Patent ID: 8082746

Claim:
A refrigeration cycle device for a vehicle, comprising: a refrigerant cycle in which a weak-inflammability refrigerant that does not ignite at a high-temperature heat source mounted in an engine compartment of the vehicle in a refrigerant single state is circulated, the refrigerant cycle including at least a compressor configured to compress the refrigerant and to discharge the compressed refrigerant so as to cause the refrigerant to be circulated in the refrigerant cycle; and a control device configured to control operation of the compressor, wherein the compressor comprises an oil separator that is located at a refrigerant discharge side of the compressor to separate a lubrication oil mixed in the refrigerant and to return the separated lubrication oil to an interior of the compressor, a shutting portion configured to shut a reverse flow of the refrigerant at a refrigerant suction side of the compressor, and a driving portion located to drive the shutting portion, the driving portion being configured to cause the shutting portion to shut the reverse flow of the refrigerant when the refrigerant cycle is damaged so that the refrigerant in the refrigerant cycle is leaked to an exterior of the refrigerant cycle, wherein the compressor is a variable displacement compressor in which a discharge capacity per one rotation is changeable between a minimum discharge capacity and a maximum discharge capacity, and the control device causes the compressor to set at the minimum discharge capacity in a vehicle collision.