Centrifugal blower

Details Centrifugal blower Centrifugal blower

2005-12-06

2005-12-06

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Casing having tangential inlet or outlet

C416S185000

Reexamination Certificate

active

06971846

ABSTRACT:
In a centrifugal blower, a casing forms a scroll duct on the outer periphery of a centrifugal fan. The scroll duct includes a motor scroll duct wall extending from the periphery of a motor casing wall in a radial direction, a suction scroll duct wall extending from the periphery of a suction casing wall in an axial direction, and an outer peripheral wall smoothly connecting the motor scroll duct wall and the suction scroll duct wall. The scroll duct walls include curves having substantially arc-shaped cross-sections. A radius of curvature of the arc of the motor scroll duct wall is greater than that of the suction scroll duct wall. The scroll duct does not form a protrusion in the inside. The air discharged from the fan creates a secondary flow in a single course of a swirling flow in the scroll duct. Therefore, noise due to interference with the discharging flow and secondary flow reduces.

REFERENCES:
patent: 4884946 (1989-12-01), Belanger et al.
patent: 5145317 (1992-09-01), Brasz
patent: 5601400 (1997-02-01), Kondo et al.
patent: 5743710 (1998-04-01), Yapp
patent: 6210109 (2001-04-01), Will et al.
patent: 6224335 (2001-05-01), Parisi et al.
patent: 6604906 (2003-08-01), Ozeki et al.
patent: 62282200 (1987-12-01), None
patent: 5-195995 (1993-08-01), None

Affiliated with

Also associated with

Rating

Centrifugal blower 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 blower, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Centrifugal blower will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3473384