COMBINATION STRUCTURE OF CASING AND IMPELLER OF CROSS FLOW FAN

摘要

PROBLEM TO BE SOLVED: To provide the combination structure of the casing and the impeller of a cross fan to improve gas quantity-static pressure performance by studying the blade outer peripheral angle of an impeller and the blow outlet angle of a casing, which match with a casing shape, and reduce a consumption power and the generation of noise.;SOLUTION: The combination structure of the casing and the impeller of this cross fan is a high pressure type cross flow fan formed such that the winding angle θ3 of a scroll part 2 is increased to 140-185°. The casing 1 of the cross fan has an expansion rate set to 9-10.5° and the blow outlet angle θ4 of the casing 1 set to 0-10, and the blade outer peripheral angle θ1 of an impeller 4 set to 21-22°.;COPYRIGHT: (C)2001,JPO