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EP3573425A1 - Procédé de fabrication d'un dispositif de chauffage et dispositif de chauffage correspondant - Google Patents

Procédé de fabrication d'un dispositif de chauffage et dispositif de chauffage correspondant Download PDF

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Publication number
EP3573425A1
EP3573425A1 EP19175970.3A EP19175970A EP3573425A1 EP 3573425 A1 EP3573425 A1 EP 3573425A1 EP 19175970 A EP19175970 A EP 19175970A EP 3573425 A1 EP3573425 A1 EP 3573425A1
Authority
EP
European Patent Office
Prior art keywords
carrier
heating
heating device
tube
severed
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.)
Withdrawn
Application number
EP19175970.3A
Other languages
German (de)
English (en)
Inventor
Tobias Albert
Volker Block
Daniel Fuchs
Roland Mühlnikel
Kay Schmidt
Konrad SCHÖNEMANN
Alfred Suss
Michael Tafferner
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Publication of EP3573425A1 publication Critical patent/EP3573425A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • H05B3/46—Heating elements having the shape of rods or tubes non-flexible heating conductor mounted on insulating base
    • 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
    • H05B3/02—Details
    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • 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
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/005—Heaters using a particular layout for the resistive material or resistive elements using multiple resistive elements or resistive zones isolated from each other
    • 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
    • H05B2203/013—Heaters using resistive films or coatings
    • 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
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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
    • H05B2203/021—Heaters specially adapted for heating liquids

Definitions

  • the invention relates to a method for producing a heating device and to a heating device produced therewith.
  • a heating device which is curved in its longitudinal course, ie along the longitudinal direction.
  • the heater can get a kind of gutter shape.
  • This heater can be used in a washing machine to heat water below a drum in the so-called bottom of the washing machine. Due to the curved shape, it can be adapted to the drum curvature and thus be well installed in this special space. Furthermore, a small amount of water can be stored or retained, as it were, by the gutter shape in which the bulge points downward in the installed state, which can then be heated and vaporized, for example for steaming laundry in the washing machine.
  • the invention has for its object to provide an aforementioned method for producing a heater and a corresponding heater, which can be solved with the problems of the prior art and it is particularly possible to produce a heater advantageous with little effort and the largest possible process safety.
  • the heating device has a carrier and at least one planar heating element arranged thereon.
  • This can be applied as a thick-film heating element be, ie in a thick-film process.
  • it may be another layer heating element that has been applied, for example, by other methods known per se, such as thin-film method, thermal spraying, wire spraying, plasma method.
  • the carrier is arched along one direction, in particular curved exclusively along one direction, ie only about a single axis. This axis then preferably runs parallel to a longitudinal direction of the carrier.
  • the carrier and / or the heating device itself are machined from a tube, in particular from a cylindrical or even circular cylindrical tube.
  • a pipe wall is cut in one direction, which does not have exclusively a circumferential direction component, preferably extends at least partially along the longitudinal direction or has a longitudinal direction component.
  • the pipe is not only cut to length or cut to cut a completely circumferential piece. It is so to speak then the carrier also obliquely or at right angles to severed.
  • the carrier is advantageously not circumferential or not ring-like closed.
  • the core of the invention is the severing of a tube to produce or obtain a carrier or heater so as to obtain a longitudinally arched carrier that forms a heater.
  • a bending of an originally flat carrier in the desired curved shape for the finished heater can be avoided, which may be expensive, especially if a uniform curvature is required.
  • methods for producing a tube in particular a cylindrical tube or a circular-cylindrical tube, are known and also perform well in terms of series technology.
  • a plurality of carriers can be cut out of such a tube, or the tube can be severed into a plurality of individual carriers.
  • Heating elements can thus be made by a combination of axial and radial cuts in such a tube. Alternatively, they can be made by oblique or spiral cuts or only by axial cuts.
  • the tube is severed at least once along a direction that runs exactly parallel or at an angle up to 15 ° to a central longitudinal axis of the tube.
  • the tube can thus be severed exactly in a variant in the longitudinal direction.
  • each carrier additionally in each case exactly once along the circumferential direction can be severed.
  • a carrier or a heater thus produced is shorter than the entire tube, for example, has a very fractional part of its length. So a longer pipe can be prepared as so-called multiple benefits. From this individual carriers or individual heating devices are then separated, in which layers or components or functional units are already contained on the carrier.
  • a tube can only be cut in the direction from one end to the other end, in particular parallel to a longitudinal direction, so that the two ends of the tube each form two opposite end edges of the carrier.
  • the tube may have a circular cross section, in particular circular cylindrical.
  • a circular cross section in particular circular cylindrical.
  • Such a tube is obviously very easy to produce serially and then has a very smooth course.
  • the heating device or the carrier of the heating device has a length that is greater than the width, in particular greater than the width corresponding along a partial circumference.
  • a heating device or the corresponding carrier can be curved transversely with uniform curvature along the longitudinal direction, so that the curvature can be present about an axis parallel to the longitudinal direction of the heating device or of the carrier.
  • a pipe is severed or isolated in individual heaters or carriers that no residue remains, in particular no remainder to rounding of corners. This is the best possible material utilization possible.
  • An aforementioned heating element can preferably be provided or applied on an outer side of the curved heating device or the curved support, this being a convex outer side.
  • This convexly curved outer side can be easily produced both in a single carrier with a curved shape, in a closed tube anyway.
  • the heater is at least with many or with all components or functional units that must be applied over a large area or as a layer is prepared by appropriate application before the tube is severed as a separation.
  • these components or functional units are advantageously provided on the convex curved outside of the heater. Then just done the separation, for which the pipe is cut. Then other components or functional units can be attached or attached to the heater, the but then preferably not be applied in layered construction, but as discrete components, in particular as SMD components and / or connection units.
  • the application of the layer-shaped components or functional units to the entire tube prior to severing or separating has the advantage that this can then, so to speak, be carried out on a multiple benefit, which may be simpler or more efficient.
  • Especially printing in the thick film process is possible with pipes, so that they can also be used as multiple uses.
  • a tube is severed several times as separation into a plurality of carriers, so that then each of the individual carriers, the aforementioned components or functional units can be applied, advantageously over a large area or as a layer.
  • a deformation of the carrier which may occur when severing the tube as separation into a plurality of carriers, take place at a time when no mechanically sensitive layers or components or functional units have yet been applied.
  • connection fields as electrical power connections for the at least one heating element.
  • these connection fields or electrical power connections are provided on one side of the tube or of the carrier, on which a heating element is also provided. So a supply line is easier to realize.
  • these connection fields preferably for all heating elements of a heating device, can be applied in a central region, which, viewed in the longitudinal direction of the heating device, is located centrally or centrally. It can therefore be a geometric central area or a central area.
  • Heating elements are then provided in the longitudinal direction on both sides of this central region, wherein a distribution of the heating power of the heating elements is particularly preferably such that it is approximately the same size on both sides of these connection fields. It can thereby be achieved that in this central region with the connection fields no temperature increase due to concentration of heat output, which is good for the mechanical stability or dimensional stability of the heater and for a uniform generation of heating power. Even with a heating element with several heating circuits on it, operated independently can be, but possibly also together, the respective or all electrical connections can be provided together in such a central area.
  • the heating device may have at least two separately operable heating elements on the single carrier, wherein these two separately operable heating elements are advantageously arranged in different areas on the carrier. They or their surfaces or heating areas do not overlap or overlap and are not entangled. So they are separated from each other by heating. But they can also work together in a joint operation and heat a common large area.
  • connection portion protrudes from the carrier in the lateral direction.
  • a longitudinal outer edge of the connection section can run in the direction of an outer edge of the carrier, preferably as a continuation or in a straight line, so to speak. Such a direction may be transverse to the longitudinal direction of the carrier.
  • the connection pads can be provided on this protruding connection section. If, therefore, the heating device or the carrier has a largely quadrangular, trapezoidal or even rectangular shape, the connection section can protrude from this shape or project beyond it. Thus, the remaining surface of the carrier is available as a heating surface. Furthermore, a temperature at the connection section or at the connection fields is somewhat reduced.
  • heating conductors of a heating element extend in the longitudinal direction of the carrier or the heating device and / or at a right angle to a top line of the heating device or of the carrier.
  • a meandering course can be achieved.
  • bends and U-shaped reversals can be provided that they are made by other contact material.
  • the material of the heating element itself does not have these bends or inversions, which is better for current conduction or generation of the heating power.
  • a circular cylindrical tube 11 is shown, advantageously consisting of metal or steel. It may be made of a rectangular sheet of metal by bending together and welding together at the abutting edges.
  • This tube 11 is intended to form carriers for heating devices according to the invention, which are constructed in accordance with the invention on this tube and then separated therefrom.
  • the tube 11 has an upper edge 12a and a lower edge 12b, each forming a circle.
  • the tube 11 is also cylindrical.
  • a spraying device 13a and a printing device 13b in order to be able to apply layers or functional units to the outside of the pipe 11.
  • the spray device 13a serves for thermal spraying or plasma spraying, as is known per se to those skilled in the art.
  • the printing device 13b likewise serves for applying layers or functional units and is in particular a screen printing device.
  • the corresponding processes are known to the person skilled in the art and, even the screen printing process, are also suitable for such pipes.
  • only one of the two application method is used, whereby a combination is possible.
  • heating elements 15a in an upper half and heating elements 15b in a lower half.
  • Dashed lines 20 divides the tube once in half along its length, so that in the upper half of the heating elements 15a are formed. In the lower half, the heating elements 15b are formed.
  • the corresponding regions of the pipe wall or of the metal sheet then form the respective carrier of the respective heating element.
  • separating lines 20 is severed by means of a separating laser 22, here just after partial or complete completion of the imprints or the structure of the layers thereon.
  • an alternative heating element 15b is shown in the Fig. 2 in the lower part of the tube 11.
  • this two terminal panels 18b are provided in a central region along its length, on both sides extend meandering heat conductor 17b.
  • a better distribution of the heating power can be achieved on a finished flat heating device.
  • a heating power concentration can otherwise occur with local overheating, since the distance to the outer regions or outer edges is greatest here, and thus heat dissipation is the smallest.
  • connection pad 18b could be provided in the middle region, so that the two heating conductors 17b can be jointly guided to a single connection pad 18b with one end each. The respective other end can then be guided in each case to its own connection field 18b, so that the two heating conductors 17b can also be operated independently of one another and thus individually in addition to a common operation.
  • a heating device 24 is obtained accordingly Fig. 3 ,
  • This has a support 16 which is curved and has a rectangular shape in the flat rolled-out state. He is just a part of the wall of the tube 11 from Fig. 2 , The corners could be rounded, but this does not have to be.
  • the rectangular shape makes it possible to optimally use the tube 11 as a multiple use with the same orientation of all heating elements 15 thereon. It could also be separated out trapezoidal support or heaters, which would allow an optimal because complete use of the surface of the tube. In this case, heating elements or other functional units provided thereon would then have to be provided rotated by 180 ° in the case of adjacent carriers or heating devices.
  • the heating element 15a on the carrier 16 has near the upper edge 12a on the left and right by far two connection fields 18a and 18b. Between these extends a heating conductor 17a, here in a meandering shape, to cover the surface of the carrier 16 with only a single heating conductor.
  • Fig. 1 to 3 From the Fig. 1 to 3 is easy to see that it would be possible in principle, from the circular cylindrical tube 11 of the Fig. 1 equal by means of a separating laser 22 individual, slightly curved carrier accordingly Fig. 3rangeenburgirenen, but still without layer structure or without functional units on it. Heating conductor 17a and terminal panels 18a can then be applied afterwards.
  • at least one insulating layer or dielectric layer can be applied beforehand on the side of the separated-out carrier to which the further structure is to come. It can also be provided intermediate forms. For example, it may be provided that corresponds to a complete tube Fig. 1 an insulating layer and / or dielectric layer are applied flat.
  • They can be over the entire surface, alternatively they can be recessed in narrow areas along the later parting line 20.
  • a surface may possibly even be provided that it is applied to the entire tube, then this is severed into individual carriers, on which in turn, in particular to said applied planar layer, further functional units such as heating conductors and connections can be applied.
  • Fig. 4 From the top view of Fig. 4 is the curved profile of the heater 24 can be seen.
  • the heating element 15a is applied, ie on the convexly outwardly curved side. Basically it could be the other side or even on both sides. But it is from the Fig. 1 to 4 recognizable that on the inside in the tube 11 only with great effort a functional unit can be printed with a filigree structure. If functional units are to be provided here, it is advisable to apply them only after the separation of the tube 11 or separation of carriers.
  • Fig. 5 is a modification of a heater 124 shown with a support 116 which is largely a curved rectangle corresponding to the heater 24 of 3 and 4 , At the bottom right, however, stands to the side of a connection section 125 in the manner of a rectangular field or a broad flag.
  • connection section 125 two narrow elongated connection fields 118 are provided, which extend to the edge of the connection section 125 pointing in the direction of rotation. From these two connection fields 118, a heating conductor 117 goes off, which in turn, similar to in the Fig. 3 has a meandering shape.
  • the surface of the carrier 116 can be largely covered with a single heat conductor for a uniformly distributed surface heating power.
  • a connector not shown, can be plugged as an electrical connection.
  • connector housings with metallic contacts could be welded to these connection panels 18 or to connection fields of the heating element 15b.
  • step of cutting into individual carriers is first carried out in a tube, and only further layers or functional components are applied thereafter, a deformation of the individual carrier, which is curved on itself, can still be carried out after severing and prior to further application. After the application of layers or functional components on this, this is usually no longer possible because they would otherwise be damaged or even destroyed.

Landscapes

  • Resistance Heating (AREA)
  • Central Heating Systems (AREA)
EP19175970.3A 2018-05-25 2019-05-22 Procédé de fabrication d'un dispositif de chauffage et dispositif de chauffage correspondant Withdrawn EP3573425A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018208252.9A DE102018208252A1 (de) 2018-05-25 2018-05-25 Verfahren zur Herstellung einer Heizeinrichtung und damit hergestellte Heizeinrichtung

Publications (1)

Publication Number Publication Date
EP3573425A1 true EP3573425A1 (fr) 2019-11-27

Family

ID=66630260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19175970.3A Withdrawn EP3573425A1 (fr) 2018-05-25 2019-05-22 Procédé de fabrication d'un dispositif de chauffage et dispositif de chauffage correspondant

Country Status (4)

Country Link
US (1) US20190364619A1 (fr)
EP (1) EP3573425A1 (fr)
CN (1) CN110536494A (fr)
DE (1) DE102018208252A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021170758A1 (fr) * 2020-02-25 2021-09-02 Jt International Sa Ensemble de chauffage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0352499A2 (fr) * 1988-07-25 1990-01-31 INDUSTRIE ZANUSSI S.p.A. Dispositif de chauffage pour machine à laver et/ou à sécher le linge
US5530225A (en) * 1991-03-11 1996-06-25 Philip Morris Incorporated Interdigitated cylindrical heater for use in an electrical smoking article
EP2215301A1 (fr) 2007-11-30 2010-08-11 E.G.O. Elektro-Gerätebau GmbH Procédé pour faire fonctionner un lave-linge avec un dispositif de chauffage
DE102013207088A1 (de) * 2013-04-19 2014-10-23 Bleckmann Gmbh & Co. Kg Flächenheizeinrichtung zum Aufheizen von Wasser in einem Laugenbehälter, Waschmaschine und Verfahren zum Herstellen einer Flächenheizeinrichtung
EP3011187A1 (fr) * 2013-06-19 2016-04-27 E.G.O. ELEKTRO-GERÄTEBAU GmbH Dispositif de chauffage de pompe, et pompe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0352499A2 (fr) * 1988-07-25 1990-01-31 INDUSTRIE ZANUSSI S.p.A. Dispositif de chauffage pour machine à laver et/ou à sécher le linge
US5530225A (en) * 1991-03-11 1996-06-25 Philip Morris Incorporated Interdigitated cylindrical heater for use in an electrical smoking article
EP2215301A1 (fr) 2007-11-30 2010-08-11 E.G.O. Elektro-Gerätebau GmbH Procédé pour faire fonctionner un lave-linge avec un dispositif de chauffage
DE102013207088A1 (de) * 2013-04-19 2014-10-23 Bleckmann Gmbh & Co. Kg Flächenheizeinrichtung zum Aufheizen von Wasser in einem Laugenbehälter, Waschmaschine und Verfahren zum Herstellen einer Flächenheizeinrichtung
EP3011187A1 (fr) * 2013-06-19 2016-04-27 E.G.O. ELEKTRO-GERÄTEBAU GmbH Dispositif de chauffage de pompe, et pompe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021170758A1 (fr) * 2020-02-25 2021-09-02 Jt International Sa Ensemble de chauffage

Also Published As

Publication number Publication date
US20190364619A1 (en) 2019-11-28
CN110536494A (zh) 2019-12-03
DE102018208252A1 (de) 2019-11-28

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