Patent ID: 7490480
Filing Date: 2009-02-17
Classification: F25B,F25D,Y02B

Abstract:
1. A refrigerator comprising: a cabinet shell including a fresh food compartment and a freezer compartment; a passage for fluidly interconnecting said fresh food compartment with said freezer compartment; a variable position damper provided in the passage for directing a flow of cooling air to the fresh food compartment from the freezer compartment; a refrigeration system for cooling at least the freezer compartment, said refrigeration system including a compressor, a condenser, an evaporator, an evaporator fan, and a fresh food compartment air stirring fan positioned in the fresh food compartment, each of said compressor, evaporator fan and stirring fan being operable at varying speeds; a plurality of sensors including a freezer compartment temperature sensor, an evaporator temperature sensor, a fresh food compartment sensor and an ambient temperature sensor for detecting various operating parameters of the refrigerator; and a control system for altering a position of the damper and varying an operational speed of each of the compressor, evaporator fan and stirring fan based on signals received from the plurality of sensors, said control system optimizing the operational speed of the evaporator fan based on signals received from the evaporator temperature sensor and the ambient temperature sensor.