EP1029559B1 - Système de déclenchement à élément fusible - Google Patents
Système de déclenchement à élément fusible Download PDFInfo
- Publication number
- EP1029559B1 EP1029559B1 EP00400434A EP00400434A EP1029559B1 EP 1029559 B1 EP1029559 B1 EP 1029559B1 EP 00400434 A EP00400434 A EP 00400434A EP 00400434 A EP00400434 A EP 00400434A EP 1029559 B1 EP1029559 B1 EP 1029559B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuse element
- rod
- tubular element
- activation system
- stop
- 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
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/24—Operating or controlling mechanisms
- A62C2/241—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts
- A62C2/242—Operating or controlling mechanisms having mechanical actuators and heat sensitive parts with fusible links
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
- A62C2/18—Sliding dampers
- A62C2/20—Sliding dampers at 90 degrees to the plane of the opening
Definitions
- the subject of the present invention is a triggering system fuse element.
- the invention relates to a system that allows cause a rod to move very suddenly when the temperature surrounding area exceeds a predetermined threshold, the displacement of this rod allowing to actuate a device, for example a safety device.
- the system of trigger is intended to be mounted in an adverse environment likely to affect the mechanical strength of this system, in particular by temperature or humidity conditions.
- the longitudinal bulk due to the assembly constituted by the tubular element and the return spring is very significantly reduced compared to previous solutions.
- the trigger system is used to equip a valve aeration, this allows to have a great freedom to choose the race of the shutter fixed on the rod of the system, the speed of closing and especially the closing pressure.
- the system trigger can be adjusted in position relative to the body of the valve.
- the spring is entirely contained in the tubular element and preferably also the second end of the tubular piece is closed by the second means forming a stop or said second piece of the fuse element.
- the spring is the critical piece of trigger system is fully contained in a limited closed volume by the tubular piece whose end is closed.
- the two constituent pieces the fuse element are each provided with a hole
- the mechanical connection means include a first leg secured to the second end of the element tubular whose free end enters the hole of the second piece of the fuse element and the mechanical cooperation means comprise a second lug secured to the second end of the rod and whose end free penetrates the hole of the first piece of the fuse element.
- the triggering system characterized in that the second piece of the fuse element consists of a nut; in that the mechanical connection means comprise a thread on the outer face of the second end of the tubular element, on which is mounted the nut, in that the first piece of the fuse element consists of a cover fixed on the lateral face of the nut by said fusible material and in that the means of mechanical cooperation consist in the fact that the second end of said rod is supported on the inner face of said lid.
- This second embodiment is of particular interest in the measure or not only the longitudinal clutter is reduced, but also the transverse bulk in directions perpendicular to the length of the moving rod.
- the triggering system 10 comprises a tubular part 12 of which a first end 14 is provided with a rim 16 which limits an axial hole 18 and a second end 20 which is open.
- the tubular part 12 comprises an external thread 22 to facilitate mounting on a device, for example a ventilation valve.
- a axial displacement rod 24 Inside the tubular part 12 is mounted a axial displacement rod 24 whose end 26 is intended to be secured a device to be controlled and whose second end 28 is equipped with a mechanical stop 30 which is preferably constituted by a washer fixed on the end 28 of the rod 24.
- This rod is in one piece.
- a return spring 32 is mounted around the rod 24 inside the tubular part 12. The first end 34 of the spring bears on the stop 16, while its second end 36 is supported on the mechanical stop 30 of the rod 24.
- the system of trigger is equipped with a fuse element 40 which is, in the mode of considered embodiment, preferably consisting of two metal plates 42 and 44 interconnected by a layer of an adhesive fuse material 46 such that a soldering or soldering material or an adhesive having a melting point at the desired trigger temperature.
- Exhibits 42 and 44 are each equipped with a hole 48 and 50.
- the tubular piece 12 is provided with near its end 20 of a first leg extending in one direction radial 52, while the mechanical stop 30 and therefore the rod 24 are also equipped near their end 28 with a second radial tab 54. ends of the legs 52 and 54 are intended to penetrate the orifices 48 and 50 of the fuse element 40.
- the different elements of the trigger system are dimensioned in such a way that when the system is intact, the spring 32 is completely disposed inside the tubular piece 12 and the mechanical stop 30 closes the open end 20 of this tubular piece. So, spring 32 is completely enclosed within the tubular part 12, in particular because the orifice 18 of the tubular piece has a diameter which is very slightly greater than the diameter of the stem 24.
- the operation of the fuse trigger system is very simple.
- the adhesive material 46 loses its adhesive properties and its mechanical properties and allows the brutal separation of the pieces 42 and 44. This separation releases the leg 54 relative to the tab 52, which allows the relaxation of the spring 32 and therefore the displacement of the rod 24 towards the rear, with reference to FIG.
- the fuse element which bears the reference 60 consists of a flat cover 62 which is fixed on one side lateral 64 of a nut 66.
- the connection between the lateral face 64 and the periphery of the inner face of the plate 62 is made using a layer of an adhesive material 68 which loses its adhesion properties at the predetermined temperature and which is the same nature as the material constituting the layer 46 of the first mode of production.
- the nut 66 is screwed onto the external thread 22 of the tubular piece 12 to its open end 20.
- the plate 62 bears on the end 28 of the rod 24 and compresses the spring inside the tubular part 12.
- the spring 32 is entirely confined inside the tubular piece 12 whose front end is substantially closed by the flange 16 and the rod 24 and whose rear end is closed by the plate 62.
- the transverse bulk of the triggering system is reduced compared to that of the embodiment of Figure 1 since it is limited to the outer diameter of the nut 66.
- FIGS. 5a and 5b show an example of use of the system of triggering 10 to the realization of a ventilation valve 80.
- the body 82 of the valve is shown which constitutes a seat 84 for shutter 86 of the valve.
- the shutter 86 is attached to the end 26 of the rod 24 trigger system.
- the body 82 of the valve is equipped with a system fixing and positioning of the trigger system 10 which comprises preferably radiating arms 88 connecting the body 82 to a threaded axial hub 90.
- the tubular part 12 of the triggering system 10 which in this case comprises the external thread 22 is screwed into the threaded axial hub 90 of the valve.
- a against-nut 92 screwed on the external thread 22 of the tubular part allows adjust the position of the tubular piece 12 relative to the fastening system 88.
- the trigger system with fuse element may have other uses.
- the end 26 of the stem 24 may constitute a retractable latch to maintain in the rest position a piece, for example a shutter, pivotally mounted about an axis parallel to the rod 24 and subjected to the action of a return spring. Under the effect of the temperature, the rod 24 is retracted and allows rotation of the part.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fuses (AREA)
- Safety Valves (AREA)
- Air Bags (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
- un élément tubulaire comportant une première extrémité munie de premiers moyens formant butée et d'un orifice et une deuxième extrémité ouverte, ledit élément tubulaire comportant un filetage externe de réglage en position ;
- une tige montée mobile selon l'axe dudit élément tubulaire présentant une première extrémité qui fait saillie hors dudit orifice et une deuxième extrémité munie de deuxièmes moyens formant butée mécanique ;
- un ressort monté dans l'élément tubulaire autour de ladite tige et présentant une première extrémité en appui sur les premiers moyens formant butée et une deuxième extrémité en appui sur les deuxièmes moyens formant butée ;
- un élément fusible comprenant une première pièce reliée mécaniquement à une deuxième pièce par un matériau fusible à une température prédéterminée ;
- des moyens pour relier mécaniquement la première pièce de l'élément fusible à la deuxième extrémité de ladite pièce tubulaire ; et
- des moyens pour faire coopérer mécaniquement la deuxième pièce de l'élément fusible avec la deuxième extrémité de ladite tige, par quoi ledit ressort est maintenu comprimé au moins partiellement dans ledit élément tubulaire.
- la figure 1 est une vue en coupe partielle d'un système de déclenchement à élément fusible en position de repos ;
- la figure 2 est une vue de détail en perspective montrant un mode préféré de réalisation de l'élément fusible ;
- la figure 3 est une vue du système de déclenchement de la figure 1 après que celui-ci ait fonctionné ;
- la figure 4 est une vue en coupe longitudinale d'un deuxième mode de réalisation du système de déclenchement à élément fusible ; et
- les figures 5A et 5B illustrent l'utilisation du système de déclenchement selon la figure 1 pour réaliser une soupape d'aération.
Claims (9)
- Système de déclenchement à élément fusible, comprenant :un élément tubulaire (12) comportant une première extrémité munie de premiers moyens formant butée (14) et d'un orifice (18) et une deuxième extrémité ouverte ;une tige (24) montée mobile selon l'axe dudit élément tubulaire présentant une première extrémité (26) qui fait saillie hors dudit orifice et une deuxième extrémité (28) munie de deuxièmes moyens (30) formant butée mécanique ;un ressort (32) monté dans l'élément tubulaire autour de ladite tige présentant une première extrémité en appui sur les premiers moyens formant butée et une deuxième extrémité en appui sur les deuxièmes moyens formant butée ; etun élément fusible (40, 60), ledit système se caractérisant en ce queledit élément fusible comprend une première pièce (42, 62) reliée mécaniquement à une deuxième pièce (44, 66) par un matériau fusible (46, 68) à une température prédéterminée ; etdes moyens (52) pour relier mécaniquement la première pièce (42) de l'élément fusible à la deuxième extrémité dudit élément tubulaire (12) ; etdes moyens (54) pour faire coopérer mécaniquement la deuxième pièce (44) de l'élément fusible avec la deuxième extrémité de ladite tige, par quoi ledit ressort est maintenu comprimé au moins partiellement dans ledit élément tubulaire.
- Système de déclenchement selon la revendication 1, caractérisé en ce que ledit ressort (32) est entièrement à l'intérieur dudit élément tubulaire (12) lorsque l'élément fusible (40) est intact.
- Système de déclenchement selon la revendication 2, caractérisé en ce que lorsque l'élément fusible (40) est intact, les deuxièmes moyens formant butée (30) ou ladite deuxième pièce (62) de l'élément fusible (60) obture sensiblement la deuxième extrémité de l'élément tubulaire (12).
- Système de déclenchement selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les deux pièces (44, 46) constituant l'élément fusible sont chacune munies d'un trou et en ce que les moyens de liaison mécanique comprennent une première patte (52) solidaire de la deuxième extrémité de l'élément tubulaire (12) dont l'extrémité libre pénètre dans le trou de la deuxième pièce de l'élément fusible et en ce que les moyens de coopération mécanique comprennent une deuxième patte (54) solidaire de la deuxième extrémité de la tige (24) et dont l'extrémité libre pénètre dans le trou de la première pièce de l'élément fusible.
- Système de déclenchement selon la revendication 4, caractérisé en ce que les deuxièmes moyens formant butée consistent en une rondelle (30) solidaire de la deuxième extrémité de la tige (24), ladite rondelle obturant sensiblement la deuxième extrémité de l'élément tubulaire lorsque l'élément fusible est intact.
- Système de déclenchement selon l'une quelconque des revendications 1 à 3, caractérisé en ce que la deuxième pièce de l'élément fusible (60) consiste en un écrou (66) ; en ce que les moyens de liaison mécanique comprennent un filetage (22) sur la face extrême de la deuxième extrémité de l'élément tubulaire, sur lequel est monté écrou, en ce que la première pièce de l'élément fusible consiste en un couvercle (62) fixé sur la face latérale de l'écrou par ledit matériau fusible (68) et en ce que les moyens de coopération mécanique consistent dans le fait que la deuxième extrémité de ladite tige (12) est en appui sur la face interne dudit couvercle.
- Système de déclenchement selon la revendication 6, caractérisé en ce que ledit élément tubulaire (12) comprend en outre sur sa face externe à proximité de sa deuxième extrémité une butée mécanique (70) pour limiter le vissage de l'écrou sur la portion filetée de l'élément tubulaire.
- Système de déclenchement selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ladite tige (24) est en une seule pièce.
- Système de déclenchement selon l'une quelconque des revendications 1 à 8, caractérisé en ce que ledit élément tubulaire (12) comprend un filetage externe (22) de réglage en position dudit système.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9901912 | 1999-02-17 | ||
FR9901912A FR2789746B1 (fr) | 1999-02-17 | 1999-02-17 | Systeme de declenchement a element fusible |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1029559A1 EP1029559A1 (fr) | 2000-08-23 |
EP1029559B1 true EP1029559B1 (fr) | 2005-08-31 |
Family
ID=9542126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00400434A Expired - Lifetime EP1029559B1 (fr) | 1999-02-17 | 2000-02-16 | Système de déclenchement à élément fusible |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1029559B1 (fr) |
AT (1) | ATE303181T1 (fr) |
DE (1) | DE60022244T2 (fr) |
ES (1) | ES2248025T3 (fr) |
FR (1) | FR2789746B1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1061548A (en) * | 1965-07-22 | 1967-03-15 | Gustaf Harald Bodin | Improvements in or relating to valve devices for ventilation ducts |
US4055829A (en) * | 1975-03-03 | 1977-10-25 | Elsie Manufacturing Company | Fusible links and process for producing same |
FR2372360A1 (fr) * | 1976-11-18 | 1978-06-23 | Mineur Becourt | Dispositif d'obturation a clapet a grande vitesse de reaction |
DE2652879A1 (de) * | 1976-11-20 | 1978-05-24 | Eidmann Juergen | Feuerschutzventil |
US5120152A (en) * | 1990-06-25 | 1992-06-09 | Carmen Gueli | Fusible link |
GB2249479B (en) * | 1990-10-19 | 1994-12-14 | Gilberts | Fire damper |
-
1999
- 1999-02-17 FR FR9901912A patent/FR2789746B1/fr not_active Expired - Fee Related
-
2000
- 2000-02-16 AT AT00400434T patent/ATE303181T1/de not_active IP Right Cessation
- 2000-02-16 DE DE60022244T patent/DE60022244T2/de not_active Expired - Lifetime
- 2000-02-16 ES ES00400434T patent/ES2248025T3/es not_active Expired - Lifetime
- 2000-02-16 EP EP00400434A patent/EP1029559B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE60022244D1 (de) | 2005-10-06 |
FR2789746B1 (fr) | 2001-05-04 |
EP1029559A1 (fr) | 2000-08-23 |
DE60022244T2 (de) | 2006-06-29 |
ATE303181T1 (de) | 2005-09-15 |
ES2248025T3 (es) | 2006-03-16 |
FR2789746A1 (fr) | 2000-08-18 |
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