WO2009149137A1 - Vanne à manchon déformable à actionnement piézoélectrique - Google Patents

Vanne à manchon déformable à actionnement piézoélectrique Download PDF

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Publication number
WO2009149137A1
WO2009149137A1 PCT/US2009/046052 US2009046052W WO2009149137A1 WO 2009149137 A1 WO2009149137 A1 WO 2009149137A1 US 2009046052 W US2009046052 W US 2009046052W WO 2009149137 A1 WO2009149137 A1 WO 2009149137A1
Authority
WO
WIPO (PCT)
Prior art keywords
tube
pinch
valve
flexible tube
actuator assembly
Prior art date
Application number
PCT/US2009/046052
Other languages
English (en)
Inventor
James Burns
Joel Verrecchia
Original Assignee
Parker Hannifin Corporation
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 Parker Hannifin Corporation filed Critical Parker Hannifin Corporation
Publication of WO2009149137A1 publication Critical patent/WO2009149137A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K7/00—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves
    • F16K7/02—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm
    • F16K7/04—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force
    • F16K7/045—Diaphragm valves or cut-off apparatus, e.g. with a member deformed, but not moved bodily, to close the passage ; Pinch valves with tubular diaphragm constrictable by external radial force by electric or magnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/004—Actuating devices; Operating means; Releasing devices actuated by piezoelectric means

Definitions

  • the present invention relates to a piezo-electric actuated pinch valve used to meter fluid through a fluid flowing through a tube.
  • Actuators are required in a wide variety of modern applications. For example, valves and relays are used throughout industry, transportation, architecture, etc.
  • electromagnetic solenoids are used in a wide variety of clamping and valving applications.
  • electro-magnetic solenoids have many shortcomings. In general, solenoids are relatively large and heavy. Solenoids consume relatively high amounts of power to remain energized. When supplied with only a reduced amount of power, solenoids operate unpredictably. It is difficult to maintain a solenoid in a partially open or partially closed position. Solenoids have relatively slow cycle times, provide weak opening and closing forces, and generate EMF (electromotive force). Differential pressure is required to operate most solenoids. When designed as a valve, most solenoids are gravity sensitive and include a fixed inlet valve port and a fixed outlet valve port requiring a predetermined installation orientation.
  • piezo-electric devices are known to those skilled in the art. Many of these devices include complex configurations and are very expensive to manufacture. Other devices include simpler configurations, but are extremely limited in the corresponding maximum range of movement or the corresponding maximum application of force.
  • At least one embodiment of the invention provides a pinch valve comprising: a flexible tube member; a tube housing body which is adapted to support the flexible tube member; a pinch member in direct contact with the flexible tube member; an actuator assembly comprising a piezo-electric member and a displacement amplifying structure; the pinch member operably connected to the displacement amplifying structure of the actuator assembly and movable against the flexible tube member for varying the cross-sectional area of the flexible tube member by pinching the flexible tube member against the tube housing body.
  • At least one embodiment of the invention provides a pinch valve comprising: an actuator assembly comprising: a support structure defining a rigid non-flexing portion and a moveable portion and a smart material actuator for driving the moveable portion of the support structure between first and second positions; a flexible tube member; a tube housing body which is adapted to support the flexible tube member; a pinch member in direct contact with the flexible tube member; the pinch member operably connected to moveable portion of the support structure and movable against the flexible tube member for- varying the cross-sectional area of the flexible tube member by pinching the flexible tube member against the tube housing body, wherein movement of the pinch member is proportional to an input voltage of the actuator assembly.
  • At least one embodiment of the invention provides a pinch valve comprising: an actuator assembly comprising: a piezoelectric member and an amplifier device for amplifying moment of the piezoelectric member; at least two flexible tube members; a base member having a tube support portion adapted to support the flexible tube members; a pinch member in direct contact with the flexible tube members, the pinch member positioned between the flexible tube members and biasing the tube members against opposing surfaces of the tube support portion of the base; the pinch member operably connected to a moveable portion of the amplifier device, the pinch member moveable to and between a first position wherein the pinch member completely stops the flow through a first of the at least two flexible tube members when the actuator assembly is not actuated and a second position wherein the pinch member completely stops the flow through a second of the at least two flexible tube members when the actuator assembly is actuated at a predetermined voltage.
  • FIG. 1 is a perspective view of an embodiment of the pinch valve of the present invention
  • FIG. 2 is a side elevational view of the pinch valve shown in FIG. 1 ;
  • FIG. 3 is an opposite side elevational view of the pinch valve shown in FIG. 1 ;
  • FIG. 6 is a perspective view of an embodiment of an embodiment of the actuator assembly usable in the pinch valve of the present invention.
  • FIG. 7 is a perspective view of another embodiment of the pinch valve of the present invention having multiple tubes;
  • FIG. 8 is a side elevational view of the valve of FIG. 7 in a non- actuated state
  • FIG. 9 is a side elevational view of the valve of FIG. 7 in an actuated state and in an intermediate stroke position; and [0018] FIG. 10 is a side elevational view of the valve of FIG. 7 in a fully actuated state.
  • FIGS. 1 to 5 An embodiment of the present invention is shown in FIGS. 1 to 5 as a pinch valve assembly 10.
  • the valve assembly 10 comprises an actuator assembly 20, such as the smart material actuator disclosed in co-owned U.S. Patent No. 6,759,790 issued July 6, 2004 and entitled "Apparatus For Moving Folded-Back Arms Having A Pair Of Opposing Surfaces In Response To An Electrical Aactivation", and herein incorporated by reference.
  • the valve assembly 10 further comprises a moving arm 50 attached to the smart material actuator assembly 20.
  • a tubing holder 30 is attached to the actuator assembly 20 on a side opposite that of the moving arm 50.
  • the tubing holder 30 is adapted to support and hold a tube (not shown).
  • the moving arm 50 has a tubing clamp 40, also referred to as a pinch member or plunger, adjustably connected thereto by the preload adjust screw 42.
  • valve assembly 10 is shown in a non-actuated position in which the tubing clamp 40 would fully compress the tube to prevent any flow through the tube.
  • the moving arm 50 and attached tubing clamp 40 move upward in proportion to the electrical input to the actuator assembly 20.
  • the full movement of the arm to a fully actuated position is shown in FIG. 4, wherein the tube is not compressed at all by the tubing clamp 40, allowing full flow through the tube.
  • the actuator assembly 20 comprises a support structure defining a rigid non-flexing portion 24 and a moveable portion 26.
  • the rigid non-flexing portion 24 houses a smart material actuator 22 for driving the moveable portion 26 of the support structure between first and second positions.
  • the smart material 22 is shown as a rectangular block and is typically a piezo-electric element.
  • the moveable portion 26 may include one or more arms 28 that are either attached to the moveable portion 26 or integrally formed with the moveable portion 26 as a single piece.
  • the pinch valve 10 of the present invention provides the ability to meter flow through a tube that is proportional to the input voltage of the actuator assembly controller. Conventional solenoid-based pinch valves merely provide an on and off capability. The pinch valve 10 of the present invention also utilizes low power consumption, virtually no noise generation, and a longer tube life due to the soft landing of the pinch element because of the capacitive decay rate of the piezo actuator.
  • a second embodiment of the invention is shown in FIG. 7 as a multiple tube pinch valve 110.
  • Pinch valve 110 comprises actuator 20 mounted on base 130, the actuator 20 having a piezoelectric element 22.
  • a first tube, 112 and a second tube 114 are shown positioned on opposite sides of plunger 140 which is attached to arm 28.
  • the plunger 140 may bias the tubes 112 and 114 against opposing support surfaces 132, 134 of the base 130.
  • pinch valve 110 Operation of pinch valve 110 is shown in FIGS. 8-10.
  • pinch valve 110 is shown in an un-actuated state. In this position, the first tube 112 is completely compressed by the plunger 140 and an upper support 132 of base 130 such that no flow passes in the first tube 112 at the pinch valve 110.
  • the second tube 114 is an uncompressed state such that full flow passes through the second tube 114.
  • the plunger 140 is shown in direct contact with the first tube 112 and the second tube 114.
  • a predetermined voltage is applied to the piezoelectric actuator 20 to move arm 28 generally downward such that the pinch valve 110 is shown in an actuated state, at a half-stroke position.
  • the first tube 112 is compressed by the plunger 140 to allow about 50% of full flow and the second tube 114 is compressed by the plunger 140 to allow about 50% of full flow.
  • the plunger 140 is positioned generally midway between upper support surface 132 and lower support surface 134 of the base 130.
  • a predetermined voltage is applied to the piezoelectric actuator 20 to move arm 28 further downward such that pinch valve 110 is shown in a fully actuated state.
  • first tube 112 is in an uncompressed condition, while the second tube 114 is fully compressed by plunger 140 against lower support surface 134 of the base 130 such that no flow passes through second tube 114 at the pinch valve 110.
  • the plunger 140 is shown in direct contact with the first tube 112 and the second tube 114.
  • the pinch valve 110 can be positioned in any number of positions between the un-actuated position and fully actuated position.
  • flow rates of the first tube 112 and the second tube 114 may be 10%, 90%; 20%, 80%; 30%, 70%; 40%, 60%; 60%, 40%; 70%, 30%; 80%, 20%; 90%, 10%, each respectively.
  • different size tubes or tubes with different properties such as tube deflection rates

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electrically Driven Valve-Operating Means (AREA)

Abstract

L'invention concerne une vanne à manchon déformable qui dose un fluide circulant à travers au moins un tube. La vanne fait appel à un ensemble actionneur (20) comportant un organe piézoélectrique et une structure amplificatrice de déplacement pour commander un organe (40) de pincement qui peut être déplacé au contact du tube afin de faire varier l’aire en section droite de la vanne en pinçant l’élément de tube souple contre le corps logeant le tube. Le débit à travers le tube est proportionnel à la tension d’entrée de l’ensemble actionneur.
PCT/US2009/046052 2008-06-03 2009-06-03 Vanne à manchon déformable à actionnement piézoélectrique WO2009149137A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US5826508P 2008-06-03 2008-06-03
US61/058,265 2008-06-03

Publications (1)

Publication Number Publication Date
WO2009149137A1 true WO2009149137A1 (fr) 2009-12-10

Family

ID=40904210

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/046052 WO2009149137A1 (fr) 2008-06-03 2009-06-03 Vanne à manchon déformable à actionnement piézoélectrique

Country Status (1)

Country Link
WO (1) WO2009149137A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012022314A1 (fr) * 2010-06-02 2012-02-23 Technische Universität Berlin Système de vanne permettant de réguler le débit d'un fluide dans un canal de fluide, agencement et système de vanne à plusieurs voies
WO2015155661A1 (fr) * 2014-04-07 2015-10-15 I.P.U. Industries Ltd Robinet à manchon
EP3015749A1 (fr) * 2014-10-29 2016-05-04 Asco Numatics GmbH Dispositif de commande de milieux fluidiques et utilisation d'un élément de formage dans un tel dispositif
CN106662097A (zh) * 2014-08-14 2017-05-10 Sfc流体股份有限公司 双闭锁微型阀
US10578220B2 (en) 2017-02-27 2020-03-03 Bimba Manufacturing Company Proportionally controlled pinch valves, systems and methods
EP3844427A4 (fr) * 2018-08-30 2022-06-08 SFC Fluidics, Inc État métastable de valves à double verrouillage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5188334A (en) * 1990-11-24 1993-02-23 Horiba, Ltd. Pinch valve assembly with a storage mode
GB2274326A (en) * 1993-01-18 1994-07-20 Kodak Ltd Pinch valve with adjustable reaction member
US20040124747A1 (en) * 2001-01-29 2004-07-01 Bugel John Anthony Apparatus for moving folded-back arms having a pair of opposing surfaces in response to an electrical activation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5188334A (en) * 1990-11-24 1993-02-23 Horiba, Ltd. Pinch valve assembly with a storage mode
GB2274326A (en) * 1993-01-18 1994-07-20 Kodak Ltd Pinch valve with adjustable reaction member
US20040124747A1 (en) * 2001-01-29 2004-07-01 Bugel John Anthony Apparatus for moving folded-back arms having a pair of opposing surfaces in response to an electrical activation

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9067051B2 (en) 2010-06-02 2015-06-30 Technische Universitat Berlin Valve device for controlling a flow of a fluid through a fluid channel, arrangement and multi-way valve device
WO2012022314A1 (fr) * 2010-06-02 2012-02-23 Technische Universität Berlin Système de vanne permettant de réguler le débit d'un fluide dans un canal de fluide, agencement et système de vanne à plusieurs voies
EP3129687A4 (fr) * 2014-04-07 2018-01-17 IPU Industries Ltd Robinet à manchon
WO2015155661A1 (fr) * 2014-04-07 2015-10-15 I.P.U. Industries Ltd Robinet à manchon
US10576201B2 (en) 2014-08-14 2020-03-03 SFC Fluidics, Inc. Dual latching microvalves
CN106662097A (zh) * 2014-08-14 2017-05-10 Sfc流体股份有限公司 双闭锁微型阀
EP3194776A4 (fr) * 2014-08-14 2018-04-04 SFC Fluidics, Inc. Micro-soupapes a double verrouillage
CN106662097B (zh) * 2014-08-14 2018-09-14 Sfc流体股份有限公司 双闭锁微型阀
US9803756B2 (en) 2014-10-29 2017-10-31 Asco Numatics Gmbh Device for controlling fluid media and use of a molded part in such a device
EP3015749A1 (fr) * 2014-10-29 2016-05-04 Asco Numatics GmbH Dispositif de commande de milieux fluidiques et utilisation d'un élément de formage dans un tel dispositif
US10578220B2 (en) 2017-02-27 2020-03-03 Bimba Manufacturing Company Proportionally controlled pinch valves, systems and methods
EP3844427A4 (fr) * 2018-08-30 2022-06-08 SFC Fluidics, Inc État métastable de valves à double verrouillage
US11543037B2 (en) 2018-08-30 2023-01-03 SFC Fluidics, Inc. Metastable state of dual latching valves

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