Refrigerating apparatus and control method thereof
Patent 4798057 Issued on January 17, 1989. Estimated Expiration Date: 
March 6, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
March 6, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 1750336 2267607 Pressure compensated control for air conditioning system or heat pump Air conditioning system Patent #: 4480442 InventorsApplicationNo. 07/022816 filed on 03/06/1987US Classes:62/228.3, By refrigerant pressure62/209, Compensating or modifying62/228.4By variable speed motor or pulley type mechanismExaminersPrimary: Tanner, Harry B.Attorney, Agent or FirmInternational ClassF25B 49/02 (20060101)Foreign Application Priority Data1986-03-28 JPAbstractA refrigerating apparatus executing the redistributing operation of refrigerant when the actual suction pressure of a compressor is lower than a suction pressure lower limit value. The suction pressure lower limit value is varied in response to the condensation temperature of refrigerant which varies in accordance with the actual temperature in the vicinity of a condenser. When the condensation temperature of refrigerant is greater than a predetermined comparison value, a first limit value is selected as the suction pressure lower limit value. Otherwise, a second limit value less than the first limit value is selected. The refrigerating apparatus may be controlled in accordance with the selected suction pressure lower limit value.Field of SearchBy refrigerant pressureCompressor or its drive controlled By variable speed motor or pulley type mechanism By variable compressor output, e.g., unloading, staging, etc. Controlling compressor or its drive, e.g., torque or speed Plural refrigerating producing elements and plural sensors Single refrigeration producer controlled by plural sensors Compensating or modifying Back flow or pressure regulator Controlling variable compressor capacity | |
