To provide a refrigeration cycle device that improves ease of superheat degree control without being affected by variation in operating conditions to maintain a stable operation state.
A refrigeration and air conditioning device 100 includes: a compressor 1; a condenser 2; a first expansion valve 3; a gas-liquid separator 7; an internal heat exchanger 6; a second expansion valve 4; an evaporator 5; a bypass pipe 8; and a third expansion valve 9. The establishment of a plurality of decompression devices, of the internal heat exchanger for heat exchange between an intermediate pressure coolant and a low pressure coolant, and of the gas-liquid separator can maintain the pressure of the intermediate pressure coolant at a constant level and stabilize a pressure difference between the intermediate pressure and the low pressure.
SAITO MAKOTO
UNEZAKI FUMITAKE
| JP2011214753A | 2011-10-27 | |||
| JP2009257756A | 2009-11-05 | |||
| JPH07310958A | 1995-11-28 | |||
| JPS546163A | 1979-01-18 | |||
| JP2007178042A | 2007-07-12 | |||
| JP2009168330A | 2009-07-30 | |||
| JP2011214753A | 2011-10-27 | |||
| JP2009257756A | 2009-11-05 | |||
| JPH07310958A | 1995-11-28 | |||
| JPS546163A | 1979-01-18 |
| WO1999015841A1 | 1999-04-01 | |||
| WO2010061624A1 | 2010-06-03 | |||
| WO2008032558A1 | 2008-03-20 | |||
| WO1999015841A1 | 1999-04-01 |
安島 清
小林 久夫
小河 卓
山東 元希
村田 健誠
高梨 範夫