A dishwasher having a fluid recirculation system which operates in a wash mode for spraying liquid onto objects supported on dishwasher upper and lower racks. The dishwasher includes a pump having a pump impeller disposed within a pump chamber for supplying wash liquid to first and second spray devices, associated with the lower rack and upper racks, respectively. The pump impeller draws wash liquid into the pump chamber and imparts a rotary motion to the wash liquid disposed in the pump chamber. A rotatable diffuser or flow director having a plurality of vanes extending into the pump chamber selectively directs the rotating wash liquid toward the spray devices and thereby controls wash liquid recirculation within the dishwasher responsive to the rotational motion of the wash liquid in the pump chamber.

Dishwasher having a wash liquid recirculation system

A windshield washer pump including comprising an impeller chamber having a reversible impeller rotatably mounted therein and an inlet for windshield washer fluid communicating therewith. Dual outlets communicate between the impeller chamber and opposite ends of an adjacent outlet chamber. A piston is slidably mounted in the outlet chamber intermediate axially aligned tubular discharge passages extending from the outlet chamber. Oppositely disposed projections are formed on the piston for being alternately urged into engagement with the tubular discharge passages, permitting the alternate pumping of fluid through the tubular discharge passages.

Reversible pump assembly

A ceramic bearing system for a centrifugal pump includes two substantially identical circular ceramic shafts, two substantially identical non-circular ceramic washers and two substantially identical non-circular ceramic bearing members. The centrifugal pump incorporating the bearing system includes an impeller shaft having one of the circular ceramic shafts mounted in each end and a non-circular recess in a rear end thereof for receiving one of the non-circular ceramic washers. The impeller is provided with a non-circular recess in a front end thereof for receiving the other non-circular ceramic washer. One of the non-circular ceramic bearing members is mounted in a non-circular hole or recess in the pump volute and the other non-circular ceramic bearing member is mounted in a non-circular hole or recess in the rear of the motor. When assembled, the circular ceramic shafts are rotatably mounted in the respective non-circular ceramic bearing members and the non-circular ceramic washers act as thrust bearings between the impeller and the bearing in the volute and between the impeller shaft and the bearing in the motor. According to the presently preferred embodiment, a fluid channel is provided along the length and around the back of the impeller shaft such that fluid being pumped by the pump circulates around the shaft and the bearings thereby cooling the assembly.

Magnetic drive centrifugal pump having ceramic bearings, ceramic thrust washers, and a water cooling channel

A fluid distribution valve which selectively distributes a fluid supplied from a fluid supply source to a plurality of flow channels, includes first and second branch pipes communicated with the fluid supply source; and a valve body selectively closing either one of the two branch pipes, and including a through hole allowing a circulation of the fluid into the second branch pipe from the fluid supply source in a case wherein the first branch pipe is closed. While the valve body closes the first branch pipe in an initial state thereof, the valve body is displaced or deformed according to a pressure difference of the fluid in the a first branch pipe side and the a second branch pipe side when the fluid is supplied from the fluid supply source so as to open the first branch pipe, and to close the through hole.

Fluid distribution valve, fluid supply system comprising same, and method for controlling the fluid supply system

A dual outlet washer pump for an automotive vehicle to alternately supply a stream of washer fluid to separate locations has a valve element with a frame portion surrounding a flat, flexible membrane mounted in vertically plainer fashion in a discharge section, which is movable from a center position unobstructing either of a pair of discharge ports to a first position in which fluid flow from a pumping chamber enters a first discharge side of the discharge section to directly impact a first side of the membrane causing flexure thereof away from the first discharge port to fluid flow there through and can currently causes contact of a second side of the membrane within an inner, lateral side of the discharge section adjacent the second discharge port to block fluid flow there through, the membrane opening the second discharge port and closing the first discharge port in the like manner when an impeller pump is rotated in a counter direction

Dual output window washer pump for an automotive vehicle

The double delivery pump comprises an impeller with double direction of rotation contained in a body connected to an axial intake conduit and defining a cylindrical seat connected to two tangential rectilinear ducts leading into a distribution seat containing a distribution element. The distribution element can slide in the distribution seat and defines shutters which can cutoff one or the other of two delivery conduits connected to the opposite ends of the distribution seat.

Double selectable delivery pump

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Double selectable delivery pump