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WO2012080089A1 - Valve having a flap which regulates a gas flow - Google Patents

Valve having a flap which regulates a gas flow Download PDF

Info

Publication number
WO2012080089A1
WO2012080089A1 PCT/EP2011/072239 EP2011072239W WO2012080089A1 WO 2012080089 A1 WO2012080089 A1 WO 2012080089A1 EP 2011072239 W EP2011072239 W EP 2011072239W WO 2012080089 A1 WO2012080089 A1 WO 2012080089A1
Authority
WO
WIPO (PCT)
Prior art keywords
flap
shaft
valve
axis
housing
Prior art date
Application number
PCT/EP2011/072239
Other languages
German (de)
French (fr)
Inventor
Rosario Bonanno
Original Assignee
Continental Automotive 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 Continental Automotive Gmbh filed Critical Continental Automotive Gmbh
Publication of WO2012080089A1 publication Critical patent/WO2012080089A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1005—Details of the flap
    • F02D9/1025—Details of the flap the rotation axis of the flap being off-set from the flap center axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
    • F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
    • F02D9/1035—Details of the valve housing
    • F02D9/106—Sealing of the valve shaft in the housing, e.g. details of the bearings
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222—Shaping of the valve member

Definitions

  • the invention relates to a valve with a valve controlling a gas stream, comprising a housing with a channel for the gas flow, a flap arranged in the channel and rotatable in the housing perpendicularly to the longitudinal axis of the channel is mounted, wherein the axis of rotation of this storage, the flap penetrates the center in such a way that the flap in a
  • Angle to the axis of rotation is arranged and that the flap between ⁇ two end positions is rotatable.
  • Such valves with flaps have long been known in the art and are used as exhaust gas recirculation valves or as throttle body.
  • the shaft penetrates the middle of the flap so that flap and shaft form an acute angle. If the open flap by the gas stream flows around ⁇ form at the back of the flap, i.e. in the flow direction downstream turbulence. In addition to these disturbances in the flow, the turbulence causes a pressure drop. Particularly in the case of exhaust gas recirculation valves, the pressure drop is disadvantageous since the exhaust gas is then to be brought to a higher pressure and the pressure difference is increased by the pressure drop.
  • the flap has an elaborate design with its shaft penetrating at an angle.
  • the invention has for its object to provide a valve which generates as little turbulence when flowing through a gas stream.
  • the valve should also have a simple structure.
  • the object is achieved in that in each case a shaft portion is arranged in the edge regions of the flap, in which the axis of rotation is located, that the two Wellenab ⁇ sections are integrally formed with the flap, and that each shaft portion is connected to a shaft piece mounted in the housing.
  • a valve is provided in which essentially only the flap without the shaft is arranged in the flow channel.
  • the shaft sections serve to connect the flap with the shaft pieces forming the shaft.
  • connection of the shaft sections with the respective shaft piece can be both materially bonded, preferably by means of
  • connection point is located in the flow channel of the valve housing.
  • the flap can be both a plastic and a metal or a metal alloy.
  • the design of the flap made of plastic has the advantage that the flap has a low weight, which has a positive effect on the dimensioning of the electric drive for adjusting the flap.
  • the shaft portions are formed such that they do not protrude beyond the edge of the flap in the radial extent. With this embodiment, the connection point between shaft portion and shaft piece is in the region of the flap and not in the region of the bearing, which has an advantageous effect in terms of the life of the bearing.
  • Fig. 1 is a sectional view of a valve after the
  • FIG. 2 shows a flap of a valve according to the invention
  • Fig. 3 shows a further imple mentation of the flap.
  • valve In Fig. 1, the valve is shown in longitudinal section. It consists of a housing 1 with a valve seat 2 for a
  • Flap 3 which is rotatably mounted on a shaft 4.
  • the Ven ⁇ tilsitz 2 and the flap 3 are arranged in a channel 5 of the housing. 1 In the channel 5, a gas flow is performed.
  • the shaft 4 is STORED on both sides of the flap 3 in the housing 1, the shaft 4 is connected on one side with a non ⁇ represent provided electric motor for driving the shaft. 4
  • the shaft is attached at an angle to the flap 3. assigns.
  • the valve shown is a gas recirculation valve in egg ⁇ nem motor vehicle.
  • FIG. 2 shows the flap 3 of a valve according to the invention.
  • the flap 3 has two edge regions 7 in which the rotation ⁇ axis 6 extends.
  • a shaft section 8 is arranged in each of these two edge regions 7.
  • the shaft sections 8 are formed integrally with the flap 3.
  • the ends of the shaft ⁇ sections 8 are welded to a respective shaft piece 9, so that shaft sections 8 and shaft pieces 9 form the entire shaft 4.
  • the shaft pieces 9 form the regions of the shaft 4, in which the shaft 4 is mounted in the housing.
  • the flap 3 in Figure 3 differs from the flap of Figure 2 in that the shaft sections 8, based on the shaft 4, are formed with a smaller extension than the diameter of the flap 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lift Valve (AREA)

Abstract

The invention relates to a valve having a flap 3 which regulates a gas flow, composed of a housing 1 with a duct 5 for the gas flow, a flap 3 which is arranged in the duct 5 and which is mounted so as to be rotatable perpendicular to the longitudinal axis of the duct 5 in the housing 1, wherein the axis of rotation 6 of said mounting extends centrally through the flap 3 such that the flap 3 is arranged at an angle with respect to the axis of rotation 6 and such that the flap 3 can be rotated between two end positions. In each case one shaft portion 8 is arranged in those edge regions 7 of the flap 3 in which the axis of rotation 6 lies. The two shaft portions 8 are formed in one piece with the flap 3, and each shaft portion 8 is connected to a shaft piece 9 mounted in the housing 1.

Description

Beschreibung description
Ventil mit einer einen Gasstrom regelnden Klappe Gegenstand der Erfindung ist ein Ventil mit einer einen Gas¬ strom regelnden Klappe, bestehend aus einem Gehäuse mit einem Kanal für den Gasstrom, einer in dem Kanal angeordneten Klappe, die senkrecht zur Längsachse des Kanals in dem Gehäuse drehbar gelagert ist, wobei die Drehachse dieser Lagerung die Klappe derart mittig durchdringt, dass die Klappe in einemThe invention relates to a valve with a valve controlling a gas stream, comprising a housing with a channel for the gas flow, a flap arranged in the channel and rotatable in the housing perpendicularly to the longitudinal axis of the channel is mounted, wherein the axis of rotation of this storage, the flap penetrates the center in such a way that the flap in a
Winkel zur Drehachse angeordnet ist und dass die Klappe zwi¬ schen zwei Endstellungen drehbar ist. Angle to the axis of rotation is arranged and that the flap between ¬ two end positions is rotatable.
Derartige Ventile mit Klappen sind seit langem bekannter Stand der Technik und werden als Abgasrückführventile oder als Drosselklappenstutzen eingesetzt. Die Welle durchdringt mittig die Klappe, so dass Klappe und Welle einen spitzen Winkel bilden. Wird die geöffnete Klappe vom Gasstrom um¬ strömt bilden sich an der Rückseite der Klappe, das heißt in Strömungsrichtung stromabwärts, Verwirbelungen . Neben diesen Störungen in der Strömung, bewirken die Verwirbelungen einen Druckabfall. Insbesondere bei Abgasrückführventilen ist der Druckabfall von Nachteil, da das Abgas anschließend auf einen höheren Druck gebracht werden soll und sich die Druckdiffe- renz durch den Druckabfall erhöht. Zudem besitzt die Klappe mit ihrer sie in einem Winkel durchdringenden Welle eine aufwendige Gestaltung. Such valves with flaps have long been known in the art and are used as exhaust gas recirculation valves or as throttle body. The shaft penetrates the middle of the flap so that flap and shaft form an acute angle. If the open flap by the gas stream flows around ¬ form at the back of the flap, i.e. in the flow direction downstream turbulence. In addition to these disturbances in the flow, the turbulence causes a pressure drop. Particularly in the case of exhaust gas recirculation valves, the pressure drop is disadvantageous since the exhaust gas is then to be brought to a higher pressure and the pressure difference is increased by the pressure drop. In addition, the flap has an elaborate design with its shaft penetrating at an angle.
Der Erfindung liegt die Aufgabe zugrunde, ein Ventil zu schaffen, welches möglichst wenig Verwirbelungen beim Umströmen durch einen Gasstrom erzeugt. Das Ventil soll darüber hinaus einen einfachen Aufbau besitzen. The invention has for its object to provide a valve which generates as little turbulence when flowing through a gas stream. The valve should also have a simple structure.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass in den Randbereichen der Klappe, in denen die Drehachse liegt, je ein Wellenabschnitt angeordnet ist, dass die beiden Wellenab¬ schnitte einteilig mit der Klappe ausgebildet sind, und dass jeder Wellenabschnitt mit einem im Gehäuse gelagerten Wellenstück verbunden ist. According to the invention the object is achieved in that in each case a shaft portion is arranged in the edge regions of the flap, in which the axis of rotation is located, that the two Wellenab ¬ sections are integrally formed with the flap, and that each shaft portion is connected to a shaft piece mounted in the housing.
Mit der Anordnung der Wellenabschnitte in der Drehachse, wo- bei sich die Wellenabschnitte in den Randbereichen der Klappe einander gegenüberliegen, wird ein Ventil geschaffen, bei dem im Strömungskanal im Wesentlichen nur noch die Klappe ohne die Welle angeordnet ist. Die Wellenabschnitte dienen dabei zur Verbindung der Klappe mit den die Welle bildenden Wellen- stücken. Bei diesem Ventil sind die Strömungsbeeinflussenden Konturen auf ein Minimum reduziert. Dadurch wird ein wesentlich homogenerer Strömungsverlauf des Gasstroms erreicht und Druckverluste infolge von Verwirbelungen nahezu eliminiert. Indem die Wellenabschnitte mit den Wellenstücken zur voll- ständigen Welle verbunden werden, lässt sich die Klappe aufgrund der in Bezug auf die Welle kleineren Abmessung einfa¬ cher herstellen. With the arrangement of the shaft sections in the axis of rotation, wherein the shaft sections in the edge regions of the flap face each other, a valve is provided in which essentially only the flap without the shaft is arranged in the flow channel. The shaft sections serve to connect the flap with the shaft pieces forming the shaft. With this valve, the flow-influencing contours are reduced to a minimum. As a result, a substantially more homogeneous flow profile of the gas stream is achieved and pressure losses due to turbulence are virtually eliminated. By the shaft portions are connected to the shaft pieces for complete shaft, the flap can be due to the smaller in relation to the shaft dimensions produce simp ¬ cher.
Die Verbindung der Wellenabschnitte mit dem jeweiligen Wel- lenstück kann sowohl stoffschlüssig, vorzugsweise mittelsThe connection of the shaft sections with the respective shaft piece can be both materially bonded, preferably by means of
Schweißen oder Kleben, als auch kraftschlüssig, vorzugsweise durch Verpressen, erfolgen. Welding or gluing, as well as non-positively, preferably by pressing done.
Um die Verbindung der Wellenabschnitte mit den Wellenstücken prozesstechnisch einfach herstellen zu können, hat es sich als vorteilhaft herausgestellt die Wellenabschnitte, bezogen auf die Drehachse, mit einer geringeren Ausdehnung als der Durchmesser der Klappe auszubilden. Durch diese Gestaltung liegt die Verbindungsstelle im Strömungskanal des Ventilge- häuses. In order to produce the connection of the shaft sections with the shaft pieces process technology simple, it has proven to be advantageous to form the shaft sections, based on the axis of rotation, with a smaller extension than the diameter of the flap. With this design, the connection point is located in the flow channel of the valve housing.
Die Klappe kann sowohl ein Kunststoff als auch ein Metall oder eine Metalllegierung sein. Die Ausbildung der Klappe aus Kunststoff hat den Vorteil, dass die Klappe ein geringes Ge- wicht aufweist, was sich positiv auf die Dimensionierung des elektrischen Antriebs zum Verstellen der Klappe auswirkt. In einer vorteilhaften Ausgestaltung sind die Wellenabschnitte derart ausgebildet, dass sie in radialer Erstreckung nicht über den Rand der Klappe hinausragen. Mit dieser Ausgestaltung liegt die Verbindungsstelle zwischen Wellenabschnitt und Wellenstück im Bereich der Klappe und nicht im Bereich der Lagerung, was sich vorteilhaft hinsichtlich der Lebensdauer der Lagerung auswirkt. The flap can be both a plastic and a metal or a metal alloy. The design of the flap made of plastic has the advantage that the flap has a low weight, which has a positive effect on the dimensioning of the electric drive for adjusting the flap. In an advantageous embodiment, the shaft portions are formed such that they do not protrude beyond the edge of the flap in the radial extent. With this embodiment, the connection point between shaft portion and shaft piece is in the region of the flap and not in the region of the bearing, which has an advantageous effect in terms of the life of the bearing.
Eine leichteres Herstellen der Verbindung zwischen Wellenab- schnitt und Wellenstück, insbesondere von stoffschlüssigenMaking the connection between shaft section and shaft section easier, in particular of cohesive connection
Verbindungen wie Schweißen, wie erreicht, wenn die Wellenab¬ schnitte in ihrer axialen Erstreckung über den Rand der Klappe hinausragen, so dass die Verbindungsstelle bei einer Dre¬ hung der Welle über den gesamten Umfang zugänglich ist. Die- ser Überstand der Wellenabschnitte ist vorteilhaft so bemes¬ sen, dass die Verbindungsstelle zwar im Gehäuse aber noch nicht in der eigentlichen Lagerstelle angeordnet ist. Connections such as welding, as achieved when the Wellenab ¬ sections protrude in its axial extent beyond the edge of the flap, so that the junction is accessible at a Dre ¬ hung the shaft over the entire circumference. DIE ser supernatant of the shaft sections is advantageously bemes ¬ sen that the junction is, however, not yet arranged in the housing in the actual storage location.
An mehreren Ausführungsbeispielen wird die Erfindung näher erläutert. Es zeigen in: In several embodiments, the invention will be explained in more detail. Show in:
Fig. 1 eine Schnittdarstellung eines Ventils nach dem Fig. 1 is a sectional view of a valve after the
Stand der Technik, Fig. 2 eine Klappe eines erfindungsgemäßen Ventils und  Prior art, Fig. 2 shows a flap of a valve according to the invention and
Fig. 3 eine weitere Aus führungs form der Klappe. Fig. 3 shows a further imple mentation of the flap.
In Fig. 1 ist das Ventil im Längsschnitt dargestellt. Es be- steht aus einem Gehäuse 1 mit einem Ventilsitz 2 für eineIn Fig. 1, the valve is shown in longitudinal section. It consists of a housing 1 with a valve seat 2 for a
Klappe 3, die an einer Welle 4 drehbar gelagert ist. Der Ven¬ tilsitz 2 und die Klappe 3 sind in einem Kanal 5 des Gehäuses 1 angeordnet. In dem Kanal 5 ist ein Gasstrom geführt. Die Welle 4 ist zu beiden Seiten der Klappe 3 im Gehäuse 1 gela- gert, wobei die Welle 4 auf einer Seite mit einem nicht dar¬ gestellten Elektromotor zum Antrieb der Welle 4 verbunden ist. Die Welle ist dazu in einem Winkel zur Klappe 3 ange- ordnet. Das gezeigte Ventil ist ein Gasrückführventil in ei¬ nem Kraftfahrzeug. Flap 3, which is rotatably mounted on a shaft 4. The Ven ¬ tilsitz 2 and the flap 3 are arranged in a channel 5 of the housing. 1 In the channel 5, a gas flow is performed. The shaft 4 is STORED on both sides of the flap 3 in the housing 1, the shaft 4 is connected on one side with a non ¬ represent provided electric motor for driving the shaft. 4 The shaft is attached at an angle to the flap 3. assigns. The valve shown is a gas recirculation valve in egg ¬ nem motor vehicle.
Figur 2 zeigt die Klappe 3 eines erfindungsgemäßen Ventils. Die Klappe 3 besitzt zwei Randbereiche 7, in denen die Dreh¬ achse 6 verläuft. In diesen beiden Randbereichen 7 ist je ein Wellenabschnitt 8 angeordnet. Die Wellenabschnitte 8 sind einteilig mit der Klappe 3 ausgebildet. Die Enden der Wellen¬ abschnitte 8 sind mit je einem Wellenstück 9 verschweißt, so dass Wellenabschnitte 8 und Wellenstücke 9 die gesamte Welle 4 bilden. Die Wellenstücke 9 bilden die Bereiche der Welle 4, in denen die Welle 4 im Gehäuse gelagert ist. FIG. 2 shows the flap 3 of a valve according to the invention. The flap 3 has two edge regions 7 in which the rotation ¬ axis 6 extends. In each of these two edge regions 7, a shaft section 8 is arranged. The shaft sections 8 are formed integrally with the flap 3. The ends of the shaft ¬ sections 8 are welded to a respective shaft piece 9, so that shaft sections 8 and shaft pieces 9 form the entire shaft 4. The shaft pieces 9 form the regions of the shaft 4, in which the shaft 4 is mounted in the housing.
Die Klappe 3 in Figur 3 unterscheidet sich von der Klappe nach Figur 2 dadurch, dass die Wellenabschnitte 8, bezogen auf Welle 4, mit einer geringeren Ausdehnung als der Durchmesser der Klappe 3 ausgebildet sind. The flap 3 in Figure 3 differs from the flap of Figure 2 in that the shaft sections 8, based on the shaft 4, are formed with a smaller extension than the diameter of the flap 3.

Claims

Ventil mit einer einen Gasstrom regelnden Klappe, beste hend aus einem Gehäuse mit einem Kanal für den Gasstrom einer in dem Kanal angeordneten Klappe, die senkrecht zur Längsachse des Kanals in dem Gehäuse drehbar gela¬ gert ist, wobei die Drehachse dieser Lagerung die Klapp derart mittig durchdringt, dass die Klappe in einem Win kel zur Drehachse angeordnet ist und dass die Klappe zwischen zwei Endstellungen drehbar ist, d a d u r c h g e k e n n z e i c h n e t , dass in den Randbereichen (7) der Klappe (3), in denen die Drehachse (6) liegt, j ein Wellenabschnitt (8) angeordnet ist, dass die beiden Wellenabschnitte (8) einteilig mit der Klappe (3) ausge bildet sind, und dass jeder Wellenabschnitt (8) mit ei¬ nem im Gehäuse (1) gelagerten Wellenstück (9) verbunden ist . Valve with a gas flow regulating flap, best starting from a housing with a channel for the gas flow of a valve disposed in the channel flap, which is rotatably gela ¬ gert perpendicular to the longitudinal axis of the channel in the housing, wherein the axis of rotation of this storage, the folding in the middle permeates that the flap is arranged at an angle to the axis of rotation and that the flap is rotatable between two end positions, characterized in that in the edge regions (7) of the flap (3) in which the axis of rotation (6), j a shaft portion (8) is arranged, that the two shaft portions (8) integrally with the flap (3) are out, and that each shaft portion (8) with ei ¬ nem in the housing (1) mounted shaft piece (9) is connected.
Ventil nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass jeder Wellenabschnitt (8) mit ei¬ nem in der Lagerung angeordneten Wellenstück (9) stoffschlüssig, vorzugsweise durch Schweißen oder Kleben ver bunden ist. Valve according to claim 1, characterized in that each shaft portion (8) with ei ¬ nem arranged in the bearing shaft piece (9) cohesively, preferably ver by welding or gluing is prevented.
Ventil nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , dass jeder Wellenabschnitt (8) mit ei¬ nem in der Lagerung angeordneten Wellenstück (9) kraftschlüssig, vorzugsweise durch Verpressen, verbunden ist Valve according to claim 1, characterized in that each shaft portion (8) with ei ¬ nem arranged in the bearing shaft piece (9) non-positively, preferably by pressing, is connected
Ventil nach zumindest einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t , dass die Klappe (3) mit den Wellenabsätzen (8) aus Kunststoff, Metall oder einer Metalllegierung besteht. Valve according to at least one of claims 1 to 3, characterized in that the flap (3) with the wave shoulders (8) consists of plastic, metal or a metal alloy.
Ventil nach zumindest einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t , dass die Wel- lenabsätze (8) in radialer Erstreckung nicht über den Rand der Klappe (3) hinausragen. Valve according to at least one of claims 1 to 4, characterized in that the wel lenabsätze (8) in radial extent do not protrude beyond the edge of the flap (3).
PCT/EP2011/072239 2010-12-17 2011-12-08 Valve having a flap which regulates a gas flow WO2012080089A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010054882.0 2010-12-17
DE201010054882 DE102010054882A1 (en) 2010-12-17 2010-12-17 Valve with a gas flow regulating flap

Publications (1)

Publication Number Publication Date
WO2012080089A1 true WO2012080089A1 (en) 2012-06-21

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ID=45315796

Family Applications (1)

Application Number Title Priority Date Filing Date
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WO (1) WO2012080089A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2934312A (en) * 1957-10-29 1960-04-26 Garrett Corp Thrust compensating device for axially inclined butterfly valves
US4067352A (en) * 1975-12-22 1978-01-10 Joseph Charles Halpine Valve having integrity assurance means
US4327765A (en) * 1980-08-15 1982-05-04 Dover Corporation Butterfly valve having leak detecting means
EP0200868A2 (en) * 1985-05-08 1986-12-17 Fritz Müller Butterfly valve
US6446338B1 (en) * 2001-06-25 2002-09-10 Lei-Jui Wu Method of sluice gate valve fabrication
DE102007050899A1 (en) * 2007-10-24 2009-04-30 Continental Automotive Gmbh Valve

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
US3556475A (en) * 1968-05-22 1971-01-19 Borg Warner Shutoff valve
FR2087475A5 (en) * 1970-05-21 1971-12-31 Alsthom
JPH01188772A (en) * 1988-01-21 1989-07-28 Akira Oshima Seal device for both positive/back pressure of butterfly valve
DE10310744A1 (en) * 2003-03-10 2004-11-11 Siemens Ag Part of a throttle valve assembly
DE10327045A1 (en) * 2003-06-16 2005-04-07 Siemens Ag Throttle valve
DE10349024A1 (en) * 2003-10-22 2005-06-16 Siemens Ag throttle body
US7571742B2 (en) * 2005-03-23 2009-08-11 Honeywell International Inc. Butterfly outflow valve
EP1793114B1 (en) * 2005-12-02 2013-05-15 Behr Thermot-tronik GmbH Apparatus, in particular exhaust gas recirculation valve device, for controlling a fluid flow

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2934312A (en) * 1957-10-29 1960-04-26 Garrett Corp Thrust compensating device for axially inclined butterfly valves
US4067352A (en) * 1975-12-22 1978-01-10 Joseph Charles Halpine Valve having integrity assurance means
US4327765A (en) * 1980-08-15 1982-05-04 Dover Corporation Butterfly valve having leak detecting means
EP0200868A2 (en) * 1985-05-08 1986-12-17 Fritz Müller Butterfly valve
US6446338B1 (en) * 2001-06-25 2002-09-10 Lei-Jui Wu Method of sluice gate valve fabrication
DE102007050899A1 (en) * 2007-10-24 2009-04-30 Continental Automotive Gmbh Valve

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