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 29.12.2021
Subjects
AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING
BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
RANGES
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
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