| 摘要 |
PROBLEM TO BE SOLVED: To provide a flow rate regulation valve for an indoor evaporator, which uses a function of the frost control also as the function of an expansion valve.SOLUTION: A flow rate regulation valve is used for a refrigeration cycle device for air conditioning. The flow rate regulation valve is constituted by an inlet flow rate control valve 19a connected to the inlet side of an indoor evaporator 20 and functioning in the refrigeration cycle device as an expansion valve for depressurizing and expanding a refrigerant flowing into the indoor evaporator, and an outlet flow rate adjustment valve 19b connected to the outlet side of the indoor evaporator 20 and functioning as an evaporation pressure adjustment valve for adjusting the evaporation pressure in the indoor evaporator 20 to a prescribed target pressure at which frost is not formed. When the degree of valve opening of one of the inlet flow rate control valve 19a and the outlet flow rate adjustment valve 19b increases, the degree of valve opening of the other decreases. |
