Patents Assigned to The United States Environmental Production Agency
  • Patent number: 5406805
    Abstract: A refrigeration system for providing cooling to two or more compartments utilizing respective first and second evaporators. During the initial operation of a cooling cycle, the refrigerant is utilized for cooling the compartment (such as a fresh food compartment) which is to be maintained at a higher temperature as compared with another compartment (such as a freezer compartment). Cooling can thus be achieved by operating a fan in the fresh food compartment, even where the refrigeration system has not yet reached steady state after the compressor initially begins operating. After cooling has been achieved in the fresh food compartment, the refrigerant in the system has reached a state suitable for cooling of the freezer compartment, and the fan for the freezer evaporator is turned on while the fan for the fresh food compartment is turned off.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: April 18, 1995
    Assignees: University of Maryland, The United States Environmental Production Agency
    Inventors: K. Reinhard H. Radermacher, Kwangil Kim, William L. Kopko, Jurgen Pannock