To provide an air conditioning device easily and efficiently preventing accumulation of a refrigerant in a compressor, which determines the accumulation of the refrigerant in the compressor on the basis of detecting conditions of a compressor shell temperature and an outside air temperature, and also determines whether an operation of a compressor heating device is needed.
A compressor shell thermistor 21 for detecting a temperature of the shell is disposed in the compressor shell incorporated in an outdoor unit 10 of the air conditioner. An outside air temperature thermistor 22 for detecting the outside air temperature is disposed in the outdoor unit. The outside air temperature and the compressor shell temperature are compared, and the compressor heating device is made disabled when the shell temperature is higher than the outside air temperature. A refrigerant accumulating condition is determined, and the compressor heating device is operated, when the shell temperature is lower than the outside air temperature. In the case where the shell temperature is higher than the outside air temperature by a certain specific temperature or more, the operation of the compressor heating device is stopped, thus the wasteful standby power is reduced, and energy-saving of the device is achieved.
AOKI MASANORI
SHIBA HIROKUNI
| JPH0626716A | 1994-02-04 | |||
| JPH0828987A | 1996-02-02 | |||
| JPH01300149A | 1989-12-04 | |||
| JP2002277075A | 2002-09-25 | |||
| JPH11108474A | 1999-04-23 | |||
| JPH0626716A | 1994-02-04 |
Kiyoshi Yasushima
Takanashi Norio
Taku Ogawa