EP0686775A1 - Dispositif de vanne électropneumatique - Google Patents

Dispositif de vanne électropneumatique Download PDF

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Publication number
EP0686775A1
EP0686775A1 EP95106525A EP95106525A EP0686775A1 EP 0686775 A1 EP0686775 A1 EP 0686775A1 EP 95106525 A EP95106525 A EP 95106525A EP 95106525 A EP95106525 A EP 95106525A EP 0686775 A1 EP0686775 A1 EP 0686775A1
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EP
European Patent Office
Prior art keywords
valve device
valve
pilot
standard housing
connections
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
Application number
EP95106525A
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German (de)
English (en)
Other versions
EP0686775B2 (fr
EP0686775B1 (fr
Inventor
Francisco Dipl. Ing. Krauser
Pierre Bonino
Emile Francoz
Rolf Dipl. Ing. Meier
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Publication date
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Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0686775A1 publication Critical patent/EP0686775A1/fr
Application granted granted Critical
Publication of EP0686775B1 publication Critical patent/EP0686775B1/fr
Publication of EP0686775B2 publication Critical patent/EP0686775B2/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
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool valves

Definitions

  • the invention is based on an electropneumatic valve device for independently controlling two. Consumer connections according to the type specified in the preamble of claim 1.
  • Such an electropneumatic valve device for independently controlling two consumer connections from DE 42 26 539 A1 is already known, as is used in valve carrier systems for better utilization of the limited valve positions, as a result of which different valve series can be arranged simultaneously on one valve position.
  • electromagnetically operated 3/2-way valves are mounted on a connection plate having the two consumer connections on both end faces. Both 3/2 valves and the connection plate are seated on an adapter plate, which in turn is placed on a base plate of the valve carrier system.
  • the adapter plate also contains the two electrical plug connections for the two 3/2-way valves and a plug connection for connection to the Base plate.
  • valve device Although a larger number of control functions can be accommodated with a predetermined number of valve positions with this valve device due to better use of space, this valve device is relatively complex in terms of costs and installation space. The flow rates to the consumer connections are also limited with this design, especially since directly controlled 3/2-way valves are used. The large number of plug connections and components also increases the susceptibility to faults during operation and makes assembly more difficult.
  • an electromagnetically actuated directional control valve which is designed as a 5/2 valve, in which both solenoid valves used for pilot control are arranged on a single end face of the actual directional control valve.
  • the directional valve does not need an adapter plate with a single electrical connection part; however, an intermediate plate having a plurality of control channels is required between the actual housing and the pilot valves.
  • the drive pistons for the main control spool are guided directly in the directional control valve housing, which causes a complex construction.
  • this 5/2-way valve is only designed for a single control function, as is required to control a double-acting consumer. In many applications, an optimal design is not possible, especially in valve carrier systems.
  • EP 0 139 259 B1 discloses an electrohydraulic control valve in which two electromagnetically actuated, pilot-operated, 3/2-way valves are installed coaxially to one another. Both 3/2 valves are identical to each other and in a complex Seat valve design, so that a total of four switching combinations are possible and the connected double-acting motor can not only be moved in both directions, but can also be brought into a locked position and a floating position.
  • This valve is also designed so that it is only suitable for a control function for controlling a double-acting consumer.
  • the poppet valve design used in hydraulics is therefore not suitable for pneumatic valve carrier systems.
  • the electropneumatic valve device for independently controlling two consumer connections with the characterizing features of the main claim has the advantage that a given installation space can be better utilized with control functions with a simple and inexpensive construction.
  • different valve series can be used together in valve carrier systems in one valve location, whereby above all two 3/2-way valves can be easily accommodated.
  • higher flow rates can be achieved, as is usually the case with a 5/2-way valve.
  • a separate connection plate having the consumer connections can now be omitted.
  • An adapter plate is also no longer required, which not only reduces installation space and costs, but also simplifies assembly and reduces susceptibility to faults.
  • the valve device can easily be equipped for different functions by using corresponding longitudinal slides with differently arranged control edges, so that functions such as normally open, normally closed or combinations thereof can be implemented.
  • the most Standard housing flanged pilot housing with integrated pilot valves and electrical connection favors a cost-saving and compact design.
  • An embodiment according to claim 2 is advantageous, as a result of which a cheap, large-volume standard housing can be used without major changes in order to implement the valve device in a simple and space-saving and robust manner. It is also expedient if the valve device is equipped with drive pistons mounted outside the standard housing, which favors inexpensive and easy manufacture.
  • a design according to claims 4 to 6 is favorable, as a result of which a combined resetting by spring force and pneumatic force takes place in that the longitudinal slide is acted upon by the inlet pressure on its smaller effective area on the end face. It is also advantageous if the standard housing is designed according to claim 6, which supports a simple and inexpensive construction of the valve device.
  • the valve device can also be designed in a favorable manner in accordance with claims 9 to 11 in such a way that any combinations of the functions normally open or normally closed are possible by means of easily replaceable longitudinal slides. Further advantageous embodiments result from the remaining claims, the description and the drawing.
  • FIG. 1 shows a partial longitudinal section through an electropneumatic valve device for independent control of two consumer connections in a simplified representation
  • FIGS. 2 and 3 show a second or third exemplary embodiment of the electropneumatic valve device with other longitudinal slides for different functional variants.
  • valve device 10 shows a simplified representation of an electropneumatic valve device 10, partly in longitudinal section and partly schematically, of how it can be mounted in a valve carrier system on a valve location on a base plate.
  • the valve device 10 essentially consists of a valve module 11, a pilot control module 12 and a cover 13, all of which are attached to one another.
  • the valve module 11 has a standard housing 14 of a 5/2-way valve, in which a continuous slide bore 15 runs between its two end faces 16, 17.
  • a continuous slide bore 15 runs between its two end faces 16, 17.
  • five adjacent chambers 18, 19, 21, 22, 23 are formed by annular extensions, of which the central chamber 21 is connected to an inlet connection 24 designated by P.
  • the chambers 19 and 22 lying on both sides of the third chamber 21 are connected to the consumer connections 25, 26, which are designated A and B here.
  • the remaining outer chambers 18, 23 are connected to return ports 27, 28, which are denoted by R. While the two consumer connections 25, 26 are led upwards in the standard housing 14 to a transverse side 29, the inlet connection 24 and the two return connections 27, 28 run into a lower transverse side 31.
  • a first and a second longitudinal slide 32, 33 are now installed in the slide bore 15 from both end faces 16 and 17, and are guided in the slide bore 15 in a sealed and sliding manner.
  • Both longitudinal slides 32, 33 are identical to one another and each have two control edges 34, 35 for the function of a 3/2-way valve.
  • Each longitudinal slide 32, 33 has an outer piston section 36 with which it can strike the standard housing 14 and thus marks an end position of the longitudinal slide 32 or 33.
  • a restoring spring 37 bears against this piston section 36 and is supported with its other end in the standard housing 14. Since the two longitudinal slides are of the same design, the same components on the second longitudinal slider 33 are identified by the same reference numerals, but with an apostrophe.
  • the pilot control module 12 is attached to the first end face 16 of the standard housing 14 and accommodates a first pilot control valve 38 and a second pilot control valve 39 in its interior. Both pilot valves 38, 39 are identical to one another and designed as 3/2-way valves which can be actuated electromagnetically against spring force.
  • the first pilot valve 38 serves to control the first longitudinal slide 32, the second pilot valve 39 correspondingly for the second longitudinal slide 33.
  • In the pilot module 12 there is also a recess 41 which is open towards the end face 16 and in which a first Drive piston is slidably guided.
  • the drive piston 42 is thus mounted outside the standard housing 14 in the pilot housing 43 of the valve module 11, and forms a component which is separate from the first longitudinal slide 32 and is mounted concentrically with the longitudinal slide and can actuate the first longitudinal slide 32 when pressure is applied in a pressure chamber 44.
  • the pressure chamber 44 is connected to the pilot valve 38 via a first control line 45.
  • the first control valve 38 is connected to the inlet connection 24 via a pressure control line 46.
  • the second pilot valve 39 is also connected to this pressure control line 46 in parallel to the first pilot valve 38.
  • a sequence control line 47 leads from the first pilot valve 38 to the return connection 27, the second pilot valve 39 likewise being connected in parallel here.
  • An electrical plug-in connection 48 is also arranged on the pilot module 12, via which the control signals for the two pilot valves 38, 39 can be input.
  • the cover 13 On the second end face 17 of the valve module 11, the cover 13 is attached, which receives a second drive piston 51 in a pocket-like recess 49.
  • This drive piston 51 is also formed separately from the second longitudinal slide 33 and is therefore only supported in the cover 13.
  • the drive piston 51 delimits a pressure chamber 52, which has a connection to the second pilot valve 39 via a second control line 53, this control line 53 being led through the standard housing 14 into the pilot housing 43.
  • the first pilot valve 38 and the first longitudinal slide 32 with the associated drive piston 42 thus form parts of a pilot-controlled, first 3/2-way valve 55, while the second pilot valve 39 with the second longitudinal slide 33 and the drive piston 51 forms a second, pilot-controlled 3/2-way valve, both of which can be controlled independently of one another.
  • both directional control valves 55, 56 the control edges 34, 35 on the longitudinal slides 32 and 33 are designed in such a way that the valves have a type which is referred to as "normally closed". This means that when the pilot valves 38, 39 are not energized, the longitudinal slides 32, 33 each assume their spring-centered end position, in which the connection from the inlet connection 24 to the associated consumer connection 25 or 26 is blocked.
  • valve device 10 The mode of operation of the electropneumatic valve device 10 is explained as follows, the relationship between such a valve device 10 and a base plate (not shown in more detail) in a valve carrier system being assumed to be known per se:
  • the first 3/2-way valve 55 and the second 3/2-way valve 56 are shown switched off.
  • the first pilot valve 38 is actuated magnetically against spring force, so that supply air can flow from the inlet connection P via the pressure control line 46, the pilot valve 38 and the first control line 45 into the first pressure chamber 44 and act there on the first drive piston 42.
  • the pressurized effective cross section of the drive piston 42 is substantially larger than the end face of the first longitudinal slide 32 acted upon by the inlet pressure in the chamber 21, so that the longitudinal slide 32 is displaced into the working position against the force of the return spring 37.
  • the drive piston 42 which is mounted separately in the pilot housing 43, cannot exert any radial forces on the longitudinal slide 32.
  • the first control edge 34 is located within the chamber 21, so that supply air can flow unimpeded from the inlet connection 24 to the first consumer connection 25.
  • the second control edge 35 blocks the connection from the consumer connection 25 to the return connection 27. If the excitation of the first pilot valve 38 is switched off, the pressure chamber 44 is relieved via the first control line 45 and the starting line 47 to the return connection 27, so that the return spring 37 pushes the first longitudinal slide 32 together with the drive piston 42 to the left into a rest position, whereby the first control edge 34 interrupts the connection from the inlet connection 24 to the consumer connection 25, while the second control edge 35 relieves the load connection 25 to the return connection 27.
  • the second longitudinal slide 32 can be actuated in a corresponding manner by the drive piston 51, so that the function of the second directional valve 56 can be used independently of that of the first directional valve 55.
  • the function of the second directional valve 56 can be used independently of that of the first directional valve 55.
  • the standard housing 14 and the pilot module 12 are like this trained that they can be mounted directly on the base plate in a valve carrier system without additional adapter plate.
  • the design of the drive pistons 42, 51 as components which are separate from the longitudinal slides and which are mounted outside of the standard housing 14 in the attached pilot control housing 43 or cover 13 prevents disruptive influences on the storage and guidance of the longitudinal slides 32, 33.
  • FIG. 2 shows a second electropneumatic valve device 60 which differs from that according to FIG. 1 only in that it uses two other longitudinal slides 61, 62 which are identical to one another.
  • the position of the control edges 34, 35 is selected so that both valves have the "normally open” function. This means that when the valves are not energized, the connection from the inlet connection 24 to the consumer connection 26 is open, while the connection from the latter to the return connection 28 is blocked; this is shown in FIG. 2 with the longitudinal slides 61, 62 in the rest position.
  • both directional control valves are designed for a “normally open” function.
  • the mode of operation of the valve device 60 corresponds otherwise to that of the valve device 10.
  • FIG. 3 shows in simplified form a third valve device 70, in which a first longitudinal slide 32 for the "normally closed” function is installed in the standard housing 17 in the first directional valve 55 and a second longitudinal slide 62 for the "normally open” function is installed in the second directional valve 56 are.
  • a first longitudinal slide 32 for the "normally closed” function is installed in the standard housing 17 in the first directional valve 55 and a second longitudinal slide 62 for the "normally open” function is installed in the second directional valve 56 are.
  • the standard housing 14 can also be used in such a way that the middle connection 24 is assigned R and the two connections 27, 28 are assigned P if necessary. Designs are also possible in which the longitudinal slide and drive piston are formed in one piece. The position of the longitudinal slide 32, 62 in Fig. 3 can also be interchanged.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Driven Valves (AREA)
  • Valve Housings (AREA)
EP95106525A 1994-05-07 1995-04-29 Dispositif de vanne électropneumatique Expired - Lifetime EP0686775B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4416285 1994-05-07
DE4416285A DE4416285A1 (de) 1994-05-07 1994-05-07 Elektropneumatische Ventileinrichtung

Publications (3)

Publication Number Publication Date
EP0686775A1 true EP0686775A1 (fr) 1995-12-13
EP0686775B1 EP0686775B1 (fr) 1998-07-08
EP0686775B2 EP0686775B2 (fr) 2001-12-05

Family

ID=6517648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95106525A Expired - Lifetime EP0686775B2 (fr) 1994-05-07 1995-04-29 Dispositif de vanne électropneumatique

Country Status (2)

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EP (1) EP0686775B2 (fr)
DE (2) DE4416285A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0819874A3 (fr) * 1996-07-09 1998-08-05 Ab Rexroth Mecman soupape de régulation de débit
EP1130273A1 (fr) * 2000-02-29 2001-09-05 Ab Rexroth Mecman Soupage à voies multiples avec élément de séparation amovible
FR2821128A1 (fr) * 2001-02-20 2002-08-23 Bosch Gmbh Robert Distributeur pneumatique
EP1036942A3 (fr) * 1999-03-18 2003-02-12 Hoerbiger Hydraulik GmbH Dispositif de commande pour un vérin
DE102005002699A1 (de) * 2005-01-19 2006-07-27 Sauer-Danfoss Aps Bremsventilanordung
WO2009062564A1 (fr) * 2007-11-14 2009-05-22 Hydac Filtertechnik Gmbh Mécanisme hydraulique à soupape

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19623446A1 (de) 1996-06-12 1997-12-18 Bosch Gmbh Robert Elektropneumatisch vorgesteuertes Wegeventil
DE19630798A1 (de) * 1996-06-22 1998-01-02 Rexroth Mannesmann Gmbh Vorsteuerung für zwei hydraulisch betätigbare Wegeventile
NL1003536C2 (nl) * 1996-07-08 1998-01-12 Applied Power Inc Schakelinrichting voor een dubbelwerkende hydraulische cilinder.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139259B1 (fr) 1983-10-07 1988-04-27 Deere & Company Valve pour la commande de l'écoulement d'un fluide entre une pompe, un réservoir et un dispositif hydraulique à double effet
DE4020024A1 (de) 1990-06-23 1992-01-02 Bosch Gmbh Robert Elektromagnetisch betaetigbares wegeventil
GB2263154A (en) * 1991-12-27 1993-07-14 Mannesmann Ag Valve assembly module
DE4226539A1 (de) 1992-08-11 1994-02-17 Bosch Gmbh Robert Elektropneumatische Ventilbaugruppe
DE4305607A1 (de) * 1993-02-24 1994-08-25 Bosch Gmbh Robert Ventilblock

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4400760C2 (de) † 1994-01-13 1997-03-27 Festo Kg Mehrwegeventil

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139259B1 (fr) 1983-10-07 1988-04-27 Deere & Company Valve pour la commande de l'écoulement d'un fluide entre une pompe, un réservoir et un dispositif hydraulique à double effet
DE4020024A1 (de) 1990-06-23 1992-01-02 Bosch Gmbh Robert Elektromagnetisch betaetigbares wegeventil
GB2263154A (en) * 1991-12-27 1993-07-14 Mannesmann Ag Valve assembly module
DE4226539A1 (de) 1992-08-11 1994-02-17 Bosch Gmbh Robert Elektropneumatische Ventilbaugruppe
DE4305607A1 (de) * 1993-02-24 1994-08-25 Bosch Gmbh Robert Ventilblock

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0819874A3 (fr) * 1996-07-09 1998-08-05 Ab Rexroth Mecman soupape de régulation de débit
EP1036942A3 (fr) * 1999-03-18 2003-02-12 Hoerbiger Hydraulik GmbH Dispositif de commande pour un vérin
US6561221B1 (en) 1999-03-18 2003-05-13 Hoerbiger Hydraulik Gmbh Control arrangement for a working cylinder
EP1130273A1 (fr) * 2000-02-29 2001-09-05 Ab Rexroth Mecman Soupage à voies multiples avec élément de séparation amovible
FR2821128A1 (fr) * 2001-02-20 2002-08-23 Bosch Gmbh Robert Distributeur pneumatique
DE102005002699A1 (de) * 2005-01-19 2006-07-27 Sauer-Danfoss Aps Bremsventilanordung
DE102005002699B4 (de) * 2005-01-19 2011-02-17 Sauer-Danfoss Aps Bremsventilanordung
WO2009062564A1 (fr) * 2007-11-14 2009-05-22 Hydac Filtertechnik Gmbh Mécanisme hydraulique à soupape
US8479769B2 (en) 2007-11-14 2013-07-09 Hydac Filtertechnik Gmbh Hydraulic valve device

Also Published As

Publication number Publication date
DE59502737D1 (de) 1998-08-13
DE4416285A1 (de) 1995-11-09
EP0686775B2 (fr) 2001-12-05
EP0686775B1 (fr) 1998-07-08

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