Heater, particularly for kitchen appliances
AssigneeE.G.O. Elektro-Geratebau GmbH
InventorJoachim Haazendonk
Life of this patent
Estimating the term…
Abstract
A heater (1) particularly usable as a radiant heater for electric cookers is described, which has a insulating substrate (2) of microporous thermal insulation material and at least one electric heating conductor (20) in the form of an upright, corrugated flat strip fixed to the top of the insulating substrate. The top side of the insulating substrate is structured in honeycomb-like manner and has a network of raised portions (10) between which are located roughly cylindrical depressions (11). With small-surface fixing portions the heating conductor positively engages in the raised portions (10) and is held in freely suspended manner over the insulating substrate in the vicinity of the depressions (11).
Claims29
A heater, comprising:
- an insulating substrate having a top side with a profile, the profile having raised portions and depressions distributed in a network over the top side of the insulating substrate, at least one of the raised portions and the depressions intersecting in non-linear directions;
- and
- at least one electric heating conductor fixed to the top side and engaging the raised portions such that a fixation of the heating conductor to the substrate is brought about at a plurality of fixing points arranged in specific intervals alone the heating conductor exclusively by the engagement between the heating conductor and the raised portions.
An insulating substrate for a heater, comprising:
- a top side having a profile, the profile having raised portions and depressions being distributed in a network over the top side, at least one of the raised portions and the depressions intersecting in non-linear directions.
A heater, comprising:
- an insulating substrate having a top side with a profile, the profile having raised portions and depressions distributed in a network over the top side of the insulating substrate, at least one of the raised portions and the depressions intersecting in non-linear directions;
- at least one electric heating conductor fixed to the top side and engaging the raised portions such that a fixation of the heating conductor to the substrate is brought about by the engagement between the heating conductor and the raised portions;
- wherein the network is formed by the depressions running in different directions along the top side and meeting at intersections;
- and
- wherein raised portions in the form of studs are formed between the depressions.
Dependencies are inferred from the claim text.