| 摘要 |
A vapor compression refrigerant system is cycled in response to the refrigeration load. The system has a high-pressure-responsive safety protector for terminating operation of the system in response to an abnormally high-refrigerant pressure and a variable-speed condenser fan motor for controlling said refrigerant pressure in response to a variable resistance, said variable resistance being directly responsive to refrigerant pressure whereby said fan operates to maintain the refrigerant pressure below said abnormally high-refrigerant pressure immediately following startup of said compressor and above a predetermined minimum pressure during the run cycle of said system. The pressure-resistive transducer is a piezoresistive semiconductor.
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