Bearing housing, and motor assembly and vacuum cleaner...

Details Bearing housing, and motor assembly and vacuum cleaner... Bearing housing, and motor assembly and vacuum cleaner...

2011-01-11

2011-01-11

Redding, David A (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

Reexamination Certificate

active

07865998

ABSTRACT:
Disclosed are a bearing housing, and a motor assembly and a vacuum cleaner having the same. The motor assembly includes: a motor housing; a motor installed in the motor housing, for supplying suction force; an impeller rotatably installed on a rotation shaft of the motor; an impeller cover coupled to the motor housing, for covering the impeller; a guide vane installed between the motor and the impeller, and composed of a plurality of diffuser vanes for converting some of dynamic pressure of the air passing through the impeller into static pressure, and a plurality of return vanes formed on the bottom surfaces of the diffuser vanes, for forming passages for guiding the air with its pressure raised by the diffuser vanes to the motor side; and a bearing housing including a passage formation unit for forming passages by contacting the bottom ends of the return vanes, and a shaft support unit for supporting the rotation shaft of the motor. The motor assembly and the vacuum cleaner having the same solve incomplete passage formation of the return vanes due to miniaturization of the fan-motor, and provide the passages with an optimum area.

REFERENCES:
patent: 2175641 (1939-10-01), Replogle
patent: 5027469 (1991-07-01), Toyoshima et al.
patent: 5632578 (1997-05-01), McCurry et al.

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