Heat sensing apparatus for an electric range automatic surface unit control
First Claim
1. Heat sensing apparatus for an automatic surface unit control of an electric range comprising:
- a housing having an upper end portion adapted for contact with the bottom of a cooking utensil when placed on a surface unit;
housing support means for holding the housing within the surface unit and for biasing it upwardly to assure contact of said upper end portion with the utensil bottom;
said housing upper end portion comprising a first utensil contact layer of low thermal mass, heat conductive material, a second layer of electrically insulative, heat conductive material secured to the underside of the first contact layer, and a third layer of electrically conductive, heat conductive material secured to the underside of the second insulative layer;
and heat responsive means attached to said third layer for sensing utensil heat as transmitted through said upper end portion and for providing an electrical signal representative thereof to an automatic surface unit control.
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Accused Products
Abstract
An improved heat sensing apparatus for an electric range automatic surface unit control in which the heat sensor housing is supported within the surface unit by an upwardly biased pivot arm. The upper portion of the sensing apparatus comprises a first utensil contacting layer of a low thermal mass, heat conductive material, a second layer of electrically insulative heat conductive material secured to the underside of the first contact layer, and a third layer of electrically conductive, heat conductive material secured to the underside of the second layer. A thermistor or thermocouple heat sensor is attached to the third layer to provide an electrical signal representative of the utensil temperature to the surface unit temperature controls.
74 Citations
9 Claims
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1. Heat sensing apparatus for an automatic surface unit control of an electric range comprising:
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a housing having an upper end portion adapted for contact with the bottom of a cooking utensil when placed on a surface unit; housing support means for holding the housing within the surface unit and for biasing it upwardly to assure contact of said upper end portion with the utensil bottom; said housing upper end portion comprising a first utensil contact layer of low thermal mass, heat conductive material, a second layer of electrically insulative, heat conductive material secured to the underside of the first contact layer, and a third layer of electrically conductive, heat conductive material secured to the underside of the second insulative layer; and heat responsive means attached to said third layer for sensing utensil heat as transmitted through said upper end portion and for providing an electrical signal representative thereof to an automatic surface unit control. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification