REFRIGERATION CYCLE DEVICE - MITSUBISHI ELECTRIC CORP

Title:

REFRIGERATION CYCLE DEVICE

Document Type and Number:

WIPO Patent Application WO/2019/030885

Kind Code:

A1

Abstract:

When leakage of a refrigerant is detected, a refrigerant recovery operation is performed of operating a compressor (210) in the state where an outdoor expansion valve (206) is closed such that a refrigerant suctioned from indoor units (40a, 40b) is liquefied by passing through an outdoor heat exchanger (203), and is stored in an outdoor unit (40). When a low-pressure detection value (P1) obtained by a pressure sensor (210) falls below a reference value, an ending condition for the refrigerant recovery operation is established to stop the compressor (201). Furthermore, when an abnormality in the refrigerant recovery operation is detected on the basis of the behavior of the low-pressure detection value (P1) obtained until the ending condition is established, the refrigerant recovery operation is ended by stoppage of the compressor (201), and guidance information for reporting the abnormality is outputted to a user.

Inventors:

WADA MAKOTO (JP)
MATSUDA TAKUYA (JP)
ISHIMURA KATSUHIRO (JP)

Application Number:

PCT/JP2017/029048

Publication Date:

February 14, 2019

Filing Date:

August 10, 2017

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

F25B49/02; F25B1/00

Domestic Patent References:

WO2013038704A1	2013-03-21
WO2016157519A1	2016-10-06

Foreign References:

JPS59100375A	1984-06-09
JP2000161798A	2000-06-16
JP2009222272A	2009-10-01
JP2007178026A	2007-07-12
JP6081033B1	2017-02-15
JPS6277769U	1987-05-18
JP2005140360A	2005-06-02
JP2015197279A	2015-11-09
JP2002228281A	2002-08-14
JP2016011783A	2016-01-21
JP2013122364A	2013-06-20
JP2004286315A	2004-10-14

Other References: