EP2167820A1 - Pompe à membrane - Google Patents

Pompe à membrane

Info

Publication number
EP2167820A1
EP2167820A1 EP08716538A EP08716538A EP2167820A1 EP 2167820 A1 EP2167820 A1 EP 2167820A1 EP 08716538 A EP08716538 A EP 08716538A EP 08716538 A EP08716538 A EP 08716538A EP 2167820 A1 EP2167820 A1 EP 2167820A1
Authority
EP
European Patent Office
Prior art keywords
elastic
boundary wall
ring
diaphragm pump
drive
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
Application number
EP08716538A
Other languages
German (de)
English (en)
Other versions
EP2167820B1 (fr
Inventor
Stephan Kaufmann
Christian Kissling
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.)
KNF Flodos AG
Original Assignee
KNF Flodos AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39577705&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2167820(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by KNF Flodos AG filed Critical KNF Flodos AG
Publication of EP2167820A1 publication Critical patent/EP2167820A1/fr
Application granted granted Critical
Publication of EP2167820B1 publication Critical patent/EP2167820B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • F04B43/04—Pumps having electric drive
    • 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
    • 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
    • F04B17/042—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow
    • F04B17/044—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the solenoid motor being separated from the fluid flow using solenoids directly actuating the piston
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/14—Adjusting abutments located in the path of reciprocation

Definitions

  • Dxe invention relates to a diaphragm pump having a membrane, a solenoid with a movable armature as a drive element for the membrane and a stop element for Hubeinsannon for the drive element.
  • Such diaphragm pumps are known from the prior art, for example from US Pat. No. 6,568,926 B1 or US Pat. No. 4,143,998 and are widely used. Due to the design, the noise level is quite high in such pumps.
  • the object of the invention is to provide a diaphragm pump of the type mentioned, whose operating noise is significantly reduced.
  • At least one elastic damper is provided, which has at least one compression chamber which is enclosed and formed by at least one elastic boundary wall and at least one rigid boundary wall of the drive and / or the stop element.
  • the elastic boundary wall is formed by a ring of elastic material.
  • the elastic damper is dimensioned so that it comes to a contact between the drive and the stop member at each stroke, which performs the drive element.
  • the drive element performs a defined stroke and the pump promotes a precisely defined volume, which remains constant even in the event of failure of the damper.
  • the elastic ring m is a groove or used on a shoulder of the drive and / or the stop member.
  • the assembly of the ring is simplified and prevents in operation that the ring slips or is damaged.
  • the ring protrudes beyond the respective boundary wall, wherein the suppression of the attenuation can be influenced.
  • a recess is arranged in at least one rigid boundary wall of the drive and / or stop element in the inner region of the elastic ring, which increases the air volume of the compression chamber and thus also influences the damping characteristic.
  • the recess effectively enlarges the compression volume in a small area, so that the working gap can be chosen smaller between the drive and stop element, without having to do without the additional damping. Due to the smaller distance, the resistance to the magnetic flux, which is formed by the working gap between the drive and stop element, reduced and the pump can thereby build up at a reduced stroke, a larger pressure.
  • a further embodiment of the invention with improved magnetic flux provides that the rigid boundary wall is flush with the groove inserted or the patch on the shoulder elastic ring or protrudes and that on the opposite rigid boundary wall a ring in stop position beauf anyder circumferential annular flange is arranged.
  • the elastic ring is not limited to a circular shape. Rather, any closed forms are possible as long as a volume can be formed inside by covering the flat sides.
  • FIG. 1 is a cross-sectional view of a diaphragm pump according to the invention
  • FIG. 1a is a detailed view of the pump part of a diaphragm pump according to the invention
  • Fig. 2 is an enlarged view of the diaphragm pump in the region of the elastic damper
  • Fig. 3-7 representations of other embodiments of elastic dampers.
  • a designated as a whole with 1 diaphragm pump is shown.
  • the pump 1 essentially has a drive part 2 and a pump part 3.
  • the drive part 2 has a solenoid with a magnetic coil 5, which is held by a return plate 6 in the drive housing 7 and forms the stator of the drive.
  • an armature 8 is guided back and forth as a drive element, which is connected via a drive sleeve 10 to the diaphragm 11.
  • the armature 8 is acted upon in the working stroke direction (arrow Pf 1) by a compression spring 30, so that the armature 8 is moved with the diaphragm 11 against the diaphragm space 37.
  • the armature 8 is moved in the opposite direction to the direction of arrow Pf 1 in the suction stroke direction.
  • the membrane 11 facing away from the end face of the armature 8 is facing a stop element 9 made of ferromagnetic material, which is rotatably connected to a sleeve 4.
  • the sleeve 4 extends beyond the stop element 9, wherein within the sleeve 4, the armature 8 is guided.
  • the sleeve 4 is screwed by a thread 14 to the pump housing 29.
  • the compression spring 30 is supported.
  • the stop member 9 By turning the stop member 9 in the thread 14, the axial position of the stop member 9 can be changed and thus the working gap 28 between the armature 8 and stop element 9.
  • the working gap 28 corresponds to the maximum stroke of the armature 8 and thereby determines the delivery volume per stroke.
  • the stop member 9 is tensioned at its outer end portion by a plate spring 18 to the outside.
  • annular gap 17 is formed, so that the armature 8 is smoothly guided in the sleeve 4.
  • annular gap 17 forms a venting channel, through which the air, which displaces the armature 8 when approaching the stop element 9 from the working gap 28, can escape.
  • the pump part 3 of the diaphragm pump 1 is shown enlarged for better clarity m Fig. 1a.
  • the annular membrane 11 rests on its outer diameter on the edge of the pump housing 29 and is clamped there by the membrane cover 12. On the inner edge of the diaphragm 11 engages a suspension 32, which is pulled by the clamping screw 33 against the diaphragm cover 12 and thus clamps the membrane 11.
  • the inlet 22 and outlet valves 19 are located in the membrane cover 12 and the pump cover 13 resting thereon and are respectively connected to the membrane space 37 and on the other hand to the inlet 21 and outlet ports 20 of the pump.
  • the armature 8 with the membrane 11 performs an up and down movement, which is bounded by the membrane cover 12 on the one hand and by the stop element 9 on the other.
  • an elastic damper 36 which has an elastic ring 15 which is inserted into an annular groove 31 in the boundary wall forming a lower end wall of the armature 8.
  • the elastic ring 15 may also be placed on a shoulder 31 a, as indicated by dashed lines in Fig. 2.
  • the downward movement of the armature 8 during energization of the magnetic coil 5 is attenuated upon contact of the elastic ring 15 with the boundary wall of the stop element 9.
  • a compression chamber 26 which includes an air volume.
  • the remaining outer working gap 28 is vented through the annular gap 17 and therefore does not affect the damping. This ensures a defined, largely independent of the ambient conditions damping.
  • a damping as can be seen in Fig.1a.
  • the membrane cover 12 at the mouth openings of the valve connecting channels 39 circumferential sealing edges 23, 23a are arranged, which protrude into the diaphragm chamber 37.
  • the membrane chamber 37 which is then closed to the outside, forms a compression chamber 34 and dampens the stroke movement near top dead center.
  • FIG. 3 another embodiment of the elastic damper 36 is shown.
  • the elastic ring 15 in a groove 31 in the boundary end wall of the stop member 9 is inserted.
  • the ring 15 is exposed in operation no acceleration forces and thus the seat secured in the groove 31.
  • a lateral opening 27 is arranged in this embodiment in the sleeve 4, so that the displaced by the armature 8 air can escape faster and does not have a braking effect on the movement of the armature.
  • FIG. 1 Another variant of the elastic damper 36 is shown in FIG.
  • the elastic ring 15a is designed as a flat ring.
  • Such flat rings may for example be stamped or cut from an elastic sheet material.
  • the ring can be easily produced in any dimensions, so that a finer tuning of the damping is possible. Due to the larger, flat contact surface, the damping is also much harder and allows for even short paths great damping effects. Thereby, the damping can be done in a very short way and accordingly the working gap 28 can be kept small for high discharge pressures.
  • FIG. 6 shows a further embodiment of the elastic damper 36, in which the front-side boundary wall of the armature 8 projects beyond the elastic ring 15 located in the groove 31.
  • a ring flange 15 which acts on the ring 15 in contact position is provided which, when in contact with the ring 15, delimits the compression chamber. Since the ring 15 is arranged sunk completely in the groove 31, the ring 15 is held particularly secure.
  • the elastic damper 36 is formed substantially by a cup-shaped molding having a plate 25 with outside edge integrally formed ring 15b and consists of elastic material.
  • the cup-shaped molded part is inserted m a recess 31 b of the armature 8.
  • a plurality of compression chambers 26 may be provided if appropriate space available.
  • a central ring 15, as shown in Figure 1 several, for example, three rings 15 on the lower end face of the armature 8 are arranged side by side and accordingly form three compression chambers m connection with the end face of the stop element 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe à membrane (1) présentant une membrane (11), un aimant de levage avec un induit magnétique mobile (8) servant d'élément d'entraînement pour la membrane (11) et un élément de butée (9) pour l'ajustement de la course de l'élément d'entraînement (8). La pompe à membrane selon l'invention est caractérisée en ce qu'au moins un amortisseur élastique (36) est disposé entre l'élément d'entraînement (8) et l'élément de butée (9), et présente au moins une chambre de compression (26) qui est entourée et formée par au moins une paroi de limitation élastique et par au moins une paroi de limitation rigide de l'élément d'entraînement (8) et/ou de l'élément de butée (9).
EP08716538.7A 2007-06-29 2008-03-14 Pompe à membrane Active EP2167820B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007030311A DE102007030311B4 (de) 2007-06-29 2007-06-29 Membranpumpe
PCT/EP2008/002043 WO2009003540A1 (fr) 2007-06-29 2008-03-14 Pompe à membrane

Publications (2)

Publication Number Publication Date
EP2167820A1 true EP2167820A1 (fr) 2010-03-31
EP2167820B1 EP2167820B1 (fr) 2016-09-14

Family

ID=39577705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08716538.7A Active EP2167820B1 (fr) 2007-06-29 2008-03-14 Pompe à membrane

Country Status (5)

Country Link
US (1) US8366414B2 (fr)
EP (1) EP2167820B1 (fr)
JP (1) JP5091315B2 (fr)
DE (1) DE102007030311B4 (fr)
WO (1) WO2009003540A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2009308070B2 (en) 2008-10-22 2015-08-20 Graco Minnesota Inc. Portable airless sprayer
DE102011075303A1 (de) * 2011-05-05 2012-11-08 Robert Bosch Gmbh Elektromagnetische Betätigungseinrichtung, insbesondere zum Betreiben einer Pumpe
DE102012000676A1 (de) * 2012-01-17 2013-07-18 Knf Flodos Ag Verdrängerpumpe
DE102012020274B4 (de) * 2012-10-17 2018-10-31 Thomas Magnete Gmbh Elektromagnetisch angetriebene Hubkolbenpumpe mit Dämpfungselement
US9360004B2 (en) * 2012-11-15 2016-06-07 Shenzhen Mindray Bio-Medical Electronics Co., Ltd. Progressive pump force regulation
PL3567251T3 (pl) * 2014-02-07 2021-07-19 Graco Minnesota Inc. Układ napędowy do bezpulsacyjnej pompy wyporowej
US9855186B2 (en) 2014-05-14 2018-01-02 Aytu Women's Health, Llc Devices and methods for promoting female sexual wellness and satisfaction
US9490681B1 (en) 2015-09-18 2016-11-08 Ingersoll-Rand Company Pulsed air to electric generator
DE102016008783A1 (de) * 2016-07-22 2018-01-25 Knf Flodos Ag Oszillierende Verdrängerpumpe mit elektrodynamischem Antrieb und Verfahren zu deren Betrieb
US11007545B2 (en) 2017-01-15 2021-05-18 Graco Minnesota Inc. Handheld airless paint sprayer repair
US11022106B2 (en) 2018-01-09 2021-06-01 Graco Minnesota Inc. High-pressure positive displacement plunger pump
EP3774069A1 (fr) 2018-04-10 2021-02-17 Graco Minnesota Inc. Pulvérisateur sans air portatif pour peintures et autres revêtements
US20220234062A1 (en) 2019-05-31 2022-07-28 Graco Minnesota Inc. Handheld fluid sprayer
CN115362316A (zh) 2020-03-31 2022-11-18 固瑞克明尼苏达有限公司 电动操作的往复式泵
US10968903B1 (en) 2020-06-04 2021-04-06 Graco Minnesota Inc. Handheld sanitary fluid sprayer having resilient polymer pump cylinder
US10926275B1 (en) 2020-06-25 2021-02-23 Graco Minnesota Inc. Electrostatic handheld sprayer
DE102021125005A1 (de) 2021-09-28 2023-03-30 Lewa Gmbh Membranpumpe mit hydraulischem Antrieb
DE102022115955A1 (de) 2022-06-27 2023-12-28 Prominent Gmbh Dosierpumpe mit Hubeinstellung
DE102022130868A1 (de) 2022-11-22 2024-05-23 Prominent Gmbh Membranpumpe mit verbesserter Membrananbringung

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Publication number Priority date Publication date Assignee Title
CA1046845A (fr) 1975-06-04 1979-01-23 Walbro Corporation Pompe a membrane pour carburant
FR2485108A1 (fr) * 1980-06-23 1981-12-24 Guinard Pompes Pompe a piston
JPS60174212U (ja) * 1984-04-26 1985-11-19 東北沖電気株式会社 ソレノイド
JPS6149416U (fr) * 1984-09-01 1986-04-03
US4607627A (en) * 1984-09-10 1986-08-26 Teledyne Industries, Inc. Solenoid-actuated hygienic appliance
GB8708417D0 (en) 1987-04-08 1987-05-13 Eaton Sa Monaco Electric pump
JPH0390496U (fr) * 1989-12-28 1991-09-13
US5284425A (en) * 1992-11-18 1994-02-08 The Lee Company Fluid metering pump
US5467961A (en) * 1993-05-06 1995-11-21 Firma Carl Freudenberg Electromagnetically actuated valve
DE19837973C1 (de) * 1998-08-21 2000-01-20 Atotech Deutschland Gmbh Vorrichtung zum partiellen elektrochemischen Behandeln von stabförmigem Behandlungsgut
US6568926B1 (en) * 2001-10-31 2003-05-27 The Gorman-Rupp Company Fluid metering pump
US6758657B1 (en) * 2002-06-20 2004-07-06 The Gorman-Rupp Company Electromagnetically driven diaphragm pump
US20060261527A1 (en) * 2005-05-17 2006-11-23 Danniel Lange Gas spring assembly with bumper
DE102005039772A1 (de) 2005-08-22 2007-03-08 Prominent Dosiertechnik Gmbh Magnetdosierpumpe
JP2007281192A (ja) * 2006-04-06 2007-10-25 Shinano Kenshi Co Ltd ソレノイドおよびこれを用いたポンプ

Non-Patent Citations (1)

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Title
See references of WO2009003540A1 *

Also Published As

Publication number Publication date
DE102007030311B4 (de) 2013-02-07
EP2167820B1 (fr) 2016-09-14
US20100196176A1 (en) 2010-08-05
JP2010531945A (ja) 2010-09-30
JP5091315B2 (ja) 2012-12-05
WO2009003540A1 (fr) 2009-01-08
DE102007030311A1 (de) 2009-01-02
US8366414B2 (en) 2013-02-05

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