EP2313655A1 - Membranpumpe mit leistungsstärkerer faltenmembran - Google Patents

Membranpumpe mit leistungsstärkerer faltenmembran

Info

Publication number
EP2313655A1
EP2313655A1 EP09802554A EP09802554A EP2313655A1 EP 2313655 A1 EP2313655 A1 EP 2313655A1 EP 09802554 A EP09802554 A EP 09802554A EP 09802554 A EP09802554 A EP 09802554A EP 2313655 A1 EP2313655 A1 EP 2313655A1
Authority
EP
European Patent Office
Prior art keywords
pump
actuator
membrane
diaphragm
support
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
EP09802554A
Other languages
English (en)
French (fr)
Other versions
EP2313655B1 (de
Inventor
Jean Baptiste Drevet
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.)
AMS R&D Sas
Original Assignee
AMS R&D Sas
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 AMS R&D Sas filed Critical AMS R&D Sas
Publication of EP2313655A1 publication Critical patent/EP2313655A1/de
Application granted granted Critical
Publication of EP2313655B1 publication Critical patent/EP2313655B1/de
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
    • F04B43/0009—Special features
    • F04B43/0018—Special features the periphery of the flexible member being not fixed to the pump-casing, but acting as a valve
    • 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
    • F04B43/06—Pumps having fluid 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
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/08—Machines, pumps, or pumping installations having flexible working members having tubular flexible members
    • F04B43/09—Pumps having electric drive

Definitions

  • the present invention relates to an undulating diaphragm pump with improved efficiency.
  • Document FR2744769 discloses, for example, undulating diaphragm pumps mounted for undulating between two flanges under the action of at least one linear electromagnetic actuator in order to transfer fluid from an inlet of the pump to an outlet of the pump between the membrane and the flanges.
  • the membrane is fixed on a rigid membrane support.
  • the movable portion of the actuator is generally hitched directly to the membrane support and causes a transverse oscillation of the outer edge of the membrane which in turn causes undulations of the membrane perpendicular to its plane which have the effect of propelling the fluid of the inlet to the outlet of the pump.
  • the actuator (s) are advantageously chosen from the type with moving magnets or else from the reluctant type.
  • the masses set in motion by this type of actuator are relatively important because they include, for example, the magnets, the magnet supports, the connecting parts to the membrane support, the suspension springs.
  • the mass value of the moving parts of the actuator affects the coupling of the undulating diaphragm with the fluid, the efficiency of the diaphragm movement and the efficiency of the pump head, limits the possible operating frequency of the pump. the actuator, and leads to noises and vibrations that can be troublesome.
  • the subject of the invention is an undulating diaphragm pump with improved efficiency, which does not have the abovementioned disadvantages.
  • an undulating diaphragm pump mounted on a support for undulating between two flanges under the action of at least one electromagnetic actuator in order to transfer fluid from an inlet of the pump to an output of the pump.
  • the pump comprises adaptation means connecting the membrane support and a moving part of the actuator for reducing the stroke of the moving part of the actuator so that it is smaller than the stroke of the membrane support.
  • Such a reduction in the stroke of the moving part of the actuator makes it possible to improve the coupling of the undulating membrane with the fluid, the efficiency of the movement of the membrane by optimizing the reaction force thereof, and therefore of improve the propulsion efficiency.
  • the actuator makes it possible to increase the frequency of operation, to reduce the mechanical losses related to friction and viscous friction.
  • the decrease in stroke helps to reduce the vibrations generated by the actuator and suffered by the pump.
  • This reduction also makes it possible to increase the force / mass ratio, which makes it possible to reduce the kinetic losses related to the movement of the masses, and therefore to increase the overall efficiency of the pump.
  • the adaptation means comprise at least one lever whose one end is articulated on the membrane support and the other end is articulated on a fixed point, the movable part of the actuator. being hitched to the lever so that its stroke is smaller than the stroke of the membrane support.
  • FIG. 1 is a schematic sectional view of an exemplary embodiment of a pump according to a first implementation of the invention
  • FIG. 2 is a sectional view of a first exemplary embodiment of a pump according to a second principle of implementation of the invention
  • FIG. 2a is a sectional view of a second embodiment of a pump according to the second embodiment of the invention.
  • FIG. 3 is a schematic sectional view of a pump according to a third embodiment of the invention.
  • FIG. 4 is a schematic sectional view of a pump according to a fourth principle of implementation of the invention.
  • the illustrated pump comprises two generally discoidal flanges 1 between which extends an undulating membrane 2 also discoidal. This is fixed by its outer edge to a rigid membrane support 3 which is imposed oscillations that cause a ripple of the membrane 2 which forces the fluid to flow from an inlet 4 of the pump to an outlet 5.
  • the oscillations of the support 3 of the membrane 2 are generated by an electromechanical actuator 10 according to the following provisions.
  • the pump comprises adaptation means, in this case here two levers 6 which are each articulated firstly to a fixed point 7, and secondly to the membrane support 3 of the membrane.
  • the actuator 10 comprises two mobile parts 11 which are here each modeled by a movable mass 12 associated with a spring 13 coupled to a fixed point and for example to a portion integral with the flanges.
  • the spring 13 has a stiffness such that the assembly formed by the moving mass and the spring has a resonance frequency close to an operating frequency of the pump.
  • the mobile mass 12 is coupled to the lever 6 at a point 14 located here between the two ends of the lever 6.
  • the electromagnetic excitation of the mobile mass 12 by an associated fixed coil 15 which causes an oscillation of the mobile mass 12 according to a direction Z perpendicular to the median plane of the membrane 2, which causes an oscillation of the membrane support 3 of the membrane, and hence the undulations of the membrane 2 between the flanges 1 which result from the propagation of a progressive wave whose membrane is the support.
  • the mobile mass 12 carries permanent magnets.
  • L is the length of the lever (counted parallel to the mean plane of the membrane) and the distance, counted parallel to L, between the fixed end of the lever 6 and the coupling point of the mobile mass 12 of the actuator 10 on the lever. It can be seen here that the distance d is less than the distance L, and therefore that the stroke of the actuator 10, which is in the ratio d / L with the displacement of the membrane support 3 of the membrane, is therefore smaller than this displacement. In addition, everything happens as if the inertial mass of value M of the membrane support was increased by an amount dm / L where m is the value of the moving mass 12.
  • the inertial mass reported is therefore lower than the inertial mass reported in a known pump in which the actuator is coupled directly to the membrane support, which would have been equal to m.
  • FIG. 2 illustrates an example of practical implementation of this principle.
  • the membrane support 3 is actuated at two diametrically opposite points.
  • the two levers 6 ' are here formed in a single sheet 20 cut and folded form. More specifically, the plate 20 comprises a central portion 21 formed of flexible U-shaped return spring which is fixed to the body of the pump. Then the sheet 20 is extended by two lever arms 6 'whose edges 22 are folded to give a high flexural rigidity to the arms. The arms terminate with connecting portions 23 to the membrane support. Each of the arms is attacked at points 14, substantially in the middle, by an actuator. Thus, the same piece forms both lever and return spring.
  • the stiffness of this spring portion can be set to a value such as associated with the value of the moving mass, the resonance frequency of this oscillator is close to the desired operating frequency for the pump.
  • the lever arms 6 'carry permanent magnets 45 subjected to the action of the coil 15, so that the weighted arms of the magnets themselves form the moving mass of the actuator excited by the coil.
  • the magnets 45 are carried by the arms away from the membrane support, preferably between the point of articulation of the lever and the coupling point of the lever to the membrane support, so that the stroke of this moving part is effectively more small as the displacement of the membrane support.
  • the adaptation means comprise a connection or suspension spring 25 interposed between the membrane support 3 and the mobile mass 12 of the actuator 10.
  • the suspension 25 makes it possible to reduce the stroke of the mobile mass 12 of the actuator, for a given stroke of the membrane support 3.
  • the spring 13 here consists of an elastically deformable bent blade.
  • the pump comprises adaptation means consisting of a pneumatic or hydraulic stroke adapter 30.
  • the mobile mass 12 here affects an annular shape and slides alternately.
  • the travel adapter 30 comprises a membrane A and a membrane B which define> a sealed chamber 32 filled with gas or liquid, as the case may be.
  • Membrane A is coupled to the moving mass 12, while the membrane B is coupled to the membrane support 3 via an arm 34.
  • the membrane A has an edge A1 which is pinched, and has a rigid bottom A2 forming a piston coupled to the moving mass 12 and connected to the edge A1 by a bellows A3.
  • the membrane B it comprises a fixed edge B1 connected to a central sleeve B3 coupled to the arm 34, and connected to the edge B1 by a bellows B2.
  • the surface of the membrane A is greater than the surface of the membrane B.
  • the moving mass 12 moves by a given stroke, it imposes on the sleeve B3 of the membrane B a greater displacement than the stroke of the mobile mass 12. It follows that the mobile mass 12 has a displacement smaller than that of the membrane support 3.
  • the invention applies to any type of actuator and in particular the linear or rotary actuators, with angular displacement ...

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
EP09802554.7A 2008-08-01 2009-07-23 Membranpumpe mit leistungsstärkerer faltenmembran Active EP2313655B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0804390A FR2934652B1 (fr) 2008-08-01 2008-08-01 Pompe a membrane ondulante de rendement ameliore.
PCT/FR2009/000915 WO2010012887A1 (fr) 2008-08-01 2009-07-23 Pompe a membrane ondulante de rendement ameliore

Publications (2)

Publication Number Publication Date
EP2313655A1 true EP2313655A1 (de) 2011-04-27
EP2313655B1 EP2313655B1 (de) 2017-04-12

Family

ID=40383753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09802554.7A Active EP2313655B1 (de) 2008-08-01 2009-07-23 Membranpumpe mit leistungsstärkerer faltenmembran

Country Status (9)

Country Link
US (1) US8714944B2 (de)
EP (1) EP2313655B1 (de)
JP (1) JP5291193B2 (de)
CN (1) CN102112743B (de)
CA (1) CA2767332C (de)
DK (1) DK2313655T3 (de)
ES (1) ES2632173T3 (de)
FR (1) FR2934652B1 (de)
WO (1) WO2010012887A1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0224986D0 (en) 2002-10-28 2002-12-04 Smith & Nephew Apparatus
GB0325129D0 (en) 2003-10-28 2003-12-03 Smith & Nephew Apparatus in situ
CA2604623C (en) 2006-09-28 2018-10-30 Tyco Healthcare Group Lp Portable wound therapy system
HUE041864T2 (hu) 2007-11-21 2019-06-28 Smith & Nephew Sebkötözõ
GB201015656D0 (en) 2010-09-20 2010-10-27 Smith & Nephew Pressure control apparatus
US9084845B2 (en) 2011-11-02 2015-07-21 Smith & Nephew Plc Reduced pressure therapy apparatuses and methods of using same
CN104507513B (zh) 2012-03-20 2017-04-12 史密夫及内修公开有限公司 基于动态占空比阈值确定的减压治疗系统的控制操作
US9427505B2 (en) 2012-05-15 2016-08-30 Smith & Nephew Plc Negative pressure wound therapy apparatus
CN104214079B (zh) * 2013-06-05 2018-04-27 北京谊安医疗系统股份有限公司 空气压缩机
FR3016811A1 (fr) * 2014-01-24 2015-07-31 Saint Gobain Performance Plast Recipient-melangeur
FR3026091B1 (fr) * 2014-09-24 2023-10-06 Zodiac Aerotechnics Procede et systeme de circulation de carburant dans un aeronef
WO2016103035A2 (en) 2014-12-22 2016-06-30 Smith & Nephew Plc Negative pressure wound therapy apparatus and methods
US10166319B2 (en) 2016-04-11 2019-01-01 CorWave SA Implantable pump system having a coaxial ventricular cannula
US9968720B2 (en) 2016-04-11 2018-05-15 CorWave SA Implantable pump system having an undulating membrane
AU2018242620B2 (en) 2017-03-31 2023-11-16 CorWave SA Implantable pump system having a rectangular membrane
FR3073578B1 (fr) * 2017-11-10 2019-12-13 Corwave Circulateur de fluide a membrane ondulante
US10188779B1 (en) 2017-11-29 2019-01-29 CorWave SA Implantable pump system having an undulating membrane with improved hydraulic performance
US11009447B2 (en) * 2017-12-11 2021-05-18 Honeywell International Inc. Micro airflow generator for miniature particulate matter sensor module
CN113795295A (zh) 2019-03-15 2021-12-14 科瓦韦公司 用于控制可植入血泵的系统及方法
EP4114504A1 (de) 2020-03-06 2023-01-11 CorWave SA Implantierbare blutpumpe, die ein linearlager umfasst
FR3124658A1 (fr) * 2021-06-28 2022-12-30 Finx Dispositif générateur de flux fluidique
WO2023209547A1 (en) 2022-04-26 2023-11-02 CorWave SA Blood pumps having an encapsulated actuator

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Publication number Priority date Publication date Assignee Title
GB662047A (en) * 1949-11-21 1951-11-28 George Aksel Thiberg Improvements in diaphragm pumps and compressors
FR1252149A (fr) * 1959-12-16 1961-01-27 Chausson Usines Sa Compresseur à mouvement oscillant entretenu électromagnétiquement
FR2744769B1 (fr) * 1996-02-12 1999-02-12 Drevet Jean Baptiste Circulateur de fluide a membrane vibrante
US6264438B1 (en) * 1998-02-10 2001-07-24 Ohken Seiko Co., Ltd. Reciprocating pump having a ball drive
US6899530B2 (en) * 2002-10-31 2005-05-31 Wanner Engineering, Inc. Diaphragm pump with a transfer chamber vent with a longitudinal notch on the piston cylinder
FR2861910B1 (fr) * 2003-10-29 2006-01-13 Jean Baptiste Drevet Machine electromagnetique a membrane deformable et moteur electromagnetique adapte a une telle machine
FR2893991B1 (fr) * 2005-11-30 2013-10-11 Jean Baptiste Drevet Circulateur a membrane

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010012887A1 *

Also Published As

Publication number Publication date
US8714944B2 (en) 2014-05-06
ES2632173T3 (es) 2017-09-11
CN102112743A (zh) 2011-06-29
FR2934652B1 (fr) 2013-01-11
US20110176946A1 (en) 2011-07-21
CN102112743B (zh) 2015-05-13
DK2313655T3 (en) 2017-07-31
FR2934652A1 (fr) 2010-02-05
WO2010012887A1 (fr) 2010-02-04
JP2011529548A (ja) 2011-12-08
JP5291193B2 (ja) 2013-09-18
CA2767332C (fr) 2014-07-08
EP2313655B1 (de) 2017-04-12
CA2767332A1 (fr) 2010-02-04

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