REFRIGERATION CYCLE DEVICE

WIPO Patent Application WO/2022/075007

A1

The refrigeration cycle device comprises: a compressor (11) which suctions in a refrigerant, compresses the refrigerant, and discharges the refrigerant; a heat dissipating part (12, 20, 22) which exchanges heat between the refrigerant discharged from the compressor and air blown to an air conditioning space to dissipate heat in the air; a first decompression unit (13) which decompresses the refrigerant and closes a flow path of the refrigerant; a first evaporation unit (14) which exchanges heat between the refrigerant decompressed by the first decompression unit and the air to absorb heat from the air to thereby evaporate the refrigerant; a second decompression unit (16) which is disposed in parallel to the first decompression unit in the flow of the refrigerant, and which decompresses the refrigerant; a second evaporation unit (17) which causes the refrigerant decompressed by the second decompression unit to absorb heat to thereby evaporate the refrigerant; and a control unit (60) which executes oil collection control to control the first decompression unit so as to open the flow path when it is determined that the first decompression unit has closed the flow path and refrigerator oil mixed into the refrigerant has stagnated in the first evaporation unit.

OKAMURA TORU (JP)
MIURA KOJI (JP)
KAWANO HIROAKI (JP)
MAKIMOTO NAOYA (JP)
KATOH YOSHIKI (JP)

PCT/JP2021/033463

April 14, 2022

September 13, 2021

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DENSO CORP (JP)

F25B5/02; B60H1/22; F25B1/00; F25B41/20

JP2015183872A	2015-10-22
JPH04344074A	1992-11-30

KAI-SEI PATENT FIRM (JP)

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