Tangential blower

Claim 1

A tangential blower comprising: a rotor mounted for rotation about an axis and having a plurality of blades with edges extending parallel to said axis; a spiral-shaped baffle plate mounted around said rotor, said spiral-shaped baffle plate extending in its spiral shape into a planar portion that is near a region of a high-pressure side connection, after the closest approach of said spiral-shaped baffle plate to said rotor near a low-pressure side, said spiral-shaped baffle plate extending away from said rotor bending in a spiral toward said planar portion; two end plates of a vortex-forming system which interconnect said low-pressure side and said high-pressure side; at least two guidewalls having edges extending transversely to the direction of flow and extending straight over their entire lengths and being parallel to said blade edges of said rotor, said guidewalls forming passages converging toward said rotor and being open at both ends, said baffle plate having, in a region of said pressure connection, an air-deflecting member which extends parallel to said rotor axis for the distance between said end plates, each baffle-plate inlet edge being parallel to the blade edges of said rotor and having steplike offsets between the said plates; the air outlet slots and a plurality of guidewalls having air outlet slots so divided in the direction of said axis as to be staggered in relation to one another in a steplike arrangement by a 0.3 to 0.7 blade pitch t.