A heating device including catalytic burning of liquid fuel

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

Patent

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F23C 13/00 (2006.01) F23C 13/02 (2006.01) F23D 14/18 (2006.01)

Patent

CA 2674468

A heating device (100) for combustion of liquid fuels comprises at least one catalytic element (140) for catalytically burning a mixture of fuel and air, a fuel supply means (133) being disposed on an upstream side of said first catalytic element (140) and an air supply means (132) being disposed on an upstream side of said at least one catalytic element (140). A fuel-evaporating device (130) has a substantially axisymmetric shape and an upstream end and a downstream end. The fuel-evaporating device is heated, during operation, by the at least one catalytic element (140), and is supplied with fuel and air from the fuel supply means (133) and the air supply means (132). The heating device also comprises an outer housing (110), for containing said catalytic element (140) and said fuel-evaporating device (130). The fuel -evaporating device (130) is provided with at least one inner inlet pipe (132; 132b) in the generally upstream end thereof. The pipe (132; 132b) is arranged to inject fuel and/or air in a tangential direction into the generally upstream part of the fuel -evaporating device (130) such that a rotational flow is obtained therein. Moreover, the generally upstream end of the fuel- evaporating device (130) is arranged in the vicinity of the at least one catalytic element (140),

L'invention concerne un dispositif de chauffage (100) pour la combustion de combustibles liquides, le dispositif de chauffage comprenant au moins un élément catalytique (140) pour brûler de façon catalytique un mélange de combustible et d'air, des moyens d'alimentation en combustible (133) disposés sur un côté en amont dudit premier élément catalytique (120), et des moyens d'alimentation en air (132) disposés sur un côté en amont desdits éléments catalytiques (140). Un dispositif d'évaporation de combustible (130) a une forme sensiblement axisymétrique et une extrémité en amont et une extrémité en aval. Le dispositif d'évaporation de combustible est chauffé, pendant le fonctionnement, par les éléments catalytiques (140), et est alimenté en combustible et en air par les moyens d'alimentation en combustible (133) et les moyens d'alimentation en air (132). Le dispositif de chauffage comprend également un boîtier externe (110), pour contenir ledit élément catalytique (140) et ledit dispositif d'évaporation de combustible (130). Le dispositif d'évaporation de combustible (130) comporte au moins un tuyau d'entrée interne (132 ; 132b) dans l'extrémité généralement en amont de celui-ci. Le tuyau (132 ; 132b) est disposé pour injecter du combustible et/ou de l'air dans une direction tangentielle dans la partie généralement en amont du dispositif d'évaporation du combustible (130), de telle sorte qu'un écoulement rotatif est obtenu dans celui-ci. De plus, l'extrémité généralement en amont du dispositif d'évaporation de combustible (130) est disposé au voisinage du ou des éléments catalytiques (140).

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