| 摘要 |
PROBLEM TO BE SOLVED: To prevent the lubrication of the sliding part in a compressor from being disturbed, by reducing the quantity of a lubricant discharged into a freezing cycle from the compressor, in case where the lubricant runs shorts. SOLUTION: This is a freezing cycle where a compressor 1, a condenser, a throttle device 4, and an evaporator are connected in a circular form through a pipe respectively, and which is provided with an oil detection means 8 for detecting the quantity of a lubricant within the compressor 1, and this freezing cycle is provided with a lubricant control means 9 which operates the compressor 1 for a specified time decided in advance with low-speed revolution when the oil detection means 8 detects the shortage of the lubricant.
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