Stoves and furnaces – Stoves – Cooking
Patent
1997-09-15
2000-06-20
Lazarus, Ira S.
Stoves and furnaces
Stoves
Cooking
126 39E, 126 39K, 126 39N, 126 39R, 239552, F24C 300, B05B 114
Patent
active
060765178
ABSTRACT:
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.
REFERENCES:
patent: 1584210 (1926-05-01), Brunow
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patent: 4083355 (1978-04-01), Schwank
patent: 4201184 (1980-05-01), Scheidler et al.
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patent: 4951646 (1990-08-01), Diekmann et al.
patent: 5509403 (1996-04-01), Kahlke et al.
patent: 5937846 (1999-08-01), Martin et al.
Hasse Rainer
Kahlke Michael
Koster Christof
Lazarus Ira S.
Lee David
Ottesen Walter
Schott Glas
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