WO2017085044A1 - Metallische flachdichtung - Google Patents
Metallische flachdichtung Download PDFInfo
- Publication number
- WO2017085044A1 WO2017085044A1 PCT/EP2016/077679 EP2016077679W WO2017085044A1 WO 2017085044 A1 WO2017085044 A1 WO 2017085044A1 EP 2016077679 W EP2016077679 W EP 2016077679W WO 2017085044 A1 WO2017085044 A1 WO 2017085044A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plane
- flat gasket
- metallic
- extensions
- metallic flat
- Prior art date
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 46
- 239000002184 metal Substances 0.000 title claims abstract description 46
- 238000007789 sealing Methods 0.000 claims description 18
- 239000004744 fabric Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 239000011324 bead Substances 0.000 claims description 11
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000012530 fluid Substances 0.000 abstract description 27
- 239000002245 particle Substances 0.000 abstract description 9
- 230000007704 transition Effects 0.000 abstract description 5
- 230000008093 supporting effect Effects 0.000 description 8
- 239000007789 gas Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000639 Spring steel Inorganic materials 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/064—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces the packing combining the sealing function with other functions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/35—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for cleaning or treating the recirculated gases, e.g. catalysts, condensate traps, particle filters or heaters
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
- F16J15/0825—Flat gaskets laminated
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
- F16J15/0818—Flat gaskets
- F16J2015/0868—Aspects not related to the edges of the gasket
Definitions
- the present invention relates to a metallic flat gasket with a
- the seal thus serves on the one hand to seal a line transition between two components and
- Screen fabric in which the screen fabric is connected to a layer of a metallic gasket via a clamping ring or by folding over edge regions of the gasket layer and screen element around each other.
- the freely projecting screen fabric does not have enough structural rigidity to avoid stretching due to the high pressures and temperatures of the fluid flowing through. The episode are uncontrollably enlarged
- Filter element consists in the local solution of a "double pot” sieve, a sieve, which bulges against the flow direction and back, which requires a very strong forming. Especially with small to medium screen areas, this transformation is not with reproducible mesh size possible.
- the object of the invention is thus to provide a metallic gasket with at least one gasket layer in which a screen element is integrated, which on the one hand provides a sufficient flow area, on the other hand, but also a reproducible
- the seal should be permanently guaranteed.
- the seal should consist of as few components as possible and be produced with the simplest possible processes.
- the invention thus relates to a metallic gasket with at least one metallic layer, namely a sheet metal layer.
- This at least one layer has at least one passage opening which is covered by a sieve element.
- the metallic layer may be formed as a closed sheet metal layer, in particular as a pore-free or mesh-free sheet metal layer.
- the at least one metallic layer extends in its immediately adjacent to the passage opening region in a first plane.
- the sieve consists of a
- the screen element is not formed flat, but has a curvature portion which bulges to a second level.
- the curvature portion is annularly surrounded by an edge portion which extends at least partially, but preferably completely around the curvature portion circumferentially in a third plane.
- the second level is different from the third level.
- at least two extensions are formed, which extend from the edge of the through hole in the region of the through hole, the at least two extensions bulge each case so that at least two of the extensions in a fourth level into each other or connected to each other. This fourth level is different from the first level.
- the at least two extensions can be designed so that they
- the at least one support section then consists of uninterrupted from the sheet metal layer molded material, although the
- Supporting portion due to its curvature has a greater length than the direct connection of the regions of the at least one metallic layer in which the associated projections bulge out of the edge or the plane of the through hole.
- the metallic flat gasket can be provided with exactly one support section, which spans the passage opening. However, it can also have more than one support section, wherein the support sections then each connect the edges of the passage opening and span the passage opening. In this case, it is preferred in each case for the arching section of the screen element not to float freely over its entire surface, but to rest on the at least one supporting section at least in sections, forming at least one inner contact region.
- the at least one support section thus prevents the screen element from being stretched and the stitch size of the screen element being changed.
- the at least one support section is thus always arranged behind the screen element in the flow direction of the fluid to be filtered.
- the screen element at least partially, but preferably circumferentially rests on the at least one metallic layer and forms an outer contact portion.
- connection section is formed.
- the connection can for example be cohesively, in particular by means of welding.
- the connection can be made both circumferentially, for example in the form of a continuous weld or in sections, for example in the form of individual welds.
- it is laser-welded.
- Form-fitting connections are possible, for example via knobs and / or corrugations in the sheet metal layer or by means of clinching outside of the for Caulking relevant area.
- the metallic flat gasket is preferably provided with at least one molded into the at least one metallic layer sealing element, of which at least one sealing element completely surrounds the passage opening.
- Sealing element is formed in particular as a bead, wherein for reasons of space usually a step-shaped bead, so a half bead is advantageous.
- a half bead is advantageous.
- periodic sealing elements are possible.
- the support sections of metallic flat gaskets according to the invention can be made of thermoformable metals, i. Reshape metals with low tensile strength directly as one-piece sheets.
- thermoformable metals i. Reshape metals with low tensile strength directly as one-piece sheets.
- such materials do not allow the simultaneous durably shaping of embossed sealing elements in the sheet metal layer in question, but require a complex hardening process before an elastic sealing element
- the solution according to the invention therefore preferably relates only to those metallic flat gaskets in which the at least one support section is formed in sheet metal layer which consists of or contains steel or a nickel-based alloy and has a tensile strength which is at least 900 N / mm 2 , preferably at least 1100 N / mm 2 , in particular at least 1350 N / mm 2 .
- the tensile strength relates not only to the finished state of the entire seal, but in particular the state at the time of molding of the elastic sealing element. Even higher tensile strengths are preferred in principle. The yield strength of these materials, which is less than 22%, is also sufficient for the deformation required here.
- the tensile strengths refer to new seals. In operation, the seals are often very strongly heated to burn off carbon black, so that the mentioned tensile strengths in used seals are then given only in the edge regions of the seal, which were not exposed to the high temperatures.
- the protrusions forming the at least one support section have, if appropriate, any existing bending regions, for example at the transition from the area surrounding the passage opening into the extensions or at other points of strong change in direction and / or outside possibly existing connection areas in which, for example, there is a welded connection, advantageously no significant structural changes.
- the grain sizes of the metal sheet thus correspond in the extensions - outside of the two areas mentioned - advantageously those of the metal sheet in the
- At least two extensions continue to form at least one arc continuously and thus form a support section.
- a first variant of this first embodiment is characterized in that the at least one metallic layer has exactly one support portion, which consists of exactly one continuous arc, thus having exactly two extensions. If this arcuate support section projected into the first plane, it has over its entire course a maximum width which corresponds to a maximum of twice, preferably at most one and a half times the plate thickness of the at least one metallic layer.
- the two extensions each have exactly one connection region in which they protrude out of the sheet metal layer at the edge of the passage opening. In their respective connection region, the extensions each have a deflection of 80 ° to 100 ° from the first plane.
- an arcuate element is cut free while maintaining the two connections of the projections to the other sheet metal layer and deformed in the two connection areas so that this arcuate element extends outside the connection areas substantially perpendicular to the sheet metal layer in the area surrounding the passage opening.
- a second variant of this first embodiment of a metallic flat gasket according to the invention in contrast, contains a plurality of support sections, each with a contiguous arc. Again, the two have an arcuate
- Support section forming extensions each have a connection area.
- extensions are not quite as strongly deflected from the first level; the extensions are deflected in their connection area by 45 to 90 ° from the first level.
- the deflection angle in the terminal regions has a small difference of 90 °, since thus results in projection of the arcuate support portions in the first plane a smaller maximum width of the support portion than with low deflection angles, so that a lesser portion of the Siebelements of Support section is covered or closed.
- the surface of the projections forming the support portion extends transversely to the extension direction of the projections substantially parallel to the first plane or at an angle of -25 ° to 25 ° with the first plane.
- the at least one support section when projected into the first plane, has a minimum width over its entire course which is at least five times
- the width of the support section may change in the course of the support section.
- the extensions are formed so that they have a free end. They are advantageously so from the sheet metal layer, more precisely from the
- Through hole forming portion of the sheet metal layer cut free that they have a length corresponding to more than half the diameter of the through hole.
- cut geometries are advantageous in which two sections each forming an extension run side by side in sections, for example parallel to one another or with a parallel main extension direction.
- To form a support section at least two extensions overlap in sections in this embodiment.
- the connection then preferably takes place in the region of this overlap.
- both cohesive connections in particular by (laser) welding, positive connections, in particular by crimping the free ends around each other or by means of a connecting means, in particular by means of a rivet, are used.
- Cohesive connections are particularly advantageous in particular when a cohesive connection between the sieve element and the at least one metallic layer also takes place in the outer contact section.
- the at least one support section has exactly two extensions, a curved support section also results in this second embodiment.
- the second embodiment also allows support portions with more complex shapes, such as multi-beam stars or a ring element, which continues over two or more radiating elements from the edge of the at least one metallic layer.
- the metallic flat gasket more than two extensions, wherein the extensions are preferably connected to each other via branches. Again, the respective extensions are continuously cut free from the material of the through hole in the at least one metallic layer while maintaining a connection.
- the screen element and the at least one support portion sections, especially in the inner contact region are materially interconnected. This is easy to realize in particular in the second embodiment by means of laser welding.
- the second level and the third level of the sieve element have the greatest possible distance.
- the material of the sieve element may only be deformed within narrowly defined limits. Consequently, the distance between the second and third plane advantageously between 15% and 55% of the smallest distance of the side edges of the through hole.
- the at least one support section may close only a limited area portion of the sieve element in order to guarantee a permanently reliable filtration of the passing medium.
- the total area of the support section at most 10%, preferably at most 5% of the projected in this plane surface of the screen element.
- the first variant of the first embodiment is characterized by very small and thus advantageous overlaps.
- the geometry of the body to be sealed against each other in particular of lines, such as exhaust pipes of an internal combustion engine
- Through hole can be chosen differently.
- the corners are of course rounded.
- the sieve element consists at least in sections of a sieve fabric, but preferably over the entire surface of a sieve fabric.
- the fabric consists in particular of a steel wire, preferably a stainless steel wire.
- a sieve element, which only partially consists of a sieve fabric, for example, has a folded outer frame of a solid sheet.
- the sieve element of the metallic flat gasket in the edge portion and outside of the connecting portion has a wire thickness of 0.04 to 0.2 mm, preferably from 0.05 to 0.15 mm.
- the mesh size of the sieve element is decisive.
- linen fabric applies, especially in the region of the steepest rise of Siebelements in the intermediate region between the second and third plane, that the sieve preferably has a mesh size of 0.03 to 0.5 mm, particularly preferably from 0.08 to 0.3 mm. Mesh sizes of 0.15 to 0.22 mm are particularly preferred. It is also possible to combine a plurality of layers of a fabric, in particular a linen fabric, superimposed to form a single sieve element.
- the screen element is at least partially compressed at its outer edge, in particular pressed circumferentially. This can ensure that not separate wires of the screen and in turn solve the flowed through fluid
- the metallic flat gasket can be designed in several layers, in this case, an embodiment and at least one steel sheet with a sheet of a
- Multi-layered, in particular two-layered embodiments are particularly advantageous when the sieve element has a large thickness, in this case it is preferred if corrugations are formed in two sheet metal layers, which in sum have a bead height which is greater than the thickness of the screen element.
- the metallic flat gasket consists only of a sheet metal layer.
- the metallic flat gasket finds particular use as a seal in the range of hot gases, preferably for the exhaust gas recirculation of internal combustion engines.
- the screen element serves, for example, to collect particles released from a catalyst or particle filter so that they can not get into the turbocharger.
- the at least one metallic layer is uncoated.
- the at least one metallic layer may be provided with a metal- or polymer-based coating on one or both sides, over its full area or partially.
- Figure 1 a sectional view of the mounting position of a metallic gasket
- Figure 2 a sectional view of the mounting position of two inventive
- Figure 3 in plan view and in two sectional views a first
- Figure 4 three sectional views of supporting sections forming extensions
- FIG. 5 a plan view of a further metallic according to the invention
- Figure 7 a simplified sectional view of an inventive
- FIG. 8 a top view of a further metallic according to the invention
- FIGS. 9 to 4 each show a plan view of a further metallic 11: flat gasket according to the invention.
- Figure 12 a sectional view of another invention
- FIG. 1 illustrates the installation situation of a conventional metallic flat gasket 101 between two fluid-carrying components 160 and 170.
- a fluid here exhaust gas of an internal combustion engine flows in the direction of the arrow through the
- the passage opening is sealed by a circumferential bead 121 in the one metallic layer 102 of the metallic flat gasket 101.
- the passage opening 111 is straddled by a screen element 104, which serves to catch particles entrained in the fluid flow and to prevent the particles from being carried to downstream components and damaging them.
- a domed screen is used instead of a vertical, flat screen to provide a sufficiently large screen area.
- the sieve element is designed so that the mesh size is so small that all critical particles are collected and that the mesh size is so large that the pressure loss remains limited to a permissible level. This sieve element 104 bulges in the direction of flow. However, the sieve element 104 is in fluid flow and undergoes deformations under continuous load.
- the mesh size is changed non-reproducible, so there is a risk that particles can pass through the filter element unfiltered.
- inventive metallic flat gasket 1 in Figure 2-a and 2-b which seals the transition of a fluid channel 50 between two components 60, 70, as can be seen in Figure 3, at least two extensions 20 which extend from the edge of the sheet metal layer 2 into the through hole 11 and protrude from the plane El of the sheet metal layer 2, from which they continue, and together
- Form support area 23 In the two subfigures of Figure 2, only one extension 20 is cut. It forms, together with at least one further extension, with which it is either connected or in which it merges with the same material, a support section 23 which prevents deformation of the arched sieve element 4.
- the sheet metal layer 2 is formed of a non-deep drawing spring steel with a tensile strength of about 1100 N / mm 2 , so that the extensions 20 must have a total length, which allows to follow the curved shape of the sieve 4. The total length must be clear be greater than the shortest distance of the passage opening limiting edges.
- a sealing element 21 is formed in all the illustrated embodiments, which is designed in particular as a half bead.
- Figures 2-a and 2-b further illustrate that the curvature of the sieve 4 can be directed both in the flow direction of the fluid (Figure 2-a) and against the flow direction of the fluid ( Figure 2- b). It is essential in both cases that the support area 23 in
- Flow direction of the fluid behind the screen element 4 is arranged.
- FIG. 3 A first embodiment of a metallic flat gasket 1 according to the invention is shown in a top view in FIG. 3 (FIG. 3 a) as well as two sectional views corresponding to the sections BB (FIGS. 3 b) and CC (FIGS. 3 c) from FIG 3-a illustrated.
- the semi-finished sheet metal layer 2a with a preliminary stage of the extensions 20 will be explained with reference to FIG. 3d.
- Figure 3-d are already the outer edges of the sheet metal layer 2a and the through holes 12 for
- Supporting region 23 is hidden, namely a region whose width substantially corresponds to the thickness of the metallic layer 2, here 0.20 mm.
- connection areas 24 The extensions 20 experience only in the connection areas 24 a deflection. On a connection between the support portion 23 and the screen element 4 has been omitted here. Thus, the support region 23 only in the connection regions 24
- the sieve element 4 consists of a woven fabric of stainless steel wire with a wire thickness of 0.1 mm and a mesh width of 0.18 mm.
- Figure 4 illustrates in three fields different cross-sections of extensions 20 inventive metallic flat gaskets comparable to the first embodiment shown in Figure 3.
- the variant of Figure 4-a corresponds to the rectangular cross-section shown in Figure 3-b.
- This is advantageous in sufficiently thick sheet thicknesses, since it is particularly easy to manufacture.
- damage to the screening element 4 can occur at the inner contact surface 26. Therefore, with thin sheet thicknesses, the variants of FIGS. 4-b and 4-c are preferred since the free edges of the extensions 20 facing the screen element 4 are bent with a clear radius, so that only the rounded area on the inner contact surface 26 on the Sieve 4 comes to rest. If the extension 20 in question is inclined, as in FIGS.
- the bent end section 220 can be located below the non-bent section of the extension (FIG. 4-b) or next to the bent section of the extension (FIGS. 4-c ) come to rest. Curved variants are also possible with non-inclined extensions 20.
- FIG. 5 shows a variant of the first embodiment of FIG. 3.
- a total of four extensions 20 are present, which each form a support region 23 in pairs.
- the support region 23 in FIG. 3 runs exactly through the center of the sieve element 4, ie in the main flow, the two support regions 23 are each slightly off center to the side. This position is advantageous with respect to the fluid flow.
- the two are Support areas or the associated four extensions 20 in their connection areas 24 by a slightly smaller angle, namely only 70 ° deformed from the plane El.
- this is still very low and is far less than 5% of the projected into the through hole 11 in the plane El screen surface, so that nevertheless an unobstructed fluid flow is possible.
- the screen element 3 is here almost completely rounded, so has no plateau in the plane E2.
- FIG. 6 shows, in two partial figures 6-a, 6-b, a first variant of a second one
- Embodiment of a metallic flat gasket 1 according to the invention Embodiment of a metallic flat gasket 1 according to the invention.
- a half-finished sheet metal layer 2a for use in this embodiment is shown in FIG. 6-c
- This second embodiment is characterized in that the extensions 20 are formed independently of each other insofar as they are cut free so that a gap remains between them. However, they are placed so that they lie as close to each other as possible, so that when bulging the extensions of the plane El or when superimposing the overlapping free ends 201 in the overlapping region 29, the surface of the extensions extends so that their extension perpendicular to the longitudinal extension Direction at each point a maximum of 15 ° from a plane parallel to the plane El deviates. In the overlapping region 29, the two free ends 201 of the extensions, which produce the connection of the support region 23, extend substantially parallel to the plane El.
- the total length of the support portion 23 is in the finished seal 1 about 1.4 times the shortest distance 18 between the edges 13 of the through hole.
- the width of the support region is significantly greater than a sheet thickness. It is about 2 mm, and thus corresponds to about 10 times the sheet thickness, while the diameter of the through hole is about 40 mm.
- FIG. 7 illustrates in more detail both the position of the various levels of the metallic flat gasket 2 according to the invention and also different regions of the sieve element 4.
- the plane El extends in the sheet metal layer 2, from which the extensions in the Passage opening 11 protrude, at least in the edge region of the passage opening 11 in the neutral fiber of this sheet metal layer.
- the plane E4 represents the plane in which the extensions 20 are connected to each other in the second embodiment of the invention shown here. Here, the plane is thus related to the interface between the two extensions 20.
- the transition between the two extensions 20n takes place in the fourth plane E4, as indicated in FIG. 3-c.
- There the plane E4 is related to the neutral fiber.
- the sieve element 4 consists in particular of an edge region 45 which extends in a third plane E3 and a
- Curvature region 43 which comprises the entire protruding from the plane E3 portion of the sieve 4.
- the most highly deflected sections of the sieve element 4 extend in the plane E2. Also in the screen element 4, the planes are each related to the neutral fiber.
- Figure 8 shows a variant of the second embodiment of the metallic flat gasket 1 according to the invention.
- Figure 8-a shows the semi-finished sheet metal layer 2a
- Figure 8-b the finished seal 1.
- the two extensions 20 in the half-finished sheet metal layer 2a in Substantially parallel to each other and are separated by a narrow gap 14.
- the extensions 20 have no rectangular shape, but after about% of their length they deviate in an arcuate manner in the direction spaced apart from the other extension, before they return to the original direction after another approx. 25% of their course .
- At their free ends 201 they each have a rounded portion, which is widened in relation to the other course of the respective extension.
- the respective widened free ends 201 result from the arcuate recesses 205.
- the gap 14 between the two extensions has over its entire length a substantially constant width.
- the two widened free ends 201 are superimposed to form an overlap region 29 and connected to each other.
- the projections 20 forming the support region 23 rise out of the plane El.
- the connection between the respective centers of the two connection regions 24 defines the direction of extension of the projections 20.
- a cross section through an extension 20 perpendicular to the extension direction of the extension 20 always runs almost parallel to Level El.
- the embodiment of Figure 8 is thus particularly preferred because it allows a particularly stable support of the bulge portion 43 of the Siebelements 4.
- Welded connection as given in the example of FIG. 6, here also offers a riveted connection, since the enlarged overlapping region 29 offers sufficient space therefor.
- Figures 9 to 11 show further variants of the second embodiment of the metallic flat gasket according to the invention. These each have more than two extensions 20, namely three extensions 20a to 20c in the examples of FIGS. 9 and 11 and four extensions 20a to 20d in the example of FIG.
- the seal 1 of Figure 9 differs further from the previous embodiments in that instead of a half bead now a periodic
- Sealing element 21 is embossed in the single sheet metal layer 2. Instead of a twill fabric, a linen fabric is now realized in the sieve element 4, it again consists of a
- FIG. 10 is a slot-shaped Through hole 11, this is spanned by a curved screen element 4, which is supported on its side facing away from the fluid flow of two support portions 23 a, 23 b.
- the support regions 23a, 23b are each composed of two extensions 20a, 20c and 20b, 20d, which are connected in pairs in an overlapping region 29a, 29b to form an arc 22a, 22b.
- the support regions 23a, 23b are in principle designed as the only support region 23 of the embodiment of Figure 6.
- the support portion 23 of the embodiment of Figure 11 differs from that of Figure 9 in that it not only consists of three substantially rectangular extensions 20a, 20b, 20c, but on the extension 20c still an annular terminal is formed, the in the curved state of the projections 20a, 20b 20c comes to lie on the free ends of the two extensions 20a, 20b and is connected thereto via a welded joint. This avoids that the center of the passage opening, in which usually set the largest flow velocities, is covered by the support portion 23.
- FIG. 12 illustrates a further design possibility of a metallic flat gasket 1 according to the invention in a representation analogous to FIG. Unlike the preceding examples, this has not only one, but two sheet metal layers 2, 3, in each of which a half bead 21, 31 which surrounds the passage opening 11, is formed.
- the edge regions of the two gasket layers 2, 3 come to rest on each other.
- the screen element 4 is received between the two layers 2, 3 and also serves as a deformation limiting element for the beads 21, 31.
- Siebelements 4 is pressed so that no wires can come loose from the mesh.
- the screen element is connected both in the outer contact region 27 via a welded connection with the sheet metal layer 2 as well as in the inner contact region with one of the extensions 20.
- the extensions 20 are for forming the support portion 23 in their Overlap area 29 connected to each other by means of a laser welding connection.
- metallic flat gaskets according to the invention are suitable for various applications in which a flat gasket is also to perform filter tasks in addition to its actual sealing task.
- the metallic flat gaskets according to the invention are particularly suitable in the area of hot gases, in particular waste gases, and preferably as a seal in the region of
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112016005312.6T DE112016005312A5 (de) | 2015-11-20 | 2016-11-15 | Metallische Flachdichtung |
US15/777,528 US10808843B2 (en) | 2015-11-20 | 2016-11-15 | Metallic flat gasket |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202015106338.5U DE202015106338U1 (de) | 2015-11-20 | 2015-11-20 | Metallische Flachdichtung |
DE202015106338.5 | 2015-11-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017085044A1 true WO2017085044A1 (de) | 2017-05-26 |
Family
ID=57421822
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/077679 WO2017085044A1 (de) | 2015-11-20 | 2016-11-15 | Metallische flachdichtung |
Country Status (3)
Country | Link |
---|---|
US (1) | US10808843B2 (de) |
DE (2) | DE202015106338U1 (de) |
WO (1) | WO2017085044A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202018106921U1 (de) * | 2018-12-05 | 2020-03-06 | Reinz-Dichtungs-Gmbh | Flachdichtungen und deren Verwendung |
DE102020106470B3 (de) * | 2020-03-10 | 2020-11-26 | Carl Freudenberg Kg | Dichtungsanordnung und deren Verwendung |
KR20210146591A (ko) * | 2020-05-27 | 2021-12-06 | 현대자동차주식회사 | Egr 쿨러용 em 필터 |
US11732802B2 (en) * | 2020-11-20 | 2023-08-22 | Dana Automotive Systems Group, Llc | Sealing gasket with optimized profile |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202014005866U1 (de) * | 2014-07-18 | 2015-07-22 | Reinz-Dichtungs-Gmbh | Metallische Flachdichtung |
Family Cites Families (16)
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FR1275059A (fr) | 1960-09-24 | 1961-11-03 | Dispositif d'immobilisation d'une pièce rapportée dans un corps creux | |
US4121543A (en) | 1976-01-12 | 1978-10-24 | Hicks Jr Jarvis Byron | Precombustion ionization device |
CA2365467A1 (en) * | 1999-04-19 | 2000-10-26 | International Engine Intellectual Property Company, Llc | Hydraulic system with a combination filter screen and gasket |
US6098597A (en) | 1999-09-07 | 2000-08-08 | Navistar International Transportation Corp | Hydraulic system with a combination filter screen and gasket |
DE102007019946A1 (de) | 2007-04-27 | 2008-10-30 | Elringklinger Ag | Flachdichtung und Verfahren zur Herstellung einer Flachdichtung |
US7549413B1 (en) * | 2007-05-18 | 2009-06-23 | Brunswick Corporation | Flame protection gasket |
DE102009010385A1 (de) | 2009-02-26 | 2010-09-16 | Elringklinger Ag | Siebeinrichtung |
JP2012149558A (ja) | 2011-01-18 | 2012-08-09 | Toyota Motor Corp | 内燃機関の排気再循環装置 |
DE202011004993U1 (de) * | 2011-04-07 | 2012-04-10 | Reinz-Dichtungs-Gmbh | Flachdichtung mit kalandrierter Siebgewebelage |
JP2013151970A (ja) * | 2012-01-25 | 2013-08-08 | Nok Corp | フィルター機能付き金属基板ガスケット及びその製造方法 |
DE202014102014U1 (de) | 2014-04-29 | 2014-05-19 | Elringklinger Ag | AGR-Dichtung mit Siebeinsatz |
US9987577B2 (en) * | 2013-09-04 | 2018-06-05 | Garlock Sealing Technologies, Llc | Kammprofile gaskets |
DE102014105806A1 (de) * | 2014-02-25 | 2015-08-27 | Elringklinger Ag | Verfahren zum Herstellen eines Funktionselements für Flachdichtungen sowie Funktionselement für Flachdichtungen |
DE102014105803A1 (de) * | 2014-04-24 | 2015-10-29 | Elringklinger Ag | Verfahren zum Herstellen eines Funktionselements und Funktionselement |
DE202015103420U1 (de) * | 2015-06-29 | 2016-06-30 | Reinz-Dichtungs-Gmbh | Getriebesteuervorrichtung |
DE202015103421U1 (de) * | 2015-06-29 | 2016-06-30 | Reinz-Dichtungs-Gmbh | Getriebesteuervorrichtung |
-
2015
- 2015-11-20 DE DE202015106338.5U patent/DE202015106338U1/de not_active Expired - Lifetime
-
2016
- 2016-11-15 WO PCT/EP2016/077679 patent/WO2017085044A1/de active Application Filing
- 2016-11-15 US US15/777,528 patent/US10808843B2/en active Active
- 2016-11-15 DE DE112016005312.6T patent/DE112016005312A5/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202014005866U1 (de) * | 2014-07-18 | 2015-07-22 | Reinz-Dichtungs-Gmbh | Metallische Flachdichtung |
Also Published As
Publication number | Publication date |
---|---|
US10808843B2 (en) | 2020-10-20 |
DE112016005312A5 (de) | 2018-08-09 |
DE202015106338U1 (de) | 2017-02-22 |
US20180328490A1 (en) | 2018-11-15 |
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