Method and apparatus for feeding a gas burner with a mixture

摘要

To reduce the emission of harmful substances from a burner (1) which is fed with a mixture of fuel and combustion air, waste gas from the burner (1) is also admixed to this mixture. If this burner also comprises a blower (2 and 9) which conveys the combustion air to the mixture chamber, this blower, or an independent separate blower (10), can be used to draw in the waste gas. In order to draw in the waste gas, it is however also possible to use the sucking action of a nozzle-diffuser system which is formed by mixing chambers (11, 6) of the burner (1) which are arranged one after the other and are interconnected, for example via a Venturi tube (12). <IMAGE>