EP1643806A1 - Heating element - Google Patents

Heating element Download PDF

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Publication number
EP1643806A1
EP1643806A1 EP04023223A EP04023223A EP1643806A1 EP 1643806 A1 EP1643806 A1 EP 1643806A1 EP 04023223 A EP04023223 A EP 04023223A EP 04023223 A EP04023223 A EP 04023223A EP 1643806 A1 EP1643806 A1 EP 1643806A1
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EP
European Patent Office
Prior art keywords
heating element
carrier
contact pin
element according
pin
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
EP04023223A
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German (de)
French (fr)
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EP1643806B1 (en
Inventor
Lukas Gisler-Reinhard
Pius Studer
Leo Wallimann-Durrer
Rolf Aregger
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.)
Leister Process Technologies
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Leister Process Technologies
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Publication date
Application filed by Leister Process Technologies filed Critical Leister Process Technologies
Priority to DE502004001962T priority Critical patent/DE502004001962D1/en
Priority to EP04023223A priority patent/EP1643806B1/en
Priority to AT04023223T priority patent/ATE345026T1/en
Publication of EP1643806A1 publication Critical patent/EP1643806A1/en
Priority to HK06108554A priority patent/HK1088492A1/en
Application granted granted Critical
Publication of EP1643806B1 publication Critical patent/EP1643806B1/en
Active legal-status Critical Current
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

Definitions

  • the present invention relates to a heating element for a hot air device with a support member made of temperature-resistant material having arranged in air ducts heating wires and at one end face of a ceramic contact pin carrier is arranged for electrical contacting and the second end face is covered with a temperature-resistant protective glass.
  • the end pieces of the multi-part heating element are exactly aligned with the carrier part and are fixed to the carrier part by means of a centrally arranged metal holding pin.
  • heating elements are known from hot air devices available on the market as hot air devices, modules or systems.
  • the body of the arranged in an air or gas flow heating element is usually made of ceramic or other suitable, heat-resistant material and is located in a heating tube, at one end, for example, air or gas is blown.
  • the heating element is held, for example via a central pin on a arranged on the fan side facing the holder.
  • This holder is also the electrical connection of arranged in the support member heating wires.
  • On the side facing the outlet is usually still in addition a ceramic cover, which has substantially air channels.
  • the protective screen is movable and from the carrier separated, but also sits on the pin-shaped holder, which is squashed at its free end, for example, to prevent slipping of the carrier and the protective disk.
  • bracket, the heating wire carrier and the protective screen are aligned exactly during assembly and this alignment is ensured over the entire service life of the heating element and also during operation under the influence of thermal and mechanical loads.
  • the central receiving pin as a square pin and the associated receiving holes of the items corresponding or to form on the contact surfaces of the items on the outer circumference in recesses engaging noses.
  • Such designed ceramic parts are expensive to produce and cause high individual item costs and are not permanently reliable due to the risk of breakage of the ceramic.
  • the present invention is therefore based on the object to propose an improved heating element, in which the rotation protection is made simpler and more effective and in addition the unit costs are reduced.
  • the carrier part, the contact pin carrier and the protective disk are aligned with one another via a torsion protection element penetrating the carrier part.
  • This design ensures a highly accurate alignment of the parts to each other and reduces the risk that by twisting the twist protection is ineffective.
  • the anti-rotation elements are expediently arranged parallel to the air ducts extending in the longitudinal direction of the carrier part and penetrate the carrier part over its entire length. This makes it possible to produce the carrier part of an extruded profile and finish without reworking by mere cutting to length. Thus, the number of process steps in the production becomes of the support member significantly reduced, which in turn leads to a reduction in unit costs.
  • the Verfschmotheretti consist of mutually aligned holes of the contact pin carrier, the support member and the protective plate and an inset locking pin, which maintains the positionally accurate alignment.
  • Both the holes and the pin can be inexpensively, the latter e.g. be made of an extruded profile, and thus enable accurate location and location compliance even at different operating temperatures of the hot air device.
  • the locking pin is loosely inserted and secured by associated contact elements.
  • the carrier part has at least one through hole for receiving the securing pin and the contact pin carrier and the protective disk to the receiving hole of the carrier part corresponding holes.
  • Holes are simple, quick and highly accurate to manufacture and reduce the cost of the tools needed for manufacturing.
  • the holes of the contact pin carrier and the protective disc are at least partially formed as blind holes to prevent falling out of the locking pin.
  • the locking pin can be made as a metallic pin or other temperature-stable materials. Conveniently, the locking pin at one end to a thickening. This thickening secures the loose locking pin against falling out by investing in the front side of a running with a smaller diameter receiving hole of the support member.
  • the thickening is produced as a flattening, for example by pinching the securing pin.
  • the holes designed as a blind hole of the contact pin holder and / or the protective disk have a larger diameter than the corresponding hole in the carrier part.
  • the securing pin is shorter than the body of the heating element is long. This has the advantage that the locking pin is completely enclosed in the body of the heating element.
  • FIG. 1 shows an embodiment of the heating element 1 according to the invention, consisting of a carrier part 2, which is arranged between a contact pin carrier 3 and a protective disk 4.
  • the contact pin carrier 3 has air passages 5, which are aligned with the axial air channels, not shown, in the carrier part 2 and the air passages of the protective disk 3, not shown.
  • heating wires, not shown are arranged in a known manner.
  • the heating element 1 has centrally arranged one of three consecutively arranged holes in the contact pin carrier 3, carrier part 2 and protective plate 4 existing receiving channel 16 for a retaining pin 7, through which the support member 2 and the protective plate 4 are fixed to the contact pin carrier 3.
  • the two protruding from the heating element 1 ends of the hollow cylindrical retaining pin 7 are flanged. and hold the protective plate 4 and the contact pin carrier 3 on the support part 2 firmly.
  • a Verwartikelement 8 is arranged, which prevents the carrier part 2 and / or the protective plate 4 is changed to the contact pin carrier 3 in its radial orientation.
  • the anti-rotation element 8 is formed from a receiving channel 17 and a loosely fitting locking pin 9.
  • Figure 2 shows a sectional view of the side view of the heating element 1 shown in Figure 1.
  • the retaining pin 7 is disposed in the central axis and extends with its two ends on the protective plate 4 and the contact pin carrier 3 addition.
  • Below the retaining pin 7 of the receiving channel 17 is shown for the locking pin 9, which consists of three mutually aligned, abutting holes 11, 10, 12 of the contact pin carrier 3, the support member 2 and the protective screen 4.
  • the hole 12 in the protective plate 4 is designed as a through hole and has a larger diameter than the through hole 10 of the support part 2.
  • the corresponding hole 11 in the contact pin carrier 3 is stepped and executed as a blind hole.
  • the support part 2 facing the end of the blind hole has a larger diameter than the opposite end and as the associated through hole 10 of the support member 2.
  • the thickening 13 of the locking pin 9 is received and this fixed in the axial direction.
  • the locking pin 9 is inserted into the through hole 10 of the support member 2 and into the hole 12 of the protective plate 4 before the protective plate 4 and the support member 2 are attached to the retaining pin 7. Subsequently, the locking pin 9 is fixed on the contact pin carrier 3, which is held on the retaining pin 7.

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  • Resistance Heating (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)

Abstract

The heating element for a warm air device consisting of a support component (2), a contact pin carrier (3), and a protective disc (4) which are orientated in relation to each other via at least one one-piece anti-twist element (8) passing through the support component over its whole length. A locking pin (9) of the anti-twist element is inserted loosely in a channel (17) in the heating element and is enclosed in the heating element by the contact pin carrier and/or the protective disc.

Description

Die vorliegende Erfindung betrifft ein Heizelement für eine Heißlufteinrichtung mit einem Trägerteil aus temperaturbeständigem Material, das in Luftkanälen angeordnete Heizdrähte aufweist und an dessen einer Stirnfläche ein keramischer Kontaktstiftträger zur elektrischen Kontaktierung angeordnet ist und dessen zweite Stirnfläche mit einer temperaturfesten Schutzscheibe abgedeckt ist. Die Endstücke des mehrteilig aufgebauten Heizelements sind zum Trägerteil exakt ausgerichtet und werden am Trägerteil mittels eines zentral angeordneten Metallhaltestiftes fixiert.The present invention relates to a heating element for a hot air device with a support member made of temperature-resistant material having arranged in air ducts heating wires and at one end face of a ceramic contact pin carrier is arranged for electrical contacting and the second end face is covered with a temperature-resistant protective glass. The end pieces of the multi-part heating element are exactly aligned with the carrier part and are fixed to the carrier part by means of a centrally arranged metal holding pin.

Derartige Heizelemente sind aus Heißlufteinrichtungen bekannt, die als Heißluftgeräte, -module oder -systeme auf dem Markt erhältlich sind. Der Körper des in einem Luft- oder Gasstrom angeordneten Heizelements besteht üblicherweise aus Keramik oder aus einem anderen geeigneten, hitzebeständigen Material und befindet sich in einem Heizrohr, an dessen einem Ende beispielsweise Luft oder Gas eingeblasen wird. Das Heizelement wird beispielsweise über einen zentralen Stift an einer auf der dem Gebläse zugewandten Seite angeordneten Halterung gehalten. Über diese Halterung erfolgt auch der elektrische Anschluss der in dem Trägerteil angeordneten Heizdrähte. Auf der dem Auslass zugewandten Seite befindet sich in der Regel noch zusätzlich eine Keramikschutzscheibe, die im Wesentlichen Luftkanäle aufweist. Die Schutzscheibe ist beweglich und vom Träger getrennt, sitzt jedoch ebenfalls auf der stiftförmigen Halterung, die an ihrem freien Ende beispielsweise gequetscht ist, um ein Abrutschen des Trägers und der Schutzscheibe zu verhindern. Es ist besonders wichtig, dass die Halterung, der Heizdrahtträger und die Schutzscheibe bei der Montage exakt zueinander ausgerichtet werden und diese Ausrichtung über die gesamte Lebensdauer des Heizelements und auch während des Betriebes unter Einwirkung von thermischen und mechanischen Belastungen sichergestellt ist. Dazu ist es üblich, den zentralen Aufnahmestift als Vierkantstift und die zugeordneten Aufnahmelöcher der Einzelteile korrespondierend auszuführen oder an den Anlageflächen der Einzelteile am äußeren Umfang in Ausnehmungen eingreifende Nasen anzuformen. Derartig ausgestaltete Keramikteile sind nur aufwendig herstellbar und verursachen hohe Einzelstückkosten und sind wegen der Bruchgefahr der Keramik nicht dauerhaft funktionssicher.Such heating elements are known from hot air devices available on the market as hot air devices, modules or systems. The body of the arranged in an air or gas flow heating element is usually made of ceramic or other suitable, heat-resistant material and is located in a heating tube, at one end, for example, air or gas is blown. The heating element is held, for example via a central pin on a arranged on the fan side facing the holder. About this holder is also the electrical connection of arranged in the support member heating wires. On the side facing the outlet is usually still in addition a ceramic cover, which has substantially air channels. The protective screen is movable and from the carrier separated, but also sits on the pin-shaped holder, which is squashed at its free end, for example, to prevent slipping of the carrier and the protective disk. It is particularly important that the bracket, the heating wire carrier and the protective screen are aligned exactly during assembly and this alignment is ensured over the entire service life of the heating element and also during operation under the influence of thermal and mechanical loads. For this purpose, it is customary to execute the central receiving pin as a square pin and the associated receiving holes of the items corresponding or to form on the contact surfaces of the items on the outer circumference in recesses engaging noses. Such designed ceramic parts are expensive to produce and cause high individual item costs and are not permanently reliable due to the risk of breakage of the ceramic.

Der vorliegenden Erfindung liegt daher die Aufgabe zu Grunde, ein verbessertes Heizelement vorzuschlagen, bei dem der Verdrehschutz einfacher und wirksamer gestaltet wird und zusätzlich die Stückkosten reduziert werden.The present invention is therefore based on the object to propose an improved heating element, in which the rotation protection is made simpler and more effective and in addition the unit costs are reduced.

Diese Aufgabe wird erfindungsgemäß durch ein Heizelement mit den Merkmalen des Anspruchs 1 gelöst. Weitere vorteilhafte Ausgestaltungen sind den Unteransprüchen zu entnehmen.This object is achieved by a heating element with the features of claim 1. Further advantageous embodiments can be found in the dependent claims.

Gemäß der Erfindung werden das Trägerteil, der Kontaktstiftträger und die Schutzscheibe über ein das Trägerteil durchdringendes Verdrehschutzelement zueinander ausgerichtet. Diese Ausführung gewährleistet eine hoch genaue Ausrichtung der Teile zueinander und verringert die Gefahr, dass durch Keramikbruch der Verdrehschutz unwirksam wird.According to the invention, the carrier part, the contact pin carrier and the protective disk are aligned with one another via a torsion protection element penetrating the carrier part. This design ensures a highly accurate alignment of the parts to each other and reduces the risk that by twisting the twist protection is ineffective.

Die Verdrehschutzelemente sind zweckmäßigerweise parallel zu den in Längsrichtung des Trägerteils verlaufenden Luftkanälen angeordnet und durchdringen das Trägerteil über dessen gesamte Länge. Dies ermöglicht, das Trägerteil aus einem Strangpressprofil herzustellen und ohne Nacharbeit durch bloßes Ablängen fertig zu stellen. Somit wird die Anzahl der Prozessschritte bei der Herstellung des Trägerteils deutlich verringert, was wiederum eine Senkung der Stückkosten nach sich führt.The anti-rotation elements are expediently arranged parallel to the air ducts extending in the longitudinal direction of the carrier part and penetrate the carrier part over its entire length. This makes it possible to produce the carrier part of an extruded profile and finish without reworking by mere cutting to length. Thus, the number of process steps in the production becomes of the support member significantly reduced, which in turn leads to a reduction in unit costs.

In einer weiteren vorteilhaften Ausgestaltung bestehen die Verdrehschutzelemente aus zueinander fluchtenden Löcher des Kontaktstiftträgers, des Trägerteils und der Schutzscheibe sowie einem einliegenden Sicherungsstift, welcher die lagegenaue Ausrichtung aufrecht erhält. Sowohl die Löcher als auch der Stift können kostengünstig, Letzterer z.B. aus einem Strangpressprofil, hergestellt werden und ermöglichen somit eine genaue Lagefestlegung und Lageeinhaltung auch bei unterschiedlichen Betriebstemperaturen der Heißlufteinrichtung. Zweckmäßigerweise wird der Sicherungsstift lose eingelegt und durch zugeordnete Anlageelemente gesichert.In a further advantageous embodiment, the Verdrehschutzelemente consist of mutually aligned holes of the contact pin carrier, the support member and the protective plate and an inset locking pin, which maintains the positionally accurate alignment. Both the holes and the pin can be inexpensively, the latter e.g. be made of an extruded profile, and thus enable accurate location and location compliance even at different operating temperatures of the hot air device. Conveniently, the locking pin is loosely inserted and secured by associated contact elements.

Erfindungsgemäß weist das Trägerteil mindestens ein Durchgangsloch zur Aufnahme des Sicherungsstiftes und der Kontaktstiftträger sowie die Schutzscheibe zu den Aufnahmeloch des Trägerteils korrespondierende Löcher auf. Löcher sind einfach, schnell und hochgenau herzustellen und reduzieren die Kosten der für die Fertigung notwendigen Werkzeuge. Zudem ist es möglich, die Sicherungsscheibe ebenfalls kostengünstig aus einem Strangpressprofil herzustellen. Vorteilhafterweise sind die Löcher des Kontaktstiftträgers sowie der Schutzscheibe zumindest teilweise als Sacklöcher ausgebildet, um ein Herausfallen des Sicherungsstiftes zu verhindern.According to the invention, the carrier part has at least one through hole for receiving the securing pin and the contact pin carrier and the protective disk to the receiving hole of the carrier part corresponding holes. Holes are simple, quick and highly accurate to manufacture and reduce the cost of the tools needed for manufacturing. In addition, it is possible to produce the locking washer also inexpensively from an extruded profile. Advantageously, the holes of the contact pin carrier and the protective disc are at least partially formed as blind holes to prevent falling out of the locking pin.

Der Sicherungsstift kann als metallischer Stift oder anderen temperaturstabilen Materialien hergestellt sein. Zweckmäßigerweise weist der Sicherungsstift an einem Ende eine Verdickung auf. Diese Verdickung sichert den lose einliegenden Sicherungsstift gegen Herausfallen durch Anlage an die Stirnseite einem mit geringeren Durchmesser ausgeführten Aufnahmeloch des Trägerteils. Vorteilhafterweise ist die Verdickung als Abflachung, beispielweise durch Quetschung des Sicherungsstiftes, hergestellt.The locking pin can be made as a metallic pin or other temperature-stable materials. Conveniently, the locking pin at one end to a thickening. This thickening secures the loose locking pin against falling out by investing in the front side of a running with a smaller diameter receiving hole of the support member. Advantageously, the thickening is produced as a flattening, for example by pinching the securing pin.

Zur Aufnahme des verdickten Endes des Sicherungsstiftes weisen die als Sackloch ausgeführten Löcher des Kontaktstifthalters und/oder der Schutzscheibe einen größeren Durchmesser auf, als das korrespondierende Loch im Trägerteil. In einer weiteren vorteilhaften Ausgestaltung ist der Sicherungsstift kürzer als der Körper des Heizelements lang ist. Dies hat den Vorteil, dass der Sicherungsstift komplett im Körper des Heizelementes eingeschlossen ist.For receiving the thickened end of the securing pin, the holes designed as a blind hole of the contact pin holder and / or the protective disk have a larger diameter than the corresponding hole in the carrier part. In a further advantageous embodiment, the securing pin is shorter than the body of the heating element is long. This has the advantage that the locking pin is completely enclosed in the body of the heating element.

Nachfolgend wird die Erfindung anhand eines in den begleitenden Zeichnungen dargestellten Ausführungsbeispiels näher erläutert. Es stellen dar:

Figur 1
eine schematische Schnittdarstellung des erfindungsgemäßen Heizelements in perspektivischer Ansicht;
Figur 2
eine Seitenansicht des in Figur 1 dargestellten Heizelements in einer Längsschnittdarstellung
The invention will be explained in more detail with reference to an embodiment shown in the accompanying drawings. They show:
FIG. 1
a schematic sectional view of the heating element according to the invention in a perspective view;
FIG. 2
a side view of the heating element shown in Figure 1 in a longitudinal sectional view

Figur 1 zeigt eine Ausgestaltungsform des erfindungsgemäßen Heizelements 1, bestehend aus einem Trägerteil 2, das zwischen einem Kontaktstiftträger 3 und einer Schutzscheibe 4 angeordnet ist. Der Kontaktstiftträger 3 weist Luftdurchlässe 5 auf, die mit den nicht dargestellten axialen Luftkanälen im Trägerteil 2 und den nicht dargestellten Luftdurchlässen der Schutzscheibe 3 fluchten. In den Luftkanälen 5 des Kontaktstiftträgers 3 und dem Trägerteil 2 sind in bekannter Art und Weise nicht dargestellte Heizdrähte angeordnet. Das Heizelement 1 weist zentral angeordnet einen aus drei hintereinander angeordneten Löcher im Kontaktstiftträger 3, Trägerteil 2 und Schutzscheibe 4 bestehenden Aufnahmekanal 16 für einen Haltestift 7 auf, durch den das Trägerteil 2 und die Schutzscheibe 4 am Kontaktstiftträger 3 fixiert sind. Die beiden aus dem Heizelement 1 hervortretenden Enden des hohlzylinderförmigen Haltestiftes 7 sind umgebördelt. und halten die Schutzscheibe 4 und den Kontaktstiftträger 3 am Trägerteil 2 fest. Parallel zum Aufnahmekanal 16 ist ein Verdrehschutzelement 8 angeordnet, welches verhindert, dass sich das Trägerteil 2 und/oder die Schutzscheibe 4 zum Kontaktstiftträger 3 in seiner radialen Ausrichtung verändert. Das Verdrehschutzelement 8 wird aus einem Aufnahmekanal 17 und einem lose einliegenden Sicherungsstift 9 gebildet.FIG. 1 shows an embodiment of the heating element 1 according to the invention, consisting of a carrier part 2, which is arranged between a contact pin carrier 3 and a protective disk 4. The contact pin carrier 3 has air passages 5, which are aligned with the axial air channels, not shown, in the carrier part 2 and the air passages of the protective disk 3, not shown. In the air channels 5 of the contact pin carrier 3 and the support part 2 heating wires, not shown, are arranged in a known manner. The heating element 1 has centrally arranged one of three consecutively arranged holes in the contact pin carrier 3, carrier part 2 and protective plate 4 existing receiving channel 16 for a retaining pin 7, through which the support member 2 and the protective plate 4 are fixed to the contact pin carrier 3. The two protruding from the heating element 1 ends of the hollow cylindrical retaining pin 7 are flanged. and hold the protective plate 4 and the contact pin carrier 3 on the support part 2 firmly. Parallel to the receiving channel 16, a Verdrehschutzelement 8 is arranged, which prevents the carrier part 2 and / or the protective plate 4 is changed to the contact pin carrier 3 in its radial orientation. The anti-rotation element 8 is formed from a receiving channel 17 and a loosely fitting locking pin 9.

Figur 2 zeigt in einer Schnittdarstellung die Seitenansicht des in Figur 1 dargestellten Heizelements 1. Der Haltestift 7 ist in der Mittelachse angeordnet und reicht mit seinen beiden Enden über die Schutzscheibe 4 und den Kontaktstiftträger 3 hinaus. Unterhalb des Haltestiftes 7 ist der Aufnahmekanal 17 für den Sicherungsstift 9 dargestellt, der aus drei zueinander fluchtenden, aneinander anliegende Löcher 11, 10, 12 des Kontaktstiftträgers 3, des Trägerteils 2 sowie der Schutzscheibe 4 besteht. Das Loch 12 in der Schutzscheibe 4 ist als Durchgangsloch ausgeführt und weist einen größeren Durchmesser auf als das Durchgangsloch 10 des Trägerteils 2. Das korrespondierende Loch 11 im Kontaktstiftträger 3 ist stufig und als Sackloch ausgeführt. Das dem Trägerteil 2 zugewandte Ende des Sacklochs weist einen größeren Durchmesser als das abgewandte Ende und als das zugeordnete Durchgangsloch 10 des Trägerteils 2 auf. Im erweiterten Teil des Loches 11 des Kontaktstiftträgers 3 wird die Verdickung 13 des Sicherungsstiftes 9 aufgenommen und dieser in axialer Richtung fixiert. Bei der Montage des Heizelements 1 wird der Sicherungsstift 9 in dem Durchgangsloch 10 des Trägerteils 2 und in das Loch 12 der Schutzscheibe 4 eingesteckt, bevor die Schutzscheibe 4 und das Trägerteil 2 auf den Haltestift 7 aufgesteckt werden. Anschließend wird der Sicherungsstift 9 über den Kontaktstiftträger 3, der über den Haltestift 7 gehalten wird, fixiert.Figure 2 shows a sectional view of the side view of the heating element 1 shown in Figure 1. The retaining pin 7 is disposed in the central axis and extends with its two ends on the protective plate 4 and the contact pin carrier 3 addition. Below the retaining pin 7 of the receiving channel 17 is shown for the locking pin 9, which consists of three mutually aligned, abutting holes 11, 10, 12 of the contact pin carrier 3, the support member 2 and the protective screen 4. The hole 12 in the protective plate 4 is designed as a through hole and has a larger diameter than the through hole 10 of the support part 2. The corresponding hole 11 in the contact pin carrier 3 is stepped and executed as a blind hole. The support part 2 facing the end of the blind hole has a larger diameter than the opposite end and as the associated through hole 10 of the support member 2. In the enlarged part of the hole 11 of the contact pin carrier 3, the thickening 13 of the locking pin 9 is received and this fixed in the axial direction. When mounting the heating element 1, the locking pin 9 is inserted into the through hole 10 of the support member 2 and into the hole 12 of the protective plate 4 before the protective plate 4 and the support member 2 are attached to the retaining pin 7. Subsequently, the locking pin 9 is fixed on the contact pin carrier 3, which is held on the retaining pin 7.

Claims (9)

Heizelement (1) für eine Heißlufteinrichtung, bestehend aus einem Trägerteil (2), einem Kontaktstiftträger (3) und einer Schutzscheibe (4), dessen aus temperaturbeständigen Material bestehendes Trägerteil (2) in Luftkanälen angeordnete Heizdrähte aufweist und an dessen Stimflächen der keramische Kontaktstiftträger (3) zur elektrischen Kontaktierung der Heizdrähte und die Schutzscheibe (4) aus temperaturbeständigem Material angeordnet sind, wobei der Kontaktstiftträger (3) und die Schutzscheibe (4) mit den Luftkanälen des Trägerteils (2) fluchtende Luftdurchlässe (5) aufweisen und mittels eines zentral angeordneten Metallhaltestiftes (7) am Trägerteil (2) fixiert sind, dadurch gekennzeichnet, dass das Trägerteil (2), der Kontaktstiftträger (3) und die Schutzscheibe (4) über mindestens ein einstückiges und das Trägerteil (2) in seiner ganzen Länge durchdringendes Verdrehschutzelement (8) zueinander ausgerichtet sind.Heating element (1) for a hot air device, comprising a carrier part (2), a contact pin carrier (3) and a protective plate (4) whose temperature-resistant material existing carrier part (2) arranged in air channels heating wires and on the end surfaces of the ceramic contact pin carrier ( 3) for electrical contacting of the heating wires and the protective plate (4) are arranged made of temperature-resistant material, wherein the contact pin carrier (3) and the protective disc (4) with the air channels of the support part (2) aligned air passages (5) and arranged by means of a centrally Metal support pin (7) on the support part (2) are fixed, characterized in that the carrier part (2), the contact pin carrier (3) and the protective disk (4) via at least one integral and the support member (2) in its entire length penetrating Verdrehschutzelement ( 8) are aligned with each other. Heizelement nach Anspruch 1, dadurch gekennzeichnet, dass die Verdrehschutzelemente (8) parallel zu den in Längsrichtung verlaufenden Luftkanälen des Trägerelements (2) angeordnet sind.Heating element according to claim 1, characterized in that the Verdrehschutzelemente (8) are arranged parallel to the longitudinally extending air channels of the carrier element (2). Heizelement nach Anspruch 2, dadurch gekennzeichnet, dass das Verdrehschutzelement (8) als Löcher (10, 11, 12) mit lose einliegendem Sicherungsstift (9) ausgeführt sind.Heating element according to claim 2, characterized in that the anti-rotation element (8) are designed as holes (10, 11, 12) with loosely fitting locking pin (9). Heizelement nach Anspruch 2, dadurch gekennzeichnet, dass das Trägerteil (2) mindestens ein Durchgangsloch (10) zur Aufnahme von mindestens einem Sicherungsstift (9) aufweist.Heating element according to claim 2, characterized in that the carrier part (2) has at least one through hole (10) for receiving at least one locking pin (9). Heizelement nach Anspruch 1, dadurch gekennzeichnet, dass die Schutzscheibe (4) und der Kontaktstiftträger (3) zu dem Durchgangsloch (10) des Trägerteils (2) korrespondierende Löcher (11, 12) aufweisen.Heating element according to claim 1, characterized in that the protective disc (4) and the contact pin carrier (3) to the through hole (10) of the support part (2) corresponding holes (11, 12). Heizelement nach Anspruch 5, dadurch gekennzeichnet, dass die Löcher (11, 12) des Kontaktstiftträgers (3) und/oder der Schutzscheibe (4) zumindest teilweise als Sacklöcher ausgebildet sind.Heating element according to claim 5, characterized in that the holes (11, 12) of the contact pin carrier (3) and / or the protective plate (4) are at least partially formed as blind holes. Heizelement nach Anspruch 3, dadurch gekennzeichnet, dass der Sicherungsstift (9) an einem Ende eine Verdickung (13) aufweist.Heating element according to claim 3, characterized in that the securing pin (9) has a thickening (13) at one end. Heizelement nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass die Löcher (11, 12) im Kontaktstiftträger (3) und in der Schutzscheibe (4) einen größeren Durchmesser aufweisen als die Löcher (10) im Trägerteil (2).Heating element according to one of the preceding claims, characterized in that the holes (11, 12) in the contact pin carrier (3) and in the protective plate (4) have a larger diameter than the holes (10) in the carrier part (2). Heizelement nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, dass der Sicherungsstift (9) kürzer ist als der Körper des Heizelements (1) lang ist.Heating element according to one of the preceding claims, characterized in that the securing pin (9) is shorter than the body of the heating element (1) is long.
EP04023223A 2004-09-29 2004-09-29 Heating element Active EP1643806B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502004001962T DE502004001962D1 (en) 2004-09-29 2004-09-29 heating element
EP04023223A EP1643806B1 (en) 2004-09-29 2004-09-29 Heating element
AT04023223T ATE345026T1 (en) 2004-09-29 2004-09-29 HEATING ELEMENT
HK06108554A HK1088492A1 (en) 2004-09-29 2006-08-01 Heating element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04023223A EP1643806B1 (en) 2004-09-29 2004-09-29 Heating element

Publications (2)

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EP1643806A1 true EP1643806A1 (en) 2006-04-05
EP1643806B1 EP1643806B1 (en) 2006-11-08

Family

ID=34926783

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EP04023223A Active EP1643806B1 (en) 2004-09-29 2004-09-29 Heating element

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EP (1) EP1643806B1 (en)
AT (1) ATE345026T1 (en)
DE (1) DE502004001962D1 (en)
HK (1) HK1088492A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104302023A (en) * 2014-10-27 2015-01-21 苏州伟热电器科技有限公司 Refill for heating air duct
CN104302024A (en) * 2014-10-27 2015-01-21 苏州伟热电器科技有限公司 Honeycomb type substitute core

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134684A (en) * 1990-05-21 1992-07-28 Gte Products Corporation Electric air or gas heater utilizing a plurality or serpentine heating elements
US20020108944A1 (en) * 2001-01-24 2002-08-15 Markus Wyss Hot-air device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134684A (en) * 1990-05-21 1992-07-28 Gte Products Corporation Electric air or gas heater utilizing a plurality or serpentine heating elements
US20020108944A1 (en) * 2001-01-24 2002-08-15 Markus Wyss Hot-air device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104302023A (en) * 2014-10-27 2015-01-21 苏州伟热电器科技有限公司 Refill for heating air duct
CN104302024A (en) * 2014-10-27 2015-01-21 苏州伟热电器科技有限公司 Honeycomb type substitute core

Also Published As

Publication number Publication date
HK1088492A1 (en) 2006-11-03
DE502004001962D1 (en) 2006-12-21
ATE345026T1 (en) 2006-11-15
EP1643806B1 (en) 2006-11-08

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