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US 2003/0147746 A1Published application
Blower motor
AssigneeJohnson Electric S.A.
InventorsKwong Yip Poon, Siu Chun Tam
Life of this patent
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Abstract
A bypass blower motor assembly having a motor section 10 and a blower section 11 separated by an end bracket 20 which has through openings. The openings are sealed by a diffuser plate 22 using a labyrinth seal and two O-rings 41, 42.
Claims10
A bypass blower motor assembly comprises:
- 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 fixed to the fan end bracket and accommodating the impeller and diffuser plate,
- wherein the impeller housing has an inlet and a plurality of outlet openings, the impeller being operable to create an air flow from the inlet to the outlet openings and the diffuser plate having vanes for guiding the air flow from the impeller to the outlet openings, and
- the fan end bracket has a number of openings which are sealed by the diffuser plate.
4 more elements
Dependencies are inferred from the claim text.