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WO2015090730A1 - Pompe oscillante avec arbre monté dans le stator - Google Patents

Pompe oscillante avec arbre monté dans le stator Download PDF

Info

Publication number
WO2015090730A1
WO2015090730A1 PCT/EP2014/074158 EP2014074158W WO2015090730A1 WO 2015090730 A1 WO2015090730 A1 WO 2015090730A1 EP 2014074158 W EP2014074158 W EP 2014074158W WO 2015090730 A1 WO2015090730 A1 WO 2015090730A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
drive shaft
stator
rotor
shaft
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.)
Ceased
Application number
PCT/EP2014/074158
Other languages
German (de)
English (en)
Inventor
Marian Kacmar
Raed Hamada
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to EP14799383.6A priority Critical patent/EP3084126B1/fr
Publication of WO2015090730A1 publication Critical patent/WO2015090730A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C3/00—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type
    • F04C3/06—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees
    • F04C3/08—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees of intermeshing engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • 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
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/082—Details specially related to intermeshing engagement type machines or engines
    • F01C1/084—Toothed wheels
    • 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
    • F01C3/00—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members
    • F01C3/06—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees
    • F01C3/08—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F01C3/085—Rotary-piston machines or engines with non-parallel axes of movement of co-operating members the axes being arranged otherwise than at an angle of 90 degrees of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing the axes of cooperating members being on the same plane
    • 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
    • F04C3/00—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type
    • F04C3/06—Rotary-piston machines or pumps, with non-parallel axes of movement of co-operating members, e.g. of screw type the axes being arranged otherwise than at an angle of 90 degrees

Definitions

  • the invention relates to a tumble pump. Background of the invention
  • An embodiment of a tumble pump is known from WO 2008/110155 AI.
  • an offset obliquely on a pump shaft of the tumble pump rotor is rotated by rotation of the pump shaft relative to a pump stator in a tumbling motion, so that between the
  • Pump rotor and the pump stator formed pump chambers are increased in volume and reduced. These chambers are connected to an input and an output of the tumble pump, so that a fluid is conveyed by the tumble pump.
  • a tumble pump can be provided with a shortened length. Furthermore, friction losses can be reduced with the tumble pump according to the invention.
  • the tumble pump comprises a pump stator attached to a housing of the tumble pump and a pump rotor guided in the pump stator, which is driven by a drive shaft by means of an oblique face such that it wobbles with its rotor axis about a drive axis of the drive shaft.
  • the drive shaft protrudes through the pump rotor through a through hole and is mounted in a bearing of the pump stator.
  • a rotation of the drive shaft may lead to a tumbling of the pump rotor with respect to the pump stator, whereby pump chambers formed between the pump stator and the pump rotor by a toothing be enlarged and reduced so that a fluid is conveyed by the tumble pump.
  • the pump stator and the pump rotor may have a cycloid-shaped toothing.
  • the drive shaft is mounted in the pump stator. This storage can be done in the radial and optionally in the radial direction.
  • the bearing in the pump stator opposite the bearing in the pump stator opposite
  • Both bearings or at least the bearing in the pump stator, can be designed as plain bearings.
  • radial forces can be absorbed by the two bearings and on the other hand, the sealing function can be decoupled between the mounted on the drive shaft pump shaft and the pump housing from the storage.
  • the bearing in the stator (and also the other bearings) can be designed with a smaller radius than the radius of the pump shaft, which is intended as a sealing point. This can lead to lower slide bearing speeds, which can counteract the generation of heat and friction.
  • the oblique face is provided by a pump shaft, which is positively placed on the drive shaft.
  • a positive connection of the pump shaft directly to the drive shaft can spare a driver.
  • the pump shaft is positively placed on the drive shaft.
  • the arrangement may also be more resistant to particles that can pass the pump shaft passing through a sealing point, since the use of a metallic sleeve in the housing is possible.
  • the drive shaft may have an additional sliding bearing (for example at an end opposite the pump stator).
  • the drive shaft carries a rotor of an electric motor as a drive.
  • the drive shaft can then in a
  • housing part of the tumble pump which carries a stator of the electric motor to be stored.
  • the drive shaft may be a one-piece shaft, which is mounted at its two ends in the stator and in a housing part.
  • the tumble pump further comprises a spring for pressing the drive shaft in the direction of the pump stator. In this way, the sealing function between the spherical surfaces of the
  • this axial force can be generated by carbon brushes of the electric motor (which have a spring).
  • the stator of the electric motor is offset in relation to the rotor of the electric motor in the axial direction such that when operating the motor, the drive shaft is moved by electromagnetic forces in the direction of the pump stator.
  • the axial force can also be generated directly by the electric motor, so that it is possible to dispense with a separate spring.
  • the drive shaft on two coupled drive shaft parts may support the rotor of an electric motor.
  • Another, second part of the drive shaft can carry the pump shaft.
  • the second part of the drive shaft may be mounted in the pump stator and in a further housing part.
  • the two parts of the drive shaft can be positively coupled by means of a pin. In a two-piece drive shaft radial forces and tilting moments can be particularly well received, since they can be distributed to several bearings for the drive shaft parts.
  • the passage opening has inside larger diameter than the drive shaft.
  • the pump rotor can tumble around the drive shaft.
  • the oblique end face is arranged on a side facing away from the electric motor of the tumble pump pump shaft.
  • the toothing of the pump stator faces the electric motor.
  • the oblique end face is arranged on a side facing the electric motor of the tumble pump side of the pump shaft.
  • the toothing of the pump stator is arranged on the side facing away from the electric motor.
  • the pump stator, the pump shaft and the pump rotor received (in that order) between a drive and a housing termination.
  • the spherical surfaces of the pump rotor point towards the drive.
  • One end of the drive shaft may be supported in the housing end part. Further, it is possible that one end of the drive shaft or a
  • Drive shaft part is mounted in a further housing part, which also receives a drive of the tumble pump, such as an electric motor.
  • Fig. 1 shows a cross section through a tumble pump according to a
  • Fig. 2 shows a cross section through a tumble pump according to another embodiment of the invention.
  • Fig. 3 shows a cross section of a portion of a tumble pump according to another embodiment of the invention.
  • a tumble pump 10 which has a housing 12, which is constructed from a plurality of housing parts, an end part 14 has an inlet or inlet 16 of the tumble pump 10.
  • a sealing member 20 provides a seal between a low-pressure region 24 and a high-pressure region 22 and a further end portion 26 serves as a pump stator 28th
  • the housing parts 14, 16, 20 and 26 are held together by a metal ring 30.
  • a shaft assembly 32 includes a drive shaft 34 which is journaled at one end in the support member 16 and at the other end in the pump stator 28 by means of plain bearings 36,38.
  • the one-piece drive shaft 34 carries a rotor 40 of the electric motor 18, which is received in a stator 42 received on the support member 16.
  • the drive shaft 34 carries a pump shaft 44 which is positively placed on the drive shaft 34.
  • the pump shaft 44 is guided in the sealing part 20 such that a seal between the
  • the pump shaft 34 provides an oblique (see FIG. 2) end face 46 which cooperates with and is mechanically coupled to a pump rotor 48.
  • the pump rotor 48 and the pump stator 28 provide spherical surfaces
  • Fluid from the low pressure region 24 is conveyed into the high-pressure region 22.
  • the pump rotor 48 has on its side facing away from the end face 46 a toothing, which is formed on a pump stator 28 on the
  • Gear teeth of the pump rotor 48 and the toothing of the pump stator 28 are designed, for example, as a cycloidal toothing, but can also be a different toothing.
  • the pump rotor has a through hole 49 through which the
  • the passage opening 49 has a larger one
  • the drive shaft 34 can be acted upon by a spring 51 in the axial direction with force, so that via the (positively connected) pump shaft 44, the pump rotor 48 is pressed against the pump stator 28. This can be done alternatively or additionally by a corresponding offset of the rotor 40 of the electric motor 18 relative to the stator 42.
  • FIG. 2 shows a second exemplary embodiment of the tumble pump 10, in which the components pump shaft 34, pump rotor 48 and pump stator 28 are arranged reversed in comparison to FIG. Next, the components pump shaft 34, pump rotor 48 and pump stator 28 are arranged reversed in comparison to FIG. Next, the components pump shaft 34, pump rotor 48 and pump stator 28 are arranged reversed in comparison to FIG. Next, the components pump shaft 34, pump rotor 48 and pump stator 28 are arranged reversed in comparison to FIG.
  • Drive shaft 34 has two shaft parts 34a and 34b. High pressure and
  • the housing 12 has a carrier part 16 ', which carries the drive 18 or the stator 42, the pump stator 28 and an end part 20', on which the pump stator 28 is seated.
  • the opposite end part 14 with the inlet 16 is connected to the support part 16 'by means of an attachment 56.
  • the end portion 20 ' has a further seal for the high-pressure region 24 with respect to the environment, which may be realized, for example, with a sealing ring 58 extending between the carrier part 16' and the end part 20 '.
  • the drive shaft 34 comprises a first part 34 a, which carries the rotor 40 of the electric motor 18 and which is positively coupled via a pin 60 with a second part 34 b, which carries the pump rotor 48.
  • the first part 34a is mounted in the housing 12 by means of a sliding bearing 36.
  • the second part 34b is mounted in the stator 28 in a first sliding bearing 38 and in the end part 20 'in a second sliding bearing.
  • the pin 60 can be offset on the drive shaft part 34b on the stator 28, so that the drive shaft part 34b in an axial direction (from the drive 18th away).
  • FIG. 3 also shows that the pump shaft has at least one channel 64, which communicates with the high-pressure region 22 and has at least one channel 66, which communicates with the low-pressure region 24.
  • fluid from the low pressure region may flow into a pump chamber 54 via the channel 66, is transported by the rotor about the axis of the shaft, and then forced into the channel 64 by reducing the pumping chamber 54 as the pump rotor 48 is skewed.

Landscapes

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

Abstract

L'invention concerne une pompe oscillante (10), comprenant un stator de pompe (28) fixé à un carter (12) de la pompe et un rotor de pompe (48) guidé dans le stator (28) et entraîné par un arbre d'entraînement (34) au moyen d'une face frontale oblique (46) de telle sorte qu'il oscille avec son axe de rotor autour d'un axe d'entraînement de l'arbre d'entraînement (34). Selon l'invention, l'arbre d'entraînement (34) traverse le rotor (48) par un orifice de passage (49) et est monté dans un palier du stator (28).
PCT/EP2014/074158 2013-12-20 2014-11-10 Pompe oscillante avec arbre monté dans le stator Ceased WO2015090730A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14799383.6A EP3084126B1 (fr) 2013-12-20 2014-11-10 Pompe oscillante avec arbre monté dans le stator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013226974.9 2013-12-20
DE102013226974.9A DE102013226974A1 (de) 2013-12-20 2013-12-20 Taumelpumpe mit im Stator gelagerter Welle

Publications (1)

Publication Number Publication Date
WO2015090730A1 true WO2015090730A1 (fr) 2015-06-25

Family

ID=51903887

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/074158 Ceased WO2015090730A1 (fr) 2013-12-20 2014-11-10 Pompe oscillante avec arbre monté dans le stator

Country Status (3)

Country Link
EP (1) EP3084126B1 (fr)
DE (1) DE102013226974A1 (fr)
WO (1) WO2015090730A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020124825A1 (de) 2020-09-23 2022-03-24 Kolektor Group D.O.O. Motor-Pumpe-Einheit
DE102021103306A1 (de) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Handgeführtes Druckflüssigkeitsgerät

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021115440A1 (de) 2021-06-15 2022-12-15 Schwäbische Hüttenwerke Automotive GmbH Rotationspumpe mit einer Axialschubbegrenzungseinrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965976A (en) * 1932-04-16 1934-07-10 James L Kempthorne Mechanism for pumps, compressors, and the like
US2380886A (en) * 1941-12-18 1945-07-31 Hydraulic Dev Corp Inc Balanced ball type vane pump or motor
US2821932A (en) * 1954-04-28 1958-02-04 Siam Fluid pumps or engines of the piston type
AT322362B (de) * 1973-03-12 1975-05-26 Keplinger Klaus Motor und/oder pumpe
EP1118769A2 (fr) * 2000-01-19 2001-07-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Compresseur à plateau en biais
WO2008110155A1 (fr) * 2007-03-13 2008-09-18 Cor Pumps + Compressors Ag Pompe ou moteur
DE102011080803A1 (de) * 2011-08-11 2013-02-14 Robert Bosch Gmbh Drehkolbenmaschine, die als Pumpe, Verdichter oder Motor arbeitet

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502004002805D1 (de) * 2003-09-11 2007-03-15 Cor Pumps & Compressors Ag Drehkolbenmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1965976A (en) * 1932-04-16 1934-07-10 James L Kempthorne Mechanism for pumps, compressors, and the like
US2380886A (en) * 1941-12-18 1945-07-31 Hydraulic Dev Corp Inc Balanced ball type vane pump or motor
US2821932A (en) * 1954-04-28 1958-02-04 Siam Fluid pumps or engines of the piston type
AT322362B (de) * 1973-03-12 1975-05-26 Keplinger Klaus Motor und/oder pumpe
EP1118769A2 (fr) * 2000-01-19 2001-07-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Compresseur à plateau en biais
WO2008110155A1 (fr) * 2007-03-13 2008-09-18 Cor Pumps + Compressors Ag Pompe ou moteur
DE102011080803A1 (de) * 2011-08-11 2013-02-14 Robert Bosch Gmbh Drehkolbenmaschine, die als Pumpe, Verdichter oder Motor arbeitet

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020124825A1 (de) 2020-09-23 2022-03-24 Kolektor Group D.O.O. Motor-Pumpe-Einheit
WO2022063585A1 (fr) 2020-09-23 2022-03-31 Kolektor Group D.O.O. Groupe moteur-pompe
DE102021103306A1 (de) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Handgeführtes Druckflüssigkeitsgerät
WO2022171512A1 (fr) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Dispositif de fluide sous pression actionné manuellement

Also Published As

Publication number Publication date
DE102013226974A1 (de) 2015-06-25
EP3084126A1 (fr) 2016-10-26
EP3084126B1 (fr) 2019-02-27

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