JP5332534B2 - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning device utilizing geothermal heat, capable of performing dehumidification without excessively lowering indoor temperature. <P>SOLUTION: This air conditioning device includes: a buried flow channel 30 opened outdoors at its opening end 31 of one side, having an intermediate part 32 buried in the ground, and drawn indoors at its opening end 33 of the other side; and a dehumidifying unit 40 disposed indoors. The dehumidifying unit 40 includes: a dehumidification-side flow channel 40a connected with the opening end 33, and supplying the mixed air of the outside air OA, introduced from the buried flow channel 30, and the return air RA indoors; a regeneration-side flow channel 40b opened outdoors and indoors at its opening end of one side and an opening end of the other side, respectively, and discharging the indoor air outdoors; a dehumidifying rotor 42 disposed over the dehumidification-side flow channel 40a and the regeneration-side flow channel 40b, and holding an adsorbent for adsorbing the moisture from the mixed air passing through the dehumidification-side flow channel 40a; and a regeneration heat exchanger 51 disposed in the regeneration-side flow channel 40b, and heating the adsorbent to release the moisture adsorbed by the adsorbent. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an air conditioner.

  Conventionally, as an air conditioning apparatus, what was described, for example in patent document 1 is known. This air conditioner is an engine-driven type, and an underground pipe having one end opened to the outside and a middle portion buried in the ground is connected to the air intake port of the indoor unit heat exchanger. In this case, since the underground temperature changes little throughout the year, the outside air (outside air) introduced for indoor ventilation is passed through the underground pipe before supplying it to the indoor unit heat exchanger. Can warm the outside air, and can cool the outside air in summer. Thereby, the temperature of the outside air supplied to the indoor unit heat exchanger is brought close to the indoor target temperature (indoor set temperature), and the air conditioning load of the air conditioner is reduced correspondingly, and the air conditioning efficiency is improved.

In addition, in this air conditioner, in order to improve the heating capacity in winter, the outside air warmed by underground pipes is further warmed by engine exhaust gas, engine coolant, hot water exhaust heat from the attached cogeneration unit, etc. Has also been proposed.
JP 2006-10090 A

  By the way, in the air conditioning apparatus of Patent Document 1, for example, cooling of the outside air in the underground pipe may be uncomfortable because the humidity remains high even if the temperature falls because the sensible heat ratio is high and the amount of dehumidification is small. Therefore, in order to dehumidify the humidity introduced by the introduced outside air in summer and the humidity generated indoors, the air conditioning apparatus is dehumidified by performing a cooling operation or a dehumidifying operation. In general, in air conditioning control, on / off control is performed based on room temperature, so if the dehumidifying operation of the air conditioner is started especially when the temperature is not so high and the humidity is high, it becomes too cold due to the temperature drop, When the set temperature is raised, the operation of the air conditioner stops and the dehumidification becomes incomplete and may become uncomfortable.

  An object of the present invention is to provide an air conditioner that uses geothermal heat and that can perform dehumidification without excessively reducing the indoor temperature.

In order to solve the above-mentioned problems, the invention according to claim 1 is characterized in that the opening end on one side is opened outdoors, the middle part is buried in the ground, and the opening end on the other side is drawn indoors. An underground channel, and a dehumidifying unit installed indoors, and the dehumidifying unit is connected to an open end on the other side of the underground channel and is externally introduced from the underground channel Dehumidifying side flow path for supplying mixed air of indoor air and indoor air, and a regeneration side flow in which the opening end on one side and the opening end on the other side are open to the outdoors and indoors, and the indoor air is discharged to the outdoors A dehumidification regeneration member that is provided in a path, the dehumidification side flow path, and the regeneration side flow path and carries an adsorbent that adsorbs moisture from the mixed air that passes through the dehumidification side flow path, and the regeneration side flow path. provided, and a heating means for releasing moisture adsorbed by heating the adsorbent in the adsorbent, before The underground passage is opened indoors via a damper, the damper is in an open state, and the indoor air is introduced into the underground passage via the damper, whereby the dehumidification side passage The gist is to adjust the amount of external air introduced into the body.

  According to this configuration, since the underground temperature has a small temperature change throughout the year, it can be warmed in winter and cooled in summer by passing external air through the underground channel. At this time, the moisture content brought in by the introduced external air and the humidity content generated indoors are such that when the mixed air passes through the dehumidification side flow path, moisture is adsorbed on the adsorbent carried by the heat exchanger. Adsorbed and dehumidified. The moisture adsorbed by the adsorbent is released by heating the adsorbent by the heating means, and is discharged to the outside together with the indoor air passing through the regeneration side flow path. Thus, when introducing external air from the underground channel, the mixed air can be dehumidified by the dehumidifying means, and for example, dehumidification can be performed without excessively reducing the indoor temperature.

  According to a second aspect of the present invention, in the air conditioner according to the first aspect of the present invention, a gas engine, a compressor that is driven by the gas engine to suck in the refrigerant and compresses and discharges the sucked refrigerant, and cooling operation Is an outdoor unit having an outdoor unit heat exchanger that functions as a refrigerant condenser and functions as a refrigerant evaporator during heating operation, and functions as a refrigerant evaporator during cooling operation and as a refrigerant condenser during heating operation. An indoor unit having a functioning indoor unit heat exchanger and a flow path until the refrigerant discharged from the compressor is sucked into the compressor are formed in the outdoor unit heat exchanger and the indoor unit heat exchanger. A refrigerant circuit that circulates refrigerant and a hot water circuit that circulates hot water that exchanges heat between exhaust heat of the gas engine, and the heating means is provided in the hot water circuit. And summarized in that the hot water to the ring is a regenerative heat exchanger for heating the indoor air through the regeneration side passage.

  According to this configuration, the indoor air passing through the regeneration side flow path is heated by the regeneration heat exchanger (warm water) that uses the exhaust heat of the gas engine to release (regenerate) the moisture adsorbed by the adsorbent. Can be done.

  A third aspect of the present invention is the air conditioning apparatus according to the first aspect, further comprising a power generation side hot water circuit that circulates hot water that exchanges heat with the exhaust heat of the power generation unit, and the heating means includes the power generation unit The gist of the present invention is a regenerative heat exchanger that is provided in a side hot water circuit and heats indoor air that passes through the regeneration side flow path using hot water circulating in the power generation side hot water circuit.

  According to this configuration, the indoor air passing through the regeneration-side flow path is heated by the regeneration heat exchanger (warm water) that uses the exhaust heat of the power generation unit to release (regenerate) the moisture adsorbed by the adsorbent. Can be done.

  According to a fourth aspect of the present invention, in the air conditioner according to the first aspect, the dehumidification side flow path and the regeneration side flow path are connected to an open end on the other side of the underground buried flow path. A dehumidified state in which mixed air of outside air and indoor air introduced from the underground channel is supplied indoors, and one open end and the other open end are opened outdoors and indoors. The heat exchanger is configured with one and the other of the first flow path and the second flow path that can be selectively switched to a regeneration state in which air can be discharged to the outside, and the heat exchanger includes the first flow path and the second flow path. It is composed of a first heat exchanger and a second heat exchanger respectively provided in two flow paths, and is driven by the gas engine and the gas engine to suck in the refrigerant, and compresses and discharges the sucked refrigerant. An outdoor unit having a compressor and discharged from the compressor A refrigerant circuit that forms a flow path until the medium is sucked into the compressor and circulates the refrigerant through the first and second heat exchangers, and functions of the first and second heat exchangers are condensed. And a refrigerant circuit switching unit that selectively switches as an evaporator and an evaporator, wherein the heating unit is provided in one of the first and second flow paths in the regeneration state and functions as a refrigerant condenser The gist is to heat the adsorbent carried on the first or second heat exchanger by the refrigerant, the first or second heat exchanger.

  According to the same configuration, the adsorbent carried on the first or second heat exchanger provided in any one of the first and second flow paths in the regeneration state and functioning as a refrigerant condenser. By heating with a refrigerant, moisture adsorbed on the adsorbent can be released (regenerated).

  In this invention, it is an air conditioning apparatus using geothermal heat, Comprising: It can provide the air conditioning apparatus which can perform dehumidification, without reducing indoor temperature too much.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a circuit diagram showing an air conditioner according to the present embodiment. As shown in the figure, the interior (indoor) of the building 10 is partitioned into three spaces by a floor 11 and a ceiling 12; a floor 10a, a room 10b, and a ceiling 10c. The outdoor unit 21 is provided outside the building 10 (outdoors), and the embedded indoor unit 22 is provided in the ceiling 10c.

  The outdoor unit 21 is provided with a gas engine 23 and a compressor 24 driven by the gas engine 23. The gas engine 23 is driven by combustion of supplied gas. Then, the exhaust gas of the gas engine 23 passes through the exhaust heat exchanger 29 and is discharged outside. The compressor 24 is connected to the refrigerant pipes 20a and 20b via a four-way valve (not shown). The compressor 24 sucks refrigerant from one of the refrigerant pipes 20a and 20b and compresses the drawn refrigerant to form a refrigerant pipe. It discharges to either one of 20a and 20b.

  The outdoor unit 21 is provided with an outdoor unit heat exchanger 25 connected to the refrigerant pipe 20b. The outdoor unit heat exchanger 25 functions as a refrigerant condenser during the cooling operation and functions as a refrigerant evaporator during the heating operation, and is connected to the indoor unit 22 via the refrigerant pipe 20c.

  On the other hand, an indoor unit heat exchanger 26 connected to the refrigerant pipe 20a is installed in the indoor unit 22. The indoor unit heat exchanger 26 functions as a refrigerant evaporator during cooling operation and functions as a refrigerant condenser during heating operation. The indoor unit 22 includes a refrigerant pipe 20d connected to the indoor unit heat exchanger 26. The expansion valve 27 connected via is installed. The expansion valve 27 is connected to the outdoor unit heat exchanger 25 via the refrigerant pipe 20c.

  The refrigerant pipes 20a to 23d form a flow path until the refrigerant discharged from the compressor 24 is sucked into the compressor 24, and circulate the refrigerant to the outdoor unit heat exchanger 25 and the indoor unit heat exchanger 26. The circuit 20 is configured.

  An underground channel 30 is installed indoors. The underground channel 30 has an open end 31 on one side opened to the outside by a ceiling 10c, a midway portion (underground pipe) 32 is embedded in the ground, and an open end 33 on the other side is behind the ceiling. 10c. Further, the underground buried flow path 30 is opened to the room 10 b via the damper 34. Therefore, the underground channel 30 introduces mixed air of outside air (hereinafter referred to as “outside air OA”) and indoor air (hereinafter referred to as “returned air RA”) into the ceiling 10c. Since the underground temperature has a small temperature change throughout the year, the outdoor air OA is warmed in the winter and cooled in the summer by passing through the underground channel 30.

  A dehumidifying unit 40 as a dehumidifying means is installed on the ceiling 10c. The dehumidifying unit 40 has a dehumidifying side channel 40 a and a regeneration side channel 40 b that are substantially independent of each other and are partitioned by a partition wall 41. A dehumidifying rotor 42 and a sensible heat rotor 43 that are rotatable about a rotating shaft that extends on the partition wall 41 are arranged side by side. The dehumidification rotor 42 and the sensible heat rotor 43 can be driven to rotate independently of each other, and have a honeycomb shape that allows the air flow in the dehumidification side flow path 40a or the regeneration side flow path 40b regardless of the respective rotation positions. Yes. The dehumidifying rotor 42 carries an adsorbent such as silica gel or zeolite.

  The dehumidification side channel 40 a is connected to the open end 33 of the underground channel 30 and is connected to the indoor unit 22 via the air pipe 44. Accordingly, the mixed air of the outside air OA and the return air RA introduced from the underground channel 30 is introduced into the indoor unit 22 through the dehumidification side channel 40 a and the air pipe 44. On the other hand, the regeneration-side flow path 40 b is opened to the ceiling 10 c and opened to the outdoors via the air pipe 45. A blower fan 46 arranged closer to the air pipe 45 than the dehumidifying rotor 42 is installed in the regeneration side flow path 40b. Therefore, the return air RA introduced into the regeneration side flow path 40 b is sent to the blower fan 46 and is discharged to the outside as the exhaust EA through the air pipe 45.

  Further, a regeneration heat exchanger 51 as a heating means disposed between the dehumidification rotor 42 and the sensible heat rotor 43 is installed in the regeneration side flow path 40b. The regenerative heat exchanger 51 is connected to a water pipe 50 a connected to the exhaust heat exchanger 29. The water pipe 50 a is connected to the hot water pump 52 via the exhaust heat exchanger 29. Therefore, the hot water flowing through the water pipe 50 a exchanges heat with the exhaust heat of the gas engine 23.

  The hot water pump 52 is connected to the on-off valve 53 via a water pipe 50b. The on-off valve 53 is connected to the regenerative heat exchanger 51 through a water pipe 50c. Therefore, when the on-off valve 53 is in the open state, when the hot water pump 52 is driven, hot water that exchanges heat with the exhaust heat of the gas engine 23 circulates in the water pipes 50a to 50c. The water pipes 50 a to 50 c constitute the hot water circuit 50. Then, the regeneration heat exchanger 51 heats the return air RA passing through the regeneration-side flow path 40b with warm water circulating in the warm water circuit 50.

Here, the operation of the present embodiment will be described.
First, the flow of the refrigerant will be described.
[Air conditioning]
During the cooling operation, the compressor 24 driven by the gas engine 23 sucks the refrigerant from the refrigerant pipe 20a and compresses the sucked refrigerant and discharges it to the refrigerant pipe 20b. Thereby, the refrigerant flows in the direction of arrow B. Then, the refrigerant exiting the compressor 24 is guided to the outdoor unit heat exchanger 25. Here, the refrigerant is condensed and liquefied by taking heat away from the outside air. Thereafter, the refrigerant that has passed through the refrigerant pipe 20c and has been decompressed by the expansion valve 27 of the indoor unit 22 takes the heat of the room and vaporizes in the indoor unit heat exchanger 26. Thereafter, the refrigerant returns to the compressor 24 through the refrigerant pipe 20a.
[heating]
During the heating operation, the compressor 24 driven by the gas engine 23 sucks the refrigerant from the refrigerant pipe 20b and compresses the sucked refrigerant and discharges it to the refrigerant pipe 20a. Thereby, the refrigerant flows in the direction of arrow A. And the refrigerant | coolant which went out of the compressor 24 is guide | induced to the indoor unit heat exchanger 26 through the refrigerant | coolant piping 20a. Here, the refrigerant releases heat indoors and condenses and liquefies. Thereafter, the refrigerant decompressed by the expansion valve 27 of the indoor unit 22 is guided to the outdoor unit heat exchanger 25 through the refrigerant pipe 20c. The refrigerant absorbs heat from the outside air in the outdoor unit heat exchanger 25 and vaporizes. Thereafter, the refrigerant returns to the compressor 24 through the refrigerant pipe 20b.

Next, the air flow will be described. During the cooling or heating operation, the damper 34 is in an open state, and an appropriate amount of outside air OA is introduced by introducing the return air RA into the underground channel 30.
[Air conditioning]
During the cooling operation, the introduced outside air OA is cooled in advance by passing through the underground channel 30 and guided to the dehumidification side channel 40 a of the dehumidification unit 40. At this time, the dehumidifying rotor 42 and the sensible heat rotor 43 are rotating. The outside air OA (and the return air RA) guided to the dehumidification side flow path 40a passes through the dehumidification rotor 42, so that the contained moisture is adsorbed and dehumidified. The adsorption heat generated at this time is cooled by the return air RA by passing through the sensible heat rotor 43.

The air that has been dehumidified through the dehumidifying unit 40 (dehumidification side channel 40a) is guided to the indoor unit 22, cooled by the indoor unit heat exchanger 26, and blown out into the room 10b as the supply air SA.
Further, the return air RA guided to the regeneration side flow path 40 b of the dehumidifying unit 40 exchanges heat with the outside air OA by the sensible heat rotor 43, and is further heated by the regeneration heat exchanger 51. The return air RA heats the adsorbent when passing through the dehumidifying rotor 42 to desorb moisture, thereby drying the dehumidifying rotor 42. That is, when the dehumidification rotor 42 is regenerated, the exhaust heat of the gas engine 23 (outdoor unit 21) is utilized by the regenerative heat exchanger (warm water). Accordingly, the moist air is sent out by the blower fan 46 and discharged to the outside as exhaust EA.
[heating]
During the heating operation, the introduced outside air OA is warmed in advance by passing through the underground channel 30 and guided to the dehumidification side channel 40 a of the dehumidification unit 40. At this time, the dehumidifying rotor 42 is stopped, and the sensible heat rotor 43 is rotating or stopped. The outside air OA (and the return air RA) guided to the dehumidification side flow path 40a passes through the dehumidification rotor 42 and, when the sensible heat rotor 43 is rotating, exchanges heat with this, and the sensible heat rotor 43 stops. If it is, it passes through this and is guided to the indoor unit 22. And it is warmed by the indoor unit heat exchanger 26 and blown out into the room 10b as the supply air SA.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In the present embodiment, the humidity introduced by the introduced outside air OA and the humidity generated indoors are the dehumidification rotor 42 when the mixed air of the outside air OA and the return air RA passes through the dehumidification side passage 40a. Moisture is adsorbed by the adsorbent carried on the surface and dehumidified. The moisture adsorbed by the adsorbent is released by heating the adsorbent in the regeneration heat exchanger 51, and is discharged outdoors together with the return air RA passing through the regeneration side flow path 40b. As described above, when the outside air OA is introduced from the underground channel 30, the dehumidifying unit 40 can dehumidify the mixed air of the outside air OA and the return air RA. For example, dehumidification can be performed without excessively reducing the indoor temperature. It can be carried out.

  As described above, by performing the sensible heat treatment and the latent heat treatment separately, for example, when the air conditioner without the dehumidifying unit 40 is cooled or dehumidified to perform dehumidification, the indoor temperature is excessively lowered or dehumidified. Discomfort caused by can be reduced.

  (2) In the present embodiment, the release (regeneration) of moisture adsorbed by the adsorbent of the dehumidifying rotor 42 is regenerated by the regenerative heat exchanger 51 (hot water) that uses the exhaust heat of the gas engine 23 (outdoor unit 21). The return air RA passing through the side flow path 40b can be heated.

  (3) In the present embodiment, the exhaust heat of the gas engine 23 (outdoor unit 21) can be used during the cooling or dehumidifying operation in the summer, so that the load on the outdoor unit 21 and the like can be reduced, and the summer It is possible to increase energy consumption by increasing the exhaust heat utilization rate.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. Note that the second embodiment employs a dehumidification unit including two channels (first channel and second channel) that can be selectively switched as a dehumidification channel and a regeneration channel. Since the configuration is different from that of the first embodiment, detailed description of the same portions is omitted.

  FIG. 2 is a circuit diagram showing the air conditioning apparatus according to the present embodiment. As shown in the figure, a dehumidifying unit 60 as a dehumidifying means installed on the ceiling 10c has a first flow path 60a and a second flow path 60b that are independent of each other. And the 1st heat exchanger 61 and the 2nd heat exchanger 62 which comprise a dehumidification reproduction | regeneration member are accommodated in the 1st flow path 60a and the 2nd flow path 60b, respectively. Adsorbents such as silica gel and zeolite are supported on the fins of the first and second heat exchangers 61 and 62, respectively.

  The first flow path 60a is connected to the first three-way damper 71 through the air pipe 63a, and is connected to the second three-way damper 72 through the air pipe 63b. The first flow path 60a is connected to the third three-way damper 73 through the air pipe 63c, and is connected to the fourth three-way damper 74 through the air pipe 63d.

  Similarly, the second flow path 60b is connected to the first three-way damper 71 via the air pipe 64a, and is connected to the second three-way damper 72 via the air pipe 64b. The second flow path 60b is connected to the third three-way damper 73 via the air pipe 64c, and is connected to the fourth three-way damper 74 via the air pipe 64d.

  The first three-way damper 71 is connected to the open end 33 of the underground channel 30, and the second three-way damper 72 is opened to the outdoors via the air pipe 65. The third three-way damper 73 is connected to the indoor unit 22 via an air pipe 66, and the fourth three-way damper 74 is opened to the ceiling 10 c via an air pipe 67. A blower fan 68 is installed in the air pipe 65.

  Therefore, by switching the first to fourth three-way dampers 71 to 74, the first flow path 60 a is connected to the open end 33 of the underground buried flow path 30 and introduced from the underground buried flow path 30. While the mixed air of the outside air OA and the return air RA is switched to a state where it can be supplied to the indoor unit 22, the second flow path 60b has an opening end on one side and an opening end on the other side open to the outdoors and the ceiling 10c. The return air RA is switched to a state where it can be discharged outdoors. Alternatively, the first flow path 60a is switched to a state in which the opening end on one side and the opening end on the other side are open to the outside and the ceiling back 10c so that the return air RA can be discharged to the outside, and the second flow path 60b is The mixed air of the outside air OA and the return air RA, which is connected to the open end 33 of the underground channel 30 and introduced from the underground channel 30, is switched to a state in which it can be supplied to the indoor unit 22.

  In addition, it is in the state which can be supplied to the indoor unit 22 (indoor) with the mixed air of the external air OA and the return air RA which were connected to the opening end 33 of the underground channel 30 and introduced from the underground channel 30. One of the first and second flow paths 60a and 60b is dehumidified by adsorbing moisture in the air in the first heat exchanger 61 or the second heat exchanger 62 disposed in the flow paths 60a and 60b. Yes (dehumidified state). On the other hand, the return air RA introduced into the air pipe 65 from the first flow path 60a or the second flow path 60b is sent to the blower fan 68 and discharged to the outside as exhaust EA.

  A refrigerant pipe 75a branched from the refrigerant pipe 20a is connected to a four-way valve 76 as refrigerant circuit switching means, and the four-way valve 76 is connected to the first heat exchanger 61 through a refrigerant pipe 75b. . Similarly, the refrigerant pipe 75c branched from the refrigerant pipe 20b is connected to the four-way valve 76, and the four-way valve 76 is connected to the second heat exchanger 62 via the refrigerant pipe 75d. The refrigerant pipes 75a and 75b are provided with on-off valves 77 and 78, respectively. Further, the first and second heat exchangers 61 and 62 are connected via an expansion valve 79. The refrigerant pipes 75a to 75d connected to the refrigerant pipes 20a and 20b constitute a refrigerant circuit 75.

  Therefore, for example, during cooling operation, part of the refrigerant flowing in the direction of the arrow B through the refrigerant pipe 20b is guided to the four-way valve 76 through the refrigerant pipe 75c, and the first heat exchanger is passed through the refrigerant pipe 75b by the four-way valve 76. Suppose that it is led to 61. At this time, in the first heat exchanger 61 functioning as a refrigerant condenser, the refrigerant is condensed and liquefied by heat being taken away by the air flowing through the first flow path 60a. Thereafter, the refrigerant is depressurized by the expansion valve 79, and the second heat exchanger 62 functioning as an evaporator of the refrigerant takes the heat of the air flowing through the second flow path 60b and vaporizes it. Thereafter, the refrigerant is guided to the refrigerant pipe 75a via the refrigerant pipe 75d and the four-way valve 76, and merges with the refrigerant flowing through the refrigerant pipe 20a.

  Alternatively, a part of the refrigerant flowing in the direction of arrow B through the refrigerant pipe 20b is led to the four-way valve 76 via the refrigerant pipe 75c, and is led to the second heat exchanger 62 via the refrigerant pipe 75d by the four-way valve 76. To do. At this time, in the second heat exchanger 62 functioning as a refrigerant condenser, the refrigerant is condensed and liquefied by heat being taken away by the air flowing through the second flow path 60b. Thereafter, the refrigerant is depressurized by the expansion valve 79, and the first heat exchanger 61 functioning as an evaporator of the refrigerant takes the heat of the air flowing through the first flow path 60a and vaporizes it. Thereafter, the refrigerant is guided to the refrigerant pipe 75a through the refrigerant pipe 75b and the four-way valve 76, and merges with the refrigerant flowing through the refrigerant pipe 20a.

  One of the first and second heat exchangers 61 and 62 functioning as a refrigerant condenser desorbs moisture adsorbed by heating the adsorbent with the refrigerant (heating means). Accordingly, any one of the first and second flow paths 60a and 60b in which the opening end on one side and the opening end on the other side are open to the outdoors and the ceiling 10c (indoor) and the return air RA can be discharged to the outdoors. On the other hand, the moisture desorbed by the heat exchangers 61 and 62 together with the return air RA is discharged outdoors (regenerated state).

Here, the operation of the present embodiment will be described.
First, the flow of the refrigerant will be described.
[Air conditioning]
Since the flow of the refrigerant circulating through the refrigerant circuit 20 (the outdoor unit heat exchanger 25 and the indoor unit heat exchanger 26) during the cooling operation is the same as that in the first embodiment, the refrigerant circuit 75 (first and The flow of the refrigerant circulating through the second heat exchangers 61 and 62) will be described. It is assumed that the on-off valves 77 and 78 are open. Further, the first and second flow paths 60a and 60b are respectively switched to the regenerated state and the dehumidified state by the first to fourth three-way dampers 71 to 74, and the first and second heat exchanges are performed by the four-way valve 76. Assume that the vessels 61 and 62 are switched to function as a condenser and an evaporator, respectively. That is, it is assumed that the first and second flow paths 60a and 60b constitute a regeneration side flow path and a dehumidification side flow path, respectively.

  A part of the refrigerant that leaves the compressor 24 and flows in the direction of arrow B is led to the four-way valve 76 of the dehumidifying unit 60 through the refrigerant pipe 75 c and further to the first heat exchanger 61. Here, the refrigerant is deprived of heat by the return air RA, condensed and liquefied, and warms the first heat exchanger 61. Thereafter, the refrigerant depressurized by the expansion valve 79 takes the heat of the outside air OA (and the return air RA) introduced from the underground channel 30 by the second heat exchanger 62 and vaporizes. At this time, the outside air OA (and the return air RA) introduced from the underground channel 30 is cooled by the second heat exchanger 62. At the same time, the moisture of the outside air OA (and the return air RA) introduced from the underground channel 30 is adsorbed by the adsorbent of the second heat exchanger 62. Thereafter, the refrigerant returns to the compressor 24 through the refrigerant pipe 75a.

Here, the moisture saturation time of the adsorbent of the second heat exchanger 62 (first heat exchanger 61) is monitored by, for example, a timer, and the first to fourth three-way dampers 71 are matched to the saturation time. -74 and the four-way valve 76 are switched. At this time, the first and second flow paths 60a and 60b are switched to the dehumidified state and the regenerated state by the first to fourth three-way dampers 71 to 74, respectively, and the first and second heat exchangers are switched by the four-way valve 76. 61 and 62 are switched to function as an evaporator and a condenser, respectively. Needless to say, the first and second flow paths 60a and 60b constitute a dehumidification side flow path and a regeneration side flow path, respectively. Accordingly, the refrigerant guided to the four-way valve 76 is guided to the second heat exchanger 62, and is deprived of heat by the return air RA to be condensed and liquefied, and the second heat exchanger 62 in the saturated state is heated. To do. Thereafter, the refrigerant depressurized by the expansion valve 79 takes the heat of the outside air OA (and the return air RA) introduced from the underground passage 30 by the first heat exchanger 61 and vaporizes. At this time, the first heat exchanger 61 adsorbs moisture in the outside air OA (and the return air RA) introduced from the underground channel 30. Thereafter, the refrigerant returns to the compressor 24 through the refrigerant pipe 75a.
[heating]
During the heating operation, the flow of the refrigerant circulating through the refrigerant circuit 20 (the outdoor unit heat exchanger 25 and the indoor unit heat exchanger 26) is the same as that in the first embodiment. Moreover, the on-off valves 77 and 78 are in a closed state, and the refrigerant is not guided to the dehumidifying unit 60 side.

Next, the air flow will be described. During the cooling or heating operation, the damper 34 is in an open state, and an appropriate amount of outside air OA is introduced by introducing the return air RA into the underground channel 30.
[Air conditioning]
First, the first and second flow paths 60a and 60b are respectively switched to the regenerated state and the dehumidified state by the first to fourth three-way dampers 71 to 74, and the first and second heat exchanges are performed by the four-way valve 76. Assume that the vessels 61 and 62 are switched to function as a condenser and an evaporator, respectively.

  During the cooling operation, the introduced outside air OA is cooled in advance by passing through the underground buried flow path 30, and is guided to the second flow path 60b in which the second heat exchanger 62 is disposed through the first three-way damper 71. . The outside air OA (and the return air RA) guided to the second flow path 60b passes through the second heat exchanger 62, so that the contained moisture is adsorbed and dehumidified. Then, the air dehumidified through the second heat exchanger 62 is guided to the indoor unit 22 through the third three-way damper 73, cooled by the indoor unit heat exchanger 26, and supplied to the indoor 10b. As blown out.

  In addition, the return air RA guided to the dehumidifying unit 60 is guided to the first flow path 60 a where the first heat exchanger 61 is disposed through the fourth three-way damper 74. The return air RA is sent out by the blower fan 46 through the second three-way damper 72 together with the moisture desorbed by heating in the first heat exchanger 61 and is discharged to the outside as exhaust EA.

  Then, when the moisture saturation time of the adsorbent of the second heat exchanger 62 (first heat exchanger 61) is reached by the setting of the timer described above, the first to fourth three-way dampers 71 to 74 and the four-way valve 76 are used. Switches. As a result, the outside air OA (and the return air RA) introduced from the underground channel 30 is guided through the first three-way damper 71 to the first channel 60a where the first heat exchanger 61 is disposed. . The outside air OA (and the return air RA) guided to the first flow path 60a passes through the first heat exchanger 61, so that the contained moisture is adsorbed and dehumidified. The dehumidified air passing through the first heat exchanger 61 is guided to the indoor unit 22 through the third three-way damper 73, cooled by the indoor unit heat exchanger 26, and supplied to the indoor 10b. As blown out.

In addition, the return air RA guided to the dehumidifying unit 60 is guided to the second flow path 60 b where the second heat exchanger 62 is disposed through the fourth three-way damper 74. The return air RA is sent out by the blower fan 46 through the second three-way damper 72 together with the moisture desorbed by heating in the second heat exchanger 62 and is discharged to the outside as exhaust EA.
[heating]
During the heating operation, the introduced outside air OA is preliminarily warmed by passing through the underground channel 30 and is guided to the indoor unit 22 through the dehumidifying unit 60. And it is warmed by the indoor unit heat exchanger 26 and blown out into the room 10b as the supply air SA.

As described above in detail, according to the present embodiment, the following effects can be obtained in addition to the effect (1) in the first embodiment.
(1) In the present embodiment, the first heat exchanger 61 or the second heat exchanger 62 provided in any one of the first and second flow paths 60a and 60b in the regenerated state and functioning as a refrigerant condenser is used. By heating the supported adsorbent with a refrigerant, the moisture adsorbed on the adsorbent can be released (regenerated).

(2) In the present embodiment, the function of the first and second heat exchangers 61 and 62 is switched to regenerate the adsorbent, so that the moisture can be continuously dehumidified without stagnation in the saturated state of moisture.
(Third embodiment)
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. In addition, since 3rd Embodiment is the structure which excluded the outdoor unit heat exchanger 25 and the indoor unit 22 of the outdoor unit 21 in 2nd Embodiment, the detailed description is abbreviate | omitted about the same part.

  FIG. 3 is a circuit diagram showing the air conditioner according to the present embodiment. As shown in the figure, in this embodiment, the outdoor unit heat exchanger 25, the indoor unit 22 (the indoor unit heat exchanger 26, the expansion valve 27), and the refrigerant circuit 20 are omitted and connected to the dehumidifying unit 60. The refrigerant pipes 75 a and 75 c are directly connected to the compressor 24. The air pipe 66 is directly open to the room 10b.

Here, the operation of the present embodiment will be described.
First, the flow of the refrigerant will be described. In the present embodiment, unlike the first and second embodiments, the refrigerant circuit 20 (the outdoor unit heat exchanger 25 and the indoor unit heat exchanger 26) does not exist, so that the refrigerant circuit 20 is circulated. There is no cooling or heating operation by the flow of the refrigerant.
[Air conditioning]
During the cooling operation, the compressor 24 driven by the gas engine 23 sucks the refrigerant from the refrigerant pipe 75a and compresses the sucked refrigerant and discharges it to the refrigerant pipe 75c. Thereby, the refrigerant flows in the direction of arrow B and is guided to the four-way valve 76 of the dehumidifying unit 60. The refrigerant guided to the four-way valve 76 passes through the first and second heat exchangers 61 and 62 whose functions are selectively switched as a condenser and an evaporator according to the saturation time monitored by a timer. After that, returning to the compressor 24 through the refrigerant pipe 75a is the same as in the second embodiment. The first heat exchanger 61 or the second heat exchanger 62 functioning as an evaporator has a function according to the indoor unit heat exchanger 26 during the cooling operation.
[heating]
During the heating operation, the compressor 24 driven by the gas engine 23 sucks the refrigerant from the refrigerant pipe 75c and compresses the sucked refrigerant and discharges it to the refrigerant pipe 75a. Thereby, the refrigerant flows in the direction of arrow A and is guided to the four-way valve 76 of the dehumidifying unit 60. The refrigerant guided to the four-way valve 76 is the outside air OA (and the return air RA) introduced from the underground channel 30 in either one of the first and second heat exchangers 61 and 62 functioning as a condenser. ), And heat is taken away to condense and liquefy. Thereafter, the refrigerant decompressed by the expansion valve 79 absorbs heat from the return air RA and vaporizes in either one of the first and second heat exchangers 61 and 62 functioning as an evaporator. Thereafter, the refrigerant is guided to the four-way valve 76 and returns to the compressor 24 through the refrigerant pipe 75c. The 1st heat exchanger 61 or the 2nd heat exchanger 62 which functions as a condenser has a function according to the indoor unit heat exchanger 26 at the time of heating operation.

Next, the air flow will be described. During the cooling or heating operation, the damper 34 is in an open state, and an appropriate amount of outside air OA is introduced by introducing the return air RA into the underground channel 30.
[Air conditioning]
First, the first and second flow paths 60a and 60b are respectively switched to the regenerated state and the dehumidified state by the first to fourth three-way dampers 71 to 74, and the first and second heat exchanges are performed by the four-way valve 76. Assume that the vessels 61 and 62 are switched to function as a condenser and an evaporator, respectively.

  During the cooling operation, the introduced outside air OA is cooled in advance by passing through the underground buried flow path 30, and is guided to the second flow path 60b in which the second heat exchanger 62 is disposed through the first three-way damper 71. . The outside air OA (and the return air RA) guided to the second flow path 60b passes through the second heat exchanger 62, so that the contained moisture is adsorbed and dehumidified. Then, the air dehumidified and cooled through the second heat exchanger 62 is blown out as the supply air SA into the room 10b through the third three-way damper 73.

  In addition, the return air RA guided to the dehumidifying unit 60 is guided to the first flow path 60 a where the first heat exchanger 61 is disposed through the fourth three-way damper 74. The return air RA is sent out by the blower fan 46 through the second three-way damper 72 together with the moisture desorbed by heating in the first heat exchanger 61 and is discharged to the outside as exhaust EA.

  Then, when the moisture saturation time of the adsorbent of the second heat exchanger 62 (first heat exchanger 61) is reached by the setting of the timer described above, the first to fourth three-way dampers 71 to 74 and the four-way valve 76 are used. Switches. As a result, the outside air OA (and the return air RA) introduced from the underground channel 30 is guided through the first three-way damper 71 to the first channel 60a where the first heat exchanger 61 is disposed. . The outside air OA (and the return air RA) guided to the first flow path 60a passes through the first heat exchanger 61, so that the contained moisture is adsorbed and dehumidified. Then, the air dehumidified and cooled through the first heat exchanger 61 is blown out as air supply SA into the room 10b through the third three-way damper 73.

In addition, the return air RA guided to the dehumidifying unit 60 is guided to the second flow path 60 b where the second heat exchanger 62 is disposed through the fourth three-way damper 74. The return air RA is sent out by the blower fan 46 through the second three-way damper 72 together with the moisture desorbed by heating in the second heat exchanger 62 and is discharged to the outside as exhaust EA.
[heating]
During the heating operation, the introduced outside air OA is preliminarily heated by passing through the underground channel 30 and guided to the dehumidifying unit 60. The outside air OA (and the return air RA) guided to the dehumidifying unit 60 is heated by the first heat exchanger 61 or the second heat exchanger 62 functioning as a condenser and blown out into the room 10b as the supply air SA. .

As described above in detail, according to the present embodiment, the following effects can be obtained in addition to the effects of the second embodiment.
(1) In the present embodiment, the first heat exchanger 61 or the second heat exchanger 62 is provided in any one of the first and second flow paths 60a and 60b in a dehumidified state and functions as a refrigerant evaporator. In addition, it can function as a cooling device by depriving the heat of the air (outside air OA and return air RA) supplied indoors.

(Fourth embodiment)
Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. Since the fourth embodiment has a configuration in which a cogeneration unit is combined with the configuration of the first embodiment, detailed description of the same parts is omitted.

  FIG. 4 is a circuit diagram showing the air conditioner according to the present embodiment. As shown in the figure, a cogeneration unit 81 as a power generation unit installed outdoors is provided with a gas engine 82 and a generator 83 driven by the gas engine 82. The gas engine 82 is driven by combustion of supplied gas. Then, the exhaust gas of the gas engine 82 passes through the exhaust heat exchanger 84 and is discharged to the outside.

  In the present embodiment, a regenerative heat exchanger 86 connected to the cogeneration unit 81 is installed instead of the regenerative heat exchanger 51. The regenerative heat exchanger 86 is connected to a water pipe 85 a connected to the exhaust heat exchanger 84. The water pipe 85 a is connected to the hot water pump 87 via the exhaust heat exchanger 84. Therefore, the hot water flowing through the water pipe 85a exchanges heat with the exhaust heat of the gas engine 82.

  The hot water pump 87 is connected to the on-off valve 88 via a water pipe 85b. The on-off valve 88 is connected to the regenerative heat exchanger 86 through a water pipe 85c. Therefore, when the on-off valve 88 is in the open state, when the hot water pump 87 is driven, hot water that exchanges heat with the exhaust heat of the gas engine 82 circulates in the water pipes 85a to 85c. The water pipes 85 a to 85 c constitute the power generation side hot water circuit 85. Then, the regeneration heat exchanger 86 heats the return air RA passing through the regeneration side flow path 40b with warm water circulating in the power generation side warm water circuit 85.

Here, the operation of the present embodiment will be described. In addition, since the flow of the refrigerant during the cooling or heating operation is the same as that in the first embodiment, the flow of air will be mainly described. During the cooling or heating operation, the damper 34 is in an open state, and an appropriate amount of outside air OA is introduced by introducing the return air RA into the underground channel 30.
[Air conditioning]
During the cooling operation, the introduced outside air OA is cooled in advance by passing through the underground channel 30, and the outside air OA (and the return air RA) guided to the dehumidifying side channel 40 a of the dehumidifying unit 40 moves the dehumidifying rotor 42. It is the same as that of the said 1st Embodiment that it dehumidifies by passing and is guide | induced to the indoor unit 22. FIG.

On the other hand, the return air RA guided to the regeneration side flow path 40 b of the dehumidifying unit 40 exchanges heat with the outside air OA by the sensible heat rotor 43, and is further heated by the regeneration heat exchanger 86. The return air RA heats the adsorbent when passing through the dehumidifying rotor 42 to desorb moisture, thereby drying the dehumidifying rotor 42. That is, in the present embodiment, when the dehumidifying rotor 42 is regenerated, the exhaust heat of the cogeneration unit 81 (gas engine 82) is used by the regenerative heat exchanger 86 (hot water). Accordingly, the damp air is sent out by the blower fan 46 and discharged to the outside as the exhaust EA, as in the first embodiment.
[heating]
The air flow during the heating operation is the same as in the first embodiment.

As described above in detail, according to the present embodiment, the following effects can be obtained in addition to the effect (1) in the first embodiment.
(1) In the present embodiment, the release (regeneration) of moisture adsorbed by the adsorbent of the dehumidifying rotor 42 is performed by the regenerative heat exchanger 86 (hot water) that uses the exhaust heat of the cogeneration unit 81 (gas engine 82). The return air RA passing through the regeneration side channel 40b can be heated.

  (2) In this embodiment, since the exhaust heat of the cogeneration unit 81 (gas engine 82) can be used during the cooling or dehumidifying operation in summer, the load on the outdoor unit 21 and the like can be reduced, and It is possible to save energy by increasing the exhaust heat utilization rate in summer.

(Fifth embodiment)
Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings. In addition, since 5th Embodiment omits the structure which concerns on the refrigerant | coolant of 4th Embodiment, the detailed description is abbreviate | omitted about the same part.

  FIG. 5 is a circuit diagram showing the air conditioning apparatus according to the present embodiment. As shown in the figure, in the present embodiment, the outdoor unit 21, the indoor unit 22, and the refrigerant circuit 20 are omitted. The air pipe 44 connected to the dehumidification side flow path 40a is directly open to the room 10b, and the air pipe 44 connected to the regeneration side flow path 40b is connected to the three-way damper 91. The three-way damper 91 is opened directly to the room 10 b via the air pipe 92 and is opened outdoors via the air pipe 93. A blower fan 94 disposed closer to the air pipe 44 than the sensible heat rotor 43 is installed in the dehumidification side flow path 40a. Accordingly, the outside air OA (and the return air RA) introduced into the dehumidification side channel 40 a is sent to the blower fan 94 and blown out as the supply air SA to the room 10 b through the air pipe 44.

Here, the operation | movement which concerns on the flow of the air of this embodiment is demonstrated. The damper 34 is in an open state, and an appropriate amount of outside air OA is introduced by introducing the return air RA into the underground channel 30.
[Summer dehumidification]
The introduced outside air OA is cooled in advance by passing through the underground channel 30 and guided to the dehumidifying side channel 40 a of the dehumidifying unit 40. At this time, the dehumidifying rotor 42 and the sensible heat rotor 43 are rotating. The outside air OA (and the return air RA) guided to the dehumidification side flow path 40a passes through the dehumidification rotor 42, so that the contained moisture is adsorbed and dehumidified. The adsorption heat generated at this time is cooled by the return air RA by passing through the sensible heat rotor 43. The air dehumidified through the dehumidification unit 40 (dehumidification side flow path 40a) is sent to the blower fan 94 and blown out as air supply SA into the room 10b via the air pipe 44.

Further, the return air RA guided to the regeneration-side flow path 40 b of the dehumidifying unit 40 exchanges heat with the outside air OA by the sensible heat rotor 43, and is further heated by the regeneration heat exchanger 86. The return air RA heats the adsorbent when passing through the dehumidifying rotor 42 to desorb moisture, thereby drying the dehumidifying rotor 42. That is, when the dehumidifying rotor 42 is regenerated, the exhaust heat of the cogeneration unit 81 (gas engine 82) is used by the regenerative heat exchanger 86 (warm water). The three-way damper 91 is in an open state on the air pipe 93 side, and the moist air is sent out by the blower fan 46 and discharged to the outside as exhaust EA.
[heating]
The introduced outside air OA is warmed in advance by passing through the underground channel 30 and guided to the dehumidifying side channel 40 a of the dehumidifying unit 40. At this time, the dehumidifying rotor 42 is stopped, and the sensible heat rotor 43 is rotating or stopped. The outside air OA (and the return air RA) guided to the dehumidification side flow path 40a passes through the dehumidification rotor 42 and, when the sensible heat rotor 43 is rotating, exchanges heat with this, and the sensible heat rotor 43 stops. If this is the case, this is passed through and sent to the blower fan 94 and blown out into the room 10b as the supply air SA.

  Further, the return air RA guided to the regeneration-side flow path 40b of the dehumidifying unit 40 exchanges heat with the sensible heat rotor 43 when the sensible heat rotor 43 is rotating, and when the sensible heat rotor 43 is stopped, It passes through and is further heated by the regenerative heat exchanger 86. That is, when the return air RA is heated, the exhaust heat of the cogeneration unit 81 (gas engine 82) is utilized by the regenerative heat exchanger 86 (warm water). The three-way damper 91 is in an open state on the air pipe 92 side, and the heated air is sent to the blower fan 46 and blown out into the room 10b as the supply air SA. Thereby, the room 10b is heated.

As described above in detail, according to the present embodiment, the following effects can be obtained in addition to the effect (1) in the first embodiment.
(1) In this embodiment, a dehumidifying operation and a heating operation can be performed with an extremely simple structure.

In addition, you may change the said embodiment as follows.
In the first embodiment, the air pipe 44 may be directly opened to the room 10 b without being connected to the indoor unit 22. In this case, the indoor unit 22 and the dehumidifying unit 40 can be arranged independently.

In the first embodiment, the exhaust heat exchanger 29 may exchange heat with the coolant circulating in the coolant circuit provided in the gas engine 23.
In the fourth and fifth embodiments, the exhaust heat exchanger 84 may exchange heat with the coolant circulating in the coolant circuit provided in the gas engine 82.

In the fourth and fifth embodiments, instead of the cogeneration unit 81 as a power generation unit, a fuel cell that similarly generates heat and electricity may be employed.
In each of the above embodiments, the midway portion 32 of the underground channel 30 may be embedded outdoors in the ground.

Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
-In the air conditioning apparatus as described in any one of Claims 1-3,
The air conditioning apparatus according to claim 1, wherein the dehumidifying and regenerating member is a dehumidifying rotor that moves between the dehumidifying side channel and the regeneration side channel with rotation.

1 is a circuit diagram showing a first embodiment of the present invention. The circuit diagram which shows the 2nd Embodiment of this invention. The circuit diagram which shows the 3rd Embodiment of this invention. The circuit diagram which shows the 4th Embodiment of this invention. The circuit diagram which shows the 5th Embodiment of this invention.

Explanation of symbols

  20, 75 ... Refrigerant circuit, 21 ... Outdoor unit, 22 ... Indoor unit, 23, 82 ... Gas engine, 24 ... Compressor, 25 ... Outdoor unit heat exchanger, 26 ... Indoor unit heat exchanger, 30 ... Underground flow Path 31, 33 ... opening end, 32 halfway part 40, 60 dehumidifying unit (dehumidifying means), 40 a ... dehumidifying side flow path, 40 b ... regeneration side flow path, 42 ... dehumidifying rotor (dehumidifying regeneration member), 50 ... Hot water circuit, 51,86 ... Regenerative heat exchanger (heating means), 60a, 60b ... Flow path, 60a ... First flow path (dehumidification side flow path or regeneration side flow path), 60b ... Second flow path (dehumidification) Side flow path or regeneration side flow path), 61... First heat exchanger (dehumidifying regeneration member, heating means functioning as a condenser), 62... Second heat exchanger (dehumidifying regeneration member, heating means functioning as a condenser) ), 76 ... Four-way valve (refrigerant circuit switching means), 81 ... Cogeneration Unit (power generation unit), 85 ... power generation side hot-water circuit.

Claims (4)

An underground buried flow path having an open end on one side open to the outdoors, an intermediate portion buried in the ground, and an open end on the other side drawn indoors;
With dehumidifying means installed indoors,
The dehumidifying means includes
A dehumidifying side channel connected to the open end on the other side of the underground channel and supplying mixed air of outside air and indoor air introduced from the underground channel;
A regeneration-side flow path in which the opening end on one side and the opening end on the other side are opened outdoors and indoors, and the indoor air is discharged outdoors;
A dehumidification regeneration member which is provided in the dehumidification side flow path and the regeneration side flow path and carries an adsorbent that adsorbs moisture from the mixed air passing through the dehumidification side flow path;
A heating means provided in the regeneration-side flow path, for heating the adsorbent and releasing moisture adsorbed on the adsorbent ;
The underground channel is opened indoors via a damper,
The damper is in an open state, and the amount of external air introduced into the dehumidifying side channel is adjusted by introducing indoor air into the underground channel through the damper. Air conditioner to do. In the air conditioning apparatus according to claim 1,
A gas engine, a compressor that is driven by the gas engine to suck in refrigerant and compresses and discharges the sucked refrigerant, and an outdoor that functions as a refrigerant condenser during cooling operation and as a refrigerant evaporator during heating operation An outdoor unit having a heat exchanger,
An indoor unit having an indoor unit heat exchanger that functions as a refrigerant evaporator during cooling operation and functions as a refrigerant condenser during heating operation;
A refrigerant circuit that forms a flow path until the refrigerant discharged from the compressor is sucked into the compressor, and circulates the refrigerant to the outdoor unit heat exchanger and the indoor unit heat exchanger;
A hot water circuit for circulating hot water for heat exchange with the exhaust heat of the gas engine,
The air conditioner characterized in that the heating means is a regenerative heat exchanger that is provided in the hot water circuit and heats indoor air that passes through the regeneration side flow path using hot water circulating in the hot water circuit. In the air conditioning apparatus according to claim 1,
It has a power generation side hot water circuit that circulates hot water that exchanges heat with the exhaust heat of the power generation unit,
The air conditioner characterized in that the heating means is a regenerative heat exchanger that is provided in the power generation side hot water circuit and heats indoor air passing through the regeneration side flow path using hot water circulating in the power generation side hot water circuit . In the air conditioning apparatus according to claim 1,
The dehumidification side flow path and the regeneration side flow path are connected to an open end on the other side of the underground buried flow path, and are used for mixing a mixture of external air and indoor air introduced from the underground buried flow path. A first flow that can be selectively switched between a dehumidified state that can be supplied indoors and a regenerative state in which the open end on one side and the open end on the other side are opened outdoors and indoors and indoor air can be discharged outdoors. It is composed of either one or the other of the path and the second flow path,
The dehumidification regeneration member is composed of a first heat exchanger and a second heat exchanger provided in the first flow path and the second flow path, respectively.
An outdoor unit having a gas engine and a compressor driven by the gas engine to suck in refrigerant and compress and discharge the sucked refrigerant;
A refrigerant circuit that forms a flow path until the refrigerant discharged from the compressor is sucked into the compressor, and circulates the refrigerant through the first and second heat exchangers;
Refrigerant circuit switching means for selectively switching the functions of the first and second heat exchangers as a refrigerant condenser and an evaporator,
The heating means is the first or second heat exchanger provided in any one of the first and second flow paths in the regeneration state and functioning as a refrigerant condenser, and the first or second heat exchanger is operated by the refrigerant. An air conditioner that heats the adsorbent carried on the first or second heat exchanger.

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