Title:
REFRIGERATION CYCLE DEVICE
Document Type and Number:
Japanese Patent JP2022060863
Kind Code:
A
Abstract:
To effectively recover refrigerator oil accumulated in an evaporator.SOLUTION: A refrigeration cycle device comprises: a compressor 11 sucking and compressing a refrigerant, and delivering the compressed refrigerant; heat radiation units 12, 20 and 22 which exchanges heat between the refrigerant delivered from the compressor and air to be supplied to an air-conditioning object and releases the exchanged heat; a first depressurization unit 13 which depressurizes the refrigerant and can close a flow passage of the refrigerant; a first evaporation unit 14 which exchanges heat between the refrigerant depressurized by the first depressurization unit and air, absorbs heat from the air thereby evaporating the refrigerant; a second depressurization unit 16 arranged in parallel with the first depressurization unit in a flow of the refrigerant, and depressurizing the refrigerant; a second evaporation unit 17 causing the refrigerant depressurized by the second depressurization unit to absorb heat thereby evaporating the refrigerant; and a control unit 60 performing oil recovery control for controlling the first decompression portion in such a manner that a flow passage is opened when the first depressurization unit closes the flow passage, and it is determined that refrigerator oil mixed in the refrigerant stays in the first evaporation unit.SELECTED DRAWING: Figure 7
Inventors:
OKAMURA TORU
MIURA KOJI
KONO HIROAKI
MAKIMOTO NAOYA
KATO YOSHITAKE
MIURA KOJI
KONO HIROAKI
MAKIMOTO NAOYA
KATO YOSHITAKE
Application Number:
JP2020168603A
Publication Date:
April 15, 2022
Filing Date:
October 05, 2020
Export Citation:
Assignee:
DENSO CORP
International Classes:
F25B1/00; B60H1/22; F25B5/02; F25B41/20
Attorney, Agent or Firm:
Patent Business Corporation Kaisei Patent Office