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EP1117274B1 - Dispositif de chauffage électrique - Google Patents

Dispositif de chauffage électrique Download PDF

Info

Publication number
EP1117274B1
EP1117274B1 EP00124959A EP00124959A EP1117274B1 EP 1117274 B1 EP1117274 B1 EP 1117274B1 EP 00124959 A EP00124959 A EP 00124959A EP 00124959 A EP00124959 A EP 00124959A EP 1117274 B1 EP1117274 B1 EP 1117274B1
Authority
EP
European Patent Office
Prior art keywords
tube casing
pin
connector pin
heating element
electric heating
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.)
Expired - Lifetime
Application number
EP00124959A
Other languages
German (de)
English (en)
Other versions
EP1117274A2 (fr
EP1117274A3 (fr
Inventor
Martin Dombrowski
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.)
Hotset Heizpatronen und Zubehoer GmbH
Original Assignee
Hotset Heizpatronen und Zubehoer 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 Hotset Heizpatronen und Zubehoer GmbH filed Critical Hotset Heizpatronen und Zubehoer GmbH
Publication of EP1117274A2 publication Critical patent/EP1117274A2/fr
Publication of EP1117274A3 publication Critical patent/EP1117274A3/fr
Application granted granted Critical
Publication of EP1117274B1 publication Critical patent/EP1117274B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material

Definitions

  • the invention relates to an electric heater, in particular for injection molding, in the form of a heating element or a tubular heater, which or which has a metallic jacket tube in which the heating element is arranged embedded in electrically insulating mass, and which is plastically bendable or windable under manual application of force, wherein primarily the jacket tube is formed by a flexible corrugated hose, the heat conductor near one end of the jacket tube is connected at its ends to an electrically conductive pin or the heat conductor is connected near both ends of the jacket tube to each an electrically conductive pin, the pins respectively over part of their length in the Jacket tube, forming an unheated zone forming and protrude with the other part of its length from the jacket tube, and optionally adjacent to the jacket tube of an insulator, preferably a ceramic insulator, are radially surrounded, so that only one terminal region projects beyond the insulator.
  • an insulator preferably a ceramic insulator
  • Such a radiator is known for example from DE 44 18 828 A1.
  • the radiator must be bent or coiled in accordance with a contour to be heated.
  • the bendable design of the metallic casing tube is extremely useful and advantageous.
  • the usual electric radiators of this type have either at one end to two pins, which are connected to the inner heating conductor and which are suitable and intended for the connection of connectors or the like, or they have at both ends in each case a central pin, the is connected inside the tubular heater to the heating conductor and on the exposed ends corresponding electrical connections can be plugged or coupled in any other way.
  • the pins are usually made of stainless steel. They have a considerable length, wherein a large part of the length of the pins protrudes into the jacket tube and is connected at a distance from the mouth of the jacket tube with the electrical heating conductor. In this way, an unheated zone of the radiator is created near its mouth or near its mouths. This unheated zone may for example have a length of 30 mm. For the user is not apparent in the bending of the electric heater from the outside, in which area the junction between the rigid, inflexible pin and the heating element is located.
  • the invention is based on the object to provide an electric radiator generic type, in which the risk of breakage or weakening of the junction between the pin and the heating element is avoided and can bend or wrap much better according to desired contours.
  • the jacket tube can be filled in the usual way after introduction of the electrical conductor together with pins with MgO or the like and then reduced. Then then the ceramic plug, preferably a hard ceramic plug, be plugged onto the pin and glued into the mouth of the jacket tube. As a result, a centric mounting of the connecting pin is ensured in the casing tube, even if this is bent or wrapped as intended.
  • the heating element 2 is connected near the two ends of the jacket tube 1 with its ends to a respective electrically conductive pin 3, wherein the pin 3 is disposed over a large part of its length within the casing tube 1 and with a portion of its length from the mouth of the jacket tube 1 protrudes to apply an electrically external connection can.
  • the occupied within the casing tube 1 by the pin 3 length is an unheated zone of the radiator.
  • a ceramic insulator 4 is provided at the mouth of the jacket tube 1, so that only one terminal region of the connecting pin 3 protrudes from the insulator 4.
  • the pin 3 is made of easily bendable or wound metal, preferably nickel.

Landscapes

  • Resistance Heating (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Non-Reversible Transmitting Devices (AREA)
  • Conductive Materials (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Saccharide Compounds (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (6)

  1. Elément de chauffage électrique, en particulier pour outils de moulage par injection, sous la forme d'une cartouche de chauffage ou d'un élément de chauffage tubulaire, laquelle ou lequel présente un tube enveloppe (1) dans lequel le conducteur chauffant (2) est enrobé dans une masse électriquement isolante et qui peut être courbé ou enroulé de manière plastique par une dépense d'énergie manuelle, dans lequel principalement le tube enveloppe (1) est formé par un tuyau annelé flexible, le conducteur chauffant (2) est raccordé près d'une extrémité du tube enveloppe (1) par ses extrémités chaque fois à une broche de raccordement (3) électroconductrice ou le conducteur chauffant (2) est raccordé près des deux extrémités du tube enveloppe (1) chaque fois à une broche de raccordement (3) électroconductrice, les broches de raccordement (3) s'étendent par une partie de leur longueur dans le tube enveloppe (1) en formant une zone non chauffée et dépassent du tube enveloppe (1) par l'autre partie de leur longueur, et sont, le cas échéant, entourées radialement par un isolateur (4), de préférence un isolateur en céramique, après le tube enveloppe (1), de sorte que seule une zone de raccordement dépasse de l'isolateur (4), caractérisé par le fait que chaque broche de raccordement (3) est en métal légèrement flexible ou vrillable.
  2. Elément de chauffage électrique selon la revendication 1, caractérisé par le fait que la broche de raccordement (3) est en nickel.
  3. Elément de chauffage électrique selon la revendication 1 ou 2, caractérisé par le fait que l'isolateur (4) est un bouchon en céramique qui est collé dans l'embouchure du tube enveloppe (1) et traversé par la ou les broche(s) de raccordement (3).
  4. Elément de chauffage électrique selon l'une des revendications 1 à 3, caractérisé par le fait qu'au moins un écarteur est disposé sur la broche de raccordement (3) dans la zone entourée par le tube enveloppe (1).
  5. Elément de chauffage électrique selon la revendication 4, caractérisé par le fait que l'écarteur est formé par une perle isolante ou une pièce en céramique analogue.
  6. Elément de chauffage électrique selon l'une des revendications 1 à 5, caractérisé par le fait que dans la zone entourée par le tube enveloppe (1), la broche de raccordement (3) est entourée de masse de scellement qui remplit de préférence entièrement la fente annulaire entre broche de raccordement (3) et tube enveloppe (1).
EP00124959A 2000-01-13 2000-11-16 Dispositif de chauffage électrique Expired - Lifetime EP1117274B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20000482U DE20000482U1 (de) 2000-01-13 2000-01-13 Elektrischer Heizkörper
DE20000482U 2000-01-13

Publications (3)

Publication Number Publication Date
EP1117274A2 EP1117274A2 (fr) 2001-07-18
EP1117274A3 EP1117274A3 (fr) 2002-05-29
EP1117274B1 true EP1117274B1 (fr) 2006-06-07

Family

ID=7935817

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124959A Expired - Lifetime EP1117274B1 (fr) 2000-01-13 2000-11-16 Dispositif de chauffage électrique

Country Status (6)

Country Link
EP (1) EP1117274B1 (fr)
AT (1) ATE329477T1 (fr)
DE (2) DE20000482U1 (fr)
DK (1) DK1117274T3 (fr)
ES (1) ES2259969T3 (fr)
PT (1) PT1117274E (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7064303B2 (en) 2003-12-23 2006-06-20 Thermetic Products, Inc. Tubular heater and method of manufacture

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812580A (en) * 1970-02-06 1974-05-28 Emerson Electric Co Method of making electric heating elements
DE4418828C5 (de) * 1992-12-16 2010-05-20 Hotset Heizpatronen U. Zubehör Gmbh Elektrischer Heizkörper für Spritzgießwerkzeuge

Also Published As

Publication number Publication date
DE50012912D1 (de) 2006-07-20
ES2259969T3 (es) 2006-11-01
DE20000482U1 (de) 2000-03-16
EP1117274A2 (fr) 2001-07-18
DK1117274T3 (da) 2006-07-10
ATE329477T1 (de) 2006-06-15
PT1117274E (pt) 2006-08-31
EP1117274A3 (fr) 2002-05-29

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