A pump assembly includes pump casing (2), an impeller (14) rotatably arranged in the pump casing, a two rotation directions (A, B) electrical drive motor connected to drive the impeller and a valve arrangement (28) arranged in the pump casing to switch a flow path downstream of the impeller between two exits (24, 26) of the pump casing, depending on a rotation direction of the impeller. The valve arrangement includes a first movable valve element (34) at a first exit (24) and a second movable valve element (36) at a second exit (26). The first valve element partly closes the first exit in a closed position and is movable into an opened position by flow in the first rotation direction and the second valve element partly closes the second exit in a closed position and is movable into an opened position by flow in the second rotation direction (B).

A pump assembly is disclosed comprising, a pump including a pump housing having a fluid inlet. At least one fluid outlet extends from the pump housing. An impeller driven by a motor is mounted in the pump housing arranged to move a fluid from the fluid inlet to the at least one fluid outlet. A valve rotatably mounted between the impeller and the at least one fluid outlet selectively controls the flow of fluid through the at least one fluid outlet.

A centrifugal pump assembly includes an electrical drive motor (4, 6), an impeller (14) which is driven by the electrical drive motor (4, 6) as well as with at least one valve element (18) which is directly or indirectly movable along a first movement path between at least two switching positions, by the electrical drive motor (4, 6). At least a part of the valve element (18) is additionally movable along a second movement path which is different to the first movement path, between a released position, in which the valve element is distanced to at least one contact surface and a bearing position, in which the valve element bears on the at least one contact surface.

A conveying device with an electric drive, having a housing with a suction opening and a plurality of outlet openings that comprises a conveying element which is rotatably received in the housing to produce a fluid flow from the suction opening to the respective outlet opening, wherein the outlet openings are mounted to the housing at least axially spaced from each other.

A pump assembly includes at least one rotatingly driven impeller (14) and at least one valve element (18) which is rotatable about a rotation axis (X) between at least two switching positions. The valve element (18) includes a first face side (22) which extends transversely to the rotation axis of the valve element. A suction opening (24), which is engaged with a suction port (26) of the impeller (14), is formed in this first face side in a central region. The first face side (22) includes a pressure surface which surrounds the suction opening (24) and is adjacent to a delivery chamber (28) which surrounds the impeller (14).

A drain pump for a laundry treating apparatus includes a housing, an impeller, a motor, a circulation outlet, and a drain outlet. The circulation outlet and the drain outlet are defined on an outer circumferential surface of the housing, enable communication of the washing water with the housing, and protrude outward in directions tangential to the outer circumferential surface. The housing includes a rib that protrudes from an inner circumferential surface of the housing, that is located between the circulation outlet and the drain outlet, and that is to configured to guide the washing water to the circulation outlet or to the drain outlet based on a direction of rotation of the impeller.

A centrifugal pump assembly includes an electric drive motor (6, 8), a driven impeller (14) and a pump casing (2) which surrounds the impeller (14). A movable element (24; 24′) is arranged a valve element. A section of the valve element is movable from a released position into a bearing position, fixed on a contact surface (60), by pressure which is produced by the impeller in the pump casing. A control device (64) moves the valve element from one switching position into another switching position and reduces the speed of the drive motor. Upon pressure in the pump casing dropping such that the valve element is no longer fixed on the contact surface and the valve element has been moved into the other switching position, the control device increases the speed of the drive motor again. A method for moving a valve element is provided.

The invention relates to a centrifugal pump assembly having an electric drive motor (2), at least one impeller (14) driven by said electric drive motor (2) and a valve element (24; 24′) rotatable between two 5 valve positions driven by a fluid flow produced by said impeller (14), wherein the valve element (24; 24′) has a cover plate (104; 104′) extending transverse to the rotational axis (X) of the impeller (14) and facing the impeller (14), wherein the valve element (24; 24′) having protrusions (102, 102′) arranged on an outer surface side facing away 10 from the impeller (14) such that a flow can act on them for driving the valve element (24; 24′).

A drain pump for an appliance includes a single, self-starting, single-phase synchronous motor and a pump chamber having an inlet and first and second outlets. The first outlet is a drain outlet and the second outlet is a recirculation outlet. An impeller is disposed within the pump chamber and is selectively and bi-directionally driven by the single-phase synchronous motor. Rotation of the impeller in a first direction directs fluid from the inlet toward the drain outlet and away from the recirculation outlet. Rotation of the impeller in the second direction directs the fluid from the inlet toward the recirculation outlet and away from the drain outlet.

An object of the present invention is to provide a valve apparatus capable of keeping a holding state of a valve body. The valve apparatus 14 is adapted to supply cleaning fluid by switching between a first flow channel 54 and a second flow channel 55, the valve apparatus 14 being provided with: a first fluid pipe 44 having a first flow channel 54; a second fluid pipe 45 coaxially aligned with the first fluid pipe 44, the second fluid pipe 45 having a second flow channel 55; a housing 86 provided with a first valve chamber 37 and a second valve chamber 38; a partition wall 49 disposed between the first flow channel 44 and the second flow channel 55 in the housing 86; and a rib 46 provided to the housing 86 to support the partition wall 49, wherein the partition wall 49 has: a film-like valve body 50 which is elastically deformed by pressure of the first valve chamber 37 and the second valve chamber 38 so as to open one of the first flow channel 44 and the second flow channel 55 and close the other of the first flow channel 54 and the second flow channel 55; and a frame 51 attached along an outer circumference of the valve body 50 and supported by the rib 56, wherein the frame 51 is higher in stiffness than the valve body 50.