|Numéro de publication||2022/162819|
|Statut||Délivré - en vigueur|
|Date de dépôt||2021-01-28|
|Date de publication||2022-08-04|
|Propriétaire||HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japon)|
Abrégé[Problem] To provide an air-conditioning device that achieves both increased reliability of a compressor and improved heating performance at the startup of heating operation. [Solution] A refrigeration cycle comprising an indoor unit 200 and an outdoor unit 100, wherein the outdoor unit 100 has: a refrigeration cycle that includes an expansion valve 110, a heat exchanger 114 and a compressor 108; and a control device 102 that controls the operation of the refrigeration cycle. The outdoor unit 100 is equipped with a pressure sensor 104 that measures the pressure of refrigerant flowing between the heat exchanger 114 and the compressor 108, and a temperature sensor 106 that measures the temperature of the refrigerant. When the refrigeration cycle starts heating operation, the control device 102 controls the opening of the expansion valve 110 on the basis of the degree of superheat of the refrigerant sucked into the compressor 108.