EP1816901A2 - Tubular radiator with insulation mass in the end connection zone - Google Patents

Tubular radiator with insulation mass in the end connection zone Download PDF

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Publication number
EP1816901A2
EP1816901A2 EP07002319A EP07002319A EP1816901A2 EP 1816901 A2 EP1816901 A2 EP 1816901A2 EP 07002319 A EP07002319 A EP 07002319A EP 07002319 A EP07002319 A EP 07002319A EP 1816901 A2 EP1816901 A2 EP 1816901A2
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EP
European Patent Office
Prior art keywords
jacket tube
heating device
closure
bead
outside
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
EP07002319A
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German (de)
French (fr)
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EP1816901B1 (en
EP1816901A3 (en
Inventor
Andreas Pleschinger
René Hendler
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Bleckmann GmbH and Co KG
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Bleckmann GmbH and Co KG
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Priority to PL07002319T priority Critical patent/PL1816901T3/en
Publication of EP1816901A2 publication Critical patent/EP1816901A2/en
Publication of EP1816901A3 publication Critical patent/EP1816901A3/en
Application granted granted Critical
Publication of EP1816901B1 publication Critical patent/EP1816901B1/en
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Anticipated expiration legal-status Critical

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    • 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
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • 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 present invention relates to a heating device for heating a fluid, in particular in household appliances, which according to the preamble of claim 1 includes: a jacket tube, at least one arranged in the interior of the jacket tube electrical resistance heating wire, embedded in an electrically insulating, thermally conductive insulating in the jacket tube is at least one terminal assembly, which is arranged in the interior of the jacket tube and which is guided to connect the electrical resistance heating wire with a au- ⁇ er distress of the jacket tube located electrical energy source from the jacket tube to the outside, and at least one sealing bead, which the opening of the jacket tube closes.
  • the region of the terminal assembly A in particular the region of the overload protection Ü of the area of the electrical resistance heating wire W by a first disc Sl 1 is made of insulating resin.
  • an insulating compound IM is filled in the area of the electrical resistance heating wire W.
  • the largest part of the connection assembly A is enclosed by a plastic sleeve K, which electrically isolates the connection assembly A from the jacket tube M.
  • a copper sleeve KH is pushed onto the facing away from the interior of the jacket tube M front end of the connecting bolt A, which is also pushed on its other side to the thermal overload fuse Ü.
  • two further Materiaiusionn Sl 2 , Sl 3 of insulating resin and an insulating bead IP close.
  • This prior art heater has a number of disadvantages: First of all, a large number of individual parts is necessary in order to be able to arrange the connection assembly functionally reliable in the interior of the jacket tube. By this variety of parts, but also by the consequent large number of necessary handling operations for mounting this extensive number of components, the cost of the prior art heater increase significantly. In addition, there are large tolerance additions. Furthermore, the jacket tube after filling the insulating material for compression of these reduction of diameter, for example, 10 mm, to a reduced diameter, for example, 8.5 mm, must be reduced. This can be done both before the assembly of the terminal assembly and thereafter, in the latter case, the Reduzierwalzen must be lifted in time from the jacket tube in order to avoid damage to the terminal assembly, in particular the thermal overload protection.
  • the reduction process makes it necessary for the jacket tube of the heater to undergo a recrystallization anneal, otherwise there is a risk that in a bending process of the jacket tube, for example, to give it a U-shaped or W-shaped configuration, it would rupture. Furthermore, the heaters must be isolated, otherwise Moisture is absorbed by the filling compound and thus a short circuit can occur from the electrical resistance heating wire to the jacket tube.
  • the thermal overload protection can be connected directly to the terminal bolt, for example, by the fact that the wire of the overload protection is connected directly to the terminal bolt, for example by Verkerben. Since the number of parts has decreased significantly compared to the prior art heaters, the number of handling operations or assembly steps in the assembly of the heater according to the invention is significantly reduced. Overall, therefore, the solution according to the invention saves considerable costs.
  • the electrical resistance heating wire is inserted into the mandrel together with the terminal bolt or bolts.
  • the filling of the jacket tube with the insulating material is introduced into the casing tube, after which the copper sleeve is pushed together with the thermal overload protection on the connecting bolt.
  • the two other insulating discs made of synthetic resin and the insulating bead are inserted into the casing tube end and the casing tube end plastically deformed and sealed it.
  • the closure bead is provided on its outside with at least one filling slot extending over its entire axial length, it is possible to use the entire unit of electrical resistance heating wire and terminal assembly, which in turn consists of the one hand with the electrical resistance heating wire and the other thermal overload protection connected connecting pin, the thermal overload protection itself and the sealing bead is to introduce before filling the insulating in the jacket tube.
  • the at least one filling slot then the insulating can be filled in thedian Glate jacket tube.
  • the closure bead has on its outside a total of four filling slots, preferably distributed in the circumferential direction in a uniform division, the filling process can be carried out more quickly.
  • a sealing bead is used, which has no Artschlitz, so this jacket tube both tight against leakage of the insulating material from the jacket tube and tight towards an access of any other medium or fluid into the interior of the jacket tube closes.
  • a closure bead with at least one fill slot is then provided at the other end face of the jacket tube.
  • the at least one filling slot must be closed.
  • this can be achieved by providing at least one deformable closure nose on the closure bead on its side facing away from the casing tube interior.
  • This deformable closure nose can be deformed after the filling process so that they mediumsdicht the filling slot closes. This can be done, for example, that the at least one closure lug of the closure bead consists of a thermally deformable plastic, so that this closing process can be carried out with a hot stamping tool. If the closure bead has a plurality of filling slots, then such a closure nose is provided for each of these filling slots.
  • a further alternative for closing the filling slot (s) of the closure bead is to attach to the closure bead towards the outside of the jacket tube, i. in the direction of the jacket tube opening a sealing bead connects, which closes the jacket tube medium-tight.
  • the heaters In the heaters, as they are known from the prior art, takes place after filling the insulating and before mounting the overload protection rolling a process for compacting the insulating.
  • this rolling process reduces the diameter of the jacket tube, for example, from 10 mm to 8.5 mm.
  • the latter diameter is a diameter which is often found in practice in such heaters, since this Au- ⁇ diameter is provided to the inner diameters of through holes in a for holding the heater to a fluid container to be heated.
  • the jacket tube already has a diameter which can be used for corresponding flange assemblies and the like, i.e. that it is no longer necessary to reduce the diameter of the jacket tube.
  • the jacket tube is merely subjected to a pressing process. As a result, it is then no longer necessary to carry out a subsequent recrystallization annealing.
  • insulating material previously used in practice, namely magnesium oxide
  • siliconized magnesium oxide whereby isolation by synthetic resin is no longer necessary.
  • insulating a standard mass such as To use magnesium oxide and seal the heater to the outside with a thermoelastic filler bead, which closes the jacket tube medium-tight.
  • the heater may be additionally sealed to the outside with a covering resin.
  • the heating device according to the invention shown in FIGS. 2A, 2B in a partial longitudinal section has, as essential components or assemblies, a jacket tube 10, an electrical resistance heating wire 20, a connection assembly 30 and an insulating compound 40. These individual assemblies will be explained below.
  • the jacket tube 10 consists of a sufficient or good heat conducting material, such as stainless steel or aluminum, and has an at least approximately circular cross-section.
  • the two front ends 10a of the jacket tube 10 are open to the outside, it being noted that in Figs. 2A, 2B, only one of the two front ends 10a is shown.
  • the jacket tube 10 can be made into any external shape, e.g. For example, be designed as a straight tube or be bent in the shape of the letter "U” or "W".
  • the jacket tube 10 has from the beginning, i. already at the beginning of assembly of the arranged in the casing 10 components or assemblies on the outer diameter, which it has in the installed state, for example in a fluid container in a dishwasher or a laundry washing machine.
  • the electrical resistance heating wire 20 which is arranged inside the casing tube 10 at least approximately coaxially to its central longitudinal line and which is made of an electrical resistance material heated at current flow, is wound into a heating coil , At its two free ends, the electrical resistance heating wire 20 is connected to the terminal assembly 30 located there. This connection can be made for example by a weld.
  • connection module 30 initially has a likewise at least approximately coaxial with the central longitudinal line of the jacket tube 10 arranged connecting bolt 32, which may be made of a good heat and electrically conductive material, such as copper.
  • connecting bolt 32 which may be made of a good heat and electrically conductive material, such as copper.
  • this has at its facing the electrical resistance heating wire 20 end a tapered portion 32 a, so that wound to the helix electrical resistance heating wire 20 on the connecting bolt 32nd easily postponed and, as already mentioned, by means of, for example, a welding point can be specified there.
  • the conical portion 32a is followed by a circular cylindrical portion 32b of the connecting bolt 32.
  • the latter is connected to a likewise at least approximately coaxial with the central longitudinal line of the jacket tube 10 arranged thermal overload protection 34 in such a way that a lead wire 34a of the thermal overload protection 34 with the right frontal End of the connecting bolt 32 is connected by a crimping or notching process.
  • the thermal overload protection 34 may be formed for example by a fuse that interrupts the electrical connection between the electrical resistance heating wire 20 and a power source, not shown, when a predetermined temperature is exceeded.
  • a connecting piece of wire 36 is connected to the thermal overload protection 34, for example by a crimping or notching process.
  • This connection piece of wire 36 is led out of the jacket tube 10 to the outside and serves to connect the heating device according to the invention with the already mentioned, not shown electrical energy source.
  • a closure bead 38 is provided, which is shown in detail in Figs. 3 and 4 in more detail.
  • the closure bead 38 is made of a thermoformable plastic.
  • the closure bead 38 has four fill slots 38a distributed in the circumferential direction of the closure bead 38 in a uniform pitch. These filling slots 38a extend over the entire axial length of the sealing bead 38. Webs 38b are provided between the individual filling slots 38a, whose outer diameter corresponds at least approximately to the inner diameter of the jacket tube 10.
  • lugs 38c are provided on the webs, which close the filling slots 38a by a thermal deformation process after a filling with an insulating material 40, as will be explained in more detail below.
  • the closure bead 38 projects beyond the right-hand end 10 a of the jacket tube 10. In its axial position it is fixed by means of two notches on the connecting piece of wire 36.
  • the area of the second terminal end of the heating device according to the invention on the side not shown as well may be constructed as explained above.
  • another closure bead is used, for example one which has no filling slots and whose outside diameter substantially corresponds to the inside diameter of the jacket tube 10. This closure bead can then be fixed, for example, by an adhesive process in the local end of the jacket tube 10.
  • siliconized insulating compound 40 serves to electrically insulate the electrical resistance heating wire 20 and the other electrical components of the terminal assembly 30, i. of the connecting bolt 32, the thermal overload protection 34 and the connecting wire piece 36 with respect to the inner wall of the jacket tube 10.
  • the siliconized insulating compound has the heat generated by the electrical resistance heating wire 20 to conduct to the jacket tube 10.
  • the locking lugs 38b of the closure bead 38 by a thermal deformation process in the Deformed manner that the filling slots 38a are sealed medium-tight.

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  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Pipe Accessories (AREA)

Abstract

Device has an electrical resistance-heating wire (20) arranged in an inner side of a casing tube (10) and embedded into an electrical-insulating, heat-conducting insulation mass (40) in the tube. A connection component (30) is provided for connection of the heating wire with an electrical energy source arranged at an outer side of the tube. A closing pellet (38) is provided with a filling slot at its outer side for filling of the insulation mass in the inner side of the tube, where the slot extends over the entire axial length of the pellet.

Description

Die vorliegende Erfindung betrifft eine Heizvorrichtung zum Erhitzen eines Fluids, insbesondere bei Haushaltsgeräten, die gemäß dem Oberbegriff des Patentanspruches 1 enthält: ein Mantelrohr, wenigstens einen im Inneren des Mantelrohres angeordneten elektrischen Widerstands-Heizdraht, der in einer elektrisch isolierenden, wärmeleitenden Isoliermasse im Mantelrohr eingebettet ist, mindestens eine Anschlussbaugruppe, die im Inneren des Mantelrohres angeordnet ist und die zur Verbindung des elektrischen Widerstands-Heizdrahts mit einer au-βerhalb des Mantelrohres befindlichen elektrischen Energiequelle aus dem Mantelrohr nach außen geführt ist, und wenigstens eine Verschlussperle, welche die Öffnung des Mantelrohres verschließt.The present invention relates to a heating device for heating a fluid, in particular in household appliances, which according to the preamble of claim 1 includes: a jacket tube, at least one arranged in the interior of the jacket tube electrical resistance heating wire, embedded in an electrically insulating, thermally conductive insulating in the jacket tube is at least one terminal assembly, which is arranged in the interior of the jacket tube and which is guided to connect the electrical resistance heating wire with a au-βerhalb of the jacket tube located electrical energy source from the jacket tube to the outside, and at least one sealing bead, which the opening of the jacket tube closes.

Aus der europäischen Patentanmeldung 0 086 465 geht eine Heizvorrichtung in Form eines Rohrheizkörpers hervor, die den eingangs erwähnten Aufbau aufweist. Bei dieser vorbekannten Heizvorrichtung ist die Anschlussbaugruppe an ihrem einen Ende über einen Anschlussbolzen mit dem elektrischen Widerstands-Heizdraht verbunden. Das andere Ende der Anschlussbaugruppe steht aus dem Mantelrohr des vorbekannten Rohrheizkörpers hervor und dient zur Verbindung des Rohrheizkörpers mit einer elektrischen Energiequelle. In Fig. 1 ist eine derartige vorbekannte Heizvorrichtung gezeigt.From the European Patent Application 0 086 465 goes out a heater in the form of a tubular heater, having the structure mentioned above. In this prior art heater, the terminal assembly is connected at its one end via a connecting bolt with the electrical resistance heating wire. The other end of the connection assembly protrudes from the jacket tube of the prior art tubular heater and is used to connect the tubular heater with an electrical energy source. In Fig. 1, such a prior art heater is shown.

Wie aus Fig. 1 hervorgeht, ist der Bereich der Anschlussbaugruppe A, insbesondere der Bereich der Überlastsicherung Ü von dem Bereich des elektrischen Widerstands-Heizdrahtes W durch eine erste Scheibe Sl1 aus Isolierharz getrennt. In dem Bereich des elektrischen Widerstands-Heizdrahtes W ist eine Isoliermasse IM eingefüllt. Demgegenüber ist der größte Teil der Anschlussbaugruppe A von einer Kunststoffhülse K umschlossen, welche die Anschlussbaugruppe A elektrisch gegenüber dem Mantelrohr M isoliert. Zur Verbindung des Anschlussbolzens AB mit der Überlastsicherung Ü ist auf das von dem Innern des Mantelrohres M wegweisenden Stirnende des Anschlussbolzens A eine Kupferhülse KH aufgeschoben, die an ihrer anderen Seite ebenfalls auf die thermische Überlastsicherung Ü aufgeschoben ist. In Richtung des stirnseitigen Endes des Mantelrohres M schließen sich zwei weitere Materiaischeiben Sl2, Sl3 aus Isolierharz sowie eine Isolierperle IP an.As is apparent from Fig. 1, the region of the terminal assembly A, in particular the region of the overload protection Ü of the area of the electrical resistance heating wire W by a first disc Sl 1 is made of insulating resin. In the area of the electrical resistance heating wire W, an insulating compound IM is filled. In contrast, the largest part of the connection assembly A is enclosed by a plastic sleeve K, which electrically isolates the connection assembly A from the jacket tube M. To connect the connecting bolt AB with the overload protection Ü a copper sleeve KH is pushed onto the facing away from the interior of the jacket tube M front end of the connecting bolt A, which is also pushed on its other side to the thermal overload fuse Ü. In the direction of the front end of the jacket tube M, two further Materiaischeiben Sl 2 , Sl 3 of insulating resin and an insulating bead IP close.

Diese vorbekannte Heizvorrichtung weist eine Reihe von Nachteilen auf: So ist zunächst eine Vielzahl von Einzelteilen notwendig, um die Anschlussbaugruppe funktionssicher in dem Inneren des Mantelrohres anordnen zu können. Durch diese Teilevielfalt, aber auch durch die hierdurch bedingte große Zahl an notwendigen Handhabungsvorgängen zur Montage dieser umfangreichen Zahl an Bauteilen erhöhen sich die Kosten für die vorbekannte Heizvorrichtung erheblich. Darüber hinaus ergeben sich große Toleranzadditionen. Weiterhin muss das Mantelrohr nach dem Einfüllen der Isoliermasse zur Verdichtung dieser über Reduzierwalzen von einem Durchmesser, beispielsweise 10 mm, auf einen verringerten Durchmesser, beispielsweise 8,5 mm, verkleinert werden. Dies kann sowohl vor der Montage der Anschlussbaugruppe als auch danach erfolgen, wobei im letzteren Fall die Reduzierwalzen rechtzeitig von dem Mantelrohr abgehoben werden müssen, um eine Beschädigung der Anschlussbaugruppe, insbesondere der thermischen Überlastsicherung zu vermeiden. Der Reduziervorgang macht es notwendig, dass das Mantelrohr der Heizvorrichtung einem Rekristallisationsglühvorgang unterzogen werden muss, da andernfalls die Gefahr besteht, dass bei einem Biegeprozess des Mantelrohres, um dieses beispielsweise eine U-förmige oder W-förmige Gestalt zu verleihen, dieses reißen würde. Des Weiteren müssen die Heizvorrichtungen isoliert werden, da ansonsten von der Füllmasse Feuchtigkeit aufgenommen wird und somit ein Kurzschluss von dem elektrischen Widerstands-Heizdraht zum Mantelrohr entstehen kann.This prior art heater has a number of disadvantages: First of all, a large number of individual parts is necessary in order to be able to arrange the connection assembly functionally reliable in the interior of the jacket tube. By this variety of parts, but also by the consequent large number of necessary handling operations for mounting this extensive number of components, the cost of the prior art heater increase significantly. In addition, there are large tolerance additions. Furthermore, the jacket tube after filling the insulating material for compression of these reduction of diameter, for example, 10 mm, to a reduced diameter, for example, 8.5 mm, must be reduced. This can be done both before the assembly of the terminal assembly and thereafter, in the latter case, the Reduzierwalzen must be lifted in time from the jacket tube in order to avoid damage to the terminal assembly, in particular the thermal overload protection. The reduction process makes it necessary for the jacket tube of the heater to undergo a recrystallization anneal, otherwise there is a risk that in a bending process of the jacket tube, for example, to give it a U-shaped or W-shaped configuration, it would rupture. Furthermore, the heaters must be isolated, otherwise Moisture is absorbed by the filling compound and thus a short circuit can occur from the electrical resistance heating wire to the jacket tube.

Es ist eine Aufgabe der vorliegenden Erfindung, die Kosten bei der Herstellung einer Heizvorrichtung der eingangs genannten Art zu reduzieren.It is an object of the present invention to reduce the cost of manufacturing a heater of the type mentioned.

Die vorstehende Aufgabe wird durch die Merkmale des Patentanspruchs 1 gelöst. In den sich daran anschließenden Ansprüchen 2 bis 12 finden sich vorteilhafte Ausgestaltungen hierzu.The above object is solved by the features of claim 1. In the subsequent claims 2 to 12 are advantageous embodiments of this.

Durch den Austausch der Kunststoffhülse, wie sie im Stand der Technik für die elektrische Isolierung der Anschlussbaugruppe gegenüber dem Mantelrohr verwendet wird, gegen die Isoliermasse wird ermöglicht, dass sich die Zahl der Teile, die für die Montage der Anschlussbaugruppe notwendig sind, verringert werden kann. Denn neben der nicht mehr vorhandenen Kunststoffhülse werden auch nicht mehr die Trenn- bzw. Isolierscheiben aus Kunstharz benötigt, die beidseits des Bereichs, in dem sich die thermische Überlastsicherung befindet, bei der bekannten Heizvorrichtung angeordnet sind. Des Weiteren ist auch nicht mehr die Kupferhülse notwendig, welche die Wärmeleitung von dem Anschlussbolzen zu der thermischen Überlastsicherung bei der vorbekannten Heizvorrichtung bereitgestellt hat. Vielmehr kann die thermische Überlastsicherung unmittelbar mit dem Anschlussbolzen verbunden werden, beispielsweise dadurch, dass der Draht der Überlastsicherung direkt mit dem Anschlussbolzen, zum Beispiel durch Verkerben verbunden wird. Da die Zahl der Teile sich deutlich gegenüber den vorbekannten Heizvorrichtungen verringert hat, wird die Zahl der Handhabungsvorgänge bzw. der Montageschritte bei dem Zusammenbau der erfindungsgemäßen Heizvorrichtung erheblich reduziert. Insgesamt werden also durch die erfindungsgemäße Lösung erhebliche Kosten eingespart.By replacing the plastic sleeve, as used in the prior art for the electrical insulation of the terminal assembly relative to the jacket tube against the insulating material is made possible that the number of parts that are necessary for the assembly of the terminal assembly, can be reduced. Because in addition to the no longer existing plastic sleeve and the separation or insulating discs made of synthetic resin are no longer needed, which are arranged on both sides of the area in which the thermal overload protection, in the known heating device. Furthermore, the copper sleeve is no longer necessary, which has provided the heat conduction from the terminal bolt to the thermal overload protection in the prior art heater. Rather, the thermal overload protection can be connected directly to the terminal bolt, for example, by the fact that the wire of the overload protection is connected directly to the terminal bolt, for example by Verkerben. Since the number of parts has decreased significantly compared to the prior art heaters, the number of handling operations or assembly steps in the assembly of the heater according to the invention is significantly reduced. Overall, therefore, the solution according to the invention saves considerable costs.

Bei der vorstehend beschriebenen vorbekannten Heizvorrichtung wird während der Montage der Heizvorrichtung der elektrische Widerstands-Heizdraht zusammen mit dem oder den Anschlussbolzen in das Mantelrohr eingeführt.In the above-described prior art heater, during the mounting of the heater, the electrical resistance heating wire is inserted into the mandrel together with the terminal bolt or bolts.

Anschließend erfolgt die Füllung des Mantelrohres mit der Isoliermasse. Daraufhin wird die erste Isolierscheibe aus Kunstharz in das Mantelrohr eingebracht, woraufhin die Kupferhülse zusammen mit der thermischen Überlastsicherung auf den Anschlussbolzen aufgeschoben wird. Anschließend werden die beiden weiteren Isolierscheiben aus Kunstharz sowie die Isolierperle in das Mantelrohrende eingesetzt sowie das Mantelrohrende plastisch verformt und damit verschlossen. Wird jedoch die Verschlussperle an ihrer Außenseite mit wenigstens einem sich über ihre gesamte axiale Länge erstreckenden Füllschlitz versehen, besteht die Möglichkeit, die gesamte Einheit aus elektrischem Widerstands-Heizdraht und Anschlussbaugruppe, die wiederum aus dem einerseits mit dem elektrischen Widerstands-Heizdraht und andererseits mit der thermischen Überlastsicherung verbundenen Anschlussbolzen, der thermischen Überlastsicherung selbst und der Verschlussperle besteht, vor dem Einfüllen der Isoliermasse in das Mantelrohr einzubringen. Über den wenigstens einen Füllschlitz kann dann die Isoliermasse in das so vorbestückte Mantelrohr eingefüllt werden.Subsequently, the filling of the jacket tube with the insulating material. Then, the first insulating resin is introduced into the casing tube, after which the copper sleeve is pushed together with the thermal overload protection on the connecting bolt. Subsequently, the two other insulating discs made of synthetic resin and the insulating bead are inserted into the casing tube end and the casing tube end plastically deformed and sealed it. However, if the closure bead is provided on its outside with at least one filling slot extending over its entire axial length, it is possible to use the entire unit of electrical resistance heating wire and terminal assembly, which in turn consists of the one hand with the electrical resistance heating wire and the other thermal overload protection connected connecting pin, the thermal overload protection itself and the sealing bead is to introduce before filling the insulating in the jacket tube. About the at least one filling slot then the insulating can be filled in the vorbestückte jacket tube.

Weist die Verschlussperle an ihrer Außenseite insgesamt vier, vorzugsweise in Umfangsrichtung in gleichmäßiger Teilung verteilte Füllschlitze auf, so kann der Füllvorgang schneller durchgeführt werden. Unabhängig von der Zahl der Füllschlitze besteht dabei die Möglichkeit, dass an dem einen stirnseitigen Ende der Heizvorrichtung bzw. des Mantelrohres eine Verschlussperle Verwendung findet, die keinen Füllschlitz aufweist, die also dieses Mantelrohrende sowohl dicht gegenüber einem Austreten der Isoliermasse aus dem Mantelrohr als auch dicht gegenüber einem Zutritt jedes anderen Mediums bzw. Fluids in das Innere des Mantelrohrs abschließt. Eine Verschlussperle mit wenigstens einem Füllschlitz ist dann an dem anderen stirnseitigen Ende des Mantelrohrs vorgesehen.If the closure bead has on its outside a total of four filling slots, preferably distributed in the circumferential direction in a uniform division, the filling process can be carried out more quickly. Regardless of the number of Füllschlitze there is the possibility that at the one end face of the heater or the jacket tube, a sealing bead is used, which has no Füllschlitz, so this jacket tube both tight against leakage of the insulating material from the jacket tube and tight towards an access of any other medium or fluid into the interior of the jacket tube closes. A closure bead with at least one fill slot is then provided at the other end face of the jacket tube.

Nachdem die Isoliermasse über die Füllschlitze in das Innere des Mantelrohres eingefüllt worden ist, muss der wenigstens eine Füllschlitz verschlossen werden. Dies kann zum einen dadurch geschehen, dass an der Verschlussperle an ihrem von dem Mantelrohrinneren wegweisenden Seite mindestens eine verformbare Verschlussnase vorgesehen ist. Diese verformbare Verschlussnase kann nach dem Füllvorgang so verformt werden, dass sie den Füllschlitz mediumsdicht verschließt. Dies kann beispielsweise dadurch geschehen, dass die zumindest eine Verschlussnase der Verschlussperle aus einem thermisch verformbaren Kunststoff besteht, so dass mit einem Heißprägewerkzeug dieser Schließvorgang vorgenommen werden kann. Weist die Verschlussperle mehrere Füllschlitze auf, so ist für jeden dieser Füllschlitze eine derartige Verschlussnase vorgesehen.After the insulating has been filled via the filling slots in the interior of the jacket tube, the at least one filling slot must be closed. On the one hand, this can be achieved by providing at least one deformable closure nose on the closure bead on its side facing away from the casing tube interior. This deformable closure nose can be deformed after the filling process so that they mediumsdicht the filling slot closes. This can be done, for example, that the at least one closure lug of the closure bead consists of a thermally deformable plastic, so that this closing process can be carried out with a hot stamping tool. If the closure bead has a plurality of filling slots, then such a closure nose is provided for each of these filling slots.

Eine weitere Alternative zum Verschließen des oder der Füllschlitze der Verschlussperle besteht darin, dass sich an die Verschlussperle in Richtung der Außenseite des Mantelrohres, d.h. in Richtung der Mantelrohröffnung eine Abdichtperle anschließt, die das Mantelrohr mediumsdicht abschließt.A further alternative for closing the filling slot (s) of the closure bead is to attach to the closure bead towards the outside of the jacket tube, i. in the direction of the jacket tube opening a sealing bead connects, which closes the jacket tube medium-tight.

Bei den Heizvorrichtungen, wie sie aus dem Stand der Technik bekannt sind, erfolgt nach dem Einfüllen der Isoliermasse und vor der Montage der Überlastsicherung ein Walzvorgang zur Verdichtung der Isoliermasse. Bei diesem Walzvorgang verringert sich der Durchmesser des Mantelrohres, beispielsweise von 10 mm auf 8,5 mm. Der zuletzt genannte Durchmesser ist ein Durchmesser, der sich häufig in der Praxis bei derartigen Heizvorrichtungen findet, da dieser Au-βendurchmesser den Innendurchmessern von Durchgangsdurchbrechungen in einer zur Halterung der Heizvorrichtung an einem zu beheizenden Fluidbehälter vorgesehen ist. Im Gegensatz hierzu ist erfindungsgemäß vorgesehen, dass das Mantelrohr bereits einen Durchmesser aufweist, der für entsprechende Flanschbaugruppen und dergleichen verwendet werden kann, d.h., dass es nicht mehr notwendig ist, das Mantelrohr in seinem Durchmesser zu verringern. Vielmehr wird erfindungsgemäß das Mantelrohr lediglich einem Pressvorgang unterzogen. Hierdurch ist es dann auch nicht mehr notwendig, ein anschließendes Rekristallisationsglühen vorzunehmen.In the heaters, as they are known from the prior art, takes place after filling the insulating and before mounting the overload protection rolling a process for compacting the insulating. In this rolling process reduces the diameter of the jacket tube, for example, from 10 mm to 8.5 mm. The latter diameter is a diameter which is often found in practice in such heaters, since this Au-β diameter is provided to the inner diameters of through holes in a for holding the heater to a fluid container to be heated. In contrast, according to the invention, it is provided that the jacket tube already has a diameter which can be used for corresponding flange assemblies and the like, i.e. that it is no longer necessary to reduce the diameter of the jacket tube. Rather, according to the invention, the jacket tube is merely subjected to a pressing process. As a result, it is then no longer necessary to carry out a subsequent recrystallization annealing.

Durch den Wegfall der Notwendigkeit, ein Rekristallisationsglühen vornehmen zu müssen, besteht weiterhin die Möglichkeit, anstelle der bisher in der Praxis häufig verwendeten Isoliermasse, nämlich Magnesiumoxid, silikonisiertes Magnesiumoxid zu verwenden, wodurch eine Isolierung durch Kunstharz nicht mehr notwendig ist. In diesem Zusammenhang sei nach angemerkt, dass es natürlich grundsätzlich weiter möglich ist, als Isoliermasse eine Standardmasse wie Magnesiumoxid zu verwenden und die Heizvorrichtung nach Außen mit einer thermoelastischen Füllperle, die das Mantelrohr mediumsdicht abschließt, abzudichten. Dabei kann die Heizvorrichtung nach Außen zusätzlich mit einem Abdeckharz abgedichtet sein.By eliminating the need to make a Rekristallisationsglühen, there is also the possibility, instead of the insulating material previously used in practice, namely magnesium oxide, to use siliconized magnesium oxide, whereby isolation by synthetic resin is no longer necessary. In this context, it should be noted that, of course, it is further possible in principle, as insulating a standard mass such as To use magnesium oxide and seal the heater to the outside with a thermoelastic filler bead, which closes the jacket tube medium-tight. In this case, the heater may be additionally sealed to the outside with a covering resin.

Weitere vorteilhafte Ausgestaltungen sowie ein Ausführungsbeispiel der erfindungsgemäßen Heizvorrichtung werden nachstehend in Verbindung mit den Zeichnungsfiguren erläutert. Die bei der Beschreibung des Ausführungsbeispiels verwendeten Begriffe "links", "rechts", "oben" und "unten" beziehen sich auf die Zeichnungsfiguren in einer Ausrichtung mit normalen lesbaren Bezugszeichen und Figurenbezeichnungen. Hierbei ist:

Fig. 1
ein Teillängsschnitt durch eine Heizvorrichtung gemäß dem Stand der Technik;
Fig. 2A, 2B
eine perspektivische sowie eine zwei-dimensionale Teilschnittansicht einer erfindungsgemäßen Heizvorrichtung;
Fig. 3
eine Draufsicht auf eine Verschlussperle gemäß der Erfindung; und
Fig. 4
eine Stirnansicht der in Fig. 3 gezeigten Verschlussperle.
Further advantageous embodiments and an embodiment of the heating device according to the invention are explained below in conjunction with the drawing figures. The terms "left", "right", "top" and "bottom" used in the description of the embodiment refer to the drawing figures in alignment with normal readable reference numerals and figure names. Here is:
Fig. 1
a partial longitudinal section through a heating device according to the prior art;
Fig. 2A, 2B
a perspective and a two-dimensional partial sectional view of a heating device according to the invention;
Fig. 3
a plan view of a closure bead according to the invention; and
Fig. 4
an end view of the closure bead shown in Fig. 3.

Die in den Fig. 2A, 2B in einem Teillängsschnitt gezeigte, erfindungsgemäße Heizvorrichtung weist als wesentliche Bauteile bzw. Baugruppen ein Mantelrohr 10, einen elektrischen Widerstands-Heizdraht 20, eine Anschlussbaugruppe 30 und eine Isoliermasse 40 auf. Diese einzelnen Baugruppen werden nachstehend erläutert.The heating device according to the invention shown in FIGS. 2A, 2B in a partial longitudinal section has, as essential components or assemblies, a jacket tube 10, an electrical resistance heating wire 20, a connection assembly 30 and an insulating compound 40. These individual assemblies will be explained below.

Das Mantelrohr 10 besteht aus einem ausreichend oder gut wärmeleitenden Material, wie beispielsweise Edelstahl oder Aluminium, und weist einen zumindest annährend kreisförmigen Querschnitt auf. Die beiden stirnseitigen Enden 10a des Mantelrohrs 10 sind nach außen hin offen, wobei zu bemerken ist, dass in den Fig. 2A, 2B nur eines der beiden stirnseitigen Enden 10a gezeigt ist.The jacket tube 10 consists of a sufficient or good heat conducting material, such as stainless steel or aluminum, and has an at least approximately circular cross-section. The two front ends 10a of the jacket tube 10 are open to the outside, it being noted that in Figs. 2A, 2B, only one of the two front ends 10a is shown.

Obwohl nicht dargestellt, kann das Mantelrohr 10 in jede beliebige äußere Form gebracht werden, d.h. beispielsweise als gerade verlaufendes Rohr ausgestaltet sein oder in Form des Buchstabens "U" oder "W" gebogen sein. Im Gegensatz zu den Mantelrohren bekannter Heizvorrichtungen weist das Mantelrohr 10 von Anfang an, d.h. bereits zu Beginn der Montage der in dem Mantelrohr 10 angeordneten Bauteile bzw. Baugruppen den Außendurchmesser auf, den es im eingebauten Zustand, beispielsweise bei einem Fluidbehälter in einer Geschirrspülmaschine oder einer Wäschewaschmaschine besitzt.Although not shown, the jacket tube 10 can be made into any external shape, e.g. For example, be designed as a straight tube or be bent in the shape of the letter "U" or "W". In contrast to the jacket tubes of known heaters, the jacket tube 10 has from the beginning, i. already at the beginning of assembly of the arranged in the casing 10 components or assemblies on the outer diameter, which it has in the installed state, for example in a fluid container in a dishwasher or a laundry washing machine.

Wie dies aus den Fig. 2A, 2B hervorgeht, ist der elektrische Widerstands-Heizdraht 20, der im Inneren des Mantelrohrs 10 zumindest annährend koaxial zu dessen Mittellängslinie angeordnet ist und der aus einem bei Stromfluss sich erhitzenden elektrischen Widerstandsmaterial gefertigt ist, zu einer Heizwendel gewickelt. An seinen beiden freien Enden ist der elektrische Widerstands-Heizdraht 20 mit der jeweils dort befindlichen Anschlussbaugruppe 30 verbunden. Diese Verbindung kann beispielsweise durch eine Schweißung erfolgen.As can be seen from FIGS. 2A, 2B, the electrical resistance heating wire 20, which is arranged inside the casing tube 10 at least approximately coaxially to its central longitudinal line and which is made of an electrical resistance material heated at current flow, is wound into a heating coil , At its two free ends, the electrical resistance heating wire 20 is connected to the terminal assembly 30 located there. This connection can be made for example by a weld.

Die Anschlussbaugruppe 30 weist zunächst einen ebenfalls zumindest annährend koaxial zu der Mittellängslinie des Mantelrohrs 10 angeordneten Anschlussbolzen 32, der aus einem gut wärme- und elektrischleitenden Material, wie beispielsweise Kupfer, hergestellt sein kann. Um die Anbringung des elektrischen Widerstands-Heizdrahtes 20 an dem Anschlussbolzen 32 zu erleichtern, besitzt dieser an seinem zu dem elektrischen Widerstands-Heizdraht 20 weisenden Ende einen kegelförmigen Abschnitt 32a, so dass der zu der Wendel gewickelte elektrische Widerstands-Heizdraht 20 auf den Anschlussbolzen 32 leicht aufgeschoben und, wie bereits erwähnt, mittels beispielsweise eines Schweißpunktes dort festgelegt werden kann.The connection module 30 initially has a likewise at least approximately coaxial with the central longitudinal line of the jacket tube 10 arranged connecting bolt 32, which may be made of a good heat and electrically conductive material, such as copper. In order to facilitate the attachment of the electrical resistance heating wire 20 to the terminal bolt 32, this has at its facing the electrical resistance heating wire 20 end a tapered portion 32 a, so that wound to the helix electrical resistance heating wire 20 on the connecting bolt 32nd easily postponed and, as already mentioned, by means of, for example, a welding point can be specified there.

An den kegelförmigen Abschnitt 32a schließt sich ein kreiszylindrischer Abschnitt 32b des Anschlussbolzens 32 an. Letzterer ist mit einer ebenfalls zumindest annährend koaxial zu der Mittellängslinie des Mantelrohrs 10 angeordneten thermischen Überlastsicherung 34 in der Weise verbunden, dass ein Anschlussdraht 34a der thermischen Überlastsicherung 34 mit dem rechten stirnseitigen Ende des Anschlussbolzens 32 durch einen Crimp- bzw. Kerbvorgang verbunden ist. Die thermische Überlastsicherung 34 kann beispielsweise durch eine Schmelzsicherung gebildet sein, die bei Überschreiten einer vorbestimmten Temperatur die elektrische Verbindung zwischen den elektrischen Widerstands-Heizdraht 20 und einer nicht näher dargestellten Stromquelle unterbricht.The conical portion 32a is followed by a circular cylindrical portion 32b of the connecting bolt 32. The latter is connected to a likewise at least approximately coaxial with the central longitudinal line of the jacket tube 10 arranged thermal overload protection 34 in such a way that a lead wire 34a of the thermal overload protection 34 with the right frontal End of the connecting bolt 32 is connected by a crimping or notching process. The thermal overload protection 34 may be formed for example by a fuse that interrupts the electrical connection between the electrical resistance heating wire 20 and a power source, not shown, when a predetermined temperature is exceeded.

An dem rechten Ende 34b der thermischen Überlastsicherung 34, das kegelförmig ausgebildet ist, wogegen die thermische Überlastsicherung 34 ansonsten einen im wesentlichen kreiszylindrischen Querschnitt besitzt, ist ein Anschlussdrahtstück 36 mit der thermischen Überlastsicherung 34 verbunden, beispielsweise durch einen Crimp- bzw. Kerbvorgang. Dieses Anschlussdrahtstück 36 ist aus dem Mantelrohr 10 nach außen herausgeführt und dient zur Verbindung der erfindungsgemäßen Heizvorrichtung mit der bereits erwähnten, nicht weiter dargestellten elektrischen Energiequelle.At the right end 34b of the thermal overload protection 34, which is cone-shaped, whereas the thermal overload protection 34 otherwise has a substantially circular cylindrical cross section, a connecting piece of wire 36 is connected to the thermal overload protection 34, for example by a crimping or notching process. This connection piece of wire 36 is led out of the jacket tube 10 to the outside and serves to connect the heating device according to the invention with the already mentioned, not shown electrical energy source.

An dem rechten stirnseitigen Ende 10a des Mantelrohres 10 ist noch eine Verschlussperle 38 vorgesehen, die im einzelnen in den Fig. 3 und 4 näher dargestellt ist. Die Verschlussperle 38 ist aus einem thermisch verformbaren Kunststoff hergestellt. Wie aus den Fig. 2A, 2B und 4 ersichtlich ist, weist die Verschlussperle 38 vier in Umfangsrichtung der Verschlussperle 38 in gleichmäßiger Teilung verteilte Füllschlitze 38a auf. Diese Füllschlitze 38a erstrecken sich über die gesamte axiale Länge der Verschlussperle 38. Zwischen den einzelnen Füllschlitzen 38a sind Stege 38b vorgesehen, deren Außendurchmesser zumindest annährend dem Innendurchmesser des Mantelrohrs 10 entspricht. An ihrem nach außen weisenden Ende sind an den Stegen 38a Nasen 38c vorgesehen, die nach einem Füllvorgang mit einer Isoliermasse 40, wie er nachstehend näher erläutert wird, durch einen thermischen Verformungsvorgang die Füllschlitze 38a verschließen. Wie aus Fig. 2 ersichtlich ist, steht die Verschlussperle 38 über das rechte stirnseitige Ende 10a des Mantelrohres 10 über. In ihrer axialen Position ist sie mittels zweier Verkerbungen an dem Anschlussdrahtstück 36 fixiert.At the right front end 10a of the jacket tube 10 is still a closure bead 38 is provided, which is shown in detail in Figs. 3 and 4 in more detail. The closure bead 38 is made of a thermoformable plastic. As can be seen from FIGS. 2A, 2B and 4, the closure bead 38 has four fill slots 38a distributed in the circumferential direction of the closure bead 38 in a uniform pitch. These filling slots 38a extend over the entire axial length of the sealing bead 38. Webs 38b are provided between the individual filling slots 38a, whose outer diameter corresponds at least approximately to the inner diameter of the jacket tube 10. At their outwardly facing end 38a lugs 38c are provided on the webs, which close the filling slots 38a by a thermal deformation process after a filling with an insulating material 40, as will be explained in more detail below. As can be seen from FIG. 2, the closure bead 38 projects beyond the right-hand end 10 a of the jacket tube 10. In its axial position it is fixed by means of two notches on the connecting piece of wire 36.

Es ist noch zu bemerken, dass der Bereich des zweiten Anschlussendes der erfindungsgemäßen Heizvorrichtung an der nicht dargestellten Seite ebenso aufgebaut sein kann, wie es vorstehend erläutert ist. Ebenso besteht aber die Möglichkeit, dass anstelle der vorstehend beschriebenen Verschlussperle 38 eine andere Verschlussperle Verwendung findet, beispielsweise eine solche, die keine Füllschlitze aufweist und deren Außendurchmesser im wesentlichen dem Innendurchmesser des Mantelrohrs 10 entspricht. Diese Verschlussperle kann dann beispielsweise durch einen Klebevorgang in dem dortigen Ende des Mantelrohres 10 fixiert sein.It should also be noted that the area of the second terminal end of the heating device according to the invention on the side not shown as well may be constructed as explained above. However, there is also the possibility that, instead of the closure bead 38 described above, another closure bead is used, for example one which has no filling slots and whose outside diameter substantially corresponds to the inside diameter of the jacket tube 10. This closure bead can then be fixed, for example, by an adhesive process in the local end of the jacket tube 10.

Nachdem die elektrische Widerstands-Heizdraht 20 mit den an seinen beiden Enden angebrachten Anschlussbaugruppen 30 in das Innere des Mantelrohres 10 eingeführt und hinsichtlich der axialen Anordnung in seiner Lage fixiert worden ist, kann über die Füllschlitze 38a der wenigstens einen Verschlussperle 38 oder beider Verschlussperlen 38 die silikonisierte Isoliermasse 40 eingefüllt werden. Diese silikonisierte Isoliermasse 40 dient zur elektrischen Isolierung des elektrischen Widerstands-Heizdrahtes 20 und der weiteren den elektrischen Strom führenden Bauteile der Anschlussbaugruppe 30, d.h. des Anschlussbolzens 32, der thermischen Überlastsicherung 34 und dem Anschlussdrahtstück 36 gegenüber der Innenwand des Mantelrohres 10. Darüber hinaus hat die silikonisierte Isoliermasse die von dem elektrischen Widerstands-Heizdraht 20 erzeugte Wärme an das Mantelrohr 10 zu leiten. Nachdem die silikonisierte Isoliermasse 40 vollständig von der zu der Innenseite des Mantelrohres 10 weisenden Stirnseite der einen Verschlussperle 38 bis zu der ebenfalls zu der Innenseite weisenden Stirnseite der anderen Verschlussperle 38 eingefüllt worden ist, werden die Verschlussnasen 38b der Verschlussperle 38 durch einen thermischen Verformungsvorgang in der Weise verformt, dass die Füllschlitze 38a mediumsdicht verschlossen sind.After the electrical resistance heating wire 20 has been inserted with the attached at its two ends terminal assemblies 30 in the interior of the jacket tube 10 and fixed in its position with respect to the axial arrangement, via the filling slots 38 a of the at least one closure bead 38 or both closure beads 38 siliconized insulating compound 40 are filled. This siliconized insulating compound 40 serves to electrically insulate the electrical resistance heating wire 20 and the other electrical components of the terminal assembly 30, i. of the connecting bolt 32, the thermal overload protection 34 and the connecting wire piece 36 with respect to the inner wall of the jacket tube 10. In addition, the siliconized insulating compound has the heat generated by the electrical resistance heating wire 20 to conduct to the jacket tube 10. After the siliconized insulating compound 40 has been completely filled from the facing to the inside of the jacket tube 10 end of a closure bead 38 to the also facing to the inside end face of the other closure bead 38, the locking lugs 38b of the closure bead 38 by a thermal deformation process in the Deformed manner that the filling slots 38a are sealed medium-tight.

Claims (12)

Heizvorrichtung zum Erhitzen eines Fluids, insbesondere bei Haushaltsgeräten, enthaltend: ein Mantelrohr (10), wenigstens einen im Inneren des Mantelrohrs (10) angeordneten elektrischen Widerstands-Heizdraht (20), der in einer elektrisch isolierenden, wärmeleitenden Isoliermasse (40) im Mantelrohr (10) eingebettet ist, mindestens eine Anschlussbaugruppe (30), die im Inneren des Mantelrohres (10) angeordnet ist und zur Verbindung des elektrischen Widerstands-Heizdrahts (20) mit einer außerhalb des Mantelrohrs (10) befindlichen elektrischen Energiequelle aus dem Mantelrohr (10) nach außen geführt ist, und wenigstens eine Verschlussperle (38), welche die Öffnung des Mantelrohrs (10) verschließt, wobei die Anschlussbaugruppe (30) innerhalb des Mantelrohrs (10) bis zu der Verschlussperle (38) ebenfalls von der Isoliermasse (40) umgeben ist,
dadurch gekennzeichnet, dass die Verschlussperle (38) an ihrer Außenseite mit wenigstens einem sich über ihre gesamte axiale Länge erstreckenden Füllschlitz (38a) zum Einfüllen der Isoliermasse (40) in das Innere des Mantelrohrs (10) versehen ist.A heating device for heating a fluid, in particular in household appliances, comprising: a jacket tube (10), at least one in the interior of the jacket tube (10) arranged electrical resistance heating wire (20) in an electrically insulating, thermally conductive insulating compound (40) in the jacket tube ( 10) is embedded, at least one connection assembly (30) which is arranged in the interior of the jacket tube (10) and for connecting the electrical resistance heating wire (20) with an outside of the jacket tube (10) located electrical energy source from the jacket tube (10). guided to the outside, and at least one closure bead (38) which closes the opening of the jacket tube (10), wherein the connection assembly (30) within the jacket tube (10) to the closure bead (38) also surrounded by the insulating material (40) is
characterized in that the closure bead (38) is provided on its outside with at least one over its entire axial length extending filling slot (38a) for filling the insulating material (40) into the interior of the jacket tube (10). Heizvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass die Verschlussperle (38) an ihrer Außenseite insgesamt vier, vorzugsweise in Umfangsrichtung in gleichmäßiger Teilung verteilte Füllschlitze (38a) aufweist.Heating device according to claim 1,
characterized in that the closure bead (38) on its outside a total of four, preferably distributed in the circumferential direction in a uniform pitch filling slots (38a). Heizvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Verschlussperle (38) an ihrem von dem Mantelrohrinneren wegweisenden Seite mit mindestens einer verformbaren Verschlussnase (38c) versehen ist.Heating device according to claim 1 or 2,
characterized in that the closure bead (38) is provided on its side facing away from the casing inner side with at least one deformable locking lug (38c). Heizvorrichtung nach Anspruch 3,
dadurch gekennzeichnet, dass zumindest die Verschlussnase (38c) der Verschlussperle (38) aus einem thermisch verformbaren Kunststoff besteht.Heating device according to claim 3,
characterized in that at least the closure nose (38c) of the closure bead (38) consists of a thermally deformable plastic. Heizvorrichtung nach Anspruch 3 oder 4,
dadurch gekennzeichnet, dass die Verschlussnase (38c) der Verschlussperle (38) nach Abschluss des Füllvorgangs in der Weise verformbar ist, dass sie den Füllschlitz (38a) fluiddicht verschließt.Heating device according to claim 3 or 4,
characterized in that the closure nose (38c) of the closure bead (38) after completion of the filling process is deformable in such a way that it closes the filling slot (38a) fluid-tight. Heizvorrichtung nach einem der Ansprüche 1 bis 2,
dadurch gekennzeichnet, dass sich an die Verschlussperle (38) in Richtung der Außenseite des Mantelrohrs (10) mindestens eine Abdichtperle anschließt.Heating device according to one of claims 1 to 2,
characterized in that adjoins the closure bead (38) in the direction of the outside of the jacket tube (10) at least one sealing bead. Heizvorrichtung nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Anschlussbaugruppe (30) mindestens eine Überlastsicherung (34) enthält, die von der Isoliermasse (40) ebenfalls umgeben ist.Heating device according to one of claims 1 to 6,
characterized in that the connection module (30) contains at least one overload protection (34) which is also surrounded by the insulating compound (40). Heizvorrichtung nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass die Anschlussbaugruppe (30) mindestens einen Anschlussbolzen (32) enthält, der in der Isoliermasse (40) eingebettet ist und der einerseits mit dem elektrischen Widerstands-Heizdraht (20) und andererseits mit einer ggf. vorhandenen Überlastsicherung (34) verbunden ist.Heating device according to one of claims 1 to 7,
characterized in that the terminal assembly (30) includes at least one connecting bolt (32) which is embedded in the insulating compound (40) and on the one hand connected to the electrical resistance heating wire (20) and on the other hand with an optionally existing overload protection (34) is. Heizvorrichtung nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, dass Mantelrohr (10) im Heizbereich einem Pressvorgang unterziehbar ist.Heating device according to one of claims 1 to 8,
characterized in that the jacket tube (10) in the heating area a pressing operation is unterziehbar. Heizvorrichtung nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass die Isoliermasse (40) eine silikonisierte Masse, insbesondere ein silikonisiertes Magnesiumoxid ist.Heating device according to one of claims 1 to 9,
characterized in that the insulating compound (40) is a siliconized mass, in particular a siliconized magnesium oxide. Heizvorrichtung nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, dass die Isoliermasse (40) eine Standardmasse wie Magnesiumoxid ist und die Heizvorrichtung nach Außen mit einer thermoelastischen Füllperle, die das Mantelrohr (10) mediumsdicht abschließt, abgedichtet ist.Heating device according to one of claims 1 to 9,
characterized in that the insulating material (40) is a standard mass such as magnesium oxide and the heater is sealed to the outside with a thermoelastic Füllperle which closes the jacket tube (10) medium-tight. Heizvorrichtung nach Anspruch 11,
dadurch gekennzeichnet, dass die Heizvorrichtung nach Außen zusätzlich mit einem Abdeckharz abgedichtet ist.Heating device according to claim 11,
characterized in that the heater is additionally sealed to the outside with a covering resin.
EP07002319A 2006-02-06 2007-02-02 Tubular radiator with insulation mass in the end connection zone Not-in-force EP1816901B1 (en)

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PL07002319T PL1816901T3 (en) 2006-02-06 2007-02-02 Tubular radiator with insulation mass in the end connection zone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006005322A DE102006005322B4 (en) 2006-02-06 2006-02-06 Tubular heater with insulating compound in the connection end area

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EP1816901A3 EP1816901A3 (en) 2009-01-14
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EP (1) EP1816901B1 (en)
AT (1) ATE541433T1 (en)
DE (1) DE102006005322B4 (en)
ES (1) ES2380809T3 (en)
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DE102009005481B3 (en) 2009-01-21 2010-04-08 Bleckmann Gmbh & Co. Kg Connecting element for heating coil for tubular heater and production method thereof
ITRM20100291A1 (en) * 2010-05-31 2011-12-01 I R C A S P A Ind Resistenz E Corazzate E ARMORED RESISTANCE WITH EXTREME SEALING ELEMENT
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JP6355762B2 (en) 2014-10-21 2018-07-11 エルジー エレクトロニクス インコーポレイティド Defrosting device and refrigerator provided with the same
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ITUB20152625A1 (en) * 2015-07-30 2017-01-30 Irca Spa ARMORED RESISTANCE AND RELATIVE PRODUCTION PROCESS
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US20070194007A1 (en) 2007-08-23
PL1816901T3 (en) 2012-06-29
ES2380809T3 (en) 2012-05-18
EP1816901B1 (en) 2012-01-11
DE102006005322A1 (en) 2007-08-16
DE102006005322B4 (en) 2010-04-29
US7496284B2 (en) 2009-02-24
EP1816901A3 (en) 2009-01-14
ATE541433T1 (en) 2012-01-15

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