Abstract:
The invention relates to an internal gear pump having a sickle-shaped separator (7) which, in a sickle-shaped pump chamber between an internal gear and a pinion of the internal gear pump, separates a suction region (8) from a pressure region (9). The invention proposes that pilot control ducts (16) be provided in the outer side and in the inner side of the separator (7), which pilot control ducts are open at the pressure-region-side end, that is to say communicate with the pressure region, and taper and end counter to a delivery direction of the internal gear pump. The pilot control ducts (16) effect a continuous pressure rise in tooth spaces of the internal gear and of the pinion from the suction to the pressure region (8, 9), and prevent an abrupt pressure rise at the pressure-region-side end of the separator (7).
Abstract:
Die Erfindung betrifft eine Innenzahnradpumpe (1) als Rückförderpumpe einer schlupfgeregelten hydraulischen Fahrzeugbremsanlage. Die Erfindung schlägt vor, ein Hohlrad (4) der Innenzahnradpumpe (1) in einem Lagerring (5) aus Kunststoff zu lagern, der eine Drucktasche (12) auf einer Druckseite P der Innenzahnradpumpe (1) aufweist, wobei die Drucktasche (12) mit einem Auslassdruck der Innenzahnradpumpe (1) beaufschlagt ist. Die Erfindung bewirkt einen Radialkraftausgleich am Hohlrad (4).
Abstract:
A method for manufacturing roller pockets in a stator of a gerotor device generally includes providing a stator having a cavity including a generally cylindrical section defining a central axis and a plurality of roller pockets angularly spaced around a periphery of the cylindrical section. Each roller pocket is configured to receive a respective roller, which acts as an internal tooth of the gerotor device. Each roller pocket defines a generally cylindrical roller pocket bearing surface. The method further includes grinding each roller pocket bearing surface of each roller pocket with a grinding wheel rotating about a rotational axis perpendicular to the central axis. A stator for a gerotor device is also described.
Abstract:
The invention relates to an internal gear pump (1), in particular for a motor vehicle (4), for delivering a fluid, comprising an internal gear (5) having an internally toothed ring (6), an external gear (8) having an externally toothed ring (9), wherein the teeth (7, 10) of the internal and external gear (5, 8) engage with one another, a working chamber (32) being formed between the internal gear (5) and the external gear (8), wherein the external gear (8) is provided with at least one particle-receiving-chamber (17) for receiving particles from the fluid.
Abstract:
Zahnradpumpe zur Förderung einer Flüssigkeit, insbesondere Kraftstoff, mit mindesten zwei ineinandergreifenden Zahnrädern, angeordnet in einem Gehäusering, der beidseitig von zwei Deckeln verschlossen wird, vorgeschlagen wird, dass auf mindestens eine Innenseite des Gehäuserings oder der Deckel eine Beschichtung aufgebracht ist.
Abstract:
Pumpe (5) mit Elektromotor (4), insbesondere für ein Kraftfahrzeug, zum Fördern eines Fluides, umfassend ein Laufrad (18) mit Förderelementen (19), von dem um eine Rotationsachse eine Rotationsbewegung ausführbar ist, einen an dem Laufrad (18) vorhandenen Arbeitsraum, einen Elektromotor (4) mit einem Stator (13) und einem Rotor (16), ein Gehäuse (8), wobei das Laufrad (18) mit den Förderelementen (19) und der Elektromotor (4) innerhalb des Gehäuses (8) angeordnet sind und vorzugsweise die Pumpe (5) in den Elektromotor (4) integriert ist oder umgekehrt, indem der Rotor (16) von dem Laufrad (18) gebildet ist, wobei der Stator (13) wenigstens teilweise, insbesondere vollständig, von einer Dichthülle (31) umschlossen ist.
Abstract:
The invention relates to a rotary piston pump for delivering a fluid medium comprising a solid, having two rotary pistons with rotary piston vanes engaging with each other, each having a rotary axis and an outer circumference, wherein the rotary axes of the two rotary pistons are disposed at a distance from each other and parallel to each other, and the outer circumferences of the two rotary pistons partially overlap each other, and a housing having an inlet opening and an outlet opening and an inner and an outer wall, wherein the inner wall of the housing encloses one segment each of the outer circumferences of the rotary pistons, and wherein the rotary piston pump is designed for delivering the medium in a delivery direction from the inlet to the outlet opening. According to the invention, the rotary piston pump is characterized in that the outlet opening at the inner wall of the housing comprises a maximum discharge opening greater than the distance between the rotary axes in a direction parallel to the plane of the rotary axes and perpendicular to the rotary axes.
Abstract:
The invention relates to a gear pump (1) for conveying a fluid, said gear pump comprising a rotatably mounted, external geared toothed wheel (3) and an internal geared annular gear (2) that are meshed in order to generate a conveying action, and are arranged together with an electrically commutable stator (7) in a housing (5). The stator (7) extends concentrically around the annular gear (2) and interacts with the annular gear to generate an electromotive force. The annular gear (2) has a closed, homogeneous cylindrical surface and a plain bearing (13) is provided on the stator (7).
Abstract:
The invention relates to a double internal gear pump (1) having two internal gear pumps (2, 2') having a common pump shaft (3). According to the invention, a partition (10) is formed between the two internal gear pumps (2, 2') having a frustoconical circumferential surface (12) which contacts an opposing surface (13) in a sealing manner in a pump housing (6). Pump inlets and pump outlets can be led through the partition (10).