| 摘要 |
A hermetic compressor includes a housing accommodating a motor and a compressing mechanism driven by the motor, refrigerating machine oil, which is pooled in the housing, for lubricating the compressing mechanism, refrigerant gas sealed into the housing and to be refrigerant forming a refrigerating cycle, and an oil surface sensor including a thermistor having a given length. A part of the oil surface sensor is impregnated into the refrigerating machine oil, and the sensor senses a temperature immediately after energizing the thermistor and a rate of change in temperature onward, so that a position of an oil surface is detected.
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