EP2573789B1 - Commutateur de puissance doté de canaux d'aération pour une évacuation de chaleur efficace - Google Patents

Commutateur de puissance doté de canaux d'aération pour une évacuation de chaleur efficace Download PDF

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Publication number
EP2573789B1
EP2573789B1 EP11182094.0A EP11182094A EP2573789B1 EP 2573789 B1 EP2573789 B1 EP 2573789B1 EP 11182094 A EP11182094 A EP 11182094A EP 2573789 B1 EP2573789 B1 EP 2573789B1
Authority
EP
European Patent Office
Prior art keywords
housing
circuit breaker
pieces
switching
switching pieces
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.)
Active
Application number
EP11182094.0A
Other languages
German (de)
English (en)
Other versions
EP2573789A1 (fr
Inventor
Alexander Spies
Wolfgang Dr. Feil
Rainer Kreutzer
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.)
Siemens AG
Original Assignee
Siemens 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
Priority to ES11182094.0T priority Critical patent/ES2600962T3/es
Application filed by Siemens AG filed Critical Siemens AG
Priority to EP11182094.0A priority patent/EP2573789B1/fr
Priority to BR112014006760-0A priority patent/BR112014006760B1/pt
Priority to KR1020147004600A priority patent/KR101608685B1/ko
Priority to US14/117,454 priority patent/US9147541B2/en
Priority to CN201280036666.1A priority patent/CN103733294B/zh
Priority to PCT/EP2012/067125 priority patent/WO2013041358A1/fr
Publication of EP2573789A1 publication Critical patent/EP2573789A1/fr
Application granted granted Critical
Publication of EP2573789B1 publication Critical patent/EP2573789B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • 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
    • 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
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/025—Constructional details of housings or casings not concerning the mounting or assembly of the different internal parts
    • 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
    • H01H9/52—Cooling of switch parts
    • 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
    • H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2223/00—Casings
    • H01H2223/002—Casings sealed
    • 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
    • H01H9/02—Bases, casings, or covers
    • H01H9/04—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings
    • H01H9/047—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings provided with venting means

Definitions

  • Circuit breaker with ventilation ducts for efficient heat dissipation The invention relates to a circuit breaker comprising a housing in which a first switching device area, in which a quenching chamber device and a contact slide device are arranged with movable contact pieces, which are positioned opposite to Festschalt Georgiaen, and a second switching device area are arranged, in which a current release group of a short-circuit release and an overload release are arranged.
  • Circuit-breakers in particular low-voltage circuit breakers, are electromagnetic self-switches in the event of a short circuit. Their operation corresponds in principle to the operation of circuit breakers. They are usually equipped with a thermal and a magnetic release and thus have the same structural elements as circuit breakers. However, they are designed for larger rated currents, in addition, the triggers of circuit breakers, unlike the circuit breaker, sometimes separately adjustable. In the low voltage range, the switches are also used as motor protection switches.
  • a circuit breaker with a separate housing in two areas is in EP-A-1471553 disclosed.
  • the task of the circuit breaker is to protect downstream systems and in particular three-phase motors against damage due to overload or short circuit.
  • the circuit breaker should switch off these currents in conjunction with the network protection devices. If there is gas between the two poles, it will be ionized by the flashover with a correspondingly high voltage difference between the poles, forming a self-sustaining gas discharge, also known as an arc. This plasma not only continues to conduct power, but also reduces the life of the device, and at high currents it can even destroy the switch.
  • disconnectors are circuit breakers designed so that the arcing occurring when opening the switch contacts deleted quickly and without damaging the switch and thus the flow of current is interrupted.
  • Circuit-breakers are developed in various sizes.
  • a size is composed of device variants with a meaningful successive build-up nominal current series, the power loss is approximately proportional to the square of the rated current.
  • the device variant with the highest rated current for a given size is determined by the fact that just for this stream the power loss with the appropriate housing volume remains without adverse consequences for the requirements of the switching device over its lifetime. If you want to get even higher rated currents, you develop a larger design. From the customer's point of view, however, it is desirable to increase the maximum rated current within one size even further. To achieve this, measures must be taken to make the removal of heat from the housing volume technically more efficient.
  • the other possibility is to force the removal of the heat generated from the housing by technical measures.
  • active cooling measures by means of a case fan, heat pipe arrangement or even coolant circuits are state of the art.
  • heat sinks In order to be able to dissipate locally generated large amounts of heat and thus, these amounts of heat are distributed by means of heat sinks on large areas.
  • the object of the present invention is to provide a circuit breaker that enables efficient heat dissipation without additional heat sink.
  • this object is achieved by a circuit breaker having a first switching device area, in which a quenching chamber device and a contact slide device are arranged with movable contact pieces, which are positioned opposite to Festschalt Georgiaen, and a second switching device area in which a current release group of a short-circuit release and an overload release arranged are.
  • the invention is characterized in that a continuous ventilation channel is formed within opposing housing walls along the Festschalt Swisse as the first convective air flow through the power switch for heat dissipation.
  • the heat is dissipated, in addition to the device surfaces, via a through-duct with a large cross-section extending from the feed side through the device to the outlet side.
  • the Infeed is at the top
  • the outlet is at the bottom
  • air loss heat directly from some of the main loss of power generators record that is, from contact points and current paths, and transport in the feed side and out there to the air.
  • a first convective air flow is provided along the fixed contact pieces.
  • the convective air flow along the Festschalt publishede is ensured by a structural transformation of the Festschalt dealte, the contact slide device and the covers on the Festschalt frecen.
  • the principle is to obtain a significant flow cross-section. All outward sealing elements are removed or redesigned.
  • the open cross-section between the flow cross-section and the switching chamber is kept as low as possible by a corresponding constructive redesign.
  • the fixed switching pieces are U-shaped with two legs and a connecting the two legs transition area.
  • the transition region is designed such that two horned contours are parallel to each other and spaced from a recess.
  • the horned contours of the fixed contact pieces engage in contours of the switch inner housing and thus contribute in the event of a short circuit to the stabilization of the entire circuit breaker.
  • a leg extension is formed in the form of a nose, which increases the contact bearing surface for the underside arranged on the leg contact.
  • this Schenkenfortsatz the Festschalt Swisses causes the open cross-section between the ventilation duct and switching chamber is kept as low as possible.
  • the contact slide has a recess in the form of a perforation or breakthrough or simply U-shaped open towards the top, in the height of the recess the Festschalt thoroughlye is arranged and thus forms a complete ventilation duct on the Festschalt publishede and the contact slide, which is completed by covers on the Festschaltscoen and finally via openings in the housing.
  • a first convective airflow along the fixed contact pieces results through recesses on the contact slide device, on the fixed contact pieces and on the covers which are arranged on the fixed contact pieces, which form a total of a ventilation channel, which allows the heat dissipation through openings in the housing.
  • a second convective air flow is preferably formed in the L-side connection region, which branches off from the first convective air flow along the fixed contact pieces into the second switching device region and enables heat removal via a terminal connection and openings in the housing. Heat is also absorbed via the terminal as this flow past.
  • a third convective air flow in the T-side connection region is preferably formed, which is formed via a channel at the terminal connection and allows the heat dissipation through openings in the housing.
  • This convective airflow in the T-side connection area flows into the switch and passes through a channel on the hot terminal. He absorbs heat and then leaves the switch through openings in the housing.
  • dirt-collecting elements are arranged in the ventilation channel, which are designed such that they protect the circuit breaker from dirt, without preventing the air flow.
  • This dirt receiving element is preferably formed as a grid or arranged as a succession of surfaces that appear closed in the projected view, and thus prevent incoming dirt, but allow air circulation.
  • the present invention is characterized in that a continuous ventilation channel is formed within opposing housing walls along the Festschalt foundede as the first convective air flow through the power switch for heat dissipation.
  • a continuous ventilation channel is formed within opposing housing walls along the Festschalt foundede as the first convective air flow through the power switch for heat dissipation.
  • two more convective air streams are provided in the L-side connection region and in the T-side connection region.
  • Fig. 1 shows the structure of a circuit breaker according to the invention with a preferably two-part housing, in which a first switching device area 1 in a housing lower part 2 and a second switching device area 3 are arranged in a housing upper part 4.
  • a quenching chamber device 5 is arranged with superposed quenching plates 6 and centrally between the two splitter stack a contact slide device 7 with a positioned on a spring 8 movable contact piece 9.
  • the movable contact piece 9 is opposite to Festschalt Sharingen 10 arranged.
  • the fixed contact pieces 10 are preferably U-shaped with two legs 11, 12 which are interconnected by a transition region 13.
  • the transition region 13 of the fixed contact pieces 10 is preferably formed in the form of horned contours 14, which are preferably web-shaped and are spaced from each other by a recess 15.
  • the horned contours 14 engage in contours 16 of the housing inner wall of the circuit breaker, so that in the case of a short circuit, the housing is stabilized.
  • the short-circuit release 17 has a carrier part 18, preferably made of plastic, in which an armature 19 with a plunger 20, which is arranged within a pole 21 and projects into the contact slide device 7, is located.
  • a coil 22 is wound.
  • the coil 22 is surrounded by a yoke 23 and a magnetic plate 24.
  • a switching mechanism 25 is arranged above the short-circuit release 17, in addition to the short-circuit release 17 is an overload release 26 having a bimetal 27 around which a heating conductor 28 is wound. In each case laterally above the splitter stack in the upper housing part 4 are clamping connections 29, 30th
  • the circuit breaker according to the invention is characterized by the fact that the convective air flow through the circuit breaker for heat dissipation from preferably three individual streams is put together.
  • a first convective air flow is provided along the fixed contact pieces 10.
  • the convective air flow along the fixed contact pieces 10 is achieved by a structural redesign of the fixed contact pieces 10, the contact slide device 7 and a cover 31 which is positioned on the fixed contact pieces 10.
  • the principle is to obtain a significant flow cross-section. All outward sealing elements are removed or redesigned.
  • the open cross-section between the flow cross-section and the switching chamber is kept as low as possible by a corresponding constructive redesign.
  • the fixed switching pieces 10 are U-shaped with the two legs 11, 12 and the two legs 11, 12 connecting transition region 13.
  • the transition region 13 in this case has the horned contours 14, which are arranged parallel opposite the recess 15.
  • the contact slide device 7 has a recess 32 in the form of a through hole, which is arranged in the height of the recess 15 of the Festschalt providede 10 and thus forms a complete ventilation channel 33 via the Festschalt achievede 10 and the contact slide device 7, via the cover 31 on the Festschalt collaborateen 10 and finally completed via openings 34 in the housing.
  • a total of a first convective air flow along the Festschalt dealte 10 by recesses 15, 32 results in the contact slide device on the Festschalt collaborateen and on the cover 31, which are arranged on the Festschaltsen 10, which together form a ventilation channel 33, which allows the heat dissipation through the opening 34 in the housing.
  • a second convective air flow 35 is formed in the L-side connection region, which branches off from the first convective air flow along the fixed contact pieces 10 into the second switching device region 3 and enables heat removal via a terminal connection 29 and openings 36 in the housing. Heat is also absorbed via the terminal as this flow past.
  • a third convective air flow 37 is formed in the T-side connection region, which is formed via a channel 38 at the terminal connection 30 and allows the heat dissipation through openings 39 in the housing.
  • This convective airflow in the T-side connection area flows into the switch and passes through a channel on the hot terminal. He absorbs heat and then leaves the switch through openings 39 in the housing.
  • Fig. 2 an arrangement according to the invention of the contact slide device 7, the Festschalt mergen 10 and the cover 31 is shown on the Festschalt congressen 10, which allow the first convective air flow.
  • the fixed contact pieces 10 are U-shaped with the two legs 11, 12, which are connected to each other via a transition region 13.
  • the transition region 13 of the fixed contact pieces 10 is formed with horned contours 14, which are preferably web-shaped and are spaced from each other by the recess 15.
  • the horned contours 14 engage in the mounted state in the circuit breaker in counter contours 16 of the housing inner wall of the circuit breaker, so that in the case of a short circuit, the housing is stabilized.
  • the cover 31 on the Festschalt Siemensen 10 is provided with recesses 40, so that a complete ventilation is possible.
  • the recess 32 is on the contact slide device 7 in height of the recess 15 on the Festschalt Wunschen 10 in Fig. 2 to see.
  • Fig. 3 shows a portion of an L-side connection area of a circuit breaker with terminal.
  • the convective airflow 35 in the L-side connection region branches off from the current along the fixed contact pieces 10. He pulls past the terminal over an open cross-section in the switch. Then he leaves the switch via openings 36 in the upper housing part 4 and lower housing part, while flowing past the terminal. In the course of this flowing past heat is absorbed again via the terminal.
  • Fig. 4 shows a partial area of a T-side connection area with terminal.
  • the convective airflow 37 in the T-side port area flows into the switch and then passes through the channel 38 at the hot terminal. He absorbs heat and then leaves the switch through openings 39 in the housing wall.
  • Fig. 5 the quenching chamber device 5 with contact slide device 7 and fixed switching pieces 10 is shown.
  • the formation of the fixed contact pieces 10 allows a seal between the ventilation channel 33 and the switching chamber.
  • Fig. 6 illustrated that the leg 11 forms a leg extension in the form of a nose 41, which extends to the contact slide device 7.
  • the contact surface for the contacts below the leg is increased.
  • the open cross section 42 to the switching chamber is thereby minimized, so that a seal between the ventilation channel 33 and switching chamber is possible.
  • the present invention is characterized in that a continuous ventilation channel is formed within opposing housing walls along the Festschalt foundede as the first convective air flow through the power switch for heat dissipation.
  • a continuous ventilation channel is formed within opposing housing walls along the Festschalt foundede as the first convective air flow through the power switch for heat dissipation.
  • Two additional convective air streams are provided in the L-side connection area and in the T-side connection area.

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Breakers (AREA)
  • Patch Boards (AREA)
  • Thermally Actuated Switches (AREA)
  • Switch Cases, Indication, And Locking (AREA)

Claims (3)

  1. Commutateur de puissance avec un boîtier, dans lequel une première zone d'appareil de commutation (1), dans laquelle un dispositif à chambre d'extinction d'arc (5) et un dispositif à curseur de contact (7) avec des pièces de commutation mobiles (9) sont disposés, qui sont positionnés à l'opposé de pièces de commutation fixes (10), et une deuxième zone d'appareil de commutation (3) est disposée, dans laquelle un groupe de déclenchement de courant composé d'un déclencheur de court-circuit (17) et d'un déclencheur de surcharge (26) est disposé, caractérisé en ce qu'un canal d'aération traversant (33) est configuré à l'intérieur de parois de boîtier opposées le long des pièces de commutation fixes (10), dans lequel les pièces de commutation fixes (10) sont configurées en forme de U avec deux branches (11, 12) qui sont reliées entre elles par le biais d'une zone de transition (13), dans lequel la zone de transition (13) est configurée en forme de profils cornus (14) qui sont configurés en forme de nervures et sont espacés les uns des autres par le biais d'un creux (15), et dans lequel le dispositif à curseur de contact (7) présente un creux (32) qui est disposé à hauteur du creux (15) des pièces de commutation fixes (10) et configure ainsi un canal d'aération complet (33) via les pièces de commutation fixes (10) et le dispositif à curseur de contact (7) qui est complété par une ouverture (34) dans le boîtier.
  2. Commutateur de puissance selon la revendication 1, caractérisé en ce que les profils cornus (14) s'enclenchent dans des contre-profils (16) dans le boîtier de commutation.
  3. Commutateur de puissance selon la revendication 1 ou 2, caractérisé en ce qu'au niveau des pièces de commutation fixes (10) des becs (41) sont configurés.
EP11182094.0A 2011-09-21 2011-09-21 Commutateur de puissance doté de canaux d'aération pour une évacuation de chaleur efficace Active EP2573789B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP11182094.0A EP2573789B1 (fr) 2011-09-21 2011-09-21 Commutateur de puissance doté de canaux d'aération pour une évacuation de chaleur efficace
ES11182094.0T ES2600962T3 (es) 2011-09-21 2011-09-21 Interruptor de potencia con canales de ventilación para una evacuación eficiente del calor
KR1020147004600A KR101608685B1 (ko) 2011-09-21 2012-09-03 효율적인 열 방산을 위한 통풍 채널을 포함하는 회로 차단기
US14/117,454 US9147541B2 (en) 2011-09-21 2012-09-03 Circuit breaker comprising ventilation channels for efficient heat dissipation
BR112014006760-0A BR112014006760B1 (pt) 2011-09-21 2012-09-03 Disjuntor de potência com um alojamento
CN201280036666.1A CN103733294B (zh) 2011-09-21 2012-09-03 具有用于有效散热的通风通道的断路器
PCT/EP2012/067125 WO2013041358A1 (fr) 2011-09-21 2012-09-03 Disjoncteur comportant des canaux de ventilation pour une évacuation efficace de la chaleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11182094.0A EP2573789B1 (fr) 2011-09-21 2011-09-21 Commutateur de puissance doté de canaux d'aération pour une évacuation de chaleur efficace

Publications (2)

Publication Number Publication Date
EP2573789A1 EP2573789A1 (fr) 2013-03-27
EP2573789B1 true EP2573789B1 (fr) 2016-08-24

Family

ID=46785422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11182094.0A Active EP2573789B1 (fr) 2011-09-21 2011-09-21 Commutateur de puissance doté de canaux d'aération pour une évacuation de chaleur efficace

Country Status (7)

Country Link
US (1) US9147541B2 (fr)
EP (1) EP2573789B1 (fr)
KR (1) KR101608685B1 (fr)
CN (1) CN103733294B (fr)
BR (1) BR112014006760B1 (fr)
ES (1) ES2600962T3 (fr)
WO (1) WO2013041358A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104599909A (zh) * 2015-01-21 2015-05-06 温州高能电气有限公司 一种接线机构和应用该接线机构的断路器
KR101636343B1 (ko) * 2015-12-07 2016-07-05 주식회사 광명전기 금속폐쇄형 스위치기어
CN109935501A (zh) * 2019-03-29 2019-06-25 厦门宏发开关设备有限公司 一种带散热功能的框架断路器
US11545414B2 (en) * 2020-07-29 2023-01-03 Siemens Industry, Inc. Enhancing convection and cooling in a circuit breaker
CN113903630B (zh) * 2021-10-08 2023-08-15 国网山东省电力公司栖霞市供电公司 多端直流输电系统的直流断路器

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US2871322A (en) * 1956-11-21 1959-01-27 Westinghouse Electric Corp Mounting means for contact members
US3943473A (en) * 1974-04-29 1976-03-09 Square D Company Current limiting circuit breaker
US3953812A (en) * 1974-10-09 1976-04-27 General Electric Company Electric circuit breaker
DE3021867A1 (de) * 1980-06-11 1981-12-17 Brown, Boveri & Cie Ag, 6800 Mannheim Selbstschalter
US4430631A (en) * 1982-05-10 1984-02-07 Eaton Corporation Circuit breaker with increased current interrupting capacity
FR2540667B1 (fr) * 1983-02-08 1986-06-13 Telemecanique Electrique Interrupteur de protection automatique a sectionnement visible et a rearmement manuel
US5245302A (en) * 1992-05-05 1993-09-14 Square D Company Automatic miniature circuit breaker with Z-axis assemblable trip mechanism
US5483211A (en) * 1994-06-23 1996-01-09 Eaton Corporation Two-pole compartmentalized ground fault miniature circuit breaker with a single central electronics compartment
US5608198A (en) * 1995-06-26 1997-03-04 Square D Company Circuit breaker arrangement for protection against electrical arcs
DE19935661A1 (de) * 1999-07-29 2001-02-01 Abb Patent Gmbh Schaltkontaktanordnung für einen Leistungsschalter
US7176771B2 (en) 2001-08-24 2007-02-13 Square D Company Circuit breaker filter assembly
DE60211562T2 (de) 2002-01-31 2007-04-26 Mitsubishi Denki K.K. Luftunterbrecherschalter
US7009132B1 (en) * 2004-09-03 2006-03-07 Eaton Corporation Terminal assembly for vented circuit breaker and circuit breaker incorporating same
EP2573784B1 (fr) 2011-09-21 2016-08-03 Siemens Aktiengesellschaft Commutateur de puissance doté d'une stabilisation de boîtier optimisée par des pièces d'établissement de contacts fixes à effet de serrage

Also Published As

Publication number Publication date
US20140332502A1 (en) 2014-11-13
CN103733294A (zh) 2014-04-16
US9147541B2 (en) 2015-09-29
CN103733294B (zh) 2016-01-20
KR20140063620A (ko) 2014-05-27
BR112014006760B1 (pt) 2020-09-24
ES2600962T3 (es) 2017-02-13
BR112014006760A2 (pt) 2017-03-28
EP2573789A1 (fr) 2013-03-27
KR101608685B1 (ko) 2016-04-04
WO2013041358A1 (fr) 2013-03-28

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