DE19716010C1 - Extremely thin, safe, metal-clad electrical heater with integral thermocouple - Google Patents

Extremely thin, safe, metal-clad electrical heater with integral thermocouple

Info

Publication number
DE19716010C1
DE19716010C1 DE1997116010 DE19716010A DE19716010C1 DE 19716010 C1 DE19716010 C1 DE 19716010C1 DE 1997116010 DE1997116010 DE 1997116010 DE 19716010 A DE19716010 A DE 19716010A DE 19716010 C1 DE19716010 C1 DE 19716010C1
Authority
DE
Germany
Prior art keywords
temperature sensor
jacket tube
metal
safe
extremely thin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE1997116010
Other languages
German (de)
Inventor
Erich Hillinger
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.)
Tuerk and Hillinger GmbH
Original Assignee
Tuerk and Hillinger GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tuerk and Hillinger GmbH filed Critical Tuerk and Hillinger GmbH
Priority to DE1997116010 priority Critical patent/DE19716010C1/en
Application granted granted Critical
Publication of DE19716010C1 publication Critical patent/DE19716010C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227Applications
    • H05B1/023Industrial applications
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/40Heating elements having the shape of rods or tubes
    • H05B3/42Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material

Landscapes

  • Resistance Heating (AREA)

Abstract

The heating element has an integral temperature sensor. The coiled heating element (3) and HV insulation (2) within the tubular casing, has a hairpin configuration. Connections (6) to the element are brought out at one end of the casing. Those (5) for the temperature sensor are brought out at the other. In this novel design, The sensor is a thermocouple (4), its junction located coaxially in the casing (1). The casing itself is wound up bodily into a cylindrical coil.

Description

Die Erfindung betrifft einen mit integriertem Temperaturfühler ausgerüsteten Mantelrohrheizkörper gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an with integrated temperature sensor equipped jacket tubular heater according to the preamble of Claim 1.

Derartige Rohrheizkörper werden vor allem zum Beheizen von Kunststoffspritzdüsen verwendet und dort in Form einer Wendel auf dem Düsenkörper angeordnet.Such tubular heaters are used primarily for heating Plastic spray nozzles used and there in the form of a spiral arranged on the nozzle body.

Einen solchen Rohrheizkörper offenbart beispielsweise das DE 79 32 598 U1. Dieser Heizkörper weist einen längs und parallel zur Heizwicklung angeordneten, zur Temperaturregelung dienen­ den Temperaturfühler auf. Die elektrischen Anschlüsse dieses Temperaturfühlers sind an derjenigen Seite des Heizkörpers an der sich auch die Anschlüsse der Heizwicklung befinden. Diese Anordnung wird jedoch problematisch, wenn der Heizkörper einen relativ kleinen Durchmesser aufweist und somit die erforderli­ chen Sicherheitsabstände zwischen der Heizwicklung und dem Me­ tallmantel nicht mehr einzuhalten sind.DE, for example, discloses such a tubular heater 79 32 598 U1. This radiator has a lengthways and parallel arranged for heating winding, serve for temperature control the temperature sensor. The electrical connections of this Temperature sensors are on the side of the radiator which are also the connections of the heating winding. This Arrangement, however, becomes problematic when the radiator is one has a relatively small diameter and thus the required Chen safety distances between the heating winding and the me tallmantel are no longer adhered to.

Demgegenüber zeigt die US-PS 3 746 838 einen Heizkörper mit ei­ nem termomechanisch arbeitenden Regler. Auch diese, nur bedingt biegefähige Bauart ist nicht geeignet für relativ kleine äußere Abmessungen des Mantelrohrheizkörpers.In contrast, US Pat. No. 3,746,838 shows a radiator with an egg a thermomechanical controller. This too, only to a limited extent flexible design is not suitable for relatively small external Dimensions of the tubular casing heater.

Zu diesem Stand der Technik wird auch noch auf die DE 33 43 822 C1 verwiesen, aus der jedoch im wesentlichen nur zu entnehmen ist, daß es bereits bekannt war, Mantelrohrheizkörper zusätz­ lich noch zu wendeln oder auch haarnadelförmig zu gestalten.This prior art is also referred to in DE 33 43 822 C1 referenced, but essentially only from the is that it was already known, additional tubular heating element Lich still to spiral or to make hairpin-shaped.

Aufgabe der vorliegenden Erfindung ist es, einen Mantelrohr­ heizkörper mit integriertem Temperaturfühler zu schaffen, bei dem der Meßort am Heizkörper frei wählbar ist und bei dem die erforderliche Hochspannungsfestigkeit auch bei sehr kleinen, möglichst noch unter 3 mm liegenden Außendurchmessern des Rohr­ heizkörpers gewährleistet werden kann.The object of the present invention is a jacket tube to create radiators with integrated temperature sensor at which the measuring point on the radiator is freely selectable and where required high voltage strength even with very small, if possible, the outside diameter of the pipe is still less than 3 mm radiator can be guaranteed.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des Pa­ tentanspruchs 1 gelöst.This task is characterized by the characteristic features of Pa claim 1 solved.

Der erfindungsgemäße Mantelrohrheizkörper ermöglicht es, auch bei sehr kleinen Außendurchmessern bis herunter auf 2 mm und weniger die erforderlichen Sicherheitsabstände zwischen der Heizwicklung und dem Metallmantel einzuhalten. Damit wird vor allem die Voraussetzung geschaffen für die Verwendung solcher Rohrheizkörper zur Beheizung auch sehr kleiner Düsen. Mantel­ rohrheizkörper mit diesen kleinen Durchmessern haben vor allem noch den Vorteil, daß sie sehr massearm sind und somit eine ge­ naue Temperaturregelung ermöglichen.The tubular casing heater according to the invention also makes it possible with very small outside diameters down to 2 mm and less the required safety distances between the Heating coil and the metal jacket. So that will all created the conditions for the use of such Tubular heating element for heating even very small nozzles. Coat tubular radiators with these small diameters have above all still the advantage that they are very low in mass and thus a ge enable accurate temperature control.

Der Gegenstand der Erfindung ist in einem Ausführungsbeispiel in der Zeichnung dargestellt und nachfolgend beschrieben.The object of the invention is in one embodiment shown in the drawing and described below.

Es zeigenShow it

Fig. 1 den Mantelrohrheizkörper in gestreckter Form, Fig. 1 shows the jacket tube radiators in elongated form,

Fig. 2 den Heizkörper gemäß Fig. 1 haarnadelförmig gestaltet und Fig. 2 designed the radiator of FIG. 1 hairpin-shaped and

Fig. 3 den zu einer Wendel geformten Rohrheizkörper. Fig. 3 shows the tubular heater formed into a coil.

Der dargestellte Rohrheizkörper besteht aus einem Metallmantel 1, einer in diesen Mantel 1 mittels verdichtetem Isoliermaterial 2 eingebetteten Heizwicklung 3 und aus einem in koaxialer Anord­ nung zur Heizwicklung 3 eingebetteten Termoelement 4. The tubular heater shown consists of a metal jacket 1 , a heating coil 3 embedded in this jacket 1 by means of compressed insulating material 2 and a thermocouple 4 embedded in a coaxial arrangement for heating coil 3 .

Die elektrischen Anschlüsse 5 des Termoelements 4 und die An­ schlüsse 6 der Heizwicklung 3 sind an den sich gegenüberliegen­ den Enden des Mantels 1 durch je einen Verschlußstopfen 7 in üblicher Weise aus dem Rohrheizkörper herausgeführt.The electrical connections 5 of the termocouple 4 and the connections 6 to the heating winding 3 are led out at the opposite ends of the jacket 1 by a sealing plug 7 in the usual manner from the tubular heater.

Wie die Fig. 2 zeigt, wird der zunächst gestreckte Rohrheiz­ körper 1-7 haarnadelförmig gebogen. Damit liegen, was in vie­ len Fällen erforderlich ist, die Anschlüsse 6 der Heizwicklung 3 und die Anschlüsse 5 des Termoelements 4 auf derselben Seite des Rohrheizkörpers.As shown in Fig. 2, the initially stretched tubular heater body 1-7 is bent hairpin-shaped. Thus, what is required in vie len cases, the connections 6 of the heating coil 3 and the connections 5 of the thermocouple 4 are on the same side of the tubular heater.

Nun wird der so geformte Rohrheizkörper 1-7 zu einer Wendel 8 gestaltet und kann in dieser Form auf einem entsprechenden Dü­ senkörper befestigt werden. Auch hier liegt der Anschluß 6 der Heizwicklung 3 auf derselben Seite wie der Anschluß 5 des Ter­ moelements 4.Now the tubular heater 1-7 shaped in this way is designed as a coil 8 and can be attached in this form to a corresponding nozzle body. Here, too, is the connection 6 of the heating winding 3 on the same side as the connection 5 of the ter moelements 4th

Der erfindungsgemäße Mantelrohrheizkörper kann im Rahmen die­ ser Erfindung je nach Bedarf variiert und so den technischen Gegebenheiten angepaßt werden. Dies gilt, wie schon erwähnt, vor allem auch hinsichtlich der Wahl des Meßpunktes am Mantel­ heizkörper.The tubular casing heater according to the invention can in the frame This invention varies as needed and so the technical Conditions to be adjusted. As already mentioned, this applies especially with regard to the choice of the measuring point on the jacket radiator.

Claims (1)

Elektrischer Mantelrohrheizkörper mit integriertem Tempera­ turfühler, bei dem die Heizleiterwendel im Mantelrohr haar­ nadelförmig angelegt ist und der Anschluß des Heizleiters an einem Ende des Mantelrohrs und der Anschluß des Temperatur­ fühlers am anderen Ende des Mantelrohrs herausgeführt sind, dadurch gekennzeichnet, daß der Temperaturfühler ein Termoelement (4) ist, dessen Termoschenkel koaxial zum Mantelrohr (1) geführt sind und daß das Mantelrohr (1) selbst wendelförmig gestaltet ist.Electric jacket tube heater with integrated temperature sensor, in which the heating conductor coil is hairpin-shaped in the jacket tube and the connection of the heating conductor at one end of the jacket tube and the connection of the temperature sensor are led out at the other end of the jacket tube, characterized in that the temperature sensor is a termo element ( 4 ), the termine legs are guided coaxially to the jacket tube ( 1 ) and that the jacket tube ( 1 ) is itself designed helically.
DE1997116010 1997-04-17 1997-04-17 Extremely thin, safe, metal-clad electrical heater with integral thermocouple Expired - Lifetime DE19716010C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1997116010 DE19716010C1 (en) 1997-04-17 1997-04-17 Extremely thin, safe, metal-clad electrical heater with integral thermocouple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1997116010 DE19716010C1 (en) 1997-04-17 1997-04-17 Extremely thin, safe, metal-clad electrical heater with integral thermocouple

Publications (1)

Publication Number Publication Date
DE19716010C1 true DE19716010C1 (en) 1998-10-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE1997116010 Expired - Lifetime DE19716010C1 (en) 1997-04-17 1997-04-17 Extremely thin, safe, metal-clad electrical heater with integral thermocouple

Country Status (1)

Country Link
DE (1) DE19716010C1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008016439U1 (en) 2008-12-11 2009-03-12 Türk & Hillinger GmbH Cartridge Heater
US7592572B2 (en) 2005-07-26 2009-09-22 Türk + Hillinger GmbH Compressed cartridge heater
EP2190255A1 (en) * 2008-11-19 2010-05-26 Türk + Hillinger GmbH Electrical tubular heating cartridge
DE102009029251A1 (en) * 2009-09-08 2011-03-24 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance heating body for cooking system of home appliance, comprises heating element, where sensor element is equipped for measuring operating temperature, and heating element and sensor element are separately formed
DE102017207738A1 (en) * 2017-05-08 2018-11-08 Mahle International Gmbh Electric heater

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746838A (en) * 1969-10-24 1973-07-17 Emerson Electric Co Electric heating elements
DE7932598U1 (en) * 1979-11-17 1980-02-28 Tuerk & Hillinger Gmbh & Co, 7200 Tuttlingen ELECTRIC HEATING ELEMENT, IN PARTICULAR FOR PLASTIC SPRAY NOZZLES
DE3343822C1 (en) * 1983-07-09 1985-02-28 Hotset Heizpatronen und Zubehör GmbH, 5880 Lüdenscheid Device for electrical heating and cooling for plastics injection moulding machines or plastics processing machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746838A (en) * 1969-10-24 1973-07-17 Emerson Electric Co Electric heating elements
DE7932598U1 (en) * 1979-11-17 1980-02-28 Tuerk & Hillinger Gmbh & Co, 7200 Tuttlingen ELECTRIC HEATING ELEMENT, IN PARTICULAR FOR PLASTIC SPRAY NOZZLES
DE3343822C1 (en) * 1983-07-09 1985-02-28 Hotset Heizpatronen und Zubehör GmbH, 5880 Lüdenscheid Device for electrical heating and cooling for plastics injection moulding machines or plastics processing machines

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7592572B2 (en) 2005-07-26 2009-09-22 Türk + Hillinger GmbH Compressed cartridge heater
EP2190255A1 (en) * 2008-11-19 2010-05-26 Türk + Hillinger GmbH Electrical tubular heating cartridge
DE202008016439U1 (en) 2008-12-11 2009-03-12 Türk & Hillinger GmbH Cartridge Heater
EP2203027A1 (en) 2008-12-11 2010-06-30 Türk + Hillinger GmbH Heating cartridge
US8426779B2 (en) 2008-12-11 2013-04-23 Türk & Hillinger GmbH Cartridge type heater
DE102009029251A1 (en) * 2009-09-08 2011-03-24 BSH Bosch und Siemens Hausgeräte GmbH Cooking appliance heating body for cooking system of home appliance, comprises heating element, where sensor element is equipped for measuring operating temperature, and heating element and sensor element are separately formed
DE102009029251B4 (en) * 2009-09-08 2015-02-12 BSH Bosch und Siemens Hausgeräte GmbH Gargeräterohrheizkörper
DE102017207738A1 (en) * 2017-05-08 2018-11-08 Mahle International Gmbh Electric heater
US10780762B2 (en) 2017-05-08 2020-09-22 Türk & Hillinger Automotive GmbH Electrical heating device

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8100 Publication of the examined application without publication of unexamined application
D1 Grant (no unexamined application published) patent law 81
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R071 Expiry of right