CN119487343A

CN119487343A - Exhaust

Info

Publication number: CN119487343A
Application number: CN202380049847.6A
Authority: CN
Inventors: 金知河
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-25
Filing date: 2023-04-25
Publication date: 2025-02-18
Also published as: WO2023211114A1; KR20230151392A; JP2025514323A; EP4517201A1; US20250290659A1; KR102659687B1

Abstract

An exhaust apparatus for sucking in polluted air and discharging it to the outside is disclosed. The disclosed exhaust apparatus includes a housing having an air inlet and a plurality of exhaust ports, a guide installed inside the housing for guiding air flowing into the housing through the air inlet, and an exhaust member directly or indirectly connected to the plurality of exhaust ports. The plurality of exhaust ports include a first exhaust port provided at a position corresponding to a center of the intake port, and a plurality of second exhaust ports spaced apart from the first exhaust port and provided on a rear wall of the housing in a dispersed manner. The guide includes a plurality of guide plates disposed between the front wall and the rear wall of the housing. The guide plates are concentrically arranged with the air inlet around the central axis of the air inlet, and each guide plate is annular or circular arc-shaped. The inside radius of the plurality of guide plates is smaller than the inside radius of the intake port and larger than the inside radius of the first exhaust port, and gradually becomes smaller from the intake port to the first exhaust port.

Description

Exhaust device

Technical Field

The present invention relates to an exhaust apparatus that sucks in polluted air and discharges it to the outside, and more particularly, to an exhaust apparatus that can improve exhaust efficiency.

Background

An exhaust device for sucking air containing such pollutants (hereinafter referred to as polluted air) and exhausting it to the outside is generally installed in a kitchen of a factory, a home or a restaurant where pollutants such as bad smell, harmful gas, smoke, dust, etc. are generated.

In the existing exhaust apparatus for this purpose, as the distance between the pollution source and the exhaust apparatus increases, the exhaust efficiency of sucking and discharging the polluted air rapidly decreases, and even if the pollution source is located in an open space, the exhaust efficiency of the exhaust apparatus decreases.

Therefore, it is preferable that the exhaust device is installed as close to the pollution source as possible and the pollution source is separated from the surrounding space in order to improve the exhaust efficiency.

However, in many cases, it is difficult to install the exhaust apparatus near the pollution source or to isolate the pollution source from the surrounding space, and in these cases, there is a problem that satisfactory exhaust efficiency cannot be obtained from the existing exhaust apparatus.

Heretofore, in order to solve this problem, an exhaust fan having a larger capacity than necessary has been employed to increase the intake amount of polluted air, but in this case, not only has economic feasibility been reduced due to an increase in noise and excessive installation and operation costs, but also there has been a disadvantage that satisfactory exhaust efficiency has not yet been achieved.

Recently, these existing partial exhaust devices are often equipped with a swirler that is installed near the exhaust pipe intake and is used to generate a swirl flow. The airflow generated by the rotation of the cyclone forms a vortex around the exhaust flow of polluted air rising from the pollution source along the rotation center axis of the cyclone towards the air inlet of the exhaust pipe. The vortex thus formed acts as an air curtain, blocking the source of pollution in the surrounding space, and allowing the polluted air to be sucked into the exhaust pipe more effectively.

Also, korean registered patent No. 10-1606862 discloses an exhaust apparatus including a cyclone for forming a vortex, and a guide for expanding an air curtain formed by the vortex in a vertical direction. The exhaust apparatus has an advantage in that polluted air farther from the polluted air inlet can be more easily and efficiently sucked and discharged to the outside, so that exhaust efficiency is improved.

However, the exhaust apparatus has a disadvantage in that a cyclone having a plurality of blades for forming a vortex, a separate motor for rotating the cyclone, and a guide having a slightly complicated structure for guiding the vortex should be provided, which increases the weight and complexity of the structure, making the preparation expensive. In addition, the exhaust apparatus has a disadvantage in that it is difficult to install in a kitchen of a home or restaurant due to its complicated structure and difficulty in miniaturization.

Disclosure of Invention

Technical problem

In order to solve the above-described conventional problems, an object of the present invention is to provide an exhaust apparatus that can improve exhaust efficiency while having a relatively simple structure.

Technical proposal

In order to solve the above technical problems, an exhaust apparatus according to an embodiment of the present invention includes:

A housing including a front wall formed with an air inlet and a rear wall opposite to the front wall and formed with a plurality of air outlets;

A guide installed inside the housing for guiding air flowing into the housing through the air inlet, and

An exhaust member directly or indirectly connected to the plurality of exhaust ports and exhausting air flowing into the inside of the housing to the outside of the housing through the plurality of exhaust ports,

The plurality of exhaust ports includes a first exhaust port provided at a position corresponding to a center of the intake port, and a plurality of second exhaust ports spaced apart from the first exhaust port and provided on a rear wall of the housing in a dispersed manner,

The guide includes a plurality of guide plates spaced apart from each other in a central axis direction of the air intake port between a front wall and a rear wall of the housing, and disposed in parallel with the front wall,

The guide plates are concentrically arranged around the central axis of the air inlet and each guide plate is annular or circular arc-shaped,

The inside radius of the plurality of guide plates is smaller than the inside radius of the intake port and larger than the inside radius of the first exhaust port, and gradually becomes smaller from the intake port to the first exhaust port.

According to an embodiment of the present invention, an outer radius of the plurality of guide plates may be gradually smaller from the intake port to the first exhaust port, and an outer radius of a guide plate closest to the front wall of the housing among the plurality of guide plates may be larger than an inner radius of the intake port.

According to an embodiment of the present invention, the plurality of guide plates may be fixed to a side wall or a rear wall of the housing to be fixedly disposed inside the housing.

According to an embodiment of the present invention, the plurality of guide plates may have lugs for fixing, respectively, and may be fixed to a side wall or a rear wall of the housing by the lugs.

According to an embodiment of the present invention, the housing may have a rectangular parallelepiped shape or a cylindrical shape.

According to an embodiment of the present invention, the exhaust apparatus may further include an exhaust box coupled to the rear of the housing and surrounding the plurality of exhaust ports together, at least one common exhaust port may be formed on a rear wall of the exhaust box for exhausting air flowing into the inside of the exhaust box through the plurality of exhaust ports to the outside, and at least one exhaust pipe may be connected to the at least one common exhaust port as the exhaust member.

According to another embodiment of the present invention, the exhaust apparatus may further include an exhaust box coupled to the rear of the housing and surrounding the plurality of exhaust ports together, the exhaust box may have a height lower than that of the housing such that at least one common exhaust port for exhausting air flowing into the inside of the exhaust box through the plurality of exhaust ports to the outside is formed on a side wall of the exhaust box forming a step with a corresponding side wall of the housing, the at least one common exhaust port may be provided with at least one exhaust fan as the exhaust member,

At least one additional exhaust port for exhausting a portion of air flowing into the inside of the case to the outside of the case may be formed on a side wall of the case corresponding to the side wall of the exhaust box in which the common exhaust port is formed, and the at least one additional exhaust port may be provided with at least one exhaust fan.

According to still another embodiment of the present invention, the exhaust apparatus may further include an exhaust box coupled to the rear of the housing and surrounding the plurality of exhaust ports together, the exhaust box having the same height as the housing, at least one integrated exhaust port crossing the housing and the exhaust box may be formed on one of side walls of the exhaust box and the side wall of the housing corresponding thereto, the at least one integrated exhaust port being provided with at least one exhaust fan, and air flowing into the housing and the exhaust box may be exhausted outside the housing and the exhaust box through the at least one integrated exhaust port.

According to an embodiment of the present invention, the air inlet may have a circular shape, and the plurality of guide plates may have an annular shape having a radial width.

According to an embodiment of the present invention, the plurality of guide plates may be divided into a plurality of arc pieces, respectively, and the plurality of arc pieces of each of the plurality of guide plates may be arranged together to form a ring shape inside the housing.

According to another embodiment of the present invention, the air inlet may have a substantially semicircular shape, and the plurality of guide plates may have a circular arc shape having a radial width.

According to another embodiment of the present invention, the exhaust apparatus may further include an auxiliary guide plate extending from a position on the rear wall of the housing near the first exhaust port edge toward the front wall of the housing in a direction parallel to the central axis.

According to another embodiment of the present invention, the auxiliary guide plate may have a width that is larger than a diameter of the first exhaust port, but does not interfere with a guide plate closest to the rear wall of the housing among the plurality of guide plates.

According to still another embodiment of the present invention, the exhaust apparatus may further include a plurality of side guide plates extending perpendicularly from both side edges of the auxiliary guide plate to the bottom of the case.

According to still another embodiment of the present invention, the auxiliary guide plate is spaced apart from the front wall of the housing by a predetermined distance, at least one front guide plate is provided in a gap between the front end of the auxiliary guide plate and the front wall of the housing, the at least one front guide plate is spaced apart from the front end of the auxiliary guide plate and the front wall of the housing, has a width in a direction perpendicular to the bottom of the housing, is disposed between the side guide plates parallel to the front wall of the housing, and both ends of the front guide plate in a length direction may be fixed to the side guide plates.

According to still another embodiment of the present invention, the at least one front guide plate may include a plurality of front guide plates disposed in parallel and spaced apart, the plurality of front guide plates being disposed higher as they are farther from the front wall of the housing.

According to still another embodiment of the present invention, the exhaust apparatus may further include a plurality of side guide plates extending vertically upward from both side edges of the auxiliary guide plate.

According to a further embodiment of the invention, the auxiliary guide plate is spaced a predetermined distance from the front wall of the housing, the front end of the auxiliary guide plate being provided with a front guide plate extending vertically upwards from the front end of the auxiliary guide plate, which may be parallel to and spaced apart from the front wall of the housing.

According to a further embodiment of the invention, the side guide plates extend from the rear wall of the housing to the front wall of the housing, the front guide plates may be arranged between the side guide plates.

Advantageous effects

The exhaust device according to the embodiment of the invention has the advantage that the polluted air far from the exhaust device can be effectively sucked and discharged to the outside without a cyclone for forming vortex, thereby improving the exhaust efficiency.

In addition, the exhaust apparatus of the present invention has an advantage in that since the cyclone is not used, a separate motor is not required to drive the cyclone, thereby simplifying the structure thereof, which reduces not only the manufacturing cost but also the power consumption required to operate the exhaust apparatus.

In addition, the exhaust apparatus of the present invention is advantageous in that miniaturization can be achieved due to the simple structure, small size, and light weight.

Drawings

Fig. 1 is an explanatory diagram of the basic structure and operation of an exhaust apparatus according to a first embodiment of the present invention.

Fig. 2 is an external perspective view of the exhaust device shown in fig. 1, showing an example in which the central axis is horizontally arranged.

Fig. 3 is a vertical sectional view of the exhaust apparatus shown in fig. 2 in the direction of the central axis.

Fig. 4 is a perspective view of the guide plate shown in fig. 1 to 3 separated from the housing.

Fig. 5 is a perspective view of a modification of the case shown in fig. 2.

Fig. 6 is a perspective view of a modification of the guide plate shown in fig. 5.

Fig. 7 is an external perspective view of an exhaust apparatus according to a second embodiment of the present invention, showing an example in which a central axis is horizontally arranged.

Fig. 8 is a vertical sectional view of the exhaust apparatus shown in fig. 7 in the direction of the central axis.

Fig. 9 is a perspective view of the guide plate shown in fig. 7 to 8 separated from the housing.

Fig. 10 is a partial perspective view of a modification of the portion provided with the auxiliary guide plate shown in fig. 7 and 8.

Fig. 11 is a vertical sectional view of the portion shown in fig. 10.

Fig. 12 is a partial perspective view of another modification of the portion provided with the auxiliary guide plate shown in fig. 7 and 8.

Fig. 13 is an external perspective view of an exhaust apparatus according to a third embodiment of the present invention, showing an example in which a central axis is horizontally arranged.

Fig. 14 is a rear perspective view of the exhaust device shown in fig. 13.

Fig. 15 is a vertical sectional view of the exhaust apparatus shown in fig. 13 in the central axis direction.

Fig. 16 is a schematic view showing an example of using the exhaust device shown in fig. 13 as a flow fence forming device.

Fig. 17 is a perspective view of a modification of the exhaust device shown in fig. 13.

Detailed Description

Hereinafter, an exhaust apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the following drawings, like reference numerals refer to like components.

Fig. 1 is an explanatory view showing a basic structure and operation of an exhaust apparatus according to a first embodiment of the present invention, fig. 2 is an external perspective view of the exhaust apparatus shown in fig. 1, showing an example of a horizontal arrangement of a central axis, fig. 3 is a vertical sectional view in a central axis direction of the exhaust apparatus shown in fig. 1 to 3, and fig. 4 is a perspective view of a guide plate shown in fig. 3 separated from a housing.

Referring to fig. 1 to 4, an exhaust apparatus 100 according to a first embodiment of the present invention includes a housing 110 including an air inlet 116 and a plurality of air outlets 118 and 119, a guide 120 installed inside the housing 110 to guide air flowing into the housing 110 through the air inlet 116, and an exhaust duct 131 as an exhaust member directly or indirectly connected to the plurality of air outlets 118 and 119 and exhausting the air flowing into the housing 110 to the outside of the housing 110 through the plurality of air outlets 118 and 119.

As shown in fig. 2, the housing 110 preferably has a rectangular parallelepiped shape, but is not limited thereto, and may have any other suitable shape, such as a polygonal shape or a cylindrical shape (see fig. 5).

The case 110 includes a front wall 111 at one side of the air inflow case 110, a rear wall 112 facing the front wall 111 at a predetermined distance, and a side wall 114 connecting the front wall 111 and the rear wall 112 between the front wall 111 and the rear wall 112. An air inlet 116 through which air flows into the interior of the housing 110 is formed in the front wall 111 of the housing 110, and a plurality of air outlets 118 and 119 through which air is discharged from the housing 110 are formed in the rear wall 112.

The air inlet 116 may preferably have a circular shape. The plurality of air vents 118 and 119 preferably have a circular shape, but are not limited thereto, and may have other suitable shapes, such as polygonal, elliptical, or semicircular, depending on the positions where the air vents 118 and 119 are provided.

The plurality of exhaust ports 118 and 119 may include a first exhaust port 118 and a plurality of second exhaust ports 119. The first exhaust port 118 is provided at a position corresponding to the center of the intake port 116. Preferably, the center of the first exhaust port 118 may coincide with the center of the intake port 116, and the center axis C passing through the centers of the first exhaust port 118 and the intake port 116 is not only the center axis of the housing 110 but also the entire airflow axis. The plurality of second exhaust ports 119 may be spaced apart from the first exhaust port 118 and suitably disposed in a dispersed manner on the rear wall 112 of the housing 110.

As shown in fig. 1, in the exhaust apparatus 100 according to the present invention, the central axis C may be vertical. In addition, as shown in fig. 2 and 3, in the exhaust apparatus 100 according to the present invention, the central axis C may also be horizontal. On the other hand, although not shown, in the exhaust apparatus 100 according to the present invention, the central axis C may be inclined at a predetermined angle. As such, the exhaust device 100 according to the present invention may be disposed in various directions as long as it is determined that the contaminated air can be most effectively inhaled according to the generation position of the contaminated air and the installation position of the exhaust device 100. In the drawings, the exhaust apparatus 100 according to the present invention is disposed in a direction in which the structure thereof is more clearly shown.

The plurality of exhaust ports 118 and 119 may be directly connected to respective exhaust pipes (not shown), but are not limited thereto. The plurality of exhaust ports 118 and 119 may be indirectly connected together to one exhaust pipe 131. In addition, the plurality of exhaust pipes 118 and 119 may be indirectly connected to more than one exhaust pipe, such as two or three exhaust pipes (not shown).

To this end, the exhaust apparatus 100 according to the present invention may further include an exhaust box 150 coupled to the rear of the housing 110 and surrounding the plurality of exhaust ports 118 and 119 together. The shape of the vent box 150 may be the same as the shape of the housing 110, such as a rectangular parallelepiped shape, but the size of the vent box 150 may be smaller than the size of the housing. For example, the width WB of the vent box in the direction of the central axis C may be smaller than the width WH of the housing.

The front wall of the exhaust box 150 is the rear wall 112 of the housing 110. That is, the rear wall 112 of the housing 110 is shared between the housing 110 and the exhaust box 150. A common exhaust port 158 is formed at a substantially center of the rear wall 152 of the exhaust box 150, and the common exhaust port 158 is connected to the exhaust pipe 131. Accordingly, the air discharged from the housing 110 through the plurality of exhaust ports 118 and 119 may be merged in the exhaust box 150 and discharged through the common exhaust port 158 and the exhaust pipe 131. On the other hand, although not shown, more than one common exhaust port, for example, two or three common exhaust ports, may be formed on the rear wall 158 of the exhaust box 150, and an exhaust pipe may be connected to each of these common exhaust ports. The plurality of exhaust ports 118 and 119 includes about 6 to 9 exhaust ports 118 and 119 to achieve uniform exhaust from the housing, but only a much smaller number of common exhaust ports 158, such as one to three common exhaust ports 158, are formed in the exhaust box 150 than the exhaust ports 118, 119, so that the number of exhaust pipes 131 used is also much smaller than the number of exhaust ports 118, 119. Thus, it is preferable that the complexity due to the plurality of exhaust pipes can be eliminated.

In the exhaust duct 131, for example, a sirocco fan (sirocco fan) (not shown) is provided as is well known. The sirocco fan functions to form a negative pressure (negative pressure) in the housing 110 (and the discharge casing 150), force air outside the housing 110 to be sucked into the housing 110, and discharge the sucked air to the outside through the discharge duct 131. The sirocco fan may be installed at an exhaust end of the exhaust duct 131. In this way, by the sirocco fan installed in the exhaust duct 131, an air flow is formed which flows from the outside of the casing 110 through the air inlet 116 of the front wall 111 of the casing 110, the inside of the casing 110, the exhaust ports 118 and 119 of the rear wall 112 of the casing 110, the inside of the exhaust box 150, the common exhaust port 158 of the rear wall 152 of the exhaust box 150, and the exhaust duct 131 to the outside.

The guide 120 may include a plurality of guide plates 121, 122 and 123 installed inside the housing 110, and configured to effectively guide air flowing into the housing 110 through the air inlet 118.

Three guide plates 121, 122 and 123 are shown in the drawings, but not limited thereto, and two, four or more guide plates may be provided inside the housing 110 according to the desired exhaust capacity of the exhaust apparatus 100 and/or the size of the housing 110.

The plurality of guide plates 121, 122, and 123 are disposed between the front wall 111 and the rear wall 112 of the housing 110. The plurality of guide plates 121, 122, and 123 may include a first guide plate 121, a second guide plate 122, and a third guide plate 123, adjacent guide plates being spaced apart from each other by a predetermined distance in a central axis C direction from the front wall 111 to the rear wall 112, the first guide plate 121 being spaced apart from the front wall 111, and the third guide plate 123 being spaced apart from the rear wall 112.

Specifically, as shown in fig. 3, the first guide plate 121 is disposed parallel to the front wall 111 and is spaced from the front wall 111 by a predetermined first gap G1 in the direction of the central axis C. The second guide plate 122 is disposed in parallel with the first guide plate 121 and is spaced apart from the first guide plate 121 by a predetermined second gap G2. The third guide plate 123 is disposed in parallel with the second guide plate 122 and is spaced apart from the second guide plate 122 by a predetermined third gap G3. In addition, the third guide plate 123 is disposed in parallel with the rear wall 112 and is spaced apart from the rear wall 112 by a predetermined fourth gap G4. As such, the front wall 111, the three guide plates 121, 122 and 123, and the rear wall 112 are disposed in parallel with each other at a predetermined distance. At this time, in order to optimize the air flows guided by the guide plates 121, 122, and 123, the gaps G1, G2, G3, and G4 may all be the same or different from each other. For example, the gaps G1, G2, G3, and G4 may gradually increase or decrease toward the rear wall 112, and the value showing the optimum air flow may be determined through a plurality of experiments. In addition, the gaps G1, G2, G3, and G4 may be appropriately determined according to the exhaust capacity required for the exhaust device 100 and/or the size of the housing 110.

As shown in fig. 4, the first, second and third guide plates 121, 122 and 123 are each in the shape of a ring having predetermined widths W1, W2 and W3, respectively, in a radial direction around the central axis C. The widths W1, W2, and W3 may all be the same, but are not limited thereto. The ring-shaped guide plates 121, 122 and 123 are fixed to the side walls 114 of the housing 110, respectively, so as to be fixedly disposed inside the housing 110. For this, the ring-shaped guide plates 121, 122 and 123 may have a lug (lug) 125 for fixing at each outer side edge, and may be fixed to the side wall 114 of the housing 110 by the lugs 125. The lugs 125 may have any suitable shape and size other than that shown in fig. 4. In addition, the lugs 125 may be secured to the side walls 114 of the housing 110 by suitable fastening means, such as screws or adhesive.

The annular guide plates 121, 122 and 123 are disposed concentrically with the air inlet 116 and the first air outlet 118. However, the guide plates 121, 122 and 123, the air inlet 116 and the first air outlet 118 each have different radii.

Specifically, as shown in fig. 3 and 4, the inner radius Ri1 of the first guide plate 121 is smaller than the inner radius Ra of the air inlet 116, and the outer radius Ro1 of the first guide plate 121 is larger than the inner radius Ra of the air inlet 116. In addition, the inner radius Ri2 of the second guide plate 122 is smaller than the inner radius Ri1 of the first guide plate 131, and the outer radius Ro2 of the second guide plate 122 is larger than the inner radius Ri1 of the first guide plate 121 but smaller than the outer radius Ro1 of the first guide plate 121. The inner radius Ri3 of the third guide plate 123 is smaller than the inner radius Ri2 of the second guide plate 122, and the outer radius Ro3 of the third guide plate 123 is larger than the inner radius Ri2 of the second guide plate 122 but smaller than the outer radius Ro2 of the second guide plate 122. In addition, the inner radius Ri3 of the third guide plate 123 is larger than the inner radius Rb of the first exhaust port 118. In this way, the inside radii of the intake port 116, the first guide plate 121, the second guide plate 122, the third guide plate 123, and the first exhaust port 118 become smaller from the intake port 116 to the first exhaust port 118, and the airflow passage formed therein becomes smaller accordingly. The inside radius and the outside radius of the air inlet 116, the guide plates 121, 122, and 123, and the first air outlet 118 may be set to values showing optimal performance through a plurality of experiments according to the desired air discharge capacity of the air discharge device 100 and/or the size of the housing 110.

Next, the operation of the exhaust device 100 according to the first embodiment of the present invention having the above-described structure will be described.

Referring to fig. 1, when the sirocco fan provided in the exhaust duct 131 starts to operate, a negative pressure is formed inside the casing 110, so that air outside the casing 110 flows into the inside of the casing 110 through the air inlet 116. The air flowing into the inside of the housing 110 includes outside air (including clean air and contaminated air) around the periphery of the housing 110, and outside air (mostly contaminated air) in the direction of the central axis C of the housing 110. The air flowing into the inside of the case 110 from the periphery of the case 110 forms an outside air flow Fo passing through the gap G1 between the front wall 111 and the first guide plate 121, the gap G2 between the first guide plate 121 and the second guide plate 122, the gap G3 between the second guide plate 122 and the third guide plate 123, and the gap G4 between the third guide plate 123 and the rear wall 112. With the arrangement of the guide plates 121, 122, and 123 having the above-described structure, as shown in fig. 1, the outside air stream Fo thus formed has a shape that gradually narrows as moving toward the first air outlet 118, so that an air guide passage having a shape that gradually narrows toward the first air outlet 118 is formed inside the outside air stream Fo.

The outside air (i.e., mostly polluted air) in the direction of the central axis C of the housing 110 flows into the interior of the housing 110 toward the first exhaust port 118 to form an inside air flow Fi. This inner air flow Fi is guided to the first exhaust port 118 through a tapered air guiding passage formed inside the outer air flow Fo.

The inner air flow Fi flows into the exhaust box 150 through the first exhaust port 118, and the outer air flow Fo flows into the exhaust box 150 through the plurality of exhaust ports 119. The inner air flow Fi and the outer air flow Fo are merged in the exhaust box 150 and then exhausted through the common exhaust port 158 and the exhaust pipe 131.

As described above, in the exhaust apparatus 100 according to the present invention, the outside air flow Fo gradually narrowing toward the first exhaust port 118 due to the plurality of guide plates 121, 122, and 123 surrounds the inside air flow Fi, suppresses the outside air flow Fi from spreading outward and smoothly guides the inside air flow Fi to the first exhaust port 118. In addition, the passage through which the inside air flow Fi passes (i.e., the air guide passage formed inside the outside air flow Fo) is narrowed by the outside air flow Fo, so that the speed of the inside air flow Fi increases and the negative pressure increases, and even the contaminated air far from the exhaust device 100 can be effectively captured.

As described above, the exhaust apparatus 100 does not have an existing cyclone for forming a vortex, but can efficiently suck and discharge polluted air far from the exhaust apparatus 100 to the outside only by the multi-blade fan installed at the exhaust pipe, so that the exhaust efficiency can be improved. In addition, since the exhaust apparatus 100 of the present invention does not use the existing cyclone, a separate motor is not required to drive the cyclone, thereby simplifying the structure thereof, which not only reduces the manufacturing cost of the exhaust apparatus 100, but also reduces the power consumption required to operate the exhaust apparatus 100. Further, since the exhaust apparatus 100 has a simple structure, a small size, and a light weight, miniaturization can be achieved.

Fig. 5 is a perspective view of a modification of the case shown in fig. 2.

Since the modification shown in fig. 5 is substantially the same as the first embodiment shown in fig. 1 to 4 except for the shapes of the housing and the exhaust box, only the differences therebetween will be described below.

Referring to fig. 5, as described above, the housing 110' may have a cylindrical shape. The housing 110' includes a front wall 111' having an inlet port 116', a rear wall 112' having a plurality of outlet ports 118' and 119', and a side wall 114' connecting the front wall 111' and the rear wall 112' between the front wall 111' and the rear wall 112'.

The air inlet 116' may preferably have a circular shape. The plurality of exhaust ports 118 'and 119' may include a first exhaust port 118 'and a plurality of second exhaust ports 119'. The first exhaust ports 118' are disposed at positions corresponding to the centers of the intake ports 116', and the plurality of second exhaust ports 119' may be suitably disposed at a dispersed manner on the rear wall 112' of the housing 110 '.

An exhaust box 150 'surrounding a plurality of exhaust ports 118' and 119 'together may be coupled to the rear of the housing 110'. The shape of the vent box 150' may be the same as the shape of the housing 110', such as a cylindrical shape, but the size of the vent box 150' may be smaller than the size of the housing. For example, the width of the exhaust box in the direction of the central axis C may be smaller than the width of the housing. At least one common exhaust port 158' is formed at a substantially center of the rear wall 152' of the exhaust box 150', and the common exhaust port 158' is connected to the exhaust pipe 131 '.

In the modification shown in fig. 5, the guide 120 includes two annular guide plates 121 and 122, but is not limited thereto, and three or more guide plates may be installed inside the housing 110'. The arrangement of the guide plates 121 and 122, the gaps between them, and their inside and outside radii are substantially the same as those of the guide plates 121, 122 and 123 shown in fig. 1 to 4, and thus will not be described again.

Referring to fig. 6, the guide plates 121 'and 122' each have an overall annular shape, but each guide plate may be divided into a plurality of parts. Specifically, the first guide plate 121 'is composed of three partial ring-shaped members, i.e., three arc-shaped members 121a', 121b ', and 121 c'. That is, the first guide plate 121' is divided into three arc-shaped pieces 121a ', 121b ', and 121c ', and the three arc-shaped pieces 121a ', 121b ', and 121c ' are formed together in a ring shape inside the housing 110', thereby forming the first guide plate 121' in a ring shape as a whole. Each of the three arc-shaped pieces 121a ', 121b ', and 121c ' may have a center angle of about 120 °. Likewise, the second guide plate 122 'is also composed of three arc-shaped pieces 122a', 122b ', and 122 c'.

Above, the guide plates 121 'and 122' are shown and described as each consisting of three arc-shaped pieces, but are not limited thereto. For example, the guide plates 121 'and 122' may each be composed of two arc-shaped pieces, in which case both arc-shaped pieces have a center angle of about 180 °. In addition, the guide plates 121 'and 122' may each be composed of four arc-shaped pieces, in which case the four arc-shaped pieces each have a center angle of about 90 °.

The arc pieces 121a ', 121b ', and 121c ' of the first guide plate 121' may be fixed to the rear wall 112' of the cylindrical housing 110' shown in fig. 5 by lugs 125' formed at both ends thereof, respectively. On the other hand, the arc-shaped pieces 121a ', 121b ', and 121c ' may also be fixed to the side wall 114' of the housing 110' shown in fig. 5 by lugs 125 shown in fig. 4. The lugs 125' and lugs (125 in fig. 4) may be used together so that the arcuate members 121a ', 121b ' and 121c ' are secured to the rear wall 112' and side walls 114' of the housing 110' shown in fig. 5 to improve the mounting stability thereof. Likewise, the arcuate parts 122a ', 122b' and 122c 'of the second guide plate 122' may also be fixedly disposed inside the housing 110 'shown in fig. 5 by the lugs 125' and/or lugs (125 in fig. 44).

The arc pieces 121a ', 121b', and 121c 'of the first guide plate 121' may be spaced apart in the circumferential direction by a predetermined gap G21. Also, the arc pieces 122a ', 122b', and 122c 'of the second guide plate 122' may be spaced apart in the circumferential direction by a predetermined gap G22.

On the other hand, the guide plates 121 'and 122' shown in fig. 6 have been described as being installed inside the cylindrical housing 110 shown in fig. 5, but are not limited thereto. For example, the guide plates 121, 122, and 123 installed inside the rectangular parallelepiped-shaped housing 110 shown in fig. 2 may also be composed of a plurality of arc-shaped pieces.

Fig. 7 is an external perspective view of an exhaust apparatus according to a second embodiment of the present invention, showing an example of a horizontal arrangement of a central axis, fig. 8 is a vertical sectional view of the exhaust apparatus shown in fig. 7 in a central axis direction, and fig. 9 is a perspective view of a guide plate shown in fig. 7 and 8 separated from a housing.

Referring to fig. 7 to 9, the exhaust apparatus 200 according to the second embodiment of the present invention includes a housing 210 including an air inlet 216 and a plurality of air outlets 218 and 219, a guide 220 installed inside the housing 210 to guide air flowing into the housing 210 through the air inlet 216, and an exhaust pipe 231 as an exhaust member directly or indirectly connected to the plurality of air outlets 218 and 219 and exhausting the air flowing into the housing 210 to the outside of the housing 210 through the plurality of air outlets 218 and 219.

As described above, the basic components of the exhaust apparatus 200 according to the second embodiment of the present invention are substantially the same as those of the exhaust apparatus 100 according to the first embodiment. However, the air discharging device 200 according to the second embodiment of the present invention can operate more effectively in the case where the air discharging device 200 sucks air from a partial angular range of the front instead of the entire range of the front, for example, the case where there is an obstacle such as a vertical wall in the vicinity of the air discharging device 200 vertically disposed on the center axis C, the case where the air discharging device 200 horizontally disposed on the center axis C sucks polluted air generated by a horizontal floor or table, or the like.

Accordingly, as described in detail below, there are some differences between the exhaust apparatus 200 according to the second embodiment of the present invention and the exhaust apparatus 100 according to the first embodiment, and these differences will be mainly described below. Therefore, descriptions of the same features may be omitted or briefly explained.

The case 210 preferably has a rectangular parallelepiped shape, but is not limited thereto. For example, the housing 210 may have a semi-cylindrical shape corresponding to a semi-circular air inlet 216, which will be described later. The case 210 includes a front wall 211 at one side of the inside of the air inflow case 210, a rear wall 212 facing the front wall 211 at a predetermined distance, and a side wall 214 between the front wall 211 and the rear wall 212. An air inlet 216 through which air flows into the interior of the housing 210 is formed in the front wall 211 of the housing 210, and a plurality of air outlets 218 and 219 through which air is discharged from the housing 210 are formed in the rear wall 212.

The air inlet 216 may have a substantially semi-circular shape, which in this regard differs from the air inlet 116 shown in fig. 2. The air inlet 216 is preferably defined by a circular arc portion 216a having a central angle of substantially 180 ° and a straight line portion 216b connecting both ends of the circular arc portion 216 a.

The plurality of exhaust ports 218 and 219 preferably have a circular shape, but are not limited thereto, and may have other suitable shapes, such as polygonal, elliptical, or semicircular, depending on the positions where the exhaust ports 218 and 219 are disposed.

The plurality of exhaust ports 218 and 219 may include a first exhaust port 218 and a plurality of second exhaust ports 219. The center of the first exhaust port 218 may preferably coincide with the center of the intake port 216. The plurality of second exhaust ports 219 may be spaced apart from the first exhaust port 218 and suitably disposed in dispersion on the rear wall 212 of the housing 210.

Fig. 7 shows an example in which the central axis C is horizontally arranged, but the exhaust apparatus 200 is not limited thereto. As described above, in the exhaust apparatus 200, the central axis C may be arranged vertically or may be arranged obliquely at a predetermined angle.

The plurality of exhaust ports 218 and 219 may be directly connected to respective exhaust pipes (not shown), but are not limited thereto. As described above, the plurality of exhaust ports 218 and 219 may be indirectly connected to the at least one exhaust pipe 231 through the exhaust box 250 and the at least one common exhaust port 258, which is formed on the rear wall 252 of the exhaust box 250, and the exhaust box 250 is combined with the rear of the housing 210 and surrounds the plurality of exhaust ports 218 and 219 together. The center of the common vent 258 may coincide with the center axis C, but is not limited thereto. For example, the common exhaust port 258 may be formed at a substantially central portion of the rear wall 252 of the exhaust box 250.

Since the exhaust pipe 231 is the same as the exhaust pipe 131 of the exhaust device 100 according to the first embodiment, a detailed description thereof will be omitted.

The guide 220 may include a plurality of guide plates, preferably three guides 221, 222, and 223, installed inside the housing 110, and effective to guide air flowing into the housing 210 through the air inlet 118, but is not limited thereto. That is, the guide may include two or four or more guide plates.

The plurality of guide plates 221, 222, and 223 are disposed between the front wall 211 and the rear wall 212 of the housing 210. The plurality of guide plates 221, 222, and 223 may include a first guide plate 221, a second guide plate 222, and a third guide plate 223, adjacent guide plates being spaced apart from each other by a predetermined distance in a central axis C direction from the front wall 211 to the rear wall 212, the first guide plate 221 being spaced apart from the front wall 211, and the third guide plate 223 being spaced apart from the rear wall 212.

The specific arrangement of the plurality of guide plates 221, 222, and 223 and the distances therebetween are the same as those of the guide plates 121, 122, and 123 of the exhaust apparatus 100 according to the first embodiment of the present invention, and thus, a detailed description thereof will be omitted.

As shown in fig. 9, the first guide plate 221, the second guide plate 222, and the third guide plate 223 are each substantially circular arc-shaped, having predetermined widths W1, W2, and W3, respectively, in a radial direction around the central axis C. In particular, the plurality of guide plates 221, 222, and 223 preferably have a circular arc shape with a center angle of about 180 ° to 210 °. The widths W1, W2, and W3 of the plurality of guide plates 221, 222, and 223 may all be the same, but are not limited thereto. As such, the guide plates 221, 222, and 223 are different from the annular guide plates 121, 122, and 123 shown in fig. 4 in that the former have a circular arc shape.

The circular arc-shaped guide plates 221, 222, and 223 are respectively fixed to the side walls 214 of the housing 210 so as to be fixedly disposed inside the housing 210. For this, the circular arc-shaped guide plates 221, 222, and 223 may have lugs (lug) 125 for fixing at outer edges of each end, and may be fixed to the side wall 214 of the housing 210 by the lugs 225.

The circular arc-shaped guide plates 221, 222, and 223 are disposed concentrically with the air inlet 216 and the first air outlet 218. However, the guide plates 221, 222, and 223, the air inlet 216, and the first air outlet 218 each have different radii. The dimensional relationship between the inside radius of the air inlet 216, the inside radius of the first air outlet 218, and the inside radii Ri1, ri2, and Ri3 and the outside radii Ro1, ro2, and Ro3 of each of the guide plates 221, 222, and 223 is the same as the dimensional relationship between the inside radius Ra of the air inlet 116, the inside radius Rb of the first air outlet 118, and the inside radii Ri1, ri2, and Ri3 and the outside radii Ro1, ro2, and Ro3 of the air outlet 100 according to the first embodiment, and thus will not be repeated.

As described above, in the second embodiment of the present invention, the inside radii of the air inlet 216, the first guide plate 221, the second guide plate 222, the third guide plate 223, and the first air outlet 218 become smaller gradually from the air inlet 216 toward the first air outlet 218, and the air flow passage formed inside thereof becomes narrower accordingly.

The operation of the exhaust apparatus 200 according to the second embodiment of the present invention having the above-described structure is substantially the same as the operation of the exhaust apparatus 100 according to the first embodiment described in detail above, and accordingly, the advantages of the exhaust apparatus 200 are the same as those of the exhaust apparatus 100 according to the first embodiment.

In particular, in the exhaust apparatus 200 according to the second embodiment of the present invention, since the air inlet 216 is semicircular and the guide plates 221, 222, and 223 are also circular arc-shaped, as described above, it is possible to operate more effectively in the case where the exhaust apparatus 200 sucks air from a partial angular range in front instead of the entire range in front, for example, in the case where there is an obstacle such as a vertical wall in the vicinity of the exhaust apparatus 200 in which the center axis C is vertically disposed, in the case where the exhaust apparatus 200 in which the center axis C is horizontally disposed sucks polluted air generated by a horizontal floor, table, or the like.

On the other hand, the exhaust apparatus 200 may further include an auxiliary guide plate 245 and a side guide plate 246.

The auxiliary guide plate 245 extends from the rear wall 212 toward the front wall 211 of the housing 210 in a direction parallel to the center axis C. In an example in which the auxiliary guide plate 245 is provided, the first exhaust port 218 may not have a circular shape but have a semicircular shape corresponding to the air inlet 216, and the auxiliary guide plate 245 may extend horizontally from a position adjacent to an edge of the first exhaust port 218 to the front wall 211. The auxiliary guide plate 245 has a width greater than the diameter of the first exhaust port 218 but less than or equal to twice the inner radius Ri3 of the third guide plate 223 such that the auxiliary guide plate 245 does not interfere with the third guide plate 223. The auxiliary guide plate 245 functions to smoothly guide the inside air flow Fi flowing into the inside of the case 210 through the air inlet 216 to the first air outlet 218.

The side guide plates 246 extend vertically downward from both side edges of the auxiliary guide plates 245 to the bottom of the housing 210. The side guide plate 246 functions to smoothly guide the outside air flow Fo flowing into the inside of the housing 210 to the second air outlet 219 provided at both sides of the first air outlet 218.

Fig. 10 is a partial perspective view of a modification of the portion provided with the auxiliary guide plate shown in fig. 7 and 8, and fig. 11 is a vertical sectional view of the portion shown in fig. 10.

Referring to fig. 10 and 11, the auxiliary guide plate 245 extends from the rear wall 212 of the housing 210 toward the front wall 211, but does not extend to the front wall 211, and is spaced a predetermined distance from the front wall 211. In addition, at least one front guide plate, for example, two front guide plates 247 and 248 may be provided in the gap between the front end of the auxiliary guide plate 245, i.e., the end facing the air inlet 216 and the front wall 211.

The front guide plates 247 and 248 each have predetermined widths W11 and W12 in a direction perpendicular to the bottom of the housing 210, and extend parallel to the front wall 211 between the side guide plates 246, with both ends in the length direction thereof being fixed to the side guide plates 246. The widths W11 and W12 of the front guide plates 247 and 228 may be the same, but are not limited thereto. The front guide plates 247 and 248 are spaced apart not only from the front end of the auxiliary guide plate 245 and the front wall 211 but also from each other by a predetermined distance. That is, the first front guide plate 247 is disposed in parallel with the front wall 211 with a predetermined first gap G11 from the front wall 211, and the second front guide plate 248 is disposed in parallel with the first front guide plate 247 with a predetermined second gap G12 from the first front guide plate 247. In addition, the second front guide plate 248 has a predetermined third gap G13 between the ends of the auxiliary guide plates.

The upper end of the first front guide plate 247 may be higher than or equal to the straight line portion 216b of the air inlet 216 formed in the front wall 211, and the upper end of the second front guide plate 248 may be higher than the upper end of the first front guide plate 247 and the same height as the auxiliary guide plate 245. That is, the farther the front guide plates 247 and 248 are from the front wall 211 of the housing, the higher the upper ends thereof are disposed.

If only one front guide plate is provided, for example, only the first front guide plate 247 is provided, the upper end of the first front guide plate 247 may be higher than or equal to the straight portion 216b of the air inlet 216 formed in the front wall 211, and may be equal to or lower than the height of the auxiliary guide plate 245.

The widths W11 and W12, the gaps G11, G12 and G13, and the set heights of the front guide plates 247 and 248 may be set to values showing the optimal air flow through a plurality of experiments according to the required exhaust capacity of the exhaust apparatus 200 and/or the size of the housing 210.

As shown in fig. 11, the front guide plates 247 and 248 function not only to smoothly guide the outside air flow Fo flowing into the interior of the housing 210 from the front lower portion of the front wall 211 of the housing 210 over the straight portion 216b of the air inlet 216 to the second air outlet 219 provided at the lower portion of the rear wall 212, but also to more smoothly guide the inside air flow Fi toward the first air outlet 218.

Referring to fig. 12, the auxiliary guide plate 245 extends from the rear wall 212 to the front wall 211 of the housing 210, but does not extend to the front wall 211, and is spaced a predetermined distance from the front wall 211. In this modification, the auxiliary guide plate 245 is slightly moved toward the bottom of the housing 210 to further enlarge the area of the first exhaust port 218, as compared with the embodiment shown in fig. 7 to 11. Accordingly, the first exhaust port 218 may have a shape between a semicircle and a perfect circle as shown in fig. 12, or a perfect circle shape, instead of having a semicircle shape as shown in fig. 7 to 11.

Further, a front guide plate 249 extending vertically upward from the end portion on the front end of the auxiliary guide plate 245, that is, the end portion on the intake port 216 side may be provided. The front guide plate 249 is fixed to an end of the auxiliary guide plate 245 and extends parallel to the front wall 211 with a predetermined gap G21 from the front wall 211. The upper end of the front guide plate 249 is at the same height as the straight line portion 216b of the air inlet 216 formed in the front wall 211.

A part of the air flow flowing into the interior of the housing 210 from the front lower portion of the front wall 211 of the housing 210 beyond the straight portion 216b of the air inlet 216 is guided to the second air outlet 219 provided below the rear wall 212 of the housing 210 through the gap G21 between the front guide plate 249 and the front wall 211.

Side guide plates 261 extending vertically upward therefrom may be provided on both side edges of the auxiliary guide plate 245. The front guide plate 249 may be disposed between the side guide plates 261. Unlike the side guide plate 246 shown in fig. 7, the side guide plate 261 functions to smoothly guide the inside airflow Fi flowing into the inside of the housing 210 to the first exhaust port 218. The upper end of the side guide plate 261 may have a height higher than that of the straight portion 216b of the air inlet 216 formed in the front wall 211, but is not limited thereto. For example, the upper end of the side guide plate 261 may have the same height as the straight portion 216b of the air inlet 216. In addition, the height of the side guide plate 261 may be the same as the height of the front guide plate 249, or may be higher than the height of the front guide plate 249.

The side guide plate 261 may extend from the rear wall 212 to the front wall 211 of the housing 210, and a front end of the side guide plate 261 may be connected to a shielding plate 263 covering a portion of both sides of the air inlet 216. The shutter 263 may be formed by extending the front wall 211 of the housing 210 upward to a certain height from both sides of the straight portion 216b of the air inlet 216. The shutter 263 serves to smooth the air flow in the vicinity of the corner where the circular arc portion 216a and the straight portion 216b of the semicircular air inlet 216 intersect.

A side guide plate 261 and a front guide plate 249 may be selectively provided on the auxiliary guide plate 245, but preferably, the side guide plate 261 and the front guide plate 249 are provided together. In this case, the height of the side guide plate 261 may be equal to or higher than the height of the front guide plate 249.

Fig. 13 is an external perspective view showing an example of a horizontal arrangement of a central axis of an exhaust apparatus according to a third embodiment of the present invention, fig. 14 is a rear perspective view of the exhaust apparatus shown in fig. 13, fig. 15 is a vertical cross-sectional view in a central axis direction of the exhaust apparatus shown in fig. 13, and fig. 16 is a schematic view showing an example of using the exhaust apparatus shown in fig. 13 as a flow fence forming device.

Referring to fig. 13 to 16, the exhaust apparatus 300 according to the third embodiment of the present invention includes a housing 310 including an air inlet 216 and a plurality of air outlets 318 and 319, a guide 320 installed inside the housing 310 for guiding air flowing into the interior of the housing 310 through the air inlet 216, and an exhaust member directly or indirectly connected to the plurality of air outlets 318 and 319 and exhausting the air flowing into the interior of the housing 310 to the outside of the housing 210 through the plurality of air outlets 318 and 319.

As described above, the basic components of the exhaust apparatus 200 according to the second embodiment of the present invention are substantially the same as those of the exhaust apparatus 200 according to the second embodiment. Accordingly, in fig. 13 to 15, the same components as those of the exhaust apparatus 200 according to the second embodiment of the present invention are given the same reference numerals. However, as described in detail below, there are some differences between the exhaust apparatus 300 according to the third embodiment of the present invention and the exhaust apparatus 200 according to the second embodiment, and these differences will be mainly described below. Therefore, descriptions of the same features may be omitted or briefly explained.

Similar to the above-described embodiments, the exhaust apparatus 300 according to the third embodiment of the present invention includes an exhaust box 350, the exhaust box 350 being combined with the rear of the housing 310 and surrounding the plurality of exhaust ports 318 and 319 together, the height H2 of the exhaust box 350 being lower than the height H1 of the housing 310. Thus, a step is formed between one sidewall 314 of the housing 310 and its corresponding sidewall 354, i.e., one sidewall 354 of the exhaust box 350 facing in the same direction.

In the exhaust box 350, at least one, and preferably two, common exhaust ports 358 may be formed on one of the side walls 354 of the exhaust box 350 instead of on the rear wall 352 of the exhaust box 352, the side walls 354 being side walls 354 forming a step between the corresponding side walls 314 of the housing 310. In each of the common exhaust ports 358, an exhaust fan 331 may be provided as the exhaust member instead of the exhaust pipe (231 in fig. 7). Accordingly, as shown in fig. 15, the air flowing from the housing 310 into the inside of the exhaust box 350 through the plurality of exhaust ports 318 and 319, that is, the inside air flow Fi flowing into the inside of the exhaust box 350 through the first exhaust port 218 and the outside air flow Fo flowing into the inside of the exhaust box 350 through the second exhaust port 219 are discharged to the outside through the common exhaust port 358 and the exhaust fan 331. In addition, for example, the air inside the air discharge box 350 is discharged from the air discharge box 350 in a direction substantially perpendicular to the air inflow direction, not in a direction parallel to the air inflow direction.

In addition, the exhaust apparatus 300 according to the third embodiment of the present invention further includes at least one, and preferably two additional exhaust ports 371 formed on one of the side walls 314 of the housing 310, that is, on the side wall 310 of the housing 310 corresponding to the side wall 354 of the exhaust box 359 on which the common exhaust port 358 is formed, and an exhaust fan 332 may be provided in each of the additional exhaust ports 371 to exhaust a portion of the air flowing into the interior of the housing 310 to the outside. As shown in fig. 15, a part of the outside air stream Fo flowing into the inside of the housing 310 through the air inlet 216 and guided by the plurality of guide plates 221, 222, and 223 flows into the inside of the exhaust box 350 through the second exhaust port 219, but the remaining part is discharged to the outside of the housing 310 through the exhaust ports 371 and the exhaust fan 332 of the additional etc. Accordingly, the air discharged through the additional exhaust ports 371 among the air flowing into the inside of the housing 310 is discharged from the housing 310 in a direction substantially perpendicular to the direction flowing into the inside of the housing 310, rather than in a direction parallel to the direction flowing into the inside of the housing 310.

The modification shown in fig. 10 to 12 may be applied to the exhaust device 300 of the third embodiment of the present invention having the above-described structure.

The exhaust device 300 may be used as a device for forming a flow fence (air fence), as shown in fig. 16.

More specifically, the exhaust apparatus 300 may be disposed such that its center is perpendicular to the entrance of the ceiling CE of the working space WS where the polluted air is generated. In addition, the exhaust apparatus 200 according to the second embodiment of the present invention may be disposed beside the exhaust apparatus 300 and closer to the inside of the working space WS than the exhaust apparatus 300, that is, between the exhaust apparatus 300 and the inner wall SW of the working space WS. On the other hand, the exhaust devices 200 and 300 are shown in fig. 16 as being installed one by one, but a plurality of exhaust devices 200 and 300 may be arranged side by side in a row according to the entrance width of the working space WS. In addition, the exhaust device 100 according to the first embodiment may be installed instead of the exhaust device 200 according to the second embodiment of the present invention.

As described above, in the exhaust apparatus 300, the flow direction of the air flowing into the inside of the exhaust apparatus 300 is substantially at right angles to the flow direction of the air discharged from the exhaust apparatus 300, as shown in fig. 16, a circulating air flow may be formed in front of the working space WS, which is mainly composed of clean air outside the working space WS instead of polluted air inside the working space WS, and a flow guide fence Fa blocking the inside and outside of the working space WS is formed. Such a flow fence Fa may function to prevent the polluted air inside the working space WS from escaping to the outside of the working space WS. In addition, the flow fence Fa may prevent air outside the working space WS from flowing into the inside of the working space WS, so that the exhaust efficiency of the exhaust device 200 may be improved. The polluted air flowing into the exhaust apparatus 200 is discharged through the exhaust pipe 231.

The exhaust apparatus 300 'shown in fig. 17 is different from the exhaust apparatus 300 shown in fig. 13 to 15 in that the height of the exhaust box 350' is equal to the height of the housing 310, and the common exhaust port and the additional exhaust port are not separately formed but an integrated exhaust port 372 integrating the common exhaust port and the additional exhaust port.

Specifically, the height H2 of the exhaust box 350 'of the exhaust apparatus 300' is equal to the height H1 of the housing 310. Thus, the sidewall 314 of the housing 310 and the sidewall 354 'of the exhaust box 350' form a plane. One of the side walls 314 of the housing 310 and the side wall 354' of the exhaust box 350' corresponding thereto are formed with at least one, and preferably two, integrated exhaust ports 372 across the housing 310 and the exhaust box 350 '. In addition, an exhaust fan 333 is provided in each of the integrated exhaust ports 372 as an exhaust member.

According to the above-described structure, a part of the outside air stream Fo flowing into the inside of the housing 310 through the air inlet 216 and guided by the plurality of guide plates 221, 222, and 223 is discharged to the outside of the housing 310 through the integrated air outlet 372 and the air outlet 333 formed on the side wall 314 of the housing 310, and the air flowing into the inside of the air discharge box 350 from the housing 310 through the plurality of air outlet 318 and 319 is discharged to the outside of the air discharge box 350' through the integrated air outlet 372 and the air outlet 333 formed on the side wall 354' of the air discharge box 350 '.

The modification shown in fig. 10 to 12 may be applied to the exhaust device 300' having the above-described structure.

As described above, the exhaust apparatus 300' shown in fig. 17 has an advantage in that the number of exhaust ports is reduced, and thus the number of exhaust fans is also reduced, over the exhaust apparatus 300 shown in fig. 13 to 16.

The invention has been described with reference to the embodiments shown in the drawings, but these are merely examples and it will be understood by those of ordinary skill in the art that various modifications and other equivalent embodiments can be obtained thereby. Accordingly, the true scope of the invention should be indicated by the following claims.

Claims

1. An exhaust device, comprising:

A housing, comprising a front wall and a rear wall, wherein the front wall is formed with an air inlet, and the rear wall is opposite to the front wall and is formed with a plurality of air outlets;

a guide installed inside the housing and used to guide the air flowing into the housing through the air inlet; and

an exhaust member which is directly or indirectly connected to the plurality of exhaust ports and discharges the air flowing into the interior of the housing to the outside of the housing through the plurality of exhaust ports,

The plurality of exhaust ports include a first exhaust port and a plurality of second exhaust ports, the first exhaust port being disposed at a position corresponding to the center of the air inlet, the second exhaust ports being spaced apart from the first exhaust port and being dispersedly disposed on the rear wall of the housing,

The guide member includes a plurality of guide plates which are spaced apart from each other along the central axis direction of the air inlet between the front wall and the rear wall of the housing and are arranged parallel to the front wall.

The plurality of guide plates are concentrically arranged around the central axis of the air inlet, and each guide plate is annular or arc-shaped.

The inner radius of the plurality of guide plates is smaller than the inner radius of the air inlet and larger than the inner radius of the first exhaust port, and gradually becomes smaller from the air inlet to the first exhaust port.

2. The exhaust device according to claim 1, characterized in that:

The outer radius of the plurality of guide plates gradually decreases from the air inlet to the first exhaust port, and among the plurality of guide plates, the outer radius of the guide plate closest to the front wall of the shell is larger than the inner radius of the air inlet.

3. The exhaust device according to claim 1, characterized in that:

The plurality of guide plates are fixed on the side wall or the rear wall of the housing so as to be fixedly disposed inside the housing.

4. The exhaust device according to claim 3, characterized in that:

The plurality of guide plates respectively have lugs for fixing, and are fixed to the side wall or the rear wall of the housing through the lugs.

5. The exhaust device according to claim 1, characterized in that:

The housing has a rectangular parallelepiped shape or a cylindrical shape.

6. The exhaust device according to claim 1, characterized in that:

The exhaust device also includes an exhaust box, which is coupled to the rear of the shell and surrounds the multiple exhaust ports together. At least one common exhaust port is formed on the rear wall of the exhaust box, which is used to exhaust the air flowing into the interior of the exhaust box through the multiple exhaust ports to the outside. At least one exhaust pipe is connected to the at least one common exhaust port as the exhaust member.

7. The exhaust device according to claim 1, characterized in that:

The exhaust device further includes an exhaust box, which is coupled to the rear of the shell and surrounds the plurality of exhaust ports together. The height of the exhaust box is lower than the height of the shell, so that at least one common exhaust port is formed on the side wall of the exhaust box that forms a step with the corresponding side wall of the shell, and is used to exhaust the air flowing into the exhaust box through the plurality of exhaust ports to the outside. The at least one common exhaust port is provided with at least one exhaust fan as the exhaust member.

At least one additional exhaust port is formed on the side wall of the shell corresponding to the side wall of the exhaust box formed with the common exhaust port, which is used to discharge part of the air flowing into the interior of the shell to the outside of the shell, and the at least one additional exhaust port is provided with at least one exhaust fan.

8. The exhaust device according to claim 1, characterized in that:

The exhaust device also includes an exhaust box, which is combined with the rear part of the shell and surrounds the multiple exhaust ports together. The height of the exhaust box is the same as the height of the shell. At least one integrated exhaust port spanning the shell and the exhaust box is formed on one of the side walls of the exhaust box and the corresponding side wall of the shell. The at least one integrated exhaust port is provided with at least one exhaust fan. The air flowing into the shell and the exhaust box is discharged to the outside of the shell and the exhaust box through the at least one integrated exhaust port.

9. The exhaust device according to any one of claims 1 to 6, characterized in that:

The air inlet is circular, and the plurality of guide plates are ring-shaped with a radial width.

10. The exhaust device according to claim 9, characterized in that:

The plurality of guide plates are each divided into a plurality of arc-shaped pieces, and the plurality of arc-shaped pieces of each of the plurality of guide plates are arranged together to form a ring inside the housing.

11. The exhaust device according to any one of claims 1 to 8, characterized in that:

The air inlet is substantially semicircular, and the plurality of guide plates are arc-shaped with a radial width.

12. The exhaust device according to claim 11, characterized in that:

The exhaust device further includes an auxiliary guide plate extending from a position on the rear wall of the shell body close to an edge of the first exhaust port toward the front wall of the shell body in a direction parallel to the central axis.

13. The exhaust device according to claim 12, characterized in that:

The auxiliary guide plate has a width which is greater than a diameter of the first exhaust port but does not interfere with a guide plate which is closest to the rear wall of the housing among the plurality of guide plates.

14. The exhaust device according to claim 11, characterized in that

The exhaust device further includes a plurality of side guide plates vertically extending from both side edges of the auxiliary guide plate to the bottom of the shell.

15. The exhaust device according to claim 14, characterized in that

The auxiliary guide plate is spaced a predetermined distance from the front wall of the housing, and at least one front guide plate is provided in the gap between the front end of the auxiliary guide plate and the front wall of the housing.

The at least one front guide plate is spaced apart from the front end of the auxiliary guide plate and the front wall of the shell, has a width in a direction perpendicular to the bottom of the shell, and is arranged between the side guide plates parallel to the front wall of the shell, and both ends of the length direction of the front guide plate are fixed to the side guide plates.

16. The exhaust device according to claim 15, characterized in that

The at least one front guide plate includes a plurality of front guide plates arranged in parallel and at intervals, and the further away from the front wall of the housing the plurality of front guide plates are, the higher the upper ends thereof are arranged.

17. The exhaust device according to claim 12, characterized in that:

The exhaust device further includes a plurality of side guide plates extending vertically upward from both side edges of the auxiliary guide plate.

18. The exhaust device according to claim 17, characterized in that:

The auxiliary guide plate is spaced a predetermined distance from the front wall of the housing, and a front guide plate extending vertically upward from the front end of the auxiliary guide plate is provided at the front end of the auxiliary guide plate.

The front guide plate is parallel to and spaced apart from the front wall of the housing.

19. The exhaust device according to claim 18, characterized in that

The side guide plates extend from a rear wall of the housing to a front wall of the housing, and the front guide plate is disposed between the side guide plates.