Title:
REFRIGERANT CIRCUIT SYSTEM, CONTROL DEVICE AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2018/110236
Kind Code:
A1
Abstract:
This refrigerant circuit system is provided with: a refrigerant circuit comprising a compressor, a condenser, a receiver tank, an expansion valve, an evaporator, an accumulator, a bypass circuit connecting the gas phase portion of the receiver tank and the accumulator, and an opening/closing valve for controlling opening and closing of the bypass circuit; and a control device which controls operation of the refrigerant circuit. Before pausing heating operation in the refrigerant circuit, the control device performs a frost suppression operation in which the refrigerant discharged by the compressor is circulated in order through the condenser, the receiver tank, the bypass circuit, the accumulator and the compressor, and the evaporator is defrosted.
Inventors:
TAKEZAWA HIDEYUKI (JP)
KAI MASAKAZU (JP)
KAI MASAKAZU (JP)
Application Number:
PCT/JP2017/042001
Publication Date:
June 21, 2018
Filing Date:
November 22, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)
International Classes:
F25B47/02; F24F11/41; F25B1/00; F25D11/00; F25D21/06
Foreign References:
| JP2011247476A | 2011-12-08 | |||
| JP2007278536A | 2007-10-25 | |||
| JPH11294885A | 1999-10-29 | |||
| JPS57182041A | 1982-11-09 | |||
| JP2003083646A | 2003-03-19 | |||
| JP2014066413A | 2014-04-17 | |||
| JP2004053207A | 2004-02-19 | |||
| JP2016242476A | 2016-12-14 | |||
| JPS5535510B2 | 1980-09-13 | |||
| JP2016151410A | 2016-08-22 | |||
| JP2007085730A | 2007-04-05 |
Other References:
See also references of EP 3540338A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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