Worgas Bruciatori S.r.l.

Desa International, Inc.

Gunther Berthold

Massimo Gilioli

Giuseppe Fogliani

Massimo Dotti

John S Thomas

Stephanus Wijkmans

Renzo Vecchi

Wenzel Mach

A method of combustion of a gaseous fuel in a heating appliance ( ) provided with at least one burner ( ), comprising mixing said gaseous fuel with a preestablished quantity of air to obtain an air-fuel mixture, supplying said mixture to the body of said at least one burner ( ), which is provided with a diffuser ( ) on which openings ( ) are made through which said mixture passes, causing the combustion of said mixture in order to generate flames ( ), the method further comprises irradiating heat towards said flames ( ) and a region directly surrounding said flames ( ). A heating appliance ( ) provided with at least one burner ( ) fed with a mixture of gaseous fuel and air, said at least one burner ( ) being provided with a diffuser ( ) having openings ( ) through which said mixture passes and with means ( ) to cause the combustion of said mixture and the formation of flames ( ), the heating appliance further comprises heat irradiating means ( ) which are capable of irradiating heat towards said flames ( ) and a region directly surrounding said flames ( ).

Method of reducing CO and NOx emissions in a heating appliance and a respective appliance

An artificial gas log set which simulates in a very realistic fashion a log fire in a fireplace. The artificial log set comprises a log, a burner tube having ports for creating a yellow flame that is in close proximity to the log and a second set of ports for creating a blue flame which is positioned between the yellow flame and the log. The blue flame impinges on the log and acts as a separator or curtain that prevents impingement by the yellow flame on the log. This prevents the creation of unwanted and dangerous levels of emissions such as oxides of carbon and nitrogen. An alternative embodiment replaces the blue flame and its ports with duct work and exhaust gases. The exhaust gases act as a separator between the log and the yellow flame. The result is a realistic looking, simulated wood burning fireplace which may be safely used in an unvented environment.

Method and apparatus for preventing impingement of yellow flames on a

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Modena, Italy

Gunther Berthold