Upright vacuum cleaner

Abstract

A vacuum cleaner is disclosed. The vacuum cleaner comprises a cleaner body, a cyclonic chamber comprising a primary cyclone and at least one secondary cyclone disposed around the primary cyclone, a flow passage guide for guiding the airflow discharged from the primary cyclone to a secondary airflow inlet of the secondary cyclone, a first conduit for fludically connecting a nozzle section defining a suction opening to a primary airflow inlet of the primary cyclone, a suction source having an suction source inlet and an suction source outlet, and a second conduit for fludically connecting a secondary airflow outlet to the suction source inlet of the suction source. Accordingly, it is possible to achieve a low flow resistance by virtue of the flow passage guide and an enhanced dust collecting performance by virtue of a sealing effect of the sealing member.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to vacuum cleaners. More particularly, the present invention relates to upright vacuum cleaners used for suctioning dirt and dust from carpets and floors. [0003] 2. Discussion of the Related Art [0004] Upright vacuum cleaners are known to include a cleaner body having a handle, by which an operator of the vacuum cleaner may grasp and maneuver the cleaner, and a nozzle section which travels across a floor, carpet, or other surfaces being cleaned. [0005] The cleaner body often formed as a rigid plastic housing which encloses a dirt and dust collecting filter bag. The underside of the nozzle section includes a suction opening formed therein which is in fluid communication with the filter bag. [0006] A suction source such as a motor and fan assembly is enclosed within the cleaner body. The suction source generates the suction force required to pull dirt from the carpet or floor through the ...

AI Technical Summary

Benefits of technology

[0013] An object of the present invention is to provide a vacuum cleaner which has a simple coupling structure, and is convenient in use.

[0014] Another object of the present invention is to provide a vacuum cleaner which has a high dust collecting performance.

[0015] Another object of the present invention is to reduce the flow resistance during the operation mode.

Problems solved by technology

Such cyclonic airflow upright vacuum cleaners have not been found to be entirely effective and convenient to use.

For example, with these cyclonic airflow vacuum cleaners, the coupling structure of the dust collector is complex, thereby causing an inconvenience in use of the vacuum cleaner.

Also, in the vacuum cleaner having the above-mentioned configuration, there is a problem in that the vacuum cleaner has a low dust collecting performance by virtue of the leakage in the dust collector.

Also, in the vacuum cleaner having the above-mentioned configuration, there is a problem in that a flow resistance is high because the air within the dust collector does not flow smoothly due to the structure of the dust collector.

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