EP0301052B1 - Auslöseelement für einen sprinkler - Google Patents

Auslöseelement für einen sprinkler Download PDF

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Publication number
EP0301052B1
EP0301052B1 EP88901221A EP88901221A EP0301052B1 EP 0301052 B1 EP0301052 B1 EP 0301052B1 EP 88901221 A EP88901221 A EP 88901221A EP 88901221 A EP88901221 A EP 88901221A EP 0301052 B1 EP0301052 B1 EP 0301052B1
Authority
EP
European Patent Office
Prior art keywords
trigger element
hydrocarbons
low
sprinkler
expanding liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88901221A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0301052A1 (de
Inventor
Johann Georg Mohler
Petr Bohac
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0301052A1 publication Critical patent/EP0301052A1/de
Application granted granted Critical
Publication of EP0301052B1 publication Critical patent/EP0301052B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • A62C37/10—Releasing means, e.g. electrically released
    • A62C37/11—Releasing means, e.g. electrically released heat-sensitive
    • A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels

Definitions

  • the most commonly used extinguishing system is the sprinkler system, which is screwed to the water pipe network and is the most common extinguishing system.
  • the water outlet nozzle is closed by a glass barrel filled with a suitable liquid.
  • the hot flue gases heat up the explosive; this expands and bursts the glass keg when a trigger temperature specified by the filling quantity is reached. This automatically releases the nozzle and sprays the source of the fire with an extinguishing jet that is torn into droplets.
  • the thermal capacity of the explosive fluid but also its thermal conductivity and viscosity play an important role. So that the spread of the trigger temperature is within the narrowest possible tolerances of approx. 5%, the explosive liquid should also cause the steepest possible rise in pressure when heated, that is, it should have a high value that is decisive for the rise in pressure with temperature (dP / dT) Have ratio of thermal expansion coefficient to compressibility (> 10 bar / K).
  • the response time can be influenced by the material properties on the one hand, and by design measures on the other.
  • a reduction in response time results, for example, from a reduction in the wall thickness of the glass barrel, an increase in the thermal conductivity of the glass material and / or the explosive fluid, as well as a reduction in volume of the glass barrel.
  • German published patent application DE 32 20 124 A1 published in December 1983, describes a reduction in the volume of filling liquid by means of an inserted displacer.
  • alcohols are mainly used as explosives for glass barrel sprinklers, namely n-butanol, isopropanol and glycerin, less often paraffin oil or more recently ethyl acetate.
  • the present invention shortens the response time by using special explosive liquids, in which the heat absorption takes place particularly quickly, as the inner filling of the sprinkler glass vials. It was found experimentally that the response time of the glass vials serving as trigger elements depends on the one hand on the product of the average thermal capacity of the explosive liquid with its density and the glass barrel volume (thermal capacity of the inner filling), but on the other hand also depends on the thermal conductivity of the explosive liquid and its viscosity. The coefficient of thermal expansion, toxicity and chemical resistance of a liquid over time also play a role in its use as an explosive.
  • Table II below shows the volume-related heat capacities (i.e. the products of the heat capacity and the density), the viscosities, the thermal conductivities and the calculated values of the pressure rise with the temperature (which correspond to the ratio of thermal expansion coefficient to compressibility) of some explosive liquids specified.
  • the volume-related heat capacity C ' has a value ⁇ 1.5 J / ml
  • the viscosity has a value ⁇ 0.8 mPa ⁇ s
  • the thermal conductivity has a value> 0.025 W / cm ⁇ K
  • the Pressure increase with the temperature dP / dT has a value> 10 bar / K.
  • worse values for one or more properties and better values for other properties can balance each other out to some extent.
  • the invention now relates to a trigger element for a sprinkler, wherein the trigger element consisting of a glass barrel and filled with an explosive liquid keeps the water outlet nozzle of the sprinkler closed, which is characterized in that the explosive liquid is composed of lower alkyl homologues of benzene, medium aliphatic hydrocarbons and lower cycloaliphatic Hydrocarbons, halogenated hydrocarbons and their mixtures with one another or with other liquids miscible therewith are selected.
  • the lower alkyl homologues of benzene, the middle aliphatic hydrocarbons, that is, for example, aliphatic hydrocarbons with 5 to 12 carbon atoms, the lower cycloaliphatic hydrocarbons, that is, for example, cycloaliphatic hydrocarbons with up to 8 carbon atoms, and the halogenated hydrocarbons can, as a rule, with one another and with other liquids with organic compounds known as explosive liquids, such as lower mono- or polyhydric aliphatic alcohols and lower alkyl esters of lower alkane carboxylic acids, in any ratio in which they are miscible with one another.
  • the explosive liquid can consist of toluene, xylene, n-decane, cyclohexane, trichlorethylene, tetrachlorethylene or mixtures thereof.
  • the explosives can be used for different nominal opening temperatures.
  • n-decane is suitable for nominal opening temperatures up to 182 ° C.
  • the explosive liquid can be used as a lower mono- or polyhydric aliphatic alcohol or lower alkyl ester of a lower alkane carboxylic acid or a mixture thereof, e.g. Contain methanol, ethanol, isopropanol, glycerin or ethyl acetate or mixtures thereof, but usually no special advantages can be achieved.

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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP88901221A 1987-02-13 1988-02-11 Auslöseelement für einen sprinkler Expired - Lifetime EP0301052B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH535/87A CH672745A5 (enExample) 1987-02-13 1987-02-13
CH535/87 1987-02-13

Publications (2)

Publication Number Publication Date
EP0301052A1 EP0301052A1 (de) 1989-02-01
EP0301052B1 true EP0301052B1 (de) 1991-11-06

Family

ID=4189248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88901221A Expired - Lifetime EP0301052B1 (de) 1987-02-13 1988-02-11 Auslöseelement für einen sprinkler

Country Status (7)

Country Link
US (1) US4938294A (enExample)
EP (1) EP0301052B1 (enExample)
JP (1) JP2650189B2 (enExample)
AU (1) AU1222088A (enExample)
CH (1) CH672745A5 (enExample)
DE (1) DE3866046D1 (enExample)
WO (1) WO1988006046A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19780041C1 (de) * 1996-01-25 2002-02-21 Norbulb Sprinkler Elemente Gmb Auslöseglied für einen Sprinkler

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672745A5 (enExample) * 1987-02-13 1989-12-29 Johann Georg Mohler
GB9620598D0 (en) * 1996-10-03 1996-11-20 Grinnell Mfg Uk Ltd Thermally responsive frangible bulb
US5829532A (en) 1997-03-07 1998-11-03 Central Sprinkler Corporation Low pressure, early suppression fast response sprinklers
DE10219079B4 (de) * 2002-04-29 2004-06-03 Minimax Gmbh Verfahren zum Herstellen von Glasampullen
DE202009007987U1 (de) 2009-06-05 2010-10-28 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement für Sprinkler, Ventile o.dgl.
US20120012190A1 (en) * 2010-07-13 2012-01-19 Barber Gerald L Valve system for releasing pressurized fluid
DE202011050661U1 (de) * 2011-07-07 2011-09-09 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement für Sprinkler, Ventile oder dergleichen
DE202012100623U1 (de) 2012-02-24 2012-03-22 Job Lizenz Gmbh & Co. Kg Brandschutzeinrichtung für elektrische Kleingeräte
EP4260915A3 (en) 2018-08-24 2023-12-27 Tyco Fire Products LP Fire protection device with conformal coating
US11511145B1 (en) * 2019-06-19 2022-11-29 Minimax Viking Research & Development Gmbh Fast response glass bulb thermal trigger arrangements and methods thereof for large orifice suppression fire protection sprinklers

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1771826A (en) * 1926-02-25 1930-07-29 Taylor John Automatic sprinkler and the like
US1905676A (en) * 1930-04-15 1933-04-25 Gen Fire Extinguisher Co Automatic sprinkler or fire extinguisher and other fire device
FR713683A (fr) * 1930-04-15 1931-10-31 Mather & Platt Ltd Perfectionnements aux appareils automatiques de projection de fluides ou extincteursd'incendie et autres dispositifs pour la lutte contre les incendies
US2125510A (en) * 1936-08-20 1938-08-02 Leroy M Lewis Automatic sprinkler
DE3220124A1 (de) * 1982-05-28 1983-12-01 Walther & Cie AG, 5000 Köln Ausloeseglied fuer einen sprinkler
CH672745A5 (enExample) * 1987-02-13 1989-12-29 Johann Georg Mohler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19780041C1 (de) * 1996-01-25 2002-02-21 Norbulb Sprinkler Elemente Gmb Auslöseglied für einen Sprinkler

Also Published As

Publication number Publication date
CH672745A5 (enExample) 1989-12-29
US4938294A (en) 1990-07-03
AU1222088A (en) 1988-09-14
EP0301052A1 (de) 1989-02-01
WO1988006046A1 (fr) 1988-08-25
JP2650189B2 (ja) 1997-09-03
DE3866046D1 (de) 1991-12-12
JPH01502238A (ja) 1989-08-10

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