Patent ID: 9746210
Date: 2017-08-29
CPC Classifications: F25B

Claim:
1. An air conditioner comprising: first and second compressors for compressing a refrigerant that is injected into the first and second compressors, wherein the compressing comprises multi-stage compression; a condenser for condensing the refrigerant compressed in the first and second compressors; a refrigerant separation device for separating the refrigerant before the refrigerant is injected into the first and second compressors; injection tubes extending from the refrigerant separation device to the first and second compressors to guide the injection of the refrigerant; a main expansion device disposed at an outlet-side of the refrigerant separation device for decompressing the refrigerant condensed in the condenser; an evaporator for evaporating the refrigerant decompressed in the main expansion device; a valve device disposed at an outlet-side of the first compressor for guiding the refrigerant compressed in the first compressor to the condenser or to the second compressor; and a bypass tube extending from the valve device to a suction-side of the second compressor, wherein the valve device comprises: