Patent ID: 9596974
Date: 2017-03-21
CPC Classifications: A47L

Claim:
1. A fluid circulation system for a dishwasher appliance, the dishwasher appliance comprising a tub that defines a wash chamber, the fluid circulation system comprising: a sump for receiving fluid from the wash chamber, the sump comprising a chamber having a sidewall and a base wall; a pump, the pump comprising an impeller disposed within the chamber; and a filter at least partially disposed within the chamber and surrounding the impeller, the filter comprising a sidewall, the sidewall defining a plurality of perforations extending therethrough; and a shelf cantilevered from the sidewall of the sump towards the filter, wherein the shelf comprises a ledge and a support member, the ledge extending between a first end and a second end, the first end contacting the sidewall, and second end spaced from the sidewall.