EP2962051A1 - Holding device for heating element, and heater - Google Patents

Holding device for heating element, and heater

Info

Publication number
EP2962051A1
EP2962051A1 EP14714913.2A EP14714913A EP2962051A1 EP 2962051 A1 EP2962051 A1 EP 2962051A1 EP 14714913 A EP14714913 A EP 14714913A EP 2962051 A1 EP2962051 A1 EP 2962051A1
Authority
EP
European Patent Office
Prior art keywords
holding
holding device
heating element
holding element
heater
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
Application number
EP14714913.2A
Other languages
German (de)
French (fr)
Other versions
EP2962051B1 (en
Inventor
Bernd Kleinpass
Peter Mallaun
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.)
Plansee SE
Original Assignee
Plansee SE
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 Plansee SE filed Critical Plansee SE
Priority to PL14714913T priority Critical patent/PL2962051T3/en
Publication of EP2962051A1 publication Critical patent/EP2962051A1/en
Application granted granted Critical
Publication of EP2962051B1 publication Critical patent/EP2962051B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/02—Ohmic resistance heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/08—Heating by electric discharge, e.g. arc discharge
    • F27D11/10—Disposition of electrodes
    • 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
    • H05B3/08—Heater elements structurally combined with coupling elements or holders having electric connections specially adapted for high temperatures
    • 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
    • H05B3/62—Heating elements specially adapted for furnaces
    • H05B3/66—Supports or mountings for heaters on or in the wall or roof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D2001/0079—Means to assemble at least two parts of a furnace or of any device or accessory associated to its use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0006—Electric heating elements or system
    • F27D2099/0008—Resistor heating
    • 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
    • H05B2203/016—Heaters using particular connecting means

Definitions

  • the invention relates to a holding device for a heating element and a heater with at least one such holding device, in particular a tungsten heater.
  • CN 2896172 U discloses a heater for a high temperature furnace for sintering tungsten or molybdenum.
  • the heater is cylindrical and has a plurality of heating elements in the form of hanging nets.
  • the nets are each secured by means of a holding device in the oven.
  • the holding device is made of a folded sheet metal, which engages around the upper end of the networks in Y-shape. Between the ends of the folded sheet metal another sheet is arranged, which is riveted to the ends of the folded sheet metal.
  • a holding device for a heating element for example for use in a tungsten heater.
  • the holding device is made of a refractory metal or of a refractory metal-based alloy, so that it withstands high temperatures or remains dimensionally stable even at high temperatures. Reference is made to metals or alloys having a refractory metal or a refractory metal alloy which has a melting point greater than or equal to 1772 ° C (equivalent to the melting point of platinum).
  • the holding device has at least two holding elements, which are arranged perpendicular or substantially perpendicular to each other.
  • a heating element in the form of a network or braid can be fastened or held on a holding element, and by means of the further holding element, the holding device (with the heating element) in a furnace chamber fixable. That is, by means of the holding device, a heating element can be held or fastened in a furnace chamber.
  • the two holding elements are connected to one another, one of the two holding elements having an opening or a (through) hole, in which at least one part of the other holding element is arranged or
  • the opening (four) is angular or round, depending on the configuration of the inserted into the opening part of the holding element.
  • a simple and stable connection is provided at the location of mechanical stress (i.e., at the location of connection of the two retaining elements).
  • solid material with larger cross sections are used so that a stable holding device is provided which is simple and quick to produce.
  • a first holding element is at least partially disposed in an opening of a second holding element, wherein the first holding element is connected to the second holding element by means of deformation. That the two holding elements are at a
  • the first holding element is inserted into the opening of the second holding element, so that it protrudes on the opposite side of the second holding element.
  • the protruding part becomes e.g. Cold formed by tumbling, so that the two holding elements are securely connected together.
  • Welding process can occur at the site of the weld micro-cracks and microstructural embrittlement.
  • first and the second holding element are not welded together.
  • the holding device is current-conducting, so that it can additionally be used as a power connection for a heating element which can be fastened to the holding device.
  • at least one of the holding elements is integrally formed or made of a solid material, ie not of a metal sheet.
  • at least one retaining element is designed as a rod, square or polygonal profile.
  • the holding device can be fastened to the first holding element in an oven chamber, e.g. by means of screws or a clamping connection between the first holding element and the furnace chamber. That For example, if a heating element is attached to the holding device (or the second holding element) in a suspended manner, such as e.g. a tungsten mesh or sheet, then the entire weight of the holding device and the heating element depends on the first holding element. Alternatively, a heating element - e.g. in the form of a metal sheet - standing on the holding device, the weight of the
  • Holding device and the heating element also acts on the first holding element.
  • the holding device has a third holding element, which is fastened to the second holding element, i. when using the holding device, a heating element such as e.g. a tungsten mesh attached to the third holding element, for example, welded to the third holding element.
  • a heating element such as e.g. a tungsten mesh attached to the third holding element, for example, welded to the third holding element.
  • the first and second retaining element can be made regardless of the dimensions of the heating element used. That According to the 'modular principle' 5 can be made in a manufacturing step, a plurality of identical units consisting of the first and second holding element, which are then adapted by attaching the appropriately sized or designed third holding element to the appropriate application or to the corresponding heating element can.
  • the third holding member may be adapted to a cylindrical or rectangular oven space, i. the third holding element can
  • the second and third retaining element are connected to each other by means of at least one positive and / or non-positive connection means, for example by means of rivets or screws.
  • the second and third retaining element are not materially connected to each other, for example, not 5 welded together. That is, by a connection, for example by means of rivets, the above-described disadvantages of welding are avoided.
  • the holding device or the first, second and third
  • Holding element made of tungsten or a tungsten-based alloy formed.
  • Tungsten-based alloy is an alloy containing> 50% by weight
  • the tungsten-based alloy has a tungsten content of> 90% by weight.
  • the connection of the holding elements as described above is particularly advantageous in this embodiment because tungsten is prone to embrittlement and is therefore difficult to connect5 by conventional bonding technologies (such as welding).
  • a heater for example a tungsten heater, with at least one holding device as described above and below, wherein the at least one holding device with at least one heating element current conducting
  • Fig. 2 is an exploded view of the holding device of Fig. La-b, and
  • FIG. 3a-c are side views and a top view of the holding device of Fig. La-b. 1a-b show perspective views of a holding device 2 according to a preferred embodiment.
  • the holding device 2 is made of a first, second and third
  • Holding element 4, 6, 8 formed, which are connected to each other and from a
  • the holding device 2 is electrically conductive and is used to power one (or more) heating elements 18 which are connected to the
  • Holding device 2 (hanging) can be attached.
  • the heating element 18 shown schematically in FIG. 1 a is formed, for example, from a tungsten mesh, a metal sheet or a multiplicity of (vertically extending) wires.
  • the holding device 2 When using the holding device 2, the holding device in a furnace chamber (not shown) attached by attaching the first holding member 4 and the support, for example by means of a clamp connection or by means of screws in the furnace chamber. That After mounting, the holding device 2 or the heating element 18 is arranged hanging (on the first holding element 4) in the oven chamber. On the third holding element 8, the heating element 18, for example by means of a clamping connection and / or
  • Fig. 2 shows an exploded view of the holding device 2 of Fig. 1, to illustrate the connection of the three holding elements 4, 6, 8.
  • the holding elements 4, 6, 8 are made of solid material or are not produced by bending of sheets. The first
  • Retaining element 4 has at one end a pin 12 which is inserted into a correspondingly formed opening 10 of the second holding element 6. Subsequently, the pin 12 is formed by cold working, e.g. Tumbling, reshaped, so that the first and second retaining element 4, 6 are securely connected to each other.
  • Retaining element 8 by means of four rivets 16 a-d connected to the second retaining element 6. That is, in this embodiment of the holding device 2, a welding of the individual elements is not necessary, so that the disadvantages of welding (micro-cracking, microstructure embrittlement) can be avoided.
  • two bevels 14a-b can optionally be arranged, which are adjacent to the second holding element 6 after being plugged together. The chamfers 14a-b may receive a weld to facilitate the connection between the two
  • Holding elements 4, 6 additionally secure, wherein the location of the weld outside or substantially outside the location of the mechanical stress in the use of the holding device. That the weld or seams are sufficiently spaced from the connection (opening 10 / pin 12) between the first and second retaining elements so that the welding has no negative influence on the connection.
  • FIGS. 3a-c show side views and a top view of those described above
  • the exemplary holding device 2 is designed for use in a cylindrical oven chamber, in particular three of the illustrated holding devices 2 are required in order to heat by means of the corresponding heating elements 18, a cylindrical oven space. This is at least the third
  • Holding element 8 and the Schuelement made of a bent sheet metal, whose curvature is adapted to the dimensions of the furnace chamber.
  • a furnace chamber can have any cross-section, for example rectangular, oval, etc.
  • the third retaining element 8 can be adapted to the different dimensions of the furnace chamber or of the heating elements. That In the manufacture of the holding device, units consisting of the first and second holding element can be produced, for example, in advance. Only with the attachment of the correspondingly dimensioned third holding element, the holding device is adapted to the corresponding dimensions of a furnace chamber or a heating element, i. For example, the third holding element has a specific curvature and a certain length. Since the third holding member 8 in a simple and fast way means
  • Rivets 16a-d can be connected to the second holding element 6, can be adapted in this way after the 'modular principle' holding devices 2 quickly and easily to the particular application.
  • the holding device is made only of a first and second holding element, wherein the second holding element is formed or has corresponding dimensions, to attach a heating element 18 thereto.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Furnace Details (AREA)

Abstract

The invention relates to a holding device for a heating element and to a heater having at least one such holding device, wherein the holding device (2) is produced from a refractory metal or from an alloy on a refractory metal basis and comprises at least two holding elements (4, 6, 8) that are arranged perpendicular or substantially perpendicular to one another, and a first holding element (4) is arranged at least partially in an opening of a second holding element (6).

Description

HALTEVORRICHTUNG FÜR HEIZELEMENT UND HEIZER  HOLDING DEVICE FOR HEATER AND HEATER
Die Erfindung betrifft eine Haltevorrichtung für ein Heizelement und einen Heizer mit zumindest einer solchen Haltevorrichtung, insbesondere einen Wolfram-Heizer. The invention relates to a holding device for a heating element and a heater with at least one such holding device, in particular a tungsten heater.
CN 2896172 U offenbart einen Heizer für einen Hochtemperaturofen zum Sintern von Wolfram oder Molybdän. Der Heizer ist zylindrisch ausgebildet und weist mehrere Heizelemente in Form von hängenden Netzen auf. Die Netze sind jeweils mittels einer Haltevorrichtung im Ofen befestigt. Die Haltevorrichtung ist aus einem abgekanteten Blech hergestellt, das das obere Ende der Netze in Y-Form umgreift. Zwischen den Enden des abgekanteten Blechs ist ein weiteres Blech angeordnet, das mit den Enden des abgekanteten Blechs vernietet ist. CN 2896172 U discloses a heater for a high temperature furnace for sintering tungsten or molybdenum. The heater is cylindrical and has a plurality of heating elements in the form of hanging nets. The nets are each secured by means of a holding device in the oven. The holding device is made of a folded sheet metal, which engages around the upper end of the networks in Y-shape. Between the ends of the folded sheet metal another sheet is arranged, which is riveted to the ends of the folded sheet metal.
Es ist Aufgabe der Erfindung, eine Haltevorrichtung für ein Heizelement und einen Heizer mit einer solchen Haltevorrichtung bereitzustellen, die bzw. der kostengünstig herstellbar und stabil im Gebrauch ist. It is an object of the invention to provide a holding device for a heating element and a heater with such a holding device, which is inexpensive to produce and stable in use.
Diese Aufgabe wird mit den Merkmalen des Anspruchs 1 bzw. 11 gelöst. Vorteilhafte Ausgestaltungen sind Gegenstand der Unteransprüche. This object is achieved with the features of claim 1 and 11, respectively. Advantageous embodiments are the subject of the dependent claims.
Gemäß Anspruch 1 wird eine Haltevorrichtung für ein Heizelement bereitgestellt, beispielsweise zur Verwendung in einem Wolfram Heizer. Die Haltevorrichtung ist aus einem Refraktärmetall oder aus einer Legierung auf Refraktärmetallbasis hergestellt, so dass sie hohen Temperaturen standhält bzw. auch bei hohen Temperaturen formbeständig bleibt. Mit einem Refraktärmetall oder einer Legierung auf Refraktärmetallbasis wird auf Metalle oder Legierungen Bezug genommen, die einen Schmelzpunkt größer gleich 1772°C (entspricht dem Schmelzpunkt von Platin) aufweisen. Die Haltevorrichtung weist zumindest zwei Halteelemente auf, die senkrecht oder im Wesentlichen senkrecht zueinander angeordnet sind. Beispielsweise ist an einem Halteelement ein Heizelement in Form eines Netzes oder Geflechts befestigbar bzw. gehalten, und mittels dem weiteren Halteelement, ist die Haltevorrichtung (mit dem Heizelement) in einem Ofenraum befestigbar. D.h. mittels der Halte Vorrichtung kann ein Heizelement in einem Ofenraum gehalten bzw. befestigt werden. Die beiden Halteelemente sind miteinander verbunden, wobei eines der beiden Halteelemente eine Öffnung oder ein (durchgehendes) Loch, aufweist in dem zumindest ein Teil des anderen Halteelements angeordnet bzw. According to claim 1, a holding device for a heating element is provided, for example for use in a tungsten heater. The holding device is made of a refractory metal or of a refractory metal-based alloy, so that it withstands high temperatures or remains dimensionally stable even at high temperatures. Reference is made to metals or alloys having a refractory metal or a refractory metal alloy which has a melting point greater than or equal to 1772 ° C (equivalent to the melting point of platinum). The holding device has at least two holding elements, which are arranged perpendicular or substantially perpendicular to each other. For example, a heating element in the form of a network or braid can be fastened or held on a holding element, and by means of the further holding element, the holding device (with the heating element) in a furnace chamber fixable. That is, by means of the holding device, a heating element can be held or fastened in a furnace chamber. The two holding elements are connected to one another, one of the two holding elements having an opening or a (through) hole, in which at least one part of the other holding element is arranged or
eingesteckt ist. Beispielsweise ist die Öffnung (vier)eckig oder rund, je nach Ausgestaltung des in die Öffnung eingeschobenen Teils des Halteelements. So wird am Ort der mechanischen Beanspruchung (d.h. am Ort der Verbindung der beiden Halteelemente) eine einfache und stabile Verbindung bereitgestellt. Insbesondere kann z.B. anstelle von mechanisch weniger stabilen abgekanteten Blechen, wie oben bzgl. CN 2896172 U beschrieben, Vollmaterial mit größeren Querschnitten verwendet werden, so dass eine stabile Haltevorrichtung breitgestellt wird, die einfach und schnell herstellbar ist. is plugged in. For example, the opening (four) is angular or round, depending on the configuration of the inserted into the opening part of the holding element. Thus, a simple and stable connection is provided at the location of mechanical stress (i.e., at the location of connection of the two retaining elements). In particular, e.g. instead of mechanically less stable bent sheet metal, as described above with reference to CN 2896172 U, solid material with larger cross sections are used so that a stable holding device is provided which is simple and quick to produce.
Bevorzugt ist ein erstes Halteelement zumindest teilweise in einer Öffnung eines zweiten Halteelements angeordnet, wobei das erste Halteelement mit dem zweiten Halteelement mittels Umformung verbunden ist. D.h. die beiden Halteelemente werden bei einerPreferably, a first holding element is at least partially disposed in an opening of a second holding element, wherein the first holding element is connected to the second holding element by means of deformation. That the two holding elements are at a
Temperatur deutlich unterhalb der Rekristallisationstemperatur miteinander verbunden. In einem beispielhaften Herstellungsverfahren wird das erste Halteelement in die Öffnung des zweiten Halteelements eingesteckt, so dass es auf der gegenüberliegenden Seite des zweiten Halteelements herausragt. In einem anschließenden Schritt wird der herausragende Teil z.B. durch Taumeln kaltumgeformt, so dass die beiden Halteelemente sicher miteinander verbunden werden. Temperature well below the recrystallization temperature. In an exemplary manufacturing method, the first holding element is inserted into the opening of the second holding element, so that it protrudes on the opposite side of the second holding element. In a subsequent step, the protruding part becomes e.g. Cold formed by tumbling, so that the two holding elements are securely connected together.
Durch Schweißen bzw. durch die hohen lokalen Temperaturen während eines By welding or by the high local temperatures during a
Schweißvorgangs können am Ort der Schweißnaht Mikrorisse und Gefügeversprödungen auftreten. Um dies zu verhindern, sind besonders bevorzugt das erste und das zweite Halteelement nicht miteinander verschweißt. Welding process can occur at the site of the weld micro-cracks and microstructural embrittlement. In order to prevent this, particularly preferably the first and the second holding element are not welded together.
Gemäß einer Ausgestaltung ist die Haltevorrichtung stromleitend, so dass sie zusätzlich als Stromanschluss für ein an der Haltevorrichtung befestigbares Heizelement verwendet werden kann. Vorzugsweise ist zumindest eines der Halteelemente einteilig ausgebildet bzw. aus einem Vollmaterial hergestellt, d.h. nicht aus einem Blech. Beispielsweise ist zumindest ein Halteelement als Stab, Vierkant- oder Mehrkantprofil ausgebildet. Dadurch wird die mechanische Stabilität der einzelnen Halteelemente und damit der Haltevorrichtung erhöht. 5 Weiterhin wird die Herstellung der Halteelemente vereinfacht, da sie einfach und schnell z.B. durch Ablängen von Stangenware hergestellt werden können. Besonders bevorzugt sind beide Halteelemente aus einem Vollmaterial ausgebildet. According to one embodiment, the holding device is current-conducting, so that it can additionally be used as a power connection for a heating element which can be fastened to the holding device. Preferably, at least one of the holding elements is integrally formed or made of a solid material, ie not of a metal sheet. For example, at least one retaining element is designed as a rod, square or polygonal profile. As a result, the mechanical stability of the individual holding elements and thus of the holding device is increased. Furthermore, the production of the holding elements is simplified because they can be easily and quickly produced, for example, by cutting to length of bar products. Particularly preferably, both holding elements are formed from a solid material.
Besonders bevorzugt ist die Haltevorrichtung mit dem ersten Halteelement in einem o Ofenraum befestigbar, z.B. mittels Schrauben oder einer Klemmverbindung zwischen dem ersten Halteelement und dem Ofenraum. D.h. wenn beispielsweise an der Haltevorrichtung (bzw. am zweiten Halteelement) ein Heizelement hängend befestigt ist, wie z.B. ein Wolframnetz oder -blech, dann hängt das ganze Gewicht der Haltevorrichtung und des Heizelements am ersten Halteelement. Alternativ ist ein Heizelement - z.B. in Form eines5 Blechs - stehend auf der Haltevorrichtung angeordnet, wobei das Gewicht der Particularly preferably, the holding device can be fastened to the first holding element in an oven chamber, e.g. by means of screws or a clamping connection between the first holding element and the furnace chamber. That For example, if a heating element is attached to the holding device (or the second holding element) in a suspended manner, such as e.g. a tungsten mesh or sheet, then the entire weight of the holding device and the heating element depends on the first holding element. Alternatively, a heating element - e.g. in the form of a metal sheet - standing on the holding device, the weight of the
Haltevorrichtung und des Heizelements ebenfalls am ersten Halteelement angreift.  Holding device and the heating element also acts on the first holding element.
Gemäß einer Ausgestaltung weist die Haltevorrichtung ein drittes Halteelement auf, das am zweiten Halteelement befestigt ist, d.h. bei Verwendung der Haltevorrichtung ist ein o Heizelement wie z.B. ein Wolfram-Netz am dritten Halteelement befestigt, beispielsweise mit dem dritten Halteelement verschweißt. Durch die Verwendung eines dritten According to one embodiment, the holding device has a third holding element, which is fastened to the second holding element, i. when using the holding device, a heating element such as e.g. a tungsten mesh attached to the third holding element, for example, welded to the third holding element. By using a third
Halteelements, dessen Abmessungen an das jeweils verwendete Heizungselement angepasst ist, kann das erste und zweite Halteelement unabhängig von den Abmessungen des verwendeten Heizungselements hergestellt werden. D.h. nach dem 'Baukastenprinzip' 5 können in einem Herstellungsschritt eine Vielzahl von identischen Einheiten bestehend aus dem ersten und zweiten Halteelement hergestellt werden, die anschließend durch das Befestigen des entsprechend dimensionierten bzw. ausgestalteten dritten Halteelements an die entsprechende Anwendung bzw. an das entsprechende Heizungselement angepasst werden können. Beispielsweise kann das dritte Halteelement an einen zylindrischen oder0 eckigen Ofenraum bzw. Heizer angepasst werden, d.h. das dritte Halteelement kann  Retaining element whose dimensions are adapted to the particular heating element used, the first and second retaining element can be made regardless of the dimensions of the heating element used. That According to the 'modular principle' 5 can be made in a manufacturing step, a plurality of identical units consisting of the first and second holding element, which are then adapted by attaching the appropriately sized or designed third holding element to the appropriate application or to the corresponding heating element can. For example, the third holding member may be adapted to a cylindrical or rectangular oven space, i. the third holding element can
gebogen oder gerade ausgebildet sein oder jede andere beliebige Form aufweisen, die an die jeweilige Anwendung angepasst ist. Vorzugsweise sind das zweite und dritte Halteelement mittels zumindest einem formschlüssigen und/oder kraftschlüssigen Verbindungsmittel miteinander verbunden, beispielsweise mittels Nieten oder Schrauben. Besonders bevorzugt sind das zweite und dritte Halteelement nicht stoffschlüssig miteinander verbunden, beispielsweise nicht 5 miteinander verschweißt. D.h. durch eine Verbindung z.B. mittels Nieten werden die oben beschriebenen Nachteile des Schweißens umgangen. bent or straight or have any other shape that is adapted to the particular application. Preferably, the second and third retaining element are connected to each other by means of at least one positive and / or non-positive connection means, for example by means of rivets or screws. Particularly preferably, the second and third retaining element are not materially connected to each other, for example, not 5 welded together. That is, by a connection, for example by means of rivets, the above-described disadvantages of welding are avoided.
Besonders bevorzugt ist die Haltevorrichtung bzw. das erste, zweite und dritte Particularly preferred is the holding device or the first, second and third
Halteelement aus Wolfram oder einer Wolfram-basierten Legierung gebildet. Eine  Holding element made of tungsten or a tungsten-based alloy formed. A
o Wolfram-basierte Legierung ist eine Legierung mit einem Anteil von > 50 Gew.% Tungsten-based alloy is an alloy containing> 50% by weight
Wolfram. Vorzugsweise weist die Wolfram-basierte Legierung einen Wolfram- Anteil von > 90 Gew.% auf. Die wie oben beschriebene Verbindung der Haltelemente ist in dieser Ausgestaltung besonders vorteilhaft, da Wolfram zur Versprödung neigt und damit mittels herkömmlichen Verbindungstechnologien (wie z.B. Schweißen) nur schwer zu verbinden5 ist.  Tungsten. Preferably, the tungsten-based alloy has a tungsten content of> 90% by weight. The connection of the holding elements as described above is particularly advantageous in this embodiment because tungsten is prone to embrittlement and is therefore difficult to connect5 by conventional bonding technologies (such as welding).
Gemäß Anspruch 1 1 wird ein Heizer bereitgestellt, beispielsweise ein Wolfram-Heizer, mit zumindest einer wie oben und im folgenden beschriebenen Haltevorrichtung, wobei die zumindest eine Haltevorrichtung mit zumindest einem Heizelement stromleitend According to claim 1 1, a heater is provided, for example a tungsten heater, with at least one holding device as described above and below, wherein the at least one holding device with at least one heating element current conducting
o verbunden ist. o is connected.
Einzelne Merkmale der oben beschrieben Ausgestaltungen der Haltevorrichtung sowie des Heizers und einzelne Merkmale der im folgenden Ausführungsbeispiel beschriebenen Haltevorrichtung können auf beliebige Weise miteinander kombiniert werden.Individual features of the above-described embodiments of the holding device and the heater and individual features of the holding device described in the following embodiment can be combined with each other in any way.
5 5
Anhand der Figuren wird eine Ausführungsform der Erfindung näher erläutert.  With reference to the figures, an embodiment of the invention will be explained in more detail.
Es zeigen:  Show it:
Fig. 1 a-b Perspektivansichten einer Haltevorrichtung,1 a-b perspective views of a holding device,
0 Fig. 2 eine Explosionsansicht der Haltevorrichtung von Fig. la-b, und Fig. 2 is an exploded view of the holding device of Fig. La-b, and
Fig. 3a-c Seitenansichten und ein Draufsicht der Haltevorrichtung von Fig. la-b. Fig. la-b zeigen Perspektivansichten einer Haltevorrichtung 2 gemäß einer bevorzugten Ausgestaltung. Die Haltevorrichtung 2 wird aus einem ersten, zweiten und dritten 3a-c are side views and a top view of the holding device of Fig. La-b. 1a-b show perspective views of a holding device 2 according to a preferred embodiment. The holding device 2 is made of a first, second and third
Halteelement 4, 6, 8 gebildet, die miteinander verbunden sind und aus einemHolding element 4, 6, 8 formed, which are connected to each other and from a
efraktärmetall bzw. aus einer Legierung auf Refraktärmetallbasis hergestellt sind, z.B. Wolfram oder Molybdän. Die Haltevorrichtung 2 ist stromleitend und wird zur Stromversorgung eines (oder mehrerer) Heizelemente 18 verwendet, die an der  or made of a refractory metal-based alloy, e.g. Tungsten or molybdenum. The holding device 2 is electrically conductive and is used to power one (or more) heating elements 18 which are connected to the
Haltevorrichtung 2 (hängend) befestigt werden können. Das in Fig. la skizzenhaft dargestellte Heizelement 18 ist beispielsweise aus einem Wolfram-Netz, einem Blech oder einer Vielzahl von (vertikal verlaufenden) Drähten ausgebildet. Holding device 2 (hanging) can be attached. The heating element 18 shown schematically in FIG. 1 a is formed, for example, from a tungsten mesh, a metal sheet or a multiplicity of (vertically extending) wires.
Bei der Verwendung der Haltevorrichtung 2 ist die Haltevorrichtung in einem Ofenraum (nicht dargestellt) befestigt, durch Befestigen des ersten Halteelements 4 bzw. des Trägers beispielsweise mittels einer Klemmverbindung oder mittels Schrauben im Ofenraum. D.h. nach der Montage ist die Haltevorrichtung 2 bzw. das Heizelement 18 hängend (am ersten Halteelement 4) im Ofenraum angeordnet. Am dritten Halteelement 8 wird das Heizelement 18 beispielsweise mittels einer Klemmverbindung und/oder When using the holding device 2, the holding device in a furnace chamber (not shown) attached by attaching the first holding member 4 and the support, for example by means of a clamp connection or by means of screws in the furnace chamber. That After mounting, the holding device 2 or the heating element 18 is arranged hanging (on the first holding element 4) in the oven chamber. On the third holding element 8, the heating element 18, for example by means of a clamping connection and / or
Schweißverbindung befestigt, um einen guten elektrischen Kontakt zu gewährleisten. Welded joint attached to ensure good electrical contact.
Fig. 2 zeigt eine Explosionsansicht der Haltevorrichtung 2 von Fig. 1, um die Verbindung der drei Halteelemente 4, 6, 8 darzustellen. Die Halteelemente 4, 6, 8 sind aus Vollmaterial hergestellt bzw. sind nicht durch Abkanten von Blechen hergestellt. Das erste Fig. 2 shows an exploded view of the holding device 2 of Fig. 1, to illustrate the connection of the three holding elements 4, 6, 8. The holding elements 4, 6, 8 are made of solid material or are not produced by bending of sheets. The first
Halteelement 4 weist an einem Ende einen Zapfen 12 auf, der in eine entsprechend ausgebildete Öffnung 10 des zweiten Halteelements 6 eingesteckt wird. Anschließend wird der Zapfen 12 mittels Kaltumformung, wie z.B. Taumeln, umgeformt, so dass das erste und zweite Halteelement 4, 6 sicher miteinander verbunden sind. Retaining element 4 has at one end a pin 12 which is inserted into a correspondingly formed opening 10 of the second holding element 6. Subsequently, the pin 12 is formed by cold working, e.g. Tumbling, reshaped, so that the first and second retaining element 4, 6 are securely connected to each other.
Nach der Verbindung des ersten und zweiten Halteelements 4, 6 wird das dritte After the connection of the first and second holding element 4, 6 becomes the third
Halteelement 8 mittels vier Nieten 16a-d mit dem zweiten Halteelement 6 verbunden. D.h. in dieser Ausgestaltung der Haltevorrichtung 2 ist ein Verschweißen der einzelnen Elemente nicht notwendig, so dass die Nachteile des Schweißens (Mikrorissbildung, Gefügeversprödung) umgangen werden können. Am ersten Halteelement 4 können optional zwei Fasen 14a-b angeordnet werden, die nach dem Zusammenstecken benachbart zum zweiten Halteelement 6 liegen. Die Fasen 14a-b können eine Schweißnaht aufnehmen, um die Verbindung zwischen den beiden Retaining element 8 by means of four rivets 16 a-d connected to the second retaining element 6. That is, in this embodiment of the holding device 2, a welding of the individual elements is not necessary, so that the disadvantages of welding (micro-cracking, microstructure embrittlement) can be avoided. On the first holding element 4, two bevels 14a-b can optionally be arranged, which are adjacent to the second holding element 6 after being plugged together. The chamfers 14a-b may receive a weld to facilitate the connection between the two
Halteelementen 4, 6 zusätzlich zu sichern, wobei der Ort der Schweißnaht außerhalb oder im Wesentlichen außerhalb des Orts der mechanischen Belastung bei der Verwendung der Haltevorrichtung liegt. D.h. die Schweißnaht bzw. -nähte sind ausreichend beabstandet zur Verbindung (Öffnung 10/ Zapfen 12) zwischen erstem und zweitem Halteelement, so dass das Schweißen keinen negativen Einfluss auf die Verbindung hat. Fig. 3a-c zeigen Seitenansichten und ein Draufsicht der oben beschriebenen Holding elements 4, 6 additionally secure, wherein the location of the weld outside or substantially outside the location of the mechanical stress in the use of the holding device. That the weld or seams are sufficiently spaced from the connection (opening 10 / pin 12) between the first and second retaining elements so that the welding has no negative influence on the connection. FIGS. 3a-c show side views and a top view of those described above
Haltevorrichtung 2. Die beispielhafte Haltevorrichtung 2 ist zur Verwendung in einem zylinderförmigen Ofenraum ausgebildet, insbesondere werden drei der abgebildeten Haltevorrichtungen 2 benötigt, um damit mittels der entsprechenden Heizelemente 18 einen zylinderförmigen Ofenraum zu beheizen. Dazu ist zumindest das dritte  Holding device 2. The exemplary holding device 2 is designed for use in a cylindrical oven chamber, in particular three of the illustrated holding devices 2 are required in order to heat by means of the corresponding heating elements 18, a cylindrical oven space. This is at least the third
Halteelement 8 bzw. der Heizelementträger aus einem gebogenen Blech hergestellt, dessen Krümmung an die Abmessungen des Ofenraums angepasst ist. Holding element 8 and the Heizelementträger made of a bent sheet metal, whose curvature is adapted to the dimensions of the furnace chamber.
Ein Ofenraum kann einen beliebigen Querschnitt aufweisen, beispielsweise rechteckig, oval usw. Entsprechend kann das dritte Halteelement 8 an die verschiedenen Abmessungen des Ofenraums bzw. der Heizelemente angepasst werden. D.h. bei der Herstellung der Haltevorrichtung können zunächst Einheiten bestehend aus dem ersten und zweiten Halteelement beispielsweise auf Vorrat hergestellt werden. Erst mit der Befestigung des entsprechend dimensionierten dritten Halteelements wird die Haltevorrichtung an die entsprechende Abmessungen eines Ofenraums bzw. eines Heizelements angepasst, d.h. das dritte Halteelement weist beispielsweise eine bestimmte Krümmung und eine bestimmte Länge auf. Da das dritte Halteelement 8 auf einfache und schnelle Weise mittels A furnace chamber can have any cross-section, for example rectangular, oval, etc. Correspondingly, the third retaining element 8 can be adapted to the different dimensions of the furnace chamber or of the heating elements. That In the manufacture of the holding device, units consisting of the first and second holding element can be produced, for example, in advance. Only with the attachment of the correspondingly dimensioned third holding element, the holding device is adapted to the corresponding dimensions of a furnace chamber or a heating element, i. For example, the third holding element has a specific curvature and a certain length. Since the third holding member 8 in a simple and fast way means
Nieten 16a-d mit dem zweiten Halteelement 6 verbunden werden kann, können auf diese Weise nach dem 'Baukastenprinzip' Haltevorrichtungen 2 schnell und einfach an die jeweilige Anwendung angepasst werden. Gemäß einer alternativen, hier nicht dargestellten Ausgestaltung ist die Haltevorrichtung nur aus einem ersten und zweiten Halteelement hergestellt, wobei das zweite Halteelement ausgebildet ist bzw. entsprechende Abmessungen aufweist, ein Heizelement 18 daran zu befestigen. Rivets 16a-d can be connected to the second holding element 6, can be adapted in this way after the 'modular principle' holding devices 2 quickly and easily to the particular application. According to an alternative, not shown embodiment, the holding device is made only of a first and second holding element, wherein the second holding element is formed or has corresponding dimensions, to attach a heating element 18 thereto.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
2 Haltevorrichtung2 holding device
4 erstes Halteelement4 first holding element
6 zweites Halteelement6 second holding element
8 drittes Halteelement8 third holding element
10 Öffnung 10 opening
12 Zapfen  12 cones
14a-b Fase  14a-b chamfer
16a-d Niet  16a-d rivet
18 Heizelement  18 heating element

Claims

Patentansprüche claims
1. Haltevorrichtung (2) für ein Heizelement (18), wobei 1. holding device (2) for a heating element (18), wherein
die Haltevorrichtung (2) aus einem Refraktärmetall oder einer Legierung auf Refraktärmetallbasis hergestellt ist,  the holding device (2) is made of a refractory metal or a refractory metal-based alloy,
die Haltevorrichtung (2) zumindest zwei Halteelemente (4, 6, 8) aufweist, die senkrecht oder im Wesentlichen senkrecht zueinander angeordnet sind, und ein erstes Halteelement (4) zumindest teilweise in einer Öffnung eines zweiten Halteelements (6) angeordnet ist.  the holding device (2) has at least two holding elements (4, 6, 8) which are arranged perpendicular or substantially perpendicular to one another, and a first holding element (4) is arranged at least partially in an opening of a second holding element (6).
2. Haltevorrichtung nach Anspruch 1, wobei das erste Halteelement (4) am zweiten Halteelement (6) mittels Umformung befestigt ist, insbesondere mittels 2. Holding device according to claim 1, wherein the first holding element (4) on the second holding element (6) is fixed by means of deformation, in particular by means of
Kaltumformung .  Cold forming.
3. Haltevorrichtung nach Anspruch 1 oder 2, wobei das erste und das zweite 3. Holding device according to claim 1 or 2, wherein the first and the second
Halteelement (4, 6) nicht miteinander verschweißt sind.  Retaining element (4, 6) are not welded together.
4. Haltevorrichtung nach Anspruch 1, 2 oder 3, wobei die Halte Vorrichtung (2) 4. Holding device according to claim 1, 2 or 3, wherein the holding device (2)
stromleitend ist, insbesondere als Stromanschluss für ein an der Haltevorrichtung befestigbares Heizelement (18) ausgebildet ist.  is current-conducting, in particular as a power connection for a fastened to the holding device heating element (18) is formed.
5. Haltevorrichtung nach einem der vorhergehenden Ansprüche, wobei zumindest ein Halteelement (4, 6, 8) einteilig ausgebildet ist, insbesondere als Stab, Vierkantoder Mehrkantprofi 1. 5. Holding device according to one of the preceding claims, wherein at least one holding element (4, 6, 8) is integrally formed, in particular as a rod, square or polygonal prof. 1
6. Haltevorrichtung nach einem der vorhergehenden Ansprüche, wobei mittels des ersten Halteelements (4) die Haltevorrichtung (2) in einem Ofenraum befestigbar ist. 6. Holding device according to one of the preceding claims, wherein by means of the first holding element (4), the holding device (2) can be fastened in a furnace chamber.
7. Haltevorrichtung nach einem der vorhergehenden Ansprüche, wobei die 7. Holding device according to one of the preceding claims, wherein the
Haltevorrichtung (2) ein drittes Halteelement (8) aufweist, das am zweiten Halteelement (6) befestigt ist. Holding device (2) has a third holding element (8) which is fastened to the second holding element (6).
8. Haltevorrichtung nach einem der vorhergehenden Ansprüche, wobei das zweite und dritte Halteelement (6, 8) mittels zumindest einem formschlüssigen und/oder kraftschlüssigen Verbindungsmittel (16a-d) miteinander verbunden sind, insbesondere nicht stoffschlüssig miteinander verbunden sind. 8. Holding device according to one of the preceding claims, wherein the second and third retaining element (6, 8) by means of at least one positive and / or non-positive connection means (16a-d) are interconnected, in particular not materially connected to each other.
9. Haltevorrichtung nach einem der vorhergehenden Ansprüche, wobei am zweiten Halteelement (6) oder am dritten Halteelement (8) ein Heizelement (18) hängend befestigbar ist, insbesondere zumindest ein Geflecht, zumindest ein Blech und/oder eine Vielzahl von Drähten. 9. Holding device according to one of the preceding claims, wherein on the second holding element (6) or on the third holding element (8), a heating element (18) is fastened hanging, in particular at least one braid, at least one sheet and / or a plurality of wires.
10. Haltevorrichtung nach einem der vorhergehenden Ansprüche, wobei die 10. Holding device according to one of the preceding claims, wherein the
Haltevorrichtung aus Wolfram oder einer Wolfram-basierten Legierung gebildet ist.  Holding device made of tungsten or a tungsten-based alloy is formed.
11. Heizer mit zumindest einer Haltevorrichtung (2) nach einem der vorhergehenden Ansprüche, wobei die zumindest eine Haltevorrichtung (2) mit zumindest ein Heizelement (18) stromleitend verbunden ist. 11. Heater with at least one holding device (2) according to one of the preceding claims, wherein the at least one holding device (2) with at least one heating element (18) is electrically conductively connected.
EP14714913.2A 2013-03-01 2014-02-27 Holding device for heating element and heater Active EP2962051B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14714913T PL2962051T3 (en) 2013-03-01 2014-02-27 Holding device for heating element and heater

Applications Claiming Priority (2)

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ATGM70/2013U AT13671U1 (en) 2013-03-01 2013-03-01 Holding device for heating element and heater
PCT/AT2014/000039 WO2014131069A1 (en) 2013-03-01 2014-02-27 Holding device for heating element, and heater

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EP2962051A1 true EP2962051A1 (en) 2016-01-06
EP2962051B1 EP2962051B1 (en) 2018-01-17

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JP (1) JP2016515283A (en)
CN (1) CN105008838B (en)
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CN105008838A (en) 2015-10-28
CN105008838B (en) 2019-01-18
TW201437586A (en) 2014-10-01
AT13671U1 (en) 2014-06-15
PL2962051T3 (en) 2018-06-29
EP2962051B1 (en) 2018-01-17
US10107552B2 (en) 2018-10-23
TWI652441B (en) 2019-03-01
US20160018163A1 (en) 2016-01-21
JP2016515283A (en) 2016-05-26
WO2014131069A1 (en) 2014-09-04

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