E.g.o. Elektro Gerate Blanc U. Fischer

E.g.o. Elektro-geraetebau Gmbh

E.g.o. Elektro-gerate Blanc Und Fischer Gmbh & Co. Kg

Franz Bogdanski

Willi Essig

Juergen Horn

Guenter Fettig

Robert Kicherer

Eugen Wilde

Martin Gross

Lutz Ose

Hans Mohr

Siegbert Berger

Werner Renz

Werner Koegel

Peter Stupp

Willi Kralik

A contact heat-transferring electric hotplate (11) is provided, which is made from nonoxidic ceramic, particularly silicon nitride. Its very thin hotplate body (14) in the form of a disk is installed in self-supporting manner in a hob plate, e.g. by bonding, and has an extremely flat surface or which is adapted to the cooking vessel shape, which creates such a small gap with respect to said vessel that a coupling is possible even with higher power densities with only a temperature difference of a few degrees. The heating means (17) is also in contact with or directly connected to the underside of the hotplate body (14).

Contact heat-transferring cooking system with an electric hotplate

A radiant cooking unit comprises a heat insulating material forming a heating element carrier to which electrical heating elements are secured. It is surrounded by a ring-shaped bordering element of a heat insulating material relatively rigid in design. Both moldings are molded together by a ram. In another aspect the outer ring is divided into several ring sectors. A hoop of flat material clasps this ring-shaped bordering element on all sides, the latter being configured as a single-turn induction coil for a pot sensing system and simultaneously clamping the unit together.

Radiant cooking unit

For producing an electric radiant heater a thin heating resistance material strip is placed upright on an insulator. It has foot portions, which are embedded in the heating conductor material. The foot portions are only connected by thin connecting webs to the heating area and are differently shaped and/or oriented to the corrugated heating conductor strip.

Electric radiant heater and method for its manufacture

An inductive hot point heating system is regulated or controlled by an oscillation packet control, which uses a symmetrical pattern of complete mains half-waves. The switching takes place in the zero passage and is symmetrical in such a way that there is no d.c. voltage component in the mains. It also contains an optical temperature monitoring of the plate covering the cooking point with an infrared photosensor, which determines the temperature on the basis of its predetermined spectral range.

Inductive cooking point heating system

A flow heater (11) has a stainless steel tube (1Z), around which is externally placed a polyimide (KAPTON) insulating film (14) with an overlap (15). Under pretension is wound onto the same a metallic resistance material heating tape (17), so that the resulting elasticity reserve, also at operating temperature, ensures a good application of the heating tape to the film. Temperature switching devices for preventing excess temperatures or running dry can be fitted in the overlap area (15).

Electrical heater for media, particularly flow heater

An inductive cooker heating system has a high frequency-supplied induction coil. The thickness or wire thickness of the single conductors for a conventional frequency between 20 and 30 kHz (25 kHz), is approximately 0.2 mm. This limited wire thickness has proved to be particularly low-loss. The arrangement of the induction cooking point comprises a thermal insulation placed below a plate for receiving cooking vessels, a shield with branched, grounded line structures and a disk-like induction coil, which is back-connected on the underside by a ferrite yoke plate.

Induction cooker heating system

An induction based point heating system for cooking utensils or the like contains induction coils positioned below a plate, e.g. a glass ceramic plate. It is constructed as a cohesive component and includes induction generating means and the associated power, frequency generation or control electronics for the induction coils. The component is in the form of a flat plate or tray, which can be pressed from below against the plate. The induction coil is constructed as a flat, disk-like coil, which on its side remote from the plate is adjacent to a magnetic yoke such as a preferably segmented ferrite layer.

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Oberderdingen, Germany

Franz Bogdanski