Centrifugal fan with noise suppressing arrangement

Details Centrifugal fan with noise suppressing arrangement Centrifugal fan with noise suppressing arrangement

1991-10-22

1993-04-06

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

415206, 181224, 181292, 181294, 417312, 424 762, F01D 2504

Patent

active

051998467

ABSTRACT:
A centrifugal fan with a noise suppressing arrangement includes a fan, a motor for rotating the fan and a scroll casing for accommodating the fan, the scroll casing is formed of a first scroll casing member covering the fan and a second scroll casing member forming the bottom part of the scroll casing, the second scroll casing member being provided with at the center thereof a cylindrical housing for holding the electric motor, and further includes a porous sound absorbing member having elasticity sandwiched and secured between the first scroll casing member and the second scroll casing member whereby the combination of the porous sound absorbing member and an air layer formed between the porous sound absorbing member and the inner bottom wall of the second scroll casing member suppresses noises caused by rotation of the fan.

REFERENCES:
patent: 2498143 (1950-02-01), Struckmann
patent: 3156233 (1964-11-01), O'Connell
patent: 3312389 (1967-04-01), Matsui
patent: 4560395 (1985-12-01), Davis
patent: 4808202 (1989-02-01), Nishikawa et al.
patent: 4938309 (1990-07-01), Emdy
patent: 5041324 (1991-08-01), Siegling et al.

Affiliated with

Also associated with

Rating

Centrifugal fan with noise suppressing arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Centrifugal fan with noise suppressing arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Centrifugal fan with noise suppressing arrangement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-532024