| 摘要 |
An airhandling unit (45) for an HVAC system includes a cabinet (12) having an electric motor (29) driven centrifugal blower (50) disposed therein. The blower (50) includes a scroll or volute type blower housing which may be formed of opposed releasably connectable housing parts (56, 58). 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 (60) 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 (18, 20) provides improved airflow distribution for air flowing into the blower air inlet openings (57, 61). |
