Reversible mixing impeller

Details Reversible mixing impeller Reversible mixing impeller

1991-10-04

1994-05-31

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Cupped reaction surface normal to rotation plane

Torque converters

416243, 366270, 366330, B01F 304

Patent

active

053164431

ABSTRACT:
Liquid mixing impellers particularly designed for the chemical processing industry provide a generally axial flow when rotated in a first direction of rotation and provide a generally radial flow when rotated in the opposite direction of rotation. The blades are formed of sheet material with an edge which leads in the first direction of rotation being defined by a portion of the blade which is folded and turned in a chordwise sense through a limited extent back upon itself. The folded back leading edge forms a rearwardly facing concavity which faces the blade trailing edge. The power number in the radial flow rotation direction substantially exceeds the power number in the axial flow rotation direction.

REFERENCES:
patent: 1186612 (1916-08-01), Taylor
patent: 1372834 (1921-03-01), Schmelzer
patent: 4305673 (1981-12-01), Herbst
patent: 4674887 (1987-06-01), Lucke et al.
patent: 5198156 (1993-03-01), Middleton

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