Blower housing and cabinet with improved blower inlet...

Details Blower housing and cabinet with improved blower inlet... Blower housing and cabinet with improved blower inlet...

2006-09-19

2006-09-19

Nguyen, Ninh H. (Department: 3745)

Rotary kinetic fluid motors or pumps

Casing and spaced housing with space vented to working fluid

C415S177000, C415S206000

Reexamination Certificate

active

07108478

ABSTRACT:
An airhandling unit for an HVAC system includes a cabinet having an electric motor driven centrifugal blower disposed therein. The blower includes a scroll or volute type blower housing which may be formed of opposed releasably connectable housing parts. The blower housing parts include opposed sidewalls with axially extending compound curved portions which cooperate with an end wall which is configured to have portions which are not of substantially constant increasing radial distance from the blower impeller axis of rotation. However, a constantly increasing airflow cross-sectional flow area is provided within the blower housing for blower discharge air. The disposition of the blower housing sidewalls with respect to the cabinet walls provides improved airflow distribution for air flowing into the blower air inlet openings.

REFERENCES:
patent: 3340788 (1967-09-01), Landingham et al.
patent: 4420034 (1983-12-01), VanderVaart
patent: 5042269 (1991-08-01), Sullivan
patent: 5474422 (1995-12-01), Sullivan
patent: 6155070 (2000-12-01), Rust, Jr. et al.
patent: 2 797 683 (1999-08-01), None
patent: WO 98/15785 (1998-04-01), None
Publication: “The Leader”, Title: “New Air Handler Features Better Performance in a Smaller Cabinet”, Spring 2004, p. 6, vol. 13, Issue 1.

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