EP2625434A2 - Actionneur à bobine fixe et à égalisation d'effort pour dispositifs de déplacement de fluide - Google Patents

Actionneur à bobine fixe et à égalisation d'effort pour dispositifs de déplacement de fluide

Info

Publication number
EP2625434A2
EP2625434A2 EP11831649.6A EP11831649A EP2625434A2 EP 2625434 A2 EP2625434 A2 EP 2625434A2 EP 11831649 A EP11831649 A EP 11831649A EP 2625434 A2 EP2625434 A2 EP 2625434A2
Authority
EP
European Patent Office
Prior art keywords
fluid
armatures
coil
fluid chamber
housing
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Withdrawn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
EP11831649.6A
Other languages
German (de)
English (en)
Other versions
EP2625434A4 (fr
Inventor
Timothy S. Lucas
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.)
Aavid Thermalloy LLC
Original Assignee
Influent Corp
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 Influent Corp filed Critical Influent Corp
Publication of EP2625434A2 publication Critical patent/EP2625434A2/fr
Publication of EP2625434A4 publication Critical patent/EP2625434A4/fr
Withdrawn legal-status Critical Current

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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/047—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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric 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
    • 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
    • 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
    • F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
    • F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
    • F04B45/043—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms two or more plate-like pumping flexible members in parallel

Definitions

  • This application relates to high-power long-life actuators for positive displacement fluid movers such as liquid pumps, gas compressors and synthetic jets.
  • Positive displacement fluid movers can provide high flow and pressure however in order to be suitable for many applications such as medical devices;
  • the present application discloses a dual armature/diaphragm actuator with a stationary coil mounted between the armatures, where the resulting magnetic force is applied directly between the two pistons thereby assuring that both pistons experience the same instantaneous actuation force in order to minimize vibration.
  • the means of actuation integrates the piston and actuator components to reduce the size of fluid movers for a given pumping power output, while eliminating any dynamic electrical components, such as vibrating wires that could lead to failure and reduced life.
  • FIG. 1 illustrates an embodiment of a fluid mover actuator that provides for the same actuator force being applied to both armatures.
  • FIG. 2 is a sectional view of the actuator of FIG. 1 showing the flux path that occurs when the coil is energized.
  • FIG. 3 is a sectional view that illustrates how the actuation system of FIG. 1 is applied to a fluid mover.
  • FIG. 4 is sectional view of the fluid mover of FIG. 3 that shows the mounting of the stationary coil.
  • FIG. 5 is a sectional view illustrating how both sides of each diaphragm can be used to form additional fluid chambers for applying energy to fluids.
  • FIG. 6 provides sectional and exploded views of an armature design that increases actuator efficiency by improving coil utilization.
  • Figure 1 illustrates certain key functional concepts of a fluid actuator according to an exemplary embodiment of the present invention where a stationary coil 6 is positioned between an identical pair of armatures 2 and 4.
  • a magnetic field is generated within armatures 2 and 4 and the resulting flux loop path of the field is illustrated by the dotted lines in Figure 2.
  • the magnetic field creates an attractive force in the air gap between the armatures that pulls the two armatures towards each other. Applying the force directly between the two armatures assures that the instantaneous forces, and therefore the force waveform, experienced by armatures 2 and 4 are always identical.
  • Figure 3 illustrates how the actuator of Figure 1 is used in a fluid moving device. Armatures 16 and 18 are bonded to respective diaphragms 8 and 10.
  • Diaphragms 8 and 10 each have an annular cantilever spring matrix making the diaphragms capable of larger axial displacements. In practice, diaphragms 8 and 10 would have an elastomeric over molding (not shown) to provide a pressure seal. Diaphragms 8 and 10 represent one of many kinds of diaphragms that could be used within the scope of the present invention while still exploiting the actuation principles thereof. The diaphragms may be configured, for example, as shown in International Patent Application No. PCT/US2011/022386, which is incorporated by reference herein in its entirety. Diaphragms 8 and 10 form a pressure tight seal with housing 12. Compression chamber 20 is bounded by diaphragms 8 and 10 and housing 12.
  • the fluid mover of Figure 3 can be operated at its mechanical mass-spring resonance frequency where the resonance frequency is determined by the combined spring stiffness of the diaphragm and fluid and the mass of the fluid and armature.
  • both sides of the diaphragms can be used for fluid work.
  • Figure 5 shows the addition of end plates 26 and 28 which create respective fluid chambers 30 and 32. Fluid chambers 30 and 32 can be used to convey energy to fluid for any of the above mentioned applications.
  • FIG. 6 shows an armature design for improving electro-mechanical transduction efficiency.
  • opposing armatures 40 and 42 are attached to respective diaphragms 34 and 36 with the diaphragms in turn being attached to housing 38.
  • a stationary coil 44 is rigidly mounted to housing 38 by coil arms 46 and 48.
  • the coil is more completely surrounded with the armature material compared to the design shown in Figures 3 and 4, where a portion of the coil is outside the armature material. Sections of the coil that are outside the armature material generate less of a magnetic field in the armatures which reduces the actuator's efficiency. Further variations may include alternate components used to create the force such as permanent magnets and moving- magnet stationary-coil voice coil type actuators, where the armatures would be replaced with a voice-coil type magnet and backing magnet iron to provide a coil air gap having a permanent magnetic field. Specific subcomponent designs for an actuator according to the present invention will be determined by good design practice in response to specific design and end-product requirements.
  • a fluid actuator according to the present invention can be driven at any frequency within the scope of the present invention. While performance advantages can be provided by operating the actuator at drive frequencies that are equal to or close to its mass-spring resonance, the scope of the present invention is not limited to the proximity of the drive frequency to the mass- spring resonance frequency. When drive frequencies are close enough to the mass- spring resonance that energy is stored in the resonance, then armature-diaphragm amplitudes will increase in proportion to the stored energy. The closer the drive frequency is to the instantaneous resonance frequency, the greater the stored energy and the greater the armature/diaphragm displacement and the greater the power transferred to the fluid in the fluid chamber for a given input power level. Operation of an actuator according to the present invention, either with or without stored energy, is considered within the scope of the present invention.
  • the armatures would typically be made of ferrous type metals having high magnetic permeability but that the degree of permeability and loss characteristics required will be based on the requirements of a given application.
  • drive circuits may be used to power a fluid mover actuator according to the present invention and will be apparent to one skilled in the art and these drive circuits may include resonance locking controls, such as a phase locked loop control or other CPU-based controls, to keep the drive frequency locked to the mechanical resonance frequency which can change due to changing system
  • Applications for a fluid mover actuator according to the present invention include moving air or liquids for heat exchange in thermal management applications via air pumps, liquid pumps or synthetic jets for a wide range of hot objects including electronics components such as microprocessors, power electronics components such as MODFETS, HBLEDs and any electronics components needing cooling as well as secondary heat exchange targets such as heatsinks, printed circuit cards and electronics enclosures.
  • Products needing such cooling include servers, PC towers, laptops, HBLED lamps, consumer electronics, PDAs or sealed electronics enclosures such as in cell phones, telecommunications and military applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Fluid-Damping Devices (AREA)
  • Electromagnetic Pumps, Or The Like (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Electromagnets (AREA)

Abstract

L'invention concerne un dispositif de déplacement de fluide comprenant une première armature dynamique fixée à un élément souple et une deuxième armature dynamique fixée à un deuxième élément souple. Le dispositif de déplacement de fluide comprend également un boîtier et des premier et deuxième éléments souples fixés au boîtier de façon à former un volume de chambre à fluide délimité par le boîtier et les premier et deuxième éléments souples. Une bobine fixe de passage de courant est positionnée entre les première et deuxième armatures. Le courant circulant dans la bobine génère une force magnétique agissant sur les armatures, la bobine et les armatures étant positionnées et configurées de façon à garantir que la force magnétique instantanée à laquelle sont soumises les deux armatures est toujours identique indépendamment des positions relatives des armatures et indépendamment des propriétés instationnaires du courant.
EP11831649.6A 2010-10-08 2011-10-07 Actionneur à bobine fixe et à égalisation d'effort pour dispositifs de déplacement de fluide Withdrawn EP2625434A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39152410P 2010-10-08 2010-10-08
PCT/US2011/055196 WO2012048179A2 (fr) 2010-10-08 2011-10-07 Actionneur à bobine fixe et à égalisation d'effort pour dispositifs de déplacement de fluide

Publications (2)

Publication Number Publication Date
EP2625434A2 true EP2625434A2 (fr) 2013-08-14
EP2625434A4 EP2625434A4 (fr) 2017-06-21

Family

ID=45928449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11831649.6A Withdrawn EP2625434A4 (fr) 2010-10-08 2011-10-07 Actionneur à bobine fixe et à égalisation d'effort pour dispositifs de déplacement de fluide

Country Status (7)

Country Link
US (1) US20130230419A1 (fr)
EP (1) EP2625434A4 (fr)
JP (1) JP5941471B2 (fr)
CN (1) CN103210218B (fr)
BR (1) BR112013008181A2 (fr)
IN (1) IN2013MN00704A (fr)
WO (1) WO2012048179A2 (fr)

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DE602007004546D1 (de) 2006-09-28 2010-03-18 Tyco Healthcare Tragbares Wundtherapiesystem
ES2776709T3 (es) 2007-11-21 2020-07-31 Smith & Nephew Apósito para heridas
GB201015656D0 (en) 2010-09-20 2010-10-27 Smith & Nephew Pressure control apparatus
US9067003B2 (en) 2011-05-26 2015-06-30 Kalypto Medical, Inc. Method for providing negative pressure to a negative pressure wound therapy bandage
US9084845B2 (en) 2011-11-02 2015-07-21 Smith & Nephew Plc Reduced pressure therapy apparatuses and methods of using same
US9901664B2 (en) 2012-03-20 2018-02-27 Smith & Nephew Plc Controlling operation of a reduced pressure therapy system based on dynamic duty cycle threshold determination
US9427505B2 (en) 2012-05-15 2016-08-30 Smith & Nephew Plc Negative pressure wound therapy apparatus
US20150078934A1 (en) * 2013-09-18 2015-03-19 Aavid Thermalloy, Llc Split fluidic diaphragm
WO2015171359A1 (fr) 2014-05-05 2015-11-12 Aavid Thermalloy, Llc Bobine plane et support pour actionneur de dispositif de déplacement de fluide
US9855186B2 (en) 2014-05-14 2018-01-02 Aytu Women's Health, Llc Devices and methods for promoting female sexual wellness and satisfaction
AU2015370583B2 (en) 2014-12-22 2020-08-20 Smith & Nephew Plc Negative pressure wound therapy apparatus and methods
WO2016176132A1 (fr) 2015-04-29 2016-11-03 Aavid Thermalloy, Llc Ressort plat pour un dispositif de déplacement de fluide
DE102016200256A1 (de) * 2016-01-13 2017-07-13 Robert Bosch Gmbh Pumpvorrichtung und Partikeldetektor mit einer Pumpvorrichtung
CN109185554B (zh) * 2018-09-30 2019-10-18 浙江大学 一种音圈驱动的微型柔性阀
CN115296558B (zh) * 2022-08-29 2025-10-17 南京伶机宜动驱动技术有限公司 基于无线驱动的多自由度运动系统

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CH573550A5 (en) * 1973-01-26 1976-03-15 Klaue Hermann Magnetic push pull compressor - has diaphragms or pistons which reciprocate by electro magnets
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Also Published As

Publication number Publication date
WO2012048179A3 (fr) 2012-08-30
JP2013545007A (ja) 2013-12-19
BR112013008181A2 (pt) 2016-06-21
CN103210218A (zh) 2013-07-17
US20130230419A1 (en) 2013-09-05
JP5941471B2 (ja) 2016-06-29
WO2012048179A2 (fr) 2012-04-12
CN103210218B (zh) 2016-05-11
IN2013MN00704A (fr) 2015-06-12
EP2625434A4 (fr) 2017-06-21

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