Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/168153
Kind Code:
A1
Abstract:
The present invention provides a refrigeration cycle device with which it is possible to inhibit unbalanced frost formation on an evaporator and prevent a decrease in heat exchange performance. The present invention provides a refrigeration cycle device (100) that comprises a main circuit and a bypass circuit and that exchanges heat by means of a supercooling heat exchanger (3) between a non-azeotropic mixed refrigerant circulating through the main circuit and a non-azeotropic mixed refrigerant circulating through the bypass circuit, the refrigeration cycle device (100) being provided with a control device (20) for controlling the opening degree of a bypass expansion valve (6) provided to the bypass circuit, a first sensor (7) for detecting the temperature on the refrigerant inflow side of an evaporator, and a second sensor (8) for detecting the pressure of the non-azeotropic mixed refrigerant flowing out from the evaporator. The control device (20) uses the temperature on the refrigerant inflow side of the evaporator and the saturated gas temperature of the non-azeotropic mixed refrigerant calculated from the pressure to control the opening degree of the bypass expansion valve (6), and adjust the flow rate of the non-azeotropic mixed refrigerant flowing into the evaporator. It is thereby possible to resolve temperature differences in the flow direction in the evaporator, inhibit unbalanced frost formation on the evaporator, and prevent a decrease in heat exchange performance.
Inventors:
MIZUNO YUKI (JP)
IKEDA SOSHI (JP)
MIYAWAKI KOSUKE (JP)
NISHIO JUN (JP)
MOTOMURA YUJI (JP)
WASHIYAMA HIROKI (JP)
IKEDA SOSHI (JP)
MIYAWAKI KOSUKE (JP)
NISHIO JUN (JP)
MOTOMURA YUJI (JP)
WASHIYAMA HIROKI (JP)
Application Number:
PCT/JP2021/003709
Publication Date:
August 11, 2022
Filing Date:
February 02, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F25B1/00
Domestic Patent References:
| WO2018078809A1 | 2018-05-03 | |||
| WO2019021364A1 | 2019-01-31 |
Foreign References:
| JP2013002744A | 2013-01-07 | |||
| JP2014202365A | 2014-10-27 | |||
| JP2016525666A | 2016-08-25 | |||
| JPH1089779A | 1998-04-10 | |||
| JP2004044883A | 2004-02-12 |
Other References:
See also references of EP 4290158A4
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
Download PDF: