JP2008281238A - Supply and exhaust device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically clean a filter with a simple constitution. <P>SOLUTION: This supply and exhaust device for sucking the air through an intake duct 15 by rotation of a fan, and exhausting the sucked air through an exhaust duct 16 partially adjacent to the intake duct 15, comprises the filter 53 disposed on an adjacent part of the intake duct 15 and the exhaust duct 16 for capturing dust in the air sucked by the intake duct 15, and a rotating plate 52 moving the filter 53 capturing the dust, from the intake duct 15 to an exhaust duct 16 side and removing the dust of the filter 53 by exhaust dynamic pressure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an air supply / exhaust device provided in an indoor unit of an air conditioner, for example.

  This type of air supply / exhaust device includes an intake path and an exhaust path, and there is an apparatus that sucks outside air through the intake path by rotation of a fan and exhausts indoor air through the exhaust path. In addition, the outdoor opening side of the intake path is blocked by a filter to prevent entry of dust (including insects) from outside.

  By the way, if the air supply / exhaust operation is continued, dust is accumulated in the filter and the intake air amount decreases, so that good air supply / exhaust cannot be expected. Therefore, the filter needs to be periodically cleaned.

Therefore, conventionally, an intake path and an exhaust path are switched to flow an exhaust flow to the filter side where dust is accumulated, and dust is blown off by the exhaust dynamic pressure to be removed (see, for example, Patent Document 1). ).
Japanese Patent Application Laid-Open No. 11-294821

  However, conventionally, the intake path and the exhaust path are branched into a plurality of parts, and the connection of these branch paths is switched by the operation of a plurality of open / close dampers, so that the exhaust flow is guided to the filter and the dust is blown away. However, it has become complicated and expensive, and maintenance is also troublesome.

  The present invention has been made paying attention to the above circumstances, and an object thereof is to provide an air supply / exhaust device that can automatically clean a filter with a simple configuration.

  In order to solve the above-mentioned problems, according to the first aspect of the present invention, air is sucked in through an intake duct by rotation of a fan, and the sucked air is exhausted through an exhaust duct adjacent to the intake duct. In the air supply / exhaust device, a filter that is provided in the intake duct and an adjacent portion of the exhaust duct and captures dust in the air sucked by the intake duct, and a filter that captures the dust from the intake duct to the exhaust duct. Moving means for moving the filter to the side to remove dust from the filter by the exhaust dynamic pressure.

  According to the present invention, dust can be removed simply by moving the filter, the structure can be simplified to reduce the cost, and maintenance is facilitated.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
(First embodiment)
1 to 3 show an indoor unit 1 of an air conditioner according to a first embodiment of the present invention.

  The indoor unit 1 has an indoor unit main body 3, and the indoor unit main body 3 is attached to the inner surface of the wall 2 that partitions the room from the outdoor. A plurality of suction ports 4 are formed in the front surface portion and the upper surface portion of the indoor unit body 3. A blower outlet 6 whose opening degree can be adjusted by a louver 5 is formed in the lower part of the indoor unit body 3.

  In the indoor unit body 3, an air filter 7, a filter cleaning device 8 that removes dust adhering to the air filter, a heat exchanger 9, a cross flow fan 10, an intake / exhaust fan 11, an adsorbent 12, A drain pan 13 and a controller 14 are provided.

  An intake duct 15, an exhaust duct 16, and two refrigerant pipes 17 and 18 are piped through the wall 2 between the indoor unit body 3 and the outside. FIG. 2 is a schematic view for understanding the air flow in each component, and is slightly different from the actual arrangement of each component in the indoor unit body 3.

  The air filter 7 is disposed at a position facing the suction port 4 between the front surface portion and the upper surface portion of the indoor unit body 3 and is formed in a mesh shape. When dust is contained in the air sucked from the suction port 4, the dust is captured by the air filter 7 in the process of passing this air filter 7.

  The heat exchanger 9 is connected to an outdoor heat exchanger of an outdoor unit (not shown) installed outdoors via two refrigerant pipes 17 and 18, and the refrigerant flows into the interior to perform cooling operation. It is provided to be switchable between a state and a heating operation state. The heat exchanger 9 cools the air flowing around the heat exchanger 9 at a low temperature during the cooling operation, and heats the air flowing around the heat exchanger 9 at a high temperature during the heating operation.

  The cross-flow fan 10 is a cross-flow fan formed in a long cylindrical shape, and is installed in parallel with the longitudinal direction of the adsorbent 12 along the longitudinal direction in the indoor unit main body 3. That is, when the indoor unit 1 is attached to the wall 2, the cross flow fan 10 installed in the indoor unit body 3 is oriented in a horizontal direction in which the longitudinal direction of the cross flow fan 10 is parallel to the wall 2. . A motor 19 that rotates the cross flow fan 10 is connected to the cross flow fan 10. When the crossflow fan 10 is driven, indoor air is sucked into the indoor unit body 3 from the suction port 4, and the sucked air is cooled by passing through the periphery of the heat exchanger 9 to become cold air, or It is heated and becomes warm air, and cold air or warm air blows out into the room from the outlet 6.

  The intake / exhaust fan 11 is connected to a motor 20 that rotationally drives the intake / exhaust fan 11. When the intake / exhaust fan 11 is rotationally driven, outdoor air is sucked into the indoor unit body 3 and the sucked air is discharged to the outdoor.

  Intake of air from the outside is performed using an intake duct 15 that is piped through the wall 2 between the indoor unit body 3 and the outdoor. The air is exhausted to the outside through an exhaust duct 16 piped through the wall 2 between the indoor unit body 3 and the outdoor.

  The intake duct 15 takes in air supplied to the adsorbent body 12 from outside the room. The adsorbent 12 has a function of adsorbing moisture in the air and then desorbing the adsorbed moisture into the air by increasing the temperature. As shown in FIGS. 4 and 5, the adsorption body 12 includes an adsorption plate unit 21 and a holding body 22.

  The adsorbing plate unit 21 has a plurality of adsorbing plates 23 that are formed in a rectangular plate shape and can adsorb and desorb moisture, and these adsorbing plates 23 face each other and face each other. It is connected with a gap that allows ventilation between the surface and the surface. The adsorption plate 23 is formed of a substrate made of paper or the like and adsorbent particles such as zeolite coated on the surface of the substrate. The adsorbent adsorbs moisture at a low temperature (outside temperature) and desorbs the adsorbed moisture at a high temperature.

  The plurality of suction plates 23 are connected by fixing both ends in the longitudinal direction of the suction plates 23 with ring-shaped frames 24, and the outer shape of the suction plate unit 21 is a columnar shape. A partition plate 25 arranged in parallel with the suction plate 23 is fixed to the ring-shaped frame 24. Both ends of the partition plate 25 are fixed to the diameter portions of the pair of ring-shaped frames 24, and the suction plate 23 is divided into two groups and serves as reinforcement of the suction plate unit 21.

  A rotation shaft 26 extending outward along the longitudinal direction of the partition plate 25 is fixed to the center of the side surface in the longitudinal direction of the partition plate 25.

  The holding body 22 holds the suction plate unit 21 so as to be rotatable around the center line of the rotation shaft 26 in the holding body 22. The holding body 22 includes a first cover portion 27 that hermetically covers an outer peripheral portion in a direction along the longitudinal direction of a part of the suction plates 23 in the suction plate unit 21 to be held, and another part of the suction plate unit 21 to be held. The suction plate 23 has a pair of second cover portions 28 that hermetically cover both ends in the longitudinal direction. The first cover portion 27 is formed in a semi-cylindrical shape that covers a range of about 180 degrees in the circumferential direction of the suction plate unit 21. The second cover part 28 is formed in a semicircular shape. The second cover portion 28 is formed with a support hole 29 that rotatably supports the rotary shaft 26.

  The adsorbent 12 is formed with a first air passage 30 and a second air passage 31 through which air can flow. The first air passage 30 is formed by being surrounded by the first cover portion 27 and a part of the suction plates 23, and air can be passed between the suction plates 23 in the longitudinal direction (direction of arrow A shown in FIG. 4). It is said that. The second air passage 31 is formed by being surrounded by the pair of second cover portions 28 and another part of the suction plates 23, and a direction perpendicular to the longitudinal direction of the suction plates 23 (see FIG. 4 and the direction of arrow B shown in FIG. 1). The partition plate 25 is positioned between the first air passage 30 and the second air passage 31 so that air does not travel between the first air passage 30 and the second air passage 31. I have to.

  As shown in FIG. 2, when the adsorbing body 12 is installed in the indoor unit body 3, the holding body 22 is held by a holding mechanism (not shown), and the adsorbing plate unit 21 is attached to the rotating shaft 26 with the center line of the rotating shaft 26. A motor 32 that is driven to rotate around is connected via a speed reduction mechanism 33. The speed reduction mechanism 33 is configured by meshing a plurality of gears.

  As shown in FIG. 1, the drain pan 13 is a dish-shaped member that receives drain water generated in the heat exchanger 9 during cooling operation, and is formed in a long shape along the center line direction of the cross-flow fan 10. It is arranged below the heat exchanger 9.

  As described above, the intake duct 15 passes through the wall 2 and is piped between the inside of the indoor unit body 3 and the outside, and the outdoor air is supplied to the adsorbent body 12 through this duct 15.

  One end of the intake duct 15 located in the indoor unit main body 3 is connected to one end side in the longitudinal direction of the drain pan 13. As shown in FIG. 6, this connection is performed by the intake duct 15 passing through the bottom surface of the drain pan 13 and being fixed and held on the drain pan 13.

  The front end side of the intake duct 15 penetrating the bottom surface of the drain pan 13 protrudes upward from the bottom surface of the drain pan 13. A passage 35 that guides air sucked from the outside to the first air passage 30 of the adsorbent 12 is connected to the tip of the intake duct 15 protruding upward from the bottom surface of the drain pan 13. The passage 35 extends toward the adsorbent body 12, and a tip portion thereof is connected to an inlet 30 </ b> A (see FIG. 2) on one end side of the first air passage 30 of the adsorbent body 12.

  An exhaust duct 16 is fixed and held at the other end of the drain pan 13 in the longitudinal direction. As shown in FIG. 6, this holding is performed by passing the exhaust duct 16 through a through hole 61 surrounded by a cylindrical rising portion 60 provided on the bottom surface of the drain pan 13.

  An end portion of the exhaust duct 16 located in the indoor unit main body 3 is connected to an outlet 30 </ b> B (see FIG. 2) of the first air passage 30 of the adsorbent 12.

  By the way, the edge part located in the outdoor which penetrated the wall 2 of the above-mentioned intake duct 15 and exhaust duct 16 is adjoined as shown in FIGS. 1-3, and the filter apparatus 51 in the state which opposes this adjacent edge part side. Is provided. As shown in an exploded view in FIG. 7, the filter device 51 includes a rotating plate 52 as a circular rotating body. A pair of circular openings 52a and 52b are formed in the rotating plate 52, and a mesh-like filter 53 is attached to one of the openings 52a and 52b. The filter 53 is normally positioned so as to close the opening end of the intake duct 15.

  A drive shaft 55a of the drive motor 55 is connected and fixed to the central portion of the rotary plate 52, and the rotary plate 52 is rotated 180 degrees periodically, for example, every 10 days, by the drive of the drive motor 55. By this rotation, the filter 53 is opposed to the opening end side of the exhaust duct 16, and after this opposition, the intake / exhaust fan 11 is operated for a predetermined time, and thereafter, the intake / exhaust fan 11 is stopped, and the rotating plate 52 is rotated 180 degrees again. The filter 53 is rotated and moved to an initial position, that is, a position facing the opening end side of the intake duct 15.

  In addition, a cleaning brush 56 is provided in the front part on the opening end side of the exhaust duct 16, and when the filter 53 moves from the opening end side of the exhaust duct 16 to the opening end side of the intake duct 15, the cleaning brush 56 is provided. It comes to be in sliding contact with.

  On the other hand, the controller 14 described above controls a control object in the indoor unit body 3.

  As shown in FIG. 8, the controller 14 includes a motor 32 that rotationally drives the suction plate unit 21 of the adsorption body 12, a motor 20 that rotationally drives the intake / exhaust fan 11, and a motor 19 that rotationally drives the cross-flow fan 10. Infrared signals are received from a motor 45 for driving the louver 5, a motor 55 for rotating the rotating plate 52, various sensors such as a temperature sensor, and a remote controller 46 for operating the operating state of the air conditioner. A light receiving unit 47 is connected. Various buttons (cooling, heating, humidification, operation / stop, set temperature, air volume, etc.) operated by the user are arranged on the remote control 46, and when each button operation is performed, an infrared ray corresponding to each operation content is provided. A signal is output.

Next, the operation of the indoor unit 1 during the humidifying operation will be described.
When the humidification start signal is input from the remote controller 46, the controller 14 starts the humidification operation by driving the intake / exhaust fan 11 and sucking outdoor air through the intake duct 15. The outdoor air sucked from the intake duct 15 is sucked through the filter 53, and the dust is captured and removed by the filter 53, thereby preventing entry into the interior. The outdoor air from which dust has been removed flows through the intake duct 15 and the passage 35 toward the adsorbent 12. This air flows into the first air passage 30 of the adsorbent body 12 from the inlet 30 </ b> A of the adsorbent body 12. In the process in which the air flows through the first air passage 30 of the adsorbent body 12, moisture in the outdoor air is adsorbed by the adsorption plate 23 located in the first air passage 30. The air that has passed through the first air passage 30 is reduced in humidity by moisture adsorbed on the adsorption plate 23, and is exhausted to the outside through the exhaust duct 16 in a state where the humidity is reduced.

  During this humidification operation, the motor 32 is driven at a preset time, and the suction plate unit 21 rotates about 180 degrees around the rotation shaft 26. By this rotation, the adsorption plate 23 that is located in the first air passage 30 and has been adsorbed with water before the rotation moves into the second air passage 31, and in the second air passage 31 before the rotation. The suction plate 23 that has been positioned moves into the first air passage 30. The humidification operation is performed during wintering when the heating operation is performed, and a part of the warm air heated by the heat exchanger 9 flows in the second air passage 31 in the direction indicated by the arrow B in FIG. .

  As a result, the adsorption plate 23 located in the second air passage 31 is heated, moisture is desorbed from the adsorption plate 23, and the desorbed moisture is sucked into the heat exchanger 9 side by the cross flow fan 10. It blows out into the room from the blower outlet 6, and the room is humidified.

  By the way, if the above-described humidification operation is continued, dust is accumulated in the filter 53 that closes the opening end of the intake duct 15, and the intake amount of the outdoor air is reduced to reduce the humidification amount. For this reason, the filter 53 is periodically cleaned to remove the dust.

  Next, the cleaning operation of the filter 53 will be described.

  In this case, the rotating plate 52 is rotated 180 degrees by the motor 55. By this rotation, the filter 53 of the rotating plate 52 moves from the opening end side of the intake duct 15 toward the opening end side of the exhaust duct 16 and faces the opening end of the exhaust duct 16. That is, when the filter 53 is positioned on the opening end side of the intake duct 15, the surface of the filter that is on the suction side is positioned on the outlet side when the filter 53 is positioned on the opening end side of the exhaust duct 16. become. At this time, the intake / exhaust fan 11 is operated, air is exhausted from the open end of the exhaust duct 16, and dust in the filter 53 is located downstream of the open end of the exhaust duct 16. To be removed. After the dust is removed, the intake / exhaust fan 11 is stopped, the rotary plate 52 is rotated again by 180 degrees by the motor 55, and the filter 53 is directed from the open end side of the exhaust duct 16 toward the open end side of the intake duct 15. It moves and opposes so that the opening end of the intake duct 15 may be obstruct | occluded. As a result, the outdoor air sucked from the intake duct 15 is again sucked through the filter 53, and dust is captured and removed.

  Further, when the filter 53 moves from the opening end side of the exhaust duct 16 toward the opening end side of the intake duct 15, the surface of the filter 53 is brought into sliding contact with the cleaning brush 56. Therefore, even if some dust remains on the filter 53, the residual dust can be removed by the cleaning brush 56, and more reliable cleaning is possible.

  As described above, according to the first embodiment, the filter 53 can be cleaned only by rotating the rotating plate 52, and the intake path and the exhaust path that are branched into a plurality of parts as in the prior art are provided. Compared with the case where cleaning is performed by switching by a damper switching operation, there is an advantage that the configuration can be simplified.

  The filter cleaning device 8 removes dust adhering to the surface of the air filter 7 using a brush (not shown), and the removed dust passes through the exhaust duct 16 from the filter cleaning device 8 by the operation of the intake / exhaust fan 11. Exhausted to the outside. In the first embodiment, dust adhering to the surface of the air filter 7 must be exhausted to the outside through the exhaust duct 16, so that only one of the openings 52a and 52b of the rotating plate 52 is used. Although the filter 53 is provided, if the dust of the air filter 7 is not exhausted, the filter 53 may be provided in both of the openings 52a and 52b of the rotating plate 52.

  According to this, when the rotating plate 52 is rotated 180 degrees and one filter 53 is moved from the opening end side of the intake duct 15 to the opening end side of the exhaust duct 16, the other filter 53 opens the opening of the exhaust duct 16. Since it moves from the end side to the opening end side of the intake duct 15, there is an advantage that dust in the outdoor air sucked from the intake duct 15 can be removed by the other filter 53 even when the filter 53 is cleaned.

(Second Embodiment)
FIG. 9 shows an indoor unit 101 of an air conditioner that is a second embodiment of the present invention. The indoor unit 101 of the air conditioner includes a supply / exhaust device 110 that functions as a ventilation device that sucks indoor air into the interior and exhausts the air outside.

  This indoor unit 101 has an indoor unit main body 103 that is attached to the inner surface of a wall 102 that partitions the room from the outside, and a plurality of suction ports 104 are formed on the front surface and the upper surface of the indoor unit main body 103. Yes. An air outlet 106 whose opening degree can be adjusted by a louver 105 is formed in the lower part of the indoor unit main body 103.

  In the indoor unit main body 103, an air filter 107, a heat exchanger 108, and an air conditioning fan 109 are arranged.

  The air filter 107 is disposed inside the front surface portion and the upper surface portion of the indoor unit main body 103, and is formed in a mesh shape. In the case where dust is contained in the air sucked into the indoor unit main body 103 from the suction port 104, the dust is collected by the air filter 107 while the air passes through the air filter 107.

  The heat exchanger 8 is connected to a heat exchanger provided in an outdoor unit (not shown) disposed outside, and the refrigerant flows through the heat exchanger 8 so as to be switched between a cooling operation and a heating operation. ing. The air flowing around the heat exchanger 108 is cooled during the cooling operation, and the air flowing around the heat exchanger 108 is heated during the heating operation.

  The air-conditioning fan 109 is a cross-flow (cross-flow) fan formed in a long shape, and a motor (not shown) is connected to one end of the fan and is rotationally driven by this motor. When the air conditioning fan 109 is driven, indoor air is sucked from the suction port 104, and the sucked air passes through the heat exchanger 108 and is blown out from the blower outlet 106. The air blown out from the air outlet 106 is cooled by flowing through the cold heat exchanger 108 during cooling operation and becomes cold air, and is heated and heated by flowing through the warm heat exchanger 108 during heating operation.

  Incidentally, an air supply / exhaust device 110 according to the present invention is provided on one lower side in the indoor unit main body 103 as shown in FIG.

  The air supply / exhaust device 110 includes an exhaust fan 112 and a fan casing 113 that houses the exhaust fan 112. A fan motor 114 is connected to the exhaust fan 112. One end of the intake duct 115 is connected to the suction side of the fan casing 113, and one end of the exhaust duct 116 is connected to the discharge side.

  The other end portion side of the intake duct 115 is opened into the room from the side surface portion of the indoor unit main body 103. The other end side of the exhaust duct 116 extends from the interior of the indoor unit main body 103 through the wall 102 to the outside.

  A midway portion of the intake duct 115 and the exhaust duct 116 is adjacent to each other, and a filter device 117 is provided so as to cross the midway portion. As shown in FIG. 11, the filter device 117 includes a rotating plate 118. A gear 119 is formed on the outer peripheral surface of the rotating plate 118, and a driving gear 120 is engaged with the gear 119. A motor shaft 121 a of a motor 121 is connected to the drive gear 120.

  A pair of circular openings 118a and 118b are formed in the plate surface of the rotating plate 118, and a mesh-like filter 123 is attached to one of these openings 118a and 118b. The filter 123 is normally positioned so as to partition the intake duct 115, and is moved to a position where the exhaust duct 116 is partitioned by rotating the rotating plate 118 from this state by 180 degrees.

  Next, the indoor air exhausting operation will be described.

  In this case, the exhaust motor 112 is driven and rotated by the fan motor 114, and the indoor air is sucked from the intake duct 115. The sucked room air passes through the filter 123 to remove dust. After this removal, the room air is sucked into the exhaust fan 112 and then exhausted to the outside through the exhaust duct 116. If this air supply / exhaustion continues, dust accumulates in the filter 123 and the air supply / exhaust flow rate decreases. Therefore, it is necessary to periodically clean the filter 123 to remove the dust.

  Next, the cleaning operation of the filter 123 will be described.

  In this case, the drive gear 120 is rotated by the rotation of the motor 121, and the rotation plate 118 is rotated 180 degrees by the rotation of the drive gear 120. With this rotation, the filter 123 moves from the intake duct 115 toward the exhaust duct 116 and is positioned so as to partition the exhaust duct 116. At this time, since dust is located on the downstream side of the filter 123, the indoor air flowing in the exhaust duct 116 passes through the filter 123 and is blown off by the exhaust dynamic pressure and removed. After this removal, the rotating plate 118 is rotated 180 degrees again by the rotation of the drive gear 120 and moves from the exhaust duct 116 toward the intake duct 115, and is positioned so as to partition the intake duct 115. Thereby, the dust in the indoor air sucked from the intake duct 115 is removed again by the filter 123.

  Also according to the second embodiment, the same effects as those of the first embodiment described above can be obtained.

  In the second embodiment, the filter 123 is provided in only one of the openings 118a and 118b of the rotating plate 118. However, the present invention is not limited to this, and both of the openings 118a and 118b of the rotating plate 118 are provided. Each may be provided with a filter 123.

  According to this, when the rotating plate 118 is rotated 180 degrees and one filter 123 is moved from the intake duct 115 to the exhaust duct 116, the other filter 123 is moved from the exhaust duct 116 to the intake duct 115. Since the duct 115 is partitioned, there is an advantage that dust or the like in outdoor air sucked from the intake duct 15 by the other filter 123 can be removed even when the filter 123 is cleaned.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments. For example, you may delete some components from all the components shown by embodiment mentioned above. Furthermore, you may combine the component covering different embodiment suitably.

The side sectional view showing the indoor unit of the air harmony machine which is the 1st embodiment of the present invention. Fig. 2 is a plan sectional view showing the indoor unit of Fig. 1. The perspective view which shows the internal structure of the indoor unit of FIG. The perspective view which shows the moisture absorption body provided in the indoor unit of FIG. The perspective view which decomposes | disassembles and shows the moisture absorption body of FIG. FIG. 6 is a diagram illustrating an intake duct that sends outdoor air to the hygroscopic body of FIG. 5 and an exhaust duct that exhausts outdoor air that has passed through the hygroscopic body. The disassembled perspective view which shows the filter apparatus which removes dust from the outdoor air inhaled from the air intake duct of FIG. The block diagram which shows the electrical connection structure of the indoor unit of FIG. The sectional side view which shows the indoor unit of the air conditioner which is the 2nd Embodiment of this invention. FIG. 10 is a cross-sectional plan view illustrating a part of the indoor unit in FIG. 9. The figure which shows the filter apparatus provided in the air supply / exhaust apparatus of the indoor unit of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11, 112 ... Fan, 15, 115 ... Intake duct, 16, 116 ... Exhaust duct, 52, 118 ... Rotating plate (moving means), 53, 123 ... Filter, 56 ... Cleaning brush.

Claims (3)

In the air supply / exhaust device for sucking air through the intake duct by rotation of the fan, and exhausting the intake air through the exhaust duct adjacent to the intake duct,
A filter that is provided in an adjacent portion of the intake duct and the exhaust duct and captures dust in the air sucked by the intake duct;
Moving means for moving the filter that has captured the dust from the intake duct to the exhaust duct side to remove the dust of the filter by exhaust dynamic pressure;
An air supply / exhaust device comprising:   2. The moving means includes a rotating body, the rotating body includes the filter, and the filter is moved between the intake duct and the exhaust duct by the rotation of the rotating body. Air supply and exhaust system.   The air supply / exhaust device according to claim 2, further comprising a cleaning brush that brushes the filter when the filter moves from the exhaust duct to the intake duct by the rotation of the rotating body.

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