Axial flow fan with centrifugal elements

Details Axial flow fan with centrifugal elements Axial flow fan with centrifugal elements

1991-07-30

1993-07-13

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

416228, F04D 2928

Patent

active

052267830

ABSTRACT:
An axial flow fan has each of its fan blades provided with an integrally formed centrifugal element which extends substantially parallel to an imaginary plane containing a central axis of the fan. Some of the air flow passing through the fan collides against the centrifugal elements, which deflect the air in the radial directions. A disk-like air barrier is thus formed around the fan blades, whereby a countercurrent flow and circulation flow are eliminated. The fan efficiency is also improved.

REFERENCES:
patent: 1041913 (1912-10-01), Tyson
patent: 2104306 (1938-01-01), McLeod
patent: 2710665 (1955-06-01), Stratton
patent: 2957621 (1960-10-01), Haims
patent: 4664593 (1987-05-01), Hayashi et al.

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