EP2167820B1 - Pompe à membrane - Google Patents

Pompe à membrane Download PDF

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Publication number
EP2167820B1
EP2167820B1 EP08716538.7A EP08716538A EP2167820B1 EP 2167820 B1 EP2167820 B1 EP 2167820B1 EP 08716538 A EP08716538 A EP 08716538A EP 2167820 B1 EP2167820 B1 EP 2167820B1
Authority
EP
European Patent Office
Prior art keywords
elastic
ring
diaphragm
diaphragm pump
armature
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.)
Active
Application number
EP08716538.7A
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German (de)
English (en)
Other versions
EP2167820A1 (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
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Application filed by KNF Flodos AG filed Critical KNF Flodos AG
Publication of EP2167820A1 publication Critical patent/EP2167820A1/fr
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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
    • 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

  • the invention relates to a diaphragm pump, comprising a diaphragm, a lifting magnet with a movable armature as a drive element for the diaphragm and a stop element for stroke adjustment for the drive element, wherein between the drive element and stop element at least one elastic damper is provided.
  • a diaphragm pump with magnet armature drive is already known, arranged the inlet and outlet of the pump chamber in the flow direction opposite and are completed by internal valves.
  • the magnet chamber with the driven diaphragm is perpendicular to the flow direction, wherein the diaphragm is a boundary of the pump chamber.
  • another chamber connects, in which a spacer and the armature are arranged.
  • the armature divides the chamber into two regions which are connected by at least one longitudinal channel within the magnet armature. Inside the chamber is oil for lubrication of the drive.
  • the spacer connects the armature with the membrane and has In addition, a spring which exerts a restoring force on the armature.
  • an elastic buffer is arranged as a stop on the housing.
  • the elastic buffer which is formed by an elastic O-ring partially limits a lying between the armature and the housing volume communicating via the longitudinal channel within the armature with a arranged on the opposite side of the magnet armature volume, wherein in this communicating areas on the side facing away from the pump chamber of the membrane is provided for lubricating the magnet armature serving as a drive oil.
  • Comparable diaphragm pumps are known from the prior art, for example from the U.S. Patent 6,568,926 B1 or the US 4,143,998 and are used many times. 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,
  • the elastic damper has at least one compression chamber which is enclosed and formed by at least one elastic boundary wall and by at least one rigid boundary wall of the drive and / or the stop element.
  • the diaphragm pump according to the invention between the drive element and stop element at least one elastic damper is provided, which has at least one compression chamber, which is surrounded by at least one elastic boundary wall and by at least one rigid boundary wall of the drive and / or the stop element and is formed.
  • the elastic boundary wall is formed by a ring made of elastic material.
  • a compression chamber which provides additional braking the movement of the drive member.
  • the compression of the air in the compression chamber causes a progressive damping characteristic, so that with decreasing distance, the damping is always larger.
  • the damper with the compression chamber thus acts as a gas spring.
  • 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 is inserted into a groove or on a shoulder of the drive and / or the stop element.
  • 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 a whole designated 1 diaphragm pump.
  • 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.
  • annular gap 17 is formed, so that the armature 8 is smoothly guided in the sleeve 4.
  • the 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 for a better overview in Fig. 1a shown enlarged.
  • 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 membrane 11, together with the membrane cover 12, limits the membrane space 37 and thus the actual working volume.
  • 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 is provided between the armature 8 and the stop element 9, 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 31a, as shown in FIG Fig. 2 is indicated by dashed lines. 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. As in Fig.
  • a compression chamber 26 which includes an air volume.
  • the compression of the air in addition to the elastic deformation of the ring 15 a damping effect is achieved, which is the greater the closer the two boundary walls approach.
  • 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. At top dead center, the movement of the armature 8 is braked and damped by the elastic membrane 11.
  • a damping according to the principle of the compression chamber can also be provided, as in 1a is recognizable.
  • 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. Unlike the in Fig. 2 shown embodiment, the elastic ring 15 in a groove 31 in the boundary end wall of the stop member 9 is inserted. As a result, the ring 15 is exposed in operation no acceleration forces and thus the seat secured in the groove 31. For venting the working gap 28, 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 Fig. 4 Another variant of the elastic damper 36 is shown in FIG Fig. 4 shown.
  • 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 a further embodiment of the elastic damper 36 is shown, in which the front-side boundary wall of the armature 8 protrudes beyond the groove 31 located in the elastic ring 15.
  • the ring 15 is acted upon annular flange 24 is provided, which limits the compression chamber in contact with the ring 15. Since the ring 15 is arranged sunk completely in the groove 31, the ring 15 is held particularly secure.
  • the elastic damper 36 is essentially formed by a cup-shaped molded part, which has a plate 25 with outer rim integrally molded ring 15b and consists of elastic material.
  • the cup-shaped molded part is inserted into a recess 31 b of the armature 8. It is also possible, only the plate-shaped part 25 without integrally formed elastic ring 15 b, but in conjunction with a recess 16, such as in Fig. 2 shown, or even in the plate 25 itself, use.
  • a plurality of compression chambers 26 may be provided if appropriate space available.
  • a central ring 15 as in FIG. 1 shown, several, for example, three rings 15 may be arranged side by side on the lower end face of the armature 8 and accordingly form three compression chambers in 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)

Claims (9)

  1. Pompe à membrane (1) présentant une membrane (11), un aimant de levage avec un induit magnétique mobile (8) comme élément d'entraînement pour la membrane (11) et un élément de butée (9) pour le réglage de la course pour l'élément d'entraînement (8), caractérisée en ce qu'il est prévu entre l'élément d'entraînement (8) et l'élément de butée (9) au moins un amortisseur élastique (36), qui 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).
  2. Pompe à membrane selon la revendication 1, caractérisée en ce que la paroi de limitation élastique est formée par un anneau élastique (15), par exemple un joint torique.
  3. Pompe à membrane selon l'une des revendications 1 à 2, caractérisée en ce qu'au moins une paroi de limitation rigide de l'élément d'entraînement (8) et/ou de l'élément de butée (9) présente une rainure (31), dans laquelle l'anneau élastique (15) est inséré, ou un épaulement (31a), sur lequel l'anneau élastique (15) est posé.
  4. Pompe à membrane selon la revendication 3, caractérisée en ce que l'anneau élastique (15) inséré dans la rainure (31) ou posé sur l'épaulement (31a) dépasse au-delà de la paroi de limitation rigide.
  5. Pompe à membrane selon la revendication 3, caractérisée en ce que la paroi de limitation rigide se termine en alignement avec l'anneau élastique (15) inséré dans la rainure (31) ou posé sur l'épaulement (31 a) ou le dépasse et en ce qu'une bride annulaire périphérique (24) agissant sur l'anneau (15) en position de butée est disposée sur la paroi de limitation rigide opposée.
  6. Pompe à membrane selon l'une quelconque des revendications 2 à 4, caractérisée en ce que l'anneau élastique (15b) est formé sur une plaque en particulier élastique (25) et il forme de préférence d'une seule pièce avec la plaque (25) une pièce façonnée en forme de ventouse.
  7. Pompe à membrane selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'au moins une paroi de limitation rigide de l'élément d'entraînement et/ou de butée présente un évidement (16) dans la région intérieure de l'anneau.
  8. Pompe à membrane selon l'une quelconque des revendications 1 à 7, caractérisée en ce qu'il est prévu une douille (4) entourant l'induit (8) qui présente une ouverture d'aération (27) pour l'aération de l'entrefer de travail (28) se trouvant entre l'induit (8) et l'élément de butée (9).
  9. Pompe à membrane selon l'une quelconque des revendications 1 à 8, caractérisée en ce qu'il est prévu au moins une chambre de compression (34) dans la région de la chambre de membrane (37) et en ce que des canaux de raccordement de soupape (39) débouchant dans la chambre de membrane (37) présentent des bords d'étanchéité (23, 23a) pénétrant dans la chambre de membrane (37).
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 EP2167820A1 (fr) 2010-03-31
EP2167820B1 true 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)

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EP4115985A1 (fr) 2008-10-22 2023-01-11 Graco Minnesota Inc. Pulvérisateur sans air portable
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
CN112368082B (zh) 2018-04-10 2022-11-08 固瑞克明尼苏达有限公司 用于油漆和其他涂料的手持式无气喷涂器
EP3976270A1 (fr) 2019-05-31 2022-04-06 Graco Minnesota Inc. Pulvérisateur de fluide portatif
AU2021246059A1 (en) 2020-03-31 2022-10-06 Graco Minnesota Inc. Electrically operated displacement pump
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

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4143998A (en) 1975-06-04 1979-03-13 Walbro Corporation Fluid pump
FR2485108A1 (fr) 1980-06-23 1981-12-24 Guinard Pompes Pompe a piston
EP1757809A1 (fr) 2005-08-22 2007-02-28 ProMinent Dosiertechnik GmbH Pompe doseuse électromagnétique avec réglage du mouvement et de la vitesse

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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
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

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Publication number Priority date Publication date Assignee Title
US4143998A (en) 1975-06-04 1979-03-13 Walbro Corporation Fluid pump
FR2485108A1 (fr) 1980-06-23 1981-12-24 Guinard Pompes Pompe a piston
EP1757809A1 (fr) 2005-08-22 2007-02-28 ProMinent Dosiertechnik GmbH Pompe doseuse électromagnétique avec réglage du mouvement et de la vitesse

Non-Patent Citations (2)

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Title
"Betriebsanleitung Dosierpumpe Prominent(R) gamma G75b", July 1999 (1999-07-01), pages 84, XP055626034
"ProMinent® gamma/ 5 Bedienungsanleitung", AUSZUG AUS DER BETRIEBSANLEITUNG GAMMA/5, June 1991 (1991-06-01), pages FP - 55, XP055626038

Also Published As

Publication number Publication date
EP2167820A1 (fr) 2010-03-31
US8366414B2 (en) 2013-02-05
DE102007030311A1 (de) 2009-01-02
US20100196176A1 (en) 2010-08-05
JP5091315B2 (ja) 2012-12-05
DE102007030311B4 (de) 2013-02-07
WO2009003540A1 (fr) 2009-01-08
JP2010531945A (ja) 2010-09-30

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