Arrangement for adjusting the gas supply and the control of an operating pressure to a gas cooking apparatus having a gas-radiation burner mounted below a cooking surface

A cooking assembly which is supplied from a gas source supplying a gas which fluctuates in pressure and changes in type, the cooking assembly comprising:

• a housing;
• a cover plate mounted atop said housing to close said housing and define a continuous cooking surface;
• a radiation-gas burner mounted in said housing below said cover plate;
• said radiation-gas burner having a burner chamber;
• and,
• an arrangement for providing a pressure-fluctuation free supply of said gas and for controlling an operating pressure of an air/gas mixture to said radiation-gas burner, said arrangement including:
• a gas supply conduit connectable to said gas source for receiving said gas;
• a pressure controller mounted in said gas supply conduit for controlling the pressure of said gas to a constant operating pressure of at least 2.5 mbar above atmospheric pressure;
• a control unit connected to said pressure controller for receiving the pressure-controlled gas and for metering said gas to said radiation-gas burner;
• said control unit including a valve block having at least one exchangeable nozzle adapted to the type of gas from said gas source;
• a feed conduit having a clear cross-sectional area and communicating with said burner chamber;
• said feed conduit having an inlet opening adjacent said nozzle;
• blower means for blowing air into said housing to generate an overpressure therein whereby said gas metered by said control unit through said nozzle entrains air to form an air/gas mixture entering said feed conduit for combustion in said burner;
• an insert mounted in said feed conduit for reducing said cross-sectional area of said feed conduit;
• said insert being selected so as to reduce said cross-sectional area to enable said radiation-gas burner to operate at a predetermined efficiency irrespective of the fluctuations in said pressure of said gas and said changes in type of said gas;
• a carrier plate;
• and,
• said pressure controller, said control unit and said gas supply conduit all being mounted in common on said carrier plate to form a single component assembly unit mounted in said housing.