Patent ID: 7370389

Claim:
An improved water filter vacuum cleaner, comprising: a vacuum body having a suction assembly to generate a suction airflow and an output airflow, an air outlet connecting to the suction assembly to discharge the output airflow, a dust chamber formed therein, and a suction port communicating with the dust chamber and connecting to an external suction means; a guiding member having a first airflow passage which has a first airflow port on one end connecting to the suction assembly and a second airflow port on other end; and a dust collection assembly located in the dust chamber including a hollow dust collection seat for holding filter water and a upper cap, the upper cap having a second airflow passage which has a third airflow port on one end connecting to the second airflow port and a fourth airflow port on other end connecting to the suction port, the dust collection seat being divided by a partition to form a filter chamber and an airflow chamber that communicate with each other, the airflow chamber having a hollow airflow duct which has one end connecting to the fourth airflow port and other end communicating with the filter chamber; wherein the suction assembly generates a suction airflow to allow the external suction means to suck suction articles from the suction port to pass through the fourth airflow port and the airflow duct into the filter chamber and to generate oscillating moisture in the filter chamber to trap the suction articles thereby cleaned suction airflow flowing through the third airflow port, the second airflow port and the first airflow port to the suction assembly to form the output airflow to be discharged through the air outlet.