Blast fan

Details Blast fan Blast fan

2005-03-08

2005-03-08

Nguyen, Ninh H. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Tined or irregular periphery

C415S218100

Reexamination Certificate

active

06863500

ABSTRACT:
Disclosed is a blast fan for blowing air in a centrifugal direction thereof. The blast fan comprises a hub coupled to a rotating shaft of a motor, and a plurality of blades equally spaced and arranged around the outer peripheral surface of the hub. More particularly, the blast fan, of axial flow type or diagonal flow type, is configured so that turbo blades are integrally coupled to respective tips or trailing edges of the rotary blades. By achieving an optimal installation angle of the turbo blade, it is possible to achieve an increase in the flow rate and to reduce the level of noise generated.

REFERENCES:
patent: 2014032 (1935-09-01), Sharpe et al.
patent: 4265596 (1981-05-01), Katagiri et al.
patent: 4564335 (1986-01-01), Harmsen et al.
patent: 5215441 (1993-06-01), Evans et al.
patent: 3017943 (1980-11-01), None

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