WIRE FABRIC AND METHOD FOR PRODUCTION

Abstract

Wire mesh (1) for a regenerator device (100), comprising at least one layer (2) of fabric made of warp wires (3) and weft wires (4), wherein the warp wires (3) and the weft wires (4) are interwoven and span at least one fabric surface (6), wherein the warp wires (3) extend along a first extension (7) of the fabric surface (6) and wherein the weft wires (4) extend along a second extension (8) of the fabric surface (6), characterized in that the fabric surface (6) has at least one interruption (9) which interrupts at least one weft wire (4) and / or at least one warp wire (3) along the first extension (7) and / or the second extension (8) of the fabric surface (6) at least once.

Description

[0001] The present invention relates to a wire mesh, particularly for a regenerator device, comprising at least one layer of woven fabric consisting of warp and weft wires, which are interwoven and span at least one fabric surface. The warp wires extend along a first extension and the weft wires along a second extension of the fabric surface. The present invention further relates to a method for manufacturing such a wire mesh. The present invention also relates to a regenerator device comprising at least one outer housing assembly in which at least one flow section with at least one free flow cross-section is formed, through which at least one fluid can be conducted in at least one flow direction. The present invention further relates to a method for manufacturing such a regenerator device.

[0002] It is known that the efficiency of Stirling engines or heat pumps, especially Vuilleumier heat pumps, can be increased by using a regenerator.

[0003] A hot or cold fluid is circulated back and forth through such a regenerator. A buffering material is incorporated into the regenerator, which is permeable to the fluid and possesses good heat capacity.

[0004] For example, metal foam can be used here. However, layering several layers of wire mesh is more efficient.

[0005] A disadvantage of stacking wire mesh layers is that regenerators are often designed in a ring shape, requiring ring-shaped wire mesh layers to be punched out from a rectangular wire mesh sheet. This results in a sometimes considerable amount of waste. Furthermore, the individual mesh layers are often stacked at a right angle to each other to provide suitable flow resistance. This is a complex process. Overall, the production costs for a regenerator manufactured in this way are relatively high. An embodiment with less waste is disclosed, for example, in CH 234 431 A, where appropriately punched mesh pieces are laid lengthwise (offset from each other) to form a ring. However, this further increases the assembly effort.

[0006] The disadvantageous waste when using multiple layers of wire mesh can be avoided by winding the wire mesh. However, this method has the disadvantage of excessive heat transfer via the weft or warp wires. Consequently, such a regenerator has a lower efficiency. Winding a single wire is also possible, as disclosed in DE 10 2009 023 969 A1. DE 102 04 148 A1 discloses the introduction of perforations into a layer of fabric.

[0007] It is therefore the object of the present invention to provide a regenerator device with a wire mesh which is simpler and more efficient to manufacture and which has a satisfactory efficiency.

[0008] This problem is solved by a wire mesh having the features of claim 1, by a method for producing such a wire mesh having the features of claim 5, by a regenerator device having the features of claim 8, and by a method for producing such a regenerator device having the features of claim 14. Preferred embodiments of the invention are the subject of the dependent claims. Further advantages and features of the invention will become apparent from the exemplary embodiments.

[0009] The wire mesh according to the invention is intended for use on or in a regenerator device. The wire mesh comprises at least one layer of warp and weft wires, wherein the warp and weft wires are interwoven and span at least one mesh surface. The warp wires extend along a first extension of the mesh surface, and the weft wires extend along a second extension of the mesh surface. Furthermore, the mesh surface has at least one interruption which interrupts at least one weft wire and / or at least one warp wire at least once along the first extension and / or the second extension of the mesh surface.

[0010] According to the invention, the wire mesh is suitable for use on or in a regenerator device, wherein such a regenerator device preferably provides a regenerator, for example, for a Stirling engine and / or for heat pumps, in particular for Vuilleumier heat pumps. Such a regenerator can generally be used wherever colder and warmer fluids are circulated and where heat exchange needs to be buffered.

[0011] In the wire mesh according to the invention, depending on the installation position of the wire mesh, warp wires and / or weft wires are interrupted at least once in the first and / or second dimension of the mesh surface. The terms warp wires and weft wires serve primarily to describe the basic orientation of the wires in the mesh. The warp wires and weft wires are interwoven transversely or at a 90° angle to each other. Whether a weft wire and / or a warp wire is interrupted depends in particular on the orientation or installation position of the wire mesh.

[0012] Preferably, the tissue layer or tissue surface continues to form a substantially continuous tissue despite the interruption or multiple interruptions. It is particularly preferred that the tissue layer or tissue surface remains stably held together despite the interruption.

[0013] According to the invention, the interruption of the weft wires or warp wires is intended in particular to interrupt or reduce heat transfer across or along the weft wires or warp wires over the entire fabric surface.

[0014] According to the invention, the fabric surface can be produced using all types of weave. In particular, all wire thicknesses, wire shapes, and wire alloys can be used to produce the wire fabric according to the invention.

[0015] Preferably, the wire mesh can be calendered and / or thermally treated, such as sintered.

[0016] The weft and warp wires are preferably interwoven substantially at right angles to each other. Thus, the weft and warp wires are also preferably situated within the fabric surface substantially at right angles to one dimension of the fabric surface and substantially parallel to the other dimension of the fabric surface. In other embodiments, however, a fabric surface can also be punched or cut out from such a fabric, in which case the weft and warp wires no longer need to be situated at right angles or parallel to the dimensions of the fabric surface.

[0017] The wire mesh according to the invention offers many advantages. A significant advantage is that the wire mesh provides a regenerator core that can be manufactured particularly easily and effectively. Compared to the conventional layering of several rectangular fabric layers, a significantly better utilization of the wire mesh can be achieved. The typically round cross-section of regenerator devices leads to poor utilization of the fabric area in layered fabric systems. The wire mesh according to the invention offers the advantage that it can be wound into a regenerator core, thus eliminating the need to cut the usually rectangular fabric area into a round cross-section. Therefore, the entire fabric area can be used, increasing the utilization of the fabric area to almost 100%.

[0018] The heat transfer along the warp or weft wires, which is otherwise detrimental when winding wire mesh, is effectively and sufficiently prevented by introducing an interruption or interruptions into the fabric surface.

[0019] By interrupting the warp wires or weft wires along at least one extension of the fabric surface, direct and immediate heat transfer along the warp wires or weft wires is reduced to such an extent that, despite the winding of the fabric layer, a regenerator core with an efficient efficiency is provided.

[0020] Preferably, several interruptions are provided in the fabric surface, at least some of which are arranged offset from one another. In particular, several interruptions can be arranged side by side and one above the other. These multiple interruptions can then preferably be arranged in several rows. The rows are then particularly preferably staggered or spaced apart, so that the interruptions of two adjacent rows are not directly above one another. This ensures that the fabric layer or fabric surface remains stable despite a large number of interruptions and that a substantially continuous fabric is maintained.

[0021] The interruption is preferably designed as a slit. Such a slit is created, in particular, by a cut in the fabric surface. This slit preferably cuts through at least one warp wire and / or at least one weft wire, whereby the creation of such a slit preferably results in substantially no material being removed from the fabric surface. Thus, a slit created as an interruption preferably has a certain length, and the slit has no or virtually no width.

[0022] In advantageous embodiments, a slit is introduced into the fabric surface as an interruption by punching, laser cutting, and / or cutting. Furthermore, it is advantageous for the slit to have a substantially elongated or linear extent. In other preferred embodiments, however, a slit can also have a curved shape.

[0023] In other preferred embodiments, a break can also be introduced into the fabric surface by removing a specific section of the fabric. For example, a break can also be created by introducing holes or recesses with other geometric shapes.

[0024] In advantageous embodiments, the slots have a length of 10 to 100 mm, with at least one web arranged between two adjacent slots, preferably having a dimension of 1 to 20 mm. Adjacent slots are understood to be those arranged side by side or one above the other.

[0025] The method according to the invention is suitable for producing a wire mesh for a regenerator device with at least one layer of fabric consisting of warp and weft wires, wherein the warp and weft wires are interwoven and form at least one fabric surface. The warp wires extend along a first dimension of the fabric surface, and the weft wires extend along a second dimension of the fabric surface. Furthermore, after the weaving process, at least one interruption is introduced into the fabric surface, which interrupts at least one weft wire and / or at least one warp wire at least once along the first dimension and / or the second dimension of the fabric surface.

[0026] According to the invention, the wire mesh or the mesh surface can be woven to a specific size, and the wire mesh produced in this way can also be punched, cut, laser-cut or divided in other ways into desired lengths, widths and / or geometries after the weaving process.

[0027] The inventive method for producing a wire mesh also offers many advantages. In particular, the method produces a wire mesh that can be advantageously used on or in regenerator devices.

[0028] Preferably, at least one interruption is formed in the form of a slit, wherein such a slit is preferably introduced into the tissue surface by at least one punching, laser, hole-punching, and / or cutting operation. In this way, a precise interruption can be introduced into the tissue surface in a simple manner.

[0029] Particularly preferred are several interruptions in the fabric surface, at least two of which are introduced into the fabric surface essentially simultaneously. Preferably, some and especially all interruptions are incorporated into the fabric surface at the same time. For example, it is possible that a large number of interruptions or slits are introduced into the fabric surface or a section of the fabric surface simultaneously during a punching process with a suitably designed punch. In other embodiments, the interruptions can also be introduced into the fabric surface essentially continuously in a continuous process. For example, it is possible that the fabric surface is drawn under a knife or an arrangement of several knives, whereby the...The knives are brought into contact with the tissue surface to create breaks and are removed from the tissue surface in the area of ​​the provided ridges.

[0030] The regenerator device according to the invention comprises at least one outer housing assembly in which at least one flow section with at least one free flow cross-section is formed, through which at least one fluid can be guided in at least one flow direction. At least one wire mesh, as previously described, is arranged in the free flow cross-section.

[0031] The regenerator device according to the invention is particularly suitable for use in or on a Stirling engine or in heat pumps, especially Vuilleumier heat pumps. The regenerator device can be used particularly where fluids at different temperatures are circulated and where heat exchange between these fluids needs to be buffered.

[0032] In particular, the wire mesh is arranged in the flow cross-section or flow section in such a way that it is essentially completely filled by the wire mesh.

[0033] The fact that a fluid is conductable through the flow section or the free flow cross-section in the direction of flow means in particular that a fluid and preferably a gas can be guided back and forth in the flow device, whereby a flow direction in the axial direction is particularly preferred.

[0034] Particularly preferably, the fluid can flow through the free flow cross-section in only one orientation, preferably in an axial orientation.

[0035] Preferably, the wire mesh is covered on both sides in the flow direction by at least one finishing layer. Such a finishing layer can be designed as a protective layer, preferably made of a woven fabric or wire mesh. This type of finishing layer provides a visually appealing seal for the free flow cross-section, so that the wire mesh wound into a regenerator core is no longer directly visible or accessible in the finished regenerator device. This reduces the risk of injury from protruding warp or weft wires.

[0036] The regenerator device according to the invention offers many advantages. A significant advantage is that the interruption or multiple interruptions in the wire mesh effectively reduce excessive heat transfer along the warp wires or weft wires through the free flow section.

[0037] Preferably, the wire mesh is wound up and arranged within the free flow cross-section. This eliminates the need to layer the regenerator core from individual wire mesh layers, as is the case with known regenerator devices. This results in significantly more efficient use of the wire mesh, as there is virtually no waste. Consequently, the wire mesh can provide a regenerator core particularly easily and efficiently, and despite the wound wire mesh, the interruptions in the mesh ensure good efficiency.

[0038] The weft wires are preferably arranged along the flow direction. This means, in particular, that the weft wires run from one side of the flow section to the other side, so that they are arranged essentially axially. The warp wires then run in a different orientation and are preferably arranged radially.

[0039] In preferred embodiments, at least one inner housing assembly is provided, wherein the free flow cross-section is formed between the outer and the inner housing assembly. In such an embodiment, a regenerator core made of wire mesh is formed or arranged between the two housing assemblies. The inner housing assembly can, in particular, also have a through-opening in which, in particular, no regenerator core is arranged.

[0040] In suitable embodiments, at least one through-opening is provided in the inner housing. This provides a regenerator unit through whose central area, for example, a piston or a displacement piston of a Stirling engine can pass.

[0041] Preferably, the free flow cross-section has a substantially circular cross-section. In particular, the regenerator unit as a whole also has a substantially circular cross-section. This makes it possible to provide a regenerator unit that can, for example, be arranged inside a cylinder with a circular cross-section.

[0042] The method according to the invention is suitable for manufacturing a regenerator device as previously described. In this process, at least one wire mesh as previously described is wound up and inserted into or arranged in the free flow cross-section of the outer housing device.

[0043] In this context, "wound up" refers specifically to being rolled up or wound around a fixed point. This fixed point can be provided, in particular, by the end of the wire mesh itself and / or by a separate solid body.

[0044] The wound wire mesh preferably completely fills the free flow cross-section. The wound wire mesh regenerator core is wound particularly tightly to form a stable core with sufficient efficiency. To ensure a particularly strong bond between the layers of the regenerator core, the wound wire mesh can be thermally treated, for example by sintering and / or annealing, or it can be calendered during winding.

[0045] The inventive method for manufacturing a regenerator device offers many advantages. The special design of the wire mesh with its interruptions in the mesh surface makes it possible to produce an effective regenerator core from wire mesh. This core is not produced by complex layering of fabric, but rather by a winding process. As a result, the wire mesh can be manufactured particularly efficiently, utilizing the entire mesh surface, and depending on the specific design, even without any waste.

[0046] Preferably, the wire mesh is wound around at least one inner housing assembly. For this purpose, the wire mesh is preferably attached to the inner housing assembly and then preferably wound tightly around it until the inner housing assembly and the wound wire mesh have reached a predetermined cross-section. The inner housing assembly, together with the wound wire mesh, can then be inserted into the outer housing assembly.

[0047] To ensure tight winding of the wire mesh, the mesh can be kept under tension during the winding process. In other configurations, the wire mesh can also be pressed, compacted, and / or recalibrated during winding, either additionally or exclusively.

[0048] In appropriate advanced training, the housing assembly and / or the wire mesh are cut to a predetermined length after manufacturing. This makes it possible to produce several regenerator units at once. First, wire mesh is inserted into a long housing assembly as an intermediate product. Then, regenerator units of the desired length are cut off.

[0049] In other advantageous embodiments, several individual regenerator units can also be combined to form a larger regenerator unit or a regenerator unit with a larger or longer flow section.

[0050] Preferably, in all embodiments, further processing or finishing steps can follow the manufacture of the regenerator device. In particular, the regenerator device can be completely or partially post-processed by turning and / or polished and / or ground and / or provided with finishing layers, especially made of wire mesh.

[0051] In preferred advanced processes, the wound wire mesh can be calendered and / or thermally treated, for example sintered, during and / or after winding. This allows for the production of a particularly strong and stable regenerator core.

[0052] The wire mesh can be pressed and / or compacted during and / or after winding.

[0053] It is also advantageous to thermally treat the regenerator unit.

[0054] Further advantages and features of the present invention will become apparent from the exemplary embodiments, which are explained below with reference to the accompanying figures.

[0055] It shows: Fig. 1 a schematic representation of a Sterling engine with a regenerator device according to the invention with a wire mesh according to the invention; Fig. 2 a schematic representation of a further embodiment of a Sterling motor with a regenerator device according to the invention with a wire mesh according to the invention; Fig. 3 a purely schematic top view and a perspective view of the regenerator device according to the invention Fig. 2 with a wire mesh according to the invention Fig. 5; Fig. 4 a purely schematic sectional view through the regenerator device according to Fig. 3; Fig. 5 a purely schematic top view of a wire mesh according to the invention; and Fig. 6 a schematic representation of the manufacture of a regenerator device according to the invention with a wire mesh according to the invention.

[0056] In Fig. Figure 1 is a purely schematic representation of a variant of a Stirling engine 200 in which the regenerator device 100 according to the invention can be used with a wire mesh 1 according to the invention.

[0057] The in Fig. Figure 1 of the illustrated Stirling engine 200 comprises two cylinders 205, each containing a movable working piston 201. One cylinder 205 is connected to a heating source 204, which heats the fluid 206 in that cylinder. As the fluid 206 heats, it expands and moves the working piston 201 downwards, causing the coupled working piston 201 of the other cylinder 205 to move upwards. This pushes cold fluid 206 through the connection 207 to the cylinder 205 containing the heating source 204. The piston rods of both pistons 201 and 201 are connected to a drive 210.

[0058] A cooling element 203 is provided in connection 207, through which the hot air flowing from the hot side 208 through connection 207 is cooled. During operation of the Stirling engine 200, the fluid 206 is moved back and forth between the hot side 208 and the cold side 209 via connection 207. In doing so, the fluid 206 passes not only through the area containing the cooling element 203, but also through the regenerator device 100 according to the invention, which buffers the heat exchange.

[0059] The regenerator device 100 used here has a basic structure as described in more detail in the following figures. However, in contrast to the embodiment of a regenerator device 100 described later, a regenerator device 100 which is completely lined with wire mesh inside and, in particular, has no through-opening 106, can also be advantageously used in a Sterling engine 200 shown here.

[0060] In Fig. Figure 2 shows a further embodiment of a Stirling engine 200 in which a regenerator device 100 according to the invention can be advantageously used. The embodiment shown comprises only one cylinder 205 in which a working piston 201 and a displacer piston 202 are movably arranged. The piston rods of the two pistons 201, 202 are coupled to a drive 210.

[0061] In the embodiment shown here, the working piston 201 moves in the area of ​​the cylinder 205 that is surrounded by a cooling element 203. This part of the cylinder 205 represents the cold side 209 of the cylinder 205.

[0062] A heating source 204 is provided in the lower part of the cylinder 205, which heats the fluid 206 in this part of the cylinder 205. The displacer piston 202 is located here.

[0063] In the illustrated embodiment, a regenerator device 100 according to the invention is provided around the displacer piston, which is equipped with a wire mesh 1 according to the invention. In the design of the Stirling engine 200 shown here, the regenerator device 100 is essentially annular with a through-opening 106, through which the displacer piston 202 can pass.

[0064] The regenerator device 100 according to the invention can advantageously be used not only in Stirling engines 200. Another advantageous area of ​​application is in the field of heat pumps, in particular Vuilleumier heat pumps. In general, the regenerator device 100 according to the invention can always be advantageously used where fluids at different temperatures are transferred back and forth and where heat exchange needs to be buffered.

[0065] In Fig. Figure 3 is a purely schematic representation of a regenerator device 100 according to the invention in a top view and in a perspective side view, as used in the Stirling engine 200 according to Fig. 2. The regenerator device 100 is essentially ring-shaped and has a through-opening 106 into which the displacement piston 202 of the Stirling engine 200 can engage.

[0066] The regenerator device 100 shown comprises an outer housing 101, which in the embodiment shown here is designed as an outer sleeve 107. Furthermore, the regenerator device 100 shown comprises an inner housing 105, which here is provided as an inner sleeve 108. A flow section 102 is formed between these two housing assemblies 101, 105, or between the two sleeves 107, 108, which has a free flow cross-section 103.

[0067] In this free flow cross-section 103, a wound wire mesh 1 is provided as a regenerator core 109, which is designed according to the invention.

[0068] Such a regenerator device 100 can also be modified for use in a Stirling engine 200 according to Fig. 1. In that case, however, a regenerator device 100 without an inner housing device 105 is preferably used, t The entire interior of the regenerator device 100 is filled by a regenerator core 109 made of a wire mesh 1 according to the invention.

[0069] In Fig. Figure 4 is purely schematic, a side sectional view along the in Fig. Figure 3 shows the section plane AA through a regenerator device 100 according to the invention. In this view, the regenerator core 109, wound from wire mesh 1, can be seen, which is arranged in the free flow cross-section 103 between the outer housing device 101 and the inner housing device 105.

[0070] In the illustration shown, the flow direction 104, or the fluid flow through the regenerator unit 100, is indicated purely schematically by the dashed arrows. In the embodiment shown here, the flow direction 104 is essentially axial, whereby a substantially radial flow through the regenerator unit is prevented by the housing unit 101, 105.

[0071] In Fig. Figure 5 is a purely schematic top view of a wire mesh 1 according to the invention. The wire mesh 1 comprises a fabric layer 2 made of warp wires 3 and weft wires 4, wherein the warp wires 3 and the weft wires 4 are interwoven and span a fabric surface 6.

[0072] In the illustrated embodiment of the wire mesh 1, the warp wires 3 extend along a first extension 7 of the mesh surface. The weft wires 4 run substantially transversely to this along a second extension 8 of the mesh surface 6.

[0073] According to the invention, the wire mesh 1 is wound onto a regenerator core 109, this winding in the illustrated embodiment of the regenerator device 100 being carried out along the orientation of the warp wires 3, i.e. along the first extension 7 of the fabric surface 6. Thus, in the illustrated embodiment, the weft wires 4 run along the flow direction 104 or in the axial direction through the regenerator device 100.

[0074] To prevent excessively rapid heat transfer along the weft wires 4 through the free flow cross-section 103, several interruptions 9 are introduced into the fabric surface 6 in the illustrated embodiment of the wire mesh 1 according to the invention, whereby the weft wires 4 are interrupted at least at one point along the second extension 8. This interrupts the heat transfer from one side to the other of the regenerator device 100 in the axial direction.

[0075] To minimize heat transfer along the weft wires 4 while maintaining a substantially stable and continuous fabric surface 6, the multiple breaks 9 are arranged in rows. Adjacent rows are offset or spaced apart to ensure the most stable wire mesh 1 possible.

[0076] In the illustrated embodiment, the interruptions 9 are provided as slots 10, wherein, for better illustration of the structure of the wire mesh 1, the slots 10 in the illustrated embodiment have both a length 11 and a width 5. However, it is preferred that the slots 10 have a certain length 11 but no width or a width 5 close to zero, so that as little mesh area 6 as possible is lost through the slots 10.

[0077] In other configurations, the interruptions 9 can also be introduced into the fabric surface 6 in a different way. For example, round holes or recesses with other geometries can also be introduced into the fabric surface 6, which may result in a loss of part of the fabric surface 6.

[0078] The slots 10 or the breaks 9 preferably have a length of 10 to 100 mm, wherein between individual adjacent breaks 9 or slots 10, webs 12 remain which do not have breaks 9 and thus contribute to better stabilization of the fabric surface 6. The webs preferably have a dimension 13 between 1 mm and 20 mm.

[0079] In Fig. Figure 6 schematically illustrates the manufacturing process of a regenerator device according to the invention. The regenerator device 100 shown here comprises an outer housing 101 and an inner housing 105 with a through-opening 106.

[0080] To manufacture the regenerator device 100, a strip of the wire mesh 1 according to the invention is first attached to the inner housing device 105. The wire mesh 1 can preferably be glued, welded, or connected to the inner housing device 5 in other suitable ways.

[0081] The wire mesh 1 is now wound around the inner housing assembly 105 until the desired thickness of the regenerator core 109 made of wire mesh 1 is achieved. During winding, the wire mesh 1 is kept under tension so that it is wound tightly around the inner housing assembly 105. This results in a particularly stable and effective regenerator core 109.

[0082] To achieve a particularly stable and effective regenerator core 109, the wire mesh 1 can be sintered and / or calendered after winding or in between.

[0083] Once a sufficiently strong regenerator core 109 made of wire mesh 1 has been wound around the inner housing device 105, the outer housing device 101 can then be attached, thereby completing the regenerator device 100 according to the invention.

[0084] By winding the wire mesh 1 around the inner housing device 105, the wire mesh 1 used for the regenerator device 100 can be used particularly effectively.

[0085] Especially with ring-shaped regenerator devices, the conventional stacking of essentially rectangular fabric layers results in a considerable amount of waste, as the rectangular fabric layers must be punched out into a ring shape. Furthermore, stacking fabric layers to form a regenerator core is time-consuming and, depending on the design, sometimes requires manual intervention.

[0086] The special design of the wire mesh 1 with interruptions 9 also allows a regenerator 100 with an effective efficiency to be provided without excessively rapid heat transfer via the axially running weft wires 4.

[0087] A regenerator unit 100 produced in this way can be further processed in all embodiments. In particular, the regenerator unit 100 can be post-processed by turning and / or grinding, polishing and / or readjusting. In addition, depending on the application and design, at least one finishing layer 110 can be applied to the axial sides of the regenerator unit 100 or the flow section 102.

[0088] These finishing layers 110 are preferably provided by a fabric layer or by wire mesh layers, which are die-cut in a ring shape. This creates a visually appealing and also clean finish, so that in particular it is prevented that a user is injured by protruding wires of the wound wire mesh 1. Reference symbol list: 1 wire mesh 2nd tissue layer 3 warp wire 4 shot wire 5 width 6 tissue area 7 first expansion 8 second expansion 9 Interruption 10 slots 11 Length 12 Bridge 13. Expansion 100 Regenerator unit 101 external housing equipment 102 Flow section 103 Flow cross-section 104 Flow direction 105 internal housing arrangement 106 Passage opening 107 outer sleeve 108 inner sleeve 109 Regenerator core 110 Final position 200 Stirling engine 201 working pistons 202 Displacement pistons 203 heat sinks 204 Heat source 205 cylinders 206 Fluid 207 connection 208 hot side 209 cold side 210 drive

Claims

[1] Wire mesh (1) for a regenerator device (100), comprising at least one layer (2) of warp wires (3) and weft wires (4), wherein the warp wires (3) and the weft wires (4) are interwoven and span at least one fabric surface (6), wherein the warp wires (3) extend along a first extension (7) of the fabric surface (6) and wherein the weft wires (4) extend along a second extension (8) of the fabric surface (6), characterized by , that the fabric surface (6) has at least one interruption (9) which interrupts at least one weft wire (4) and / or at least one warp wire (3) at least once along the first extension (7) and / or the second extension (8) of the fabric surface (6). [2] Wire mesh (1) according to claim 1, characterized by , that several interruptions (9) are provided, at least some of which are arranged offset from each other. [3] Wire mesh (1) according to any one of the preceding claims, characterized by , that the interruption (9) is formed as a slot (10). [4] Wire mesh (1) according to any one of the preceding claims, characterized by , that the slots (10) have a length of 10 to 100 mm and that at least one web (12) with an extent (13) of 1 to 20 mm is arranged between two adjacent slots. [5] Method for producing a wire mesh (1) for a regenerator device (100) with at least one fabric layer (2) of warp wires (3) and weft wires (4), wherein the warp wires (3) and the weft wires (4) are interwoven and span at least one fabric surface (6), wherein the warp wires (3) extend along a first extension (7) of the fabric surface (6) and wherein the weft wires (4) extend along a second extension (8) of the fabric surface (6), characterized by, that after the weaving process at least one interruption (9) is introduced into the fabric surface (6) which interrupts at least one weft wire (4) and / or at least one warp wire (3) at least once along the first extension (7) and / or the second extension (8) of the fabric surface (6). [6] Method according to the preceding claim, characterized by , that the interruption (9) is slit-shaped and is introduced into the tissue surface (6) by at least one punching, laser, hole-punching and / or cutting process. [7] Method according to one of the two preceding claims, characterized by that several interruptions (9) are provided in the tissue surface (6), at least two of which are introduced into the tissue surface (6) essentially simultaneously and / or continuously. [8] Regenerator device (100) comprising at least one outer housing device (101) in which at least one flow section (102) with at least one free flow cross-section (103) is formed, through which at least one fluid can be conducted in at least one flow direction (104), characterized by , that at least one wire mesh (1) according to at least one of claims 1 to 4 is arranged in the free flow cross-section (103). [9] Regenerator device (100) according to the preceding claim, characterized by , that the wire mesh (1) is arranged wound up in the free flow cross-section (103). [10] Regenerator device (100) according to one of the two preceding claims, characterized by , that the firing wires (4) are arranged along the direction of flow (104). [11] Regenerator device (100) according to any one of the preceding claims 8 to 10, characterized by, that at least one inner housing device (105) is provided, wherein the free flow cross-section (103) is formed between the outer (101) and the inner housing device (105). [12] Regenerator device (100) according to any one of the preceding claims 8 to 11, characterized by , that at least the inner housing assembly (105) has at least one through-opening (106). [13] Regenerator device (100) according to any one of the preceding claims 8 to 12, characterized by , that the free flow cross-section (103) has a substantially round cross-section. [14] Method for manufacturing a regenerator device (100) according to any one of the preceding claims 8 to 13, characterized by , that at least one wire mesh (1) according to at least one of claims 1 to 4 is wound up and inserted into the free flow cross-section (103) of the outer housing device (101). [15] Method according to the preceding claim, characterized by , that the wire mesh (1) is wound around at least one inner housing device (105). [16] Method according to one of the two preceding claims, characterized by , that the housing assembly (101, 105) and / or the wire mesh (1) is cut to a predetermined length after manufacture. [17] Method according to any one of the preceding claims 14 to 16, characterized by , that the wound wire mesh (1) and / or the wire mesh (1) is calendered and / or thermally treated during winding. [18] Method according to any one of the preceding claims 14 to 17, characterized by , that the regenerator device (100) is thermally treated.

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