Aspirator fan

Details Aspirator fan Aspirator fan

1991-07-16

1992-10-06

Smith, Leonard E.

Pumps

Motor driven

Motor within rotary pumping member

4174231, 4174237, 41742314, 416133, 416140, 416204R, F04D 2506, F04D 2942

Patent

active

051526760

ABSTRACT:
An aspirator fan is disclosed, which comprises a rotating shaft press-fitted in an impeller, a support member having an urging means and receiving one end of the rotating shaft for supporting the rotating shaft as a cantilever, and a shaft abutment member disposed in a casing and having a shaft abutment portion against which the opposite end of the rotating shaft is urged by the force of the resilient means. The aspirator fan is free of an alignment adjustment between the rotating shaft and bearings which is required in the casing of conventional aspirator fans. The shaft abutment member is structurally separated from the casing, so that even when the casing is deformed, a deformation of the casing has no effect on the rotation of the rotating shaft. The aspirator fan can, therefore, be operable with an improved reliability.

REFERENCES:
patent: 4128364 (1978-12-01), Papst
patent: 4773828 (1988-09-01), Hagiwara

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