EP0943811B1 - Amplificateur fluidique binaire à réglage électrique - Google Patents

Amplificateur fluidique binaire à réglage électrique Download PDF

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Publication number
EP0943811B1
EP0943811B1 EP99104059A EP99104059A EP0943811B1 EP 0943811 B1 EP0943811 B1 EP 0943811B1 EP 99104059 A EP99104059 A EP 99104059A EP 99104059 A EP99104059 A EP 99104059A EP 0943811 B1 EP0943811 B1 EP 0943811B1
Authority
EP
European Patent Office
Prior art keywords
pressure
relay
power amplifier
diaphragm
valve
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.)
Expired - Lifetime
Application number
EP99104059A
Other languages
German (de)
English (en)
Other versions
EP0943811A2 (fr
EP0943811A3 (fr
Inventor
Heinz Prof. Dr. Töpfer
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.)
Buerkert Werke GmbH and Co KG
Original Assignee
Buerkert Werke GmbH and Co KG
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 Buerkert Werke GmbH and Co KG filed Critical Buerkert Werke GmbH and Co KG
Publication of EP0943811A2 publication Critical patent/EP0943811A2/fr
Publication of EP0943811A3 publication Critical patent/EP0943811A3/fr
Application granted granted Critical
Publication of EP0943811B1 publication Critical patent/EP0943811B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/042—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure
    • F15B13/043—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves
    • F15B13/0431—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by fluid pressure with electrically-controlled pilot valves the electrical control resulting in an on-off function

Definitions

  • the invention relates to a binary electrically controllable fluid power amplifier according to the preamble of claim 1.
  • a power amplifier is particularly advantageous in a regulated pneumatic actuator and generally applicable in all cases where lower Control power a high flow rate at pressures up to 10 bar or to be switched more and with short switching times.
  • EP-A-0 341 861 there is shown a fluidic power amplifier incorporating a having electrically controllable valve, by which a control pressure to a druckbeaufschlagbare membrane is switched through.
  • the membrane is with the Coupled sealing element of a pressure control valve.
  • the force exerted on the membrane Force can be transmitted to the pressure control valve, where the delivered Force is effective as a mechanical switching force.
  • the invention is a binary, electrically controllable fluidic power amplifier created by safe switching in short Switching times and low electrical drive power at large switchable volume flow up to the range of about 10 bar.
  • the rigid rod at its side facing away from the pressure / force transducer End on a membrane of two membranes of a double membrane relay is coupled.
  • the insertion of a pressure / force converter between the electric controllable valve and the fluidic relay is an unconventional Measure and could be because of resorting to mechanical, moving Elements appear to be disadvantageous if it is not recognized that just this way the desired properties can be achieved.
  • the required switching force for the fluidic relay can namely be applied by a pressure / force transducer whose fluidic Part has a very small volume. This will short switching times favored.
  • An influence on the switching force is due to the Size of the pressure supplied by the electrically controllable valve control pressure or by the size of the pressurized surface of the Pressure / force converter possible.
  • a double diaphragm relay can be used, which is connected as a 3/2-way valve is.
  • a fluidic power amplifier according to the invention can by a discrete electrical signal in the range of about 5 to about 50 mW, a volume flow of at least about 100 l / min at one pressure until about 10 bar are switched.
  • An electrically controllable by a discrete signal of a power in the range of about 5 to about 50 mW valve 10, in particular piezo or solenoid valve, has an input 12 which is connected to a pressure source in the range of 1 bar, and an output 14, the is connected to the fluidic input of a pressure / force converter 16.
  • the output of the pressure / force transducer is a mechanical switching force which is removed by a rigid rod 18 from the pressurized diaphragm 16a of the pressure / force transducer 16.
  • the rod 18 is coupled at its end facing away from the pressure / force transducer end to a membrane 20 a of the two membranes 20 a, 20 b of a double membrane relay 20.
  • the membranes 20a, 20b of the double membrane relay 20 are internally connected by a rigid connection 18a.
  • the five fluid ports of the dual diaphragm relay 20 are commonly referred to as x 1 , x 2 , x 3 , x 4 and y
  • the ports x 2 and x 3 are connected in common to a fluid source having a volumetric flow of at least about 100 liters / min at a pressure of up to about 10 bar.
  • the port y then forms the switched output of the double diaphragm relay.
  • the terminals x 1 and x 4 remain unconnected, they are in atmosphere.
  • a control pressure of about 1 bar is switched by the controlled with a discrete electrical signal valve 10, which acts on the clamped in the interior of the pressure / force transducer 16 membrane 16a.
  • the switching force removed by the diaphragm 16a through the rod 18 is transmitted to the two diaphragms of the double diaphragm relay 20. Due to the switching force, the binary double diaphragm relay is switched from one to the other switching state. Without switching force, the membrane 20b is applied by the media pressure against its associated sealing seat, so that the output y from the terminals x 2 and x 3 is isolated.
  • the double diaphragm relay is in the closed state.
  • the membrane 20b With effective switching force, however, the membrane 20b is lifted from its associated sealing seat, so that the terminals x 2 and x 3 are in communication with the output y. The double membrane relay is then opened.
  • the membrane 20a serves to securely guide the movable unit formed by the connection 18a and the two diaphragms 20a, 20b.
  • the double diaphragm relay in the shown Embodiment is connected as a 3/2-way valve.
  • the same purpose can meet a different kind of valve, such as a slide valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Driven Valves (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Thyristors (AREA)
  • Amplifiers (AREA)
  • Control Of Fluid Pressure (AREA)

Claims (6)

  1. Amplificateur fluidique binaire à pilotage électrique, comportant une valve (10) à pilotage électrique, une pression de commande pouvant être commutée au moyen de la valve (10) à pilotage électrique à une membrane susceptible d'être mise sous pression (16a), d'un convertisseur de pression/force (16), et comportant une tige (18) rigide qui est accouplée par une de ses extrémités à la membrane (16a) susceptible d'être mise sous pression et par laquelle la force fournie par la membrane mise sous pression (16a), du convertisseur de pression/force (16), peut être reçue et transmise à un relais fluidique (20) sur lequel la force fournie agit en tant que force de commutation mécanique, caractérisé en ce que la tige (18) rigide est accouplée, à son extrémité détournée du convertisseur de pression/force (16), à une membrane (20a) parmi deux membranes (20a, 20b) d'un relais à double membrane.
  2. Amplificateur selon la revendication 1, caractérisé en ce que le relais à double membrane (20) est branché en tant que valve à trois voies et deux positions.
  3. Amplificateur selon la revendication 1, caractérisé en ce que le relais fluidique (20) est réalisé en tant que valve à coulisse.
  4. Amplificateur selon l'une des revendications précédentes, caractérisé en ce que la valve (10) à pilotage électrique répond à un signal discret dans la plage d'approximativement 5 à approximativement 50 mW.
  5. Amplificateur selon l'une des revendications précédentes, caractérisé en ce qu'au moyen du relais fluidique (20), un débit volumétrique d'au moins approximativement 100 l/min peut être commuté à une pression allant jusqu'à approximativement 10 bar.
  6. Amplificateur selon l'une des revendications précédentes, caractérisé en ce que la pression de commande commutable au moyen de la valve (10) à pilotage électrique est de l'ordre de grandeur d'un bar.
EP99104059A 1998-03-17 1999-03-17 Amplificateur fluidique binaire à réglage électrique Expired - Lifetime EP0943811B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29804811U 1998-03-17
DE29804811U DE29804811U1 (de) 1998-03-17 1998-03-17 Binärer elektrisch ansteuerbarer fluidischer Leistungsverstärker

Publications (3)

Publication Number Publication Date
EP0943811A2 EP0943811A2 (fr) 1999-09-22
EP0943811A3 EP0943811A3 (fr) 2002-03-20
EP0943811B1 true EP0943811B1 (fr) 2005-03-09

Family

ID=8054318

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99104059A Expired - Lifetime EP0943811B1 (fr) 1998-03-17 1999-03-17 Amplificateur fluidique binaire à réglage électrique

Country Status (2)

Country Link
EP (1) EP0943811B1 (fr)
DE (2) DE29804811U1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010051743B4 (de) 2010-11-19 2022-09-01 C. Miethke Gmbh & Co. Kg Programmierbares Hydrocephalusventil

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341861A2 (fr) * 1988-05-11 1989-11-15 Watson Smith Limited Transducteur courant/pression à deux fils avec accumulation d'énergie

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB621396A (en) * 1946-08-20 1949-04-08 H M Hobson Aircraft & Motor Co A new or improved relay operated selector valve
JPS6280301A (ja) * 1985-10-03 1987-04-13 Yamatake Honeywell Co Ltd 電気−空気圧変換器
EP0276056A3 (fr) * 1987-01-23 1989-11-29 Borg-Warner Automotive, Inc. Agencement de vanne pour système de commande de débit de fluide
DD273202A1 (de) * 1988-06-24 1989-11-08 Medizin Labortechnik Veb K Schaltungsanordnung zur steuerung von beatmungsgasen
CA2041766A1 (fr) * 1990-06-08 1991-12-09 Alan L. Miller Regulateur de pression a modulation de largeur d'impulsions
DE4105062C2 (de) * 1990-09-19 1997-01-23 Helmut Prof Dipl Ing Hoenicke Elektropneumatischer Stellungsregler mit Pulsbreitenansteuerung
DE4232519C2 (de) * 1992-09-22 1995-12-21 Mannesmann Ag Computerbus-gesteuerte Leistungsventilansteuerung
DE4233301C1 (de) * 1992-10-03 1994-02-17 Samson Ag Stellungsregler
DE4339165A1 (de) * 1993-11-16 1995-05-18 Buerkert Werke Gmbh & Co Ventilkombination

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341861A2 (fr) * 1988-05-11 1989-11-15 Watson Smith Limited Transducteur courant/pression à deux fils avec accumulation d'énergie

Also Published As

Publication number Publication date
DE59911716D1 (de) 2005-04-14
EP0943811A2 (fr) 1999-09-22
DE29804811U1 (de) 1998-07-16
EP0943811A3 (fr) 2002-03-20

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