JPH06331170A - Air conditioner - Google Patents

Abstract

PURPOSE:To reduce an installation space with excellent executability of a facility by forming vent ports for communicating a heat exchanging exhaust inlet port and a heat exchanged atmosphere outlet with an introducing air duct at one end wall of the duct side, and closing the vent ports at the time of non-installing a heat exchanging unit. CONSTITUTION:A pair of vent ports 19a, 19b for communicating heat exchanging exhaust inlet port 20a and heat exchanged atmosphere outlet 20b of a heat exchanging unit 2c side with introducing air ducts 4 are formed at one end wall at the forming side of the duct 4 of an air conditioning casing 3. If the unit 2c is not provided, a pair of covers 29a, 29b are clamped at the casing 3 with screws, thereby closing the ports 29a, 29b, and the casing 3 is solely used, i.e., the unit 2a is solely operated. Thus, a tubing construction for connecting an air conditioner to the heat exchanging unit is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an introduction air passage portion for introducing return air from an air conditioning target area into an air conditioner casing, and for supplying air discharged from the introduction air passage portion to the air conditioning target area. The present invention relates to an air conditioner provided with a temperature control heat exchanger that controls temperature as air.

[0002]

2. Description of the Related Art In the above air conditioner, there are cases where air conditioning target areas are cooled and heated, and ventilation is required for the air conditioning target areas. In that case, conventionally, the temperature has been adjusted to an appropriate temperature. In order to save energy by recovering as much as possible the amount of heat (the amount of cold heat in cooling, the amount of warm heat in heating) contained in the exhaust discharged to the outside from the air-conditioning target area that is in a controlled state, the exhaust discharged to the outside and the outside When installing a heat exchange unit for ventilation that exchanges heat with the outside air taken in from the air conditioning target area, the heat exchange unit was connected to the air conditioner by piping such as a duct and used.

[0003]

Therefore, in the above prior art, when the heat exchange unit for ventilation is connected to the air conditioner for use, the heat exchange unit and the air conditioner are installed in addition to the heat exchange unit. There was a problem that piping work such as connecting ducts was required, and the time and effort required for installation at the time of equipment installation increased. At the same time, there is a problem that an extra space is required for installing the air conditioning equipment only in the space occupied by the pipes such as ducts.

The present invention has been made in view of the above circumstances, and an object thereof is to reduce the time and effort required for installation when installing a heat exchange unit for ventilation connected to an air conditioner. And to reduce the space required to install air conditioning equipment.

[0005]

According to a characteristic configuration of an air conditioner according to the present invention, an introduction air passage part for introducing return air from an air conditioning target area is formed at one end of the air conditioner casing, Is a separate unit, and a heat exchange unit for exchanging heat between the exhaust air discharged to the outside and the outside air taken in from the outside is arranged adjacent to one end wall of the air conditioner casing on the side where the introduction air passage is formed. In the state,
A pair of ventilation openings for communicating the heat exchange exhaust introduction opening and the heat exchanged outside air delivery opening formed on the facing surface portion of the heat exchange unit with respect to the air conditioner casing to the introduction air passage portion, A closing means is provided which is formed on the one end wall of the machine casing on the side where the introduction air passage portion is formed and closes each of the ventilation ports when the heat exchange unit is not installed.

[0006]

According to the characterizing feature of the present invention, the air-conditioner casing has a pair of communication ports formed at one end wall thereof on the side where the introduction air passage is formed, and the heat exchange unit is provided on the side where the introduction air passage is formed in the air-conditioner casing. One of a pair of communication ports on the air conditioner casing side when installed adjacent to the one end wall of the heat exchange unit, and a heat exchange exhaust gas introduction port formed on the surface of the heat exchange unit facing the air conditioner casing. Directly communicate with each other, and the other communication port on the air-conditioner casing side directly communicates with the heat-exchanged outside air outlet formed on the facing surface of the heat exchange unit. Then, a part or all of the return air introduced from the air conditioning target area to the introduction air passage part of the air conditioner casing passes through the one communication port as the exhaust gas and the heat exchange exhaust gas intake port that communicates with the one communication port to generate heat. The air is ventilated into the exchange unit, exchanges heat with the outside air taken in from the outside by the heat exchange unit, and is then discharged from the heat exchange unit to the outside. On the other hand, the outside air that has undergone heat exchange with the exhaust gas in the heat exchange unit passes through the other communication port and the heat-exchanged outside air outlet port that communicates with the other communication port, and is ventilated to the introduction air passage portion of the air conditioner casing. Then, when a part of the return air is ventilated to the heat exchange unit as exhaust air, the mixed air of the rest of the return air and the outside air ventilated from the heat exchange unit to the introduction air passage section,
Further, when all the return air is ventilated to the heat exchange unit as exhaust air, only the outside air from the heat exchange unit is temperature-controlled by the heat-conditioning heat exchanger in the air conditioner casing as the derivation air from the introduction air passage part. By supplying the temperature-controlled air to the air-conditioning target area as the supply air, the air-conditioning target area is ventilated together with the temperature control.

When the heat exchange unit is not installed, each of the pair of communication ports formed in the one end wall of the air conditioner casing on the side where the introduction air passage is formed is closed by the closing means. Then, in this case, the return air introduced from the air conditioning target area to the introduction air passage portion is temperature-controlled as it is as the derivation air from the introduction air passage portion by the temperature adjustment heat exchanger, and this temperature-adjusted air is supplied as the supply air. It is circulated and supplied to the air conditioning target area.

[0008]

According to the characteristic configuration of the present invention, when the heat exchange unit for ventilation is connected to the air conditioner for use, the heat exchange unit is simply installed adjacent to the one end wall of the casing of the air conditioner. Since it is good, there is no need for piping work such as ducts for connecting the air conditioner and the heat exchange unit in addition to the installation of the heat exchange unit as in the past. Can be reduced.
At the same time, it is not necessary to provide an extra space outside the device, which is occupied by piping such as ducts, so that the installation space of the air conditioning equipment can be reduced.

Further, when the heat exchange unit is not installed, the air conditioner can be operated and used independently only by closing the communication port by the closing means.

[0010]

[Embodiments] Next, embodiments in which the present invention is applied to a separate type heat pump type air conditioner will be described.

The air conditioner is used for air conditioning in, for example, an intelligent building.
As shown in FIG. 3, the airframe is divided into an indoor unit 2a and an outdoor unit 2b, which are connected to each other by transit refrigerant pipes 1a, 1b, 1c. Then, basically, the mixed air in which the return air Ri from the interior zone I as the air conditioning target area and the outside air OA taken from the outside are mixed is taken into the indoor unit 2a, and the temperature of the taken air is adjusted. Air is supplied as Si to the interior zone I. In addition, a part of the return air Ri from the interior zone I is heat-exchanged with the outside air OA by a heat exchange unit 2c (see FIG. 1) for ventilation of a total heat exchange type described later, and then as an exhaust air EA. The interior zone I is ventilated together with the heating and cooling.
In addition, the return air Rp from the perimeter zone P, which is another air conditioning target area, is taken into the indoor unit 2a, and the return air Rp is
Air supply Sp to the perimeter zone P after adjusting the temperature
Is being circulated as a supply. Further, for each of the zones I and P, a variable air volume device 15 is provided which automatically adjusts the supply air volume to each of the zones I and P so as to adjust and maintain the zone internal temperature at the set temperature based on the zone internal temperature detection. ing.

The indoor unit 2a has a first temperature control heat exchanger 8a for controlling the temperature of the supply air Si to the interior zone I.
And two heat exchangers for temperature control of the second temperature control heat exchanger 8b for controlling the temperature of the air supply Sp to the perimeter zone P, and humidify the air supply Si and Sp to each zone I and P respectively. First and second humidifiers 17a, 17b, each zone I,
Air supply fans 9a, 9b for supplying air supply Si, Sp to P,
First and second electronic expansion valves ex1 and ex2, and a second electromagnetic valve v2 are provided. On the other hand, the outdoor unit 2b is equipped with a compressor Cm that circulates a refrigerant between the outdoor unit 2a and the temperature control heat exchangers 8a and 8b, and the outdoor heat exchanger 8c, and the first solenoid valve v1, The check valve vs, the four-way valve vc, the accumulator ac, and the outdoor heat exchanger 8c are provided with a fan 9c that ventilates the outdoor air to be released and absorbed.

A heat pump circuit mainly comprising the compressor Cm, the heat exchangers 8a, 8b and 8c on the indoor unit side and the outdoor unit side, the first and second electronic expansion valves ex1 and ex2, and the accumulator ac. The H is configured such that the heating operation and the cooling operation can be selectively performed for each zone I and P by switching the four-way valve vc and the first and second electromagnetic valves v1 and v2.

1 to 5 (note that FIGS. 3, 4, and 5 respectively show AA cross section, BB cross section, and XX cross section in FIG. 1)
As shown in FIG. 5, the air-conditioner casing 3 on the indoor unit 2a side introduces the return air Ri from the interior zone I through the inlet 4a on the casing upper surface side.
Is formed at one end (right end) of the air conditioner casing 3, and is a unit separate from the air conditioner casing 3, and is a unit for exchanging heat between the exhaust air EA discharged to the outside and the outside air OA taken from the outside. The heat exchange unit 2c for use is installed adjacent to one end wall (right side wall) of the air-conditioner casing 3 on the side where the introduction air passage portion 4 is formed. That is, the heat exchange unit 2c can be separated and coupled to the air conditioner casing 3 with the X-X line as a boundary, is installed according to the necessary air conditioning conditions, and is not installed when unnecessary, and the air conditioner casing 3 alone is installed. It will be installed.

At the facing surface portion (left side surface portion) of the heat exchange unit 2c with respect to the air conditioner casing 3, the return air Ri from the interior zone I introduced into the introduction air passage portion 4 of the air conditioner casing 3 is exhausted for heat exchange. Heat exchange unit 2c
Exhaust air 20a for heat exchange to be introduced into the exhaust air, and external air for heat exchange with the exhaust air EA in the heat exchange unit 2c to the introduced air passage part 4 of the air conditioner casing 3 The delivery port 20b is formed. On the other hand, in the air conditioner casing 3, when the heat exchange unit 2c is arranged adjacent to one end wall (right side wall) of the air conditioner casing 3 on the side where the introduction air passage section 4 is formed, heat exchange is performed. A pair of ventilation ports 19a, 19b for communicating the heat exchange exhaust gas introduction port 20a and the heat exchanged outside air delivery port 20b on the unit 2c side with the introduction air passage section 4.
Is formed on one end wall (right side wall) of the air-conditioner casing 3 on the side where the introduction air passage portion 4 is formed.

When the heat exchange unit 2c is not installed, as shown in FIG. 6, the pair of lids 29a and 29b serving as the closing means are fixed to the air conditioner casing 3 by screwing or the like, thereby Ventilation port 19a, 1
The air conditioner casing 3 is used alone, that is, the indoor unit 2a is operated independently, by closing each of the 9b.

On the upper surface side of the air conditioner casing 3, a receiving port 14a different from the receiving port 4a and a pair of delivery ports 5 are provided.
a and 5b are provided, and in the air-conditioner casing 3, a second introduction air passage portion 14 for introducing the return air Rp from the perimeter zone P through the other inlet 14a is provided.
Is formed at one end (left end) on the side opposite to the formation side of
Further, a pair of delivery air passage portions 6a, 6b for delivering the temperature-controlled air to the pair of delivery outlets 5a, 5b respectively are provided between the introduction air passage portion 4 and the second introduction air passage portion 14. 1st and 2nd
It is provided so as to sandwich the wall-shaped bodies 3a and 3b. The pair of delivery air passage portions 6a and 6b are in a non-communication state by a third wall-shaped body 3c that partitions them. Further, a return air fan 21 for blowing return air Ri and a driving motor 22 are installed above the introduction air passage portion 4, and a damper 13 for adjusting the air volume is provided.
Is installed. The first and second heat regulation heat exchangers 8a and 8b are respectively provided in the pair of delivery air passage portions 6a and 6b.
Is inclined leftward and rightward when viewed in the juxtaposed direction of the air passages (the left-right direction in FIG. 1), and is arranged in a posture that traverses the delivery air passage portions 6a and 6b (see FIGS. 3 and 4).

At the position on the lower side of the first wall-shaped body 3a, the outlet air from the inlet air passage portion 4 is ventilated to the upstream side of the first temperature control heat exchanger 8a at the adjacent outlet air passage portion 6a. The second opening 11b is provided for the purpose, and the first opening 11a is formed at the upper side position of the first wall-shaped body 3a. Filters 7a and 7b for removing dust are installed in the first and second openings 11a and 11b, respectively, and a damper 12 for adjusting the air volume that opens and closes the first opening 11a.
Is provided, and the introduction air passage portion 4 communicates with the downstream side portion of the first temperature adjustment heat exchanger 8a in the adjacent delivery air passage portion 6a by the first opening 11a.
Further, in the middle portion of the third wall-shaped body 3c, the outlet air from the second introduction air passage portion 14 is made to flow to the upstream side of the second temperature control heat exchanger 8b in the adjacent delivery air passage portion 6b. For the third
An opening 11c and a dust removing filter 7c are provided. Further, in the upper part of the pair of delivery air passage portions 6a, 6b,
The air supply fans 9a and 9b and the driving motors 10a and 10b are installed, respectively.

The heat exchange unit 2c is constructed by using a casing 28 having a rectangular parallelepiped shape as an outer wall body.
A discharge port 23 for the exhaust air EA and an intake port 24 for the outside air OA are provided on the upper surface side of 8. An outside air side air passage portion 26 for introducing outside air OA from the intake 24 into the casing 28.
And an exhaust side air passage portion 27 that discharges the exhaust air EA to the outlet 23 are defined by the wall body, and the total heat exchange portion 25 is arranged so as to extend over both air passage portions 26 and 27. There is. In the outside air side air passage portion 26, the outside air OA from the intake 24 passes through the total heat exchange portion 25 to the heat exchanged outlet 20b, and the outside air OA does not pass through the total heat exchange portion 25. A flow path leading to the heat-exchanged delivery port 20b is formed. A damper 18 for adjusting the air volume is installed at the inlet of the flow path that does not pass through the total heat exchange section 25. on the other hand,
The heat exchange exhaust gas introduction port 20a is provided in the exhaust air passage portion 27.
To the outlet 23 via the total heat exchange section 25, and a channel from the heat exchange exhaust introduction port 20a to the outlet 23 without passing through the total heat exchange section 25. . A damper 16 for adjusting the air volume is installed at the outlet of the flow path that does not pass through the total heat exchange section 25.

Next, the cooling / heating operation in the interior zone partial outside air introduction mode when the heat exchange unit 2c is installed will be described. In this partial outside air introduction mode, the damper 12 is fully closed, and the damper 13 is an intermediate state between fully closed and fully opened,
The damper 16 is adjusted to be fully closed, and the damper 18 is adjusted to be fully closed. As a result, a part of the return air Ri introduced from the receiving port 4a passes through the total heat exchanging section 25 of the heat exchanging unit 2c and is then discharged from the sending outlet 23 as the exhaust gas EA. On the other hand, the rest of the return air Ri and the outside air OA which is introduced from the intake 24 and has passed through the total heat exchange section 25 are mixed in the lower side portion of the introduction air passage section 4, and the mixture is the second opening. The air is passed through 11b and is sent to the delivery air passage portion 6a. Then, the temperature is adjusted by the first heat exchanger 8a for temperature adjustment, and the temperature-adjusted air including the outside air OA is sent out from the outlet 5a as the supply air Si to the interior zone I. Further, the return air Rp introduced from the other inlet 14a passes through the second introduction air passage portion 14 and the third opening 11c, and then the second delivery air passage portion 6 is formed.
After being ventilated to b, the temperature is adjusted by the second temperature control heat exchanger 8b, the air is circulated as the supply air Sp to the perimeter zone P from the outlet 5b.

In the operation for cooling both the interior zone I and the perimeter zone P, as shown in FIG. 7, the first solenoid valve v1 is closed and the second solenoid valve v2 is opened, and The compressor Cm is operated by setting the four-way valve vc to the cooling side switching state (state in the figure), and the high pressure refrigerant gas (shown by the thick black line in the figure) discharged from the compressor Cm is supplied to the outdoor heat exchanger 8c. By supplying, the outdoor heat exchanger 8c functions as a condenser to radiate heat to the outdoor air.

The condensed refrigerant liquid (indicated by a thick line with hatching in the figure) sent from the outdoor heat exchanger 8c is sent to the indoor unit 2a through the crossover refrigerant pipe 1a, and this refrigerant liquid is divided into The first and second electronic expansion valves ex1 and e
After passing x2, each divided flow is supplied to the first and second temperature control heat exchangers 8a and 8b, so that both the first and second temperature control heat exchangers 8a and 8b function as evaporators. Then, the supply air Si and Sp are cooled and adjusted in temperature. And the first
And, the low-pressure refrigerant gas (indicated by a white thick line in the figure) sent from each of the second temperature control heat exchangers 8a and 8b is merged and sucked into the compressor Cm via the accumulator ac.

Although not described in detail, the interior zone I
In addition, in the operation of heating the perimeter zone P, the first temperature control heat exchanger 8a and the second temperature control heat exchanger 8b function as condensers to heat and control the supply air Si, Sp to perform outdoor heat exchange. The device 8c is selectively operated as an evaporator or a condenser depending on the cooling / heating load as a whole.

Next, the interior zone outside air cooling operation (implemented during the intermediate period) when the heat exchange unit 2c is installed will be described. In this outside air cooling operation,
Damper 13 is fully closed, damper 16 is fully open, damper 18 is fully open, and basically damper 1 is
2 is adjusted to be fully open, and the first temperature control heat exchanger 8
The operation of a is stopped. As a result, all of the return air Ri introduced from the inlet 4a is ventilated to the heat exchange unit 2c, and most of the vented return air Ri does not pass through the total heat exchange section 25 and is exhausted as the exhaust air EA. It is discharged from the delivery port 23. On the other hand, most of the outside air OA introduced from the intake 24 is not passed through the total heat exchange section 25 but is ventilated to the lower side portion of the introduction air passage section 4 in the air conditioner casing 3, and the first and second The air is sent to the delivery air passage portion 6a through the two openings 11a and 11b and is delivered as air supply Si to the interior zone I.

As for the perimeter zone P, the return air Rp is the same as in the partial outside air introduction mode of the interior zone.
Is circulated to the supply air Si for the perimeter zone P via the second temperature control heat exchanger 8b which is in the operating state or stopped.

In the interior zone outside air cooling operation, a dehumidifying operation can be carried out as necessary. In this dehumidifying operation, the first dehumidifying operation is performed.
The temperature control heat exchanger 8a is caused to function as an evaporator, and the damper 12 is adjusted to a half open state. As a result, the introduced outside air OA
Part of the air passes through the second opening 11b and is cooled and dehumidified by the first temperature control heat exchanger 8a, and the rest of the introduced outside air OA passes through the damper 12 and is downstream of the first temperature control heat exchanger 8a. Low-temperature low-humidity outside air OA that has been ventilated to the side air passage portion and cooled and dehumidified by the first temperature adjustment heat exchanger 8a, and outside air that has directly passed to the downstream air passage portion of the first temperature adjustment heat exchanger 8a. By mixing with OA, conditioned air whose humidity and temperature are appropriately adjusted is obtained, and this conditioned air is delivered as air supply Si to the interior zone I.

On the other hand, in the configuration (the configuration shown in FIG. 6) in which the communication ports 19a and 19b are closed by the lids 29a and 29b without installing the heat exchange unit 2c, the return air Ri from the interior zone I and the perimeter zone are provided. Return air from P Rp
The total amount of each of them is temperature-controlled by the first and second heat exchangers 8a and 8b for temperature adjustment, and the supply air S to the interior zone I is respectively supplied.
i and the supply air Sp to the perimeter zone P are circulated and delivered, and the outside air is not taken in.

[Other Embodiments] In the above embodiment, the heat exchange unit 2c for the interior zone I is provided, but the heat exchange unit 2c for the interior zone I and the heat exchange unit 2 for the perimeter zone P are shown.
It may be equipped with each of c '. An embodiment in this case will be described with reference to FIG. 8, and the portions common to FIG. 1 are denoted by the same reference numerals. In FIG. 8, the second heat exchange unit 2c ′ for the perimeter zone P is the air conditioner casing 3
It is configured such that it can be selectively installed in a state in which it is arranged adjacent to one end wall (left side wall) on the side where the second introduction air passage portion 14 is formed, and in a non-arranged state. Exhaust gas for heat exchange for introducing the return air Rp from the perimeter zone P introduced into the second introduction air passage portion 14 to the facing surface portion (right side surface portion) of the second heat exchange unit 2c ′ with respect to the air conditioner casing 3. An inlet 32a and a heat-exchanged outside air outlet 32b for delivering the outside air OA that has undergone heat exchange with the exhaust air EA to the second introduction air passage portion 14 are formed. On the other hand, in the state where the second heat exchange unit 2c ′ is arranged adjacent to the one end wall (left side wall) of the air conditioner casing 3, the heat exchange exhaust introduction port 3 on the second heat exchange unit 2c ′ side is arranged.
2a and a pair of ventilation ports 31a, 31 for communicating the heat-exchanged outside air outlet 32b with the second introduction air passage portion 14, respectively.
b is formed on the one end wall (left side wall) of the air conditioner casing 3.

In this case, as in the case of the first wall-shaped body 3a, openings are provided at the upper side and the lower side of the second wall-shaped body 3b, and a filter 7f for removing dust is provided at each of the openings. , 7 g are installed, and a damper 41 for adjusting the air volume is provided in the upper opening. Further, a second return air fan 42 for blowing the return air Rp and a driving motor 43 are installed above the second introduction air passage portion 14, and the upper inlet portion of the second introduction air passage portion 14 is installed. Is a damper 3 for adjusting the air flow
8 is installed, and the amount of the return air Rp from the perimeter zone P discharged to the outside is adjusted by opening / closing the damper 38. Although not shown, when the second heat exchange unit 2c is not installed, a pair of lids serving as closing means are fixed to the air conditioner casing 3 by screwing or the like to close each of the communication ports 31a and 31b. To do.

Further, an outlet 33 for the exhaust air EA and an inlet 34 for the outside air OA are provided on the upper surface side of the casing of the second heat exchange unit 2c ', and the outside air OA from the inlet 34 is introduced into the casing. An outside air side air passage portion 35 and an exhaust side air passage portion 36 that discharges the exhaust air EA to the outlet 33 are defined by a wall body, and both air passage portions 35 and 36 are formed.
The total heat exchange unit 30 is arranged so as to extend over In the outside air side air passage portion 35, the outside air OA from the intake port 34 reaches the heat exchanged outlet 32b via the total heat exchange portion 30, and the outside air OA does not pass through the total heat exchange portion 30. A flow path to the heat-exchanged delivery port 32b is formed. A damper 40 for adjusting the air volume is installed at the inlet of the flow path that does not pass through the total heat exchange section 30. On the other hand, the exhaust side air passage portion 36
From the heat exchange exhaust inlet 32a to the total heat exchange section 3
0 through the exhaust passage 33 for heat exchange and the outlet 33 without passing through the total heat exchange section 30.
And a flow path leading to. Further, a damper 39 for adjusting the air volume is installed at the outlet of the flow path that does not pass through the total heat exchange unit 30.

In the above-described embodiment, the heat exchanger for temperature adjustment 8a is a heat exchanger that functions as an evaporator or a condenser in a heat pump circuit. However, the heat exchanger for temperature adjustment is not limited to this, and for example, a cold temperature may be used. A heat exchanger such as a water coil or a steam coil may be adopted.

In the above embodiment, the closing means 29a, 29b.
Although the structure shown in Fig. 1 is composed of a lid, a damper may be used instead of the lid.

In the above embodiment, the case where the air conditioner of the present invention is applied to the separate type heat pump type air conditioner is shown, but it can be applied to other types of air conditioners.

In the above embodiment, the heat exchange unit 2c is constructed as a total heat exchange type. However, other than this, it may be constructed so that only sensible heat is exchanged.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a front structural view in which a heat exchange unit is connected.

FIG. 2 is a plan view in which a heat exchange unit is connected.

FIG. 3 is a sectional view taken along line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

5 is a sectional view taken along line XX in FIG.

FIG. 6 is a front structural view showing a closing means.

FIG. 7 is a refrigerant circuit diagram showing a cooling operation state.

FIG. 8 is a front structural view showing another embodiment.

[Explanation of symbols]

 3 Air-conditioner casing I Air-conditioning target area Ri Return air 4 Introduced air passage Si supply 8a Temperature control heat exchanger EA Exhaust air OA Outside air 2c Heat exchange unit 20a Heat exchange exhaust inlet 20b Heat exchanged outside air outlet 19a, 19b Vents 29a, 29b Closing means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuzo Akita 28 Hiraide Industrial Park, Utsunomiya City, Tochigi Prefecture Kubota Train Co., Ltd.Tochigi Plant (72) Inventor Masaaki Shinohara 28 Hiraide Industrial Park, Utsunomiya City, Tochigi Prefecture Kubotat Lane Shares Company Tochigi factory

Claims (1)

[Claims] 1. An introduction air passage part (4) for introducing return air (Ri) from an air conditioning target area (I) into an air conditioner casing (3), and derivation from the introduction air passage part (4). An air conditioner provided with a temperature control heat exchanger (8a) for controlling the temperature of air as air supply (Si) to the air conditioning target area (I), wherein the introduction air passage section (4) is Air conditioner casing (3)
A heat exchange unit (2c) that is formed at one end of the air conditioner casing and is separate from the air conditioner casing (3), and that exchanges heat between exhaust air (EA) discharged to the outside and outside air (OA) taken from the outside. But,
The heat formed on the facing surface portion of the heat exchange unit (2c) with respect to the air conditioner casing (3) in a state of being arranged adjacent to the one end wall of the air conditioner casing (3) on the side where the introduction air passage is formed. Replacement exhaust inlet (20
a) and a pair of ventilation ports (19) for communicating the heat exchanged outside air outlet (20b) with the introduction air passage (4).
a, 19b) is formed on the one end wall of the air conditioner casing (3) on the side where the introduction air passage is formed, and each of the ventilation ports (19a, 19b) is provided when the heat exchange unit (2c) is not installed. Means for closing the
Air conditioners provided with 9a, 29b).