Advance diffuser apparatus for a blower having a large impeller

Details Advance diffuser apparatus for a blower having a large impeller Advance diffuser apparatus for a blower having a large impeller

1977-07-20

1979-09-11

Croyle, Carlton R.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

415163, F04D 2956

Patent

active

041673689

ABSTRACT:
Advance diffuser for an axial blower having an impeller of large diameter received in a substantially circular housing and an axis extending in a given direction, includes a suction box formed with an intake opening through which a medium is drawable by suction in a direction substantially perpendicular to the given direction of the blower axis, a plurality of swirl vanes mounted on respective, mutually parallel shafts in the suction box, the suction box having a pair of mutually opposing parallel walls wherein the shafts are rotatably mounted, a pair of casing surface sections mutually connecting the parallel walls and tangentially merging with and surrounding the substantially circular outline of the impeller housing, the suction box having another wall facing toward the impeller and formed with a suction opening, the parallel shafts whereon the swirl vanes are respectively mounted being disposed along an arc surrounding part of the suction opening, the arc having end points mutually connectible by a secant to the circular outline of the impeller housing.

REFERENCES:
patent: 2393042 (1946-01-01), Hagen
patent: 2621848 (1952-12-01), Bentley
patent: 2947466 (1960-08-01), Busquet
patent: 3583827 (1971-06-01), Wood

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