Patent ID: 7713358
Filing Date: 2010-05-11
Classification: A47L

Abstract:
1. A dishwashing machine comprising a wash water tank, a plurality of wash water delivery nozzles, and a recirculation pump adapted to circulate wash water from said tank to said nozzles; said dishwashing machine being characterised in that it comprises a filling container having an inlet aperture fluidly connected through a first conduit to a delivery conduit of said pump during delivery of water from said pump to said nozzles such that water from said pump is also delivered to the filling container and an outlet aperture fluidly connected through a second conduit to a suction conduit of said pump during delivery of water from said pump to said nozzles such that fluid is pulled from the filling container by said pump during delivery of water from said pump to said nozzles, said outlet aperture of the filling container is located above said inlet aperture; and a vent aperture located above both said inlet aperture and said outlet aperture and through which air enters the filling container during delivery of water from said pump to said nozzles when water level in the filling container is below said outlet aperture such that entering air is delivered from the filling container through the outlet aperture to said pump resulting in cavitation until water level in the filling container covers the outlet aperture.