To provide a freezing apparatus which discriminates a decrease of heat-transfer performance at a refrigerant side and that of a water side, and controls a compressor.
The freezing apparatus includes: a freezing cycle device 1a in which a freezing cycle is formed such that a compressor 2, a condenser 3, an expanding valve 4, and a plate-type heat exchanger 5 are connected in this order via a refrigerant pipe; a temperature detecting means 6 which detects a refrigerant temperature at an absorbing side of the compressor; a pressure detecting means 7 which detects a refrigerant pressure at the absorbing side of the compressor; a controlling means which calculates a degree of superheat of refrigerant of the compressor 2 based on the refrigerant pressure detected by the pressure detecting means 7 and the refrigerant temperature detected by the temperature detecting means 6 and which controls a capacitance of the compressor 2 based on the refrigerant pressure and the degree of superheat of the refrigerant.
| JP2006317050A | 2006-11-24 | |||
| JP2002071192A | 2002-03-08 | |||
| JP2008190757A | 2008-08-21 | |||
| JP2003287291A | 2003-10-10 | |||
| JP2009019777A | 2009-01-29 | |||
| JPH074727A | 1995-01-10 | |||
| JPH0215782B2 | 1990-04-13 | |||
| JPH11101514A | 1999-04-13 | |||
| JPH07151429A | 1995-06-16 |
| US20060168973A1 | 2006-08-03 | |||
| WO2010106814A1 | 2010-09-23 |
Kiyoshi Yasushima
Takanashi Norio
Motoki Shandong
Taku Ogawa
Murata Kensei
Moto Otani
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