KR102670729B1 - Dust collecting equipment - Google Patents

Abstract

The dust collection device according to an embodiment of the present invention includes a hood capable of generating suction force inside to suck in the treated material and an inhaler capable of generating a vortex in the lower space of the hood, and the inhaler is located in the lower space of the hood. A gas injection unit installed on the lower side of the hood to spray gas, a guide member with one side installed toward the vortex generator, which is a space surrounded by the gas injection unit, and a rotatable fan installed inside the hood to be located on the upper side of the vortex generator. can do.
Therefore, according to an embodiment of the present invention, a vortex can be generated under the hood. That is, in addition to the suction force generated by the hood, suction force is additionally generated by the vortex. Therefore, the area over which the suction force is affected increases or expands. Accordingly, dust can be collected not only in the area immediately below the hood but also on the outside of the hood in the width and length directions, thereby improving dust collection efficiency.

Description

Dust collecting equipment

The present invention relates to a dust collection device, and more specifically, to a dust collection device that can improve the dust collection efficiency of treated materials.

In general, large amounts of pollutants such as dust or fume are generated at industrial sites such as steel mills, foundries, coal-fired power plants, rice processing plants, and cement factories. These pollutants contaminate industrial sites and the surrounding environment and worsen the health of workers.

Therefore, a dust collection device is installed around the area or device where pollutants are generated. The dust collection device includes a hood, a duct connected to the hood and generating suction force, and a dust collection unit installed in the duct to filter out contaminants from the sucked air. This dust collection device sucks air mixed with pollutants through a hood and duct, filters out pollutants in the air through a dust collection unit, and collects dust. Then, the air from which pollutants have been filtered or removed is discharged to the outside of the duct.

However, according to this dust collection device, pollutants directly below the hood can be sucked in and collected, but there is a problem in that it is difficult to suck pollutants outside the hood in the width direction. Therefore, the dust collection efficiency of the dust collection device decreases, resulting in the problem of contaminants remaining at industrial sites.

Korean registered patent 10-1712827

The present invention provides a dust collection device that can improve the dust collection efficiency of treated materials.

The present invention provides a dust collection device that can increase the area affected by suction force.

A dust collecting device according to an embodiment of the present invention includes a hood capable of generating a suction force therein to suck in treated materials; and an inhaler capable of generating a vortex in the lower space of the hood; It includes: a gas injection unit installed on the lower side of the hood to spray gas into the lower space of the hood; and a guide member installed so that one side faces the vortex generator, which is a space surrounded by the gas injection portion. A fan installed inside the hood to be located above the vortex generator and rotatable; may include.

Each of the gas injection unit and the guide member has a shape extending in the vertical direction, the gas injection unit is provided with a nozzle for spraying gas, and the guide member may be connected to the gas injection unit to cover the nozzle.

The guide member may include a curved surface on which one side is concave.

The guide member may be provided in a shape such that a second circle formed along one side can circumscribe a first circle formed by rotation of the fan.

The gas injection unit and the guide member are provided in plural numbers, and the guide member is installed to be located at least partially between two adjacent gas injection units, and the one side is surrounded by the plurality of gas injection units. It is installed to face the vortex generator, which is a space, and the arrangement form where the plurality of gas injection units are arranged is a polygon in which the separation distance between the adjacent gas injection units is partially different, and the separation distance between the two gas injection units is relatively short. The extension length of the guide member positioned between the two gas injection units may be longer than that of the guide member positioned between the two gas injection units having a relatively long separation distance.

The positions of a guide member with a relatively long extension length and a guide member with a relatively short extension length may overlap in some areas, and the end of the guide member with a relatively short extension length may be positioned to protrude outside the overlapping area.

The vertical extension length of the guide member is shorter than the vertical extension length of the gas injection unit, and the guide member may be installed to be biased toward the lower end of the gas injection unit.

The nozzle may be installed to extend from the gas injection unit, and the nozzle may be provided such that an extension line extending from the gas injection unit in its extension direction faces the inner surface of the guide member.

The nozzle has one end connected to the gas injection unit and an opposite end of the one end, and the height of the other end through which gas is discharged may be the same, or the other end may be provided to be higher than the one end.

The inhaler is connected to a lower part of the hood so as to communicate with the hood, and includes a body having an internal space in which the gas injection unit and the guide member are accommodated, and the body has a first opening provided on one side and a body provided on the other side. It includes a second opening, wherein the body includes an upper member connected to a lower portion of the hood and having an opening in communication with the hood. a lower member spaced apart from the upper member; And a side member arranged in a direction crossing the direction in which the first and second openings are arranged, and connecting the upper member and the lower member, wherein the gas injection unit is positioned between the upper member and the lower member. It can be installed in any position.

A plurality of holes are provided in the lower member, and among the plurality of holes provided in the lower member, the inner diameter of the hole provided in the area facing the vortex generating part is smaller than the inner diameter of the hole provided in the area facing the outside of the vortex generating part. You can.

The lower member includes: a first lower plate spaced downward to face the upper member and provided with the plurality of holes; It may include second and third lower plates connected to both sides of the first lower plate in the alignment direction of the first and second open portions.

The inhaler may be installed outside the gas injection unit inside the body and include an auxiliary injection unit that sprays gas.

According to an embodiment of the present invention, a vortex can be generated under the hood. That is, in addition to the suction force generated by the hood, suction force is additionally generated by the vortex. Therefore, the area over which the suction force is affected increases or expands. Accordingly, dust can be collected not only in the area immediately below the hood but also on the outside of the hood in the width and length directions, thereby improving dust collection efficiency.

In addition, the guide members installed in each of the plurality of gas injection units facilitate the formation of rotating air currents and vortices, allow the formation of vortices with strong centrifugal force, and facilitate the maintenance of the vortices. Accordingly, the treated material can be easily sucked into the hood using the suction force generated by the vortex.

In addition, the amount of treated material sucked into the area where the vortex is generated by the airflow by the auxiliary spray unit can be increased, and the escape of the treated material can be suppressed, which has the effect of improving the dust collection efficiency of the treated material.

1 is a diagram conceptually showing a dust collection device according to a first embodiment of the present invention.
Figure 2 is a diagram showing an example in which the suction device of the dust collection device according to the first embodiment of the present invention is installed on the upper side of the rolling mill.
FIG. 3 is a view showing the duct and suction device of FIG. 2 located on the upper side of the rolling mill.
Figure 4 is a diagram showing a partial configuration and gas flow of an inhaler according to the first embodiment of the present invention.
Figure 5 is a plan view of the inhaler according to the first embodiment of the present invention as seen from above.
Figure 6 is a three-dimensional view showing a state in which a guide member is installed in the gas injection unit according to the first embodiment of the present invention.
Figure 7 is a plan view viewed from the top of the inhaler to explain a method of determining the curvature of a plurality of guide members.
Figure 8 is a diagram showing a gas injection portion and nozzle of an inhaler according to a first modification of the first embodiment.
Figure 9 is a diagram showing a gas injection portion and nozzle of an inhaler according to a second modification of the first embodiment.
Figure 10 is a diagram showing a gas injection portion and nozzle of an inhaler according to a third modification of the first embodiment.
Figure 11 is a diagram for explaining a guide member of an inhaler according to a fourth modification of the first embodiment.
Figure 12 is a diagram for explaining the lower member of the inhaler according to the fifth modification of the first embodiment.
Figure 13 is a plan view of the inhaler according to the second embodiment of the present invention as seen from above.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the attached drawings. However, the present invention is not limited to the embodiments below and will be implemented in various different forms. The present embodiments are merely intended to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. It is provided for the purpose of giving. The drawings may be exaggerated to explain embodiments of the present invention, and like symbols in the drawings refer to like elements.

The present invention relates to a dust collection device that can improve dust collection efficiency by increasing the area affected by suction power. More specifically, the present invention relates to a dust collection device capable of forming a vortex in the lower space of the hood.

A dust collection device is a device that collects dust by sucking or absorbing pollutants such as dust and fumes using suction power. Such dust collection devices can be installed in steel mills, for example. As a more specific example, the dust collector may be installed on the upper side of a rolling mill that rolls a slab manufactured by solidifying molten steel.

Of course, the installation location of the dust collection device is not limited to the rolling mill, and may be installed around various devices that generate pollutants within a steel mill or in areas where the devices are installed.

Additionally, the installation location of the dust collection device is not limited to a steel mill, and can be installed in various workplaces where dust collection is required. For example, dust collection devices can be installed in workplaces such as coal-fired power plants, rice processing plants, cement factories, and foundries.

1 is a diagram conceptually showing a dust collection device according to a first embodiment of the present invention. Figure 2 is a diagram showing an example in which the suction device of the dust collection device according to the first embodiment of the present invention is installed on the upper side of the rolling mill. FIG. 3 is a view showing the duct and suction device of FIG. 2 located on the upper side of the rolling mill. Figure 4 is a diagram showing a partial configuration and gas flow of an inhaler according to the first embodiment of the present invention. Figure 5 is a plan view of the inhaler according to the first embodiment of the present invention as seen from above.

Hereinafter, the dust collection device will be described with reference to FIGS. 1 to 4. At this time, the pollutants to be collected using the dust collection device are referred to as treated substances. This treatment product may include at least one of dust consisting of solid particles and gaseous fume. In addition, the area or area where the treated matter is to be sucked in and collected is called the treatment area. Accordingly, the treatment area can be described as the location or area where the dust collection device is installed.

Referring to Figures 1 and 2, the dust collection device includes a duct 1000 having an internal space through which processing matter can pass, a blower 2000 connected to the duct 1000 to generate suction force, and a plurality of devices for spraying gas. It is provided with an inhaler 3200 provided with a gas injection unit 3210, and includes a suction device 3000 that forms a vortex on the lower side of the hood 3100 connected to the duct 1000.

In addition, the dust collection device is connected to the duct 1000 to be located between the hood 3100 and the blower 2000, and includes a dust collection unit 4000 that collects or collects the processed material from the gas or gas passing through the duct 1000. do.

The duct 1000 is a passage through which processed materials and gas sucked into the hood 3100 pass. Here, the gas sucked into the hood 3100 may include the atmosphere existing around the dust collector and gas such as gas injected from the inhaler 3200, which will be described later.

The duct 1000 has one end connected to the hood 3100 and extends from the hood 3100. In addition, the duct 1000 has one end connected to the hood 3100 and an open end opposite the other end. Accordingly, the processed material sucked into the hood 3100 flows in through the opening provided at one end of the duct 1000, and the gas from which the processed material is removed by the dust collection unit 4000 is discharged to the outside through the opening at the other end.

The blower 2000 is a means for generating suction force inside the duct 1000 and the hood 3100. This blower 2000 may be installed inside the duct 1000 adjacent to the other end of the duct 1000. Of course, the present invention is not limited to this, and the blower 2000 may be installed outside the duct 1000 at a location adjacent to the other end of the duct 1000. The blower 2000 may be a means including, for example, a rotatable rotary body, a driving unit that rotates the rotary body, and a plurality of blades arranged in a circumferential direction of the rotary body and installed on the rotary body. Here, the driving unit may be, for example, a motor. Of course, the blower 2000 is not limited to the above-described example, and various means for blowing gas can be applied.

The dust collection unit 4000 is a means for removing and collecting dust from the gas flowing into the duct 1000. That is, the dust collection unit 4000 may be a means of separating solid dust particles and gaseous fumes that cause contamination from the gas, and allowing only the gas from which the dust and fumes have been removed to pass. This dust collection unit 4000 may be a means including a filtering unit that prevents dust and fume from passing through. Additionally, the dust collection unit 4000 is not limited to this and may be a wet dust collection unit that sprays a liquid, such as water or a chemical solution, into the gas flowing into the duct 1000 to separate dust and fume from the gas. As another example, the dust collector 4000 may be an electric dust collector that collects dust using an electric field.

Referring to FIG. 3, the suction device 3000 includes a hood 3100 connected to one end of the duct 1000 and a plurality of gas injection units 3210 that inject gas into the lower space of the hood 3100, and the hood It includes an inhaler 3200 located below 3100. In addition, the suction device 3000 is located inside the hood 3100 and supplies gas to each of a fan 3300 having a rotatable blade 3310 (see FIG. 4) and a plurality of gas injection units 3210. It includes a gas line 3400 and a connection part 3500 connecting the gas line 3400 and the gas injection unit.

The suction device 3000 is located in the area where dust collection is required, that is, the treatment area, and is connected to the duct 1000. At this time, the suction device 3000 is installed on the floor or in the processing area as shown in FIGS. 2 and 3, and is installed to be spaced apart from the upper side of the device that generates processing materials such as dust and fume, for example, the rolling mill 30. . For this purpose, the suction device 3000 may be mounted on the structure 20 located in the treatment area as shown in FIG. 2.

Here, the rolling mill 30 is a widely known device in the steelmaking field, and may be a means including a lower roll supporting the lower part of the cast steel 10 and an upper roll positioned to face the lower roll. In addition, at least one of the upper roll and the lower roll may be raised and lowered to adjust the gap between them, thereby rolling the cast steel 10.

Additionally, the suction device 3000 may be installed to be located on one side of the main target location where the processing material is to be suctioned. For example, when the main target location is the rolling mill 30, the suction device 3000 may be installed on one side of the rolling mill 30 above the rolling mill 30. At this time, when the direction in which the cast slab 10 moves toward the rolling mill 30 (Y-axis direction) is assumed to be forward, it is preferable to install the suction device 3000 so that it is located at the rear of the rolling mill 30. More specifically, in the suction device 3200, which will be described later, it is preferable to install the suction device 3000 so that one opening 3240d in the Y-axis direction (see FIG. 3) is located at the rear of the rolling mill 30.

The hood 3100 has an internal space through which processing matter can pass, and has an open end connected to the duct 1000 and an open end at the other end facing the suction device 3200.

The hood 3100 may have the same width (or inner diameter) in the vertical direction as shown in FIG. 3 . That is, the width of one end and the other end of the hood 3100 may be the same, and there may be no change in width between the one end and the other end. Additionally, each of one end and the other end of the hood 3100 may be provided with a width equal to or smaller than that of one end of the duct 1000. In this way, the hood 3100 having the same width (or inner diameter) in the vertical direction is called a first type hood.

The hood 3100 is not limited to the first type hood described above, and may have a shape whose width (or inner diameter) decreases toward one end of the duct 1000. At this time, one end of the hood 3100 connected to the duct 1000 may be provided to have the same size as one end of the duct 1000. Additionally, the duct 1000 may be connected to one end of the hood 3100 so as to be located at the center of the other end of the hood 3100. In this way, the hood 3100 whose width (or inner diameter) decreases from the other end to one end is called a second type hood.

The hood 3100 may be a first type hood as described above or a second type hood. At this time, when using the first type hood, the amount of treated matter sucked into the hood 3100 can be increased compared to when using the second type hood.

In the case of the second type hood, the suction power is strong because the center area of the other end of the hood 3100 based on the width direction is the area directly below one end of the duct 1000, but the edge area of the other end of the hood 3100 is the duct ( 1000) This is because the suction power is relatively weak because it is an area located on the outside of the group. Accordingly, the processing material in the central area inside the hood 3100 is easily sucked into the duct 1000, but the processing material in the edge area inside the hood 3100 may not be sucked into the duct 1000. To be more specific, the side walls extending in the circumferential direction of one end and the other end of the hood 3100 act as resistance that prevents the movement or flow of the processing material in the edge area inside the hood 3100. Accordingly, the processed material flowing into the edge of the hood 3100 may not be sucked into the duct 1000 and may be discharged out again through the other end of the hood 3100.

On the other hand, in the case of the first type hood, the suction power of the center area and the edge area inside the hood 3100 is uniform or equal. This is because, in the case of the first type hood, the width (or inner diameter) is the same in the vertical direction, and each one end and the other end of the hood 3100 is provided with a width equal to or smaller than one end of the duct 1000. Because. Therefore, when using the first type hood, the amount of treated material sucked into the duct 1000 can be increased compared to when using the second type hood.

Hereinafter, for convenience of explanation, the other end opening of the hood 3100 will be referred to as the intake port 3110 (see FIG. 3).

The fan 3300 is a means of generating suction force. This fan 3300 is installed to be located inside the hood 3100. More specifically, the fan 3300 may be installed to be accommodated inside the hood 3100 while being located at the same height as the opening 3241 provided in the upper member 3240a of the body 3240, which will be described later. Additionally, the fan 3300 is installed to be located at the center of the inner diameter of the hood 3100 and the center of the opening 3241 provided in the upper member 3240a. In addition, the fan 3300 is arranged so that its rotation center is concentric with the space surrounded by the plurality of gas injection units 3210 on the lower side of the hood 3100.

The fan 3300 may be provided to rotate by suction force or negative pressure generated inside the duct 1000 and the hood 3100. That is, when the blower 2000 operates, suction force is generated inside the duct 1000 and the hood 3100, and the fan 3300 can rotate due to this suction force. At this time, additional suction force is generated by the rotating operation of the fan 3300. That is, in addition to the suction force generated by the blower 2000, additional suction force is generated by the fan 3300. The fan 3300 may be a means including a rotatable rotating body 3320 and a plurality of blades 3310 mounted on the rotating body 3320 so as to be arranged in the circumferential direction of the rotating body 3320, as shown in FIG. .

Of course, the fan 3300 may be provided to rotate on its own. That is, the fan 3300 may include a driving unit that rotates the rotating body 3320, and the driving unit may include, for example, a motor.

3 to 5, the inhaler 3200 is provided with nozzles 3211 that each spray gas, and includes a plurality of gas injection units 3210 arranged and spaced apart in the circumferential direction of the hood 3100, and A guide member ( 3230).

The space surrounded by the plurality of gas injection units 3210 is a space in which vortices are generated or generated by the gas injected from the plurality of gas injection units 3210 and the rotation of the fan 3300. Therefore, hereinafter, the empty space surrounded by the plurality of gas injection units 3210 will be referred to as the vortex generating unit 3220.

In addition, the inhaler 3200 has an opening (hereinafter, a first opening 3240d) in an area and a side facing the inlet 3110 of the hood 3100, and includes a plurality of gas injection units 3210 and a plurality of gas injection units 3210. It may include a body 3240 having an internal space capable of accommodating the guide member 3230.

In addition, it may further include an auxiliary injection unit 3250 that is located outside the gas injection unit 3210 in the internal space of the body 3240 and sprays gas toward the gas injection unit 3210.

Referring to FIG. 3, the body 3240 includes an upper member 3240a and a lower member 3240b arranged to face each other and spaced apart in the vertical direction. In addition, the body 3240 is formed to extend in the vertical direction and is installed to connect the upper member 3240a and the lower member 3240b, and includes a pair of side members 3240c arranged to face each other. Accordingly, the body 3240 has an internal space surrounded by an upper member 3240a, a lower member 3240b, and a pair of side members 3240c. In addition, both sides in the direction intersecting the direction in which the pair of side members 3240c are arranged are open.

Hereinafter, the direction in which the upper member 3240a and the lower member 3240b extend or the direction in which the pair of side members 3240c are arranged is referred to as the first direction (X-axis direction), and the direction intersecting the first direction is referred to as the first direction. It is defined as 2 directions (Y-axis direction). And, the first direction is the longitudinal direction of the body 3240, the hood 3100, and the vortex generator 3220, and the second direction is the width direction of the body 3240, the hood 3100, and the vortex generator 3220. can be named

If the body 3240 is described again by reflecting the above-described first and second directions, the body 3240 is formed to extend in the first direction and includes an upper member 3240a and a lower member arranged to face each other up and down. It includes (3240b) and side members 3240c, each of which extends in the vertical direction (Z-axis direction) and is arranged to face each other in the first direction. At this time, one of the pair of side members 3240c connects one end of the upper member 3240a and one end of the lower member 3240b, and the other side member 3240c connects the other end of the upper member 3240a. Connect between the other ends of the lower member (3240b).

Accordingly, the body 3240 is closed on the upper and lower sides by the upper member 3240a and the lower member 3240b, and on both sides in the first direction by a pair of side members 3240c. Additionally, the body 3240 has both sides open in the second direction. Accordingly, the body 3240 can be described as having an internal space that is open on both sides in the second direction.

The suction device 3000 is installed so that one of the openings on both sides of the body 3240 in the second direction (hereinafter referred to as the first opening 3240d) is located at the rear of the rolling mill 30. . In other words, the first open portion 3240d of the body 3240 is installed closer to the rolling mill 30 than the second open portion 3240e, which is an open portion on the other side.

In this way, the processing area, that is, the first opening portion 3240d of the body 3240 located at the rear of the rolling mill 30, allows the processed material generated from the rolling mill 30 to enter the inside of the body 3240 or the vortex generator 3220. It serves as an inlet for inflow. Of course, processing matter can also flow into the body 3240 through the second opening 3240e of the body 3240. However, since the first opening 3240d is located relatively adjacent to the rolling mill 30 where a large amount of processing material is generated, the processing material flowing into the body 3240 through the first opening 3240d The amount is relatively large compared to the amount flowing through the second opening 3240e. Accordingly, the first opening 3240d can be explained as the main inlet through which the processing material flows.

The upper member 3240a is located between the plurality of gas injection units 3210 and the hood 3100, and the plurality of gas injection units 3210 are connected to its lower part and the hood 3100 is connected to its upper part. This upper member 3240a may have a plate shape extending in the first direction, for example, may be a rectangle whose length in the first direction is longer than the length in the second direction. Additionally, the upper member 3240a is provided to have a larger area than the suction port 3110 and the vortex generator 3220 of the hood 3100. That is, the length of the upper member 3240a in the first and second directions is longer than that of the suction port 3110 and the vortex generator 3220. Additionally, the upper member 3240a is installed so that the hood 3100 and the vortex generator 3220 are located at the center of the first and second directions. In addition, the upper member 3240a is provided with an opening 3241 communicating with the intake port 3110 at the area where the hood 3100 is connected, and this opening 3241 is provided to face the upper side of the vortex generating unit 3220. do. Accordingly, the upper part of the inner space of the body 3240, excluding the area where the intake port 3110 of the hood 3100 is located, is closed by the upper member 3240a.

And, as described above, the fan 3300 is installed to be accommodated inside the hood 3100. In this case, the fan 3300 is preferably installed to be located at the center of the opening 3241 of the upper member 3240a. That is, the fan 3300 is installed to be located at the center of the first and second directions in the opening 3241 of the upper member 3240a. At this time, the center of the opening 3241 of the upper member 3240a is provided to coincide with the center of the intake port 3110 of the hood 3100, so the fan 3300 will be located at the center of the intake port 3110 of the hood 3100. You can. In addition, the upper member 3240a and the hood 3100 are installed to coincide with the center of the vortex generator 3220, so that the center of the fan 3300 or the rotation center of the fan 3300 is the vortex generator 3220. coincides with the center of

The lower member 3240b is disposed spaced apart from the lower side of the upper member 3240a, and a plurality of gas injection units 3210 are connected to or supported on the lower member 3240b. This lower member 3240b may be provided in the same shape and size as the upper member 3240a. That is, the lower member 3240b may have a plate shape extending in the first direction, and the lengths in the first and second directions may be the same as the upper member 3240a. Accordingly, the lower side of the internal space of the body 3240 is closed by the lower member 3240b.

According to the body 3240 as described above, the upper part of the inner space of the body 3240 is closed by the upper member 3240a except for the area where the intake port 3110 of the hood 3100 is located, and the inner space is closed by the upper member 3240a. The lower side is closed by the lower member 3240b. Additionally, in the internal space of the body 3240, both sides in the first direction are closed by a pair of side members 3240c. Accordingly, the vortex generated in the vortex generator 3220 is formed to extend vertically between the upper member 3240a and the lower member 3240b. At this time, the hood 3100 is located on the upper side of the vortex generator 3220 to generate suction force, and the lower member 3240b is located on the lower side, so the vortex is at least between the upper member 3240a and the lower member 3240b. It can be created to be trapped in . That is, the vortex is not generated to deviate from the upper side of the upper member 3240a or the lower side of the lower member 3240b, but is generated between the upper member 3240a and the lower member 3240b.

The lower member 3240b may be provided with a hole h through which the processing material can pass. The hole h is provided to penetrate the lower member 3240b in the vertical direction. A plurality of holes (h) are provided, and it is preferable that the plurality of holes (h) are evenly distributed over the entire area of the lower member (3240b). That is, among the lower members 3240b, a plurality of holes h are provided in the area facing the vortex generating unit 3220 and the remaining areas.

The inner diameter of the hole h provided in the lower member 3240b may be 1 mm to 50 mm. More specifically, the hole (hereinafter referred to as the first hole (h ₁ )) provided in the area of the lower member 3240b facing the vortex generator 3220 may have an inner diameter of 1 mm to 10 mm, preferably 5 mm to 10 mm. . In addition, the hole (hereinafter referred to as the second hole (h ₂ )) provided in the area of the lower member 3240b located outside the vortex generating unit 3220 may have an inner diameter of 1 mm to 50 mm, preferably 20 mm to 40 mm. there is.

On the other hand, when the inner diameter of the first hole (h ₁ ) exceeds 10 mm, the inflow of external air through the first hole (h ₁ ) is facilitated to maintain the vortex formed between the upper member (3240a) and the lower member (3240b). can be difficult. In addition, when the inner diameter of the second hole (h ₂ ) exceeds 50 mm, the amount of external air flowing through the second hole (h ₂ ) is large, and this external air flows into the vortex generator 3220, preventing the vortex from being maintained. can do. If the inner diameter of the first and second holes (h ₁ , h ₂ ) is less than 1 mm, it may be difficult for particulate dust to enter, and thus dust collection efficiency may be reduced.

In this way, when the hole h is provided in the lower member 3240b, the lower inner space of the body 3240 is not completely closed. However, the hole h provided in the lower member 3240b is adjusted to the inner diameter as described above so that the processing material can be introduced and the vortex can be maintained without collapsing due to external air. Accordingly, a vortex can be formed between the upper member 3240a and the lower member 3240b.

The gas injection unit 3210 injects gas to create a rotating airflow or vortex in the lower space of the hood 3100 into the internal space of the body 3240. Here, the gas may be, for example, air. Of course, the gas is not limited to air, and various gases can be used.

The gas injection unit 3210 has a shape extending in the vertical direction as shown in FIGS. 3 and 4 and has an internal space through which gas can move or pass. In addition, the gas injection unit 3210 is provided with a nozzle 3211 that sprays gas to the outside. A plurality of nozzles 3211 are provided, and the plurality of nozzles 3211 are arranged in the direction in which the gas injection unit 3210 extends, that is, in the vertical direction.

A plurality of gas injection units 3210 are provided, and the plurality of gas injection units 3210 are arranged in the inner space of the body 3240 in the circumferential direction of the hood 3100, as shown in FIGS. 3 and 5. do.

The fact that the plurality of gas injection units 3210 are arranged in the circumferential direction of the hood 3100 does not mean that they are arranged in the shape of the hood 3100, and that the plurality of gas injection units 3210 are arranged in the width or width of the hood 3100. This may mean that they are listed in the circumferential direction of the longitudinal center. That is, the gas injection unit 3210 is centered on one point (hereinafter referred to as the reference position (P _s )) as shown in FIGS. 4 and 5 and is installed at a predetermined distance from the center. Here, the reference position (P _s ) may be the center of the hood 3100, the rotation center of the fan 3300 installed in the hood 3100, or the center of the rotating body 3320 constituting the fan 3300.

Accordingly, the reference position (P _s ) that serves as a standard for the arrangement of the plurality of gas injection units 3210, the center of the hood 3100, and the rotation center of the fan 3300 will be described using the same reference numeral P _s .

When arranging the plurality of gas injection units 3210 in a circumferential direction of the hood 3100, the separation distance between each of the plurality of gas injection units and the reference position P _S may be arranged to be the same. Of course, the separation distance between each of the plurality of gas injection units and the reference position ( _PS ) may be provided differently.

Additionally, the plurality of gas injection units 3210 are installed to be located outside the intake port 3110 of the hood 3100 in the horizontal direction, as shown in FIG. 3 . That is, based on the first and second directions, a plurality of gas injection units 3210 are located outside the intake port 3110 of the hood 3100. Accordingly, a vortex generator 3220, which is a space surrounded by a plurality of gas injection portions 3210 and a space where vortices are generated, is provided on the lower side of the hood 3100.

The overall shape of the vortex generator 3220 may vary depending on the arrangement and spacing of the plurality of gas injection units 3210. For example, there may be four gas injection units 3210 as shown in FIGS. 3 to 5 . Additionally, the four gas injection units 3210 (3210a to 3210d) may be arranged in a rectangular shape. That is, as shown in FIG. 5, the first gas injection unit 3210a and the second gas injection unit 3210b are aligned in the second direction (Y-axis direction), and the first and second gas injection units 3210a, 3210b) and the third and fourth gas injection units 3210c and 3210d may be arranged in the first direction (X-axis direction). At this time, the third gas injection unit 3210c and the fourth gas injection unit 3210d are aligned in the second direction (Y-axis direction). And, relative to the first direction, the positions of the first gas injection unit 3210a and the second gas injection unit 3210b are the same, and the positions of the third gas injection unit 3210c and the fourth gas injection unit 3210d are may be the same. In addition, relative to the second direction, the positions of the first gas injection unit 3210a and the fourth gas injection unit 3210d are the same, and the positions of the second gas injection unit 3210b and the third gas injection unit 3210c are may be the same. And, the separation distance between the first gas injection unit 3210a and the second gas injection unit 3210b and the separation distance between the third gas injection unit 3210c and the fourth gas injection unit 3210d are the first gas injection unit 3210a. ) and the fourth gas injection unit 3210d may be arranged to be shorter than the separation distance between the second gas injection unit 3210b and the fourth gas injection unit 3210d.

Accordingly, the first to fourth gas injection units 3210a to 3210d may have a rectangular shape as shown in FIG. 5 . More specifically, the shape connecting the upper centers of each of the first to fourth gas injection units 3210a to 3210d may be rectangular, without using the reference position P _S . Accordingly, the space surrounded by the first to fourth gas injection units 3210a to 3210d, that is, the vortex generating unit 3220, has a rectangular cross-sectional shape.

In this way, making the arrangement of the first to fourth gas injection units 3210a to 3210d rectangular means that the inhaler 3200 can be installed without or minimizing interference with surrounding devices or structures compared to when the arrangement is square. Because it is advantageous to do so.

Hereinafter, the arrangement of the plurality of gas injection units 3210 will be described in more detail. At this time, a case where four gas injection units 3210 are provided and the arrangement shape of the gas injection units 3210 is rectangular will be described as an example.

Nozzles 3211 (3211a to 3211d) are provided in each of the first to fourth gas injection units 3210a to 3210d, and guide members 3230 (3230a to 3230d) are provided. For convenience of explanation, the nozzles provided in each of the first to fourth gas injection units 3210a to 3210d will be referred to as first to fourth nozzles 3211a to 3211d. And, the guide members connected to each of the first to fourth gas injection units 3210a to 3210d are called first to fourth guide members 3230a to 3230d.

The first to fourth nozzles 3211a to 3211d face different directions, and the first to fourth gas injection units 3210a to 3210d are installed so as not to face each other. Each of the first to fourth nozzles 3211a to 3211d may be in the form of a tube protruding outward from the gas injection units 3210a to 3210d, as shown in FIGS. 4 and 5 . That is, each of the first to fourth nozzles 3211a to 3211d may be shaped like a pipe with a passage through which gas can pass.

At this time, the extension length of each of the first to fourth nozzles 3211a to 3211d may be greater than 0 mm and less than or equal to 100 mm, and preferably may be 10 mm to 20 mm (more than 10 mm and less than 20 mm).

Meanwhile, for example, if the extension length of each of the first to fourth nozzles (3211a to 3211d) exceeds 100 mm, a problem of interference with the guide members (3230a to 3230d) may occur.

And, the inner diameter of each of the first to fourth nozzles 3211a to 3211d may be 3 mm to 10 mm (3 mm or more, 10 mm or less), and more preferably 5 mm to 8 mm (5 mm or more, 8 mm or less).

Meanwhile, for example, if the inner diameter of each of the first to fourth nozzles 3211a to 3211d is less than 3 mm, the flow rate of the injected gas is small, making it difficult to form a vortex or clogging may occur. And since a plurality of the first to fourth nozzles 3211a to 3211d are provided, there is no need to provide their inner diameters to exceed 10 mm.

Additionally, the angle formed by each of the first to fourth nozzles 3211a to 3211d with the gas injection units 3210a to 3210d may be vertical. In other words, each of the first to fourth nozzles 3211a to 3211d may be installed parallel to the lower member 3240b. Accordingly, the gas discharged from each of the first to fourth nozzles 3211a to 3211d may be parallel or 0° to the lower member 3240b. To explain this in other words, the heights of one end and the other end of each of the first to fourth nozzles 3211a to 3211d may be the same.

In addition, each of the first to fourth nozzles 3211a to 3211d is provided so that the end (the other end) through which gas is discharged faces the guide members 3230a to 3230d. For a more specific description, the extension line connecting one end of the nozzle 3211 connected to the gas injection unit 3210 and the other end, which is the opposite end of the nozzle 3211, is called a nozzle extension line. Reflecting this and explaining again the positions of the first to fourth nozzles (3211a to 3211d), each of the first to fourth nozzles (3211a to 3211d) has a nozzle extension line (L _{1 )} , as shown in FIG. to L ₄ ) are provided so that they can face the inner surface of or be connected to the inner surface of the guide members (3230a to 3230d) installed in each gas injection unit (3210a to 3210b). More specifically, the nozzle extension lines (L ₁ to L ₄ ) of each of the first to fourth nozzles (3211a to 3211d) can be connected to the tip (or other end) of the inner surfaces of the guide members (3230a to 3230d). In other words, the first to fourth nozzles 3211a so that the nozzle extension lines L ₁ to L ₄ of each of the first to fourth nozzles 3211a to 3211d can be connected to the tip of the inner surface of the guide members 3230a to 3230d. to 3211d) are prepared.

To explain in more detail with reference to FIG. 5, the four sides of a rectangular shape provided by connecting the upper ends of the first to fourth gas injection units 3210a to 3210d so as not to pass the reference position P _s are divided into the first to fourth sides of the rectangular shape. It is named the fourth side (S ₁ to S ₄ ). And, the side connecting the first gas injection unit 3210a and the second gas injection unit 3210b is the first side (S ₁ ), and the second gas injection unit 3210b and the third gas injection unit 3210c are The connecting side is the second side (S ₂ ), the side connecting the third gas injection unit 3210c and the fourth gas injection unit 3210d is the third side (S ₃ ), and the fourth gas injection unit 3210d is The side connecting the first gas injection unit 3210a is called the fourth side (S ₄ ).

Referring to FIG. 5, the first nozzle 3211a is installed so that its nozzle extension line L ₁ intersects the first side S ₁ while being connected to the inner surface of the tip of the first guide member 3230a, and the second nozzle 3211a is connected to the inner surface of the tip of the first guide member 3230a. The nozzle 3211b is installed so that its extension line L ₂ is connected to the inner surface of the tip of the second guide member 3230b and intersects the second side S ₂ . In addition, the third nozzle 3211c is installed so that its nozzle extension line L ₃ is connected to the inner surface of the tip of the third guide member 3230c and intersects the third side S ₃ , and the fourth nozzle 3211d is installed so that the nozzle extension line (L ₄ ) is connected to the inner surface of the tip of the fourth guide member (3230d) and intersects the fourth side (S ₄ ). And, at this time, the first nozzle 3211a is installed so that the other end that sprays gas is directed toward the second side (S ₂ ), and the third nozzle 3211c is installed so that the other end that sprays gas is directed toward the fourth side (S ₃ ). It can be.

The purpose of adjusting the arrangement of the first to fourth nozzles 3211a to 3211d in this way is to form a rotating airflow by the gas discharged from the first to fourth nozzles 3211a to 3211d. More specifically, this is to form a rotating airflow in a circular or oval shape by the gas discharged from the first to fourth nozzles 3211a to 3211d.

Meanwhile, there may be a method of arranging each of the first to fourth nozzles 3211a to 3211d so that the nozzle extension lines (L ₁ to L ₄ ) are parallel to the first to fourth sides (S ₁ to S ₄ ). In other words, the extension line (L ₁ ) of the first nozzle (3211a) is parallel to the first side (S ₁ ), and the extension line (L ₂ ) of the second nozzle (3211b) is parallel to the second side (S ₂ ). They are parallel, and the extension line (L ₃ ) of the third nozzle (3211c) is parallel to the third side (S ₃ ), and the extension line (L] ₄ of the fourth nozzle (3211d) is parallel to the fourth side (S ₄ ). It can be placed side by side with .

However, in an arrangement where a plurality of gas injection units 3210 are arranged, when the separation distance between adjacent gas injection units is a different polygon, the first to fourth sides S ₁ to S ₄ are parallel to each other. If the first to fourth nozzles 3211a to 3211d are arranged so that a rotating airflow cannot be formed or is difficult to form.

Here, the fact that the distance between adjacent gas injection units is different from each other may mean that the aspect ratio is less than or greater than 1.

Accordingly, when the arrangement of the plurality of gas injection units 3210a to 3210d has a polygonal aspect ratio of less than 1 or more than 1, the nozzle extension lines L ₁ to L ₄ each have the first to fourth guide members 3230a. to 3230d) The positions of the plurality of nozzles 3211a to 3211d are adjusted so that they can be connected to the inner surface of the member. Accordingly, the nozzle extension lines (L ₁ to L ₄ ) of the plurality of nozzles 3211a to 3211d may intersect with the sides (S ₁ to S ₄ ) connecting the plurality of gas injection units 3210a to 3210d.

Meanwhile, as described above, the first nozzle 3211a is arranged so that its other end faces the second side S ₂ , and the third nozzle 3211c is arranged so that its other end faces the fourth side S ₄ . Accordingly, the gas discharged from the first nozzle 3211a may interfere with or collide with the gas discharged from the second nozzle 3211b, and the gas discharged from the third nozzle 3211c may be discharged from the fourth nozzle 3211d. It may interfere with or collide with exposed gases. This interference of gas can act as a factor that hinders the formation of rotating airflow. Accordingly, it may be difficult to form a stable rotating airflow using only the plurality of gas injection units 3210, and accordingly, the creation of a vortex may be difficult.

Additionally, since the plurality of gas injection units 3210 are positioned spaced apart from each other, the vortex generating unit 3220 is exposed through the space between the gas injection units 3210. Accordingly, outdoor air outside the vortex generator 3220 may flow into the vortex generator 3220 through the space between the gas injection units 3210. At this time, when a vortex is generated in the vortex generator 3220, the vortex may not be maintained by the inflow of external air. That is, when the flow of gas injected from the plurality of gas injection units 3210 collides with the external air, the gas does not rotate and flow, and thus the vortex may not be maintained. In this case, the suction power caused by the eddy current is weak, making it difficult to inhale the dust, or the dust collection efficiency may be reduced.

Therefore, in order to stably generate a rotating airflow by the gas injected from the plurality of gas injection units 3210 and to suppress the inflow of external air into the vortex generator 3220, a plurality of gas injection units ( 3210) A guide member 3230 is installed on each.

Figure 6 is a three-dimensional view showing a state in which a guide member is installed in the gas injection unit according to the first embodiment of the present invention.

As shown in FIGS. 3, 4, and 6, the guide member 3230 extends in the direction in which the gas injection unit 3210 extends, that is, in the vertical direction. The vertical extension length of the guide member 3230 can be changed in various ways. Taking the first gas injection unit 3210a and the first guide member 3230a of FIG. 6 as an example, the extension length of the first guide member 3230a in the vertical direction is first as shown in FIG. 6. It may be shorter than the gas injection unit 3210a or may be the same as the first gas injection unit 3210a. That is, the vertical length of the first guide member 3230a may be 100% or less of the gas injection portion. In addition, when the vertical length of the first guide member 3230a is shorter than that of the first gas injection unit 3210a, the vertical length of the first guide member 3230a is 30% of the first gas injection unit 3210a. It may be more than or less than 100%. Figure 6 shows an example in which the vertical length of the first guide member 3230a is 90% or more and less than 100% of the gas injection portion. At this time, the first guide member 3230a may be installed so that its vertical center is located at the vertical center of the first gas injection unit 3210a. Here, only the vertical length of the first guide member is described, but the vertical length of the second to fourth guide members (3230b to 3230d) is also 30% or more of the second to fourth gas injection portions (3210b to 3210d). , is provided at 100% or less.

This guide member 3230 is connected to the gas injection unit 3210 so as to be located at least partially between two gas injection units arranged next to each other, as shown in FIG. 5 .

Additionally, the guide member 3230 may be formed to have a curvature. To explain more specifically, when the side of the guide member 3230 facing the vortex generator 3220 is called one side (or inner side), and the side opposite to the one side is called the other side (or outer side), one side is concave. It can be prepared to take shape. That is, the guide member 3230 may be bent between two adjacent gas injection units so that one side of the guide member 3230 has a concave shape. The guide member 3230 is provided to have a curvature or one side to be concave to make it easier to form a rotating air flow with gas injected from the plurality of gas injection units 3210. It is for this purpose. A detailed description of the curvature or shape of the guide member 3230 will be provided later.

A plurality of guide members 3230 are provided and connected to each of the plurality of gas injection units 3210. In a more specific example, as shown in FIG. 5, the first guide member 3230a has one end positioned between the first gas injection unit 3210a and the second gas injection unit 3210b, It is connected to the injection unit 3210a, and the second guide member 3230b has one end of the second gas injection unit 3210b positioned between the second gas injection unit 3210b and the third gas injection unit 3210c. connected. In addition, the third guide member 3230c has one end connected to the third gas injection unit 3210c so as to be located between the third gas injection unit 3210c and the fourth gas injection unit 3210d, and the fourth guide member One end of 3230d is connected to the fourth gas injection unit 3210d so as to be located between the fourth gas injection unit 3210d and the first gas injection unit 3210a.

And, at this time, the first to fourth guide members 3230a to 3230d are positioned to cover the nozzles 3211a to 3211d so that the nozzles 3211a to 3211d are not exposed to the outside of the vortex generating unit 3220. That is, with respect to the center of the vortex generator 3220 or the center of the fan 3300, one end of each of the first to fourth guide members 3230a to 3230d is larger than the first to fourth nozzles 3211a to 3211d. It is provided to be located far from the center. In other words, the first to fourth nozzles 3211a to 3211d are arranged to be adjacent to the center of the vortex generator 3220 or the center of the fan compared to one end of each of the first to fourth guide members 3230a to 3230d. do.

Additionally, in each guide member (3230a to 3230d), the other end (tip), which is the opposite end, is installed to be spaced apart from the gas injection unit facing the other end. As a result, a gap is created between the guide member 3230 and the gas injection portion facing each other. As a specific example, as shown in FIG. 5, the other end of the first guide member 3230a is spaced apart from the second gas injection unit 3210b, and the other end of the second guide member 3230b is spaced apart from the third gas injection unit 3210c. ), the other end of the third guide member 3230c is spaced apart from the fourth gas injection portion 3210d, and the other end of the fourth guide member 3230d is spaced apart from the first gas injection portion 3210a. Therefore, between the other end of the first guide member 3230a and the second gas injection unit 3210b, between the other end of the second guide member 3230b and the third gas injection unit 3210c, and between the other end of the third guide member 3230c and the third gas injection unit 3210b. A gap is provided between the four gas injection units, the other end of the fourth guide member 3230d, and the first gas injection unit 3210a.

In this way, as the guide member 3230 is positioned between two adjacent gas injection units, at least a portion of the space between the gas injection units 3210 is closed by the guide member 3230. In other words, of the vortex generating portion 3220, at least an area facing the guide member 3230 is not exposed and is covered by the guide member 3230. The plurality of guide members 3230 provided to cover the vortex generator 3220 serve to block or shield external air from flowing into the vortex generator 3220. That is, the guide member 3230 prevents the movement of external air and prevents it from flowing into the vortex generating unit 3220. Accordingly, the vortex can be maintained more stably within the vortex generating unit 3220.

And, as described above, one end and the other end of the guide member 3230 are not connected to each of the two adjacent gas injection units 3210, but a gap is provided between the other end and the gas injection unit 3210. did. This gap is for allowing the processed material outside the vortex generating unit 3220 to flow into the vortex generating unit 3220. That is, when the guide member 3230 is installed to connect two gas injection units 3210 disposed adjacently and completely closes the space between the two gas injection units 3210, the outside treatment material flows into the vortex generating unit. It is difficult to enter (3220). Accordingly, the dust collection efficiency of the treated material may decrease. Therefore, a gap is provided between the guide member 3230 and the gas injection unit 3210 to allow the processing material to flow in.

In this way, the guide member 3230 makes it easier for a rotating air flow to be formed and allows external processing material to flow into the vortex generating unit 3220 while blocking the inflow of external air so that the vortex is maintained.

Figure 7 is a plan view viewed from the top of the inhaler to explain a method of determining the curvature of a plurality of guide members.

The guide member 3230 may be provided so that one side thereof has a concave shape. The purpose of providing one side of the guide member 3230 with a curvature is to generate a rotating airflow in which the gas rotates in a circular manner by the gas injected from the plurality of gas injection units 3210, as described above. . That is, when the flow of gas injected from each of the plurality of gas injection units 3210 is connected, the shape is to be circular or oval.

When gas is injected from each of the plurality of gas injection units 3210, the gas may flow along one side of the guide member 3230 due to the Coanda effect. At this time, the plurality of guide members 3230 are located between two adjacent gas injection units 3210, and one side thereof is provided with a curved surface, so that the gas flows along one side of the plurality of guide members 3230. A rotating air current is formed according to the flow. In other words, a rotating airflow in which the gas rotates in a circular or oval shape is formed.

In providing the guide members (3230: 3230a to 3230d) in a shape with a curvature such that one side is a concave surface, a circle (C ₂₁ to C 21 ) formed along one side is used. C ₂₄ ) is provided to have a shape that can contact or circumscribe the circle (C ₁ ) formed by the rotation of the fan 3300.

Here, the circle C ₁ formed by the rotation of the fan 3300 may be determined by the rotation radius of the fan 3300. That is, a circle whose radius is the distance between the other end, which is the opposite end of the blade 3310 of the fan 3300, connected to the rotating body 3320, and the center (P _s ) of the rotating body 3320 of the fan 3300 ( It is set as the first circle (C ₁ )).

In addition, a circle (C ₂₁ to Forming a circle (C ₂₄ ) means forming a circle (hereinafter referred to as the second circle (C ₂₁ to C 21 It may mean drawing C ₂₄ )).

Accordingly, in providing the guide members (3230: 3230a to 3230d), the second circle (C ₂₁ to 3230d) The curvature or shape of the guide member 3230 is determined so that C ₂₄ ) can be circumscribed with the first circle C ₁ .

Hereinafter, a method of preparing the first to fourth guide members 3230a to 3230d will be sequentially described with reference to (a) to (d) of FIG. 7.

The first guide member 3230a has a shape or curvature such that the second circle (C ₂₁ ) formed along one side thereof can be circumscribed with the first circle (C ₁ ), as shown in (a) of FIG. 7 A catalog is provided.

Additionally, the third guide member 3230c connected to the third gas injection unit 3210c may be provided to be symmetrical to the first guide member 3230a. That is, the third guide member 3230c has one end connected to the third gas injection unit 3210c as shown in (b) of FIG. 7, and the second circle C ₂₃ formed along one side of the third guide member 3230c is connected to the first gas injection unit 3210c. It is prepared to have a shape that can be circumscribed with a circle (C ₁ ). At this time, the position where the second circle (C ₂₃ ) by the third guide member (3230c) circumscribes the first circle (C ₁ ) is the position where the second circle (C ₂₁ ) by the first guide member (3230a) and the first circle (C 1 ) are circumscribed. It may be a position facing the position where the circle (C ₁ ) is circumscribed.

As shown in (c) of FIG. 7, one end of the second guide member 3230b is connected to the second gas injection unit 3210b, and the second circle C 22 formed along one side of the second circle is the first circle (C ₂₂ ). It is prepared to have a shape that can be circumscribed with C ₁ ). At this time, the position where the second circle (C ₂₂ ) and the first circle (C ₁ ) by the second guide member (3230b) are circumscribed are the second circle (C) by the first and third guide members (3230a, 3230c). ₂₁ , C ₂₃ ) and the first circle (C ₁ ) may be different from the circumscribed position.

Additionally, the fourth guide member 3230d connected to the fourth gas injection unit 3210d may be provided to be symmetrical with the second guide member 3230b. That is, the fourth guide member 3230d has one end connected to the fourth gas injection unit 3210d as shown in (d) of FIG. 7, and the second circle C ₂₄ formed along one side of the fourth guide member 3230d is connected to the first gas injection unit 3210d. It is prepared to have a shape that can be circumscribed with a circle (C ₁ ). At this time, the position where the second circle (C ₂₄ ) by the fourth guide member (3230d) circumscribes the first circle (C ₁ ) is the position where the second circle (C ₂₂ ) and the first circle (C 1 ) by the second guide member (3230b) are circumscribed. It may be a position facing the position where the circle (C ₁ ) is circumscribed.

And as shown in (d) of FIG. 7, the lengths of the plurality of guide members 3230a to 3230d may be different. That is, the extended length of the first and third guide members 3230a and 3230c installed between the gas injection units 3210 with a relatively short separation distance is similar to that of the first and third guide members 3230a and 3230c installed between the gas injection units 3210 with a relatively long separation distance. It is preferable that the guide members 3230b and 3230d be longer than the second and fourth guide members 3230b and 3230d.

In this way, providing a long extension length of the guide member 3230 installed between the gas injection units 3210 with a relatively short separation distance means that the gas flows along one side of the guide member 3230 and is adjacent to or adjacent to the gas injection unit 3210. This is because the gas is relatively easy to transfer to the other positioned guide member 3230. That is, even if the guide member 3230 provided between the gas injection units 3210 having a long separation distance is provided to be long, the distance between the gas injection units 3210 is already long, so the distance between the guide members 3230 is long. For example, even if the second guide member 3230b is provided with a length equal to that of the first guide member 3230a, the distance between the second gas injection unit 3210b and the third gas injection unit 3210c The distance is already long, and therefore the separation distance between the second guide member 3230b and the third guide member 3230c is long. Therefore, even if the length of the second guide member 3230b is the same as the length of the first guide member 3230a, the amount of gas flowing along the second guide member 3230b transferred to the third guide member 3230c is The amount of gas flowing along the first guide member 3230a may be smaller than the amount delivered to the second guide member 3230b.

However, when the guide members 3230 provided between gas injection units having a short distance between each other are provided to be long, gas transmission is easier because the distance between the guide members 3230 is close.

And, the space between the first gas injection unit 3210a and the fourth gas injection unit 3210d is a space facing the first open portion 3240d of the body 3240. Accordingly, when the length of the fourth guide member (3230d) located between the first gas injection unit (3210a) and the fourth gas injection unit (3210d), which have a long separation distance, is lengthened, the inflow amount of the processed material is reduced, thereby lowering the dust collection efficiency. can be reduced. Likewise, the space between the second gas injection unit 3210b and the third gas injection unit 3210c, which have a long separation distance, is also a space facing the second open portion 3240e of the body 3240. Accordingly, when the length of the second guide member (3230b) located between the second gas injection unit (3210b) and the third gas injection unit (3210c) is lengthened, the inflow amount of the treated material may be reduced and the dust collection efficiency may be reduced. .

In addition, in the case of two guide members having different lengths and positioned adjacent to each other, the positions of the two guide members partially overlap and the positions of the other ends are different from each other. That is, the guide member with a long extension length and the guide member with a short extension length are provided so that the positions of some areas thereof overlap. Additionally, the other end of the guide member, which has a relatively short extension length, is formed to protrude beyond the overlapping area.

For more specific explanation, the direction from one end of the guide member to the other end is defined as forward. At this time, in two guide members having different lengths and positioned adjacent to each other, the other end of the longer guide member is positioned behind the other end of the shorter guide member.

Taking the first and second guide members 3230a and 3230b as an example, the other end of the first guide member 3230a will be located rearward compared to the other end of the second guide member 3230b based on the first direction. You can. And, in the first guide member 3230a, the area from the other end to a position facing one end of the second guide member 3230b may overlap with the second guide member 3230b. Accordingly, the gas flowing along one side of the first guide member 3230a can be easily transferred to one side of the second guide member 3230b. Hereinafter, the first and second guide members 3230a and 3230b will be described in more detail using the XY coordinates shown in (d) of FIG. 7. For this purpose, the intersection point where the X-axis and Y-axis intersect is defined as the reference point (P ₀ ). And, in _{each of} the In addition, the point where a line ( _{perpendicular} ) connected perpendicularly to the X-axis from one end of the first guide member 3230a meets on the The point where the line (perpendicular) connected perpendicularly to the X-axis meets on the X-axis is defined as the second point (P ₂ ). In addition, the point where a line ( _{perpendicular} ) connected perpendicularly to the X-axis from the other end of the first guide member 3230a meets on the The point where the line (perpendicular) connected perpendicular to the X-axis meets on the X-axis is defined as the fourth point (P ₄ ). Referring to (d) of FIG. 7, the positions of the third point (P ₃ ) and the fourth point (P ₄ ) on the X-axis may be different. That is, the third point (P ₃ ) may be located behind the fourth point (P ₄ ) on the X-axis. In other words, the fourth point (P ₄ ) may be located ahead of the third point (P ₃ ) on the X-axis. Here, the positions of the third and fourth points P ₃ and P ₄ are the positions of the other ends of the first and second guide members 3230a and 3230b on the X-axis, as described above. Therefore, the fact that the third point (P ₃ ) can be located rearward compared to the fourth point (P ₄ ) on the This means that it can be located rearward compared to the other end. In addition, the fact that the fourth point (P ₄ ) can be located forward compared to the third point (P ₃ ) means that the other end of the second guide member (3230b) is closer to the other end of the first guide member (3230a) on the X-axis. This means that it can protrude forward. And, based on the position on the X-axis, the first guide member 3230a and the second guide member 3230b may be provided to overlap in some areas. That is, with respect to the position on the To explain this in more detail, the first guide member 3230a extends from the first point (P ₁ ) to the third point (P ₃ ) based on the It can be extended from (P ₂ ) to the fourth point (P ₄ ). At this time, the first guide member (3230a) extends behind the second point (P ₂ ) and the second guide member (3230b) does not extend, and in front of the third point (P ₃ ) the second guide member (3230a) extends. 3230b) may be extended, and the first guide member 3230a may not be extended. And, the first guide member 3230a and the second guide member 3230b may extend from the second point (P ₂ ) to the third point (P ₃ ). That is, a partial area of each of the first and second guide members 3230a and 3230b may extend from the second point (P ₂ ) to the third point (P ₃ ). Accordingly, the first guide member 3230a and the second guide member 3230b may have the same or overlapping locations from the second point P ₂ to the third point P ₃ . And, the fourth point (P ₄ ) may be located in front of the area from the second point (P ₂ ) to the third point (P ₃ ). This is the area of the second guide member 3230b in front of the area where the first guide member 3230a and the second guide member 3230b overlap (the area from the second point (P ₂ ) to the third point (P ₃ )). This means that the other end can protrude.

Taking the third and fourth guide members 3230c and 3230d as an example, the other end of the third guide member 3230c will be located forward compared to the other end of the fourth guide member 3230d based on the first direction. You can. And, in the third guide member, an area from the other end to a position facing one end of the fourth guide member 3230d may overlap with the fourth guide member. Accordingly, the gas flowing along one side of the third guide member 3230c can be easily transferred to one side of the fourth guide member 3230d. Hereinafter, the third and fourth guide members 3230c and 3230d will be described in more detail using the XY coordinates shown in (d) of FIG. 7. The third and fourth guide members 3230c and 3230d are similar to the first and second guide members 3230a and 3230b described above. For explanation, the point where the line (perpendicular) connected perpendicularly to the X-axis from the other end of the fourth guide member 3230d meets on _the The point where the line (perpendicular) connected perpendicular to the X-axis from the other end of , meets on the X-axis is defined as the sixth point (P ₆ ). In addition, the point where a line ( _{perpendicular} ) connected perpendicularly to the X-axis from one end of the fourth guide member 3230d meets on the The point where the line (perpendicular) connected perpendicularly to the X-axis meets on the X-axis is defined as the 8th point (P ₈ ). Referring to (d) of FIG. 7, the sixth point (P ₆ ) may be located in front of the fifth point (P ₅ ) on the X-axis. In other words, the fifth point (P ₅ ) may be located rearward compared to the sixth point (P ₆ ) on the X-axis. Here, the fact that the sixth point (P ₆ ) can be located in front of the fifth point (P ₅ ) on the X-axis means that the other end of the third guide member (3230c) on the This means that it can be located forward compared to the other end. In addition, the fact that the fifth point (P ₅ ) can be located rearward compared to the sixth point (P ₆ ) means that the other end of the fourth guide member (3230d) is closer to the other end of the third guide member (3230c) on the X-axis. This means that it can protrude backwards. And, based on the position on the X-axis, the third guide member 3230c and the fourth guide member 3230d may be provided to overlap in some areas. That is, with respect to the position on the To explain this in more detail, the third guide member 3230c extends from the 6th point (P ₆ ) to the 8th point (P ₈ ) based on the It can be extended from (P ₅ ) to point 7 (P ₇ ). At this time, the fourth guide member (3230d) extends behind the sixth point ( _P6 ) and the third guide member (3230c) does not extend, and in front of the seventh point ( _P7 ) the third guide member (3230d) extends behind the sixth point (P6). 3230c) may be extended, and the fourth guide member 3230d may not be extended. Additionally, the third guide member 3230c and the fourth guide member 3230d may extend from the sixth point (P ₆ ) to the seventh point (P ₇ ). That is, a partial area of each of the third and fourth guide members 3230c and 3230d may extend from the sixth point (P ₆ ) to the seventh point (P ₇ ). Accordingly, the third guide member 3230c and the fourth guide member 3230d may have the same or overlapping positions in the area from the sixth point (P ₆ ) to the seventh point (P ₇ ).

In this way, when providing the guide member 3230, the second circles C ₂₁ to C ₂₄ formed along one side of the guide member 3230 are provided in a shape that can circumscribe the first circle C ₁ . Additionally, in two guide members that are located adjacent to each other and have different lengths, the other end of the longer guide member is located behind the other end of the shorter guide member, and the positions of some areas overlap. As a result, the gas discharged from the plurality of gas injection units 3210 can flow along one side of the plurality of guide members 3230 so that the airflow formed becomes a rotating airflow.

Additionally, the rotating airflow formed in this way becomes a vortex such as a vortex or tornado due to the suction force generated by the rotation of the fan 3300. That is, a vortex is generated in the vortex generating unit 3220, which is a space surrounded by a plurality of gas injection units 3210. In addition, the circular movement of the gas becomes smoother due to the plurality of guide members 3230, and as a stable rotating airflow is formed, the creation and maintenance of vortices becomes easier. Accordingly, a vortex with increased centrifugal force may be formed. Accordingly, the area where the suction force acts or the suction force affects the area is increased, not only in the area directly under the hood 3100, but also in the area outside the hood 3100 in the width and length directions. Accordingly, not only the area directly below the hood 3100 but also the treated material outside the hood 3100 in the width and length directions can be sucked in, thereby improving dust collection efficiency.

The auxiliary injection unit 3250 blocks the processing material from escaping to the outside of the internal space of the body 3240 and allows the processing material exiting the vortex generating unit 3220 to flow back into the vortex generating unit 3220. Spray gas to create an air current. This auxiliary injection unit 3250 may be provided in the same shape as the gas injection unit 3210 described above. That is, the auxiliary injection unit 3250 is provided to extend in the vertical direction as shown in FIGS. 3 and 4. Additionally, the auxiliary injection unit 3250 is provided with a plurality of nozzles (hereinafter referred to as auxiliary nozzles 3251) that each inject gas. A plurality of auxiliary nozzles 3251 are arranged in the direction in which the auxiliary injection unit 3250 extends, that is, in the vertical direction. Additionally, each of the plurality of auxiliary nozzles 3251 (3251a to 3251d) may be in the form of a tube protruding outward from the gas injection unit, as shown in FIG. 4.

The auxiliary injection unit 3250 is installed inside the body 3240 and outside the gas injection unit 3210. That is, the auxiliary injection unit 3250 is located outside the gas injection unit 3210 based on the first direction. Additionally, the auxiliary injection unit 3250 may be positioned to be biased toward one side of the second direction, and as shown in FIG. 3, the second open portion 3240e of the first and second open portions 3240d and 3240e It is desirable to be placed relatively adjacent to .

A plurality of auxiliary injection units 3250 are provided, and the plurality of auxiliary injection units 3250 are installed to be spaced apart in the first direction. In a more specific example, two auxiliary injection units (3250a, 3250b) are provided, a first auxiliary injection unit (3250a) is located outside the second gas injection unit (3210b), and a third gas injection unit (3250a) is provided. A second auxiliary injection unit 3250b may be located outside of 3210c.

The auxiliary injection unit 3250 is provided with an auxiliary nozzle 3251, and the auxiliary nozzle 3251 is provided to face the gas injection unit 3210. That is, the first auxiliary nozzle 3251a provided in the first auxiliary injection unit 3250a faces the second gas injection unit 3210b, and the second auxiliary nozzle 3251b provided in the second auxiliary injection unit 3250b is It is provided to face the third gas injection unit (3210c). In other words, when installing each of the first and second auxiliary injection units (3250a, 3250b), the first auxiliary nozzle (3251a) faces the second gas injection unit (3210b), and the second auxiliary nozzle (3251b) ) is installed so that it faces the third gas injection unit (3210c).

When gas is injected from the first and second auxiliary injection units 3250a and 3250b, the gas flows into the vortex generator 3220 through the gap between the guide member 3230 and the gas injection unit 3210. That is, when gas is discharged from the first auxiliary injection unit 3250a, the gas flows into the gap between the first guide member 3230a and the second gas injection unit 3210b, and the second auxiliary injection unit 3250b When gas is discharged from , the gas flows into the gap between the third guide member 3230c and the fourth gas injection unit 3210d. Accordingly, the gas injected from the first and second auxiliary injection units 3250a and 3250b generates a gas flow or airflow flowing into the vortex generating unit 3220. This is because the vortex generated in the vortex generator 3220 attracts the gas discharged from the auxiliary injection unit 3250 through the gap between the guide member 3230 and the gas injection unit 3210.

When the gas in the space outside the vortex generator 3220 flows into the vortex generator 3220, the processing material outside the vortex generator 3220 moves together. Accordingly, the processing material outside the vortex generating unit 3220 can be introduced into the vortex generating unit 3220. In addition, according to this, the treated material that has escaped out of the vortex generator 3220 can be re-introduced into the vortex generator 3220.

And, an air curtain is formed by the airflow in which the gas injected from the auxiliary injection unit 3250 flows toward the gap between the gas injection unit 3210 and the guide member 3230. This air curtain can prevent the processing material from moving out of the body 3240 by preventing the processing material from moving.

FIG. 8 is a diagram showing a gas injection unit and a nozzle of an inhaler according to a first modification of the first embodiment, and FIG. 9 is a diagram showing a gas injection unit and a nozzle of an inhaler according to a second modification. Here, Figure 9 (a) is a front view of the gas injection unit and nozzle according to the second modification, and (b) is a side view. Figure 10 is a diagram showing a gas injection portion and nozzle of an inhaler according to a third modification of the first embodiment.

In the above-described first embodiment, the nozzle 3211 is installed parallel to the lower member 3240b, so that the discharged gas is parallel or 0° to the lower member 3240b. However, the present invention is not limited to this and the nozzle 3211 may be provided to be inclined upward toward the hood 3100. To describe the first gas injection unit 3210a and the first nozzle 3211a in FIG. 8 as an example, the nozzle extension line (L ₁ ) of the first nozzle 3211a may be installed to be inclined upward toward the hood 3100. there is. At this time, the first nozzle 3211a has an angle θ of 15° or less (exceeding 0°) between the nozzle extension line L ₁ and the extension line L _U extending along the upper surface of the lower member 3240b. It is installed as inclined as possible.

In FIG. 8, it has been explained that the first nozzle 3211a provided in the first gas injection unit 3210a is installed to be inclined upward, but the second to fourth nozzles provided in the second to third gas injection units 3210b to 3210d ( 3211b to 3211d) may each be provided to be inclined upward. Additionally, the inclined angle may be 15° or less (exceeding 0°).

By providing the nozzle 3211 to be inclined upward in this way, there is an effect in that the processing material can be more easily introduced or sucked into the hood 3100.

Meanwhile, if the upward inclination angle of the nozzle 3211 exceeds 15°, the vortex may be weak on the lower member 3240b. Accordingly, it may be difficult for processing material close to the lower member 3240b to be sucked into the hood.

In the above-described first embodiment, it was explained that the nozzle 3211 has a pipe shape protruding outward from the gas injection unit 3210. However, the nozzle 3211 is not limited to this and may have a slit shape. Referring to FIG. 9, the first gas injection unit 3210a may be provided with a slit that communicates with the internal passage through which the gas moves and extends in the vertical direction to be exposed to the outside, and this slit may be provided with the first nozzle ( 3211a).

At this time, the width W of the slit-shaped first nozzle 3211a is preferably set to 1 mm to 10 mm (1 mm or more, 10 mm or less). Meanwhile, when the width (W) of the slit-shaped first nozzle (3211a) is less than 1 mm, the flow rate of the discharged gas is small, so it may be difficult to form a vortex and clogging may occur. And, the reason for setting the width to 10 mm or less is because it is unnecessary to increase it beyond 10 mm in order to form a vortex.

In FIG. 9, it has been described that the first nozzle 3211a is provided in a slit shape, but the second to fourth nozzles 3211b to 3211d may also be provided in a slit shape.

In addition, in the above-described first embodiment, it has been described that the other end of the nozzle 3211 through which gas is discharged is provided to face the other end (tip) of the inner surface of the guide member 3230. That is, the first to fourth nozzles (3211a to 3211d) according to the first embodiment are provided such that their nozzle extension lines (L ₁ to L ₄ ) are connected to the inner ends of the first to fourth guide members (3230a to 3230d). It has been done.

However, it is not limited to this, and the other end of the nozzle 3211 may be provided to face the inner surface between one end and the other end of the guide member 3230. 10 as an example, the first nozzle 3211a is installed so that its other end faces the inner surface between one end and the other end of the first guide member 3230a. That is, the first nozzle 3211a may be provided so that its nozzle extension line L ₁ is connected to the inner surface between one end and the other end of the first guide member 3230a. And although not shown, in the second to fourth nozzles (3211b to 3211d), the nozzle extension lines (L ₂ to L ₄ ) are formed between the inner surface and the other end of the second to fourth guide members (3230b to 3230d). It can be arranged to be connected.

Figure 11 is a diagram for explaining a guide member of an inhaler according to a fourth modification of the first embodiment.

In the first embodiment described above, when the vertical length of the guide member 3230 is shorter than that of the gas injection unit 3210, the guide member 3230 has its vertical center located at the vertical center of the gas injection unit 3210. It is explained how it is installed. However, the guide member 3230 is not limited to this and may be installed biased toward the lower member 3240b. Taking the first guide member 3230a of FIG. 11 as an example, when the vertical length of the first guide member 3230a is shortened to 30% or more but less than 100% of the first gas injection portion 3210a , the first guide member 3230a may be installed to be biased toward the lower side where the lower member 3240b is located, as shown in FIG. 11. More specifically, the vertical length of the first guide member 3230a may be 30% or more and 70% or less of the first gas injection unit 3210a. In this case, the first guide member 3230a is connected to the lower member 3240b. ) can be installed to be biased toward the lower side where it is located. That is, the lower end of the first guide member 3230a may be installed to be connected to the upper surface of the lower member 3240b. Although not shown, the second to fourth guide members 3230b to 3230d may also be installed to be biased toward the lower side where the lower member 3240b is located.

In this way, when the vertical length of the guide member 3230 is shorter than that of the gas injection unit 3210, the guide member 3230 is installed biased toward the lower member 3240b, so that the lower member far away from the hood 3100 The vortex on the (3240b) side can be made stronger.

Figure 12 is a diagram showing the lower member of the inhaler according to the fifth modification of the first embodiment.

In the above-described first embodiment, it has been described that the lower member 3240b is provided as a single member. However, it is not limited to this, and as shown in FIG. 12, the lower member 3240b may be provided with a plurality of plates. That is, the lower member 3240b is a first lower plate 3240b-1 on which a plurality of gas injection units 3210a to 3210d are supported, as shown in FIG. 2 and third lower plates 3240b-2 and 3240b-3. At this time, the first lower plate 3240b-1 may have the same configuration as the lower member in the first embodiment described above. And the second lower plate 3240b-2 and the third lower plate 3240b-3 are aligned in the second direction, which is the alignment direction of the first open portion 3240d and the second open portion 3240e.

Accordingly, the lower member 3240b according to the fifth modification extends in the second direction as much as the second and third lower plates 3240b-2 and 3240b-3 connected to the first lower plate 3240b-1, as shown in FIG. 12. The area increases. If the area of the lower member 3240b is increased by connecting the second and third lower plates 3240b-2 and 3240b-3 to both sides of the first lower plate 3240b-1, the vortex can be generated more strongly. This is because the amount of gas discharged from the first to fourth nozzles (3211a to 3211d) escaping or leaking downward by the extended second and third lower plates (3240b-2, 3240b-3) can be reduced. . Therefore, according to the inhaler 3200 including the lower member 3240b according to the fifth modification, a vortex can be formed more strongly than the first embodiment.

In addition, the lower member 3240b according to the fifth modification can be slid or folded so that the second and third lower plates 3240b-2 and 3240b-3 are located below the first lower plate 3240b-1 when necessary. It can be prepared in a structure that can be used. Here, when necessary may mean, for example, when dust collection is not performed.

Figure 13 is a plan view of the inhaler according to the second embodiment of the present invention as seen from the top.

In the above-described first embodiment, the case where the aspect ratio is less than or greater than 1 depending on the arrangement of the plurality of gas injection units 3210 has been described. However, the present invention is not limited to this, and a plurality of gas injection units 3210 may be arranged so that the aspect ratio is 1, for example, forming a square as in the second embodiment of FIG. 8 .

When the first to fourth gas injection units 3210 (3210a to 3210d) are arranged to be square as shown in FIG. 8, each nozzle (3211: 3211a to 3211d) is positioned on the first to fourth sides (S ₁ to S _4). ) and arrange each of the plurality of gas injection units in parallel. That is, the nozzle extension line (L ₁ ) of the first nozzle (3211a) is parallel to the first side (S ₁ ), and the nozzle extension line (L ₂ ) of the second nozzle (3211b) is parallel to the second side (S ₂ ). And, the nozzle extension line (L ₃ ) of the third nozzle (3211c) is parallel to the third side (S ₃ ), and the nozzle extension line (L ₄ ) of the fourth nozzle (3211d) is parallel to the fourth side (S ₄ ). It can be arranged to do so.

In this way, when the arrangement shape of the plurality of gas injection units 3210a to 3210d is square, the gas is circular even if the nozzles 3211a to 3211d are arranged parallel to the first to fourth sides S ₁ to S ₄ It is easy to form a rotating airflow. That is, when a plurality of gas injection units 3210 are arranged so that the aspect ratio is 1, the nozzle extension lines (L ₁ to L ₄ ) of each nozzle 3211a to 3211d intersect each side (S ₁ to S ₄ ). Even if they are arranged side by side, there is no problem in forming a swirling flow.

Additionally, a guide member (3230: 3230a to 3230d) is installed in each of the plurality of gas injection units (3210: 3210a to 3210d). This guide member 3230 serves to block or shield external air from flowing into the vortex generator 3220. Accordingly, the vortex can be maintained more stably within the vortex generating unit 3220.

Hereinafter, with reference to FIGS. 1 to 5, the operation of the dust collection device according to the first embodiment of the present invention will be described. At this time, the case where the suction device is located at the rear of the rolling mill will be described as an example.

While the rolling mill 30 is operated to roll the cast steel 10, a dust collection device is operated to collect dust generated during rolling. To this end, the blower 2000 operates and gas is injected from each of the plurality of gas injection units 3210 and the plurality of auxiliary injection units 3250.

When the blower 2000 operates, suction force is generated in the duct 1000 and the hood 3100, and the fan 3300 inside the hood 3100 rotates. Accordingly, suction force by the blower 2000 and suction force by the fan 3300 are generated.

The gas injected from each nozzle 3211 of the plurality of gas injection units 3210 flows while moving along one side of the guide member 3230. Accordingly, the gas injected from each nozzle 3211 rotates in a circular or oval shape. In other words, a rotating airflow or swirling flow is formed by the gas.

And, since the fan 3300 located above the plurality of gas injection units 3210 is rotating, suction force is generated by the rotation of the fan 3300. Accordingly, suction force by the blower 2000 and suction force by rotation of the fan 3300 are generated in the hood 3100. And the suction force of the hood 3100 acts on the space below it, that is, the vortex generator 3220. Accordingly, the rotating airflow formed in the vortex generator 3220 is pulled toward the hood 3100 by the suction force of the hood 3100, and thus a vortex such as a tornado or vortex is formed. That is, a vortex is formed in the vortex generating unit 3220 located below the hood 3100. And, suction force is generated by the vortex.

At this time, the treated material flows into the body 3240 and the vortex generator 3220 due to the suction force generated in the hood 3100 by the operation of the blower 2000 and the fan 3300 and the suction force caused by the centrifugal force of the vortex. . That is, the processing material is sucked or introduced into the vortex generator 3220 through the first and second openings 3240e of the body 3240 and a plurality of holes h provided in the lower member 3240b. The processed material flowing into the vortex generator 3220 flows into the hood 3100. The processed material flowing into the hood 3100 passes through the inside of the duct 1000 and is then collected into the dust collection unit 4000. And, only the gas from which the processing material has been removed is discharged to the outside of the duct 1000.

At this time, because a vortex is formed on the lower side of the hood 3100, the area where the suction force acts becomes wider compared to when there is no vortex. Accordingly, the suction force caused by the hood 3100 and the vortex is applied not only to the space immediately below the hood 3100 but also to the outer space in the width and length directions of the hood 3100. Accordingly, not only the area directly below the hood 3100 but also the treated material outside the hood 3100 in the width and length directions can be collected, thereby improving dust collection efficiency.

In addition, the guide member 3230 installed in each of the plurality of gas injection units 3210 facilitates the formation of rotating air currents and vortices, and it is possible to form vortices with strong centrifugal force. In addition, the guide member 3230 can block external air from flowing into the vortex generating unit. Accordingly, the treated material can be easily sucked into the hood 3100 using suction force based on centrifugal force caused by the vortex, and this improves dust collection efficiency.

Additionally, the processing material outside the vortex generator 3220 can be introduced into the vortex generator 3220 by the gas flow injected from the auxiliary injection portion 3250. In addition, an air curtain is formed by the gas injected from the auxiliary injection unit 3250, and this air curtain can block the processing material from escaping to the outside of the body 3240 by preventing the movement of the processing material. In this way, the amount of treated matter sucked into the vortex generating unit by the airflow generated by the auxiliary injection unit 3250 can be increased, and the escape of treated matter can be suppressed, thereby improving the dust collection efficiency of treated matter. In the above-described first and second embodiments, a case in which the inhaler is provided with four gas injection units was described. However, the number of gas injection units is not limited to the above-described example and may be provided as less than 4 or more than 4. That is, the number of gas injection units may be less than 4, such as 1 to 3, or the number of gas injection units may be more than 4, such as 5 or 6. In addition, in the first and second embodiments, the case where the plurality of gas injection units are arranged in a rectangular shape has been described. However, it is not limited to this, and the plurality of gas injection units may be arranged in various forms.

1000: Duct 3000: Suction device
3100: hood 3210: gas injection unit
3220: Vortex generating unit 3230: Guide member
3240: Body 3250: Auxiliary injection unit

Claims (20)

A plurality of gas injection units capable of spraying gas; and
A guide member connected to the gas injection unit is directed to the vortex generator, which is a space surrounded by the gas injection unit and is a space in which a vortex is generated.
The positions of two adjacent guide members overlap in some areas,
The end of one of the two guide members arranged to overlap in some areas protrudes outside the overlapping area,
The arrangement form in which the plurality of gas injection units are arranged is a polygon in which the separation distance between adjacent gas injection units is partially different,
A vortex forming device in which the extension length of the guide member located between two gas injection units with a relatively short separation distance is longer than that of the guide member located between two gas injection units with a relatively long separation distance. In claim 1,
Each of the gas injection unit and the guide member has a shape extending in the vertical direction,
The vertical extension length of the guide member is shorter than the vertical extension length of the gas injection unit, and the vertical center of the guide member is located at the vertical center of the gas injection unit. In claim 1,
The gas injection unit is provided with a nozzle for spraying gas,
The guide member has one end connected to the gas injection unit to cover the nozzle. In claim 3,
The nozzle is shaped like a tube protruding outward from the gas injection unit,
The nozzle is a vortex forming device provided to face the inner surface of the guide member. In claim 3,
The nozzle is in communication with the internal passage of the gas injection unit through which the gas moves and is provided in the shape of a slit extending in the vertical direction to be exposed to the outside. In claim 1,
The guide member is a vortex forming device including an inner surface of a concave curved surface. In claim 6,
a fan installed to rotate above the gas injection unit; Including,
The guide member is a vortex forming device provided in a shape such that a second circle formed along the inner surface can circumscribe a first circle formed by rotation of the fan. delete delete delete The vortex forming device according to any one of claims 1 to 7;
A dust collecting device comprising: a body having an internal space in which the gas injection unit and the guide member are accommodated, and having a first opening provided on one side and a second opening provided on the other side. In claim 11,
A plurality of holes are provided in the lower member forming the lower part of the body,
Among the plurality of holes, the inner diameter of the hole provided in the area facing the vortex generating unit is smaller than the inner diameter of the hole provided in the area facing the outside of the vortex generating unit. In claim 11,
A dust collection device installed outside the gas injection unit and including an auxiliary injection unit that sprays gas. In claim 11,
A hood located above the vortex forming device; and
A dust collecting device comprising a duct connected to the hood. Injecting gas using a plurality of gas injection units;
forming a rotating airflow by allowing the injected gas to flow along a guide member connected to the gas injector; and
Including the step of generating a vortex by sucking the rotating air current,
In the step of spraying gas using the gas injection unit,
The positions of two adjacent guide members overlap in some areas, and the end of one guide member of the two guide members arranged in overlapping partial areas is positioned to protrude outside the overlapping area for spraying,
A plurality of the gas injection units are injected so that the spacing between adjacent gas injection units has different polygons,
A vortex forming method in which the extension length of the guide member located between two gas injection units with a relatively short separation distance is provided to be longer than the guide member located between two gas injection units with a relatively long separation distance and then sprayed. In claim 15,
The step of forming the rotating airflow includes allowing the injected gas to flow along the concave curved inner surface of one guide member, and transferring the gas flowing along the inner surface of the one guide member to the inner surface of a neighboring guide member; ,
The step of generating the vortex includes the step of sucking a rotating airflow in an upward direction. In claim 15,
A vortex forming method comprising blocking external air from flowing into the area where the vortex is generated using the guide member. Injecting gas using a plurality of gas injection units;
forming a rotating airflow by moving the injected gas using a guide member connected to the gas injection unit;
generating a vortex by sucking the rotating airflow; and
Including: suctioning the treated material into a duct using the vortex,
In the step of spraying gas using the gas injection unit,
The positions of two adjacent guide members overlap in some areas, and the end of one guide member of the two guide members arranged in overlapping partial areas is positioned to protrude outside the overlapping area for spraying,
A plurality of the gas injection units are injected so that the spacing between adjacent gas injection units has different polygons,
A dust collection method in which the extension length of the guide member located between two gas injection units with a relatively short separation distance is made longer than the guide member located between two gas injection units with a relatively long separation distance. In claim 18,
The step of forming the rotating airflow includes allowing the injected gas to flow along the concave curved inner surface of one guide member, and transferring the gas flowing along the inner surface of the one guide member to the inner surface of a neighboring guide member; ,
The step of generating the vortex includes rotating a fan above the gas injection unit to suck in the rotating air current, thereby generating the vortex. In claim 19,
The step of sucking the processed material into the duct includes the step of sucking the processed material into the duct using a suction force generated by rotation of the fan and a suction force generated by the centrifugal force of the vortex.

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