Method and appliance for controlling primary air fraction of atmospheric gas burner

摘要

The primary air is sucked by the injector action of the gas current into a mixer chamber, consisting of at least two separated chambers (2,5) each possessing a gas-inlet (3,6) and at least one gas-outlet (4,7). The gas outlets open parallel with each other into the mixer chamber of at least one gas burner. At least one gas outlet is in the form of a nozzle. At least one chamber can be regulated in its flow. An annular chamber (5) coaxially encloses a tubular chamber (2).