Blower with improved impeller vanes

Details Blower with improved impeller vanes Blower with improved impeller vanes

1992-02-19

1993-11-02

Look, Edward K.

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

416229R, 416231R, F04D 2966

Patent

active

052579026

ABSTRACT:
A blower includes a plurality of rotatable impeller vanes operable to impel air. The impeller vanes create an air pressure differential thereacross when rotated, and each of the impeller vanes has a porous central portion made of sintered resin material. The porous central portion has a plurality of pores therein which permit a portion of air to pass through the porous central portion from a relatively high air pressure side to a relatively low air pressure side of the impeller vanes. Each of the impeller vanes also has a non-porous portion surrounding the porous central portion. The non-porous portion is made of a solid resin material which prevents air from passing therethrough.

REFERENCES:
patent: D265681 (1982-08-01), Kan
patent: 2161182 (1939-06-01), Massey
patent: 2509376 (1950-05-01), Trask
patent: 3749520 (1973-07-01), Bandukwalla
patent: 3779338 (1973-12-01), Hayden et al.
patent: 3992491 (1976-11-01), Ihrig et al.
patent: 4746271 (1988-05-01), Wright
patent: 4869644 (1989-09-01), Takigawa

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