EP3805521A1 - Pompe à palettes - Google Patents

Pompe à palettes Download PDF

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Publication number
EP3805521A1
EP3805521A1 EP20200950.2A EP20200950A EP3805521A1 EP 3805521 A1 EP3805521 A1 EP 3805521A1 EP 20200950 A EP20200950 A EP 20200950A EP 3805521 A1 EP3805521 A1 EP 3805521A1
Authority
EP
European Patent Office
Prior art keywords
lower wing
recess
end wall
rotor
area
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
EP20200950.2A
Other languages
German (de)
English (en)
Inventor
Uwe Meinig
Robin Rene Rauscher
Lothar Preisler
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 EP3805521A1 publication Critical patent/EP3805521A1/fr
Pending legal-status Critical Current

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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
    • 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
    • F04C2/3446—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 the inner and outer member being in contact along more than one line or surface
    • 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
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0854—Vane tracking; control therefor by fluid means
    • F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • 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
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/108—Stators; Members defining the outer boundaries of the working chamber with an axial surface, e.g. side plates
    • 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
    • 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
    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3446—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along more than one line or surface
    • 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
    • F04C2/3441—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 the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • 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
    • F04C2210/00—Fluid
    • F04C2210/14—Lubricant
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • 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
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/70—Safety, emergency conditions or requirements
    • F04C2270/701—Cold start

Definitions

  • the invention relates to a displacement pump designed as a vane pump, in particular a single- or double-flow or double-stroke vane pump.
  • a fluid for example a gas or a liquid, such as oil
  • the pump can be provided, for example, for installation in a vehicle, in particular a motor vehicle.
  • the pump for delivering lubricating oil can be provided for a consumer in a motor vehicle, for example an engine or a transmission, in particular an automatic transmission, for example for a motor vehicle.
  • the pump can be arranged or fastened, for example, in or on a transmission or a transmission housing.
  • Vane pumps are known from the prior art which have a rotor which is rotatable relative to a housing and which comprises a plurality of slot-shaped recesses, in each of which a vane is arranged and which guide the vane in a radially displaceable manner.
  • a contour ring of the housing has an inner contour formed by its inner circumference, which extends around the rotor and along which the vanes slide during the rotation of the rotor in order to convey fluid from a suction side to a pressure side of the pump.
  • the rotor forms a lower wing chamber under each wing, which can be pressurized with fluid, whereby the wing of each lower wing chamber is urged radially outward against the inner contour.
  • the invention is based on the object of specifying a vane pump which has high levels of efficiency, but at the same time reduces the risk of the vanes lifting off the inner contour of the contour ring. For example, a good suction behavior of the pump during a cold start should also be guaranteed. It can be seen as a sub-task to specify a double-flow pump whose flows can be operated completely independently of one another and / or with different beneficial and high volumetric efficiencies.
  • the invention is based on a vane cell pump, in particular of a motor vehicle or for a motor vehicle, which has a rotor that can be rotated about an axis of rotation and a plurality of vanes that are displaceably guided by the rotor.
  • a vane cell pump in particular of a motor vehicle or for a motor vehicle, which has a rotor that can be rotated about an axis of rotation and a plurality of vanes that are displaceably guided by the rotor.
  • several blades can be arranged distributed over the circumference of the rotor, in particular evenly, and / or can be displaced relative to the rotor individually or independently of one another.
  • at least six wings, in particular 6, 8, 10, 12, 14 wings, can be provided.
  • the blades can be displaceable relative to the rotor at least with a radial component or radially with respect to the axis of rotation of the rotor.
  • the rotor can form a slot-shaped guide for each wing, which is designed to guide the wing assigned to it with a translational, in particular a single translational degree of freedom, in particular radially.
  • the rotor For each wing and / or slot-shaped guide, the rotor has a lower wing chamber, which can in particular be arranged between the axis of rotation of the rotor and the slot-shaped guide assigned to the lower wing chamber.
  • Each wing forms a movable wall of its associated lower wing chamber.
  • the vane pump can, for example, have a contour ring, in particular a stroke ring, which has an inner contour (inner circumferential surface) extending around the axis of rotation of the rotor, on which the vanes slide with their radially outer ends when the rotor is rotated, especially when the vane pump is in operation becomes.
  • the inner contour of the contour ring can have at least one ascending area, with a vane being moved out of the rotor, in particular at least supported by a fluid pressure in the lower vane chamber, while it slides over the ascending area, and at least one descending area, with one vane entering the rotor , in particular against a fluid pressure in the underwing chamber, is moved in while sliding over the descending area.
  • the inner contour can have an area that is adapted to a top dead center for the wing that glides over this area, d. H. to define a maximally moved out of the rotor position for the wing. While the wing is being moved through this area, it is preferably at least approximately stationary with respect to the rotor. Therefore, this range can be referred to as the constant range or - more precisely - the upper constant range. When the vane is moved from the ascending range over the upper constant range into the descending range, the direction of movement of the vane in relation to the rotor is reversed.
  • the inner contour can have an area that is adapted to a lower dead center for the wing that glides over this area, d. H. to define a maximally moved into the rotor position for the wing. While the wing is being moved through this area, it is preferably at least approximately stationary with respect to the rotor. Therefore, this range can be referred to as the constant range or - more precisely - the lower constant range.
  • the vane is moved from the descending range over the lower constant range into the ascending range, the direction of movement of the vane in relation to the rotor is reversed.
  • the inner contour of the contour ring can have a first ascending area and a first descending area, which corresponds to a first tide, ie. H. associated with a first fluid flow from a suction or low pressure side to a pressure or high pressure side, and at least one second ascending area and one second descending area which are associated with a second flow, d. H. a second fluid flow from a suction or low pressure side to a pressure or high pressure side, are assigned.
  • a wing is moved out of the rotor, in particular at least supported by a fluid pressure in the lower wing chamber, when it slides over the ascending area, in particular the first or second ascending area, and into the rotor, in particular against a fluid pressure in the lower wing chamber, moves in when it slides over the descending area, in particular the first or second descending area.
  • each vane is extended once and retracted once during a full rotation of the rotor.
  • a double-flow or two-stroke vane pump is extended, retracted, extended and retracted again during one full revolution of the rotor, ie extended twice and retracted twice.
  • vane pumps with more than two flows or strokes for example three-flow or three-stroke vane pumps, each wing is extended and retracted correspondingly more often during a full rotation of the rotor.
  • the inner contour of the contour ring can be in each case between an end of the first ascending area and a start of the first descending area and / or between an end of the second ascending area and a start of the second descending area have an area which is adapted to define a top dead center (see above) for the wing that slides over this area.
  • This range can be referred to as the constant range or - more precisely - as the first upper constant range if it is formed between the end of the first ascending range and the beginning of the first descending range, and as the second upper constant range if it is between the end of the second ascending range and the beginning of the second descending range is formed.
  • the inner contour can each have an area between one end of the first descending area and the beginning of the second ascending area and / or between one end of the second descending area and the beginning of the first ascending area have, which is adapted, for the wing that slides over this area, a bottom dead center (see above), i. H. to define a maximally moved into the rotor position for the wing.
  • This range can be referred to as the constant range or - more precisely - as the first lower constant range if it is formed between the end of the first descending range and the beginning of the second ascending range, and as the second lower constant range if it is between the end of the second descending range and the beginning of the first ascending range is formed.
  • the vane pump can have an end wall adjoining the rotor on the end face, in particular a first end wall.
  • the vane pump can have an end wall adjoining the rotor on the end face, in particular a second end wall.
  • the first end wall can be at least one for pressure control or pressure supply of the lower vane chambers of the rotor, preferably a plurality of lower wing recesses extending in the circumferential direction, which are referred to or can be designed in particular as lower wing supply recesses or lower wing supply kidneys or lower wing supply grooves.
  • the second end wall for pressure control or pressure supply to the lower wing chambers of the rotor can have at least one, preferably several, lower wing recesses extending in the circumferential direction, which are in particular referred to or can be designed as lower wing supply recesses or lower wing supply kidneys or lower wing supply grooves.
  • the contour ring, the first end wall and the second end wall can be separate parts which, when joined together, form a housing.
  • the contour ring, the first end wall and the second end wall are preferably joined together so as to be non-rotatable about the axis of rotation of the rotor in relation to one another.
  • the contour ring can be an integral part of the first end wall or the second end wall.
  • the first end wall and / or the second end wall can - in the case of a single-flow vane pump - in particular an ascending under-wing recess and a descending under-wing recess - in a double-flow vane pump - in particular in each case a first ascending under-wing recess, a first descending under-wing recess, a second ascending under-wing recess and a second descending under-wing recess - with a higher-flow vane pump, d. H. a vane pump with even more floods - accordingly have further under-wing recesses.
  • the rising lower wing recess serves to control the pressure of a lower wing chamber when its wing is located in the rising area of the inner contour or slides along the rising area of the inner contour.
  • the descending lower wing recess is used to control the pressure of a lower wing chamber when its wing is located in the descending area of the inner contour or slides along the descending area of the inner contour.
  • the first rising lower wing recess is used to control the pressure of a lower wing chamber and / or the first rising lower wing recess is connected to a lower wing chamber in a fluid-communicating manner when its wing is in the first rising area of the inner contour or slides along it.
  • the second rising lower wing recess is used to control the pressure of a lower wing chamber and / or the second rising lower wing recess is fluidly connected to a lower wing chamber when its wing is in the second rising area of the Inside contour is or slides along it.
  • the first descending lower wing recess is used to control the pressure of a lower wing chamber and / or the first descending lower wing recess is fluidly connected to a lower wing chamber when its wing is in the first descending area of the inner contour or slides along it.
  • the second descending lower wing recess is used to control the pressure of a lower wing chamber and / or the second descending lower wing recess is connected to a lower wing chamber in a fluid-communicating manner when its wing is in the second descending area of the inner contour or slides along it.
  • the lower wing recesses can be groove-shaped or pocket-shaped.
  • the lower wing recesses can extend in the circumferential direction, in particular curved around the axis of rotation.
  • the lower wing recesses can each form an arcuate section rotating around the axis of rotation of the rotor and can be arranged one behind the other or in series in the direction of rotation.
  • the lower wing recesses of the first end wall can be arranged in such a way that the lower wing chambers or each of the lower wing chambers are successively connected to the lower wing recesses of the first end wall in fluid communication during one complete rotation (360 °) of the rotor, whereby it is preferred that one lower wing chamber only ever a lower wing recess of the first end wall can be connected in a fluid-communicating manner or, in other words, that a lower wing chamber in all possible rotational positions of the rotor cannot be connected in a fluid-communicating manner to a plurality of lower wing recesses of the first end wall at the same time.
  • the lower wing recesses of the second end wall can be arranged in such a way that the lower wing chambers or each of the lower wing chambers are successively connected to the lower wing recesses of the second end wall in fluid communication during a complete rotation (360 °) of the rotor, whereby it is preferred that one lower wing chamber always can only be connected in a fluid-communicating manner to one under-wing recess of the second end wall or, in other words, that an under-wing chamber cannot be connected in a fluid-communicating manner to several under-wing recesses of the second end wall in all possible rotational positions of the rotor at the same time.
  • a lower wing chamber at the same time with a lower wing recess of the first end wall and a lower wing recess of the second Front wall can be connected in a fluid-communicating manner.
  • the rotor can assume a rotational position in which a lower wing chamber is connected at the same time to a lower wing recess of the first end wall and the second end wall.
  • the rotor can assume a rotational position in which a lower wing chamber is simultaneously connected to the first rising lower wing recess of the first end wall and the second end wall.
  • the rotor can assume a rotational position in which a lower wing chamber is simultaneously connected to the first descending lower wing recess of the first end wall and the second end wall.
  • the rotor can assume a rotational position in which a lower wing chamber is connected at the same time to the second rising lower wing recess of the first end wall and the second end wall.
  • the rotor can assume a rotational position in which a lower wing chamber is simultaneously connected to the second descending lower wing recess of the first end wall and the second end wall.
  • a separating web that fluidically separates the adjacent lower wing recesses from one another, or a hydraulic constriction, for example a groove or a channel, which is open to the rotor, which the adjacent lower wing recesses fluidly connects to one another, be formed.
  • a separating web can be formed on the first end wall or on the second end wall between the first descending lower wing recess and the second rising lower wing recess.
  • a separating web can be formed on the first end wall or on the second end wall between the second descending lower wing recess and the first rising lower wing recess.
  • a separating web can be formed on the first end wall between the first ascending lower wing recess and the first descending lower wing recess and / or between the second ascending lower wing recess and the second descending lower wing recess, in particular in each case.
  • a hydraulic bottleneck can be formed on the second end wall between the first ascending lower wing recess and the first descending lower wing recess and / or between the second ascending lower wing recess and the second descending lower wing recess.
  • the separating web or the separating webs are, for example, between the first descending lower wing recess and the second rising lower wing recess and / or between the second descending lower wing recess and the first ascending lower wing recess and / or between the first ascending lower wing recess and the first descending lower wing recess and / or between the second ascending lower wing recess and the second descending lower wing recess, designed so that he / she can close a lower wing chamber in a rotational position of the rotor and / or fluidically separate it from the lower wing recesses adjoining the relevant separating web.
  • each of the lower wing chambers can open out with a first opening to the first end wall and a second opening to the second end wall.
  • the separating web or the separating webs are preferably dimensioned such that he / she can cover the first opening or the second opening completely or essentially completely in order to fluidically separate them from the adjoining lower wing chambers.
  • the lower wing recesses can be enclosed or limited in the circumferential direction or the direction of rotation of the rotor by a control edge which - based on the direction of rotation of the rotor - forms the beginning of a lower wing recess, and a control edge which forms one end of the lower wing recess.
  • the control edge can be formed, for example, by the transition from the lower wing recess to the adjacent separating web or by a projection which forms the hydraulic constriction or which delimits it laterally.
  • an ascending lower wing recess of the first end wall can lie opposite the ascending lower wing recess of the second end wall, ie at least partially overlap the ascending lower wing recess of the second end wall in a projection along the axis of rotation of the rotor.
  • a descending lower wing recess of the first end wall of the descending Opposite the lower wing recess of the second end wall, ie at least partially overlap the descending lower wing recess of the second end wall in a projection along the axis of rotation of the rotor.
  • Two lower wing recesses lying opposite one another can be referred to as lower wing recesses of the same type.
  • a separating web formed between an ascending lower wing recess and a descending lower wing recess of the first end wall can be opposite a separating web or hydraulic constriction formed between an ascending lower wing recess and a descending lower wing recess of the second end wall, i.e. H. at least partially overlap the separating web or the hydraulic constriction.
  • Two mutually opposite separating webs can be referred to as mutually similar separating webs.
  • control edges of the same type are in particular designed differently from one another and / or offset, in particular angularly offset from one another, so that the pressure supply or pressure control of the lower wing chambers via the lower wing recess of the first end wall and the pressure supply or pressure control of the lower wing chambers via the opposite or similar lower wing recess of the second end wall differs from one another, for example in such a way that a lower wing chamber, after being fluidically connected to both lower wing recesses, is still fluidically connected to one lower wing recess after a further rotation of the rotor in the direction of rotation, but is already fluidically separated from the other lower wing recess.
  • the lower wing recesses according to the invention can be used to switch between an axially bilateral and an axially unilateral pressure supply of a lower wing chamber, in particular within an ascending or descending region.
  • An angle-dependent, axially asymmetrical pressure supply of a lower wing chamber can be implemented.
  • Control edges of the same type can be control edges which fulfill the same function of the axially opposite or similar lower wing recesses, for example each defining or forming the end or the beginning of the lower wing recess, for example the first ascending, the first descending, the second ascending or the second descending lower wing recess of the end walls .
  • the lower wing recess of the first end wall can end earlier or later than the opposite or similar lower wing recess of the second end wall, whereby the pressure supply of a lower wing chamber via the lower wing recess of the first end wall ends sooner or later as the pressure supply of the lower wing chamber via the lower wing recess of the second end wall.
  • the lower wing recess of the first end wall can start earlier or later than the opposite or similar lower wing recess of the second end wall, whereby the pressure supply of a lower wing chamber via the lower wing recess of the first end wall sooner or later begins as the pressure supply to the lower wing chamber via the lower wing recess of the second end wall.
  • control edges can differ from one another in their shape, for example acute angles versus obtuse angles, inwardly kinked / bent versus outwardly kinked / bent, curved versus straight, ramp rising radially inward versus ramp falling radially outward. Furthermore, the control edges of the same type can differ from one another in their extension, for example with regard to their width, depth, length. The control edges can be offset from one another in the radial direction and / or in the circumferential direction.
  • the angular offset or distance between two similar control edges is advantageous in the projection between a first straight line (leg), which in the projection along the axis of rotation forms a tangent to the one control edge and intersects the axis of rotation, and a second straight line (leg), which forms a tangent to the other (similar) control edge in the projection along the axis of rotation and intersects the axis of rotation, measured, the axis of rotation forming the apex of the angle.
  • the angular offset or distance between two similar control edges is preferably greater than 5 °, advantageously greater than 10 ° and particularly advantageously greater than 15 °.
  • control edge of the lower wing recess of the first end wall and the similar control edge of the lower wing recess of the second end wall can be angularly offset around the axis of rotation of the rotor as a vertex.
  • the control edge of the lower wing recess of the first end wall and the similar control edge of the opposite or similar lower wing recess of the second end wall are preferably offset from one another by at least a width of the opening of the lower wing chamber pointing in the direction of rotation.
  • the angular offset or spacing between two similar control edges is preferably at least one width, directed in the direction of rotation, of the opening of the lower wing chamber pointing towards the end wall.
  • the rotor has an angular position in which a lower wing recess, for example the first descending lower wing recess, the first end wall fluidically separated from a lower wing chamber and the opposite or similar lower wing recess, for example the first descending lower wing recess, the second end wall with this lower wing chamber is fluidly connected.
  • a lower wing recess for example the first descending lower wing recess
  • the first end wall fluidically separated from a lower wing chamber
  • the opposite or similar lower wing recess for example the first descending lower wing recess
  • the rotor can advantageously assume a first rotational position in which the lower wing recess of the first end wall is connected in fluid communication with one of the lower wing chambers and the opposite or similar lower wing recess of the second end wall is also connected in fluid communication with this lower wing chamber, and a second rotational position different from the first rotational position occupy, in which the lower wing recess of the first end wall fluidly separated from one of the lower wing chambers and the opposite or similar lower wing recess of the second end wall is fluidly connected to this lower wing chamber.
  • the rotor can assume a third rotational position different from the first and / or second rotational position, in which the lower wing recess of the second end wall is fluidically separated from one of the lower wing chambers and the opposite or similar lower wing recess of the first end wall is in fluid communication with this lower wing chamber connected is.
  • the angular distance around the axis of rotation of the rotor between a dead center and the control edge of the lower wing recess of the first end wall adjacent to the dead center and the angular distance around the axis of rotation of the rotor between a dead center and the similar control edge adjacent to the dead center is the opposite or similar lower wing recess of the second end wall, preferably of different sizes.
  • the rotor can preferably assume a rotational position in which the lower wing recess of the first end wall and the opposite or similar lower wing recess of the second end wall are connected in fluid communication with the same lower wing chamber when the wing assigned to it is located in the first, descending area or the second, ascending area , and assume a rotational position, in particular after a further rotation in the direction of rotation, in which the lower wing recess of the first end wall fluidically from a Separate lower wing chamber and the opposite or similar lower wing recess of the second end wall is fluidly connected to this lower wing chamber when the wing assigned to it is in the first, descending area or the second, ascending area.
  • the vane pump is preferably adapted so that, during the rotation of the rotor, a lower wing chamber is connected in fluid communication with the, in particular first, descending lower wing recess of the one, in particular second, end wall, until this lower wing chamber is in fluid communication with the, in particular second, rising lower wing recess of the other, in particular first, end wall is or will be connected.
  • the lower wing chamber of a wing that passes through the, in particular the lower, dead center or constant area, is preferably still connected to the, in particular the first, descending lower wing recess of the one, in particular the second, end wall, but preferably already by the, in particular the first, descending lower wing recess of the other, in particular the first, end wall fluidically separated, and already connected in fluid communication with the, in particular the second, ascending lower wing recess of the other, in particular first, end wall, but preferably still fluidically separated from the, in particular second, rising under wing recess of the one, in particular the second, end wall when this wing is at or in, in particular the lower, constant range or at its dead center.
  • the angular offset between two separators is advantageous in the projection along the axis of rotation, i. H. measured parallel to the axis of rotation, between a straight line (leg) intersecting the axis of rotation of the rotor through the center point of one separating web and a straight line (leg) intersecting the axis of rotation of the rotor through the center point of the other (opposite or similar) separating web, the axis of rotation being the vertex of the angle forms.
  • the center point of a separating web is preferably on the bisector of the angular distance around the axis of rotation of the rotor as the apex between the control edges which limit the separating web in the direction of rotation of the rotor.
  • the angular offset between two opposing or similar separating webs is preferably greater than 5 °, advantageously greater than 10 ° and particularly advantageously greater than 15 °.
  • the separating web of the first end wall and the similar or opposite separating web of the second end wall can preferably partially, in particular only partially and not completely, overlap in the projection along the axis of rotation, in particular in an overlapping area.
  • the circumferential width of the overlap region is smaller than the circumferential width of the opening facing the first end face and / or the opening of the lower wing chamber facing the second end face.
  • the lower wing chamber of a wing that passes through the overlap area preferably also has a, in particular first, descending lower wing recess of the one, in particular second, end wall and already with the, in particular second, ascending under wing recess of the other, in particular first, end wall is fluidly connected when this wing is on or in the overlap area.
  • the constant region in particular the lower constant region, is advantageously arranged in the angular region of the separating web of the first end wall and / or in the angular region of the separating web of the second end wall, in particular in the angular region of the overlap region.
  • the separating web of the first end wall and / or the separating web of the second end wall has a circumferential width which is greater than the circumferential width of the opening pointing to the first end face and / or the opening of the second end face pointing Lower wing chamber.
  • the relevant separating web in a rotational position of the rotor can completely close the opening of a lower wing chamber facing the front wall and / or that the rotor has or can assume a rotational position in which at least one of the lower wing chambers is fluidically separated from the two circumferentially adjacent lower wing recesses of a front wall is separated.
  • the angular distance around the axis of rotation of the rotor as the vertex between a control edge and a constant area or an area that defines an upper or lower dead point for a wing is advantageously used in a projection along the axis of rotation, i.e. H. parallel to the axis of rotation, between a straight line (leg) intersecting the axis of rotation, which in the projection along the axis of rotation forms a tangent to the control edge and a straight line intersecting the axis of rotation through the center point - based on the direction of rotation of the rotor, the center point between the beginning and the end of the constant range - or the dead center of the constant range or the range that defines the dead center for the wing.
  • the center point or the dead point of the range or constant range is preferably on an angle bisector of the angular distance around the axis of rotation as the vertex between the start and the end of the range or constant range.
  • the center of the area preferably forms the dead center of the area or the dead center of the area forms the center of the area.
  • the angular distance between the, preferably lower, area, in particular the center point or the dead center of the area, and the control edge of the, in particular first, descending lower wing recess of the one, in particular second, end wall is smaller than the angular distance between the area, in particular the center point or the dead center of the area, and the control edge of the, in particular the second, ascending lower wing recess of this, in particular the second, end wall and the angular distance between the area, in particular the center point or the dead center of the area, and the control edge of the, in particular the first, descending lower wing recess of the other, in particular the first, end wall greater than the angular distance between the area, in particular the center point or the dead center of the area, and the control edge of the, in particular the second, ascending lower wing recess of this, in particular the first, end wall.
  • the angular distance between the, preferably lower, area, in particular the center point or the dead center of the area, and the control edge of the, in particular first, descending lower wing recess of the one, in particular first, end wall is greater, equal to or smaller than the angular distance between the area, in particular the center point or the dead point of the area, and the control edge of the, in particular the first, descending lower wing recess of the other, in particular the second, end wall.
  • the angular distance between the, preferably lower, area, in particular the center point or the dead center of the area, and the control edge of the, in particular the second, ascending lower wing recess of the one, in particular the first, end wall is preferably larger, equal or smaller than the angular distance between the area, in particular the center point or the dead center of the area, and the control edge of the, in particular the second, ascending lower wing recess of the other, in particular the second, end wall.
  • the angular distance between the, preferably lower, area, in particular the center point or the dead center of the area, and the control edge of the, in particular first, descending lower wing recess of the one, in particular first, end wall is greater, equal to or smaller than the angular distance between the area, in particular the center point or the dead point of the area, and the control edge of the, in particular the second, ascending lower wing recess of the other, in particular the second, end wall.
  • the, in particular the lower, constant range extends asymmetrically into two adjacent flows, ie. H. in particular so that the constant area is arranged in a first tide and a second tide adjacent to the first tide, its circumferential extent in one tide being greater than the circumferential extent in the other tide.
  • the angular offset or distance between a separating web and a constant area or an area that defines an upper or lower dead point for a wing is advantageously related in the projection along the axis of rotation of the rotor between a straight line (leg) intersecting the axis of rotation through the center point in relation to the direction of rotation of the rotor the midpoint between the beginning and the end - of the separating web and a straight line (leg) intersecting the axis of rotation through the midpoint - in relation to the direction of rotation of the rotor the midpoint between the beginning and the end - of the constant range or the area, which defines the dead center for the wing, or measured the dead center.
  • the center point or dead point of the range or constant range is preferably on an angle bisector of the angular distance around the axis of rotation as the vertex between the beginning and the end of the range or constant range.
  • the center point of the separating web is preferably on an angle bisector of the angular distance around the axis of rotation as the apex between the beginning and the end of the separating web.
  • the center of the area preferably forms the dead center of the area or the dead center of the area forms the center of the area.
  • the center point of the separating web is preferably angularly offset around the axis of rotation as the vertex to the center point or the, in particular the lower, dead point of the area or, in particular, the lower, constant area.
  • the separating web of an end wall can extend asymmetrically into two adjacent flows, i.e. in particular that the separating web of the end wall is arranged in a first flow and a second flow adjacent to the first flow, with its circumferential extent in one flow is greater than the circumferential extent in the other flood.
  • the angular offset between two separating webs is advantageously measured in the projection along the axis of rotation between a straight line (leg) intersecting the axis of rotation of the rotor through the center point of one separating web and a straight line (leg) intersecting the axis of rotation of the rotor through the center point of the other separating web, whereby the axis of rotation forms the vertex of the angle.
  • the center point of a separating web is preferably on the bisector of the angular distance around the axis of rotation of the rotor as the apex between the control edges which limit the separating web in the direction of rotation of the rotor.
  • fluidic is to be understood as relating to fluid communication.
  • fluidically connected this means that they are connected in a fluid-communicating manner.
  • two components are fluidly separated or disconnected, it is meant that they are not connected in terms of fluid communication.
  • the example of a positive displacement pump shown in the figures is designed as a vane pump.
  • the vane pump has a rotor 1, which is connected to a pump shaft 5 in a rotationally fixed manner, for example via a shaft-hub connection.
  • the rotor 1 is surrounded on the outer circumference by a contour ring 10, which is often also referred to as a stroke ring.
  • a first end wall 30, which is formed, for example, by a first housing part, in particular a side plate, adjoins the rotor 1 at the end, and a second end wall 20 adjoins the rotor 1 at the end on a second side of the rotor 1 , which is formed, for example, by a second housing part, in particular a pressure plate.
  • the rotor 1 is between the first end wall 30 and the second end wall 20 bordered.
  • the shaft 5 is rotatably mounted on the first end wall 30, in particular the first housing part, and / or the second end wall 20, in particular the second housing part, for example by means of a pivot bearing.
  • the pivot bearing can be, for example, a roller bearing or a plain bearing.
  • the rotor 1 is rotatable relative to the first end wall 30, the second end wall 20 and the contour ring 10.
  • the direction of rotation of the rotor 1 in the conveying operation ie when conveying fluid from an inlet 31, 35, 21, 25 to an outlet 32, 36, 22, 26, is indicated by means of arrows for the direction of rotation.
  • the direction of rotation arrows in the Figures 3 and 4 are in opposite directions, as the Figure 3 the first end wall 30 based on the Figure 2 in a view from the left and the Figure 4 the second end wall 20 based on the Figure 2 show in a right view.
  • the contour ring 10 is enclosed between the first end wall 30 and the second end wall 20 and is non-rotatable relative to them.
  • the space extending annularly around the shaft 5, which is surrounded by the inner circumference of the contour ring 10 and axially delimited by the first end wall 30 and the second end wall 20, can also be referred to as a pump chamber.
  • the rotor 1 and vanes 2 supported by the rotor 1 are arranged in the pump chamber.
  • the contour ring 10 is a separate part from the first housing part and the second housing part.
  • the contour ring 10 can be formed integrally with the first housing part or the second housing part.
  • the first end wall 30, in particular the first housing part, and the second end wall 20, in particular the second housing part, the contour ring 10 and the rotor 1 including the vanes 2, and optionally the shaft 5, form a pump insert that can be inserted into a, for example cup-shaped outer housing (not shown) can be used.
  • the outer housing has at least one inner peripheral wall and an end wall.
  • a first seal 7 and a second seal 8 can be arranged between the pump insert and the inner circumference of the outer housing.
  • the first seal 7 can be arranged between the first housing part and the inner circumference of the outer housing.
  • the first housing part can have a, in particular groove-shaped, recess running around its outer circumference, in which the in particular ring-shaped seal 7 (for example an O-ring) is seated.
  • the second seal 8 can be arranged between the second housing part and the inner circumference of the outer housing.
  • the second housing part can have a, in particular groove-shaped, recess running around its outer circumference, in which the, in particular, annular seal 8 (for example an O-ring) is seated.
  • a suction chamber can be formed between the first seal 7 and the second seal 8, from which the fluid is conveyed via the pump chamber to at least one pressure chamber.
  • the at least one pressure chamber can be arranged or formed between the end wall of the outer housing and the first housing part 30.
  • the vane pump shown in the example has a double-flow design, i.
  • the at least one pressure chamber can be a common pressure chamber into which fluid is conveyed via the first fluid path and the second fluid path, or a first pressure chamber into which fluid is conveyed via the first fluid path, and a second pressure chamber into which fluid is conveyed via the second Fluid path is promoted include.
  • the first pressure chamber and the second pressure chamber can be sealed off from one another, for example by means of a seal (not shown).
  • the seal can for example be arranged between the end wall of the outer housing and the first housing part.
  • the first end wall and / or the second end wall, in particular the relevant housing part can each have a recess open towards the blades 2, which forms a first inlet 31, 21, which is assigned to the first fluid path, arranged between the suction chamber and the pump chamber and connects the suction chamber and the pump chamber to one another in a fluid-communicating manner.
  • the first end wall and / or the second end wall, in particular the relevant housing part can each have a recess which is open towards the blades 2 and which forms a first outlet 32, 22 which is assigned to the first fluid path, between the at least one pressure chamber and the Pump chamber is arranged and connects the at least one pressure chamber and the pump chamber to one another in a fluid-communicating manner.
  • the first housing part 30 can have the recess forming the first outlet 32, in particular a channel, which is open to the blades 2 and to the end wall of the outer housing and / or opens into the at least one pressure chamber, for example.
  • the inlets 31, 21 are each designed as a radially open recess in the respective end wall 30, 20 or in the respective housing part.
  • the inputs 31, 21 are axially opposite one another.
  • the outlet 32 is designed as an opening in the first end wall 30 or the first housing part.
  • the outlet 22 is designed as a recess in the second end wall 20 or the second housing part.
  • the outputs 32, 22 are axially opposite one another.
  • the outputs 32, 22 are connected to one another via a channel 102 in the contour ring 10.
  • the channel 102 is designed as an opening in the contour ring 10.
  • the first end wall and / or the second end wall, in particular the relevant housing part can each have a recess open towards the blades 2, which forms a second inlet 35, 25, which is assigned to the second fluid path, arranged between the suction chamber and the pump chamber and connects the suction chamber and the pump chamber to one another in a fluid-communicating manner.
  • the first end wall and / or the second end wall, in particular the relevant housing part can each have a recess which is open towards the blades 2 and which forms a second outlet 36, 26 which is assigned to the second fluid path, between the at least one pressure chamber and the Pump chamber is arranged and connects the at least one pressure chamber and the pump chamber to one another in a fluid-communicating manner.
  • the first housing part 30 can have the recess forming the second outlet 36, in particular a channel, which is open to the blades 2 and to the end wall of the outer housing and / or opens into the at least one pressure chamber, for example.
  • the inlets 35, 25 are each formed as a radially open recess in the respective end wall 30, 20 or in the respective housing part.
  • the inputs 35, 25 are axially opposite one another.
  • the outlet 36 is designed as an opening in the first end wall 30 or the first housing part.
  • the outlet 26 is designed as a recess in the second end wall 20 or the second housing part.
  • the outputs 36, 26 are axially opposite one another.
  • the outputs 36, 26 are connected to one another via a channel 103 in the contour ring 10.
  • the channel 103 is designed as an opening in the contour ring 10.
  • a first delivery chamber which is assigned to the first fluid path
  • a second delivery chamber which is assigned to the second fluid path
  • the rotor 1 has, in particular, slot-shaped recesses that serve as guides.
  • a conveying element namely a wing 2
  • Each of the vanes 2 is at its recess radially or away from the axis of rotation D of the rotor 1 and displaceable towards the axis of rotation D of the rotor 1, in particular guided with a single translational degree of freedom, displaceable back and forth, for example from the Figure 1 is recognizable.
  • the blades 2 are rotated with the rotor 1.
  • a delivery cell 4 is formed between adjacent blades 2, the volume of which changes as a function of the rotational position of the rotor 1 about its axis of rotation D.
  • the pump Since the pump has a plurality of vanes 2, in particular evenly distributed over the circumference, it also has a corresponding number of delivery cells 4. In each of the two delivery chambers there are several delivery cells 4.
  • the blades 2 and the rotor 1 form with the first end wall 30 a first sealing gap and with the second end wall 20 a second sealing gap.
  • the inner circumferential surface of the contour ring 10 has an inner contour 101, which causes the vanes 2 to extend at least once (increase in volume of the delivery cell 4) and retract once (decrease in the volume of the delivery cell 4) during a full revolution of the rotor 1.
  • the vane pump shown in the example of the figures is double-stroke, d. H. formed with two conveying chambers, the blades 2 extending once while passing through a conveying chamber and retracting once when they are moved through the conveying chamber by means of rotation of the rotor. This has the effect that the vanes 2 extend, retract, extend and retract again during one full revolution of the rotor 1, or, in other words, extend twice and retract twice.
  • a conveyor cell 4 is formed between adjacent vanes 2, the volume of which is increased or decreased by the extension and retraction of the vanes 2 delimiting this conveyor cell 4, namely depending on the inner contour 101 of the inner circumferential surface of the contour ring 10.
  • the rotor 1 has a lower wing chamber 3 for each wing 2.
  • Each wing 2 forms a movable wall of its associated lower wing chamber 3.
  • the lower wing chambers 3 can have a greater width extending in the circumferential direction than the slot-shaped recesses which are used to guide the wings 2.
  • Each of the lower wing chambers 3 has a first opening which opens out towards the first end wall, and a second opening which opens out towards the second end wall 20.
  • the first end wall 30 adjoining the end face on the first side of the rotor 1 has elongated ones in the circumferential direction for the pressure supply or pressure control of the lower wing chambers 3 extending, in particular curved about the axis of rotation D, lower wing recesses 33, 34, 37, 38 on ( Figure 3 ).
  • the lower wing recesses 33, 34, 37, 38 each form an arcuate section that runs around the axis of rotation D and are arranged one behind the other or in series in the direction of rotation, so that each first opening of the lower wing chambers 3 each of the lower wing recesses 33, 34, 37, 38 during one complete revolution of the rotor 1 sweeps over one another.
  • the lower wing chamber 3 assigned to this opening is fluidly connected to this lower wing recess, whereby the lower wing chamber 3 can be pressurized or depressurized, for example.
  • a separating web 335 is formed between the lower wing recess 33 and the lower wing recess 34, which separates the lower wing recesses 33 and 34 from one another.
  • a separating web 345 is formed between the lower wing recess 34 and the lower wing recess 37, which separates the lower wing recesses 34 and 37 from one another.
  • a separating web 375 is formed between the lower wing recess 37 and the lower wing recess 38, which separates the lower wing recesses 37 and 38 from one another.
  • a separating web 385 is formed between the lower wing recess 38 and the lower wing recess 33, which separates the lower wing recesses 38 and 33 from one another.
  • the second end wall 20 adjoining the end face of the second side of the rotor 1 has elongated lower wing recesses 23, 24, 27, 28 extending in the circumferential direction, in particular curved about the axis of rotation D, for the pressure supply or pressure control of the lower wing chambers 3 ( Figure 4 ).
  • the lower wing recesses 23, 24, 27, 28 each form an arcuate section rotating around the axis of rotation D and are arranged one behind the other or in series in the direction of rotation, so that every second opening of the lower wing chambers 3 each of the lower wing recesses 23, 24, 27, 28 during one complete revolution of the rotor 1 sweeps over one another.
  • the lower wing chamber 3 assigned to this opening is fluidly connected to this lower wing recess, whereby the lower wing chamber 3 can be pressurized or depressurized, for example.
  • an in particular groove-shaped channel 239 which is open towards the rotor and which connects the lower wing recess 23 with the lower wing recess 24 is formed by the end wall between the lower wing recess 23 and the lower wing recess 24 connects fluid-communicating as a hydraulic bottleneck.
  • the width and / or depth of the channel 239 is / are smaller than the width and / or depth of the end of the lower wing recess 23 and / or the lower wing recess 24 adjacent to the channel 239.
  • a flank of the channel 239 is formed by a projection 235 which extends from the outer flank of the lower wing recess 23 and the outer flank of the lower wing recess 24 towards the axis of rotation D.
  • a throttled fluid exchange between the recesses 23 and 24 can take place through the channel 239.
  • the end wall between the lower wing recess 27 and the lower wing recess 28 forms a particularly groove-shaped channel 279 which is open towards the rotor and which connects the lower wing recess 27 with the lower wing recess 28 as a hydraulic constriction in a fluid-communicating manner.
  • the width and / or depth of the channel 279 is / are smaller than the width and / or depth of the end of the lower wing recess 27 and / or the lower wing recess 28 adjoining the channel 279.
  • a flank of the channel 279 is formed by a projection 275 which extends from the outer flank of the lower wing recess 27 and the outer flank of the lower wing recess 28 towards the axis of rotation D.
  • a throttled fluid exchange between the recesses 27 and 28 can take place through the channel 279.
  • the projection 235, 275 can be referred to as a separating web which connects the adjacent lower wing recesses to one another in a throttled manner.
  • the channels 239 and / or 279 can be dispensed with and instead a separating web can be formed in the direction of rotation around the axis of rotation D between the under wing recesses 23 and 24 and / or 27 and 28, which fluidically separates the under wing recesses 23 and 24 or 27 and 28 from one another separates.
  • a separating web 245 is arranged between the lower wing recess 24 and the lower wing recess 27, which separates the lower wing recesses 24 and 27 from one another.
  • a separating web 285 is arranged between the lower wing recess 28 and the lower wing recess 23, which separates the lower wing recesses 28 and 23 from one another.
  • the first openings of the lower wing chambers 3 not only sweep over the lower wing recesses 33, 34, 37, 38, but also the separating webs 335, 345, 375, 385, or the second openings of the lower wing chambers 3, not only the lower wing chambers 23, 24, 27, 28, but also the separating webs 245, 285 and the channels 239, 279 and / or the projections 235, 275 or the separating webs (not shown) provided as an alternative to the channels or projections.
  • the first housing part forming the first end wall 30 has a channel 334 which opens into the lower wing recess 33.
  • the channel 334 connects the pressure side, for example the first outlet 32 or the at least one pressure chamber or the first pressure chamber in a fluid-communicating manner with the lower wing recess 33.
  • the lower wing recess 33 and the lower wing chamber (s) 3, the first opening of which is in one position, are in which it at least partially overlaps the lower wing recess 33, supplied with pressure fluid.
  • the first housing part has a channel 374 which opens into the lower wing recess 37.
  • the channel 374 connects the pressure side, for example the second outlet 36 or the at least one pressure chamber or the second pressure chamber in a fluid-communicating manner with the lower wing recess 37.
  • the lower wing recess 37 and the lower wing chamber (s) 3, the first opening of which is in one position, are in which it at least partially overlaps the lower wing recess 37, supplied with pressure fluid.
  • the lower wing recesses 34, 38 are closed off with respect to the suction side and the pressure side of the first end wall 30, that is to say that the first housing part does not have a channel that communicates the pressure side or the suction side of the first end wall 30 with the lower wing recesses 34, 38 connects.
  • the channels 334, 374 can open into the lower wing recesses 34, 38, the lower wing recesses 33, 37 being closed off with respect to the suction side and the pressure side.
  • the first housing part form a further channel which opens into the lower wing recess 34 and connects the suction side or the pressure side fluidly communicating with the lower wing recess 34, and also form a further channel which opens into the lower wing recess 38 and the suction side or the pressure side with fluid communication the lower wing recess 38 connects.
  • the lower wing recesses 23, 24 are closed off in relation to the suction side and the pressure side of the second end wall 20, that is to say that the second housing part does not have a channel that communicates the pressure side or the suction side of the second end wall 20 with the lower wing recesses 23, 24 connects.
  • the lower wing recesses 27, 28 are closed off with respect to the suction side and the pressure side of the second end wall 20, that is, the second housing part does not have a channel that is the pressure side or the suction side of the second end wall 20 connects to the lower wing recesses 27, 28 in a fluid-communicating manner.
  • the lower wing recess 23 of the second end wall 20 is supplied with pressurized fluid via the lower wing chambers 3 from the lower wing recess 33 of the first end wall 30.
  • the fluid flows axially through the lower wing chambers 3 from the lower wing recess 33 of the first end wall 30 into the lower wing recess 23 of the second end wall 20.
  • the lower wing recess 24 of the second end wall 20 is supplied with pressure fluid via the channel 239 through the lower wing recess 23 of the second end wall 20.
  • the lower wing recess 34 of the first end wall 30 is supplied with pressurized fluid via the lower wing chambers 3 from the lower wing recess 24 of the second end wall 20.
  • the fluid flows axially through the lower wing chambers 3 from the lower wing recess 24 of the second end wall 20 into the lower wing recess 34 of the first end wall 30.
  • the fluid is forced axially through the lower wing chambers 3 and thus the rotor 1, whereby the pressurization of the wings 2 is improved, in particular takes place evenly.
  • the lower wing recess 27 of the second end wall 20 is supplied with pressurized fluid via the lower wing chambers 3 from the lower wing recess 37 of the first end wall 30.
  • the fluid flows axially through the lower wing chambers 3 from the lower wing recess 37 of the first end wall 30 into the lower wing recess 27 of the second end wall 20.
  • the lower wing recess 28 of the second end wall 20 is supplied with pressure fluid via the channel 279 through the lower wing recess 27 of the second end wall 20.
  • the lower wing recess 38 of the first end wall 30 is supplied with pressurized fluid via the lower wing chambers 3 from the lower wing recess 28 of the second end wall 20.
  • the fluid flows axially through the lower wing chambers 3 from the lower wing recess 28 of the second end wall 20 into the lower wing recess 38 of the first end wall 30.
  • the fluid is forced axially through the lower wing chambers 3 and thus the rotor 1, whereby the pressurization of the wings 2 is improved, in particular takes place evenly.
  • the lower wing recesses 33, 34, 37, 38, 23, 24, 27, 28 each have a control edge 331, 341, 371, 381, 231, 241, 271, 281 which, based on the direction of rotation of the rotor 1, has a beginning of their respective Form lower wing recess 33, 34, 37, 38, 23, 24, 27, 28.
  • the lower wing recesses 33, 34, 37, 38, 23, 24, 27, 28 each have a control edge 332, 342, 372, 382, 232, 242, 272, 282 which, based on the direction of rotation of the Rotor 1 form one end of their respective lower wing recess 33, 34, 37, 38, 23, 24, 27, 28.
  • the control edges 241, 232 are formed by the projection 235 and the control edges 281, 272 are formed by the projection 275.
  • the lower wing recesses 33, 34, 37, 38, 23, 24, 27, 28 each have a base which delimits the respective lower wing recess along the axis of rotation D with regard to its depth. While the lower wing recesses 34, 38, 23, 24, 27, 28 each have a continuous floor, the floor of the lower wing recesses 33, 37 is interrupted by the channels 334, 374 opening into the lower wing recesses 33, 37.
  • the transition 333 at which the bottom of the lower wing recess 33 merges into a wall of the channel 334, is angularly offset to the control edge 331 and the control edge 332 relative to the axis of rotation D as the apex, in particular approximately in the middle, such as in the middle third between the control edges 331, 332 arranged.
  • the bottom of the lower wing recess 33 is formed between the control edge 331 and the transition 333.
  • the transition 373 at which the bottom of the lower wing recess 37 merges into a wall of the channel 374, is angularly offset to the control edge 371 and the control edge 372 with respect to the axis of rotation D as the apex, in particular closer to the control edge 372 than to the control edge 371, in particular arranged in the third of the lower wing recess 37 adjoining the control edge 372.
  • the bottom of the lower wing recess 37 is formed between the control edge 371 and the transition 373.
  • the opening cross section of the channel 334 and the opening cross section of the channel 374 differ from one another.
  • the opening cross section of the channel 334 is larger than the opening cross section of the channel 374.
  • the channels 334, 374 are each formed as an opening in the first end wall 30 or the first housing part.
  • the width at the beginning of the lower wing recesses 33, 37, 23, 27, which extends in the radial direction in relation to the axis of rotation D, is smaller than the width, which extends in the radial direction in relation to the axis of rotation D, at the end of the respective lower wing recess 33, 37, 23, 27
  • the width at the beginning of the lower wing recesses 34, 38, 24, 28, which extends in the radial direction in relation to the axis of rotation D is greater than the width, which extends in the radial direction in relation to the axis of rotation D, at the end of the respective lower wing recess 34, 38, 24, 28.
  • the contour ring 10 has the inner contour 101.
  • the inner contour 101 has a first ascending area 11, a constant area 12, a first descending area 13, a constant area 14, a second ascending area 15, a constant area 16, a second descending area 17 and a constant area 18, which with a full revolution are traversed in the order mentioned by the wings 2 sliding along the inner contour 101.
  • a wing 2 passes through area 11 or 15, it moves it emerges from the rotor 1, which is why these areas are referred to as rising areas 11, 15.
  • a wing 2 passes through the area 13 or 17, it moves into the rotor 1, which is why these areas are referred to as descending areas 13, 17.
  • the ascending area 11 and the descending area 13 are assigned to the first tide and are therefore referred to as the first ascending area 11 and the first descending area 13.
  • the ascending area 15 and the descending area 17 are assigned to the second tide and are therefore referred to as the second ascending area 15 and the second descending area 17.
  • the entrance 31 and / or 21 is arranged in relation to the first ascending area 11 of the inner contour 101 in such a way that the wing 2, which slides along the first ascending area 11, sweeps over the entrance 31 or 21, whereby the on the wing 2 fills the adjacent pumping cell 4 with fluid from the inlet 31 and 21, respectively.
  • the lower wing recess 33 is arranged in relation to the first ascending area 11 of the inner contour 101 in such a way that the lower wing chamber 3, the associated wing 2 of which slides along the first rising area 11, is at least partially overlapping with the lower wing recess 33 with its first opening, whereby the lower wing recess 33 is connected to the lower wing chamber 3 in a fluid-communicating manner when the associated wing 2 is located in the first ascending region 11 of the inner contour 101.
  • the extension of the wing 2 out of the rotor 1 can be supported by pressurized fluid from the lower wing recess 33 and it can be ensured that the wing 2 rests against the inner contour 101.
  • the lower wing recess 23 is arranged in relation to the first ascending area 11 of the inner contour 101 in such a way that the lower wing chamber 3, the associated wing 2 of which slides along the first rising area 11, is at least partially overlapping with the lower wing recess 23 with its second opening, whereby the lower wing recess 23 is connected to the lower wing chamber 3 in a fluid-communicating manner when the associated wing 2 is located in the first ascending region 11 of the inner contour 101.
  • the extension of the wing 2 from the rotor 1 can be supported by fluid from the lower wing recess 23, the lower wing recess 24 being supplied with fluid from the via the channel 239 Lower wing recess 23 is supplied. It can also be ensured in this way that the wing 2 rests against the inner contour 101.
  • the lower wing recess 23 is in turn supplied with fluid from at least one of the lower wing chambers 3, as will be described further below.
  • the lower wing chamber 3 Due to the interaction between the lower wing chamber 3, the wing 2 of which passes through the first ascending area 11, and the lower wing recesses 33, 23, the latter can be referred to as the first rising lower wing recesses 23, 33.
  • the exit 32 and optionally the recess 22 formed by the second end wall 20 are arranged in relation to the first descending area 13 of the inner contour 101 in such a way that the wing 2, which slides along the first descending area 13, the exit 32 or the recess 22, whereby the pumping cell 4 adjacent to the wing 2 empties into the outlet 32 and optionally into the recess 22.
  • the lower wing recess 34 is arranged in relation to the first descending area 13 of the inner contour 101 in such a way that the lower wing chamber 3, the associated wing 2 of which slides along the first descending area 13, is with its first opening at least partially overlapping with the lower wing recess 34, whereby the lower wing recess 34 is connected to the lower wing chamber 3 in a fluid-communicating manner when the associated wing 2 is located in the first descending region 13 of the inner contour 101. It can thereby be ensured that the wing 2 also rests against the inner contour 101 when it is retracted.
  • the lower wing recess 24 is arranged in relation to the first descending area 13 of the inner contour 101 in such a way that the lower wing chamber 3, the associated wing 2 of which slides along the first descending area 13, with its second opening at least partially overlaps the lower wing recess 24, whereby the lower wing recess 24 is connected to the lower wing chamber 3 in a fluid-communicating manner when the associated wing 2 is located in the first descending region 13 of the inner contour 101.
  • the lower wing chamber 3 Due to the interaction between the lower wing chamber 3, the wing 2 of which passes through the first descending region 13, and the lower wing recesses 34, 24, the latter can be referred to as the first descending lower wing recesses 24, 34.
  • the entrance 35 and / or 25 is arranged in relation to the second ascending area 15 of the inner contour 101 in such a way that the wing 2, which slides along the second ascending area 15, sweeps over the entrance 35 or 25, whereby the on the wing 2 adjoining pumping cell 4, filled with fluid from the inlet 35 and 25, respectively.
  • the lower wing recess 37 is arranged in relation to the second ascending area 15 of the inner contour 101 in such a way that the lower wing chamber 3, the associated wing 2 of which slides along the second ascending area 15, with its first opening at least partially overlaps the lower wing recess 37, whereby the lower wing recess 37 is connected to the lower wing chamber 3 in a fluid-communicating manner when the associated wing 2 is located in the second ascending region 15 of the inner contour 101.
  • the extension of the wing 2 out of the rotor 1 can be supported by pressurized fluid from the lower wing recess 37.
  • the lower wing recess 27 is arranged in relation to the second ascending area 15 of the inner contour 101 in such a way that the lower wing chamber 3, the associated wing 2 of which slides along the second rising area 15, with its second opening at least partially overlaps the lower wing recess 27, whereby the lower wing recess 27 is connected to the lower wing chamber 3 in a fluid-communicating manner when the associated wing 2 is located in the second ascending region 15 of the inner contour 101.
  • the extension of the wing 2 out of the rotor 1 can be supported by fluid from the lower wing recess 27, the lower wing recess 28 being supplied with fluid from the lower wing recess 27 via the channel 279.
  • the lower wing recess 27 is in turn supplied with fluid from at least one of the lower wing chambers 3, as will be described further below.
  • the exit 36 and optionally the recess 26 formed by the second end wall 20 are arranged in relation to the second descending area 17 of the inner contour 101 in such a way that the wing 2, which slides along the second descending area 17, the exit 36 or the recess 26, whereby the pumping cell 4 adjoining the wing 2 empties into the outlet 36 and optionally into the recess 26.
  • the under wing recess 38 is relative to the second
  • the descending area 17 of the inner contour 101 is arranged so that the lower wing chamber 3, the associated wing 2 of which slides along the second descending area 17, is at least partially overlapping with the lower wing recess 38 with its first opening, whereby the lower wing recess 38 is connected to the lower wing chamber 3 in a fluid-communicating manner is when the assigned wing 2 is located in the second descending area 17 of the inner contour 101.
  • the lower wing recess 28 is arranged in relation to the second descending area 17 of the inner contour 101 in such a way that the lower wing chamber 3, the associated wing 2 of which slides along the second descending area 17, with its second opening at least partially overlaps the lower wing recess 28, whereby the lower wing recess 28 is connected to the lower wing chamber 3 in a fluid-communicating manner when the associated wing 2 is located in the second descending region 17 of the inner contour 101.
  • the inner contour 101 forms a constant area 12 or 16. Between the first descending area 13 and the second ascending area 15 and between the second descending area 17 and the first ascending area 11, the inner contour 101 forms a constant area 14 and 18, respectively.
  • the constant areas 12, 14, 16, 18 are designed so that the wings 2, when they are moved through the constant area, in relation stand still on the rotor 1, d. H. neither retract nor extend.
  • the inner contour 101 can have a circular arc shape around the axis of rotation D as the center in the constant regions.
  • the constant ranges 12 and 16 can therefore be referred to as upper constant ranges 12, 16. Since the upper constant range 12 is assigned to the first tide, it can be referred to as the first upper constant range. Since the upper constant range 16 is assigned to the second tide, it can be referred to as the second upper constant range.
  • the constant ranges 14 and 18 can therefore be referred to as lower constant ranges 14, 18.
  • the constant areas 14, 18 separate the first and second tides from one another and are therefore not assigned to a specific tide or exclusively to one of the tides.
  • the angular distance between two adjacent blades 2 is smaller than the angular distance between the beginning and the end of the constant range 12, 14, 16, 18.
  • the rotor 1 can be rotated with respect to the contour ring 10 in one or more positions , in which a delivery cell 4 is completely in one of the constant areas 12, 14, 16, 18.
  • the rotor 1 can even be rotated in relation to the contour ring 10 into one or more positions in which at the same time a delivery cell 4 is located in the constant areas 12, 14, 16, 18.
  • the angular distance between two adjacent blades 2 is smaller than the angular distance between the opening of the inlet 31 opening into the pump chamber and the opening of the output 32 opening into the pump chamber Input 31 and output 32 are bridged or short-circuited.
  • the angular distance between two adjacent blades 2 is smaller than the angular distance between the opening of the inlet 35 opening into the pump chamber and the opening of the outlet 36 opening into the pump chamber. This also prevents a delivery cell 4 from being able to assume a position in which it bridges or shorts the input 35 and the output 36.
  • the angular distance between two adjacent blades 2 is smaller than the angular distance between the opening of the first outlet 32 opening into the pump chamber and the opening of the second input 35 opening into the pump chamber. This prevents a pumping cell 4 from being able to assume a position in which it bridges or shorts the output 32 and the input 35.
  • the angular distance between two adjacent blades 2 is smaller than the angular distance between the opening of the second outlet 36 opening into the pump chamber and the opening of the first input 31 opening into the pump chamber this prevents a conveyor cell 4 from being able to assume a position in which it bridges or short-circuits the output 36 and the input 31.
  • the lower wing recess 23 of the second end wall 20 lies axially opposite the lower wing recess 33.
  • the lower wing recesses 23, 33 are similar to one another. They are both arranged in the first ascending area 11.
  • the lower wing recess 24 lies axially opposite the lower wing recess 34.
  • the lower wing recesses 24, 34 are similar to one another. They are both arranged in the first descending area 13.
  • the lower wing recess 27 lies axially opposite the lower wing recess 37.
  • the lower wing recesses 27, 37 are similar to one another. They are both arranged in the second ascending area 15.
  • the lower wing recess 28 lies axially opposite the lower wing recess 38.
  • the lower wing recesses 28, 38 are similar to one another.
  • control edge 342 and the, in particular similar, control edge 242 are arranged angularly offset to one another in relation to the axis of rotation D as a vertex (in the projection along the axis of rotation D).
  • This has the effect that when the rotor 1 rotates in the direction of rotation provided during operation (see direction of rotation arrows in FIGS Figures 3 and 4 ) the lower wing chamber 3 of a wing 2 is first separated from the lower wing recess 34 and then separated from the lower wing recess 24, in particular when the rotor 1 continues to rotate by an angle of rotation by which the control edges 342 and 242 are angularly offset about the axis of rotation D as a vertex.
  • the rotor 1 can be rotated about the axis of rotation D into an angular position or have an angular position in which a lower wing chamber 3 is fluidly connected to the lower wing recess 24 and separated from the lower wing recess 34.
  • the control edges 242 and 342 can be angularly offset by an angle greater than 0 °, in particular greater than 5 ° and advantageously> 10 ° and / or ⁇ 30 ° around the axis of rotation D as the vertex.
  • the angular offset between the control edges 342 and 242 can be reversed. This can have the effect that the rotor 1 can be rotated into an angular position or can have an angular position in which a lower wing chamber 3 is fluidly connected to the lower wing recess 34 and separated from the lower wing recess 24.
  • the first opening of this lower wing chamber 3 can be closed or covered by the separating web 345 and the second opening of this lower wing chamber 3 by the separating web 245.
  • control edge 371 and the, in particular similar, control edge 271 are arranged angularly offset to one another in relation to the axis of rotation D as a vertex.
  • This has the effect that when the rotor 1 rotates in the direction of rotation provided during operation (see direction of rotation arrows in FIGS Figures 3 and 4 ) the lower wing chamber 3 of a wing 2 is only connected to the lower wing recess 37 in a fluid-communicating manner thereafter, in particular upon further rotation of the rotor 1 by an angle of rotation by which the control edges 371 and 271 are angularly offset, is connected to the lower wing recess 27 in a fluid-communicating manner.
  • the rotor 1 can be rotated into an angular position or have an angular position in which a lower wing chamber 3 is connected to the lower wing recess 37 in a fluid-communicating manner and is separated from the lower wing recess 27.
  • the control edges 271 and 371 can be angularly offset by an angle greater than 0 °, in particular greater than 5 ° and advantageously> 10 ° and / or ⁇ 30 ° around the axis of rotation D as the vertex.
  • the angular offset between the control edges 371 and 271 can be reversed. This can have the effect that the rotor 1 can be rotated into an angular position or can have an angular position in which a lower wing chamber 3 is connected to the lower wing recess 27 in a fluid-communicating manner and is separated from the lower wing recess 37.
  • the rotor 1 can, in particular from the angular position in which a lower wing chamber 3 is separated from the lower wing recess 24 and from the lower wing recess 34 with regard to fluid communication, in particular when the first opening of this lower wing chamber 3 from the separating web 345 and the second opening of this lower wing chamber 3 from the separating web 245 is at least partially or completely closed or covered, rotated or further rotated about the axis of rotation D into an angular position or have an angular position in which the lower wing chamber 3 regarding fluid communication is (still) separated from the lower wing recess 27 and (already) with fluid communication the lower wing recess 37 is connected.
  • the rotor 1 can, in particular from the angular position in which the lower wing chamber 3 is (still) separated from the lower wing recess 27 and (already) connected to the lower wing recess 37 in a fluid communication manner, about the axis of rotation D into an angular position or further rotated or have an angular position in which the lower wing chamber 3 is fluidly connected to the lower wing recess 27 and is fluidly connected to the lower wing recess 37.
  • the example shown is around the axis of rotation D as the vertex of the angular offset between the control edges 371 and 271 smaller than the angular offset between the control edges 342 and 242.
  • the angular offset between the Control edges 371 and 271 may be greater than the angular offset between the control edges 342 and 242 or equal to the angular offset between the control edges 342 and 242.
  • a straight line (see dash-dotted line in FIGS Figures 3 and 4 ), which through the center point 14m (see Figure 1 ) runs and intersects the axis of rotation D, run through the separating webs 345 and 245, in particular run through the center of the overlap region 346.
  • the straight line can run through the separating webs 385 and 285, in particular through the middle of the separating webs 385 and 285.
  • the angular offset between the control edge 342 and the center point 14m about the axis of rotation D as the vertex is different from the angular offset between the control edge 371 and the center point 14m.
  • the angular offset between the control edge 342 and the center point 14m is greater than the angular offset between the control edge 371 and the center point 14m. This results in a separating web 345 on the first end wall 30, the predominant part of which is displaced towards the first descending area.
  • the angular offset between the control edge 342 and the center point 14m could be smaller than or equal to the angular offset between the control edge 371 and the center point 14m.
  • the angular offset between the control edge 242 and the center point 14m about the axis of rotation D as the vertex is different from the angular offset between the control edge 271 and the center point 14m.
  • the angular offset between the control edge 242 and the center point 14m is smaller than the angular offset between the control edge 271 and the center point 14m. This results in a separating web 245 on the second end wall 20, the predominant part of which is displaced towards the second ascending area.
  • the angular offset between the control edge 242 and the center point 14m could be greater than or equal to the angular offset between the control edge 271 and the center point 14m.
  • the angular offset could be greater, measured over the area in which the lower wing recesses 33 and 34 are located.
  • the angular offset could be 180 °.
  • control edges 331 to 231 and / or 382 to 282 are not angularly offset from one another.
  • the control edges 381 and 281 are not angularly offset from one another around the axis of rotation D as the vertex, the fluid communication of a lower vane chamber 3 can be separated from the lower vane recesses 28 and 38 at the same time by rotating the rotor 1 around the axis of rotation D.
  • a lower vane chamber 3 can be connected to the lower vane recesses 23 and 33 in fluid communication by rotating the rotor 1 around the axis of rotation D at the same time.
  • control edges 331 and 231 are offset from one another and / or the control edges 382 and 282 are angularly offset from one another.
  • first one of the lower wing chambers 3 is connected to one of the lower wing recesses 23, 33 in a fluid-communicating manner (while it is not yet connected to the other of the lower wing recesses 23, 33) and by further turning the rotor 1 around the Axis of rotation D, the lower wing chamber 3 is connected to the other of the lower wing recesses 23, 33 in a fluid-communicating manner.
  • the center point 18m of the constant range 18, ie the point - based on the direction of rotation of the rotor 1 - is in the center (bisector of the Axis of rotation D as the vertex between the beginning and the end of the constant range 18) between the beginning and the end of the constant range 18, about the axis of rotation D as a vertex offset at an angle to the control edges 331, 231, 382, 282.
  • a straight line (see dash-dotted line in FIGS Figures 3 and 4 ), which through the midpoint 18m (see Figure 1 ) runs and intersects the axis of rotation D, run through the separating webs 285 and 385, in particular run through the center of the separating webs 285 and 385.
  • the straight line corresponds to the straight line described above, which runs through the center point 14m and intersects the axis of rotation D.
  • the angular offset between the control edge 382 and the center point 18m about the axis of rotation D as the vertex is, in the example shown, equal to the angular offset between the control edge 331 and the center point 18m.
  • the angular offset between the control edge 382 and the center point 18m about the axis of rotation D as a vertex could be smaller or larger than the angular offset between the control edge 331 and the center point 18m.
  • the angular offset between the control edge 282 and the center point 18m about the axis of rotation D as the vertex is, in the example shown, equal to the angular offset between the control edge 231 and the center point 18m.
  • the angular offset between the control edge 282 and the center point 18m about the axis of rotation D as a vertex could be smaller or greater than the angular offset between the control edge 231 and the center point 18m.
  • the angular offset between the control edges 341 and 342 is smaller than the angular offset between the control edges 371 and 372 and / or the angular offset between the control edges 331 and 332.
  • the angular offset between the control edges 241 and 242 is greater than, less than or equal to the angular offset between the control edges 271 and 272 and / or the angular offset between the control edges 231 and 232.
  • the width of the separating web 345 between the control edges 342 and 371 and / or the width of the separating web 385 between the control edges 382 and 331 is greater than the width of the first opening with which the lower wing chamber 3 opens towards the first end wall 30. This has the effect that the separating web 345 or the separating web 385 can completely close the relevant opening of the lower wing chamber 3 in a rotational position of the rotor 1.
  • the width of the separating web 245 between the control edges 242 and 271 and / or the width of the separating web 285 between the control edges 282 and 231 is greater than the width of the opening with which the lower wing chamber 3 opens towards the second end wall 20. This has the effect that the separating web 245 or the separating web 285 can completely close the relevant opening of the lower wing chamber in a rotational position of the rotor 1.
  • the angular distance between the control edges 242 and 371 or the distance 346, in particular the overlap area of the separating webs 245 and 345, ( Figure 3 ) between the control edges 242 and 371 in the projection along the axis of rotation D is larger than, alternatively smaller than or equal to the width of the openings with which a lower wing chamber 3 opens to the first end wall 30 and the second end wall 20.
  • the rotor 1 can assume or have a rotational position in which the separating web 345 closes the opening of a lower wing chamber 3 opening towards the first end wall 30 and the separating web 245 closes the opening of a lower wing chamber 3 opening towards the second end wall 20, for example when the distance 346 is greater than or equal to the width of the openings of the relevant lower wing chamber 3.
  • the rotor 1 could assume or have a rotational position in which the opening of a lower wing chamber 3 opening towards the first end wall 30 is fluidly connected to the lower wing recess 37 and the opening of this lower wing chamber 3 opening towards the second end wall 20 is fluidly connected to the lower wing recess 24 is connected, for example if the distance 346 is smaller than the width of the openings of the relevant lower wing chamber 3.
  • the rotor 1 can assume or have a rotational position in which the opening of a lower wing chamber 3 opening towards the first end wall 30 is fluidly connected to the lower wing recess 34 and the opening of this lower wing chamber 3 opening to the second end wall 20 is fluidly communicating with the lower wing recess 27 is connected.
  • the bisector of the angle about the axis of rotation D as the apex between the beginning and the end of the constant range 14) is not or only slightly offset at an angle and / or in relation to the midpoint of the separating web 385 (bisector of the angle about the axis of rotation D as the vertex between the control edges 382 and 331) and / or of the separating web 285 (bisector of the angle about the axis of rotation D as the vertex between the control edges 282 and 231) by 180 ° or offset at an angle of about 180 °.
  • the rotor 1 can be rotated into a rotary position or assume or have a rotary position in which the opening of a lower wing chamber 3 opening towards the first end wall 30 from the separating web 385 and the opening of this lower wing chamber 3 opening towards the second end wall 20 from the Separating web 285 is at least partially or completely closed.
  • the angular distance between the control edges 341 and 342 of the first descending lower wing recess 34 of the first end wall 30 around the axis of rotation D as the apex is smaller than the angular distance between the control edges 381 and 382 of the second descending lower wing recess 38 of the first end wall 30
  • the angular distance between the control edges 241 and 242 of the first descending lower wing recess 24 of the second end wall 20 around the axis of rotation D as the apex is greater than the angular distance between the control edges 281 and 282 of the second descending lower wing recess 28 of the second end wall 20.
  • the angular distance between the control edges 371 and 372 of the second ascending lower wing recess 37 of the first end wall 30 around the axis of rotation D as the apex is greater than the angular distance between the control edges 331 and 332 of the first ascending lower wing recess 33 of the first end wall 30.
  • the angular distance between the control edges 271 and 272 of the second ascending lower wing recess 27 of the second end wall 20 around the axis of rotation D as the apex is smaller than the angular distance between the control edges 231 and 232 of the first ascending lower wing recess 23 of the first end wall 30.
  • the center point of the separating web 335 between the control edges 332 and 341 (bisector of the angle around the axis of rotation D as the apex between the control edges 332 and 341) is angularly offset around the axis of rotation D by 180 ° to the center point of the separating web 375 between the control edges 372 and 381 (bisector of the angle about the axis of rotation D as the vertex between the control edges 372 and 381).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP20200950.2A 2019-10-10 2020-10-09 Pompe à palettes Pending EP3805521A1 (fr)

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DE102019127389.7A DE102019127389A1 (de) 2019-10-10 2019-10-10 Flügelzellenpumpe

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US6244830B1 (en) * 1996-12-23 2001-06-12 Luk, Fahrzeug-Jydraulik Gmbh & Co. Kg Vane-cell pump
WO2003056180A1 (fr) * 2001-12-27 2003-07-10 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Pompe
US20130280118A1 (en) * 2010-10-22 2013-10-24 Kayaba Industry Co., Ltd. Vane pump

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CN112648180B (zh) 2023-04-25
DE102019127389A1 (de) 2021-04-15
US11603838B2 (en) 2023-03-14
US20210108634A1 (en) 2021-04-15
CN112648180A (zh) 2021-04-13

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