Patent ID: 7241386

Claim:
A water cleaner comprising: a filtering canister hung under a float to be immersed in water in a water tank and having a plurality of filtering holes formed through the canister and made of oxidation-reduction alloy for filtering off chlorine and hazardous materials contained in the water when passing through the filtering holes in the canister; and a functional water-treatment material comprising: tourmaline, photocatalyst, effective microorganisms, nano silver and oxidation-reduction alloy; and filled in the canister for killing bacteria or fungi, for removing pollutants, and for removing odor in the water for cleaning water in the water tank; whereby upon a downward streamflow of incoming water from a water inlet, the float will be moved and agitated by eddy flow or turbulent flow caused by the incoming water from the inlet to simultaneously move the canister as hung under the float for increasing contacting opportunities among the water, the canister and the functional material in the canister for efficiently cleaning the water.