JP4997830B2 - Air conditioner and building - Google Patents

Description

  The present invention relates to an air conditioner having a 24-hour ventilation function and a building including the air conditioner.

  Conventionally, the refrigerant is circulated between the indoor unit and the outdoor unit, and the heat exchanger on the indoor unit side functions as a condenser to heat the air by the heat radiation action of the refrigerant and to exchange heat on the indoor unit side. A heat pump type air conditioner using a refrigeration cycle in which air is cooled by an endothermic action of a refrigerant by causing the chamber to function as an evaporator has been proposed.

  There has also been proposed an air conditioner in which a heat pump type air conditioner and a heat exchange element are combined so that the temperature of the outside air supplied to the room can be adjusted (see, for example, Patent Document 1).

Japanese Patent No. 2631694

  A conventional heat pump type air conditioner circulates indoor air to perform air conditioning, and thus does not have a function of performing ventilation.

  On the other hand, because the building is required to be ventilated, a 24-hour ventilation system having a ventilation function for supplying outside air into the room and discharging indoor air has been proposed and installed in the building.

  However, the conventional 24-hour ventilation system does not have a function to perform dehumidification or humidification, so when operated alone, the indoor humidity rises in humid periods such as summer, and indoors in low humidity periods such as winter. There was a problem that comfort was reduced because humidity decreased.

  For this reason, an air conditioner, a humidifier, and the like are separately provided to perform dehumidification and humidification, but there is a problem that the system becomes large.

  In addition, humidifiers are generally considered to be a necessity during heating in winter, and are installed in anticipation of the timing of operating the heating equipment. Therefore, humidifiers are used in seasons other than winter, such as spring and autumn. There was a problem that humidification could not be done without re-installing.

  The present invention has been made to solve such a problem, and an object thereof is to provide an air conditioner having a ventilation function and a dehumidifying / humidifying function, and a building including the air conditioner.

In order to solve the above-described problems, an air conditioner according to the present invention includes an outside air introduction path through which air sucked from the outside and supplied to the room passes, and an inside air discharge path through which air sucked from the room and discharged to the outside passes. A heat exchange element that exchanges heat between the air passing through the isolated first flow path and the air passing through the second flow path, a watering device that supplies water to the heat exchange element, and a heat pump that performs air conditioning An air conditioner, a recovery device for recovering excess water supplied to the heat exchange element and dew condensation water generated in the heat exchange element and the heat pump air conditioner, an outside air introduction path, and a first flow path of the heat exchange element Exchange between the suction side of the first channel, the outlet side of the first channel to the inlet side of the second channel through the heat pump air conditioner, and the outlet side of the second channel to the room air introduction bypassing the path, a first flow path of the heat exchange element Road and in communication with the heat exchange path is sucked from the outside, the air that is the air supply to the room, and a heat exchanger bypass path for bypassing the first flow path of the heat exchange element, or air through the heat exchange path Controlling the air flow rate through the heat exchange path via the heat exchange bypass path, the amount of water supplied to the second flow path of the heat exchange element by the watering device, and the air conditioning in the heat pump air conditioner Then, the air passing through the heat exchange path is cooled and dehumidified by the heat pump air conditioner, or the air passing through the heat exchange path via the heat exchange bypass path is air conditioned by the heat pump air conditioner and watering performing the operation for humidifying in the supplied water to the second flow path of the heat exchange element by the device, while the set humidity and temperature of the room, so to be replaced the air in the building at a given time , By the outside air introduction path while supply of outdoor air into the room, and performs constant ventilation to discharge indoor air to the outdoor by shy discharge path.

  In the air conditioner of the present invention, moisture in the air is condensed to perform dehumidification by causing the heat exchanger of the air conditioner to function as an evaporator. Moreover, humidification of the air passing through the heat exchange element is performed by supplying water to the heat exchange element with a watering device.

  As a result, the outdoor air is supplied to the room through the outside air introduction path, and the room is ventilated while dehumidifying or humidifying the room by discharging the room air to the outside through the inside air discharge path.

  Then, the amount of air supplied to the room by the outside air introduction path and the amount of air discharged to the outside by the inside air discharge path are adjusted so that the air in the building can be replaced within a predetermined time. Ventilation is performed for 24 hours while performing air conditioning with humidification.

The air conditioner of the present invention is isolated from the outside air introduction path through which the air sucked from the outside and supplied to the room passes, and the inside air discharge path through which the air sucked from the room and discharged to the outside passes. A heat exchange element that exchanges heat between air passing through the first flow path and air passing through the second flow path, a watering device that supplies water to the heat exchange element, a heat pump air conditioner that performs air conditioning, and heat A recovery device for recovering excess water supplied to the exchange element and condensed water generated in the heat exchange element and the heat pump air conditioner, and an outside air introduction path and the suction side of the first flow path of the heat exchange element are communicated with each other. A heat exchange path in which the blowout side of the first flow path is communicated with the suction side of the second flow path through the heat pump air conditioner, and the blowout side of the second flow path is communicated with the room, and a heat exchange element The first air flow path is bypassed and the outside air introduction path communicates with the heat exchange path Thereby, it is sucked from the outside, the air that is the air supply into the room, and the heat exchanger bypass passage for bypassing the first flow path of the heat exchange element, the air and the inside air discharge path through the outside air introduction path upstream of the heat exchanging path The exhaust heat recovery heat exchange element that exchanges heat with the air passing through the exhaust air, and the exhaust heat recovery heat exchange element brings the temperature of the air passing through the outside air introduction path close to the temperature of the air passing through the inside air discharge path Later, the flow rate of air passing through the heat exchange path or the heat exchange path via the heat exchange path, the amount of water supplied to the second flow path of the heat exchange element by the watering device, and heat pump air By controlling the air conditioning in the air conditioner, the air passing through the heat exchange path is cooled and dehumidified by the heat pump air conditioner, or the air passing through the heat exchange path via the heat exchange bypass path With air conditioning in flop air conditioner performs the operation for humidifying in the second flow path is supplied to the moisture of the heat exchange element by sprinkler system, while the set humidity and temperature room, the outside air introduction path The outdoor air is supplied to the room, and the room air is exhausted to the outside through the inside air discharge path, and the room is constantly ventilated to replace the air in the building for a predetermined time.

  In the air conditioner of the present invention, moisture in the air is condensed to perform dehumidification by causing the heat exchanger of the air conditioner to function as an evaporator. Moreover, humidification of the air passing through the heat exchange element is performed by supplying water to the heat exchange element with a watering device.

  As a result, the outdoor air is supplied into the room through the outside air introduction path, and the room air is discharged outside through the inside air discharge path, so that the temperature of the air passing through the outside air introduction path is reduced by the exhaust heat recovery heat exchange element. The room is ventilated while dehumidifying or humidifying it close to the temperature of the air passing through the discharge path.

  Then, the amount of air supplied to the room by the outside air introduction path and the amount of air discharged to the outside by the inside air discharge path are adjusted so that the air in the building can be replaced within a predetermined time. Ventilation is performed for 24 hours while performing air conditioning with humidification.

  According to the air conditioner of the present invention, it is possible to ventilate a building with a dehumidification function combining a heat exchange element and an air conditioner and a humidification function by supplying water to the heat exchange element for 24 hours.

  Thereby, air conditioning such as indoor dehumidification, dehumidification cooling, humidification, and humidification heating can be performed while performing ventilation for 24 hours, and comfort can be improved regardless of the season.

  Moreover, the outside heat can be brought close to room temperature and introduced into the heat exchange path by the exhaust heat recovery heat exchange element, and desired air conditioning can be performed while performing ventilation for 24 hours without increasing the capacity of the air conditioner.

  And in the building provided with such an air conditioner, a comfortable living space can be provided at low cost.

  Hereinafter, embodiments of an air conditioner and a building according to the present invention will be described with reference to the drawings.

<Configuration example of the air conditioner according to the first embodiment>
(1) Overview of Air Conditioner FIG. 1 is a configuration diagram illustrating an example of an air conditioner 1A according to the first embodiment. The air conditioner 1A of the first embodiment is harmonized by a heat pump air conditioner 2A as an air conditioner that cools and heats the air, and an air temperature adjustment and heat pump air conditioner 2A that are harmonized by the heat pump air conditioner 2A. It has a heat exchange element 3A for humidifying the air, and has an air conditioning function of sucking outdoor air and supplying air into the room in harmony with the air. In addition, the air conditioner 1A has a ventilation function of sucking indoor air and discharging it outside the room.

(2) Configuration example of heat pump air conditioner The heat pump air conditioner 2A has a pipe 20 through which the refrigerant flows, a first heat exchanger 21 that exchanges heat between the air supplied to the room and the refrigerant, and discharge to the outside. The 2nd heat exchanger 22 which performs heat exchange between the air to perform and a refrigerant | coolant is provided.

  The heat pump air conditioner 2A includes a compressor 23 that compresses the refrigerant that flows through the pipe 20, an expansion valve 24 that decompresses the refrigerant that flows through the pipe 20, and a four-way valve 25 that switches the direction in which the refrigerant flows.

(3) Configuration Example of Heat Exchange Element The heat exchange element 3A includes a first flow path 30a through which air flows, and a second flow path 30b through which air flows and is isolated from the first flow path 30a. Heat exchange is performed between the air flowing through the second flow path 30a and the air flowing through the second flow path 30b. Further, the second flow path 30b includes a water absorbing member which will be described later, and humidifies the air flowing through the second flow path 30b.

  2 and 3 are configuration diagrams showing an example of an embodiment of the heat exchange element. FIG. 2A is a front view of the heat exchange element 3A, and FIG. 2B is a left side of the heat exchange element 3A. FIG. 2C is a right side view of the heat exchange element 3A. 3A is a cross-sectional view taken along the line AA in FIG. 2A showing the internal configuration of the heat exchange element 3A, FIG. 3B is a cross-sectional view of the main part of the heat exchange element 3A, and FIG. c) is a perspective view of an essential part of the heat exchange element 3A.

  In the heat exchange element 3A, the first flow path 30a and the second flow path 30b are alternately stacked with the partition wall 31 interposed therebetween. In the first flow path 30a, the partition walls 31 are partitioned by a flow path forming plate 32a, and a plurality of parallel flow paths are linearly formed.

  In addition, the second flow path 30b is partitioned between the partition walls 31 by a flow path forming plate 32b, and a plurality of parallel flow paths are linearly formed in a direction parallel to the first flow path 30a here. It is formed.

  The partition wall 31 and the flow path forming plates 32a and 32b are made of a metal material such as aluminum or copper, for example. Note that the flow path forming plate 32a constituting the first flow path 30a is preferably configured to be subjected to water-repellent coating so that moisture is easily dried.

  On the other hand, the flow path forming plate 32b constituting the second flow path 30b includes a water absorbing member 33 facing the flow path. The water absorbing member 33 is made of, for example, a porous water absorbing material such as paper, cloth, or non-woven fabric, and holds the supplied water.

  Thus, when moisture is supplied to the water absorbing member 33, the air flowing through the second flow path 30b is humidified. If the water absorbing member 33 is in a dried state, the air flowing through the second flow path 30b is not humidified.

  The heat exchange element 3A includes a plurality of slits 34a in the flow path forming plate 32a and a plurality of slits 34b in the flow path forming plate 32b. The slit 34a is formed through the flow path forming plate 32a, and communicates a plurality of first flow paths 30a arranged in the vertical direction via the slit 34a. Similarly, the slit 34b is formed so as to penetrate the flow path forming plate 32b, and communicates a plurality of second flow paths 30b arranged in the vertical direction via the slit 34b.

  The heat exchange element 3A includes the suction port 35a of the first channel 30a and the outlet 36b of the second channel 30b on one end side, and the outlet 36a and second of the first channel 30a. The suction port 35b of the other flow path 30b is provided on the other end side.

  The suction port 35a of the first flow path 30a and the air outlet 36b of the second flow path 30b are separately configured at one end of the heat exchange element 3A in the vertical direction in this example. The surface on which the suction port 35a is formed is opened at a portion facing the first flow path 30a, and a portion facing the second flow path 30b is closed, so that the suction port 35a and the first flow path 30a are closed. Communicate.

  In addition, the surface on which the air outlet 36b is formed is open at a portion facing the second flow path 30b and is closed at a portion facing the first flow path 30a, so that the air outlet 36b and the second flow path 30b are closed. The path 30b communicates.

  The air outlet 36a of the first flow path 30a and the suction port 35b of the second flow path 30b are separately configured at the other end of the heat exchange element 3A in the vertical direction in this example. On the surface on which the air outlet 36a is formed, a portion facing the first flow path 30a is opened, a portion facing the second flow path 30b is closed, and the air outlet 36a and the first flow path 30a are closed. Communicate.

  Further, the surface on which the suction port 35b is formed is open at a portion facing the second flow path 30b and is closed at a portion facing the first flow path 30a, so that the suction port 35b and the second flow path 30b are closed. The path 30b communicates.

  Thereby, in the heat exchange element 3A, the air sucked from the suction port 35a blows out from the blower outlet 36a through the first flow path 30a. Further, the air sucked from the suction port 35b blows out from the blower outlet 36b through the second flow path 30b.

  In the heat exchange element 3A, the air flowing through the first flow path 30a and the air flowing through the second flow path 30b become opposite flows, and the first flow path 30a and the second flow path 30b are partitioned by the partition wall 31. Therefore, heat exchange is performed between the air flowing through the first flow path 30a and the air flowing through the second flow path 30b.

  Thus, heat exchange efficiency improves by making the flow of the air exchanged heat into a counter flow. In addition, by providing a slit in the flow path forming plate, moisture is reliably supplied to the entire flow path in the second flow path 30b, and turbulence is generated in the air flow, improving heat exchange efficiency. To do.

  In addition, the air sucked into the first flow path 30a and the air blown out from the second flow path 30b are not mixed because the suction port 35a and the blowout port 36b are separated vertically on one end side of the heat exchange element 3A. .

  Similarly, on the other end side of the heat exchange element 3A, the air outlet 36a and the suction port 35b are divided into upper and lower parts, so that the air blown out from the first flow path 30a and the air sucked into the second flow path 30b are Do not mix.

(4) Configuration Example of Air Channel Returning to FIG. 1, the air conditioner 1 </ b> A receives the indoor air sucked as the return air RA from the first intake port 41 communicating with the room from the exhaust port 42 communicating with the outside. An inside air discharge path 4 that forms a flow path for discharging as exhaust EA is provided.

  In addition, an outside air introduction path 5 is provided that forms a flow path for supplying outside air OA sucked from the second air inlet 51 communicating with the outside as air supply SA from the air inlet 52 communicating with the room.

  The inside air discharge path 4 includes an inside air discharge fan 43 that sucks air from the first air inlet 41 and generates a flow of air discharged from the air outlet 42. The inside air discharge path 4 includes a plurality of filters for purifying air.

  For example, the inside air discharge path 4 includes a filter 44 a at the first intake port 41. Moreover, since the inside air discharge path 4 passes through the second heat exchanger 22 of the heat pump air conditioner 2 </ b> A, a filter 44 b is also provided upstream of the second heat exchanger 22.

  The outside air introduction path 5 includes an outside air introduction fan 53 that draws air from the second air inlet 51 and generates a flow of air supplied from the air inlet 52. The outside air introduction path 5 includes a plurality of filters for purifying air.

  For example, the outside air introduction path 5 includes a filter 54 a at the second air inlet 51 and a filter 54 b at the air inlet 52.

  The air conditioner 1 </ b> A includes the heat exchange element 3 </ b> A and the heat pump air conditioner 2 </ b> A described above in the middle of the outside air introduction path 5.

  That is, the air conditioner 1A includes a pre-air conditioning path 55a branched from the outside air introduction path 5 and a post-air conditioning path 55b that joins the outside air introduction path 5 downstream from the pre-air conditioning path 55a.

  The pre-air conditioning path 55a communicates with the suction side of the first flow path 30a of the heat exchange element 3A constituting the heat exchange path 55c, and the post-air conditioning path 55b is the first of the heat exchange elements 3A constituting the heat exchange path 55c. It communicates with the outlet side of the second flow path 30b.

  The blowout side of the first flow path 30a of the heat exchange element 3A communicates with the air conditioning path 55d passing through the first heat exchanger 21 of the heat pump air conditioner 2A, and the air conditioning path 55d is the second of the heat exchange element 3A. It communicates with the suction side of the flow path 30b.

  Thereby, the heat exchange path 55c passes through the first flow path 30a of the heat exchange element 3A from the pre-air conditioning path 55a, passes through the air conditioning path 55d passing through the first heat exchanger 21 of the heat pump air conditioner 2A, and performs heat exchange. It returns to the element 3A, passes through the second flow path 30b isolated from the first flow path 30a, and communicates with the post-air conditioning path 55b.

  Accordingly, the heat pump air conditioner 2A is disposed on the downstream side of the first flow path 30a of the heat exchange element 3A and on the upstream side of the second flow path 30b.

  Further, the air conditioner 1A includes a heat exchange bypass path 56a that bypasses the heat exchange element 3A, and an air conditioning bypass path 56b that bypasses the heat exchange element 3A and the heat pump air conditioner 2A.

  The heat exchange bypass path 56a branches from the pre-air conditioning path 55a on the upstream side of the first flow path 30a of the heat exchange element 3A, and the air conditioning path 55d on the upstream side of the first heat exchanger 21 of the heat pump air conditioner 2A. Communicate. Thereby, the heat exchange bypass path 56a bypasses the first flow path 30a of the heat exchange element 3A constituting the heat exchange path 55c.

  The air conditioning bypass path 56b connects the pre-air conditioning path 55a and the post-air conditioning path 55b on the upstream side of the first flow path 30a and the downstream side of the second flow path 30b of the heat exchange element 3A. Thus, the air conditioning bypass path 56b bypasses the heat exchange path 55c and the air conditioning path 55d.

  The air conditioner 1A uses an outside air return air path 57a that forms a flow path for using a part of the outside air OA sucked from the second air inlet 51 for cooling the second heat exchanger 22 of the heat pump air conditioner 2A. Prepare.

  The outside air return path 57a branches from the outside air introduction path 5 upstream from the heat exchange element 3A, joins the inside air discharge path 4 upstream from the second heat exchanger 22 of the heat pump air conditioner 2A, and introduces outside air. The path 5 is communicated with the inside air discharge path 4.

  In addition, the air conditioner 1A mixes a part of the return air RA sucked from the first intake port 41 with the outside air OA and uses it for temperature adjustment of the outside air OA before heat exchange is performed by the heat exchange element 3A. A circulation path 57b that forms a flow path is provided.

  The circulation path 57b branches off from the inside air discharge path 4 on the downstream side of the first intake port 41, and merges with the outside air introduction path 5 on the upstream side of the pre-air conditioning path 55a on the upstream side of the heat exchange element 3A. The discharge path 4 is communicated with the outside air introduction path 5.

  Further, the air conditioner 1A forms a flow path for forming a flow path for discharging the outside air OA that has passed through the heat exchange element 3A and the heat pump air conditioner 2A to the outside without being supplied to the room from the air supply port 52. 57c.

  The return air path 57c branches from the outside air introduction path 5 on the downstream side of the post-air conditioning path 55b on the downstream side of the heat exchange element 3A, and merges with the inside air discharge path 4 so that the outside air introduction path 5 becomes the inside air discharge path 4. Communicate.

  The air conditioner 1A includes a flow path switching damper 58a that switches whether or not to supply the outside air OA to the outside air return path 57a and adjusts a distribution ratio and the like between the outside air introduction path 5 and the outside air return path 57a. .

  In addition, the air conditioner 1A switches between supply of the outside air OA or the mixed air of the outside air OA and the return air RA to the pre-air conditioning path 55a or the air conditioning bypass path 56b, and the pre-air conditioning path 55a and the air conditioning bypass path 56b. Is provided with a flow path switching damper 58b for adjusting the distribution ratio and the like.

  Further, the air conditioner 1A includes a flow path switching damper 58c that switches whether the outside air OA or a mixed air of the outside air OA and the return air RA is supplied to the heat exchange path 55c or the heat exchange bypass path 56a.

  In addition, the air conditioner 1A includes a flow path switching damper 58d that switches whether or not to supply the outside air OA or the mixed air of the outside air OA and the return air RA to the return air path 57c.

  Further, the air conditioner 1A includes a flow path switching damper 58e that switches whether or not the return air RA is supplied to the circulation path 57b and adjusts a distribution ratio between the inside air discharge path 4 and the circulation path 57b.

(5) Configuration example of water supply / drainage The air conditioner 1A supplies the cleaning liquid and the like to the first water sprinkler 61a that supplies water or cleaning liquid to the heat exchange element 3A and the first heat exchanger 21 of the heat pump air conditioner 2A. A second watering device 61b is provided.

  In addition, the air conditioner 1A serves as a water supply path 62 that connects a first watering device 61a and a second watering device 61b to a water supply pipe (not shown), and a cleaning liquid supplier that discharges a cleaning liquid such as a sterilizing agent or a descaling agent. The dispenser 63 includes a cleaning liquid supply path 64 that connects the dispenser 63 and the water supply path 62.

  In the air conditioner 1A, when water is supplied to the heat exchange element 3A by the first water spraying device 61a via the water supply path 62, the water absorbing member 33 of the second flow path 30b shown in FIG. 3 is in a wet state. Thus, the air flowing through the second flow path 30b is humidified.

  Further, in the air conditioner 1A, when the cleaning liquid is discharged from the dispenser 63 and the cleaning liquid or the like is supplied to the heat exchange element 3A by the first sprinkler 61a through the cleaning liquid supply path 64 and the water supply path 62, the air is supplied into the room. The first flow path 30a and the second flow path 30b that are likely to cause condensation through the air to be washed are washed.

  Thus, since the 1st watering apparatus 61a supplies water or a washing | cleaning liquid to the 1st flow path 30a and the 2nd flow path 30b of 3 A of heat exchange elements, for example, the 1st flow path shown in FIG. A watering nozzle or the like is provided above the suction port 35a of 30a and the suction port 35b of the second flow path 30b.

  In addition, in the heat exchange element 3A, in order to be able to supply water only to the water absorbing member 33 shown in FIG. 3, the nozzle for water spraying may be switched, or the water absorbing member 33 is provided with a nozzle for water spraying separately. Also good.

  In the air conditioner 1A, the cleaning liquid is discharged from the dispenser 63, and the cleaning liquid or the like is supplied to the first heat exchanger 21 of the heat pump air conditioner 2A by the second water sprinkler 61b through the cleaning liquid supply path 64 and the water supply path 62. Then, the first heat exchanger 21 in which the air supplied into the room passes and condensation is likely to occur is washed.

  Thus, since the 2nd watering apparatus 61b supplies a washing | cleaning liquid to the whole part through which the air of the 1st heat exchanger 21 of 2 A of heat pump air conditioners passes, for example above the 1st heat exchanger 21 A watering nozzle is provided.

Here, in addition to the dispenser 63, the cleaning liquid supply path 64 is provided with another dispenser (not shown) so that scale adhesion inhibitor, metal ions such as silver ions (Ag ⁺ ), copper ions (Cu ²⁺ ) and the like can be supplied. Thus, scale adhesion, mold generation, and the like may be suppressed.

  The air conditioner 1A includes a first drain pan 65a as a recovery device below the heat exchange element 3A and below the first heat exchanger 21 of the heat pump air conditioner 2A. The first drain pan 65a collects dew condensation water generated in the heat exchange element 3A and the first heat exchanger 21. Moreover, the 1st drain pan 65a collects the surplus part of the water supplied to 3 A of heat exchange elements. Furthermore, the first drain pan 65a collects an excess of the cleaning liquid supplied to the heat exchange element 3A and the first heat exchanger 21.

  The air conditioner 1A includes a second drain pan 65b as a recovery device below the second heat exchanger 22 of the heat pump air conditioner 2A. The second drain pan 65b collects the dew condensation water generated in the second heat exchanger 22.

  The air conditioner 1A drains the water collected by each drain pan, so that the water collected by the first drain pan 65a and the water collected by the second drain pan 65b are drained. The second drainage path 66b for draining water, the first drainage path 66a and the second drainage path 66b are connected, and a third drainage path 66c communicating with the outside is provided.

<Configuration example of air conditioner according to another embodiment>
FIG. 4 is a configuration diagram illustrating an example of an air conditioner 1B according to the second embodiment. Here, in the air conditioner 1B of the second embodiment, parts having the same configuration as the air conditioner 1A of the first embodiment will be described with the same reference numerals.

  The air conditioner 1B of the second embodiment has an air conditioning function of sucking outside air OA, air-conditioning by the action of the heat pump air conditioner 2A and the heat exchange element 3A, and supplying the air as a supply air SA to the room. Air is sucked as return air RA and exhausted to the outside as exhaust EA.

  The air conditioner 1B includes a heat exchange element 7 that exchanges heat between the outside air OA and the return air RA, and brings the outside air OA before air conditioning close to the temperature of the return air RA from the room, Introduced into the exchange element 3A and the heat pump air conditioner 2A.

  The heat exchange element 7 is an example of an exhaust heat recovery heat exchange element, and includes a first flow path 70a through which air flows and a second flow path 70b through which air flows separated from the first flow path 70a. Heat exchange is performed between the air flowing through the second flow path 70a and the air flowing through the second flow path 70b. The heat exchange element 7 is referred to as an orthogonal type or the like in which the air flow directions are orthogonal in the first flow path 70a and the second flow path 70b.

  The first flow path 70a of the heat exchange element 7 communicates with the outside air introduction path 5 upstream from the heat exchange element 3A, and the second flow path 70b of the heat exchange element 7 is the second flow path of the heat pump air conditioner 2A. It communicates with the inside air discharge path 4 on the upstream side of the heat exchanger 22.

  As a result, the inside air discharge fan 43 is operated to suck in the return air RA from the room, and the outside air introduction fan 53 is operated to suck in the outside air OA from the outside, so that the outside air OA and the return air RA move the heat exchange element 7. As described above, heat exchange is performed between the outside air OA before the air conditioning and the return air RA from the room.

  In the air conditioner 1B according to the second embodiment, the other configurations of the inside air discharge path 4 and the outside air introduction path 5 may be the same as those of the air conditioner 1A according to the first embodiment. Further, the configuration of the heat exchange element 3A and the heat pump air conditioner 2A and the configuration of the water supply / drainage may be the same as those of the air conditioner 1A of the first embodiment.

  Here, the air conditioners 1A and 1B are configured to include the heat exchange element 3A in which the air flow is counterflow, but may be configured to include an orthogonal heat exchange element.

  Further, an ion generator may be provided in the air supply path so that ions including positive ions and negative ions can be supplied so that the air-conditioned space, the air supply path, and the like can be sterilized.

<Operation example of air conditioner of each embodiment>
(1) Outline of control of air conditioner The air conditioner 1A of the first embodiment and the air conditioner 1B of the second embodiment dehumidify the room by the action of the heat exchange element 3A and the action of the heat pump air conditioner 2A. A dehumidification ventilation mode in which ventilation is performed while (cooling) and a humidification heating mode in which heating is performed while humidifying the room by the action of the heat exchange element 3A and the heat pump air conditioner 2A are executed.

  The air conditioners 1A and 1B execute a heating mode in which the room is heated by the action of the heat pump air conditioner 2A, a cooling mode in which the room is cooled by the action of the heat pump air conditioner 2A, and a ventilation mode in which the room is ventilated. Is done.

  Note that the air conditioner 1B of the second embodiment is configured to perform heat exchange between the outside air OA and the return air RA to perform ventilation. It is suitable as a device to which an air conditioning function by the exchange element 3A and the heat pump air conditioner 2A is added.

  In each of these operation modes, it is possible to switch between air conditioning and ventilation capacity by adjusting the air volume, etc., and for example, switching between two levels of “strong” and “weak” is possible.

  Further, the air conditioners 1A and 1B execute a cleaning / drying mode for cleaning the heat exchange element 3A and the first heat exchanger 21 of the heat pump air conditioner 2A.

(2) Operation example in dehumidification ventilation mode FIG. 5: is operation | movement explanatory drawing which shows the flow of the air at the time of performing dehumidification ventilation mode by making the dehumidification (cooling) capability into "weak" by 1 A of air conditioners. In each operation explanatory diagram shown below, a cross indicates a state in which the path is closed. Moreover, the flow value of the air passing through each path is an example.

  In weak operation in the dehumidifying ventilation mode, the flow path switching damper 58a opens the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a, adjusts the opening, and returns a predetermined amount of outside air OA to the outside air. Distribute to the air path 57a.

  Further, the flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b to supply the entire amount of outside air OA to the pre-air conditioning path 55a.

  Further, the flow path switching damper 58c opens the flow path to the heat exchange path 55c, closes the flow path to the heat exchange bypass path 56a, and supplies the entire amount of outside air OA to the heat exchange path 55c.

  The flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and supplies the entire amount of the air-conditioned outside air OA from the air supply port 52.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and closes the flow path to the circulation path 57b, and supplies the entire amount of the return air RA to the inside air discharge path 4.

  In weak operation in the dehumidifying ventilation mode, water supply to the heat exchange element 3A is not performed. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state.

  Further, the heat pump air conditioner 2A operates the compressor 23, causes the refrigerant to flow in the direction indicated by the arrow by the four-way valve 25, constitutes a refrigeration cycle, and causes the first heat exchanger 21 to function as an evaporator. The outside air OA is cooled by the endothermic action of the refrigerant. At this time, the second heat exchanger 22 functions as a condenser, and cools and liquefies the refrigerant using the return air RA.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is drawn from the second intake port 51, and a predetermined amount of outside air OA is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  In the heat exchange path 55c, the outside air OA passes through the first flow path 30a of the heat exchange element 3A, and the outside air OA that passes through the first flow path 30a passes through the first heat exchanger 21 of the heat pump air conditioner 2A. Then, the outside air OA that has passed through the first heat exchanger 21 functioning as an evaporator of the refrigeration cycle returns to the heat exchange element 3A and passes through the second flow path 30b.

  The second flow path 30b of the heat exchange element 3A is in a dried state, and the outside air OA is exchanged with the air cooled by the heat pump air conditioner 2A by passing through the heat exchange element 3A. The temperature is lowered.

  The air cooled by the heat pump air conditioner 2A is the outside air OA whose temperature has been lowered by heat exchange by the heat exchange element 3A. At this time, the outside air passing through the first flow path 30a according to the temperature difference between the outside air OA passing through the first flow path 30a of the heat exchange element 3A and the cooled outside air OA passing through the second flow path 30b. The moisture in the OA is condensed and dehumidification is performed. Thereby, in dehumidification ventilation mode, the 1st channel 30a of heat exchange element 3A functions as a dehumidification channel.

  Further, the outside air OA passes through the first heat exchanger 21 functioning as an evaporator of the refrigeration cycle, and moisture is condensed and dehumidified. At this time, since the temperature of the outside air OA has been lowered before being introduced into the first heat exchanger 21, the relative humidity has increased, so that the cooling capacity of the heat pump air conditioner 2A is not increased, that is, the power consumption. The amount of dehumidification is increased without increasing the temperature, and the outside air OA having high temperature and medium humidity is made to be medium temperature and low humidity air in which the temperature decrease more than necessary is suppressed in summer.

  Then, the outside air OA that has become intermediate temperature and low humidity through the heat exchange element 3A and the heat pump air conditioner 2A is supplied into the room as an air supply SA from the air supply port 52.

  The dew condensation water generated in the heat exchange element 3A and the first heat exchanger 21 is collected by the first drain pan 65a and drained to the outside through the first drain path 66a and the third drain path 66c. The

  In the dehumidifying ventilation mode, the inside air discharge fan 43 is operated to link the ventilation to the dehumidifying operation. That is, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41. The return air RA drawn from the first intake port 41 is mixed with a part of the outside air OA distributed to the outside air return passage 57a, and functions as a condenser of the refrigeration cycle. And is exhausted from the exhaust port 42 to the outside as exhaust EA. At this time, it is possible to improve the cooling efficiency of the refrigerant by passing the return air RA, which is air-conditioned and reduced in temperature in summer, through the second heat exchanger 22 functioning as a condenser. Become.

  In the weak operation of the dehumidification ventilation mode, the above operation makes it possible to dehumidify the room without overcooling the room while ventilating the room by supplying and exhausting air. Can be obtained.

  Further, by performing dehumidification by the action of the heat exchange element 3A and the heat pump air conditioner 2A and collecting the dew condensation water with the first drain pan 65a, the occurrence of dew condensation at the air supply port 52 can be prevented. And even if it increases dehumidification amount, since it is not necessary to reheat air, a heater etc. are unnecessary and the complication of an apparatus structure can be prevented.

  In addition, when the air-conditioning apparatus 1B according to the second embodiment performs a weak operation in the dehumidification ventilation mode, the outdoor air OA before the air conditioning is heat-exchanged with the return air RA by the heat exchange element 7, so that the return air is returned in summer. The outside air OA whose temperature has been lowered according to the temperature of RA is introduced into the heat exchange element 3A and the heat pump air conditioner 2A. Thereby, in the air conditioner 1B of the second embodiment, even in a state where the cooling capacity by the heat pump air conditioner 2A is lowered to reduce the power consumption, the dehumidification amount is increased, and the outdoor air OA having high temperature and humidity is generated in the summer. Therefore, it is possible to obtain a medium-temperature and low-humidity air in which the temperature drop is suppressed more than necessary.

  FIG. 6 is an operation explanatory diagram showing an air flow when the dehumidification / ventilation mode is executed with the dehumidification (cooling) capability set to “strong” in the air conditioner 1A.

  In the strong operation of the dehumidifying ventilation mode, a part of the return air RA is circulated, dehumidified and returned to the room, so that desired dehumidification can be performed in a short time.

  That is, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and the flow path to the circulation path 57b, adjusts the opening, and introduces a predetermined amount of the return air RA into the outside air. Distribute to path 5.

  The state of the other components is the same as in the case of weak operation in the dehumidification ventilation mode, and the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a are opened by the path switching damper 58a, and the opening degree And a predetermined amount of the outside air OA is distributed to the outside air return passage 57a.

  Further, the flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, so that the total amount of the mixed air of the outside air OA and the predetermined amount of return air RA is transferred to the pre-air conditioning path 55a. Supply.

  Further, the flow path switching damper 58c opens the flow path to the heat exchange path 55c and closes the flow path to the heat exchange bypass path 56a so that the total amount of the mixed air of the outside air OA and the predetermined amount of return air RA is transferred to the heat exchange path 55c. To supply.

  The flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c to supply the entire amount of the mixed air of the air-conditioned outside air OA and the predetermined amount of the return air RA. Air is supplied from the mouth 52.

  Even in the strong operation in the dehumidifying ventilation mode, water supply to the heat exchange element 3A is not performed. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state.

  Further, the heat pump air conditioner 2A operates the compressor 23, causes the refrigerant to flow in the direction indicated by the arrow by the four-way valve 25, constitutes a refrigeration cycle, and causes the first heat exchanger 21 to function as an evaporator. The mixed air of the outside air OA and a predetermined amount of the return air RA is cooled by the heat absorbing action of the refrigerant. At this time, the second heat exchanger 22 functions as a condenser.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is drawn from the second intake port 51, and a predetermined amount of outside air OA is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  Further, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41, and a predetermined amount of the return air RA is introduced from the circulation path 57b to the outside air introduction path 5, and the outside air OA. And supplied to the heat exchange path 55c.

  In the heat exchange path 55c, a predetermined amount of the mixed air of the outside air OA and the return air RA passes through the first flow path 30a of the heat exchange element 3A, and the mixture of the outside air OA and the return air RA through the first flow path 30a. Air passes through the first heat exchanger 21 of the heat pump air conditioner 2A. The mixed air of the outside air OA and the return air RA that has passed through the first heat exchanger 21 functioning as an evaporator of the refrigeration cycle returns to the heat exchange element 3A and passes through the second flow path 30b.

  The second flow path 30b of the heat exchange element 3A is in a dried state, and the mixed air of the outside air OA and the return air RA passes through the heat exchange element 3A, so that the air cooled by the heat pump air conditioner 2A Heat is exchanged between them, and the temperature is lowered.

  In addition, the air cooled by the heat pump air conditioner 2A is mixed with the return air RA that is air-conditioned, and the outside air OA that has been lowered in temperature by being heat-exchanged by the heat exchange element 3A. This is the mixed air of the return air RA.

  At this time, the temperature of the mixed air of the outside air OA and the return air RA passing through the first flow path 30a of the heat exchange element 3A, and the mixed air of the cooled outside air OA and the return air RA passing through the second flow path 30b. In accordance with the difference, moisture in the mixed air of the outside air OA and the return air RA passing through the first flow path 30a is condensed and dehumidification is performed. Thereby, the first flow path 30a of the heat exchange element 3A functions as a dehumidification flow path.

  Furthermore, the mixed air of the outside air OA and the return air RA passes through the first heat exchanger 21 functioning as an evaporator of the refrigeration cycle, and moisture is condensed and dehumidified. At this time, since the temperature of the mixed air of the outside air OA and the return air RA is lowered before being introduced into the first heat exchanger 21, the relative humidity is increased, and the cooling capacity of the heat pump air conditioner 2A is increased. The amount of dehumidification is increased without increasing the power consumption, that is, without increasing the power consumption, so that the high-temperature, medium-humidity outside air OA is made into medium-temperature, low-humidity air that suppresses an excessive temperature decrease.

  Then, the mixed air of the outside air OA and the return air RA, which has become low temperature and low temperature through the heat exchange element 3A and the heat pump air conditioner 2A, is supplied into the room as an air supply SA from the air supply port 52.

  The condensed water generated in the heat exchange element 3A and the first heat exchanger 21 is collected by the first drain pan 65a and drained to the outside.

  In the strong operation in the dehumidifying ventilation mode, by operating the inside air discharge fan 43, a part of the return air RA sucked from the first intake port 41 is part of the outside air OA distributed to the outside air return air path 57a. And the second heat exchanger 22 functioning as a condenser of the refrigeration cycle, and then discharged from the exhaust port 42 to the outside as exhaust EA. At this time, the cooling efficiency of the refrigerant can be improved by passing the return air RA, which is air-conditioned and lowered in temperature, through the second heat exchanger 22 functioning as a condenser.

  In the strong operation in the dehumidification / ventilation mode, the above operation allows the room to be dehumidified without overcooling the room while ventilating the room by supplying and exhausting air as in the case of the weak operation in the dehumidification / ventilation mode. Further, by performing dehumidification by the action of the heat exchange element 3A and the heat pump air conditioner 2A and collecting the dew condensation water with the first drain pan 65a, the occurrence of dew condensation at the air supply port 52 can be prevented.

  Furthermore, a part of the return air RA is circulated, dehumidified and returned to the room, thereby increasing the ventilation air volume, and dehumidifying a space having a predetermined area can be performed in a short time.

  Even in the case where the air-conditioning apparatus 1B according to the second embodiment performs a strong operation in the dehumidification ventilation mode, in summer, the mixture of the outside air OA and the return air RA, the temperature of which is lowered according to the temperature of the return air RA. Since air is introduced into the heat exchange element 3A and the heat pump air conditioner 2A, desired dehumidification ventilation can be performed with the cooling capacity of the heat pump air conditioner 2A lowered.

  Here, in the dehumidifying ventilation mode, ventilation is performed while dehumidifying, so if the ventilation air volume is set so that the air in the room (inside the building) can be replaced in a predetermined time, the 24-hour ventilation operation in which regular ventilation is performed is possible. It becomes possible to perform dehumidification without excessively lowering the room temperature while performing ventilation for 24 hours, and in the summer when the outside air is hot and humid, it is possible to keep the room in a comfortable environment without increasing the room temperature and humidity.

  FIG. 7 is a graph showing the relationship between the absolute humidity and the dehumidification amount, and the graph G1 shows the dehumidification amount in the air conditioner 1A of the present embodiment in which the heat exchange element 3A and the heat pump air conditioner 2A are used in combination. Graph G2 shows the dehumidification amount at the time of performing dehumidification only with a heat pump air conditioner as a comparative example.

  Table 1 shows the ratio of the amount of dehumidification when dehumidification is performed using the heat exchange element 3A and the heat pump air conditioner 2A together and when dehumidification is performed only with the heat pump air conditioner.

  As shown in FIG. 7 and Table 1 above, when dehumidification is performed using the heat exchange element 3A and the heat pump air conditioner 2A in combination, the dehumidification amount is increased as compared with the case where dehumidification is performed only with the heat pump air conditioner. You can see that

(3) Operation example of humidification heating mode FIG. 8: is operation | movement explanatory drawing which shows the flow of the air at the time of performing humidification heating mode by making heating capacity into "weak" with 1 A of air conditioners.

  In the weak operation in the humidifying / heating mode, the flow path switching damper 58a opens the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a, adjusts the opening degree, and returns a predetermined amount of the outside air OA to the outside air. Distribute to the air path 57a.

  The flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, and the flow path switching damper 58c closes the flow path to the heat exchange path 55c and heats it. The flow path to the replacement bypass path 56a is opened, and the entire amount of outside air OA is supplied to the air conditioning path 55d.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and supplies the entire amount of the air-conditioned outside air OA from the air supply port 52.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and closes the flow path to the circulation path 57b, and supplies the entire amount of the return air RA to the inside air discharge path 4.

  In the weak operation in the humidifying / heating mode, water is supplied to the heat exchange element 3 </ b> A by the first watering device 61 a through the water supply path 62. Thereby, the water absorbing member 33 shown in FIG. 3 is in a wet state. In addition, water supply to the 1st heat exchanger 21 from the 2nd sprinkler 61b connected to the same water supply path | route 62 is not performed by closing the valve which is not shown in figure.

  In addition, the heat pump air conditioner 2A operates the compressor 23 and causes a refrigerant to flow in the direction indicated by the arrow by the four-way valve 25 to constitute a heat pump, and the first heat exchanger 21 functions as a condenser. The outside air OA is heated by the heat radiation action of the refrigerant. At this time, the second heat exchanger 22 functions as an evaporator and vaporizes the refrigerant using a part of the return air RA and the outside air OA.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and a predetermined amount of outside air OA passes from the outside air introduction path 5 through the first flow path 30a of the heat exchange element 3A. Bypass is supplied to the air conditioning path 55d.

  The outside air OA supplied to the air conditioning path 55d is heated by passing through the first heat exchanger 21 of the heat pump air conditioner 2A functioning as a heat pump condenser, and the second flow path 30b of the heat exchange element 3A. Pass through.

  Since the water absorption member 33 shown in FIG. 3 is wet in the second flow path 30b of the heat exchange element 3A, the heated outside air OA passing through the second flow path 30b of the heat exchange element 3A is humidified. The Thereby, in humidification heating mode, the 2nd channel 30b of heat exchange element 3A functions as a humidification channel.

  Here, in the humidification heating mode, by bypassing the first flow path 30a of the heat exchange element 3A, heat exchange is performed between the outside air OA having a low temperature in winter and the air heated by the heat pump air conditioner 2A. Not done.

  Thereby, the temperature drop of the outside air OA heated by the heat pump air conditioner 2A is prevented, and the low temperature and low humidity outside air OA is set as medium temperature and high humidity air.

  The outside air OA that has become intermediate temperature and high humidity through the heat pump air conditioner 2A and the heat exchange element 3A is supplied into the room as an air supply SA from the air supply port 52.

  The surplus water supplied to the heat exchange element 3A is collected by the first drain pan 65a and drained to the outside through the first drainage path 66a and the third drainage path 66c.

  In the humidifying / heating mode, the inside air discharge fan 43 may be operated so that ventilation is linked to the humidifying / heating operation. That is, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41. The return air RA drawn from the first intake port 41 is mixed with a part of the outside air OA distributed to the outside air return passage 57a, and the second heat exchanger 22 functioning as an evaporator of the heat pump is mixed. It passes through the exhaust port 42 and is discharged to the outside as exhaust EA. At this time, in winter, the return air RA that has been air-conditioned and raised in temperature passes through the second heat exchanger 22 that functions as an evaporator, thereby preventing the generation of frost. In addition, the dew condensation water generated in the second heat exchanger 22 is collected by the second drain pan 65b and drained to the outside through the second drainage path 66b and the third drainage path 66c.

  In the weak operation of the humidifying and heating mode, the above operation enables indoor humidification while controlling the indoor temperature to a predetermined temperature, and prevents overdrying in the room without installing another humidifying device. it can. Therefore, indoor humidification can be performed using the air conditioner 1A not only in winter but also in spring and autumn other than winter. It is also possible to link with indoor ventilation by supply and exhaust.

  In addition, when the air conditioning apparatus 1B of the second embodiment performs a weak operation in the humidifying and heating mode, since the outside air OA before the air conditioning is heat-exchanged with the return air RA by the heat exchange element 7, in the winter season, The outside air OA whose temperature is raised according to the temperature of the return air RA is introduced into the heat pump air conditioner 2A and the heat exchange element 3A. Thereby, even if it reduces the heating capability of the heat pump air conditioner 2A, desired humidification heating becomes possible and power consumption can be suppressed.

  FIG. 9 is an operation explanatory diagram showing the air flow when the humidifying heating mode is executed with the heating capacity set to “strong” in the air conditioner 1A.

  In the strong operation in the humidifying and heating mode, a part of the return air RA is circulated, humidified and heated, and returned to the room so that heating can be performed in a short time.

  That is, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and the flow path to the circulation path 57b, adjusts the opening, and introduces a predetermined amount of the return air RA into the outside air. Distribute to path 5.

  The states of the other components are the same as in the case of weak operation in the humidifying and heating mode, and the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a are opened by the path switching damper 58a, and the opening degree And a predetermined amount of the outside air OA is distributed to the outside air return passage 57a.

  The flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, and the flow path switching damper 58c closes the flow path to the heat exchange path 55c and heats it. The flow path to the replacement bypass path 56a is opened, and the entire amount of mixed air of the outside air OA and a predetermined amount of return air RA is supplied to the air conditioning path 55d.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and the entire amount of air-conditioned mixed air of the outside air OA and the return air RA is supplied to the air supply port 52. From the air.

  Even in the strong operation in the humidifying and heating mode, water is supplied to the heat exchange element 3A by the first watering device 61a through the water supply path 62. Thereby, the water absorbing member 33 shown in FIG. 3 is in a wet state. In addition, water supply to the 1st heat exchanger 21 is not performed.

  In addition, the heat pump air conditioner 2A operates the compressor 23 and causes a refrigerant to flow in the direction indicated by the arrow by the four-way valve 25 to constitute a heat pump, and the first heat exchanger 21 functions as a condenser. The mixed air of the outside air OA and the return air RA is heated by the heat radiation action of the refrigerant. At this time, the second heat exchanger 22 functions as an evaporator.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and a predetermined amount of outside air OA passes from the outside air introduction path 5 through the first flow path 30a of the heat exchange element 3A. Bypass is supplied to the air conditioning path 55d.

  Further, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41, and a predetermined amount of the return air RA is introduced from the circulation path 57b to the outside air introduction path 5, and the outside air OA. And is supplied to the air conditioning path 55d by bypassing the first flow path 30a of the heat exchange element 3A.

  The mixed air of the outside air OA and the return air RA supplied to the air conditioning path 55d is heated by passing through the first heat exchanger 21 of the heat pump air conditioner 2A functioning as a heat pump condenser, and the heat exchange element 3A. Through the second flow path 30b.

  Since the second flow path 30b of the heat exchange element 3A is in a state in which the water absorbing member 33 shown in FIG. 3 is wet, the heated outside air OA and the return air passing through the second flow path 30b of the heat exchange element 3A. The mixed air of RA is humidified. Thereby, the 2nd channel 30b of heat exchange element 3A functions as a humidification channel.

  Here, in the humidification heating mode, by bypassing the first flow path 30a of the heat exchange element 3A, heat exchange is performed between the outside air OA having a low temperature in winter and the air heated by the heat pump air conditioner 2A. Not done.

  Further, in the strong operation in the humidifying and heating mode, the return air RA is circulated and mixed with the outside air OA, and in the winter, the return air RA that is conditioned and warmed is mixed with the outside air OA. OA is warmed.

  Thereby, the temperature drop of the mixed air of the outside air OA and the return air RA heated by the heat pump air conditioner 2A is prevented, and the low temperature and low humidity outside air OA is made into medium temperature and high humidity air.

  Then, the mixed air of the outside air OA and the return air RA, which has become medium temperature and high humidity through the heat pump air conditioner 2A and the heat exchange element 3A, is supplied into the room as an air supply SA from the air supply port 52.

  The surplus water supplied to the heat exchange element 3A is collected by the first drain pan 65a and drained to the outside.

  In the strong operation in the humidifying and heating mode, by operating the inside air discharge fan 43, a part of the return air RA sucked from the first intake port 41 is partly part of the outside air OA distributed to the outside air return air path 57a. And the second heat exchanger 22 functioning as an evaporator of the heat pump, and then discharged from the exhaust port 42 to the outside as exhaust EA. At this time, in winter, the return air RA that has been air-conditioned and raised in temperature passes through the second heat exchanger 22 that functions as an evaporator, thereby preventing the generation of frost. Note that the dew condensation water generated in the second heat exchanger 22 is collected by the second drain pan 65b and drained to the outside.

  In the strong operation in the humidifying and heating mode, the above operation enables the indoor humidification while controlling the indoor temperature to a predetermined temperature as in the weak operation in the humidifying and heating mode.

  Further, a part of the return air RA is circulated, humidified and heated, and returned to the room to increase the ventilation air volume, so that a space having a predetermined area can be heated in a short time.

  Even in the case where the air conditioning apparatus 1B according to the second embodiment performs a strong operation in the humidifying and heating mode, in winter, the mixture of the outside air OA and the return air RA, the temperature of which is increased according to the temperature of the return air RA. Since air is introduced into the heat pump air conditioner 2A and the heat exchange element 3A, desired humidification heating is possible with the heating capacity of the heat pump air conditioner 2A lowered.

In the humidification heating mode described above, scale adhesion inhibitor, metal ions such as silver ions (Ag ⁺ ), copper ions (Cu ²⁺ ), and the like are supplied to the heat exchange element 3A from another dispenser (not shown) provided in the cleaning liquid supply path 64. By supplying, scale adhesion, generation of mold, and the like can be suppressed, and odor can be suppressed from being supplied into the room.

  Here, in the humidification heating mode, since ventilation is performed while humidifying and heating is performed, if the ventilation air volume is set so that the air in the room (inside the building) can be replaced in a predetermined time, a 24-hour ventilation operation in which ventilation is always performed By performing humidification while performing ventilation for 24 hours, air conditioning can be performed without lowering the indoor temperature and humidity in the winter when the outside air is at low temperature and low humidity.

(4) Operation Example in Heating Mode FIG. 10 is an operation explanatory diagram showing the air flow when the heating mode is executed with the heating capacity “weak” in the air conditioner 1A.

  In the weak operation in the heating mode, the open / close state of each damper is the same as in the weak operation in the humidifying heating mode, and the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a are changed by the flow path switching damper 58a. Open, adjust the opening, and distribute a predetermined amount of outside air OA to the outside air return passage 57a.

  The flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, and the flow path switching damper 58c closes the flow path to the heat exchange path 55c and heats it. The flow path to the replacement bypass path 56a is opened, and the entire amount of outside air OA is supplied to the air conditioning path 55d.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and supplies the entire amount of the air-conditioned outside air OA from the air supply port 52.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and closes the flow path to the circulation path 57b, and supplies the entire amount of the return air RA to the inside air discharge path 4.

  In the weak operation in the heating mode, water is not supplied to the heat exchange element 3A by not performing humidification. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state.

  In addition, the heat pump air conditioner 2A operates the compressor 23 and causes a refrigerant to flow in the direction indicated by the arrow by the four-way valve 25 to constitute a heat pump, and the first heat exchanger 21 functions as a condenser. The outside air OA is heated by the heat radiation action of the refrigerant. At this time, the second heat exchanger 22 functions as an evaporator.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and a predetermined amount of outside air OA passes from the outside air introduction path 5 through the first flow path 30a of the heat exchange element 3A. Bypass is supplied to the air conditioning path 55d.

  The outside air OA supplied to the air conditioning path 55d is heated by passing through the first heat exchanger 21 of the heat pump air conditioner 2A functioning as a heat pump condenser, and the second flow path 30b of the heat exchange element 3A. Pass through.

  Since the second flow path 30b of the heat exchange element 3A is in a state where the water absorbing member 33 shown in FIG. 3 is dry, the heated outside air OA passing through the second flow path 30b of the heat exchange element 3A has a humidity. It does not change.

  Here, in the heating mode, by bypassing the first flow path 30a of the heat exchange element 3A, heat exchange is performed between the outside air OA having a low temperature in winter and the air heated by the heat pump air conditioner 2A. I will not.

  Thereby, the temperature fall of the external air OA heated by the heat pump air conditioner 2A is prevented, and the low-temperature external air OA is used as medium-temperature air.

  Then, the outside air OA that has reached an intermediate temperature through the heat pump air conditioner 2A and the heat exchange element 3A is supplied into the room as an air supply SA from the air supply port 52.

  In the heating mode, the inside air exhaust fan 43 may be operated to link the ventilation to the heating operation. That is, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41. The return air RA drawn from the first intake port 41 is mixed with a part of the outside air OA distributed to the outside air return passage 57a, and the second heat exchanger 22 functioning as an evaporator of the heat pump is mixed. It passes through the exhaust port 42 and is discharged to the outside as exhaust EA. At this time, in winter, the return air RA that has been air-conditioned and raised in temperature passes through the second heat exchanger 22 that functions as an evaporator, thereby preventing the generation of frost. Note that the dew condensation water generated in the second heat exchanger 22 is collected by the second drain pan 65b and drained to the outside.

  In the weak operation in the heating mode, the indoor temperature can be controlled to be a predetermined temperature by the above operation.

  When the air conditioning apparatus 1B according to the second embodiment performs a weak operation in the heating mode, the outside air OA before the air conditioning is heat-exchanged with the return air RA by the heat exchange element 7, so that the return air is returned in winter. The outside air OA whose temperature is raised according to the temperature of the air RA is introduced into the heat pump air conditioner 2A. Thereby, even if it reduces the heating capability of 2 A of heat pump air conditioners, desired heating becomes possible and power consumption can be suppressed.

  FIG. 11 is an operation explanatory diagram showing an air flow when the heating mode is executed with the heating capacity set to “strong” in the air conditioner 1A.

  In the strong operation in the heating mode, a part of the return air RA is circulated, heated and returned to the room, so that heating can be performed in a short time.

  That is, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and the flow path to the circulation path 57b, adjusts the opening, and introduces a predetermined amount of the return air RA into the outside air. Distribute to path 5.

  The states of the other components are the same as in the case of weak operation in the heating mode, and the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a are opened by the path switching damper 58a, and the opening degree is set. By adjusting, a predetermined amount of the outside air OA is distributed to the outside air return passage 57a.

  The flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, and the flow path switching damper 58c closes the flow path to the heat exchange path 55c and heats it. The flow path to the replacement bypass path 56a is opened, and the entire amount of mixed air of the outside air OA and a predetermined amount of return air RA is supplied to the air conditioning path 55d.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and the entire amount of air-conditioned mixed air of the outside air OA and the return air RA is supplied to the air supply port 52. From the air.

  Even in the strong operation in the heating mode, water is not supplied to the heat exchange element 3A by not performing humidification. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state.

  In addition, the heat pump air conditioner 2A operates the compressor 23 and causes a refrigerant to flow in the direction indicated by the arrow by the four-way valve 25 to constitute a heat pump, and the first heat exchanger 21 functions as a condenser. The mixed air of the outside air OA and the return air RA is heated by the heat radiation action of the refrigerant. At this time, the second heat exchanger 22 functions as an evaporator.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and a predetermined amount of outside air OA passes from the outside air introduction path 5 through the first flow path 30a of the heat exchange element 3A. Bypass is supplied to the air conditioning path 55d.

  Further, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41, and a predetermined amount of the return air RA is introduced from the circulation path 57b to the outside air introduction path 5, and the outside air OA. And is supplied to the air conditioning path 55d by bypassing the first flow path 30a of the heat exchange element 3A.

  The mixed air of the outside air OA and the return air RA supplied to the air conditioning path 55d is heated by passing through the first heat exchanger 21 of the heat pump air conditioner 2A functioning as a heat pump condenser, and the heat exchange element 3A. Through the second flow path 30b.

  Since the second flow path 30b of the heat exchange element 3A is in a state where the water absorbing member 33 shown in FIG. 3 is dried, the heated outside air OA and the return air passing through the second flow path 30b of the heat exchange element 3A. The humidity of RA mixed air does not change.

  Here, in the heating mode, heat exchange is performed between the outside air OA having a low temperature in winter and the air heated by the heat pump air conditioner 2A by bypassing the first flow path 30a of the heat exchange element 3A. I will not.

  Further, in the strong operation in the heating mode, the return air RA is circulated and mixed with the outside air OA, and in the winter, the return air RA that is conditioned and warmed is mixed with the outside air OA, and the outside air OA. Is warmed.

  Thereby, the temperature drop of the mixed air of the outside air OA and the return air RA heated by the heat pump air conditioner 2A is prevented, and the low temperature outside air OA is made into medium temperature air.

  Then, the mixed air of the outside air OA and the return air RA, which has reached an intermediate temperature through the heat pump air conditioner 2A and the heat exchange element 3A, is supplied into the room as an air supply SA from the air supply port 52.

  In the strong operation in the heating mode, by operating the inside air discharge fan 43, a part of the return air RA sucked from the first intake port 41 is partly replaced with a part of the outside air OA distributed to the outside air return air path 57a. The mixture is mixed, passes through the second heat exchanger 22 functioning as an evaporator of the heat pump, and is discharged from the exhaust port 42 to the outside as exhaust EA. At this time, in winter, the return air RA that has been air-conditioned and raised in temperature passes through the second heat exchanger 22 that functions as an evaporator, thereby preventing the generation of frost. Note that the dew condensation water generated in the second heat exchanger 22 is collected by the second drain pan 65b and drained to the outside.

  In the strong operation in the heating mode, by the above operation, a part of the return air RA is circulated, heated and returned to the room, the ventilation air volume is increased, and the space having a predetermined area is heated in a short time. be able to.

  Even when the air-conditioning apparatus 1B of the second embodiment performs a strong operation in the heating mode, in the winter season, the mixed air of the outside air OA and the return air RA, the temperature of which is increased according to the temperature of the return air RA. Is introduced into the heat pump air conditioner 2A, the desired humidification heating can be performed with the heating capacity of the heat pump air conditioner 2A lowered.

(5) Example of Operation in Cooling Mode FIG. 12 is an operation explanatory diagram illustrating the air flow when the air conditioning apparatus 1A executes the cooling mode with the cooling capacity set to “weak”.

  In the weak operation in the cooling mode, the flow path switching damper 58a opens the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a, adjusts the opening degree, and supplies a predetermined amount of the outside air OA to the outside air return air. Distribute to the path 57a.

  The flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, and the flow path switching damper 58c closes the flow path to the heat exchange path 55c and heats it. The flow path to the replacement bypass path 56a is opened, and the entire amount of outside air OA is supplied to the air conditioning path 55d.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and supplies the entire amount of the air-conditioned outside air OA from the air supply port 52.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and closes the flow path to the circulation path 57b, and supplies the entire amount of the return air RA to the inside air discharge path 4.

  In weak operation in the cooling mode, water supply to the heat exchange element 3A is not performed. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state.

  Further, the heat pump air conditioner 2A operates the compressor 23, causes the refrigerant to flow in the direction indicated by the arrow by the four-way valve 25, constitutes a refrigeration cycle, and causes the first heat exchanger 21 to function as an evaporator. The outside air OA is cooled by the endothermic action of the refrigerant. At this time, the second heat exchanger 22 functions as a condenser.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and a predetermined amount of outside air OA passes from the outside air introduction path 5 through the first flow path 30a of the heat exchange element 3A. Bypass is supplied to the air conditioning path 55d.

  The outside air OA supplied to the air conditioning path 55d is cooled by passing through the first heat exchanger 21 of the heat pump air conditioner 2A functioning as an evaporator of the refrigeration cycle, and the second flow path of the heat exchange element 3A. Go through 30b.

  In addition, the dew condensation water which generate | occur | produced in the 1st heat exchanger 21 is collected by the 1st drain pan 65a, and is drained outside.

  Since the second flow path 30b of the heat exchange element 3A is in a state where the water absorbing member 33 shown in FIG. 3 is dry, the cooled outside air OA passing through the second flow path 30b of the heat exchange element 3A has a humidity. It does not change.

  Here, in the cooling mode, the first flow path 30a of the heat exchange element 3A is bypassed, so that heat exchange is performed between the outdoor air OA having a high temperature in summer and the air cooled by the heat pump air conditioner 2A. I will not.

  Thereby, the temperature rise of the outside air OA cooled by the heat pump air conditioner 2A is prevented, and the high temperature outside air OA is changed to a medium or low temperature air.

  The outside air OA that has reached an intermediate temperature or a low temperature through the heat pump air conditioner 2A and the heat exchange element 3A is supplied into the room as an air supply SA from the air supply port 52.

  In the cooling mode, the inside air discharge fan 43 may be operated to link the ventilation to the cooling operation. That is, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41. The return air RA drawn from the first intake port 41 is mixed with a part of the outside air OA distributed to the outside air return passage 57a, and functions as a condenser of the refrigeration cycle. And is exhausted from the exhaust port 42 to the outside as exhaust EA. At this time, in the summer, the cooling capacity of the refrigerant is improved by passing the return air RA, which is air-conditioned and lowered in temperature, through the second heat exchanger 22 functioning as a condenser.

  In the weak operation in the cooling mode, it is possible to obtain cold air at a desired temperature by the above operation.

  In addition, when the air-conditioning apparatus 1B according to the second embodiment performs a weak operation in the cooling mode, the outdoor air OA before the air conditioning is heat-exchanged with the return air RA by the heat exchange element 7, so that in the summer the return air The outside air OA whose temperature is lowered according to the temperature of the air RA is introduced into the heat pump air conditioner 2A. Thereby, even if the cooling capacity of the heat pump air conditioner 2A is lowered, desired cooling can be performed and power consumption can be suppressed.

  FIG. 13 is an operation explanatory diagram showing the air flow when the air conditioning apparatus 1A executes the cooling mode with the cooling capacity set to “strong”.

  In the strong operation in the cooling mode, a part of the return air RA is circulated, cooled, and returned to the room so that the cooling can be performed in a short time.

  That is, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and the flow path to the circulation path 57b, adjusts the opening, and introduces a predetermined amount of the return air RA into the outside air. Distribute to path 5.

  The states of the other components are the same as in the case of weak operation in the cooling mode, and the flow path to the outside air introduction path 5 and the flow path to the outside air return path 57a are opened by the path switching damper 58a, and the opening degree is set. By adjusting, a predetermined amount of the outside air OA is distributed to the outside air return passage 57a.

  The flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, and the flow path switching damper 58c closes the flow path to the heat exchange path 55c and heats it. The flow path to the replacement bypass path 56a is opened, and the entire amount of mixed air of the outside air OA and a predetermined amount of return air RA is supplied to the air conditioning path 55d.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and the entire amount of air-conditioned mixed air of the outside air OA and the return air RA is supplied to the air supply port 52. From the air.

  Even in the strong operation in the cooling mode, water supply to the heat exchange element 3A is not performed. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state.

  Further, the heat pump air conditioner 2A operates the compressor 23, causes the refrigerant to flow in the direction indicated by the arrow by the four-way valve 25, constitutes a refrigeration cycle, and causes the first heat exchanger 21 to function as an evaporator. The mixed air of the outside air OA and the return air RA is cooled by the heat absorption action of the refrigerant. At this time, the second heat exchanger 22 functions as a condenser.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and a predetermined amount of outside air OA passes from the outside air introduction path 5 through the first flow path 30a of the heat exchange element 3A. Bypass is supplied to the air conditioning path 55d.

  Further, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41, and a predetermined amount of the return air RA is introduced from the circulation path 57b to the outside air introduction path 5, and the outside air OA. And is supplied to the air conditioning path 55d by bypassing the first flow path 30a of the heat exchange element 3A.

  The mixed air of the outside air OA and the return air RA supplied to the air conditioning path 55d is cooled by passing through the first heat exchanger 21 of the heat pump air conditioner 2A functioning as an evaporator of the refrigeration cycle, and the heat exchange element It passes through the 3A second flow path 30b.

  In addition, the dew condensation water which generate | occur | produced in the 1st heat exchanger 21 is collected by the 1st drain pan 65a, and is drained outside.

  Since the second flow path 30b of the heat exchange element 3A is in a state in which the water absorbing member 33 shown in FIG. 3 is dry, the cooled outside air OA and return air passing through the second flow path 30b of the heat exchange element 3A. The humidity of RA mixed air does not change.

  Here, in the cooling mode, the first flow path 30a of the heat exchange element 3A is bypassed, so that heat exchange is performed between the outdoor air OA having a high temperature in summer and the air cooled by the heat pump air conditioner 2A. I will not.

  In the strong operation in the cooling mode, the return air RA is circulated and mixed with the outside air OA. In the summer, the return air RA that is air-conditioned and cooled is mixed with the outside air OA, and the outside air OA. Is cooled.

  Thereby, the temperature rise of the mixed air of the outside air OA and the return air RA cooled by the heat pump air conditioner 2A is prevented, and the high temperature outside air OA is changed to the medium or low temperature air.

  Then, the mixed air of the outside air OA and the return air RA, which has become an intermediate temperature or a low temperature through the heat pump air conditioner 2A and the heat exchange element 3A, is supplied into the room as an air supply SA from the air supply port 52.

  In the strong operation in the cooling mode, by operating the inside air discharge fan 43, a part of the return air RA sucked from the first intake port 41 is partly replaced with a part of the outside air OA distributed to the outside air return air passage 57a. The mixture is mixed, passes through the second heat exchanger 22 functioning as a condenser of the refrigeration cycle, and is discharged from the exhaust port 42 to the outside as exhaust EA. At this time, in the summer, the cooling capacity of the refrigerant is improved by passing the return air RA, which is air-conditioned and lowered in temperature, through the second heat exchanger 22 functioning as a condenser.

  In the weak operation in the cooling mode, by the above operation, a part of the return air RA is circulated, cooled and returned to the room to increase the ventilation air volume, and the space having a predetermined area is cooled in a short time. be able to.

  Even in the case where the air-conditioning apparatus 1B according to the second embodiment performs a strong operation in the cooling mode, in summer, the mixed air of the outside air OA and the return air RA, the temperature of which is lowered according to the temperature of the return air RA. Is introduced into the heat pump air conditioner 2A, it becomes possible to perform desired cooling with the cooling capacity of the heat pump air conditioner 2A lowered.

(6) Operation Example in Ventilation Mode FIG. 14 is an operation explanatory diagram showing the air flow when the ventilation mode is executed with the ventilation capacity “weak” in the air conditioner 1A.

  In the weak operation in the ventilation mode, the flow path to the outside air introduction path 5 is opened by the flow path switching damper 58a and the flow path to the outside air return path 57a is closed, and the entire amount of the outside air OA is supplied to the outside air introduction path 5.

  Further, the flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b to supply the entire amount of outside air OA to the pre-air conditioning path 55a.

  Further, the flow path switching damper 58c opens the flow path to the heat exchange path 55c, closes the flow path to the heat exchange bypass path 56a, and supplies the entire amount of outside air OA to the heat exchange path 55c.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, so that the entire amount of the outside air OA is supplied from the air supply port 52.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and closes the flow path to the circulation path 57b, and supplies the entire amount of the return air RA to the inside air discharge path 4.

  In weak operation in the ventilation mode, water supply to the heat exchange element 3A is not performed. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state. Further, the heat pump air conditioner 2A stops the compressor 23 and does not operate it.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the entire amount of outside air OA sucked is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  In the heat exchange path 55c, since the heat exchange element 3A and the heat pump air conditioner 2A are not functioning, the outside air OA is not air-conditioned and is supplied into the room as the supply air SA from the supply port 52.

  When the inside air discharge fan 43 is operated, room air is sucked in as return air RA from the first air inlet 41. The return air RA drawn from the first intake port 41 is discharged from the exhaust port 42 to the outside as exhaust EA.

  FIG. 15 is an operation explanatory diagram showing another embodiment when the ventilation mode is executed by setting the ventilation capacity to “weak” in the air conditioner 1A.

  In the weak operation in the ventilation mode of the other embodiment, the flow path switching damper 58a opens the flow path to the outside air introduction path 5 and closes the flow path to the outside air return path 57a, and the entire amount of the outside air OA is removed from the outside air introduction path. 5 is supplied.

  Further, the flow path switching damper 58b closes the flow path to the pre-air conditioning path 55a and opens the flow path to the air conditioning bypass path 56b to supply the entire amount of outside air OA to the air conditioning bypass path 56b.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, and supplies the entire amount of the outside air OA from the air supply port 52.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and closes the flow path to the circulation path 57b, and supplies the entire amount of the return air RA to the inside air discharge path 4.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the entire amount of outside air OA sucked is supplied from the outside air introduction path 5 to the air conditioning bypass path 56b. Thereby, the outside air OA is supplied into the room from the supply port 52 as the supply air SA, bypassing the heat exchange element 3A and the heat pump air conditioner 2A.

  When the inside air discharge fan 43 is operated, room air is sucked in as return air RA from the first air inlet 41. The return air RA drawn from the first intake port 41 is discharged from the exhaust port 42 to the outside as exhaust EA.

  In the weak operation in the ventilation mode, the room can be ventilated by supply and exhaust by the above operation.

  When the air conditioner 1B of the second embodiment performs a weak operation in the ventilation mode, the outside air OA is heat-exchanged with the return air RA by the heat exchange element 7, so that the temperature of the return air RA is increased in summer. Accordingly, the outside air OA whose temperature is lowered is supplied into the room, and in the winter, the outside air OA whose temperature is raised according to the temperature of the return air RA 1 is supplied into the room.

  As a result, in order to replace the air in the room (inside the building) at a predetermined time, when applied to a 24-hour ventilator that performs constant ventilation, it is possible to ventilate while suppressing changes in room temperature.

  FIG. 16 is an operation explanatory diagram showing the air flow when the ventilation mode is executed with the ventilation capacity set to “strong” in the air conditioner 1A.

  In the strong operation in the ventilation mode, the ventilation air volume is increased by increasing the rotation speed of the inside air exhaust fan 43 and the outside air introduction fan 53. That is, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and the flow path to the circulation path 57b, adjusts the opening, and introduces a predetermined amount of the return air RA into the outside air. Distribute to path 5.

  The states of the other components are the same as in the case of weak operation in the ventilation mode. The flow path to the outside air introduction path 5 is opened by the flow path switching damper 58a and the flow path to the outside air return path 57a is closed. The total amount of OA is supplied to the outside air introduction path 5.

  Further, the flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, so that the total amount of the mixed air of the outside air OA and the predetermined amount of return air RA is transferred to the pre-air conditioning path 55a. Supply.

  Further, the flow path switching damper 58c opens the flow path to the heat exchange path 55c and closes the flow path to the heat exchange bypass path 56a so that the total amount of the mixed air of the outside air OA and the predetermined amount of return air RA is transferred to the heat exchange path 55c. To supply.

  Further, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c so that the entire amount of the mixed air of the outside air OA and the predetermined amount of return air RA is supplied from the air supply port 52. Air up.

  Even in strong operation in the ventilation mode, water supply to the heat exchange element 3A is not performed. Thereby, the water absorbing member 33 shown in FIG. 3 is in a dry state. Further, the heat pump air conditioner 2A stops the compressor 23 and does not operate it.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the entire amount of outside air OA sucked is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  Further, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41, and a predetermined amount of the return air RA is introduced from the circulation path 57b to the outside air introduction path 5, and the outside air OA. And supplied to the heat exchange path 55c.

  In the heat exchange path 55c, since the heat exchange element 3A and the heat pump air conditioner 2A are not functioning, the mixed air of the outside air OA and the return air RA is not air-conditioned, and is supplied from the supply port 52 to the room as the supply air SA. It is aired.

  In the strong operation in the ventilation mode, by operating the inside air discharge fan 43, a part of the return air RA sucked from the first intake port 41 is discharged from the exhaust port 42 to the outside as exhaust EA.

  FIG. 17 is an operation explanatory diagram showing another embodiment when the ventilation mode is executed by setting the ventilation capacity to “strong” in the air conditioner 1A.

  In the strong operation in the ventilation mode of another embodiment, the ventilation air volume is increased by increasing the rotation speed of the inside air exhaust fan 43 and the outside air introduction fan 53, and the heat exchange element 3A and the heat pump air conditioner 2A are bypassed.

  That is, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4 and the flow path to the circulation path 57b, adjusts the opening, and introduces a predetermined amount of the return air RA into the outside air. Distribute to path 5.

  The state of the other components is the same as in the case of the weak operation in the ventilation mode of the other embodiments, and the flow path to the outside air introduction path 5 is opened by the flow path switching damper 58a and the outside air return path 57a is opened. The flow path is closed, and the entire amount of the outside air OA is supplied to the outside air introduction path 5.

  Further, the flow path switching damper 58b closes the flow path to the pre-air conditioning path 55a and opens the flow path to the air conditioning bypass path 56b, so that the entire amount of the mixed air of the outside air OA and the predetermined amount of return air RA is transferred to the air conditioning bypass path 56b. Supply.

  Furthermore, the flow path switching damper 58d opens the flow path to the air supply port 52 and closes the flow path to the return air path 57c, so that the entire amount of the mixed air of the outside air OA and the predetermined amount of return air RA is supplied from the air supply port 52. Air up.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the entire amount of outside air OA sucked is supplied from the outside air introduction path 5 to the air conditioning bypass path 56b.

  Further, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41, and a predetermined amount of the return air RA is introduced from the circulation path 57b to the outside air introduction path 5, and the outside air OA. And supplied to the air conditioning bypass path 56b.

  Thereby, the mixed air of the outside air OA and the return air RA is supplied into the room from the supply port 52 as the supply air SA, bypassing the heat exchange element 3A and the heat pump air conditioner 2A.

  In the strong operation in the ventilation mode, by operating the inside air discharge fan 43, a part of the return air RA sucked from the first intake port 41 is discharged from the exhaust port 42 to the outside as exhaust EA.

  In strong operation in the ventilation mode, a part of the return air RA is circulated by the above operation, and the ventilation air volume is increased by increasing the number of rotations of the inside air exhaust fan 43 and the outside air introduction fan 53, so that the predetermined air width is increased. Ventilation of the space with can be performed in a short time.

  Even in the case where the air-conditioning apparatus 1B according to the second embodiment performs the strong operation in the ventilation mode, the outdoor air OA whose temperature is lowered according to the temperature of the return air RA is supplied into the room in the summer, and the winter season Then, the outside air OA whose temperature is raised according to the temperature of the return air RA is supplied into the room.

  As a result, in order to replace the air in the room (inside the building) at a predetermined time, when applied to a 24-hour ventilator that performs constant ventilation, it is possible to ventilate while suppressing changes in room temperature.

(7) Operation Example in Cleaning / Drying Mode FIG. 18 is an operation explanatory diagram showing the air flow during cleaning when the air-conditioning apparatus 1A executes the cleaning / drying mode in the summer.

  In the cleaning operation in the cleaning / drying mode after using the air conditioner 1A in summer or summer, the flow path to the outside air introduction path 5 is opened and the flow path to the outside air return path 57a is closed by the flow path switching damper 58a. The outside air OA is supplied to the outside air introduction path 5.

  Further, the flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a, closes the flow path to the air conditioning bypass path 56b, and supplies the outside air OA to the pre-air conditioning path 55a.

  Furthermore, the flow path switching damper 58c opens the flow path to the heat exchange path 55c and closes the flow path to the heat exchange bypass path 56a, and the outside air OA is the first heat exchanger of the heat exchange element 3A and the heat pump air conditioner 2A. 21 is supplied to the heat exchanging path 55c through which the gas 21 passes.

  Further, the flow path switching damper 58d closes the flow path to the air supply port 52 and opens the flow path to the return air path 57c, so that the outside air OA used for cleaning is not supplied from the air supply port 52, and the inside air discharge path Return to 4.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4, closes the flow path to the circulation path 57b, and supplies the return air RA to the inside air discharge path 4.

  In the cleaning operation in the summer cleaning / drying mode, the cleaning liquid is discharged from the dispenser 63, and sprayed to the heat exchange element 3A by the first watering device 61a through the cleaning liquid supply path 64 and the water supply path 62, and the second Is sprayed on the first heat exchanger 21 of the heat pump air conditioner 2A.

  Here, in the 1st watering apparatus 61a, by spraying a washing | cleaning liquid from the suction inlet 35a of the 1st flow path 30a of the heat exchange element 3A shown in FIG. 2, and the suction opening 35b of the 2nd flow path 30b, In the heat exchange element 3A, the cleaning liquid is supplied into the first channel 30a and the second channel 30b.

Since the cooling fins (not shown) of the heat exchange element 3A and the first heat exchanger 21 are made of a material such as aluminum or copper, the cleaning liquid contains a disinfectant that does not cause corrosion when water-soluble. In addition, an organic solvent is preferably an organic solvent having a bactericidal effect such as alcohol. Furthermore, metal ions such as silver ions (Ag ⁺ ) and copper ions (Cu ²⁺ ) may be supplied.

  The heat pump air conditioner 2A stops the compressor 23 and does not operate it.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the sucked outside air OA is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  In the heat exchange path 55c, the outside air OA passes through the first flow path 30a of the heat exchange element 3A, the outside air OA that passes through the first flow path 30a passes through the first heat exchanger 21 of the heat pump air conditioner 2A, The outside air OA that has passed through the first heat exchanger 21 returns to the heat exchange element 3A and passes through the second flow path 30b.

  Since the cleaning liquid is sprayed on the first flow path 30a and the second flow path 30b of the heat exchange element 3A and the first heat exchanger 21 of the heat pump air conditioner 2A, the heat exchange element 3A and the first flow path The portion of the heat exchanger 21 through which air passes is cleaned and sterilized. In addition, if it is set as the structure provided with a filter in the path | route which a washing | cleaning liquid passes by the flow of air, the washing | cleaning and disinfection of a filter will be attained.

  The outside air OA passing through the second flow path 30b of the heat exchange element 3A returns to the inside air discharge path 4 from the return air path 57c without being supplied from the air supply port 52.

  In addition, the excess of the cleaning liquid sprayed on the heat exchange element 3A and the first heat exchanger 21 is collected by the first drain pan 65a, and is outdoors through the first drain path 66a and the third drain path 66c. Drained into

  In the cleaning operation in the cleaning / drying mode, the inside air exhaust fan 43 is operated to link the ventilation. That is, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41. The return air RA sucked from the first intake port 41 is mixed with the outside air OA returned from the return air path 57c, and is discharged from the exhaust port 42 to the outside as the exhaust air EA.

  Here, in order to prevent the outside air OA containing the cleaning liquid from leaking from the first intake port 41, the first intake port 41 is provided with a backflow prevention damper (not shown). In the cleaning / drying mode, the damper is closed and the first intake port 41 is closed. It is preferable to prevent backflow from the intake port 41.

  In the cleaning operation in the cleaning / drying mode in the summer, the first heat exchanger of the heat pump air conditioner 2A that condenses moisture in the air mainly by executing the dehumidification / ventilation mode in the summer by the above operation. 21 and the heat exchange element 3A can be washed. Thereby, generation | occurrence | production of mold | fungi in the 1st heat exchanger 21 and the heat exchange element 3A etc. can be suppressed, and the adhering pollen and dust can be washed away.

  FIG. 19 is an operation explanatory diagram illustrating the flow of air during cleaning when the cleaning / drying mode is executed in the winter in the air conditioner 1A.

  In the cleaning operation in the cleaning / drying mode after using the air conditioner 1A in the winter or winter, the path through which air passes is the same as that in the summer cleaning / drying mode, and the flow to the outside air introduction path 5 by the flow path switching damper 58a. The passage opens and the flow path to the outside air return path 57a is closed, and the outside air OA is supplied to the outside air introduction path 5.

  Further, the flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a, closes the flow path to the air conditioning bypass path 56b, and supplies the outside air OA to the pre-air conditioning path 55a.

  Furthermore, the flow path switching damper 58c opens the flow path to the heat exchange path 55c and closes the flow path to the heat exchange bypass path 56a, and the outside air OA is the first heat exchanger of the heat exchange element 3A and the heat pump air conditioner 2A. 21 is supplied to the heat exchanging path 55c through which the gas 21 passes.

  Further, the flow path switching damper 58d closes the flow path to the air supply port 52 and opens the flow path to the return air path 57c, so that the outside air OA used for cleaning is not supplied from the air supply port 52, and the inside air discharge path Return to 4.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4, closes the flow path to the circulation path 57b, and supplies the return air RA to the inside air discharge path 4.

  In the cleaning operation in the winter cleaning / drying mode, the cleaning liquid is discharged from the dispenser 63, and sprayed to the heat exchange element 3A by the first watering device 61a through the cleaning liquid supply path 64 and the water supply path 62. Note that, for example, by closing a valve (not shown), the spraying of the cleaning liquid from the second water sprinkler 61b connected to the same water supply path 62 to the first heat exchanger 21 is not performed. Further, the heat pump air conditioner 2A stops the compressor 23 and does not operate it.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the sucked outside air OA is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  In the heat exchange path 55c, the outside air OA passes through the first flow path 30a of the heat exchange element 3A, the outside air OA that passes through the first flow path 30a passes through the first heat exchanger 21 of the heat pump air conditioner 2A, The outside air OA that has passed through the first heat exchanger 21 returns to the heat exchange element 3A and passes through the second flow path 30b.

  Since the cleaning liquid is dispersed in the first flow path 30a and the second flow path 30b of the heat exchange element 3A, the portion of the heat exchange element 3A through which air passes is cleaned and sterilized.

  The outside air OA passing through the second flow path 30b of the heat exchange element 3A returns to the inside air discharge path 4 from the return air path 57c without being supplied from the air supply port 52.

  In addition, the excess of the cleaning liquid sprayed on the heat exchange element 3A is collected by the first drain pan 65a and drained to the outside.

  In the cleaning operation in the cleaning / drying mode, the inside air exhaust fan 43 is operated to link the ventilation. That is, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41. The return air RA sucked from the first intake port 41 is mixed with the outside air OA returned from the return air path 57c, and is discharged from the exhaust port 42 to the outside as the exhaust air EA.

  In the cleaning operation in the cleaning / drying mode in winter, the second flow path 30b of the heat exchange element 3A in a wet state is cleaned by performing the humidification heating mode or the like mainly in winter by the above operation. Can do. Thereby, generation | occurrence | production of mold | fungi in the heat exchange element 3A etc. can be suppressed, and the pollen and dust which adhered can be washed away.

  FIG. 20 is an operation explanatory diagram showing the air flow during drying when the cleaning / drying mode is executed in the air conditioner 1A.

  In the drying operation in the cleaning / drying mode, the path through which air passes is the same as in the cleaning operation, and the flow path to the outside air introduction path 5 is opened by the flow path switching damper 58a and the flow path to the outside air return path 57a is closed. The outside air OA is supplied to the outside air introduction path 5.

  Further, the flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a, closes the flow path to the air conditioning bypass path 56b, and supplies the outside air OA to the pre-air conditioning path 55a.

  Furthermore, the flow path switching damper 58c opens the flow path to the heat exchange path 55c and closes the flow path to the heat exchange bypass path 56a, and the outside air OA is the first heat exchanger of the heat exchange element 3A and the heat pump air conditioner 2A. 21 is supplied to the heat exchanging path 55c through which the gas 21 passes.

  Further, the flow path switching damper 58d closes the flow path to the air supply port 52 and opens the flow path to the return air path 57c, so that the outside air OA used for cleaning and drying is not supplied from the air supply port 52, and the internal air Return to the discharge path 4.

  Further, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge path 4, closes the flow path to the circulation path 57b, and supplies the return air RA to the inside air discharge path 4.

  In the drying operation in the cleaning / drying mode, spraying of the cleaning liquid or the like from the first watering device 61a and the second watering device 61b is not performed. Further, the heat pump air conditioner 2A stops the compressor 23 and does not operate it.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the sucked outside air OA is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  In the heat exchange path 55c, the outside air OA passes through the first flow path 30a of the heat exchange element 3A, the outside air OA that passes through the first flow path 30a passes through the first heat exchanger 21 of the heat pump air conditioner 2A, The outside air OA that has passed through the first heat exchanger 21 returns to the heat exchange element 3A and passes through the second flow path 30b.

  Thereby, the heat exchange element 3A, the first heat exchanger 21 and the like are dried by the air flow.

  The outside air OA passing through the second flow path 30b of the heat exchange element 3A returns to the inside air discharge path 4 from the return air path 57c without being supplied from the air supply port 52.

  In the drying operation in the cleaning / drying mode, the inside air exhaust fan 43 is operated to link the ventilation. That is, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41. The return air RA sucked from the first intake port 41 is mixed with the outside air OA returned from the return air path 57c, and is discharged from the exhaust port 42 to the outside as the exhaust air EA.

  In the drying operation in the cleaning / drying mode, the heat exchange element 3A and the first heat exchanger 21 of the heat pump air conditioner 2A can be dried by the above operation, and the heat exchange element 3A and the first heat exchanger can be dried. Mold generation at 21 etc. can be suppressed.

  Then, by linking the cleaning operation and the drying operation, it is possible to prevent the cleaning liquid used for cleaning from remaining, and the air conditioner 1A can be cleaned regardless of the manual work of the user or the contractor.

  Accordingly, it is possible to prevent harmful substances and odors from being supplied into the room when the operation is resumed.

  FIG. 21 is an operation explanatory view showing another embodiment at the time of drying when the cleaning / drying mode is executed in the air conditioner 1A.

  In another embodiment of the drying operation in the cleaning / drying mode, a part of the return air RA is circulated. That is, the flow path switching damper 58e opens the flow path from the first intake port 41 to the inside air discharge circuit 4 and the flow path to the circulation path 57b, adjusts the opening, and introduces a predetermined amount of the return air RA into the outside air. Distribute to path 5.

  The state of the other components is the same as in the drying operation by ventilation in the cleaning / drying mode. The flow path to the outside air introduction path 5 is opened by the flow path switching damper 58a and the flow path to the outside air return path 57a is The outside air OA is supplied to the outside air introduction path 5.

  The flow path switching damper 58b opens the flow path to the pre-air conditioning path 55a and closes the flow path to the air conditioning bypass path 56b, and supplies the mixed air of the outside air OA and the return air RA to the pre-air conditioning path 55a.

  Further, the flow path switching damper 58c opens the flow path to the heat exchange path 55c and closes the flow path to the heat exchange bypass path 56a so that the mixed air of the outside air OA and the return air RA is mixed with the heat exchange element 3A and the heat pump air conditioner 2A. To the heat exchange path 55c through which the first heat exchanger 21 passes.

  Further, the flow path switching damper 58d closes the flow path to the air supply port 52 and opens the flow path to the return air path 57c, and the mixed air of the outside air OA and the return air RA used for cleaning and drying is supplied to the air supply port 52. Return to the inside air discharge path 4 without supplying air.

  When the outside air introduction fan 53 is operated in the above state, outside air OA is sucked from the second intake port 51, and the sucked outside air OA is supplied from the outside air introduction path 5 to the heat exchange path 55c.

  Further, when the inside air discharge fan 43 is operated, room air is sucked as the return air RA from the first air inlet 41, and a predetermined amount of the return air RA is introduced from the circulation path 57b to the outside air introduction path 5, and the outside air OA. And supplied to the heat exchange path 55c.

  In the heat exchange path 55c, the mixed air of the outside air OA and the return air RA passes through the first flow path 30a of the heat exchange element 3A, and the mixed air of the outside air OA and the return air RA passing through the first flow path 30a is a heat pump. The mixed air of the outside air OA and the return air RA that has passed through the first heat exchanger 21 of the air conditioner 2A and passed through the first heat exchanger 21 returns to the heat exchange element 3A and passes through the second flow path 30b.

  Thereby, the heat exchange element 3A, the first heat exchanger 21 and the like are dried by the air flow.

  The mixed air of the outside air OA and the return air RA passing through the second flow path 30b of the heat exchange element 3A returns from the return air path 57c to the inside air discharge path 4 without being supplied from the supply port 52.

  By operating the inside air discharge fan 43, a part of the return air RA sucked from the first intake port 41 is mixed with the outside air OA returned from the return air path 57c, and is discharged from the exhaust port 42 to the outside as the exhaust air EA. Discharged.

  In the drying operation by circulation ventilation in the cleaning / drying mode, the heat exchange element 3A and the first heat exchanger 21 of the heat pump air conditioner 2A can be dried by the above operation, and the heat exchange element 3A and the first heat exchanger 21A can be dried. Mold generation in the heat exchanger 21 or the like can be suppressed.

(8) Application example of control of air conditioner The air conditioners 1A and 1B include a temperature sensor and a humidity sensor for detecting the temperature and humidity in the room to be the air-conditioned area, and a controller operated by a user installed in the air-conditioned area The air volume, the opening degree of each damper, the amount of water supply, and the operation of the heat pump air conditioner 2A are controlled so as to be set by the user or the like.

  For example, in the dehumidification ventilation mode, the temperature of the supply air SA is adjusted by adjusting the opening of the flow path switching damper 58c and adjusting the amount of air that bypasses the first flow path 30a of the heat exchange element 3A. Can be adjusted. Further, the temperature and humidity of the supply air SA can be adjusted by adjusting the opening of the flow path switching damper 58b and adjusting the amount of air that bypasses the heat exchange element 3A and the heat pump air conditioner 2A.

  Even in the humidifying and heating mode, the temperature and humidity of the supply air SA can be adjusted by adjusting the amount of air that bypasses the heat exchange element 3A. Further, the humidity of the supply air SA can be adjusted by adjusting the amount of water supplied to the heat exchange element 3A.

  Furthermore, it is also possible to prepare several operation modes as described above, and adjust the temperature and humidity by operating while switching between the dehumidification ventilation mode and the cooling mode, the humidification heating mode and the heating mode, and the like.

  In the control related to cleaning, the accumulated operation time may be measured, and when the accumulated operation time exceeds a predetermined set value, it may be displayed by a controller and the above-described cleaning / drying mode may be selected and executed. This makes it possible to periodically clean the air conditioner. The cleaning / drying mode may be selected at an arbitrary timing by the user.

  Further, in conjunction with the measurement of the accumulated operation time, if the set value is exceeded, a notification for instructing filter replacement may be notified by a display on the controller or the like.

  In the control relating to water supply / drainage, the amount of the cleaning liquid in the dispenser 63 is detected, and when the remaining amount falls below a predetermined set value, a notification instructing replenishment is notified by a display on the controller or the like. This prevents the cleaning liquid used for cleaning from being lost and the normal cleaning from being performed.

  The first drain pan 65a and the second drain pan 65b are provided with water level sensors, and the operation is stopped when the water level exceeds a predetermined set value. Thereby, water leakage can be prevented.

  Furthermore, a water leak sensor is provided near the lower surface of the first drain pan 65a and the second drain pan 65b, and the operation is stopped when water leak is detected. Thereby, it can alert | report that the water leak has generate | occur | produced and can implement implementation of a maintenance.

<Application example of air conditioner>
22 and 23 are configuration diagrams illustrating application examples of the air conditioner 1A according to the first embodiment. The air conditioner 1A described above can be implemented in various forms. For example, the inside air discharge path 4 may be integrated or may be configured independently. In the air conditioner 11A shown in FIG. 22 (a), heat exchange is performed from the second intake port 51 communicating with the outside. An outside air introduction path 5 that passes through the first flow path 30a and the air conditioning path 55d, which is the path 55c, returns to the heat exchange path 55c, passes through the second flow path 30b, and communicates with the room through the air supply port 52; The inside air discharge path 4 communicated with the room through the first air inlet 41 and communicated with the outside through the air outlet 42 is provided in one housing.

  In the above configuration, the outside air OA sucked from the second air inlet 51 passes through the heat exchange element 3A and the first heat exchanger 21 of the heat pump air conditioner 2A, and is supplied indoors as the air supply SA from the air inlet 52. To be supplied with air. Further, the return air RA sucked from the first air inlet 41 is exhausted from the exhaust port 42 to the outside as exhaust EA.

  Thereby, the operation | movement of the dehumidification ventilation mentioned above with the single apparatus is attained. In addition, what is necessary is just to set it as the structure provided with the heat exchange bypass path | route 56a in the apparatus which performs humidification heating.

  Furthermore, as shown in FIG. 22B, in the air conditioner 11 </ b> B in which the inside air discharge path 4 is made independent, an air conditioner system 13 is configured by combining with the ventilator 12.

  Further, as shown in FIG. 22C, in the air conditioner 11C in which the inside air discharge path 4 is made independent, the first intake port 41 communicating with the room and the outside air introduction path 5 on the upstream side of the heat exchange path 55c are provided. The return air RA may be circulated as a configuration including the circulation path 57b communicated. In the air conditioner 11 </ b> C in which the inside air discharge path 4 is made independent, the air conditioner system 13 is configured by combining with the ventilator 12.

  Thereby, operation | movement, such as dehumidification ventilation etc. interlock | cooperated with circulation of the indoor air mentioned above, is attained.

  Further, as shown in FIG. 23A, in the air conditioner 11D in which the inside air discharge path 4 is made independent, the first air inlet 41 communicating with the room independently of the outside air introduction path 5 and the heat exchange path 55c. The return air RA may be circulated as a configuration provided with a circulation path 57b that communicates the first flow path 30a.

  As a result, operations such as dehumidification, heating, and cooling in conjunction with the circulation of room air can be performed. Further, in the air conditioner 11 </ b> D in which the inside air discharge path 4 is made independent, the air conditioner system 13 is configured by combining with the ventilator 12.

  Further, as shown in FIG. 23B, in the air conditioner 11E in which the inside air discharge path 4 is made independent, it branches from the outside air introduction path 5 on the downstream side of the heat exchange path 55c and communicates with the outside through the exhaust port. As a configuration including the return air path 57c, the outside air OA may be exhausted.

  As a result, the above-described cleaning / drying operations can be performed. In the air conditioner 11E in which the inside air discharge path 4 is made independent, the air conditioner system 13 is configured by combining with the ventilator 12.

<Example of air conditioner installation mode>
FIG. 24 is a configuration diagram illustrating a first example of the air conditioner according to the present embodiment. The air conditioner 1A-1 of the first embodiment is composed of two casings 8a and 8b installed indoors.

  One housing 8a includes a heat exchange element 3A, a first heat exchanger 21 of the heat pump air conditioner 2A, a water supply / drainage system corresponding to the heat exchange element 3A and the first heat exchanger 21, and a first heat exchanger 21A. An intake port 41, an air supply port 52, and the like are provided. Further, the other casing 8b has a configuration corresponding to an outdoor unit of a general air conditioner device, which is a configuration excluding the first heat exchanger 21 of the heat pump air conditioner 2A, an exhaust port 42, 2 intake ports 51 and the like. Thereby, the housing 8a and the housing 8b are connected by two pipes through which air for supply and exhaust passes and a pipe through which the refrigerant passes. Note that the housing 8a and the housing 8b may be configured integrally or may be configured independently.

  Here, since it is necessary to replenish the cleaning liquid, the dispenser 63 may be configured to be installed outside the housing so that it can be easily handled.

  FIGS. 25-30 is a block diagram which shows the example of installation of the air conditioner 1A-1 of a 1st form example, and demonstrates an example of the building of this Embodiment.

  In the air conditioner 1 </ b> A- 1 of the first embodiment, the housing 8 a and the housing 8 b are installed on the back of the ceiling of the building 91. As described above, when the housing 8b is installed indoors, the outside air cannot be directly used as the air passing through the second heat exchanger 22 of the heat pump air conditioner 2A. The cooling capacity of the heat exchanger 22 is ensured.

  In FIG. 25, the air is supplied to one room and, for example, is sucked from the same one room. The air supply duct 91a and the air intake duct 91b are connected to the housing 8a, and the first air inlet 41 and the air inlet are connected. 52 is constituted. In addition, an intake duct 91c and an exhaust duct 91d are connected to the housing 8b to constitute a second intake port 51 and an exhaust port 42.

  In FIG. 26, a plurality of air supply ducts 91a are connected to the housing 8a and provided with a plurality of air supply ports 52 to supply air to multiple chambers, and the housing 8a includes a first air supply port 41. It is the structure which inhales from a room.

  In FIG. 27, a branch chamber 81 for branching an air supply path into a plurality of air supply ducts 91a is connected to supply air to multiple chambers, and a housing 8a includes a first air supply port 41 and intake air from one chamber. It is the structure to do.

  In FIG. 28, a collecting chamber 82 for collecting a plurality of intake ducts 91b is connected to supply air to one room and to intake air from multiple rooms.

  In FIG. 29, a plurality of air supply ducts 91a are connected to the housing 8a to provide a plurality of air supply ports 52, and a collecting chamber 82 that collects the plurality of air intake ducts 91b is connected to supply air to multiple chambers. At the same time, the air is drawn from multiple chambers.

  In FIG. 30, a branch chamber 81 that branches an air supply path into a plurality of air supply ducts 91a and a collective chamber 82 that collects a plurality of air intake ducts 91b are connected to supply air to multiple chambers and to intake air from multiple chambers. It is the structure to do.

  FIG. 31 is a configuration diagram showing a second example of the air conditioner according to the present embodiment. The air conditioner 1A-2 according to the second embodiment includes a housing 8c installed indoors and an outdoor unit 8d installed outdoors.

  The casing 8c includes a heat exchange element 3A, a first heat exchanger 21 of the heat pump air conditioner 2A, a water supply / drainage system corresponding to the heat exchange element 3A and the first heat exchanger 21, and a first intake port. 41, an air supply port 52, an exhaust port 42, a second intake port 51, an inside air exhaust fan 43, an outside air introduction fan 53, and the like. In addition, the outdoor unit 8d includes a configuration corresponding to an outdoor unit of a general air conditioner device, which is a configuration excluding the first heat exchanger 21 of the heat pump air conditioner 2A, and a second heat exchanger 22. A cooling fan 83 that blows air is provided. Thereby, the housing 8c and the outdoor unit 8d are connected by a pipe through which the refrigerant passes.

  In addition, it is also possible to configure an air conditioner in combination with an existing 24-hour ventilation device. For example, although not illustrated, a heat exchange element, a first heat exchanger of a heat pump air conditioner, and a heat exchange element are not illustrated. And a water supply / drainage system corresponding to the first heat exchanger, an air supply port, an outside air introduction path, and the like, and connected to an air supply duct of a 24-hour ventilator.

  32 to 37 are configuration diagrams showing examples of installation of the air conditioner 1A-2 according to the second embodiment.

  In the air conditioner 1A-2 of the second embodiment, the housing 8c is installed on the back of the ceiling of the building 91, and the outdoor unit 8d is installed outdoors. As described above, when the outdoor unit 8d is installed outdoors, the outside air can be used as the air passing through the second heat exchanger 22 of the heat pump air conditioner 2A. Therefore, the configuration may be such that the return air RA from the room is not used. The inside air discharge path 4 and the outside air introduction path 5 can be separated from the outdoor unit 8d.

  In FIG. 32, the air is supplied to one room and, for example, is sucked from the same one room. The air intake duct 91a and the air intake duct 91b are connected to the housing 8c, and the first air inlet 41 and the air inlet are connected. 52 is constituted. In addition, an intake duct 91c and an exhaust duct 91d are connected to the housing 8c to constitute a second intake port 51 and an exhaust port 42.

  In FIG. 33, a plurality of air supply ducts 91a are connected to the housing 8c and provided with a plurality of air supply ports 52 to supply air to multiple chambers, and the housing 8c is provided with a first air supply port 41. It is the structure which inhales from a room.

  In FIG. 34, a branch chamber 81 for branching an air supply path into a plurality of air supply ducts 91a is connected to supply air to multiple chambers, and a housing 8c includes a first air supply port 41 and intake air from one chamber. It is the structure to do.

  In FIG. 35, a collecting chamber 82 for collecting a plurality of intake ducts 91b is connected to supply air to one room and to intake air from multiple rooms.

  In FIG. 36, a plurality of air supply ducts 91a are connected to the housing 8c to provide a plurality of air supply ports 52, and a collecting chamber 82 that collects the plurality of air intake ducts 91b is connected to supply air to multiple chambers. At the same time, the air is drawn from multiple chambers.

  In FIG. 37, a branch chamber 81 that divides the air supply path into a plurality of air supply ducts 91a and a collective chamber 82 that collects a plurality of air intake ducts 91b are connected to supply air to multiple chambers and to intake air from multiple chambers. It is the structure to do.

  FIG. 38 is a configuration diagram illustrating a third example of the air conditioner according to the present embodiment. The air conditioner 1A-3 of the third embodiment is composed of an outdoor unit 8e installed outdoors.

  The outdoor unit 8e includes a cooling fan 83 that blows air to the second heat exchanger 22 of the heat pump air conditioner 2A, and the AC outdoor unit 8f having the same configuration as the outdoor unit of a general air conditioner device. The exchange element 3A, the first heat exchanger 21 of the heat pump air conditioner 2A, the water supply / drainage system corresponding to the heat exchange element 3A and the first heat exchanger 21, the first intake port 41, and the supply port 52 And an exhaust port 42, a second intake port 51, an inside air exhaust fan 43, an outside air introduction fan 53, and the like.

  39 and 40 are configuration diagrams showing an installation example of the air conditioner 1A-3 according to the third embodiment.

  In the air conditioner 1A-3 of the third embodiment, the outdoor unit 8e is installed outdoors. As described above, when the outdoor unit 8e is installed outdoors, the outside air can be used as the air passing through the second heat exchanger 22 of the heat pump air conditioner 2A. Therefore, the configuration may be such that the return air RA from the room is not used.

  In FIG. 39, air is supplied to one room and is ventilated by, for example, sucking from the same room, and an air supply duct 91a and an air intake duct 91b are connected to the outdoor unit 8e, and the first air inlet 41 and An air supply port 52 is configured.

  In FIG. 40, the branch chamber 81 which branches an air supply path | route into the several air supply duct 91a is connected, and it is the structure which inhales and ventilates from one room while supplying air to multiple rooms.

  FIGS. 41-43 is a block diagram which shows the modification of air conditioner 1A-3 of a 3rd form example.

  The air conditioner 1A-4 of the modified example has a configuration in which the ventilation function is made independent. In FIG. 41, an air supply duct 91a is connected to the outdoor unit 8e, and an air supply port 52 is configured to supply air to one room. At the same time, a ventilator 92 is installed in another room, and ventilation is performed from one room using an undercut or the like of a door (not shown).

  In FIG. 42, a branch chamber 81 for branching an air supply path into a plurality of air supply ducts 91a is connected to supply air to multiple rooms, and a ventilator 92 is installed in one room, such as undercutting of a door (not shown). It is the structure which ventilates from one room using.

  In FIG. 43, a branch chamber 81 for branching an air supply path into a plurality of air supply ducts 91a is connected to supply air to multiple rooms, and a ventilation device 92 is installed in multiple rooms to ventilate from multiple rooms. It is.

  The present invention is applied to an air conditioner having a 24-hour ventilation function.

It is a block diagram which shows an example of the air conditioner of 1st Embodiment. It is a block diagram which shows an example of embodiment of a heat exchange element. It is a block diagram which shows an example of embodiment of a heat exchange element. It is a block diagram which shows an example of the air conditioner of 2nd Embodiment. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing dehumidification ventilation mode by weak operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing dehumidification ventilation mode by strong operation. It is a graph which shows the relationship between absolute humidity and dehumidification amount. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing humidification heating mode by weak operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing humidification heating mode by strong operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing heating mode by weak operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing heating mode by strong operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing air_conditioning | cooling mode by weak operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing air_conditioning | cooling mode by strong operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing ventilation mode by weak operation. It is operation | movement explanatory drawing which shows other embodiment at the time of performing ventilation mode by weak operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of performing ventilation mode by strong driving | operation. It is operation | movement explanatory drawing which shows other embodiment at the time of performing ventilation mode by strong driving | operation. It is operation | movement explanatory drawing which shows the flow of the air at the time of washing | cleaning at the time of performing washing | cleaning and drying mode in the summer. It is operation | movement explanatory drawing which shows the flow of the air at the time of washing | cleaning at the time of performing washing | cleaning and drying mode in winter. It is operation | movement explanatory drawing which shows the flow of the air at the time of drying at the time of performing washing | cleaning and drying mode. It is operation | movement explanatory drawing which shows the flow of the air at the time of drying by circulation ventilation at the time of performing washing | cleaning and drying mode. It is a block diagram which shows the application example of 1 A of air conditioners of 1st Embodiment. It is a block diagram which shows the application example of 1 A of air conditioners of 1st Embodiment. It is a block diagram which shows the 1st example of an air conditioner. It is a block diagram which shows the example of installation of the air conditioner of a 1st form example. It is a block diagram which shows the example of installation of the air conditioner of a 1st form example. It is a block diagram which shows the example of installation of the air conditioner of a 1st form example. It is a block diagram which shows the example of installation of the air conditioner of a 1st form example. It is a block diagram which shows the example of installation of the air conditioner of a 1st form example. It is a block diagram which shows the example of installation of the air conditioner of a 1st form example. It is a block diagram which shows the 2nd example of an air conditioner. It is a block diagram which shows the example of installation of the air conditioner of a 2nd form example. It is a block diagram which shows the example of installation of the air conditioner of a 2nd form example. It is a block diagram which shows the example of installation of the air conditioner of a 2nd form example. It is a block diagram which shows the example of installation of the air conditioner of a 2nd form example. It is a block diagram which shows the example of installation of the air conditioner of a 2nd form example. It is a block diagram which shows the example of installation of the air conditioner of a 2nd form example. It is a block diagram which shows the 3rd example of an air conditioner. It is a block diagram which shows the example of installation of the air conditioner of a 3rd example. It is a block diagram which shows the example of installation of the air conditioner of a 3rd example. It is a block diagram which shows the modification of the air conditioner of a 3rd form example. It is a block diagram which shows the modification of the air conditioner of a 3rd form example. It is a block diagram which shows the modification of the air conditioner of a 3rd form example.

Explanation of symbols

  1A, 1B ... air conditioning device, 2A ... heat pump air conditioner, 3A ... heat exchange element, 4 ... inside air discharge path, 5 ... outside air introduction path, 7 ... heat exchange element, 8a ... Case, 8b ... Case, 8c ... Case, 8d ... Outdoor unit, 8e ... Outdoor unit, 20 ... Piping, 21 ... First heat exchanger , 22 ... second heat exchanger, 23 ... compressor, 24 ... expansion valve, 25 ... four-way valve, 30a ... first flow path, 30b ... second Flow path, 31 ... partition wall, 32a, 32b ... flow path forming plate, 33 ... water absorbing member, 34a, 34b ... slit, 35a, 35b ... suction port, 36a, 36b ... Air outlet, 41... First air inlet, 42... Air outlet, 43... Inside air exhaust fan, 44 a, 44 b, filter, 51. 52, air supply port, 53 ... external air introduction fan, 54a, 54b ... filter, 55a ... path before air conditioning, 55b ... path after air conditioning, 55c ... heat exchange path, 55d ... Air conditioning path, 56a ... Heat exchange bypass path, 56b ... Air conditioning bypass path, 57a ... Outside air return path, 57b ... Circulation path, 57c ... Return path, 58a- 58e: a flow path switching damper, 61a: a first watering device, 61b: a second watering device, 62: a water supply path, 63: a dispenser, 64: a cleaning liquid supply path, 65a ... 1st drain pan, 65b ... 2nd drain pan, 66a ... 1st drainage path, 66b ... 2nd drainage path, 66c ... 3rd drainage path

Claims (4)

An outside air introduction path through which air that is inhaled from the outside and supplied into the room passes,
Inside air discharge path through which air sucked from the room and discharged outside the room passes,
A heat exchange element that exchanges heat between the air passing through the isolated first flow path and the air passing through the second flow path;
A watering device for supplying water to the heat exchange element;
A heat pump air conditioner for air conditioning;
A recovery device for recovering excess water supplied to the heat exchange element and condensed water generated in the heat exchange element and the heat pump air conditioner;
The outside air introduction path and the suction side of the first flow path of the heat exchange element are communicated, and the blowing side of the first flow path is communicated with the suction side of the second flow path through the heat pump air conditioner. A heat exchange path in which the blowing side of the second flow path communicates with the room ;
By bypassing the first flow path of the heat exchange element, the outside air introduction path communicates with the heat exchange path, and the air sucked from outside and supplied into the room is supplied to the first of the heat exchange element. A heat exchange bypass path for bypassing the flow path of
A flow rate of air passing through the heat exchange path or air passing through the heat exchange path via the heat exchange bypass path, and an amount of moisture supplied to the second flow path of the heat exchange element by the watering device; The operation of cooling and dehumidifying the air passing through the heat exchange path by the heat pump air conditioner by controlling the air conditioning in the heat pump air conditioner, or the heat passing through the heat exchange bypass path The air passing through the exchange path is conditioned by the heat pump air conditioner, and the room is set by performing an operation of humidifying with the water supplied to the second flow path of the heat exchange element by the watering device. while the humidity and temperature, to be replaced the air in the building at a given time, as well as supply of outdoor air to the room by the outdoor air introducing path, said gas discharge path Air-conditioning system and performs constantly ventilated with more discharge indoor air to the outdoor. An outside air introduction path through which air that is inhaled from the outside and supplied into the room passes,
Inside air discharge path through which air sucked from the room and discharged outside the room passes,
A heat exchange element that exchanges heat between the air passing through the isolated first flow path and the air passing through the second flow path;
A watering device for supplying water to the heat exchange element;
A heat pump air conditioner for air conditioning;
A recovery device for recovering excess water supplied to the heat exchange element and condensed water generated in the heat exchange element and the heat pump air conditioner;
The outside air introduction path and the suction side of the first flow path of the heat exchange element are communicated, and the blowing side of the first flow path is communicated with the suction side of the second flow path through the heat pump air conditioner. A heat exchange path in which the blowing side of the second flow path communicates with the room;
By bypassing the first flow path of the heat exchange element, the outside air introduction path communicates with the heat exchange path, and the air sucked from outside and supplied into the room is supplied to the first of the heat exchange element. A heat exchange bypass path for bypassing the flow path of
An exhaust heat recovery heat exchange element that performs heat exchange between air passing through the outside air introduction path and air passing through the inside air discharge path upstream from the heat exchange path;
After the exhaust heat recovery heat exchange element brings the temperature of the air passing through the outside air introduction path close to the temperature of the air passing through the inside air discharge path,
A flow rate of air passing through the heat exchange path or air passing through the heat exchange path via the heat exchange bypass path, and an amount of moisture supplied to the second flow path of the heat exchange element by the watering device; The operation of cooling and dehumidifying the air passing through the heat exchange path by the heat pump air conditioner by controlling the air conditioning in the heat pump air conditioner, or the heat passing through the heat exchange bypass path The air passing through the exchange path is conditioned by the heat pump air conditioner, and the room is set by performing an operation of humidifying with the water supplied to the second flow path of the heat exchange element by the watering device. while the humidity and temperature, as well as supply of outdoor air to the room by the air introduction path, and discharging the indoor air to the outdoor by said air discharge passage, denominated a predetermined time Air conditioning system which is characterized in that always ventilated to replace the air in the. The air conditioner according to claim 1 or 2, wherein air passing through the first flow path of the heat exchange element is cooled by air passing through the second flow path to perform dehumidification. The air conditioner according to any one of claims 1 to 3 is provided.
A building characterized by that.

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