Patent ID: 7707851

Claim:
An air conditioner comprising: two or more heat exchangers for performing heat exchanging between air or water and refrigerant; a refrigerant pipe for guiding refrigerant circulating between the two or more heat exchangers; a compressor for compressing refrigerant flowing in the refrigerant pipe to a high temperature and pressure; an accumulator, provided on one side of the compressor, for separating an inflowing refrigerant into a liquid refrigerant and a gaseous refrigerant; and an overcooler provided on one side of the heat exchangers, for further cooling refrigerant passing through the heat exchangers, wherein the overcooler comprises: a reverse transfer pipe divided from the refrigerant pipe, for guiding a divided portion of a main refrigerant flowing through the refrigerant pipe in another direction; an expansion unit provided on the reverse transfer pipe, for expanding the divided refrigerant guided by the reverse transfer pipe; and a plurality of overcooling pipes for performing heat exchange between the main refrigerant flowing through the refrigerant pipe and the divided refrigerant flowing through the reverse transfer pipe, wherein the plurality of overcooling pipes are coupled in one of parallel or series.