Axial-flow fan

Details Axial-flow fan Axial-flow fan

1978-09-18

1980-09-30

Smith, Leonard E.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Pump outlet or casing portion expands in downstream direction

415213C, 417354, F04B 3504, F04D 2954

Patent

active

042252857

ABSTRACT:
An axial-flow fan includes an impeller and a supporting member, a hollow elongated casing having a circumferential wall, an inlet and an outlet axially spaced from the inlet and defining with the circumferential wall the interior of the casing accommodating the impeller and the supporting member. The circumferential wall comprises a first conical annular portion adjacent to the inlet and diverging in the direction from the outlet to the inlet, a second conical annular portion adjacent to the outlet and diverging in the direction from the inlet to the outlet.

REFERENCES:
patent: 2611533 (1952-09-01), Herrman et al.
patent: 3334807 (1967-08-01), McMahan

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