Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/202555
Kind Code:
A1
Abstract:
A refrigerant circuit (80) includes a compressor (1), a higher-voltage-side heat exchanger (2), a decompression device (3), and a lower-voltage-side heat exchanger (4), which are connected by means of a refrigerant pipe (81) so as to form a loop, and is configured so as to circulate a refrigerant therethrough. The refrigerant circuit (80) is configured so as to perform oil-recovery operation on the basis of the operation history of the compressor (1) during normal operation of the refrigerant circuit (80) and the amount of oil inside the compressor (1) detected by an oil depletion detecting sensor (6).
Inventors:
ISHIYAMA HIROKI (JP)
SHIMAZU YUSUKE (JP)
SHIMAZU YUSUKE (JP)
Application Number:
PCT/JP2019/015152
Publication Date:
October 08, 2020
Filing Date:
April 05, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Foreign References:
| JP2003106690A | 2003-04-09 | |||
| JP2016194389A | 2016-11-17 | |||
| CN104913556A | 2015-09-16 | |||
| JP2018173194A | 2018-11-08 | |||
| JP2016194389A | 2016-11-17 |
Other References:
See also references of EP 3951283A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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