Burner method and apparatus having low emissions

F - Mech Eng,Light,Heat,Weapons – 23 – D

Patent

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Details

F23D 14/62 (2006.01) F23D 14/28 (2006.01) F23D 14/38 (2006.01) F23D 14/48 (2006.01)

Patent

CA 2192372

A low NOx gas burner for heating objects having a supply of gas under pressure (30) which is to be mixed to achieve a combustible mixture, gas flow line (32) connecting to said burner to said supply, a burner means (34) for mixing air with said fluid fuel to achieve said combustible mixture, characterized by said burner means includes one or more jet forming means for issuing one or more jets of said gas having a given cross-sectional area and sweeping said one or more jets of gas in ambient air downstream of said burner means to mix air with said gas and achieve said combustible mixture a distance (D) spaced from any physical structure of said burner means whereby a flame front (FF) of burning combustible mixture has a broad shape and is spaced a predetermined distance from said burner.

L'invention concerne un brûleur à gaz à faibles émissions de NOx permettant le chauffage d'objets et comportant une alimentation en gaz sous pression (30) qui doit être mélangé pour obtenir un mélange combustible, une canalisation d'écoulement de gaz (32) reliant ledit brûleur à ladite alimentation, et un élément brûleur (34) pour mélanger l'air avec ledit combustible fluide en vue d'obtenir ledit mélange combustible. Ce brûleur est caractérisé en ce que ledit élément brûleur comporte un ou plusieurs organes de formation de jets pour émettre un ou plusieurs jets dudit gaz présentant une surface sectionnelle donnée et pour balayer lesdits jets de gaz dans l'air ambiant, en aval dudit élément brûleur, en vue de mélanger l'air avec ledit gaz et d'obtenir ledit mélange combustible à distance (D) de toute structure physique dudit élément brûleur, le front de flamme (FF) du mélange combustible en cours de combustion présentant ainsi une forme large et étant espacé d'une distance prédéterminée dudit brûleur.

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