Schott Glas

Christof Koster

Martin Taplan

Herwig Scheidler

Michael Kahlke

Rainer Hasse

Unit with at least one plate made of a material, which material is permeable to thermal radiation, such as glass ceramic, glass, ceramic or a similar material, as a surface for cooking, frying and/or keeping warm. The unit with at least one plate is on a frame construction with different types of adjustable heat sources distributed underneath and on the plate. Some of the heat sources are distributed under the plate in the form of radiant burners and act indirectly by radiation through the plate. Other heat sources are located above the level of the plate in the form of open atmospheric or atmospheric pressure gas burners and transmit heat directly by producing open flames. The respective heat sources correspond to the cooking, frying and/or warming positions. Whereby, the at least one height-equalizing, plate-shaped, modular top part, which top part sits on a portion of the frame on which the plate lies, can be securely fastened to the frame of the unit, and also has heat sources distributed under its plate and acting indirectly by radiation through the plate, permits all the cooking, frying and/or warming positions to lie in a plane of equal height. The plane of equal height is defined by the height of the open, atmospheric gas burners located above the level of the plate or by their corresponding pot grates. The plates form two planes parallel to one another and the height of which plates is different.

Cooking unit, such as a stove, for cooking food

The invention is directed to an arrangement for adjusting a pressure-fluctuation free supply of gas and for controlling an operating pressure of an air/gas mixture to a radiation-gas burner of a gas cooking apparatus. The radiation-gas burner has a burner chamber and is mounted in a housing below a cover plate. The arrangement includes a gas supply conduit connectable to a gas source for receiving the gas and a pressure controller is mounted in the gas supply conduit for controlling the pressure of the gas to a constant operating pressure of at least 2.5 mbar above atmospheric pressure. A control unit is connected to the pressure controller for receiving the pressure-controlled gas and for metering the gas to the radiation-gas burner. The control unit includes a valve block having at least one exchangeable nozzle adapted to the type of gas from the gas source and a feed conduit has a clear cross-sectional area and communicates with the burner chamber. The feed conduit has an inlet opening adjacent the nozzle. A blower blows air into the apparatus to generate an overpressure whereby the gas metered by the control unit through the nozzle entrains air to form an air/gas mixture entering the feed conduit. An insert is mounted in the feed conduit for reducing the cross-sectional area of the feed conduit. The insert is selected so as to reduce the cross-sectional area to enable the radiation-gas burner to operate at a predetermined efficiency irrespective of the fluctuations in the pressure of the gas and the changes in type of the gas.

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Mullheim an der Ruhr, Germany

Christof Koster