EP1106827A2 - Ensemble de pompage hydraulique - Google Patents

Ensemble de pompage hydraulique Download PDF

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Publication number
EP1106827A2
EP1106827A2 EP00890354A EP00890354A EP1106827A2 EP 1106827 A2 EP1106827 A2 EP 1106827A2 EP 00890354 A EP00890354 A EP 00890354A EP 00890354 A EP00890354 A EP 00890354A EP 1106827 A2 EP1106827 A2 EP 1106827A2
Authority
EP
European Patent Office
Prior art keywords
pump
common
drive shaft
backing
inlet
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
EP00890354A
Other languages
German (de)
English (en)
Other versions
EP1106827A3 (fr
EP1106827B1 (fr
Inventor
Klaus Dipl.-Ing. Stolle
Gernot Techet
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.)
Hoerbiger Automatisierungstechnik Holding GmbH
Original Assignee
Hoerbiger Hydraulik 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 Hoerbiger Hydraulik GmbH filed Critical Hoerbiger Hydraulik GmbH
Publication of EP1106827A2 publication Critical patent/EP1106827A2/fr
Publication of EP1106827A3 publication Critical patent/EP1106827A3/fr
Application granted granted Critical
Publication of EP1106827B1 publication Critical patent/EP1106827B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F04B23/025—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir
    • F04B23/026—Pumping installations or systems having reservoirs the pump being located directly adjacent the reservoir a pump-side forming a wall of the reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/10—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type
    • F04B23/103—Combinations of two or more pumps the pumps being of different types at least one pump being of the reciprocating positive-displacement type being a radial piston pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F04B23/08—Combinations of two or more pumps the pumps being of different types
    • F04B23/14—Combinations of two or more pumps the pumps being of different types at least one pump being of the non-positive-displacement type

Definitions

  • the invention relates to a hydraulic pump unit, with a radial piston pump, with several, essentially star-shaped in a pump housing around a common one Drive shaft arranged pump elements, each of which is from the medium to be pumped actuated inlet and outlet valve is assigned, whereby in the medium supply the inlet valves also a backing pump driven by the common drive shaft is switched on, the paddle wheel on the opposite end of the drive the drive shaft is rotatably arranged, and further the pressure side of the backing pump with a common inlet channel leading to all inlet valves in the pump housing communicates.
  • Hydraulic pump units with radial piston pumps of the simplest type such as for example in the case of small, electrically operated hydraulic units that are independent of the drive motor for operating vehicle hoods or the like for a long time Time application, without valve control, the one arranged in the middle common drive eccentric shaft driven pump elements operated, what keeps the design effort very low, but only allows low efficiency. Because of the presence or absence of the respective individual pump elements In addition, unfavorable pressure conditions arise in such units of pressure pulses noise throughout the connected hydraulics that are bothersome and are undesirable.
  • FR 1 537 827 A is a hydraulic pump unit of the type mentioned kind known, which avoids the disadvantages mentioned in that in the medium supply to the inlet valves also driven by the common drive shaft
  • the backing pump is switched on. This backing pump ensures that always positive pressure is present on the suction side of the inlet valves, which causes the difficulties mentioned are overcome.
  • the backing pump is for the provision of the mentioned pressure conditions largely uncritical, since they only have a relatively small increase in pressure on the inlet side Pump elements must accomplish; the disadvantage of this known arrangement is, however, that the constructive design of the overall arrangement according to the inflow and outflow conditions on the backing pump as well as following the assembly of the radial piston pump elements in the housing cannot be optimized with regard to the smallest possible design, so that the use of such arrangements is often limited Space is prevented.
  • the object of the present invention is to overcome the disadvantages of the known To avoid arrangement of the type mentioned and such an arrangement improve that they also in tight spaces, for example at the beginning addressed applications in vehicles, can be used.
  • the backing pump according to Art a centrifugal pump and in common with the radial piston pump Pump housing is integrated, and that the suction side of the backing pump directly on the the pump housing, the medium tank is sealed off from the drive motor facing and connected to it directly or via a short suction line.
  • the inflow and outflow conditions on the centrifugal pump together with that on the pump housing opposite the drive motor sealed medium tank and the directly connected one Suction line allow a very advantageous arrangement. It can also be used for this the inlet and inflow resistances to the suction side of the backing pump are minimized the overall efficiency of the arrangement is increased.
  • the pressure side of the backing pump is with one to all inlet valves of the radial piston pump leading common inlet channel in the pump housing in connection, with which the Inflow from the backing pump to the inlet side of the individual pump elements is simplified and is improved with regard to the problem described.
  • FIG. 1 shows one Longitudinal section through such a pump unit and Fig. 2 shows a section along the line II-II in Fig. 1.
  • the hydraulic pump unit shown consists essentially of a Pump housing 1, one flanged to it sealed on the right side in the illustration Drive motor 2 and one sealed on the left in the illustration mounted medium tank 3, which up to an indicated level 4 with hydraulic medium is filled.
  • the connecting lines to this pump unit are not visible here units or devices supplied with pressure medium, such as hydraulic Working cylinders or the like, fastening elements of the pump unit, electrical lines for feeding the drive motor 2 and the like.
  • a radial piston pump 5 is installed in the pump unit, with several, in Pump housing 1 arranged essentially in a star shape around a common drive shaft 6 Pump elements 7, of which only one according to the cut in Fig. 1 is seen.
  • Pump elements 7 here, for example, each assign one from pumping medium automatically operated inlet and outlet valve, which according to Art a spring-loaded check valve.
  • Fig. 1 is only that on the drive shaft 6 to see the distal outer end of the pump element 7 built-in inlet valve 8; the associated exhaust valve can, for example, also at the outer end of the Pump element 7 may be arranged laterally perpendicular to its axis.
  • This cover 13 has a short suction line 14 inserted in the center into the Hydraulic medium in the medium tank 3 - alternatively, could be used instead of the suction line 14 but also a suction hole in the cover 13, as shown in FIG. 1 is drawn in dashed lines and designated 15.
  • the suction side of the backing pump 11 thus has no significant hydraulic Resistors connected to the medium tank or the hydraulic medium contained therein is its pressure side via the supply bore 10 and the annular inlet channel 9 relatively directly connected to the inlet valves 8 of the pump elements 7, which is a total even if the backing pump version is not particularly high in terms of efficiency 11 always gives a positive pressure at the inlet valves 8 of the radial piston pump 5, which functions reliably even at low ambient temperatures Pump unit guaranteed with the lowest operating noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)
EP00890354A 1999-12-07 2000-11-29 Ensemble de pompage hydraulique Expired - Lifetime EP1106827B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT206099 1999-12-07
AT0206099A AT412230B (de) 1999-12-07 1999-12-07 Hydraulische pumpeneinheit

Publications (3)

Publication Number Publication Date
EP1106827A2 true EP1106827A2 (fr) 2001-06-13
EP1106827A3 EP1106827A3 (fr) 2002-01-16
EP1106827B1 EP1106827B1 (fr) 2005-02-02

Family

ID=3526929

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890354A Expired - Lifetime EP1106827B1 (fr) 1999-12-07 2000-11-29 Ensemble de pompage hydraulique

Country Status (3)

Country Link
EP (1) EP1106827B1 (fr)
AT (1) AT412230B (fr)
DE (1) DE50009410D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1857674A1 (fr) * 2006-05-10 2007-11-21 Jungheinrich Aktiengesellschaft Agrégat hydrophile

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1537827A (fr) 1967-07-17 1968-08-30 Perfectionnements aux pompes hydrauliques
DE19725564A1 (de) 1997-05-27 1998-12-03 Mannesmann Rexroth Ag Radialkolbenpumpe
DE19726572A1 (de) 1997-06-23 1998-12-24 Mannesmann Rexroth Ag Radialkolbenpumpe
DE19725563A1 (de) 1997-06-17 1998-12-24 Mannesmann Rexroth Ag Radialkolbenpumpe
WO1999019621A1 (fr) 1997-10-09 1999-04-22 Robert Bosch Gmbh Pompe a pistons radiaux pour l'alimentation haute pression en carburant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620733A (en) * 1946-06-19 1952-12-09 John W Overbeke Hydraulic fluid mechanism
US3389660A (en) * 1966-08-15 1968-06-25 Greenlee Bros & Co Pump with pressure relief
GB1300544A (en) * 1968-12-05 1972-12-20 Lucas Industries Ltd Radial piston pumps or motors
US3639087A (en) * 1969-10-29 1972-02-01 Whirlpool Co Solution pump with supercharged suction for absorption air conditioner
US3657971A (en) * 1970-04-21 1972-04-25 Lucas Industries Ltd Radial piston pumps or motors
DE2114691A1 (de) * 1971-03-26 1972-10-12 Fichtel & Sachs Ag, 8720 Schweinfurt Druckerzeuger, insbesondere für Kraftfahrzeuge
GB1453839A (en) * 1973-04-27 1976-10-27 Lucas Industries Ltd Radial piston hydraulic pump
DE3231878C1 (de) * 1982-08-27 1983-11-24 Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen Pumpe fuer hydraulische Anlagen
DE9411024U1 (de) * 1994-07-04 1994-09-01 Hoerbiger Ventilwerke Ag, Wien Hydraulikaggregat

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1537827A (fr) 1967-07-17 1968-08-30 Perfectionnements aux pompes hydrauliques
DE19725564A1 (de) 1997-05-27 1998-12-03 Mannesmann Rexroth Ag Radialkolbenpumpe
DE19725563A1 (de) 1997-06-17 1998-12-24 Mannesmann Rexroth Ag Radialkolbenpumpe
DE19726572A1 (de) 1997-06-23 1998-12-24 Mannesmann Rexroth Ag Radialkolbenpumpe
WO1999019621A1 (fr) 1997-10-09 1999-04-22 Robert Bosch Gmbh Pompe a pistons radiaux pour l'alimentation haute pression en carburant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1857674A1 (fr) * 2006-05-10 2007-11-21 Jungheinrich Aktiengesellschaft Agrégat hydrophile

Also Published As

Publication number Publication date
AT412230B (de) 2004-11-25
EP1106827A3 (fr) 2002-01-16
DE50009410D1 (de) 2005-03-10
EP1106827B1 (fr) 2005-02-02
ATA206099A (de) 2004-04-15

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