| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-pressure control mechanism for air-cooled heat pumps that allows efficient high-pressure control, focusing attention on an air-cooled heat pump including a supercooling circuit. <P>SOLUTION: In an air-cooled heat pump 1 including a supercooling circuit 19 in which a portion of a liquid refrigerant diverted from a liquid refrigerant piping line 11B flows through an electronic expansion valve 20 for supercooling and a supercooling heat exchanger 18 flows into an intake pipe 11C of a compressor 2, a high-pressure-control bypass circuit 21 is provided that has an end thereof connected to a discharge pipe 11A of the compressor 2 and another end thereof connected to the supercooling circuit 19 via switching means 22, 23 and that allows a portion of a high-pressure refrigerant gas discharged from the compressor 2 bipassingly flow through the electronic expansion valve for supercooling 20 into the liquid refrigerant piping line 11B. <P>COPYRIGHT: (C)2013,JPO&INPIT |
