Burner head and premix burner for the combustion of a gas mixture of hydrogen and air

Abstract

The invention relates to a premix burner (10) and a burner head (11) for this premix burner (10) for the combustion of a gas mixture of fuel and air, which comprises at least predominantly hydrogen. The burner head (11) has an inlet opening (17), a flame arrestor (18), an outlet opening (22), and a flame retainer (21). A flow (16) of the gas mixture can be introduced through the inlet opening (17) into a flow channel (20) formed in the burner head (11). The flame arrestor (18) is arranged such that it (completely) occupies the cross-section (19) of the flow channel (20) in the burner head (11). The flow (16) can be discharged from the flow channel (20) of the burner head (11) through the outlet opening (22) downstream to the inlet opening (17) and in particular downstream to the flame barrier (18) into a flame zone (23).A special feature of the present invention is the flame holder (21), which is arranged in or on the outlet opening (22) occupying the cross-section (19) of the flow channel (20) and is a rigid, fiber- and wire-free body (26). Due to the rigid and wire-free design of the flame holder (21), its service life during hydrogen operation can be significantly extended.

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