AIR CONDITIONING DEVICE

An air conditioning device (1000) has: a refrigerant circuit (100) that is formed of a compressor (1), a switching valve (2), a cascade heat exchanger (3), an expansion valve (4) and an outdoor heat exchanger (5) connected to one another by a first pipe (21) through which a refrigerant flows, and ca...

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Bibliographic Details
Main Authors YANACHI, Satoru, KATO, Naoki, NOMOTO, So, TSUKIYAMA, Ryo, MATSUDA, Takuya
Format Patent
LanguageEnglish
French
German
Published 27.10.2021
Subjects
AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
RANGES
VENTILATING
WEAPONS
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Summary:An air conditioning device (1000) has: a refrigerant circuit (100) that is formed of a compressor (1), a switching valve (2), a cascade heat exchanger (3), an expansion valve (4) and an outdoor heat exchanger (5) connected to one another by a first pipe (21) through which a refrigerant flows, and capable of performing a defrosting operation in which the refrigerant discharged from the compressor (1) is introduced into the outdoor heat exchanger (5); a heat-transfer medium circuit (200) that is formed of a pump (12), the cascade heat exchanger (3), and the indoor heat exchanger (11) connected to one another by a second pipe (23) through which a heat-transfer medium flows; and a control device (31) that controls the compressor (1) and the pump (12). When an amount of heat storage of the heat-transfer medium is less than a threshold, the control device (31) reduces the heating capability of the indoor heat exchanger (11) when the air conditioning device (1000) transitions from a heating operation to the defrosting operation.
Bibliography:Application Number: EP20180944079