EP0288216B1 - Pompe électrique à liquides - Google Patents

Pompe électrique à liquides Download PDF

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Publication number
EP0288216B1
EP0288216B1 EP19880303388 EP88303388A EP0288216B1 EP 0288216 B1 EP0288216 B1 EP 0288216B1 EP 19880303388 EP19880303388 EP 19880303388 EP 88303388 A EP88303388 A EP 88303388A EP 0288216 B1 EP0288216 B1 EP 0288216B1
Authority
EP
European Patent Office
Prior art keywords
armature
piston
fluid
combination
guide
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
Application number
EP19880303388
Other languages
German (de)
English (en)
Other versions
EP0288216A1 (fr
Inventor
Jean Claude Buffet
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.)
BorgWarner Transmission Systems Monaco SAM
Original Assignee
Eaton SAM
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 Eaton SAM filed Critical Eaton SAM
Publication of EP0288216A1 publication Critical patent/EP0288216A1/fr
Application granted granted Critical
Publication of EP0288216B1 publication Critical patent/EP0288216B1/fr
Expired 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
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0223—Electromagnetic pumps

Definitions

  • This invention relates to an electrical pump for fluids, eg hot water or for coffee machines, with economical outlay and power consumption.
  • a generally cylindrical armature/piston combination which slides axially and has a generally axial internal bore to pass fluid from an inlet to an outlet, also has one or more radial bores between the axial bore and its exterior inside a sliding guide for the combination.
  • the combination has axial external grooves for the same purpose.
  • the general purpose is to prevent fluid build-up between the combination and its guide.
  • Such a build-up has a braking effect on the armature/piston combination due to pressure and viscosity, but is relieved by these prior art artifices.
  • the bore is expensive to machine and the machining can form a burr (a jagged irregularity projecting from the hole) which tends to scrape and wear out at least the assembly and its guide.
  • burrs or wear the loss of force and power due to peripheral fluid build-up can amount to 50%, and so has typically been dealt with in this way.
  • external grooves of the state of the art can be expensive and time consuming to produce by machining etc.
  • the invention aims also to minimize the peripheral fluid presence and consequent braking effect, but without causing a burr and/or incurring the expense of shaping the armature/piston combination.
  • the reduction in braking effect can lead to greater noise and shocks being generated.
  • the armature/piston assembly guide is shaped according to one feature of the invention to facilitate peripheral fluid mobility. Also the piston face is equipped to counter the noise and shock generation. According to a preference of the invention, production of the downstream part or end of the combination is simplified. In the past it has been externally tapered or reduced in diameter by machining; which is quite expensive in time and loss of magnetic material. The machining of the guide, or other shaping is advantageous, then, even though the guide has to be radially thicker, with some loss of magnetic coupling to the armature.
  • a preferred embodiment provides an armature assembly formed by a reduced diameter body which may be of a different, non-magnetic material or metal, crimped to the main body of the assembly. The axial bore must be continuous but the reduced diameter body can be machined or moulded, cast etc separately before the two pieces are crimped together.
  • a pump has an inlet port 1 from which fluid is pumped by an axially vibrating armature/piston combination 2 to an outlet port 3, through an axial bore 4 in the entire length of combination 2, an inlet valve 5 and an outlet valve 6 in an axial passage in the housing 7 leading to the outlet port 3.
  • the outlet valve 6 is merely a one-way passive or flow-responsive valve, but the inlet valve 5 is opened by separation of the piston part, ie by the leftward movements of armature/piston 2 in its vibrations.
  • the leftward movements cause fluid to be transferred from inlet port 1 past the inlet valve 5 and thence to the outlet 3.
  • the leftward armature movements are caused by repeated energizations of a solenoid coil 8 via a terminal T and act against a return spring 9.
  • the repeated energizations can result conveniently from half-wave rectified ac, eg at 50 Hz, between the half-waves of which the spring returns the combination rightward to close inlet valve 5.
  • Both valves 5 and 6 are spring closed by return springs 10 and 11, spring 10 being weaker than spring 9.
  • the magnetic circuit may comprise outside the coil outer encapsulation 19, a rectangular yoke (not shown) of two L-sectioned pieces crimped together along their corners, a first cylindrical internal part 20 outside the thin armature guide 13, a ring 21 magnetically connecting the yoke and cylinder 20, a second cylindrical internal part 22, and a ring 23 communicating cylinder 22 to the yoke.
  • the L-pieces have respective holes closely surrounding rings 21, 23.
  • the guide 13 has eg. five internal longitudinal ribs 25 (see also Fig.4) on which the sliding armature bears and between which any trapped fluid can readily return (as shown by the flow line arrows 25') to the pumped stream travelling rightwards through the bore.
  • the ribs can be provided without machining and at low cost in the mould of plastic guide 13, and free particles are unlikely and not metallic.
  • the longitudinal irregularities in the guide either can be strictly parallel to the axis, or can be oblique or helical or otherwise to provide this longitudinal communication, and hence lack of pressure build-up and viscosity drag, while enabling efficient piston effect and hence pumping action.
  • the armature/piston can be preferably in two parts as shown in Figs. 2 and 3, while having the inventive elongated irregularities of Fig 4 or variations thereof.
  • the pressure reducing irregularities in the guide are best seen in the transverse cross-sectional view of Fig 4, but they are longitudinal in nature, being grooves or ribs or corners either parallel to the axis on having an axially directed component (eg. helical irregularities in the guide).
  • a wide part 26 of the armature/piston has a central bore 27 and a holding portion 28, the top of which has an annular groove 29 to surround a lip 30 which can be crimped inwards by a suitable tool (not shown).
  • the section of bore 31 of holding part 28 serves to accommodate a non-magnetic part 32 (eg. of brass or lighter plastics as suitable) shown in Figs 1 and 3.
  • Part 32 has a waist 33 to accommodate in fluid-tight manner an annulus of crimped-in material from lip 30 as can be seen in Fig. 3.
  • the end 34 of part 32 is shaped to serve as a valve seat for inlet valve 5, Fig. 1.
  • the inlet end 35 of wide part 26 may be flared to promote flow and have a circular projection to seat and hold the return spring 9. No ribs or grooves in the wide part of the armature need be present, such flow-conducive shapings applied to the guide only are adequate. Not only is the narrow part provided without necessity to machine down the wide part, but boring only of shorter axial lengths is needed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Reciprocating Pumps (AREA)
  • Magnetically Actuated Valves (AREA)

Claims (5)

  1. Une pompe à liquide comprenant un ensemble oscillant combiné noyau magnétique piston, avec un forage à travers passe le liquide pompé, dans laquelle le liquide infiltré tendant à se trouver emprisonné entre les parois intérieures du manchon de guidage (13) et la surface extérieure de la partie de grand diamètre (26) de l'ensemble noyau piston (2) se trouve renvoyé au lieu de cela dans le courant de liquide pompé, au moyen d'une structuration avec des irrégularités différentielles ou relatives entre lesdites surfaces de parois internes et externes caractérisée par le fait que lesdites irrégularités sont des irrégularités non circulaires (25) prévues à l'intérieur du manchon de guidage (13) qui comporte néanmoins une surface de portée pour le mouvement alternatif de l'ensemble noyau piston (2), que lesdites irrégularités assurent une communication longitudinale continue pour le liquide entre les deux extrémités du noyau piston et par le fait que les chocs et les bruits résultant de l'atténuation de l'effet de freinage obtenue avec la réduction des quantités de liquide emprisonnées sont contrecarrés par un anneau amortisseur (15) et par des bagues d'étanchéité (17,18) pouvant être nécessaires et agissant la surface frontale (29,30) de la partie de grand diamètre (26) du noyau.
  2. Une pompe à liquide selon la revendication 1 caractérisée par le fait que l'ensemble noyau-piston comporte un prolongement (32) de diamètre relativement faible, ne bute pas contre ledit anneau et lesdites bagues d'étanchéité mais passe à travers, qui provoque l'ouverture et la fermeture d'une soupape (5), ladite extension étant en saillie sur ladite face transversale (29,30) du noyau, et qui est constitué par une pièce forée non magnétique séparée assemblée par sertissage (30,33) ou de quelque autre manière avec une partie de grand diamètre (26) qui est magnétique.
  3. Une pompe à liquide selon la revendication 2 comprenant un gorge (33) pratiquée dans le prolongement axial (32) dans laquelle est rabattue la partie (30) de ladite face transversale de la partie de grand diamètre (26) de l'ensemble.
  4. Une pompe à liquide selon l'une quelconque des revendications de 1 à 3 caractérisé par le fait que les irrégularités non circulaires sont des nervures de guidage longitudinales (25) qui s'étendent le long de la paroi intérieure du manchon de guidage du noyau.
  5. Une pompe à liquide selon l'une quelconque des revendications de 1 à 4 caractérisé par le fait qu'elle comporte des soupapes d'entrée et de sortie disposées en série du côté aval de la pompe, qui sont des soupapes passives mais comportant des ressorts de rappel en position fermée.
EP19880303388 1987-04-15 1988-04-14 Pompe électrique à liquides Expired EP0288216B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8709082 1987-04-15
GB878709082A GB8709082D0 (en) 1987-04-15 1987-04-15 Electrical fluid pump

Publications (2)

Publication Number Publication Date
EP0288216A1 EP0288216A1 (fr) 1988-10-26
EP0288216B1 true EP0288216B1 (fr) 1992-04-15

Family

ID=10615907

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880303388 Expired EP0288216B1 (fr) 1987-04-15 1988-04-14 Pompe électrique à liquides

Country Status (4)

Country Link
EP (1) EP0288216B1 (fr)
DE (1) DE3870017D1 (fr)
ES (1) ES2030856T3 (fr)
GB (1) GB8709082D0 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005048765A1 (de) * 2005-10-10 2007-04-12 Aweco Appliance Systems Gmbh & Co. Kg Schwingankerpumpe
DE102010044775A1 (de) 2009-09-09 2011-03-10 Rudolf Lonski Schwingankerpumpe
DE202011050601U1 (de) 2011-07-01 2012-10-09 Wik Far East Ltd. Flüssigkeitspumpe
DE202011050599U1 (de) 2011-07-01 2012-10-09 Wik Far East Ltd. Flüssigkeitspumpe
DE202011050598U1 (de) 2011-07-01 2012-10-09 Wik Far East Ltd. Flüssigkeitspumpe
WO2013004620A1 (fr) 2011-07-01 2013-01-10 Wik Far East Ltd. Pompe à piston alternatif à entraînement magnétique
US8733230B2 (en) 2008-05-28 2014-05-27 Nestec S.A. Pump for liquid beverage preparation devices
DE102013107482A1 (de) * 2013-07-15 2015-01-15 Sysko AG Systeme und Komponenten Kolben für eine Schwingankerpumpe
WO2015007429A1 (fr) * 2013-07-15 2015-01-22 Sysko Ag Piston pour pompe à armature oscillante
EP4015823A1 (fr) 2020-12-16 2022-06-22 Aerzener Maschinenfabrik GmbH Unité de moteur à piston rotatif pourvu de dispositif d'alimentation en lubrifiant
DE102022116097A1 (de) 2022-06-28 2023-12-28 Sysko AG Systeme & Komponenten Schwingankerpumpe

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2062909C1 (ru) * 1993-04-21 1996-06-27 Акционерное общество закрытого типа "Биотехинвест" Вибрационный насос
DE4437670C1 (de) * 1994-10-21 1996-04-04 Samaro Eng & Handel Pumpe zum Fördern von Flüssigkeiten
US5567131A (en) * 1995-04-20 1996-10-22 Gorman-Rupp Industries Spring biased check valve for an electromagnetically driven oscillating pump
IT1299987B1 (it) * 1998-04-27 2000-04-04 Magneti Marelli Spa Pompa volumetrica.
IT246634Y1 (it) 1999-04-09 2002-04-09 Ulka Srl Pistone composito per pompa a vibrazione
ITMI20010420A1 (it) * 2001-03-01 2002-09-01 Inc Dell Orto S P A Pompa comandata da elettromagnete
FR2823260B1 (fr) * 2001-04-04 2003-12-19 Marwal Systems Pompe de dosage et de distribution d'un liquide
ITMI20020271U1 (it) * 2002-05-23 2003-11-24 C E M E Engineering S P A Elettropompa migliorata
ITUD20030162A1 (it) * 2003-07-30 2005-01-31 Invensys Controls Italy Srl Pompa elettromagnetica a nucleo oscillante.
CH703076B1 (fr) * 2003-12-17 2011-11-15 Gotec S A Pompe avec cartouche.
ITMI20050688A1 (it) * 2005-04-18 2006-10-19 Dellorto Spa Impianto di alimentazione del combustibile per motori a combustione interna e gruppo pompa-iniettore ad azionamento elettromagnetico utilizzato in tale impianto
UA84716C2 (uk) 2006-05-06 2008-11-25 Александр Сергеевич Баринин Зворотний клапан вібраційного поршневого насоса
DE202007019534U1 (de) 2007-02-14 2013-06-26 Johnson Electric Dresden Gmbh Schwingkolbenpumpe
DE102007007297A1 (de) 2007-02-14 2008-08-21 Saia-Burgess Dresden Gmbh Schwingkolbenpumpe
CN101755123B (zh) * 2007-03-15 2012-10-31 Ceme控股公司 具有浮动活塞的液压电磁式电动泵
CN101344083B (zh) * 2008-03-10 2010-06-16 熊颖申 一种应用于柱塞式水泵中的新型活塞
PT2107242E (pt) * 2008-04-01 2012-02-07 Nestle Sa Aparelho distribuidor de bebidas compreendendo uma bomba de solenóide e um método de controlar a bomba de solenóide
IT1392178B1 (it) * 2008-12-10 2012-02-22 Olab Srl Pompa a vibrazione particolarmente per l'erogazione di fluidi incomprimibili a bassa e media viscosita'.
DE102009006577A1 (de) * 2009-01-29 2010-08-05 Bleckmann Gmbh & Co. Kg Heizsystem mit Heizeinheit und integrierter Pumpe
DK2273117T3 (da) 2009-06-03 2013-10-07 Nestec Sa Fremgangsmåde til detektering af kedelstensdannelse i en driktilberedningsmaskine
AU2011222950B2 (en) * 2010-03-05 2014-10-09 Nestec S.A. Reduction of pump nuisance
ITGE20120097A1 (it) * 2012-09-25 2014-03-26 A R S Elettromeccanica Srl Pompa a vibrazione
DE102012020274B4 (de) 2012-10-17 2018-10-31 Thomas Magnete Gmbh Elektromagnetisch angetriebene Hubkolbenpumpe mit Dämpfungselement
ES2442618B1 (es) * 2013-11-06 2014-09-02 Teylor Intelligent Processes, S.L. Bomba vibratoria a pistón
DE102013112306A1 (de) 2013-11-08 2015-05-13 Pierburg Gmbh Magnetpumpe für ein Hilfsaggregat eines Fahrzeugs sowie Verfahren zur Steuerung einer Magnetpumpe für ein Hilfsaggregat
WO2016139531A1 (fr) * 2015-03-05 2016-09-09 Ode S.R.L. Pompe vibrante hydraulique pour machines à café ou distributeurs automatiques de boissons
DE102015105316A1 (de) * 2015-04-08 2016-10-13 Sysko Ag Schwingankerpumpe
DE102015107207A1 (de) 2015-05-08 2016-11-10 Pierburg Gmbh Magnetpumpe für ein Hilfsaggregat eines Fahrzeugs
IT201700060837A1 (it) * 2017-06-05 2018-12-05 Ceme Spa Motopompa idraulica elettromagnetica con pistone flottante
DE102017008549B4 (de) 2017-09-12 2023-08-10 Thomas Magnete Gmbh Elektromagnet
IT201800003064A1 (it) * 2018-02-27 2019-08-27 Elbi Int Spa Pompa a vibrazione con struttura migliorata.
IT201900025225A1 (it) * 2019-12-23 2021-06-23 A R S Elettromeccanica Srl Pistone mobile per pompe a vibrazione

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3348489A (en) * 1965-01-21 1967-10-24 Meyer Ernst Induction pump
FR2233877A5 (en) * 1973-06-15 1975-01-10 Stasse Roland Electromagnetically actuated lubricating pump - piston and cylinder cooled by circulation of excess lubricant
PT65854B (en) * 1975-11-21 1978-05-15 Ignacio Perez Portabella Electro-magnetic pump
JPS54117911A (en) * 1978-03-04 1979-09-13 Nippon Kontorooru Kougiyou Kk Automatic pressure governing system electromagnetic pump
IT1130947B (it) * 1980-03-10 1986-06-18 De Dionigi Manlio Perfezionamenti alle pompe elettromagnetiche alternative in particolare per fluidi non viscosi

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005048765A1 (de) * 2005-10-10 2007-04-12 Aweco Appliance Systems Gmbh & Co. Kg Schwingankerpumpe
US8733230B2 (en) 2008-05-28 2014-05-27 Nestec S.A. Pump for liquid beverage preparation devices
DE102010044775A1 (de) 2009-09-09 2011-03-10 Rudolf Lonski Schwingankerpumpe
WO2011029577A1 (fr) 2009-09-09 2011-03-17 Rudolf Lonski Pompe à armature oscillante
CN102597517A (zh) * 2009-09-09 2012-07-18 租赁联盟哈拉德施罗特和西斯科股份公司 往复运动泵
DE202011050598U1 (de) 2011-07-01 2012-10-09 Wik Far East Ltd. Flüssigkeitspumpe
DE202011050599U1 (de) 2011-07-01 2012-10-09 Wik Far East Ltd. Flüssigkeitspumpe
WO2013004620A1 (fr) 2011-07-01 2013-01-10 Wik Far East Ltd. Pompe à piston alternatif à entraînement magnétique
DE202011050601U1 (de) 2011-07-01 2012-10-09 Wik Far East Ltd. Flüssigkeitspumpe
DE102013107482A1 (de) * 2013-07-15 2015-01-15 Sysko AG Systeme und Komponenten Kolben für eine Schwingankerpumpe
WO2015007429A1 (fr) * 2013-07-15 2015-01-22 Sysko Ag Piston pour pompe à armature oscillante
EP4015823A1 (fr) 2020-12-16 2022-06-22 Aerzener Maschinenfabrik GmbH Unité de moteur à piston rotatif pourvu de dispositif d'alimentation en lubrifiant
DE102022116097A1 (de) 2022-06-28 2023-12-28 Sysko AG Systeme & Komponenten Schwingankerpumpe

Also Published As

Publication number Publication date
GB8709082D0 (en) 1987-05-20
EP0288216A1 (fr) 1988-10-26
ES2030856T3 (es) 1992-11-16
DE3870017D1 (de) 1992-05-21

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