Title:
AIR-CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/162819
Kind Code:
A1
Abstract:
[Problem] To provide an air-conditioning device that achieves both increased reliability of a compressor and improved heating performance at the startup of heating operation. [Solution] A refrigeration cycle comprising an indoor unit 200 and an outdoor unit 100, wherein the outdoor unit 100 has: a refrigeration cycle that includes an expansion valve 110, a heat exchanger 114 and a compressor 108; and a control device 102 that controls the operation of the refrigeration cycle. The outdoor unit 100 is equipped with a pressure sensor 104 that measures the pressure of refrigerant flowing between the heat exchanger 114 and the compressor 108, and a temperature sensor 106 that measures the temperature of the refrigerant. When the refrigeration cycle starts heating operation, the control device 102 controls the opening of the expansion valve 110 on the basis of the degree of superheat of the refrigerant sucked into the compressor 108.
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Inventors:
YAMAMOTO Shoutaro (JP)
KANEKO Hiroaki (JP)
MIAO Miao (JP)
KANEKO Hiroaki (JP)
MIAO Miao (JP)
Application Number:
PCT/JP2021/002974
Publication Date:
August 04, 2022
Filing Date:
January 28, 2021
Export Citation:
Assignee:
HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (JP)
International Classes:
F25B1/00
Attorney, Agent or Firm:
MAYAMA INTERNATIONAL PATENT OFFICE (JP)
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