Title:
冷凍サイクル装置
Document Type and Number:
Japanese Patent JP6758485
Kind Code:
B2
Abstract:
A refrigeration cycle apparatus includes: a first refrigerant circuit including a first compressor, an oil separator, a first heat exchanger that functions as a condenser, a first refrigerant flow passage of a second heat exchanger, a first expansion device, and a third heat exchanger that functions as an evaporator, the first refrigerant circuit allowing first refrigerant to flow therein; a second refrigerant circuit including a second compressor, a fourth heat exchanger that functions as a condenser, a second expansion device, and a second refrigerant flow passage of the second heat exchanger, the second refrigerant circuit allowing second refrigerant to flow therein; an oil return circuit that includes a first opening and closing device, connects the oil separator and the first compressor, and returns, to the first compressor, refrigerating machine oil stored in the oil separator, and a controller configured to control the first compressor, the second compressor, the first expansion device, the second expansion device, and the first opening and closing device, wherein the controller implements first control of starting operation of the second compressor, and opening the first opening and closing device, in a case where the first compressor and the second compressor are stopped, and pressure in a low pressure part of the first refrigerant circuit is a reference value or more.
Inventors:
Kensaku Hatanaka
Application Number:
JP2019513515A
Publication Date:
September 23, 2020
Filing Date:
April 17, 2017
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F25B7/00; F25B1/00; F25B43/00; F25B43/02
Domestic Patent References:
| JP2014031982A | ||||
| JP2009243767A | ||||
| JP6082107A | ||||
| JP4203760A |
Foreign References:
| WO2016121184A1 | ||||
| WO2014045394A1 |
Attorney, Agent or Firm:
Patent Business Corporation Kisa Patent Trademark Office