REFRIGERATION CYCLE DEVICE

摘要

A first outward passage 22 and a second outward passage 23 are branched from a branch portion 20 to guide refrigerants to a first evaporator 17 and a second evaporator 18, respectively. In the second outward passage 23 with a longer refrigerant flow path of the first and second outward passages 22 and 23, a second decompressor 19 is disposed closer to the branch portion 20 rather than the second evaporator 18 in the second outward passage 23. Further, a part 23b of the second outward passage 23 located on the downstream side of the refrigerant flow with respect to the second decompressor 19 is defined by an inner pipe of a double pipe 28, and a part of a second return passage 26 is defined by an outer pipe of the double pipe 28.

主权项

1. A refrigeration cycle device comprising:
a compressor that compresses and discharges a refrigerant; a radiator that dissipates heat from the refrigerant discharged from the compressor; a first decompressor and a second decompressor that are arranged in parallel on a downstream side of the radiator in a refrigerant flow, the first and second decompressors being adapted to decompress the refrigerant flowing out of the radiator; a first evaporator that exchanges heat between the refrigerant decompressed by the first decompressor and a first object to be cooled, to cool the first object to be cooled and to evaporate the refrigerant; a second evaporator that exchanges heat between the refrigerant decompressed by the second decompressor and a second object to be cooled, to cool the second object to be cooled and to evaporate the refrigerant; a first outward passage and a second outward passage which are refrigerant flow paths branched from a branch portion provided on the downstream side of the refrigerant flow through the radiator, and which are adapted to guide the refrigerants from the branch portion to refrigerant inlets of the first evaporator and the second evaporator, respectively; and a first return passage and a second return passage which are refrigerant flow paths merging at a merging portion provided on an upstream side of a refrigerant flow through the compressor, and which are adapted to guide the refrigerants from refrigerant outlets of the first evaporator and the second evaporator, respectively, to the merging portion, wherein the second outward passage has a refrigerant flow path longer than that of the first outward passage, a part of the second outward passage, located on a downstream side of a refrigerant flow with respect to the second decompressor, is defined by an inner pipe of a double pipe and an outer pipe covering the inner pipe, at least a part of the second return passage is defined by the outer pipe, and the second decompressor is provided in the second outward passage on a side of the branch portion with respect to the double pipe.