REFRIGERATION CYCLE DEVICE - MITSUBISHI ELECTRIC CORP

Title:

REFRIGERATION CYCLE DEVICE

Document Type and Number:

WIPO Patent Application WO/2019/111342

Kind Code:

A1

Abstract:

A refrigeration cycle device comprising: a refrigerant circuit (30) in which a refrigerant circulates through a compressor (1), an oil separator (2), a first heat exchanger (3), a decompressor (4), and a second heat exchanger (5) in the stated order and then returns to the compressor (1); an oil accumulation part (6) that retains refrigerator oil; first piping (21) that connects the oil separator (2) and the oil accumulation part (6), the first piping (21) sending the refrigerator oil separated by the oil separator (2) to the oil accumulation part (6); a first valve (11) provided to the first piping (21); second piping (22) that connects the oil accumulation part (6) and an intake side of the compressor (1); a second valve (12) provided to the second piping (22); third piping (23) that connects the oil accumulation part (6) and the intake side of the compressor (1) at a position lower than the position at which the second piping (22) is connected to the oil accumulation part (6); and a third valve (13) provided to the third piping (23). In a period during which the compressor (1) is stopped, the first to third valves (11 to 13) are closed.

Inventors:

ISHIYAMA HIROKI (JP)

Application Number:

PCT/JP2017/043754

Publication Date:

June 13, 2019

Filing Date:

December 06, 2017

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F25B1/00

Domestic Patent References:

WO2016121184A1

2016-08-04

Foreign References:

JP2016118317A	2016-06-30
JP2015038406A	2015-02-26
JP2014020613A	2014-02-03
KR20140018525A	2014-02-13
CN106288556A	2017-01-04
CN106091494A	2016-11-09
JP2008139001A	2008-06-19

Other References: