Apparatus and method for non-contact detection and inductive hea

Details Apparatus and method for non-contact detection and inductive hea Apparatus and method for non-contact detection and inductive hea

1997-05-16

1999-10-19

Walberg, Teresa

Electric heating

Inductive heating

With heat exchange

219620, H05B 612

Patent

active

059683988

ABSTRACT:
The present invention relates generally to inductive heating, and more particularly to an apparatus and method for non-contact detection and inductive heating of heat retentive food server warming plates used in institutional food service. The invention provides a non-contact detection and control circuit for an inductive heating apparatus for heating an inductively reactive heat radiating element built into a warming plate. The warming plate employed by the invention has an integral inductively reactive heat radiating element that is brought to a desired heating temperature such as 450.degree. F. In a preferred embodiment, the apparatus is configured like a conventional industrial cook stove and surface. Underneath the surface is a magnetic inductive coil controlled by the invention for inductively heating a reactive ferromagnetic heat radiating element that is placed on the surface.

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