Abstract: A centrifugal separator for separating oil, the centrifugal separator comprising a centrifuge housing, a drive housing, a separating rotor, a shaft, a first bearing, a second bearing and a drive. A drive chamber is formed in the drive housing and a separating chamber is formed in the centrifuge housing. A partition wall is formed between the drive chamber and the separating chamber, and the partition wall comprises an opening. The shaft extends through the opening of the partition wall into the separating chamber and into the drive chamber, and the separating rotor is connected to the shaft for conjoint rotation and is arranged in the separating chamber. The drive is arranged in the drive chamber and drives the shaft, and the drive is in the form of an electric motor which drives the shaft directly in such a way that the shaft forms a motor shaft of the electric motor.

Abstract: In many pump types, in particular in orbital pumps, there is an optimization need with regard to the running characteristics, in particular with regard to parameters which relate to the delivery flow. What is provided is an orbital pump device for delivering liquid medium by a rotational movement including a hydraulic housing surrounding a hydraulic chamber in a fluid-tight manner at least one membrane unit which is arranged inside the hydraulic chamber in flat contact with an inner jacket surface of the hydraulic housing; and an inlet and an outlet provided in the hydraulic housing. At least one crowning is provided at the inner jacket surface and/or at the membrane unit such that a radial gap between the membrane unit and the inner jacket surface is defined by the crowning in a circumferential section of less than 360°, and in particular less than 180°.

Abstract: The invention relates to a pump device for pumping a fluid, comprising a hydraulic housing (2), a pump ring support (5) which is arranged in the hydraulic housing (2), an elastic pump ring (3) which is arranged between the pump ring support (5) and the hydraulic housing (2) in the radial direction (RR), and a separating chamber pin (4), wherein the pump ring (3) can be pressed in the radial direction (RR) against an inner wall surface of the hydraulic housing (2) by means of the separating chamber pin (4) in order to produce an at least local seal on the hydraulic housing (2), and wherein the hydraulic housing (2) has a radial offset section (6), along which an offset element that is formed on the separating chamber pin (4) or a separate offset element that interacts with the separating chamber pin can be introduced in the axial direction (AR) and thus offsets the separating chamber pin (4) and the pump ring (3) in the radial direction.

Abstract: In many pump types, in particular in orbital pumps, there is an optimization need with regard to the running characteristics, in particular with regard to parameters which relate to the delivery flow. What is provided is an orbital pump device for delivering liquid medium by a rotational movement including a hydraulic housing surrounding a hydraulic chamber in a fluid-tight manner at least one membrane unit which is arranged inside the hydraulic chamber in flat contact with an inner jacket surface of the hydraulic housing; and an inlet and an outlet provided in the hydraulic housing. At least one crowning is provided at the inner jacket surface and/or at the membrane unit such that a radial gap between the membrane unit and the inner jacket surface is defined by the crowning in a circumferential section of less than 360°, and in particular less than 180°.

Abstract: The invention relates to a pump device for pumping a liquid, comprising a hydraulics housing (12, 212), in which a pump ring (14, 214), a pump ring support (16, 216) and an eccentric (18), which can be driven by a shaft (20), are accommodated. The hydraulics housing (12, 212) has an annular portion (22, 222) and a first and a second lateral section (24, 26, 224), the two lateral sections (24, 26,224) being arranged opposite each other. The pump ring (14, 214) is mounted between the two lateral sections (24, 26, 224) of the hydraulics housing (12, 212) at least in some portions. On a side facing away from the pump ring support (16, 216), two first projections (28, 228), which run in the axial direction of the shaft (20), are each in contact with one of the two lateral sections (24, 26, 224).

Abstract: The invention relates to a pump device for pumping a liquid having a hydraulics housing (12), in which a pump ring (14), a pump ring support (16), and an eccentric (18) are accommodated, which eccentric is to be driven by a shaft (20), which defines an axial and a radial direction, wherein the pump ring (14) has a first axial side (45) and a second axial side (47), wherein the hydraulics housing (12) comprises an annular portion (22) and a first and a second lateral section (24, 26), wherein the two lateral sections (24, 26) are arranged opposite each other, wherein the pump ring (14) is arranged, at least in some portions, between the two lateral sections (24, 26) of the hydraulics housing (12), and wherein on the first axial side (45) and the second axial side (47), the profile of the pump ring (14) in each case follows a contour with an S-formed curve (32) with a convex section (34) and a concave section (36), wherein the convex section (34) lies further outwards in a radial direction of the shaft (20) in

Abstract: A device for ventilating a vehicle seat having a cushion (12) which is resilient with respect to user contact and which is constructed to form a seat and/or back contact face (24) and which has an air flow channel (16, 17) which forms an air outlet (15) in the direction toward the seat or back contact face, an air-permeable covering unit (18) which is formed in order to at least partially cover the air outlet and which is preferably constructed so as to be rigid and/or grid-like, and a ventilator rotor (30) which is associated with the air flow channel and which is driven in an electro-motive manner and a ventilator unit (14) which has a ventilator housing (32) which at least partially radially surrounds the ventilator rotor, characterized in that the covering unit and the ventilator unit are fixed on or in the cushion with spacing from each other along the air flow channel and without direct connection of portions of the covering unit and the ventilator unit, and the ventilator housing has at the peripheral

Abstract: The invention relates to a pump device for pumping a liquid, comprising a hydraulics housing (12, 212), in which a pump ring (14, 214), a pump ring support (16, 216) and an eccentric (18), which can be driven by a shaft (20), are accommodated. The hydraulics housing (12, 212) has an annular portion (22, 222) and a first and a second lateral section (24, 26, 224), the two lateral sections (24, 26,224) being arranged opposite each other. The pump ring (14, 214) is mounted between the two lateral sections (24, 26, 224) of the hydraulics housing (12, 212) at least in some portions. On a side facing away from the pump ring support (16, 216), two first projections (28, 228), which run in the axial direction of the shaft (20), are each in contact with one of the two lateral sections (24, 26, 224).

Abstract: The invention relates to a pump device for pumping a liquid having a hydraulics housing (12), in which a pump ring (14), a pump ring support (16), and an eccentric (18) are accommodated, which eccentric is to be driven by a shaft (20), which defines an axial and a radial direction, wherein the pump ring (14) has a first axial side (45) and a second axial side (47), wherein the hydraulics housing (12) comprises an annular portion (22) and a first and a second lateral section (24, 26), wherein the two lateral sections (24, 26) are arranged opposite each other, wherein the pump ring (14) is arranged, at least in some portions, between the two lateral sections (24, 26) of the hydraulics housing (12), and wherein on the first axial side (45) and the second axial side (47), the profile of the pump ring (14) in each case follows a contour with an S-formed curve (32) with a convex section (34) and a concave section (36), wherein the convex section (34) lies further outwards in a radial direction of the shaft (20) in

Abstract: A device for ventilating a vehicle seat having a cushion (12) which is resilient with respect to user contact and which is constructed to form a seat and/or back contact face (24) and which has an air flow channel (16, 17) which forms an air outlet (15) in the direction toward the seat or back contact face, an air-permeable covering unit (18) which is formed in order to at least partially cover the air outlet and which is preferably constructed so as to be rigid and/or grid-like, and a ventilator rotor (30) which is associated with the air flow channel and which is driven in an electro-motive manner and a ventilator unit (14) which has a ventilator housing (32) which at least partially radially surrounds the ventilator rotor, characterized in that the covering unit and the ventilator unit are fixed on or in the cushion with spacing from each other along the air flow channel and without direct connection of portions of the covering unit and the ventilator unit, and the ventilator housing has at the peripheral

Abstract: A blower arrangement having n fans, where n>1, has a housing arrangement for receiving said fans (24, 26, 28). The housing arrangement features a) a first housing part (22) having flow-through openings (76) that are each associated with one of the fans, and having at least one installation opening (78) through which a fan can be introduced into said first housing part (22) and can be mounted in the region of the associated flow-through opening (76); and b) a second housing part (40) that is connected, on one side, to the first housing part (22) on the side thereof having the at least one installation opening (78), and, on the other side, defines an air exit opening (42).

Abstract: A blower arrangement having n fans, where n>1, has a housing arrangement for receiving said fans (24, 26, 28). The housing arrangement features a) a first housing part (22) having flow-through openings (76) that are each associated with one of the fans, and having at least one installation opening (78) through which a fan can be introduced into said first housing part (22) and can be mounted in the region of the associated flow-through opening (76); and b) a second housing part (40) that is connected, on one side, to the first housing part (22) on the side thereof having the at least one installation opening (78), and, on the other side, defines an air exit opening (42).