EP0764803A1 - Soupape - Google Patents
Soupape Download PDFInfo
- Publication number
- EP0764803A1 EP0764803A1 EP96110033A EP96110033A EP0764803A1 EP 0764803 A1 EP0764803 A1 EP 0764803A1 EP 96110033 A EP96110033 A EP 96110033A EP 96110033 A EP96110033 A EP 96110033A EP 0764803 A1 EP0764803 A1 EP 0764803A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- axially
- channel
- compensation
- valve according
- 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
Links
Images
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
Definitions
- the invention relates to a valve with a valve housing which has a supply channel for supplying pressure medium, a consumer channel for connection to a consumer and a ventilation channel, the consumer channel being connectable to the supply channel via an inflow opening and to the ventilation channel via a ventilation opening, with two to one another Coaxial, one of the two openings assigned and independently movable closure bodies, each biased towards each other by spring action in a closed position in which they cover and close the associated opening with a closing surface, and with an actuating plunger adjustable by means of a drive device for the two closure body, on which axially oppositely directed actuating surfaces are provided, which, with a corresponding adjustment direction of the actuating plunger in the opening direction, counter to the Fe derkraft act on one of the closure body.
- Such a valve which is designed as a pressure regulating valve, is disclosed in Japanese Unexamined Patent Application with Publication No. JP-H5-158552. It regulates the pressure at the consumer channel by changing the position of the actuating plunger. In order to increase the pressure, the closure body assigned to the inflow opening is lifted more or less far from the assigned valve seat. The same is done with respect to the other closure member assigned to the vent opening if the secondary pressure desired by the consumer is to be reduced.
- the actuating tappet passes through one of the closure bodies and carries at its end section a loading wall which is partially formed by a flexible membrane and which, on the one hand, is acted upon by the pressure prevailing in the consumer channel.
- the position of the actuating plunger is influenced by changing the pressure prevailing on the opposite wall side.
- the known valve is a special valve that can only be used as a pressure control valve. It is not suitable for other valve functions. If, for example, a 3/2-way or 3/3-way proportional valve is required, a completely different type of valve must be used. which means considerable manufacturing and warehousing costs.
- the two closure bodies are arranged axially displaceably on the actuating plunger that axially penetrates them, that the two end sections of the actuating plunger projecting axially beyond the closure bodies carry an at least partially formed by a flexible membrane, gas-tight compensating wall fixed on the valve housing side, that a respective compensation wall and a facing this, the axially opposite action surface of the adjacent closure body movable boundary walls of a compensation chamber serving to compensate for fluid pressure forces acting on the actuating plunger, and that the two compensation rooms are connected via branch channels to the consumer channel.
- Such a valve can also continue to be used as a pressure control valve if the drive device is designed accordingly. It is also suitable however, also for use as a proportional directional control valve, since the pressure forces acting on the actuating plunger caused by the working fluid can be completely compensated, so that only small actuating forces are required for the actuating plunger even at high supply pressure.
- the pressure acting on the closure body in the opening direction in the opening direction is balanced in terms of force, since the same pressure acts on the oppositely directed action surfaces of the closure body via the branch channels and the connected compensation spaces. If the areas of the compensation walls are also the same, the compressive forces applied here also compensate. In this way, pressure-independent actuation of the valve can be implemented.
- the actuating forces suitably depend essentially only on the inherent rigidity of the membranes of the compensating walls and the frictional forces associated with the storage and / or sealing of the closure bodies and the force of the spring loading of the closure bodies.
- the valve according to the invention can be used, for example, as a 3/3-way directional valve, whereby a position control can be integrated. Under certain circumstances, the valve can also be used as a simple switching valve. Use as a pressure control valve is also possible one can consciously specify a certain resulting actuating force in one direction by means of the selection of the area ratio of the two compensating walls, which counteraction is counteracted with the drive device in order to regulate the pressure applied to the consumer. It is advantageous that relatively large diaphragms can be used if a large stroke is required without having to resort to correspondingly strong drive devices.
- the closure bodies are expediently designed in such a way that the pressure forces acting on them in the closed position, which depend on the pressure prevailing in the associated supply or ventilation channel, are at least substantially the same size. Furthermore, the arrangement is preferably such that the outer surfaces of the compensating walls axially opposite the compensating space are constantly subjected to atmospheric pressure. A practically completely compensated fluid-actuated adjusting device is thereby achieved, in which both the supply pressure and the outlet pressure and the ambient pressure can be compensated and do not cause any resulting pressure forces.
- the invention is explained in more detail below on the basis of an exemplary embodiment of the valve shown in the accompanying drawing.
- the single figure shows a longitudinal section through the valve with the drive device attached at the end in the form of a plunger armature drive with integrated travel control.
- the exemplary valve 1 comprises a valve housing 2 to which a drive device 3 is axially attached.
- valve housing 2 extends in the direction of the longitudinal axis 4 a receptacle 6 for an adjusting device, generally designated 5.
- the receptacle 6 merges into a housing chamber 7 with a larger cross section on both sides.
- a supply duct 10, a consumer duct 11 and a vent duct 12 are formed in the valve housing 2. These three channels open axially spaced laterally into the receptacle 6.
- the mouth 13 of the consumer channel 11 lies axially between the mouths 14, 15 of the supply channel 10 and the ventilation channel 12. Otherwise, all three channels 10, 11, 12 open to the outside of the other end Valve housing 2, where further pressure medium lines can be connected if necessary.
- the supply channel 10 is connected to a pressure medium source, not shown, so that the pressure medium is supplied to the valve 1 via it.
- the pressure medium is expediently compressed air, in which case the valve 1 is a pneumatic valve.
- the consumer channel 11 enables the connection of a consumer to be supplied with pressure medium, for example a working cylinder.
- the venting channel 12 serves to vent the consumer channel 11 or the consumer connected to it and therefore expediently leads to the surroundings, in which case a muffler can be assigned to it.
- the mouths 14, 15 of the supply channel 10 and the ventilation channel 12 are, for example, in the area of annular or cylindrical extensions 16 of the receptacle 6. These extensions 16 flank axially on both sides of a central section 17 of the receptacle 6 communicating via the mouth 13 with the consumer channel 11 the transition between the central section 17 and the extension 16 assigned to the supply channel 10 represents an inflow opening 18 and the transition between the central section 17 and the extension 16 communicating with the ventilation channel 12 represents a ventilation opening 19.
- a piston-like closure body 22, 22 ' is located in each of the two extensions 16.
- the two closure bodies 22, 22 ' are arranged coaxially to one another and are displaceably mounted independently of one another.
- a respective closure body 22, 22 'with a sealing section 23 is seated on a valve seat 24 surrounding the associated inflow or vent opening 18, 19, so that the fluid passage through the relevant opening 18, 19 is blocked , wherein the relevant opening 18, 19 is covered by a closing surface 25 of the respective closure body 22, 22 '.
- Each closure body 22, 22 ' is assigned a spring device 26, via which it is acted upon in the direction of the closed position. According to the example, it is formed in each case by a helical compression spring which, according to the example, is supported on the one hand on a circumferential radial collar 27 of the closure body 22, 22 'and on the other hand on a surface of the valve housing 2.
- the spring means 26 act upon the two closure bodies 22, 22 'axially towards one another in the closing direction.
- the radial collar 27 lies in the area of the associated extension 26.
- An externally cylindrically contoured guide section 28 of the closure body 22 adjoins it. 22 'which protrudes into a through opening 32 which connects a respective extension 16 to the adjacent housing chamber 7.
- the through opening 32 is a longitudinal section of the receptacle 6, in which the closure body 22, 22 'is guided so as to be axially displaceable via the associated guide section 28.
- each guide section 28 in the region of the outer circumference bears an annular seal 33 which is expediently received in a circumferential groove and which is in sliding sealing contact with the circumferential surface of the through opening 32.
- it can be formed from a so-called O-ring made of material with rubber-elastic properties.
- the adjusting device 5 also has a rod-shaped actuating plunger 35 which is arranged coaxially in the receptacle 6 is.
- the one-piece actuating plunger 35 for example, simultaneously penetrates both closure bodies 22, 22 ', which thus sit on the actuating plunger 35, a relative axial displacement being ensured.
- the two closure bodies 22, 22 ' are arranged axially spaced apart.
- the section of the actuating plunger 35 bridging this distance hereinafter referred to as the bridging section 36, is provided with two radial projections 37 which, according to the example, are designed in the manner of a ring or a collar.
- a radial projection 37 is in each case directly upstream of a closing surface 25.
- Each radial projection 37 has an actuating surface 38 on the axial side facing the associated closure body 22, 22 '.
- the arrangement is such that, in the closed position of both closure bodies 22, 22', the associated radial projection 37 with its actuating surface 38 is just on the relevant closure body 22, 22 'is present.
- the actuating plunger 35 can be moved or adjusted axially with the aid of the drive device 3 mentioned. Depending on the direction in which the adjustment movement takes place starting from the shown and explained neutral position of the actuating plunger 35, one of the Closure body 22, 22 'is lifted out of the closed position by the action of the associated radial projection 37 and is moved to an open position in which its sealing part 23 maintains a more or less large distance from the valve seat 24. The respective other closure body is not affected, since the radial projection 37 assigned to it moves axially away from it.
- each end section 42, 42 ' carries a gas-tight compensating wall 43 which seals the housing chamber 7 into two axially successive spaces.
- the space immediately adjacent to the passage opening 32 is referred to as the compensation space 44, the opposite outer space as the outer space 45.
- the compensating wall 43 is fixed on the one hand to the end section 42, 42 'and on the other hand to the valve housing 2.
- the arrangement is such that the actuating plunger 35 can nevertheless perform an axial movement.
- the compensating wall 43 is at least partially formed by a flexible membrane 46.
- This for example, disc-shaped Membrane, which expediently consists of material with rubber-elastic properties, has a central opening 47 in the exemplary embodiment, with which it is placed on the actuating plunger 35 and clamped. In the area of its outer peripheral edge, it is tightly clamped in the area of the peripheral wall of the housing chamber 7.
- the tappet-side attachment is expediently carried out by means of two support disks 49 which flank them axially, between which they are clamped with the edge of their central opening 47.
- These support disks 49 can protrude radially very close to the peripheral surface of the housing chamber 7.
- a respective compensation chamber 44 is sealed off from the adjacent supply duct 10 and ventilation duct 12 by means of the annular seal 33, which the closure body 22, 22 'projecting into the through opening 32 wearing.
- the compensation wall 43 and the application surface 34 assigned to a respective compensation chamber 44 form movable boundary walls of the compensation chamber 44 in question.
- the pressure prevailing in the compensation chamber 44 thus acts on both the inner surface 52 of the compensation wall 43 facing the compensation chamber 44 and the facing application surface 34 of the adjacent closure body 22. 22 '.
- two branch channels 53 are provided in the interior of the valve housing 2, both branching off from the consumer channel 11 and each opening into one of the equalization spaces 44. In this way it is ensured that the pressure prevailing in the consumer channel 11 is also present in both equalizing spaces 44 at the same time.
- the two outer spaces 45 are expediently connected to the surroundings, for which purpose suitable connecting channels 54 may be present.
- the outer surface 55 of the compensating wall 43 axially opposite the compensating space 44 is constantly subjected to atmospheric pressure.
- closure body 22 controlling the inflow opening 18 is pressure-force compensated with regard to the supply pressure.
- the oval-shaped closure body surfaces 56, 56 ' which are exposed to the pressure prevailing in the associated enlargement 16 and which are present on the radial collar 27 are of the same size. The same also applies to the closure body 22 'which controls the vent opening 19, so that there is also compensation on the vent side.
- the closing force acting on the closure bodies 22, 22 ' is applied solely by the spring devices 26.
- the actuating plunger 35 is deflected from its neutral position in one direction or the other with the aid of the drive device 3.
- the force is introduced via an actuating plunger 57 of the drive device 3, which acts on one (42 ′) of the two end sections of the actuating plunger 35.
- there is a fixed connection so that both compressive and tensile forces can be transmitted.
- the adjusting force to be applied in the exemplary embodiment is independent of the pressure of the working fluid. This also applies if either the inflow opening 18 or the vent opening 19 is opened to a greater or lesser extent.
- the inflow opening 18 is open and fluid can flow from the supply duct 10 to the consumer duct 11.
- the vent opening 19 is still closed.
- the closure bodies 22, 22 ' as well as on the inner surfaces 52 of FIG Compensating walls 43 to the pressure prevailing in the supply channel, so that a compensation of the pressure forces is still present, only at a higher pressure level.
- the actuating forces required for actuation are therefore at least essentially independent of the valve position.
- the drive device 3 is equipped with an electromagnet device 58, which is designed as a plunger armature drive device.
- the setting plunger 57 assumes a certain axial position.
- a displacement sensor 61 is integrated, so that displacement control can be implemented in connection with a control device (not shown in more detail). A so-called proportional operation is readily possible, in which the actuating plunger 35 can be positioned continuously.
- the design of the drive device 3 is basically arbitrary.
- it could also include a so-called proportional magnet, the armature of which works as a setting plunger 57 and mechanical pressure forces can initiate in the actuating plunger 35, wherein a spring device can be provided for resetting, which works on the opposite end against the compensating wall 43 there.
- the valve can be used as a pressure control valve.
- regulation can take place in such a way that there is always a certain outlet pressure on the consumer side.
- the valve can be used not only as a proportional directional control valve, but also as a simple switching valve, in which the closure bodies can only be switched between two positions and cannot assume any intermediate positions.
- the advantages with regard to the compensation of fluid-induced pressure forces are also retained here. It is thus possible to implement different types of valves without great effort.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
- Magnetically Actuated Valves (AREA)
- Electrically Driven Valve-Operating Means (AREA)
- Temperature-Responsive Valves (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29515295U DE29515295U1 (de) | 1995-09-23 | 1995-09-23 | Ventil |
DE29515295U | 1995-09-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0764803A1 true EP0764803A1 (fr) | 1997-03-26 |
EP0764803B1 EP0764803B1 (fr) | 2000-03-22 |
Family
ID=8013400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96110033A Expired - Lifetime EP0764803B1 (fr) | 1995-09-23 | 1996-06-21 | Soupape |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0764803B1 (fr) |
DE (2) | DE29515295U1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0921322A2 (fr) | 1997-12-06 | 1999-06-09 | Robert Bosch Gmbh | Soupape de réglage pneumatique |
DE102005051324A1 (de) * | 2005-08-04 | 2007-02-08 | Brueninghaus Hydromatik Gmbh | Spülventil für einen hydraulischen Kreislauf |
EP2110591A1 (fr) * | 2008-04-18 | 2009-10-21 | Festo AG & Co. KG | Soupape |
CN112840149A (zh) * | 2018-10-11 | 2021-05-25 | 纬湃技术有限公司 | 阀 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1988440A1 (fr) * | 2007-05-03 | 2008-11-05 | Kongsberg Automotive AB | Vanne pour fluide |
FR2963444B1 (fr) * | 2010-07-30 | 2013-05-17 | Faurecia Sys Echappement | Systeme de dosage de gaz et procede associe. |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3332440A (en) * | 1965-03-19 | 1967-07-25 | Robertshaw Controls Co | Sequentially-actuated multiplefunction control valve |
US3540478A (en) * | 1966-11-02 | 1970-11-17 | Yamada Yuki Seizo Co Ltd | Diaphragm type pneumatic logic element |
DE1650571B2 (de) * | 1967-10-31 | 1976-11-18 | Teldix Gmbh, 6900 Heidelberg | Dreiwegeventil |
FR2343950A1 (fr) * | 1976-03-12 | 1977-10-07 | Elevator Equip | Soupape unitaire de commande d'approche de niveau superieur pour ascenseur |
JPH05158552A (ja) * | 1991-12-06 | 1993-06-25 | Ckd Corp | 圧力制御弁 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8420676U1 (de) * | 1984-07-11 | 1984-09-27 | Jesco-Dosiertechnik Gmbh & Co Kg, 3002 Wedemark | Pneumatisches umschaltventil, insbesondere fuer chlorgasanlagen |
-
1995
- 1995-09-23 DE DE29515295U patent/DE29515295U1/de not_active Expired - Lifetime
-
1996
- 1996-06-21 DE DE59604744T patent/DE59604744D1/de not_active Expired - Fee Related
- 1996-06-21 EP EP96110033A patent/EP0764803B1/fr not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3332440A (en) * | 1965-03-19 | 1967-07-25 | Robertshaw Controls Co | Sequentially-actuated multiplefunction control valve |
US3540478A (en) * | 1966-11-02 | 1970-11-17 | Yamada Yuki Seizo Co Ltd | Diaphragm type pneumatic logic element |
DE1650571B2 (de) * | 1967-10-31 | 1976-11-18 | Teldix Gmbh, 6900 Heidelberg | Dreiwegeventil |
FR2343950A1 (fr) * | 1976-03-12 | 1977-10-07 | Elevator Equip | Soupape unitaire de commande d'approche de niveau superieur pour ascenseur |
JPH05158552A (ja) * | 1991-12-06 | 1993-06-25 | Ckd Corp | 圧力制御弁 |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0921322A2 (fr) | 1997-12-06 | 1999-06-09 | Robert Bosch Gmbh | Soupape de réglage pneumatique |
EP0921322A3 (fr) * | 1997-12-06 | 2003-05-21 | Robert Bosch Gmbh | Soupape de réglage pneumatique |
DE102005051324A1 (de) * | 2005-08-04 | 2007-02-08 | Brueninghaus Hydromatik Gmbh | Spülventil für einen hydraulischen Kreislauf |
EP2110591A1 (fr) * | 2008-04-18 | 2009-10-21 | Festo AG & Co. KG | Soupape |
CN112840149A (zh) * | 2018-10-11 | 2021-05-25 | 纬湃技术有限公司 | 阀 |
US11578804B2 (en) | 2018-10-11 | 2023-02-14 | Vitesco Technologies GmbH | Valve |
CN112840149B (zh) * | 2018-10-11 | 2024-04-05 | 纬湃技术有限公司 | 阀 |
Also Published As
Publication number | Publication date |
---|---|
DE29515295U1 (de) | 1995-11-23 |
EP0764803B1 (fr) | 2000-03-22 |
DE59604744D1 (de) | 2000-04-27 |
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