EP3903006A1 - Pompe rotative à compensation axiale, garniture d'étanchéité de sortie pour une pompe et ensemble pompe prémonté - Google Patents

Pompe rotative à compensation axiale, garniture d'étanchéité de sortie pour une pompe et ensemble pompe prémonté

Info

Publication number
EP3903006A1
EP3903006A1 EP19835307.0A EP19835307A EP3903006A1 EP 3903006 A1 EP3903006 A1 EP 3903006A1 EP 19835307 A EP19835307 A EP 19835307A EP 3903006 A1 EP3903006 A1 EP 3903006A1
Authority
EP
European Patent Office
Prior art keywords
pump
pressure
outlet
sealing
outlet seal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19835307.0A
Other languages
German (de)
English (en)
Inventor
Claus Welte
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schwaebische Huettenwerke Automotive GmbH
Original Assignee
Schwaebische Huettenwerke Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schwaebische Huettenwerke Automotive GmbH filed Critical Schwaebische Huettenwerke Automotive GmbH
Publication of EP3903006A1 publication Critical patent/EP3903006A1/fr
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to a rotary pump which is set up for axial compensation of component and / or installation tolerances, thermally induced changes in geometry and pressure-related movements.
  • the invention relates to an outlet seal for a pump, which can be designed in particular as a rotary pump, and also to the pump including the outlet seal.
  • the pump can be single-flow or multi-flow, in particular multi-circuit.
  • the invention also relates to a preassembled pump or assembly unit.
  • the pump can be used as a transmission pump for supplying a transmission, for example an automatic transmission or steering gear of a vehicle or a transmission of a wind turbine, with pressurized fluid. In yet another use, it can be used as a lubricating oil pump to supply a
  • Internal combustion engine for example a drive motor of a vehicle, can be used with lubricating oil.
  • a gear pump is also conceivable, especially in versions in which the pump is multi-flow.
  • the pump can advantageously be designed in a cartridge design.
  • a pump in the form of a pump insert which is arranged in a receiving shaft of a receiving device, is known from WO 01/94791 A1.
  • the pump insert includes a peripheral wall surrounding a pump delivery chamber and two
  • Delivery chamber is a rotor with blades rotatable about an axis of rotation.
  • the delivery chamber is divided into delivery cells by means of the vanes, which periodically increase and decrease as the rotor rotates in order to deliver pressure fluid from a low-pressure side of the pump to a high-pressure side.
  • the pump insert is arranged axially between a bottom of the receiving shaft and a cover of the receiving device. During operation of the pump, the pressure fluid is drawn from an outer circumference
  • the pump insert extends into the delivery chamber and is sucked through the one end wall into a pressure chamber formed between this end wall and the bottom of the receiving shaft and from there.
  • An annular sealing element which surrounds the relevant end wall and acts as a radial seal, separates the pressure chamber from the Suction chamber.
  • a spring device is arranged in the pressure chamber, which axially tensions the pump insert against the cover. The pump insert is axially movable to a small extent relative to the receiving device against the force of the spring device, so that
  • the end wall is axially guided by the receiving device in the area of the radial seal.
  • the pump has two working flows, which deliver together in the pressure chamber, i. H. the floods of work are not separate; the pump is designed as a single circuit pump.
  • EP 3 081 741 A2 discloses a gear pump with several working floods.
  • the pump is designed as a multi-circuit pump.
  • the pump accordingly has separate pressure outlets which are sealed off from one another, in each case at least one pressure outlet per flood.
  • a first pressure outlet is sealed by means of an annular radial seal which surrounds a housing of the pump.
  • An annular outlet seal which surrounds a second pressure outlet in a sealing manner, is arranged within the pressure chamber obtained by means of the radial seal in order to separate the second pressure outlet from the first pressure chamber.
  • the pump is designed in a cartridge design and is installed with an outer end face of the pump housing first in a receiving shaft of a receiving device, for example a housing of an automatic transmission.
  • a pressure fluid delivered by the pump is discharged via the pressure outlets and axially opposite pressure connections of the receiving device.
  • Spring device which is supported on a bottom of the receiving shaft, presses axially toward the bottom of the receiving shaft with spring force
  • US 2017/0260979 A1 discloses a sealing arrangement for a vane pump in a cartridge design, the vane pump having two working flows and being designed as a two-circuit pump.
  • the sealing arrangement comprises a radial seal which runs around the circumference of an end wall of the pump housing and which separates a first pressure chamber of the pump from the suction chamber, and an outlet seal which is arranged on an outer end side of the end wall.
  • the outlet seal separates the first pressure chamber from a second pressure chamber of the pump and seals a shaft passage for a drive shaft of the pump in that the outlet seal rotates around the shaft passage.
  • the sealing of the one or more pressure outlets is to be improved in relation to component and / or installation tolerances of the receiving device and the pump and / or thermally-related changes in geometry and / or pressure-related movements of housing structures of the pump.
  • a pump as the invention relates to a pump housing with a
  • the pump housing has a peripheral wall which surrounds the delivery chamber of the pump, a first end wall and a second end wall, the end walls delimiting the delivery chamber on their end faces. At an outer end face of the first end wall facing away from the delivery chamber opens
  • Pressure outlet for pressure fluid delivered from the delivery chamber comprises an outlet seal which is provided for sealing the pressure outlet on the outer end face of the first end wall.
  • the pump housing can be mounted by means of a mounting structure on a receiving device available at the mounting location or can already be mounted. If it is said that the pump can be mounted on a mounting device, this also includes mounting inside the mounting device.
  • Assembly structure can be part of the pump. In addition to
  • Pump housing for example, are formed by the second end wall.
  • a mounting structure can be part of the
  • the receiving device can in particular be a housing of an assembly to be supplied with the pressurized fluid, such as a transmission or a motor.
  • the first end wall of the pump housing is axially opposite a connecting wall of the receiving device.
  • At the connection wall of the receiving device can in particular be a floor of a receiving shaft for the pump.
  • a pressure connection via which the pressure fluid flowing through the pressure outlet can be discharged, opens at the connecting wall of the receiving device.
  • the outlet seal serves to establish a tight fluid connection between the pressure outlet of the pump and the pressure connection of the receiving device.
  • the pump can include a pressing device for applying a pressure force to the outlet seal.
  • the pressure force acts axially on the outlet seal away from the assembly structure in order to press it into a sealing contact with the connecting wall.
  • the mounting structure can in particular be set up to absorb the reaction force acting in the axial opposite direction.
  • the pump housing which comprises at least the circumferential wall, the first end wall arranged on an axial end face of the circumferential wall and the second end wall arranged on the axially opposite end face of the circumferential wall, is axially movable relative to the mounting structure and axially on the mounting structure via the pressing device supported.
  • the pump housing and the mounting structure, optionally also the outlet seal, form a preassembled mounting unit the pump housing can be kept axially movable on the mounting structure before installation at the installation location.
  • the outlet seal is instead axially movable relative to the pump housing and axially supported on the pump housing via the pressing device.
  • the outlet seal can optionally also be an addition to the
  • Pump housing existing assembly structure form a pre-assembled assembly unit, be held axially movable before assembly at the installation site on the pump housing and / or on the assembly structure.
  • the pump housing is axially movable relative to the mounting structure and the outlet seal relative to the pump housing. It is
  • Outlet seal is axially supported by the pressure device on the pump housing.
  • the pump housing can also be attached to the assembly structure via the pressing device and the outlet seal can be attached to the mounting structure
  • Pump housing be axially supported, in advantageous variants of the third embodiment, in which the pump housing, the mounting structure and the outlet seal form a preassembled mounting unit, the pump housing are axially movable on the mounting structure and the outlet seal is axially movable on before installation at the installation location
  • the pump is arranged in a receiving shaft of the receiving device, in particular a bottom of the receiving shaft can form the connecting wall.
  • the axial mobility of the outlet seal together with the pump housing relative to the mounting structure and / or relative to the pump housing, in combination with the axial pressing force that can be generated by the pressing device, ensures to an increased degree that the outlet seal despite the pressure outlet and the pressure connection of the receptacle despite the direction Component tolerances and / or installation tolerances of the receiving device and the pump and / or thermally induced changes in geometry and / or pressure-related axial movements of the pump housing as a whole or parts of the pump housing reliably seals.
  • Pump housing and the mounting structure in preferred embodiments together a thrust joint, in which the mounting structure guides the pump housing axially movable. If the outlet seal is axially movable relative to the pump housing, in preferred embodiments the pump housing and the outlet seal form a thrust joint in which the pump housing guides the outlet seal in an axially movable manner. In versions in which the pump housing relative to the mounting structure and the outlet seal relative to the
  • Pump housings are each axially movable, both thrust joints can be realized. In simple and, not least, therefore advantageous designs, either only the pump housing can be moved axially relative to the mounting structure or only the outlet seal can be moved axially relative to the pump housing.
  • the pressing device can comprise a spring device, which also includes the case that the pressing device is a spring device, ie from a
  • Spring device exists.
  • the spring device can act pneumatically and / or mechanically.
  • a mechanical spring device with one or more springs is preferred.
  • the pressing force can be generated hydraulically, i.e. H. the pressing device can be formed as a purely hydraulic pressing device.
  • the pressure device can in
  • the pump housing can be mounted with an axial pretension, thereby ensuring that the outlet seal is always pressed into an axial sealing contact with pretensioning force and the first end wall and / or the second end wall are pressed axially in the direction of the peripheral wall.
  • the tightness can hereby be ensured at a standstill and thus immediately when the pump starts up, for example during a first start or a cold start.
  • the pressure force can be increased during operation of the pump, for example to compensate for a pressure in the delivery chamber on the high pressure side, which increases with the rotor speed, and the tightness of the pump housing and the sealing function of the outlet seal even at high speeds of the rotor and / or to ensure pressure peaks due to pressure pulsation.
  • the pressing device comprises a spring device and a hydraulic pressing device which is operated with pressurized fluid from the high pressure side of the pump
  • the spring device can be arranged with a pretensioning force which is sufficiently large to ensure tightness in the lower speed range in the warm operating state, i.e. with low-viscosity pressure fluid.
  • the preload force can be so low that the outlet seal during a cold start and so on
  • the pressure force of the spring device lifts out of the sealing contact in order to reduce a pressure peak that typically occurs during a cold start.
  • the pressure device comprises a spring device arranged with pretension, this is .
  • the pump housing and the mounting structure can be used with one another or together with the receiving device to implement the hydraulic pressing device form a piston-cylinder unit with the pump housing as a piston.
  • the hydraulic pressure acts on the pump housing and is axially supported on the mounting structure.
  • the mounting structure surrounds the cylinder space of the piston-cylinder unit on the outer circumference, that is, encloses the cylinder space on the circumference, so that the pump housing and the
  • Assembly structure alone together form the piston-cylinder unit.
  • the cylinder space it is in principle also possible for the cylinder space to be obtained only in combination with the receiving device, in that the receiving device surrounds the cylinder space and delimits its circumference.
  • the outlet seal is axially movable relative to the pump housing and the pressure device acts between the pump housing and the outlet seal
  • the outlet seal is supported in the axial direction via the pressure device on the pump housing.
  • the pressing device is a spring device with one or more mechanical springs or at least comprises such a mechanical spring device.
  • the outlet seal which is axially movable relative to the pump housing, can act as a radial seal with respect to the pump housing and can seal the pressure outlet in cooperation with a peripheral wall of the pump housing surrounding the pressure outlet by forming a radial sealing gap with the peripheral wall of the pump housing.
  • the axially movable outlet seal maintains the sealing gap with said peripheral wall of the pump housing over the axial distance of its mobility.
  • the mounting structure can be an integral part of the pump housing, for example of second end wall are formed. In preferred embodiments, however, the mounting structure is manufactured separately from the pump housing and forms a preassembled mounting unit with the pump housing, in which the pump housing is axially movable relative to the mounting structure.
  • the circumferential wall of the pump housing can be formed together with the first end wall or instead together with the second end wall in a process of primary shaping, optionally with post-processing.
  • the peripheral wall, the first end wall and the second end wall are three separately shaped parts which are arranged axially next to one another.
  • the pump housing is constructed in layers. The end walls are pressed axially in the direction of the peripheral wall at least in the assembled state of the pump in order to tightly enclose the delivery chamber apart from a delivery chamber inlet on the low pressure side and a delivery chamber outlet on the high pressure side.
  • the first end wall is preferably located directly on a first end side of the
  • peripheral wall and the second end wall are arranged directly on the opposite end face of the peripheral wall and are pressed axially against the peripheral wall, at least in the assembled state of the pump.
  • the pump housing and the mounting structure form a preassembled pump unit, i. H. an assembly unit.
  • the pump comprises a securing device with one or more holders, which ensures or together ensure the cohesion of the preassembled components of the pump.
  • the assembly unit comprises at least the peripheral wall, the first
  • Outlet seal is a pre-assembled part of the assembly unit. So it can
  • the holder or the plurality of holders of the securing device can be in a holding engagement with the first end wall and hold the pump housing together in the preassembled state.
  • the outlet seal can be held on the first end wall by means of a plug connection when the holding engagement is formed with the first peripheral wall. Is the outlet seal with the holder or the multiple holders of the Safety device in the holding engagement, it can additionally be held on the first end wall by means of a plug connection.
  • the pressing device is expediently an integrated part of the
  • assembly structure is a component of the pump in addition to the pump housing, this assembly structure can also be a preassembled part of the
  • Assembly unit It is advantageous if the components of the assembly unit are held in position relative to one another by means of the securing device such that the
  • Mounting structure must be axially fixed to the receiving device in order to
  • Assembly unit The provision of the aforementioned components of the pump in the form of an assembly unit facilitates installation at the destination, i. H. the attachment to the receiving device. This is particularly beneficial for series production, as the
  • Pump components are not individually delivered to series production and only there as part of the assembly, for example the series assembly of motors or gearboxes.
  • the pump can be designed with only a single work flow, that is to say a single flow.
  • the pump is of multi-flow design, for example double-flow, and accordingly has a first work flow and at least one further, second Flood of work.
  • the pressure outlet can be a pressure outlet common to the several working flows and the pump can accordingly be a multi-flow single circuit pump.
  • the pump in a multi-flow design is also designed as a multi-circuit pump and accordingly has, for different working floods, sealed, ie separate, pressure outlets.
  • the pressure outlet already explained is a first pressure outlet only for the first working flood of the pump, while the pump for the at least one further, second working flood has its own, second pressure outlet, and these at least two pressure outlets are fluidly separated from one another.
  • the outlet seal can be shaped as a sealing unit which separates these two pressure outlets from one another and also from the low-pressure side of the pump.
  • the outlet seal faces the second pressure outlet
  • the pump has a first flood of work with the first pressure outlet and a second
  • the outlet seal can have a first sealing web for the first pressure outlet and a second sealing web for the second pressure outlet.
  • the first sealing web surrounds the first pressure outlet in a sealing manner and separates the first pressure outlet from the low-pressure side of the pump and the second pressure outlet.
  • the second sealing web surrounds the second pressure outlet and separates the second pressure outlet from the low pressure side of the pump and the first pressure outlet.
  • the first sealing web and the second sealing web are connected to form a unit, they are preferred
  • the outlet seal comprises a carrier structure made of, for example, a metallic material or plastic and a sealing structure made of a sealing material suitable for fulfilling the sealing function, such as
  • a rubber for example a rubber or, expediently, an elastomer material.
  • Sealing material forms at least one sealing web running around the pressure outlet.
  • the sealing structure formed from the sealing material comprises the first sealing web and the second sealing web.
  • the sealing structure can, for example, be shaped as a protruding sealing flange or comprise such a sealing flange.
  • the support structure can have one or more passages, so that the support structure for the respective one
  • Pressure outlet forms a kind of aperture, for example pinhole.
  • Carrier structure can flow in the transition area between the pressure outlet and
  • the shape of the support structure can in particular be sheet-like, i. H. be an areal thin structure. It can simply be flat in the form of a disk, more preferably it has the shape of a flat cover or is three-dimensionally curved with one or more sealing flange (s) each acting as a sealing web and a bulge protruding from the respective sealing flange.
  • Sealing material, and / or the special design of the outlet seal for use as an outlet seal of a multi-circuit, for example two-circuit pump, are used in preferred embodiments in combination with the features of a pump according to the invention.
  • these features are also fundamentally advantageous, that is to say also in the case of a pump in which the described axial relative mobility is not realized and / or an inventive one
  • the subject of a separate application can also be an outlet seal as such, which is suitable for sealing a first flood and a second flood of a multi-circuit pump, preferably a rotary pump, and / or has a support structure which serves not only to support the sealing structure but also above it is also designed as a flow resistance to withstand pressure peaks at
  • the outlet seal is intended to separate a first work flow and a second work flow of the pump from each other and from a low pressure side of the pump can. It should therefore perform a first sealing function in relation to the first flood of work and a second sealing function in relation to the second flood of work, but can nevertheless be easily installed.
  • Pressure peaks can typically occur during a cold start with viscous pressure fluid.
  • Another task is to create a pump with a multifunctional outlet seal.
  • the outlet seal for sealing an outlet area of a multi-circuit pump has a sealing structure made of a sealing material.
  • the outlet area comprises a first pressure outlet and a second pressure outlet, which are fluidly separated from one another and also from one each by means of the outlet seal
  • the sealing structure comprises a first sealing web, which has a first one which is provided for the first pressure outlet
  • Pressure outlet provided, in the plan view laterally next to the first fluid passage framed second fluid passage of the outlet seal in the plan view.
  • the outlet seal includes a
  • the outlet seal also includes a support structure, but the
  • the sealing webs are made of
  • Sealing material is coherently shaped so that it is uniform
  • the outlet seal includes in addition to Sealing structure made of sealing material no support structure. All versions have in common that the outlet seal is provided as a mountable unit.
  • the fluid passages can each have a major axis in the axial plan view and a minor axis in the transverse direction orthogonal to the major axis and a greatest longitudinal extent parallel to the major axis and a greatest transverse extent parallel to the minor axis, the greatest longitudinal extent being greater than the greatest transverse extent.
  • the top view of the fluid passages can be oval or, in particular, each D-shaped and can be arranged next to one another in the transverse direction.
  • an outer face of a pump housing which is at least substantially circular in the axial plan view can be used for the most part for the at least two fluid passages. If the fluid passages are D-shaped, their flat long sides are in the transverse direction
  • the sealing webs are shaped such that they can form an axial seal in the assembled state with an external connection wall provided at the installation location of the pump.
  • the sealing webs or only one of the sealing webs can also have an axial seal based on axial sealing contact with an axial end face of the pump housing, or one on a radial one
  • sealing webs or, if appropriate, only one of the sealing webs with the pump housing can form both an axial seal and a radial seal.
  • the sealing structure can be arranged immovably on a pump housing relative to the latter or can be provided for such an arrangement. In such designs, it can be arranged, for example, in a correspondingly shaped receiving groove and / or can be integrally joined to the pump housing. In these versions, the sealing structure alone can form the outlet seal from the sealing material. In such designs, the outlet seal does not have to have a support structure. However, it can also be provided for an arrangement that is axially movable relative to a housing of the pump. Is the outlet seal for axial mobility relative to the
  • pump housing or axially movably arranged on a pump housing, it can be shaped on its inner end face axially facing the pump housing be that it cooperates with an end face of the pump housing as an axial seal. Instead or in addition, it can act as a radial seal with a peripheral surface of the pump housing, preferably an inner peripheral surface, which always remains in radial sealing contact with the peripheral surface of the pump housing over the axial distance of the relative mobility.
  • Outlet seal comprises a support structure in addition to the sealing webs made of sealing material, around the sealing webs relative to one another and during assembly relative to the
  • the outlet seal is designed in such a way that it is held on the pump housing in a preassembled state of the pump by means of a plug connection in the area of the sealing webs.
  • the plug connection or the frictional engagement is designed such that the outlet seal can be moved axially relative to the pump housing in the preassembled state of the pump and preferably also in the assembled state of the pump, even if the
  • the outlet seal acts as a pure axial seal, and even more so when the outlet seal is only or primarily intended for radial sealing contact with the pump housing.
  • Pump for supplying a unit, for example a transmission, with a pressure fluid comprising:
  • a pump housing (1) with a peripheral wall (2) which surrounds a delivery chamber (5) of the pump, a first end wall (3) and a second end wall (4; 40) which delimit the delivery chamber (5) on their end faces, 1.2 a rotor (10) which is rotatable in the delivery chamber (5) about an axis of rotation (R) to form delivery cells which increase and decrease periodically as the rotor (10) rotates, to pressurized fluid from a low-pressure side of the pump to a high-pressure side of the pump to promote,
  • a pressure outlet (8) which opens at an outer end face of the first end wall (3) facing away from the delivery chamber (5) and can be removed from the delivery chamber (5) by the pressure fluid
  • the pump housing (1) can be mounted on a receiving device (35) by means of a mounting structure (20; 40, 41) and the mounting structure (20; 40, 41) is a component of the pump or the receiving device (35).
  • the pump housing (1) can be mounted on the receiving device (35) by means of the mounting structure (20; 40, 41), so that the first end wall (3) of a connecting wall (37) of the receiving device ( 35) is axially facing.
  • the mounting structure (20) having an axial cylindrical guide (23) which surrounds the pump housing (1) in the region of the second end wall (4), preferably only the second end wall (4) and the pump housing (1) leads axially movable.
  • Aspect 4 Pump according to one of the preceding aspects, wherein the mounting structure (20) surrounds the pump housing (1) and / or the pump housing (1) the mounting structure (20) in the region of the second end wall (4) with an axial overlap and the mounting structure ( 20) the pump housing (1) in the area of the overlap in a sliding contact axially movable.
  • Pump housing (1) as a piston and the mounting structure (20) as a cylinder.
  • Pump for supplying a unit, for example a transmission, with a pressure fluid the pump preferably being formed according to one of the preceding claims, the pump comprising:
  • a pressure outlet (8) which opens on an outer end face of the first end wall (3) facing away from the delivery chamber (5) and can be removed from the delivery chamber (5) by the pressure fluid
  • the pump is optionally multi-flow and a first flood with the pressure outlet as the first pressure outlet (8) and a second flood with a second pressure outlet (9) which is located on the outer end face of the first end wall (3) next to the first pressure outlet (8) flows, exhibits, and
  • the pump housing (1) being mountable to a receiving device (35) by means of a mounting structure (20; 40, 41) and the mounting structure (20; 40, 41) being a component of the pump or the
  • Aspect 8 Pump according to one of the preceding aspects, the mounting structure (20) guiding or guiding the pump housing (1) and / or the pump housing (1) in an axially movable manner.
  • Aspect 9 Pump according to one of the preceding aspects, wherein the pump housing (1) with the mounting structure (20) and / or with the outlet seal (44) forms a thrust joint (1, 20; 1, 44) with axial mobility or in each case.
  • Aspect 10 Pump according to one of the preceding aspects, further comprising a pressing device (30; 45) for applying an axial pressure force to the outlet seal (14; 44) for pressing the outlet seal (14; 44) against one in the assembled state of the outer end face of the first end wall (3) axially
  • the pump housing (1) is axially movable relative to the mounting structure (20) and is axially supported on the mounting structure (20) via the pressing device (45) and / or
  • the outlet seal (44) is axially movable relative to the pump housing (1) and is axially supported on the pump housing (1) via the pressing device (45).
  • Aspect 12 Pump according to one of the two immediately preceding aspects, wherein the pump housing (1) is or can be moved axially relative to the mounting structure (20) and / or the outlet seal (44) relative to the pump housing (1) and the
  • Outlet seal (44) is axially supported by the push-on device (45) on the mounting structure (20; 41).
  • Aspect 13 Pump according to one of the preceding aspects in combination with aspect 10, wherein the pressing device (30; 45) a pressure chamber (31) for generating the pressing force by means of hydraulic pressure and / or a spring device (33; 45) for generating the pressing force by means of Includes spring force.
  • Aspect 14 Pump according to the preceding aspect, wherein the spring device (33) is arranged in the pressure chamber (31).
  • the pressing device (30; 45) comprises a spring device (33; 45) which extends in the axial direction between the pump housing (1) and the mounting structure (20) or between the pump housing (1) and the outlet seal (44) act to generate a spring force which forms at least part of the pressing force.
  • the spring device (33; 45) comprises at least one spring supported on an end wall (21) of the mounting structure (20) or on the first end wall (3) of the pump housing (1), wherein the at least one spring is preferably supported directly on the end wall (21) of the mounting structure (20) or the first end wall (3) of the pump housing (1).
  • the pressure device (30) comprises a pressure chamber (31) which is axially delimited by the pump housing (1) and can be acted upon by pressure fluid on the high pressure side, so that a pressure Pressure chamber (31) generates pressure axially acting away from the mounting structure (20) on the pump housing (1).
  • Aspect 18 Pump according to the preceding aspect, wherein an end wall (21) of the mounting structure (20) axially delimits the pressure chamber (33).
  • Aspect 19 Pump according to one of the preceding aspects in combination with aspect 13, wherein the pressure chamber (31) is permanently connected to the high pressure side of the pump or connected to a check valve or control valve and can be connected via the check valve or control valve to the high pressure side of the pump and from this is separable.
  • Aspect 20 Pump according to one of the preceding aspects in combination with aspect 13, wherein the pressure chamber (31) is connected to a check valve or control valve and the pressure can be relieved via the check valve or control valve.
  • Aspect 21 Pump according to one of the preceding aspects in combination with aspect 13, wherein the pressure chamber (31) inside the pump housing (1) with the
  • High pressure side of the delivery chamber (5) is connected.
  • the outlet seal (14) to the pump housing (1) acting as an axial seal, which bears against an outer end face of the first end wall (3) and an axial one with the outer end face of the first end wall (3) Forms a sealing gap which surrounds the pressure outlet (8) or the first pressure outlet (8).
  • Aspect 24 Pump according to one of the preceding aspects, the outlet seal (44) to the pump housing (1) acting as a radial seal which is connected to a
  • the inner circumferential surface of the first end wall (3) forms a radial sealing gap in sliding contact, which surrounds the pressure outlet (8) or the first pressure outlet (8).
  • Aspect 25 Pump according to one of the preceding aspects, wherein the first end wall (3) of the pump housing (1) surrounds the outlet seal (44) and / or the outlet seal (44) the first end wall (3) of the pump housing (1) with an axial overlap and the pump housing (1) guides the outlet seal (44) axially movably in the region of the overlap in a sliding contact.
  • the pump having a multiple flow and having a first flow with the pressure outlet as the first pressure outlet (8) and a second flow with a second pressure outlet (9) which is on the outer end face of the first end wall (3) opens next to the first pressure outlet (8).
  • first sealing web (18) sealingly surrounds the first pressure outlet (8) and from which
  • Low pressure side of the pump and the second pressure outlet (9) separates and the second Sealing web (19) surrounds the second pressure outlet (9) and separates it from the low pressure side of the pump and the first pressure outlet (8).
  • Aspect 29 Pump according to the preceding aspect, wherein the sealing webs (18, 19) are connected to one another, preferably formed together as a unit.
  • the first end wall (3) of the pump housing (1) having a passage in a radially central region for mounting a drive shaft (12) of the rotor (10) and / or for lubricating oil for lubricating the drive shaft ( 12) and the first sealing web (18) separates the first pressure outlet (8) from the passage and the second sealing web (19), if present, separates the second pressure outlet (9) from the passage.
  • Aspect 31 Pump according to one of the three immediately preceding aspects, the first sealing web (18) and the second sealing web (19) having a common one
  • Sealing web section (18a) having an inner end near the axis of rotation (R) and a peripheral end remote from the axis of rotation (R) and the common sealing web section (18a) extends between the first pressure outlet (8) and the second pressure outlet (9).
  • the outlet seal (14; 44) being a sealing structure (16) made of a flexible sealing material, for example a rubber or elastomer material, for sealing the pressure outlet (8) and / or the second pressure outlet (9 ), if available.
  • the outlet seal (14; 44) comprising a support structure (15), preferably a three-dimensionally curved, thin support structure (15), and a seal structure (16) connected to the support structure (15) Sealing material, for example a rubber or elastomer material, for sealing the pressure outlet (8) and / or the second pressure outlet (9), if present, comprises.
  • Aspect 34 Pump according to the preceding aspect, wherein the support structure (15) axially opposite one or more passages (15e), preferably a plurality of hole-like passages (15e), to the pressure outlet (8) and / or the second pressure outlet (9), if present. , so that the support structure (15) has a
  • Pressure outlet (9) from the delivery chamber (5) forms flowing pressure fluid.
  • Aspect 35 Pump according to one of the two immediately preceding aspects, the sealing material being injection-molded onto the carrier structure (15) in the form of the sealing structure (16) in an injection molding process or the carrier structure (15) in one Injection molding process with the sealing material in the form of the sealing structure (16) is encapsulated.
  • the outlet seal (14; 44) being arranged on an outer end face of the first end wall (3) of the pump housing (1) and in an axial top view the pressure outlet (8) and / or the second Pressure outlet (9), if present, surrounds the outer end face of the first end wall (3).
  • the outlet seal (14) axially abutting an outer end face of the first end wall (3) of the pump housing (1), around the first pressure outlet (8) and / or the second pressure outlet (9) seal, if present, in an axial sealing contact with the first end wall (3).
  • Aspect 38 Pump according to one of the preceding aspects, wherein the outlet seal (14 ') surrounds an outer circumferential surface of the pump housing (1) surrounding the pressure outlet (8) and / or the second pressure outlet (9), if present, in an all-round manner to seal the respective pressure outlet (8, 9) in a radial sealing contact with the pump housing (1).
  • Aspect 39 Pump according to one of the preceding aspects, wherein the first end wall (3) of the pump housing (1) has a depression (3a) or first depression (3a) on an outer end face, the pressure outlet (8) or the first pressure outlet (8) opens into this recess (3a) and the outlet seal (14; 44) protrudes into this recess (3a).
  • Aspect 41 Pump according to one of the two immediately preceding aspects, wherein the outlet seal (14) forms an axial sealing gap surrounding the pressure outlet (8) or first pressure outlet (8) and the depression (3a) or first depression (3a), around which Seal pressure outlet (8) or first pressure outlet (8).
  • the outlet seal (44) forming, with an inner circumferential surface of the depression (3a) or first depression (3a), a radial sealing gap surrounding the pressure outlet (8) or the first pressure outlet (8), around the pressure outlet (8) or first
  • Aspect 43 Pump according to one of the four immediately preceding aspects, wherein the first end wall (3) of the pump housing (1) has a further, second depression (3b) on the outer end face, the second pressure outlet (9) into the second depression (3b ) opens and the outlet seal (14; 44) protrudes into the second recess (3b), is preferably inserted into the second recess (3b).
  • Aspect 45 Pump according to one of the two immediately preceding aspects, the outlet seal (14) forming an axial sealing gap surrounding the second pressure outlet (9) and the second depression (3b) in order to seal the second pressure outlet (9).
  • Aspect 46 Pump according to one of the three immediately preceding aspects, the outlet seal (44) with an inner circumferential surface of the second depression (3b) forming a further radial sealing gap surrounding the second pressure outlet (9) in order to seal the second pressure outlet (9).
  • Pump for supplying an assembly, for example a transmission, with a pressure fluid the pump preferably being formed according to one of the preceding claims, the pump comprising:
  • a pump housing (1) with a peripheral wall (2) which surrounds a delivery chamber (5) of the pump, a first end wall (3) and a second end wall (4; 40) which delimit the delivery chamber (5) on their end faces,
  • a rotor (10) which is rotatable in the delivery chamber (5) about an axis of rotation (R) to form delivery cells which increase and decrease periodically as the rotor (10) rotates, to supply pressure fluid from a low-pressure side of the pump to a high-pressure side of the pump to promote,
  • a pressure outlet (8) which opens at an outer end face of the first end wall (3) facing away from the delivery chamber (5) and can be removed from the delivery chamber (5) by the pressure fluid
  • Pump for supplying a unit, for example a transmission, with a pressure fluid the pump preferably being formed according to one of the preceding claims, the pump comprising:
  • a pump housing (1) with a peripheral wall (2) which surrounds a delivery chamber (5) of the pump, a first end wall (3) and a second end wall (4; 40) which delimit the delivery chamber (5) on their end faces,
  • a rotor (10) which is rotatable in the delivery chamber (5) about an axis of rotation (R) to form delivery cells which increase and decrease periodically as the rotor (10) rotates, to supply pressure fluid from a low-pressure side of the pump to a high-pressure side of the pump to promote,
  • a pressure outlet (8) which opens at an outer end face of the first end wall (3) facing away from the delivery chamber (5) and can be removed from the delivery chamber (5) by the pressurized fluid
  • a resistance structure (15) which is provided on the outer end face of the first end wall (3) immediately downstream of the pressure outlet (8) in order to form a flow resistance for pressure fluid flowing out of the pressure outlet (8) to reduce pressure peaks,
  • Assembly unit holds together axially.
  • the resistance structure (15) being part of the outlet seal (14; 44) and in particular being able to form the support structure (15) described in one of the aspects 33 to 35, 77, 102 and 103.
  • Aspect 50 Pump according to aspect 48, the resistance structure (15) being provided separately from the outlet seal (14; 44).
  • Pump for supplying a unit, for example a transmission, with a pressure fluid the pump preferably being formed according to one of the preceding claims, the pump comprising: 51.1 a pump housing (1) with a peripheral wall (2) which surrounds a delivery chamber (5) of the pump, a first end wall (3) and a second end wall (4; 40) which delimit the delivery chamber (5) on their end faces,
  • a rotor (10) which is rotatable in the delivery chamber (5) about an axis of rotation (R) to form delivery cells, which increase and decrease periodically as the rotor (10) rotates, to supply pressure fluid from a low-pressure side of the pump to a high-pressure side of the pump to promote,
  • a pressure outlet (8) which opens at an outer end face of the first end wall (3) facing away from the delivery chamber (5) and can be removed from the delivery chamber (5) by the pressure fluid
  • a holder (27) which is in a holding engagement with the first end wall (3) and which holds the peripheral wall (3) and the end walls (2, 4) and the mounting structure (20; 40, 41), if this is in addition to the second end wall ( 4) is provided, positioned relative to one another and pre-assembled by means of the holding engagement
  • Assembly unit holds together axially.
  • Aspect 52 Pump according to one of the preceding aspects, the outlet seal (14; 44) being connected to the first end wall (3) in an axially frictional manner by means of a plug connection.
  • Aspect 53 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein the holder (27) the peripheral wall (3) and the
  • Aspect 54 Pump according to the preceding aspect, the outlet seal (14 ′′) being connected in a loose connection only to the first end wall (3 ′′) by means of the plug connection.
  • Aspect 55 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein the holder (27) in the axial direction of the Assembly structure (20), if this is additionally provided, or the second end wall (40) protrudes into the holding engagement and is preferably immovably connected to the assembly structure (20), if this is additionally provided, or the second end wall (40).
  • Aspect 56 Pump according to one of the preceding aspects in combination with one of the aspects 47, 48 and 51, the holder (27) engaging behind the outlet seal (14; 44) in the holding engagement with respect to the axial direction and thereby axially holding the assembly unit together.
  • Aspect 58 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein the holder (27) holds the outlet seal (14; 44) in holding engagement from the side, namely an outer circumference and / or an inner circumference the outlet seal (14; 44), with respect to the axial direction.
  • Aspect 59 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein an engagement element (15d; 16d) of the outlet seal (14; 44) and an engagement counter-element (29) of the holder (27) in the holding engagement are.
  • Aspect 61 Pump according to one of the two immediately preceding aspects, wherein the engagement element (15d; 16d) holds a barb for the
  • Aspect 62 Pump according to one of the three immediately preceding aspects, wherein the engagement element (15d; 16d) and / or the engagement counter-element (29) is or are flexible in the radial direction against elastic restoring force, so that the respective elastic restoring force is applied when the holding engagement is produced radial yielding and then an automatic radial snap or widen the
  • Aspect 64 Pump according to one of the two immediately preceding aspects, wherein the mating engagement element of the holder is flexible in the radial direction against elastic restoring force.
  • Aspect 65 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein an engagement element (15d; 16d) of the outlet seal (14; 44) and an engagement counter-element (29) of the holder (27) in the holding engagement are and the holder (27) in an axial end portion, which comprises a free axial end of the holder (27), the mating element (29) in the form of a radial Abrag ung or circumferential radial widening (29).
  • Aspect 66 Pump according to one of the preceding aspects, wherein the holder (27) is elongated in the axial direction, preferably in the form of a pin or rod, has a free axial end and is axially close to the holding engagement at the free end or the free end.
  • Holding engagement on the first end wall (3) is frictionally held, preferably by means of an axial plug connection of the outlet seal (14; 44) and the first end wall (3).
  • Aspect 69 Pump according to one of the preceding aspects in combination with one of the aspects 47, 48 and 51, wherein the holding engagement consists of a frictional connection and / or a positive connection.
  • Aspect 70 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, the holder (27) following the peripheral wall (2) and the first end wall (3) in holding engagement with the outlet seal (14; 44) pointing downwards on the second end wall (40) or the pump housing (1) with the outlet seal (14; 44) pointing downwards on the mounting structure (20), if this is additionally provided, hanging against gravity in order to position the pump housing ( 1) on the receiving device (35).
  • Aspect 71 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, the holder (27) extending axially through the peripheral wall (2) of the pump housing (1), optionally also through the first end wall (3) and / or the second end wall (4) of the pump housing (1).
  • Aspect 72 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein the holder (27) the peripheral wall (2) and the
  • Aspect 73 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein a further holder (27), the holder (27) according to one of the preceding aspects, is provided accordingly and with the outlet seal (14; 44) is in a further holding engagement, the holder (27) the peripheral wall (3) and the end walls (2, 4) and the mounting structure (20; 40, 41), if this is provided in addition to the second end wall (4), relative to one another position and hold together axially by means of the respective holding engagement in a loose connection as a pre-assembled assembly unit.
  • Aspect 74 Pump according to one of the preceding aspects in combination with one of the aspects 47, 48 and 51, the peripheral wall (2) and / or the first end wall (3) and / or the outlet seal (14; 44) from the holder (27 ) is or will be guided axially.
  • Aspect 75 Pump according to one of the preceding aspects in combination with one of the aspects 47, 48 and 51, the mounting structure (20; 40, 41) on one
  • the outlet seal (14; 44) being a support structure (15) made of a support material, preferably a three-dimensionally curved, thin
  • a sealing material for example a rubber or elastomer material
  • outlet seal (14; 44) for sealing a first pressure outlet (8) and an optional second pressure outlet (9) of the pump has a sealing structure (16) made of a sealing material, the sealing structure (16 ) full: 77.1 a first sealing web (18) which surrounds a first fluid passage (18a) of the outlet seal (14; 44) provided for the first pressure outlet (8) in an axial plan view of the outlet seal,
  • a second sealing web (19) which, in plan view, frames a second fluid passage (19a) of the outlet seal (14; 44), which is optionally located laterally next to the first fluid passage (18a), and
  • a carrier structure (15) which is fixedly connected to the sealing structure (16) and which extends in plan view into the first fluid passage (18a) in order to provide a flow resistance in the region of the first fluid passage (18a) for through the first fluid passage (18a) to form flowing pressure fluid
  • Aspect 78 Pump according to one of the preceding aspects, wherein the pump housing (1) on the mounting structure (20) and / or the outlet seal (44) on the pump housing (1) is or are axially movable in the holding engagement.
  • Aspect 80 Pump according to the preceding aspect, wherein the second end wall (4) of the pump housing (1) forms the mounting structure (40, 41) or the mounting structure (20) is additionally provided and pre-assembled in position with respect to the pump housing (1) in the mounting unit .
  • Aspect 81 Pump according to one of the preceding aspects, the outlet seal (14; 44) being secured axially in a pre-assembled state relative to the pump housing (1) in a certain position, preferably being held in a form-fitting and / or frictional manner.
  • Aspect 82 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein the holder (27) extends axially through the first end wall (3) of the pump housing (1).
  • Aspect 83 Pump according to one of the preceding aspects in combination with one of the aspects 47, 48 and 51, the holder (27) extending axially through the second end wall (4) of the pump housing (1).
  • Aspect 84 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein the holder (27) extends axially through the peripheral wall (2) of the pump housing (1).
  • Aspect 85 Pump according to one of the preceding aspects in combination with one of aspects 47, 48 and 51, wherein the holder (27) guides the pump housing (1) in an axially movable manner.
  • the peripheral wall (2), the first end wall (3) and the second end wall (4) of the pump housing (1) being manufactured separately from one another and arranged axially next to one another, preferably in one loose axial face contact directly against each other.
  • Aspect 87 Pump according to one of the preceding aspects in combination with aspect 10, wherein the first end wall (3) of the pump housing (1) relative to the peripheral wall (2) and / or the second end wall (4) of the pump housing (1) relative to the peripheral wall
  • Aspect 89 Pump according to one of the preceding aspects, wherein the first end wall (3) of the pump housing (1) and / or the second end wall (4) of the pump housing (1) and / or an end wall (21) of the mounting structure (20) Mount the rotor (10) rotatably about the axis of rotation (R) or store together.
  • Aspect 90 Pump according to one of the preceding aspects, the mounting structure (20) sealingly surrounding the second end wall (4) of the pump housing (1), forming a radial sealing gap.
  • Aspect 91 Pump according to one of the preceding aspects, wherein the mounting structure (20) comprises one or more fastening elements (29) for fastening the pump to a receiving device (35).
  • Aspect 92 Pump according to one of the preceding aspects, wherein the mounting structure (20; 40, 41) is axially fixed to a receiving device (35), preferably an assembly to be supplied with the pressurized fluid, and the pressures in the direction (30; 45) the outlet seal (14; 44) against an axially facing connection wall (37) of the
  • the pump housing (1) projecting axially from the mounting structure (20) into a receiving shaft (36) of the receiving device (35).
  • Aspect 96 Pump according to one of the four immediately preceding aspects, wherein the receiving device (35) has a pressure channel which opens at the connection wall (37) to form a pressure connection (38) for the pressure outlet (8), and wherein the outlet seal (14; 44) surrounds the pressure outlet (8) of the pump housing (1) and the pressure connection (38) of the receiving device (35) in a sealing manner.
  • Receiving device (35) surrounds sealing.
  • the pump being a vane pump and comprising one or more vanes (11) which are coupled to the rotor (10) for rotary driving in order to form the delivery cells (6).
  • Gear pump is used to supply a gear with the pressure fluid as the working fluid and / or as a lubricant.
  • Aspect 100 Pump according to one of the preceding aspects, the pump being of
  • a drive motor of a vehicle or an electric motor provided in addition to the drive motor of the vehicle and serves to supply the drive motor and / or a transmission of the vehicle with the pressurized fluid as working fluid and / or as a lubricant.
  • Aspect 101 Pump according to one of the preceding aspects, wherein the pump is driven by a shaft of a device for generating electrical energy and serves to supply a transmission of the device with the pressure fluid as working fluid and / or as a lubricant.
  • Aspect 102 Pump according to one of the preceding aspects, a relief channel (5a) opening on an outer surface of the first end wall (3), preferably on the outer end surface of the first end wall (3), which connects the low-pressure side of the delivery chamber (5) with the connects external environment of the pump housing (1).
  • Aspect 103 Pump according to the preceding aspect, wherein the relief channel (5a) on the outer end face of the first end wall (3) next to the sealing web (18), in a multi-flow design of the pump in an axial top view, preferably between the first sealing web (18) and the second sealing web (19) opens.
  • Outlet seal used to seal a first pressure outlet (8) and a second pressure outlet (9) of a pump and to separate the first
  • Pressure outlet (8) from the second pressure outlet (9) has a sealing structure (16) made of a sealing material, the sealing structure (16) comprising:
  • Unit forms and / or the outlet seal (14; 44) comprises a support structure (15) on which the sealing webs (18, 19) are arranged.
  • Outlet seal which has a sealing structure (16) made of a sealing material for sealing a first pressure outlet (8) and an optional second pressure outlet (9) of a pump, the sealing structure (16) comprising:
  • a support structure (15) which is fixedly connected to the sealing structure (16) and which extends in the plan view into the first fluid passage (18a) to in the area of the first fluid passage (18a) to form a flow resistance for pressure fluid flowing through the first fluid passage (18a).
  • Sealing web (18) and the second sealing web (19) are each D-shaped in plan view, in each case a flat web section and one of the flat web section
  • Aspect 108 Outlet seal according to one of the two immediately preceding aspects, wherein the common sealing web section (17) extends in plan view from a peripheral section end in the direction of a central region of the outlet seal (14; 44) to a central section end.
  • Aspect 1 Outlet seal according to one of the two immediately preceding aspects, wherein the sealing webs (18, 19) diverge in plan view at the peripheral section end of the common sealing web section (17).
  • Aspect 1 Outlet seal according to one of the five immediately preceding aspects, the flat sealing web sections or the common sealing web section (17) extend or extends between the first fluid passage (18a) and the second fluid passage (19a).
  • Aspect 1 Outlet seal according to one of the six immediately preceding aspects, the first sealing web (18) and the second sealing web (19) running together in a B-shape in plan view.
  • Aspect 1 13 Outlet seal according to one of the seven immediately preceding aspects, the first sealing web (18) and the second sealing web (19) being arranged in a plan view, forming a passage (17a) remaining between the sealing webs (18, 19) at a distance from one another extend towards the periphery of the outlet seal (14; 44). Aspect 114. Outlet seal according to the preceding aspect, the first sealing web (18) and the second sealing web (19) being in a plan view from the central one
  • Sealing web section (17) pointing to form the passage (17a) at a distance next to each other in the direction of the periphery of the outlet seal (14; 44).
  • Aspect 1 Outlet seal according to one of the two immediately preceding aspects, the passage (17a) up to the periphery of the outlet seal (14; 44) being free of sealing material and open at the periphery or being closed by the sealing structure (16).
  • Aspect 1 Outlet seal according to one of the three immediately preceding aspects, wherein a longitudinal direction of the passage (17a) from the central region of the
  • Outlet seal (14; 44) points in the direction of the periphery and the passage (17a), measured transversely to the longitudinal direction, has a width which is less than a greatest width of the first fluid passage (18a) and less than a greatest width of the second
  • Sealing structure (16) with the support structure (15) is firmly connected and the support structure (15) extends in plan view in the first fluid passage (18a) and / or in the second fluid passage (18a, 19a) in the area of the respective
  • Fluid passage (18a, 19a) to form a flow resistance for pressure fluid flowing through the respective fluid passage (18a, 19a).
  • Fluid passage (19a) extends.
  • Outlet seal according to one of the preceding aspects, further comprising a third sealing web (16a) which, in plan view, shows a between the first
  • Fluid passage (18a) and the second fluid passage (19a) located, preferably central area of the outlet seal (14) framed tightly all around.
  • Aspect 120 Outlet seal according to the preceding aspect in combination with aspect 1-13, wherein the third sealing web (16a) is a section of the first sealing web (18) and comprises a section of the second sealing web (19) and surrounds the passage (17a) remaining between the first sealing web (17) and the second sealing web (18) tightly all around in the plan view.
  • Sealing material is injection-molded onto the carrier structure (15) in the form of the sealing structure (16) or the carrier structure (15) in one
  • Injection molding process with the sealing material in the form of the sealing structure (16) is encapsulated.
  • Sealing material is a rubber or elastomer material, preferably a
  • thermoplastic elastomer TPE
  • Carrier structure consists of a carrier material that has a higher strength and / or a higher hardness and / or a higher modulus of elasticity than the sealing material.
  • outlet seal (14; 44) preferably the support structure (15), a first flange (15a) and a first one projecting axially from the first flange (15a)
  • Fluid passage (18a) extends and
  • the first sealing web (18) extends along the end face axially facing away from the first bulge (15b), preferably also along the other end face, of the first flange (15a) and is firmly connected to the first flange (15a).
  • the outlet seal (14; 44), preferably the support structure (15), has a first flange (15a) and a first bulge (15b) protruding from the first flange (15a), •
  • the first flange (15a) extends around the first bulge (15b) and the first fluid passage (18a) and
  • Bulge (15b) comprises a firmly connected first peripheral region (18 ′′; 48) made of the sealing material in order to form a plug connection and / or a first radial sealing web (48) with a pump housing (1) when the outlet seal (44) is arranged.
  • the outlet seal (14; 44), preferably the support structure (15), has a second flange (15a) and a second bulge (15b) protruding from the second flange (15a),
  • the second flange (15a) extends around the second bulge (15b) and the second fluid passage (19a) and
  • the second sealing web (19) extends along the end face axially facing away from the second bulge (15b), preferably also along the other end face, of the second flange (15a) and is firmly connected to the second flange (15a).
  • the outlet seal (14; 44), preferably the support structure (15), has a second flange (15a) and a second bulge (15b) protruding from the second flange (15a),
  • the second flange (15a) extends around the second bulge (15b) and the second fluid passage (19a) and
  • Aspect 129 Outlet seal according to one of the aspects 104 to 124, the
  • Support structure (15 ') is lid-shaped or disk-shaped.
  • Aspect 130 Outlet seal according to one of the preceding aspects, wherein the
  • Outlet seal according to one of the preceding aspects in combination with a pressure device (45; 46; 47) acting as a spring, which is shaped to follow the course of the first sealing web (18) and / or the course of the second sealing web (19) at least in sections to the outlet seal (44) on a
  • Pressure device (45; 46; 47) is shaped as a pressure ring (45) or comprises a pressure ring (46a; 47a) and the pressure ring (45; 46a; 47a) can be placed axially on the outlet seal (44) and in the applied state in a top view
  • the course of the first sealing web (18) and, if present, also the second sealing web (19) follows at least in sections and covers the respective sealing web (18, 19).
  • Aspect 133 Outlet seal according to one of the two immediately preceding aspects, the pressing device (45; 46; 47) being able to be applied axially to the first sealing web (18) and, if present, also the second sealing web (19) and, in the applied state, being orthogonal spring axis pointing to the respective sealing web (18, 19).
  • Aspect 134 Outlet seal according to one of the three immediately preceding aspects, the pressing device (45; 46) being in axial alignment with the first sealing web (18) and, if present, also with the second sealing web (19) on one of the respective sealing web (18, 19 ) axially facing back one or more support points for an axial
  • Aspect 135. Outlet seal according to one of the preceding aspects, the
  • Carrier structure (15) is a three-dimensionally curved, thin shell structure made of a metal material or plastic material.
  • Carrier structure (15) is a sheet metal or plastic structure and
  • in particular can be a metal sheet or organic sheet.
  • Outlet seal (14; 44) of the pump according to one of the aspects 1 to 103 is used.
  • the invention is explained below using exemplary embodiments. Features which become apparent in the respective exemplary embodiment advantageously, individually and in each combination of features, further develop the subjects of the claims, the subjects of the aspects and also the embodiments explained above. One or more features that are or are disclosed in one of the exemplary embodiments may or may each be combined with one or more in another of the
  • Embodiments disclosed feature (s) can be combined as long as features of different embodiments are not mutually exclusive. Show it:
  • Figure 1 shows a pump of a first embodiment in an axial view of a
  • FIG. 3 shows the longitudinal section A-A of FIG. 1,
  • FIG. 4 shows the longitudinal section C-C of FIG. 1,
  • FIG. 5 shows a holding engagement to form a preassembled pump unit
  • FIG. 6 shows the preassembled pump unit in a view of an outlet seal
  • FIG. 7 shows a perspective view of an outer end face of the outlet seal
  • FIG. 8 shows a perspective view of an inner end face of the outlet seal
  • FIG. 9 shows the outlet seal in a longitudinal section
  • Figure 10 shows a modified holding engagement to form a pre-assembled
  • FIG. 11 shows a modified outlet seal in a top view
  • FIG. 12 shows a pump of a second exemplary embodiment in a longitudinal section
  • FIG. 13 shows a pump of a third exemplary embodiment in a longitudinal section
  • FIG. 14 the pressing device of the pump of the third exemplary embodiment
  • Figure 15 shows a modified pressure device for the pump of the third
  • FIG. 1 shows a pump of a first exemplary embodiment in an axial view of a pump housing 1.
  • a delivery chamber 5 is formed in the pump housing 1.
  • Pump housing 1 comprises a peripheral wall 2, which surrounds the delivery chamber 5, and End walls which axially limit the delivery chamber 5 on both end faces. One of the end walls is removed in FIG. 1, so that the view into the delivery chamber 5 is clear.
  • the pump is designed as a rotary pump and comprises a rotor 10 which can be rotated about an axis of rotation R in the delivery chamber 5 and a plurality of vanes 11 which are guided in the slots of the rotor 10 so as to be radially movable or at least essentially movable in the radial direction, as is customary in vane pumps is.
  • the peripheral wall 2 forms a
  • the wings 1 1 limit the conveying cells formed in the conveying chamber 5 in the circumferential direction.
  • the course of the guide surface of the circumferential wall 2 is selected such that the delivery cells periodically enlarge on a low-pressure side of the delivery chamber 5 when the rotor 10 rotates and decrease again on a high-pressure side of the delivery chamber 5 in order to contain a fluid that flows through an inlet on the low-pressure side of the Delivery chamber 5 in the
  • Delivery chamber 5 flows, with increased pressure to expel it as pressure fluid on the high pressure side of delivery chamber 5 through a pressure outlet located there.
  • the pump is set up to draw the fluid through the inlet, for example against gravity.
  • the pump comprises a mounting structure 20 which is connected to the
  • the mounting structure 20 serves to fix the pump to a receiving device, i. H. at the installation site.
  • the mounting structure 20 has a flange 21 which projects radially beyond the pump housing 1 and is provided with fastening elements 29 which are used for fastening to the
  • the fastening elements 29 can be passages, such as simple bores, for fastening means, for example fastening screws.
  • the pump is multi-flow, in the exemplary embodiment double-flow, that is, it has a first work flow and a second work flow.
  • the delivery chamber 5 has a first inlet 6 and a first pressure outlet at 8a for the first working flood and a second inlet 7 and a second pressure outlet at 9a for the second working flood.
  • the rotor 10 rotates counterclockwise in Figure 1, which is indicated by a Direction of rotation arrow is indicated.
  • 8a denotes a first passage which extends axially through the peripheral wall 2 on the high pressure side of the first working flood and 9a denotes a second passage which extends axially through the peripheral wall 2 on the high pressure side of the second working flood.
  • the pressure passages 8a and 9a are each connected to associated pressure outlets of the first end wall 3, as will be explained below with reference to FIG. 2.
  • Figure 2 shows the separately manufactured components of the pump in a perspective view along the axis of rotation R ( Figure 1) one behind the other and relative to each other for the
  • the peripheral wall 2 forms a closed ring, while the end walls 3 and 4 are plate-shaped.
  • the peripheral wall 2 In a first angular range over which the low-pressure side of the first flood of work extends, the peripheral wall 2 has a recess on both end faces in order to form the first inlet 6. Furthermore, the peripheral wall 2 has a different angular range over which the
  • each has a second recess on both end faces to form the second inlet 7.
  • the fluid can flow into the delivery chamber 5 (FIG. 1) via the end recesses, that is to say via the first inlet 6 and the second inlet 7.
  • the peripheral wall 2 has in the angular range of
  • Inlet 6 and inlet 7 also have recesses on their outer circumference, which each extend axially from one end-side recess to the axially opposite one another.
  • the recesses on the circumference connect the two end recesses of the first inlet 6 and on the opposite side the two end recesses of the second inlet 7, so that a comparative
  • first inlet 6 and a likewise large-volume second inlet 7 can be obtained.
  • the end walls 3 and 4 are each provided with associated recesses 6a and 6b in order to enlarge the flow cross section of the inlet 6.
  • the second inlet 7 the conditions are the same, only the recess 7a of the first end wall 3 being recognizable in FIG. 2 and the corresponding recess in the second
  • End wall 4 is covered.
  • a first pressure outlet 8 extends through the first end wall 3 in an angular range over which the high-pressure side of the first working flood extends and a second pressure outlet 9 extends in an angular range over which the high-pressure side of the second working flood extends the first pressure outlet 8 axially
  • first recess is connected to the first pressure outlet 8 via the first passage 8a of the peripheral wall 2 and the second recess is connected to the second pressure outlet 9 via the second passage 9a.
  • the pressure fluid is thus displaced in the pump mode on the front side of the delivery chamber 5, on which the second end wall 5 is arranged, and from there passes through the two passages 8a and 9a of the peripheral wall 2 into the pressure outlet 8 or 9 of the work flow concerned and becomes over the concerned
  • the first pressure outlet 8 and the second pressure outlet 9 are on the outer end face of the first end wall 3 axially facing away from the peripheral wall 2 by means of a
  • Outlet seal 14 sealed against each other and against the low pressure side of the pump.
  • the outlet seal 14 is provided as a seal unit. It comprises a carrier structure 15 made of a carrier material and a sealing structure 16 made of a sealing material which, in advantageous embodiments, is more flexible than the carrier material.
  • the support structure serves as a support for the sealing material, thus gives the sealing material a hold and also serves to correctly position the sealing material relative to the pump housing 1.
  • the carrier material can be a metal, for example an alloy and in particular steel, or a plastic material, including plastic composite material.
  • Sealing material can be resilient so that it contacts a press in one press
  • the sealing material can be an elastomer material or, for example, rubber. It can be used to fulfill the
  • Seal material can be used.
  • the sealing material is preferred! a thermoplastic elastomer (TPE).
  • FIG. 3 shows the pump of the first embodiment in the preassembled state in longitudinal section A-A of Figure 1.
  • the pump housing 1 includes those already mentioned
  • Wall structures namely the peripheral wall 2, the first end wall 3 and the second
  • End wall 4 which together delimit the delivery chamber 5 over its circumference and axially on its end faces.
  • the end walls 3 and 4 are each with axial contact on the Circumferential wall 2.
  • the peripheral wall 2 can be joined to the end walls 3 and 4 in particular loosely, ie without a material bond.
  • the rotor 10 is non-rotatably connected to a drive shaft 12.
  • the drive shaft 12 passes through the end walls 3 and 4 and also the mounting structure 20.
  • a drive wheel 13 is arranged so as to be non-rotatable relative to the drive shaft 12.
  • the drive wheel 13 forms an axial end of the drive shaft 12.
  • the drive wheel 13 is a drive wheel for a belt drive of the drive shaft 12 and thus together of the rotor 10.
  • the drive wheel 13 can also be a chain wheel for a chain drive or a gear wheel for a gear drive of the drive shaft 12.
  • the shaft passage of the assembly structure 20 is sealed by means of a shaft seal 26.
  • the pump housing 1 is axial relative to the mounting structure 20, i. H. movable back and forth parallel to the axis of rotation R and is linearly guided by the mounting structure 20 within the scope of its relative axial mobility.
  • the pump housing 1 and the mounting structure 20 in the region of the second end wall 4 are in an axial
  • the mounting structure 20 and the end wall 4 form a thrust joint, advantageously with a guide sliding engagement and the degree of freedom of the axial one
  • the axial mobility serves to compensate for component and / or installation tolerances and / or thermal changes in geometry and / or axial movements which can result from changes in the delivery pressure. So that the rotor 10 can follow axial compensation movements, the rotor 10 can be in one
  • Anti-rotation engagement with the drive shaft 12 relative to the drive shaft 12 and / or the drive shaft 12 can be axially movable relative to the mounting structure 20.
  • the first end wall 3 and / or the second end wall 2 can be axially movable relative to the drive shaft 12.
  • the mounting structure 20 has an end wall 21 which extends radially over the
  • Pump housing 1 protruding area forms the flange already mentioned for fixing the pump at the installation site.
  • An inner collar 22 and outer collar 23 project axially from the end wall 21.
  • the outer collar 23 completely surrounds the pump housing 1 in the region of the second end wall 4 about the axis of rotation R, ie over 360 °.
  • the inner collar 22 surrounds the drive shaft 12. It forms a shaft bushing.
  • the inner collar 22 also extends completely, ie over 360 °, around the axis of rotation R.
  • the inner collar 22 and the outer collar 23 delimit a recess of the assembly structure 20 that is open toward the pump housing 1.
  • the pump housing 1 projects into this annular recess in the region of the second end wall 4 and is used to form the
  • the pump housing 1 can be guided axially on the inner collar 22 and / or on the outer collar 23.
  • the pump comprises a pressing device 30.
  • Pressing device 30 serves to generate an axial pressing force with which the
  • FIG. 4 shows the pump in the assembled state, the pump as such being shown in section C-C of Figure 1.
  • the pump is arranged on a receiving device 35.
  • the arrangement is such that in the assembled state the pump projects with the outlet seal 14 forward into a receiving shaft 36 of the receiving device 35.
  • the mounting structure 20 serves at least for the axial fixation, preferably the complete fixation of the pump on the receiving device 35.
  • the mounting structure 20 is screwed to the receiving device 35 in the assembled state by means of a plurality of fastening screws which pass through the fastening elements 29 (FIG. 1).
  • other types of fixation for example a snap-in connection, can alternatively also be implemented.
  • the receiving device 35 has a connecting wall 37 which faces axially in the assembled state of the outlet seal 14 and which forms a bottom of the receiving shaft 36.
  • a first pressure connection 38 for the first pressure outlet 8 and a second pressure connection 39 for the second pressure outlet 9 are provided in the connecting wall 37.
  • the pressure fluid of the first working flow is conveyed through the first pressure outlet 8 and the subsequent first pressure connection 38 to an assembly to be supplied with the pressure fluid, while the pressure fluid of the second working flow is conveyed through the second pressure outlet 9 and the subsequent second pressure connection 39 to another Aggregate or the same aggregate and in this case expediently be transported to another location of the same unit.
  • the unit to be supplied can be, for example, a transmission, such as a
  • the fluid is a liquid, such as working oil or lubricating oil, but can in principle also be a gas.
  • the pressing device 30 acts between the
  • the pressing force that can be generated by the pressing device 30 acts axially on the pump housing 1 and is supported on the mounting structure 20 in the opposite axial direction.
  • the mounting structure 20 and the pump housing 1 limit one axially and in the exemplary embodiment also radially
  • the receiving space 31 is formed in the recess of the mounting structure 20 into which the pump housing 1 projects and is delimited in one axial direction by the pump housing 1, namely by the second end wall 4.
  • the pressing device 30 comprises a hydraulic device for generating a hydraulic pressing force.
  • the receiving space 31 forms a pressure chamber for a pressure fluid and is also referred to below as the pressure chamber 31.
  • This pressure fluid can in particular be the pressure fluid delivered by the pump.
  • the pressure chamber 31 can be connected to the high-pressure side of the first working flood and / or the high-pressure side of the second working flood, in order to conduct pressure fluid from the respective working flood into the pressure chamber 31.
  • the fluid connection in question can be implemented as a permanent fluid connection or as a switchable or controllable fluid connection. In simple, and not least therefore preferred, versions, it is a permanent fluid connection, so that the pressure chamber 31 is permanently connected to the high pressure side of the first working flood and / or the high pressure side of the second working flood during operation.
  • it is a permanent fluid connection, so that the pressure chamber 31 is permanently connected to the high pressure side of the first working flood and / or the high pressure side of the second working flood during operation.
  • the pressing device 30 comprises, in addition to the hydraulic device, a spring device 33 for generating a spring force which also serves as a pressing force for the outlet seal 14.
  • the spring device 33 is arranged in the pressure chamber 31.
  • Spring device 33 can, as in the exemplary embodiment, be formed as an annular plate spring.
  • the spring device 33 can be seen in FIG. 2 as an individual component. Other types of spring can also be used to implement the spring device 33.
  • the spring device can also comprise a plurality of springs, which can advantageously be arranged in the pressure chamber 31.
  • the realization of the spring device 33 by means of a single plate spring is advantageous with regard to a simple structure of the spring device 33 and its robustness.
  • the arrangement of the spring device 33 in the pressure chamber 31 is favorable with regard to a compact, ie space-saving, construction of the pump.
  • the spring device 33 acts axially directly on the pump housing 1 and is supported directly on the mounting structure 20 in the opposite axial direction.
  • the pump housing 1 and the mounting structure 20 form a piston-cylinder unit, within which the pump housing 1 forms the piston and the mounting structure 20 the cylinder.
  • a pressure chamber seal 24, which seals the pressure chamber 31 against the low-pressure side of the pump, is arranged in the gap running between the second end wall 4 and the outer collar 23 of the mounting structure 20.
  • a space seal 25 also extends over the outer circumference of the outer collar 23 and serves, as can be seen in FIG. 4, to seal the receiving shaft 36.
  • an annular space remains in the receiving shaft 36 around the outer circumference of the pump housing 1, which is filled with the fluid on the low pressure side during pump operation, i.e. the fluid flows through this annular space and the inlets 6 and 7 into the
  • the pump draws the fluid from one
  • Fluid reservoir in the annular space so that it is also used in such applications
  • Suction chamber can be called.
  • the components of the pump are loosely joined together, as already mentioned.
  • the components such as in particular the peripheral wall 2, the
  • the securing device comprises at least one holder 27, in the exemplary embodiment it comprises a first holder 27 and, preferably only a further, second holder 27.
  • the respective holder 27 projects in a rod-like manner in the axial direction from the mounting structure 20, through it projects from the mounting structure 20 first seen the second end wall 4, then the peripheral wall 2 and finally also the second end wall 3 and is in a holding engagement with the outlet seal 14.
  • the respective holder 27 can be formed directly on the assembly structure 20 or can be firmly connected to it in a friction or material connection. In principle, the respective holder 27 can protrude loosely through the mounting structure 20 and can be secured axially only by tension. In the exemplary embodiment, the respective holder 27 is pressed into the mounting structure 20.
  • the assembly unit can be held on the assembly structure 20, for example gripped and handled by means of an automatic assembly machine, wherein the pump housing 1 together with the outlet seal 14 can be held hanging on the assembly structure 20 by the respective holder 27 and outlet seal 14.
  • the pump housing 1 together with the outlet seal 14 can be held hanging on the assembly structure 20 by the respective holder 27 and outlet seal 14.
  • the respective holder 27 can also perform a positioning function due to its arrangement eccentric to the axis of rotation R in order to position the pump housing 1 and thus in particular the pressure outlets 8 and 9 relative to the mounting structure 20 in a specific angular position.
  • the respective holder 27 can also serve as a guide element for axially guiding the housing structures 2, 3 and 4 of the pump housing 1, relative to one another and / or relative to the mounting structure 20.
  • FIG. 5 shows the holding engagement of one of the holders 27 and the outlet seal 14 in detail.
  • the respective holder 27 also projects through the outlet seal 14
  • Outlet seal 14 is provided with a passage 15c, i.e. one passage 15c per holder 27, the respective passage 15c being shaped to match the associated holder 27.
  • the adjustment is that the respective holder 27 of the
  • Exhaust seal 14 performed, but can no longer be withdrawn after performing.
  • the outlet seal 14 acts in the area of the passage after the respective holder 27 has been passed through, like a barb which prevents the holder 27 from being pulled back.
  • the outlet seal 14 has engagement elements 15d for the holding engagement, which are seen from the outer edge of the respective passage 15c in an axial plan view in FIGS.
  • the engagement elements 15d can be inclined in the axial insertion direction of the associated holder 27. They are elastically bendable.
  • the respective holder 27 is elongated in the form of a rod, preferably cylindrical, and has an engagement section 28 in the region of its free end and an engagement mating element 29 axially adjoining it in the form of a radial widening.
  • the mating engagement element 29 forms the free end of the holder 27.
  • the engagement elements 15d act as spring tongue-like barbs for the mating engagement element 29.
  • the second end wall 4, the peripheral wall 2 and the first end wall 3 are pushed along the holder 27 in the direction of the assembly structure 20.
  • the outlet seal 14 is pressed axially against the holder 27 which is widened in the shape of the mating engagement elements 29 at the free end.
  • the mating engagement elements 29 are axially inserted into the associated passage 15c and pressed against the mating engagement elements 15d projecting inwards.
  • the engaging elements 15d yield under the pressure of the engaging counter elements 29 and spring into the holding engagement shown in FIG. 5 when they have been passed by the engaging counter element 29.
  • the engaging elements 15d come axially behind the respective one in the holding engagement
  • Mating engagement element 29, d. H. to lie axially in the region of the engagement section 28 of the respective holder 27 and prevent the outlet seal 14 from being able to be pulled axially away from the first end wall 3 again.
  • the holding engagement can be coordinated in such a way that the outlet seal 14 in the area of the sealing flanges or sealing webs 18 and 19 is pressed against the counter face surface of the first end wall 3 with a certain pressure force. Alternatively, there may be a small amount of axial play.
  • the carrier structure 15 forms the respective passage 15c and the engaging elements 15d projecting into this passage 15c.
  • the sealing structure 16 can also form an edge region of the respective passage 15c.
  • the outlet seal 14 acts as an axial seal both with respect to the pump housing 1 and with respect to the connection wall 37. This can be clearly seen in FIG. 4.
  • the outlet seal 14 performs a sealing function 18 along a first sealing web 18 and a second
  • Sealing web 19 pressed between an outer end face of the first end wall 3 and an axially facing end face of the connecting wall 37.
  • the first end wall 3 has a first depression 3a and a further, second depression 3b on its outer end face.
  • the wells 3a and 3b cover the
  • the first pressure outlet 8 (FIG. 2) opens into the recess 3a.
  • the second pressure outlet 9 (FIG. 2) opens into the recess 3b.
  • the outlet seal 14 has a sealing flange, a first bulge 15b projecting from the sealing flange (FIG. 3) and a second bulge 15b projecting from the sealing flange.
  • the sealing flange forms the first sealing web 18 and the second sealing web 19
  • Carrier structure 15 the bulges 15b and one around each of them
  • Carrier flange 15a Carrier flange 15a.
  • the flange 15a of the support structure 15 is covered on both ends with the sealing material in order to form the sealing webs 18 and 19 and thus the sealing structure 16.
  • the bulges 15b can be free of sealing material.
  • the carrier flange 15a can be omitted in sections or entirely, and the sealing material the sealing flange in the form of the sealing webs 18 and 19
  • the outlet seal 14 is held in the preassembled state of the pump in engagement with the respective holder 27 on the pump housing 1.
  • it can be shaped in a manner adapted to the recess 3a and / or the recess 3b and, in the preassembled state, inserted into the respective recess 3a and / or 3b, ie. H. be held on the end wall 3 positively and frictionally.
  • the first bulge 15b protrudes into the first depression 3a and the second bulge 15b protrudes into the second depression 3b.
  • the first sealing web 18 extends along the edge of the first recess 3a and the second sealing web 18 extends along the edge of the second recess 3b.
  • the sealing webs 18 and 19 lie against the axially projecting outer end face of the first end wall 3 with respect to the depressions 3a and 3b and frame the depressions 3a and 3b around the pressure outlet 8 located in the depression 3a and the pressure outlet located in the depression 3b 9 to seal.
  • the sealing web 18 provides a tight, i.e. fluid connection closed off to the outside between the first pressure outlet 8 (FIG. 2) and the first pressure connection 38.
  • the second sealing web 19 provides a tight, i.e. externally sealed fluid connection between the second pressure outlet 9 ( Figure 2) and the second
  • FIG. 6 shows the pump as a preassembled assembly unit in a perspective view of the outlet seal 14.
  • the outlet seal 14 comprises the
  • Carrier structure 15 and the sealing webs 18 and 19, which are each formed from the sealing material are each formed from the sealing material.
  • the support structure 15 projects like a two-part flat basket into the depressions 3a and 3b which are formed on the outer end face of the first end wall 3.
  • the two sealing webs 18 and 19 divide the outer end face of the first end wall 3 into at least substantially equal halves.
  • the sealing webs 18 and 19 each have an outer, arc-shaped sealing web section which extends on or near the periphery of the end wall 3, following the periphery of the end wall 3.
  • Outlet seal 14 into one another and form a common sealing web section 17 which extends inwards from a peripheral section end in the direction of a radially central region of the outlet seal 14.
  • the end wall 3 has a shaft passage for the drive shaft 12 in the central region.
  • the common sealing web section 17 branches into a section of the first sealing web 18 that extends around the central area on one side of the central area and one around the central area around the central area extended section of the second sealing web 19.
  • the two sections of the sealing webs 18 and 19 extend around the shaft passage. After each partial circulation around the central area of the
  • Outlet seal 14 here the shaft passage, the sealing webs 18 and 19 continue to extend separately from each other radially outwards, in the direction of the periphery, in order to form the respective sealing web 18 and 19 in a closed circulation.
  • the first sealing web 18 frames a first fluid passage 18a for the pressure fluid from the first pressure outlet 8 and the second sealing web 19 frames a second fluid passage 19a for the pressure fluid from the second pressure outlet 9.
  • the sealing webs 18 and 19 each leave a large cross-section that can be flowed through for the pressure fluid flowing out of the pressure outlet 8 and the pressure outlet 9.
  • the two fluid passages 18a and 19a cover the major part of the outer end face of the first end wall 3.
  • they divide the end face of the pump housing 1 into two at least substantially identical hemispheres, in which the pressurized fluid can be removed.
  • the sealing webs 18 and 19 leave a passage 17a, which extends from the central region of the outlet seal 14 in the direction of the periphery, free for a lubricating fluid.
  • the passage 17a extends from the central region of the outlet seal 14 to at least one connecting channel 5a, which extends through the first end wall 3 and connects the passage 17a to the low-pressure side of the delivery chamber 5 (FIG. 1).
  • the passage 17a runs open at the periphery, ie extends further outwards via the mouth of the connecting channel 5a. Lubricating fluid for lubricating the shaft bearing of the drive shaft 12 can thus enter the delivery chamber 5 and / or on the periphery of the outlet seal 14 via the passage 17a and the connecting channel 5a
  • the carrier structure 15 not only fulfills the function of a carrier for the sealing material. It also serves to reduce pressure peaks when the pressure fluid is cold and therefore comparatively viscous, for example when starting during a cold start.
  • the axial projection, i.e. H. Provided in plan view, region of support structure 15 extending within first sealing web 18 and region of carrier structure 15 extending in plan view within second sealing web 19 are provided with passages 15e.
  • the support structure 15 is provided with small, hole-like passages 17, i.e. it is perforated as seen across the fluid passages 18a and 19a.
  • the carrier structure 15 acts as a flow resistance, i. H. as a throttle or orifice, thereby reducing pressure peaks. In the warm operating state and correspondingly reduced viscosity of the pressure fluid, there is a certain, then only slight increase in
  • FIGS. 7 to 9 show an outlet seal 14 as such, before being arranged on the pump housing 1.
  • FIG. 7 is a perspective view of the outer end face of the outlet seal 14 in the assembled state
  • FIG. 8 is a perspective view of the outer end wall in the assembled state 3 facing inner face of the
  • Outlet seal 14 and FIG. 9 a longitudinal section through the central area and the two passages 15c, which in the preassembled state of the pump serve for holding engagement with one holder 27 each.
  • the outlet seal 14 corresponds with respect to its outer end face, which can be seen in the perspective of FIG. 7, to the outlet seal 14 of FIGS. 2 to 6.
  • the support structure 15 with its two perforated bulges 15b and the passages 15c used for securing corresponds to the support structure 15 the outlet seal 14 of FIGS. 2 to 6.
  • the flanges 15a surrounding the fluid passages 18a and 19a can also be seen.
  • the bulges 15b are also covered with the sealing material all around on the sides. These circumferential areas are designated 18 'and 19'.
  • the bulges 15b are by the
  • Circumferential regions 18 'and 19' with bulges 15b covered with sealing material in the depressions 3a and 3b by means of a plug connection, i. H. can be held with friction.
  • the frictional engagement serves to position and hold the outlet seal 14 in addition to the holding engagement.
  • the engagement elements 15d are projections which project into the respective passage 15c from the circumference thereof.
  • the engaging elements 15d engage in the engaging section 28 of the respective holder 27 and engage behind the engaging counter-element 29, which is formed as a widening of the respective holder 27, so that the outlet seal 14 does not simply axially emerge from the holding engagement can be pulled.
  • the engagement elements 15d are inclined to facilitate the insertion of the respective holder 27 in the axial insertion direction. They are designed as spring tongues so that they can be bent away from one another against elastic restoring force by the holder 27 pressing against them during axial insertion and after passing through the mating engagement element 29 into the slimmer ones
  • Figure 10 shows a section of a modified with respect to the holding intervention
  • Outlet seal 14 differs from the outlet seal 14 of FIGS. 2 to 6 and the outlet seal 14 of FIGS. 7 to 9 in that the holding engagement is not between the holder 27 and the support structure 15, but between the holder 27 and the
  • the carrier structure 15 has one passage per holder 27, but the respective passage is lined with the sealing material all around, so that the sealing material is in the area of the passage
  • Forming engagement element 16d which is elastically compressed when the outlet seal 14 is pushed on by the mating engagement element 29 of the holder 27 and elastically radially extends into the slimmer engagement section 28 when the engagement mating element 29 has passed through the passage of the outlet seal 14.
  • the holder 27 corresponds entirely to the holder 27 of FIGS. 1 to 9. Apart from the differences explained
  • Figure 11 shows a modified outlet seal 14 in a plan view of its outer end face in the assembled state.
  • the modified outlet seal 14 differs from the outlet seal 14 of FIG. 6 only in that the passage 17a is closed at the periphery by means of a short sealing section and therefore lubricating fluid only into the delivery chamber via the connecting channel 5a (FIG. 6) opening into the passage 17a 5 can be traced.
  • the modified outlet seal 14 corresponds to that described above.
  • the modified outlet seal 14 can optionally be used instead of the one previously described
  • Outlet seal 14 can be used.
  • FIG. 12 shows a pump that is also designed as a rotary pump in a second exemplary embodiment, which is derived from the first exemplary embodiment. So far
  • the reference symbols of the first exemplary embodiment are provided with an apostrophe for the relevant components.
  • the end walls 3 'and 4' support the drive shaft 12.
  • the mounting structure 20 ' does not form a bearing point for the drive shaft 12. Accordingly, a shaft seal 26 is arranged in the bearing gap between the drive shaft 12 and the second end wall 4'.
  • the inner collar has been omitted, and the second protrudes instead
  • End wall 4 ' with an axially projecting collar, which is also a socket for the
  • the Drive shaft 12 forms in a central passage of the assembly structure 20 '.
  • the pressure chamber 31 formed between the pump housing 1 and the mounting structure 20 'as in the first exemplary embodiment is sealed radially on the inside by means of an inner pressure chamber seal 24' which is arranged between the end wall 4 'and the mounting structure 20'.
  • the pressure space 31 is formed radially outside by means of the
  • a modified outlet seal 14 ' is arranged on the outer end face of the first end wall 3'.
  • the first end wall 3 ′ provided with the pressure outlets 8 and 9, as in the first exemplary embodiment, has no large-scale depressions 3a and 3b.
  • the outlet seal 14 ' has a modified support structure 15', which is at least essentially shaped as a flat, thin disk and only circumferentially on the outer circumference in the axial direction
  • the outlet seal 14 ' is plugged onto the first end wall 3' in the region of the upstanding edge of the support structure 15 'and is held there by friction.
  • the holders 27 ' hook with the first end wall 3' in order to hold the components of the assembly unit together in the preassembled state and to position them relative to the assembly structure 20 'in a certain angular position.
  • the outlet seal 14 ' has a sealing structure 16' with sealing webs 18 'and 19', which in the top view has the same course as the sealing webs 18 and 19 of the first
  • the sealing structure 16 ' with the sealing webs 18' and 19 'connected radially on the outside, has an outer radial sealing web 16''which covers the upstanding edge of the support structure 15' on the outside.
  • the outlet seal 14 ′ interacts both with the pump housing 1 and with the connecting wall 37 of the receiving device 35 (FIG. 4) as an axial seal. In addition, it can act as a radial seal with its outer radial sealing web 16 “when assembled.
  • Figure 13 shows a pump of a third embodiment in a longitudinal section.
  • the third exemplary embodiment is also a rotary pump. This differs from the pumps of the first and second exemplary embodiments in that it has an outlet seal 44, which is supported on the pump housing 1 by means of a pressing device 45 so that it can move axially relative to the pump housing 1.
  • a mounting structure in addition to the pump housing 1 is not present in the third exemplary embodiment.
  • the second end wall 4 of the previous exemplary embodiments is instead replaced by a second end wall 40, which also serves as an assembly structure.
  • the pump is fastened to the receiving device 35 (FIG. 4) by means of the second end wall 40.
  • the second end wall 40 has a radially projecting flange 41 for mounting, in the area of which fastening elements 29 are provided which, as in the previous exemplary embodiments, serve as passages for, for example
  • Receiving shaft 36 projecting axial section surrounds a space seal 42, the second end wall 40 to seal the receiving shaft 36 and the suction chamber formed therein to the outside environment.
  • the layered structure of the pump housing 1 with the peripheral wall 2, the first end wall 3 and the second end wall 40 otherwise corresponds to the housing structure of the previous exemplary embodiments.
  • the rotor 10 with the vanes 11 and the drive shaft 12 also correspond to the functionally identical components of the previous exemplary embodiments.
  • the pump of the third exemplary embodiment has two circuits and therefore has a first pressure outlet 8 and a second pressure outlet 9 corresponding to the first exemplary embodiment.
  • the first end wall 3 corresponds at least substantially to the first end wall 3 of the first exemplary embodiment and, like this, has, on its outer end face, a depression 3a in plan view, into which the first pressure outlet 8 opens, and a second depression 3b, in which the second
  • Pressure outlet 9 opens. What has been said about the recesses 3a and 3b of the first exemplary embodiment applies to the recesses 3a and 3b.
  • the axially movable outlet seal 44 has a support structure 15 corresponding to the first exemplary embodiment and a sealing structure 16 made of the sealing material, which has a first sealing web 18 for the first working flood and the first pressure outlet 8 and a second sealing web 19 for the second working flood and the second pressure outlet 9 forms.
  • the sealing webs 18 and 19 correspond to the course according to the sealing webs 18 and 19 of the first exemplary embodiment and act with the connecting wall 37 in FIG.
  • Receiving device 35 as an axial seal.
  • the outlet seal 44 differs from the outlet seal 14 in that it is connected to the peripheral walls of the recesses 3a and 3b, i.e. H. with the inner peripheral surfaces of the depressions 3a and 3b, each form a radial seal. Accordingly, the sealing material not only forms the sealing webs 18 and 19, but also covers the support structure 15 in the region of the bulges 15b which protrude into the depressions 3a and 3b in order to form the respective radial seal with the peripheral wall of the respective depression 3a and 3b.
  • the radial sealing webs which act as a radial seal are designated 48 for the first flood of work or first depression 3a and 49 for the second flood of work or second depression 3b.
  • the radial sealing webs 48 and 49 are shaped to match the course of the inner circumferential surfaces of the depressions 3a and 3b, so that they seal the depressions 3a and 3b all round on the inner circumferential surfaces and in this way separate the pressure outlets 8 and 9 from one another and from the low-pressure side of the pump.
  • the outlet seal 44 can largely on its inner end face axially facing the pump housing 1
  • Outlet seal 14 of Figures 7 to 9 correspond.
  • the radial sealing webs 48 and 49 thus correspond to the peripheral regions 18 'and 19' covered with the sealing material, the radial sealing webs 48 and 49, however, unlike the peripheral regions 18 'and 19', not being interrupted by passages 15c.
  • these can be arranged closer to the central area in the outlet seal 44 than in the case of the outlet seal 14 in FIGS. 7 to 9, or the depressions 3a and 3b and correspondingly also the radial sealing webs 48 and 49 locally in the area of the passages 15c further outwards be bulged in order to receive the radial sealing webs 48 and 49 completely circumferentially without interruption.
  • the bulges 15b and the sealing webs 48 and 49 expediently have a greater height in the axial direction, measured from the
  • the outlet seal 44 corresponds to the outlet seal 14 of the first exemplary embodiment and in particular to the modified outlet seal 14 of FIGS. 7 to 9.
  • the pressing device 45 is a spring device. The pressure force is generated purely mechanically.
  • the pressing device 45 is shown individually, in the non-installed state. It is designed as an annular wave spring.
  • the pressing device 45 acts in the region of the peripheral web sections of the sealing webs 18 and 19 on the outlet seal 44 in order to press it axially against the facing connecting wall 37 in all operating states of the pump and thereby to seal the two working flows from one another and against the low-pressure side of the pump
  • the pressing device 45 lies with a
  • the pressing device 45 overlaps with the peripheral sections of the sealing webs 18 and 19, so that the pressure force generated as a spring force acts on the sealing webs 18 and 19 in the web sections in question without radial offset.
  • FIG. 15 shows a pressing device 46, which is used as an alternative to the pressing device 45 and can also be arranged in a comparable manner to the pressing device 45.
  • the pressing device 46 can simply replace the pressing device 45.
  • the pressing device 46 has an advantageously planar pressing ring 46a, which is used to abut the outlet seal 44, and a plurality of spring elements 46b, which are arranged at equal angular intervals around the circumference of the pressing ring 46a and which, when installed, rest against the first end wall 3 around the pressing ring 46a and thus the outlet seal 44 is supported axially on the first end wall 3.
  • the spring elements 46b are shaped and arranged on the pressure ring 46a in such a way that the spring forces generated by the spring elements 46b during axial compression act axially and without offset on the pressure ring 46a and thus on the peripheral sections of the sealing webs 18 and 19.
  • FIG. 16 shows a further modified pressing device 47.
  • the pressing device 47 also forms, in an integrated design, a support structure for an outlet seal, which, as a structural unit, also forms the sealing webs required to seal the working floods Has sealing material.
  • the sealing structure with the sealing webs is not shown in FIG. 16.
  • the carrier structure 47a has the shape of the sealing webs 18 and 19 of the outlet seal 14 shown in FIG. 11 in an axial plan view. Accordingly, it encircles a peripheral ring and structural sections for supporting the sealing web section 17 common in FIG. 11 and the two the passage 17a laterally
  • sealing webs required for the fulfillment of the sealing function are joined with the carrier structure 47a following their course or molded onto the carrier structure 47a following their course, for example in a plastic injection molding process, in which case preferably a sealing material is used
  • thermoplastic elastomer is used.
  • Support device 6 Support shaft 7 Connection wall, floor 8 Pressure connection 9 Pressure connection 0 front wall

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe permettant d'alimenter un engin en fluide sous pression, ladite pompe comprenant : un carter de pompe (1) qui présente une paroi périphérique (2) entourant une chambre de refoulement (5) de la pompe, une première paroi frontale (3) et une seconde paroi frontale (4), lesquelles délimitent la chambre de refoulement (5) sur leurs faces frontales, un rotor (10) mobile en rotation autour d'un axe de rotation (R ) dans la chambre de refoulement (5) afin de former des cellules de refoulement, une sortie de pression (8) qui débouche au niveau d'une face frontale extérieure de la première paroi frontale (3) située à l'opposé de la chambre de refoulement (5) et par laquelle le fluide sous pression peut être transporté hors de la chambre de refoulement (5), une garniture d'étanchéité de sortie (14) qui se situe sur la face frontale extérieure de la première paroi frontale (3) et est destinée à rendre étanche la sortie de pression (8), et un support (27) se trouvant en liaison de retenue avec la garniture d'étanchéité de sortie (14), lequel positionne la paroi périphérique (3) et les parois frontales (2, 4) relativement les unes aux autres et les maintient ensemble axialement au moyen de la mise en prise de retenue, en tant qu'unité de montage prémontée.
EP19835307.0A 2018-12-28 2019-12-27 Pompe rotative à compensation axiale, garniture d'étanchéité de sortie pour une pompe et ensemble pompe prémonté Pending EP3903006A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018133679.9A DE102018133679A1 (de) 2018-12-28 2018-12-28 Rotationspumpe mit axialer Kompensation, Auslassdichtung für eine Pumpe sowie vormontierte Pumpeneinheit
PCT/EP2019/087116 WO2020136270A1 (fr) 2018-12-28 2019-12-27 Pompe rotative à compensation axiale, garniture d'étanchéité de sortie pour une pompe et ensemble pompe prémonté

Publications (1)

Publication Number Publication Date
EP3903006A1 true EP3903006A1 (fr) 2021-11-03

Family

ID=69156401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19835307.0A Pending EP3903006A1 (fr) 2018-12-28 2019-12-27 Pompe rotative à compensation axiale, garniture d'étanchéité de sortie pour une pompe et ensemble pompe prémonté

Country Status (5)

Country Link
US (1) US11608828B2 (fr)
EP (1) EP3903006A1 (fr)
CN (1) CN113348302B (fr)
DE (1) DE102018133679A1 (fr)
WO (1) WO2020136270A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018133681A1 (de) * 2018-12-28 2020-07-02 Schwäbische Hüttenwerke Automotive GmbH Rotationspumpe mit axialer Kompensation, Auslassdichtung für eine Pumpe sowie vormontierte Pumpeneinheit
DE102021126416A1 (de) * 2021-10-12 2023-04-13 Schwäbische Hüttenwerke Automotive GmbH Axialsicherung einer Pumpe

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3752609A (en) * 1972-02-17 1973-08-14 Sperry Rand Corp Vane pump with fluid-biased end walls
DE2423773C2 (de) * 1974-05-16 1985-01-10 Daimler-Benz Ag, 7000 Stuttgart Flügelzellenmaschine, insbesondere -pumpe
GB1513436A (en) * 1975-08-07 1978-06-07 Hydroperfect Int Reversible hydraulic gear pumps and motors
JPS57234Y2 (fr) * 1978-01-27 1982-01-05
DE19631846A1 (de) 1995-08-14 1997-02-20 Luk Fahrzeug Hydraulik Pumpe
DE10027990A1 (de) 2000-06-08 2001-12-20 Luk Fahrzeug Hydraulik Pumpe
JP4636108B2 (ja) * 2007-12-25 2011-02-23 パナソニック電工株式会社 ベーンポンプ
DE102015105933B4 (de) * 2015-04-17 2018-04-26 Schwäbische Hüttenwerke Automotive GmbH Pumpe
DE102015017078B4 (de) * 2015-04-17 2019-10-24 Schwäbische Hüttenwerke Automotive GmbH Pumpe
DE102015105928B4 (de) * 2015-04-17 2018-05-17 Schwäbische Hüttenwerke Automotive GmbH Pumpe
JP6574363B2 (ja) * 2015-09-18 2019-09-11 Ｋｙｂ株式会社 カートリッジ式ベーンポンプ
DE102016204099B3 (de) 2016-03-11 2017-03-16 Magna Powertrain Bad Homburg GmbH Dichtungsanordnung für schaltbare Flügelzellenpumpe in Cartridge-Bauweise
DE102016211913A1 (de) * 2016-06-30 2018-01-18 Schwäbische Hüttenwerke Automotive GmbH Flügelzellenpumpe mit druckbeaufschlagbarem Unterflügelbereich
DE102018133681A1 (de) * 2018-12-28 2020-07-02 Schwäbische Hüttenwerke Automotive GmbH Rotationspumpe mit axialer Kompensation, Auslassdichtung für eine Pumpe sowie vormontierte Pumpeneinheit

Also Published As

Publication number Publication date
US20210396226A1 (en) 2021-12-23
DE102018133679A1 (de) 2020-07-02
CN113348302A (zh) 2021-09-03
WO2020136270A1 (fr) 2020-07-02
US11608828B2 (en) 2023-03-21
CN113348302B (zh) 2023-08-04

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