Multi-stacked circular plate fan provided with blades

Details Multi-stacked circular plate fan provided with blades Multi-stacked circular plate fan provided with blades

1992-11-12

1995-06-27

Kwon, John T.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

416178, 416214R, F04D 2938

Patent

active

054275032

ABSTRACT:
A multi-layer disk fan with blades operates quietly. The multi-layer disk fan with blades is formed by laminating a multiplicity of annular disks in a measured spaced relation, the arrangement having such a feature that a multiplicity of blades are interposed between the annular disks and the ends of the respective blades. The blades are further positioned a circumferentially measured spaced apart distance inward of the outer peripheral edges of the annular disks. Turbulent air flow caused by peeling-off at the tips of the blades through the effect of laminar flow by the disks is effectively prevented. Likewise, distortion in outlet speed at the outer peripheral edges of the annular disks is controlled, reducing noises from turbulent flow and interference and resulting in quiet operation.

REFERENCES:
patent: 3145911 (1964-08-01), Helmbold
patent: 3426965 (1969-02-01), Kulling
patent: 3856434 (1974-12-01), Hoffmann
patent: 4329118 (1982-05-01), Ranz
patent: 4634344 (1987-01-01), Zagar et al.

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