REFRIGERANT CIRCUIT DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a refrigerant circuit device capable of improving operation efficiency in heat pump operation. SOLUTION: The refrigerant circuit device includes: a main circuit 20 constituted by interconnecting interior heat exchangers 24, a compressor 21, an exterior heat exchanger 22 and an expansion mechanism 23 by refrigerant piping 25; a branch introducing route 30 for branching a refrigerant compressed by the compressor 21 and supplying the refrigerant to the interior heat exchangers 24 arranged in a room to be heated; a heat release route 40 introducing a refrigerant condensed by the interior heat exchangers 24 and supplying the refrigerant to a radiator 42; and a return route 50 introducing a refrigerant of which heat is released by the radiator 42 and returning the refrigerant to the main circuit 20. The main circuit 20 is formed by interconnecting in series the plurality of interior heat exchangers 24 dedicated for cooling and evaporating a supplied refrigerant, so that the refrigerant passed through one interior heat exchanger 24 is made to pass through the other interior heat exchangers 24. COPYRIGHT: (C)2011,JPO&INPIT