, and outer band portions 174 are Each part of the fine dust separation member 170 is meant. However, depending on the design, the fine dust separating member 170 may not have the outer band part 174 . The vortex finder 171, the band unit 172, and the guide vane 173 are all provided in plurality in one fine dust separation member 170, but the outer band unit 174 is provided singularly.

a. vortex finders (171)

The vortex finder 171 is configured to discharge air separated from fine dust. Each of the vortex finders 171 is disposed inside each of the casings 125 , and an outer circumferential surface of each of the vortex finders 171 is spaced apart from an inner circumferential surface of each of the casings 125 . Each of the vortex finders 171 has a structure forming an outer wall around the hollow part 171a, and air is discharged into the hollow part 171a of each of the vortex finders 171.

Upper and lower portions of the vortex finder 171 have higher heights than the band portion 172 or the outer band portion 174 . In the drawing, it can be seen that the upper and lower ends of the vortex finders 171 protrude above and below the fine dust separating member 170, respectively.

Referring to FIG. 4 , the bottom of the vortex finder 171 may have an inclined shape so as to become narrower toward the bottom. The lower part of the vortex finder 171 has a shape that becomes narrower as it goes downward to prevent fine dust from being discharged into the vortex finder 171 along the air.

Referring also to FIG. 4 , an upper portion of the vortex finder 171 is formed to have a constant inner diameter. Upper and lower parts of the vortex finder 171 may be distinguished based on a position where the inner diameter becomes narrower.

One of the vortex finders 171 may be disposed at the center, and the others may be disposed radially with respect to the center. For distinction, those disposed in the center may be referred to as first vortex finders, and those disposed radially with respect to the first vortex finder may be referred to as second vortex finders.

The vortex finders 171 are provided as many as the axial flow type cyclones 102a and 102b. As described above, since the set of axial flow cyclones 102a and 102b is formed by the casings 125 and the fine dust separation member 170, the number of axial flow cyclones 102a and 102b and the vortex finders The number of (171) is the same.

b. band portions (172)

The band portion 172 is formed to surround an outer circumferential surface of the vortex finder 171 at a position spaced apart from the vortex finder 171 . As the band part 172 and the vortex finder 171 are spaced apart from each other, inlets of the axial flow cyclones 102a and 102b are formed between them. Air and fine dust are introduced into inlets of the axial flow cyclones 102a and 102b along the axial direction.

The band unit 172 may be named with a different name as needed. For example, names such as a ring portion, a ring portion, an edge portion, a circumference portion, a circle portion, a support portion, a connection portion, an outer portion, a cyclone boundary portion, and an outer wall portion may be considered, and other names are also possible.

The band parts 172 are seated on the casings 125 and have a shape corresponding to the upper portion of the casings 125 to form outer walls of each of the axial flow cyclones 102a and 102b together with the casings 125. . Referring to FIG. 3 , it can be seen that the upper portion of the casing 125 is formed in a circular shape, and the band portion 172 is also formed in a circular shape surrounding the vortex finder 171 . However, it is not excluded that the upper portion of the casing 125 and the band portion 172 are formed in a polygonal shape.

The fine dust separation member 170 and the casings 125 are configured to set a coupling position and prevent arbitrary relative rotation by a position fixing groove (not shown) and a position fixing protrusion (not shown). Since each of the vortex finders 171 is spaced apart from each of the casings 125, arbitrary relative rotation may occur between the fine dust separating member 170 and the casings 125, and normal operation of the dust collector 100 may be prevented. For this purpose, arbitrary relative rotation must be prevented.

The position fixing protrusion is made to be inserted into the position fixing groove, and may be formed on any one of the band parts 172 and the casings 125 . The position fixing groove is made to accommodate the position fixing protrusion and may be formed on the other one of the band parts 172 and the casings 125 . In addition, a plurality of position fixing grooves and position fixing protrusions may be provided.

When the fine dust separation member 170 is seated on top of the casings 125, each of the casings 125 and each of the band parts 172 are molded to each other to form outer walls of each of the axial flow cyclones 102a and 102b. do. For distinction, outer walls formed by the casings 125 may be referred to as lower outer walls, and outer walls formed by the band parts 172 may be referred to as upper outer walls.

One of the band parts 172 may be disposed at the center, and the others may be disposed radially with respect to the center. For distinction, those disposed in the center may be referred to as first band portions, and those disposed radially with respect to the first band portion may be referred to as second band portions.

The first band portion and the second band portion may be connected to each other. The second band parts may be connected to each other adjacent to each other. The cross section of the band portion 172 preferably has a circular shape as shown in the drawing. This is because when the cross section of the band portion 172 is formed in a circular shape, even if adjacent band portions 172 are in close contact with each other, a flow path 191 for air and fine dust may be formed therebetween. When the flow path 191 for air and fine dust is formed between the band parts 172, there is an advantage in that a separate flow path structure does not need to be installed.

It is not excluded that the cross section of the band portion 172 is formed in a polygonal shape. However, even if the cross section of the band portion 172 is formed in a polygonal shape, it is preferable that the cross section of the band portion 172 is formed in a polygonal shape in which a flow path of air and fine dust can be formed.

The band parts 172 are provided as many as the number of axial flow type cyclones 102a and 102b. As described above, since the set of axial flow cyclones 102a and 102b is formed by the casings 125 and the fine dust separation member 170, the number of axial flow cyclones 102a and 102b and the band parts ( 172) is the same.

c. guide vanes (173)

The guide vanes 173 are disposed between each of the vortex finders 171 and each of the band parts 172 and are connected to each of the vortex finders 171 and each of the band parts 172 . One side of each guide vane 173 is connected to the outer circumferential surface of each vortex finder 171 , and the other side is connected to the inner circumferential surface of each band portion 172 .

A plurality of guide vanes 173 may be provided for each of the axial flow cyclones 102a and 102b, and the guide vanes 173 extend along a spiral direction to generate a swirling flow. One side of the guide vane 173 may be connected to an outer circumferential surface of the vortex finder 171 along a spiral direction, and the other side may be connected to an inner circumferential surface of the band unit 172 along a spiral direction. As the guide vane 173 extends in a spiral direction, the air and fine dust introduced into the inlet of each of the axial flow cyclones 102a and 102b form a swirling flow. Unlike the tangential inflow type cyclones, the axial flow type cyclones 102a and 102b generate a swirling flow by the guide vane 173, and thus do not require a flow path structure for tangential inflow.

Each guide vane 173 may extend from a lower end of the band part 172 to an upper end of the band part 172 along a spiral direction. Extending from the lower end to the upper end means that the guide vanes 173 have the same height as the band part 172 . As the guide vanes 173 have the same height as the band portion 172, the possibility of interference with other parts and the possibility of damage can be reduced.

d. outer band portion 174

The outer band portion 174 is formed to surround the band portions 172 to form an edge of the fine dust separating member 170 . The outer band portion 174 surrounds the band portions 172 outside the band portions 172 . The band parts 172 have been previously divided into a first band part and a second band part, and according to this division, the outer band part 174 is formed to surround the second band parts. The outer band portion 174 may be connected to the second band portions.

The outer band portion 174 may also have the same height as the band portions 172 and the guide vanes 173 . As the outer band part 174 has the same height as the band parts 172 and the guide vanes 173, the possibility of interference with other parts and the possibility of damage can be reduced.

The outer band portion 174 is made to be seated inside the inner cases 121 and 122 . The first member 121 of the inner cases 121 and 122 is formed to surround the casings 125 and the outer band portion 174 and includes a stepped portion 121g formed along the inner circumferential surface to support the outer band portion 174. to provide The stepped portion 121g has a shape corresponding to the outer band portion 174. For example, as shown in the drawing, the stepped portion 121g may also be formed in a circular shape to correspond to the circular outer band portion 174. The outer band portion 174 may be seated on the stepped portion 121g inside the first member 121 .

The fine dust separation member 170 and the inner cases 121 and 122 are configured to set the coupling position by the position fixing groove 175 and the position fixing protrusion 121h and to prevent arbitrary relative rotation. Since the vortex finders 171 and the casings 125 are spaced apart from each other, random relative rotation may occur, and random relative rotation must be prevented for normal operation of the dust collector 100 .

The position fixing protrusion 121h is made to be inserted into the position fixing groove 175 and may be formed on either the outer band part 174 or the inner case 121 or 122 . The position fixing groove 175 is made to accommodate the position fixing protrusion 121h and may be formed on the other one of the outer band part 174 and the inner casing 125 . If the position fixing groove 175 or the position fixing protrusion 121h is formed in the inner case 121 or 122, the position fixing groove 175 or the position fixing protrusion 121h is formed on the inner surface of the inner case 121 or 122. However, it may be formed on the stepped portion 121g. 3 shows a configuration in which the position fixing protrusion 121h is formed on the inner surfaces of the inner cases 121 and 122 . In addition, a plurality of position fixing grooves 175 and position fixing protrusions 121h may be provided.

It is also possible that the outer band portion 174 is seated on top of the casings 125 . For example, a configuration in which protrusions protruding toward the inner circumferential surface of the first member 121 are formed at the upper ends of the second casings 125 and the outer band portion 174 is seated on the protrusions may be considered.

A flow path 192 for air and fine dust is formed between the outer band portion 174 and the second band portions 172 . Since the radius of the outer band portion 174 is greater than the radius of the second band portions 172, a flow path 192 for air and fine dust is formed between the outer band portion 174 and the second band portions 172. When the flow path 192 for air and fine dust is formed between the outer band portion 174 and the second band portions 172, there is an advantage in that a separate flow path structure does not need to be installed.

The outer band portion 174 forms an outer wall of the secondary cyclone portion 102 together with the casings 125 . An outer wall of the secondary cyclone unit 102 may be divided into a lower part and an upper part based on the boundary between the outer band part 174 and the casings 125 . The casings 125 form a lower outer wall of the secondary cyclone unit 102 , and the outer band unit 174 forms an upper outer wall of the secondary cyclone unit 102 .

The outer walls of the axial cyclones 102a and 102b are formed by the casings 125 and the band parts 172, and the outer wall of the secondary cyclone part 102 is formed by the casings 125 and the outer band part 174. is formed by The outer walls of the axial flow type cyclones 102a and 102b and the outer wall of the secondary cyclone unit 102 are separated from each other. Furthermore, it has been described above that the boundary between the primary cyclone unit 101 and the secondary cyclone unit 102 is formed by the inner cases 121 and 122 .

Since the vortex finder 171 and the band portion 172 are connected to each other by guide vanes 173, each of the band portions 172 are connected to each other, and the outer band portion 174 is connected to the second band portions. , The fine dust separation member 170 may be made of one integral member.

3) Axial flow cyclones

When the fine dust separation member 170 is seated on the casings 125, a set of axial flow cyclones 102a and 102b is formed, and the secondary cyclone unit 102 is a set of axial flow cyclones 102a and 102b. made up of Like the vortex finders 171 or the band parts 172, the axial flow cyclones 102a and 102b are radially arranged around the first axial flow cyclone 102a and the first axial flow cyclone 102a. It can be divided into second axial flow type cyclones (102b). It may be understood that the second axial flow cyclones 102b are disposed along the circumference around the first axial flow cyclone 102a.

The first axial flow cyclones 102a and the second axial flow cyclones 102b are disposed adjacent to each other, and the band portions of the first axial flow cyclones 102a and the band portions of the second axial flow cyclones 102b are connected to each other. do. Also, the band parts of the second axial flow type cyclones 102b are sequentially connected to each other. A flow path 191 for air and fine dust is formed between the band parts of the first axial flow type cyclones 102a and the band parts of the second axial flow type cyclones 102b, and the band parts of the second axial flow type cyclones 102b A flow path 192 for air and fine dust is also formed between the 172 and the outer band portion 174.

The axial flow type cyclones 102a and 102b are arranged to face in parallel directions and may be arranged parallel to each other. According to the arrangement, the axial flow type cyclones 102a and 102b can be efficiently disposed inside the primary cyclone unit 101 . In particular, since the axial cyclones 102a and 102b do not require a separate guide passage for tangential inflow, more axial cyclones 102a and 102b are disposed inside the primary cyclone unit 101 It can be. Therefore, even if the axial flow type cyclones 102a and 102b are accommodated inside the primary cyclone unit 101, according to the present invention, the number of axial flow type cyclones 102a and 102b does not decrease compared to the prior art, so that the cleaning performance is not reduced. can be prevented

In addition, unlike the tangential flow type cyclones in which high-speed rotational flow was generated due to being biased to one side by the guide passage, the axial flow type cyclones 102a and 102b generate relatively uniform rotational flow over the entire area of the inlet. Since local high-speed flow does not occur in the axial flow type cyclones 102a and 102b, flow loss due to this may be reduced.

Unlike the configuration in which the secondary cyclone unit 102 is disposed above the primary cyclone unit 101, the secondary cyclone unit 102 of the present invention is accommodated inside the primary cyclone, so that the dust collector 100 The overall height may be relatively low.

(4) Second dust collection unit (104)

The second dust collecting unit 104 is formed to collect dust separated from the air by the secondary cyclone unit 102 . The first dust collecting unit 103 refers to a space defined by the dust collecting unit boundary 122b and the lower cover 130 .

The inner cases 121 and 122 may be composed of a first member 121 and a second member 122, and the dust collector boundary 122b of the second member 122 is formed as a hollow cylinder to form a lower cover 130. adheres to However, the dust collector boundary 122b may be formed as a hollow polygonal column other than a cylinder. The second member 122 includes an accommodating portion 122a, and the accommodating portion 122a may form an inclination when the dust collector 100 is coupled to the cleaner body 11. The fine dust discharged from the fine dust outlet 125b may be slid by an incline and collected into the second dust collector 104 .

The dust collecting unit boundary 122b forms a boundary between the first dust collecting unit 103 and the second dust collecting unit 104 . Accordingly, mixing of the dust collected in the first dust collection unit 103 and the fine dust collected in the second dust collection unit 104 can be prevented. The second dust collecting part 104 is formed inside the first dust collecting part 103, and the first dust collecting part 103 corresponds to the area other than the area corresponding to the second dust collecting part 104.

The dust collecting unit boundary 122b forms a side wall of the second dust collecting unit 104, and the lower cover 130 forms a bottom of the second dust collecting unit 104. A hole 122c is formed at the boundary between the accommodating part 122a of the second member 122 and the dust collecting part, and the hole 122c corresponds to the fine dust inlet of the second dust collecting part 104.

The inner diameter of the dust collector boundary 122b may be formed to become narrower as it goes downward. According to this structure, since fine dust can be induced to fall, efficient dust collection is possible.

The structures of the other dust collector boundary 122b and the lower cover 130 are replaced with those described above. Like the first dust collecting part 103, the second dust collecting part 104 is formed to open toward the lower part of the dust collecting device 100, and the first dust collecting part 103 and the second dust collecting part 104 are rotated by the lower cover 130. ) is also replaced with the configuration described above.

(5) Flow path of the dust collector 100

The passage of the dust collector 100 can be described according to the flow of air.

An inlet 111 of the dust collector 100 is formed in the outer case 110, and air is introduced into the dust collector 100 through the inlet 111 from the internal passage 14 of the inlet cleaner.

The passage of the primary cyclone unit 101 is formed between the inner circumferential surface of the outer case 110 and the outer circumferential surface of the inner cases 121 and 122 . When dust is separated from the air by the primary cyclone unit 101, the air and fine dust are introduced into a passage between the primary cyclone unit 101 and the secondary cyclone unit 102. The first dust collection unit 103 communicates with the primary cyclone unit 101 .

The passage between the primary cyclone unit 101 and the secondary cyclone unit 102 is formed between the outer circumferential surfaces of the casings 125 and the inner circumferential surfaces of the inner cases 121 and 122 . Air and fine dust pass through the mesh filter 127 and then flow into the secondary cyclone unit 102 through a passage between the primary cyclone unit 101 and the secondary cyclone unit 102 .

The inlet 111 of the secondary cyclone unit 102 is formed between the vortex finder 171 and the band unit 172 of each of the axial flow cyclones 102a and 102b. The axial flow type cyclones 102a and 102b each include a vortex finder 171 for discharging air and a fine dust outlet 125b for discharging fine dust 172 . The second dust collector 104 communicates with the fine dust outlet 125b.

A cover member 150 is disposed above the secondary cyclone unit 102 . The outer cover 151 of the cover member 150 has a shape corresponding to the upper boundary portion 121b of the inner cases 121 and 122 and is disposed to cover the upper boundary portion 121b. As the protrusion 121c of the upper boundary portion 121b is inserted into the groove 152 of the outer cover 151, the cover member 150 may be seated on the upper boundary portion 121b. The protrusion 121c and the groove 152 serve to set the positions of the first member 121 and the cover member 150, and the cover member 150 at the position set by the projection 121c and the groove 152. The through holes 155 of ) are arranged to face the vortex finders 171 . Positions of the protrusion 121c and the groove 152 may be interchanged.

The communication holes 155 are formed in the inner cover 154 of the cover member 150 , and the inclined portion 153 is inclined to connect the outer cover 151 and the inner cover 154 . The inner cover 154 can be spaced apart from the band parts 172 by the inclined part 153, and accordingly, the inlets 111 of the axial flow type cyclones 102a and 102b can be sufficiently secured.

A flow path 193 between the secondary cyclone unit 102 and the outlet 141 is formed between the cover member 150 and the upper cover, and the air discharged from the secondary cyclone unit 102 passes through this flow path 193. It is discharged to the outlet 141 along the way.

3. Operation of dust collector 100 and vacuum cleaner 10

Due to the suction force generated by the suction motor of the vacuum cleaner 10, air and foreign substances are introduced into the inlet 111 of the dust collector 100 through the suction part 13 (see FIG. 1). Air introduced into the inlet 111 of the dust collector 100 flows along the flow path, is sequentially filtered in the primary cyclone unit 101 and the secondary cyclone unit 102, and exits through the outlet 141. Dust and fine dust separated from the air are collected in the dust collector 100.

Looking in detail from the process of separating dust from the air by the primary cyclone unit 101, air and foreign substances pass through the inlet 111 of the dust collector 100 to the outer case 110 and the inner cases 121 and 122. It flows into the annular space between them, and makes a turning motion in the annular space.

In this process, the relatively heavy dust gradually flows downward while rotating in a spiral in the space between the outer case 110 and the inner cases 121 and 122 by centrifugal force, and is collected in the first dust collector 103. The pressurization unit 160 continuously operates and compresses the dust collected in the first dust collector 103 .

Meanwhile, since air and fine dust are lighter than dust, they are introduced into the inner cases 121 and 122 through the mesh filter 127 by a suction force. Air and fine dust pass through the channels 191 and 192 formed in the fine dust separation member 170 and are introduced into the axial flow type cyclones 102a and 102b of the secondary cyclone unit 102 .

Along the guide vanes 173, the dust and fine dust are rotated inside the axial flow cyclones 102a and 102b. Fine dust heavier than air gradually flows downward while rotating between each vortex finder 171 and the band part 172, is discharged to the fine dust outlet 125b, and is collected in the second dust collector 104. Air lighter than fine dust is discharged to the flow path 193 between the cover member 150 and the upper cover 140 through the inside of the vortex finder 171, and exits the dust collector 100 through the outlet 141 .

II. Example 2

The second embodiment is different from the first embodiment only in that an auxiliary member 280 is additionally provided, and the rest of the configuration is the same. Therefore, in the following, only configurations different from those of the first embodiment will be described centering on the auxiliary member 280, and descriptions of other configurations will be replaced with descriptions of the first embodiment.

6 is an exploded perspective view of the dust collector 200 according to the second embodiment of the present invention. FIG. 7 is a perspective view of the fine dust separating member 270 and the auxiliary member 280 shown in FIG. 6 .

The secondary cyclone unit 202 includes an auxiliary member 280, and a set of axial flow type cyclones are casings 225, a fine dust separation member 270, and an auxiliary member seated on the fine dust separation member 270. (280).

The thickness of the fine dust separation member 270 and the auxiliary member 280 affects the separation performance and efficiency of the dust collector 200 . The auxiliary member 280 serves to assist the fine dust separation member 270, and when the auxiliary member 280 is formed excessively thick, a decrease in efficiency occurs due to pressure loss. Therefore, the auxiliary member 280 is preferably formed thinner than the fine dust separation member 270 . In contrast, the fine dust separation member 270 has a main function of separating fine dust from the air, and is preferably thicker than the auxiliary member 280 for high separation performance.

1. Auxiliary member (280)

The auxiliary member 280 includes cover portions 281 , auxiliary band parts 282 , auxiliary guide vanes 283 and auxiliary outer band parts 284 . Since the auxiliary member 280 is an integral member, the cover parts 281, the auxiliary band parts 282, the auxiliary guide vanes 283, and the auxiliary outer band part 284 form each part of the auxiliary member 280. it means. However, depending on the design, the auxiliary member 280 may not include the auxiliary outer band part 284 .

(1) Cover portions 281 (cover portions)

Cover parts 281 may be provided as many as the number of vortex finders 271 , and each cover part 281 is formed to surround the vortex finder 271 of the fine dust separation member 270 . The cover part 281 may have a shape corresponding to the vortex finder 271, and may be formed, for example, in a hollow cylindrical shape.

The fine dust separation member 270 may include support parts 276 protruding along the outer circumferential surfaces of the vortex finders 271, and the support parts 276 have steps along the outer circumferential surfaces of the vortex finders 271. form The cover part 281 has a shape corresponding to the support part 276 so as to be seated on the support part 276 . For example, if the support part 276 is formed in a circular shape along the outer circumferential surface of the vortex finder 271, the cover part 281 may also be formed in a circular shape.

The cover part 281 may theoretically have the same diameter as the support part 276 . Also, the outer diameter of the vortex finder 271 and the inner diameter of the cover part 281 may be the same. Accordingly, the cover part 281 may be coupled to the vortex finder 271 while covering the outer circumferential surface of the vortex finder 271 and may also be seated on the support part 276 .

The position of the auxiliary member 280 is fixed by the structure in which each of the cover parts 281 surrounds each of the vortex finders 271 . Therefore, the auxiliary member 280 and the fine dust separation member 270 do not require a separate configuration for position fixing, and do not relatively rotate even if they do not have a configuration for position fixing. In this respect, there is a difference between the auxiliary member 280 and the fine dust separation member 270.

Like the vortex finder 271 of the fine dust separation member 270, the upper part of the cover part 281 may have a higher height than the auxiliary band part 282 or the auxiliary outer band part 284. However, unlike the vortex finder 271, the lower part of the cover part 281 may have the same height as the auxiliary band part 282 or the auxiliary outer band part 284. 7, it can be seen that the upper ends of the cover parts 281 protrude above the auxiliary member 280, but the lower ends do not. Accordingly, the cover parts 281 may have a constant inner diameter.

One of the cover parts 281 may be disposed at the center, and the others may be disposed radially with respect to the center. For distinction, those disposed in the center may be referred to as first cover parts, and those disposed radially with respect to the first cover part may be referred to as second cover parts.

(2) auxiliary band portions 282

The auxiliary band parts 282 are formed to surround the outer circumferential surface of each cover part 281 at a position spaced apart from each cover part 281 . As the auxiliary band parts 282 and the cover parts 281 are spaced apart from each other, inlets of axial flow type cyclones (not shown) are formed therebetween. Air and fine dust are introduced into the inlets of the axial flow cyclones along the axial direction.

The auxiliary band parts 282 may be named by other names as needed. For example, names such as an auxiliary ring portion, an auxiliary ring portion, an auxiliary rim portion, an auxiliary circumference portion, an auxiliary circle portion, an auxiliary support portion, an auxiliary connection portion, an auxiliary outer portion, an auxiliary cyclone boundary portion, and an auxiliary outer wall portion may be considered. and other names are also possible.

The auxiliary band parts 282 are seated on the band parts 272, and are attached to the band parts 272 to form outer walls of the respective axial flow cyclones 120a and 102b together with the casings 225 and the band parts 272. have a corresponding shape. Referring to FIG. 7 , it can be seen that the band parts 272 are formed in a circular shape, and the auxiliary band parts 282 are also formed in a circular shape. However, it is not excluded that the band parts 272 and the auxiliary band parts 282 are formed in a polygonal shape.

When the auxiliary member 280 is seated on the fine dust separation member 270 and the fine dust separation member 270 is seated on top of the casings 225, each of the casings 225 and each band portion 272 They are matched together to form the outer walls of each axial flow type cyclone. For distinction, outer walls formed by the casings 225 are referred to as lower outer walls, outer walls formed by the band parts 272 are referred to as intermediate outer walls, and outer walls formed by the auxiliary band parts 282. These may be termed upper outer walls.

One of the auxiliary band parts 282 may be disposed at the center, and the others may be radially disposed with respect to the center. For distinction, those disposed in the center may be referred to as first auxiliary band parts, and those disposed radially with respect to the first auxiliary band part may be referred to as second auxiliary band parts.

The first auxiliary band part and the second auxiliary band part may be connected to each other. The second auxiliary band parts may be connected to each other adjacent to each other. The cross section of each of the auxiliary band parts 282 preferably has a circular shape as shown in the drawing. This is because when the cross section of each auxiliary band part 282 is formed in a circular shape, even if adjacent auxiliary band parts 282 are in close contact with each other, a flow path 291a for air and fine dust may be formed therebetween. If the flow path 291a of air and fine dust is formed between the auxiliary band parts 282, there is an advantage that a separate flow path structure does not have to be installed.

It is not excluded that the cross section of the auxiliary band parts 282 is formed in a polygonal shape. However, even if the cross section of the auxiliary band parts 282 is formed in a polygonal shape, it is preferable that the air and fine dust passage 291a is formed in a polygonal shape.

The auxiliary band parts 282 are provided as many as the number of axial flow type cyclones. As described above, since the set of axial flow cyclones is formed by the casings 225, the fine dust separating member 270, and the auxiliary member 280, the number of axial flow cyclones and the number of auxiliary band parts 282 are same.

(3) auxiliary guide vanes (283)

The auxiliary guide vanes 283 are disposed between the cover part 281 and the auxiliary band part 282 and are connected to the cover part 281 and the auxiliary band part 282 . One side of the auxiliary guide vanes 283 is connected to the outer circumferential surface of each of the cover parts 281 , and the other side is connected to the inner circumferential surface of each of the auxiliary band parts 282 .

A plurality of auxiliary guide vanes 283 may be provided for each axial flow type cyclone, and each auxiliary guide vane 283 extends in a spiral direction to generate a swirling flow. One side of the auxiliary guide vanes 283 may be connected to the outer circumferential surface of the cover part 281 along the spiral direction, and the other side may be connected to the inner circumferential surface of the auxiliary band part 282 along the spiral direction.

The auxiliary guide vanes 283 may extend from lower ends of the auxiliary band parts 282 to upper ends of the auxiliary band parts 282 in a spiral direction. Extending from the bottom to the top means that the auxiliary guide vanes 283 have the same height as the auxiliary band parts 282 . As the auxiliary guide vanes 283 have the same height as the auxiliary band parts 282, the possibility of interference with other parts and the possibility of damage can be reduced.

(4) auxiliary outer band portion 284

The auxiliary outer band portion 284 is formed to surround the auxiliary band portions 282 and forms an edge of the auxiliary member 280 . The auxiliary outer band part 284 surrounds the auxiliary band parts 282 on the outside of the auxiliary band parts 282 . Previously, the auxiliary band parts 282 were divided into first auxiliary band parts and second auxiliary band parts, and according to this division, the auxiliary outer band part 284 is formed to surround the second auxiliary band parts. The auxiliary outer band part 284 may be connected to the second auxiliary band parts.

The auxiliary outer band portion 284 may also have the same height as the auxiliary band portions 282 and the auxiliary guide vanes 283 . As the auxiliary outer band portion 284 has the same height as the auxiliary band portions 282 and the auxiliary guide vanes 283, the possibility of interference with other parts and the possibility of damage may be reduced.

The auxiliary outer band portion 284 is configured to be seated on the outer band portion 274 of the fine dust separation member 270 . The auxiliary outer band portion 284 may have substantially the same shape as the outer band portion 274 . For example, as shown in the drawing, the auxiliary outer band portion 284 may have a circular shape to correspond to the circular outer band portion 274 .

A flow path 292b for air and fine dust is formed between the auxiliary outer band part 284 and the second auxiliary band parts. Since the radius of the auxiliary outer band part 284 is larger than the radius of the second auxiliary band parts 282, the flow path of air and fine dust 292b is formed between the auxiliary outer band part 284 and the second auxiliary band parts 282. will be formed When air and fine dust passages are formed between the auxiliary outer band part 284 and the second auxiliary band parts 282, there is an advantage in that a separate passage structure does not need to be installed.

The auxiliary outer band part 284 forms an outer wall of the secondary cyclone part 202 together with the outer band part 274 and the casings 225 . Based on the outer band portion 274, the outer wall of the secondary cyclone portion 202 may be divided into a lower portion, a middle portion, and an upper portion. The casings 225 form the lower outer wall of the secondary cyclone part 202, the outer band part 274 forms the middle outer wall of the secondary cyclone part 202, and the auxiliary outer band part 284 forms the secondary cyclone part 284. It forms the upper outer wall of section 202.

The outer walls of the axial flow type cyclones are formed by the casings 225, the band parts 272 and the auxiliary band parts 282, and the outer wall of the secondary cyclone part 202 is the casings 225 and the outer band part 274 and an auxiliary outer band portion 284. The outer walls of the axial flow type cyclones and the outer wall of the secondary cyclone unit 202 are separated from each other. Furthermore, it has been described above that the boundary between the primary cyclone unit and the secondary cyclone unit is formed by the inner cases 221 and 222 .

The cover parts 281 and the auxiliary band parts 282 are connected to each other by auxiliary guide vanes 283, each of the auxiliary band parts 282 are connected to each other, and the auxiliary outer band part 284 is the second auxiliary band part 284. Since it is connected to the band parts 282, the auxiliary member 280 may be made of one integral member.

2. Axial flow cyclones

When the auxiliary member 280 is seated on the fine dust separation member 270 and the fine dust separation member 270 is seated on the casings 225, a set of axial flow cyclones is formed and the secondary cyclone unit is a set of axial flow type cyclones. made up of Similar to the cover parts 281 or the auxiliary band parts 282, the axial flow cyclones may also be divided into a first axial flow cyclone at the center and a second axial flow cyclone radially disposed around the first axial flow cyclone. there is. It can be understood that the second axial flow cyclones are disposed along the circumference of the first axial flow cyclone.

FIG. 8 is a conceptual view partially showing a coupled state of the fine dust separation member 270 and the auxiliary member 280 shown in FIG. 6 . FIG. 9 is a plan view of the fine dust separating member 270 and the auxiliary member 280 shown in FIG. 6 .

As the auxiliary member 280 is seated on the fine dust separation member 270, the auxiliary guide vane 283 is in contact with the guide vane 273 and continuously extends along the spiral direction. In particular, each auxiliary guide vane 283 may be formed to be in surface contact with each guide vane 273 (273', 283').

If any one guide vane 273 and any one auxiliary guide vane 283 are described as a standard, the guide vane 273 and the auxiliary guide vane 283 are provided on different members, but are in surface contact with each other (273'). , 283'), it extends continuously along the spiral direction like a single vane.

More specifically, referring to FIG. 8 , the fine dust separation member 270 includes a first guide vane 273a and a second guide vane 273b, and the first guide vane 273a and the second guide vane 273b. ) are placed adjacent to each other. Similarly, the auxiliary member 280 includes a first auxiliary guide vane 283a and a second auxiliary guide vane 283b, and the first auxiliary guide vane 283a and the second auxiliary guide vane 283b are disposed adjacent to each other. do.

When the auxiliary member 280 is seated on the fine dust separating member 270, the first guide vane 273a and the first auxiliary guide vane 283a are in surface contact with each other and extend continuously along the spiral direction, and the first guide vane 273a continuously extends along the spiral direction. The vane 273a and the first auxiliary guide vane 283a extend along the spiral direction like a single vane.

The second guide vane 273b and the second auxiliary guide vane 283b are also in surface contact with each other and continuously extend along the spiral direction. Like a vane, it extends along the spiral direction.

According to this configuration, the vanes may overlap each other along the coupling direction of the fine dust separating member 270 and the auxiliary member 280 . Specifically, the first auxiliary guide vane 283a and the second guide vane 273b overlap each other. It can be seen from FIGS. 8 and 9 that the first auxiliary guide vane 283a and the second guide vane 273b overlap each other.

Since the fine dust separation member 270 manufactured by injection in the upper and lower molds must be separated from the upper and lower molds after injection, the guide vanes 273 overlap each other along the axial direction of the vortex finder 273. can't This also applies to the auxiliary member 280.

However, when the fine dust separating member 270 and the auxiliary member 280 are coupled to each other, the first auxiliary guide vane 283a and the second guide vane 273b may overlap each other. This is like forming a structure in which one vane overlaps with another vane along the axial direction of the vortex finder 273 or along the coupling direction of the fine dust separation member 270 and the auxiliary member 280.

When the first auxiliary guide vanes 283a and the second guide vanes 273b overlap each other along the coupling direction of the fine dust separation member 270 and the auxiliary member 280, a high-speed swirling flow can be formed, Through this, high separation performance of the dust collector 200 can be implemented.

The efficiency and separation performance of the dust collector 200 are in inverse proportion. When the structure of the first embodiment in which the set of axial cyclones is composed of the casings 225 and the fine dust separation member 270 is used, the low-speed swirling flow Through this, it is possible to implement a highly efficient dust collector 200. On the contrary, when the structure of the second embodiment in which the set of axial cyclones is composed of the casings 225, the fine dust separation member 270, and the auxiliary member 280 is used, high separation is achieved through high-speed swirling flow even though the efficiency is somewhat reduced. A performance dust collector 200 can be implemented.

In this specification, since the same or similar reference numerals are given to the same or similar components even in different embodiments, the reference numerals of components not described in FIGS. 6 to 9 refer to the descriptions of FIGS. 1 to 5.

Reference numeral 203 denotes a first dust collection unit and 204 a second dust collection unit.

Reference numeral 210 denotes an outer case, 211 an inlet, 212 a partition, 213 an opening, 214 an inner wall, and 216 a groove.

Reference numeral 221 denotes a first member, 211a a side boundary portion, 211b an upper boundary portion, 221c a protrusion, 221d a skirt portion, 221e a plate portion, 221f a connection portion, 221g a stepped portion, and 221h a position fixing protrusion.

Reference numeral 222 denotes a second member, 222a denotes an accommodating portion, 222b denotes a dust collecting portion boundary, and 222c denotes a hole.

Reference numeral 223 denotes an opening, 225a a hollow portion, 225b a fine dust outlet, and 227 a mesh filter.

Reference numeral 230 denotes a lower cover, 231 a hinge, 232 a hook coupling portion, and 233 a sealing member.

Reference numeral 240 denotes an upper cover, 241 an outlet, and 242 a handle.

Reference numeral 250 denotes a cover member, 251 an outer cover, 252 a groove, 253 an inclined portion, 254 an inner cover, and 255 a communication hole.

Reference numeral 260 denotes a pressure unit, 261 a rotation shaft, 262 a pressure member, 263 a fixing part, 264 a first driven gear, 265 a power transmission rotation shaft, and 266 a second driven gear.

Reference numerals 291 and 292 indicate passages of air and fine dust.

The above-described dust collector and a vacuum cleaner having the same are not limited to the configuration and method of the above-described embodiments, but the above embodiments are configured by selectively combining all or part of each embodiment so that various modifications can be made. It could be.

Claims (16)

It includes a cyclone unit composed of a set of axial flow cyclones that separate fine dust from air introduced in the axial direction,
The set is
casings each forming an outer wall around the hollow; and
A fine dust separation member disposed above the casings to form the axial flow type cyclones together with the casings;
The fine dust separation member,
Vortex finders disposed inside each casing;
It is formed to surround at least a part of the outer circumferential surface of each vortex finder at a position spaced apart from each vortex finder, and is seated on the casings to form outer walls of each axial flow type cyclone together with the casings Shape corresponding to the casings Band parts having; and
Includes guide vanes disposed between the vortex finders and the band parts, connected to the vortex finders and the band parts, and extending along a spiral direction;
One side of the guide vanes is connected to the outer circumferential surface of the vortex finders along a spiral direction, and the other side of the guide vanes is connected to the inner circumferential surface of the band parts along a spiral direction. According to claim 1,
The guide vanes are dust collector, characterized in that extending from the lower end of the band parts to the upper end of the band parts along the spiral direction to form the same height as the band parts.
According to claim 1,
The guide vanes are characterized in that the length of one side connected to the outer circumferential surface of the vortex finders is formed shorter than the length of the other side connected to the inner circumferential surface of the band parts.
According to claim 1,
The guide vanes are dust collector, characterized in that extending from the lower portion of the band portion to the upper portion of the band portion along a spiral direction.
According to claim 1,
The dust collector, characterized in that the vortex finders, the band parts and the guide vanes adjacent to each other have an integral structure.
According to claim 1,
The set is
A first axial flow type cyclone disposed in the center; and
A dust collector comprising a second axial flow cyclone disposed radially around the first axial flow cyclone.
According to claim 6,
The first axial flow cyclones and the second axial flow cyclones are formed by the casings and the fine dust separation member,
The band portion of the first axial flow cyclone and the band portions of the second axial flow cyclones are connected to each other,
A dust collector, characterized in that a flow path for air and fine dust is formed between the band parts of the first axial flow type cyclone and the band parts of the second axial flow type cyclones.
According to claim 7,
The second axial flow type cyclone is formed of six, and the air and fine dust flow path is formed of six, characterized in that the dust collector.
According to claim 7,
The band portion of the first axial flow cyclone and the band portions of the second axial flow cyclones are integrally formed with each other, so that the first axial flow type cyclone and the second axial flow type cyclone form an integral structure.
According to claim 1,
The vortex finder is a dust collector, characterized in that disposed on the upper portion of the casing to be accommodated by the casing.
According to claim 1,
The dust collector, characterized in that the lower portion of the casing has a narrower inner diameter than the upper portion of the casing.
According to claim 1,
A dust collector, characterized in that the height between the upper and lower portions of the vortex finder is formed to be higher than the height of the band portion, and the band portion is disposed between the upper and lower portions of the vortex finder.
According to claim 1 or 6,
The dust collector, characterized in that the inlet of each axial flow type cyclone is formed in the spaced space between the band part and the vortex finder to allow air and fine dust to flow in the axial direction.
According to claim 1 or 6,
A dust collector, characterized in that each of the axial flow cyclones are arranged to face each other in parallel directions.
According to claim 1,
The casings and the vortex finders are each provided with seven dust collectors.
According to claim 1,
Dust collector, characterized in that four guide vanes are provided in each of the vortex finders.

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