| 摘要 |
A dust collecting unit for a vacuum cleaner is provided. The dust collecting unit includes a filter assembly for filtering foreign objects coupled to a dust collecting cover which covers a dust collecting canister ( 320 ). The dust collecting canister receives and air foreign object mixture and accumulates the foreign objects therein. The filter assembly is disposed inside the dust collecting canister and filters out the foreign objects from the mixture. A damper assembly that selectively provides outside air to the inside of the dust collecting cover is positioned within the dust collecting cover. When pressure within the vacuum cleaner is increased due to an excessive amount of foreign objects accumulated in the canister, the damper assembly is activated to allow entry of outside air to relive the internal pressure and avoid a fan motor overload. In this manner, the damper assembly can quickly react to an increase in internal pressure and avoid damage to the fan motor cause by an overload.
|
