| 摘要 |
The invention provides a relief valve for discharging refrigerant in a receiver drier equipped to an air conditioner of a car. A receiver drier 1 of an air conditioner of a car has an inlet path 44 and an outlet path 46 of refrigerant formed to a body 10, and retains refrigerant. A valve chamber 184 is formed to the end of the body 10, which communicates with the atmosphere via a path 182 and a path 184. A plunger 170 of a solenoid valve 100 is regularly in contact with a valve seat 180. When power is supplied to the coil 120 based on a signal from a sensor, an attractor 140 separates the plunger 170 from the valve seat 180 and allows the refrigerant to be discharged to the atmosphere.
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