EP2022293B1 - Von einem luftstrom und einem elektrischen strom durchquertes metallwärmeenergieabfuhrelement - Google Patents

Von einem luftstrom und einem elektrischen strom durchquertes metallwärmeenergieabfuhrelement Download PDF

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Publication number
EP2022293B1
EP2022293B1 EP07735973.5A EP07735973A EP2022293B1 EP 2022293 B1 EP2022293 B1 EP 2022293B1 EP 07735973 A EP07735973 A EP 07735973A EP 2022293 B1 EP2022293 B1 EP 2022293B1
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EP
European Patent Office
Prior art keywords
metallic element
strip
fold
fins
connector
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.)
Not-in-force
Application number
EP07735973.5A
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English (en)
French (fr)
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EP2022293A1 (de
Inventor
Christophe Aloup
Jens-Peter Arnesen
Laurent Delaforge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Priority to PL07735973T priority Critical patent/PL2022293T3/pl
Publication of EP2022293A1 publication Critical patent/EP2022293A1/de
Application granted granted Critical
Publication of EP2022293B1 publication Critical patent/EP2022293B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/022—Making the fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • F24H3/0447—Forms of the electrode terminals, e.g. tongues or clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the present invention relates to a metal element constituting part of a heating bar of an electric heater.
  • the present invention makes it possible to heat a flow of air passing through the radiator.
  • the present invention relates more particularly to a metal element of simple structure and its method of production.
  • the present invention applies in the automotive field and more particularly in the field of air conditioning systems.
  • This electric heater comprises heating bars, the latter being the elements ensuring the heating of a flow of air passing through the air conditioning device from the start of the vehicle.
  • This type of electric heater therefore increases comfort.
  • a radiator has a high cost of manufacture.
  • the heating bars constituting the electric heater are components that remain expensive because of their long assembly, the number and cost of materials used, and because of the number of elements forming a bar.
  • the document GB 2,076,270 discloses flat resistive elements, a metallization on each side of the resistive elements and a metallic element in electrical contact with each metallized face of the resistive element.
  • the brass electrodes arranged along the metal elements have been removed.
  • the metal elements serve both as heat sink and connection means electrically connecting the resistive elements to the power source.
  • Such metal elements nevertheless have a major disadvantage.
  • these metal elements create a voltage drop between the end connected to the power source and the end opposite the power source.
  • the power supply of the resistive elements is not uniform along the metal element and the resistive elements furthest from the end of the metal element connected to the power supply source operate at a lower speed. to that of the resistive elements near the end connected to the power source.
  • An example is described in the document EP 1 574 791 .
  • the present invention improves this solution by proposing a metal element traversed by an air flow, comprising an upper longitudinal wall, a lower longitudinal wall and two side walls, and a plurality of fins, at least one of the longitudinal walls is formed by a succession of dishes, said dishes being connected to each other by solidarity connection.
  • a first plate is located between two fins, the intersection between this plate and the two fins being materialized by a first fold and a second fold and a second flat is located between two fins, the intersection between this second flat and the two fins being materialized by a third fold and a fourth fold, said integral connection between two adjacent plates is between the second fold and the third fold.
  • the present invention makes it possible to obtain a uniformity of the tension between the two ends of a metal element, while limiting the cost of manufacture and the number of steps during the assembly of the heating bar, by using a metallic element whose flat longitudinal walls alone constitute electrodes conveying a homogeneous electrical current from one end to the other of the metal element.
  • the succession of integrally connected plates, forming the flat longitudinal walls makes it possible to increase the thermal diffusion of the fins, that is to say that these dishes improve the thermal contact between the PTC stones and the fins. Because the longitudinal walls are planar, the contact area between the metal member and the resistive elements is greater, which implies that the heat dissipated by the resistive elements is better distributed to the fins.
  • the integral connection is obtained by soldering.
  • At least one fin has at least one louver.
  • the metal element is made of aluminum or aluminum alloy.
  • the use of aluminum or aluminum alloy makes it possible to obtain a low cost of manufacturing the metal element.
  • the present invention also covers a heating bar traversed by an air flow comprising at least one resistive element, and at least two metal elements according to the above characteristics.
  • the metal element is fixed by gluing to the resistive element over the entire surface of a flat longitudinal wall.
  • the heating bar is connected to a power source via a connector, said connector having a plurality of teeth for fixing the latter on a portion of the longitudinal wall of said metal element.
  • the heating bar is connected to a source of electrical power via a connector, said connector being bonded to a portion of the flat longitudinal wall of said metal member.
  • the connector is made of aluminum.
  • the use of aluminum to form the connector further reduces the cost of producing a heating bar.
  • the present invention furthermore covers an electric heater for heating a flow of air circulating inside an air conditioning system comprising at least one heating bar according to the above characteristics.
  • This manufacturing method simplifies the manufacture of the metal element 2.
  • the use of this method provides a metal element having the desired dimensions ready for use for a heating bar.
  • it only takes one production line to manufacture such a metal element, which implies a reduction in the manufacturing cost.
  • the brazing is carried out by induction.
  • the deformation in step a) consists of a stamping of the strip.
  • the deformation in step a) consists of a knurling of the strip.
  • the method comprises a step a ') of flattening the strip (100) knurled so as to form flat, said step a') being performed after step a) and before step b).
  • the manufacturing method comprises a step e) in which the metal element is stretched so that the longitudinal walls are flattened.
  • This heating bar 1 is a component of an electric type radiator, not shown. Each heating bar 1 constituting the electric heater is independent so that the bars 1 are assembled in a modular manner. This heating bar 1 is used to heat a flow of air passing through said radiator, this air flow circulating more generally inside an air conditioning system. The element metal 2 being a constituent part of the heating bar 1, it is also traversed by the air flow.
  • the heating bar 1 comprises two metal elements 2 and five resistive elements 3.
  • the resistive element 3 consists of a flat CTP stone.
  • Each metal element 2 may be aluminum or aluminum alloy, such as an aluminum-silicon alloy.
  • the metal element 2 comprises a plurality of fins 5, an upper longitudinal wall 6a, a lower longitudinal wall 6b and two side walls 6c.
  • the notion of "superior” and “inferior” must be understood on the basis of the arrangement represented on the Figures 1 and 2 .
  • the four walls (6a, 6b and 6c) are flat and arranged to form a frame whose longitudinal section is rectangular.
  • the upper planar longitudinal wall 6a is parallel to the lower longitudinal plane wall 6b and the two longitudinal walls 6a, 6b are of the same size.
  • the side walls 6c are parallel to each other and of the same size.
  • the metal element 2 has a rectangular parallelepiped shape.
  • the longitudinal and lateral walls are solid, that is to say that the air flow through the electric radiator can pass through said longitudinal walls 6a, 6b and 6c side.
  • the ends of the metal member 2 are formed by the edge areas.
  • An edge zone extends from the side wall 6c to the twentieth fin part of this wall.
  • the upper metal element 2 is fixed on the five resistive elements 3 via its lower longitudinal longitudinal wall 6b at the faces of the resistive elements 3. More particularly, the metal element 2 is fixed at its wall longitudinal lower plane 6b facing the resistive elements 3 by gluing.
  • the glue 15 used is generally insulating
  • the electrical contact between the upper metal element 2 and the resistive elements 3 is at the faces of the resistive elements, the areas of the lower longitudinal wall 6b in contact with the glue not propagating the Electric power.
  • the metal element 2 is fixed to the faces of the resistive elements 3 by gluing over the entire surface of its wall longitudinal plane 6b.
  • a second lower metal element 2 is fixed in the same manner on the other faces of the resistive elements 3 so that the two metal elements 2 are arranged on either side of the resistive elements 3.
  • the attachment of this second metallic element 2 is at its upper planar longitudinal wall 6a.
  • any flat longitudinal wall can be used to fix the metal element 2 on resistive elements 3, because the metal element 2 is symmetrical with respect to a median plane P of the metal element 2.
  • the heating bar 1 comprises two connectors 4. Each connector 4 is fixed on a flat longitudinal wall at one end of the metal element 2. More particularly, each connector 4 is fixed on the flat longitudinal wall which is not in contact with the resistive element or elements 3. The two connectors 4 are located on the same side of the heating bar 1 with respect to the median plane P 'of the heating bar 1, the plane P' being identical to the plane P. These connectors 4 make it possible to connect the heating bar 1 to a power source not shown. As a result, the metal element 2 having a connector 4 is traversed by an electric current. As a result, the metal element 2 is at the same time traversed by an air flow and by an electric current.
  • the metal element 2 comprises two flat longitudinal walls 6a, 6b, two side walls 6c, a plurality of fins 5, 5 ', 5 ", 5"', lower plates 12, 14, upper plates 13, 15 lower left folds 15, 19, right lower folds 16, 20, left upper folds 17, 21, right upper folds 18, 22 and integral links 23.
  • Each fold is the junction between a fin and a dish.
  • a first upper plate 13 is located between two fins 5, 5 ', the intersection between the upper plate 13 and the two fins 5, 5' being materialized by a first upper left fold 17 and a second upper right fold 18
  • the first upper left fold 17 connects the upper plate 13 to the fin 5
  • the second upper right fold 18 connects the upper plate 13 to the fin 5 '.
  • the assembly consisting of an upper plate 13 and two fins 5 and 5 ' has a shape substantially triangular.
  • a second upper plate 15 is located between two fins 5 "and 5"', the intersection between the second plate 15 and the two fins 5 "and 5"' being materialized by a third upper left fold 21 and a fourth fold upper right 22.
  • Each fin 5, 5 ', 5 ", 5"' extends from a flat longitudinal wall to the other longitudinal plane wall so that each fin is substantially perpendicular to the two longitudinal plane walls.
  • the longitudinal walls 6a, 6b are formed by a succession of plates, said plates being connected to each other by an integral connection 23.
  • longitudinal upper plane 6a This part corresponds to the junction between two upper plates 13 and 15 by an integral connection 23.
  • the integral connection 23 connecting the upper plate 13 to the upper plate 15 is located between the second upper right fold 18 and the third upper left fold 21.
  • This integral connection 23 results from the brazing of the metal element 2.
  • This integral connection 23 is constituted of the same material constituting the metal element 2 and is more precisely the result of the fusion of the right upper folds 18 and left 21. This brazing folds between them is allowed because of the structure of the folds themselves.
  • the metal element 2 is derived from a strip 100.
  • all the parts constituting the metal element 2, namely the flat longitudinal walls 6a, 6b, the side walls 6c, the fins 5, are from a strip 100 of aluminum or aluminum alloy.
  • This strip 100 has a laminated structure composed of an aluminum core, this aluminum core being covered on each side by an outer layer of aluminum having a melting temperature lower than that of the core.
  • the outer layer of each fold melts.
  • the upper plates 13, 15 being contiguous, the right upper folds 18 and left 21 are welded together so as to form a connection between the two upper plates 13 and 15.
  • This connection is said to be integral because it results from a mixture of melt from the folds 18 and 21 and that once solidified, the bond definitively binds the two contiguous upper plates 13 and 15.
  • a flat upper longitudinal wall 6a is obtained.
  • Such a longitudinal longitudinal wall 6a thus formed makes it possible to convey an electric current from one end to the other end of said flat longitudinal wall.
  • the flat bottom longitudinal wall 6b is formed in the manner described above.
  • the connector 4 comprises a plurality of teeth 7 making it possible to fix said connector 4 on a flat longitudinal wall of said metal element 2.
  • the connector 4 consists of a sheet 8 made of brass or aluminum having a first zone 9 provided with a plurality of teeth 7 and a second zone 10 making electrical contact with a power source. Said teeth 7 are arranged in two rows 11, these two rows forming the longitudinal sides at the periphery of the first area 9.
  • the sheet 8 is folded so as to obtain a configuration for connection to a power supply source. In other words, the sheet 8 is folded so that its second zone 10 lies in a plane perpendicular to a plane containing the first zone 9.
  • Fixing the connectors 4 on a flat longitudinal wall can also be done by any other means such as gluing or by a combination of means such as gluing and the use of the teeth 7.
  • the fin 5 comprises at least one louver 13.
  • the louver 13 may have any type of shape.
  • the shutter 13 may be a part of the U-shaped cut vane 5 and bent so as to obtain an angle varying from 0 to 90 ° between the vane 5 and the Another example of embodiment of the shutter 13 is illustrated in FIG. figure 5bis and consists of a portion of the fin 5 knurled and cut so that the louver 13 is formed.
  • the metal element 2 is traversed by a flow of air. This flow of air traverses the metallic element 2 transversely, that is to say that it has a direction perpendicular to the plane of the sheet on which is represented the figure 1 .
  • the structure of the metal element 2 ensures a plurality of functions. Indeed, the metal element provides both an electrode function, an electrical conductor function and a heat sink function, the latter function for heating the air flow therethrough.
  • the electrode function is to distribute the electric current supplied by a power source from one end to the other of the length of the metal element 2.
  • This electrode function is provided by the longitudinal wall plane which is connected to the power supply via the connector 4. Thus, the electric current does not undergo a loss of voltage between the end connected to the power source and the free end of the power supply. 2.
  • the electrode function is thus filled by the alternation of plates and links 23 forming flat longitudinal wall.
  • the function of the electrical conductor consists in conveying the electric current to the resistive elements 3. This function is ensured by the fins 5. Thus, the electric current that arrives through the upper plane longitudinal wall 6a travels through the metallic element 2 via the fins 5 in order to reach the resistive elements 3.
  • the heat sink function consists in heating the flow of air passing through the metal element 2. This function is also provided by the fins 5 and consists of exchanging the heat produced by the resistive elements 3 to CTP effect. As a result, the fins 5 perform a dual function, i.e. they are heat sinks and electrical conductors.
  • the present invention also relates to a manufacturing method for obtaining the structure of the metal element 2 mentioned above.
  • a strip 100 in the form of a coil is introduced into an apparatus spraying oil on the strip 100. This oil makes it possible to protect the apparatus deforming the strip 100 in step a).
  • a strip 100 is introduced into an apparatus for deforming the latter.
  • This deformation consists in forming the fins 5 of the metal element 2.
  • the fins 5 can be obtained either by stamping the strip 100 or by knitting the strip 100.
  • the formation of the fins 5 involves the formation of the plates, ie the strip 100 is stamped so as to have a slot shape, as illustrated in FIG. figure 7 .
  • an additional step is performed consisting of flattening the knurled strip 100 so as to form the plates. This planarization can be performed at two different times during the process.
  • planarization is carried out after step a) and before step b) according to a step a ') by passing the 100 knurled strip between wheels not shown, these wheels acting on the portions of the strip 100 intended to become The dishes. These wheels make it possible to smooth the roundings intended to become the dishes.
  • the strip 100 is heated to evaporate the previously sprayed oil.
  • the oil spraying step and the evaporating step are optional steps in that they may not be present in the process. These two steps only make it possible to protect the equipment used in step a) and to increase their service life because the strip 100 may be in the form of an alloy of aluminum and silicon, the silicon being the origin of degradation of the equipment.
  • step b) consists in bringing into compression contact two folds facing each other belonging to two distinct dishes.
  • two fins 5 and 5 ' associated with the same upper plate 13 by their upper left fold 17 and right 18 respectively, have their lower right fold 16 and left 19 respectively in contact with each other.
  • the next step is to spray a stream on the strip 100.
  • This flow will strip the strip 100 during the step c) brazing.
  • the stripping of the strip 100 makes it possible to obtain a surface of the strip 100 free of impurities so that brazing is effected effectively.
  • Step c) consists of etching the aluminum and brazing the strip 100. More precisely, step c) consists in brazing between them two folds facing each other belonging to two separate plates so as to connect the two distinct dishes by the formation of the connection 23. The succession of dishes thus forms a longitudinal longitudinal wall 6a, 6b.
  • the brazing of the strip 100 is performed by induction. More specifically, the strip 100 passes through a not shown inductor generating a magnetic field. This magnetic field creates an electric current induced in the strip 100. Because of this electric current, the strip 100 heats. The flux sprayed on the strip 100 having a lower melting temperature than that of the strip 100, the change of state of the flux decape the aluminum of the strip 100 without the strip 100 melting. Then, when the temperature of the strip 100 increases, the plies vis-à-vis are welded together and thus connect together.
  • the strip 100 comprises two longitudinal walls 6a, 6b and a plurality of fins 5.
  • Step d) consists in braking then cutting the strip 100 according to the desired dimensions. Cutting to the desired dimensions is done by means of calculating the length of the strip 100 running in the production line. It is possible, for example, to use a wheel applied to one of the flat longitudinal walls, this wheel being connected to a counter indicating the length of the strip 100 traveling in step d). This measuring means is connected to a cutting means. At the end of this step, a metal element 2 is obtained with dimensions adapted to be bonded to resistive elements 3 so as to form a heating bar 1.
  • Step e) of flattening represented in Figures 9 and 9bis is described below.
  • Step e) therefore consists in stretching the metal element 2 so as to form the plates and implicitly so that the flat longitudinal walls 6a, 6b are flattened.
  • This step e) is done by means of stretching means 14.
  • These stretching means 14 are arranged at the level of the two side walls 6c of the metal element 2 and make it possible to pull the two side walls 6c along the same direction but in the opposite direction.
  • the successive plates being integrally connected by links 23, the stretch causes the deformation of the curved areas until they become flat. This step is made possible by the resistance of the links 23 to the tensile forces experienced by the metal element 2.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (16)

  1. Von einem Luftstrom durchquertes metallisches Element (2), das eine obere Längswand (6a), eine untere Längswand (6b) und zwei Seitenwände (6c) sowie mehrere Rippen (5) aufweist, wobei mindestens eine der Längswände (6a, 6b) von einer Reihe von Flachmaterialstücken gebildet wird, dadurch gekennzeichnet, dass die Flachmaterialstücke durch eine feste Verbindung (23) miteinander verbunden sind, und dadurch, dass sich ein erstes Flachmaterialstück (13) zwischen zwei Rippen (5, 5') befindet, wobei die Kreuzung zwischen diesem Flachmaterialstück (13) und den zwei Rippen (5, 5') durch einen ersten Falz (17) und einen zweiten Falz (18) gebildet wird, dadurch, dass sich ein zweites Flachmaterialstück (15) zwischen zwei Rippen (5", 5"') befindet, wobei die Kreuzung zwischen diesem zweiten Flachmaterialstück (15) und den zwei Rippen (5", 5"') durch einen dritten Falz (21) und einen vierten Falz (22) gebildet wird, und dadurch, dass sich die feste Verbindung (23) zwischen zwei benachbarten Flachmaterialstücken (13, 15) zwischen dem zweiten Falz (18) und dem dritten Falz (21) befindet.
  2. Metallisches Element (2) nach Anspruch 1, dadurch gekennzeichnet, dass die feste Verbindung (23) durch Löten hergestellt ist.
  3. Metallisches Element (2) nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass mindestens eine Rippe (5) mindestens eine Jalousie (25) aufweist.
  4. Metallisches Element (2) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass es aus Aluminium oder aus Aluminiumlegierung besteht.
  5. Von einem Luftstrom durchquerter Heizstab (1), dadurch gekennzeichnet, dass er mindestens ein Widerstandselement (3) und mindestens zwei metallische Elemente (2) nach einem der Ansprüche 1 bis 4 aufweist.
  6. Von einem Luftstrom durchquerter Heizstab (1) nach Anspruch 5, dadurch gekennzeichnet, dass das metallische Element (2) durch Kleben auf der gesamten Fläche einer ebenen Längswand (6a, 6b), die dem Widerstandselement (3) gegenüberliegt, an dem Widerstandselement (3) befestigt ist.
  7. Heizstab nach Anspruch 5 oder 6, der über einen Verbinder (4) mit einer Stromversorgungsquelle verbunden ist, dadurch gekennzeichnet, dass der Verbinder (4) eine Vielzahl von Zähnen (7) aufweist, die es ermöglichen, den Verbinder (4) an einem Abschnitt der ebenen Längswand des metallischen Elements (2) zu befestigen.
  8. Heizstab (1) nach Anspruch 5 oder 6, der über einen Verbinder (4) mit einer Stromversorgungsquelle verbunden ist, dadurch gekennzeichnet, dass der Verbinder (4) durch Kleben an einem Abschnitt der ebenen Längswand des metallischen Elements (2) befestigt ist.
  9. Heizstab (1) nach Anspruch 7 oder 8, der über einen Verbinder (4) mit einer Stromversorgungsquelle verbunden ist, dadurch gekennzeichnet, dass der Verbinder (4) aus Aluminium besteht.
  10. Elektrischer Heizkörper zum Erwärmen eines Luftstroms, der innerhalb eines Klimatisierungssystems zirkuliert, dadurch gekennzeichnet, dass er mindestens einen Heizstab (1) nach den Ansprüchen 5 bis 9 aufweist.
  11. Verfahren zur Herstellung eines metallischen Elements (2) nach einem der Ansprüche 1 bis 4, welches nacheinander die folgenden Schritte aufweist:
    - a) Umformung eines Bandmaterials (100), derart, dass Rippen (5) gebildet werden,
    - b) Zusammenpressen des Bandmaterials (100), derart, dass ein zweiter Falz (18) mit einem dritten Falz (21) in Kontakt gebracht wird,
    - c) Löten des Bandmaterials, derart, dass die Längswände (6a, 6b) gebildet werden,
    - d) Zuschneiden des metallischen Elements (2).
  12. Verfahren zur Herstellung eines metallischen Elements (2) nach Anspruch 11, dadurch gekennzeichnet, dass das Löten durch Induktionslöten durchgeführt wird.
  13. Verfahren zur Herstellung eines metallischen Elements (2) nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass die Umformung in Schritt a) aus einem Tiefziehen des Bandmaterials (100) besteht.
  14. Verfahren zur Herstellung eines metallischen Elements (2) nach Anspruch 12, dadurch gekennzeichnet, dass die Umformung in Schritt a) aus einem Prägewalzen des Bandmaterials (100) besteht.
  15. Verfahren zur Herstellung eines metallischen Elements nach Anspruch 14, dadurch gekennzeichnet, dass es einen Schritt a') aufweist, der aus einem Planieren des prägegewalzten Bandmaterials (100) besteht, derart, dass Flachmaterialstücke gebildet werden, wobei der Schritt a') nach dem Schritt a) und vor dem Schritt b) ausgeführt wird.
  16. Verfahren zur Herstellung eines metallischen Elements (2) nach Anspruch 14, dadurch gekennzeichnet, dass es außerdem einen Schritt e) aufweist, in welchem das metallische Element gestreckt wird, derart, dass die Längswände planiert werden.
EP07735973.5A 2006-05-24 2007-05-21 Von einem luftstrom und einem elektrischen strom durchquertes metallwärmeenergieabfuhrelement Not-in-force EP2022293B1 (de)

Priority Applications (1)

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PL07735973T PL2022293T3 (pl) 2006-05-24 2007-05-21 Element metalowy rozpraszający energię cieplną, przez który przepływa strumień powietrza i prąd elektryczny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0604667A FR2901658B1 (fr) 2006-05-24 2006-05-24 Element metallique dissipant une energie thermique, traverse par un flux d'air et par un courant electrique
PCT/IB2007/051916 WO2007135644A1 (fr) 2006-05-24 2007-05-21 Element metallique dissipant une énergie thermique, traversé par un flux d'air et par un courant électrique

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EP2022293A1 EP2022293A1 (de) 2009-02-11
EP2022293B1 true EP2022293B1 (de) 2013-04-24

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EP (1) EP2022293B1 (de)
CN (1) CN101496446A (de)
ES (1) ES2421597T3 (de)
FR (1) FR2901658B1 (de)
PL (1) PL2022293T3 (de)
WO (1) WO2007135644A1 (de)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP2832464A1 (de) 2013-08-02 2015-02-04 DBK David + Baader GmbH Lamellenelement, Verfahren zur Herstellung eines Lamellenelements und Werkzeug zum Herstellen des Lamellenelements
DE102015111571A1 (de) 2015-07-16 2017-01-19 Dbk David + Baader Gmbh Verfahren zum Herstellen eines Wellrippenelementes, Wellrippenelement und Heizregister

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KR20100055262A (ko) * 2008-11-17 2010-05-26 현대자동차주식회사 고용량 피티씨 히터
CN102833888A (zh) * 2011-06-13 2012-12-19 上海华族实业有限公司 适用于压紧固定在ptc电加热器管散热条
DE102012109801B4 (de) * 2012-10-15 2015-02-05 Borgwarner Ludwigsburg Gmbh Elektrische Heizvorrichtung
JP5505913B2 (ja) * 2012-10-31 2014-05-28 日高精機株式会社 扁平チューブ用フィンの製造装置
US10182470B2 (en) * 2015-08-17 2019-01-15 Betacera Inc. Ceramic heater having enlarged windward area
US11589661B2 (en) 2017-01-12 2023-02-28 Dyson Technology Limited Hand held appliance
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DE602004002556T2 (de) * 2004-03-09 2007-01-18 Cebi S.P.A., Cascine Vica Rivoli Elektrische Heizvorrichtung für Kraftfahrzeugventilationseinrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2832464A1 (de) 2013-08-02 2015-02-04 DBK David + Baader GmbH Lamellenelement, Verfahren zur Herstellung eines Lamellenelements und Werkzeug zum Herstellen des Lamellenelements
DE102013108357A1 (de) 2013-08-02 2015-02-05 Dbk David + Baader Gmbh Lamellenelement und Verfahren zur Herstellung eines Lamellenelements
DE102015111571A1 (de) 2015-07-16 2017-01-19 Dbk David + Baader Gmbh Verfahren zum Herstellen eines Wellrippenelementes, Wellrippenelement und Heizregister
EP3322942B2 (de) † 2015-07-16 2023-11-22 DBK David + Baader GmbH Verfahren zum herstellen eines wellrippenelementes, wellrippenelement und heizregister

Also Published As

Publication number Publication date
ES2421597T3 (es) 2013-09-04
CN101496446A (zh) 2009-07-29
EP2022293A1 (de) 2009-02-11
FR2901658B1 (fr) 2013-05-17
PL2022293T3 (pl) 2013-09-30
WO2007135644A1 (fr) 2007-11-29
FR2901658A1 (fr) 2007-11-30

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