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Title:
REFRIGERATION CYCLE DEVICE AND VEHICLE AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/241433
Kind Code:
A1
Abstract:
In a refrigeration cycle device, a first decompression part (54) and a first evaporator (23) are connected in parallel with a second decompression part (55) and a second evaporator (33), thus allowing a first-blower only operation in which a first blower sends air to the first evaporator, and a second blower does not send air to the second evaporator. A control unit performs oil return control to control the operation of a compressor so as to change a low pressure at a suction side of the compressor, when the operating time of the compressor during the first-blower only operation reaches a predetermined time. The control unit changes the predetermined time on the basis of the number of revolutions of the compressor during the first-blower only operation.

Inventors:
ABEI JYUN (JP)
WAKISAKA TAKESHI (JP)
HAYASHI KENJI (JP)
ASANO SOICHIRO (JP)
Application Number:
PCT/JP2020/020048
Publication Date:
December 03, 2020
Filing Date:
May 21, 2020
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
F25B5/02; B60H1/32; F25B1/00
Foreign References:
JP2008261603A2008-10-30
JP2001138734A2001-05-22
Attorney, Agent or Firm:
KAI-SEI PATENT FIRM (JP)
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