초록 ▼

This invention relates to a system for the control of electrical apparatus with particular reference to control by electric sensors, and with special reference to a control system for domestic appliances, such as refrigerators. The system may be adapted to control of appliances such as dishwashers,

This invention relates to a system for the control of electrical apparatus with particular reference to control by electric sensors, and with special reference to a control system for domestic appliances, such as refrigerators. The system may be adapted to control of appliances such as dishwashers, dryers, washers, stoves, etc. The preferred embodiment is microcomputer based. Thus, the system enables lower energy consumption, more accurate temperature maintenance and more effective servicing and monitoring of the mechanical condition of the apparatus to which it is applied.

대표청구항 ▼

A refrigerator-freezer combination comprising: a refrigerator compartment for holding food stuffs that are to be maintained at a chilled, above freezing temperature; a freezer compartment for retaining food stuffs that are to be held at a below freezing temperature; a cooling coil disposed in the fr

A refrigerator-freezer combination comprising: a refrigerator compartment for holding food stuffs that are to be maintained at a chilled, above freezing temperature; a freezer compartment for retaining food stuffs that are to be held at a below freezing temperature; a cooling coil disposed in the freezer compartment for cooling air below freezing when receiving a coolant fluid from a compressor; a fan means for circulating air over the cooling coil; a duct work system operatively connecting with the refrigerator compartment, the freezer compartment, the fan, and the cooling coil such that the fan draws air from both the refrigerator and freezer compartments and circulates it over the cooling coil, the duct work system further channelling cooled air from the cooling coil to the freezer compartment and from the frozen compartment to the refrigerator compartment; a freezer temperature sensing means for sensing a temperature sensed in the freezer compartment; a refrigerator compartment temperature sensing means for sensing temperature in the refrigerator compartment; a control means responsive to the freezer compartment temperature sensing means sensing a temperature above a freezer compartment set point for causing (i) the cooling coil and compressor to start cooling air to a temperature below the freezer compartment set point and (ii) the fan means to start circulating air from the refrigerator and freezer compartments across the cooling coil, the control means continuing to cause the fan means to circulate air over the cooling coil and the compressor to continue supplying coolant fluid to the cooling coil to cool the circulating air until both the freezer compartment temperature sensing means senses a temperature at or below the freezer compartment set point and the refrigerator compartment sensing means senses a temperature at or below a refrigerator compartment set point, whereby the freezer compartment continues to be cooled below the freezer compartment set point until the refrigerator compartment reaches the refrigerator compartment set point.