To provide a heat pump cycle device performing subcooling operation corresponding to various operating conditions and improving operation efficiency.
The heat pump cycle device includes: a refrigerant circuit constituted by sequentially interconnecting a compressor 1, a use side heat exchanger 3 exchanging heat between water and a refrigerant, an electronic expansion valve 4 and an outdoor heat exchanger 5 by piping; a control means 7 controlling the refrigerant circuit; a subcooling calculation means 14 calculating subcooling of the refrigerant circuit; a condensation pressure detection means 13 detecting condensation pressure of the compressor 1; a compressor rotational frequency detection means 7b detecting rotational frequency of the compressor 1; and a target subcooling extraction means 7a determining target subcooling based on the condensation pressure and the rotational frequency of the compressor 1. The control means 7 controls an opening of the electronic expansion valve 4 so that the subcooling of the refrigerant circuit becomes a target subcooling temperature.
| JP2012127648 | HEAT PUMP APPARATUS |
| JP3708536 | Refrigeration cycle device and its control method |
| JPS63180049 | REFRIGERATION CYCLE |
SUGIYAMA TAKASHI
FUJI TOSHIYUKI
ABIKO HIROSHI
| JPH0828985A | 1996-02-02 | |||
| JPH04363552A | 1992-12-16 | |||
| JP2006200843A | 2006-08-03 | |||
| JP2005140431A | 2005-06-02 | |||
| JP2004012127A | 2004-01-15 | |||
| JP2002081767A | 2002-03-22 |