DE3430155A1 - Indirectly heated bimetal - Google Patents
Indirectly heated bimetalInfo
- Publication number
- DE3430155A1 DE3430155A1 DE19843430155 DE3430155A DE3430155A1 DE 3430155 A1 DE3430155 A1 DE 3430155A1 DE 19843430155 DE19843430155 DE 19843430155 DE 3430155 A DE3430155 A DE 3430155A DE 3430155 A1 DE3430155 A1 DE 3430155A1
- Authority
- DE
- Germany
- Prior art keywords
- bimetal
- layer
- indirectly heated
- resistance material
- support body
- 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.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
- H01H71/164—Heating elements
Landscapes
- Contacts (AREA)
- Thermally Actuated Switches (AREA)
- Temperature-Responsive Valves (AREA)
Abstract
Description
Indirekt beheiztes BimetallIndirectly heated bimetal
Die Erfindung bezieht sich auf ein indirekt beheiztes Bimetall aus Tragkörper und isoliert darauf angeordneter Heizwicklung.The invention relates to an indirectly heated bimetal Support body and insulated heating coil arranged on it.
Ublicherweise wird bei indirekt beheizten Bimetallen eine isolierte Heizwicklung aufgebracht. Dabei kann das Bimetall selbst in einem Parallelpfad auch stromdurchflossen sein. Solche Bimetalle biegen sich nach entsprechender Erwärmung aus, so daß sie zeitverzögert einen Kontakt öffnen können und ein Gerät abschalten.Usually an insulated one is used in the case of indirectly heated bimetals Heating coil applied. The bimetal itself can also be used in a parallel path be flowed through. Such bimetals bend after appropriate heating off so that you can open a contact with a time delay and switch off a device.
Sie werden unter anderem in Leitungsschutzschaltern als thermischer Auslöser eingesetzt, der das Schaltschloß entklinkt, oder auch bei Motorschutzschaltern.Among other things, they are used in circuit breakers as thermal Trigger used, which unlatches the key switch, or also with motor protection switches.
Bekanntlich gibt es vielfältige weitere Anwendungsgebiete.As is well known, there are many other areas of application.
Die Isolation besteht üblicherweise aus mehreren Lagen eines temperaturstabilen Werkstoffs - Mineralfaserbänder -, da in der Heizwicklung Temperaturen von 600 bis 700 0C auftreten können. Ein solcher Aufbau ist in der Herstellung sehr aufwendig und dennoch besteht die Gefahr, daß die Isolation beim Aufbringen der Heizwicklung beschädigt wird. Auch das Wickeln und die Einbeziehung der Heizwicklung in einem elektrischen Leitungszug, also das Anschweißen, ist technisch aufwendig.The insulation usually consists of several layers of a temperature-stable Material - mineral fiber tapes - because temperatures in the heating coil range from 600 to 700 0C can occur. Such a structure is very expensive to manufacture and yet there is a risk that the insulation when the heating coil is applied damaged. Also the winding and the inclusion of the heating winding in one electrical cable run, i.e. welding on, is technically complex.
Der Erfindung liegt die Aufgabe zugrunde, ein indirekt beheiztes Bimetall zu entwickeln, das wirtschaftlich auch in großtechnischem Maßstab herzustellen ist und das eine hohe Betriebssicherheit erreicht.The invention is based on the object of an indirectly heated bimetal to develop that can also be produced economically on an industrial scale and that achieves a high level of operational reliability.
Die Lösung der geschilderten Aufgabe besteht nach der Erfindung darin, daß auf dem Tragkörper eine bewegungsnachgiebige Isolierschicht aufgebracht ist und hierauf eine bewegungsnachgiebige Schicht aus Widerstandsmaterial. Die Schicht aus Widerstandsmaterial führt hierbei den Heizstrom. Ein solches Bimetall kann sich leicht bei Erwärmung ausbiegen.The solution to the problem described is, according to the invention, that a flexible insulating layer is applied to the support body and then a flexible layer of resistance material. The layer The heating current is made from resistance material. Such a bimetal can bend slightly when heated.
Die Schicht aus elastischem Widerstandsmaterial kann den Stromdurchgangsweg zwischen den Anschlußstellen für die Bimetallheizung nach Art einer Wicklung verlängern, wenn verlängernde Ausnehmungen ausgebildet sind. Insbesondere können die Ausnehmungen einen Mäanderpfad stehen lassen.The layer of resilient resistance material can provide the current passage extend between the connection points for the bimetal heating in the manner of a winding, when extending recesses are formed. In particular, the recesses leave a meander path.
Ein derartiges indirekt beheiztes Bimetall läßt sich leicht dadurch herstellen, daß auf dem Tragkörper, dem eigentlichen Bimetall, mit einem Plasmabrenner eine 0,05 bis 0,2 mm dicke Schicht aus elektrisch isolierendem Material, wie Al203, aufgespritzt wird. Hierauf kann man dann eine bis zu 0,2 mm Schicht aus Widerstandsmaterial, z. B. Metalloxide, mit dem Plasmabrenner aufbringen, in das durch an sich bekannte Maßnahmen Einschnitte bis auf die Isolierschicht derart eingebracht werden, daß sich zwischen den Anschlußstellen für die Bimetallheizung durch eine Wegverlängerung der gewünschte Widerstandswert ergibt. Man kann hierbei auf die Erfahrungen mit Schichtwiderständen zurückgreifen.Such an indirectly heated bimetal can easily be thereby produce that on the support body, the actual bimetal, with a plasma torch a 0.05 to 0.2 mm thick layer of electrically insulating material such as Al203, is sprayed on. On top of this you can put a layer of up to 0.2 mm of resistance material, z. B. metal oxides, apply with the plasma torch, in the known per se Measures incisions are made up to the insulating layer in such a way that between the connection points for the bimetal heating by a path extension gives the desired resistance value. One can draw on the experience with Use sheet resistors.
Die Erfindung soll anhand eines in der Zeichnung grob schematisch wiedergegebenen Ausführungsbeispiels näher erläutert werden: In Fig. 1 ist ein indirekt beheiztes Bimetall in Aufsicht wiedergegeben.The invention is intended to be roughly schematic based on one in the drawing reproduced embodiment are explained in more detail: In Fig. 1 is an indirect heated bimetal reproduced in supervision.
In Fig. 2 ist das Bimetall nach Fig. 1 in Seitenansicht dargestellt.In Fig. 2, the bimetal according to Fig. 1 is shown in side view.
Das indirekt beheizte Bimetall nach Fig. 1 besteht im wesentlichen aus einem Tragkörper 1, dem eigentlichen Bimetallstreifen, auf dem eine bewegungsnachgiebige Isolierschicht 2 aufgebracht ist. Hierauf ist eine bewegungsnachgiebige Schicht 3 aus Widerstandsmaterial aufgebracht. Im Ausführungsbeispiel sind in der Schicht 3 aus Widerstandsmaterial den Stromdurchgangsweg zwischen den Anschlußstellen 4 für die Bimetallheizung verlängernde Ausnehmungen 6 dadurch ausgebildet, daß die Ausnehmungen einen Mäanderpfad stehen lassen. Die Ausnehmungen 6 können durch Schleifscheiben oder durch Laser-Abtragung eingebracht werden.The indirectly heated bimetal according to FIG. 1 consists essentially from a support body 1, the actual bimetallic strip, on which a flexible one Insulating layer 2 is applied. On top of this is a flexible layer 3 applied from resistance material. In the exemplary embodiment are in the layer 3 made of resistance material, the current passage path between the connection points 4 for the bimetallic heating lengthening recesses 6 formed in that the Let recesses stand a meander path. The recesses 6 can be made by grinding wheels or introduced by laser ablation.
Die Anschlußstellen 4 können als breitflächige Kontaktierungen in an sich bekannter Weise ausgebildet sein. An einem Loch 5 kann das Bimetall in einem Gerät befestigt werden.The connection points 4 can be used as wide-area contacts be designed in a known manner. At a hole 5, the bimetal can be in one Device to be attached.
Ein solches indirekt beheiztes Bimetall kann man herstellen, indem mit einem Plasmabrenner auf einem Tragkörper eine 0,05 bis 0,2 mm dicke Schicht aus Alu03 als Isoliermaterial aufgespritzt wird. Mit dem Plasmabrenner kann dann eine dem gewünschten Widerstandswert entsprechend dünne Schicht aus Widerstandsmaterial bis zu einer Dicke von 0,2 mm aufgetragen werden. Die Dicke wird zweckmäßigerweise so gewählt, daß in Verbindung mit den Strom- durchgangsweg verlängernden Einschnitten eine ausreichende Biegbarkeit des Bimetalls erzielt wird, ohne daß Widerstandsmaterial abspringt. Die den Stromdurchgangsweg verlängernden Ausnehmungen können in an sich bekannter Weise, beispielsweise auch durch Atzvorgänge, eingebracht werden.Such an indirectly heated bimetal can be produced by a 0.05 to 0.2 mm thick layer on a support body with a plasma torch made of Alu03 is sprayed on as an insulating material. With the plasma torch can then a thin layer of resistance material corresponding to the desired resistance value can be applied up to a thickness of 0.2 mm. The thickness is expedient chosen so that in connection with the power lengthening the passage way Sufficient bendability of the bimetal is achieved without Resistance material pops off. The recesses extending the current passage can be introduced in a manner known per se, for example also by etching processes will.
4 Patentansprüche 2 Figuren - Leerseite -4 claims 2 figures - blank page -
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843430155 DE3430155A1 (en) | 1984-08-16 | 1984-08-16 | Indirectly heated bimetal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843430155 DE3430155A1 (en) | 1984-08-16 | 1984-08-16 | Indirectly heated bimetal |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3430155A1 true DE3430155A1 (en) | 1986-02-27 |
Family
ID=6243195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19843430155 Withdrawn DE3430155A1 (en) | 1984-08-16 | 1984-08-16 | Indirectly heated bimetal |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3430155A1 (en) |
Cited By (68)
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---|---|---|---|---|
DE3814617A1 (en) * | 1988-04-29 | 1989-11-09 | Fraunhofer Ges Forschung | GRIP DEVICE |
EP0514931A2 (en) * | 1991-05-24 | 1992-11-25 | Matsushita Electric Industrial Co., Ltd. | A thermal protector |
DE4406377A1 (en) * | 1994-02-26 | 1995-08-31 | Abb Patent Gmbh | Arrangement for heating thermo-bimetallic strip, shape memory alloy or similar |
EP0999934A1 (en) * | 1997-07-15 | 2000-05-17 | Silver Brook Research Pty, Ltd | A thermally actuated ink jet |
US6746105B2 (en) | 1997-07-15 | 2004-06-08 | Silverbrook Research Pty. Ltd. | Thermally actuated ink jet printing mechanism having a series of thermal actuator units |
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US6786570B2 (en) | 1997-07-15 | 2004-09-07 | Silverbrook Research Pty Ltd | Ink supply arrangement for a printing mechanism of a wide format pagewidth inkjet printer |
US6824251B2 (en) | 1997-07-15 | 2004-11-30 | Silverbrook Research Pty Ltd | Micro-electromechanical assembly that incorporates a covering formation for a micro-electromechanical device |
US6880914B2 (en) | 1997-07-15 | 2005-04-19 | Silverbrook Research Pty Ltd | Inkjet pagewidth printer for high volume pagewidth printing |
US6880918B2 (en) | 1997-07-15 | 2005-04-19 | Silverbrook Research Pty Ltd | Micro-electromechanical device that incorporates a motion-transmitting structure |
US6886918B2 (en) | 1998-06-09 | 2005-05-03 | Silverbrook Research Pty Ltd | Ink jet printhead with moveable ejection nozzles |
US6886917B2 (en) | 1998-06-09 | 2005-05-03 | Silverbrook Research Pty Ltd | Inkjet printhead nozzle with ribbed wall actuator |
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US6918707B2 (en) | 1997-07-15 | 2005-07-19 | Silverbrook Research Pty Ltd | Keyboard printer print media transport assembly |
US6927786B2 (en) | 1997-07-15 | 2005-08-09 | Silverbrook Research Pty Ltd | Ink jet nozzle with thermally operable linear expansion actuation mechanism |
US6929352B2 (en) | 1997-07-15 | 2005-08-16 | Silverbrook Research Pty Ltd | Inkjet printhead chip for use with a pulsating pressure ink supply |
US6932459B2 (en) | 1997-07-15 | 2005-08-23 | Silverbrook Research Pty Ltd | Ink jet printhead |
US6935724B2 (en) | 1997-07-15 | 2005-08-30 | Silverbrook Research Pty Ltd | Ink jet nozzle having actuator with anchor positioned between nozzle chamber and actuator connection point |
US6976751B2 (en) | 1997-07-15 | 2005-12-20 | Silverbrook Research Pty Ltd | Motion transmitting structure |
US6986613B2 (en) | 1997-07-15 | 2006-01-17 | Silverbrook Research Pty Ltd | Keyboard |
US7004566B2 (en) | 1997-07-15 | 2006-02-28 | Silverbrook Research Pty Ltd | Inkjet printhead chip that incorporates micro-mechanical lever mechanisms |
US7008041B2 (en) | 1997-07-15 | 2006-03-07 | Silverbrook Research Pty Ltd | Printing mechanism having elongate modular structure |
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US7022250B2 (en) | 1997-07-15 | 2006-04-04 | Silverbrook Research Pty Ltd | Method of fabricating an ink jet printhead chip with differential expansion actuators |
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US7066574B2 (en) | 1997-07-15 | 2006-06-27 | Silverbrook Research Pty Ltd | Micro-electromechanical device having a laminated thermal bend actuator |
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US7207654B2 (en) | 1997-07-15 | 2007-04-24 | Silverbrook Research Pty Ltd | Ink jet with narrow chamber |
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DE102020131645A1 (en) | 2020-11-30 | 2022-06-02 | Stefan Herkert | Bimetal circuit breaker |
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Cited By (253)
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DE3814617A1 (en) * | 1988-04-29 | 1989-11-09 | Fraunhofer Ges Forschung | GRIP DEVICE |
EP0514931A2 (en) * | 1991-05-24 | 1992-11-25 | Matsushita Electric Industrial Co., Ltd. | A thermal protector |
EP0514931A3 (en) * | 1991-05-24 | 1993-10-06 | Matsushita Electric Industrial Co., Ltd. | A thermal protector |
DE4406377A1 (en) * | 1994-02-26 | 1995-08-31 | Abb Patent Gmbh | Arrangement for heating thermo-bimetallic strip, shape memory alloy or similar |
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