Compressor and method of detecting quantity of mixture of coolant and lubricant in the compressor
AssigneeKabushiki Kaisha Toshiba
InventorsTetsuji Yamashita, Yukinobu Takahashi
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Abstract
A compressor has a motor and a compressor mechanism connected to the motor. The motor has a coil and is lubricated with lubricant. The compressor mechanism sucks and compresses low-pressure coolant and discharges high-pressure coolant. The compressor comprises a unit for preheating the lubricant, and a unit for detecting line-to-line impedance of the coil of the motor to know the quantity of a mixture of liquified coolant and the lubricant, and controlling activation of the preheating unit and of the compressor according to a result of the detection.
Claims5
In a compressor having a motor and a compressor mechanism connected to the motor, the motor having a coil and being lubricated with lubricant, the compressor mechanism sucking and compressing low-pressure coolant and discharging high-pressure coolant,
- a method of detecting the quantity of a mixture of liquefied coolant and the lubricant comprising the step of:
- detecting line-to-line impedance of the coil of the motor to know the quantity of the mixture.
A compressor having a motor and a compressor mechanism connected to the motor, the motor having a coil and being lubricated with lubricant, the compressor mechanism sucking and compressing low-pressure coolant and discharging high-pressure coolant, the compressor comprising:
- means for preheating the lubricant;
- and
- means for detecting line-to-line impedance of the coil of the motor to know the quantity of a mixture of liquefied coolant and the lubricant, and controlling activation of said preheating means and of the compressor according to a result of the detection.
Dependencies are inferred from the claim text.