Title:
冷凍サイクル装置
Document Type and Number:
Japanese Patent JP6699460
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a refrigeration cycle device including an evaporation pressure regulation valve, constituted to switch a refrigerant circuit, and capable of suppressing frost formation on a heat exchanger for cooling.SOLUTION: An evaporation pressure regulation valve 19 for raising a refrigerant evaporation pressure in an indoor evaporator 18 in accompany with increase of a flow rate of a refrigerant circulated in the indoor evaporator 18, is disposed at a downstream side of the indoor evaporator 18, and a pressure regulation characteristic of the evaporation pressure regulation valve 19 is determined according to the flow rate of the refrigerant circulated in a cooling mode. In a dehumidification heating mode in which the flow rate of the refrigerant is reduced in comparison with that in a cooling mode, the control to prevent temperature down is executed by changing an area ratio Ae2/Ae1 of a second throttle passage area Ae2 of a second expansion valve 15b disposed at an upstream side of the indoor evaporator 18 to a first throttle passage area Ae1 of a first expansion valve 15a disposed at an upstream side of an outdoor heat exchanger 16, so that the flow rate of the refrigerant is increased with respect to a reference flow rate.SELECTED DRAWING: Figure 1
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Inventors:
Hiroyuki Kobayashi
Application Number:
JP2016167742A
Publication Date:
May 27, 2020
Filing Date:
August 30, 2016
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F25B47/02; F25B1/00; F25B6/04; F25B29/00; F25B41/06
Domestic Patent References:
| JP2016053435A | ||||
| JP2015137778A | ||||
| JP2016011760A |
Foreign References:
| WO2013172201A1 |
Attorney, Agent or Firm:
Patent Business Corporation Kaisei Patent Office