EP3249156A1 - Machine, en particulier pompe de pression d'huile - Google Patents

Machine, en particulier pompe de pression d'huile Download PDF

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Publication number
EP3249156A1
EP3249156A1 EP17168324.6A EP17168324A EP3249156A1 EP 3249156 A1 EP3249156 A1 EP 3249156A1 EP 17168324 A EP17168324 A EP 17168324A EP 3249156 A1 EP3249156 A1 EP 3249156A1
Authority
EP
European Patent Office
Prior art keywords
inner rotor
recess
wing
rotor
machine according
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.)
Granted
Application number
EP17168324.6A
Other languages
German (de)
English (en)
Other versions
EP3249156B1 (fr
Inventor
Steffen SIES
Dieter Amesoeder
Marco ANSALONE
Riccardo Starace
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
VHIT SpA
Original Assignee
Robert Bosch GmbH
VHIT SpA
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, VHIT SpA filed Critical Robert Bosch GmbH
Publication of EP3249156A1 publication Critical patent/EP3249156A1/fr
Application granted granted Critical
Publication of EP3249156B1 publication Critical patent/EP3249156B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F04C2/32—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 both the movement defined in groups F04C2/02 and relative reciprocation between co-operating members
    • F04C2/332—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 both the movement defined in groups F04C2/02 and relative reciprocation between co-operating members with vanes hinged to the outer member and 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
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/18—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber
    • F04C14/22—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • 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
    • F04C2210/20—Fluid liquid, i.e. incompressible
    • F04C2210/206—Oil
    • 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

Definitions

  • the invention relates to a machine, in particular a pump for conveying a fluid, wherein the machine has a stator and an outer rotor rotatably mounted therein and an inner rotor arranged eccentrically with respect to the outer rotor via vanes, wherein at least one machine working space is formed between the outer rotor and the inner rotor is.
  • Such a trained as a variable-volume cell pump machine is from the DE 10 2009 004 456 B4 known.
  • This machine has a stator with an outer rotor arranged rotatably therein and an inner rotor arranged eccentrically with respect to the outer rotor via wings, wherein at least one machine working space is formed between the outer rotor and the inner rotor.
  • This machine has a spool, which is improved over the prior art. This is achieved by a specially trained bearing element.
  • Another machine is out of the EP 0 601 218 B1 known.
  • This machine also has a stator with an outer rotor arranged rotatably therein and an inner rotor arranged eccentrically with respect to the outer rotor via wings, wherein at least one machine working space is formed between the outer rotor and the inner rotor.
  • This machine is designed to ensure a long service life at high speed and high performance with high mechanical and thermal load in a simple and lightweight construction. This is achieved according to the information in this document, characterized in that at least one bore is provided in the inner rotor from which to all Sliding surfaces of the interacting with the inner rotor components radial bores.
  • the outer rotor is supported on its lateral surface via preferably a plurality of bearings.
  • the invention has for its object to provide a machine that is improved over the prior art.
  • the inner rotor has at least one inner rotor recess, in the guide surfaces for a wing bearing bearing segments are rotatably inserted, and that the inner rotor in the region of the inner rotor recess at least one protruding from the mecanicrotorausEnglishung and a bearing segment has a bearing segment portion comprehensive retaining lug.
  • an improved power transmission is achieved within the Maschinenmechanismusses and ensures lower stress on the components. Consequently, possible wear is further reduced or even eliminated.
  • the inner rotor recess has at least one abutment surface adjoining the inner rotor outer circumference, wherein the retaining lug is arranged in a stop surface section.
  • the retaining lug is arranged centrally on the stop surface. This embodiment is particularly advantageous because of a centrally acting on the corresponding bearing segment holding force and has proven to be easy to implement. But it is also possible to arrange one or more retaining lugs at any axial positions of the stop surface.
  • the holder nose is arranged on opposite stop surfaces. As a result, the guidance of the bearing segment in the inner rotor recess is further improved.
  • the retaining lug has a length which corresponds to one fifth to one third, preferably one quarter of the length of the stop surface. Such a length has proven to be sufficient for the desired improvement of the guidance or wrapping of the bearing segment in the inner rotor recess and the associated further advantages.
  • the bearing segment on a cooperating with at least one stop surface bearing segment stop surface which is designed as a Lagersegmenthals.
  • This embodiment has proved to be sufficiently effective for limiting the possible rotation of the inner rotor relative to the outer rotor.
  • the depth of the retaining lug is smaller or at most equal to the depth of the stop edge or the Lagersegmenthalses. This ensures that the retaining lug does not represent an independent stop for the bearing segment neck.
  • each of the wings has a central recess facing the inner rotor, which corresponds to a dome of the inner rotor.
  • the wing is plate-shaped.
  • the thus formed wing is provided on a longitudinal side with a wing bearing device explained below and on the opposite longitudinal side, the plate-shaped wing on the recess, which can be easily embedded in the wing thus formed.
  • the recess and the dome are each arc-shaped.
  • Lateral arms of the wing to the recess enclosed thereby improve the guidance of the wing in the inner rotor or a cooperating guide member preferably in the form of bearing segments, while the recess makes it possible to provide the inner rotor in this area with a material accumulating dome, which Improved durability of the inner rotor.
  • the space formed between the recess and the dome is used as a delivery chamber in that the wing acts as a kind of piston when immersed in the inner rotor. As a result, the size of the machine can be further reduced.
  • the recess and the dome may also be configured rectangular.
  • each wing has an integrally formed with the wing and cooperating with the outer rotor wing bearing device, wherein the wing bearing device is designed as a cylinder pin which extends along a wing and wherein the cylinder pin is inserted into a cylinder recess in the outer rotor.
  • the wing bearing device is designed as a cylinder pin which extends along a wing and wherein the cylinder pin is inserted into a cylinder recess in the outer rotor.
  • the material of the machine or the material of at least one component of the machine is a plastic material, in particular duroplastic.
  • the axial gaps to a housing comprising the machine can be designed so that at low temperatures rather large gaps are present, whereby a reduction of a viscous friction is achieved, while at high temperatures small gaps are present, whereby a reduction of axial leakage and thus an increase in the efficiency of the machine is shown.
  • the machine is preferably provided as a pump for conveying a medium, very preferably the pump is an oil pump for conveying oil, which is conveyed for example in an internal combustion engine for lubricating and cooling the components of the internal combustion engine or their attachments.
  • oil pump 1 machine or pump is designed to promote the lubricating oil, in particular an internal combustion engine with which a controllable amount of oil can be conveyed.
  • the oil feed pump 1 is designed as a cost-effective rotary vane pump, which is designed by various modifications to the prior art more reliable, efficient and compact than a conventional oil feed pump, whereby the oil feed pump 1 is improved overall over the prior art.
  • the oil feed pump 1 is in FIG. 1 in a side plan view and in FIG. 2 shown with a partially illustrated housing 2, in which the components of the oil feed pump 1 are used, and wherein the housing 2 is closed by a housing cover 3.
  • the oil feed pump 1 has a stator 4, in which a cylindrical Statoraus strictlyung 5 is inserted.
  • an outer rotor 6 is rotatably arranged, which in turn has an outer rotor recess 7.
  • an inner rotor 8 is arranged eccentrically to the outer rotor 6 (adjacent to the outer rotor recess 7 in the lower embodiment in the exemplary embodiment).
  • a recess 9 is inserted, into which a shaft 10 (FIG. FIG. 1a ) is used.
  • the inner rotor 8 can be rotated in particular in the direction of rotation 11.
  • the eccentricity is changed by changing the position of the stator 4 (and thus the outer rotor 6).
  • the stator 4 is mounted either translationally and / or rotationally in the housing 2 and is adjusted mechanically or hydraulically via an adjusting device.
  • the eccentricity of the inner rotor 8 relative to the outer rotor 6 can be adjusted by moving the inner rotor 8 upwards (or downwards) with respect to the outer rotor 6. Due to the adjustable eccentricity, the capacity of the oil pump 1 is adjusted.
  • the inner rotor 8 is connected to the outer rotor 6 via a number of vanes 12, the vanes 12 being rotatable relative to the outer rotor 6 and the inner rotor 8 and also being displaceable relative to the inner rotor 8, and thus the outer rotor 6 also being driven in the stator recess when the inner rotor 8 is driven 5 is turned.
  • two adjacent wings 12 and the outer rotor 6 formed conveying cells 13 of a machine working space enlarged (left side of the oil feed pump 1) and reduced (right side of the oil supply pump 1) and accordingly conveyed oil from the lying on the left side of the oil feed pump 1 suction side to the lying on the right side of the oil feed pump 1 pressure side.
  • Each of the wings 12 is plate-shaped and has a arranged on a longitudinal side wing bearing device, which as a predominantly cylindrical pin 14 (see also Figure 4a and Figure 4b ) is formed and is integrally formed with the plate-shaped wing 12.
  • Each wing 12 is inserted with the bolt 14 in a predominantly cylindrical pin recess 15 in the outer rotor 6 by lateral insertion.
  • the number of wings 12 can be varied compared to the illustrated five wings 12.
  • During the inner rotor 8 12 iensrotorausEnglishlessness 26 are embedded according to the number of wings, each having a mecanicrotorzylinderausEnglishung 16, in the direction of the recess 9 each have a pivot space 17 and opposite to the pivot space 17 adjoining the mecanicrotorzylinderausEnglishung 16 stop surface 23. This will be discussed below.
  • each bearing segment 18a, 18b are rotatably inserted into the inner rotor cylinder recesses 16 on opposite sides of the inner rotor 8 for each wing 12, each bearing segment 18a, 18b having a guide surface 19a, 19b.
  • each wing 12 cooperates in the region of the opposite ends adjacent to the housing 2 and the housing cover 3 and is displaceable in relation to the guide surfaces 19a, 19b (can be pushed in and out).
  • 12 arms 20a, 20b are formed in the region of the opposite ends of the respective wing, between which a Bogenaus Principleung 21a ( FIG. 2 ) or a rectangular recess, not shown, is arranged.
  • the arcuate recess 21a represents in the area between the arms 20a, 20b, which cooperate with the bearing segments 18, material reductions on the respective wing 12 which are associated with a material increase in the form of a dome 22 (FIG. FIG. 2 ) correspond to the inner rotor 8. Is shown in FIG. 2 an arcuate dome 22, but the dome 22 may also be rectangular in shape analogous to the rectangular recess 12 of the corresponding wing.
  • the arms 20a, 20b ensure reliable guidance of the respective wing 12 along the guide surfaces 19a, 19b of the bearing segments 18a, 18b, while through the intermediate one Recess 21 a gain of the inner rotor 8 is achieved by the top 22. As a result, the reliability and durability of the thus formed feed pump 1 is increased.
  • a driving mechanism is necessary, which is formed in the embodiment by a locking device for the movement of a degree of freedom of a wing 12.
  • This locking device is on the right side of the FIG. 1 and the detail view of the FIG. 4a realized by abutment of a stop edge 24 of the bearing segment 18a on a stop surface 23 of the inner rotor 8.
  • the stop edge 24 is thus formed as a kind of bearing segment neck.
  • the stop surface 23 extends from the réellerotorzylindrungsEnglishung 16 to an inner rotor outer periphery.
  • the abutment edge 24 is also present on the bearing segment 18b and also a cooperating (for example in an opposite direction of rotation effective) abutment surface 23.
  • the abutment surface 23 of the inner rotor 8 is on both sides by a preferably centrally disposed retaining lug 25 (see also FIGS. 5 and 6 ) interrupted.
  • the retaining lug 25 projects out of the inner rotor recess 26 or more precisely out of the abutment surface 23 via a stop surface section and encloses both bearing segments 18a, 18b in a respective bearing segment section corresponding to the length of the retaining lug over a larger angular range.
  • the retaining lug 25 has a length which corresponds to one fifth to one third, preferably one quarter of the length of the stop surface 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
EP17168324.6A 2016-05-24 2017-04-27 Machine, en particulier pompe de pression d'huile Active EP3249156B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016209021.6A DE102016209021A1 (de) 2016-05-24 2016-05-24 Maschine, insbesondere Ölförderpumpe

Publications (2)

Publication Number Publication Date
EP3249156A1 true EP3249156A1 (fr) 2017-11-29
EP3249156B1 EP3249156B1 (fr) 2019-02-20

Family

ID=58640705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17168324.6A Active EP3249156B1 (fr) 2016-05-24 2017-04-27 Machine, en particulier pompe de pression d'huile

Country Status (2)

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EP (1) EP3249156B1 (fr)
DE (1) DE102016209021A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019170218A1 (fr) * 2018-03-05 2019-09-12 Pierburg Pump Technology Gmbh Pompe à lubrifiant à cylindrée variable
WO2019170217A1 (fr) * 2018-03-05 2019-09-12 Pierburg Pump Technology Gmbh Pompe de lubrification à palettes de pendule variables

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029554A (en) * 1932-08-24 1936-02-04 Berggren Charles William Pump and compressor
EP0601218A1 (fr) * 1992-11-27 1994-06-15 Andro Caric Machine à piston rotatif
EP1138876A1 (fr) * 2000-03-31 2001-10-04 OTICE Establishment Moteur à combustion interne
DE102009004456B4 (de) 2009-01-13 2012-01-19 Mahle International Gmbh Mengenregelbare Zellenpumpe mit schwenkbarem Steuerschieber

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2029554A (en) * 1932-08-24 1936-02-04 Berggren Charles William Pump and compressor
EP0601218A1 (fr) * 1992-11-27 1994-06-15 Andro Caric Machine à piston rotatif
EP0601218B1 (fr) 1992-11-27 1997-01-22 Andro Caric Machine à piston rotatif
EP1138876A1 (fr) * 2000-03-31 2001-10-04 OTICE Establishment Moteur à combustion interne
DE102009004456B4 (de) 2009-01-13 2012-01-19 Mahle International Gmbh Mengenregelbare Zellenpumpe mit schwenkbarem Steuerschieber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019170218A1 (fr) * 2018-03-05 2019-09-12 Pierburg Pump Technology Gmbh Pompe à lubrifiant à cylindrée variable
WO2019170217A1 (fr) * 2018-03-05 2019-09-12 Pierburg Pump Technology Gmbh Pompe de lubrification à palettes de pendule variables

Also Published As

Publication number Publication date
DE102016209021A1 (de) 2017-11-30
EP3249156B1 (fr) 2019-02-20

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