Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/144728
Kind Code:
A1
Abstract:
This refrigeration cycle device comprises: a refrigeration cycle circuit in which a compressor, a condenser, a first expansion valve, and an evaporator are connected by refrigerant piping; injection piping the refrigerant-inflow-side end of which is connected between the condenser and the first expansion valve and the refrigerant-outflow-side end of which is connected to the intake side of the compressor; a second expansion valve that is provided in the injection piping; and a control device that controls the rotational speed of the compressor and the degree of opening of the second expansion valve. The control device is configured to perform low load operation to cause a refrigerant to flow through the injection piping when the heat exchanging capacity of the evaporator is reduced in a state in which the rotational speed of the compressor is at a stipulated speed.
Inventors:
IMANISHI TOSHIKI (JP)
TATSUWAKI KOHEI (JP)
TATSUWAKI KOHEI (JP)
Application Number:
PCT/JP2019/000058
Publication Date:
July 16, 2020
Filing Date:
January 07, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00; F25B1/04
Domestic Patent References:
| WO2016079858A1 | 2016-05-26 | |||
| WO2018198164A1 | 2018-11-01 |
Foreign References:
| JPH0367958A | 1991-03-22 | |||
| JP2018054235A | 2018-04-05 | |||
| JP2010071614A | 2010-04-02 | |||
| JP2016011768A | 2016-01-21 |
Other References:
See also references of EP 3910263A4
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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