Exhaust device

Abstract

Disclosed is an exhaust device for sucking in polluted air and discharging it to the outside. The disclosed exhaust device comprises: a housing having an intake port and a plurality of exhaust ports; a guide member installed inside the housing and used 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 disposed at a position corresponding to the center of the air inlet, and a plurality of second exhaust ports spaced apart from the first exhaust port and dispersedly disposed on the rear wall of the housing. The guide includes a plurality of guide plates disposed between a front wall and a rear wall of the housing. The plurality of guide plates are concentrically arranged with the air inlet around the central axis of the air inlet, and each guide plate is annular or arc-shaped. The inner side radius of the plurality of guide plates is smaller than the inner side radius of the air inlet and larger than the inner side radius of the first air outlet, and gradually becomes smaller from the air inlet to the first air outlet.

Description

Technical Field

[0001] The present invention relates to an exhaust device which sucks polluted air and discharges it to the outside, and more particularly, to an exhaust device which can improve exhaust efficiency. Background Art

[0002] Exhaust devices are usually installed in factories, homes or restaurant kitchens that produce pollutants such as odor, harmful gases, smoke, dust, etc., and are used to inhale air containing these pollutants (hereinafter referred to as polluted air) and discharge it to the outside.

[0003] In the existing exhaust device used for this purpose, the exhaust efficiency of sucking in and exhausting polluted air decreases rapidly as the distance between the pollution source and the exhaust device increases, and the exhaust efficiency of the exhaust device decreases even if the pollution source is located in an open space.

[0004] Therefore, preferably, in order to improve the exhaust efficiency, the exhaust device needs to be installed as close to the pollution source as possible and separate the pollution source from the surrounding space.

[0005] However, in many cases, it is difficult to install an exhaust device near a pollution source, or it is difficult to isolate the pollution source from a surrounding space, and in these cases, there is a problem that satisfactory exhaust efficiency cannot be obtained from the existing exhaust device.

[0006] Previously, in order to solve this problem, an exhaust fan with a larger capacity than required was used to increase the intake amount of polluted air, but in this case, not only the economic feasibility was reduced due to increased noise and excessive installation and operation costs, but also there was a disadvantage that satisfactory exhaust efficiency could not be achieved.

[0007] Recently, these existing local exhaust devices are usually equipped with a cyclone, which is installed near the exhaust pipe inlet and used to generate a vortex. 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 toward the exhaust pipe inlet. The vortex thus formed acts as an air curtain, blocking the pollution source in the surrounding space and allowing the polluted air to be more effectively sucked into the exhaust pipe.

[0008] In addition, Korean registered patent No. 10-1606862 discloses an exhaust device, which includes: a swirler for forming a vortex; and a guide member for expanding the air curtain formed by the vortex in a vertical direction. The advantage of the exhaust device is that polluted air far from the polluted air inlet can also be sucked in and discharged to the outside more easily and efficiently, so that the exhaust efficiency is improved.

[0009] However, the exhaust device has the disadvantage that it should be equipped with a swirler having a plurality of blades for forming a vortex, a separate motor for rotating the swirler, and a guide member with a slightly complicated structure for guiding the vortex, which increases the weight and complexity of the structure and makes the manufacturing cost expensive. In addition, the exhaust device has the disadvantage that it is difficult to install in a home or restaurant kitchen due to its complicated structure and difficulty in miniaturization. Summary of the invention

[0010] Technical issues

[0011] In order to solve the above-mentioned existing problems, an object of the present invention is to provide an exhaust device which can improve exhaust efficiency and has a relatively simple structure.

[0012] Technical Solution

[0013] In order to solve the above technical problems, the exhaust device according to an embodiment of the present invention includes:

[0014] 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;

[0015] a guide installed inside the housing and used to guide the air flowing into the housing through the air inlet; and

[0016] 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,

[0017] 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,

[0018] 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.

[0019] 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.

[0020] 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.

[0021] According to an embodiment of the present invention, the outer radius of the multiple guide plates may gradually decrease from the air inlet to the first exhaust port, and among the multiple guide plates, the outer radius of the guide plate closest to the front wall of the shell may be larger than the inner radius of the air inlet.

[0022] According to an embodiment of the present invention, the plurality of guide plates may be fixed on a side wall or a rear wall of the housing so as to be fixedly disposed inside the housing.

[0023] According to an embodiment of the present invention, the plurality of guide plates may respectively have lugs for fixing, and may be fixed to the side wall or the rear wall of the housing through the lugs.

[0024] According to an embodiment of the present invention, the housing may have a rectangular parallelepiped shape or a cylindrical shape.

[0025] According to one embodiment of the present invention, the exhaust device may further include an exhaust box, which is coupled to the rear portion of the shell and surrounds the multiple exhaust ports together. At least one common exhaust port may be formed on the rear wall of the exhaust box, which is used to discharge the air flowing into the interior of the exhaust box through the multiple exhaust ports to the outside. At least one exhaust pipe may be connected to the at least one common exhaust port as the exhaust member.

[0026] According to another embodiment of the present invention, the exhaust device may further include an exhaust box, which is coupled to the rear portion of the shell and surrounds the plurality of exhaust ports together. The height of the exhaust box may be 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 discharge the air flowing into the interior of the exhaust box through the plurality of exhaust ports to the outside. The at least one common exhaust port may be provided with at least one exhaust fan as the exhaust member.

[0027] At least one additional exhaust port may be formed on the side wall of the shell corresponding to the side wall of the exhaust box on which the common exhaust port is formed, and is used to discharge part of the air flowing into the interior of the shell to the outside of the shell. The at least one additional exhaust port may be provided with at least one exhaust fan.

[0028] According to another embodiment of the present invention, the exhaust device may further include an exhaust box, which is combined to the rear portion 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 may be 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, and the air flowing into the shell and the exhaust box can be discharged to the outside of the shell and the exhaust box through the at least one integrated exhaust port.

[0029] According to an embodiment of the present invention, the air inlet may be circular, and the plurality of guide plates may be ring-shaped with a radial width.

[0030] According to an embodiment of the present invention, the plurality of guide plates may each be divided into a plurality of arc-shaped pieces, and the plurality of arc-shaped pieces of each of the plurality of guide plates may be arranged together to form a ring shape inside the housing.

[0031] According to another embodiment of the present invention, the air inlet may be substantially semicircular, and the plurality of guide plates may be in an arc shape having a radial width.

[0032] According to another embodiment of the present invention, the exhaust device may further include an auxiliary guide plate extending from a position on the rear wall of the shell near an edge of the first exhaust port toward the front wall of the shell in a direction parallel to the central axis.

[0033] According to another embodiment of the present invention, the auxiliary guide plate may have a width which is greater than a diameter of the first exhaust port but does not interfere with a guide plate among the plurality of guide plates which is closest to the rear wall of the housing.

[0034] According to yet another embodiment of the present invention, the exhaust device may further include a plurality of side guide plates vertically extending from both side edges of the auxiliary guide plate to the bottom of the shell.

[0035] According to another embodiment of the present invention, the auxiliary guide plate is spaced a predetermined distance from the front wall of the shell, 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 shell. 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 front guide plate in the length direction can be fixed to the side guide plates.

[0036] According to yet another embodiment of the present invention, the at least one front guide plate may include a plurality of front guide plates arranged in parallel and at intervals, and the further away the plurality of front guide plates are from the front wall of the shell, the higher their upper ends are arranged.

[0037] According to yet another embodiment of the present invention, the exhaust device may further include a plurality of side guide plates extending vertically upward from both side edges of the auxiliary guide plate.

[0038] According to another embodiment of the present invention, the auxiliary guide plate is spaced a predetermined distance from the front wall of the shell, and the front end of the auxiliary guide plate is provided with a front guide plate extending vertically upward from the front end of the auxiliary guide plate, and the front guide plate can be parallel to and spaced apart from the front wall of the shell.

[0039] According to yet another embodiment of the present invention, the side guide plates extend from the rear wall of the housing to the front wall of the housing, and the front guide plate may be disposed between the side guide plates.

[0040] Beneficial Effects

[0041] The exhaust device according to the embodiment of the present invention has the advantage that, without requiring a swirler for forming a vortex, polluted air away from the exhaust device can be effectively sucked in and discharged to the outside, thereby improving exhaust efficiency.

[0042] In addition, the exhaust device of the present invention has the advantage that, since a cyclone is not used, a separate motor is not required to drive the cyclone, thereby simplifying its structure, which not only reduces the preparation cost but also reduces the power consumption required to operate the exhaust device.

[0043] Furthermore, the exhaust device of the present invention has the advantage that it can be miniaturized due to its simple structure, small size and light weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 FIG. 1 is a schematic diagram for explaining the basic structure and operation of the exhaust device according to the first embodiment of the present invention.

[0045] Figure 2 for Figure 1 The external perspective view of the exhaust system shown shows an example in which the central axis is arranged horizontally.

[0046] Figure 3 for Figure 2 A vertical cross-sectional view in the direction of the central axis of the exhaust device shown.

[0047] Figure 4 for Figures 1 to 3 A perspective view showing the guide plate separated from the housing.

[0048] Figure 5 for Figure 2 A perspective view of a modified example of the housing shown.

[0049] Figure 6 for Figure 5 A perspective view of a modified example of the guide plate shown.

[0050] Figure 7 This is an external perspective view of an exhaust device according to a second embodiment of the present invention, showing an example in which the central axis is arranged horizontally.

[0051] Figure 8 for Figure 7 A vertical cross-sectional view in the direction of the central axis of the exhaust device shown.

[0052] Fig. 9 for Figures 7 and 8 A perspective view showing the guide plate separated from the housing.

[0053] Fig.10 for Figure 7 and Figure 8 A partial perspective view of a modified example of a portion provided with an auxiliary guide plate is shown.

[0054] Fig.11 for Fig.10 A vertical cross-section of the portion shown.

[0055] Fig.12 for Figure 7 and Figure 8 A partial perspective view of another modified example of a portion provided with an auxiliary guide plate is shown.

[0056] Fig.13 This is an external perspective view of an exhaust device according to a third embodiment of the present invention, showing an example in which the central axis is arranged horizontally.

[0057] Fig.14 for Fig.13 A rear perspective view of the exhaust device is shown.

[0058] Fig.15 for Fig.13 A vertical cross-sectional view in the direction of the central axis of the exhaust device shown.

[0059] Fig.16 For use Fig.13 The exhaust device shown is a schematic diagram of an example of a guide grid forming device.

[0060] Fig.17 for Fig.13 A perspective view of a modified example of the exhaust device shown. DETAILED DESCRIPTION

[0061] Hereinafter, an exhaust device according to an embodiment of the present invention will be described with reference to the accompanying drawings. In the following drawings, the same reference numerals represent the same components.

[0062] Figure 1 is a schematic diagram for explaining the basic structure and operation of the exhaust device according to the first embodiment of the present invention, Figure 2 for Figure 1 The external perspective view of the exhaust device shown in the figure shows an example of a horizontal configuration of the central axis. Figure 3 for Figures 1 to 3 A vertical cross-sectional view of the exhaust device in the direction of the central axis shown in FIG. Figure 4 for Figure 3 A perspective view showing the guide plate separated from the housing.

[0063] See also Figures 1 to 4 According to the first embodiment of the present invention, the exhaust device 100 includes: a shell 110, which includes an air inlet 116 and a plurality of exhaust ports 118 and 119; a guide member 120, which is installed inside the shell 110 and is used to guide the air flowing into the shell 110 through the air inlet 116; and an exhaust pipe 131, which serves as an exhaust member and is directly or indirectly connected to the plurality of exhaust ports 118 and 119, and discharges the air flowing into the shell 110 to the outside of the shell 110 through the plurality of exhaust ports 118 and 119.

[0064] like Figure 2 As shown, 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 Figure 5 ).

[0065] The housing 110 includes a front wall 111 located at a side where air flows into the interior of the housing 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. An air inlet 116 is formed on the front wall 111 of the housing 110, through which air flows into the interior of the housing 110, and a plurality of air outlets 118 and 119 are formed on the rear wall 112, through which air is exhausted from the housing 110.

[0066] The air inlet 116 may preferably have a circular shape. The plurality of exhaust ports 118 and 119 may preferably have a circular shape, but are not limited thereto, and may also have other suitable shapes, such as polygonal, elliptical or semicircular, depending on the locations where the exhaust ports 118 and 119 are disposed.

[0067] 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 disposed at a position corresponding to the center of the air inlet 116. Preferably, the center of the first exhaust port 118 may coincide with the center of the air inlet 116, and a central axis C passing through the center of the first exhaust port 118 and the center of the air inlet 116 is not only the central axis of the housing 110 but also the entire air flow axis. The plurality of second exhaust ports 119 may be spaced apart from the first exhaust port 118 and appropriately dispersedly disposed on the rear wall 112 of the housing 110.

[0068] like Figure 1 As shown, in the exhaust device 100 according to the present invention, the central axis C may be vertical. Figure 2 and Figure 3 As shown, in the exhaust device 100 according to the present invention, the central axis C may also be horizontal. On the other hand, although not shown, in the exhaust device 100 according to the present invention, the central axis C may also be inclined at a predetermined angle. In this way, the exhaust device 100 according to the present invention may be arranged in various directions as long as it is determined that the polluted air can be most effectively sucked in according to the generation position of the polluted air and the installation position of the exhaust device 100. In each figure, the exhaust device 100 according to the present invention is arranged in a direction that more clearly shows its structure.

[0069] 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, for example, two or three exhaust pipes (not shown).

[0070] To this end, the exhaust device 100 according to the present invention may further include an exhaust box 150, which is coupled to the rear of the housing 110 and surrounds the plurality of exhaust ports 118 and 119 together. The shape of the exhaust box 150 may be the same as that of the housing 110, such as a rectangular parallelepiped shape, but the size of the exhaust box 150 may be smaller than that of the housing. For example, the width WB of the exhaust box in the direction of the central axis C may be smaller than the width WH of the housing.

[0071] 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. Therefore, the air exhausted from the housing 110 through the plurality of exhaust ports 118 and 119 can be merged in the exhaust box 150 and exhausted 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, is formed on the rear wall 158 of the exhaust box 150, and an exhaust pipe can be connected to each of these common exhaust ports. The plurality of exhaust ports 118 and 119 include about 6 to 9 exhaust ports 118 and 119 to achieve uniform exhaust from the housing, but only common exhaust ports 158, which are far less than the number of exhaust ports 118 and 119, such as one to three common exhaust ports 158, are formed in the exhaust box 150, so that the number of exhaust pipes 131 used is also far less than the number of exhaust ports 118 and 119. Therefore, preferably, the complexity caused by the plurality of exhaust pipes can be eliminated.

[0072] In the exhaust pipe 131, it is well known that, for example, a multi-blade fan (sirocco fan) (not shown) is provided. The function of the multi-blade fan is to form a negative pressure in the housing 110 (and the exhaust box 150), forcing the air outside the housing 110 to be sucked into the housing 110, and to discharge the sucked air to the outside through the exhaust pipe 131. The multi-blade fan can be installed at the exhaust end of the exhaust pipe 131. In this way, by installing the multi-blade fan in the exhaust pipe 131, an airflow is formed from the outside of the housing 110 through the air inlet 116 of the front wall 111 of the housing 110, the inside of the housing 110, the exhaust ports 118 and 119 of the rear wall 112 of the housing 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 pipe 131 to be discharged to the outside.

[0073] The guide member 120 may include a plurality of guide plates 121 , 122 and 123 , which are installed inside the housing 110 and are used to effectively guide the air flowing into the housing 110 through the air inlet 118 .

[0074] The drawings show three guide plates 121 , 122 and 123 , but the invention is not limited thereto. Two, four or more guide plates may be disposed inside the housing 110 according to the exhaust capacity required by the exhaust device 100 and / or the size of the housing 110 .

[0075] 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, and in a direction of a central axis C from the front wall 111 to the rear wall 112, adjacent guide plates are spaced apart from each other by a predetermined distance, the first guide plate 121 is spaced apart from the front wall 111, and the third guide plate 123 is spaced apart from the rear wall 112.

[0076] Specifically, Figure 3 As shown, the first guide plate 121 is arranged parallel to the front wall 111 and is spaced apart 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 arranged parallel to 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 arranged parallel to 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 arranged parallel to the rear wall 112 and is spaced apart from the rear wall 112 by a predetermined fourth gap G4. In this way, the front wall 111, the three guide plates 121, 122 and 123, and the rear wall 112 are arranged parallel to each other at a predetermined distance. At this time, in order to optimize the airflow 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 be gradually increased or decreased toward the rear wall 112, and values ​​showing optimal airflow may be determined through multiple experiments. In addition, the gaps G1, G2, G3, and G4 may be appropriately determined according to the exhaust capacity required by the exhaust device 100 and / or the size of the housing 110.

[0077] like Figure 4 As shown, the first guide plate 121, the second guide plate 122 and the third guide plate 123 are all annular, and have predetermined widths W1, W2 and W3 in the radial direction around the central axis C, respectively. The widths W1, W2 and W3 may all be the same, but are not limited thereto. The annular guide plates 121, 122 and 123 are respectively fixed to the side wall 114 of the housing 110, so that they can be fixedly arranged inside the housing 110. To this end, the annular guide plates 121, 122 and 123 may have a lug 125 for fixing at each outer edge, and may be fixed to the side wall 114 of the housing 110 by the lug 125. The lug 125 may have a plurality of lugs except Figure 4 Any suitable shape and size other than the shapes and sizes shown. In addition, the lugs 125 can be fixed to the side wall 114 of the housing 110 by suitable fastening means, such as screws or adhesives.

[0078] The annular guide plates 121, 122 and 123 are disposed concentrically with the air inlet 116 and the first exhaust port 118. However, the guide plates 121, 122 and 123, the air inlet 116 and the first exhaust port 118 each have a different radius.

[0079] Specifically, Figure 3 and Figure 4 As shown, 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 inner radius of the air inlet 116, the first guide plate 121, the second guide plate 122, the third guide plate 123 and the first exhaust port 118 gradually decreases from the air inlet 116 to the first exhaust port 118, and the air flow channel formed therein also gradually narrows accordingly. According to the exhaust capacity required by the exhaust device 100 and / or the size of the housing 110, the inner radius and the outer radius of the air inlet 116, the guide plates 121, 122 and 123 and the first exhaust port 118 can be set to values ​​showing the best performance through multiple experiments.

[0080] 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.

[0081] See also Figure 1When the multi-blade fan provided in the exhaust duct 131 starts to operate, negative pressure is formed inside the housing 110, so that the air outside the housing 110 flows into the housing 110 through the air inlet 116. The air flowing into the housing 110 includes the external air around the housing 110 (the air includes clean air and polluted air) and the external air in the direction of the central axis C of the housing 110 (the air is mostly polluted air). The air flowing into the housing 110 from the periphery of the housing 110 forms an outer airflow 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. By arranging the guide plates 121, 122 and 123 having the above-mentioned structure, as shown in FIG. Figure 1 As shown, the outside airflow Fo formed in this way has a shape that gradually narrows as it moves toward the first exhaust port 118 , so that an air guide passage having a shape that gradually narrows toward the first exhaust port 118 is formed inside the outside airflow Fo.

[0082] The external air (i.e., mostly polluted air) in the direction of the central axis C of the housing 110 flows into the housing 110 toward the first exhaust port 118 to form an inner air flow Fi. The inner air flow Fi is guided to the first exhaust port 118 through a gradually narrowing air guide passage formed inside the outer air flow Fo.

[0083] The inner airflow Fi flows into the exhaust box 150 through the first exhaust port 118, and the outer airflow Fo flows into the exhaust box 150 through the plurality of exhaust ports 119. The inner airflow Fi and the outer airflow Fo merge in the exhaust box 150 and are then discharged through the common exhaust port 158 ​​and the exhaust pipe 131.

[0084] As described above, in the exhaust device 100 according to the present invention, the outer airflow Fo gradually narrowed toward the first exhaust port 118 due to the plurality of guide plates 121, 122, and 123 surrounds the inner airflow Fi, suppresses the inner airflow Fi from spreading outward, and smoothly guides the inner airflow Fi to the first exhaust port 118. In addition, the passage through which the inner airflow Fi passes (i.e., the air guide passage formed inside the outer airflow Fo) is narrowed due to the outer airflow Fo, thereby increasing the speed of the inner airflow Fi and increasing the negative pressure, and even polluted air far away from the exhaust device 100 can be effectively captured.

[0085] As described above, the exhaust device 100 does not have an existing cyclone for forming a vortex, but can effectively suck in polluted air away from the exhaust device 100 and discharge it to the outside only by a multi-blade fan installed in the exhaust duct, thereby improving the exhaust efficiency. In addition, since the exhaust device 100 of the present invention does not use an existing cyclone, a separate motor is not required to drive the cyclone, thereby simplifying its structure, which not only reduces the preparation cost of the exhaust device 100, but also reduces the power consumption required to operate the exhaust device 100. In addition, since the exhaust device 100 has a simple structure, a small size, and a light weight, it can be miniaturized.

[0086] Figure 5 for Figure 2 A perspective view of a modified example of the housing shown.

[0087] In addition to the different shapes of the shell and exhaust box, Figure 5 The variants shown are Figures 1 to 4 The first embodiment shown is substantially identical, so only the differences between them will be described below.

[0088] See also Figure 5 As described above, the housing 110' may have a cylindrical shape. The housing 110' includes: a front wall 111' having an air inlet 116'; a rear wall 112' having a plurality of air outlets 118' and 119'; and a side wall 114' connecting the front wall 111' and the rear wall 112'.

[0089] 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 port 118' is disposed at a position corresponding to the center of the air inlet 116', and the plurality of second exhaust ports 119' may be appropriately dispersedly disposed on the rear wall 112' of the housing 110'.

[0090] An exhaust box 150' that surrounds the plurality of exhaust ports 118' and 119' together may be coupled to the rear portion of the housing 110'. The shape of the exhaust box 150' may be the same as that of the housing 110', such as a cylindrical shape, but the size of the exhaust box 150' may be smaller than that 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 the approximate center of the rear wall 152' of the exhaust box 150', and the common exhaust port 158' is connected to the exhaust pipe 131'.

[0091] exist Figure 5In the illustrated variation, the guide member 120 includes two annular guide plates 121 and 122, but the present invention is not limited thereto. Three or more guide plates may be installed inside the housing 110'. The arrangement of the guide plates 121 and 122, the gap between them, and their inner and outer radii are similar to those of the embodiment of the present invention. Figures 1 to 4 The guide plates 121 , 122 and 123 shown are substantially the same and thus will not be described in detail.

[0092] Figure 6 for Figure 5 A perspective view of a modified example of the guide plate shown.

[0093] See also Figure 6 , the guide plates 121' and 122' both have an overall annular shape, but each guide plate can be divided into a plurality of parts. Specifically, the first guide plate 121' is composed of three partial annular parts, namely three arc-shaped parts 121a', 121b' and 121c'. That is, the first guide plate 121' is divided into three arc-shaped parts 121a', 121b' and 121c', and the three arc-shaped parts 121a', 121b' and 121c' form an annular shape together inside the housing 110', thereby forming the first guide plate 121' which is annular as a whole. Each of the three arc-shaped parts 121a', 121b' and 121c' can have a central angle of about 120°. Similarly, the second guide plate 122' is also composed of three arc-shaped parts 122a', 122b' and 122c'.

[0094] In the 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 consist of two arc-shaped pieces, in which case the two arc-shaped pieces each have a central angle of approximately 180°. In addition, the guide plates 121' and 122' may each consist of four arc-shaped pieces, in which case the four arc-shaped pieces each have a central angle of approximately 90°.

[0095] The arc-shaped members 121a', 121b' and 121c' of the first guide plate 121' can be fixed to the first guide plate 121' through lugs 125' formed at both ends thereof. Figure 5 The rear wall 112' of the cylindrical housing 110' is shown. On the other hand, the arc-shaped members 121a', 121b' and 121c' can also be formed by Figure 4 The lug 125 shown in FIG. 1 is fixed to Figure 5 The side wall 114' of the housing 110' shown in FIG. The lug 125' and the lug ( Figure 4 125) can be used together, so that the arc-shaped members 121a', 121b' and 121c' are fixed to Figure 5The rear wall 112' and the side wall 114' of the housing 110' are shown in FIG. 44, thereby improving its installation stability. Similarly, the arc-shaped members 122a', 122b' and 122c' of the second guide plate 122' can also be fixedly arranged by the lugs 125' and / or lugs (125 in FIG. 44). Figure 5 The interior of housing 110' is shown.

[0096] The arc-shaped pieces 121a', 121b' and 121c' of the first guide plate 121' may be spaced apart by a predetermined gap G21 in the circumferential direction. Likewise, the arc-shaped pieces 122a', 122b' and 122c' of the second guide plate 122' may be spaced apart by a predetermined gap G22 in the circumferential direction.

[0097] on the other hand, Figure 6 The guide plates 121' and 122' shown have been described as being mounted on Figure 5 The cylindrical housing 110 shown in FIG. 1 is shown in FIG. 1 , but is not limited thereto. For example, Figure 2 The guide plates 121 , 122 and 123 inside the rectangular parallelepiped housing 110 shown may also be composed of a plurality of arc-shaped parts.

[0098] Figure 7 This is an external perspective view of an exhaust device according to a second embodiment of the present invention, showing an example in which the central axis is arranged horizontally. Figure 8 for Figure 7 A vertical cross-sectional view of the exhaust device in the direction of the central axis shown in FIG. Fig. 9 for Figure 7 and Figure 8 A perspective view showing the guide plate separated from the housing.

[0099] See also Figures 7 to 9 According to the second embodiment of the present invention, the exhaust device 200 includes: a shell 210, which includes an air inlet 216 and a plurality of exhaust ports 218 and 219; a guide member 220, which is installed inside the shell 210 and is used to guide the air flowing into the shell 210 through the air inlet 216; and an exhaust pipe 231, which serves as an exhaust member, is directly or indirectly connected to the plurality of exhaust ports 218 and 219, and discharges the air flowing into the shell 210 to the outside of the shell 210 through the plurality of exhaust ports 218 and 219.

[0100] As described above, the basic components of the exhaust device 200 according to the second embodiment of the present invention are substantially the same as those of the exhaust device 100 according to the first embodiment. However, the exhaust device 200 according to the second embodiment of the present invention can operate more efficiently in a case where the exhaust device 200 draws air from a partial angular range in front, rather than the entire range in front, such as a case where an obstacle such as a vertical wall exists near the exhaust device 200 with the central axis C arranged vertically, a case where the exhaust device 200 with the central axis C arranged horizontally draws polluted air generated by a horizontal floor or table, etc.

[0101] Therefore, as described in detail below, there are some differences between the exhaust device 200 according to the second embodiment of the present invention and the exhaust device 100 according to the first embodiment, and these differences will be mainly described below. Therefore, the description of the same features may be omitted or briefly explained.

[0102] The housing 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 to be described later. The housing 210 includes: a front wall 211, which is located on a side where air flows into the interior of the housing 210; a rear wall 212, which faces the front wall 211 at a predetermined distance; and a side wall 214, which is located between the front wall 211 and the rear wall 212. The front wall 211 of the housing 210 is formed with an air inlet 216 through which air flows into the interior of the housing 210, and the rear wall 212 is formed with a plurality of exhaust ports 218 and 219 through which air is exhausted from the housing 210.

[0103] The air inlet 216 may have a substantially semicircular shape, in which respect it is similar to Figure 2 The air inlet 116 shown is different. 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 216a.

[0104] 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 a polygonal shape, an elliptical shape, or a semicircular shape, depending on the positions at which the exhaust ports 218 and 219 are disposed.

[0105] 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 air inlet 216. The plurality of second exhaust ports 219 may be spaced apart from the first exhaust port 218 and appropriately dispersedly disposed on the rear wall 212 of the housing 210.

[0106] Figure 72 shows an example in which the central axis C is arranged horizontally, but the exhaust device 200 is not limited thereto. As described above, in the exhaust device 200, the central axis C may be arranged vertically or inclined at a predetermined angle.

[0107] 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 at least one exhaust pipe 231 through an exhaust box 250 and at least one common exhaust port 258, the exhaust box 250 being combined with the rear portion of the housing 210 and surrounding the plurality of exhaust ports 218 and 219 together, the at least one common exhaust port 258 being formed on the rear wall 252 of the exhaust box 250. The center of the common exhaust port 258 may coincide with the central 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.

[0108] Since the exhaust pipe 231 is the same as the exhaust pipe 131 of the exhaust device 100 according to the first embodiment, its detailed description is omitted.

[0109] The guide member 220 may include a plurality of guide plates, preferably three guide plates 221, 222 and 223, which are installed inside the housing 110 and are used to effectively guide the air flowing into the housing 210 through the air inlet 118, but is not limited thereto. That is, the guide member may include two or four or more guide plates.

[0110] 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, and in a direction of a central axis C from the front wall 211 to the rear wall 212, adjacent guide plates are spaced apart from each other by a predetermined distance, the first guide plate 221 is spaced apart from the front wall 211, and the third guide plate 223 is spaced apart from the rear wall 212.

[0111] 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 device 100 according to the first embodiment of the present invention, and thus will not be described in detail.

[0112] like Fig. 9As shown, the first guide plate 221, the second guide plate 222 and the third guide plate 223 are substantially arc-shaped, and have predetermined widths W1, W2 and W3 in the radial direction around the central axis C, respectively. Specifically, the plurality of guide plates 221, 222 and 223 preferably have an arc shape with a central 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. In this way, the guide plates 221, 222 and 223 are Figure 4 The annular guide plates 121 , 122 and 123 shown are different in that the former is in the shape of an arc.

[0113] The arc-shaped guide plates 221, 222 and 223 are respectively fixed to the side wall 214 of the housing 210, so that they can be fixedly arranged inside the housing 210. To this end, the arc-shaped guide plates 221, 222 and 223 can have lugs 125 for fixing at the outer edges of each end, and can be fixed to the side wall 214 of the housing 210 through the lugs 225.

[0114] The arc-shaped guide plates 221, 222, and 223 are arranged concentrically with the air inlet 216 and the first exhaust port 218. However, the guide plates 221, 222, and 223, the air inlet 216, and the first exhaust port 218 each have different radii. The dimensional relationship between the inner radius of the air inlet 216, the inner radius of the first exhaust port 218, and the inner radius Ri1, Ri2, and Ri3 of each of the guide plates 221, 222, and 223 and the outer radius Ro1, Ro2, and Ro3 is the same as the dimensional relationship between the inner radius Ra of the air inlet 116, the inner radius Rb of the first exhaust port 118, and the inner radius Ri1, Ri2, and Ri3 of each of the guide plates 121, 122, and 123 and the outer radius Ro1, Ro2, and Ro3 of the exhaust device 100 according to the first embodiment, and therefore will not be repeated.

[0115] As described above, in the second embodiment of the present invention, the inner radius of the air inlet 216, the first guide plate 221, the second guide plate 222, the third guide plate 223 and the first exhaust port 218 gradually decreases from the air inlet 216 to the first exhaust port 218, and the air flow channel formed therein also gradually narrows accordingly.

[0116] The operation of the exhaust device 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 device 100 according to the first embodiment described in detail above, and accordingly, the advantages of the exhaust device 200 are the same as those of the exhaust device 100 according to the first embodiment.

[0117] In particular, in the exhaust device 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 arc-shaped, as described above, the exhaust device 200 can operate more efficiently when it draws air from a partial angle range in front rather than the entire range in front, and the case of drawing air from the entire range in front is, for example, a case where there are obstacles such as vertical walls near the exhaust device 200 where the center axis C is vertically set, and a case where the exhaust device 200 where the center axis C is horizontally set draws polluted air generated by a horizontal floor or table, etc.

[0118] On the other hand, the exhaust device 200 may further include an auxiliary guide plate 245 and a side guide plate 246 .

[0119] The auxiliary guide plate 245 extends from the rear wall 212 of the housing 210 to the front wall 211 in a direction parallel to the central axis C. In the example where the auxiliary guide plate 245 is provided, the first exhaust port 218 may not have a circular shape, but may have a semicircular shape corresponding to the air inlet 216, and the auxiliary guide plate 245 may extend horizontally from a position adjacent to the edge of the first exhaust port 218 to the front wall 211. The width of the auxiliary guide plate 245 is greater than the diameter of the first exhaust port 218, but the width is less than or equal to twice the inner radius Ri3 of the third guide plate 223, so that the auxiliary guide plate 245 does not interfere with the third guide plate 223. The auxiliary guide plate 245 plays a role in smoothly guiding the inner airflow Fi flowing into the interior of the housing 210 through the air inlet 216 to the first exhaust port 218.

[0120] The side guide plates 246 extend vertically downward from both side edges of the auxiliary guide plate 245 to the bottom of the housing 210. The side guide plates 246 guide the outer airflow Fo flowing into the housing 210 to the second exhaust ports 219 disposed on both sides of the first exhaust port 218.

[0121] Fig.10 for Figure 7 and Figure 8 A partial perspective view of a modified example of a portion provided with an auxiliary guide plate, Fig.11 for Fig.10 A vertical cross-section of the portion shown.

[0122] See also Fig.10 and Fig.11The 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 a 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.

[0123] The front guide plates 247 and 248 each have a predetermined width 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, and both ends of the front guide plates 247 and 248 in the length direction are fixed to the side guide plates 246. The widths W11 and W12 of the front guide plates 247 and 248 may be the same, but are not limited thereto. The front guide plates 247 and 248 are not only spaced apart from the front end of the auxiliary guide plate 245 and the front wall 211, but are also spaced apart from each other by a predetermined distance. That is, the first front guide plate 247 is disposed in parallel with the front wall 211 and is spaced apart from the front wall 211 by a predetermined first gap G11, and the second front guide plate 248 is disposed in parallel with the first front guide plate 247 and is spaced apart from the first front guide plate 247 by a predetermined second gap G12. In addition, a predetermined third gap G13 is provided between the second front guide plate 248 and the end of the auxiliary guide plate.

[0124] 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 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 have 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 their upper ends are set.

[0125] 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 216 b 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 .

[0126] The widths W11 and W12, gaps G11, G12 and G13, and setting heights of the front guide plates 247 and 248 may be set to values ​​showing optimal airflow through multiple experiments according to the exhaust capacity required for the exhaust device 200 and / or the size of the housing 210.

[0127] like Fig.11As shown, the front guide plates 247 and 248 not only play the role of smoothly guiding the outer airflow Fo flowing from the lower front part of the front wall 211 of the shell 210 over the straight portion 216b of the air inlet 216 into the interior of the shell 210 to the second exhaust port 219 arranged at the lower part of the rear wall 212, but also play the role of more smoothly guiding the inner airflow Fi toward the first exhaust port 218.

[0128] Fig.12 for Figure 7 and Figure 8 A partial perspective view of another modified example of a portion provided with an auxiliary guide plate is shown.

[0129] See also Fig.12 The auxiliary guide plate 245 extends from the rear wall 212 of the housing 210 to the front wall 211, but does not extend to the front wall 211, and is spaced a predetermined distance from the front wall 211. Figures 7 to 11 Compared with the embodiment shown in FIG. 1 , the auxiliary guide plate 245 is slightly moved toward the bottom of the housing 210 to further expand the area of ​​the first exhaust port 218. Accordingly, the first exhaust port 218 may not have a Figures 7 to 11 The semicircular shape shown, but has Fig.12 The shape shown is between the semicircle and the perfect circle, or has a perfect circle shape.

[0130] Further, a front guide plate 249 extending vertically upward from the end portion may be provided at the front end of the auxiliary guide plate 245, that is, at the end portion on the air inlet 216 side. The front guide plate 249 is fixed to the end portion 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 portion 216b of the air inlet 216 formed on the front wall 211.

[0131] A portion of the airflow flowing into the interior of the shell 210 from the lower front part of the front wall 211 of the shell 210 over the straight portion 216b of the air inlet 216 passes through the gap G21 between the front guide plate 249 and the front wall 211 and is guided to the second exhaust port 219 arranged below the rear wall 212 of the shell 210.

[0132] Side guide plates 261 extending vertically upward from the auxiliary guide plates 245 may be provided on both side edges thereof. The front guide plate 249 may be provided between the side guide plates 261. Figure 7Unlike the side guide plate 246 shown in the figure, the side guide plate 261 plays a role in smoothly guiding the inner airflow Fi flowing into the interior of the housing 210 to the first exhaust port 218. The height of the upper end of the side guide plate 261 may be higher than the height 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.

[0133] The side guide plate 261 may extend from the rear wall 212 of the housing 210 to the front wall 211, and the 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 shielding plate 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 shielding plate 263 plays a role in making the air flow smooth near the corner where the arc portion 216a and the straight portion 216b of the semicircular air inlet 216 intersect.

[0134] The side guide plate 261 and the front guide plate 249 can 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 can be equal to or higher than the height of the front guide plate 249.

[0135] Fig.13 This is an external perspective view of an exhaust device according to a third embodiment of the present invention, showing an example in which the central axis is arranged horizontally. Fig.14 for Fig.13 A rear perspective view of the exhaust device shown, Fig.15 for Fig.13 A vertical cross-sectional view of the exhaust device in the direction of the central axis shown in FIG. Fig.16 For use Fig.13 The exhaust device shown is a schematic diagram of an example of a guide grid forming device.

[0136] See also Figures 13 to 16 According to the third embodiment of the present invention, the exhaust device 300 includes: a shell 310, which includes an air inlet 216 and a plurality of exhaust ports 318 and 319; a guide member 320, which is installed inside the shell 310 and is used to guide the air flowing into the shell 310 through the air inlet 216; and an exhaust member, which is directly or indirectly connected to the plurality of exhaust ports 318 and 319 and discharges the air flowing into the shell 310 to the outside of the shell 210 through the plurality of exhaust ports 318 and 319.

[0137] As described above, the basic components of the exhaust device 200 according to the second embodiment of the present invention are substantially the same as the basic components of the exhaust device 200 according to the second embodiment. Figures 13 to 15 Components identical to those of the exhaust device 200 according to the second embodiment of the present invention are labeled with the same reference numerals. However, as described in detail below, there are some differences between the exhaust device 300 according to the third embodiment of the present invention and the exhaust device 200 according to the second embodiment, and these differences will be mainly described below. Therefore, the description of the same features may be omitted or briefly explained.

[0138] Similar to the above-mentioned embodiment, the exhaust device 300 according to the third embodiment of the present invention includes an exhaust box 350, which is combined with the rear of the housing 310 and surrounds a plurality of exhaust ports 318 and 319 together, and the height H2 of the exhaust box 350 is lower than the height H1 of the housing 310. Therefore, a step is formed between one side wall 314 of the housing 310 and its corresponding side wall 354, that is, one side wall 354 of the exhaust box 350 facing the same direction.

[0139] In the exhaust box 350, at least one, preferably two common exhaust ports 358 may be formed on one of the side walls 354 of the exhaust box 350 instead of the rear wall 352 of the exhaust box 352, the side wall 354 being the side wall 354 forming a step between the corresponding side walls 314 of the housing 310. In each common exhaust port 358, an exhaust fan 331 may be provided instead of an exhaust pipe ( Figure 7 231) as the exhaust member. Therefore, Fig.15 As shown, the air flowing into the exhaust box 350 from the housing 310 through the plurality of exhaust ports 318 and 319, i.e., the inner airflow Fi flowing into the exhaust box 350 through the first exhaust port 218 and the outer airflow Fo flowing into the exhaust box 350 through the second exhaust port 219, is discharged to the outside through the common exhaust port 358 and the exhaust fan 331. In addition, for example, the air inside the exhaust box 350 is discharged from the exhaust box 350 in a direction substantially perpendicular to the air inflow direction rather than in a direction parallel to the air inflow direction.

[0140] In addition, the exhaust device 300 according to the third embodiment of the present invention further includes at least one, preferably two additional exhaust ports 371, which are formed on one of the side walls 314 of the shell 310, that is, formed on the side wall 310 of the shell 310 corresponding to the side wall 354 of the exhaust box 359 on which the common exhaust port 358 is formed. An exhaust fan 332 may be provided in each of the additional exhaust ports 371 to discharge a portion of the air flowing into the shell 310 to the outside. Fig.15As shown, a portion of the outside airflow Fo that flows into the interior of the housing 310 through the air inlet 216 and is guided by the plurality of guide plates 221, 222, and 223 flows into the interior of the exhaust box 350 through the second exhaust port 219, but the remaining portion is discharged to the outside of the housing 310 through the additional exhaust port 371 and the exhaust fan 332. Therefore, the air that flows into the interior of the housing 310 and is discharged through the additional exhaust port 371 is discharged from the housing 310 in a direction substantially perpendicular to the direction of the air flowing into the interior of the housing 310, rather than in a direction parallel to the direction of the air flowing into the interior of the housing 310.

[0141] Figures 10 to 12 The modified examples shown can also be applied to the exhaust device 300 of the third embodiment of the present invention having the above-mentioned structure.

[0142] The exhaust device 300 may be used as a device for forming an air fence, such as Fig.16 shown.

[0143] More specifically, the exhaust device 300 may be arranged with its central axis perpendicular to the entrance of the ceiling CE of the work space WS where polluted air is generated. In addition, the exhaust device 200 according to the second embodiment of the present invention may be arranged beside the exhaust device 300 and closer to the inside of the work space WS than the exhaust device 300, that is, between the exhaust device 300 and the inner wall SW of the work space WS. On the other hand, Fig.16 2 and 300 are shown installed one by one, but according to the inlet width of the workspace WS, a plurality of exhaust devices 200 and a plurality of exhaust devices 300 can be arranged side by side in a row. In addition, the exhaust device 100 according to the first embodiment can also be installed instead of the exhaust device 200 according to the second embodiment of the present invention.

[0144] As described above, in the exhaust device 300, the flow direction of the air flowing into the exhaust device 300 is substantially at right angles to the flow direction of the air discharged from the exhaust device 300. Fig.16 As shown, a circulating airflow can be formed in front of the workspace WS, which is mainly composed of clean air outside the workspace WS rather than polluted air inside the workspace WS, and forms a guide grid Fa that blocks the inside and outside of the workspace WS. This guide grid Fa can prevent the polluted air inside the workspace WS from escaping to the outside of the workspace WS. In addition, the guide grid Fa can prevent the air outside the workspace WS from flowing into the workspace WS, thereby improving the exhaust efficiency of the exhaust device 200. The polluted air flowing into the exhaust device 200 is discharged through the exhaust pipe 231.

[0145] Fig.17 for Fig.13A perspective view of a modified example of the exhaust device shown.

[0146] Fig.17 The exhaust device 300' is shown with Figures 13 to 15 The difference of the exhaust device 300 shown is 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 formed separately, but an integrated exhaust port 372 integrating the common exhaust port and the additional exhaust port is formed.

[0147] Specifically, the height H2 of the exhaust box 350' of the exhaust device 300' is equal to the height H1 of the housing 310. Therefore, the side wall 314 of the housing 310 and the side wall 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, preferably two, integrated exhaust ports 372 spanning the housing 310 and the exhaust box 350'. In addition, each of the integrated exhaust ports 372 is provided with an exhaust fan 333 as an exhaust member.

[0148] According to the above structure, a portion of the outer air flow Fo that flows into the interior of the shell 310 through the air inlet 216 and is guided by multiple guide plates 221, 222 and 223 is discharged to the outside of the shell 310 through the integrated exhaust port 372 and the exhaust fan 333 formed on the side wall 314 of the shell 310, and the air that flows into the interior of the exhaust box 350 from the shell 310 through the multiple exhaust ports 318 and 319 is discharged to the outside of the exhaust box 350' through the integrated exhaust port 372 and the exhaust fan 333 formed on the side wall 354' of the exhaust box 350'.

[0149] Figures 10 to 12 The modified example shown can also be applied to the exhaust device 300 ′ having the above-mentioned structure.

[0150] As mentioned above, Fig.17 The exhaust device 300' shown is relative to Figures 13 to 16 An advantage of the exhaust device 300 shown is that the number of exhaust ports is reduced, and thus the number of exhaust fans is also reduced.

[0151] The present invention has been described with reference to the embodiments shown in the accompanying drawings, but these are only examples, and those skilled in the art will appreciate that various modifications and other equivalent embodiments may be obtained. Therefore, the true scope of the present invention should be determined by the appended claims.

Claims

1. An exhaust device, characterized in that: include: 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 member installed inside the housing and used for guiding the air flowing into the housing through the air inlet; as well as 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 among the plurality of guide plates which is closest to the rear wall of the housing.

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.

Images