Patent ID: 9726116
Date: 2017-08-08
CPC Classifications: B01F,F02M,Y02T

Claim:
1. A gas mixer for mixing together a first gas and a second gas, comprising a multi-part gas housing connectable to a gas feed, which housing comprises: a first, outer gas housing part, with a feed line for the first gas in a longitudinal axis and a feed line for the second gas in a transverse axis; a second, inner gas housing part, which forms an annular space for the second gas and which is inserted into the first gas housing part, the second housing part having a mixing space, into which the first gas and the second gas are introduced so that they are mixed to form a gas mixture, wherein the first gas housing part, the second gas housing part and the annular space are oriented along the longitudinal axis, and the mixing space is oriented cylindrically along the longitudinal axis; and a mixing arrangement having a set of hollow bars is arranged in the mixing space, wherein the hollow space of a hollow bar is fluidically connected at both ends to the annular space, wherein the set of hollow bars extends transversely to the longitudinal axis and transversely to the transverse axis; and at least one hollow bar comprises a plurality of through-openings for the second gas, so that the hollow space is fluidically connected to the cylindrical mixing space, wherein a hollow bar of the set of hollow bars is formed as a flat bar, wherein a narrow side of the flat bar comprises an inflow cross section which has only a local effect on a course of the flow, and a flat side of the flat bar is oriented parallel to the longitudinal axis and transversely to the transverse axis, wherein a narrow, upstream side of the hollow bar comprises an inflow surface formed as a half-rounding, which comprises a flow stagnation point and is free of a through-opening, wherein a flow guide surface, which extends from the narrow, upstream side of the hollow bar to the flat side and merges with the inflow surface, comprises the plurality of through-openings, and a flow separation surface, which proceeds on the flat side of the hollow bar to the flow guide surface, is free of a through-opening.