DE102008047752B4 - Bearing element for supporting an exhaust element, bearing system consisting of several bearing elements and exhaust system consisting of storage system and exhaust element - Google Patents

Abstract

Bearing element (1) for storing an exhaust gas element (3) with a circumference U within an exhaust gas duct (4), the bearing element (1) being flat as a mat with a ceramic and / or metallic fabric network and / or fiber structure and in one direction Ru has a length Lu and a width Bh in a direction Rh, wherein the direction Ru can be aligned parallel to the circumference U of the exhaust gas element (3), characterized in that at least two webs (1.1, 1.2, 1.3) and one in the direction Ru extending crossbar (10) of length Lu are provided, the crossbar (10) being offset with respect to the direction Rh to the respective web (1.1-1.3) and connecting the webs (1.1-1.3) with each other, the length Lu of the crosspiece (10) corresponds to the circumference U.

Description

The invention relates to a bearing element for supporting an exhaust element with a circumference U within an exhaust passage, wherein the bearing element is formed flat as a mat with a ceramic and / or metallic Gewwolletz- and / or fiber structure and has a length Lu and a width Bh, wherein the length Lu extends in a direction Ru and the length Lu extends in a direction Rh, so that the direction Ru and the length Lu are aligned parallel to the circumference U of the exhaust element.

It is already a bearing mat of length L and width B for supporting an exhaust element of the DE 297 09 180 U1 known. The bearing mat is constructed in several parts and has four with respect to the length L juxtaposed, connected across the width B sections with different intumescent properties. The length L corresponds to a circumference U of the exhaust element and the width B of a height H of the exhaust element. Alternatively, a bearing mat is described, which has three with respect to the width B juxtaposed pieces of parts, each of which has the length L.

From the WO 2005/106222 A1 is a, formed from four sections, multi-layer bearing mat of length L and width B known, also for supporting an exhaust element. The width B corresponds to a height H of the exhaust element. Although two auxiliary parts have the width B, but a much smaller length L and an increased intumescent property. These are spaced apart from each other sandwiched between the first portion and the second portion, so that they are positioned in the regions of high curvature on the exhaust element. The pressure increase associated with the intumescence of the auxiliary parts is not critical in these areas of high curvature. The length L of the auxiliary parts is smaller than the width B of the auxiliary parts.

From the DE 197 14 851 C1 are two strip-shaped, longitudinally spaced bearing elements for an exhaust element known.

In the JP 2000240440 A a bearing mat is described which has two hook-shaped ends in the circumferential direction for the purpose of fastening or prestressing, which engage in one another. The elasticity for the bias is achieved by a meander-like intermediate piece.

Bearing mats having recesses and / or webs extending in the direction of the width B are not described in the aforementioned prior art.

From the US 5,079,210 A is a formed of sheet metal bearing element for storing an exhaust element within an exhaust passage known. The bearing element has various shapes of transverse webs and longitudinal webs arranged thereon, which in the installed state, according to the embodiment 2 and 9 at least partially overlapping and / or provided with corresponding welds are disposed within the exhaust pipe. This results in gaps between the exhaust pipe and the bearing element, so that according to the embodiment 9 , a supplementary sealant 5 necessary is.

The object of the invention is to design and arrange a bearing mat in such a way that, taking into account the different physical properties of bearing mats, optimum use of material and a simple bearing structure of the exhaust element are ensured.

The object is achieved according to the invention in that at least two webs and a transverse web extending in the direction Ru the length Lu are provided, wherein the transverse web is arranged with respect to the direction Rh offset to the respective web and connects the webs together. Due to the formation of webs which are distributed over the length Lu of the bearing element and each extend over the width Bh of the bearing element, an exhaust gas element can be optimally stored while simultaneously saving material for the bearing element. The webs can be distributed over a circumference U of the exhaust element and can extend over the width Bh of the bearing element over at least part of a height H of the exhaust element. The transverse web is offset from the respective web and can therefore also be placed next to the respective web, with or without a distance to the respective web. The state of the art is multi-layered, at least in some areas.

The inventively provided crosspiece, which connects the various webs together, ensures adequate fixing or positioning of the webs relative to each other. The webs and the crosspiece can be brought directly against the exhaust element to the plant.

The bearing element is preferably formed as a mat with a ceramic and / or metallic Gewwolletz- and / or fiber structure. The bearing element can be constructed in one or more layers, wherein the respective webs and the associated transverse web are each arranged in one layer.

It may be advantageous for this purpose if a rectangular basic shape G and at least two, the webs and the crosspiece forming Recesses are provided, wherein the webs and recesses with respect to the direction Ru are arranged side by side. Through the use of a rectangular bearing element, a casing or enclosure of the exhaust gas element, regardless of its shape, can be ensured. The length Lu of the bearing element corresponds to the circumference U of the exhaust element, wherein the width Bh of the bearing element is equal to or smaller than the height H of the exhaust element. The recesses according to the invention lead, in addition to the already mentioned advantage of saving material, to the fact that the webs are spaced apart from each other and thus can be distributed over the circumference U of the exhaust gas element.

Within the single-layered design of the bearing element of the transverse web and the respective webs are arranged substantially side by side. In the areas in which the webs are connected to the crosspiece, in particular when using different materials for the transverse web and the webs for the purpose of connection thereof, an overlap of the transverse web may be provided with the respective web.

Further, it may be advantageous if the bearing element is formed in one layer, wherein the webs and / or the transverse web are formed of the same or different materials. Due to the inventive multi-part of the bearing element, consisting of a plurality of webs and connecting the webs crossbar, even with the use of a single-layer bearing element by appropriate design of the webs or the crossbar or by using appropriate materials for the webs and the cross bar ensures optimal storage become. If several, usually mat-like bearing elements are arranged one above the other, then such a storage system would be described as multi-layered.

It may also be advantageous if three webs are provided, which are arranged distributed uniformly or non-uniformly with respect to the length Lu, wherein the respective web has a b1, b2, b3 and the width b1, b2, b3 of the different webs equal or is designed differently large. Depending on the nature of the material used for the respective web, in particular with regard to the functional properties of the web, so sealing, support and / or insulation function, the respective web may have a desired width, which is independent of the width of the other webs to choose is. The same applies to the distances between the webs or the size of the recesses provided there.

It may advantageously be provided that the transverse web and / or at least one web is designed as a sealing, support and / or insulating means. The bearing element may have a sealing, supporting and / or insulating function, depending on which region of the exhaust element the bearing element is used in. The insulating effect includes an insulating effect to prevent heat loss, a damping effect to reduce the sound leakage and in principle a shield to reduce the radiation emitted by the exhaust element radiation.

Since the transverse web preferably extends over the entire circumference U of the exhaust gas element, the latter has the sealing function, so that no exhaust gas can flow past the exhaust gas element. In principle, when used as a sealing means, the transverse web also fulfills, in a certain manner, the supporting function or the bearing function for the exhaust-gas element, at least in the region in which the exhaust-gas element is received by the transverse web. Regardless of the material, the crosspiece will also have an insulating function as a sealant. However, the essential support function could be assigned to the webs, since they can extend over the majority of the height H of the exhaust element and distributed over the circumference can ensure a certain storage of the exhaust element. Due to the recesses provided between the webs, the webs as a whole can not be awarded a sealing function against flowing exhaust gas. However, each land has a local isolation function for itself. By selecting the width of the respective web or the distance between the webs in particular this support and isolation function can be varied and adjusted as desired.

Of particular importance may be for the present invention, when the transverse web is formed as a sealing and supporting means and at least one web is formed as a support means. Since the crosspiece has a relatively small area proportion, its isolation effect is of a subordinate nature. The same applies to the webs, so that the crosspiece is essentially the sealing and supporting function, while the webs in addition to the local isolation function essentially has the support function.

The respective function is based on a corresponding material composition which the user selects from the bearing mats available on the market.

The object is also achieved by a storage system consisting of a bearing element, wherein a second bearing element connected to the first bearing element is provided, which is arranged next to the first bearing element. The functional separation achievable with a bearing element can be varied accordingly when using a bearing system with at least one second bearing element. For example, one could Crosspiece of the second bearing element also an additional sealing effect and / or a supporting action are assigned, while the webs of the second bearing element may possibly only an isolation effect, optionally limited to insulation or damping and / or radiation protection, can be awarded. The use of two or more bearing elements allows the complete enclosure of the exhaust element without recesses.

It can also be advantageous if the first bearing element and the second bearing element are arranged with a distance a with respect to the direction Rh. Thus, the storage system LS or its width Bg can be adapted to the height H of the exhaust element by relative displacement of the bearing elements. In this adjustment or relative displacement arise gaps between the bearing elements, because the webs do not fully engage in the recesses.

It may be advantageous if the second bearing element has a plurality of webs connected via a crosspiece, wherein the webs of the first bearing element are at least partially disposed in a recess of the second bearing element and the webs of the second bearing element at least partially disposed in a recess of the first bearing element are. Both bearing elements have a substantially same basic shape G. Due to the existing mirror symmetry or point symmetry of the basic shape, both bearing elements can be set in one another in the manner of a puzzle. As a result, in particular, a rectangular bearing system can be produced, which can be placed around an exhaust element in a jacket-like manner. The bearing system thus formed, with regard to the various webs on the one hand and the various transverse webs on the other hand and the materials used for the various webs and crossbars arbitrary and insofar adjustable storage, sealing and insulating properties, as described above for the bearing element.

Moreover, it can be advantageous if at least one web has at least one undercut or thickening or at least one undercut or thickening is provided in the region of at least one web, wherein the respective thickening is arranged within a corresponding undercut. By the undercut and the corresponding thickening slipping of the two bearing elements relative to each other, not only in the direction Ru, ie in the circumferential direction, but in particular in the direction Rh, ie in the axial direction, with respect to the exhaust element prevented.

Furthermore, it may be advantageous if the first bearing element is formed at least partially erosion resistant than the second bearing element. In principle, all bearing elements are designed as sealing, support and / or insulating means. All bearing elements usually fulfill the same functions. Alternatively or additionally, it can be provided that only one bearing element has improved erosion properties, that is to say it is formed of material which is more resistant to erosion by exhaust gas. This material is correspondingly expensive and only has to be used for one bearing element. In principle, it is also possible that only the first bearing element is at least partially formed as a sealing and supporting means and the second bearing element is at least partially formed only as a support and / or insulating means. The sealing and insulating function would therefore be separated.

Functional differences between the bearing elements or parts of the bearing elements are possible. The sealing function may be assigned solely to the first bearing element or the transverse web of the first bearing element, while the webs of the first bearing element and the entire second bearing element essentially have a supporting and / or insulating function. With regard to the materials to be selected as well as their costs and taking into account the respective material properties, a corresponding storage system can be constructed or arranged as desired. The storage system preferably has a rectangular shape with the length Lu and the width Bh.

It may be advantageous if the first bearing element and the second bearing element have the same basic shape and at least partially inserted into one another. Due to the same geometry, an efficient use of material for creating the respective bearing element is ensured. The bearing elements can be punched out of rectangular strips or webs of the respective material in a simple manner and assembled in a designated manner.

The object is also achieved by an exhaust system consisting of at least one bearing element or a bearing system, as well as an exhaust element received therein, wherein the exhaust element has a height H and a circumference U and the length Lu corresponds to the circumference U. The exhaust element is disposed within the bearing element or bearing system or surrounded by this. The various webs or transverse webs fulfill the desired function as described above.

It may also be advantageous for this purpose if the width Bh and / or the width Bg is at most between 30% and 90%, preferably 70% of the height H. By a shortened so far education of the Bearing element or the storage system LS can be done in addition to the intended recesses further reduction of the material used.

Ultimately, it may be advantageous if the webs over the circumference U are arranged evenly or unevenly distributed. By a symmetrical distribution of the webs over the circumference U a symmetrical mounting of the exhaust gas element is ensured. In that regard, the installation position of the exhaust element or the exhaust system is not considered.

Moreover, it may be advantageous if the transverse web of the first bearing element and / or the transverse web of the second bearing element is at least partially formed as a sealing means. Since the crossbar is applied over the entire circumference of the exhaust element around, he is essentially the sealing function. Additionally or redundantly, the transverse web of the second bearing element can also be used as a seal.

Furthermore, it may be advantageous if at least one web of the first bearing element and / or at least one web of the second bearing element is at least partially formed as a support and / or insulating means. As already described above, the function of the various webs can be selected with regard to the desired type of storage or insulation.

The object is also achieved by an exhaust system AS consisting of a first bearing element and a second bearing element and an exhaust element with a circumference U and a height H, wherein the exhaust element for storage in an exhaust duct is encased with the respective bearing element, wherein the bearing element as a mat is formed and has a circumference U corresponding length Lu and in a direction Rh has a width Bh, wherein the length Lu extends in a direction Ru, which is aligned parallel to the circumference U of the exhaust element, wherein the first bearing element and the second bearing element with Reference to the direction Rh are arranged at a distance a to each other. The respective bearing element lies directly against the exhaust element and is preferably arranged in the region of the respective end face of the exhaust element. The respective bearing element can also be formed in one or more layers and / or one or more parts, wherein it does not depend on a distance of the parts within a bearing element. Thus, an exhaust element despite sufficient reduction of the surface of the bearing elements or despite considerable savings of mat material can be stored sufficiently. The unoccupied partial surfaces of the exhaust element mounted in this way can be used for other thermal insulation and / or heat recovery concepts. The mat has a ceramic and / or metallic woven mesh and / or fibrous structure having flexible properties for supporting a sintered exhaust element within a metal exhaust duct.

It is also advantageous for this purpose that the first bearing element and / or the second bearing element has a width Bh between 20 mm and 100 mm or between 30 mm and 50 mm. The width of the bearing element is basically measured according to the size of the desired bearing surface, which is also dependent on the height H of the exhaust element. Narrow bearing elements ensure the greatest material savings on the one hand and the largest open spaces on the exhaust element on the other hand.

It is also advantageous for this purpose that the width Bh of the first bearing element and / or the second bearing element is at most between 1% and 50% or at most between 10% and 30% of the height H of the exhaust element. In particular, in exhaust elements with a high height H, the proportionate width Bh of the bearing elements can be very low.

Further advantages and details of the invention are explained in the patent claims and in the description and illustrated in the figures. It shows:

1a . 1b a bearing element;

2 an exhaust system with bearing element and exhaust element;

3 an exhaust system after 2 with exhaust duct;

4a . 4b a storage system consisting of two storage elements;

5 an exhaust system consisting of a storage system with exhaust element;

6a . 6b Bearing elements and their functional separation;

7a Bearing element with undercut;

7b Bearing element with thickening;

7c Storage system after 7a and 7b ;

8a a schematic diagram of the exhaust system with two bearing elements in the structure;

8b the exhaust system after 8a with attached bearing elements;

9 a storage system after 4a by far a.

This in 1 illustrated bearing element 1 has a substantially rectangular basic shape G of length Lu and the width Bh. The bearing element 1 is a mat formed from a fabric and / or fiber structure of metal and / or ceramic. The length Lu is associated with a direction Ru, while the width Bh is associated with a direction Rh which is perpendicular to the direction Ru. The bearing element 1 has a transverse to the direction of Ru crosspiece 10 the length Lu and three running in the direction of Rh webs 1.1 - 1.3 on that over the crossbar 10 connected to each other. The length of the respective bridge 1.1 - 1.3 and the width of the crosspiece 10 Total result in the width Bh of the bearing element 1 , The bridges 1.1 - 1.3 are through three recesses 1.7 . 1.8 . 1.9 educated. The three bridges 1.1 - 1.3 are arranged according to the size of the recess with respect to the direction Ru spaced from each other. The respective bridge 1.1 - 1.3 has the width b1, b2, b3.

This in 8a illustrated bearing system LS consists of an exhaust element 3 and two strip-shaped bearing elements 1 . 2 , The respective bearing element 1 . 2 is at the respective end face of the exhaust element 3 placed. The length Lu of the respective bearing element 1 . 2 corresponds to the circumference U of the exhaust element 3 in the direction of Ru. The respective bearing element 1 . 2 has a width Bh, which is about 10% of the height H of the exhaust element 3 equivalent.

In the 8a illustrated bearing elements 1 . 2 are according to 8b around the exhaust element 3 wound up at the respective front side. The respective bearing element 1 . 2 fulfills the bearing and insulation function on the respective face and optionally or additionally the sealing function.

This in 9 shown bearing system LS corresponds approximately to the in 4a illustrated storage system LS. However, both are bearing elements 1 . 2 spaced apart in the direction of Rh. The distance a is variably adjustable, so that the width Bh of the bearing system LS a height H of the exhaust element 3 is customizable. Due to the relative displacement of the two bearing elements 1 . 2 in the direction of Rh remain the existing recesses 1.7 - 1.9 . 2.7 - 2.9 free. Should due to an increased height H of the exhaust element 3 the distance a be further increased, so would be the two bearing elements 1 . 2 completely spaced, much like in 8a ,

The crossbar 10 has a nose at one end 12 and at the opposite end a corresponding groove 11 on, in which the nose 12 when creating or rolling up the bearing element 1 on an exhaust element 3 according to 2 used or brought to the plant.

In 1b is the bearing element 1 in the rolled up position when applying to an exhaust element 3 according to 2 shown. The three bridges 1.1 - 1.3 are arranged evenly distributed with respect to the circumference U. The nose 12 is inside the groove 11 arranged so that the crosspiece 10 forms a closed circular ring.

According to 2 is the bearing element 1 to 1b respectively. 1a on an exhaust element 3 arranged for storage thereof. The bearing element 1 has a height H with respect to the direction Rh. At one end face, the exhaust element 3 a guard ring 5 on, the exhaust element 3 protects against damage from burping or abutment of the same. The exhaust element 3 has a circumference U with respect to a direction Ru, the length Lu of the bearing member 1 to 1a the circumference U of the exhaust element 3 to 2 equivalent.

The exhaust element 3 with the bearing element arranged thereon 1 forms an exhaust system AS.

According to 3 is the exhaust system AS after 2 inside an exhaust duct 4 , which is only partially drawn for clarity. By means of the crossbar 10 is a seal or storage over the entire circumference U guaranteed. By means of the three bars 1.1 - 1.3 is a completely specific storage of the exhaust element 3 inside the exhaust duct 4 guaranteed.

In the 4a and 4b is a storage system LS consisting of two bearing elements 1 . 2 to 1a shown. The respective bearing element 1 . 2 has three bars 1.1 - 1.3 . 2.1 - 2.3 as well as three recesses 1.7 - 1.9 . 2.7 - 2.9 on. The bridges 1.1 - 1.3 of the first bearing element 1 are within the respective recess 2.7 - 2.9 of the second bearing element 2 arranged. The respective bars 2.1 - 2.3 of the second bearing element 2 are within the respective recess 1.7 - 1.9 of the first bearing element 1 arranged. The respective nose 12 . 22 or the respective groove 11 . 12 of the bearing element 1 . 2 are arranged on the opposite side due to the point-symmetrical arrangement. The storage system LS has an overall width Bg which is greater than the width Bh of the respective bearing element 1 . 2 ,

Both bearing elements 1 . 2 have the same shape. The location of the bearing elements 1 . 2 is point symmetric. The first bearing element 1 is by folding twice in the two image axes provided in the image plane in the position of the second bearing element 2 brought. Accordingly, the orientation of each nose 12 . 22 or the respective groove 11 . 21 swapped accordingly, so that on the respective side of the bearing system LS shown here, a groove-nose pair 11 . 22 respectively. 12 . 21 results.

According to 4b is the storage system LS after 4a shown in rolled condition. With respect to the rectangular basic form according to 4a in the flat state results according to 4b a cylindrical, so far full-surface shape. The two transverse webs 10 . 20 limit the rolled-up storage system LS on the respective end face over the entire circumference U.

This in 5 illustrated exhaust system AS consists of the storage system LS after 4b including the exhaust element received therein 3 with the frontally arranged guard ring 5 ,

According to 6a has the respective bearing element 1 . 2 different functional areas. A functional area is through the crosspiece 10 Are defined. The other functional areas are through the respective bridge 1.1 - 1.3 Are defined. Depending on the type and training of the crossbar 10 and / or the webs 1.1 - 1.3 respectively used materials, the bearing element corresponding functional areas can be assigned.

The same applies to the in 6b shown bearing system LS, consisting of two bearing elements 1 . 2 , Depending on the type and structure of the respective crossbar 10 . 20 or the respective webs 1.1 - 1.3 . 2.1 - 2.3 can be based on the choice of material for the bearing element 1 . 2 the most diverse functional areas, ie sealing function, bearing function and / or insulating function - the latter with regard to heat conduction, heat radiation and sound - are set. The various functional zones are shown hatched differently due to the clarity. The type of hatching used should not allow any conclusion to the materials used in the respective zone or the technical effect thus pronounced, ie the different zones may in principle have partially identical or completely different materials or material combinations with corresponding technical functions, regardless of the type the hatching used.

This in 7a illustrated bearing element 1 points in the area of the respective webs 1.1 - 1.3 each a circular undercut 1.4 - 1.6 on.

The bearing element 2 to 7b points in the area of the respective bridge 2.1 - 2.3 a circular thickening 2.4 - 2.6 on.

This in 7c shown bearing system LS consists of the two according to 7a and 7b illustrated bearing elements 1 . 2 , where the respective thickening 2.4 - 2.6 within the respective undercut 1.4 - 1.6 is arranged. This creates a toothing of the two bearing elements 1 . 2 both in the direction of Ru and - especially by the undercuts 1.4 - 1.6 and the thickenings 2.4 - 2.6 - in the direction of Rh.

The according to 6a and 6b described functional areas also come to the embodiment 7a to 7c into consideration. For the sake of clarity, however, these are not shown.

The technical design features of the various embodiments described in the figure description are also provided in further, not described combinations.

LIST OF REFERENCE NUMBERS

1

Bearing element, mat

1.1

web

1.2

web

1.3

web

1.4

undercut

1.5

undercut

1.6

undercut

1.7

recess

1.8

recess

1.9

recess

10

crosspiece

11

groove

12

nose

2

Bearing element, mat

2.1

web

2.2

web

2.3

web

2.4

thickening

2.5

thickening

2.6

thickening

2.7

recess

2.8

recess

2.9

recess

20

crosspiece

21

groove

22

nose

3

exhaust element

4

exhaust duct

5

protective ring

H

height

Bra

width

rh

direction

U

scope

Lu

length

Ru

direction

b1

Wide bridge 1.1 . 2.1

b2

Wide bridge 1.2 . 2.2

b3

Wide bridge 1.3 . 2.3

G

Basic form

LS

storage system

AS

exhaust system

bg

Width of the storage system

Claims (17)

Bearing element ( 1 ) for storing an exhaust element ( 3 ) with a circumference U within an exhaust gas duct ( 4 ), wherein the bearing element ( 1 ) is formed flat as a mat with a ceramic and / or metallic Gewetzetz- and / or fiber structure and in a direction Ru has a length Lu and in a direction Rh has a width Bh, wherein the direction Ru parallel to the circumference U of the exhaust element ( 3 ) is alignable, characterized in that at least two webs ( 1.1 . 1.2 . 1.3 ) and running in the direction of Ru crosspiece ( 10 ) of the length Lu are provided, wherein the transverse web ( 10 ) with respect to the direction Rh offset to the respective web ( 1.1 - 1.3 ) is arranged and the webs ( 1.1 - 1.3 ), wherein the length Lu of the crosspiece ( 10 ) corresponds to the circumference U. Bearing element ( 1 ) according to claim 1, characterized in that a rectangular basic shape G and at least two, the webs ( 1.1 - 1.3 ) and the crosspiece ( 10 ) forming recesses ( 1.7 . 1.8 . 1.9 ) are provided, wherein the webs ( 1.1 - 1.3 ) and recesses ( 1.7 - 1.9 ) are arranged side by side with respect to the direction Ru. Bearing element ( 1 ) according to claim 1 or 2, characterized in that the bearing element ( 1 ) is formed in one layer, wherein the webs ( 1.1 - 1.3 ) and / or the crosspiece ( 10 ) are formed of the same or different materials. Bearing element ( 1 ) according to one of the preceding claims, characterized in that three webs ( 1.1 - 1.3 ) are provided, which are arranged distributed with respect to the length Lu equal or unevenly, wherein the respective web ( 1.1 - 1.3 ) has a width (b1, b2, b3) and the width (b1, b2, b3) of the various webs ( 1.1 - 1.3 ) is the same or different sizes. Bearing element ( 1 ) according to one of the preceding claims, characterized in that the transverse web ( 10 ) and / or at least one bridge ( 1.1 - 1.3 ) is designed as a sealing, support and / or insulating means. Bearing element ( 1 ) according to one of the preceding claims, characterized in that the transverse web ( 10 ) is formed as a sealing and supporting means and at least one web ( 1.1 - 1.3 ) is designed as a support means. Bearing system LS consisting of a bearing element ( 1 ) according to one of the preceding claims, characterized in that one with the first bearing element ( 1 ) connected second bearing element ( 2 ) is provided, which is formed flat as a mat with a ceramic and / or metallic Gewwolletz- and / or fiber structure and adjacent to the first bearing element ( 1 ), wherein the bearing system LS has a width Bg with respect to the direction Rh. Bearing system LS according to claim 7, characterized in that the first bearing element ( 1 ) and the second bearing element ( 2 ) are arranged with respect to the direction Rh at a distance a. Bearing system LS according to claim 7 or 8, characterized in that the second bearing element ( 2 ) several via a crossbar ( 20 ) connected webs ( 2.1 . 2.2 . 2.3 ), wherein the webs ( 1.1 - 1.3 ) of the first bearing element ( 1 ) at least partially in a recess ( 2.7 . 2.8 . 2.9 ) of the second bearing element ( 2 ) are arranged and the webs ( 2.1 - 2.3 ) of the second bearing element ( 2 ) at least partially in a recess ( 1.7 . 1.8 . 1.9 ) of the first bearing element ( 1 ) are arranged. Bearing system LS according to claim 7 to 9, characterized in that at least one web ( 1.1 - 2.3 ) at least one undercut ( 1.4 . 1.5 . 1.6 ) or a thickening ( 2.4 . 2.5 . 2.6 ) or in the region of at least one web ( 1.1 - 2.3 ) at least one undercut ( 1.4 - 1.6 ) or a thickening ( 2.4 - 2.6 ) is provided, wherein the respective thickening ( 2.4 - 2.6 ) within a corresponding undercut ( 1.4 - 1.6 ) is arranged. Bearing system LS according to one of claims 7 to 10, characterized in that the first bearing element ( 1 ) is formed at least partially erosion resistant than the second bearing element ( 2 ). Bearing system LS according to one of claims 7 to 11, characterized in that the first bearing element ( 1 ) and the second bearing element ( 2 ) have the same basic shape and are at least partially intermeshable. Exhaust system AS consisting of at least one bearing element ( 1 . 2 ) or a storage system LS according to one of the preceding claims, as well as an exhaust element received therein ( 3 ), wherein the exhaust element ( 3 ) has a height H and a circumference U and the length Lu corresponds to the circumference U. Exhaust system AS according to claim 13, characterized in that the width Bh and / or the Width Bg is at most between 30% and 90%, preferably 70% of the height H. Exhaust system AS according to claim 13 or 14, characterized in that the webs ( 1.1 - 2.3 ) are distributed over the circumference U equal or unevenly distributed. Exhaust system AS according to one of claims 13 to 15, characterized in that the transverse web ( 10 ) of the first bearing element and / or the crosspiece ( 20 ) of the second bearing element are at least partially formed as a sealing means. Exhaust system AS according to one of claims 12 to 15, characterized in that at least one web ( 1.1 - 1.3 ) of the first bearing element ( 1 ) and / or at least one bridge ( 2.1 - 2.3 ) of the second bearing element ( 2 ) is at least partially formed as a support and / or insulating means.

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