A vane pump is disclosed that includes a plurality of vanes and radial slots configured to provide a gap between the vane and the radial slot such that the vane has a different angular position relative to the direction of rotation in a radially extended position compared to an angular position in a radially-retracted position. The different angular positions provide different orientation of the arcuate surface of the vane tip portion with respect to the cam body inner surface, thus providing different fluid stop points on the vane tip portion arcuate surface.

This oil pump is equipped with a rotatable inner rotor that includes a vane-housing unit housing multiple vanes so as to be capable of sliding in the radial direction, a rotatable annular outer rotor that includes multiple vane-connecting parts connecting the tip ends of the multiple vanes on the outside in the radial direction, first volume-changing parts, which are provided between the inner rotor and the outer rotor, and a first volume of which is changed in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function, and second volume-changing parts, which are provided in the outer rotor, and a second volume of which is changed by a change in the distance between adjacent vane-connecting parts in the circumferential direction in response to eccentricity of the inner rotor with respect to the outer rotor, thereby providing a pumping function.

A seal tube assembly of a pump system is provided. The seal tube assembly includes a single seal tube having a first axial end sealably coupled to a first vane pump and a second axial end sealably coupled to a second vane pump. The single seal tube includes transverse contact surfaces at the first axial end and transverse contact surfaces at the second axial end. The single seal tube is formed to define a first seal tube cavity at the first axial end and a second seal tube cavity at the second axial end.

A seal tube assembly of a pump system is provided. The seal tube assembly includes a single seal tube having a first axial end sealably coupled to a first vane pump and a second axial end sealably coupled to a second vane pump. The single seal tube includes transverse contact surfaces at the first axial end and transverse contact surfaces at the second axial end. The single seal tube is formed to define a first seal tube cavity at the first axial end and a second seal tube cavity at the second axial end.

The present invention relates to a laundry-care appliance (100) comprising a metering system (105) for metering a first liquid substance and a second liquid substance, wherein the metering system (105) comprises a first storage container (107) for providing the first liquid substance, a second storage container (109) for providing the second liquid substance, and a pump unit (112) which comprises a first pump head (113) and a second pump head (115). The metering system (105) comprises a common drive (129) for driving the first pump head (113) and the second pump head (115), wherein the common drive (129) can be driven in a first drive direction (137) and in a second drive direction (139). The first pump head (113) is designed in the case of the first drive direction (137) of the common drive (129) to convey the first liquid substance in a first conveying direction (149) from the first storage container (107). The second pump head (115) is designed in the case of the second drive direction (139) of the common drive (129) to convey the second liquid substance in a second conveyor direction (153) from the second storage container (109).

A vane pump (1) is disclosed comprising a housing (2) having a stator bore, a rotor (4) being rotatably mounted within said stator bore, and having a number of vanes (5) slidably mounted in said rotor (4) in radial direction of said rotor (4), an inlet (11) and an outlet (12). Such a vane pump should have a good efficiency. To this end said inlet (11) opens in an axial end wall of said stator bore (3) and said outlet (12) is connected to an outflow area formed in a circumferential wall (3) of said stator bore.

A rotary pump including: a housing having an inlet and an outlet for a fluid, and a delivery chamber connected to the inlet and outlet; a delivery rotor rotatable in the delivery chamber about a rotational axis has a structure which is central in relation to the rotational axis; and a setting structure surrounding the delivery rotor and with the delivery rotor forms delivery cells, delivering the fluid from the inlet to the outlet, can be moved back and forth relative to the delivery rotor, in order to adjust a delivery volume of the rotary pump. At least one of the setting structure and/or the rotor structure is a material composite structure including a molded region made of plastic and a functional region which is fixedly connected to the molded region and made of a functional material which has a different chemical composition to the plastic of the molded region.

A rotary pump including: a housing having an inlet and an outlet for a fluid, and a delivery chamber connected to the inlet and outlet; a delivery rotor rotatable in the delivery chamber about a rotational axis has a structure which is central in relation to the rotational axis; and a setting structure surrounding the delivery rotor and with the delivery rotor forms delivery cells, delivering the fluid from the inlet to the outlet, can be moved back and forth relative to the delivery rotor, in order to adjust a delivery volume of the rotary pump. At least one of the setting structure and/or the rotor structure is a material composite structure including a molded region made of plastic and a functional region which is fixedly connected to the molded region and made of a functional material which has a different chemical composition to the plastic of the molded region.

A bearing assembly is provided. The bearing assembly may include an inner race configured to couple to a shaft, an outer race disposed around the inner race, a bearing support structure coupled to the outer race, and a housing disposed around the bearing support structure. The housing and the bearing support structure may define a squeeze-film damper annulus configured to receive an aerated damping fluid. The aerated damping fluid may be provided from a fluid pump and an air supply port.

A rotary pump for delivering fluid includes: a pump housing having a low-pressure inlet and a high-pressure outlet for the fluid to be delivered; and a delivery rotor rotatable about a rotational axis in the pump housing and including a rotor base body and multiple deliverers distributed over the circumference of the rotor base body for delivering fluid from the low-pressure inlet to the high-pressure outlet. When the delivery rotor rotates, the radial and axial outer edges of the deliverers define a delivery region of the pump. The pump includes a flow channeling structure protruding axially into the low-pressure inlet in relation to the rotational axis of the delivery rotor from the pump housing wall in order to influence fluid flowing in the low-pressure inlet. The flow channeling structure arranged axially next to the delivery region and overlaps at least in portions with the delivery region in the radial direction.