Abstract: A radial fan (1) or centrifugal blower is provided having a fan housing (2) with a spiral pressure chamber (D) and a rotor assembly (10) comprising an internally axially open bearing tube (20), in which a shaft (40) carrying a fan wheel (30) is mounted with a rotor (50) of a canned motor. An air-guiding channel (L) between a first pressure-chamber region (2a) and a second pressure-chamber region (2b) of the spiral pressure chamber (D) is formed between the bearing tube (20) and the wall (W) of the canned motor, so that an air flow flows through the air-guiding channel (L) from one pressure-chamber region (2a, 2b) to the other and in the process dissipates heat from the bearing tube (20) into the pressure chamber (D).

Abstract: A pump device (10) for pumping a fluid, having a hydraulic enclosure (12) that comprises an annular section, a pump ring (14) that is deformable and which defines an annular pump chamber at least in certain regions, a pump ring carrier (16) that is solidly connected to the pump ring (14), a first connector and a second connector, which first connector and which second connector are in fluid communication with the pump chamber, wherein the pump device (10) is set up in such a way that at least one measure influences a parking position of an eccentric (18) such that said parking position is preferred in the region of a clamping member (114), the measure being selected from: a) at least one recess in the hydraulic housing, which recess locally widens the chamber for the pump ring (14) in the axial direction, b) a geometry of the pump ring carrier (16), in which the pump ring carrier (16) has an enlarged diameter on its inner side facing the eccentric (18) in the angular region of the clamping member (114), and c

Abstract: A housing (17) of a fan (1) has an inflow-side end surface (2), an outflow-side end surface (16), and a wall ring (15). The wall ring 15 extends in a direction of an axis (12) from one of the end surfaces (2) to the other (16) and adjoins a fan passage. A fan wheel (10) is arranged in the fan passage. A grid (3) is arranged on the inflow-side end surface (2). The grid has a hub (8) positioned centrally in the fan passage. Primary struts (4) extend in the radial direction between the hub (8) and the edge of the fan passage. Secondary struts (6) intersect the primary struts (4).

Abstract: A fan device including an electric motor assembly (24, 26) designed to drive at least one blade wheel (34, 36) in a flow channel (18) provided axial to the blade wheel, an electronic assembly (38, 40), which forms commutator and/or ballast electronics for the electric motor assembly, is arranged in series with the electric motor assembly, and is produced on a circuit carrier, and a carrier unit (14) formed axially on or in the flow channel for retaining the electric motor assembly, wherein the carrier unit, which forms an inner circumference of the flow channel at least in sections, is made from a thermally conductive material, wherein the carrier unit has, on an outer segment (16) radially opposite to the flow channel, a mounting and cooling surface for interacting with the circuit carrier and/or power electronics components provided thereon in a heat-dissipating manner.

Abstract: A radial fan that includes a fan wheel, which can be rotated about an axis and which comprises a base plate and airfoils protruding from the base plate, wherein the airfoils each comprise an upstream edge in a first spacing (r1) from the axis and a downstream edge in a second spacing (r2) from the axis, and an end wall, which together with the base plate, delimits a flow channel in which the airfoils engage. The cross-sectional area (A) of the flow channel between the upstream edge and the downstream edge passes through a maximum in a third spacing (r3) from the axis. The difference between a fourth spacing (r4) and a fifth spacing (r5), at which the cross-sectional area (A) in each case assumes nearest adjacent minima to the maximum, is at least half of the difference (r2?r1) between the first and the second spacing.

Abstract: A motor assembly has an outer stator (40), a rotor assembly (30), a separating can (50), and a first bearing (36) and a second bearing (37). The rotor assembly (30) has an inner rotor (32) and a shaft (31) and defines an axial direction (77) and a radial direction (78) of the motor assembly (20). The motor assembly (20) has a magnetic air gap (53) between the outer stator (40) and the inner rotor (32). The separating can (50) has a split tube component (51) and a separating can base part (52). The split tube component (51) has a split tube section (54). The split tube section (54) extends through the magnetic air gap (53). The outer stator (40) is arranged around the split tube section (54). The split tube section (51) and the separating can base part (52) overlap in a first predefined axial region (55). A seal (60) is provided between the split tube section (51) and the separating can base part (52) in the first predefined axial region (55).

Abstract: A planetary gear device including an axially rotation-protected thrust washer is described herein. The planetary gear device includes gear components revolving around an axis of rotation, wherein the gear components include a planet gear, as well as a planetary carrier for the planet gear. The planetary gear device also includes a gear housing encasing the revolving gear components, a thrust washer supported around or at the axis of rotation, and a rotation protection, by means of which the thrust washer can be positioned so as to be rotation-protected. The rotation protection is an axially-engaging rotation protection, and the thrust washer is arranged such that the axially-engaging rotation protection is provided relative to the planetary carrier and/or relative to the gear housing by means of an axially-protruding protrusion at an interface between the thrust washer, the planetary carrier, and/or the gear housing.

Abstract: The present disclosure relates to a fan motor control device comprising a control signal input for applying a rotational speed control voltage as the control signal input signal and a control signal output for picking off a control signal output signal for connecting to a fan motor, where modulation means are connected downstream from the control signal input, said modulation means being designed to convert the control signal input signal into a digital and/or pulsed modulation input signal, and isolated transmission means are connected downstream therefrom, which transfer the digital and/or pulsed modulation input signal into a digital and/or pulsed modulation output signal isolated from the control signal input, which is converted into the control signal output signal that can be picked off on the control signal output by means of demodulation means connected downstream from the transmission means.

Abstract: A fan has an electronically commutated external-rotor motor serving to drive it. The motor has an internal stator (20) having a stator lamination stack (64) and a winding arrangement (66; 164, 166, 168, 170) associated with the stack. The internal stator has a central opening (149) for journaling a shaft (42). The fan further has a permanent-magnet rotor (28) separated from the internal stator (20) by a magnetically effective air gap (99). The internal stator (20) has a plastic coating (56, 58) that surrounds the stator windings, forms a bearing tube for journaling the shaft (42), and defines a wall element (62), implemented integrally with the plastic coating (56, 58), forming a compartment or cavity (108) for electrical components (112) of the motor. The plastic coating, bearing tube and compartment are preferably molded in a single working step.

Abstract: A fan has an impeller (20) that is equipped with blades (26, 28, 30, 32, 34; 58). The blades are configured so that the blade loading of individual blades differs during operation. As a result of this variable blade loading, the frequencies associated with the blade-passing noise (BPF) of the fan can be distributed over a broader frequency spectrum, and thus have a less obtrusive effect.

Abstract: Pump device has pump housing with annular portion; a deformable pump ring that defines annular pump chamber; a first connection and a second connection in fluid communication with the-pump chamber; an eccentric rotatable relative to the pump housing and arranged such that the eccentric deforms the-pump ring and pump ring presses against the annular to pump fluid along the-pump chamber from the-first to the-second connection depending on the current rotational position of the eccentric. A clamping element presses the-pump ring against the-annular portion of the pump housing in a clamping link region. The pump ring has at least one recess for accommodating at least part of the clamping element and is dimensioned to provide a distance between the radially inner side of the clamping element and the-pump ring.

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: A pump-motor combination includes a motor (30) and a pump (20). The pump has a first rotor (21) and a first housing 300). The motor is an electric motor (30) having a second rotor (31), a stator (33) and a second housing (32). The first (pump) rotor (21) is at least partially coupled, and the second (motor) rotor (31) is completely coupled, to a common rotating shaft (40) in order to enable transmission of rotation of the second (motor) rotor (31) to the first (pump) rotor (21). The pump-motor combination can be installed with the gearbox (G) or transmission of a motor vehicle, to assure supply of lubricant (360) when a primary lubricant pump (350) has not been operating, for example, upon start-up. Use of the common shaft (40) minimizes frictional losses during operation and reduces the cost of manufacture, since fewer bearings are needed.

Abstract: A self-cooling diagonal ventilating fan (30; 130) has a fan housing (36) and a fan wheel (80), rotatable around a rotation axis (168), that has, associated with it, an electronically commutated motor (73) which has an internal stator (64) and an external rotor (68, 152). Cooling air, after it emerges from the electric motor (73), is drawn through at least one opening (90) formed in the fan wheel (80) to the outer side of the fan wheel (80), in order, during operation, to maintain a constant cooling air stream (158) in a consistent flow direction through the internal stator (64) of the electric motor (73), regardless of possible backpressure.

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 pump device for pumping a liquid, has a hydraulics housing (12), in which a pump ring (14) with a contact surface (46), a pump ring support (16) and an eccentric (18), which can be driven by a shaft (20), are accommodated. The hydraulics housing (12) has an annular portion (22) and a first and a second lateral section (24, 26), the two lateral sections (24, 26) being arranged opposite each other. The pump ring (14) is mounted between the two lateral sections (24, 26) of the hydraulics housing (12) at least in some portions. The profile of the contact surface (46) has a contour with a curvature that changes at least in portions, and specifically in such a way that the curvature increases at least in some portions towards the ends of the contact surface (46).

Abstract: An arrangement (100) for specifying the pressure (64), produced by a pump (30) driven by an electric motor (31), includes a processor (116) which derives a target pressure value (62, 118) from an internal torque value (114) and a loss torque (108). The arrangement (100) further derives (112) the internal torque value (114) from a motor current value (110) and a motor constant ke.

Abstract: A motor housing for an electric motor has a generally cylindrical housing shell (10), which, at one end (26), accommodates a first bearing and a housing cover module (12) such that the housing cover module (12) closes an opposing, open end of the housing shell (10), and serves as a second bearing. The cover module (12) is preferably of metal material and is integrally formed with a plurality of projecting tab and/or arm portions (14, 16, 18). Around the housing shell (10), several recesses or slots (20) are formed, flanked by deformable elements (30,32). By axially applying a tool (60), the deformable elements are deformed to secure the tabs (14, 16, 18) within the slots (20) and to thereby connect the shell (10) and the cover module (12) axially together. The resulting structure is highly resistant to vibrational decoupling, and can readily be obtained by high-speed automated production steps.