WO2018054622A1 - Organe de refoulement présentant un contour étanche - Google Patents

Organe de refoulement présentant un contour étanche Download PDF

Info

Publication number
WO2018054622A1
WO2018054622A1 PCT/EP2017/070870 EP2017070870W WO2018054622A1 WO 2018054622 A1 WO2018054622 A1 WO 2018054622A1 EP 2017070870 W EP2017070870 W EP 2017070870W WO 2018054622 A1 WO2018054622 A1 WO 2018054622A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
pump stator
drive shaft
delivery unit
sealing contour
Prior art date
Application number
PCT/EP2017/070870
Other languages
German (de)
English (en)
Inventor
Dieter Amesoeder
Marian Kacmar
Yihao Zhu
Fikret Selimi
Joerg Engelhardt
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
Publication of WO2018054622A1 publication Critical patent/WO2018054622A1/fr

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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • 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
    • F04C15/0042—Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0046—Internal leakage control
    • 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
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • Cycloid-shaped rotor toothing which cooperates with a formed on a pump stator cycloidal stator toothing combing.
  • the pump stator has a spherical peripheral surface corresponding to the circumferential surface of the rotor and a spherical recessed rotor bearing surface cooperating with the ball portion of the rotor.
  • the rotor and the pump stator thus have radially inwardly and radially outwardly with respect to a drive axis of the drive shaft spherical surfaces adjacent to the associated toothing.
  • the work spaces of the delivery unit formed between the teeth of rotor and pump stator are sealed by the locally locally contacting spherical surfaces and by the teeth themselves compared to other workrooms. Since the spherical surfaces of the rotor and the pump stator geometrically not exactly, but can be produced only within certain manufacturing tolerances occurs during operation of the delivery unit, a certain internal leakage between the work spaces, which reduces the performance of the delivery unit.
  • the delivery unit according to the invention with the characterizing features of the main claim has the advantage that the internal leakage of the delivery unit is reduced and the performance of the delivery unit is increased, by at the edge of the rotor toothing on the peripheral surface of the rotor and / or counter rotor and / or on the edge of the stator toothing on one with the
  • Ball portion of the rotor cooperating rotor bearing surface of the pump stator at least one protruding, circumferential sealing contour is formed.
  • the sealing contour forms a step on the peripheral surface of the rotor and / or counter-rotor or on the rotor bearing surface of the pump stator, since the step divides the peripheral surface into two regions.
  • the adjoining the toothing region of the peripheral surface is used for the seal and can be ground in an inlet process or in the course of operation of the delivery unit such that less leakage occurs.
  • the other area of the sealing contour forms a step on the peripheral surface of the rotor and / or counter-rotor or on the rotor bearing surface of the pump stator, since the step divides the peripheral surface into two regions.
  • the adjoining the toothing region of the peripheral surface is used for the seal and can be ground in an inlet process or in the course of operation of the delivery unit such that less leakage occurs.
  • the other area of the sealing contour forms a step on the peripheral surface of the rotor and / or counter-rotor or on the rotor bearing surface of the pump stator, since the step divides the peripheral surface into two regions.
  • Circumferential surface is not a functional surface and can be freely selected in shape and position and therefore does not have to be spherical.
  • the sealing contour is formed in each case linear, wherein the line of the sealing contour has a certain width, since the sealing contour in this way has a small surface, which after completion of the assembly of
  • Conveying units for example, at a band end of the production line, by a single run-in process can be quickly grinded, so that can be set on the delivery unit after a short time a small internal leakage.
  • sealing contours are provided, which are arranged parallel to and spaced apart from one another, similar to labyrinth seals, since the internal leakage can be further reduced in this way. It is also advantageous if the surface of the sealing contour is in each case spherical, since the sealing contour is ground in this way uniformly and thus achieves a good sealing effect.
  • the sealing contour is integrally formed on the rotor and / or counter rotor and / or pump stator, since the sealing contour is particularly easy to produce in this way. Due to the one-piece design, the sealing contour made of the same material as the material of the component on which the sealing contour is integrally formed.
  • the rotor, the counter rotor or the pump stator is made of a thermosetting plastic, since the parts are produced in this way on the one hand by the injection molding and on the other hand have a comparatively good dimensional and shape stability even at high temperatures.
  • Fig.l shows in section a partial view of a delivery unit according to a first embodiment
  • FIG. 3 shows a pump stator according to Fig.l
  • FIG. 4 shows in section a simplified partial view of a delivery unit according to a second embodiment.
  • Fig.l shows in section a partial view of a delivery unit according to a first embodiment.
  • the delivery unit 1 serves to convey a pumped medium, for example a liquid.
  • the delivery unit 1 has a drive shaft 2 and a driven by the drive shaft 2 rotor 3, which is rotatably mounted in a pump stator 8 and is formed on its peripheral surface 3.1 spherical or spherical segment-shaped.
  • the pump stator 8 has a circumferential surface 3.1 of the rotor 3 corresponding spherical or spherical section-shaped peripheral surface 8.1.
  • On one of the drive shaft 2 facing away from the rotor 3 has a
  • Stator teeth 9 meshing cooperates.
  • the stator toothing 9 is spherically recessed around a cooperating with the ball portion 4 of the rotor 3
  • Rotor bearing surface 10 of the pump stator 8 arranged around.
  • the drive shaft 2 has an oblique sliding plane 11 which cooperates with the rotor 3 and which causes the rotor 3 with its rotor axis 12 to wobble about a drive axis 14 of the drive shaft 2.
  • the rotor 3 is supported with its ball portion 4 on the rotor bearing surface 10 of the pump stator 8.
  • the drive shaft 2 is for example of a
  • Electric motor 13 driven in rotation.
  • work spaces 15 are formed in the teeth, which shrink by the rotation of the rotor 3 and enlarge and thereby squeeze out the fluid from individual work spaces 15 and suck in individual work spaces 15.
  • the conveying medium is supplied to the working spaces 15 via a feed channel 18 provided in the drive shaft 2 and at least one rotor channel 17 provided in the rotor 3 and via at least one of the rotor channels 17 and one in the drive shaft 2
  • Pumpenstators 8 at least one protruding, circumferential sealing contour 20 is formed.
  • the sealing contour 20 is exemplified on the rotor 3 and the pump stator 8 is formed.
  • the at least one sealing contour 20 is intended by Einschieifen ideal to the
  • the sealing contour 20 extends on the respective peripheral surface of the edge of the
  • Statorveriereung 9 along over the entire circumference around, so to three hundred and sixty degrees, and forms on the peripheral surface 3.1 of the rotor 3 and / or on the rotor bearing surface 10 of the pump stator 8 each have a step 21st
  • the sealing contour 20 may be formed each sealing lip-shaped or linear, wherein the line of the sealing contour 20 has a certain width. There may be provided a plurality of sealing contours 20 which are arranged parallel and spaced from each other.
  • the surface of the sealing contour 20 is formed, for example, each spherical or spherical segment-shaped.
  • the sealing contour 20 is integrally formed on the rotor 3 and / or the pump stator 8 according to the first embodiment, so that it is made of the same material as the material of the provided with the sealing contour 20 component.
  • the rotor 3 and the pump stator 8 are made, for example, by injection molding of a thermosetting plastic.
  • FIG. 2 shows a rotor according to the first embodiment of Fig.l and Figure 3 shows a pump stator according to the first embodiment of Fig.l.
  • FIG. 4 shows in section a simplified partial view of a delivery unit according to a second embodiment.
  • the delivery unit according to Figure 4 are compared to the delivery unit according to Fig.l to Fig.3 consistent or equivalent parts characterized by the same reference numerals.
  • Embodiment instead of a rotor and a pump stator two intermeshing rotors, ie, a rotor 3 and a counter rotor 6, each provided with an example cycloid-shaped rotor toothing 5.7.
  • a rotor 3 facing end face of the counter rotor 6 has the ball portion 4 and arranged around the ball portion 4, for example cycloidal
  • Rotor toothing 5 which cooperates with the formed on the rotor 3, for example, cycloid-shaped rotor toothing 5 meshing.
  • Rotor toothing 5 of the rotor 3 is at one with the ball portion 4 of
  • the rotor 3 is designed, for example, in one piece on the drive shaft 2.
  • the counter rotor 6 has an axis of rotation 24 which is inclined relative to the drive shaft 14 of the drive shaft 2 by an angle ⁇ .
  • the rotor 3 and the counter rotor 6 are arranged in a rotor receptacle 25 of a housing 26, wherein the rotor receptacle 25 a to the spherical peripheral surfaces 3.1,6.1 of the rotors 3.6
  • Circumferential wall 27 has.
  • At least the protruding, circumferential sealing contour 20 is formed on the peripheral surface 3.1 of the rotor and / or on the peripheral surface 6.1 of the counter-rotor 6 at the edge of the rotor toothing.
  • the sealing contour 20 forms as in the first embodiment, a step 21 on the peripheral surface 3.1 of the rotor 3 and / or on the peripheral surface 6.1 counter rotor 6.
  • the sealing contour 20 as in the first embodiment integrally formed on the rotor 3 and / or on the counter rotor 6 be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)

Abstract

On connaît déjà des organes de refoulement comprenant un arbre d'entraînement et un rotor entraîné par cet arbre d'entraînement qui présente une configuration sphérique au niveau de sa surface circonférentielle et comporte une partie sphérique au niveau d'une face frontale opposée à l'arbre d'entraînement et, tout autour de la partie sphérique, une denture de rotor qui coopère par engrènement avec une denture de stator formée sur un stator de pompe. Le stator de pompe présente une surface circonférentielle qui correspond à la surface circonférentielle du rotor ainsi qu'une surface de palier de rotor coopérant avec la partie sphérique du rotor. Le rotor et le stator de pompe présentent ainsi des surfaces sphériques qui s'étendent radialement à l'intérieur et radialement à l'extérieur par rapport à un axe d'entraînement de l'arbre d'entraînement, et sont adjacentes à la denture correspondante. Les chambres de travail de l'organe de refoulement formées entre les dentures du rotor et du stator de pompe sont étanchéifiées par l'intermédiaire des surfaces sphériques localement en contact par intermittence et par l'intermédiaire des dentures elles-mêmes par rapport à d'autres chambres de travail. Puisque les surfaces sphériques du rotor et du stator de pompe peuvent être produites uniquement selon des tolérances de fabrication définies, il se produit une certaine fuite interne entre les chambres de travail pendant le fonctionnement de l'organe de refoulement. Dans l'organe de refoulement selon l'invention, cette fuite interne est réduite. Selon l'invention, au moins un contour étanche (20) périphérique saillant est formé sur le bord de la denture de rotor (5) sur la surface circonférentielle (3.1,6.1) du rotor (3) et/ou contre-rotor (6) et/ou sur le bord de la denture de stator (9) sur une surface de palier de rotor (10) du stator de pompe (8) coopérant avec la partie sphérique (4) du rotor (3).
PCT/EP2017/070870 2016-09-21 2017-08-17 Organe de refoulement présentant un contour étanche WO2018054622A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016218128.9 2016-09-21
DE102016218128.9A DE102016218128A1 (de) 2016-09-21 2016-09-21 Förderaggregat

Publications (1)

Publication Number Publication Date
WO2018054622A1 true WO2018054622A1 (fr) 2018-03-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/070870 WO2018054622A1 (fr) 2016-09-21 2017-08-17 Organe de refoulement présentant un contour étanche

Country Status (2)

Country Link
DE (1) DE102016218128A1 (fr)
WO (1) WO2018054622A1 (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
WO2022171512A1 (fr) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Dispositif de fluide sous pression actionné manuellement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013991A1 (de) 2007-03-13 2008-12-04 Cor Pumps + Compressors Ag Pumpe oder Motor
US20110311351A1 (en) * 2010-06-17 2011-12-22 Curtis Patterson Shroud for rotary engine
DE102011084828A1 (de) * 2011-10-19 2013-04-25 Robert Bosch Gmbh Förderaggregat
US20140271301A1 (en) * 2013-03-15 2014-09-18 Exponential Technologies, Inc. Dual Axis Rotor
US20150260184A1 (en) * 2014-03-17 2015-09-17 Exponential Technologies, Inc. Segmented Positive Displacement Rotor Housing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013991A1 (de) 2007-03-13 2008-12-04 Cor Pumps + Compressors Ag Pumpe oder Motor
US20110311351A1 (en) * 2010-06-17 2011-12-22 Curtis Patterson Shroud for rotary engine
DE102011084828A1 (de) * 2011-10-19 2013-04-25 Robert Bosch Gmbh Förderaggregat
US20140271301A1 (en) * 2013-03-15 2014-09-18 Exponential Technologies, Inc. Dual Axis Rotor
US20150260184A1 (en) * 2014-03-17 2015-09-17 Exponential Technologies, Inc. Segmented Positive Displacement Rotor Housing

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
WO2022171512A1 (fr) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Dispositif de fluide sous pression actionné manuellement
DE102021103306A1 (de) 2021-02-12 2022-08-18 Kolektor Group D.O.O. Handgeführtes Druckflüssigkeitsgerät

Also Published As

Publication number Publication date
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