EP0464882A1 - Pompe à plateau basculant - Google Patents

Pompe à plateau basculant Download PDF

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Publication number
EP0464882A1
EP0464882A1 EP91201400A EP91201400A EP0464882A1 EP 0464882 A1 EP0464882 A1 EP 0464882A1 EP 91201400 A EP91201400 A EP 91201400A EP 91201400 A EP91201400 A EP 91201400A EP 0464882 A1 EP0464882 A1 EP 0464882A1
Authority
EP
European Patent Office
Prior art keywords
plate
pump
swash
bearing
rotation
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.)
Withdrawn
Application number
EP91201400A
Other languages
German (de)
English (en)
Inventor
Wiecher Jan Heiko Joosse
Wijnand Franciscus Groen
Albertus Cornelis Schermers
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.)
Gentec BV
Original Assignee
Gentec BV
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 Gentec BV filed Critical Gentec BV
Publication of EP0464882A1 publication Critical patent/EP0464882A1/fr
Withdrawn legal-status Critical Current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
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/14—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having stationary cylinders
    • F04B1/141—Details or component parts
    • F04B1/146—Swash plates; Actuating elements
    • F04B1/148—Bearings therefor
    • 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/025—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel
    • F04B43/026—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms two or more plate-like pumping members in parallel each plate-like pumping flexible member working in its own pumping chamber

Definitions

  • the present invention relates to a swash-plate pump according to the preamble of Claim 1.
  • Such a swash-plate pump is known from US-A-2,402,244.
  • the bearing is a rolling bearing.
  • the inner race thereof is connected to the driving element, which is made pin-shaped for that purpose.
  • the outer race acts upon the pump plate.
  • Bodies of rotation such as needles, cones or balls, are fitted between the inner and outer race.
  • the pump plate On one rotation of the driving element the pump plate will carry out a complete movement, i.e. the pistons present will carry out a complete inward and outward stroke.
  • the motors used in the case of such swash-plate pumps are often of the high-speed type.
  • reducers are often fitted between the motor and the pump.
  • slower rotation of the pump is often desired, on account of limiting the noise produced by the pump, the time necessary for closing and opening the various valves in the pump, the type of pumped liquid, and from the point of view of fatiguing of the different parts present in the pump.
  • the height of the pump is also increased by the height of the rolling bearing. If a motor of the same capacity which is suitable for a lower speed of rotation is used, this motor will have to be made larger.
  • the object of the present invention is to provide a swash-plate pump which does not have the above-mentioned disadvantages.
  • a transmission ratio of 2:1 between driving element and the movement of the swash plate is achieved by making the driving element as drive plate or first plate and providing it with a bearing track, while the pump plate or second plate is also provided with a bearing track, with a body of rotation inserted between them.
  • the driving element as drive plate or first plate and providing it with a bearing track
  • the pump plate or second plate is also provided with a bearing track, with a body of rotation inserted between them.
  • the body of rotation can be a conical or cylindrical element, according to a preferred embodiment the body of rotation is a ball. In this way a rotating slanting part can be obtained particularly cheaply.
  • the race for the bearing of the first plate it is preferable for it to be perpendicular. In this way the economic benefits achieved by the invention can be maximized.
  • the swash-plate bearing means can comprise a spherical cap pin. It is also possible to place a ball between the first and the second plate.
  • various pistons can be connected to the second plate. These pistons are preferably integral with the plate and, in order to provide the optimum seal between the piston and cylinder, a shut-off diaphragm upon which the piston can act can be fitted.
  • the pump according to the invention is indicated in its entirety by 1 in Fig. 1. It is accommodated in a housing 4 fixed to an only partially shown tank 19. This tank can be, for example, an LPG tank if the pump is being used for pumping such a material.
  • Fig. 2 shows a detail of the pump indicated by 1 in Fig. 1, and in particular of the pump casing 2 and the motor 3. Motor 3 rotates about an axis indicated by 10. Connected to motor shaft 13 is a first plate 5 provided with a race 12, and also provided with bearing means 14.
  • Pump casing 2 contains a second swash plate 6, which is held in place by a spherical cap pin 11. Plate 6 is provided with three pistons (one piston 8 is shown in the drawing).
  • a bearing 7 comprising a single ball is fitted between the plates 5 and 6.
  • Piston 8 acts upon a diaphragm 16 fitted between pump casing 2 and valve cover. If piston 8 is not fixed to the diaphragm 9, it is important for piston 8 to undergo pre-tensioning in the direction of the first plate 5. In the example of an embodiment shown this is achieved by the pressure difference over the diaphragm, the pressure at the pump side always being higher than that at the drive side.
  • An inlet valve 17 and an outlet valve 18 are also present in pump casing 2.
  • spherical cap pin 11 It is possible instead of spherical cap pin 11 to use a ball 20, which is indicated by dashed lines, and which in turn rests on a bearing 21.
  • the ball 7 As the "slanting element" the stroke speed of the pump is halved compared with the speed of rotation of shaft 13. This is because ball 7 moves at half the speed of shaft 13.
  • inlet valve 17 and outlet valve 18 will be opened and closed at a suitable point in time in the manner known in the state of the art. Since piston 8 is integral with the second plate 6, and therefore does not carry out a precise up and downward movement, it is necessary to provide a seal, which in this case is provided by diaphragm 16.
  • piston 8 When ball 7 is turned away from the place opposite piston 8, piston 8 will be pressed upwards through the pressure difference over diaphragm 16.
  • diaphragm 16 When diaphragm 16 is moved away, partial vacuum occurs in the pump chamber, as a result of which one-way valve 17 is opened and fluid can flow inwards out of tank 19. Outlet 18 then remains closed, and is not opened until there is overpressure in the pump chamber, i.e. during the working stroke of piston 8.
  • the bearing ring between the two plates 5 and 6 can be composed of a larger number of bodies of rotation. It is possible here to fit two balls 7 directly beside each other. It is also possible to fit different bodies of rotation distributed along the periphery, in which case their diameter cannot be the same if the effect envisaged by the invention is to be achieved. Fixing of the second plate 6 relative to the pump casing can also be carried out in all kinds of other ways known in the state of the art, such as with a film hinge.
EP91201400A 1990-07-02 1991-06-06 Pompe à plateau basculant Withdrawn EP0464882A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9001506A NL9001506A (nl) 1990-07-02 1990-07-02 Tuimelschijfpomp.
NL9001506 1990-07-02

Publications (1)

Publication Number Publication Date
EP0464882A1 true EP0464882A1 (fr) 1992-01-08

Family

ID=19857348

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91201400A Withdrawn EP0464882A1 (fr) 1990-07-02 1991-06-06 Pompe à plateau basculant

Country Status (2)

Country Link
EP (1) EP0464882A1 (fr)
NL (1) NL9001506A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744547A2 (fr) * 1995-05-23 1996-11-27 Aquatec Water Systems,Inc. Pompe à plateau biais
EP0751295A1 (fr) * 1995-06-23 1997-01-02 Alfred Kärcher GmbH & Co. Groupe motor-pompe pour appareil de nettoyage à haute pression
EP0936355A2 (fr) * 1998-02-10 1999-08-18 Ohken Seiko Co., Ltd. Pompe à piston
EP1201926A2 (fr) * 2000-10-26 2002-05-02 Okenseiko Co., Ltd. Pompe miniature
CN103147962A (zh) * 2013-03-13 2013-06-12 肖立峰 由圆锥摆动推力轴驱动的隔膜泵

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE468113C (de) * 1928-11-08 Barmer Maschinenfabrik Akt Ges Viskosepumpe zum Speisen der Spinnduesen an Kunstseidespinnmaschinen
US2402244A (en) * 1945-02-01 1946-06-18 Robert S Elberty Pump
DE2944652A1 (de) * 1979-11-06 1981-05-14 Erich 7990 Friedrichshafen Roser Antriebsvorrichtung mit einem rotierenden elektromotor fuer hubbewegliche arbeitsmaschinen
EP0297731A2 (fr) * 1987-06-03 1989-01-04 PRODUCT RESEARCH & DEVELOPMENT Pompe à inclinaison variable du plateau en biais

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE468113C (de) * 1928-11-08 Barmer Maschinenfabrik Akt Ges Viskosepumpe zum Speisen der Spinnduesen an Kunstseidespinnmaschinen
US2402244A (en) * 1945-02-01 1946-06-18 Robert S Elberty Pump
DE2944652A1 (de) * 1979-11-06 1981-05-14 Erich 7990 Friedrichshafen Roser Antriebsvorrichtung mit einem rotierenden elektromotor fuer hubbewegliche arbeitsmaschinen
EP0297731A2 (fr) * 1987-06-03 1989-01-04 PRODUCT RESEARCH & DEVELOPMENT Pompe à inclinaison variable du plateau en biais

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744547A2 (fr) * 1995-05-23 1996-11-27 Aquatec Water Systems,Inc. Pompe à plateau biais
EP0744547A3 (fr) * 1995-05-23 1997-03-12 Aquatec Water Systems Inc Pompe à plateau biais
EP0751295A1 (fr) * 1995-06-23 1997-01-02 Alfred Kärcher GmbH & Co. Groupe motor-pompe pour appareil de nettoyage à haute pression
EP0936355A2 (fr) * 1998-02-10 1999-08-18 Ohken Seiko Co., Ltd. Pompe à piston
EP0936355A3 (fr) * 1998-02-10 2001-04-18 Ohken Seiko Co., Ltd. Pompe à piston
EP1201926A2 (fr) * 2000-10-26 2002-05-02 Okenseiko Co., Ltd. Pompe miniature
EP1201926A3 (fr) * 2000-10-26 2003-06-25 Okenseiko Co., Ltd. Pompe miniature
EP1906018A2 (fr) * 2000-10-26 2008-04-02 Okenseiko Co., Ltd. Pompe miniature
EP1906018A3 (fr) * 2000-10-26 2008-05-07 Okenseiko Co., Ltd. Pompe miniature
CN103147962A (zh) * 2013-03-13 2013-06-12 肖立峰 由圆锥摆动推力轴驱动的隔膜泵
CN103147962B (zh) * 2013-03-13 2015-09-02 肖立峰 由圆锥摆动推力轴驱动的隔膜泵

Also Published As

Publication number Publication date
NL9001506A (nl) 1992-02-03

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