Cleaner-head for a vacuum cleaner

摘要

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.

主权项

1. A cleaner head for a vacuum cleaner, the cleaner head having a dirty-air inlet provided in a main suction chamber of the cleaner head, an outlet duct extending from the main suction chamber for connection to a suction source, and a rotating brush bar housed inside the main suction chamber for agitating a floor surface contacted through the dirty-air inlet, the brush bar being driven by an air-cooled motor, the motor being mounted inside the cleaner head with at least a section of the motor being located inside the brush bar, an external casing of the motor having a plurality of air-cooling holes comprising at least one air intake and at least one air exhaust, the cooling holes being connected—intake to exhaust—to form one or more air-cooling paths through the inside of the motor, each air intake being connected to an upstream clean air inlet by a stationary intake duct, and each air exhaust being connected to a downstream clean air outlet by a stationary exhaust duct.