Apparatus and method of oil charge loss protection for compressors
Номер патента: CA2127340C
Опубликовано: 14-09-1999
Автор(ы): Michael D. Carey, Robert L. Oltman
Принадлежит: American Standard Inc
Опубликовано: 14-09-1999
Автор(ы): Michael D. Carey, Robert L. Oltman
Принадлежит: American Standard Inc
Реферат: A method and apparatus for monitoring oil charge loss for use with a refrigeration system. The refrigeration system has a compressor for compressing a refrigerant gas, an oil/gas separator for separating compressed refrigerant from lubricating oil, a condenser for condensing the compressed refrigerant gas, an oil cooler for cooling oil separated from the refrigerant, the refrigerant and oil both having known and differing coefficients of heat transfer, and an injection system for injecting the cooled oil into the compressor. The method includes the steps of: a. determining the difference in temperatures of oil cooled in the oil cooler and refrigerant cooled in the oil cooler based on the known coefficients of heat transfer of the refrigerant and the oil and the cooling capacity of the oil cooler; b. sensing the temperature of the liquid in the oil cooler; c. sensing the temperature of the saturated refrigerant in the condenser; d. comparing the temperature of the liquid in the oil cooler and the temperature of the saturated refrigerant in the condenser; and e. generating a signal to shut down the compressor when the comparison of the temperature of the liquid in the oil cooler and the temperature of the saturated refrigerant in the condenser indicates that the liquid in the oil cooler is refrigerant or if the oil temperature is excessive.
Refrigerant filling apparatus of refrigerating and air conditioning apparatus and refrigerant filling method of refrigerating and air conditioning apparatus
Номер патента: EP2056046A3. Автор: Tatsunori c/o Mitsubishi Electric Corp.. Sakai,Masato c/o Mitsubishi Electric Corporati Yosomiya. Владелец: Mitsubishi Electric Corp. Дата публикации: 2014-12-17.