Profiled blade of a fan and its application in motor-driven vent

Details Profiled blade of a fan and its application in motor-driven vent Profiled blade of a fan and its application in motor-driven vent

1987-09-11

1988-04-12

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Reverse curve surface

416169A, 416DIG2, F04D 2924

Patent

active

047370777

ABSTRACT:
The blade has an axis (.GAMMA.) which is the locus of the thrust centers (C) of its cross-sections parallel to its foot (13) which has a connecting point (I) between an abyssal arc (.gamma..sub.1) whose concavity faces toward the leading edge (11) and a summit arc (.gamma..sub.2) whose concavity faces toward the trailing edge (12) of the blade.

REFERENCES:
patent: 53902 (1866-04-01), Tripp
patent: 1806345 (1931-05-01), Halvorsen
patent: 2095162 (1937-10-01), Wood
patent: 4334824 (1982-06-01), Tsuchikawa et al.
patent: 4569631 (1986-02-01), Gray, III

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