Patent ID: 8397736
Filing Date: 2013-03-19
Classification: A47L,F04D

Abstract:
1. A pump, for a washing appliance including a wash chamber, comprising: a pump casing having a substantially cylindrical side wall, a bottom wall and a ceiling, the pump casing being adapted to receive water from said wash chamber; an inlet and an outlet in the side wall spaced apart circumferentially about the side wall; an inlet conduit at the inlet extending from the pump casing at a small angle above the horizontal; a pump impeller in the casing adjacent the bottom wall, the pump impeller having vanes extending to the side wall; wherein the ceiling includes a downwardly extending dividing wall section extending radially from a central location to the side wall; the dividing wall having an inlet side adjacent said inlet and an outlet side adjacent said outlet; and the ceiling incorporating a ramped surface rising around said central location between the outlet side and the inlet side of the dividing wall, the ramped surface higher adjacent the inlet side than the outlet side; the upper most periphery of the inlet being above or substantially flush with the ramped surface adjacent the inlet side of the dividing wall section so that when the impeller is not rotating, air inside the pump chamber will rise up the ramped surface through the inlet and up the inlet conduit.