Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1982-07-26
1984-10-30
Mayewsky, Volodymyr Y.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
174138J, 219347, 219455, 219460, 219467, 219532, 219536, 219550, H05B 368
Patent
active
044801769
ABSTRACT:
An insulated electric heating element particularly suitable for use in a hot plate or electric stove is disclosed. The insulated electric heating element includes an insulating member comprising a layer of ceramic insulation surrounding the sides and bottom of the housing that encloses the resistive heating element is disclosed. The ceramic insulation is mounted in the bottom and extends up the sides of a cross-sectionally U-shaped channel. The legs of the channel are formed so as to adhere to the sides of the heating element housing. The ceramic insulation reduces the heat radiated downwardly and sidewardly and, correspondingly, increases the heat radiation upwardly by the electric heating element. The upper edge of the channel legs lie below the upper surface of the heating element housing to avoid creating a gap between the bottom of a vessel (e.g., pot) to be heated and the upper surface of the heating element housing. Further, preferably, the upper surface of the ceramic insulation is covered with a layer of reflective material that reflects heat, radiated from the heating element housing toward the layer of ceramic insulation, back toward the heating element housing.
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