Title:
空気調和装置
Document Type and Number:
Japanese Patent JP6479162
Kind Code:
B2
Abstract:
The present invention includes a controller 30 that performs a pump-down operation in which, when a leakage of refrigerant is detected, a flow switching device 11 is switched to a direction of a cooling operation so that refrigerant in a refrigerant main pipe 3 is recovered into a heat-side heat exchanger 12 and an accumulator 14, and in which a refrigerant shutoff device 13, a bypass opening-closing device 15 and operation of a compressor 10 are controlled, and then performs a refrigerant leakage amount reduction operation in which the flow switching device 11 is switched to a direction of a heating operation so that the recovered refrigerant is enclosed in the heat-side heat exchanger 12 and the accumulator 14, and in which the refrigerant shutoff device 13, the bypass opening-closing device 15 and operation of the compressor 10 are controlled.
Inventors:
Ryomune Ishimura
Osamu Morimoto
Hatomura Jie
Osamu Morimoto
Hatomura Jie
Application Number:
JP2017509120A
Publication Date:
March 06, 2019
Filing Date:
April 03, 2015
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F25B49/02; F24F11/36; F24F11/86; F25B1/00
Domestic Patent References:
| JP2013122364A | ||||
| JP2007178026A | ||||
| JP2003106689A | ||||
| JP2009300009A | ||||
| JP2011021837A | ||||
| JP2000249385A | ||||
| JP4369370A | ||||
| JP63120063U |
Foreign References:
| WO2015015617A1 | ||||
| WO2010050001A1 |
Attorney, Agent or Firm:
Patent Business Corporation Kisa Patent Trademark Office