EP0617836A1 - Automatic cutout with an arc extinguishing chamber. - Google Patents

Automatic cutout with an arc extinguishing chamber.

Info

Publication number
EP0617836A1
EP0617836A1 EP92923693A EP92923693A EP0617836A1 EP 0617836 A1 EP0617836 A1 EP 0617836A1 EP 92923693 A EP92923693 A EP 92923693A EP 92923693 A EP92923693 A EP 92923693A EP 0617836 A1 EP0617836 A1 EP 0617836A1
Authority
EP
European Patent Office
Prior art keywords
walls
blow
chamber
switch according
housing
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
EP92923693A
Other languages
German (de)
French (fr)
Other versions
EP0617836B1 (en
Inventor
Werner Ostermann
Klaus Liesenjohann
Juergen Feuerhake
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of EP0617836A1 publication Critical patent/EP0617836A1/en
Application granted granted Critical
Publication of EP0617836B1 publication Critical patent/EP0617836B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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 circuit breaker with one arranged within its housing
  • Arc chamber which receives the stack of quenching sheets, which merges behind a slotted door and into a blow-out chamber which is open to the outside and which, in turn, has integrally formed walls on two half-shells of the housing transversely to the main flow direction.
  • Miniature circuit breakers with such an arc chamber are known (DE-PS 1 238 538, DE-OS 29 49 012).
  • the partition wall which is arranged directly behind the extinguishing plates and which lies closely against their end edges is provided with slots, each in the gap between two
  • Arc gases often have such a large one
  • Switching gas discharge channel has been proposed. This is subdivided into an expansion space adjoining the quenching plate package and downstream flow channels, a further expansion space and an outlet channel. In this arrangement there is a behind the quenching plates considerable risk of reignition, if not on
  • Cover part forming outlet channels made of extinguishing gas-dispensing material is provided, which complements the circuit breaker and must be attached to the housing from the outside in a separate operation. Such an extra part means a not inconsiderable additional effort for a switchgear manufactured in large series.
  • the invention is based, with one
  • Arc gases have to flow around several walls that are staggered in a labyrinthine manner on their way from the stack of quenching plates, due to the longer length
  • Arc gases are directed into different directions by means of blow-out nozzles, so that a concentrated jet does not occur in one direction, but rather there is a strong scattering of the arc gases. Because the specially designed blow-out chamber when pressing the housing parts can be produced in a practically cost-neutral manner, the solution according to the invention results in a strong reduction of the escaping arcing gases with little effort - and this without significant impairment of
  • Fig. 1 shows a circuit breaker in a simplified
  • FIG. 2 is a partial section along the line II - II (Fig. 1),
  • Fig. 3 is a partial section along the line III - III
  • Fig. 4 schematically shows a special embodiment of the
  • Fig. 5 is a view of the side wall from the direction of
  • Fig. 6 shows a section along the line VI - VI (Fig. 5).
  • Narrow construction has a made of insulating material
  • Housing (1) which consists of two half shells (1a, 1b)
  • an arc chamber (2) is arranged in the base area of the housing, which is largely filled by a stack of quenching plates (3).
  • the individual quenching plates (3a) are included their left-hand end edges on a partition (2a) which is formed on the housing and separates the arc chamber (2) from a blow-out chamber (4).
  • a partition (2a) which is formed on the housing and separates the arc chamber (2) from a blow-out chamber (4).
  • interlocking walls (4a) - as is particularly indicated in Fig. 2 - before they reach the outside through a blow-out opening (4b).
  • the walls are molded directly onto the two half-shells (1a, 1b) of the housing,
  • thermoset which preferably consists of a thermoset.
  • thermoset which preferably consists of a thermoset.
  • the walls (4a) rise and at least from the bottom of the half-shells to at least over the middle
  • Pin (4a ') chosen so that despite high arc cooling and a low emission of conductive
  • FIGS. 1 to 3 can still be optimized with the essential features of the blow-out chambers according to the invention, as shown in the exemplary embodiment according to FIGS. 4 to 6.
  • blow-out chamber (4 ') shown in FIG. 4 only as a section of the circuit breaker has behind the
  • Walls (4a) instead of a blow-out opening, a plurality of blow-out nozzles (4c). These are arranged on both sides of the parting line between the two half-shells (1a, 1b) and offset in such a meandering manner that the actual openings in the outer side wall (1d) each in
  • Blow-out nozzles are not formed in the side wall (1d) at right angles, but rather at an angle of approximately 45 ° to the direction of the walls (4a).
  • the exhaust nozzles (4c) in the two half-shells are mutually offset by approximately 90 °, as shown in FIGS. 4 and 6
  • blow-out chamber can be divided into two half-spaces of equal size by a partially inclined rib (4d). 1, the rib (4d) is approximately in the middle of the
  • Partition (2a) attached and runs at the same oblique angle as the individual slots (2b). This ensures good guidance of the arc gases flowing out at an angle from the arc chamber into the blow-out chamber and prevents the tendency to re-ignition directly behind the extinguishing plates.
  • the rib (4d) is just like that Walls (4a) and the other elements of the blow-out chamber each form part of the two half-shells of the housing and thus represent a cost-neutral solution.

Landscapes

  • Circuit Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

The automatic cutout switch has inside its housing (1) an arc chamber (2) containing a stack of quenching plates (3) which communicates behind a slotted (2b) separating wall (2a) with an outwardly open blow-off chamber (4). In order to reduce considerably the ejection of hot conductive arc gases and also largely to prevent the exit of flames from the housing at breaking capacity, the blow-off chamber (4), consisting of two half shells (1a, 1b) of the housing (1), has several staggered walls (4a) transversely to the main direction of flow, like a labyrinthe which considerably lengthen the gas flow path. In addition, the walls (4a) have, on their facing upper sides substantially parallel to the separating plane of the half-shell (1a, 1b), comb-like projecting pegs (4a') which cool the arc gases and cause them to eddy. The walls (4a) are preferably arranged at least partially to inter-engage at a short distance from each other alternately at each half-section (1a, 1b).

Description

Be s c h r e i b u n g : Description :
"Leitungsschutzschalter mit einer Lichtbogenkammer" "Miniature circuit breaker with an arc chamber"
Die Erfindung betrifft einen Leitungsschutzschalter mit einer innerhalb seines Gehäuses angeordneten, einen The invention relates to a circuit breaker with one arranged within its housing
Löschblechstapel aufnehmenden Lichtbogenkammer, die hinter einer mit Schlitzen versehenen T r e n n w a n d in eine nach außen hin offene Ausblaskammer übergeht, die ihrerseits an zwei Halbschalen des Gehäuses quer zur Hauptströmungsrichtung angeformte Wände aufweist. Arc chamber, which receives the stack of quenching sheets, which merges behind a slotted door and into a blow-out chamber which is open to the outside and which, in turn, has integrally formed walls on two half-shells of the housing transversely to the main flow direction.
Leitungsschutzschalter mit einer solchen Lichtbogenkammer sind bekannt (DE-PS 1 238 538, DE-OS 29 49 012). Dabei ist die unmittelbar hinter den Löschblechen angeordnete, eng an deren Stirnkanten anliegende Trennwand mit Schlitzen versehen, die jeweils in der Lücke zwischen zwei Miniature circuit breakers with such an arc chamber are known (DE-PS 1 238 538, DE-OS 29 49 012). In this case, the partition wall which is arranged directly behind the extinguishing plates and which lies closely against their end edges is provided with slots, each in the gap between two
Löschblechen ausgespart sind. So können die bei einer Kurzschluß-Abschaltung explosionsartig mit hohem Druck entstehenden Lichtbogengase durch die Trennwand in eine dahinter befindliche Ausblaskammer gelangen, in der sie meist von einer Querwand umgelenkt werden, bevor sie schließlich über eine Wandöffnung nach außen entweichen. Bei modernen Leitungsschutzschaltern mit ihren hohen Extinguishing plates are left out. Thus, in the event of a short-circuit switch-off, arcing gases which develop explosively at high pressure can pass through the dividing wall into a blow-out chamber located behind them, in which they are usually deflected by a transverse wall before finally escaping through a wall opening to the outside. With modern circuit breakers with their high
Schaltleistungen haben allerdings die austretenden Switching capacities, however, have the emerging
Lichtbogengase oftmals noch solch einen großen Arc gases often have such a large one
Energieinhalt, daß die Gefahr des Flammenaustritts im Energy content that the risk of flame escape in the
Bereich des Gehäusesockels besteht. Area of the housing base.
Um die damit verbundenen nachteiligen Folgen auf To address the adverse consequences associated with it
benachbarte Betriebsmittel zu verhindern, ist in der Preventing neighboring resources is in the
DE-OS 37 05 216 ein besonders gestalteter DE-OS 37 05 216 a specially designed
SchaItgasableitkanal vorgeschlagen worden. Dieser ist in einen an das Löschblechpaket angrenzenden Expansionsraum sowie in diesem nachgeschaltete Strömungskanäle, einen weiteren Expansionsräum und einen Auslaßkanal untertei lt. Bei dieser Anordnung besteht hinter den Löschblechen eine erhebliche Rückzündungsgefahr, sofern nicht am Switching gas discharge channel has been proposed. This is subdivided into an expansion space adjoining the quenching plate package and downstream flow channels, a further expansion space and an outlet channel. In this arrangement there is a behind the quenching plates considerable risk of reignition, if not on
Löschb Lechpaket selbst noch zusätzliche Maßnahmen  Löschb Lechpaket itself additional measures
ergriffen werden. Außerdem ist ein besonderes, die  be taken. It is also a special one
Auslaßkanäle bildendes Abdeckteil aus Löschgas abgebendem Material vorgesehen, welches den Leitungsschutzschalter ergänzt und in einem separaten Arbeitsgang von außen am Gehäuse befestigt werden muß. Ein solches Extrateil bedeutet für ein in Großserie hergestelltes Schaltgerät einen nicht unerheblichen Mehraufwand.  Cover part forming outlet channels made of extinguishing gas-dispensing material is provided, which complements the circuit breaker and must be attached to the housing from the outside in a separate operation. Such an extra part means a not inconsiderable additional effort for a switchgear manufactured in large series.
Der Erfindung Liegt die Aufgabe zugrunde, bei einem The invention is based, with one
Leitungsschutzschalter der eingangs genannten Art die Miniature circuit breakers of the type mentioned at the beginning
Lichtbogenkammer im Ausblasbereich mit möglichst geringenArc chamber in the blow-out area with the smallest possible
Zusatzkosten so zu gestalten, daß der Ausstoß von To design additional costs so that the emission of
leitenden, heißen Lichtbogengasen erheblich vermindert wird, um so auch bei hoher Schaltleistung einen  conductive, hot arc gases is significantly reduced, so even with high switching power
Flammenaustritt aus dem Gehäuse weitgehend auszuschließen.  Flame escapes from the housing to a large extent.
Diese Aufgabe wird durch einen Lei tungssc h ut zs c h a lte r mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. This object is achieved by a line protection with the characterizing features of claim 1.
Weiterbildungen und vorteilhafte Ausgestaltungen der  Further developments and advantageous refinements of
Erfindung sind in den Unteransprüchen angegeben.  Invention are specified in the subclaims.
Die Erfindung ist insofern vorteilhaft, als die The invention is advantageous in that
Lichtbogengase auf ihrem Weg vom Löschblechstapel ins Freie mehrere labyrinthartig versetzt angeordnete Wände umströmen müssen und dabei aufgrund des längeren  Arc gases have to flow around several walls that are staggered in a labyrinthine manner on their way from the stack of quenching plates, due to the longer length
Strömungsweges sowie der vergrößerten Oberfläche erheblich besser gekühlt werden. Außerdem werden sie durch kammartig vorstehende Zapfen auf den Oberseiten der Wände zusätzlich so verwirbelt, daß dadurch ihr Ionisationsgrad verringert wird. Letztlich werden die noch austretenden Flow path and the enlarged surface can be cooled significantly better. In addition, they are swirled by comb-like protruding pins on the tops of the walls so that their degree of ionization is reduced. Ultimately, those are still emerging
Lichtbogengase durch Ausblasdüsen in unterschiedliche Richtungswinkel gelenkt, damit kein konzentrierter Strahl in einer Richtung auftritt, sondern vielmehr eine starke Streuung der Lichtbogengase erfolgt. Da die besonders gestaltete Ausblaskammer beim Pressen der Gehäuseteile sich praktisch kostenneutral mit herstellen läßt, ergibt die erfindungsgemäße Lösung mit geringem Aufwand eine starke Reduzierung der austretenden Lichtbogengase - und dies ohne wesentliche Beeinträchtigung der Arc gases are directed into different directions by means of blow-out nozzles, so that a concentrated jet does not occur in one direction, but rather there is a strong scattering of the arc gases. Because the specially designed blow-out chamber when pressing the housing parts can be produced in a practically cost-neutral manner, the solution according to the invention results in a strong reduction of the escaping arcing gases with little effort - and this without significant impairment of
Liehtbogenlaufgeschwindigkeit in der eigentlichen Sheet speed in the actual
Lichtbogenkammer. Der letztlich noch verbleibende, geringe Ausstoß leitender Lichtbogengase schließt eine Arc chamber. The remaining low emission of conductive arc gases excludes one
Überschlagsgefahr zu in der Nähe des Leitungsschutzschalters befindlichen spannungsführenden Teilen praktisch aus. There is practically no risk of overturning of live parts in the vicinity of the circuit breaker.
Anhand der Zeichnung ist die Erfindung nachstehend näher erläutert. The invention is explained in more detail below with reference to the drawing.
Es zeigt It shows
Fig. 1 einen Leitungsschutzschalter in einer vereinfachten  Fig. 1 shows a circuit breaker in a simplified
Ansicht mit teilweise geöffnetem Gehäuse bzw. einem Teilschnitt im Bereich von Lichtbogenkammer und Ausblaskammer gemäß der Linie I - I (Fig. 2), View with partially open housing or a partial section in the area of the arc chamber and blow-out chamber according to the line I - I (Fig. 2),
Fig. 2 einen Teilschnitt gemäß der Linie II - II (Fig. 1),2 is a partial section along the line II - II (Fig. 1),
Fig. 3 einen Teilschnitt gemäß der Linie III - III Fig. 3 is a partial section along the line III - III
(Fig. 1);  (Fig. 1);
Fig. 4 schematisch eine besondere Ausgestaltung der  Fig. 4 schematically shows a special embodiment of the
Ausblaskämmer in einer Teilansicht, vergleichbar mit Fig. 1 gemäß der Schnittlinie IV - IV (Fig. 5), Blow-out chambers in a partial view, comparable to FIG. 1 according to the section line IV - IV (FIG. 5),
Fig. 5 eine Ansicht auf die Seitenwand aus Richtung des Fig. 5 is a view of the side wall from the direction of
Pfeiles V (Fig. 4),  Arrow V (Fig. 4),
Fig. 6 einen Schnitt gemäß der Linie VI - VI (Fig. 5) .  Fig. 6 shows a section along the line VI - VI (Fig. 5).
Der vereinfacht dargestellte Leitungsschutzschalter in The simplified circuit breaker shown in
Schmalbauweise hat ein aus Isolierstoff hergestelltes Narrow construction has a made of insulating material
Gehäuse (1), welches aus zwei Halbschalen (1a, 1b) Housing (1), which consists of two half shells (1a, 1b)
zusammengesetzt ist, die ihrerseits nicht gezeigte Schalt- und Auslösemechanismen sowie die zugehörigen Anschlußmittel räumlich umschließen. Des weiteren ist im Sockelbereich des Gehäuses eine Lichtbogenkammer (2) angeordnet, die größtenteils von einem Löschblechstapel (3) ausgefüllt ist. Die einzelnen Löschbleche (3a) Liegen dabei mit ihren linksseitigen Stirnkanten an einer Trennwand (2a) an, die am Gehäuse ausgebildet ist und die Lichtbogenkammer (2) von einer Ausblaskammer (4) trennt. In der Trennwand sind mehrere Schlitze (2b) jeweils zwischen den einzelnen is composed, which in turn enclose switching and triggering mechanisms, not shown, and the associated connection means. Furthermore, an arc chamber (2) is arranged in the base area of the housing, which is largely filled by a stack of quenching plates (3). The individual quenching plates (3a) are included their left-hand end edges on a partition (2a) which is formed on the housing and separates the arc chamber (2) from a blow-out chamber (4). In the partition there are several slots (2b) between each
Löschblechen ausgespart, so daß beim Abschaltvorgang entstehende Lichtbogengase durch die Schlitze hindurch in die Ausb Laskammer (4) entweichen können. Hingegen Läuft der an einer lediglich angedeuteten Kontaktstelle (5) insbesondere bei einer Kurzschluß-Abschaltung entstehende Schaltlichtbogen auf bekannte Art mit seinen Fußpunkten auf Lichtbogenlaufsehienen (3b) in den Löschblechstapel ein und wird dort gelöscht.  Extinguishing plates cut out so that arcing gases generated during the shutdown process can escape through the slots into the expansion chamber (4). On the other hand, the switching arc which arises at a merely indicated contact point (5), in particular in the event of a short-circuit switch-off, enters the quenching sheet stack in a known manner with its base points on arcing paths (3b) and is extinguished there.
Die unter hohem Druck durch die Schlitze (2b ) e n t w e i c h e nd e n i on i s i e rt en Li c h t b o g e n g a s e ums t rö me n auf ihrem Weg durch die Ausblaskammer (4) mehrere, im Wechsel versetzt The high pressure through the slots (2b) e n t w e i c h e n i on i s i e rt en Li c h t b o g e n g a s e around them, alternating, offset in the blow-out chamber (4)
ineinandergreifende Wände (4a) - wie besonders in Fig. 2 angedeutet ist - bevor sie durch eine Ausblasöffnung (4b) ins Freie gelangen. Die Wände sind jeweils an den beiden Halbschalen (1a, 1b) des Gehäuses direkt angeformt,  interlocking walls (4a) - as is particularly indicated in Fig. 2 - before they reach the outside through a blow-out opening (4b). The walls are molded directly onto the two half-shells (1a, 1b) of the housing,
welches vorzugsweise aus einem Duroplast besteht. Auf ihren jeweils zueinanderweisenden Oberseiten sind die which preferably consists of a thermoset. On their tops facing each other are the
Wände mit einer Vielzahl von kammartig vorstehenden Walls with a variety of comb-like protrusions
Zapfen (4a') versehen, die in Verbindung mit den jeweils dazwischen befindlichen Einschnitten für eine kräftige Provide pins (4a ') in connection with the incisions between them for a strong
Verwirbelung der Lichtbogengase sorgen. Diese werden Whirl the arc gases. These will
außerdem durch die größeren Wandoberflachen zusätzlich gekühlt, bevor sie durch die Ausblasöffnung (4b) ins additionally cooled by the larger wall surfaces before entering the exhaust opening (4b)
Freie strömen. Die Wände (4a) steigen j e we i l s vom Grund der Halbschalen zumindest bis über die Mitte auf und Flock free. The walls (4a) rise and at least from the bottom of the half-shells to at least over the middle
haben keinen allzu großen gegenseitigen Abstand, wie are not too far apart, like
insbesondere aus Fig. 2 ersichtlich ist. Dabei können drei oder vier Wände je nach dem vorhandenen Platz 2 can be seen in particular. There can be three or four walls depending on the space available
unterhalb des Klemmenbereiches (1c) angeordnet sein. be arranged below the terminal area (1c).
Daneben sind die Abstände zwischen den einzelnen Next to it are the distances between each
Wänden (4a) und auch die Größe und Anordnung der Walls (4a) and also the size and arrangement of the
Zapfen (4a') so gewählt, daß trotz hoher Lichtbogenkühlung und eines lediglich geringen Ausstoßes von leitenden Pin (4a ') chosen so that despite high arc cooling and a low emission of conductive
Lichtbogengasen die Laufgeschwindigkeit des Lichtbogens von der Kontaktstelle (5) in das Löschblechpaket (3) nicht beeinträchtigt wird. Dabei kann die in den Fig. 1 bis 3 gezeigte Grundform mit den wesentlichen erfindungsgemäßen Merkmalen der Ausblaskämmer noch optimiert werden, wie es im Ausführungsbeispiel nach Fig. 4 bis 6 dargestellt ist. Arc gases the running speed of the arc from the contact point (5) in the quenching plate package (3) is not affected. The basic shape shown in FIGS. 1 to 3 can still be optimized with the essential features of the blow-out chambers according to the invention, as shown in the exemplary embodiment according to FIGS. 4 to 6.
Die in Fig. 4 nur als Ausschnitt des Leitungsschutzschalters gezeigte Ausblaskämmer (4') hat dabei hinter den The blow-out chamber (4 ') shown in FIG. 4 only as a section of the circuit breaker has behind the
Wänden (4a) statt einer Ausblasöffnung eine Vielzahl von Ausblasdüsen (4c). Diese sind beiderseits der Trennfuge zwischen den beiden Halbschalen (1a, 1b) angeordnet und zwar derart maanderförmig versetzt, daß die eigentlichen Öffnungen in der äußeren Seitenwand (1d) jeweils im Walls (4a) instead of a blow-out opening, a plurality of blow-out nozzles (4c). These are arranged on both sides of the parting line between the two half-shells (1a, 1b) and offset in such a meandering manner that the actual openings in the outer side wall (1d) each in
Wechsel ausgespart sind (Fig. 5). Zusätzlich sind die Bills are omitted (Fig. 5). In addition, they are
Ausblasdüsen in der Seitenwand (1d) nicht rechtwinklig eingeformt, sondern jeweils unter einem Winkel von etwa 45° schräg zur Richtung der Wände (4a). Zugleich sind die AusbLasdüsen (4c) in den beiden Halbschalen gegenseitig etwa um 90° versetzt, wie aus Fig. 4 bzw. Fig. 6 Blow-out nozzles are not formed in the side wall (1d) at right angles, but rather at an angle of approximately 45 ° to the direction of the walls (4a). At the same time, the exhaust nozzles (4c) in the two half-shells are mutually offset by approximately 90 °, as shown in FIGS. 4 and 6
hervorgeht. Durch diese unterschiedliche Richtung d e r emerges. Through this different direction of the
Au s b l a s d ü s e n e r f o l g t e i n e s t a r k e S t r e u u n g d e r l e t z t lich noch austretenden Lichtbogengase, so daß eine Ex s b l a s d e s e n e f o l g t e i n e s t a r k e S t r e u u n g d e r l t e currently escaping arc gases, so that a
Überschlagsgefahr zu in der Nähe des Leitungsschutzschalters befindlichen spannungsführenden Teilen vermieden wird. Risk of arcing over to live parts in the vicinity of the circuit breaker is avoided.
Des weiteren kann die Ausblaskammer durch eine teilweise schräg verlaufende Rippe (4d) etwa in zwei gleich große Halbräume unterteilt sein. Wie insbesondere die Fig. 1 zeigt, ist die Rippe (4d) etwa in der Mitte der In addition, the blow-out chamber can be divided into two half-spaces of equal size by a partially inclined rib (4d). 1, the rib (4d) is approximately in the middle of the
Trennwand (2a) angesetzt und verläuft unter dem gleichen schrägen Winkel wie die einzelnen Schlitze (2b). Damit wird eine gute Führung der schräg aus der Lichtbogenkammer ausströmenden Lichtbogengase in die Ausblaskammer erreicht und die Rückzündungsneigung direkt hinter den Löschblechen ausgeschlossen. Die Rippe (4d) ist ebenso wie die Wände (4a) und die weiteren Elemente der Ausblaskammer jeweils Bestandteil der beiden Halbschalen des Gehäuses und stellt somit eine kostenneutrale Lösung dar. Partition (2a) attached and runs at the same oblique angle as the individual slots (2b). This ensures good guidance of the arc gases flowing out at an angle from the arc chamber into the blow-out chamber and prevents the tendency to re-ignition directly behind the extinguishing plates. The rib (4d) is just like that Walls (4a) and the other elements of the blow-out chamber each form part of the two half-shells of the housing and thus represent a cost-neutral solution.

Claims

Ansprüche: Expectations:
1. Leitungsschutzschalter mit einer innerhalb seines  1. Circuit breaker with one inside its
Gehäuses angeordneten, einen Löschblechstapel aufnehmenden Lichtbogenkammer, die hinter einer mit Schlitzen Arcing chamber arranged, receiving a stack of quenching sheet, behind one with slots
versehenen Trennwand in eine nach außen hin offene provided partition into an open to the outside
Ausblaskammer übergeht, die ihrerseits an zwei Halbschalen des Gehäuses quer zur Hauptströmungsrichtung angeformte Wände aufweist, dadurch gekennzeichnet, daß die Blow-out chamber merges, which in turn has integrally formed walls on two half-shells of the housing transversely to the main flow direction, characterized in that the
Ausblaskammer (4, 4') mit mehreren. Labyrinthartig Blow-out chamber (4, 4 ') with several. Maze-like
versetzt angeordneten, den Gasströmungsweg erheblich verlängernden Wänden (4a) versehen ist, welche auf ihren zueinanderweisenden, etwa parallel zur Trennebene der Halbschalen (1a, 1b) befindlichen Oberseiten kammartig vorstehende, eine Verwirbelung und zusätzliche Kühlung der Lichtbogengase bewirkende Zapfen (4a ') aufweisen. staggered walls (4a), which considerably lengthen the gas flow path, are provided, which have cones (4a ') on their mutually facing tops, which are roughly parallel to the parting plane of the half-shells (1a, 1b) and cause swirling and additional cooling of the arc gases.
2. Schalter nach Anspruch 1, dadurch gekennzeichnet, daß die Wände (4a) im Wechsel an jeder Halbschale (1a, 1b) und mit geringem gegenseitigen Abstand zumindest teilweise ineinandergreifend angeordnet sind. 2. Switch according to claim 1, characterized in that the walls (4a) are arranged alternately on each half shell (1a, 1b) and with a small mutual distance at least partially interlocking.
3. Schalter nach Anspruch 1 und 2, dadurch gekennzeichnet, daß nur die Wände (4a) einer Halbschale da) Zapfen (4a') auf ihrer Oberseite aufweisen, während die Wände (4a) der gegenüberliegenden Halbschale (1b) g l a t t f l ä c h i g 3. Switch according to claim 1 and 2, characterized in that only the walls (4a) of a half-shell da) have pins (4a ') on their top, while the walls (4a) of the opposite half-shell (1b) g l a t t f l a c h i g
ausgebildet sind. are trained.
4. Schalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Ausblaskammer (4, 4') mittels einer etwa von der Mitte der Trennwand (2a) ausgehenden und teilweise schräg zu den Wänden (4a) verlaufenden 4. Switch according to one of claims 1 to 3, characterized in that the blow-out chamber (4, 4 ') by means of an approximately from the center of the partition (2a) and partially inclined to the walls (4a)
Rippe (4d) in nahezu zwei gleich große, voneinander getrennte Halbräume unterteilt ist. Rib (4d) is divided into almost two equal, separate half-spaces.
5. Schalter nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Ausblaskammer (4') an ihrer nach außen hin offenen Seitenwand (1d) mit schräg zur Richtung der Wände (4a) angeordneten Ausblasdüsen (4c) versehen ist. 5. Switch according to one of claims 1 to 4, characterized in that the blow-out chamber (4 ') on its outwardly open side wall (1d) with oblique to Blow nozzles (4c) arranged in the direction of the walls (4a) is provided.
6. Schalter nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Ausblasdüsen (4c) in den beiden Halbschalen (1a, 1b) unterschiedliche Richtungswinkel von bis zu 90° aufweisen und im Querschnitt mäanderförmig versetzt angeordnet sind. 6. Switch according to one of claims 1 to 5, characterized in that the blow-out nozzles (4c) in the two half-shells (1a, 1b) have different directional angles of up to 90 ° and are arranged meandering in cross-section.
EP92923693A 1991-12-21 1992-12-04 Automatic cutout with an arc extinguishing chamber Expired - Lifetime EP0617836B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9115905U DE9115905U1 (en) 1991-12-21 1991-12-21 Circuit breaker with an arc chamber
DE9115905U 1991-12-21
PCT/DE1992/001006 WO1993013538A1 (en) 1991-12-21 1992-12-04 Automatic cutout with an arc extinguishing chamber

Publications (2)

Publication Number Publication Date
EP0617836A1 true EP0617836A1 (en) 1994-10-05
EP0617836B1 EP0617836B1 (en) 1995-11-08

Family

ID=6874506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92923693A Expired - Lifetime EP0617836B1 (en) 1991-12-21 1992-12-04 Automatic cutout with an arc extinguishing chamber

Country Status (8)

Country Link
EP (1) EP0617836B1 (en)
AT (1) ATE130121T1 (en)
CZ (1) CZ283892B6 (en)
DE (2) DE9115905U1 (en)
ES (1) ES2079898T3 (en)
HU (1) HU213360B (en)
PL (1) PL169428B1 (en)
WO (1) WO1993013538A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1463075A2 (en) 2003-03-22 2004-09-29 ABB PATENT GmbH Stack of arc extinguishing blades for an electrical switch, in particular for an electrical circuit breaker
CZ301531B6 (en) * 2001-03-20 2010-04-07 Moeller Gebäudeautomation KG Housing having two half-shells for a switching device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4326922C1 (en) * 1993-08-11 1994-11-17 Kloeckner Moeller Gmbh Arc chamber for electrical switchgear
DE4410108C2 (en) † 1994-03-21 1996-08-22 Siemens Ag Arc quenching chamber with three barriers for the passage of arc gases
AT405112B (en) * 1997-02-12 1999-05-25 Felten & Guilleaume Ag Oester OVERVOLTAGE DEVICE
US5861596A (en) * 1997-04-01 1999-01-19 Eaton Corporation Dual baffle apparatus for electrical switching device
FR2823904B1 (en) * 2001-04-19 2003-06-06 Schneider Electric Ind Sa MONOBLOCK DIFFUSER FOR ELECTRICAL SWITCHING APPARATUS
DE102005015401B4 (en) * 2005-01-10 2014-03-20 Dehn + Söhne Gmbh + Co. Kg Surge arrester with two diverging electrodes and a spark gap acting between the electrodes
DE102005007301A1 (en) * 2005-02-17 2006-08-24 Abb Patent Gmbh Electrical installation device, e.g. for use with line safety switch, has exhaust opening at broader side of housing wall to discharge gas escaping from arc extinguisher, and baffle preventing re-entering of gas into arc antechamber
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 (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445190A (en) * 1944-12-20 1948-07-13 Gen Electric Electric circuit breaker
US2942086A (en) * 1957-03-06 1960-06-21 Allis Chalmers Mfg Co Chimney cooler for air circuit breakers
US3005892A (en) * 1957-03-19 1961-10-24 Ite Circuit Breaker Ltd Arc chute design for circuit breakers
FR1417232A (en) * 1964-09-25 1965-11-12 Cem Comp Electro Mec Arc extinguisher cage for DC and AC switching devices
FR1480661A (en) * 1965-05-21 1967-08-07
US3621169A (en) * 1970-04-20 1971-11-16 Gen Electric Electric circuit interrupter with novel arc gas discharge muffle assembly
DE7607341U1 (en) * 1976-03-10 1976-08-12 Siemens Ag, 1000 Berlin Und 8000 Muenchen Circuit breaker
US4075446A (en) * 1976-07-15 1978-02-21 Heinemann Electric Company Circuit breaker arc venting screen
DE7924748U1 (en) * 1979-08-31 1980-11-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Housing for line-up installation devices
DE2949012C2 (en) * 1979-12-06 1984-03-22 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Arc chamber of a circuit breaker
DE3307062C2 (en) * 1983-03-01 1985-06-20 Christian Geyer GmbH & Co, 8500 Nürnberg Arc chamber
DE3440212A1 (en) * 1984-10-10 1986-04-17 BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau EXHAUST GAS SWITCH
FR2575861B1 (en) * 1985-01-07 1987-01-16 Merlin Gerin MINIATURE ELECTRIC CIRCUIT BREAKER WITH ARC FORMING CHAMBER
DE3541514A1 (en) * 1985-11-21 1987-05-27 Siemens Ag Arc extinguishing chamber having an attachment for further cooling of emerging gases
DE3619241C2 (en) * 1986-06-07 1994-07-21 Kloeckner Moeller Gmbh Extinguishing device for a circuit breaker
DE3705216A1 (en) * 1987-02-19 1988-09-01 Geyer Gmbh & Co Christian Electrical line protection circuit breaker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9313538A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ301531B6 (en) * 2001-03-20 2010-04-07 Moeller Gebäudeautomation KG Housing having two half-shells for a switching device
EP1463075A2 (en) 2003-03-22 2004-09-29 ABB PATENT GmbH Stack of arc extinguishing blades for an electrical switch, in particular for an electrical circuit breaker

Also Published As

Publication number Publication date
PL169428B1 (en) 1996-07-31
DE9115905U1 (en) 1993-04-22
HU9401476D0 (en) 1994-08-29
ATE130121T1 (en) 1995-11-15
WO1993013538A1 (en) 1993-07-08
DE59204283D1 (en) 1995-12-14
HUT67986A (en) 1995-05-29
EP0617836B1 (en) 1995-11-08
CZ283892B6 (en) 1998-07-15
CZ151694A3 (en) 1994-11-16
HU213360B (en) 1997-05-28
ES2079898T3 (en) 1996-01-16

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