Fan

Details Fan Fan

1996-08-20

1998-08-04

Joyce, Harold

Ventilation

Having protecting air current

415119, 454333, 454192, F24F 900

Patent

active

057885680

ABSTRACT:
A fan comprising: blowing units, each including a squarely hollow casing, an electric motor incorporated into the casing and an axial impeller coupled to the motor for generating an air flow from an inlet toward nozzles; the casing having one end opened to form the inlet and the opposite end opened to form the nozzles; and a guide which projects into the casing to arrange the nozzles in a parallel pattern, in a slit shape and in rows; wherein the blowing units are coupled together at adjacent sides thereof to be arranged in a row, each unit has the inlet provided with a bellmouth which surrounds impeller, and a space between each bellmouth and each casing is separated from an air flow path with the air flow generated by the impeller passing therethrough.

REFERENCES:
patent: 4185688 (1980-01-01), Wiater et al.
patent: 4523630 (1985-06-01), Wiklund
patent: 5297990 (1994-03-01), Renz et al.
patent: 5370576 (1994-12-01), Krofchalk

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