EP0432037B1 - Radialpumpe mit mehreren Zylindern - Google Patents

Radialpumpe mit mehreren Zylindern Download PDF

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Publication number
EP0432037B1
EP0432037B1 EP19900403454 EP90403454A EP0432037B1 EP 0432037 B1 EP0432037 B1 EP 0432037B1 EP 19900403454 EP19900403454 EP 19900403454 EP 90403454 A EP90403454 A EP 90403454A EP 0432037 B1 EP0432037 B1 EP 0432037B1
Authority
EP
European Patent Office
Prior art keywords
cylinders
row
high pressure
pressure chamber
pump according
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
Application number
EP19900403454
Other languages
English (en)
French (fr)
Other versions
EP0432037A1 (de
Inventor
Jean-Claude Maillochaud
Joel Dessirieix
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Publication of EP0432037A1 publication Critical patent/EP0432037A1/de
Application granted granted Critical
Publication of EP0432037B1 publication Critical patent/EP0432037B1/de
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
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
    • F04B1/0536—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units
    • F04B1/0538—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with two or more serially arranged radial piston-cylinder units located side-by-side

Definitions

  • the present invention relates to a multi-cylinder radial pump comprising a rotating shaft provided with an eccentric actuating a plurality of pistons arranged peripherally and staggered in two rows and a high pressure chamber disposed on the side opposite to) the drive and to which conduits converge. delivery from the cylinders of the row located on the same side, the pump comprising a body on opposite faces of which are fixed a cover and a cover defining the high pressure chamber.
  • a pump of this kind is described in French patents 2,566,467 and 2,597,163.
  • the present invention relates to a pump multicylindrical radial of the type in question and which makes it possible to increase the flow in the high pressure chamber.
  • the pump according to the invention is characterized in that the cover and the cover are fixed to the body by independent means and in that at least one of the cylinders of the first row situated on the side of the drive is connected by a internal conduit to the high pressure chamber.
  • the pump comprises a body 1, a cover 2 fixed to the body 1 by three screws 3 and a capacity 4 fixed to the body 1 by six screws 5.
  • the body 1 and the cover 2 are each provided with a pad 6 a or 6 b .
  • These two bearings carry the shaft 7 on which the drive pulley 8 is mounted.
  • the shaft 7 is provided with a sealing ring 9 and is integral with an eccentric 10 which actuates two rows of six hollow pistons 11 a and 11 b arranged peripherally and mounted to slide in cylinders 17 or 31 formed in the body 1. These pistons are held in abutment on the eccentric 10 by springs 12.
  • Each piston 11 a and 11 b has a hole 13, a cage provided with slots 14 and a ball 15, and enters the suction chamber 16 formed in the body 1. During the descent of the piston to bottom dead center, the ball 15 lifts and abuts on the cage 14. The liquid passes from the chamber 16 inside the piston through the hole 13.
  • the pistons 11 a of the first row are here six in number.
  • Each of their cylinders 17 includes a thread 18 into which is screwed a plug 19 provided with a seal 20 so as to provide above the piston a discharge chamber 21 which communicates by a conduit 22 with a high pressure chamber 23 located in pump end and bounded by capacity 4.
  • the plug 19 serves as a support for the spring 12.
  • a piece 24 of elastic material has six radial blades 24 a .
  • Each blade 24 has is opposite the opening of one of the bores 22 and forms a valve.
  • On the part 24 comes to bear a second elastic blade 25 comprising as many legs as there are valves.
  • Each leg of the blade is folded as indicated in 25 a and presses on the center of a valve 24 a in an elastic manner; a central screw 26 secures the two parts 24 and 25 to the pump body 1 at the same time as that of a pressure relief valve 27.
  • the ball 15 closes the hole 13.
  • the pressurized liquid passes through the holes 22 and enters the chamber 23 by lifting one of the blades 24 a serving as a valve.
  • Chamber 23 has an outlet connection 28 and contains the pressure relief valve 27 which allows, when the setting pressure is reached, to evacuate the excess liquid by a hole 29 in the screw 26 and holes 30 in the shaft 7 towards the suction chamber 16.
  • Each of their cylinders 31 comprises a cartridge 32 fixed in a leaktight manner by a tapping 33 and an O-ring 34.
  • Each cartridge 32 comprises a valve seat 35, a valve 36, a valve return spring 37 and a cage of valve 38 with connection conduits 39 cut in the seat and the valve cage.
  • Five of the cartridges 32 form a plug, the sixth having an external outlet 41.
  • the cartridges 32 forming plugs two are connected by bores 42 to the external outlet 41; the other three are connected by holes 43 to chamber 23.
  • valve cartridges 32 form plugs and are connected by holes 43 to the chamber 23.
  • all of the valve cartridges 32 are eliminated and replaced by simple plugs 44 without delivery valves.
  • Blade valves 45 in a number equal to that of the pistons 11 b are added to the blade valves 24; the blade 25 thus has twelve legs. In these two embodiments, the pump thus has only one outlet 28.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (6)

  1. Mehrzylinder-Radialpumpe mit einer drehenden Welle (7), die mit einem Exzenter (10) versehen ist, welcher mehrere, peripher in zwei Reihen angeordnete Kolben (11a) und (11b) betätigt, und mit einer Hochdruckkammer (23), die an der dem Antrieb gegenüberliegenden Seite angeordnet ist und auf die von den Zylindern (17) der an der gleichen Seite gelegenen Reihe ausgehende Förderleitungen (22) zulaufen, wobei die Pumpe ein Gehäuse (1) aufweist, an dem an einander gegenüberliegenden Seiten ein Deckel (2) und eine die Hochdruckkammer (23) begrenzende Abdeckhaube (4) befestigt sind, dadurch gekennzeichnet, daß der Deckel (2) und die Abdeckhaube (4) am Gehäuse (1) über voneinander unabhängige Mittel (3 und 5) befestigt sind und das mindestens einer der Zylinder (31) der an der Antriebsseite gelegenen Reihe über eine innere Leitung (43) mit der Hochdruckkammer (23) verbunden ist.
  2. Pumpe nach Anspruch 1 dadurch gekennzeichnet, daß die Zylinder (31) der ersten Reihe mit Ventileinsätzen (32) versehen sind und daß einer dieser Einsätze einen äußeren Ausgang (41) aufweist, ein weiterer mit der Hochdruckkammer (23) verbunden ist, während die anderen Einsätze Stopfen bilden und entweder über eine interne Leitung (42) mit dem ersten Einsatz oder über eine interne Leitung (43) mit der Hochdruckkammer (23) verbunden sind.
  3. Pumpe nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß die Druckventile der Zylinder (31) der zweiten Reihe aus Zweigen eines gleichen sternförmig ausgeschnittenen Bauteils (24) gebildet sind.
  4. Pumpe nach Anspruch 3 dadurch gekennzeichnet, daß die Zylinder (31) der ersten Reihe mit einem äußeren Ausgang (41) versehen sind und die anderen mit einfachen Stopfen (44), denen durch die anderen Zweige des Bauteils (24) gebildete Ventile zugeordnet sind.
  5. Pumpe nach Anspruch 1 dadurch gekennzeichnet, daß alle Zylinder (31) der ersten Reihe mit Ventileinsätzen (32) versehen sind, welche Stopfen bilden und mit der Hochdruckkammer (23) verbunden sind.
  6. Pumpe nach Anspruch 3 dadurch gekennzeichnet, daß die Zylinder (31) der ersten Reihe mit einfachen Stopfen (44) versehen und mit der Hochdruckkammer (23) über aus zusätzlichen Zweigen des Bauteils (24) gebildete Ventile verbunden sind.
EP19900403454 1989-12-07 1990-12-05 Radialpumpe mit mehreren Zylindern Expired - Lifetime EP0432037B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8916840A FR2655690B1 (fr) 1989-12-07 1989-12-07 Pompe radiale multicylindrique.
FR8916840 1989-12-07

Publications (2)

Publication Number Publication Date
EP0432037A1 EP0432037A1 (de) 1991-06-12
EP0432037B1 true EP0432037B1 (de) 1993-06-09

Family

ID=9388717

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900403454 Expired - Lifetime EP0432037B1 (de) 1989-12-07 1990-12-05 Radialpumpe mit mehreren Zylindern

Country Status (3)

Country Link
EP (1) EP0432037B1 (de)
DE (1) DE69001889T2 (de)
FR (1) FR2655690B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4136624A1 (de) * 1991-11-07 1993-05-27 Daimler Benz Ag Ventilgesteuertes verdraengeraggregat mit ventilausloesung
DE4326389A1 (de) * 1993-08-06 1995-02-16 Teves Gmbh Alfred Hydraulische Pumpe
DE4425402A1 (de) * 1993-08-06 1996-04-04 Teves Gmbh Alfred Hydraulische Pumpe
FR2802577B1 (fr) 1999-12-17 2002-03-08 Peugeot Citroen Automobiles Sa Pompe a pistons multiples et a comportement vibratoire ameliore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2566467B1 (fr) * 1984-06-21 1988-12-09 Peugeot Pompe multipistons a clapets a lame
FR2597163B1 (fr) * 1986-04-15 1988-07-29 Peugeot Pompe multipistons a clapets a lame
DE3833560A1 (de) * 1987-10-07 1989-04-20 Zahnradfabrik Friedrichshafen Pumpenanordnung

Also Published As

Publication number Publication date
DE69001889D1 (de) 1993-07-15
EP0432037A1 (de) 1991-06-12
FR2655690A1 (fr) 1991-06-14
DE69001889T2 (de) 1993-12-02
FR2655690B1 (fr) 1992-02-14

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