A CLEANER-HEAD FOR A VACUUM CLEANER
A cleaner head for a vacuum cleaner has a rotating brush bar driven by an air-cooled motor, which is mounted inside the cleaner head with at least a section of the motor being located inside the brush bar. To cool the motor in use, an external casing of the motor is provided a plurality of air-cooli...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A cleaner head for a vacuum cleaner has a rotating brush bar driven by an air-cooled motor, which is mounted inside the cleaner head with at least a section of the motor being located inside the brush bar. To cool the motor in use, an external casing of the motor is provided a plurality of air-cooling holes comprising at least one air intake and at least one air exhaust. These cooling holes are connected-intake to exhaust-to form one or more air-cooling paths through the inside of the motor. Each air intake is connected to an upstream clean air inlet by a stationary-not rotating-intake duct, and each air exhaust is similarly connected to a downstream clean air outlet by a stationary-not rotating-exhaust duct. This avoids the problems associated with using the rotating brush bar itself as a duct for carrying cooling air to the motor. |
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