Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/014943
Kind Code:
A1
Abstract:
The purpose of this disclosure is to provide a refrigeration cycle device capable of suppressing retention of oil during indoor heating. A refrigeration cycle device (10) can perform indoor heating to warm blown air blown into a space to be air-conditioned. The refrigeration cycle device is provided with: a compressor (11) that compresses and discharges a refrigerant that includes oil; and a radiator (12) that warms blown air, using the refrigerant discharged from the compressor during indoor heating as a heat source. The refrigeration cycle device is provided with: a refrigerant decompression unit (13) that decompresses the refrigerant that has passed through the radiator; an evaporator (14) that functions as a heat sink during indoor heating; and an aperture control unit (80a) that controls the refrigerant decompression unit. At least during indoor heating, the aperture control unit executes fluctuation processing to vary the narrowing aperture of the refrigerant decompression unit so that the state of the refrigerant on the refrigerant exit side of the evaporator changes alternately between a superheating state of showing a degree of superheat and a moist state of including moist steam.
Inventors:
INAGAKI KOUJI (JP)
KATOU DAIKI (JP)
KAWANO HIROAKI (JP)
KATOH YOSHIKI (JP)
MAKIMOTO NAOYA (JP)
KATOU DAIKI (JP)
KAWANO HIROAKI (JP)
KATOH YOSHIKI (JP)
MAKIMOTO NAOYA (JP)
Application Number:
PCT/JP2020/026293
Publication Date:
January 28, 2021
Filing Date:
July 03, 2020
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F25B5/02; B60H1/22; F25B1/00; F25B7/00
Foreign References:
| JPH04203847A | 1992-07-24 | |||
| JP2006112700A | 2006-04-27 | |||
| JPH08200846A | 1996-08-06 | |||
| JPH04238720A | 1992-08-26 | |||
| JPH08296906A | 1996-11-12 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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