Patent ID: 7871472

Claim:
A household washing appliance comprising: a wash chamber having a bottom wall; a sump located on the bottom wall and having a filter chamber; a sieve wall mounted to the sump above the filter chamber and having an opening aligned with the filter chamber; a fine filter defining a hollow interior detachably mounted in the filter chamber for insertion and removal through the opening of the sieve wall and in fluid communication with the wash chamber; a biocide support located within the hollow interior and carried by the fine filter and configured to replaceably support a biocide element; a biocide element supported by said biocide support; a wash pump downstream of and fluidly coupled to the filter chamber and fluidly coupled to the wash chamber; and wherein operation of the pump draws fluid from the wash chamber and through the filter chamber where the fluid passes over the biocide element within the hollow interior when the fine filter is mounted within the filter chamber.