EP2868926A1 - Pendelpumpe, insbesondere zum Zuführen von Drucköl zu einer endgültigen Vorrichtung - Google Patents

Pendelpumpe, insbesondere zum Zuführen von Drucköl zu einer endgültigen Vorrichtung Download PDF

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Publication number
EP2868926A1
EP2868926A1 EP20140191963 EP14191963A EP2868926A1 EP 2868926 A1 EP2868926 A1 EP 2868926A1 EP 20140191963 EP20140191963 EP 20140191963 EP 14191963 A EP14191963 A EP 14191963A EP 2868926 A1 EP2868926 A1 EP 2868926A1
Authority
EP
European Patent Office
Prior art keywords
pendulum
pump according
recess
dragging
rotor
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
EP20140191963
Other languages
English (en)
French (fr)
Other versions
EP2868926B1 (de
Inventor
Bruno Bertagna
Davide Gambetti
Carlo Pacchetti
Roberto Zambardi
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.)
ZF Automotive Italia SRL
Original Assignee
TRW Automotive Italia SRL
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 TRW Automotive Italia SRL filed Critical TRW Automotive Italia SRL
Publication of EP2868926A1 publication Critical patent/EP2868926A1/de
Application granted granted Critical
Publication of EP2868926B1 publication Critical patent/EP2868926B1/de
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
    • 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
    • F04C2/348—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 vanes positively engaging, with circumferential play, an outer rotatable member
    • 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
    • F04C14/223—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 using a movable cam
    • F04C14/226—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 using a movable cam by pivoting the cam around an eccentric axis
    • 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 present invention relates to a pendulum pump, in particular to feed oil under pressure to a final device.
  • a pendulum pump of the type comprising an outer rotor mounted to rotate around a first rotation axis; an inner rotor mounted inside the outer rotor to rotate around a second rotation axis which is parallel to the first rotation axis; and a plurality of dragging pendulums interposed between the outer rotor and the inner rotor.
  • the dragging pendulums are generally rotationally coupled to the outer rotor and slidingly engage respective guide recesses obtained on the inner rotor.
  • Each guide recess is separated from each adjacent guide recess by means of a respective partition wall radially extending outward with respect to the rotation axis of the inner rotor.
  • the inner rotor is keyed onto a motorized drive shaft, which sets the inner rotor in rotation to allow the dragging pendulums to rotate the outer rotor.
  • Each dragging pendulum defines a first variable-volume chamber together with the inner rotor, the outer rotor, and each adjacent dragging pendulum, and further defines a second variable-volume chamber together with the corresponding guide recess.
  • the chambers are axially limited by two lateral sides which are parallel to each other, each of which extends perpendicular to the rotation axes of the two rotors, and has two cavities, which extend around the second rotation axis according to respective angles smaller than 180°, face towards the chambers, and are hydraulically separated from each other in a fluid-tight manner.
  • a first cavity of each lateral side is hydraulically connected to a corresponding first cavity of the other lateral side and to an oil intake in the pendulum pump, while the second cavity of each lateral side is hydraulically connected to a corresponding second cavity of the other lateral side and to an oil delivery for the mentioned final device.
  • the two first cavities are configured so as to hydraulically connect a part of the mentioned first and second chambers together and to the intake, during the rotation of the rotors around the respective rotation axes, while the two second cavities are configured so as to hydraulically connect the remaining first and second chambers together and to the delivery, during the rotation of the rotors around the respective rotation axes.
  • each chamber has a volume varying between a maximum volume at the first cavities and thus at the intake, and a minimum volume at the second cavities and thus at the delivery.
  • a pendulum pump in particular to feed oil under pressure to a final device, is provided as claimed in the appended claims.
  • numeral 1 indicates, as a whole, a pendulum pump adapted to take oil from a storage tank (not shown) and to feed oil under pressure to a final device (not shown), for example an internal combustion engine.
  • the pendulum pump 1 comprises a pump body 2, which is cup-shaped, is limited by a substantially flat end face 3, and defines a cavity 4, which opens outward at face 3, and is limited by a bottom wall 5 which is substantially parallel to the face 3 itself.
  • Cavity 4 is closed by a plate 6 which is limited by a substantially flat face 7 arranged in contact with face 3.
  • the pendulum pump 1 further comprises an inner rotor 8, which is accommodated inside cavity 4, and is keyed onto a drive shaft 9 rotationally engaged through the pump body 2 and plate 6 to rotate around its own longitudinal axis 10 which is substantially perpendicular to the faces 3 and 7.
  • the pendulum pump 1 further has an outer rotor 11 mounted so as to be eccentric with respect to the inner rotor 8 so as to rotate around its own longitudinal axis 12 which is parallel to, and separate from, the mentioned axis 10.
  • Each pendulum 13 has a first free end rotationally fitted to the outer rotor 11 to oscillate around a fulcrum axis 14 parallel to axis 12, and also has a second free end rotationally coupled in an axially sliding manner to a guide recess 15 obtained in the inner rotor 8.
  • Each recess 15 is laterally limited by two flat sides 15a which are parallel to each other, and is separated from each adjacent recess 15 by means of an intermediate wall 15b.
  • the two sides 15a are parallel to the axes 10, 12 and are connected to each other by a bottom wall 15c of recess 15.
  • wall 15c is flat and perpendicular to the sides 15a themselves.
  • the recesses 15 are distributed around axis 10 and have respective symmetry planes P, which extend parallel to axis 10, and are tangent to a circumference C which is concentric with respect to axis 10 and common to all the planes P.
  • Each plane P is parallel to the sides 15a and perpendicular to the wall 15c of the corresponding recess 15.
  • each recess 15 The distance between the sides 15a of each recess 15 and the dimensions of the corresponding pendulum 13 are such that pendulum 13 is always in contact with both the sides 15a and therefore is coupled to the recess 15 itself in a substantially fluid-tight manner.
  • Each pendulum 13 thus defines a first variable-volume chamber 16 together with the inner rotor 8, the outer rotor 11, and each adjacent pendulum 13, and defines a second variable-volume chamber 17 together with the corresponding recess 15.
  • each pendulum 13 and the corresponding recess 15 allows the pumping effect of the corresponding chamber 17 to be utilized, ensures a uniform dragging of the outer rotor 11, and allows noises, vibrations and impacts to be avoided.
  • the chambers 16, 17 are axially limited by the bottom wall 5 of the pump body 2 and by the face 7 of plate 6.
  • Wall 5 and face 7 each have two respective cavities 18, 19, which extend around axis 10 according to respective angles smaller than 180°, face towards the chambers 16, 17, and are hydraulically separated from each other in a fluid-tight manner.
  • the two cavities 18 of wall 5 and of face 7, respectively, are hydraulically connected to each other by means of the chambers 16, 17, and are also hydraulically connected to a duct 20 for taking the oil in the pendulum pump 1.
  • the two cavities 19 of wall 5 and of face 7, respectively, are hydraulically connected to each other by means of the chambers 16, 17, and are also hydraulically connected to a duct 21 for delivering the oil to the mentioned final device.
  • the two cavities 18 are configured so as to hydraulically connect a part of the chambers 16, 17 together and to duct 20, when the inner rotor 8 and the outer rotor 11 rotate around the respective axes 10, 12, while the two cavities 19 are configured so as to hydraulically connect the remaining chambers 16, 17 together and to duct 21, when the inner rotor 8 and the outer rotor 11 rotate around the respective axes 10, 12.
  • each chamber 16, 17 has a volume varying between a maximum volume at the first cavities 18 and thus at duct 20, and a minimum volume at the cavities 19 and thus at duct 21.
  • the maximum volume of the chambers 16, 17 and thus the displacement of the pendulum pump 1 depend on the eccentricity between the axes 10, 12, and that the eccentricity between the axes 10, 12 is selectively controlled by means of an adjusting device 22.
  • Device 22 comprises a crank 23, which is substantially cylindrical in shape, is mounted inside cavity 4 and is rotationally engaged by the outer rotor 11.
  • Crank 23 is hinged to the pump body 2 to oscillate, with respect to the pump body 2 and under the thrust of a known actuating device (not shown), around a fulcrum axis 24 which is parallel to the axes 10 and 12.
  • the pendulums 13 are rotationally fitted to the inner rotor 8, the recesses 15 are obtained in the outer rotor 11, and the planes P are tangent to a circumference C which is concentric with respect to axis 12.
  • the pendulum pump 1 allows:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Reciprocating Pumps (AREA)
  • Control Of Transmission Device (AREA)
EP14191963.9A 2013-11-05 2014-11-05 Pendelpumpe, insbesondere zum Zuführen von Drucköl zu einer endgültigen Vorrichtung Active EP2868926B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000603A ITBO20130603A1 (it) 2013-11-05 2013-11-05 Pompa a pendoli, in particolare per alimentare olio in pressione ad una utenza

Publications (2)

Publication Number Publication Date
EP2868926A1 true EP2868926A1 (de) 2015-05-06
EP2868926B1 EP2868926B1 (de) 2016-09-07

Family

ID=49639956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14191963.9A Active EP2868926B1 (de) 2013-11-05 2014-11-05 Pendelpumpe, insbesondere zum Zuführen von Drucköl zu einer endgültigen Vorrichtung

Country Status (2)

Country Link
EP (1) EP2868926B1 (de)
IT (1) ITBO20130603A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018096268A (ja) * 2016-12-13 2018-06-21 株式会社マーレ フィルターシステムズ ポンプ

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532703C1 (de) * 1995-09-05 1996-11-21 Guenther Beez Pendelschiebermaschine
DE102006058979A1 (de) * 2006-12-14 2008-06-19 Hella Kgaa Hueck & Co. Flügelzellenpumpe
WO2009014661A1 (en) * 2007-07-20 2009-01-29 Borgwarner Inc. Articulated vane pump having multiple vanes to drive an outer rotor and provide an increased contact ratio

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB266514A (en) * 1926-01-27 1927-03-03 James Robertson Improvements relating to rotary pumps and blowers
DE102009006453A1 (de) * 2009-01-28 2010-07-29 Bayerische Motoren Werke Aktiengesellschaft Fluidpumpe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19532703C1 (de) * 1995-09-05 1996-11-21 Guenther Beez Pendelschiebermaschine
DE102006058979A1 (de) * 2006-12-14 2008-06-19 Hella Kgaa Hueck & Co. Flügelzellenpumpe
WO2009014661A1 (en) * 2007-07-20 2009-01-29 Borgwarner Inc. Articulated vane pump having multiple vanes to drive an outer rotor and provide an increased contact ratio

Also Published As

Publication number Publication date
EP2868926B1 (de) 2016-09-07
ITBO20130603A1 (it) 2015-05-06

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