| 摘要 |
PROBLEM TO BE SOLVED: To prevent abnormal temperature rise at the outlet of a refrigerant heater by balancing the heating quantity and the circulation quantity of refrigerant appropriately. SOLUTION: The control system comprises means 74 for operating the saturation temperature of outlet pressure of a refrigerant heater, means 76 for detecting the outlet temperature of the refrigerant heater, means 73 for detecting current operating frequency of compressor, means 78 for operating the degree of superheat based on the outputs from the means 76, 74, 73, and means 82 for altering the compressor frequency such that the operated degree of superheat has a specified value. |
