EP4500096A1 - Elastokalorische vorrichtung, einspannung und entsprechendes verfahren zur herstellung einer solchen vorrichtung - Google Patents
Elastokalorische vorrichtung, einspannung und entsprechendes verfahren zur herstellung einer solchen vorrichtungInfo
- Publication number
- EP4500096A1 EP4500096A1 EP23712881.4A EP23712881A EP4500096A1 EP 4500096 A1 EP4500096 A1 EP 4500096A1 EP 23712881 A EP23712881 A EP 23712881A EP 4500096 A1 EP4500096 A1 EP 4500096A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elastocaloric
- elements
- clamping
- shell
- state
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/01—Geometry problems, e.g. for reducing size
Definitions
- the invention relates to an elastocaloric device for exchanging heat, i.e. for absorbing and releasing thermal energy, by using an elastocaloric material.
- the invention further relates to a clamping device for clamping elastocaloric material and a method for producing such an elastocaloric device.
- elastocaloric devices are installed or accommodated in an elastocaloric machine.
- Such devices use elastocaloric materials, which are also known as so-called shape memory alloys (SMA).
- SMA shape memory alloys
- pseudoelastic alloys a strong change in shape can be induced by applying heat from a heat source. If you remove the heat source, the metal returns to its original shape. This effect is absolutely reversible. This is accompanied by the reverse effect, the so-called elastocaloric effect.
- the elastocaloric material is exposed to mechanical stress, so that a crystalline phase transformation occurs and it heats up in the process.
- This resulting heat is, for example, dissipated again via a heat sink so that the material cools back to the initial temperature.
- the mechanical stress is now removed, i.e. the material is relaxed, the order is reduced and the material even cools down to a value below the initial temperature, so that it can now absorb thermal energy from the environment.
- Through cyclic loading and unloading of the elastocaloric Material can therefore be used to provide and dissipate heat in the sense of an elastocaloric heat pump.
- the introduction of mechanical forces onto the elastocaloric material is conventionally carried out via a clamping device, through which tensile forces of up to 1000 MPa can be applied.
- FIG. 1 shows an example of a clamping 100 known from the prior art in a perspective view.
- a roll 120 is wrapped with an element or wire 110 made of elastocaloric material.
- the roller 120 has clamping sections 121 at end sections, via which the roller 120 can be clamped and loaded. By introducing mechanical forces, the wire 110 can be mechanically stressed and relaxed again by canceling these mechanical forces.
- the roll 120 has a winding surface 122, which is intended to be wrapped with the wire 110 made of elastocaloric material.
- the wire 110 made of elastocaloric material is first mechanically locked at one end of the winding surface 122 and wrapped several times around the winding surface 122 of the roll 120.
- the wire 110 is then guided from the roll 120 to a counter bearing of the elastocaloric device 100, deflected, returned to the roll 120 and again wound around the winding surface 122 of the roll 120.
- the counter bearing can be formed by another roller 120, for example. This process is repeated until the winding surface 122 of the roll 120 is completely wrapped.
- the wires 110 are thus stretched, as shown, in two planes E between the roller 120 and the counter bearing.
- this type of clamping known from the prior art brings with it a number of problems.
- Loading/unloading or tensioning/relaxing the wire by introducing and canceling the mechanical forces on the roll leads to a relative movement of the wire with respect to the roll at the sections where the wire is in contact with the roll, i.e. on the winding surface .
- This causes friction between the wire and the roller and therefore leads to increased wear.
- the execution of the clamping in the form of the roller leads to the wire being stressed in the bending radius and thus being exposed to an unfavorable deformation situation. The friction and the unfavorable mechanical load thus lead to a reduction in the service life of the elastocaloric device.
- the elastocaloric device requires a defined preload for operation. If the wire is not deformed elastically as intended as a result of a load/tensioning, but rather plastically, the pre-tension within the elastocaloric device is reduced and may no longer be sufficient. Plastic deformation therefore has a negative impact on the cooling and thermal performance of the elastocaloric device.
- the production of the elastocaloric device with a clamping in the form of the roller is complex.
- the pre-tension of the wire to be applied must be maintained throughout during joining, winding and assembly until use.
- the manufacturing steps mentioned cannot be implemented in a common clamping device, which makes it even more difficult to maintain the preload.
- the cooling/heat conduction to be achieved by the elastocaloric device depends in particular on the surface of the elastocaloric wire, which comes into contact with a coolant intended for heat exchange.
- one measure to increase the cooling capacity of a device is to combine several clamps and/or several bundles in one clamp.
- FIG. 2 shows an example of a combination of clampings known from the prior art in a view from above.
- a further roller 130 with a smaller diameter is provided in addition to the previously described roller 120.
- the corresponding elastocaloric devices 100 can thus be nested within one another.
- this combination is disadvantageous in that the maximum elongation is always determined by the pair of rollers with the smaller diameter. This is due to the fact that this pair of rollers spans a smaller distance due to the nesting and can therefore experience a smaller stretching distance. With the outer pair of rollers with the larger diameter, the maximum expansion is not achieved, so that the full efficiency of this pair of rollers cannot be exploited.
- the elastocaloric device is set up or designed to assume a first state in which, based on the elastocaloric effect, an elastocaloric material releases heat energy, and to assume a second state in which, based on the elastocaloric effect, the elastocaloric material absorbs heat energy
- the elastocaloric device has: a plurality of elements formed from an elastocaloric material, and at least two opposing clampings , which clamp respective end sections of each element in such a way that only a central section of each element lying between the opposite clampings can be placed in the first state and the second state for absorbing and releasing thermal energy.
- One or more of the elastocaloric devices according to the invention are preferably installed or accommodated in an elastocaloric machine.
- each element is thus advantageously firmly clamped or clamped between sections/clamping parts of each clamping.
- the respective end sections are preferably clamped using line or surface pressure using the clamping parts.
- the elastocaloric effect describes the property of certain elastocaloric materials to respond to changes in mechanical stress exerted on the material by cooling or heating.
- the clamps are set up to bring about the first and second states of the plurality of elements by the first state by exerting force, e.g. by loading or tensioning, on the plurality of elements via the clamps and the second state by relaxing the plurality of elements while canceling the exertion of force is effected.
- two opposing clamps and the plurality of elements can form an elastocaloric cell, and several such cells can be provided in the elastocaloric device.
- a mechanical load is applied to an elastocaloric material, a crystalline phase transformation occurs, whereby the elastocaloric material heats up.
- the resulting thermal energy can be dissipated into the environment so that the material cools back to its original temperature.
- the mechanical stress acting on the elastocaloric material is subsequently removed, the crystalline phase transformation occurs in the opposite manner, with the elastocaloric material cooling down. Accordingly, in this second state, the elastocaloric material can absorb heat energy from the environment.
- elastocaloric materials are shape memory alloys such as nickel titanium, which undergoes a crystalline phase transformation from a cubic austenite structure to a metastable martensite structure when subjected to mechanical stress.
- the elements made of elastocaloric material are preferably designed as thin strips, tubes or wires so that the largest possible surface area for heat emission and heat absorption is available to a volume of the element.
- a mechanical load can preferably be caused by stretching, compression, bending, shearing or torsion, whereby the deformation of the material due to the mechanical load should take place within the elastic range of the material.
- the elastocaloric device according to the invention can be designed in such a way that the middle sections of the plurality of elements have a uniform length and/or the respective end sections of the elements are fixedly clamped in the clamps.
- end sections of the elements are clamped in a fixed/immovable manner relative to the clamping. This minimizes the friction between the clamping and the elements. Furthermore, when the elements are subjected to mechanical stress, there is no relative movement between the clamping and the end sections of the elements. This can increase the lifespan of the element.
- the elements are also advantageous to clamp the elements individually in the clamping via the respective end sections. As a result, if an element tears, only that element fails, while the elastocaloric device with other elements remains operational due to the individual clamping. Furthermore, ideally only the central sections are loaded and relieved or tensioned and relaxed in order to release or absorb thermal energy.
- the middle sections should preferably not experience any further loads, such as friction, so that the service life of the elements is increased.
- the uniform length of the middle sections preferably ensures that the mechanical load is the same for all middle sections. If the mechanical load occurs, for example, through stretching, all middle sections experience the same stretching due to the uniform length and therefore deliver the same heat output. The variance between the individual elements is thus minimized.
- the elastocaloric device according to the invention can be implemented in such a way that a respective clamping has a plurality of spheroid-shaped/ellipsoid-shaped shell elements of different sizes, which are fitted into one another in such a way that the end sections of the plurality of elements are clamped between adjacent shell elements.
- a rotation spheroidZ-ellipsoid is a three-dimensional equivalent of a circular or elliptical surface, which is created due to its rotation about one of its axes.
- Corresponding shell elements are therefore preferably created by rotating circular or oval/elliptical surfaces.
- Half-shell-shaped elements are preferably formed in this way, which can be structurally fitted into one another, for example through different dimensions.
- the elastocaloric device according to the invention can be developed in such a way that a first shell element and a second shell element adjacent thereto form end sections from a one-piece first bundle clamp several elements, and the second shell element and an adjacent third shell element clamp end sections from a one-piece second bundle of several elements that differs from the first bundle.
- a bundle preferably comprises several elements which are arranged geometrically in a predefined manner.
- the multiple elements are aligned in a circular or elliptical arrangement.
- a concentric arrangement of the bundles arises radially, for example in a circle or an ellipse, around a common longitudinal axis of the adjacent shell elements.
- a bundle is preferably clamped between nested or adjacent shell elements.
- a bundle can also be designed in one piece in such a way that it has several coherent or interconnected or one-piece elements.
- the elastocaloric device can be further developed in such a way that the first shell element, the second shell element adjacent thereto and the third shell element adjacent thereto clamp end sections of a single, one-piece bundle.
- the single one-piece bundle with its connected elements can extend over several shell elements.
- the bundles preferably differ in the dimensions of the predefined geometric arrangement, for example in diameter.
- the nestable shell elements in conjunction with the bundles are advantageous because better utilization of the installation space can be achieved.
- the first shell element is preferably designed as a hemispherical shell with a smallest radius or as an ellipsoidal shell with the smallest semi-axes, with each further shell element as a hemispherical or ellipsoidal shell with a larger radius or larger Semi-axes adjoin the next shell element with a smaller radius or smaller semi-axes.
- the shell elements can be designed as ellipsoidal half-shells.
- the hemispherical or ellipsoidal shells also have a cylindrical section in addition to a spheroidal/ellipsoidal section.
- the clamping of the several elements in the cylindrical section means that the loading of the elements can occur along their longitudinal direction and thus no loading occurs in the bending radius.
- adjacent shell elements can be braced against each other using fasteners.
- the respective clamps are designed in the form of a plate which has a plurality of clamping devices distributed in the circumferential direction for clamping end sections of respective elements.
- the plate is designed as a circular disk with a flat surface.
- the clamping devices can also be arranged in a star shape on the plate.
- a corresponding clamping device can have a recess and a corresponding clamping element that can be inserted into the recess, the clamping element being able to be inserted into the recess in such a way that the end sections of the plurality of elements are clamped between the recess and the clamping element clamped therein.
- the recess and the clamping element can be fitted into one another in a form-fitting manner.
- the recesses and the clamping elements can, for example, be implemented in the manner of a tongue-and-groove connection, with the elements being clamped between the groove and the tongue.
- a bundle preferably comprises several elements which are clamped together in the tensioning device.
- a plurality of bundles can be used via the Circumferential direction of the plate can be distributed. This makes it possible to make efficient and scalable use of installation space by allowing more elements to be accommodated in the existing installation space.
- the recess and the corresponding clamping element that can be inserted into the recess preferably each clamp end sections of elements of a bundle.
- the clamping can preferably be secured by crimping, gluing or welding.
- the clamping element preferably has a further recess into which a further corresponding clamping element which can be inserted into the further recess can be inserted, the further clamping element being able to be inserted into the further recess in such a way that the end sections of the plurality of elements are between the further recess and the further clamped therein Clamping element are clamped.
- the further recess and the corresponding further clamping element which can be inserted into the further recess preferably each clamp end sections of elements of a different bundle.
- the clamps are preferably designed as a disk, preferably as a circular disk.
- the clamping according to the invention for clamping a plurality of elements made of an elastocaloric material has: at least a first clamping part and a second clamping part, which are fitted into one another in such a way that end sections of the plurality of elements can be clamped in a fixed manner between the first clamping part and the second clamping part.
- the method according to the invention for producing an elastocaloric device according to the invention which is set up to assume a first state in which an elastocaloric material absorbs heat energy based on the elastocaloric effect, and to assume a second state in which the elastocaloric material absorbs heat energy based on the elastocaloric effect Giving off thermal energy has the following steps:
- clamps are pre-positioned in a holder. This means the entire manufacturing process can take place sequentially in the recording. Parts of the clamps are delivered one after the other and the elements of a respective bundle are applied in the immediately following sub-process. The elements are applied over the entire bundle under continuous and homogeneous pretension through a controlled element laying process (monitoring of the wire tension). This creates an assembly-friendly process that still offers high automation potential.
- Figure 1 shows a perspective view of an elastocaloric device known from the prior art.
- Figure 2 shows a view from above of a combination of two of the clamping devices known from the prior art.
- Figure 3 shows a perspective cross-sectional view of an elastocaloric device according to the invention according to a first embodiment of the invention.
- Figure 4 shows a longitudinal sectional view of the elastocaloric device according to the invention from Figure 3.
- Figures 5A to 5C show a method according to the invention for producing the elastocaloric device according to the invention according to the first embodiment of the invention.
- Figures 6A to 6C show the device according to the invention in a modification of the first embodiment.
- Figure 7 shows a perspective cross-sectional view of an elastocaloric device according to the invention according to a second embodiment of the invention with first bundles.
- Figure 8 shows a method according to the invention for producing the elastocaloric device according to the invention according to the second embodiment of the invention in a perspective exploded view.
- Figure 9 shows a perspective view of the elastocaloric device according to the invention according to the second embodiment of the invention with first bundles.
- Figures 10A and 10B show a perspective view of the elastocaloric device according to the invention according to the second embodiment with first bundles in structurally modified shapes.
- Figure 11 shows a perspective cross-sectional view of an elastocaloric device according to the invention according to a modification of the second embodiment of the invention with first and second bundles.
- Figure 12 shows a perspective view of the elastocaloric device according to the invention according to the modification of the second embodiment of the invention with first bundles and second bundles in an exploded perspective view.
- Figure 13 shows a method according to the invention for producing the elastocaloric device according to the invention according to the modification of the second embodiment of the invention with first bundles and second bundles using an exploded view.
- Figure 3 shows a perspective cross-sectional view of an elastocaloric device 200 according to the invention according to a first embodiment of the invention.
- the elastocaloric device 200 comprises a plurality of elements 210 made of an elastocaloric material. These elements 210 are clamped in two opposing clamps 220, with only one of the two clamps 220 being shown due to the cross-sectional view.
- the opposing clamps 220 and the associated elastocaloric elements 210 are preferably designed in the form of one or more elastocaloric cells.
- the elements 210 are designed as thin wires with a circular cross section.
- the elements 210 are grouped into bundles, each bundle having a plurality of elements 210 connected together. Each bundle is therefore a one-piece Bundle of several connected elements 210.
- the individual elements 210 of a bundle are arranged radially around a longitudinal axis LA of the elastocaloric device 200 at the same radius and thus form a grouping. Different bundles thus have elements 210 which are arranged at different radii around the longitudinal axis LA of the elastocaloric device 200. Within a bundle, the distance between the elements 210 and the longitudinal axis LA is therefore uniform.
- the elastocaloric device 200 comprises three concentric bundles B1-B3 of elements 210.
- FIG. 4 shows a longitudinal sectional view of the elastocaloric device 200 according to the invention from FIG.
- the first hemispherical shell element 221 has a smallest radius and each additional shell element 222-224 adjoins the next shell element with a smaller radius with a larger radius. End sections 211 of the elements 210 are firmly clamped in the clamping 220 between the adjacent surfaces of the shell elements 221-224.
- the elements 210 of the first bundle B1 are fixedly clamped between the first shell element 221 and an adjacent second shell element 222.
- the elements 210 of the second bundle B2 are fixedly clamped between the second shell element 222 and an adjacent third shell element 223.
- the elements 210 of the third bundle B3 are clamped between the third shell element 223 and an adjacent fourth shell element 224.
- the shell elements 221-224 form a common surface A on one side of the (first) clamping 220, which faces the opposite second clamping, not shown.
- the shell elements 221-224 have a concentric bore B.
- the shell elements 221 - 224 can be clamped together or against each other via this hole by means of a fastening means, not shown.
- Figures 5A to 5C show a method according to the invention for producing the elastocaloric device 200 according to the invention according to the first embodiment of the invention.
- the first shell elements 221, which have the smallest radius, are prepositioned opposite one another in a receptacle, not shown. Subsequently, the plurality of elements 210 of the first bundle B1 are applied to the first shell elements 221, so that the respective end sections 211 of the elements 210 of the first bundle B1 are in contact with the first shell elements 221 and the middle sections 212 between the two opposing first shell elements 221 exposed.
- the second shell elements 222 with the next larger radius are then fitted into one another with the first shell elements 221 with the smallest radius, so that the end sections 211 of each element 210 of the first bundle are firmly clamped between the adjacent surfaces of the first shell elements 221 and the second shell elements 222 are while the middle sections 212 continue to be exposed.
- the plurality of elements 210 of the second bundle B2 are applied to the second shell elements 222, so that the respective end sections 211 of the elements 210 of the second bundle B2 are in contact with the second shell elements 222 and the middle sections 212 between the two opposing second shell elements 222 exposed.
- Further shell elements (eg 223 in FIG. 4) and bundles (eg B3 in FIG. 4) can then be supplied or added until final shell elements (eg 224 in FIG. 4) are applied.
- Figures 6A to 6C show the device 200 according to the invention in a modification of the first embodiment, wherein the several elements 210 are formed in one piece.
- the first shell element 221 comprises cylindrical guide elements 2211 in the form of protruding short bolts, which extend radially around the Longitudinal axis LA are arranged on the adjacent surface of the first shell element 221.
- the one-piece first bundle is initially guided from a first shell element 221 to another first shell element 221.
- the first shell elements 221 are then rotated about the longitudinal axis LA, with the one-piece bundle first being guided on a first cylindrical guide element 2211 of the other first shell element 221 and being placed in a groove formed in the other first shell element 221.
- the one-piece bundle is then guided around a second guide element 2212 on the other first shell element 221 and then returned to the one first shell element 221. This process is repeated until all cylindrical guide elements 2211 are covered with the one-piece bundle.
- the first shell element 221 also includes the cylindrical guide elements 2211, which lie radially around the longitudinal axis LA on the adjacent surface of the first shell element 221 are arranged.
- the one-piece bundle is first guided from one first shell element 221 to the other first shell element 221.
- the one-piece bundle is then guided around a first cylindrical guide element 2211.
- the one-piece bundle is returned to the one shell element 221 and wrapped around second cylindrical guide element 2212 guided.
- the one-piece bundle is therefore applied to the first shell elements 221 in a meandering manner.
- An exemplary result of this process is shown in Figure 6C.
- Figure 7 shows a perspective cross-sectional view of an elastocaloric device 300 according to the invention according to a second embodiment of the invention with first bundles B11-B14.
- Figure 8 shows a method according to the invention for producing the elastocaloric device 300 according to the invention according to the second embodiment of the invention in a perspective exploded view.
- One or more of these elastocaloric devices 300 can be installed or accommodated in an elastocaloric machine.
- the elastocaloric device 300 comprises a plurality of elements 310 made of an elastocaloric material. These elements 310 are clamped in two opposing clamps 320, with only one of the two clamps 320 being shown due to the cross-sectional view.
- the opposing restraints 320 and the elastocaloric elements 310 may also be provided as one or more elastocaloric cells.
- the elements 310 are designed as thin wires with a circular cross section.
- the elements 310 are grouped or combined into the four first bundles B11-B14.
- the clamping 320 includes a first clamping part 321, which in the case shown is designed as a plate/circular disk.
- the first clamping part 321/the plate has four clamping devices distributed in the circumferential direction for clamping end sections 311 of respective elements 310 of the first bundles B11 - B14.
- the first clamping part 321/the plate comprises projections on one side which have recesses 3211 -3214, with corresponding clamping elements 3221 -3224 which can be inserted into the recesses 3211 -3214 being provided.
- the insertable clamping elements 3221 -3224 are connected to one another or in one piece via a connecting part to form a second clamping part 322 educated.
- the end sections 311 of the elements 310 are firmly clamped or clamped between adjacent surfaces of the recesses 3211-3214 and the corresponding clamping elements 3221-3224.
- first clamping part 321/the plate on which the projections with the recesses 3211-3214 are formed, and the second clamping part 322, which has the clamping elements 3221-3224, have a concentric bore. Via this hole, the corresponding clamping elements 3221-3224 and the respective recesses 3211-3214 can be clamped together or against each other with a fastening means, in the case shown with a screw S.
- the first clamping part 321 / the plate which has the recesses 3211-3214, is pre-positioned in a receptacle, not shown.
- the recesses 3211-3214 of the first plate 321 are joined over the clamping elements 3221-3224, on which the several elements 310 of the first bundles B11 -B14 are already arranged, so that the respective end sections 311 of the elements 310 of the first bundles B11- 14 are firmly clamped in contact between the recesses 3211-3214 and the clamping elements 3221-3224 and the middle sections 312 are exposed.
- Figure 9 shows a perspective view of the elastocaloric device 300 according to the invention according to the second embodiment of the invention with first bundles B11-B14.
- the clamping of the recesses 3211-3214 and the corresponding clamping elements 3221-3224 are additionally secured by gluing/welding 331 and/or by crimping 332 (connection by plastic deformation) of the respective corresponding pairings.
- Figures 10A and 10B show a perspective view of the elastocaloric device 300 according to the invention according to the second embodiment of the invention with first bundles in structurally modified shapes.
- the elastocaloric device 300 shown in Figure 10A comprises five clamping devices distributed in the circumferential direction for clamping end sections 311 of respective elements 310 of first bundles B11 '-B15'.
- the elastocaloric device 300 shown in Figure 10B comprises six clamping devices distributed in the circumferential direction for clamping end sections 311 of respective elements 310 of first bundles B11 "-B16".
- Figure 11 shows a perspective cross-sectional view of an elastocaloric device 400 according to the invention according to a modification of the second embodiment of the invention with first bundles B11-B14 and second bundles B21-B24.
- the elastocaloric device 400 comprises a plurality of elements 410 made of an elastocaloric material. These elements 410 are clamped in two opposing clamps 420, with only one of the two clamps 420 being shown due to the cross-sectional view.
- the opposing restraints 420 and the elastocaloric elements 410 may also be provided as one or more elastocaloric cells.
- the elements 410 are designed as thin wires with a circular cross section.
- elements 410 are divided into first bundles B11 -B14 and second bundles B21 -B24.
- Figure 12 shows a perspective view of the elastocaloric device 400 according to the invention according to the modification of the second embodiment of the invention with first bundles B11 -B14 and second bundles B21 -B24 in a perspective exploded view.
- the clamping 420 comprises a first clamping part 421, in the case shown a plate, which in the case shown is designed as a circular disk.
- the plate 421 forms four clamping devices distributed in the circumferential direction for clamping end sections 411 of respective elements 410 of the first bundles B11 -B14.
- the first clamping part 421 or the plate comprises projections on one side which have recesses 4211 - 4214, with corresponding clamping elements 4221 - 4224 which can be inserted into the recesses 4211 - 4214 being provided.
- the insertable clamping elements 4221 - 4224 are connected to one another via a connecting part to form a second clamping part 422.
- the end sections 411 of the elements 410 of the first bundles B11 -B14 are firmly clamped or clamped between adjacent surfaces of the recesses 4211 -4214 and the corresponding clamping elements 4221 -4224.
- clamping elements 4221 - 4224 include further recesses 4221 '-4224', with corresponding further clamping elements 4231 - 4234 which can be inserted into the further recesses 4221 '-4224' being provided.
- the further usable clamping elements 4231 - 4234 are connected to one another via a further connecting part to form a third clamping part 423.
- the end sections 411 of the elements 410 of the first bundles B11 -B14 are firmly clamped or clamped between adjacent surfaces of the further recesses 4221 '-4224' and the corresponding further clamping elements 4231 -4234.
- Middle sections 412 of the elements 410 of all first bundles B11 -B14 and all second bundles B21 -B24, which lie between the two opposing clamps 420, have a uniform length. The middle sections 412 are exposed and are therefore set up for heat exchange with the environment.
- the corresponding clamping elements 4221 -4224 and the respective recesses 4211 -4214 as well as the corresponding further clamping elements 4231 -4234 and the respective recesses 4221 '-4224' can be clamped together via this hole with a fastening means, in the case shown with a screw S.
- Figure 13 shows a method according to the invention for producing the elastocaloric device 400 according to the invention from Figure 12 according to the modification of the second embodiment of the invention using an exploded view.
- the additional clamping elements 4231 - 4234 of the third clamping part 423 are wrapped with the several elements 410 of the second bundles B21 - B24.
- the second clamping part 422 is then positioned by applying the further recesses 4221 '-4224' onto the further wrapped further clamping elements 4231-4234, so that the respective end sections 411 of the elements 410 of the second bundles B21-24 between the recesses 4221 '-4224' and the further clamping elements 4231-4234 are firmly clamped and the middle sections 412 are exposed.
- the tensioning elements 4221-4224 of the second clamping part 422 are then wrapped with the plurality of elements 410 of the first bundles B11-B14.
- the first clamping part or plate 421 is positioned by applying the recesses 4211-4214 to the wrapped clamping elements 4221-4224 so that the respective end portions 411 of the elements 410 of the first bundles B11-14 between the recesses 4211-4214 and the clamping elements 4221-4224 are firmly clamped and the middle sections 412 are exposed.
- the plate/the first clamping part 421, the second clamping part 422, which includes the clamping elements 4221-4224, and the third clamping part 423, which includes the further clamping elements 4231-4234, are clamped together by inserting the screw S into the hole.
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Abstract
Description
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Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022203210.1A DE102022203210A1 (de) | 2022-03-31 | 2022-03-31 | Elastokalorische Vorrichtung, Einspannung und entsprechendes Verfahren zur Herstellung einer solchen Vorrichtung |
| PCT/EP2023/057057 WO2023186600A1 (de) | 2022-03-31 | 2023-03-20 | Elastokalorische vorrichtung, einspannung und entsprechendes verfahren zur herstellung einer solchen vorrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4500096A1 true EP4500096A1 (de) | 2025-02-05 |
| EP4500096B1 EP4500096B1 (de) | 2026-05-06 |
Family
ID=85726999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23712881.4A Active EP4500096B1 (de) | 2022-03-31 | 2023-03-20 | Lastokalorische vorrichtung und entsprechendes verfahren zur herstellung einer solchen vorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4500096B1 (de) |
| DE (1) | DE102022203210A1 (de) |
| WO (1) | WO2023186600A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023204142A1 (de) * | 2023-05-04 | 2024-11-07 | Vitesco Technologies GmbH | Elastokalorische Maschine |
| DE102023205586A1 (de) | 2023-06-15 | 2024-12-19 | Vitesco Technologies GmbH | Elastokalorische Energiewandlereinheit |
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| US4922718A (en) * | 1989-10-10 | 1990-05-08 | Armada Corporation | Thermal energy scavenger |
| US9787131B2 (en) * | 2010-07-22 | 2017-10-10 | University Of Houston | Actuation of shape memory alloy materials using ultracapacitors |
| US10234152B2 (en) | 2013-02-06 | 2019-03-19 | Daikin Industries, Ltd. | Air conditioning device |
| DE102019113696A1 (de) | 2019-05-22 | 2020-11-26 | Universität des Saarlandes | Festkörperbasierter Energiewandler, Heiz/Kühlvorrichtung mit einem solchen Energiewandler sowie Verfahren zum Betreiben einer Heiz/Kühlvorrichtung |
| DE102020110694A1 (de) | 2020-04-20 | 2021-10-21 | Universität des Saarlandes, Körperschaft des öffentlichen Rechts | Energiewandler mit einer thermoelastischen Wandleranordnung sowie Verfahren zur Herstellung einer thermoelastischen Wandleranordnung für einen Energiewandler |
| CN112963985A (zh) * | 2021-04-07 | 2021-06-15 | 西北工业大学 | 基于形状记忆合金的制冷装置 |
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| DE102022203210A1 (de) | 2023-10-05 |
| EP4500096B1 (de) | 2026-05-06 |
| WO2023186600A1 (de) | 2023-10-05 |
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