Patent ID: 7547134

Claim:
An arrangement for mixing fluid streams in a duct ( 1 ), said arrangement comprising: at least one mixing device ( 3 ) having front side and back side ( 3 ′) and positioned within said duct ( 1 ) through which a first major stream ( 2 ) travels, the at least one mixing device ( 3 ) determining a total cross-sectional area which is significantly lower than that of the duct ( 1 ) in which the at least one mixing device ( 3 ) is positioned within the duct ( 1 ) so that the first major stream ( 2 ) forms with the front side of the at least one mixing device ( 3 ) an incidence angle (α) of between 10° and 80°, wherein the at least one mixing device ( 3 ) is in the form of a solid plate comprising a main solid plate body ( 10 ) having a circular or elliptical configuration defining a circumferential arcuate edge ( 20 ) and one or more protrusions ( 9 , 11 ) extending outward from the arcuate edge, the one or more protrusions ( 9 , 11 ) having a triangular configuration and being located in the same plane defined by the cross section of the main solid plate body.