EP0215331B1 - Ampoule pour un extincteur d'incendie ou autre système à déclenchement thermique - Google Patents

Ampoule pour un extincteur d'incendie ou autre système à déclenchement thermique Download PDF

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Publication number
EP0215331B1
EP0215331B1 EP86111609A EP86111609A EP0215331B1 EP 0215331 B1 EP0215331 B1 EP 0215331B1 EP 86111609 A EP86111609 A EP 86111609A EP 86111609 A EP86111609 A EP 86111609A EP 0215331 B1 EP0215331 B1 EP 0215331B1
Authority
EP
European Patent Office
Prior art keywords
glass bulb
shaft
diameter
glass
bulb according
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
Application number
EP86111609A
Other languages
German (de)
English (en)
Other versions
EP0215331A1 (fr
Inventor
Eduard J Dipl.-Ing. Job
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
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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
Priority to AT86111609T priority Critical patent/ATE47321T1/de
Publication of EP0215331A1 publication Critical patent/EP0215331A1/fr
Application granted granted Critical
Publication of EP0215331B1 publication Critical patent/EP0215331B1/fr
Expired legal-status Critical Current

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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 invention relates to a glass bulb according to the preamble of claim 1.
  • Such a glass bulb usually consists of a barrel or barrel-shaped shaft of various lengths, often with cranking in the wall or extensions towards the center, which together with the expanding liquid, or explosive liquid for short, forms the actual thermally active part.
  • the shaft is delimited at both ends by flat, conical or curved, essentially thermally inactive ends, which form the supports for the abutment of the sprinkler.
  • One of the ends usually has a filler neck through which the explosive liquid is filled and which is then closed.
  • the glass bulb must be able to absorb a certain permanent load, depending on the type of valve construction or the triggering device, so that the sprinkler remains securely closed for many decades and is always kept ready.
  • Known glass bulbs that meet the corresponding approval requirements have a diameter between 8 and 12 mm with wall thicknesses of 1 to 1.5 mm and a total length of 20 to 30 mm. Such relatively thick glass bulbs lead to long triggering times because of their unfavorable conditions from the heat-absorbing surface to the heating volume. In this regard, a spherical glass bulb has the worst possible shape.
  • the requirements for the glass pistons for sprinklers for automatic fire extinguishing systems and, analogously, for other thermal triggering devices are that increasingly shorter triggering times are required, down to a power of ten. If at the same time the requirement not to significantly change the sprinklers even in their tried-and-tested design is to be met, the fatigue strength of the glass pistons must not decrease under axial load.
  • the invention is based on the object of providing a glass bulb of the type mentioned at the outset which responds quickly to the new requirements without any significant loss of strength and durability. is destroyed in the event of fire and can be produced economically.
  • Both ends of the glass bulb are preferably enlarged in diameter compared to the shaft in such a way that all shear and tensile stresses which are unfavorable for glass and also the surface pressures occurring on the relatively large contact surfaces which are also made possible thereby remain below critical values.
  • the forces absorbed by the supports are transmitted in the base or ends thickened like a base, distributed and introduced axially as free as possible from all bending and shear stresses into the shaft designed as a tapered column. Since the strength of glass against compressive stress is about twenty times greater than that of tensile stress, and due to the described design of the glass bulb according to the invention pure compressive stresses occur in the stem, the particularly thin and slim, specifically heavy-duty shape of the stem is only made possible.
  • transition sections between the or the thickenings and the shaft are provided, the introduction and catenary of the forces in this critical area are carried out particularly advantageously, avoiding voltage peaks.
  • the transition sections can be shaped differently and are intended to ensure a gradual and smooth transfer of the forces into the thin shaft.
  • the thickening at one end or the thickening at both ends can be approximately spherical in the area of the bearing surfaces in order to form a joint together with the abutment, so that even with occasional unavoidable lateral displacement of the two Abutment bending stresses in the thin shaft can be avoided.
  • the glass piston B shown greatly enlarged in the drawing, is suitable for use in a sprinkler S, the abutments of which are designated 12 and 13.
  • the glass bulb B has a thin, thermally highly active shaft 1 with a sealed chamber 1.1, in which the explosive liquid 2 is located. A small bubble 2.1 is shown in the explosive liquid.
  • the two ends which are generally designated 3 and 4, are thickened like a bead compared to the thin shaft 1 and they absorb unfavorable shear and tensile stresses.
  • the end 3 shown in the drawing below carries a filler neck 7 which is closed at 8.
  • Transition sections 5 and 6 between the shaft 1 and the ends 3 and 4 are evenly grooved by outer transition lines 3.1 and 4.1, which ensures a favorable introduction of force into the thin shaft 1 without unfavorable stress peaks, so that pure compressive stresses occur in this area.
  • the chamber 1.1 has a cylindrical section 1.2 with rounded corners in the area of the upper end 4 and an inner transition line 1.3 in the area of the lower end 3.
  • the corresponding geometric design of the transition sections 5 and 6 between the thin shaft 1 and the ends 3 and 4 results in reinforcement sections 3.2 and 4.2, the shape and smooth contour of which can be clearly seen in the drawing.
  • the thin and slim glass bulb in the area of the bearing surfaces 10, 11 has a relatively large diameter in relation to the shaft 1, larger areas are available in this area for the force absorption, so that the surface pressures do not become too great.
  • the spherical sections of the supports 10, 11 together with the abutments 12, 13 form joints which avoid bending stresses on the shaft.
  • the distance between the contact surfaces 10, 11 was approximately 20 mm.
  • the length of the thin, thermally active shaft 1 was approximately 15 mm, its outer diameter was approximately 3 mm and the wall thickness was approximately 0.4 mm.
  • the outer diameter of the bead-like ends 3, 4 was approximately 4 mm.
  • the triggering times of the glass bulb described were more than five times shorter compared to conventional glass bulb with a diameter of 8 to 10 mm, with approximately the same strength.
  • Fig. 2 The embodiment shown in Fig. 2 is very similar to that of Fig. 1.
  • the transition sections between the ends 23 and 24 and the shaft 21 are much more elongated and the transition lines 23.1 and 24.1 and the reinforcements 23.2 and 24.2 run correspondingly differently.
  • the chamber 22 is also shaped accordingly, as becomes clear when viewing FIG. 2.
  • the regions of the ends 23 and 24 which abut the abutments 12 and 13 of the sprinkler S or are in engagement therewith are denoted by 25 and 26, respectively.
  • the gradual increase in the diameter and the wall thickness in the region of the ends of the glass bulb ensures a correspondingly favorable introduction of force and distribution.
  • FIG. 3 differs essentially from that according to FIG. 1 in that only the end 33, which has the filler neck 7, has an enlarged diameter.
  • the formation of the end 33 with the transition line 33.1 corresponds to the end 3 with the transition line 3.1 of the embodiment according to FIG. 1.
  • the upper end 34 does not have an enlarged diameter.
  • the transition from the shaft 31 takes place through the transition line 34.1 shown without a larger diameter to form the seating area 35.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Claims (6)

1. Ampoule (B) pour extincteurs d'incendie ou autre système à déclenchement thermique, comprenant une tige (1,21,31 ) active thermiquement, de réalisation cylindrique et remplie d'un liquide explosif (2, 22), une extrémité (3, 23, 33) de l'ampoule (B) portant une tubulure de remplissage (7), caractérisée en ce que l'ampoule (B) présente à son extrémité (3, 23, 33 et 4, 24, 34) une épaisseur de paroi plus forte que la tige (1, 21, 31), et en ce que le diamètre d'au moins l'extrémité (3, 23, 33) portant la tubulure de remplissage (7) est supérieur à celui de la tige (1, 21, 31).
2. Ampoule (B) selon la revendication 1, caractérisée en ce que les deux extrémités (3, 23, 33 et 4, 24, 34) présentent un diamètre qui est supérieur à celui de la tige (1, 21, 31).
3. Ampoule (B) selon la revendication 1 ou 2, caractérisée en ce que la tige (1) présente un diamètre inférieur à 6 mm.
4. Ampoule (B) selon la revendication 1, 2 ou 3, caractérisée en ce qu'une partie de transition (5, 6; 23.2, 24.2; 33, 1) est prévue entre l'épaississement (3, 4; 23, 24; 33) correspondant et la paroi de la tige (1).
5. Ampoule (B) selon une ou plusieurs des revendications 1 à 4, caractérisée en ce que les extrémités épaissies (3, 4) ont dans la zone des appuis (10, 11) une partie approximativement de forme sphérique.
6. Ampoule (B) selon une ou plusieurs des revendications précédentes, caractérisée en ce que l'épaisseur de paroi de la tige (1) est de 0,2 à 0,4 mm pour une longueur d'environ 15 mm et pour un diamètre allant de 2 à 3 mm, et en ce que les extrémités épaissies (3 ou 4) présentent un diamètre qui est de 0,1 à 1 mm plus grand que celui de la tige.
EP86111609A 1985-09-09 1986-08-22 Ampoule pour un extincteur d'incendie ou autre système à déclenchement thermique Expired EP0215331B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86111609T ATE47321T1 (de) 1985-09-09 1986-08-22 Glaskolben fuer sprinkler fuer feuerloeschanlagen oder andere thermische ausloeseeinrichtungen.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3532042 1985-09-09
DE3532042 1985-09-09
DE19863601203 DE3601203A1 (de) 1985-09-09 1986-01-17 Glasfaesschen fuer sprinkler fuer feuerloeschanlagen oder andere thermische ausloeseeinrichtungen
DE3601203 1986-01-17

Publications (2)

Publication Number Publication Date
EP0215331A1 EP0215331A1 (fr) 1987-03-25
EP0215331B1 true EP0215331B1 (fr) 1989-10-18

Family

ID=25835778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86111609A Expired EP0215331B1 (fr) 1985-09-09 1986-08-22 Ampoule pour un extincteur d'incendie ou autre système à déclenchement thermique

Country Status (3)

Country Link
EP (1) EP0215331B1 (fr)
AU (1) AU583649B2 (fr)
DE (2) DE3601203A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010013607U1 (de) 2010-09-27 2011-12-28 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement für ein thermisch gesteuertes Schaltelement

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739835A (en) * 1986-06-23 1988-04-26 Central Sprinkler Corp. Quick response glass bulb sprinkler
NZ220118A (en) * 1987-04-28 1990-10-26 David John Picton Pipeline fluid over temperature protection fitting
DE3808384C2 (de) * 1987-07-06 1990-03-22 Total Feuerschutz Gmbh Ausl¦seglied zur thermischen und/oder elektrischen Ausl¦sung einer Brandschutzanlage
US4898246A (en) * 1987-07-06 1990-02-06 Total Walther Feuerschutz Gmbh Quick release valve for sprinkler head
DE3822696A1 (de) * 1988-03-12 1990-01-11 Total Feuerschutz Gmbh Ausloeseglied
DE3819749A1 (de) * 1988-06-10 1989-12-14 Verband Der Sachversicherer Ev Thermische ausloesevorrichtung fuer sprinkler fuer ortsfeste feuerloeschanlagen
DE3844696C2 (en) * 1988-07-05 1992-01-23 Total Walther Feuerschutz Gmbh, 5000 Koeln, De Triggering element for sprinkler installations
DE3940453C1 (fr) * 1989-12-07 1991-01-31 Total Walther Feuerschutz Gmbh, 5000 Koeln, De
GB2239394B (en) * 1989-12-27 1994-04-20 Total Feuerschutz Gmbh A triggering element for a fire protection element
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.
DE202011050661U1 (de) 2011-07-07 2011-09-09 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement für Sprinkler, Ventile oder dergleichen
DE202013102312U1 (de) 2013-05-28 2014-08-29 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement
DE202015103950U1 (de) 2015-07-28 2016-11-02 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement
DE202017103682U1 (de) 2017-06-21 2018-09-24 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB409569A (en) * 1933-09-12 1934-05-03 Willis Kennedy Hodgman Jr Improvements in or relating to frangible struts adapted to be burst on expansion of a fluid contained therein, such as are used in fireextinguishing apparatus
DE3220124A1 (de) * 1982-05-28 1983-12-01 Walther & Cie AG, 5000 Köln Ausloeseglied fuer einen sprinkler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202010013607U1 (de) 2010-09-27 2011-12-28 Job Lizenz Gmbh & Co. Kg Thermisches Auslöseelement für ein thermisch gesteuertes Schaltelement
EP2433677A2 (fr) 2010-09-27 2012-03-28 Job Lizenz GmbH & Co. KG Elément de libération thermique pour un élément de commutation à commande thermique

Also Published As

Publication number Publication date
AU583649B2 (en) 1989-05-04
AU6163386A (en) 1987-03-12
DE3666353D1 (en) 1989-11-23
EP0215331A1 (fr) 1987-03-25
DE3601203A1 (de) 1987-03-19

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