Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having multiple parts welded – cemented – or fused
Patent
1985-05-29
1990-04-03
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing having multiple parts welded, cemented, or fused
4152121, 4152111, F04D 2944
Patent
active
049136216
ABSTRACT:
A centrifugal fan, comprising a housing with axially directed inlet and radially directed outlet as well as a driven impeller with rearwardly curved fan blades, the impeller being pivoted in the housing, includes a housing with an octogonal outer and inner cross section and further includes a sheet-metal deflector in the neighbourhood of the radial outlet, the deflector extending from one front wall to the other one and leading from the back edge of the outlet with respect to the rotational direction of the impeller radially inwards to the neighbourhood of the circumference of the impeller and from there outwards to the housing wall in a spiral-like curve. In a particular embodiment the impeller is displaced by a certain amount with respect to the center of the housing.
REFERENCES:
patent: 3561906 (1971-02-01), Fermer
patent: 3797961 (1974-03-01), Brechbuhl
patent: 3811790 (1974-05-01), Mikulina et al.
patent: 3924963 (1975-12-01), Zerrer
patent: 4073597 (1978-02-01), Barnhart et al.
patent: 4213742 (1980-07-01), Henshaw
KT Kunststofftechnik GmbH
Powell Jr. Everette A.
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