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A humidity control apparatus has a refrigerant circuit 20 that has a compressor 21 and a first adsorption heat exchanger 23 and a second adsorption heat exchanger 25, each of which has an adsorbent for adsorbing the moisture of air supported thereon, and that reversibly circulates refrigerant to per

A humidity control apparatus has a refrigerant circuit 20 that has a compressor 21 and a first adsorption heat exchanger 23 and a second adsorption heat exchanger 25, each of which has an adsorbent for adsorbing the moisture of air supported thereon, and that reversibly circulates refrigerant to perform a vapor compression refrigeration cycle. The refrigerant circuit 20 is provided with a sensible heat exchanger 26 in which the refrigerant after having passed through the adsorption heat exchanger 23, 25 functioning as an evaporator exchanges heat with the air having passed through the adsorption heat exchanger 23, 25 functioning as a condenser, thereby cooling the air.

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1. A humidity control apparatus that comprises a refrigerant circuit including a compressor, and a first adsorption heat exchanger and a second adsorption heat exchanger, each of which has an adsorbent for adsorbing moisture of air supported thereon, and circulating refrigerant to perform a vapor co

1. A humidity control apparatus that comprises a refrigerant circuit including a compressor, and a first adsorption heat exchanger and a second adsorption heat exchanger, each of which has an adsorbent for adsorbing moisture of air supported thereon, and circulating refrigerant to perform a vapor compression refrigerant cycle, wherein the refrigerant circuit further includes a four-way switching valve configured to switch between a first operation and a second operation, where in the first operation, refrigerant discharged from the compressor condenses in the first adsorption heat exchanger and refrigerant evaporated in the second adsorption heat exchanger is sucked into the compressor, and in the second operation, the refrigerant discharged from the compressor condenses in the second adsorption heat exchanger and refrigerant evaporated in the first adsorption heat exchanger is sucked into the compressor, anda sensible heat exchanger, where in the first operation, the sensible heat exchanger is located downstream of the second adsorption heat exchanger to be supplied with gas single phase refrigerant flowing out of the second adsorption heat exchanger, whereas in the second operation, the sensible heat exchanger is located downstream of the first adsorption heat exchanger to be supplied with gas single phase refrigerant flowing out of the first adsorption heat exchanger, andthe refrigerant circuit is configured to perform cooling and humidifying operation in which the first operation and the second operation are alternately repeated such that in the first operation, air humidified in the first adsorption heat exchanger and then cooled in the sensible heat exchanger is supplied into a room, and in the second operation, air humidified in the second adsorption heat exchanger and then cooled in the sensible heat exchanger is supplied into the room. 2. The humidity control apparatus of claim 1, wherein the refrigerant circuit is constructed such that a cooling temperature of the air by the sensible heat exchanger becomes a dew point temperature of the air or higher. 3. The humidity control apparatus of claim 1 or claim 2, wherein the refrigerant circuit includes a passage switching member for switching a refrigerant passage between a state where the sensible heat exchanger is located downstream of the second adsorption heat exchanger in the first operation and the sensible heat exchanger is located downstream of the first adsorption heat exchanger in the second operation and a state where the sensible heat exchanger is located upstream of the first adsorption heat exchanger in the first operation and the sensible heat exchanger is located upstream of the second adsorption heat exchanger in the second operation. 4. The humidity control apparatus of claim 1, wherein a cooling and humidifying operation is performed in which air cooled in the sensible heat exchanger after being humidified in the adsorption heat exchanger in which a regeneration operation of the adsorbent is performed is supplied to the room. 5. A humidity control apparatus that comprises a refrigerant circuit including a compressor, and a first adsorption heat exchanger and a second adsorption heat exchanger, each of which has an adsorbent for adsorbing moisture of air supported thereon, and circulating refrigerant to perform a vapor compression refrigerant cycle, wherein the refrigerant circuit further includes a four-way switching valve configured to switch between a first operation and a second operation, where in the first operation, refrigerant discharged from the compressor condenses in the first adsorption heat exchanger and refrigerant evaporated in the second adsorption heat exchanger is sucked into the compressor, and in the second operation, the refrigerant discharged from the compressor condenses in the second adsorption heat exchanger and refrigerant evaporated in the first adsorption heat exchanger is sucked into the compressor, anda sensible heat exchanger, where in the first operation, the sensible heat exchanger is located downstream of the second adsorption heat exchanger to be supplied with gas single phase refrigerant flowing out of the second adsorption heat exchanger, whereas in the second operation, the sensible heat exchanger is located downstream of the first adsorption heat exchanger to be supplied with gas single phase refrigerant flowing out of the first adsorption heat exchanger,the refrigerant circuit is configured to perform cooling and humidifying operation in which the first operation and the second operation are alternately repeated such that in the first operation, air humidified in the first adsorption heat exchanger and then cooled in the sensible heat exchanger is supplied into a room, and in the second operation, air humidified in the second adsorption heat exchanger and then cooled in the sensible heat exchanger is supplied into the room, andheat exchangers provided in the refrigerant circuit to exchange heat between the refrigerant and the air are only the single first adsorption heat exchanger, the single second adsorption heat exchanger, and the single sensible heat exchanger.