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US 2003/0147747 A1Published application
Blower motor
AssigneeJohnson Electric S.A.
InventorsSiu Chun Tam, Kwong Yip Poon
Life of this patent
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Abstract
A diffuser plate 22 for a bypass blower motor assembly has a number of vanes 34 for guiding air flow from an impeller to outlet openings in an impeller housing. Each vane has two curved air guiding blades 36, 37. One blade 36 guides the air axially and circumferentially from the impeller towards the outlet openings and the other blade 37 guides the air radially through the outlet openings.
Claims6
A bypass blower motor assembly comprising:
- a motor including a shaft and a fan end bracket supporting a bearing for the shaft;
- a diffuser plate fitted to the fan end bracket;
- an impeller fixed to the shaft for rotation therewith;
- and
- an impeller housing having an inlet opening and a plurality of outlet openings,
- wherein the impeller is axially located between the inlet and outlet openings operable to create an air flow therebetween and the diffuser plate has a plurality of peripheral vanes arranged to direct the air flow from the impeller to the outlet openings, and
- each vane has a first blade, which is curved in the axial direction to direct the air flow axially away from the impeller and circumferentially to align with respective outlet openings, and a second blade extending from a periphery of the diffuser plate to direct the air flow radially outwardly through the outlet openings.
4 more elements
Dependencies are inferred from the claim text.