JP5283601B2 - Outside air treatment air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outside air treating air conditioner excelling in maintainability and extending a damper mechanism in the height direction and removing the damper mechanism by shortening the height of the damper mechanism. <P>SOLUTION: The outside air treating air conditioner 10 includes, in a casing 11: a total heat exchanging element 31 exchanging heat between outside air and inside air; an introduction line for introducing outside air indoors through a total heat exchanger; an exhaust line 34 exhausting inside air outdoors through the total heat exchanging element 31; a by-pass line 39 by-passing the total heat exchanger to exhaust inside air outdoors; and a damper unit 80 alternatively switching the by-pass line 39 and the exhaust line 34. The damper unit 80 includes a plurality of damper plates divided in the height direction of the casing 11 and screw-fastened to each other, and an upper support shaft 83 and a lower support shaft 84 fitted to a receiving part on the casing 11 side are mounted to an upper part of the upper damper plate 81a and to the lower part of the lower damper plate 81b. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an outside air processing air conditioner that regulates outside air and supplies it indoors.

  In general, an outside air processing air conditioner that includes a total heat exchange element for exchanging heat between outside air and inside air in a housing and supplies the outside air adjusted by the total heat exchange element indoors is known (for example, Patent Document 1). In this type of outside air treatment device, an introduction path for introducing outside air into the inside of the enclosure via a total heat exchange element, a discharge path for discharging inside air outdoors via a total heat exchange element, and a total heat of inside air outdoors. A bypass path for discharging the exchange element by bypass is formed, and a damper mechanism is provided for selectively switching the bypass path and the discharge path.

JP 2002-323247 A

By the way, since the outside air processing air conditioner is generally disposed in the ceiling space, it is difficult to secure a working space for removing the top plate of the casing in the ceiling space.
On the other hand, the damper mechanism includes a damper plate that closes one of the paths and opens the other, and rotates the damper plate to switch the path through which the inside air flows. This damper plate is provided by making the most of the space in the height direction of the housing in order to ensure a sufficient exhaust flow rate. For this reason, it is difficult to remove the damper mechanism from the housing, and there is a problem that it is difficult to perform maintenance of the damper mechanism.
This invention is made | formed in view of the situation mentioned above, and aims at providing the external air processing air conditioner which can perform a maintenance of a damper mechanism easily.

  In order to achieve the above-described object, the present invention provides a total heat exchange element for exchanging heat between outside air and inside air, an introduction path for introducing outside air indoors through the total heat exchange element, and the whole inside air outdoors. Outside air processing air provided with a discharge path for discharging through the heat exchange element, a bypass path for discharging the inside air by bypassing all the heat exchange elements to the outdoors, and a damper mechanism for selectively switching the bypass path and the discharge path In the conditioner, the damper mechanism includes a plurality of damper plates that are divided in the height direction of the casing and screwed to each other, and the upper side of the upper damper plate and the lower portion of the lower damper plate are connected to the casing side. A support shaft that fits into the receiving portion is attached.

  In this configuration, one of the plurality of damper plates may have a configuration in which long elongated holes are formed in the top and bottom. Further, the damper mechanism includes a damper motor that integrally rotates the plurality of damper plates, and the damper motor is fixed to the housing and connected to the support shaft of the upper damper plate. Also good. Further, the damper mechanism is arranged in a space communicating with an indoor suction port for sucking inside air into the housing, and a maintenance panel is provided on a side plate of the casing constituting a space communicating with the indoor suction port. It is also good. The plurality of damper plates may be formed in a substantially L shape that is bent at a position where the support shaft is provided. Furthermore, the plurality of damper plates may have a configuration in which an edge is bent toward the suction port side.

  According to the present invention, a total heat exchange element for exchanging heat between the outside air and the inside air, an introduction path for introducing the outside air into the housing through the total heat exchange element, and a discharge of the inside air to the outside through the total heat exchange element. In the outside air processing air conditioner, comprising: a discharge path for exhausting air; a bypass path for discharging the inside air to the outside by bypassing the total heat exchange element; and a damper mechanism for selectively switching the bypass path and the discharge path. The mechanism is provided with a plurality of damper plates that are divided in the height direction of the casing and screwed together, and is supported on the upper portion of the upper damper plate and the lower portion of the lower damper plate so as to fit the receiving portion on the casing side. Since the shaft is attached, the height of multiple damper plates can be expanded and contracted by removing the screws, and the support shafts of the damper plates can be easily removed from the receiving part of the housing, thus maintaining the damper mechanism. work It is possible to reduce reduction.

It is a perspective view which shows the internal structure of the external air processing air conditioner concerning this embodiment. It is a top view of an outside air processing air conditioner. It is a sectional side view of an outside air processing air conditioner. It is a disassembled perspective view which shows the state which pulled out the total heat exchange element from the outside air processing air conditioner. It is a perspective view showing the composition of a damper board, (a) is a figure showing the state where two damper boards are assembled, and (b) is the figure showing the state where two damper boards are disassembled. It is. It is a perspective view which shows the arrangement | positioning state of a damper mechanism, (a) is a figure which shows the state in which the discharge path is selected, (b) is a figure which shows the state in which the bypass path is selected.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing an internal structure of an outside air processing air conditioner according to the present embodiment, FIG. 2 is a plan view of the outside air processing air conditioner, and FIG. 3 is a side of the outside air processing air conditioner. It is sectional drawing. In FIG. 1 and FIG. 2, the top panel of the housing is omitted.

As shown in FIG. 1, the outside air processing air conditioner 10 includes a substantially rectangular parallelepiped casing 11. Of the pair of side panels 11 a and 11 b facing the longitudinal direction of the casing 11, the indoor side panel As shown in FIG. 2, the indoor side inlet 12 and the indoor side outlet 13 are formed in 11a, and the outdoor side inlet 14 and the outdoor side outlet 15 are formed in the outdoor side panel 11b. ing.
A duct (not shown) is connected to each of the suction ports and the air outlets, and communicates with an indoor or outdoor space via these ducts. Moreover, the outside air processing air conditioner 10 includes suspension brackets 16 fixed to the four corners of the housing 11, and these suspension brackets 16 are attached to suspension bolts (not shown) suspended from a housing of a building such as a building. The casing 11 is fixed and is configured to be suspended in a ceiling space between the casing and the ceiling plate.
In addition, as shown in FIG. 1, inspection ports 20 </ b> A to 20 </ b> C for maintaining and checking the outside air processing air conditioner 10 are formed in the ceiling plate. In this embodiment, two inspection ports 20A and 20B are formed along one side panel 11c among the pair of side panels 11c and 11d extending in the longitudinal direction of the casing 11 of the outside air treatment air conditioner 10, and the other One inspection port 20C is formed on the side panel 11d side. The inspection port 20 </ b> C is provided on the indoor side of the housing 11. In addition, an electrical box 21 in which electrical components for controlling the operation of the outside air processing air conditioner 10 are accommodated is disposed on one side panel 11c.

The outside air processing air conditioner 10 includes a total heat exchange unit 30 for adjusting the outside air temperature and an air conditioning unit 60 connected to the total heat exchange unit 30 in a housing 11. Specifically, the inside of the housing 11 is divided into an outdoor side and an indoor side by the partition wall 17 provided substantially parallel to the side panels 11a and 11b described above, and the total heat exchange unit 30 is provided in the outdoor side space. Contained. The indoor space is further divided by a partition wall 18 provided between the indoor air inlet 12 and the indoor air outlet 13, and an air conditioning unit 60 is accommodated in the space communicating with the indoor air outlet 13. ing. The air conditioning unit 60 is connected to the total heat exchange unit 30 through an air supply opening 17 a provided in the partition wall 17.
In the space that communicates with the indoor suction port 12, as shown in FIG. 2, the partition wall 17 is provided with an exhaust opening 17 b and a bypass opening 17 c that are respectively connected to a discharge path 34 and a bypass path 39 described later. A damper unit (damper mechanism) 80 for closing one of the bypass opening 17c and the bypass opening 17c and switching the inside air RA sucked from the indoor suction port 12 to the discharge path 34 or the bypass path 39 is disposed. The damper unit 80 includes a damper plate 81 that is bent into a substantially L shape, opens one of the exhaust opening 17 b and the bypass opening 17 c and closes the other, and a damper motor 82 that rotates the damper plate 81. .

As shown in FIG. 2, the total heat exchange unit 30 includes a total heat exchange element 31 that performs sensible heat exchange between the inside air RA and the outside air OA, and an exhaust fan provided on the outdoor side of the total heat exchange element 31. 32, an air supply fan 33 provided on the indoor side of the total heat exchange element 31, and a discharge path 34 for discharging the internal air RA to the outdoors via the total heat exchange element 31 and the outside air in cooperation with the casing 11. And an air path forming body 36 that forms an introduction path 35 for introducing OA indoors through the total heat exchange element 31. The air path forming body 36 is formed by combining a plurality of foamed resin members, and is arranged in the housing 11 so as to be symmetrical with respect to the total heat exchange element 31 in a plan view.
Further, in this configuration, the total heat exchange unit 30 is formed with a bypass path 39 for discharging the inside air RA to the outside by bypassing the total heat exchange element 31 in cooperation with the casing 11 and the air path forming body 36. Has been.

  As shown in FIG. 3, the total heat exchange element 31 is formed in a substantially regular quadrangular prism shape, and the four side surfaces 31 a to 31 d serving as air inlets or outlets are the top panel 11 e and bottom panel of the housing 11. It is arranged to extend in the width direction of the housing 11 in a posture inclined with respect to 11f. Specifically, rails having a U-shaped cross section extending in the width direction of the casing 11 are respectively provided on the top panel 11e, the bottom panel 11f of the casing 11, and the surface of the air passage forming body 36 facing the total heat exchange element 31. Members 37A to 37D are provided, and the side portions of the total heat exchange element 31 are supported by the rail members 37A to 37D. According to this, the inside of the housing | casing 11 is divided into four space 38a, 38b, 38c, 38d connected to the four side surfaces 31a-31d of the total heat exchange element 31, respectively.

Of the two spaces 38a and 38b formed by the air path formation body 36, the bottom panel 11f of the housing 11 and the total heat exchange element 31, a space 38a which is continuous with the side surface 31a located below the outdoor side of the total heat exchange element 31. Is communicated with the outdoor side suction port 14 via the air passage forming body 36. For this reason, this space 38a becomes an outside air suction path, and the side surface 31a of the total heat exchange element 31 becomes a suction port.
Further, a space 38b communicating with the side surface 31b located on the indoor side lower side of the total heat exchange element 31 communicates with the indoor suction port 12 via the exhaust opening 17b and the damper unit 80 (FIG. 1). For this reason, this space 38b becomes an inside air suction path, and the side surface 31b of the total heat exchange element 31 becomes a suction port.

On the other hand, the upper side surfaces 31 c and 31 d of the total heat exchange element 31 are exposed to the outside of the air path formation body 36, and are formed by the air path formation body 36, the upper surface panel 11 e of the housing 11 and the total heat exchange element 31. Of the two spaces 38 c and 38 d thus formed, a space 38 c connected to the side surface 31 c located above the outdoor side of the total heat exchange element 31 communicates with the outdoor side outlet 15 via the exhaust fan 32. For this reason, this space 38c becomes an exhaust passage, and the side surface 31c of the total heat exchange element 31 becomes an outlet.
Further, a space 38 d connected to the side surface 31 d located on the indoor side upper side of the total heat exchange element 31 communicates with the indoor air outlet 13 via the air supply fan 33 and the air conditioning unit 60. For this reason, this space 38d becomes an air supply passage, and the side surface 31d of the total heat exchange element 31 becomes an air outlet.

  The total heat exchanging element 31 is a sheet of paper folded on a meandered folded paper, and the folded paper with the folded direction is overlapped with the folded paper. Flat paper is laminated in order. For this reason, in the four side surfaces 31a to 31d of the total heat exchange element 31, the opposite side surfaces communicate with each other. That is, the side surface 31a and the side surface 31c and the side surface 31b and the side surface 31d are in communication with each other. Therefore, in this embodiment, between the outdoor side inlet 14 and the indoor side outlet 13, the outside air suction path 38 a and the air supply path 38 d communicate with each other via the total heat exchange element 31 to form the introduction path 35. On the other hand, the indoor air suction passage 38 b and the exhaust passage 38 c communicate with each other via the total heat exchange element 31 between the indoor side suction port 12 and the outdoor side outlet 15 to form a discharge route 34.

As shown in FIG. 1, the air path forming body 36 is formed on the indoor side of the total heat exchange element 31, and the indoor side is recessed downward from the total heat exchange element 31 toward the air supply opening 17 a of the partition wall 17. A recess 36A and an outdoor recess 36B formed on the outdoor side of the total heat exchange element 31 and recessed downward from the total heat exchange element 31 toward the outdoor outlet 15 of the side panel 11b. An air supply fan 33 is disposed at 36A, and an exhaust fan 32 is disposed at the outdoor recess 36B.
The exhaust fan 32 and the air supply fan 33 are both sirocco fans, and the exhaust fan 32 is attached to a position corresponding to the outdoor side air outlet 15 of the side panel 11b of the housing 11 in the outdoor side concave portion 36B. The air supply fan 33 is attached to a position corresponding to the air supply opening 17a formed in the partition wall 17 in the indoor recess 36A. In addition, the exhaust fan 32 and the air supply fan 33 are respectively provided with fan motors 32A and 33A for driving the rotary blades. In this configuration, the fan motors 32A and 33A are mounted on the ceiling plate as shown in FIG. It is provided toward one side panel 11c of the casing 11 located on the two inspection ports 20A and 20B provided.

Next, the air conditioning unit 60 will be described.
The air conditioning unit 60 cools or heats the outside air supplied indoors through the introduction path 35. As shown in FIG. 3, the indoor heat exchanger 61, the humidifier 62, the indoor heat exchanger 61, A drain pan 63 that receives drain water flowing down from the humidifier 62. The indoor heat exchanger 61 is connected to an outdoor unit (not shown) of an air conditioner including a compressor and a heat source side heat exchanger via an expansion valve 64 (FIG. 2), and evaporates during cooling operation. It functions as a cooler to cool the outside air and supplies it indoors. During heating operation, it functions as a condenser to warm the outside air and supply it indoors.
The air conditioning unit 60 has a liquid refrigerant pipe connection port 65 connected to one end of the indoor heat exchanger 61 via an expansion valve 64, and a gas refrigerant pipe connection port 66 connected to the other end of the indoor heat exchanger 61. As shown in FIG. 1, the liquid refrigerant pipe connection port 65 and the gas refrigerant pipe connection port 66 penetrate the side panel 11c of the housing 11 located on the inspection ports 20A and 20B side.

The humidifier 62 is provided on the downstream side of the flow of the outside air of the indoor heat exchanger 61. The humidifier 62 absorbs water by a humidifying element (not shown) having high water retention and allows the outside air to pass through the humidifying element. Humidify the outside air.
The humidifier 62 is provided with a humidifier control box 68 having a water supply connection port 67. In the humidifier control box 68, a depressurization for reducing the pressure of water supplied from the water supply connection port 67 to a predetermined pressure. A valve, an electromagnetic valve that opens and closes to supply the decompressed water to the humidifying element, and a control board that controls the operation of the electromagnetic valve are provided. In the present embodiment, as shown in FIG. 1, the humidifier control box 68 is provided on the side panel 11c of the housing 11 located on the inspection ports 20A and 20B side.
The side panel 11c is provided with a drain pipe connection port 69 for discharging drain water received by the drain pan 63 to the outside below the side panel 11c. The drain pipe connection port 69 is connected to a drain pipe when drain water is naturally drained from the drain pan 63. In addition, the code | symbol 70 is also a drain pipe connection port, and this drain pipe connection port 70 is used when draining from the drain pan 63 using a drain pump. When this drain pipe connection port 70 is used, the drain pipe connection port 69 for natural drainage is sealed.

  In this embodiment, the side panel 11c of the housing 11 is provided with a detachable maintenance panel 22 at a position corresponding to the total heat exchange element 31, as shown in FIG. Further, as described above, the total heat exchange element 31 has the side portions of the total heat exchange element 31 supported by the four rail members 37 </ b> A to 37 </ b> D arranged in the housing 11. Therefore, by removing the maintenance panel 22, the total heat exchange element 31 can be easily inserted and removed from the inspection port 20 in the width direction of the casing 11, and maintenance work such as replacement of the total heat exchange element 31 is easy. Can be done. Furthermore, in this embodiment, since the total heat exchange element 31 is divided and accommodated in two parts, the total heat exchange element 31 can be easily attached to the housing 11 even when working from the inspection ports 20A and 20B. Can be inserted and removed.

  In the present embodiment, in addition to providing the maintenance panel 22 on the side panel 11c of the housing 11, the fan motors 33A and 32A of the air supply fan 33 and the exhaust fan 32 are arranged toward the side panel 11c. Furthermore, since the connection port of the refrigerant pipe and drain pipe, the connection port of the water supply pipe of the humidifier and the electrical box 21 are provided in the side panel 11c, these parts can be easily accessed from the inspection ports 20A and 20B. Even if it does not enter the ceiling space, the maintenance of the part can be easily performed.

Next, the damper unit 80 will be described.
FIG. 5 is a diagram showing a configuration of the damper plate 81, and FIG. 6 is a diagram showing an arrangement state of the damper unit 80.
In the above-described outside air processing air conditioner 10, the damper plate 81 of the damper unit 80 is in a state in which the exhaust opening 17b is opened and the bypass opening 17c is closed (see FIG. 6A), and the exhaust fan 32 is driven. The inside air RA is sucked into the housing 11 from the indoor suction port 12 and then discharged to the outside as exhaust EA through the discharge passage 34 and from the outdoor outlet 15. On the other hand, by driving the air supply fan 33, the outside air OA is sucked into the housing 11 from the outdoor side suction port 14, then reaches the total heat exchange element 31 through the introduction path 35, and this total heat exchange element At 31, heat is exchanged with the inside air RA. The heat exchanged outside air OA reaches the air conditioning unit 60, is cooled or heated by the indoor heat exchanger 61 of the air conditioning unit 60, and is further humidified by the humidifier 62 as necessary. It is supplied indoors as air supply SA from the air outlet 13.
When the room temperature is lower than the outside air temperature during the heating operation, or when the room temperature is higher than the outside air temperature during the cooling operation, the damper plate 81 of the damper unit 80 closes the exhaust opening 17b and opens the bypass opening 17c. In this state (see FIG. 6B), the indoor air RA is sucked into the housing 11 from the indoor suction port 12 and then passes through the bypass path 39 that does not pass through the total heat exchange element 31 to the outdoor side. From the blower outlet 15, it is discharged outdoors as exhaust EA.

Further, after the outside air processing air conditioner 10 is stopped (for example, at night or on holidays), when the room temperature is higher than the outside air temperature and higher than the set temperature of the air conditioner, the operation of the air conditioning unit 60 is stopped. The exhaust fan 32 is driven, the inside air RA is discharged to the outside as the exhaust air EA from the outdoor side outlet 15 via the bypass opening 17c and the bypass path 39, the air supply fan 33 is driven, and the outside air OA is supplied. It can be set to automatically perform the night purge operation to be supplied indoors as SA. Further, the night purge operation can be set to automatically stop when the room temperature becomes lower than the outside air temperature or the set temperature of the air conditioner.
As a result, the air-conditioning load can be reduced, and resource saving and energy saving can be achieved.

As shown in FIG. 5, the damper plate 81 includes two upper damper plates 81 a and a lower damper plate 81 b that are divided vertically in the height direction. The upper damper plate 81a and the lower damper plate 81b are bent in a substantially L shape, and an upper support shaft 83 extending upward from the upper end is provided at the upper end of the bent portion of the upper damper plate 81a. A lower support shaft 84 extending downward from the lower end is provided at the lower end of the bent portion of 81b. In addition, on the upper part of the lower damper plate 81b, a hooking hole 86 comprising a pair of round holes and a vertically long slot is provided in the vicinity of both side ends thereof. The hook hole 86 is formed so that the length of the long hole is longer than the length of the upper support shaft 83. A pair of screw holes 87 are provided at positions below the upper damper plate 81a that fit in the left-right direction of the hook holes 86 provided in the lower damper plate 81b.
According to these configurations, since the upper and lower support shafts 83 and 84 are divided into the upper and lower ends of the upper and lower damper plates 81a and 81b, respectively, the head of the screw inserted into the screw hole 87 is used as the hook 86. The height of the damper plate 81 can be adjusted so as to be extendable and retractable, and the height of the damper plate 81 is fixed by closing the screw. be able to. Further, the two damper plates can be divided without removing the screws from the upper damper plate, and the loss of the screws during maintenance work can be prevented.

In addition, when the two upper damper plates 81a and the lower damper plate 81b are in the fixed position, a length located above the lower damper plate 81b and above the bent portion so that the two damper plates can be screwed. A hole 88 is provided, and a screw hole 89 located on the bent portion is provided in the lower portion of the upper damper plate 81a.
According to these configurations, the upper damper plate 81a is inclined with respect to the lower damper plate 81b or slips when one of the screws fixing the both ends of the two plates is loosened except during maintenance. It can be prevented from falling.

In the damper unit 80, as shown in FIG. 6B, the lower support shaft 84 of the lower damper plate 81b is fitted into the receiving portion 90 on the housing 11 side, and the upper support shaft 83 of the upper damper plate 81a is the damper motor 82. The damper motor 82 is detachably attached to a support base 85, and the support base 85 is screwed to the partition wall 17 and provided. The support base 85 is provided with a through hole (not shown) in the rotary bearing portion of the damper motor 82, and the damper motor 82 and the damper plate 81 are connected through the through hole.
In the present embodiment, the damper motor 82 is a stepping motor, and when the damper motor 82 is driven, the damper plate 81 connected to the damper motor 82 rotates with respect to the housing 11 to selectively set the exhaust opening 17b and the bypass opening 17c. It is configured to open and close.

  According to this configuration, the screws that fasten the hook holes 86 and the screw holes 87 provided on both side ends of the two damper plates 81a and 81b are loosened, and the long holes 88 and the screw holes 89 are fastened. By removing the screw, the height of the damper plate 81 can be reduced, and the upper support shaft 83 provided on the upper damper plate 81a can be removed from the rotary bearing portion of the damper motor 82. As a result, the damper plate 81 can be removed from the casing 11 and can be removed from the partition wall 17 without lifting the damper motor 82 upward, so that the damper motor 82 is close to the top plate of the casing 11. In order to ensure a sufficient exhaust flow rate, the exhaust port can be provided by making the maximum use of the space in the height direction of the housing.

In the present embodiment, the maintenance panel 23 is detachably provided on the side surface of the space that communicates with the indoor suction port 12 of the side panel 11d of the housing 11, and the inspection port 20c is removed by removing the maintenance panel 23. Therefore, without removing the cover member that covers the upper surface of the housing 11, it is possible to extend the hand into the space communicating with the indoor suction port 12 and perform maintenance work.
According to this configuration, it is possible to perform maintenance of the damper unit 80 such as replacement of the damper motor 82 from the inspection port 20c by removing the maintenance panel 23, and maintenance labor can be greatly reduced.

  Further, as shown in FIG. 5, the damper plates 81a and 81b are formed in a substantially L shape bent at a portion where the support shafts 83 and 84 are provided. The damper plate 81 is provided so as to be wider than one area, and is configured such that the wide area side of the damper plate 81 is fitted to the exhaust opening 17b and the other side is fitted to the bypass opening 17c. Further, when the bypass opening 17c is closed, the side edge on the wide area side of the damper plate 81 is configured to be close to the side panel 11d of the housing 11 in order to guide the inside air SA to the exhaust opening 17b. Yes. In addition, the left and right edges of each damper plate 81a and 81b are bent in the same direction as the bending direction of the corner of the damper plate.

According to this configuration, when ventilation is performed via the total heat exchange element 31, a sufficient exhaust flow rate for maintaining the heat exchange efficiency in the total heat exchange element 31 can be obtained via the exhaust opening 17b. . Further, since the damper unit 80 is formed in a substantially L shape, for example, a support shaft is provided at one end of the damper plate, and the damper plate is rotated about 180 degrees around the support shaft so that an air circulation path is formed. Compared with the one configured to switch, the number of rotations of the damper motor 82 for rotating the damper plate 81 for closing and opening the exhaust opening 17b and the bypass opening 17c can be suppressed, and the life of the damper motor 82 is extended. And energy saving.
Furthermore, since the edges of the left and right ends of the damper plate 81 are bent toward the indoor suction port 12, the damper plate 81 is reinforced so that either the discharge path 34 or the bypass path 39 is provided. In a state where one of the openings is closed by the damper plate 81, the damper plate 81 is pushed by the wind pressure with respect to the exhaust opening 17b or the opening closed by the bypass opening 17c, and the path in which the inside air is not selected. It is possible to prevent leakage.

  Further, along the outer periphery of the exhaust opening 17b and the bypass opening 17c, a buffer material is provided on the partition wall 17 on the side where the damper unit 80 is attached. According to this configuration, since the shock absorber is provided at the portion where the damper plate 81 and the partition wall 17 are in contact with each other, the shock and vibration due to the contact are suppressed, and the inside air is blocked by the damper plate 81. It is possible to prevent leakage into the route.

As mentioned above, although this invention was demonstrated based on embodiment, this invention is not limited to this. In the present embodiment, the damper mechanism is configured to include a damper plate that is divided into two upper and lower parts. However, the present invention is not limited to this, and when the height of the damper mechanism needs to be further reduced, the damper mechanism is divided in the height direction. In addition, a configuration including a plurality of damper plates may be adopted.
Further, in this embodiment, when the two damper plates 81a and 81b are in the fixed position, a long hole is provided in the upper corner portion of the lower damper plate 81b so that the two damper plates can be optionally screwed. The screw holes are provided in the lower corners of the upper damper plate 81a, but the present invention is not limited to this. In consideration of the loss of fixing screws, etc., which are optionally provided, a long hole processed receiving hole located on the bent portion is provided on the upper portion of the lower damper plate, and on the bent portion on the lower portion of the upper damper plate. It is good also as a structure which provided the convex part which is located, and a structure which a receiving hole and a convex part fit, when two damper plates exist in a fixed position.
Of course, other details and the like can be arbitrarily changed.

DESCRIPTION OF SYMBOLS 10 Outside air processing air conditioner 11 Housing | casing 12 Indoor side inlet 13 Indoor side outlet 14 Outdoor side inlet 15 Outdoor side outlet 17 Partition wall 17a Air supply opening 17b Exhaust opening 17c Bypass opening 20a, 20b, 20c Inspection port 23 Maintenance panel 30 Total heat exchange unit 31 Total heat exchange element 32 Exhaust fan 33 Supply air fan 34 Discharge path 35 Introduction path 36 Air path formation body 39 Bypass path 60 Air conditioning unit 80 Damper unit 81 Damper plate 81a Upper damper plate 81b Lower damper plate 82 Damper motor 83 Upper support shaft 84 Lower support shaft 90 Receiving part EA Exhaust OA Outside air RA Inside air SA Supply air

Claims (6)

A total heat exchange element for exchanging heat between the outside air and the inside air in the housing, an introduction path for introducing outside air through the total heat exchange element, a discharge path for discharging the inside air outdoors via the total heat exchange element, and an inside air In an outside air processing air conditioner comprising a bypass path that bypasses the total heat exchange element and discharges it outdoors, and a damper mechanism that selectively switches between the bypass path and the discharge path, the damper mechanism includes: A plurality of damper plates that are divided in the height direction and screwed to each other are provided, and support shafts that fit into the receiving portions on the housing side are attached to the upper portion of the upper damper plate and the lower portion of the lower damper plate.
An outside air processing air conditioner characterized by that.   The outside air processing air conditioner according to claim 1, wherein one of the plurality of damper plates has a long hole formed in a vertical direction. The damper mechanism includes a damper motor that integrally rotates the plurality of damper plates,
The outside air processing air conditioner according to claim 1 or 2, wherein the damper motor is fixed to the casing and connected to the support shaft of the upper damper plate. The damper mechanism is disposed in a space communicating with an indoor suction port that sucks inside air into the housing.
The outside air processing air conditioner according to any one of claims 1 to 3, wherein a maintenance panel is provided on a side plate of the casing constituting a space communicating with the indoor side suction port.   The outside air processing air conditioner according to any one of claims 1 to 4, wherein the plurality of damper plates are formed in a substantially L shape bent at a position where the support shaft is provided.   The outside air processing air conditioner according to any one of claims 1 to 5, wherein an edge of each of the plurality of damper plates is bent toward the suction port side.

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