Patent ID: 8512035
Filing Date: 2013-08-20
Classification: F23D

Abstract:
1. A mixing device for mixing gas and combustion air for a gas burner, the mixing device having a housing that defines a combustion air inlet, a gas inlet, and an outlet, the mixing device comprising: a venturi which serves to mix the combustion air and the gas, wherein the venturi includes a contraction section, a mixing section and a diffuser section; and a guide device positioned inside the venture, the guide device divides combustion air which enters the mixing device via the combustion air inlet of the housing into a primary flow and a secondary flow, wherein the combustion air of the primary flow, issuing from the combustion air inlet of the housing, is fed to the mixing section via the contraction section and is mixed with the gas to form a first mixture, and wherein the combustion air of the secondary flow, issuing from the combustion air inlet of the housing, is mixed downstream of the mixing section in the region of the diffuser section with the mixture of the gas and the combustion air of the primary flow to form a second mixture.