Patent ID: 8915451
Filing Date: 2014-12-23
Classification: F24F

Abstract:
1. A humidity adjustment device, including: a refrigerant circuit which includes a compressor, a first heat exchanger carrying an adsorbent, a second heat exchanger carrying an adsorbent, an electronic expansion valve, and a four-way switching valve; an air circulation switching device that switches air to be circulated through the first heat exchanger and air to be circulated through the second heat exchanger; and a control device controlling operations of the compressor, the electronic expansion valve, the four-way switching valve and the air circulation switching device, wherein the control device controls the operation of the four-way switching valve such that one of the first heat exchanger and the second heat exchanger is defined as a condenser to function as a humidifier by a regeneration action of the adsorbent, while the other heat exchanger is defined as an evaporator to function as a dehumidifier by an adsorption action of the adsorbent, and the functions of both the heat exchangers are switched by changing a refrigerant flow inside the refrigerant circuit, wherein the control device compares an outside air temperature and a room air temperature to determine which of the air temperatures is higher, and at the time of startup of the humidity adjustment device, the control device controls the operation of the air circulation switching device such that one of the outside air and the room air which is at a higher temperature is circulated through the heat exchanger acting as the evaporator, of the first heat exchanger and the second heat exchanger, while the air at a lower temperature is circulated through the heat exchanger acting as the condenser, of the first heat exchanger and the second heat exchanger.