EP2326843B1 - Vorrichtung zu abzweigen eines fluidischen teilstroms - Google Patents

Vorrichtung zu abzweigen eines fluidischen teilstroms Download PDF

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Publication number
EP2326843B1
EP2326843B1 EP09778697.4A EP09778697A EP2326843B1 EP 2326843 B1 EP2326843 B1 EP 2326843B1 EP 09778697 A EP09778697 A EP 09778697A EP 2326843 B1 EP2326843 B1 EP 2326843B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic pump
chambers
fluid
main flow
partial flow
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.)
Active
Application number
EP09778697.4A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2326843A2 (de
Inventor
Andreas Schunk
Frank Hiery
Helmut Mertens
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.)
Hydac Filtertechnik GmbH
Original Assignee
Hydac Filtertechnik 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 Hydac Filtertechnik GmbH filed Critical Hydac Filtertechnik GmbH
Publication of EP2326843A2 publication Critical patent/EP2326843A2/de
Application granted granted Critical
Publication of EP2326843B1 publication Critical patent/EP2326843B1/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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • 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
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • 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
    • F04C18/3441—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 one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—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 one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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
    • 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
    • F04C2/3441—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 one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3442—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 one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the working space, being surfaces of revolution

Definitions

  • the invention relates to a hydraulic pump for branching off a fluid partial flow from a main flow with the features in the preamble of claim 1.
  • Hydraulic pumps (see e.g. DE 21 14 202 C3 ) are known in the prior art in a large number of embodiments. As a rule, hydraulic pumps are used to convert mechanical energy in the form of torque and speed into hydraulic energy with a specifiable volume flow and fluid pressure. Hydraulic pumps that work according to the so-called displacement principle have individual chambers sealed in the pump housing, in which chambers fluid is transported from the inlet side of the pump, formed by a suction connection, to the outlet side in the form of the pressure connection. Since there is no direct connection between the suction connection and the pressure connection, pumps based on the displacement principle are particularly suitable for high fluid system pressures.
  • the U.S. 2,736,267 describes a generic hydraulic pump for branching off a fluidic partial flow from a main flow, which, working according to the displacement principle, has individual, sealed main chambers, divided into functional groups, by means of which fluid coming from at least one main flow inlet from an inlet or suction side to an outlet or pressure side of the hydraulic pump and can also be transported via at least one main flow outlet, with at least one independent sub-chamber being provided next to the main chambers for the transport of the partial flow, which is part of the pressure side of the hydraulic pump and is connected to an independent partial flow outlet that is separate from the respective main flow inlet and respective main flow outlet, and wherein the hydraulic pump is a vane pump.
  • a bypass filter unit is from the WO 96/30104 A1 known.
  • a hydraulic pump is used in the U.S. 3,241,747 disclosed.
  • the invention is therefore based on the object of further improving the known solutions in such a way that the field of application of pertinent hydraulic pumps is expanded in a cost-effective manner.
  • a corresponding object is achieved by a hydraulic pump with the entirety of the features of claim 1.
  • the individual vanes of the vane pump are longitudinally displaceable in a drivable rotor between an end position in the rotor and a die
  • the displaceability of the vanes outwardly delimiting the circumferential wall of a stator are guided in such a way that two opposing fluid spaces are formed between them and the rotor and the stator for at least some of the vanes; that at least two chambers are arranged in a chamber block of the device on the suction and the pressure side of the hydraulic pump; and that some of the chambers can be assigned to one fluid space and the other part of the chambers can be assigned to the other fluid space of each wing. Due to the opposing fluid spaces, depending on their volumetric design, different pressure levels can be achieved by means of a device for different applications, which in this respect also leads to further options for adapting the main flow to the requirements of the hydraulic circuit.
  • the device according to the invention enables a fluidic partial flow to be branched off from the main flow mentioned, with at least one independent partial chamber being provided for the transport of the partial flow next to the main chambers for the main flow conveying, which is part of the pressure side of the hydraulic pump and is connected to an independent partial flow outlet which is connected to the respective Main flow inlet and the respective main flow outlet is separated.
  • the branched off partial flow from the main flow makes it possible to use the partial flow for a wide variety of tasks, with both the fluid volume of the partial flow and its fluid pressure being specifiable depending on the design of the device.
  • the relevant fluidic partial flow can therefore be used independently of the main flow for supplying individual fluidic consumers.
  • An emergency supply of hydraulic components in the area of roll stabilization or of steering support systems in the event of failure is also easily possible via the partial flow.
  • the partial flow that is branched off from the main flow can be subjected to a sensor check, For example, it can be analyzed for its degree of pollution in order to obtain qualitative statements about the main flow. A large number of applications in a wide variety of technical fields are possible here.
  • the device according to the invention for partial flow formation with an arbitrarily predeterminable volume fraction is preferably designed in the form of a modular component, depending on the design of the device, which can be combined with other components, such as drive units and / or filter units, to form overall fluidic devices; Can be used as a single module but also in complete systems such as roll stabilization, steering assistance, etc., where separate partial volume flows are required for various control tasks, but also for emergency functions.
  • the ones in the Figs. 1 to 3 The device shown serves to branch off a fluidic partial flow from a main flow by means of a hydraulic pump 10, which has individual chambers 12, 14, 16, 18 and 20 that work according to the displacement principle and which are sealed from one another, by means of their fluid from the inlet or suction side to the outlet or pressure side the hydraulic pump 10 can be transported.
  • a hydraulic pump 10 which has individual chambers 12, 14, 16, 18 and 20 that work according to the displacement principle and which are sealed from one another, by means of their fluid from the inlet or suction side to the outlet or pressure side the hydraulic pump 10 can be transported.
  • An independent sub-chamber 26 is provided for the branched-off partial flow, which is part of the pressure side of the hydraulic pump 10 together with the third chamber 16, the fourth chamber 18 and the fifth chamber 20, whereas the first chamber 12 and the second chamber 14 are assigned to the suction side .
  • a vane pump is used as the hydraulic pump 10, the direction of rotation of which is in the Fig. 3 is shown with an arrow 28.
  • the individual vanes 30 of the vane pump are guided in a drivable rotor 32 longitudinally displaceable between an end position in the rotor 32 and a surrounding wall 34 of a stator 36 that limits the displaceability of the vanes 30 towards the outside in such a way that two opposing fluid spaces 38, 40 each for the vanes 30 are formed between these and the rotor 32 and the stator 36.
  • the partial chamber 26, which is spatially separated from the other named chambers and has a separate partial flow outlet 42, serves to form the fluidic partial flow.
  • the partial flow volume that the respective wing 30 pushes out of the device in the displacement direction onto the second fluid space 40 is discharged via the said partial flow outlet 42. Since the vanes 30 traverse the partial chamber 26 in direct succession, fluid on the pressure side of the device is permanently transported to the outside via the partial flow outlet 42.
  • the partial flow is brought to the suction side of the device after supplying a hydraulic consumer, to implement an emergency function or after passing through a sensor unit (not shown) and is fed back to the device via the partial flow inlet 44.
  • the stator 36 is made of a cylindrical Hollow ring is formed which can be received in a housing 46 of the device.
  • the rotor 32 with its individual vanes 30 is accommodated eccentrically with its drive axis in the stator 36 for the purpose of realizing the vane pump principle already described.
  • the indicated chambers 12, 14, 16, 18, 20 and 26 in turn are part of an independent chamber block 48, the fourth chamber 18 in FIG Fig. 2 is not shown.
  • the chamber block 48 closes on the outside flush with the device housing 46 (cf. Fig. 1 ) and is correspondingly sealed to the inside in the direction of the stator 36 via a sealing ring 50.
  • a further sealing ring 52 can be present on the opposite side of the chamber block 48 for a seal to adjoining device parts.
  • a drive shaft 54 is used to drive the vane pump, which is sealed to the outside by a chambered sealing ring 56, as well as a separate sealing ring 58 opposite a drive shaft 60 of an electric motor 62 (cf. Fig. 4 ).
  • a chambered sealing ring 56 is sealed to the outside by a chambered sealing ring 56, as well as a separate sealing ring 58 opposite a drive shaft 60 of an electric motor 62 (cf. Fig. 4 ).
  • the chambers 12, 14, 16, 18 and 20 of the suction 22 and pressure side 24 open within the chamber block 48 to its two opposite end faces 64, 66 into the surroundings, except for the sub-chamber 26 for the partial flow formation, which on its side facing away from the hydraulic pump 10 to the outside through wall parts 68 of the chamber block 48 ( Fig. 1 ) is completed.
  • the individual chambers 12, 14, 16, 18 and 20 and 26 are arranged in a concentric arrangement to the drive axis (drive shaft 60) of the hydraulic pump and are otherwise sickle-shaped.
  • the Fig. 4 shown an embodiment for the application of the device described.
  • the device is according to the Figs. 1 to 3 placed on a filter unit designated as a whole as 70, which is of conventional design.
  • the filter unit 70 has an exchangeable filter element 72 in a filter housing 74, the filter mat 76 of the filter element 72 being supported on the inner circumference by a conventional support tube 78 with inner walls 80 arranged in a star shape.
  • the filter device 70 has a fluid inlet 82 and a fluid outlet 84 on its upper side, which guide the main flow.
  • the filter device 70 has a bypass device designated as a whole by 86, which directly releases the fluid path between the device according to the invention and the fluid outlet 84 if the filter element 72 is blocked due to contamination.
  • the electric motor 62 is provided opposite the filter device 70 and seated from above on the device according to the invention, the electric winding having been omitted for the sake of simpler representation.
  • the electric motor 62 drives the drive shaft 60, which in the direction of view of the Fig. 4 seen engages with its lower end in the rotor 32 of the vane pump in order to ensure its drive. If the vane pump is in operation as a hydraulic pump 10, it sucks in fluid via its suction side and therefore via a main flow inlet 22 via the fluid inlet 82 and on the pressure side and therefore via the main flow outlet 24, the relevant amount of fluid in the main flow is transferred via a passage point 88 (cf. Fig.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
EP09778697.4A 2008-09-27 2009-09-24 Vorrichtung zu abzweigen eines fluidischen teilstroms Active EP2326843B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008049217A DE102008049217A1 (de) 2008-09-27 2008-09-27 Vorrichtung zum Abzweigen eines fluidischen Teilstroms
PCT/EP2009/006900 WO2010034491A2 (de) 2008-09-27 2009-09-24 Vorrichtung zu abzweigen eines fluidischen teilstroms

Publications (2)

Publication Number Publication Date
EP2326843A2 EP2326843A2 (de) 2011-06-01
EP2326843B1 true EP2326843B1 (de) 2021-01-13

Family

ID=41794912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09778697.4A Active EP2326843B1 (de) 2008-09-27 2009-09-24 Vorrichtung zu abzweigen eines fluidischen teilstroms

Country Status (7)

Country Link
US (1) US9243633B2 (ja)
EP (1) EP2326843B1 (ja)
JP (1) JP5497767B2 (ja)
KR (1) KR101615511B1 (ja)
CN (1) CN102165195B (ja)
DE (1) DE102008049217A1 (ja)
WO (1) WO2010034491A2 (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015108925B8 (de) * 2015-06-05 2016-08-18 Nidec Gpm Gmbh Elektrisch angetriebene Flüssigkeits-Filterpumpe
DE102017217697A1 (de) 2017-10-05 2019-04-11 Robert Bosch Gmbh Hydraulikvorrichtung mit einer oder mehr als einer Pumpe und einem Filter
CN111706486B (zh) * 2020-05-25 2022-05-13 新沂市利源机械有限公司 一种高效、耐磨式吸沙泵及其工作方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030104A1 (de) * 1995-03-29 1996-10-03 Argo Gmbh Für Fluidtechnik Nebenstromfilteraggregat

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US2736267A (en) * 1956-02-28 mosbacher
US2639855A (en) * 1948-02-06 1953-05-26 William T Daniels Variable vacuum and pressure rotary pump
CH361718A (de) 1958-03-26 1962-04-30 American Brake Shoe Co Vorrichtung zur Umwandlung der Druckenergie eines Fluidums in mechanische Energie oder umgekehrt
US3128707A (en) 1960-03-11 1964-04-14 Robert W Brundage Multiple discharge hydraulic pump
US3228345A (en) * 1960-03-11 1966-01-11 Robert W Brundage Multiple discharge hydraulic pump
US3242867A (en) * 1964-03-11 1966-03-29 Roper Ind Inc Fluid pumping and separating apparatus
US3241747A (en) 1964-07-15 1966-03-22 George V O Haver Oil pump and oil system for air compressor
US3639089A (en) * 1970-03-26 1972-02-01 Borg Warner Pump
JPS6052394U (ja) * 1984-08-10 1985-04-12 日本ピストンリング株式会社 ベ−ン型圧縮機
JPH08226389A (ja) * 1995-02-20 1996-09-03 Jidosha Kiki Co Ltd ベーンポンプ
US6641372B2 (en) 2000-01-21 2003-11-04 Delphi Technologies, Inc. Dual discharge hydraulic pump and system therefor
EP1327077A1 (en) * 2000-01-21 2003-07-16 Delphi Technologies, Inc. Hydraulic vane pump
US7770388B2 (en) * 2004-11-19 2010-08-10 Goodrich Pump & Engine Control Systems, Inc. High efficiency 2-stage fuel pump and control scheme for gas turbines
JP2008286108A (ja) * 2007-05-17 2008-11-27 Jtekt Corp 車両用オイルポンプシステム

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996030104A1 (de) * 1995-03-29 1996-10-03 Argo Gmbh Für Fluidtechnik Nebenstromfilteraggregat

Also Published As

Publication number Publication date
EP2326843A2 (de) 2011-06-01
US9243633B2 (en) 2016-01-26
WO2010034491A3 (de) 2010-12-02
JP2012503736A (ja) 2012-02-09
US20110165008A1 (en) 2011-07-07
KR101615511B1 (ko) 2016-05-12
WO2010034491A2 (de) 2010-04-01
CN102165195A (zh) 2011-08-24
DE102008049217A1 (de) 2010-04-08
CN102165195B (zh) 2015-09-30
JP5497767B2 (ja) 2014-05-21
KR20110056559A (ko) 2011-05-30

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