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US 2002/0119044 A1Published application
Centrifugal blower with partitioned scroll diffuser
OwnerJohn F. O'Connor, JR., Roger B. Dickinson +1inventors
InventorsJohn F. O'Connor, JR., Roger B. Dickinson, Russel H. Marvin
Life of this patent
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Abstract
A centrifugal blower having at least one radial plane dividing its scroll into sub-sections which may vary as to cut-off points and axial and radial dimensions as well as axial displacement to meet requirements of individual application system flow paths.
Claims21
A centrifugal blower assembly comprising:
- a centrifugal impeller adapted to receive air axially and discharge the same radially;
- an electric motor connected in driving relationship with the impeller;
- a scroll diffuser defining at least one axial inlet opening for supplying air to the impeller, and at least one scroll section for collecting and discharging air from the impeller, and
- at least one partition extending substantially in a radial plane mounted within the housing with an inner opening receiving and having an edge in close proximity to the periphery of the centrifugal impeller, said partition serving to divide the scroll interior into at least two discrete axially adjacent flows for the discharge of air from the scroll section.
1 more element
A low profile centrifugal impeller assembly comprising:
- a centrifugal impeller adapted to receive air axially and discharge the same radially;
- said impeller comprising a back plate with a radially outwardly disposed annular portion extending substantially in a radial plane, and
- a plurality of substantially axially extending parallel air moving blades spaced circumferentially and having one end portion mounted on said outwardly disposed annular portion of the back plate,
- a radially inwardly disposed portion of the back plate having a cup-shaped configuration and extending axially within the outer back plate portion in a cylindrical opening defined by the air moving blades thereon, and at least a permanent magnet portion of an electric motor for driving the impeller disposed within the cup-shaped radially inner portion of the back plate;
- a housing defining at least one axial inlet opening for supplying air to the impeller and at least one scroll section for collecting and discharging air from the impeller.
2 more elements
Dependencies are inferred from the claim text.