JP5449950B2 - Outside air treatment air conditioner - Google Patents

Description

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

  In general, a so-called outside air conditioner (outside air processing air conditioner) is known that discharges indoor air to the outdoors and introduces the outside air indoors with the indoor air as a heat source (for example, Patent Document 1). reference). In general, an outside air processing air conditioner is provided with two ventilation paths, an introduction path that sucks outside air and supplies it indoors, and a discharge path that sucks outside air and discharges it outside. Two or more blowers are provided.

JP 2003-185291 A

In general, in the outside air processing air conditioner, the plurality of blowers described above and the electrical box that controls these blowers or supplies a drive current to these blowers are important functional components. For this reason, it is desirable to arrange it efficiently so that it can be easily maintained. However, in an outside air processing air conditioner installed in a limited space such as a ceiling space, the blower is installed in a place where maintenance is easy. It was difficult to secure a place for installing the electrical box.
Accordingly, an object of the present invention is to provide an outside air processing air conditioner including a plurality of blowers, and efficiently perform maintenance of the plurality of blowers and the electrical equipment box containing the substrates related to the operations of these blowers. It is to arrange.

To achieve the above object, the present invention includes a total heat exchange element for exchanging heat between outside air and inside air, an introduction fan for introducing outside air indoors through the total heat exchange element, and outside air inside the casing. In an outside air processing air conditioner provided with a discharge fan that discharges through the total heat exchange element, the drive motor of each fan is disposed opposite to a side plate that constitutes one side surface of the housing, and the drive motor and the A maintenance space for performing maintenance work of the drive motor is formed between the side plate, and an opening that exposes each drive motor to the outside of the housing and an opening that faces each drive motor are formed in the side plate, respectively. And a maintenance panel that is detachably disposed in the opening and is provided on the housing on the maintenance panel facing one of the drive motors. It was placed removably the electric box housing the control board for controlling the electrical components, characterized in that.

In the above configuration, a heat exchanger that performs heat exchange between the air that has passed through the total heat exchange element and the refrigerant is provided on the outside air outlet side of the total heat exchange element, and an expansion valve is provided in the refrigerant pipe that is connected to the heat exchanger. It is good also as a structure provided near to the said side plate. Furthermore, a humidifier that humidifies the air that has passed through the total heat exchange element and a humidifier controller that controls water supply to the humidifier are provided on the outside air outlet side of the total heat exchange element, and the humidifier control It is good also as a structure which attached the part to the said side plate in the vicinity of the opening in which the said electrical equipment box was provided .

Also, the outside air processing air conditioner in the ceiling space may be configured to access port ceiling plate constituting the ceiling space is disposed to be located in the vicinity of the electrical component box. The humidifier control unit may include a control board, and the control board may be connected to the control board housed in the electrical box.

  According to the present invention, maintenance of at least one drive motor of an introduction fan that introduces outside air indoors through a total heat exchange element or an exhaust fan that discharges inside air outdoors via a total heat exchange element in an outside air processing air conditioner Since the electrical box is detachably disposed in the opening where the space faces, the drive motor and the electrical box can be efficiently disposed in a limited space in a state where maintenance can be easily performed.

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 an expansion perspective view which shows the principal part structure of an external air processing air conditioner. It is a disassembled perspective view which shows the state which pulled out each part containing a total heat exchange element from an external air process air conditioner.

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 diagram of the outside air processing air conditioner. It is a sectional side view. 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, two inspection ports 20 and 20 for maintaining and inspecting the outside air processing air conditioner 10 are formed on the ceiling plate. In the present embodiment, these inspection ports 20 and 20 are formed. Are arranged side by side along one side panel 11c of the pair of side panels 11c, 11d extending in the longitudinal direction of the casing 11 of the outside air treatment air conditioner 10. An electrical box 21 containing a control board 29 (FIG. 4) for controlling the operation of the outside-air processing air conditioner 10 is integrally attached to the maintenance panel 23 constituting the side panel (side plate) 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 80 is disposed for blocking 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. 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. . The damper motor 82 included in the damper unit 80 is connected to the control board 29 (FIG. 4) housed in the electrical box 21 and operates according to the control of the control board 29. The damper motor 82 is constituted by, for example, a stepping motor, and a drive current and a drive pulse are input from the control board 29 to the damper motor 82.

  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. (Exhaust fan) 40B, air supply fan (introduction fan) 40A provided on the indoor side of the total heat exchange element 31 and the casing 11, the total heat exchange element 31 is placed outside the room air RA. And an air passage forming body 36 that forms an introduction passage 35 for introducing the exhaust passage 34 and the outside air OA into the room 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. Since it communicates with the outdoor side suction port 14 via the air passage formation body 36, the space 38a becomes the outside air suction path, and the side surface 31a of the total heat exchange element 31 becomes the suction port. Further, the 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 side suction port 12 via the exhaust opening 17b and the damper unit 80 (FIG. 1). A side air 31b of the total heat exchange element 31 serves as 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 38c and 38d, the space 38c connected to the side surface 31c located above the outdoor side of the total heat exchange element 31 communicates with the outdoor side outlet 15 via the exhaust fan 40B. 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, the space 38d connected to the side surface 31d located on the indoor side upper side of the total heat exchange element 31 communicates with the indoor side air outlet 13 via the air supply fan 40A and the air conditioning unit 60. An air passage is formed, and a side surface 31d of the total heat exchange element 31 is a blowout port.

  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 the present embodiment, the outdoor air suction path 38 a and the air supply path 38 d communicate with each other via the total heat exchange element 31 between the outdoor side suction port 14 and the indoor side blower outlet 13. On the other hand, the indoor air suction passage 38b and the exhaust passage 38c communicate with each other via the total heat exchange element 31 between the indoor side inlet 12 and the outdoor side outlet 15 to form a discharge passage 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 40A is disposed at 36A, and an exhaust fan 40B is disposed at the outdoor recess 36B.
The exhaust fan 40B is attached at a position corresponding to the outdoor outlet 15 of the side panel 11b of the housing 11 at the outdoor recess 36B, while the air supply fan 40A is formed on the partition wall 17 at the indoor recess 36A. The air supply opening 17a communicates with and is attached to a position corresponding to the indoor side air outlet 13 of the side panel 11a.

The supply fan 40A is a sirocco fan configured by accommodating a cylindrical rotary blade 42A having a plurality of fins in a substantially cylindrical casing 41A, and a fan motor (drive motor) that rotationally drives the rotary blade 42A. 50A is attached. The rotary blade 42A of the present embodiment draws air in the indoor recess 36A from the intake ports 44A and 45A provided at both end surfaces in the rotation axis direction, and air conditioning to be described later from the air outlet 43A provided in the side surface direction. It is a double suction type that blows air toward the unit 60. The fan motor 50A can be fixed to the rotary blade 42A from either end in the axial direction, and the fan motor 50A can be attached to either the intake port 44A side or the intake port 45A side. In the present embodiment, the fan motor 50A is disposed in the air inlet 44A facing the side panel 11c in the installed state on the housing 11.
Similarly, the exhaust fan 40B is a double-suction sirocco fan in which rotating blades (not shown) are accommodated in the casing 41B. From the intake ports 44B and 45B provided on both side surfaces of the casing 41B, Air is sucked and blown from an air outlet (not shown) through the outdoor side air outlet 15. In the exhaust fan 40B, a fan motor (drive motor) 50B that rotationally drives the rotary blades is provided in the intake port 44B that faces the side panel 11c when installed in the housing 11.

  In the present embodiment, fan motors 50B and 50A are provided toward side panel 11c positioned on the two inspection ports 20 and 20 provided on the ceiling plate as shown in FIG. A maintenance space 46A, which is a space for performing maintenance work for the fan motor 50A, is formed between the fan motor 50A and the side panel 11c. Similarly, a maintenance space 46B is provided between the fan motor 50B and the side panel 11c. Is formed. The maintenance spaces 46A and 46B are exposed by removing the maintenance panels 23 and 24 that close the openings 19c and 19a from the side panel 11c, and in this state, the fan motors 50A and 50B can be accessed.

Next, the air conditioning unit 60 will be described.
The air conditioning unit 60 cools or heats the outdoor air supplied indoors through the introduction path 35, and as shown in FIG. 3, an indoor heat exchanger (heat exchanger) 61, a humidifier 62, and these indoor heats. A drain pan 63 that receives drain water flowing down from the exchanger 61 and 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 a refrigerant pipe having an expansion valve 64 (FIG. 2). During operation, it functions as an evaporator to cool outside air and supplies it indoors, and during heating operation, it functions as a condenser to heat 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. The liquid refrigerant pipe connection port 65 and the gas refrigerant pipe connection port 66 pass through the side panel 11c of the housing 11 located on the inspection ports 20 and 20 side, as shown in FIG.

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 (humidifier controller) 68 having a water supply connection port 67, and the humidifier control box 68 is supplied from the water supply connection port 67 (not shown). A pressure reducing valve that reduces the pressure of the water to a predetermined pressure, an electromagnetic valve that opens and closes to supply the reduced pressure water to the humidifying element, and a control board that controls the operation of the electromagnetic valve are provided.
In the present embodiment, the humidifier control box 68 is provided on the side panel 11c of the housing 11 located on the inspection ports 20 and 20 side as shown in FIG. The control board of the humidifier control box 68 is connected to a control board 29 (FIG. 4) in the electrical equipment box 21, and receives power and control signals from the control board 29 to drive the electromagnetic valve.
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 at a position 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 the drain pump 63A (FIG. 2). When this drain pipe connection port 70 is used, the drain pipe connection port 69 for natural drainage is sealed.

FIG. 4 is an enlarged perspective view of a main part showing the vicinity of the electrical equipment box 21 of the outside air processing air conditioner 10, and the electrical equipment box 21 and the maintenance panel 23 are shown in an exploded state.
As shown in FIG. 4, the electrical box 21 is integrally attached to the maintenance panel 23 that closes the opening 19 c with screws or the like, and can be detached from the maintenance panel 23. Further, a lid 21a is fixed to the surface of the electrical box 21 with screws or the like, and when the lid 21a is opened, the control board 29 housed in the accommodation space in the electrical box 21 is exposed.
The control board 29 is mounted with various circuits for supplying operation power to the electrical components included in the outside air processing air conditioner 10 and controlling the operation. For example, on the surface of the control board 29, that is, the surface on the lid 21a side, the timing and operation of operating the fan motors 50A and 50B, the drain pump 63A, the damper motor 82, the humidifier control box 68, the expansion valve 64 described later, and the like. A control circuit (not shown) for calculating the amount and switching is mounted.
Most of these electrical components to be controlled are accommodated in the housing 11. For this reason, the maintenance panel 23 is formed with a wiring hole 23 a for passing wiring from the electrical component in the housing 11 to the control board 29. In addition, a wiring hole 21c is formed on the side surface of the electrical box 21 from the control board 29 to allow wiring connected to a commercial power source (not shown) outside the housing 11 and an outdoor unit (not shown) of the air conditioner. Has been.

In addition, to supply power to the back surface of the control board 29, that is, the surface on the maintenance panel 23 side, to the fan motors 50A and 50B, the drain pump 63A, an expansion valve 64, a humidifier control box 68, a damper motor 82, and the like. Power supply circuit (not shown).
The control circuit and power supply circuit of the control board 29 have a large number of wires connected to each of the fan motors 50A and 50B, the drain pump 63A, the damper motor 82, the humidifier control box 68, the expansion valve 64, etc. through the wiring holes 23a. Are connected to the control board 29. The electrical box 21 is located indoors inside the housing 11, and as shown in FIG. 2, the fan motor 50A, the drain pump 63A, the damper motor 82, the humidifier control box 68, and the expansion valve 64 are also in the room. Since it is located inside, the electrical equipment box 21 is located near these electrical components. Thereby, the wiring length from the control board 29 to the electrical component to be controlled can be shortened, and the wiring inside the housing 11 is facilitated.

  The power supply circuit included in the control board 29 has a capacity capable of driving the fan motors 50A and 50B that require a large current, and generates heat that cannot be ignored during operation. In the present embodiment, part or all of the electrical equipment box 21 including the lid 21a is made of a metal (iron, stainless steel, aluminum, etc.) having excellent thermal conductivity, so that the heat generated by the control board 29 can be easily achieved. Can dissipate heat. Furthermore, if the maintenance panel 23 to which the electrical box 21 is fixed is made of, for example, a metal having excellent thermal conductivity, the heat of the control board 29 is also transmitted to the maintenance panel 23 and efficiently radiated. Furthermore, the maintenance panel 23 is arranged facing the maintenance space 46A of the fan motor 50A. As described above, the air supply fan 40A is a double-suction type sirocco fan, and the fan motor 50A is provided at the intake port 44A. Therefore, the air in the maintenance space 46A is sucked out and blown into the room. Therefore, since airflow is generated by the air supply fan 40A on the back surface side of the maintenance panel 23, the heat transmitted to the maintenance panel 23 is quickly radiated. In other words, the heat generated by the control board 29 is quickly and efficiently radiated through the maintenance panel 23, so that the life of the control board 29 and each electrical component to be controlled can be extended, and the outside air can be stably supplied over a long period of time. The processing air conditioner 10 can be operated.

FIG. 5 is an exploded perspective view showing a state in which each part including the total heat exchange element 31 is pulled out in the outside air processing air conditioner 10. In addition, illustration of the element which the humidifier 62 has in this FIG. 5 is abbreviate | omitted.
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. In addition, on the side panel 11c, as described above, the maintenance panel 23 attached integrally with the electrical equipment box 21 is arranged side by side on the maintenance panel 22, and the maintenance panel 24 is arranged on the opposite side of the maintenance panel 23. Further, the side panel 11c has a maintenance panel 25 located in the vicinity of the liquid refrigerant pipe connection port 65, the gas refrigerant pipe connection port 66, and the drain pipe connection port 69, and a maintenance unit integrally attached to the humidifier control box 68. A panel 26 is arranged. These maintenance panels 22 to 26 are all detachable from the side panel 11c, and FIG. 5 shows a state in which the maintenance panels 22 to 26 are removed. The maintenance panels 22 to 26 are detachably fixed to the side panel 11c with bolts or screws, respectively.

  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, as shown in FIG. 5, 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 housing 11 (X direction in FIG. 5). Maintenance work such as replacement of the exchange element 31 can be easily performed. Furthermore, in the present embodiment, since the total heat exchange element 31 is divided and accommodated in two, even if the work is performed from the inspection port 20, the total heat exchange element 31 can be easily removed from the housing 11. Can be inserted and removed.

  Further, as described above, the maintenance panel 23 integrated with the electrical equipment box 21 faces the fan motor 50A of the air supply fan 40A. When the maintenance panel 23 is removed together with the electrical equipment box 21, the maintenance panel 23 opens as shown in FIG. 19c is opened, and the fan motor 50A is exposed from the opening 19c. The maintenance panel 24 is located at a position facing the fan motor 50B of the exhaust fan 40B. When the maintenance panel 24 is removed, the opening 19a is opened, and the fan motor 50B is exposed from the opening 19a. Therefore, maintenance can be performed on the fan motors 50A and 50B from the openings 19c and 19a, and the fan motors 50A and 50B can be taken out from the openings 19c and 19a as needed. In this way, maintenance work can be performed on both the fan motors 50A and 50B from the side panel 11c side.

Further, when the maintenance panel 25 provided on the side panel 11c is removed together with the maintenance panels 22, 23, 24, an opening 19d is opened. From this opening 19d, the liquid refrigerant pipe connection port 65, the gas refrigerant pipe connection port 66, and the drain pipe are opened. The piping inside the casing 11 connected to the connection port 69 is exposed. For this reason, maintenance of each connection port 65, 66, 69 and piping connected to each connection port can be performed from the side panel 11c side.
The humidifier 62 is integrally attached to the inside of the maintenance panel 26 detachably provided on the side panel 11c, and the humidifier control box 68 is attached to the outside of the maintenance panel 26. The humidifier control box 68 and the humidifier 62 can be pulled out of the casing 11 together with the maintenance panel 26, and maintenance such as cleaning and replacement of elements (not shown) can be performed from the side panel 11c side.

Thus, in the outside air processing air conditioner 10 of the present embodiment, the maintenance panels 23 and 24 are detachably disposed on the side panel 11c at positions facing the fan motors 50A and 50B. One maintenance panel 23 is integrally provided with an electrical box 21, and inspection ports 20 and 20 are located in the vicinity of the maintenance panels 23 and 24. For this reason, the ceiling space where the outside air processing air conditioner 10 is installed can be accessed through the inspection port 20 to easily perform maintenance of the electrical equipment box 21, and the fan motor can be removed by removing the maintenance panels 23 and 24. A state where maintenance of 50A and 50B is possible can be realized quickly. Thereby, the maintainability of the electrical equipment box 21 and the two fan motors 50A and 50B can be greatly enhanced.
Further, the maintenance panel 26 integrally including the humidifier 62 and the humidifier control box 68, the maintenance panel 25 for maintenance of the connection port of the refrigerant pipe and the drain pipe, the connection port of the water supply pipe of the humidifier, and the electrical equipment Since the box 21 is provided on the side panel 11c, these parts can be easily accessed from the inspection port 20, and maintenance of the parts can be easily performed without entering the ceiling space.

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, and the exhaust fan 40B is driven, so that the inside air RA is taken into the indoor suction port. After being sucked into the housing 11 from 12, it is discharged to the outside as exhaust EA from the outdoor outlet 15 through the discharge path 34. On the other hand, by driving the air supply fan 40A, 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.
Further, 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 is closed and the bypass opening 17c is closed. By making it open, the inside 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 as the exhaust EA from the outdoor air outlet 15. It is discharged outdoors. For this reason, the air-conditioning load of the air conditioning unit 60 can be reduced, and resource saving and energy saving can be achieved.

As described above, according to the present embodiment, the total heat exchange element 31 that exchanges heat between the outside air and the inside air, the supply fan 40A that introduces the outside air indoors via the total heat exchange element 31, and the inside air In the outside air processing air conditioner 10 including the exhaust fan 40B that exhausts the air through the total heat exchange element 31, an opening 19c facing the maintenance space 46A of the fan motor 50A of the air supply fan 40A is formed on the side panel of the housing 11. Since the electrical box 21 is detachably disposed in the opening 19c, the maintenance space 46A of the fan motor 50A can be accessed simply by removing the electrical box 21 and the maintenance work of the fan motor 50A is reduced. it can. Further, by making the electrical box 21 detachable, the maintainability of the electrical box 21 is improved, and by providing the electrical box 21 in the opening 19c, the installation space for the electrical box 21 can be easily secured, and the fan motors 50A, 50B and It is possible to arrange the electrical box 21 in a state where it can be easily maintained, and it is also possible to reduce the size of the outside air processing air conditioner 10.
In this configuration, the electrical box 21 can of course be provided in the opening 19a facing the maintenance space 46B of the fan motor 50B of the exhaust fan 40B, and the fan motor 50B and the electrical box 21 can be efficiently maintained in a state where maintenance is easy. The effect that it can arrange | position is acquired and since the electrical equipment box 21 is located in the vicinity of the inspection port 20, the work burden concerning a maintenance can be reduced. Moreover, the wiring length from the electrical equipment box 21 to the fan motor 50A (50B) can be shortened, and the wiring of the housing 11 can be easily performed.

  In the present embodiment, the maintenance panel 23 is detachably disposed in the opening 19c of the side panel 11c, and the electrical box 21 is integrally attached to the maintenance panel 23. Therefore, the electrical box 21 can be easily detached from the opening 19c. In addition, if the maintenance panel 23 is made of a material having high thermal conductivity such as metal, the heat of the control board 29 accommodated in the electrical box 21 can be efficiently radiated through the maintenance panel 23.

  Furthermore, the air supply fan 40A and the exhaust fan 40B are constituted by a double-suction sirocco fan, and the fan motors 50A and 50B are attached to the intake ports 44A and 44B. For this reason, since the airflow by the air supply fan 40A is generated on the opposite side of the electrical equipment box 21 through the side panel 11c, the heat of the electrical equipment box 21 is efficiently radiated through the maintenance panel 23 that closes the opening 19c. The In particular, since the control board 29 accommodated in the electrical box 21 has a power supply circuit (not shown) for driving the fan motor 50A on the surface on the maintenance panel 23 side, heat generated by the power supply circuit can be efficiently radiated. Thus, the life of each part of the control board 29 and the outside air processing air conditioner 10 can be extended, and the outside air processing air conditioner 10 can be stably operated over a long period of time.

  Further, the side panel 11c is formed with openings 19a and 19c facing the maintenance spaces 46A and 46B of the fan motors 50A and 50B of the air supply fan 40A and the exhaust fan 40B, respectively. Since 21 is detachably arranged, the fan motors 50A and 50B and the electrical equipment box 21 can be efficiently arranged in a state where maintenance can be easily performed.

Moreover, in the said embodiment, the indoor heat exchanger 61 which performs heat exchange with the air which passed the total heat exchange element 31, and a refrigerant | coolant is provided in the outdoor air exit side of the total heat exchange element 31, and the indoor heat exchanger 61 is provided with Since the expansion valve 64 is provided close to the side panel 11c in the connected refrigerant pipe, the wiring length from the control board 29 accommodated in the electrical box 21 to the expansion valve 64 can be shortened, and the wiring is easy. become.
Furthermore, in the embodiment, a humidifier 62 that humidifies the air that has passed through the total heat exchange element 31 and a humidifier control box 68 that controls the water supply to the humidifier 62 on the outside air outlet side of the total heat exchange element 31. Since the humidifier control box 68 is attached to the side panel 11c in the vicinity of the opening 19c provided with the electrical equipment box 21, the wiring length from the control board 29 to the humidifier control box 68 can be shortened. Wiring is easy to handle. In addition, since the outside air processing air conditioner 10 is installed in the ceiling space so that the inspection port 20 of the ceiling plate constituting the ceiling space is located in the vicinity of the electrical box 21, the electrical box 21 is connected to the electrical box 21 from the inspection port 20. Easy access to and maintenance. Furthermore, if the electrical box 21 is removed to expose the opening 19c, the maintenance space 46A can be accessed directly from the inspection port 20 and maintenance of the fan motor 50A can be performed. Thereby, the maintainability of 50 A of fan motors with the electrical equipment box 21 can be improved significantly.
Further, the outside air processing air conditioner 10 has a damper unit (damper mechanism) 80 for switching the inside air RA sucked from the indoor suction port 12 to the discharge path 34 or the bypass path 39 to flow. Since the damper motor 82 for rotating the damper plate 81 is provided on the electrical equipment box 21 side, the wiring length from the control board 29 in the electrical equipment box 21 to the damper motor 82 can be shortened. Handling becomes even easier.

  As mentioned above, although this invention was demonstrated based on the said embodiment, this invention is not limited to this. For example, in the present embodiment, the total heat exchange element 31 is divided into two and accommodated in the housing 11, but is not limited thereto. Further, when the width (capacity) of the total heat exchange element 31 may be smaller than the width of the housing 11, a spacer formed in the shape of a square column with foamed resin is disposed on the side of the total heat exchange element 31. May be. Furthermore, in the said embodiment, although the electrical equipment box 21 illustrated the structure fixed to the maintenance panel 23, this invention is not limited to this, The maintenance panel 23 comprises one surface of the electrical equipment box 21. FIG. It may be a thing. That is, the bottom surface of the electrical equipment box 21 may also serve as the maintenance panel 23, and other detailed configurations of the outside air processing air conditioner 10 can be arbitrarily changed.

10 Outside air processing air conditioner 11 Housing 11c Side panel (side plate)
19a, 19b, 19c, 19d Opening 20 Inspection port 21 Electrical box 22, 23, 24, 25, 26 Maintenance panel 30 Total heat exchange unit 31 Total heat exchange element 34 Discharge path 35 Introduction path 40A Air supply fan (introduction fan)
40B Exhaust fan (exhaust fan)
46A, 46B Maintenance space 50A, 50B Fan motor (drive motor)
60 Air conditioning unit 62 Humidifier 63A Drain pump 64 Expansion valve 68 Humidifier control box (humidifier control unit)
61 Indoor heat exchanger (heat exchanger)
80 Damper unit 82 Damper motor EA Exhaust OA Outside air RA Inside air SA Air supply

Claims (5)

A total heat exchange element that exchanges heat between the outside air and the inside air in the housing, an introduction fan that introduces the outside air indoors through the total heat exchange element, and an exhaust fan that discharges the outside air outdoors via the total heat exchange element; In an outside air processing air conditioner equipped with
A maintenance space for carrying out maintenance work of the drive motor is formed between each drive motor and the side plate, with the drive motor of each blower disposed opposite to the side plate constituting one side of the housing ,
The side plate is provided with an opening that exposes each of the drive motors to the outside of the housing, and a maintenance panel that closes the openings facing the drive motors and is detachably disposed in the openings. On the maintenance panel facing the drive motor, an electrical box containing a control board for controlling the electrical components provided in the housing is detachably arranged.
Outside air process air harmonization machine, characterized in that. Provided on the outside air outlet side of the total heat exchange element is a heat exchanger for exchanging heat between the air that has passed through the total heat exchange element and the refrigerant, a refrigerant pipe connected to the heat exchanger, an expansion valve on the side plate The outside air processing air conditioner according to claim 1, wherein the outside air processing air conditioner is provided. A humidifier that humidifies the air that has passed through the total heat exchange element and a humidifier control unit that controls water supply to the humidifier are provided on the outside air outlet side of the total heat exchange element, and the humidifier control unit is outside air process air conditioner according to claim 1 or 2, characterized in that attached to the side plate in the vicinity of opening the electrical component box is provided. The outside air processing air conditioner in the ceiling space, one of claims 1, characterized in that the inspection port ceiling plate constituting the ceiling space is disposed to be located in the vicinity of the electric box 3 An outside air processing air conditioner according to claim 1.   The outside air processing air conditioner according to claim 3 or 4, wherein the humidifier controller includes a control board, and the control board is connected to the control board housed in the electrical box.