Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/116533
Kind Code:
A1
Abstract:
A refrigeration cycle device relating to the present invention has a heating mode and a defrosting mode as operation modes. The refrigeration cycle device is provided with a compressor (10), first and second heat exchangers, an expansion valve, and a control device. The compressor (10) is driven by means of a motor (12). The compressor (10) stores a refrigerator oil. The control device drives the motor (12). In the heating mode, a refrigerant (RL1) circulates in the order of the compressor (10), the first heat exchanger, the expansion valve, and the second heat exchanger. The density of the refrigerant (RL1) is smaller than that of the refrigerator oil (RO1). In the compressor (10), the liquid refrigerant (RL1) and the refrigerator oil (RO1) are separated into two layers in the defrosting mode. The control device increases a heat loss of the motor (12) in the defrosting mode more than a heat loss of the motor in the heating mode.
Inventors:
MAEYAMA HIDEAKI (JP)
SAKAI AKIRA (JP)
SAKAI AKIRA (JP)
Application Number:
PCT/JP2017/045084
Publication Date:
June 20, 2019
Filing Date:
December 15, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B47/02
Foreign References:
| JP2012251714A | 2012-12-20 | |||
| JP2011169474A | 2011-09-01 | |||
| JP2010032102A | 2010-02-12 | |||
| JPS59221543A | 1984-12-13 | |||
| JP2010008003A | 2010-01-14 | |||
| JP2004116794A | 2004-04-15 | |||
| JPS59221543A | 1984-12-13 |
Other References:
See also references of EP 3726163A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF:
Previous Patent: INK JET HEAD, INK JET RECORDING APPARATUS, AND INK JET HEAD MANUFACTURING METHOD
Next Patent: FILM MANUFACTURING DEVICE
Next Patent: FILM MANUFACTURING DEVICE