The invention relates to a mixing device for premixing combustion air and gas, having a gas regulating device and a gas outlet and a nozzle, wherein a gas inlet is provided on the nozzle or on a bridging element disposed on the nozzle, and the gas path from the gas outlet to the gas inlet is sealed
The invention relates to a mixing device for premixing combustion air and gas, having a gas regulating device and a gas outlet and a nozzle, wherein a gas inlet is provided on the nozzle or on a bridging element disposed on the nozzle, and the gas path from the gas outlet to the gas inlet is sealed off by a gasket extending from the gas outlet to the gas inlet.
대표청구항▼
1. A mixing device for premixing combustion air and gas, comprising a gas regulating device or a gas valve for gas introduction having a gas outlet and a nozzle, whereina gas inlet is provided on the nozzle or on a bridging element arranged on the nozzle,a gas path from the gas outlet to the gas inl
1. A mixing device for premixing combustion air and gas, comprising a gas regulating device or a gas valve for gas introduction having a gas outlet and a nozzle, whereina gas inlet is provided on the nozzle or on a bridging element arranged on the nozzle,a gas path from the gas outlet to the gas inlet is sealed off by a gasket extending from the gas outlet to the gas inlet,a gas inlet connector is provided on the nozzle or the bridging element arranged on the nozzle, and the gasket forms a tight seal on an outside of the gas inlet connector over a predetermined axial length;a gas outlet connector is provided on the gas regulating device or the gas valve and is enclosed externally at least in portions by the gasket;the gas outlet connector is releasably attached to the gas regulating device or the gas valve and the gas inlet connector is releasably attached to the nozzle or the bridging element;at least an outwardly projecting portion of each of the gas outlet connector and the gas inlet connector is provided with lamellae which corresponding recesses of the gasket engage to form the tight seal between the gasket and the respective connector;the gas outlet connector and the gas inlet connector are arranged in such a way that a respective mutually facing axial outer edge thereof are at a distance between 0.5 and 3 mm; andthe gasket includes a recess formed in an inner wall of the gasket, the recess fixes a shutter located in the recess and the gas inlet connector. 2. The mixing device according to claim 1, wherein the gas inlet connector projects outwards in an axial direction, and the gas outlet connector and the gas inlet connector are each configured to be substantially tubular in shape with substantially identical diameters. 3. The mixing device according to claim 1, wherein the gasket can be slid onto respective outwardly projecting portions of the gas outlet connector and the gas inlet connector. 4. The mixing device according to claim 1, wherein at least axial end portions of the gasket comprise at least two mutually axially spaced contact faces. 5. The mixing device according to claim 1, wherein an axial length of the gasket is greater than the length to be bridged between the gas regulating device or the gas valve and the nozzle or bridging element, in such a way that the gasket forms a bulge. 6. The mixing device according to claim 1, wherein at least one of axial end portions of the gasket lies against the gas regulating device or the gas valve and/or the nozzle or the bridging element. 7. The mixing device according to claim 1, wherein the gasket is an elastomeric component arranged in the gas path from the gas outlet to the nozzle or the bridging element. 8. The mixing device according to claim 1, wherein the gasket comprises at least one projection which fixes the shutter in the recess and in the gas inlet connector. 9. The mixing device according to claim 1, wherein the gas regulating device or the gas valve and the nozzle are held on a holding device in such a way that the gasket is arranged so as to be unaffected by external forces. 10. A firing device, comprising a gas burner having a combustion chamber, comprising a fan, and comprising the mixing device according to claim 1, wherein the mixture of combustion air and gas supplied by the mixing device can be introduced to the combustion chamber of the gas burner by means of the fan. 11. The mixing device according to claim 1, wherein the gasket directly contacts the outside surface of the gas inlet connector and directly contacts an outside surface of the gas outlet connector. 12. The mixing device according to claim 11, wherein the gasket is a single piece component. 13. The mixing device according to claim 1, wherein the lamellae includes at least two lamellae. 14. The mixing device according to claim 1, wherein the gasket is a single piece component which extends the entire distance between the gas inlet connector and the gas outlet connector. 15. The mixing device according to claim 1, wherein a threaded connection is not used to connect the gasket to the gas inlet connector or to the gas outlet connector.
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