EP3129688A1 - Vanne à conduit tubulaire renforcé - Google Patents
Vanne à conduit tubulaire renforcéInfo
- Publication number
- EP3129688A1 EP3129688A1 EP15718547.1A EP15718547A EP3129688A1 EP 3129688 A1 EP3129688 A1 EP 3129688A1 EP 15718547 A EP15718547 A EP 15718547A EP 3129688 A1 EP3129688 A1 EP 3129688A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve seat
- valve body
- reinforcing
- duct
- 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.)
- Withdrawn
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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift 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
- 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
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
- F16K1/425—Attachment of the seat to the housing by plastical deformation, e.g. valve seat or housing being plastically deformed during mounting
Definitions
- the invention relates to a valve, in particular a valve intended to be implemented in the automotive field.
- the invention more particularly relates to an exhaust gas recirculation valve, or EGR valve, of the English "Exhaust Gas Recirculation”.
- the invention also relates to a method of manufacturing such a valve.
- valves comprising a valve body forming a conduit for the passage of a fluid, a valve seat received in the conduit and a valve adapted to selectively bear against the seat of the valve. valve to close the duct.
- valve seat must be fixed in the passage duct, which can be achieved by forcing the valve seat into the duct and then crimping the valve seat by local deformation of the material forming the wall of the passage duct.
- the wall of the passage duct may, at least on certain angular sectors, be relatively thin, in particular on the angular sectors of the duct wall oriented towards the outside of the body of the duct. valve.
- the wall on these angular sectors may be tubular.
- the other angular sectors, oriented towards the inside of the valve body may correspond to a more massic part of the valve body.
- undesired local deformation of the wall of the passage duct has been observed at the moment of force insertion of the valve seat into the duct and / or during the deformation necessary for crimping the valve seat in the duct. leads. This undesired deformation may be such that the valve seat itself deforms. This deformation of the valve seat may, for example, prevent the valve seat from being fully seated on the valve seat when closing the valve, with a remaining passage passing through the passageway between the valve seat and the valve. .
- valve body is made by die casting. Indeed, in this case, the material forming the valve body is of more fragile structure. In addition, in this case, this unwanted deformation can create escape paths.
- the invention aims to provide an EGR valve, and more generally, a valve, especially for a motor vehicle, does not have the aforementioned drawbacks.
- the invention aims to provide a valve in which the valve seat is fixed effectively.
- the invention proposes a valve, in particular a valve for a motor vehicle, in particular an exhaust gas recirculation valve, comprising:
- valve body forming a fluid passage and an annular receiving surface of a valve seat, a valve seat received on the annular surface, and
- valve adapted to selectively bear against the valve seat to close the passage duct
- valve body around the conduit being tubular, with at least one reinforcing relief substantially at the valve seat.
- the valve may have one or more of the following features, taken alone or in combination:
- the reinforcing relief or reliefs comprise a rib
- the reinforcing relief or reliefs have a height, measured radially from the tubular portion of the valve body, greater than 2 mm, preferably greater than 2.5 mm, and / or less than 5 mm, preferably less than 3 mm; mm and / or a thickness, measured in the direction of the axis of the tubular portion, greater than 2 mm, preferably greater than 2.5 mm, and / or less than 5 mm, preferably less than 3 mm;
- the reinforcing reliefs have a substantially trapezoidal section, the large base of the trapezium being oriented towards the tubular portion of the valve body;
- the reinforcing relief or reliefs extend over an angular portion around the duct of at least 90 °, preferably at least 180 °;
- valve body is made by injection under pressure
- valve is made of stainless steel and / or the valve body made of aluminum alloy;
- valve seat is crimped on the annular surface by local deformation of the valve body.
- the invention relates to a method of manufacturing a valve as described above in all its combinations comprising the steps of:
- valve body in particular by molding, preferably by die casting
- FIG. 1 shows schematically in perspective a detail of a valve EG; and - Figure 2 shows schematically in section the detail of Figure 1, respectively before crimping the valve seat to the left, and after crimping the valve seat to the right.
- a valve 10 for a motor vehicle here an exhaust gas recirculation valve, comprises a valve body 12 forming a passage duct 14, for the recirculation of exhaust gas, and a annular surface 16, in the passage duct 14.
- the valve body may for example be aluminum alloy.
- the valve body 10 may also form a conduit for a cooling water flow of the valve 10.
- the valve body 12 may also include valve mounting holes to a power unit of a motor vehicle.
- Such fixing holes may in particular be made in flanges surrounding the outlets of the cooling water circulation duct, thus making it possible to integrate the cooling water circulation duct of the valve into the water circulation duct of the water. engine cooling on which the valve is attached.
- Such fixing holes can also be made in flanges surrounding the outlets of the passage duct 14.
- the side wall 17 of the passage duct 14 has a reduced thickness on certain angular sectors of the passage duct 14, in particular those facing the outside of the valve body 12, of a thickness for example of the order of 2 to 5 mm, while this wall is thicker on other angular sectors of the passage duct 14, in particular those oriented the center of the valve body 12, a thickness for example of the order at least one centimeter.
- this wall 17, formed by the valve body 12 is tubular, that is to say that it has the shape of a angular portion of a tube, or even a cylinder.
- a valve seat 18 is received on the annular surface 16, in the passage duct 14.
- the valve seat 18 can be received tightly in the passage duct 14, that is to say that its outer diameter is substantially equal to the inside diameter of the passage duct 14.
- the valve 10 also comprises a valve 20 adapted to selectively bear against the valve seat 18 to close the passage duct 14.
- the valve 20 is secured to a valve stem 22 which can be driven in translation. by any known means.
- the valve stem 22 can thus be a cylinder rod, for example.
- the valve stem 22 is translationally driven by the rotation of a rotary actuator actuated by an electric motor, for example, through a cam path cam processing member.
- Such an example valve is for example described in the application F -A-2 947 027 in the name of the Applicant.
- valve 20 The movement of the valve 20 relative to the valve seat is shown schematically by the double arrow Fl in Figure 3.
- the valve is for example stainless steel.
- the wall 17 of the passage duct 14 here has a reinforcing relief 24 at the sector level. angular reduced thickness described above.
- this reinforcing relief takes the form of a reinforcing rib 24, which is in this case is continuous.
- This rib 24 is made substantially at the valve seat 18, in the valve body 12. More precisely, here, the position of the reinforcing rib 24 coincides, axially, with the position of the valve seat 18.
- the axial position means the position along the axis A of the passageway 14.
- Such reinforcing relief 24 serves to deform the inside of the valve body 12, at the valve seat 18, to crimp it against the annular surface 16, without deforming the annular surface.
- Such a reinforcing relief 24 also makes it possible not to deform the wall 17 of the passage duct 14 during the insertion of the valve seat 18 until it abuts against the annular surface 16. The seat of valve 18 can thus be held in position effectively.
- the reinforcement rib 24 here has a substantially trapezoidal cross section, the large base of the trapezium being oriented towards the wall 17 of the passage duct 14. Such a section makes it possible in particular to ensure that a quantity of satisfactory material forms the reinforcing rib 24, when the valve body 12 is made by die casting.
- the reinforcing rib 24 has a height h, measured radially from the wall of the valve body, greater than 2 mm, preferably greater than 2.5 mm, and / or less than 5 mm, preferably less than 3 mm.
- the reinforcing rib 24 has a thickness e, measured in the direction of the axis A of the passage duct 14 or the tubular wall of the passage duct, greater than 2 mm, preferably greater than 2.5 mm. , and / or less than 5 mm, preferably less than 3 mm.
- the rib 24 preferably extends over an angular sector around the passage duct 14 of at least 90 °, preferably at least 180 °. This allows a good compromise between the amount of material needed to form the valve body 12 and the mechanical strength thereof.
- Such a valve may for example be manufactured by implementing the method described below.
- a valve body 12 is made as described above.
- This valve body can be made by molding.
- this valve body 12 is made by pressure molding, such a method allowing a saving in manufacturing time compared to a gravity molding process.
- valve seat 18 is inserted in the passage duct 14, for example in force, in order to prevent any play of the valve seat 18 perpendicular to the axis A of the duct 14.
- the insertion is carried out so that the seat valve 18 is further supported against the annular surface 16 of the passage duct 14.
- the valve body 12 then forms, in the passage duct 14, a projection 26 with respect to the valve seat 18, along the axis A of the passageway 14.
- the process is then continued by crimping the valve seat 18 against the annular surface 16, in particular to block any movement along the axis A of the passage duct 14, of the valve seat 18.
- This crimping is here achieved by folding the projection 26 on the valve seat 16 (reference 26 'on the right of Figure 2).
- the geometry of the reinforcing relief is not reduced to a rib and other shapes can be envisaged, continuous or discontinuous.
- the number of reinforcing reliefs is not limiting either, nor the angular sector on which it (s) extends (ent).
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1453083A FR3019614B1 (fr) | 2014-04-08 | 2014-04-08 | Vanne a conduit tubulaire renforce |
| PCT/FR2015/050896 WO2015155462A1 (fr) | 2014-04-08 | 2015-04-07 | Vanne à conduit tubulaire renforcé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3129688A1 true EP3129688A1 (fr) | 2017-02-15 |
Family
ID=50780815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15718547.1A Withdrawn EP3129688A1 (fr) | 2014-04-08 | 2015-04-07 | Vanne à conduit tubulaire renforcé |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3129688A1 (fr) |
| FR (1) | FR3019614B1 (fr) |
| WO (1) | WO2015155462A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3044067B1 (fr) * | 2015-11-20 | 2018-04-27 | Valeo Systemes De Controle Moteur | Vanne de circulation d'un fluide comprenant un corps de vanne |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB509520A (en) * | 1938-04-22 | 1939-07-18 | Klein Schanzlin & Becker Ag | Improvements in valve casings |
| DE1152857B (de) * | 1961-01-11 | 1963-08-14 | Ruhrstahl Ag | Ventil mit einer staehlern harten und mit einer elastisch nachgiebigen Dichtung |
| JPS585167Y2 (ja) * | 1978-06-26 | 1983-01-28 | 前沢化成工業株式会社 | 弁箱装置 |
| FR2947027B1 (fr) | 2009-06-17 | 2011-07-15 | Valeo Sys Controle Moteur Sas | Dispositif de transformation de mouvement et vanne comportant un tel dispositif |
-
2014
- 2014-04-08 FR FR1453083A patent/FR3019614B1/fr active Active
-
2015
- 2015-04-07 EP EP15718547.1A patent/EP3129688A1/fr not_active Withdrawn
- 2015-04-07 WO PCT/FR2015/050896 patent/WO2015155462A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2015155462A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3019614B1 (fr) | 2019-07-26 |
| FR3019614A1 (fr) | 2015-10-09 |
| WO2015155462A1 (fr) | 2015-10-15 |
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Legal Events
| Date | Code | Title | Description |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| 17P | Request for examination filed |
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| AX | Request for extension of the european patent |
Extension state: BA ME |
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| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20180205 |
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| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| INTG | Intention to grant announced |
Effective date: 20190613 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20191024 |