Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
Japanese Patent JP2015132434
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a novel refrigeration cycle device capable of suppressing the degradation in refrigerating machine oil by avoiding abnormal temperature rise of refrigerant R32 discharged from an outdoor expansion valve, and also suppressing a variation in the blow temperature in an indoor unit by setting small a ratio of a temperature change to a change in the opening of the outdoor expansion valve.SOLUTION: Flow characteristics of an outdoor expansion valve are such that a ratio of a flow change to a change in opening is set small in a low opening area and that the ratio of the flow change to the change in opening is set high in a high opening area. This can make a temperature change of refrigerant R32 small during a heating operation even if the refrigerant R32 is used, and can suppress degradation in refrigerating machine oil due to an abnormal temperature rise of a blow temperature of the refrigerant R32. Furthermore, it is possible to suppress a variation in the blow temperature in an indoor unit by setting small a ratio of the temperature change to the change in the opening of the outdoor expansion valve.
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Inventors:
TSUDA MIZUKI
TSUKADA FUKUJI
OKABE MASAYUKI
ISOGAWA TAKANORI
TSUKADA FUKUJI
OKABE MASAYUKI
ISOGAWA TAKANORI
Application Number:
JP2014004735A
Publication Date:
July 23, 2015
Filing Date:
January 15, 2014
Export Citation:
Assignee:
HITACHI APPLIANCES INC
International Classes:
F25B1/00; F25B13/00; F25B41/04
Attorney, Agent or Firm:
Polaire Patent Business Corporation
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