DE29804811U1 - Binary electrically controllable fluidic power amplifier - Google Patents
Binary electrically controllable fluidic power amplifierInfo
- Publication number
- DE29804811U1 DE29804811U1 DE29804811U DE29804811U DE29804811U1 DE 29804811 U1 DE29804811 U1 DE 29804811U1 DE 29804811 U DE29804811 U DE 29804811U DE 29804811 U DE29804811 U DE 29804811U DE 29804811 U1 DE29804811 U1 DE 29804811U1
- Authority
- DE
- Germany
- Prior art keywords
- power amplifier
- relay
- pressure
- electrically controllable
- fluidic
- 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
Links
- 239000012528 membrane Substances 0.000 claims description 20
- 239000012530 fluid Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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
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 Fluid Pressure (AREA)
- Control Of Amplification And Gain Control (AREA)
- Thyristors (AREA)
- Amplifiers (AREA)
Description
GbRGbR
PATENTANWÄLTE Manzingerweg 7PATENT ATTORNEYS Manzingerweg 7
european patent attorneys D-81241 Müncheneuropean patent attorneys D-81241 Munich
EUROPEANTRADEMARKATTORNEYS Tel. +49 89 89 69 80EUROPEANTRADEMARKATTORNEYS Tel. +49 89 89 69 80
17. März 199817 March 1998
Bürkert Werke GmbH & Co.
Christian-Bürkert-Str. 13-17
74653 IngelfingenBürkert-Werke GmbH & Co.
Christian-Bürkert-Str. 13-17
74653 Ingelfingen
Unser Zeichen: B 3484 DE
HD/sc
10 Our reference: B 3484 DE
HD/sc
10
Binärer elektrisch ansteuerbarer fluidischer Leistungsverstärker
15Binary electrically controllable fluidic power amplifier
15
Die Erfindung betrifft einen binären, elektrisch ansteuerbaren fluidischen Leistungsverstärker. Ein solcher Leistungsverstärker ist besonders vorteilhaft in einem geregelten pneumatischen Stellantrieb und allgemein in allen Fällen anwendbar, bei denen mit geringer Ansteuerleistung ein hoher Volumenstrom bei Drücken bis zu 10 Bar oder mehr und bei kurzen Schaltzeiten geschaltet werden soll.The invention relates to a binary, electrically controllable fluidic power amplifier. Such a power amplifier is particularly advantageous in a controlled pneumatic actuator and can generally be used in all cases in which a high volume flow is to be switched with low control power at pressures of up to 10 bar or more and with short switching times.
Herkömmliche fluidische Leistungsverstärker dieser Art sind mit fluidisch gekoppelten Verstärkerstufen ausgestattet. Die mit dieser Lösung erreichbaren Schaltzeiten werden durch schädliche Volumina beeinträchtigt. Zur Anpassung der erforderlichen Schaltkräfte sind Eingriffe in die Fluidik erforderlich, was mit erheblichem Aufwand verbunden ist.Conventional fluidic power amplifiers of this type are equipped with fluidically coupled amplifier stages. The switching times achievable with this solution are affected by harmful volumes. To adjust the required switching forces, interventions in the fluidics are necessary, which involves considerable effort.
Durch die Erfindung wird ein binärer, elektrisch ansteuerbarerThe invention provides a binary, electrically controllable
fluidischer Leistungsverstärker geschaffen, der sich durch kurze Schaltzeiten und geringe elektrische Ansteuerleistung bei großem schaltbaren Volumenstrom bis in den Bereich von etwa 10 Bar auszeichnet.A fluidic power amplifier was created which is characterized by short switching times and low electrical control power with a large switchable volume flow up to the range of about 10 bar.
-2--2-
Gemäß der Erfindung ist vorgesehen, daß mittels eines elektrisch ansteuerbaren Ventils ein Steuerdruck an einen Druck/Kraft-Wandler durchschaltbar ist und die von dem Druck/Kraft-Wandler abgegebene Kraft als Schaltkraft an einem fluidischen Relais wirksam ist.According to the invention, it is provided that a control pressure can be switched through to a pressure/force converter by means of an electrically controllable valve and the force emitted by the pressure/force converter acts as a switching force on a fluidic relay.
Die Einfügung eines Druck/Kraft-Wandlers zwischen das elektrisch ansteuerbare Ventil und das fluidische Relais ist eine unkonventionelle Maßnahme und könnte wegen des Rückgriffs auf mechanische, bewegte Elemente als nachteilhaft erscheinen, wenn nicht erkannt wird, daß gerade hierdurch die angestrebten Eigenschaften erzielt werden können. Die erforderliche Schaltkraft für das fluidische Relais kann nämlich von einem Druck/Kraft-Wandler aufgebracht werden, dessen fluidischer Teil ein sehr geringes Volumen aufweist. Dadurch werden kurze Schaltzeiten begünstigt. Eine Beeinflussung der Schaltkraft ist durch die Größe des von dem elektrisch ansteuerbaren Ventil gelieferten Steuerdrucks oder auch durch die Größe der druckbeaufschlagten Fläche des Druck/Kraft-Wandlers möglich.The insertion of a pressure/force converter between the electrically controlled valve and the fluidic relay is an unconventional measure and could appear disadvantageous due to the use of mechanical, moving elements if it is not recognized that this is precisely how the desired properties can be achieved. The required switching force for the fluidic relay can be applied by a pressure/force converter whose fluidic part has a very small volume. This promotes short switching times. The switching force can be influenced by the size of the control pressure supplied by the electrically controlled valve or by the size of the pressurized area of the pressure/force converter.
Bei der bevorzugten Ausführungsform wird als fluidisches Relais ein Doppelmembranrelais verwendet, das als 3/2-Wegeventil geschaltet ist. Mit einem erfindungsgemäßen fluidischen Leistungsverstärker kann durch ein diskretes elektrisches Signal im Bereich von etwa 5 bis etwa 50 mW ein Volumenstrom von mindestens etwa 100 l/min bei einem Druck bis etwa 10 Bar geschaltet werden.In the preferred embodiment, a double diaphragm relay is used as the fluidic relay, which is switched as a 3/2-way valve. With a fluidic power amplifier according to the invention, a volume flow of at least about 100 l/min at a pressure of up to about 10 bar can be switched by means of a discrete electrical signal in the range of about 5 to about 50 mW.
Die bevorzugte Ausführungsform des erfindungsgemäßen fluidischen Leistungsverstärkers wird nun unter Bezugnahme auf die Zeichnung näher beschrieben. Die einzige Figur der Zeichnung zeigt als Blockdiagramm die drei Bestandteile des Leistungsverstärkers.The preferred embodiment of the fluidic power amplifier according to the invention will now be described in more detail with reference to the drawing. The only figure in the drawing shows the three components of the power amplifier as a block diagram.
Ein elektrisch durch ein diskretes Signal einer Leistung im Bereich von etwa 5 bis etwa 50 mW ansteuerbares Ventil 10, insbesondere Piezo- oder Magnetventil, hat einen Eingang 12, der an eine Druckquelle im Bereich von 1 Bar angeschlossen ist, und einen Ausgang 14, der an den fluidischen Eingang eines Druck/Kraft-Wandlers 16 angeschlossen ist. Die Ausgangsgröße des Druck/Kraft-Wandlers ist eine mechanische Schaltkraft, die durch eine starre Stange 18 von derA valve 10, in particular a piezo or solenoid valve, which can be electrically controlled by a discrete signal with a power in the range of about 5 to about 50 mW, has an input 12 which is connected to a pressure source in the range of 1 bar and an output 14 which is connected to the fluidic input of a pressure/force converter 16. The output variable of the pressure/force converter is a mechanical switching force which is transmitted by a rigid rod 18 from the
druckbeaufschlagten Membran 16a des Druck/BCraft-Wandlers 16 abgenommen wird. Die Stange 18 ist an ihrem vom Druck/Kraft-Wandler abgewandten Ende an eine Membran 20a der zwei Membranen 20a, 20b eines Doppelmembranrelais 20 angekoppelt. In bekannter Weise sind die Membranen 20a, 20b des Doppelmembranrelais 20 intern durch eine starre Verbindung 18a miteinander verbunden. Wenn die fünf Fluidanschlüsse des Doppelmembranrelais 20 in üblicher Weise mit xi, X2, X3, X4 und y bezeichnet werden, so sind die Anschlüsse X2 und X3 gemeinsam an eine Fluidquelle angeschlossen, die einen Volumenstrom von mindestens etwa 100 l/min bei einem Druck von bis etwa 10 Bar liefert. Der Anschluß y bildet dann den geschalteten Ausgang des Doppelmembranrelais. Die Anschlüsse xi und X4 bleiben unbeschaltet, sie liegen an Atmosphäre.pressurized membrane 16a of the pressure/force converter 16 is removed. The rod 18 is coupled at its end facing away from the pressure/force converter to a membrane 20a of the two membranes 20a, 20b of a double membrane relay 20. In a known manner, the membranes 20a, 20b of the double membrane relay 20 are internally connected to one another by a rigid connection 18a. If the five fluid connections of the double membrane relay 20 are designated in the usual way as xi, X2, X3, X4 and y, then the connections X2 and X3 are jointly connected to a fluid source that supplies a volume flow of at least about 100 l/min at a pressure of up to about 10 bar. The connection y then forms the switched output of the double membrane relay. The connections xi and X4 remain unconnected, they are connected to atmosphere.
Im Betrieb wird durch das mit einem diskreten elektrischen Signal angesteuerte Ventil 10 ein Steuerdruck von etwa 1 Bar geschaltet, der die im Inneren des Druck/Kraft-Wandlers 16 eingespannte Membran 16a beaufschlagt. Die von der Membran 16a durch die Stange 18 abgenommene Schaltkraft wird auf die beiden Membranen des Doppelmembranrelais 20 übertragen. Durch die Schaltkraft wird das binäre Doppelmembranrelais von dem einen in den anderen Schaltzustand umgeschaltet. Ohne Schaltkraft wird die Membran 20b durch den Mediendruck gegen den ihr zugeordneten Dichtsitz angelegt, so daß der Ausgang y von den Anschlüssen X2 und x3 isoliert ist. Das Doppelmembranrelais ist im geschlossenen Zustand. Bei wirksamer Schaltkraft ist hingegen die Membran 20b von dem ihr zugeordneten Dichtsitz abgehoben, so daß die Anschlüsse x2 und X3 mit dem Ausgang y in Verbindung stehen. Das Doppelmembranrelais ist dann geöffnet. Die Membran 20a dient der sicheren Führung der aus Verbindung 18a und den beiden Membranen 20a, 20b gebildeten beweglichen Einheit.In operation, a control pressure of approximately 1 bar is switched by the valve 10, which is controlled by a discrete electrical signal, which acts on the membrane 16a clamped inside the pressure/force converter 16. The switching force taken from the membrane 16a by the rod 18 is transferred to the two membranes of the double membrane relay 20. The switching force switches the binary double membrane relay from one switching state to the other. Without switching force, the membrane 20b is placed against its associated sealing seat by the media pressure, so that the output y is isolated from the connections X2 and x3. The double membrane relay is in the closed state. When the switching force is effective, however, the membrane 20b is lifted off its associated sealing seat, so that the connections x2 and X3 are connected to the output y. The double membrane relay is then open. The membrane 20a serves to safely guide the movable unit formed by connection 18a and the two membranes 20a, 20b.
Es ist ersichtlich, daß das Doppelmembranrelais bei der gezeigten Ausführungsform als 3/2-Wegeventil geschaltet ist. Den gleichen Zweck kann ein anders geartetes Ventil erfüllen, beispielsweise ein Schieberventil.It is clear that the double diaphragm relay is connected as a 3/2-way valve in the embodiment shown. The same purpose can be fulfilled by a different type of valve, for example a slide valve.
Claims (7)
20controllable valve (10) a control pressure can be switched through to a pressure/force converter (16) and the force output by the pressure/force converter (16) acts as a switching force on a fluidic relay (20).
20
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29804811U DE29804811U1 (en) | 1998-03-17 | 1998-03-17 | Binary electrically controllable fluidic power amplifier |
| DE59911716T DE59911716D1 (en) | 1998-03-17 | 1999-03-17 | Binary electrically controllable fluidic power amplifier |
| EP99104059A EP0943811B1 (en) | 1998-03-17 | 1999-03-17 | Binary electrically-controlled fluidic amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29804811U DE29804811U1 (en) | 1998-03-17 | 1998-03-17 | Binary electrically controllable fluidic power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29804811U1 true DE29804811U1 (en) | 1998-07-16 |
Family
ID=8054318
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29804811U Expired - Lifetime DE29804811U1 (en) | 1998-03-17 | 1998-03-17 | Binary electrically controllable fluidic power amplifier |
| DE59911716T Expired - Lifetime DE59911716D1 (en) | 1998-03-17 | 1999-03-17 | Binary electrically controllable fluidic power amplifier |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE59911716T Expired - Lifetime DE59911716D1 (en) | 1998-03-17 | 1999-03-17 | Binary electrically controllable fluidic power amplifier |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0943811B1 (en) |
| DE (2) | DE29804811U1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010051743B4 (en) | 2010-11-19 | 2022-09-01 | C. Miethke Gmbh & Co. Kg | Programmable hydrocephalus valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4233301C1 (en) * | 1992-10-03 | 1994-02-17 | Samson Ag | Position regulator using pneumatically-operated electromagnetic valves - uses microprocessor evaluating setting disparity to indicate fault in setting regulator or setting device. |
| DE4232519C2 (en) * | 1992-09-22 | 1995-12-21 | Mannesmann Ag | Computer bus controlled power valve control |
| DE4105062C2 (en) * | 1990-09-19 | 1997-01-23 | Helmut Prof Dipl Ing Hoenicke | Electropneumatic positioner with pulse width control |
Family Cites Families (7)
| 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 (en) * | 1985-10-03 | 1987-04-13 | Yamatake Honeywell Co Ltd | Electro-pneumatic transducer |
| EP0276056A3 (en) * | 1987-01-23 | 1989-11-29 | Borg-Warner Automotive, Inc. | Valve arrangement for a fluid flow control system |
| GB8811123D0 (en) * | 1988-05-11 | 1988-06-15 | Watson Smith Ltd | Pressure regulator |
| DD273202A1 (en) * | 1988-06-24 | 1989-11-08 | Medizin Labortechnik Veb K | CIRCUIT ARRANGEMENT FOR CONTROLLING VENTILATION GASES |
| CA2041766A1 (en) * | 1990-06-08 | 1991-12-09 | Alan L. Miller | Pulse width modulated pressure control valve configuration |
| DE4339165A1 (en) * | 1993-11-16 | 1995-05-18 | Buerkert Werke Gmbh & Co | Valve combination |
-
1998
- 1998-03-17 DE DE29804811U patent/DE29804811U1/en not_active Expired - Lifetime
-
1999
- 1999-03-17 EP EP99104059A patent/EP0943811B1/en not_active Expired - Lifetime
- 1999-03-17 DE DE59911716T patent/DE59911716D1/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4105062C2 (en) * | 1990-09-19 | 1997-01-23 | Helmut Prof Dipl Ing Hoenicke | Electropneumatic positioner with pulse width control |
| DE4232519C2 (en) * | 1992-09-22 | 1995-12-21 | Mannesmann Ag | Computer bus controlled power valve control |
| DE4233301C1 (en) * | 1992-10-03 | 1994-02-17 | Samson Ag | Position regulator using pneumatically-operated electromagnetic valves - uses microprocessor evaluating setting disparity to indicate fault in setting regulator or setting device. |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59911716D1 (en) | 2005-04-14 |
| EP0943811A2 (en) | 1999-09-22 |
| EP0943811A3 (en) | 2002-03-20 |
| EP0943811B1 (en) | 2005-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R163 | Identified publications notified | ||
| R207 | Utility model specification |
Effective date: 19980827 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20010228 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20040317 |
|
| R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20060407 |
|
| R071 | Expiry of right |