Title:
DEVICE FOR CONTROLLING FLOW RATE OF CIRCULATING REFRIGERANT OF REFRIGERANT CIRCUIT HEAT PUMP, AND HEAT PUMP CAPABLE OF EFFICIENT FLOW RATE CONTROL OF CIRCULATING REFRIGERANT BY USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/118153
Kind Code:
A1
Abstract:
In conventional heat pumps, the refrigerant flow directions between an outdoor unit and an indoor unit during heating and cooling are opposite to each other. Thus, for each case, two fluid spaces, two check valves, and two constant-temperature expansion valves are provided to control the evaporation pressure of a refrigerant. In this case, to control an overheating temperature, the constant-temperature expansion valves control the elastic force of a spring (208) by turning a screw (209), thereby controlling the overheating temperature of refrigerant vapor sucked into a compressor. Meanwhile, all refrigerants have characteristics in which a pressure change according to a temperature change is not constant, the pressure change according to a temperature change is small at low temperature, and the pressure change according to a temperature change is great at high temperature. To overcome the physical properties of such refrigerants, the present invention relates to a means for maximizing the compression efficiency of a compressor by minimizing the specific volume of refrigerant vapor sucked into the compressor by always maintaining a constant overheating temperature in spite of a change in the outdoor air temperature, and an apparatus for implementing the means.
Inventors:
CHOI CHANG KYUN (KR)
Application Number:
PCT/KR2020/017455
Publication Date:
June 17, 2021
Filing Date:
December 02, 2020
Export Citation:
Assignee:
CHOI CHANG KYUN (KR)
International Classes:
F25B49/02; F25B30/02
Foreign References:
| KR880003185U | 1988-04-11 | |||
| JP2004309081A | 2004-11-04 | |||
| JP2012082972A | 2012-04-26 | |||
| JP2017026191A | 2017-02-02 | |||
| US20190323748A1 | 2019-10-24 | |||
| KR102171577B1 | 2020-10-29 |
Attorney, Agent or Firm:
JUNG, Joong Won et al. (KR)
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