Title:
REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/073870
Kind Code:
A1
Abstract:
A liquid-side pipe (47) of an outdoor circuit (40) is provided with an outdoor expansion valve (44). Furthermore, the outdoor circuit (40) is provided with a liquid-side bypass pipe (50) for having the liquid-side pipe (47) in communication with the intake side of a compressor (41). When an outdoor controller (80) receives a signal indicating that a refrigerant has leaked from an indoor circuit (60), the outdoor controller performs refrigerant recovery control operations for operating the compressor (41) in a state wherein the liquid-side control valve (44) is closed, and also performs, in the refrigerant recovery control operations, valve control operations for opening a liquid-side bypass valve (51) of the liquid-side bypass pipe (50). As a result, the refrigerant can be recovered from a use-side circuit to a heat source-side circuit, while preventing the compressor from being damaged, and the leakage amount of the refrigerant from the use-side circuit can be reduced.
More Like This:
| WO/2023/190228 | HEAT PUMP DEVICE |
| WO/2019/035205 | AIR CONDITIONING DEVICE |
Inventors:
YAJIMA RYUZABURO (JP)
Application Number:
PCT/JP2018/036998
Publication Date:
April 18, 2019
Filing Date:
October 03, 2018
Export Citation:
Assignee:
DAIKIN IND LTD (JP)
International Classes:
F25B49/02; F25B1/00
Domestic Patent References:
| WO2015132959A1 | 2015-09-11 | |||
| WO2017141899A1 | 2017-08-24 | |||
| WO2009103469A2 | 2009-08-27 |
Foreign References:
| JP2013122364A | 2013-06-20 | |||
| JP2015209979A | 2015-11-24 | |||
| JPS639692B2 | 1988-03-01 |
Other References:
See also references of EP 3683524A4
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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