Title:
REFRIGERATION CYCLE
Document Type and Number:
WIPO Patent Application WO/2019/044353
Kind Code:
A1
Abstract:
A refrigeration cycle device wherein, in an operation mode in which a refrigerant is made to flow to an indoor evaporator (16) and blown air is cooled by the indoor evaporator, the throttle opening characteristic of an expansion valve (15a) for cooling that is configured from a mechanical mechanism is set such that the refrigerant at the outlet side of the indoor evaporator is in a gas-phase state. In an operation mode in which blown air is heated by using as a heat source heat absorbed from outside air by an outdoor evaporator (18), the throttle opening characteristic of a valve (15b) for heat absorption that is configured from a mechanical mechanism is set such that the refrigerant at the outlet side of the outdoor evaporator is in a gas-liquid two-phase state. Thus, in the operation mode in which the blown air is heated, it is possible to suppress the accumulation of refrigerant oil in the outdoor evaporator. Furthermore, the state of the refrigerant flowing from the evaporators can be adjusted appropriately in accordance with the operation mode without increasing the complexity of the cycle configuration.
Inventors:
MAKIMOTO NAOYA (JP)
KATO YOSHIKI (JP)
KATO YOSHIKI (JP)
Application Number:
PCT/JP2018/028966
Publication Date:
March 07, 2019
Filing Date:
August 02, 2018
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F25B5/02; B60H1/22; F25B1/00; F25B6/04; F25B49/02
Domestic Patent References:
| WO2017038677A1 | 2017-03-09 | |||
| WO2015111379A1 | 2015-07-30 | |||
| WO2017130845A1 | 2017-08-03 | |||
| WO2017022421A1 | 2017-02-09 |
Foreign References:
| JP2005289152A | 2005-10-20 | |||
| JP2015067206A | 2015-04-13 | |||
| JP2014037179A | 2014-02-27 | |||
| JP2015101180A | 2015-06-04 | |||
| JP2012061911A | 2012-03-29 | |||
| JP2014516860A | 2014-07-17 | |||
| EP2933586A1 | 2015-10-21 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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