US 4,541,407 A · Cooking station for gas ranges

Abstract

A cooking station for gas ranges whose burner works with super-stoichiometric combustion air premixing. The burner head arranged in a burner tray is connected with a mixing pipe via a ceramic insulating ring. Between the burner head bottom and the burner head lid with the flat topside, we have two perforated flame opening rings which are arranged concentrically with respect to the burner axis, which are resistant to heat and which are resistant to oxidizing and reducing atmospheres. The perforation of the inner flame-opening ring is so dimensioned that the flames cannot backfire. Below the burner tray there is arranged a reflector. The cooking station can be covered with a glass ceramics plate. The invention achieves stable flame performance, perfect combustion, and waste gas poor in harmful substances at nominal load and at small adjustment heat load within a vast utilization field of gases with differing Wobbe indexes as well as a start-up cooking efficiency improvement compared to known burners.

Claims24

Dependent claims

A cooking station for gas ranges, whose burner is operating with super-stoichiometric combustion air premixing, comprising:

a burner tray;
a burner head arranged in said burner tray concentric with respect to a burner axis;
a mixing pipe means operatively connected with the burner head for supplying a fuel gas and combustion air mixture to said burner head;
gas nozzle means mounted at the inlet of said mixing pipe for discharging a fuel gas jet into the inlet of said mixing pipe to entrain a super-stoichiometric air volume;
a ceramic insulating ring providing the connection between said mixing pipe and said burner head;
said burner head including inner and outer perforated flame opening rings mounted concentrically with respect to each other and to said burner axis and constructed of heatresistant and oxidizing resistant material, a burner head bottom connecting one end of said rings, and a burner head lid having a flat topside and connecting the other end of said rings;
and
the perforations of said inner flame opening ring being so dimensioned that the flames between said rings cannot backfire through the perforations of said inner flame opening ring.

5 more elements

A cooking station for gas ranges whose burner is operating with super-stoichiometric combustion air premixing, comprising:

a burner tray;
a radiant burner head arranged in said burner tray concentric with respect to a burner axis;
said burner tray being provided on its side opposite from said burner head with a coating having a lower radiation emission than the material of which the burner tray is made;
a mixing pipe means operatively connected with the burner head for supplying all of the fuel gas and combustion air mixture to said burner head;
gas nozzle means mounted at the inlet of said mixing pipe for discharging a fuel gas jet into the inlet of said mixing pipe to entrain a super stoichiometric air volume;
said burner tray comprising a generally truncated cone-shaped first reflector of corrosion-proof sheet metal being mounted around said radiant burner head so that heat radiated radially outward and downward from said radiant burner head will be reflected upward;
an additional generally truncated cone-shaped second reflector spaced below the entirety of said burner tray for upwardly reflecting substantially all heat radiantly emitted downwardly from said first reflector;
and
sealing means, including said reflectors for preventing flow of secondary air and preventing heat transfer by convection.

6 more elements

Dependencies are inferred from the claim text.

Cooking station for gas ranges

Life of this patent

Cooking station for gas ranges

Life of this patent

Abstract

Claims24