EP1041596B1 - Dispositif de déclenchement thermique pour disjoncteur - Google Patents

Dispositif de déclenchement thermique pour disjoncteur Download PDF

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Publication number
EP1041596B1
EP1041596B1 EP00103371A EP00103371A EP1041596B1 EP 1041596 B1 EP1041596 B1 EP 1041596B1 EP 00103371 A EP00103371 A EP 00103371A EP 00103371 A EP00103371 A EP 00103371A EP 1041596 B1 EP1041596 B1 EP 1041596B1
Authority
EP
European Patent Office
Prior art keywords
heating element
triggering device
thermal triggering
thermal
chamber portion
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
EP00103371A
Other languages
German (de)
English (en)
Other versions
EP1041596A2 (fr
EP1041596A3 (fr
Inventor
Bernd Seubert
Heiko Urban
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.)
Heinrich Kopp GmbH and Co KG
Original Assignee
Heinrich Kopp GmbH and Co KG
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 Heinrich Kopp GmbH and Co KG filed Critical Heinrich Kopp GmbH and Co KG
Publication of EP1041596A2 publication Critical patent/EP1041596A2/fr
Publication of EP1041596A3 publication Critical patent/EP1041596A3/fr
Application granted granted Critical
Publication of EP1041596B1 publication Critical patent/EP1041596B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a thermal tripping device for circuit breaker.
  • Such a thermal tripping device is already known from the according to Art. 54 (3) and (4) EPC as state of the art novelty EP-A-0 926 694 disclosed.
  • this device is biased against its actuation direction Plunger provided, the electromagnetically at an overcurrent to stop at a section 10a of a pivot lever 10 can be disengaged.
  • a Bimetallic snap disk arrangement is provided, which does not snap on the Actuating tappet, but acts directly on a portion of the actuating lever.
  • thermo tripping device for a circuit breaker known in which an indirect heating for a bimetallic snap disk made by the fact that the originating from an excitation coil heat over the well thermally conductive housing of the support body is transmitted.
  • thermal Tripping device to realize a tripping security in the predetermined limit band,
  • a high production cost in the field of excitation coil is required.
  • the invention is based on the object, a thermal tripping device for a Circuit breaker of the type mentioned in terms of a comparatively lower production costs and a relatively shorter response time.
  • thermo trip device for circuit breaker with a in a support body slidably mounted and out of this by an extended Chamber section above actuating tappet made available the thermally directly by means of one in the chamber section edge held bimetallic snap disk disengaged is, wherein in the chamber portion for thermal activation flat heating element for the bimetallic snap disk arrangement is provided.
  • This is an extremely easy producible and to be designed effective heating by reaches a heating element, which selectively transfers its heat to the Bimetallschnappulation can deliver and thus the response improved.
  • This planar heating element has according to a preferred embodiment the invention, an electrical resistance heater and can be trained thereby extremely small building.
  • the heating element is according to a further embodiment of Invention facing away from the bimetallic snap disk assembly Side arched to match the shape of the bimetallic snap ring assembly to be adjusted as far as possible before triggering.
  • the terminal lugs preferably at the edge of the disk-shaped heating element formed and preferably extend parallel to each other perpendicular to the back of the heating element. hereby arise particularly compact installation conditions for mounting of the heating element in the chamber section, wherein the planar Heating element in the chamber portion preferably by means of held a back chamber wall guided terminal lugs is.
  • the attachment of the heating element can be either in Area of the terminal lugs themselves or by means of a lid edge be provided, which is the chamber portion of the support body closes.
  • this lid also serves as a holder on the edge the Bimetallschnappulation such that the Bimetallschnappulation can perform their snap action.
  • planar heating element is according to another preferred Embodiment of the invention prior to triggering of the bimetallic snap disk arrangement evenly spaced to a good To achieve heat transfer.
  • the planar Heating element with recesses formed such that between the connection lugs symmetrical current paths exist Preferably has the heating element between the terminal lugs at least two perforations, preferably with two kidney-shaped Recesses and one in the middle between the terminal lugs lying transverse web formed with central skillslrittring are.
  • an overcurrent release 10 is shown in section, the used in circuit breakers.
  • the overcurrent release 10 consists of a rotationally symmetrical hollow cylindrical Supporting body 11, to which an enlarged diameter Chamber section 12 connects, the open end by means of a hollow lid 13 is closed.
  • a ram guide core 14 made of iron with a central bore in the region of the axis of symmetry of the support body 11 fixed in which a plunger 15 mounted longitudinally movable is.
  • a plunger 15 mounted longitudinally movable is.
  • At the rear end of the support body 11 is in this one longitudinally movable armature 16 with a bore for receiving the provided at the rear end of the plunger and a fastening spring 17, which with its other end to the ram guide core 14 is supported.
  • a disc Bimetallic snap disk assembly 18 mounted on the edge, the in their midst to a formed on the plunger 15 bead 19 at Snap over to the intended release attacks.
  • a disk-shaped heating element 21 is stationary in attached to the chamber section 12.
  • the planar heating element 21 has edge-shaped terminal lugs 22 and 23, the perpendicular to the back of the heating element to a not extend shown electrical connection. Is omitted in Fig. 1 for simplicity, a field winding through which an electromagnetic triggering by movement of the armature 13th is provided.
  • Fig. 2 are omitting the plunger 15 and the receiving chamber 12 forward final cover 13 the assignment between the bimetallic snap disk assembly 18 and the planar heating element 21 shown schematically. It is also, as shown in Fig. 4 that the flat heating element 21 has a curvature directed to its rear, the 18 prior to release of the bimetallic disc approximately the curvature the bimetallic disc 18 corresponds. The distance a between the Bimetal disc assembly 18 and the planar heating element 21st is almost constant.
  • the sectional view shown in Fig. 2 the planar heater is only schematic and may instead have a design as shown in Fig. 3 in Shown top view.
  • the flat heating element 21 has a circular disk-shaped Design in which the terminal lugs 22 and 23 are formed on the edge side and the surface of the heating element 21st a central passage opening 24 for the plunger 15 with a surrounding ring 25 and laterally extending webs 26 has. Between the terminal lugs 22 and 23 are symmetrical, approximately kidney-shaped recesses 28 and 29 formed.
  • recesses is not on this illustrated embodiment limited but can also be more and different have configured recesses.
  • the Thickness of the flat heating element over its area between the terminal lugs 22 and 23 vary to the respective horrsutzungsbedürfnissen and the desired optimal Surface radiation with the greatest possible radiation effect to wear.
  • the resistance of the heating element is suitable to design the heating power required by the bimetal.
  • the bimetallic snap disc assembly is constantly on the entire area heated and therefore reaches with very little Delay time the temperature of the heating element, thereby triggering is safely reached in the predetermined boundary bands. In this case, the heating element during the triggering process is not moved, and due to the simple construction of the heating element can the assembly with a simple joining realize.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Breakers (AREA)
  • Push-Button Switches (AREA)

Claims (11)

  1. Dispositif de déclenchement thermique pour disjoncteur de protection de ligne, comprenant une tige-poussoir d'actionnement (15), qui est montée de manière centrale et mobile dans un corps formant enveloppe (11) et qui fait saillie hors de celui-ci en passant dans une partie élargie formant logement (12), tandis qu'il est prévu, dans la partie formant logement (12), pour le déclenchement thermique, un élément chauffant (21) mince pour un agencement bilame instantané (18), et dans lequel la tige-poussoir (15) peut être désembrayée de manière thermique à l'aide de l'agencement bilame instantané (18), maintenu au niveau du bord dans la partie formant logement (12).
  2. Dispositif de déclenchement selon la revendication 1,
       caractérisé en ce que l'élément chauffant (21) présente un chauffage par résistance électrique.
  3. Dispositif de déclenchement selon la revendication 1 ou 2,
       caractérisé en ce que l'élément chauffant (21) est arqué vers le côté dirigé à l'opposé de l'agencement bilame instantané (18).
  4. Dispositif de déclenchement selon l'une des revendications précédentes,
       caractérisé en ce que l'élément chauffant (21) mince est réalisé en forme de disque, avec une ouverture centrale (24) pour la tige-poussoir (15), et avec des broches de connexion électrique (22, 23) situées de manière diamétralement opposée et au niveau des bords.
  5. Dispositif de déclenchement selon la revendication 4,
       caractérisé en ce que les broches de connexion (22, 23) sont formées d'un seul tenant sur le bord de l'élément chauffant (21) en forme de disque et s'étendent, de préférence parallèlement l'une à l'autre, et perpendiculairement au côté arrière de l'élément chauffant (21).
  6. Dispositif de déclenchement selon l'une des revendications précédentes,
       caractérisé en ce que l'élément chauffant (21) est fixé dans la partie formant logement (12) à l'aide d'un couvercle creux (13) qui ferme celle-ci.
  7. Dispositif de déclenchement selon l'une des revendications précédentes,
       caractérisé en ce que l'élément chauffant (21) est maintenu dans la partie formant logement (12), de façon à ne pas tourner, à l'aide des broches de connexion (22, 23) qui sont menées à travers une paroi arrière du logement (20).
  8. Dispositif de déclenchement selon l'une des revendications précédentes,
       caractérisé en ce que l'élément chauffant (21) est régulièrement espacé de l'agencement bilame instantané (18) avant le déclenchement de celui-ci.
  9. Dispositif de déclenchement selon l'une des revendications précédentes,
       caractérisé en ce que l'élément chauffant (21) mince est pourvu d'évidements de telle manière qu'il existe, entre ses broches de connexion (22, 23) des chemins symétriques pour le courant.
  10. Dispositif de déclenchement selon la revendication 9,
       caractérisé en ce qu'il est prévu, entre les broches de connexion (22, 23), au moins deux découpures (28, 29) .
  11. Dispositif de déclenchement selon la revendication 10,
       caractérisé en ce que l'élément chauffant (21) est réalisé avec deux évidements (28, 29) réniformes et avec une barrette transversale (26, 27), située au milieu entre les broches de connexion (22, 23) et comportant un anneau central de passage (24, 25).
EP00103371A 1999-03-30 2000-02-23 Dispositif de déclenchement thermique pour disjoncteur Expired - Lifetime EP1041596B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19914479A DE19914479A1 (de) 1999-03-30 1999-03-30 Thermische Auslöseeinrichtung für Leitungsschutzschalter
DE19914479 1999-03-30

Publications (3)

Publication Number Publication Date
EP1041596A2 EP1041596A2 (fr) 2000-10-04
EP1041596A3 EP1041596A3 (fr) 2002-01-16
EP1041596B1 true EP1041596B1 (fr) 2004-01-14

Family

ID=7902991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00103371A Expired - Lifetime EP1041596B1 (fr) 1999-03-30 2000-02-23 Dispositif de déclenchement thermique pour disjoncteur

Country Status (3)

Country Link
EP (1) EP1041596B1 (fr)
AT (1) ATE257975T1 (fr)
DE (2) DE19914479A1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR940002671B1 (ko) * 1990-04-06 1994-03-28 가부시끼가이샤 히다찌세이사꾸쇼 과부하 보호장치
DE4224046C2 (de) * 1992-07-21 1994-07-07 Elektroelement Izlake D D Überstromauslöser für Schutzschaltgeräte
DE4313207A1 (de) * 1993-04-22 1994-10-27 Kopp Heinrich Ag Leitungsschutzschalter
DE4336073A1 (de) * 1993-10-22 1995-04-27 Abb Patent Gmbh Thermischer Überstromauslöser für ein elektrisches Schaltgerät
DE19750875C1 (de) * 1997-11-18 1999-03-18 Hans Arnhold Überstromauslöser für Schutzschalter
FR2772980B1 (fr) * 1997-12-19 2000-01-21 Schneider Electric Sa Dispositif de declenchement magneto-thermique et disjoncteur equipe de ce dispositif

Also Published As

Publication number Publication date
EP1041596A2 (fr) 2000-10-04
ATE257975T1 (de) 2004-01-15
EP1041596A3 (fr) 2002-01-16
DE19914479A1 (de) 2000-10-05
DE50005000D1 (de) 2004-02-19

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