Elliptical vortex wall for transverse fans

Details Elliptical vortex wall for transverse fans Elliptical vortex wall for transverse fans

1996-06-06

1997-08-12

Verdier, Christopher

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Cross flow runner

415119, F04D 500

Patent

active

056558740

ABSTRACT:
Changing the tip of the vortex wall to an ellipse can increase flow performance by having the short side of the ellipse define a portion of the converging diverging section while quieter operation can be achieved by having the long side of the ellipse define a portion of the converging diverging section with no other changes. A combination of increased flow and reduced noise can be achieved by combining changing the clearance between the vortex wall and the impeller with an elliptical surface as well as by reorienting the elliptical surface.

REFERENCES:
patent: 3232522 (1966-02-01), Laing
patent: 3695775 (1972-10-01), Zenkner
patent: 5248224 (1993-09-01), Amr
patent: 5449271 (1995-09-01), Bushnell et al.

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