EP2556857A1 - Automatic extinguisher for protecting electrical boxes - Google Patents

Automatic extinguisher for protecting electrical boxes Download PDF

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Publication number
EP2556857A1
EP2556857A1 EP11765119A EP11765119A EP2556857A1 EP 2556857 A1 EP2556857 A1 EP 2556857A1 EP 11765119 A EP11765119 A EP 11765119A EP 11765119 A EP11765119 A EP 11765119A EP 2556857 A1 EP2556857 A1 EP 2556857A1
Authority
EP
European Patent Office
Prior art keywords
extinguishing
machinery
mainly
protection
automatic fire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11765119A
Other languages
German (de)
English (en)
French (fr)
Inventor
Rafael Giner Tendero
Pedro Carlos Picatoste Navarro
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.)
Self Prevent System SL
Original Assignee
Self Prevent System SL
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 Self Prevent System SL filed Critical Self Prevent System SL
Publication of EP2556857A1 publication Critical patent/EP2556857A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/11—Permanently-installed equipment with containers for delivering the extinguishing substance controlled by a signal from the danger zone
    • A62C35/13—Permanently-installed equipment with containers for delivering the extinguishing substance controlled by a signal from the danger zone with a finite supply of extinguishing material
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/46—Construction of the actuator
    • A62C37/48—Thermally sensitive initiators

Definitions

  • the operating mode of automatic extinguishing systems is generally based on fire detection using temperature and smoke detectors or infrared/ultraviolet sensors, which send an actuating signal, directly or previously filtered via a control switchboard, to the activation device of the extinguishing device, which is generally composed of a mechanical solenoid electrovalve that enables the fire-extinguishing substance to be discharged.
  • Automatic fire extinguishers also function by means of mechanical devices which, due to the physical expansion process caused by the heat of the fire, actuate or release valves that discharge the fire-extinguishing substance.
  • references nearest to the proposed invention in the current state of the art include utility model DE 8913 487 U , which relates to an automatic fire extinguisher specially designed to protect electrical boxes basically composed of a sensor, preferably of smoke or temperature, an extinguishing element (CO2 bottle) and a control centre which, when the sensors detect values that exceed a predefined threshold, opens a corresponding valve, releasing the extinguishing substance.
  • the whole assembly is disposed within a casing that can be inserted inside the box being protected and can have the corresponding standard dimensions for insertion inside a standard rack system.
  • ES 1 045 478 relates to a Spanish utility model that discloses an automatic fire-extinguishing device for unmanned service stations and is basically composed of three parts.
  • the first includes the detection element (thermal fuse) which, combined with a firing pin and under established load rating conditions, triggers the release of the CO2 contained in a receptacle.
  • This action causes the CO2 to circulate through conduits towards the second element, which is composed by a bottle mainly containing an extinguishing substance, an electromechanical solenoid valve and a pressure gauge, causing the pressure gauge to open, which in turn releases the extinguishing substance contained in the receptacle, which is conveyed to the protected area.
  • the third element includes means for manually actuating the fire extinguisher, whether by actuating the solenoid valve or pressure gauge of the second element described. Additionally, the actuation device is connected to a control centre to which it sends a signal when it is actuated.
  • JP 4049980 discloses an automatic fire extinguisher specially designed for electrical environments and which is mainly composed of a casing wherein an ultraviolet-type fire extinguisher, a smoke detector, an acoustic alarm, a control centre, a bottle containing an extinguishing substance and an actuator are disposed.
  • the system is powered by a battery and, when fire is detected via a signal previously filtered by a control centre, the actuator is activated, releasing the fire-extinguishing substance.
  • means are established to inform of the fire hazard.
  • the proposed invention incorporates several advantages over current automatic fire-extinguishing systems.
  • the proposed invention is composed of two interdependent but separable elements.
  • the first element which we will call the base, is the baseboard being fixed around the device to be protected wherein the batteries, electrical connectors, probes, socket joint, extinguishing substance discharge tube and cable for interconnecting the described elements and for powering the device are housed.
  • the second element which we will call the body, is the part that is coupled to the base when the system is in operating mode, and which we can separate therefrom.
  • Said body houses the electrical connections, control board also including lighting and optical and acoustic signalling means, a bottle containing an extinguishing substance, an actuator with a dual actuator system, a socket joint, discharge tube of the extinguishing substance and cable for interconnecting the described elements.
  • control board also has interconnection means with other devices, such as alarm centres, domotic equipment, external optical and acoustic signalling and similar devices.
  • This construction solution is adopted to facilitate and simplify supervision and maintenance operations that must be carried out on said device, while facilitating assembly thereof.
  • the batteries and the bottle containing the extinguishing substance are the only components that require greater attention and periodic control.
  • the batteries must be replaced when they lose their charging capacity and the bottle requires supervision in order to determine whether it contains extinguishing substance.
  • the batteries are disposed at the base so they can easily be accessed for verification and replacement thereof when necessary. Additionally, as the batteries are excluded from the device body, their replacement does not alter the weight thereof, due to which the presence of extinguishing substance in the bottle can be verified by simply weighing the body of the device.
  • the casing that forms the body has been designed to be easily disassembled in order to access its components in the event of possible alterations thereto, thereby achieving the double objective of accurate weighing control while guaranteeing the proper functioning of the device.
  • the bottle that contains the extinguishing substance is closed by a cap and sealed.
  • the extinguishing substance is released when the cap is perforated by the actuator which, on striking the cap, causes the passage of a sufficient amount of electric current to erode it at the point of contact between the two elements, at which moment the extinguishing substance is released.
  • This action due to the electrical overcurrent produced, simultaneously causes the disconnection of the electrical protections of the protected electric box or machine, preventing the fire, once extinguished, to break out again.
  • the actuator intervenes in an electromechanical manner on receiving the order from the control board, but also has construction characteristics that allow it to act mechanically and automatically in case of failure of the control board or components on which it depends, i.e. batteries and sensor.
  • the autonomous lighting means and optical and acoustic signalling means with which the present invention has been equipped intervene solidarily in the event the fire extinguisher is activated, lighting the area being protected and informing of the situation in order to facilitate human intervention, although these can also intervene in the absence of mains power.
  • the base must be installed next to the electric box or machine to be protected so as to confer full operating capacity.
  • the discharge tube of the extinguishing substance and power cables of the device that will be connected to the protected elements emerge from the sensing probe.
  • the cable for interconnecting other devices, such as alarm centres, domotic equipment, external optical and acoustic alarm signalling and similar devices will emerge from the base, if necessary.
  • the electrical connectors (5) are housed on the baseboard (6) located at the base (3) and over the control board (4). Their function is to interconnect the electrical wiring integrated within the device and, more specifically, that which joins the probe (9), the batteries (1) and the circuit breaker of the electric box or machine to be protected with the control board (4), allowing separation of the base (3) and body (8). It also complementarily interconnects the electrical wiring that joins the control board (4) with other devices.
  • the probe (9) is preferably housed in the interior of the device to be protected and is interconnected to the control board (4) by means of a cable. Its function is to detect fire, and transmit this hazard to the control board (4).
  • the socket joints (10) are integrated in the base (3) and in the body (8), forming part thereof. Their function is to interconnect the discharge tubes (32) of the extinguishing substance (11) integrated in the device, which join the actuator (12) and the protected electric box or machine so that the base (3) and the body (8) can become separated.
  • the control board (4) is housed in a baseboard (7) integrated in the body (8). It receives and filters information from the probe (9) and orders the actuator (12) and LEDs (13) to intervene if necessary. It also includes optical (14) and acoustic (34) signals to inform about the status of the device. It can be interconnected to other devices such as alarm centres, domotic equipment, external optical and acoustic signalling and similar devices to offer additional functions. It is equipped with a power-off switch (22) which is actuated by a button (23) designed to manually override the device in order to restore the power supply to the protected electric box or machine. It receives power through the feed cable (28).
  • the actuator (12) is joined to this bottle (15), and is formed by a cylinder (17) composed of non-ferric material that contains a hollow moving piston (18) composed of ferromagnetic electrical-conductor material having its rear part open.
  • the front part of the moving piston (18) has three orifices (20).
  • a moving point (21) passes through the central orifice, while the function of the two other orifices is to allow passage therethrough of the extinguishing substance (11).
  • Said moving point (21) extends up to the moving magnet (24) contained in the moving piston (18).
  • a hot-melt element (25) is disposed between the moving point (21) and the moving magnet (24) that prevents the moving point (21) from moving forward under normal conditions.
  • a washer (26) composed of ferromagnetic material has been disposed at the rear of the cylinder (17) to retain the moving piston (18), which is magnetised by the moving magnet (24) that it contains.
  • the actuator is enclosed by a solenoid (27) that allows the moving cylinder (17) to move forward when activated, overcoming the opposition of the moving magnet (24) and washer (26) to said movement.
  • a solenoid (27) that allows the moving cylinder (17) to move forward when activated, overcoming the opposition of the moving magnet (24) and washer (26) to said movement.
  • Another possible situation is that the moving point (21) moves forward when the hot-melt element (25) is subjected to specific temperature conditions that cause it to soften, allowing the moving magnet (24) to move forward, which in turn pushes the moving point (21). Therefore, the function of the actuator (12) is to enable the moving point (21) to come into contact with the O-ring cap (19), whether by means of the action of the solenoid (27) on the moving piston (18) or autonomously on softening the hot-melt element (25), allowing the moving point (21) to move forward.
  • the base (3) is fixed next to the element to be protected.
  • the probe (9) which is housed in within the base (3); the feed cable (28), which is connected to the general breaker of the element to be protected and, complementarily, the cable for interconnection with other devices, emerge from the base (3).
  • the body (8) is coupled to the base (3), both of which are fixed by the hooks (29).
  • the body (8) is separable from the base (3) to facilitate supervision and maintenance operations.
  • the main mode of operation is as follows: the control board (4) analyses the data received by the probe (9) located in the interior of the protected element and, when the parameters that the control board (4) receives from the probe (9) are interpreted as a fire hazard, it activates the solenoid (27), which causes the moving piston (18) to move forward.
  • This allows the moving point (21), which receives power from the control board (4) via the cable (30), after being successively conveyed through the discharge tube (32), cylinder (17), moving piston (18) and moving magnet (24), to come into contact with the O-ring cap (19), fed by the cable (31), generating electrical overcurrent at the point of contact between the moving point (21) and the O-ring cap (19), which erodes the O-ring cap (19).
  • the extinguishing substance (11) contained in the bottle (15) is released and conveyed through the orifices (20) of the moving piston (18), cylinder (17), discharge tubes (32) and socket joints (10) towards the interior of the protected electric box or machine, extinguishing the fire.
  • the orifices (20) made in the moving piston (18) are dimensioned so as to achieve a reduction in the pressure of the extinguishing substance (11) at the required level.
  • the secondary or auxiliary operating mode intervenes in the event of failure of the control board (4), probe (9), solenoid (27) or any component on which these depend and, in this case, the moving point (21) moves forward as a result of the softening of the hot-melt element (25).
  • the device has a power-off switch (23) which, on being actuated, disables the disconnector (22). This action eliminates the short-circuit between the moving point (21) and the O-ring cap (19), activating the circuit breaker that feeds the protected device.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fire Alarms (AREA)
EP11765119A 2010-04-06 2011-03-29 Automatic extinguisher for protecting electrical boxes Withdrawn EP2556857A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201000451 2010-04-06
PCT/ES2011/070212 WO2011124737A1 (es) 2010-04-06 2011-03-29 Extintor automático para protección de cuadros eléctricos.

Publications (1)

Publication Number Publication Date
EP2556857A1 true EP2556857A1 (en) 2013-02-13

Family

ID=44762049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11765119A Withdrawn EP2556857A1 (en) 2010-04-06 2011-03-29 Automatic extinguisher for protecting electrical boxes

Country Status (3)

Country Link
EP (1) EP2556857A1 (es)
ES (1) ES2409944B1 (es)
WO (1) WO2011124737A1 (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2879151A1 (fr) * 2013-12-02 2015-06-03 Schneider Electric Industries SAS Dispositif de protection anti-incendie d'un dispositif démarreur-contrôleur d'une installation électrique
CN111773587A (zh) * 2020-07-10 2020-10-16 广东电网有限责任公司 一种配电柜灭火装置
IT202000006526A1 (it) * 2020-03-27 2021-09-27 Luigi Filannino "Dispositivo automatico per l'estinzione di incendi in ambito domestico"
US11154736B2 (en) 2015-12-14 2021-10-26 Coopers Fire Limited Fire or smoke barrier
WO2022128824A1 (fr) 2020-12-18 2022-06-23 Renault S.A.S Bouchon thermofusible

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4711307A (en) * 1985-05-20 1987-12-08 Harold Rosen Compact self-contained fire extinguisher
DE8913487U1 (de) * 1989-11-15 1990-03-01 I R S Industrie Rationalisierungs Systeme GmbH, 6100 Darmstadt Löschvorrichtung für Schaltschränke
JPH0763516B2 (ja) * 1990-06-14 1995-07-12 東京防災設備株式会社 電気機器又は操作用部品等を内装した開閉型操作盤内に発生した電気火災等の自動消火装置
US5551517A (en) * 1995-09-05 1996-09-03 Arsenault; Joseph Automatic fire extinguishing discharge valve
ES1045478Y (es) 2000-02-18 2001-03-01 Ind Auca S L Dispositivo automatico de extincion de incendios para estaciones de servicio sin vigilancia.
JP2004201961A (ja) * 2002-12-25 2004-07-22 Santekkusu:Kk 感熱式アクチュエータおよび自動消火装置
ES1066142Y (es) * 2007-09-06 2008-03-16 Navarro Pedro Carlos Picatoste "dispositivo anti-incendios"

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011124737A1 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2879151A1 (fr) * 2013-12-02 2015-06-03 Schneider Electric Industries SAS Dispositif de protection anti-incendie d'un dispositif démarreur-contrôleur d'une installation électrique
FR3014258A1 (fr) * 2013-12-02 2015-06-05 Schneider Electric Ind Sas Dispositif de protection anti-incendie d'un dispositif demarreur-controleur d'une installation electrique
US9526929B2 (en) 2013-12-02 2016-12-27 Schneider Electric Industries Sas Fire protection device of an electric installation starter-controller device
US11154736B2 (en) 2015-12-14 2021-10-26 Coopers Fire Limited Fire or smoke barrier
IT202000006526A1 (it) * 2020-03-27 2021-09-27 Luigi Filannino "Dispositivo automatico per l'estinzione di incendi in ambito domestico"
CN111773587A (zh) * 2020-07-10 2020-10-16 广东电网有限责任公司 一种配电柜灭火装置
WO2022128824A1 (fr) 2020-12-18 2022-06-23 Renault S.A.S Bouchon thermofusible
FR3117880A1 (fr) 2020-12-18 2022-06-24 Renault Bouchon thermofusible

Also Published As

Publication number Publication date
ES2409944B1 (es) 2014-06-25
ES2409944R1 (es) 2013-08-28
WO2011124737A1 (es) 2011-10-13
ES2409944A9 (es) 2014-02-05
ES2409944A2 (es) 2013-06-28

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