Patent ID: 9746226
Date: 2017-08-29
CPC Classifications: F25B,F25D,Y02B

Claim:
1. A refrigerator comprising: a plurality of compressors configured to compress a refrigerant and including a first compressor and a second compressor; a condenser configured to condense the refrigerant compressed in the compressor; a refrigerant tube to guide a flow of the refrigerant condensed in the condenser; an expansion device configured to decompress the refrigerant condensed in the condenser; and an evaporator configured to evaporate the refrigerant decompressed in the expansion device, wherein the evaporator includes: wherein the one-stage compressed refrigerant in the coupling tube is heat-exchanged with the refrigerant of the evaporation tube, suctioned into the first compressor, and two-stage compressed.