WO2012065777A1 - Soupape à carter en matière plastique - Google Patents

Soupape à carter en matière plastique Download PDF

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Publication number
WO2012065777A1
WO2012065777A1 PCT/EP2011/066438 EP2011066438W WO2012065777A1 WO 2012065777 A1 WO2012065777 A1 WO 2012065777A1 EP 2011066438 W EP2011066438 W EP 2011066438W WO 2012065777 A1 WO2012065777 A1 WO 2012065777A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
actuator
bottom plate
housing part
sealing
Prior art date
Application number
PCT/EP2011/066438
Other languages
German (de)
English (en)
Inventor
Markus Ulrich
Christoph Waletzek
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2012065777A1 publication Critical patent/WO2012065777A1/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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/10—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid with additional mechanism between armature and closure member
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0227—Check valves or pivoted valves with the valve members swinging around an axis located at the edge of or outside the valve member
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • 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
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift valves
    • F16K31/0627—Lift valves with movable valve member positioned between seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2066—Selective catalytic reduction [SCR]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Definitions

  • Valve with a housing made of plastic The invention relates to a valve according to the preamble of claim 1.
  • Such a valve is used for example as a 4/2 way valve in a conveyor system for a liquid reducing agent.
  • the conveyor system serves to
  • liquid reducing agent may be, for example, a urea-water solution.
  • a 4/2-way valve in which an actuator actuates an actuator of the valve.
  • the actuator can reciprocate the actuator between two switch positions.
  • the actuator has approximately longitudinally in the longitudinal direction on a bearing about which the actuator is rotatable or tiltable. In each of the two valve positions is a
  • Line released for transporting a liquid The closing of the respective other line is arranged by a arranged on the actuator
  • Realized sealing element which cooperates with a valve seat.
  • the pressing force is transmitted from the actuator via the actuator to the sealing element.
  • a further directional control valve which comprises two housing parts bolted together. Between the housing parts, an actuator is sealingly clamped.
  • This actuator has a metallic core, which is encapsulated with an elastic plastic. In this case, a circular sealing ring is formed.
  • Formed sealing surfaces which cooperate with the arranged in the housing parts sealing seats.
  • the valve according to the invention has a bottom plate and a valve cover made of plastic, which are connected to one another in the region of a joining surface cohesively.
  • thermoplastic material it is possible to realize the functions "connect” and "seal" by a material-locking connection.This reduces the manufacturing costs and simplifies assembly, malfunctions, for example, by inlaid seals and the like more can be safely ruled out
  • Production of the cohesive connection between the valve cover and base plate according to the invention can be automated very well, so that a fully automatic assembly of the valve according to the invention is possible.
  • the first joining surface is formed by a circumferential rib and a complementary to the rib-shaped counter surface, wherein the rib and the counter surface before they are materially connected to each other by a non-positive interference fit with each other.
  • Joining surface prevailing press fit ensures an intimate connection of the two joining partners and it is also ensured that after joining a mechanically highly resilient and liquid-tight connection between the base plate and the valve cover is present.
  • the production of this Connection is very easy to automate, which is beneficial to the
  • valve according to the invention can also be materially connected to one another in the region of a second joining surface with the housing part of an actuator which actuates the valve.
  • a press fit is produced before the
  • liquid channels are formed in the housing part through which - depending on the switching position of the valve - urea-water solution or another liquid medium flows.
  • Valve cover and the housing part a seal, preferably made of a thermosetting two-component sealant provided.
  • This thermosetting two-component sealant may be prior to joining the valve to the
  • Housing part are introduced into a correspondingly prepared groove of the valve cover. Subsequently, as long as the hardening sealant is still malleable, the valve and the housing part are positively connected to each other and then welded. In this position then cures the sealant and the desired seal is made. Alternatively, it is also possible to weld the components together liquid-tight.
  • valve cover and a bottom plate of the valve surround the plastic jacket in the interior of the valve and fix, that the actuator between the first and the second valve position is movable.
  • the plastic sheath of the actuator forms the bearing for the actuator and seals the valve to the outside.
  • the plastic casing according to the invention is clamped between the valve cover and the bottom plate and leaves by their deformability, the necessary adjusting movement of the actuator between the first and second switching position.
  • the plastic sheath is designed so that it out of the
  • the anchor is arranged in an actuating part, wherein the
  • Actuator is coupled to the valve.
  • the armature movement can also be supported by spring elements.
  • the actuator is designed as a fork-shaped lever, wherein the free ends of the fork two substantially
  • the main body of the fork-shaped actuator is a metal part to which, for example, an elastomer such as ethylene-propylene-diene rubber (EPDM) is vulcanized.
  • EPDM ethylene-propylene-diene rubber
  • a bonding agent can be applied to create a permanent connection.
  • Elastomers are, for example, for use in an SCR system, urea resistant and also sufficiently dimensionally stable, but still elastically deformable.
  • elastomers can deform elastically under tensile and compressive load and then return to their original, undeformed shape. They also have good sealing properties.
  • the sealing surfaces are arranged conically at the ends of the actuator according to the adjustment angle of the actuator. This allows the valve seats in the bottom plate and the
  • valve seats at the located in the interior of the valve ends of the channels are preferably rounded and have a small contact surface, so that a high surface pressure is generated despite a small actuating force of the actuator by this shaping. This will be a high
  • the sealing effect can be further improved in this area of the valve by insertable O-rings. An internal leakage is thereby advantageously avoided.
  • the bottom plate on its side facing away from the actuator on a recess which serves to receive a flat gasket with channel guides.
  • the flat gasket can be inserted precisely into the recess. This prevents the flat gasket from slipping out of its intended position.
  • the flat gasket is arranged between the bottom plate and a housing part of the actuator.
  • the beads have the function of a biting edge.
  • the valve cover is designed to encapsulate the entire valve. In this way, a structural unit is created.
  • Valve cover substantially protruding and circumferential rib by a
  • Press fit can be used and then welded together.
  • the rib is dimensioned in such a way that a press fit is created when joining both components.
  • This interference fit holds the components together and presses the parts against each other during melting, for example during laser welding.
  • the actuator between a first and a second switching position in the axial direction by the armature is movable, wherein the armature is part of an actuator. The actuator is in the one coupled to the valve
  • the linear actuator in this case comprises an electromagnet which moves the armature designed as an armature axially.
  • the electromagnet may comprise a profiled pin for stabilization and positioning, which in one
  • Receiving device of a housing of the actuating part can be locked.
  • Fig. 1 the environment of the invention
  • FIG. 2 shows an illustration of a 4/2-way valve from FIG. 1 with an actuating part in a longitudinal section
  • Fig. 3 is a detailed illustration of the 4/2-way valve of Figure 2 in one
  • FIG. 4 shows a fork-shaped actuator of Figure 2 or 3 in a plan view.
  • Fig. 5 is a section A - A of Figure 4.
  • FIG. 6 shows a bottom plate from FIG. 3 with a flat gasket in detail
  • FIG. 8 shows a further longitudinal section through the valve from FIG. 2.
  • SCR Selective Catalytic Reduction
  • Exhaust gas aftertreatment device usually comprises, in addition to the SCR catalytic converter 16, essentially also an oxidation catalytic converter, a particle filter and an oxidation catalytic converter.
  • the flow direction of the exhaust gas through the exhaust pipe 14 is indicated by an arrow 18.
  • an inlet pipe 20 for the urea-water solution is provided, which introduces the urea-water solution into the exhaust pipe 14.
  • a metering of the urea-water solution takes place via a preferably electrically operated metering module 22, which is influenced by signals of a NO x sensor 23, which is arranged downstream of the SCR catalytic converter 16.
  • a first line (Redutechnischsstoffzutax) 26 is provided.
  • a second line 28 is arranged, which is formed to an input of an electrically operated 4/2 way valve 48. Further information about the 4/2-way valve 48 follows further back.
  • a pressure in the second conduit 28 is monitored by a pressure sensor 32.
  • the conveyor system 12 also includes a storage tank 34 for the urea-water solution.
  • the storage tank 34 has a heater 33 for heating the urea-water solution; the corresponding temperature of the urea-water solution is monitored by a temperature sensor 35.
  • the urea-water solution is pumped by a pump 36 from the storage tank 34 via a suction line 37 and a filter 38 in a normal position of the 4/2-way valve 48 shown in Figure 1 in a third line 40. Behind the pump 36, a section 40 'of the third line opens again into another port of the 4/2-way valve 48, after which the urea-water solution of the second line 28, further the first line 26 and ultimately the metering module 22 is fed.
  • the third conduit 40 ' has a branch in a return line 42 for the urea-water solution. In the return line 42, a throttle 44 is additionally arranged.
  • the 4/2-way valve 48 is switched to the second switching position.
  • the 4/2-way valve 48 is held in the normal position by the spring force of a spring element.
  • Figure 2 shows an illustration of a 4/2-way valve 48 according to the invention with an actuator 46 in a longitudinal section.
  • the actuator 46 serves to switch the two switching positions of the valve 48 and is coupled to the valve 48.
  • the solenoid 52 is pressed by a profiled pin 54 in a frusto-conical receiving bore of the housing 56 of the actuating member 46 and is thereby fixed. An additional screw or the like is not required. This facilitates a fully automatic assembly.
  • the actuator 46 includes an axially movable armature 50 that is moved by a solenoid 52.
  • the solenoid 52 can thus two positions
  • a pivot receiver 66 is arranged for a preferably made of metal fork-shaped actuator 68.
  • the pivot receiver 66 engages in the fork-shaped actuator 68.
  • the actuator 68 is used for switching the 4/2-way valve 48th
  • FIG. 3 shows the valve 48 in detail for a more detailed explanation.
  • the valve 48 essentially comprises a bottom plate 72, a projecting into the valve 48 part of the
  • the valve cover 74 may form the largest part of a housing of the valve 48.
  • the actuator 68 is arranged between the valve cover 74 and the bottom plate 72. Through a recess 75 between the bottom plate 72 and valve cover 74, the actuator 68 is given sufficient freedom to the tilting or rotational movement between the two Perform switching positions.
  • fork-shaped actuator 68 is coated with an elastic plastic 76, preferably an elastomer, by the plastic was vulcanized onto the actuator 68. If necessary, an adhesion promoter can be applied before vulcanization.
  • annular bead 78 and at the free end (the "prongs" of the fork) two sealing surfaces 80, 81 are produced for sealing channels 84, 85 arranged in the valve 48.
  • the channels 84, 85 respectively at their ends Specially designed valve seats 82, 83. Further details are given below:
  • the annular bead 78 forms a sealing ring which prevents the medium inside the valve 48 from entering the environment, for example through the recess 75.
  • valve cover 74 has a preferably formed from elastomer and circumferential around the circumference seal 87, which is also intended to prevent that located in the interior of the valve 48 medium, for example, urea-water solution, exits.
  • seal 87 and a weld can be provided instead of the seal 87 and a weld.
  • valve 48 and actuator 46 can be achieved.
  • FIGS. 4 and 5 show Detailed illustrations of the actuator 68 in FIGS. 4 and 5, wherein FIG. 4 shows a top view of the actuator fork 68 and FIG. 5 shows a section A - A marked in FIG. , In normal operation of the 4/2-way valve 48, the actuator 68 through the
  • the actuator 68 has a bead 78 made of plastic.
  • the bead 78 forms a pivot point for the actuator 68, wherein the actuator 68 is locked between the valve cover 74 and the bottom plate 72.
  • the required for turning or tilting of the actuator 68 bearing is formed by the plastic sheath 76.
  • a flat gasket 92 preferably made of an elastomer used.
  • Figure 6 shows the bottom plate 72 and the
  • the bottom plate 72 has in the interior a recess 93 into which the flat gasket 92 can be inserted accurately.
  • the flat gasket 92 is formed as a labyrinth seal and therefore has slots and
  • a bore 100 serves to receive a pin 101. This will be the
  • sealing ribs 96 are provided in the bottom plate 72 and / or the housing part, which achieve the actual sealing effect.
  • a special geometry wherein a sealing rib 96 is provided in the interior of the valve 48 and two sealing ribs 96 are provided on the flat gasket 92, ensures a permanent tightness at this
  • the flat gasket 92 thus prevents leakage of urea-water solution at the transition between the valve 48 and the housing part 56th
  • valve 48 An assembly of the valve 48 will be explained with reference to FIG. During assembly, successively the flat gasket 92 (not shown in FIG. 7) on the bottom plate 72, O-rings 98 as additional sealing means, which place the actuator 68 and finally the valve cover 74 in the manner of a sandwich. There are no screw connections required.
  • the valve cover 74 is formed to encapsulate the entire valve 48. In this way, a structural integral unit is created, which is welded.
  • FIG. 8 shows a further longitudinal section through the valve 48.
  • the valve cover 74 encapsulates the valve 48 by being fitted onto the base plate 72.
  • a specially designed for this case Sch healthrippengeometrie is provided which generates a bias on this connection by between the bottom plate 72 and the valve cover 74, and between the bottom plate 72 and a separate housing part 56 is formed an oversize, the on the one hand compresses the assemblies and on the other hand during melting during welding, for example, a laser welding, the parts against each other.
  • the bottom plate 72 is preferably made of a laser-transparent and the valve cover 74 made of a laser-absorbing material.
  • the joining surfaces which are used to produce the welds are identified by reference numerals 102a and 102b.
  • valve 48 As an alternative, it is also possible to connect the valve 48 with only a single weld 102c, by connecting the connection between the housing part 56 and the Valve cover 74 is executed. For this it is necessary that the housing part 56 is made of laser-transparent and the valve cover 74 made of laser-absorbent material.
  • the advantage of this alternative to the above variant is that it can be dispensed with a weld.
  • All welds 102 are performed so that the operating pressure occurring in the interior of the valve 48 is maintained.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

La présente invention concerne un carter de soupape (48) d'un système de refoulement d'un véhicule à moteur. Selon l'invention, un élément de réglage (68) peut se déplacer entre une première position de soupape et une deuxième position de soupape. Le carter en plastique (74, 72) de la soupape (48) est hermétiquement étanche aux liquides et peut supporter des sollicitations mécaniques élevées grâce à un assemblage par liaison de matière.
PCT/EP2011/066438 2010-11-18 2011-09-21 Soupape à carter en matière plastique WO2012065777A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010044090.6 2010-11-18
DE102010044090A DE102010044090A1 (de) 2010-11-18 2010-11-18 Ventil mit einem Gehäuse aus Kunststoff

Publications (1)

Publication Number Publication Date
WO2012065777A1 true WO2012065777A1 (fr) 2012-05-24

Family

ID=44654130

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/066438 WO2012065777A1 (fr) 2010-11-18 2011-09-21 Soupape à carter en matière plastique

Country Status (2)

Country Link
DE (1) DE102010044090A1 (fr)
WO (1) WO2012065777A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012208463A1 (de) 2012-05-21 2013-11-21 Robert Bosch Gmbh Dosiersystem für Harnstoffwasserlösung
DE102012209140A1 (de) * 2012-05-31 2013-12-05 Robert Bosch Gmbh Ventil sowie Verfahren zur Herstellung eines Ventils
DE102019130675A1 (de) * 2019-11-13 2021-05-20 Svm Schultz Verwaltungs-Gmbh & Co. Kg Baugruppe, Ventil und Verfahren zum Montieren der Baugruppe
DE102020112809A1 (de) 2020-05-12 2021-11-18 Lisa Dräxlmaier GmbH Kühlanordnung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2530362B1 (de) * 1975-07-08 1976-09-02 Samson Ag Fluidischer Umschalter fuer Mess-,Regel- oder Steuergeraete mit einem aus zwei Gehaeusehaelften bestehenden Schaltergehaeuse
DE3528072A1 (de) * 1985-08-05 1987-02-05 Fresenius Ag Absperrorgan, insbesondere mediengetrenntes ventil
WO2005108840A1 (fr) 2004-04-30 2005-11-17 Biechele Guenter Soupape a clapet
WO2007081702A2 (fr) * 2006-01-06 2007-07-19 Entegris, Inc. Vanne a diaphragme soude
DE202007018318U1 (de) 2006-01-23 2008-04-10 Prettl, Rolf Betätigungsanordnung zum Betätigen einer Ventilanordnung sowie Elektromagnetaktuator
DE102008039420A1 (de) * 2008-08-13 2010-02-18 Prettl, Rolf Fluidwegeventil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2530362B1 (de) * 1975-07-08 1976-09-02 Samson Ag Fluidischer Umschalter fuer Mess-,Regel- oder Steuergeraete mit einem aus zwei Gehaeusehaelften bestehenden Schaltergehaeuse
DE3528072A1 (de) * 1985-08-05 1987-02-05 Fresenius Ag Absperrorgan, insbesondere mediengetrenntes ventil
WO2005108840A1 (fr) 2004-04-30 2005-11-17 Biechele Guenter Soupape a clapet
WO2007081702A2 (fr) * 2006-01-06 2007-07-19 Entegris, Inc. Vanne a diaphragme soude
DE202007018318U1 (de) 2006-01-23 2008-04-10 Prettl, Rolf Betätigungsanordnung zum Betätigen einer Ventilanordnung sowie Elektromagnetaktuator
DE102008039420A1 (de) * 2008-08-13 2010-02-18 Prettl, Rolf Fluidwegeventil

Also Published As

Publication number Publication date
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