EP1106827A2 - Hydraulische Pumpeneinheit - Google Patents
Hydraulische Pumpeneinheit Download PDFInfo
- 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
Links
- 238000005086 pumping Methods 0.000 abstract description 2
- 230000037452 priming Effects 0.000 abstract 3
- 230000015572 biosynthetic process Effects 0.000 abstract 1
Images
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)
Abstract
Description
Claims (1)
- Hydraulische Pumpeneinheit, mit einer Radialkolbenpumpe (5), mit mehreren, in einem Pumpengehäuse (1) im wesentlichen sternförmig um eine gemeinsame Antriebswelle (6) angeordneten Pumpenelementen (7), denen jeweils ein vom zu pumpenden Medium betätigtes Einlaß- (8) und Auslaßventil zugeordnet ist, wobei in die Mediumzuführung zu den Einlaßventilen (8) eine ebenfalls von der gemeinsamen Antriebswelle (6) angetriebene Vorpumpe (11) eingeschaltet ist, deren Schaufelrad (12) auf dem dem Antrieb gegenüberliegenden Ende der Antriebswelle (6) drehfest angeordnet ist, und wobei weiters die Druckseite der Vorpumpe (11) mit einem zu allen Einlaßventilen (8) führenden gemeinsamen Einlaßkanal (9) im Pumpengehäuse (1) in Verbindung steht, dadurch gekennzeichnet, daß die Vorpumpe (11) nach Art einer Kreiselpumpe ausgebildet und mit der Radialkolbenpumpe (5) in einem gemeinsamen Pumpengehäuse (1) integriert ist, und daß die Saugseite der Vorpumpe (11) unmittelbar dem auf dem Pumpengehäuse (1) gegenüber dem Antriebsmotor (2) abgedichtet angeordneten Mediumtank (3) zugewandt und mit diesem direkt oder über eine kurze Saugleitung (14, 15) verbunden ist.
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 (de) | 2001-06-13 |
| EP1106827A3 EP1106827A3 (de) | 2002-01-16 |
| EP1106827B1 EP1106827B1 (de) | 2005-02-02 |
Family
ID=3526929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00890354A Expired - Lifetime EP1106827B1 (de) | 1999-12-07 | 2000-11-29 | Hydraulische Pumpeneinheit |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1106827B1 (de) |
| AT (1) | AT412230B (de) |
| DE (1) | DE50009410D1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1857674A1 (de) * | 2006-05-10 | 2007-11-21 | Jungheinrich Aktiengesellschaft | Hydraulikaggregat |
Citations (5)
| 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 (de) | 1997-10-09 | 1999-04-22 | Robert Bosch Gmbh | Radialkolbenpumpe zur kraftstoffhochdruckversorgung |
Family Cites Families (9)
| 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 |
-
1999
- 1999-12-07 AT AT0206099A patent/AT412230B/de not_active IP Right Cessation
-
2000
- 2000-11-29 EP EP00890354A patent/EP1106827B1/de not_active Expired - Lifetime
- 2000-11-29 DE DE50009410T patent/DE50009410D1/de not_active Expired - Lifetime
Patent Citations (5)
| 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 (de) | 1997-10-09 | 1999-04-22 | Robert Bosch Gmbh | Radialkolbenpumpe zur kraftstoffhochdruckversorgung |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1857674A1 (de) * | 2006-05-10 | 2007-11-21 | Jungheinrich Aktiengesellschaft | Hydraulikaggregat |
Also Published As
| Publication number | Publication date |
|---|---|
| AT412230B (de) | 2004-11-25 |
| EP1106827A3 (de) | 2002-01-16 |
| DE50009410D1 (de) | 2005-03-10 |
| EP1106827B1 (de) | 2005-02-02 |
| ATA206099A (de) | 2004-04-15 |
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