WO2003067159A1 - Humidity conditioning device - Google Patents

Abstract

A humidity conditioning device, comprising an adsorbing element and a refrigerant circuit, wherein, to prevent a performance from lowering due to frost formation on evaporators at the time of humidification, for example, an operation to raise the evaporation temperature of the refrigerant circuit (100) is performed for defrosting when frost formation occurs on the evaporators (103, 104) by primary air passing the evaporators (103, 104) in the refrigerant circuit (100).

Description

 m Itoda

Technical field

 The present invention relates to a humidity control apparatus for adjusting the humidity of air, and more particularly to a humidity control apparatus having an adsorption element and a refrigerant circuit. Background art

 2. Description of the Related Art Conventionally, as disclosed in Japanese Patent Application Laid-Open No. H11-248187, a humidity control apparatus using an adsorbing element has been known. In this humidity control apparatus, a dehumidifying operation for supplying dehumidified air to a room and a humidifying operation for supplying humidified air to a room are switched. A rotor element is used as the suction element, and the suction element is housed in a case and is configured to be driven to rotate around its central axis. In addition, in the adsorption element, a part of the air on the adsorption side passes, and the other part of the adsorption element passes the air on the reproduction side heated by the electric heater.

 During the humidifying operation of the humidity control device, the air on the regeneration side provided with the moisture desorbed from the adsorption element is supplied into the room, and the air on the adsorption side deprived of the moisture by the adsorption element is discharged outside the room. On the other hand, during the dehumidification operation, the air on the adsorption side from which moisture was deprived by a part of the adsorption element is supplied to the room, and the remaining part of the adsorption element is regenerated by the heated air on the regeneration side and passes through the adsorption element. The regenerated air on the regeneration side is discharged outside the room.

 In the above humidity controller, an electric heater is used as a heat source for heating the air on the regeneration side, but a heat pump may be used as a heat source instead. Normally, a refrigerant circuit constituting a heat pump is provided with two heat exchangers, one of which serves as an evaporator and the other serves as a condenser. In the heat exchanger that functions as a condenser, the air on the regeneration side is heated by exchanging heat with the refrigerant. On the other hand, in the heat exchanger serving as an evaporator, the air on the adsorption side after passing through the adsorption element exchanges heat with the refrigerant.

When a heat pump is used, during the humidification operation, the air on the regeneration side heated by the condenser is humidified by the adsorption element and supplied to the room, while the adsorbent element is prepared for humidification. The air on the adsorption side, which has given moisture to the particles, passes through the evaporator and is discharged outside the room. In addition, during the dehumidification operation, the air on the adsorption side dehumidified by the adsorption element is cooled by the evaporator and supplied to the room, while the air on the regeneration side is heated by the condenser to regenerate the adsorption element and To be exhausted.

 Solution 1

 By the way, when the outdoor temperature is lower than the predetermined temperature during the humidifying operation, frost is formed on the evaporator, and the evaporating capacity is reduced. Then, as the air volume on the adsorption side decreases, the amount of water supplied to the adsorption element decreases, and as a result, the humidification amount when performing the humidification operation decreases, and the performance decreases. Also, the coefficient of performance (COP) of the device is reduced.

 The present invention has been made in view of such a problem, and an object of the present invention is to reduce performance due to frost on an evaporator during a humidifying operation of a humidity control device provided with a refrigerant circuit. Is to be able to prevent this. Disclosure of the invention

 According to the present invention, in a humidity control device using both an adsorption element (81, 82) and a refrigerant circuit (100), when the evaporator (104) becomes frosted, a defrost operation is performed to suppress a decrease in performance. Things.

 Specifically, the first to sixth solution means adopted by the present invention include: an adsorption element (81, 82) having an adsorbent and bringing the adsorbent into contact with air; and circulating a refrigerant to form a refrigeration cycle. An adsorbing operation for adsorbing the water in the first air to the adsorbent of the adsorbing element (81, 82); and a second refrigerant heated by the refrigerant in the refrigerant circuit (100). A regeneration operation for regenerating the adsorbing element (81, 82) with air is performed, and a humidifying operation for supplying the second air to the room and discharging the first air and a second air for supplying the first air to the room. It is premised on a humidity control device configured to enable at least humidification operation among dehumidification operations that discharge water.

 The humidity control apparatus according to the first aspect of the present invention is characterized in that the refrigerant circuit (100) increases the evaporating temperature of the refrigerant when the evaporator (104) of the refrigerant circuit (100) is frosted. (104) It is characterized in that it is configured to perform defrosting.

Further, a second solution taken by the present invention is the defrosting method according to the first solution. It specifies the specific contents of the operation, and the compression mechanism of the refrigerant circuit (100) is composed of a variable capacity compressor (101), and the refrigerant circuit (100) is used when the evaporator (104) is frosted. In addition, the compressor (101) is characterized in that it is configured to control the operating capacity of the compressor (101) to increase the evaporation temperature.

 A third solution taken by the present invention specifies another specific content when defrosting is performed in the first solution, and the expansion mechanism of the refrigerant circuit (100) is variable. The refrigerant circuit (100) is configured to increase the evaporation temperature by controlling the opening of the expansion valve (110) when the evaporator (104) is frosted. It is characterized by being done.

 In the first to third solutions, when the evaporator (104) is frosted during the humidification operation, for example, when the outside air temperature is low, for example, the power expansion valve (110) that reduces the operation capacity of the compressor (101) is reduced. By performing control to make the opening degree of) slightly more open than in the normal operation, an operation to increase the evaporation temperature of the refrigerant is performed. When the evaporating temperature of the refrigerant rises in this way, the frost attached to the evaporator (104) can be melted and removed.

 A fourth solution taken by the present invention is that the refrigerant circuit (100) has a power S and a hot gas bypass passage (130) capable of supplying a gas refrigerant from the compression mechanism (101) to the evaporator (104). When the evaporator (104) is frosted, the gas refrigerant discharged from the compression mechanism (101) is supplied to the evaporator (104) through the hot gas bypass passage (130) to thereby form the evaporator (104). Characterized in that it is configured to perform defrosting.

 In the fourth solution, when the evaporator (104) is frosted, the gas refrigerant discharged from the compression mechanism (101) is supplied to the evaporator (104) via the hot gas bypass passage (130), and The temperature of the vessel (104) rises. Therefore, the frost adhering to the evaporator (104) can be melted and removed.

 A fifth solution taken by the present invention is that the refrigerant circuit (100) has a reversible power S and a circulating direction of the refrigerant, and the refrigerant is subjected to a reverse cycle when the evaporator (104) is frosted. It is characterized in that the evaporator (104) is defrosted by circulating.

In this fifth solution, when the evaporator (104) is frosted, the refrigerant circuit (100) Is circulated in a reverse cycle. Therefore, the frosted heat exchanger (104) which has been used as the evaporator becomes the condenser, and the temperature of the heat exchanger rises to remove the frost. Also, during this reverse cycle operation, the heat exchanger (103) that had been used as a condenser before acts as an evaporator.

 The sixth solution taken by the present invention is that the refrigerant circuit (100) has a power S, and when the evaporator (104) is frosted, the compression mechanism (101) is stopped and the first air is evaporated ( It is characterized in that it is configured to defrost the evaporator (104) by blowing air to the evaporator (104).

 In the sixth solution, when the evaporator (104) becomes frosted, the compression mechanism (101) stops and the operation of blowing the first air to the evaporator is performed. During the humidification operation of this humidity control device, usually, the outdoor air is heated as the second air by the condenser (102) and then humidified by the adsorption elements (81, 82) and taken into the room, while the indoor air is used as the first air. It is discharged through the evaporator (104). In other words, relatively high temperature room air flows through the evaporator (104). Therefore, at this time, if the compression mechanism (101) is stopped and only the indoor air is blown without flowing the refrigerant to the evaporator (104), since the indoor air is relatively high in temperature, the evaporator (104) cannot be used. ) Frost is removed.

 Further, the seventh and eighth solutions of the present invention are: an adsorption element (81, 82) having an adsorbent and bringing the adsorbent into contact with air; and a refrigeration cycle for circulating a refrigerant to perform a refrigeration cycle. An adsorbing operation for adsorbing moisture in the first air to the adsorbent of the adsorbing element (81, 82); and a second air heated by the refrigerant in the refrigerant circuit (100). The dehumidifying operation of supplying the first air to the room and discharging the second air and performing the dehumidifying operation of supplying the second air to the room and discharging the first air are performed by performing the regeneration operation of regenerating the adsorption element (81, 82). It is assumed that the humidity control device is configured to be capable of both humidification operation.

The seventh solution means is a regenerative heat exchanger (102) for exchanging heat with the refrigerant for heating the second air supplied to the adsorbing element (81, 82) with the refrigerant circuit (100). A first heat exchanger (103) that cools the air supplied to the room during the humidifying operation by exchanging heat with the refrigerant, and a second heat exchanger that cools the air discharged during the humidifying operation by exchanging heat with the refrigerant. (104), and when the second heat exchanger (104) is frosted, the regenerative heat exchanger (102) is used as a condenser, the first heat exchanger (103) is used as an evaporator, and the second heat exchanger is used. The container (104) Thus, the second heat exchanger (104) is configured to be defrosted.

 In the seventh solution, in the humidifying operation, the second air is heated by the regenerative heat exchanger (102), then humidified by the adsorption elements (81, 82) and supplied to the room, while the first air is supplied to the room. Is cooled by exchanging heat with the refrigerant in the second heat exchanger (104) and discharged outside the room. When the second heat exchanger (104) is frosted, the air heated by the regenerative heat exchanger (102) is humidified by the adsorption elements (81, 82) and supplied to the room, and the second frosted second air is supplied to the room. Heat exchanger

By temporarily stopping the supply of the refrigerant to (104), the temperature of the second heat exchanger (104) rises, and frost is removed. In this case, the second heat exchanger (104) is operated as an evaporator, for example, for about 80% of the humidification operation time, and the function of the evaporator is stopped for about the remaining 20% of the time. 2Defrosts the heat exchanger (104). An eighth solution taken by the present invention is a regenerative heat for heating the refrigerant circuit (100) by exchanging heat with the refrigerant for the force S and the second air supplied to the adsorption elements (81, 82). An exchange (102), a first heat exchanger (103) for exchanging air supplied to the room indoors during the dehumidification operation with a refrigerant to cool the air, and exchanging air discharged during the humidification operation with the refrigerant. A second heat exchanger (104) for cooling, and when the second heat exchanger (104) is frosted, the regenerative heat exchanger (102) and the second heat exchanger (104) are connected to a condenser. The second heat exchanger (104) is configured to be defrosted by using the first heat exchanger (103) as an evaporator.

In the eighth solution, while the humidifying operation is performed by the same operation as the seventh solution, when the second heat exchanger (104) is frosted, the heat is heated by the regenerative heat exchanger (102). The frosted second heat exchanger (104) is temporarily used as a condenser while the humidified air is humidified by the adsorption element (81, 82) and supplied to the room, whereby the second heat exchanger ( 104) The temperature rises and frost is removed. Also in this case, the second heat exchanger (104) operates as an evaporator for about 80% of the humidification operation time, and functions as a condenser for the remaining about 20% of the time. The second heat exchanger (104) can be defrosted. According to a ninth solution of the present invention, in the first solution to the eighth solution, the ninth solution includes a first adsorption element (81) and a second adsorption element (82). 1 The first suction device (81) performs the suction operation and the second suction device (82) performs the regeneration operation. The operation is alternately switched between the second operation in which the second adsorption element (82) performs the adsorption operation and the first adsorption element (81) performs the regeneration operation, and at least the second air is supplied indoors. It is characterized by being constituted.

 In the ninth solution, while the first operation and the second air are alternately switched, the humidified second air is supplied to the room during the regeneration operation by the adsorption element (81, 82). The dehumidification operation can be performed continuously by supplying the dehumidified first air to the room during the adsorption operation by the adsorption elements (81, 82). That is, in the ninth solution, a so-called batch operation is performed in which the two adsorption elements (81, 82) are alternately used on the adsorption side and the regeneration side.

 A tenth solution according to the present invention is the humidity control side passage according to the ninth solution, wherein the adsorption element (81, 82) forces the first air or the second air to flow alternately. (85) and a cooling-side passage (86) through which a cooling fluid flows. The adsorbing element (81) The heat-exchanging force between the first air and the cooling fluid makes the adsorbing element (81, 82) It is characterized in that the heat of adsorption of the first air in the above is recovered by a cooling fluid. As the cooling fluid, for example, the second air before being heated by the refrigerant in the refrigerant circuit (100) can be used.

 In the tenth solution, the heat of adsorption of the first air generated during the adsorption operation in the ninth solution is recovered by the cooling fluid, so that the first air is cooled. You.

 —Effects—

 According to each solution of the present invention, when the humidification operation is performed when the outside air temperature is low and the evaporator (second heat exchanger) (104) is frosted, the evaporator (104) is operated by the above-described respective operation operations. ) Is removed, and the reduced evaporation capacity due to frosting is restored to its original state. Therefore, a decrease in the amount of moisture flowing through the evaporator (104) due to a decrease in the amount of air flowing through the evaporator (104) is prevented, and the amount of humidification during humidification is also restored. In addition, a decrease in COP can be prevented.

Further, according to the second solution, defrosting can be performed only by reducing the operation capacity of the compression mechanism (101), and according to the third solution, the defrosting can be performed only by adjusting the opening of the expansion valve (110). Since it can be frosted, any simple operation can prevent the deterioration in performance due to defrosting. According to the fourth solution, the high-temperature refrigerant is supplied from the hot gas bypass passage (130) to the evaporator (104). According to the fifth solution, the refrigerant is circulated. Since the high-temperature refrigerant is supplied to the evaporator (104) by reversing the direction, the defrosting can be performed quickly and reliably in any case.

 Further, according to the sixth solution, in the state of the humidifying operation in which the relatively high-temperature first air is flowing through the evaporator (104), the defrosting can be performed only by stopping the compression mechanism (101). It can be done easily and reliably. Here, in general air conditioners of a vapor compression refrigeration cycle, since low-temperature outdoor air flows through the evaporator during heating, defrosting is performed even if the compressor is stopped and only ventilation is performed. Although it is not possible, in the case of the humidity control device of the present invention using both the adsorption element (81, 82) and the refrigerant circuit (100), the first air (room air) flows through the evaporator (104) during humidification. Thus, defrosting becomes possible only by stopping the compression mechanism (101).

 Further, according to the seventh and eighth solutions, three heat exchangers of the regenerative heat exchanger (102), the first heat exchanger (103), and the second heat exchanger (104) are provided. When the second heat exchanger (104) serving as an evaporator is frosted during the humidification operation, the second heat exchanger (104) is temporarily stopped or set as a condenser, and the first heat exchange is performed. By using the evaporator as the evaporator (103), the second heat exchanger (104) can be defrosted while the humidification operation is continued.

 According to the ninth solution, the humidifying operation and the dehumidifying operation can be performed continuously by performing the batch operation using the first adsorption element (81) and the second adsorption element (82). .

 According to the tenth solution, in addition to obtaining the same effect as the ninth solution, the first air can be cooled by the cooling fluid. When the operation is configured to be possible, it is possible to prevent the blowout temperature from increasing during the dehumidifying operation. BRIEF DESCRIPTION OF THE FIGURES

 FIG. 1 is an exploded perspective view showing a configuration of a humidity control apparatus according to Embodiment 1 and a first operation during a dehumidification operation.

FIG. 2 is an exploded perspective view showing a second operation during the dehumidifying operation in the humidity control apparatus according to the first embodiment. FIG.

 FIG. 3 is an exploded perspective view showing a first operation during a humidification operation in the humidity control apparatus according to the first embodiment.

 FIG. 4 is an exploded perspective view showing a second operation during the humidification operation in the humidity control apparatus according to the first embodiment.

 FIG. 5 is a schematic configuration diagram illustrating a main part of the humidity control apparatus according to the first embodiment.

 FIG. 6 is a schematic perspective view showing the adsorption element of the humidity control apparatus according to the first embodiment.

 FIG. 7 is a piping diagram illustrating a refrigerant circuit of the humidity control apparatus according to the first embodiment.

 FIG. 8 is an explanatory diagram conceptually showing the operation of the humidity control apparatus according to the first embodiment. FIG. 9 is a piping diagram illustrating a refrigerant circuit of the humidity control apparatus according to the second embodiment.

 FIG. 10 is a piping diagram showing a modification of the second embodiment.

 FIG. 11 is a piping diagram illustrating a refrigerant circuit of the humidity control apparatus according to the third embodiment. FIG. 12 is a piping diagram showing a modification of the third embodiment.

 FIG. 13 is an explanatory diagram conceptually showing the operation of the humidity control apparatus according to the fourth embodiment. FIG. 14 is an explanatory diagram conceptually showing the operation of the humidity control apparatus according to the fifth embodiment. FIG. 15 is an explanatory diagram conceptually showing the operation of the humidity control apparatus according to the sixth embodiment. BEST MODE FOR CARRYING OUT THE INVENTION

 [Embodiment 1]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, “up”, “down”, “left”, “right”, “front”, “rear”, “front”, and “back” mean those in the drawings referred to.

The humidity control apparatus according to the present embodiment is configured to switch between a dehumidifying operation in which dehumidified first air is supplied indoors and a humidifying operation in which humidified second air is supplied indoors. Have been. Also, this humidity control device includes a refrigerant circuit (100) and two adsorption elements (81, 82), and an adsorption element (81, 82) used for the adsorption operation on the dehumidification side and a regenerator on the humidification side. It is configured to perform a so-called batch type operation in which the adsorption elements (81, 82) used for the raw operation are alternately switched. In addition, this humidity control device is a differential for removing frost when the heat exchanger (second heat exchanger) (104) serving as an evaporator is frosted during the humidification operation. It is configured to perform lost operation.

 《Overall configuration of humidity control device》

 First, the configuration of the humidity control apparatus according to the present embodiment will be described with reference to FIGS. 1, 5, 6, and 7. FIG.

 As shown in FIGS. 1 and 5, the humidity control device has a slightly flat rectangular parallelepiped casing (10). The casing (10) has two adsorbing elements (81, 82) having an adsorbent and bringing the adsorbent into contact with air, and a refrigerant circuit (100) ( (See Fig. 7). The refrigerant circuit (100) includes a compressor (101), a regenerative heat exchanger (102), a first heat exchanger (103), and a second heat exchanger (104). The details of the refrigerant circuit (100) will be described later.

 As shown in FIG. 6, the adsorption element (81, 82) is configured by alternately stacking flat plate members (83) and corrugated corrugated members (84). The flat plate member (83) is formed in a rectangular shape. The corrugated plate member (84) is formed in the same rectangular shape as the flat plate member (83), and is laminated so that the ridge directions of the adjacent corrugated plate members (84) cross each other at an angle of 90 °. ing. And the adsorption element (81, 82) is formed in a rectangular parallelepiped or quadrangular prism shape as a whole.

 In the adsorbing element (81, 82), in the laminating direction of the flat plate member (83) and the corrugated plate member (84), the humidity control side passage (85) and the cooling side passage (86) are flat plate members (83). ) Are formed alternately. In the adsorption element (81, 82), the humidity control side passage (85) is opened on the long side of the flat plate member (83), and the cooling side passage (86) is opened on the short side of the flat plate member (83). ) Is open. In this adsorption element (81, 82), the front and rear end faces of the drawing constitute a closed surface in which neither the humidity control side passage (85) nor the cooling side passage (86) is open. I have.

 In the adsorption element (81, 82), the surface of the flat plate member (83) facing the humidity control side passage (85) or the surface of the corrugated plate member (84) provided in the humidity control side passage (85) is provided. An adsorbent for adsorbing water vapor is applied. Examples of this type of adsorbent include silica gel, zeolite, and ion exchange resin.

As shown in FIG. 1, in the casing (10), an outdoor panel (11) is provided on the most front side, and an indoor panel (12) is provided on the most rear side. Room The outer panel (11) has an outdoor air inlet (13) formed near its left end, and an outdoor air outlet (16) formed near its right end. On the other hand, the indoor-side panel (12) has an indoor-side outlet (14) near its left end, and an indoor-side inlet (15) near its right end.

 Inside the casing (10), a first partition plate (20) and a second partition plate (30) are provided in order from the near side to the far side. The internal space of the casing (10) is divided into three spaces by the first and second partition plates (20, 30). The space between the outdoor panel (11) and the first partition (20) is divided into an upper outdoor outdoor flow path (41) and a lower outdoor lower flow path (42). The outdoor outdoor upper flow path (41) communicates with the outdoor space through the outdoor air outlet (16). The outdoor lower flow path (42) communicates with the outdoor space through the outdoor suction port (13).

 An exhaust fan (96) is installed near the right end of the space between the outdoor panel (11) and the first partition (20). In addition, a second heat exchanger (104) is installed in the outdoor upper flow path (41). The second heat exchanger (104) is a so-called cross-fin type fin-and-tube heat exchanger, and the air and refrigerant circuit (41) flowing through the upper outdoor passage (41) toward the exhaust fan (96) 100) to exchange heat with the refrigerant. That is, the second heat exchanger (104) is for exchanging heat between the air discharged outside and the refrigerant.

 The first partition (20) has a first right opening (21), a first left opening (22), a first upper right opening (23), a first lower right opening (24), a first upper left opening (25). ), And the first lower left opening (26) are formed. Each of these openings (21, 22,...) Has an openable / closable shutter and is configured to be openable and closable.

The first right opening (21) and the first left opening (22) are vertically long rectangular openings. The first right opening (21) is provided near the right end of the first partition (20). The first left opening (22) is provided near the left end of the first partition (20). The first upper right opening (23), the first lower right opening (24), the first upper left opening (25), and the first lower left opening (26) are horizontally long rectangular openings. The first upper right opening (23) is provided to the left of the first right opening (21) in the upper part of the first partition plate (20). The first lower right opening (24) is provided in the lower part of the first partition plate (20), to the left of the first right opening (21). No. (1) The upper left opening (25) is provided on the upper part of the first partition plate (20), to the right of the first left opening (22). The first lower left opening (26) is provided at the lower part of the first partition plate (20), right next to the first left opening (22).

 Two adsorption elements (81, 82) are provided between the first partition (20) and the second partition (30). These adsorption elements (81, 82) are arranged side by side at predetermined intervals. Specifically, a first suction element (81) is provided on the right side, and a second suction element (82) is provided on the left side.

 In the first and second suction elements (81, 82), the laminating direction of the flat plate member (83) and the corrugated plate member (84) is the longitudinal direction of the casing (10) (the direction from the front to the back in FIG. 1). ), And the stacking directions of the flat plate members (83) and the like in each case are installed so as to be parallel to each other. Further, each of the adsorption elements (81, 82) has left and right side surfaces of a casing (10) side plate, upper and lower surfaces of a top plate and a bottom plate of the casing (10), and front and rear end surfaces of an outdoor panel (11) and a room. They are arranged so that they are almost parallel to the inner panel (12).

 Each of the suction elements (81, 82) installed in the casing (10) has a cooling-side passage (86) opened on the left and right side surfaces. One side of the first adsorbing element (81) where the cooling-side passage (86) opens is opposed to one side of the second adsorbing element (82) where the cooling-side passage (86) opens. I'm wearing

 The space between the first partition plate (20) and the second partition plate (30) is divided into several partitions by the right channel (51), the left channel (52), the upper right channel (53), It is divided into a lower right channel (54), an upper left channel (55), a lower left channel (56), and a central channel (57).

The right flow path (51) is formed on the right side of the first adsorption element (81), and communicates with the cooling-side passage (86) of the first adsorption element (81). The left flow path (52) is formed on the left side of the second adsorption element (82), and communicates with the cooling-side passage (86) of the second adsorption element (82). The upper right channel (53) is formed above the first adsorption element (81), and communicates with the humidity control side passage (85) of the first adsorption element (81). The lower right flow path (54) is formed below the first adsorption element (81) and communicates with the humidity control side passage (85) of the first adsorption element (81). The upper left flow path (55) is formed above the second adsorption element (82), and communicates with the humidity control passage (85) of the second adsorption element (82). The lower left channel (56) is below the second adsorption element (82). And communicates with the humidity control side passageway (85) of the second adsorption element (82).

 The central flow path (57) is formed between the first adsorption element (81) and the second adsorption element (82), and communicates with the cooling-side passage (86) of both adsorption elements (81, 82). In this central channel (57), the cross-sectional shape of the channel shown in FIGS. 1 and 5 is square.

 The regenerative heat exchanger (102) is a so-called cross-fin type fin 'and' tube heat exchanger that exchanges heat between the air flowing through the central flow path (57) and the refrigerant in the refrigerant circuit (100). It is configured. This regenerative heat exchanger (102) is arranged in the central channel (57). That is, the regenerative heat exchanger (102) is installed between the first adsorbing element (81) and the second adsorbing element (82) arranged on the left and right. Further, the regenerative heat exchanger (102) is provided so as to partition the central flow path (57) up and down in a state of being laid almost horizontally. Further, the regenerative heat exchanger (102) is arranged such that the upper surface thereof is slightly lower than the lower surfaces of the first and second adsorption elements (81, 82).

 A right-side shirt (61) is provided between the first adsorption element (81) and the regenerative heat exchanger (102). The right side shutter (61) partitions the lower portion of the regenerative heat exchanger (102) in the central channel (57) from the lower right channel (54), and is configured to be openable and closable. . On the other hand, a left shirt (62) is provided between the second adsorption element (82) and the regenerative heat exchanger (102). The left shirt (62) partitions the lower part of the regenerative heat exchanger (102) in the central flow path (57) from the lower left flow path (56), and is configured to be openable and closable. .

The channel (41, 42) between the outdoor panel (11) and the first partition (20) and the channel (51, 42) between the first partition (20) and the second partition (30) 52,...) Are switched between a communicating state and a blocking state by an opening / closing shutter provided at an opening (21, 22,...) Of the first partition plate (20). Specifically, when the first right opening (21) is in an open state, the right flow path (51) and the outdoor lower flow path (42) communicate with each other. When the first left opening (22) is in an open state, the left flow path (52) and the outdoor lower flow path (42) communicate with each other. When the first upper right opening (23) is in an open state, the upper right flow path (53) communicates with the outdoor upper flow path (41). When the first lower right opening (24) is in an open state, the lower right flow path (54) communicates with the outdoor lower flow path (42). When the first upper left opening (25) is in an open state, the upper left flow path (55) and the outdoor upper flow path (41) communicate with each other. When the first lower left opening (26) is open, the lower left flow path (56) and the outdoor side The lower channel (42) communicates.

 The second partition (30) has a second right opening (31), a second left opening (32), a second upper right opening (33), a second lower right opening (34), and a second upper left opening (35). ), And a second lower left opening (36) are formed. Each of these openings (31, 32,...) Has an openable / closable shutter and is configured to be openable and closable.

 The second right opening (31) and the second left opening (32) are vertically long rectangular openings. The second right opening (31) is provided near the right end of the second partition (30). The second left opening (32) is provided near the left end of the second partition (30). The second upper right opening (33), the second lower right opening (34), the second upper left opening (35), and the second lower left opening (36) are horizontally long rectangular openings. The second upper right opening (33) is provided to the left of the second right opening (31) above the second partition plate (30). The second lower right opening (34) is provided below the second partition plate (30) and to the left of the second right opening (31). The second upper left opening (35) is provided on the upper part of the second partition plate (30), right next to the second left opening (32). The second lower left opening (36) is provided below the second partition plate (30) and to the right of the second left opening (32).

 The space between the indoor panel (12) and the second partition plate (30) is divided into an upper indoor upper flow path (46) and a lower indoor lower flow path (47). The indoor upper flow path (46) communicates with the indoor space through the indoor outlet (14). The indoor lower flow path (47) communicates with the indoor space through the indoor suction port (15).

 In the space between the indoor side panel (12) and the second partition (30), an air supply fan (95) is installed near the left end. In addition, a first heat exchanger (103) is installed in the indoor-side upper flow path (46). The first heat exchanger (103) is a so-called cross-fin type fin ■ And-tube heat exchanger, and the air and refrigerant circuit flowing through the upper air passage (46) toward the air supply fan (95) It is configured to exchange heat with (100) refrigerant. That is, the first heat exchanger (103) is for exchanging heat between the air supplied to the room and the refrigerant.

The flow path between the first partition plate (20) and the second partition plate (30) and the flow path between the second partition plate (30) and the outdoor panel (11) are defined by the second partition plate (30). The open / close shutter provided at the opening of () switches between the open and closed states. Specifically, the second right opening When (31) is in an open state, the right flow path (51) and the indoor lower flow path (47) communicate with each other. When the second left opening (32) is in the open state, the left flow path (52) communicates with the indoor lower flow path (47). When the second upper right opening (33) is in an open state, the upper right flow path (53) communicates with the indoor upper flow path (46). When the second lower right opening (34) is in the open state, the lower right flow path (54) communicates with the indoor lower flow path (47). When the second upper left opening (35) is in the open state, the upper left flow path (55) communicates with the indoor upper flow path (46). When the second lower left opening (36) is in the open state, the lower left flow path (56) communicates with the indoor lower flow path (47).

 《Configuration of refrigerant circuit》

 As shown in FIG. 7, the refrigerant circuit (100) is a closed circuit filled with a refrigerant. The refrigerant circuit (100) includes a compressor (101), a regenerative heat exchanger (102), a first heat exchanger (103), a second heat exchanger (104), a receiver (105), a four-way switching valve ( 120), and an electric expansion valve (110). In the refrigerant circuit (100), a vapor compression refrigeration cycle is performed by circulating the refrigerant.

 In the refrigerant circuit (100), the discharge side of the compressor (101) is connected to one end of the regenerative heat exchanger (102). The other end of the regenerative heat exchanger (102) is connected to one end of an electric expansion valve (110) via a receiver (105). The other end of the electric expansion valve (110) is connected to the first port (121) of the four-way switching valve (120). In the four-way switching valve (120), the second port (122) is connected to one end of the second heat exchanger (104), and the fourth port (124) is connected to one end of the first heat exchanger (103). Have been. The third port (123) of the four-way switching valve (120) is sealed. The other end of the first heat exchanger (103) and the other end of the second heat exchanger (104) are respectively connected to the suction side of the compressor (101). The four-way switching valve (120) has a state in which the first port (121) and the second port (122) communicate with each other and the third port (123) and the fourth port (124) communicate with each other. The state is switched to a state in which the 121) and the fourth port (124) communicate with each other and the second port (122) and the third port (123) communicate with each other. As described above, the third port (123) of the four-way switching valve (120) is closed. That is, in the refrigerant circuit (100) of the present embodiment, the four-way switching valve (120) is used as a three-way valve.

 One operation one

Next, the operation of the humidity control device will be described. This humidity control device is described above. The dehumidifying operation and the humidifying operation are switched as described above. In addition, the humidity control device performs the first operation in which the first adsorption device (81) performs the adsorption operation and the second adsorption device (82) performs the regeneration operation, and the second adsorption device (82) performs the adsorption operation. The dehumidifying operation or the humidifying operation is performed by alternately switching the operation with the second operation in which the regeneration operation is performed by the first adsorption element (81) and supplying the first air or the second air into the room.

 《Dehumidification operation》

 As shown in Figs. 1 and 2, when the air supply fan (95) is driven during the dehumidification operation, outdoor air is taken into the casing (10) through the outdoor air inlet (13). This outdoor air flows into the outdoor-side lower flow path (42) as first air. On the other hand, when the exhaust fan (96) is driven, indoor air is taken into the casing (10) through the indoor-side suction port (15). This room air flows into the room-side lower flow path (47) as second air.

 Also, during the dehumidification operation, in the refrigerant circuit (100), the regenerative heat exchanger (102) becomes a condenser and the first heat exchanger (103) becomes an evaporator, while the second heat exchanger (104) becomes an evaporator. Is dormant. The operation of the refrigerant circuit (100) will be described later.

 The first operation of the dehumidifying operation will be described with reference to FIGS. In the first operation, an adsorption operation on the first adsorption element (81) and a reproduction operation on the second adsorption element (82) are performed. That is, in the first operation, the air is dehumidified by the first adsorption element (81), and at the same time, the adsorbent of the second adsorption element (82) is regenerated.

 As shown in Fig. 1, in the first partition (20), the first lower right opening (24) and the first upper left opening (25) are in communication with each other, and the remaining openings (21, 22, 23, 26 ) Is shut off. In this state, the first lower right opening (24) connects the lower outdoor passage (42) and the lower right passage (54), and the first upper left opening (25) connects the upper left passage (55) to the outdoor. The upper flow path (41) communicates with the upper flow path (41).

In the second partition plate (30), the second right opening (31) and the second upper right opening (33) are in communication with each other, and the remaining openings (32, 34, 35, 36) are in a closed state. . In this state, the lower right side flow path (47) and the right side flow path (51) communicate with each other through the second right side opening (31), and the upper right side flow path (53) and the upper side inside the room through the second upper right opening (33). The flow path (46) communicates. The right side shutter (61) is closed, and the left side shutter (62) is open. In this state, the lower part of the regenerative heat exchanger (102) in the central flow path (57) communicates with the lower left flow path (56) via the left shirt (62).

 The first air taken into the casing (10) flows into the lower right channel (54) from the outdoor lower channel (42) through the first lower right opening (24). On the other hand, the second air taken into the casing (10) flows into the right flow path (51) from the indoor lower flow path (47) through the second right opening (31).

 As shown in FIG. 5 (a), the first air in the lower right flow path (54) flows into the humidity control side passageway (85) of the first adsorption element (81). While flowing through the humidity control side passage (85), the water vapor contained in the first air is adsorbed by the adsorbent. The first air dehumidified by the first adsorption element (81) flows into the upper right channel (53).

 On the other hand, the second air in the right flow path (51) flows into the cooling-side passage (86) of the first adsorption element (81). While flowing through the cooling side passage (86), the second air absorbs the heat of adsorption generated when the water vapor of the first air is adsorbed by the adsorbent in the humidity control side passage (85). That is, the second air flows through the cooling-side passage (86) as a cooling fluid. The second air, which has lost the heat of adsorption, flows into the central channel (57) and passes through the regenerative heat exchanger (102). At that time, in the regeneration heat exchanger (102), the second air is heated by heat exchange with the refrigerant. Thereafter, the second air flows from the central channel (57) into the lower left channel (56).

 The second air heated by the first adsorption element (81) and the regenerative heat exchanger (102) is introduced into the humidity control passage (85) of the second adsorption element (82). In the humidity control passage (85), the adsorbent is heated by the second air, and water vapor is released from the adsorbent. That is, the regeneration of the second adsorption element (82) is performed. The water vapor desorbed from the adsorbent flows into the upper left channel (55) together with the second air.

 As shown in FIG. 1, the dehumidified first air that has flowed into the upper right channel (53) is sent into the indoor upper channel (46) through the second upper right opening (33). The first air passes through the first heat exchanger (103) while flowing through the indoor upper flow path (46), and is cooled by heat exchange with the refrigerant. The dehumidified and cooled first air is then supplied to the room through the indoor side outlet (14).

On the other hand, the second air flowing into the upper left channel (55) passes through the first upper left opening (25), and It flows into the outer upper channel (41). The second air passes through the second heat exchanger (104) while flowing through the outdoor upper flow path (41). At that time, the second heat exchanger (104) is at rest and the second air is neither heated nor cooled. Then, the second air used for cooling the first adsorbing element (81) and regenerating the second adsorbing element (82) is discharged outside through the outdoor air outlet (16).

 The second operation of the dehumidifying operation will be described with reference to FIGS. In the second operation, the adsorption operation for the second adsorption element (82) and the reproduction operation for the second adsorption element (81) are performed, contrary to the first operation. That is, in the second operation, the air is dehumidified by the second adsorption element (82), and at the same time, the adsorbent of the first adsorption element (81) is regenerated.

 As shown in FIG. 2, in the first partition (20), the first upper right opening (23) and the first lower left opening (26) are in communication with each other, and the remaining openings (21, 22, 24, 25) Is shut off. In this state, the upper right channel (53) communicates with the outdoor upper channel (41) through the first upper right opening (23), and the outdoor lower channel (42) and the lower left channel through the first lower left opening (26). The flow path (56) communicates.

 In the second partition (30), the second left opening (32) and the second upper left opening (35) are in communication with each other, and the remaining openings (31, 33, 34, 36) are in a closed state. . In this state, the lower left flow path (47) and the left flow path (52) communicate with each other through the second left opening (32), and the upper left flow path (55) and the upper indoor path through the second upper left opening (35). The flow path (46) communicates.

 The left shirt (62) is closed and the right shirt (61) is open. In this state, the lower part of the regenerative heat exchanger (102) in the central flow path (57) communicates with the lower right flow path (54) via the right side shutter (61).

 The first air taken into the casing (10) flows into the lower left channel (56) from the outdoor lower channel (42) through the first lower left opening (26). On the other hand, the second air taken into the casing (10) flows into the left flow path (52) from the indoor lower flow path (47) through the second left opening (32).

As shown in FIG. 5 (b), the first air in the lower left flow path (56) flows into the humidity control side passageway (85) of the second adsorption element (82). While flowing through the humidity control side passage (85), the first air Is adsorbed by the adsorbent. The first air dehumidified by the second adsorption element (82) flows into the upper left flow path (55).

 On the other hand, the second air in the left flow path (52) flows into the cooling-side passage (86) of the second adsorption element (82). While flowing through the cooling side passage (86), the second air absorbs the heat of adsorption generated when the water vapor of the first air is adsorbed by the adsorbent in the humidity control side passage (85). That is, the second air flows through the cooling-side passage (86) as a cooling fluid. The second air, which has lost the heat of adsorption, flows into the central channel (57) and passes through the regenerative heat exchanger (102). At that time, in the regeneration heat exchanger (102), the second air is heated by heat exchange with the refrigerant. Thereafter, the second air flows from the central channel (57) to the lower right channel (54).

 The second air heated by the second adsorption element (82) and the regenerative heat exchanger (102) is introduced into the humidity control passage (85) of the first adsorption element (81). In the humidity control passage (85), the adsorbent is heated by the second air, and water vapor is released from the adsorbent. That is, the regeneration of the first adsorption element (81) is performed. The water vapor desorbed from the adsorbent flows into the upper right channel (53) together with the second air.

 As shown in FIG. 2, the dehumidified first air that has flowed into the upper left flow path (55) is sent into the indoor upper flow path (46) through the second upper left opening (35). The first air passes through the first heat exchanger (103) while flowing through the indoor upper flow path (46), and is cooled by heat exchange with the refrigerant. The dehumidified and cooled first air is then supplied to the room through the indoor side outlet (14).

 On the other hand, the second air flowing into the upper right channel (53) flows into the outdoor upper channel (41) through the first upper right opening (23). The second air passes through the second heat exchanger (104) while flowing through the outdoor upper flow path (41). At that time, the second heat exchanger (104) is at rest and the second air is neither heated nor cooled. Then, the second air used for cooling the second adsorbing element (82) and regenerating the first adsorbing element (81) is discharged outside through the outdoor air outlet (16).

 << Humidification operation >>

As shown in FIGS. 3 and 4, when the air supply fan (95) is driven during the humidification operation, the outdoor air is taken into the casing (10) through the outdoor air inlet (13). The outdoor air flows into the outdoor lower channel (42) as second air. Meanwhile, exhaust When the fan (96) is driven, room air is taken into the casing (10) through the room-side suction port (15). This room air flows into the room-side lower flow path (47) as first air.

 In the humidification operation, in the refrigerant circuit (100), the regenerative heat exchanger (102) becomes a condenser and the second heat exchanger (104) becomes an evaporator, while the first heat exchanger (103) becomes an evaporator. Is dormant. The operation of the refrigerant circuit (100) will be described later.

 The first operation of the humidification operation will be described with reference to FIGS. In the first operation, an adsorption operation on the first adsorption element (81) and a reproduction operation on the second adsorption element (82) are performed. That is, in the first operation, the air is humidified by the second adsorption element (82), and the adsorbent of the first adsorption element (81) adsorbs water vapor.

 As shown in FIG. 3, in the first partition (20), the first right opening (21) and the first upper right opening (23) are in communication with each other, and the remaining openings (22, 24, 25, 26) Is shut off. In this state, the first lower right opening (21) connects the lower outdoor channel (42) to the right channel (51), and the first upper right opening (23) connects the upper right channel (53) to the upper outdoor portion. The flow path (41) communicates.

 In the second partition plate (30), the second lower right opening (34) and the second upper left opening (35) are in communication with each other, and the remaining openings (31, 32, 33, 36) are in a closed state. I have. In this state, the indoor lower flow path (47) and the lower right flow path (54) communicate with each other by the second lower right opening (34), and the upper left flow path (55) and the indoor side flow through the second upper left opening (35). The upper flow path (46) communicates with the upper flow path (46).

 The right side shutter (61) is closed, and the left side shutter (62) is open. In this state, the lower part of the regenerative heat exchanger (102) in the central flow path (57) communicates with the lower left flow path (56) via the left shirt (62).

 The first air taken into the casing (10) flows into the lower right channel (54) from the indoor lower channel (47) through the second lower right opening (34). On the other hand, the second air taken into the casing (10) flows into the right flow path (51) from the outdoor lower flow path (42) through the first right opening (21).

As shown in FIG. 5 (a), the first air in the lower right flow path (54) flows into the humidity control side passage (85) of the first adsorption element (81). While flowing through the humidity control side passage (85), the first air Is adsorbed by the adsorbent. The first air deprived of moisture by the first adsorption element (81) flows into the upper right channel (53).

 On the other hand, the second air in the right flow path (51) flows into the cooling-side passage (86) of the first adsorption element (81). While flowing through the cooling side passage (86), the second air absorbs the heat of adsorption generated when the water vapor of the first air is adsorbed by the adsorbent in the humidity control side passage (85). That is, the second air flows through the cooling-side passage (86) as a cooling fluid. The second air, which has lost the heat of adsorption, flows into the central channel (57) and passes through the regenerative heat exchanger (102). At that time, in the regeneration heat exchanger (102), the second air is heated by heat exchange with the refrigerant. Thereafter, the second air flows from the central channel (57) into the lower left channel (56).

 The second air heated by the first adsorption element (81) and the regenerative heat exchanger (102) is introduced into the humidity control passage (85) of the second adsorption element (82). In the humidity control passage (85), the adsorbent is heated by the second air, and water vapor is released from the adsorbent. That is, the regeneration of the second adsorption element (82) is performed. Then, the water vapor desorbed from the adsorbent is provided to the second air, and the second air is humidified. The second air humidified by the second adsorption element (82) then flows into the upper left flow path (55).

 As shown in FIG. 3, the second air that has flowed into the upper left flow path (55) flows into the indoor upper flow path (46) through the second upper left opening (35). The second air passes through the first heat exchanger (103) while flowing through the indoor-side upper flow path (46). At that time, the first heat exchanger (103) is at rest and the second air is neither heated nor cooled. Then, the second air humidified by the second adsorption element (82) is supplied to the room through the indoor side outlet (14).

 On the other hand, the first air flowing into the upper right channel (53) is sent to the outdoor upper channel (41) through the first upper right opening (23). The first air passes through the second heat exchanger (104) while flowing through the outdoor-side upper flow path (41), and is cooled by heat exchange with the refrigerant. After that, the first air deprived of moisture and heat is discharged outside through the outdoor outlet (16).

The second operation of the humidifying operation will be described with reference to FIGS. In the second operation, the adsorption operation on the second adsorption element (82) and the reproduction operation on the first adsorption element (81) are performed, contrary to the first operation. In other words, in the second operation, the air is humidified by the first adsorption element (81), and the adsorbent of the second adsorption element (82) generates water vapor. Adsorb.

 As shown in FIG. 4, in the first partition (20), the first left opening (22) and the first upper left opening (25) are in communication with each other, and the remaining openings (21, 23, 24, 26) Is shut off. In this state, the first lower left opening (22) connects the lower outdoor channel (42) to the left channel (52), and the first upper left opening (25) connects the upper left channel (55) to the upper outdoor unit. The flow path (41) communicates.

 In the second partition plate (30), the second upper right opening (33) and the second lower left opening (36) are in communication with each other, and the remaining openings (31, 32, 34, 35) are in a closed state. . In this state, the upper right channel (53) communicates with the indoor upper channel (46) through the second upper right opening (33), and the indoor lower channel (47) communicates with the left lower channel (47) through the second lower left opening (36). The lower flow path (56) communicates.

 The left shirt (62) is closed and the right shirt (61) is open. In this state, the lower part of the regenerative heat exchanger (102) in the central flow path (57) communicates with the lower right flow path (54) via the right side shutter (61).

 The first air taken into the casing (10) flows into the lower left flow path (56) from the indoor lower flow path (47) through the second lower left opening (36). On the other hand, the second air taken into the casing (10) flows from the outdoor lower flow path (42) to the left flow path (52) through the first left opening (22).

 As shown in FIG. 5 (b), the first air in the lower left flow path (56) flows into the humidity control side passageway (85) of the second adsorption element (82). While flowing through the humidity control side passage (85), the water vapor contained in the first air is adsorbed by the adsorbent. The first air deprived of moisture by the second adsorption element (82) flows into the upper left flow path (55).

On the other hand, the second air in the left flow path (52) flows into the cooling-side passage (86) of the second adsorption element (82). While flowing through the cooling side passage (86), the second air absorbs the heat of adsorption generated when the water vapor of the first air is adsorbed by the adsorbent in the humidity control side passage (85). That is, the second air flows through the cooling-side passage (86) as a cooling fluid. The second air, which has lost the heat of adsorption, flows into the central channel (57) and passes through the regenerative heat exchanger (102). At that time, in the regeneration heat exchanger (102), the second air is heated by heat exchange with the refrigerant. Thereafter, the second air flows from the central channel (57) to the lower right channel (54). The second air heated by the second adsorption element (82) and the regenerative heat exchanger (102) is introduced into the humidity control passage (85) of the first adsorption element (81). In the humidity control passage (85), the adsorbent is heated by the second air, and water vapor is released from the adsorbent. That is, the regeneration of the first adsorption element (81) is performed. Then, the water vapor desorbed from the adsorbent is provided to the second air, and the second air is humidified. The second air humidified by the first adsorption element (81) then flows into the upper right channel (53).

 As shown in FIG. 4, the second air flowing into the upper right flow path (53) flows into the indoor upper flow path (46) through the second upper right opening (33). The second air passes through the first heat exchanger (103) while flowing through the indoor-side upper flow path (46). At that time, the first heat exchanger (103) is at rest and the second air is neither heated nor cooled. Then, the second air humidified by the first adsorption element (81) is supplied to the room through the indoor side outlet (14).

 On the other hand, the first air flowing into the upper left flow path (55) is sent into the outdoor upper flow path (41) through the first upper left opening (25). The first air passes through the second heat exchanger (104) while flowing through the outdoor-side upper flow path (41), and is cooled by heat exchange with the refrigerant. After that, the first air deprived of moisture and heat is discharged outside through the outdoor outlet (16).

 《Operation of refrigerant circuit》

 The operation of the refrigerant circuit (100) will be described with reference to FIGS. The flows of the first air and the second air shown in FIG. 8 are those during the second operation. In FIG. 8, the electric expansion valve (110) is omitted.

 The operation during the dehumidifying operation will be described. During the dehumidifying operation, the four-way switching valve (120) is in a state where the first port (121) and the fourth port (124) communicate with each other and the second port (122) and the third port (123) communicate with each other. Become. Further, the opening of the electric expansion valve (110) is appropriately adjusted according to the operating conditions.

 When the compressor (101) is operated in this state, the refrigerant circulates in the refrigerant circuit (100) to perform a refrigeration cycle. At that time, in the refrigerant circuit (100), the regenerative heat exchanger (102) becomes a condenser, the first heat exchanger (103) becomes an evaporator, and the second heat exchanger (104) is in a rest state ( See Figure 8 (a)).

The refrigerant discharged from the compressor (101) is sent to the regenerative heat exchanger (102). Playback The refrigerant flowing into the heat exchanger (102) exchanges heat with the second air, radiates heat to the second air and condenses. The refrigerant condensed in the regenerative heat exchanger (102) is sent to the electric expansion valve (110) through the receiver (105). This refrigerant is decompressed when passing through the electric expansion valve (110). The refrigerant decompressed by the electric expansion valve (110) is sent to the first heat exchanger (103) through the four-way switching valve (120). The refrigerant flowing into the first heat exchanger (103) exchanges heat with the first air, absorbs heat from the first air, and evaporates. No. 1 heat exchanger (10

The refrigerant evaporated in 3) is drawn into the compressor (101) and compressed, and then discharged from the compressor (101).

 The operation during the humidification operation will be described. During the humidification operation, the four-way switching valve (120) is in a state where the first port (121) and the second port (122) communicate with each other and the third port (123) and the fourth port (124) communicate with each other. Become. Further, the opening of the electric expansion valve (110) is appropriately adjusted according to the operating conditions.

 When the compressor (101) is operated in this state, the refrigerant circulates in the refrigerant circuit (100) to perform a refrigeration cycle. At that time, in the refrigerant circuit (100), the regenerative heat exchanger (102) becomes a condenser, the second heat exchanger (104) becomes an evaporator, and the first heat exchanger (103) is in a rest state ( (See Fig. 8 (b)).

 The refrigerant discharged from the compressor (101) is sent to the regenerative heat exchanger (102). The refrigerant flowing into the regenerative heat exchanger exchanges heat with the second air, radiates heat to the second air and condenses. The refrigerant condensed in the regenerative heat exchanger (102) is sent to the electric expansion valve (110) through the receiver (105). This refrigerant is decompressed when passing through the electric expansion valve (110). The refrigerant decompressed by the electric expansion valve (110) is sent to the second heat exchanger (104) through the four-way switching valve (120). The refrigerant flowing into the second heat exchanger (104) exchanges heat with the first air, absorbs heat from the first air, and evaporates. Second heat exchanger (10

The refrigerant evaporated in 4) is sucked into the compressor (101), compressed, and then discharged from the compressor (101).

As described above, the refrigerant circulating in the refrigerant circuit (100) during the humidifying operation absorbs heat from the first air in the second heat exchanger (104) and releases heat to the second air in the regenerative heat exchanger (102). That is, heat is recovered from the first air exhausted to the outside in the second heat exchanger (104), and the heat recovered in the second heat exchanger (104) is recovered in the second heat exchanger (102). 2 Air heating Used for

 One defrost operation—

 In the humidity control apparatus of the first embodiment, when the outdoor temperature is low during the humidification operation, frost may be formed on the second heat exchanger (104), which is an evaporator. It is configured to perform driving. Thus, a description will be given of a defrost operation performed when the second heat exchanger (104) is frosted.

 In this embodiment, during the humidifying operation, when the first air passes through the second heat exchanger (104) and the second heat exchanger (104) is frosted, the refrigerant circuit ( 100) to increase the evaporation temperature.

 Specifically, in this humidity control device, a variable capacity compressor (101) is used as a compressor of the refrigerant circuit (100). During the defrost operation, the compressor (101) is controlled so as to reduce the operating capacity, so that the evaporation temperature is increased. In other words, during the defrost operation, the temperature of the second heat exchanger (104), which is an evaporator, is reduced by reducing the amount of refrigerant circulating in the refrigerant circuit (100) and making use of the fact that the indoor air, which is the first air, is warm. To remove the frost from the second heat exchanger (104). At this time, the amount of heat absorbed by the refrigerant in the second heat exchanger (104) decreases, and the amount of heating of the second air in the regenerative heat exchanger (102) also decreases, but the humidification operation continues. .

 Effect of Embodiment 1

 According to the first embodiment, when the second heat exchanger (104) is frosted, for example, when the outside air temperature is low during the humidification operation, the operation for increasing the evaporation temperature by reducing the capacity of the compressor (101) is performed. The frost adhering to the second heat exchanger (104) can be removed.

 Further, by removing the frost in this manner, the evaporation ability reduced by the frost formation of the second heat exchanger (104) is restored to the original state. Therefore, a decrease in the amount of air flowing through the second heat exchanger (104) can be suppressed, and a decrease in the amount of moisture adsorbed by the adsorption elements (81, 82) due to the decrease in the amount of air can be prevented. Also does not drop. In addition, a decrease in COP can be prevented.

Further, according to this embodiment, the frost of the second heat exchanger (104) can be removed only by reducing the operation capacity of the compression mechanism (101), so that the performance can be prevented by a simple operation it can.

 Modification 1 of Embodiment 1

 (Modification 1)

 In the first embodiment, a variable capacity compressor is used as the compressor (101), and the operating capacity is reduced to increase the evaporation temperature during the defrost operation, but the variable capacity compressor (101) is used. Alternatively, the defrost operation may be performed by controlling the electric expansion valve (110). In other words, utilizing the fact that the electric expansion valve (110) having a variable opening is used as the expansion mechanism of the refrigerant circuit (100), the expansion valve (110) is opened by a predetermined amount during the defrost operation compared to the normal operation. By performing such control, an operation of increasing the evaporation temperature may be performed.

 Even in this case, when the second heat exchanger (104) is frosted, the frost can be removed by increasing the evaporation temperature. Then, by removing the frost, the performance reduced by the frost formation can be recovered, and the operation for that can be easily performed.

 [Embodiment 2]

 In the second embodiment of the present invention, a defrost operation can be performed by using a refrigerant circuit (100) having a configuration different from that of the first embodiment. This humidity control apparatus has the same configuration as that of the first embodiment except for a part of the refrigerant circuit (100). Thus, only the differences from the first embodiment will be described.

 As shown in Fig. 9, the refrigerant circuit (100) of the humidity control device supplies a high-temperature gas refrigerant from the compressor (101) to the second heat exchanger (104), which becomes an evaporator during the humidification operation. A hot gas bypass passage (130) is provided. This hot gas bypass passage (130) is connected between the discharge pipe of the compressor (101) and the second port (122) of the four-way switching valve (120) and between the second heat exchanger (104). ing.

The hot gas bypass passage (130) is provided with an electromagnetic valve (131) for opening and closing the passage (130). This solenoid valve (131) is used when the first air passes through the second heat exchanger (104) during the humidification operation, so that the second heat exchanger (104) is frosted and the differential opening operation is performed. Further, it is an on-off valve for supplying the gas refrigerant discharged from the compression mechanism (101) to the second heat exchanger (104). Also, this solenoid valve (131) is It also has the function of a pressure reducing valve for reducing the pressure.

 Other parts are configured in the same manner as in the first embodiment.

 In this humidity control device, when the second heat exchanger (104) is frosted during the humidification operation and the defrost operation is performed, the electric expansion valve (110) is fully closed and the hot gas bypass passage (130) is closed. By opening the solenoid valve (131), the refrigerant discharged from the compressor (101) is supplied to the evaporators (103, 104). As a result, the temperature of the second heat exchanger (104) rises, and attached frost is removed. At this time, the fan (not shown) of the second heat exchanger (104) is stopped, and the refrigerant is sucked into the compressor (101) without condensing, and is discharged again from the compressor (101). Circulates in the refrigerant circuit (100). The humidification operation is stopped during the differential opening operation.

 As described above, in the second embodiment, the hot gas bypass passage (130) is provided to supply the high-temperature discharge gas refrigerant from the compressor (101) to the second heat exchanger (104). Defrosting can be performed quickly and reliably.

 Modification 1 of Embodiment 2

 FIG. 10 shows a modification of the second embodiment.

 In the refrigerant circuit (100) of the humidity control apparatus, the first heat exchanger (103) and the second heat exchanger (102) are not provided with the four-way switching valve (120) in the refrigerant circuit of FIG. 2 Connect the heat exchanger (104) in parallel, and install the first electric expansion valve (111) upstream of the first heat exchanger (103) and the second motor-operated expansion valve (111) upstream of the second heat exchanger (104). The configuration is such that an electric expansion valve (112) is provided.

 Further, the hot gas bypass passage (130) is connected to the discharge side of the compressor (101), and to the portion between the second electrically-operated expansion valve (112) and the second heat exchanger (104). The first heat exchanger (103) and the second heat exchanger (104) are connected in parallel to the compressor (101), and a solenoid valve (150) is provided on the first heat exchanger (103) side. Is provided.

 In this configuration, during the dehumidifying operation, the first electric expansion valve (111) and the solenoid valve (150) are opened, the second electric expansion valve (112) and the solenoid valve (131) are closed, and the refrigerant is compressed by the compressor (1). 01), the regenerative heat exchanger (102), the first electric expansion valve (111), and the first heat exchanger (103) are flowed in this order to perform a refrigeration cycle.

During the humidification operation, the second electric expansion valve (112) is opened, and the first electric expansion valve (11 1), Close the solenoid valve (131) and the solenoid valve (150) to transfer the refrigerant to the compressor (101), the regenerative heat exchanger (102), the second electric expansion valve (112), and the second heat exchanger (104). Pour in order and freeze frozen.

 On the other hand, when the second heat exchanger (104) defrosts during the humidification operation and performs the defrost operation, the first electric expansion valve (111), the second electric expansion valve (112), and the solenoid valve (150) By closing the solenoid valve and opening the solenoid valve (131), the gas discharged from the compressor (101) is supplied to the second heat exchanger (104). This makes it possible to quickly and reliably remove the frost from the second compressor (104), as in the example of FIG.

 [Embodiment 3]

 The third embodiment of the present invention is directed to a condenser in the first heat exchanger (103) and the second heat exchanger (104) during the humidification operation by circulating the refrigerant in a reverse cycle in the refrigerant circuit (100). The functions of the evaporator and the evaporator are switched so that defrost operation can be performed.

 As shown in FIG. 11, the refrigerant circuit (100) according to the third embodiment includes a second four-way switching valve (140) for switching the refrigerant circulation direction and an electromagnetic valve (150) as shown in FIG. ).

 The second four-way switching valve (140) has a first port (141) connected to the discharge side of the compressor (101), and a second port (142) connected to one end of the regenerative heat exchanger (102). I have. The third port (143) of the second four-way switching valve (140) is connected to the suction side of the compressor (101), and the fourth port (144) is connected to the first heat exchanger (102) and the fourth port (144). Two heat exchangers (103) are connected in parallel, and the solenoid valve (150) is provided on the first heat exchanger (102) side of this pipe.

 Except for these points, the refrigerant circuit (100) of this device has the same configuration as that of the first embodiment.

During the normal humidifying operation and the dehumidifying operation, the second four-way switching valve (140) communicates with the first port (141) and the second port (142), and the third port (143) and the fourth port. (1 44) is set to be in communication state. In this state, the refrigerant discharged from the compressor (102) flows to the regenerative heat exchanger (102), and the refrigerant from the first heat exchanger (103) or the second heat exchanger (104) is cooled by the compressor ( 101). As a result, the air on the regeneration side is regenerated. Heated by the heat exchanger (102), the air on the adsorption side is cooled by the first heat exchanger (103) or the second heat exchanger (104).

 On the other hand, in this humidity control apparatus, when the second heat exchanger (104) is defrosted during the humidification operation and the defrost operation is performed, the second four-way switching valve (140) is switched to the first port (141). And the fourth port (144) communicate with the second port (142) and the third port (143), the solenoid valve (150) is closed, and the first heat exchange Setting that does not flow to the heat exchanger. As a result, the refrigerant circulates through the refrigerant circuit (100) in a reverse cycle in the order of the compressor (101), the second heat exchanger (104), the electric expansion valve (110), and the regenerative heat exchanger (102). Then, the second heat exchanger (104), which had been used as an evaporator during the humidification operation, becomes a condenser. Therefore, the second heat exchanger (104) is heated and its frost is removed. After the completion of the defrosting of the second heat exchanger (104), the circulation direction of the refrigerant is returned to the normal cycle, and the operation of heating the second air, humidifying it, and supplying it to the room is restarted.

 As described above, in the present embodiment, the high-temperature refrigerant is supplied to the second heat exchanger (104) by setting the circulation direction of the refrigerant to the reverse cycle during the defrost operation, so that defrosting can be performed quickly and reliably. Can be.

 Modification 1 of Embodiment 3

 FIG. 12 shows a modification of the third embodiment.

 The refrigerant circuit (100) of the humidity control apparatus is different from the refrigerant circuit of FIG. 11 in that the first heat exchanger (103) and the first heat exchanger (103) A second heat exchanger (104) is connected in parallel, a first electric expansion valve (111) is provided upstream of the first heat exchanger (103), and a first motor-operated expansion valve (111) is provided upstream of the second heat exchanger (104). (2) The configuration is provided with an electric expansion valve (112). Then, the first heat exchanger (103) and the second heat exchanger (104) are connected in parallel to the fourth port (144) of the second four-way switching valve (140).

Also in this configuration, during normal humidification operation and dehumidification operation, the first port (141) communicates with the second port (142), and the third port (143) communicates with the fourth port (144). Set to state. In this state, the refrigerant discharged from the compressor (102) flows to the regenerative heat exchanger (102), and the refrigerant from the first heat exchanger (103) or the second heat exchanger (104) is supplied to the compressor ( 101). As a result, the air on the regeneration side is Heated in (102), the air on the adsorption side is cooled in the first heat exchanger (103) or the second heat exchanger (104). During the humidification operation, the first electric expansion valve (111) is closed, and the second electric expansion valve (112) is controlled to a predetermined opening.

 On the other hand, in this humidity control device, when the second heat exchanger (104) is defrosted during the humidification operation and the defrost operation is performed, the second four-way switching valve (140) is switched to connect the first port (141) to the first port (141). A state is set in which the fourth port (144) communicates and the second port (142) communicates with the third port (143). As a result, the refrigerant flows through the refrigerant circuit (100) in the reverse cycle of the compressor (101), the second heat exchanger (104), the second electric expansion valve (112), and the regenerative heat exchanger (102). The second heat exchanger (104) that had been used as an evaporator during the humidification operation becomes a condenser. Therefore, the second heat exchanger (104) is heated and its frost is removed. After the completion of the defrosting of the second heat exchanger (104), the circulation direction of the refrigerant is returned to the normal cycle, and the operation of heating the second air, humidifying it, and supplying it to the room is resumed.

 Therefore, even if the refrigerant circuit (100) is configured in this manner, the high-temperature refrigerant can be supplied to the second heat exchanger (104) by setting the circulation direction of the refrigerant to the reverse cycle during the defrost operation. Therefore, defrosting can be performed quickly and reliably.

 [Embodiment 4]

 The device configuration of the fourth embodiment of the present invention is the same as the humidity control device of the first embodiment, including the refrigerant circuit, except that only the operation control is different.

 Specifically, in the first embodiment, when performing the defrost operation for defrosting the second heat exchanger (104) during the humidification operation, the refrigerant is circulated by reducing the operation capacity of the compressor (101). In the fourth embodiment, as shown in FIG. 13, during defrost operation, the compressor (101) is stopped and the first air (room air) is supplied to the second heat exchanger (104). ). In this case, only the indoor air is blown to the first heat exchanger, and the refrigerant does not flow. The humidification operation also stops.

Here, as described in the first embodiment, during the humidification operation, the second air (outdoor air) is heated by the regenerative heat exchanger (102), then humidified by the adsorption elements (81, 82) and supplied to the room. The first air (room air) exchanges heat with the refrigerant in the second heat exchanger (104), which is an evaporator, and is discharged outside the room. In other words, during humidification operation, it is an evaporator Relatively high temperature room air flows through the second heat exchanger (104). Therefore, at this time, the function of the evaporator in the second heat exchanger (104) is stopped by stopping the compression mechanism (101), and if only the blowing of the indoor air is performed in that state, the indoor air has a relatively high temperature. Therefore, the evaporator (104) can be defrosted.

 In contrast, in the case of an air conditioner for a general vapor compression refrigeration cycle, low-temperature outdoor air flows through the outdoor heat exchanger, which is the evaporator during heating, so the compressor is stopped and air is blown. However, in the case of the humidity control apparatus using the adsorbing elements (81, 82) and the refrigerant circuit (100) as in the fourth embodiment, the second heat exchanger is used during the humidification operation. By utilizing the fact that room air can flow in (104), defrosting can be performed only by stopping the compression mechanism (101). In other words, the defrost operation can be performed with an extremely simple operation.

 [Embodiment 5]

 Embodiment 5 of the present invention is an example in which the flow of the refrigerant during the defrost operation is changed in the humidity control apparatus of Embodiment 1.

 As described above, the refrigerant circuit (100) of the humidity control device includes, as described above, a regenerative heat exchanger (102) for exchanging heat with the refrigerant for heating the second air supplied to the adsorption element (81, 82); The first heat exchanger (103) cools the air supplied to the room during the dehumidification operation by exchanging heat with the refrigerant, and the second heat exchanger cools the air discharged outside the room during the humidification operation by heat exchange with the refrigerant. A heat exchanger (104).

 When the second heat exchanger (104) defrosts during the humidifying operation and performs the defrost operation, the refrigerant circuit (100) turns the regenerative heat exchanger (102) into a condenser, and performs the first heat exchange. The second heat exchanger (104) is configured to be defrosted by using the evaporator (103) as an evaporator and stopping the second heat exchanger (104). In other words, the four-way switching valve (120) is switched to set the refrigerant to circulate in the direction shown in FIG. 14, thereby performing the differential opening operation.

During this defrost operation, the air heated in the regenerative heat exchanger (102) passes through the first heat exchanger (103) after being humidified by the adsorbing elements (81, 82), and is cooled slightly during that time. It is supplied indoors. In addition, since the supply of the refrigerant to the second heat exchanger (104) that has frosted during the humidification operation is temporarily stopped, the temperature of the second heat exchanger (104) rises, and the frost is removed. Left. At this time, by blowing the indoor air to the second heat exchanger (104), defrosting can be ensured.

 In addition, while the second heat exchanger (104) is used as an evaporator for about 80% of the humidifying operation time, the remaining about 20% is stopped to reduce the blowout temperature due to defrost during the humidifying operation. While depressing, the second heat exchanger (104) can be defrosted. In this way, by temporarily operating the first heat exchanger (103) as an evaporator and not using the second heat exchanger (104) during the humidification operation, the second heat exchange is performed while humidification is continued. The frost on the vessel (104) can be prevented.

 [Embodiment 6]

 Embodiment 6 of the present invention is an example in which the second heat exchanger is a condenser during the defrost operation in the humidity control apparatus of Embodiment 1. That is, in this embodiment, during the humidifying operation, when the first air passes through the second heat exchanger (104) and the second heat exchanger (104) is frosted, the regenerative heat exchanger is used during the defrost operation. (102) and the second heat exchanger (104) were used as condensers, and the first heat exchanger (103) was used as an evaporator.

 In this humidity control apparatus, during the defrost operation in which the second heat exchanger (104) is frosted, for example, as shown in FIG. 15, air heated in the regenerative heat exchanger (102) is adsorbed by the adsorption element (8). After being humidified in (1, 82), the second heat exchanger (104) is temporarily used as a condenser while being slightly cooled in the first heat exchanger (103) and supplied to the room. Increase the temperature of the exchanger (104) to remove frost. For example, while the second heat exchanger (104) is used as an evaporator for about 80% of the time during humidifying operation, the remaining about 20% of the time is used as a condenser, so that it can be used during humidifying operation. The second heat exchanger (104) can be defrosted. In this embodiment, the description of the specific configuration of the refrigerant circuit (100) is omitted, but the circuit may be configured by appropriately combining an electromagnetic valve, a check valve, a flow path switching valve, and the like. .

 In the sixth embodiment, only air is blown to the second heat exchanger (104) in the fifth embodiment, whereas the second heat exchanger (104) is used as a condenser. (2) Defrosting of the heat exchanger (104) can be performed quickly and reliably.

[Other embodiments] The present invention may be configured as follows in the above embodiment.

 For example, in the above embodiment, the humidity control apparatus capable of performing both the dehumidification operation and the humidification operation has been described. However, in the first to fourth embodiments, an apparatus that performs only the humidification operation may be used.

 In each of the above embodiments, the adsorption element (81, 82) is used in which the second air before heating in the regenerative heat exchanger (102) is used as a cooling fluid for recovering the heat of adsorption of the first air. Although an example has been described, the present invention is also applicable to an apparatus using an adsorption element (81, 82) that performs only adsorption and regeneration without flowing a cooling fluid.

 In the first, fifth, and sixth embodiments, for example, the defrost is performed while the humidification is continued by performing the batch operation, but the batch operation is temporarily stopped during the defrost operation. It is also possible to operate as a ventilation device. In other words, only the ventilation may be performed while performing the defrosting operation of the evaporator and not performing the humidity control of the air by the adsorption element (81, 82). Industrial applicability

 As described above, the present invention is useful for a humidity control device.

Claims

The scope of the claims 1. An adsorbent element (81, 82) having an adsorbent and bringing the adsorbent into contact with air, and a refrigerant circuit (100) for circulating a refrigerant to perform a refrigeration cycle,  An adsorbing operation for adsorbing the water in the first air to the adsorbent of the adsorbing element (81, 82); and adsorbing the adsorbing element (81, 82) with the second air heated by the refrigerant in the refrigerant circuit (100). A humidifying device configured to perform a regeneration operation for regeneration and supply the second air to the room and discharge the first air, and  The refrigerant circuit (100) is configured to defrost the evaporator (104) by increasing the evaporation temperature of the refrigerant when the evaporator (104) of the refrigerant circuit (100) is frosted. A humidity control device, characterized in that: 2. In the refrigerant circuit (100), the compression mechanism is composed of a variable capacity compressor (101), and when the evaporator (104) is frosted, the operating capacity of the compressor (101) is controlled to increase the evaporation temperature. 2. The humidity control apparatus according to claim 1, wherein the humidity control apparatus is configured to perform the control. 3. In the refrigerant circuit (100), the expansion mechanism is constituted by an expansion valve (110) with a variable opening, and when the evaporator (104) is frosted, the opening of the expansion valve (110) is controlled to evaporate. 2. The humidity control device according to claim 1, wherein the humidity control device is configured to raise the pressure. 4. An adsorbent element (81, 82) having an adsorbent and bringing the adsorbent into contact with air, and a refrigerant circuit (100) for circulating a refrigerant to perform a refrigeration cycle,  An adsorbing operation for adsorbing the water in the first air to the adsorbent of the adsorbing element (81, 82); and adsorbing the adsorbing element (81, 82) with the second air heated by the refrigerant in the refrigerant circuit (100). A humidifying device configured to perform a regeneration operation for regeneration and supply the second air to the room and discharge the first air, and  The refrigerant circuit (100) includes a hot gas bypass passage (130) that can supply gas refrigerant from the compression mechanism (101) to the evaporator (104). During the frost formation of the evaporator (104), the gas refrigerant discharged from the compression mechanism (101) is converted into hot gas. A humidity control apparatus characterized in that the evaporator (104) is defrosted by being supplied to the evaporator (104) through a bypass passage (130). 5. An adsorbent element (81, 82) having an adsorbent for bringing the adsorbent into contact with air, and a refrigerant circuit (100) for circulating a refrigerant to perform a refrigeration cycle,  An adsorbing operation for adsorbing the water in the first air to the adsorbent of the adsorbing element (81, 82); and adsorbing the adsorbing element (81, 82) with the second air heated by the refrigerant in the refrigerant circuit (100). A humidifying device configured to perform a regeneration operation for regeneration and supply the second air to the room and discharge the first air, and  The refrigerant circuit (100) is configured so that the circulation direction of the refrigerant is reversible, and performs defrosting of the evaporator (104) by circulating the refrigerant in a reverse cycle when the evaporator (104) is frosted. A humidity control device characterized by being configured as described above. 6. An adsorbent element (81, 82) having an adsorbent and bringing the adsorbent into contact with air, and a refrigerant circuit (100) for circulating a refrigerant and performing a refrigeration cycle,  An adsorbing operation of adsorbing moisture in the first air to the adsorbent of the adsorbing element (81, 82); and adsorbing the adsorbing element (81, 82) with the second air heated by the refrigerant in the refrigerant circuit (100). A humidifying device configured to perform a regeneration operation for regeneration and supply the second air to the room and discharge the first air, and  The refrigerant circuit (100) defrosts the evaporator (104) by stopping the compression mechanism (101) and blowing the first air to the evaporator (104) when the evaporator (104) is frosted. A humidity control device characterized in that it is configured to perform the same. 7. An adsorbent element (81, 82) having an adsorbent and bringing the adsorbent into contact with air, and a refrigerant circuit (100) for circulating a refrigerant and performing a refrigeration cycle, An adsorbing operation for adsorbing the water in the first air to the adsorbent of the adsorbing element (81, 82); and adsorbing the adsorbing element (81, 82) with the second air heated by the refrigerant in the refrigerant circuit (100). A dehumidification operation that supplies the first air to the room and discharges the second air and a humidification operation that supplies the second air to the room and discharges the first air. A humidity control device,  The refrigerant circuit (100) includes a regenerative heat exchanger (102) for exchanging the second air supplied to the adsorption element (81, 82) with a refrigerant to heat the refrigerant, and an air supplied to the room during the dehumidifying operation. A first heat exchanger (103) for exchanging heat with the refrigerant for cooling, and a second heat exchanger (104) for exchanging the air discharged during the humidifying operation with the refrigerant for cooling.  When the second heat exchanger (104) is frosted, the regenerative heat exchanger (102) is used as a condenser, the first heat exchanger (103) is used as an evaporator, and the second heat exchanger (104) is stopped. The second heat exchanger (104) is thereby defrosted. 8. An adsorbent element (81, 82) having an adsorbent for bringing the adsorbent into contact with air, and a refrigerant circuit (100) for circulating a refrigerant to perform a refrigeration cycle,  An adsorbing operation for adsorbing the water in the first air to the adsorbent of the adsorbing element (81, 82); and adsorbing the adsorbing element (81, 82) with the second air heated by the refrigerant in the refrigerant circuit (100). A dehumidifying operation of supplying the first air to the room and discharging the second air, and a humidifying operation of supplying the second air to the room and discharging the first air. Humidity control device,  The refrigerant circuit (100) includes a regenerative heat exchanger (102) that heats the second air supplied to the adsorption element (81, 82) by exchanging heat with a refrigerant, and air supplied to the room during the dehumidifying operation. A first heat exchanger (103) for exchanging heat with the refrigerant for cooling, and a second heat exchanger (104) for exchanging the air discharged during the humidifying operation with the refrigerant for cooling.  When the second heat exchanger (104) is frosted, the regenerative heat exchanger (102) and the second heat exchanger (104) are used as condensers, and the first heat exchanger (103) is used as an evaporator. And a second heat exchanger (104) for performing defrosting. 9. It has a first adsorption element (81) and a second adsorption element (82), The first operation in which the first adsorption device (81) performs the adsorption operation and the second adsorption device (82) performs the regeneration operation, and the second adsorption device (82) performs the adsorption operation and the first adsorption device (81) Alternately with the second operation, which performs the regeneration operation in The humidity control apparatus according to any one of claims 1 to 8, wherein the humidity control apparatus is configured to be supplied into the inside. 10. The adsorption element (81, 82) includes a humidity control side passage (85) through which the first air or the second air flows alternately and alternately, and a cooling side passage (86) through which a cooling fluid flows. The adsorbing element (81) is configured to exchange heat between the first air and the cooling fluid, and to recover the heat of adsorption of the first air in the adsorbing element (81, 82) with the cooling fluid. 10. The humidity control device according to claim 9, wherein: