Regulating system for gas burners

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

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F23N 1/02 (2006.01) F23N 5/18 (2006.01) F23N 3/08 (2006.01)

Patent

CA 2334383

Regulating devices for gas burners are used to provide a gas/air mixture for a burner. Regulating devices are also known which have a variable transmission ratio between gas pressure and combustion air pressure or gas flow and combustion air flow. The required measurement of pressure in all known regulating devices is carried out pneumatically. The inventive regulating device has a sensor (19) that generates an electrical or electronic signal (22) and that is arranged between a first line guiding the gas flow and a second line (14) guiding a combustion air flow. The regulating device is also fitted with a summation device (26) that calculates the electrical or electronic signal (22) of the sensor (19) using an auxiliary signal (27). A regulating signal (24) generated from an output signal (30) of the summation device (26) is used to alter the gas flow.

L'invention concerne un système de régulation pour brûleur à gaz. Les systèmes de régulation pour brûleur à gaz servent à fournir un mélange gaz/air à un brûleur. On connaît des systèmes de régulation dans lesquels le rapport de transmission entre la pression du gaz et la pression de l'air de combustion ou entre le flux gazeux et le flux d'air de combustion est variable. Dans tous les systèmes de régulation connus, la mesure de pression nécessaire s'effectue pneumatiquement. Le système de régulation décrit dispose d'un détecteur (19) produisant un signal électrique ou électronique (22), ce détecteur étant disposé entre une première canalisation (10) guidant le flux gazeux, et une deuxième canalisation (14) guidant le flux d'air de combustion. En outre, le système de régulation comporte un système de sommation (26) qui calcule le signal électrique ou électronique (22) du détecteur (19) à l'aide d'un signal auxiliaire (27). Un signal de régulation (24) produit à partir d'un signal de sortie (30) du système de sommation (26) sert à modifier le flux gazeux.

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