초록 ▼

The method and apparatus sucks the entire combustion air volume in laterally with respect to the direction of flow of the air current with the help of the impulse of a fuel gas jet out of the air current into a mixing pipe and the formation of a differential pressure between the mixing pipe input an

The method and apparatus sucks the entire combustion air volume in laterally with respect to the direction of flow of the air current with the help of the impulse of a fuel gas jet out of the air current into a mixing pipe and the formation of a differential pressure between the mixing pipe input and the waste gas output into the air current is prevented with the help of current guidance sheet metal pieces. The burner is arranged in a shaft-like housing, the fuel gas nozzle and the lower part of mixing pipe are surrounded by a pot-shaped current guidance sheet metal piece. A cylindrical current guidance sheet metal piece adjoins the cooled burner plate. The burner which, for example, can be used in dryers, for heating room air with so-called make-up air units and in gas water heaters, operates completely independently of the air flowing around it in a wide heat load range, without any change in the air coefficient. Because of the super-stoichiometric premixing of the burning gas with the air, the NOx content of the waste gas is extraordinarily small.

대표청구항 ▼

A method for operating a gas burner having at least one fuel gas nozzle, at least one mixing pipe, and a burner plate, all serially arranged in a air duct, formed as a tubular housing, said method comprising the steps of: directing a fuel gas jet from the nozzle into the mixing pipe inlet so as to e

A method for operating a gas burner having at least one fuel gas nozzle, at least one mixing pipe, and a burner plate, all serially arranged in a air duct, formed as a tubular housing, said method comprising the steps of: directing a fuel gas jet from the nozzle into the mixing pipe inlet so as to entrain ambient air into the mixing pipe for supplying combustion air thereto by the impulse effect of the gas jet; guiding an air current substantially in one flow direction through the air duct so as to expose the gas burner to the air current; diverting, at a point downstream with respect to the mixing pipe inlet, from the air current a combustion air volume larger than the air volume needed for complete combustion of the fuel gas, directing the diverted air volume laterally with respect to the flow direction of the air current and sucking the diverted air volume into the mixing pipe inlet, and the diverting, directing and sucking steps all being provided only by the impulse effect of the gas jet; providing a combustion gas by mixing in the mixing pipe the diverted air volume with the fuel gas from the nozzle; supplying the combustion gas to and passing it through passages in the burner plate; generating a flame zone immediately downstream of the burner plate, with the flames in the flame zone providing waste gases of combustion for heating the air current; combining and mixing the waste gases of combustion downstream of the flame zone with the remaining portion of the air current flowing through the duct; and selecting the profiles of the air current flowing around the burner through the duct so that the pressure adjacent the mixing pipe inlet and the pressure adjacent the waste gas outlet downstream of the flame zone are substantially equal throughout a wide range of flow of the air current.