| 摘要 |
PROBLEM TO BE SOLVED: To provide a refrigerating air-conditioning device capable of securing a heating capacity when a temperature of outside air is low without excessively raising a compressor discharge temperature. SOLUTION: In the air-conditioning device, a heat source machine 100 having a compressing device 110 with one end of an injection pipe 161 connected thereto allowing a refrigerant flowing in the injection pipe 161 to flow to an intermediate part of a compressing stroke and discharging, and a heat source machine-side heat exchanger 131 for exchanging heat is connected by piping to an indoor unit 200 having an indoor unit-side heat exchanger 210 exchanging heat between air to be conditioned and the refrigerant, and an indoor unit-side control device 220 to constitute a refrigerant circuit. One end of the injection pipe 161 is connected to a position where the refrigerant discharged by the compressing device 110 is branched and flows, and the injection pipe is disposed to be in contact with a part of the heat source-side heat exchanger 131 so that the branched refrigerant exchanges heat with the refrigerant flowing in the heat source machine side heat exchanger 131 and is condensed. COPYRIGHT: (C)2011,JPO&INPIT |
