EP2762674A2 - Aile pour un dispositif à palettes et dispositif à palettes - Google Patents

Aile pour un dispositif à palettes et dispositif à palettes Download PDF

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Publication number
EP2762674A2
EP2762674A2 EP14152663.2A EP14152663A EP2762674A2 EP 2762674 A2 EP2762674 A2 EP 2762674A2 EP 14152663 A EP14152663 A EP 14152663A EP 2762674 A2 EP2762674 A2 EP 2762674A2
Authority
EP
European Patent Office
Prior art keywords
wing
side wall
vane
rotor
cell device
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.)
Withdrawn
Application number
EP14152663.2A
Other languages
German (de)
English (en)
Other versions
EP2762674A3 (fr
Inventor
Eggert Bülk
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.)
Saeta GmbH and Co KG
Original Assignee
Saeta GmbH and Co KG
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 Saeta GmbH and Co KG filed Critical Saeta GmbH and Co KG
Publication of EP2762674A2 publication Critical patent/EP2762674A2/fr
Publication of EP2762674A3 publication Critical patent/EP2762674A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3446—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F01C1/3441—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 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 group F01C1/08 or F01C1/22 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
    • 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
    • F04C2/3446—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

Definitions

  • the invention relates to a wing for a vane cell device comprising a stator and a rotor rotatably mounted in the stator with a plurality of guide grooves, in each of which a wing can be movably mounted along a direction of movement.
  • the invention also relates to a vane cell device.
  • Such vane cell devices may be liquid-propelled vane pumps or liquid-propelled vane-cell engines.
  • Vane cell devices in the form of vane cell measuring devices are also known in which the amount of fluid flowing through the vane cell measuring device can be determined by counting the number of rotor revolutions, taking into account the fluid volume flow rate per revolution. They have, in a manner known per se, a stator in which a rotor is rotatably arranged. The stator has at least one inlet opening and at least one outlet opening for the fluid.
  • wings also called “slider”
  • the rotor in conjunction with the vanes, separates the low pressure space from the high pressure space.
  • the fluid channels When formed in the rotor fluid channels, the fluid channels can be designed advantageously with a large cross-section. However, this embodiment is comparatively expensive. When formed in the wing fluid channels, the fluid channels can be realized by design only with a smaller cross-section. But this embodiment is less expensive. It is known to limit the fluid channels by ribs. The ribs must have sufficient thickness to limit wear on the guide grooves. This also leads to the reduced cross section of the fluid channels.
  • the small cross-section formed in the wings fluid channels may result in increasing rotational speed of the rotor to a greatly increasing negative pressure in the spaces between the Nutrichn and the wings.
  • This negative pressure is reinforced by rotational centrifugal forces. From a limiting rotational speed of the rotor, this negative pressure can inhibit the wing movement out of the rotor in an undesired manner or outgas or vaporize liquid in the spaces between the groove bases and the wings, which leads to a further functional restriction and unwanted noise.
  • the present invention seeks to provide a wing and a vane cell device of the type mentioned, wherein in the wing fluid channels can be formed with a larger cross-section, so that the rotational speed of the rotor can be increased without causing wing stability or wear characteristics be worsened.
  • wings or vane devices should be cheaper to produce.
  • a wing for a vane cell device comprising a stator and a rotatably mounted in the stator rotor having a plurality of guide grooves, in each of which a wing can be movably mounted along a direction of movement, wherein the wing is a high pressure side and a high pressure side wherein the vane has a first sidewall formed on the high pressure side and a second sidewall formed on the low pressure side, and wherein the first and second sidewalls interconnect with each other by a plurality of lateral boundaries of fluid channels forming fins are connected, and wherein the first and the second side wall in the direction of movement of the wing offset from each other, so that the high-pressure side is only partially covered by the first side wall and the Niederdr The back is only partially covered by the second side wall.
  • the vane cell device may be, for example, a fluid-conveying, in particular fluid-conveying, vane pump or a fluid-driven, in particular liquid-driven, vane motor. It is also possible that the vane cell device is a vane cell measuring device. In this case, the amount of the fluid flowing through the vane cell measuring device or the working space can be counted by counting Rotor revolutions are calculated taking into account the fluid volume flow rate per revolution.
  • the vane cell device comprises, in a manner known per se, a fixed stator which delimits a working space. At least one inlet opening for fluid flowing into the working space and at least one outlet opening for fluid flowing out of the working space are provided in the wall of the working space.
  • the fluid may be, for example, a liquid such as fuel oil.
  • a rotor is rotatably mounted in a conventional manner.
  • the rotor may have a circular cylindrical basic shape.
  • the rotor in conjunction with the vanes, separates the low pressure space and the high pressure space of the vane cell device. This structure of a vane cell device is known per se.
  • the rotor has several guide grooves.
  • an inventive wing also called “slider”
  • the vanes move outwardly and inwardly along a direction of movement, in particular in the radial or predominantly radial direction of movement.
  • the wings may move at an angle to the radial direction in the guide grooves.
  • the wings may also be biased outwardly to conform to the spacing between the outer surface of the rotor and the inner surface of the working space as the rotor rotates. In particular, they are then pressed by the bias at any time to the inner surface of the working space.
  • the wings move only by centrifugal forces to the outside and are pressed to the inner surface of the working space. Furthermore, it is possible that in the rotor opposite wings are positively guided by push rods in a known manner, so that a migratory into the rotor wing can migrate out the opposite wing.
  • the wing according to the invention has a plurality of fluid channels.
  • the fluid channels can also run in the radial or predominantly radial direction with respect to the axis of rotation of the rotor.
  • the guide grooves of the rotor each have a radially inner groove base.
  • fluid flows into the forming clearance between the groove bottom and the radially inner end of the blade, particularly through the fluid passages, to avoid under pressure impeding movement of the blade.
  • the fluid is displaced from the free space on the groove base again in the radial direction outwards into the working space, namely through the fluid channels of the wings.
  • the fluid conveyed through the working space generates a pressure force on the high-pressure side of the vanes according to the invention.
  • the high-pressure side of the wings according to the invention is therefore that side on which the higher pressure prevails during operation of the vane cell device.
  • the opposite side of the wings according to the invention is referred to in this context as the low pressure side. It is correspondingly the side on which prevails during operation of the vane cell device, the lower pressure.
  • the wing according to the invention has a first side wall formed on the high pressure side and a second side wall formed on the low pressure side, wherein the first and second side walls are interconnected by a plurality of ribs forming lateral boundaries of the fluid passages.
  • the ribs may extend in the direction of movement of the wings, ie in the radial direction or predominantly radial direction.
  • the first and second sidewalls of the wing extend along parallel spaced planes, for example, radial planes which simultaneously define the high pressure and low pressure sides of the vanes.
  • the first and second side walls of the wing are in Movement direction of the wing, so in particular in the radial or predominantly radial direction, offset from one another.
  • the high pressure side is therefore only partially covered by the first side wall and the low pressure side is only partially covered by the second side wall.
  • the region of the low-pressure side opposite the region of the high-pressure side covered by the first side wall is not covered by the second side wall.
  • the wing In the remaining areas not covered by the side walls, the wing remains open to the sides.
  • the fluid channels are formed laterally bounded by the ribs between the respective opposite side wall of the wings and the inner wall of the guide grooves of the rotor.
  • the first and second side walls thus narrow the fluid channels only alternately and no longer simultaneously.
  • the cross-section of the fluid channels can therefore be made larger by a wall thickness of the first and second side walls than when the high-pressure and low-pressure sides are completely covered by side walls.
  • the wings according to the invention have sufficient rigidity during operation since sidewall regions remain on both sides, ie the high-pressure and low-pressure sides.
  • the risk of a movement of the wing inhibiting negative pressure can be reduced. This can the critical speed of the rotor and thus the performance of the vane cell device can be increased.
  • the wings can be produced in a simple and cost-effective manner.
  • wing supplement weights can usually be avoided in a cost effective manner, which are required in the prior art to compensate for a larger negative pressure in the groove bottom.
  • the ribs terminate flush with the outside of the first side wall in the portion free from the first side wall and that the ribs in the portion of the low pressure side free from the second side wall are flush with the outside of the second side wall to lock.
  • the ribs thus extend to the plane defined by the outside of the first and second side wall. As a result, the cross section of the fluid channels is maximized.
  • the first side wall is formed on the inner end of the blade, in particular the radially inner end of the blade, during operation (ie in the state inserted into the guide grooves of the rotor of a vane cell device), the second side wall being in operation outer end of the wing, in particular radially outer end of the wing is formed.
  • the compressive force exerted by the fluid on the high pressure side of the vanes causes the vanes to be subjected to corresponding support forces by the sidewalls of the guide grooves.
  • the supporting force acting on the high-pressure side occurs in the region of the radially inner end of the vanes during operation.
  • the supporting force acting on the low-pressure side occurs in the region of during operation radially outer end of the wing. This is reliably taken into account by the aforementioned embodiment.
  • the second side wall may have a thickening at its outer end in operation, in particular its radially outer end.
  • an additional weight may be arranged, for example a metal element or in the form of metal powder. If a metal element such as a metal sheet or a metal rod is provided as additional weights, this can be poured, for example, in the thickening of the second side wall.
  • the wing according to the invention may be formed in one piece.
  • the wing may have been manufactured by a plastic injection molding process. This results in a particularly simple production of the wings from a low-cost plastic.
  • edges of the side walls and / or the ribs may be rounded and / or bevelled.
  • these fillets or bevels can already be realized in the course of the plastic injection molding process by a suitable embodiment of the injection mold.
  • a vane cell device comprising a stator, which forms a working space with at least one inlet opening and at least one outlet opening for a fluid, and comprising one in which Working space of the stator rotatably mounted rotor, wherein the rotor has a plurality of guide grooves, in each of which a wing designed according to the invention is mounted, wherein between the wings and the guide grooves in each case a plurality of fluid channels are formed by the fluid between the working space and the internal base, in particular the radially inward ground, the respective guide groove can flow.
  • the wings may each be biased by spring means outwardly in the guide grooves of the rotor.
  • suitable springs can be arranged, for example, in the region of the respective groove base.
  • the bias can be realized in a particularly simple manner.
  • the wings are not biased, but are moved solely by centrifugal forces to the outside.
  • FIG. 1 shown rotor 10 of the vane cell device according to the invention for example, a vane pump or a vane motor or a vane cell measuring device, has in the example shown a circular cylindrical basic shape with a cylindrical outer surface 12.
  • the rotor 10 is rotatably arranged in a stator, not shown, of the vane cell device.
  • the stator defines a working space in which the rotor 10 is rotatably supported by the bearing pins 14, wherein the rotor 10 in conjunction with the wings realizes a separation of low pressure and high pressure space.
  • the rotor 10 is accordingly rotatably driven in the working space of the stator by a suitable rotary drive, for example an electric drive, so that fluid, for example a liquid, is conveyed from the inlet opening through the working space to the outlet opening becomes.
  • a suitable rotary drive for example an electric drive
  • the rotational movement of the rotor 10 is effected by the fluid flowing through the working space, for example a drive fluid.
  • the in FIG. 1 shown rotor 10 has four guide grooves 16 in the example shown.
  • the guide grooves 16 are distributed uniformly over the circumference of the rotor 10 in the example shown. Of course, more or less than four guide grooves may be provided. It is also possible that the guide grooves are not distributed uniformly over the circumference of the rotor 10.
  • Each of the guide grooves 16 has a radially inner groove bottom 18 and walls 20, 22.
  • FIG. 2 an inventive wing 24 of the vane cell device according to the invention is shown by way of example.
  • four of the in FIG. 2 shown wings 24 in the in FIG. 1 shown guide grooves 16 of the rotor 10 used.
  • Each of the wings 24 forms a plurality of parallel in the illustrated example
  • the fluid channels 26 are laterally bounded in each case by ribs 28, which also run in the radial direction in the state inserted into the rotor 10 in the example shown.
  • the wing 24 has a first side wall 30, defines the outer surface 32 when inserted into the rotor 10 wings 24 lying in a radial plane high pressure side of the wing 24.
  • the wing 24 has a first side wall 30 diametrically opposite second side wall 34, the outer side 36 defines a in the rotor 10 inserted state also lying in a radial plane low pressure side of the wing 24.
  • the first and second side walls 30, 34 and in particular their outer sides 32, 36 thus extend along parallel spaced planes.
  • FIG. 2 is for one recognizable that the first side wall 30 and the second side wall 34 in such a radial direction, namely in the longitudinal direction of the fluid channels 26, offset from each other, that the high pressure side is only partially covered by the first side wall 30 and the low pressure side only partially from the second side wall 34 is covered.
  • the region of the low-pressure side which is directly opposite the first side wall 30 is not covered by the second side wall 34.
  • the portion of the high-pressure side directly opposite the second side wall 34 is not covered by the first side wall 30.
  • the ribs 28 terminate flush with the outer side 34 of the first side wall 30 in the portion of the high pressure side free from the first side wall.
  • the ribs 28 terminate flush with the outside of the second side wall 34 in the section of the low-pressure side that is free from the second side wall 34.
  • the first side wall 30 is in the rotor 10 inserted state at the radially inner end of the wing 24 is formed.
  • the second side wall 34 is formed corresponding to the radially outer end of the wing 24.
  • the wing 24 is integrally formed of a plastic material.
  • the wing 24 has been manufactured in a plastic injection molding process.
  • At reference numeral 38 is in FIG. 2 also to recognize a thickening 38 of the second side wall 34 at its radially outer end. If necessary, in this thickening 38, an additional weight, such as a metal rod or the like, poured.
  • FIG. 3 is the in FIG. 2 shown wings 24 inserted into one of the guide grooves 16 of the rotor 10 shown in part Fig. 1 shown.
  • the wing 24 is in a partially extended from the guide groove 16 in the radial direction state. Between the radially inner end of the wing 24 and the base 18 of the guide groove 16, a clearance 40 is thereby formed.
  • This clearance 40 is filled during the extension of the wing 24 by inflowing fluid in order to avoid a negative pressure.
  • the fluid flows through the fluid channels 26 formed between the wing 24 and the walls 20, 22 of the guide groove 16 in the space 40. If the wing 24 moves radially inward again, the fluid is displaced radially outward from the space 40 out, namely through the fluid channels 26.
  • FIG. 3 The funded by the wings 24 or flowing through the working space fluid exerts an in FIG. 3 indicated by the arrow 42 compressive force on the high pressure side of the wing 24 from.
  • This compressive force 42 causes the wing 24 according to the in FIG. 3
  • Supporting forces illustrated by the arrows 44, 46 are pressed against the walls 20, 22 of the guide groove 16. From the illustration in FIG. 3 is immediately apparent that the first side wall 30 and the second side wall 34 of the wing 24 according to the invention are located precisely where the supporting forces 44, 46 act and where, on the other hand, a sealing of the high-pressure side relative to the low-pressure side is required.
  • first and second side walls 30, 34 of the wing 24 only alternately constrict the fluid passages 26, so that the cross section of the fluid passages 26 can advantageously be increased.
  • edges of the first and second sidewalls 30, 34 are rounded and beveled to allow the most unimpeded flow of fluid out of and into the space 40.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP14152663.2A 2013-02-01 2014-01-27 Aile pour un dispositif à palettes et dispositif à palettes Withdrawn EP2762674A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202013000976.4U DE202013000976U1 (de) 2013-02-01 2013-02-01 Flügel für eine Flügelzellenvorrichtung sowie Flügelzellenvorrichtung

Publications (2)

Publication Number Publication Date
EP2762674A2 true EP2762674A2 (fr) 2014-08-06
EP2762674A3 EP2762674A3 (fr) 2016-11-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP14152663.2A Withdrawn EP2762674A3 (fr) 2013-02-01 2014-01-27 Aile pour un dispositif à palettes et dispositif à palettes

Country Status (3)

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US (1) US9650894B2 (fr)
EP (1) EP2762674A3 (fr)
DE (1) DE202013000976U1 (fr)

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WO2016181428A1 (fr) * 2015-05-14 2016-11-17 日産ライトトラック株式会社 Pompe à palettes pour un fluide compressible
DE102017204286A1 (de) * 2017-03-15 2018-09-20 Robert Bosch Gmbh Flügel für eine Flügelzellenmaschine
DE202017103110U1 (de) * 2017-05-23 2018-08-24 Saeta Gmbh & Co. Kg Flügelzellenpumpe oder -kompressor
US10344594B2 (en) 2017-08-24 2019-07-09 Woodward, Inc. Actuator bearing arrangement
CN112012799B (zh) * 2020-08-09 2021-11-12 肇庆高新区伙伴汽车技术有限公司 滑片式发动机

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DE202013000976U1 (de) 2014-05-08
US9650894B2 (en) 2017-05-16
US20140219853A1 (en) 2014-08-07
EP2762674A3 (fr) 2016-11-16

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