Title:
AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2019/058464
Kind Code:
A1
Abstract:
An air conditioner comprises: bypass piping that branches from between an outdoor heat exchanger and an expansion valve in a refrigerant circuit and is connected to the intake side of a compressor; a bypass flow rate regulating valve that is provided in the bypass piping; a supercooling heat exchanger that exchanges heat between refrigerant between the outdoor heat exchanger and the expansion valve and refrigerant downstream of the bypass flow rate regulating valve in the bypass piping; cooling piping that is constituted by a portion of the piping between the outdoor heat exchanger and the supercooling heat exchanger and that cools a control device by the control device being disposed so to be in contact with same; and a temperature regulating valve that is provided between the outdoor heat exchanger and the cooling piping and that regulates the temperature of the refrigerant passing through the cooling piping. The control device controls the temperature regulating valve so that the temperature of a heat dissipation unit of the control device is less than a preset reference value during cooling operation and controls the bypass flow rate regulating valve so that the degree of supercooling at the outlet of the supercooling heat exchanger exceeds a preset value.
Inventors:
IWASAKI KAZUHISA (JP)
Application Number:
PCT/JP2017/033930
Publication Date:
March 28, 2019
Filing Date:
September 20, 2017
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Domestic Patent References:
| WO2017145276A1 | 2017-08-31 |
Foreign References:
| JP2014102050A | 2014-06-05 | |||
| JPH1134640A | 1999-02-09 | |||
| JP2015040680A | 2015-03-02 | |||
| JPH11325639A | 1999-11-26 | |||
| JP2007198638A | 2007-08-09 | |||
| JP2009085526A | 2009-04-23 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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