EP0681737A1 - Extinguishing stack for an arc extinguishing chamber. - Google Patents

Extinguishing stack for an arc extinguishing chamber.

Info

Publication number
EP0681737A1
EP0681737A1 EP94901686A EP94901686A EP0681737A1 EP 0681737 A1 EP0681737 A1 EP 0681737A1 EP 94901686 A EP94901686 A EP 94901686A EP 94901686 A EP94901686 A EP 94901686A EP 0681737 A1 EP0681737 A1 EP 0681737A1
Authority
EP
European Patent Office
Prior art keywords
arc
quenching
extinguishing
holding part
openings
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
EP94901686A
Other languages
German (de)
French (fr)
Other versions
EP0681737B1 (en
Inventor
Alfred Nyzner
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.)
Felten and Guilleaume Austria AG
Original Assignee
Felten and Guilleaume Austria AG
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 Felten and Guilleaume Austria AG filed Critical Felten and Guilleaume Austria AG
Publication of EP0681737A1 publication Critical patent/EP0681737A1/en
Application granted granted Critical
Publication of EP0681737B1 publication Critical patent/EP0681737B1/en
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
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a quenching plate package for an arc quenching chamber for switches, in particular for circuit breakers, consisting of quenching plates arranged in parallel or in a fan shape, a holding part made of insulating material with a U-shaped cross-sectional shape, in which the quenching plates are fixed in their position and the arc outlet openings in its web opposite the arc inlet, which are each arranged between adjacent quenching plates.
  • Quenching plate package for arc quenching chambers have been proposed in the most varied of embodiments and have the purpose of quickly guiding the arc which arises when switching, in particular the arc which arises when circuit breakers are triggered when the contacts are opened, the arc forming between the opening contacts partly blown by the magnetic field of the switching elements, partly by the suction effect of the quenching plate package to the quenching plates, then the hot gases between the quenching plates are cooled and led to the arc outlet openings of the arc quenching chamber and through these further to the blow-off opening of the switch.
  • Extinguishing sheet package for arc quenching chambers also have the task of dividing the arc and thus increasing the arc voltage.
  • a problem with the known quenching plate stack for arc quenching chambers also consists in the fact that after the ionized gases have emerged from the arc exit openings, so-called external flashover occurs between adjacent arc exit openings. Such external flashovers can be prevented by keeping the arc exit openings small. Small arc outlet openings have the disadvantage, however, that they obstruct the gas outlet and are fluidically unfavorable. It has therefore already been proposed to provide the arc outlet openings in the legs of the U-shaped molded part.
  • the invention is based on the object of proposing a quenching plate package for an arc quenching chamber which, without impairing its effect and function, improves the blowing off of the exhaust gases to the blow-off openings of the switch and prevents flashovers.
  • this is achieved in that at least one rib, which separates adjacent arc exit openings from one another, projects outwards from the outside of the web of the U-shaped holding part.
  • the measure according to the invention results in improved flow conditions, so that the arc gases can be more easily controlled and blown off more easily.
  • the at least one rib which projects from the web on the outside of the web according to the invention separates adjacent arc exit openings on the outside of the web, so that the air gap between the arc exit openings of adjacent chambers (between two adjacent quenching plates provided in each case) is increased . Overturns are thus prevented even with larger-sized and therefore aerodynamic arc outlet openings, even though the arc outlet openings are provided in the web of the U-shaped molded part.
  • the at least one rib does not completely surround the light exit openings in the web of the U-shaped molded part. Rather, an embodiment has proven to be advantageous in which it is provided that the rib surrounds the arc exit openings essentially over half its circumference. It is only important that the air gap between adjacent arc exit openings is kept so large that arcing is prevented.
  • a simple and yet effective construction of the quenching plate package according to the invention for an arc quenching chamber results if the rib is formed in a serpentine shape and surrounds opposite areas of adjacent arc exit openings.
  • the invention also extends to an embodiment of the quenching plate package for an arc quenching chamber, in which it is provided that two rows of arc exit openings are provided in the web of the U-shaped holding part. If two ribs are provided in this embodiment, it can be provided according to the invention that one rib runs mirror-symmetrically to the other rib. This results in a total of three channels on the outside of the web of the holding part which has the arc exit openings (one between the ribs and one each between a rib and the adjacent wall of the housing of the switch, into which the quenching plate package for the arc quenching chamber is inserted). , through which the exhaust gases are discharged without the risk of external flashovers.
  • the available passage cross-section of the outlet openings for the arc or the arc gases when blowing off from the quenching plate package for the arc quenching chamber can be increased without the risk of outside flashovers if, according to a proposal of the invention, it is provided that the arc outlet openings are designed as elongated holes, the longer extent of which runs parallel to the quenching plates.
  • the at least one rib is preferably formed in one piece with the web of the U-shaped holding part.
  • a simple construction of the quenching plate package according to the invention for the arc quenching chamber results if it is provided that the quenching plates on their longitudinal edges carry strip-shaped projections which protrude from them and lie in the plane of the quenching plates and which extend into correspondingly shaped openings engage in the legs of the U-shaped holding part.
  • An embodiment has proven itself in which it is provided that protrusions carried by the extinguishing plates protrude into all openings provided in the legs of the U-shaped holding part.
  • FIG. 1 is a side view of a first embodiment
  • Fig. 3 is a section along the line III-III in Fig. 1 and
  • Fig. 4 partially seen the arc quenching chamber of Fig. 1 from above of Fig. 1.
  • the quenching plate packet 1 for an arc quenching chamber has a plurality of quenching plates 2 which are arranged parallel to one another. Each quenching plate 2 has an essentially V-shaped slot 3 on the arc entry side.
  • each baffle plate 2 has two strip-shaped projections 5 and 6 on both longitudinal side edges, which protrude into corresponding opening positions. Solutions 7 and 8 are used in the legs 9 and 10 of the holding part 4. Apart from the openings 7 and 8 which are filled by the projections 5 and 6 of the extinguishing plates 2 and are therefore essentially closed, the holding part 4 has no openings in its legs 9 and 10.
  • arc exit openings 14 arranged in two rows 12 and 13 are provided in the web 11 of the holding part 4. 4, the arc exit openings 14 have the shape of elongated holes, the longer extension of which is aligned parallel to the quenching plates 2.
  • two ribs 15 and 16 are provided, which, as also shown in FIG. 4, run in a serpentine shape and surround each of the arc exit openings 14 essentially over half their circumference. 4 also shows that the ribs 15 and 16 are arranged mirror-symmetrically to the longitudinal center plane 17 of the quenching plate stack for an arc quenching chamber.
  • serpentine ribs 15 and 16 which protrude from the outside of the web 11 of the holding part 4 and partially surround the arc exit openings 14, ribs of a different shape can also be provided.
  • ribs are conceivable that are ring-shaped or partially ring-shaped. It is only essential that the air gap between adjacent arc exit openings is increased by the rib or the ribs.
  • the invention can be represented as follows, for example:
  • a quenching plate packet 1 for an arc quenching chamber consists of several quenching plates 2, which are inserted in a U-shaped holding part 4 made of insulating material.
  • Arc outlet openings 14 are provided in the web 11 of the holding part 4 opposite the arc inlet.
  • the web 11 carries on its outside two serpentine ribs 15, 16, which enlarge the air gap between adjacent arcing outlet openings 14. This prevents outside flashovers, although the arc outlet openings 14 can be dimensioned so large that the outflow of the ionized arc gases from the quenching plate packet 1 for an arc quenching chamber is not impeded.
  • a total of three channels for the gas flow are formed by the ribs 15, 16 together with the walls of the housing in which the quenching plate packet 1 is accommodated. The outflow of the arc gases is thereby further promoted.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Toys (AREA)
  • Vacuum Packaging (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Basic Packing Technique (AREA)

Abstract

An extinguishing plate stack (1) for an arc extinguishing chamber has several extinguishing plates set into a U-shaped holding part (4) made of an insulating material. Arc outlets (14) are provided in the web of the holding part (4) opposite to the entrance of the arc. The web carries on its outer side two sinuous ribs (15, 16) which increase the air gap between adjacent arc outlets (14). Outer arcing is thus avoided, although the arc outlets (14) may be large enough for the ionised arc gases to flow freely out of the extinguishing plate stack (1). Together with the walls of the housing, in which the extinguishing plate stack (1) is accommodated, the ribs (15, 16) form three gas flow channels, making it even easier for the arc gases to flow out.

Description

Löschblechpaket für eine LichtbogenlöschkammerQuenching plate package for an arc quenching chamber
Die Erfindung betrifft ein Löschblechpaket für eine Lichtbo¬ genlöschkammer für Schalter, insbesondere für Leitungs¬ schutzschalter, bestehend aus parallel oder fächerförmig an¬ geordneten Löschblechen, einem Halteteil aus Isolierstoff mit U-förmiger Querschnittsform, in dem die Löschbleche in ihrer Lage fixiert eingesetzt sind und der in seinem dem Lichtbogen¬ eintritt gegenüberliegenden Steg Lichtbogenaustrittsöffnungen, die jeweils zwischen benachbarten Löschblechen angeordnet sind, aufweist.The invention relates to a quenching plate package for an arc quenching chamber for switches, in particular for circuit breakers, consisting of quenching plates arranged in parallel or in a fan shape, a holding part made of insulating material with a U-shaped cross-sectional shape, in which the quenching plates are fixed in their position and the arc outlet openings in its web opposite the arc inlet, which are each arranged between adjacent quenching plates.
Löschblechpaket für Lichtbogenlöschkammern sind in den ver¬ schiedensten Ausführungsformen vorgeschlagen worden und haben den Zweck, den beim Schalten, insbesondere den beim Auslösen von Leitungsschutzschaltern beim Öffnen der Kontakte entste¬ henden Lichtbogen rasch von den Kontaktstücken wegzuführen, wobei der sich zwischen den öffnenden Kontakten bildende Lichtbogen teils durch das magnetische Feld der Schaltglieder, teils aber durch die Saugwirkung des Löschblechpaketes zu den Löschblechen hingeblasen, dann die heißen Gase zwischen den Löschblechen gekühlt und zu den Lichtbogenaustrittsöffnungen der Lichtbogenlöschkammer und durch diese weiter zu der Ab¬ blasöffnung des Schalters geführt werden.Quenching plate package for arc quenching chambers have been proposed in the most varied of embodiments and have the purpose of quickly guiding the arc which arises when switching, in particular the arc which arises when circuit breakers are triggered when the contacts are opened, the arc forming between the opening contacts partly blown by the magnetic field of the switching elements, partly by the suction effect of the quenching plate package to the quenching plates, then the hot gases between the quenching plates are cooled and led to the arc outlet openings of the arc quenching chamber and through these further to the blow-off opening of the switch.
Löschblechpaket für Lichtbogenlöschkammern haben auch die Aufgabe, den Lichtbogen zu unterteilen und so die Lichtbogen- Spannung zu erhöhen.Extinguishing sheet package for arc quenching chambers also have the task of dividing the arc and thus increasing the arc voltage.
Ein Problem bei den bekannten Löschblechpaket für Lichtbogen¬ löschkammern besteht auch darin, daß nach dem Austritt der ionisierten Gase aus den Lichtbogenaustrittsöffnungen soge- nannte Außenüberschlage zwischen benachbarten Lichtbogenaust¬ rittsöffnungen auftreten. An sich können solche Außenüber¬ schläge verhindert werden, indem die Lichtbogenaustrittsöff- nungen klein gehalten werden. Kleine Lichtbogenaustrittsöff- nungen haben aber den Nachteil, daß sie den Gasaustritt behin- dem und strömungstechnisch ungünstig sind. Es ist daher schon vorgeschlagen worden, die Lichtbogenaus¬ trittsöffnungen in den Schenkeln des U-förmigen Formteils vorzusehen.A problem with the known quenching plate stack for arc quenching chambers also consists in the fact that after the ionized gases have emerged from the arc exit openings, so-called external flashover occurs between adjacent arc exit openings. Such external flashovers can be prevented by keeping the arc exit openings small. Small arc outlet openings have the disadvantage, however, that they obstruct the gas outlet and are fluidically unfavorable. It has therefore already been proposed to provide the arc outlet openings in the legs of the U-shaped molded part.
Ein Beispiel für ein Löschblechpaket für eine Lichtbogenlösch- kammer ist in der AT-B-343 212 beschrieben. Bei dieser bekann¬ ten Lichtbogenlöschkaπuner sind die Lichtbogenaustrittsöffnun¬ gen ausschließlich in den Schenkeln des die Löschbleche hal¬ tenden U-förmigen Halteteils aus Isolierstoff vorgesehen. Bei dieser Ausführungsform ergeben sich aber insbesondere bei schmal gebauten Schaltern strömungstechnische Schwierigkeiten beim Abblasen der Abgase aus der Lichtbogenlöschkammer zu den Abblasöffnungen im Gehäuse des Schalters.An example of a quenching plate package for an arc quenching chamber is described in AT-B-343 212. In this known arc quenching chamber, the arc exit openings are provided exclusively in the legs of the U-shaped holding part made of insulating material and holding the quenching plates. In this embodiment, however, there are flow-related difficulties, in particular in the case of narrow switches, in blowing off the exhaust gases from the arc quenching chamber to the blow-off openings in the housing of the switch.
Der Erfindung liegt die Aufgabe zugrunde, ein Löschblechpaket für eine Lichtbogenlöschkammer vorzuschlagen, die ohne ihre Wirkung und Funktion zu beeinträchtigen, das Abblasen der Abgase zu den Abblasöffnungen des Schalters verbessert und Außenüberschläge verhindert.The invention is based on the object of proposing a quenching plate package for an arc quenching chamber which, without impairing its effect and function, improves the blowing off of the exhaust gases to the blow-off openings of the switch and prevents flashovers.
Erfindungsgemäß wird dies dadurch erreicht, daß von der Außen¬ seite des Steges des U-förmigen Halteteils wenigstens eine Rippe, die benachbarte Lichtbogenaustrittsöffnungen vonein¬ ander trennt, nach außen absteht.According to the invention, this is achieved in that at least one rib, which separates adjacent arc exit openings from one another, projects outwards from the outside of the web of the U-shaped holding part.
Durch die erfindungsgemäße Maßnahme ergeben sich im Gegensatz zum Löschblechpaket für eine Lichtbogenlöschkammer der AT-B- 343 212 verbesserte Strömungsverhältnisse, so daß die Licht¬ bogengase leichter beherrscht und besser abgeblasen werden können.In contrast to the quenching plate package for an arc quenching chamber of AT-B-343 212, the measure according to the invention results in improved flow conditions, so that the arc gases can be more easily controlled and blown off more easily.
Durch die gemäß der Erfindung an der Außenseite des Steges von diesem abstehend vorgesehene, wenigstens eine Rippe werden benachbarte Lichtbogenaustrittsöffnungen an der Außenseite des Steges voneinander getrennt, so daß die Luftstrecke zwischen den Lichtbogenaustrittsöffnungen benachbarter (zwischen je¬ weils zwei benachbarten Löschblechen vorgesehener Kammern) vergrößert ist. Außenüberschläge werden so auch bei größer dimensionierten und daher strömungsgünstigen Lichtbogenaust- rittsöffnungen verhindert, obwohl die Lichtbogenaustrittsöff- nungen im Steg des U-förmigen Formteiles vorgesehen sind.The at least one rib which projects from the web on the outside of the web according to the invention separates adjacent arc exit openings on the outside of the web, so that the air gap between the arc exit openings of adjacent chambers (between two adjacent quenching plates provided in each case) is increased . Overturns are thus prevented even with larger-sized and therefore aerodynamic arc outlet openings, even though the arc outlet openings are provided in the web of the U-shaped molded part.
Dabei ist es von Vorteil, wenn die wenigstens eine Rippe die Lichtaustrittsöffnungen im Steg des U-förmigen Formteils nicht zur Gänze umgibt. Vielmehr hat sich eine Ausführungsform als vorteilhaft erwiesen, bei der vorgesehen ist, daß die Rippe die Lichtbogenaustrittsöffnungen im wesentlichen über ihren halben Umfang umgibt. Wesentlich ist nur, daß die Luftstrecke zwischen benachbarten Lichtbogenaustrittsöffnungen so groß gehalten wird, daß Außenüberschläge hintangehalten werden.It is advantageous if the at least one rib does not completely surround the light exit openings in the web of the U-shaped molded part. Rather, an embodiment has proven to be advantageous in which it is provided that the rib surrounds the arc exit openings essentially over half its circumference. It is only important that the air gap between adjacent arc exit openings is kept so large that arcing is prevented.
Eine einfache und dennoch wirksame Konstruktion des erfin¬ dungsgemäßen Löschblechpaket für eine Lichtbogenlöschkammer ergibt sich, wenn die Rippe schlangenlinienförmig ausgebildet ist und jeweils gegenüberliegende Bereiche benachbarter Licht¬ bogenaustrittsöffnungen umgibt.A simple and yet effective construction of the quenching plate package according to the invention for an arc quenching chamber results if the rib is formed in a serpentine shape and surrounds opposite areas of adjacent arc exit openings.
Die Erfindung erstreckt sich auch auf eine Ausführungsform des Löschblechpaketes für eine Lichtbogenlöschkammer, bei dem vor- gesehen ist, daß im Steg des U-förmigen Halteteils zwei Reihen von Lichtbogenaustrittsöffnungen vorgesehen sind. Wenn bei dieser Ausführungsform zwei Rippen vorgesehen sind, kann gemäß der Erfindung vorgesehen sein, daß die eine Rippe zur anderen Rippe spiegelsymmetrisch verläuft. Dadurch ergeben sich an der Außenseite des die Lichtbogenaustrittsöffnungen aufweisenden Steges des Halteteils insgesamt drei Kanäle (einer zwischen den Rippen und je einer zwischen einer Rippe und der benach¬ barten Wand des Gehäuses des Schalters, in das das Löschblech¬ paket für die Lichtbogenlöschkammer eingesetzt ist) , durch welche die Abgase ohne die Gefahr von Außenüberschlägen abge¬ leitet werden.The invention also extends to an embodiment of the quenching plate package for an arc quenching chamber, in which it is provided that two rows of arc exit openings are provided in the web of the U-shaped holding part. If two ribs are provided in this embodiment, it can be provided according to the invention that one rib runs mirror-symmetrically to the other rib. This results in a total of three channels on the outside of the web of the holding part which has the arc exit openings (one between the ribs and one each between a rib and the adjacent wall of the housing of the switch, into which the quenching plate package for the arc quenching chamber is inserted). , through which the exhaust gases are discharged without the risk of external flashovers.
Der verfügbare Durchtrittsguerschnitt der Austrittsöffnungen für den Lichtbogen bzw. die Lichtbogengase beim Abblasen aus dem Löschblechpaket für die Lichtbogenlöschkammer läßt sich ohne Gefahr von Außenüberschlägen vergrößern, wenn gemäß einem Vorschlag der Erfindung vorgesehen ist, daß die Lichtbogen¬ austrittsöffnungen als Langlöcher ausgebildet sind, deren längere Erstreckung parallel zu den Löschblechen verläuft. Bei allen vorgenannten Ausführungsformen der Erfindung ist die wenigstens eine Rippe bevorzugt mit dem Steg des U-förmigen Halteteils einstückig ausgebildet.The available passage cross-section of the outlet openings for the arc or the arc gases when blowing off from the quenching plate package for the arc quenching chamber can be increased without the risk of outside flashovers if, according to a proposal of the invention, it is provided that the arc outlet openings are designed as elongated holes, the longer extent of which runs parallel to the quenching plates. In all of the aforementioned embodiments of the invention, the at least one rib is preferably formed in one piece with the web of the U-shaped holding part.
Eine einfache Konstruktion des erfindungsgemäßen Löschblechpa- ketes für die Lichtbogenlöschkammer ergibt sich, wenn vorgese¬ hen ist, daß die Löschbleche an ihren Längsrändern von diesen abstehende und in der Ebene der Löschbleche liegende, leisten¬ förmige Vorsprünge tragen, die in entsprechend geformte Öff- nungen in den Schenkeln des U-förmigen Halteteils eingreifen. Dabei bewährt sich eine Ausführungsform, bei der vorgesehen ist, daß in alle in den Schenkeln des U-förmigen Halteteils vorgesehene Öffnungen von den Löschblechen getragene Vorsprün- ge ragen.A simple construction of the quenching plate package according to the invention for the arc quenching chamber results if it is provided that the quenching plates on their longitudinal edges carry strip-shaped projections which protrude from them and lie in the plane of the quenching plates and which extend into correspondingly shaped openings engage in the legs of the U-shaped holding part. An embodiment has proven itself in which it is provided that protrusions carried by the extinguishing plates protrude into all openings provided in the legs of the U-shaped holding part.
Weitere Vorteile und Einzelheiten des erfindungsgemäßen Lösch- blechpaketes für eine Lichtbogenlöschkammer ergeben sich aus der nachstehenden Beschreibung, in der ein Ausführungsbeispiel des Löschblechpaketes für das Löschblechpaket für die Licht- bogenlöschkammer gemäß der Erfindung dargestellt sind. Es zeigt:Further advantages and details of the quenching plate package according to the invention for an arc quenching chamber result from the following description, in which an exemplary embodiment of the quenching plate package for the quenching plate package for the arc quenching chamber according to the invention is shown. It shows:
Fig. 1 in Seitenansicht eine erste Ausführungsform,1 is a side view of a first embodiment,
Fig. 2 einen Schnitt längs der Linie II-II in Fig. 1,2 shows a section along the line II-II in FIG. 1,
Fig. 3 einen Schnitt längs der Linie III-III in Fig. 1 undFig. 3 is a section along the line III-III in Fig. 1 and
Fig. 4 teilweise die Lichtbogenlöschkammer von Fig. 1 von oben der Fig. 1 aus gesehen.Fig. 4 partially seen the arc quenching chamber of Fig. 1 from above of Fig. 1.
Das Löschblechpaket 1 für eine Lichtbogenlöschkammer besitzt mehrere Löschbleche 2, die zueinander parallel angeordnet sind. Jedes Löschblech 2 besitzt an der Lichtbogeneintritts- seite einen im wesentlichen V-förmigen Schlitz 3.The quenching plate packet 1 for an arc quenching chamber has a plurality of quenching plates 2 which are arranged parallel to one another. Each quenching plate 2 has an essentially V-shaped slot 3 on the arc entry side.
Die Löschbleche 2 werden von einem im Querschnitt im wesent¬ lichen U-förmigen Halteteil 4 aus Isolierstoff gehalten. Hiezu besitzt jedes Löschblech 2 an beiden Längsseitenrändern zwei leistenförmige Vorsprünge 5 und 6, die in entsprechende Öff- nungen 7 und 8 in den Schenkeln 9 und 10 des Halteteils 4 eingesetzt sind. Abgesehen von den durch die Vorsprünge 5 und 6 der Löschbleche 2 ausgefüllten und damit im wesentlichen verschlossenen Öffnungen 7 und 8 besitzt der Halteteil 4 in seinen Schenkeln 9 und 10 keine Öffnungen.The extinguishing plates 2 are held by a cross-sectionally substantially U-shaped holding part 4 made of insulating material. For this purpose, each baffle plate 2 has two strip-shaped projections 5 and 6 on both longitudinal side edges, which protrude into corresponding opening positions. Solutions 7 and 8 are used in the legs 9 and 10 of the holding part 4. Apart from the openings 7 and 8 which are filled by the projections 5 and 6 of the extinguishing plates 2 and are therefore essentially closed, the holding part 4 has no openings in its legs 9 and 10.
Im Steg 11 des Halteteils 4 sind im gezeigten Ausführungsbei- spiel in zwei Reihen 12 und 13 angeordnet Lichtbogenaustritts¬ öffnungen 14 vorgesehen. Die Lichtbogenaustrittsöffnungen 14 besitzen, wie dies insbesondere Fig. 4 zeigt, die Form von Langlöchern, deren längere Erstreckung parallel zu den Lösch¬ blechen 2 ausgerichtet ist.In the exemplary embodiment shown, arc exit openings 14 arranged in two rows 12 and 13 are provided in the web 11 of the holding part 4. 4, the arc exit openings 14 have the shape of elongated holes, the longer extension of which is aligned parallel to the quenching plates 2.
An der Außenseite des Steges 11 des Halteteils 4 sind zwei Rippen 15 und 16 vorgesehen, die wie ebenfalls Fig. 4 zeigt, schlangenlinienförmig verlaufen und jede der Lichtbogenaust¬ rittsöffnungen 14 im wesentlichen über deren halben Umfang umgeben. Fig. 4 zeigt auch, daß die Rippen 15 und 16 zur Längsmittelebene 17 des Löschblechpaketes für eine Lichtbogen- löschkammer spiegelsymmetrisch angeordnet sind.On the outside of the web 11 of the holding part 4, two ribs 15 and 16 are provided, which, as also shown in FIG. 4, run in a serpentine shape and surround each of the arc exit openings 14 essentially over half their circumference. 4 also shows that the ribs 15 and 16 are arranged mirror-symmetrically to the longitudinal center plane 17 of the quenching plate stack for an arc quenching chamber.
Anstelle der schlangenlinienförmig ausgebildeten Rippen 15 und 16, die von der Außenseite des Steges 11 des Halteteils 4 ab¬ stehen und die Lichtbogenaustrittsöffnungen 14 teilweise umge- ben, können auch anders geformte Rippen vorgesehen sein.Instead of the serpentine ribs 15 and 16, which protrude from the outside of the web 11 of the holding part 4 and partially surround the arc exit openings 14, ribs of a different shape can also be provided.
Beispielsweise sind Rippen denkbar, die ringförmig oder teil¬ ringförmig ausgebildet sind. Wesentlich ist bloß, daß die Luftstrecke zwischen einander benachbarten Lichtbogenaus- trittsöffnungen durch die Rippe oder die Rippen vergrößert wird.For example, ribs are conceivable that are ring-shaped or partially ring-shaped. It is only essential that the air gap between adjacent arc exit openings is increased by the rib or the ribs.
Zusammenfassend kann die Erfindung beispielsweise wie folgt dargestellt werden:In summary, the invention can be represented as follows, for example:
Ein Löschblechpaket 1 für eine Lichtbogenlöschkammer besteht aus mehreren Löschblechen 2, die in einem U-förmigen Halteteil 4 aus Isolierwerkstoff eingesetzt sind. In dem dem Lichtbogen¬ eintritt gegenüberliegenden Steg 11 des Halteteils 4 sind Lichtbogenaustrittsöffnungen 14 vorgesehen. Der Steg 11 trägt an seiner Außenseite zwei schlangenlinienförmige Rippen 15, 16, welche die Luftstrecke zwischen benachbarten Lichtboge¬ naustrittsöffnungen 14 vergrößern. So werden Außenüberschläge verhindert, obwohl die Lichtbogenaustrittsöffnungen 14 so groß dimensioniert werden können, daß das Abströmen der ionisierten Lichtbogengase aus dem Löschblechpaket 1 für eine Lichtbogen¬ löschkammer nicht behindert wird. Durch die Rippen 15, 16 werden zusammen mit den Wänden des Gehäuses, in dem das Lösch¬ blechpaket 1 untergebracht ist, insgesamt drei Kanäle für die Gasströmung gebildet. Dadurch wird das Abströmen der Licht¬ bogengase weiter begünstigt. A quenching plate packet 1 for an arc quenching chamber consists of several quenching plates 2, which are inserted in a U-shaped holding part 4 made of insulating material. Arc outlet openings 14 are provided in the web 11 of the holding part 4 opposite the arc inlet. The web 11 carries on its outside two serpentine ribs 15, 16, which enlarge the air gap between adjacent arcing outlet openings 14. This prevents outside flashovers, although the arc outlet openings 14 can be dimensioned so large that the outflow of the ionized arc gases from the quenching plate packet 1 for an arc quenching chamber is not impeded. A total of three channels for the gas flow are formed by the ribs 15, 16 together with the walls of the housing in which the quenching plate packet 1 is accommodated. The outflow of the arc gases is thereby further promoted.

Claims

Patentansprüche: Claims:
1. Löschblechpaket für eine Lichtbogenlöschkammer ( 1 ) für Schalter, insbesondere für Leitungsschutzschalter, beste- hend aus parallel oder fächerförmig angeordneten Lösch¬ blechen (2) , einem Halteteil (4) aus Isolierstoff mit U- förmiger Querschnittsform, in dem die Löschbleche (2) in ihrer Lage fixiert eingesetzt sind und der in seinem dem Lichtbogeneintritt gegenüberliegenden Steg (11) Lichtboge- naustrittsöffnungen (14), die jeweils zwischen benachbar¬ ten Löschblechen (2) angeordnet sind, aufweist, dadurch gekennzeichnet, daß von der Außenseite des Steges (11) des U-förmigen Halteteils (4) wenigstens eine Rippe (15, 16), die benachbarte Lichtbogenaustrittsöffnungen (14) vonein- ander trennt, nach außen absteht.1. quenching plate package for an arc quenching chamber (1) for switches, in particular for circuit breakers, consisting of quenching plates (2) arranged in parallel or in a fan shape, a holding part (4) made of insulating material with a U-shaped cross-sectional shape, in which the quenching plates (2 ) are fixed in their position and the arc outlet openings (14) in its web (11) opposite the arc inlet, which are each arranged between adjacent quenching plates (2), characterized in that from the outside of the web ( 11) of the U-shaped holding part (4), at least one rib (15, 16), which separates adjacent arc exit openings (14) from one another, projects outwards.
2. Löschblechpaket für eine Lichtbogenlöschkammer nach An¬ spruch 1, dadurch gekennzeichnet, daß die Rippe (15, 16) die Lichtbogenaustrittsöffnungen (14) im wesentlichen über ihren halben Umfang umgibt.2. quenching plate package for an arc quenching chamber according to claim 1, characterized in that the rib (15, 16) surrounds the arc exit openings (14) substantially over half its circumference.
3. Löschblechpaket für eine Lichtbogenlöschkammer nach An¬ spruch 1 oder 2, dadurch gekennzeichnet, daß die Rippe (15 oder 16) schlangenlinienförmig ausgebildet ist und jeweils gegenüberliegende Bereiche benachbarter Lichtbogenaust¬ rittsöffnungen (14) umgibt.3. Extinguishing sheet package for an arc extinguishing chamber according to claim 1 or 2, characterized in that the rib (15 or 16) is formed in a serpentine shape and surrounds opposite areas of adjacent arcing openings (14).
4. Löschblechpaket für eine Lichtbogenlöschkammer nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß im Steg (11) des U-förmigen Halteteils zwei Reihen (12, 13) von Lichtbogenaustrittsöffnungen (14) vorgesehen sind.4. Extinguishing sheet package for an arc extinguishing chamber according to one of claims 1 to 3, characterized in that two rows (12, 13) of arc exit openings (14) are provided in the web (11) of the U-shaped holding part.
5. Löschblechpaket für eine Lichtbogenlöschkammer nach An¬ spruch 4, dadurch gekennzeichnet, daß zwei Rippen (15, 16) vorgesehen sind, und daß die eine Rippe (15) zur anderen Rippe (16) spiegelsymmetrisch verläuft.5. quenching plate package for an arc quenching chamber according to claim 4, characterized in that two ribs (15, 16) are provided and that one rib (15) to the other rib (16) is mirror-symmetrical.
6. Löschblechpaket für eine Lichtbogenlöschkammer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Lichtbogenaustrittsöffnungen (14) als Langlöcher ausgebil- det sind, deren längere Erstreckung parallel zu den Lösch¬ blechen (2) verläuft.6. quenching plate package for an arc quenching chamber according to one of claims 1 to 5, characterized in that the arc outlet openings (14) are formed as elongated holes. det, the longer extension of which runs parallel to the extinguishing plates (2).
7. Löschblechpaket für eine Lichtbogenlöschkammer nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die7. quenching plate package for an arc quenching chamber according to one of claims 1 to 6, characterized in that the
Rippe (15, 16) mit dem Steg (11) einstückig verbunden ist.Rib (15, 16) with the web (11) is integrally connected.
8. Löschblechpaket für eine Lichtbogenlöschkammer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Löschbleche (2) an ihren Längsrändern von diesen abstehen¬ de und in der Ebene der Löschbleche (2) liegende, leisten¬ förmige Vorsprünge (5, 6) tragen, die in entsprechend ge¬ formte Öffnungen (7, 8) in den Schenkeln (9, 10) des U- förmigen Halteteils (4) eingreifen.8. quenching plate package for an arc quenching chamber according to one of claims 1 to 7, characterized in that the quenching plates (2) projecting at their longitudinal edges from these and in the plane of the quenching plates (2) lying, strip-shaped projections (5, 6 ) which engage in correspondingly shaped openings (7, 8) in the legs (9, 10) of the U-shaped holding part (4).
9. Löschblechpaket für eine Lichtbogenlöschkammer nach An¬ spruch 8, dadurch gekennzeichnet, daß in alle in den Schenkeln (9, 10) des U-förmigen Halteteils (4) vorgesehe¬ ne Öffnungen (7, 8) von den Löschblechen (2) getragene VorSprünge (5, 6) ragen. 9. Extinguishing sheet package for an arc extinguishing chamber according to claim 8, characterized in that in all of the legs (9, 10) of the U-shaped holding part (4) provided with openings (7, 8) by the extinguishing sheets (2) Protrusions (5, 6) protrude.
EP94901686A 1993-01-27 1993-12-13 Extinguishing stack for an arc extinguishing chamber Expired - Lifetime EP0681737B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0013493A AT404770B (en) 1993-01-27 1993-01-27 ARC EXTINGUISHING CHAMBER FOR SWITCHES
AT134/93 1993-01-27
PCT/AT1993/000193 WO1994017539A1 (en) 1993-01-27 1993-12-13 Extinguishing stack for an arc extinguishing chamber

Publications (2)

Publication Number Publication Date
EP0681737A1 true EP0681737A1 (en) 1995-11-15
EP0681737B1 EP0681737B1 (en) 1997-02-12

Family

ID=3482432

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94901686A Expired - Lifetime EP0681737B1 (en) 1993-01-27 1993-12-13 Extinguishing stack for an arc extinguishing chamber

Country Status (12)

Country Link
EP (1) EP0681737B1 (en)
AT (2) AT404770B (en)
AU (1) AU674719B2 (en)
DE (1) DE59305471D1 (en)
DK (1) DK0681737T3 (en)
ES (1) ES2100665T3 (en)
FI (1) FI108681B (en)
GR (1) GR3022624T3 (en)
HR (1) HRP940039B1 (en)
NO (1) NO307279B1 (en)
SI (1) SI9300669B (en)
WO (1) WO1994017539A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014002902B4 (en) * 2014-02-27 2019-08-01 Schaltbau Gmbh Extinguishing chamber for a contactor and a contactor for extinguishing electric arcs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3110790A (en) * 1961-05-09 1963-11-12 Gen Electric Electric circuit interrupter
DE3042168A1 (en) * 1980-11-08 1982-06-16 Brown, Boveri & Cie Ag, 6800 Mannheim CIRCUIT BREAKER
HU187905B (en) * 1983-05-18 1986-03-28 Villamosipari Kutato Intezet,Hu Arc extinguishing construction for electric switches
DE3630447A1 (en) * 1986-09-06 1988-03-10 Bbc Brown Boveri & Cie ARC EXTINGUISHING DEVICE

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9417539A1 *

Also Published As

Publication number Publication date
ES2100665T3 (en) 1997-06-16
DE59305471D1 (en) 1997-03-27
SI9300669A (en) 1994-09-30
NO952868D0 (en) 1995-07-19
AU5618794A (en) 1994-08-15
GR3022624T3 (en) 1997-05-31
EP0681737B1 (en) 1997-02-12
AT404770B (en) 1999-02-25
WO1994017539A1 (en) 1994-08-04
ATA13493A (en) 1998-06-15
DK0681737T3 (en) 1997-03-10
SI9300669B (en) 2002-02-28
HRP940039A2 (en) 1996-08-31
ATE148958T1 (en) 1997-02-15
NO952868L (en) 1995-07-19
FI953417A (en) 1995-07-12
FI108681B (en) 2002-02-28
AU674719B2 (en) 1997-01-09
FI953417A0 (en) 1995-07-12
HRP940039B1 (en) 2000-04-30
NO307279B1 (en) 2000-03-06

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