EP1106827B1 - Hydraulische Pumpeneinheit - Google Patents
Hydraulische Pumpeneinheit Download PDFInfo
- Publication number
- EP1106827B1 EP1106827B1 EP00890354A EP00890354A EP1106827B1 EP 1106827 B1 EP1106827 B1 EP 1106827B1 EP 00890354 A EP00890354 A EP 00890354A EP 00890354 A EP00890354 A EP 00890354A EP 1106827 B1 EP1106827 B1 EP 1106827B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- backing
- common
- medium
- drive shaft
- 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.)
- Expired - Lifetime
Links
- 238000005086 pumping Methods 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 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 a plurality, in a pump housing in a substantially star shape around a common Drive shaft arranged pump elements, each one of the medium to be pumped actuated inlet and outlet valve is assigned, wherein in the medium supply to the intake valves also driven by the common drive shaft backing pump is turned on, the impeller on the opposite end of the drive the drive shaft is rotatably disposed, and wherein further the pressure side of the fore pump with a common inlet channel in the pump housing leading to all inlet valves communicates.
- a hydraulic pump unit with a radial piston pump, with a plurality, in a pump housing in a substantially star shape around a common Drive shaft arranged pump elements, each one of the medium to be pumped actuated inlet and outlet valve is assigned, wherein in the medium supply to the intake valves also driven by the common drive shaft backing pump is turned on, the impeller on the opposite end of the drive the drive shaft is rotatably disposed
- Hydraulic pump units with radial piston pumps of the simplest type such as For example, in small, independent of the drive motor, electrically operated Hydraulic units for operating vehicle concealment or the like since are used without valve control over a centrally located application common drive eccentric shaft driven pump elements operated what Although the design effort is very low, but also low efficiencies allowed. By the present at the on or controlling the respective individual pump elements unfavorable pressure conditions arise in such units beyond According to pressure pulses, noise in the entire connected hydraulics, which disturbing and are undesirable.
- FR 1 537 827 A Made of e.g. FR 1 537 827 A is a hydraulic pump unit of the aforementioned Art known, which avoids the mentioned disadvantages in that in the medium supply to the intake valves also driven by the common drive shaft Pre-pump is switched on. This forepump ensures that always positive pressure on the suction side of the intake valves is applied, whereby the mentioned difficulties are overcome.
- Object of the present invention is to the mentioned disadvantages of the known Arrangement of the type mentioned to avoid and such an arrangement so improve that they also in crowded space, for example, at the beginning addressed applications in vehicles.
- the common inlet channel annular outside of the pump housing is provided circumferentially that the backing pump is designed in the manner of a centrifugal pump, and that the suction side of the backing pump immediately arranged sealed to the pump housing relative to the drive motor Medium tank facing and only the suction side of the fore pump with the Medium tank is connected directly or via a short suction line.
- This can be a very compact design can be achieved because the inflow and outflow conditions on the centrifugal pump sealed together with the on the pump housing relative to the drive motor arranged medium tank and the directly related suction line allow a very advantageous arrangement.
- This also allows the inlet and Zuströmwiderinterest be minimized to the suction side of the backing pump, bringing the efficiency of Overall arrangement is increased. And finally, through this forepump on easy Make the low-temperature increased suction for the radial piston pump be compensated.
- the pressure side of the fore pump is with one to all inlet valves of the radial piston pump leading common inlet channel in the pump housing in conjunction, bringing the Inflow from the backing pump to the inlet side of the individual pump elements simplified and is improved in view of the problem described.
- Fig. 1 shows a Longitudinal section through such a pump unit and Fig. 2 is a section along the line II-II in Fig. 1.
- the illustrated hydraulic pump unit consists essentially of a Pump housing 1, a flanged on the right side in the representation flanked Drive motor 2 and one sealed on the left side in the illustration attached medium tank 3, which up to an indicated level 4 with hydraulic medium is filled. Not visible here are the leads to this pump unit supplied with pressure medium units or equipment, such as hydraulic Working cylinders or the like, fasteners of the pump unit, electrical lines for the supply of the drive motor 2 and the like.
- a radial piston pump 5 is installed, with several, in the Pump housing 1 arranged substantially in a star shape around a common drive shaft 6 Pump elements 7, of which, according to the sectional guide in Fig. 1 only one is seen.
- Each of the three pump elements 7 here, for example, has one from to pumping medium automatically actuated inlet and outlet valve, which according to Art a spring-loaded check valve work.
- the associated outlet valve for example, also at the outer end of the Pump element 7 may be arranged laterally perpendicular to the axis thereof.
- a fore pump 11 is turned on, which is designed in the manner of a centrifugal pump whose impeller 12 on the the drive motor 2 opposite end of the drive shaft 6 rotatably disposed and thus driven together with the pump elements 7.
- the entire backing pump 11 is - as shown in Fig. 1 - with the radial piston pump 5 integrated in the common pump housing 1 and facing the medium tank 3 Side closed with an existing example of plastic lid 13.
- This cover 13 has centrally a sealed inserted short suction line 14 in the Hydraulic medium in the medium tank 3 alternatively could instead of the suction line used 14 but also a suction hole in the cover 13 are provided, as shown in Fig. 1st indicated by dashed lines and designated 15.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
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, mit der Radialkolbenpumpe (5) in einem gemeinsamen Pumpengehäuse (1) integrierte 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 der gemeinsame Einlasskanal (9) ringförmig außen am Pumpengehäuse (1) umlaufend vorgesehen ist, daß die Vorpumpe (11) nach Art einer Kreiselpumpe ausgebildet ist, und daß die Saugseite der Vorpumpe (11) unmittelbar dem auf dem Pumpengehäuse (1) gegenüber dem Antriebsmotor (2) abgedichtet angeordneten Mediumtank (3) zugewandt und ausschließlich die Saugseite der Vorpumpe (11) mit dem Mediumtank (3) 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 EP1106827A2 (de) | 2001-06-13 |
| EP1106827A3 EP1106827A3 (de) | 2002-01-16 |
| EP1106827B1 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006021682A1 (de) * | 2006-05-10 | 2007-11-15 | Jungheinrich Ag | Hydraulikaggregat |
Family Cites Families (14)
| 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 |
| FR1537827A (fr) * | 1967-07-17 | 1968-08-30 | Perfectionnements aux pompes hydrauliques | |
| 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 |
| DE19725564C2 (de) | 1997-05-27 | 2001-05-23 | Hydraulik Ring Gmbh | 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 |
| DE19744577A1 (de) | 1997-10-09 | 1999-04-22 | Bosch Gmbh Robert | Radialkolbenpumpe zur Kraftstoffhochdruckversorgung |
-
1999
- 1999-12-07 AT AT0206099A patent/AT412230B/de not_active IP Right Cessation
-
2000
- 2000-11-29 DE DE50009410T patent/DE50009410D1/de not_active Expired - Lifetime
- 2000-11-29 EP EP00890354A patent/EP1106827B1/de not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP1106827A2 (de) | 2001-06-13 |
| DE50009410D1 (de) | 2005-03-10 |
| AT412230B (de) | 2004-11-25 |
| EP1106827A3 (de) | 2002-01-16 |
| ATA206099A (de) | 2004-04-15 |
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