Electrical radiant heater for heating heating surfaces
AssigneeE.G.O. Elektro-Gerate Blanc u. Fischer
InventorBernhard Mikschl
Life of this patent
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Abstract
An electric radiant heater (11) for heating a glass ceramic cooking surface (12) contains a dish-shaped insulator (14), to whose inner bottom surface (18) are fixed heater coils (20). The heater coils have an oval cross-section and are pressed by their narrow sides into surface (18) and fixed. The fixing pressing in takes place during the moulding of the moist insulator (14), made from fibrous material and by means of a male mould receiving the heater coils in slots.
Claims15
Electric radiant heater for heating heating surfaces, comprising an insulator made from electrically and thermally insulating material, at least one heater coil having numerous spaced turns of electrical resistance wire being partly embedded in a surface of said insulator, the heater coil having a substantially oval coil cross-section having a cross-sectional major and a minor axis and with two facing sides each having a respective cross-sectional major and minor curvature, a portion of the heater coil being embedded at the heater coil side of major curvature whereby major axis of the coil cross-section is directed away from said surface of the insulator.
Dependencies are inferred from the claim text.