Transverse fan with randomly varying I-shaped tongue

Details Transverse fan with randomly varying I-shaped tongue Transverse fan with randomly varying I-shaped tongue

1994-12-27

1995-09-12

Lopez, F. Daniel

Rotary kinetic fluid motors or pumps

With sound or vibratory wave absorbing or preventing means...

415 532, 415 531, F04D 500, F04D 2966

Patent

active

054492718

ABSTRACT:
A vortex wall (14) and impeller (30) assembly for a transverse or cross flow fan (10). The wall is intended to reduce blade rate tonal noise and is formed in a number of segments (15). The segments have noses with J shaped cross sections and are arranged so that the J tail (16) of one segment points in the opposite direction from the J tail of an adjacent segment. The spanwise widths (W), segment-to-impeller clearances (c) and setting angles (.theta.) vary randomly, within specified limits, among the segments.

REFERENCES:
patent: 5094586 (1992-03-01), Takada et al.
patent: 5197850 (1993-03-01), Shinobu et al.

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