EP0507665B1 - Atomizing head of fire extinguisher - Google Patents
Atomizing head of fire extinguisher Download PDFInfo
- Publication number
- EP0507665B1 EP0507665B1 EP92400890A EP92400890A EP0507665B1 EP 0507665 B1 EP0507665 B1 EP 0507665B1 EP 92400890 A EP92400890 A EP 92400890A EP 92400890 A EP92400890 A EP 92400890A EP 0507665 B1 EP0507665 B1 EP 0507665B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- diffuser
- atomising head
- head according
- block
- outlet
- 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
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
Definitions
- the invention relates to a water fire extinguisher and more specifically relates to the spray head of extinguishing agent.
- the extinguishers used until now consist of a reservoir filled with fluid - generally water - which is closed at its top by a distribution head having mechanical means capable of admitting water into a spray head as soon as a user acted on the trigger gun. Water is sprayed outside by an outlet diffuser whose role is to orient and focus the jet of extinguishing agent to increase its range.
- the known diffusers however have some drawbacks. Apart from their brittleness to impact, they are often obstructed, especially when using a spray can itself to clear, for example, calcined products. And then the flow rates and the ranges of the jets emitted by the usual rods are insufficient while the outlet pressures could allow better performance.
- the invention provides a spray head equipped with a diffuser of new design which avoids the aforementioned drawbacks and considerably improves the spraying range.
- the main object of the invention therefore consists of a sprinkler spray head having the characteristics according to claim 1.
- the emission orifice is delimited by an inner ring whose inner diameter is substantially half the diameter of the outer crown, a circular groove being formed between the two crowns.
- the mouths of the orifices on the downstream side of the pellet being located side by side and at the center of said pellet.
- the angle of convergence of the two emission orifices is approximately 15 ° relative to the axis of the emission conduit
- the spray rod 1 shown in Figure 1 is advantageously made of metal which allows it to be used if necessary as a cutter. It has at one end of a nozzle 2 for connection to a trigger blowgun and at the other end of a diffuser defined as a whole by the reference 3. On the side of the rod is provided a hook 4. According to a variant not shown, the diffuser 3 is connected by a suitable nozzle, directly at the end of the blow gun.
- the shape and structure of the diffuser 3 appear more clearly in FIG. 2. Its general outlet axis forms an angle ⁇ of 60 ° with the conduit 5 of the rod 1.
- the outer body of the diffuser itself has a general shape slightly tapered in decreasing diameter ending in an opening delimited by a outer ring 6. Set back therefrom the emission orifice 7 is delimited by an inner ring 17 whose internal diameter on the one hand is substantially half the diameter of the crown 6, and on the other hand is substantially equal to the height of the withdrawal relative to the outer ring 6. A circular groove 8 is formed between the two rings.
- the transmission orifice is supplied by a transmission conduit 9 which communicates with the conduit 5
- a diffusion patch 10 better visible in FIGS. 3 and 4.
- This patch is a small plastic part of general cylindrical shape crossed by two small orifices 11 converging downstream of the diffuser. These orifices open upstream between two lateral wings 12 of the patch, two small shoulders 13 of which serve to position the patch at the upstream inlet of the emission conduit.
- the two mouths 11a of the orifices 11 are spaced from one another while on the downstream side the mouths 11b are located side by side, in the center of the patch.
- the angle of convergence of the two emission orifices 11 is approximately 15 ° relative to the axis of the conduit.
- the patch 10 has a thickness which represents and occupies approximately one fifth of the total length of the emission conduit 9. Since it is housed at the bottom of said conduit, this means that the jets of extinguishing agent coming from the orifices 11 converge inside the emission conduit, quite far from its orifice 7. This creates a plentiful effect of the diffuser and makes it possible to increase the range of the jet with an improved regular flow.
- the rod 1 itself is made of metal makes it more resistant and insensitive to heat, and it can be used to stir up debris without risk of obstruction of the diffuser, because the outer ring 6 ensures effective protection of the emitting orifice set back.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Nozzles (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Description
L'invention se rapporte à un extincteur d'incendie à eau et a plus précisément pour objet la tête pulvérisatrice d'agent extincteur. Les extincteurs utilisés jusqu'à présent sont constitués d'un réservoir rempli de fluide - généralement de l'eau - qui est fermé à son sommet par une tête de distribution disposant de moyens mécaniques aptes à admettre l'eau dans une tête pulvérisatrice dès qu'un utilisateur a agi sur la soufflette de déclenchement. L'eau est projetée à l'extérieur par un diffuseur de sortie dont le rôle est d'orienter et de focaliser le jet d'agent extincteur pour en augmenter la portée.The invention relates to a water fire extinguisher and more specifically relates to the spray head of extinguishing agent. The extinguishers used until now consist of a reservoir filled with fluid - generally water - which is closed at its top by a distribution head having mechanical means capable of admitting water into a spray head as soon as a user acted on the trigger gun. Water is sprayed outside by an outlet diffuser whose role is to orient and focus the jet of extinguishing agent to increase its range.
Les diffuseurs connus présentent cependant quelques inconvénients. Hormis leur fragilité aux chocs, ils sont souvent obstrués notamment quand on utilise une canne pulvérisatrice elle-même pour déblayer par exemple des produits calcinés. Et puis les débits et les portées des jets émis par les cannes habituelles sont insuffisants alors que les pressions de sortie pourraient permettre de meilleures performances.The known diffusers however have some drawbacks. Apart from their brittleness to impact, they are often obstructed, especially when using a spray can itself to clear, for example, calcined products. And then the flow rates and the ranges of the jets emitted by the usual rods are insufficient while the outlet pressures could allow better performance.
C'est pourquoi l'invention propose une tête pulvérisatrice équipée d'un diffuseur de conception nouvelle qui évite les inconvénients précités et améliore considérablement la portée de la pulvérisation.This is why the invention provides a spray head equipped with a diffuser of new design which avoids the aforementioned drawbacks and considerably improves the spraying range.
L'objet principal de l'invention consiste par conséquent en une tête pulvérisatrice d'extincteur présentant les caractéristiques selon la revendication 1. Avantageusement, l'orifice d'émission est délimité par une couronne intérieure dont le diamètre intérieur est sensiblement la moitié du diamètre de la couronne extérieure, une gorge circulaire étant ménagée entre les deux couronnes.The main object of the invention therefore consists of a sprinkler spray head having the characteristics according to
Selon une caractéristique particulière de l'invention, les embouchures des orifices du côté aval de la pastille se trouvant côte à côte et au centre de ladite pastille.According to a particular characteristic of the invention, the mouths of the orifices on the downstream side of the pellet being located side by side and at the center of said pellet.
Avantageusement, l'angle de convergence des deux orifices d'émission est d'environ 15° par rapport à l'axe du conduit d'émissionAdvantageously, the angle of convergence of the two emission orifices is approximately 15 ° relative to the axis of the emission conduit
D'autres caractéristiques particulières et avantages de l'invention seront perçus à la lecture de la description suivante d'une forme de réalisation faisant référence aux dessins annexés qui représentent :
- Figure 1 une vue d'ensemble d'une tête pulvérisatrice montée en bout d'une canne.
- Figure 2 une vue de détail en coupe du diffuseur.
- Figures 3 et 4 des vues en coupe verticale et transversale à plus grande échelle de la pastille de diffusion.
- Figure 1 an overview of a spray head mounted at the end of a cane.
- Figure 2 a detail view in section of the diffuser.
- Figures 3 and 4 views in vertical and cross section on a larger scale of the diffusion patch.
La canne pulvérisatrice 1 représentée à la figure 1 est avantageusement réalisée en métal ce qui lui permet de pouvoir servir si nécessaire d'outil de déblai. Elle dispose à une extrémité d'un embout 2 de raccordement à une soufflette de déclenchement et à l'autre extrémité d'un diffuseur défini dans son ensemble par la référence 3. Sur le côté de la canne est prévu un crochet 4. Selon une variante de réalisation non représentée, le diffuseur 3 est raccordé par un embout approprié, directement à l'extrémité de la soufflette.The
La forme et la structure du diffuseur 3, apparaissent plus clairement sur la figure 2. Son axe général de sortie forme un angle α de 60° avec le conduit 5 de la canne 1. Le corps extérieur du diffuseur proprement dit a une forme générale légèrement tronconique de diamètre décroissant se terminant par une ouverture délimitée par une couronne extérieure 6. En retrait de celle-ci l'orifice d'émission 7 est délimité par une couronne intérieure 17 dont le diamètre intérieur d'une part est sensiblement la moitié du diamètre de la couronne 6, et d'autre part est sensiblement égal à la hauteur du retrait par rapport à la couronne extérieure 6. Une gorge circulaire 8 est ménagée entre les deux couronnes. L'orifice d'émission est alimenté par un conduit d'émission 9 qui communique avec le conduit 5The shape and structure of the
A la base du conduit d'émission, à proximité immédiate du coude de jonction avec le conduit 5 de la canne, est intégrée une pastille de diffusion 10 mieux visible sur les figures 3 et 4. Cette pastille est une petite pièce en matière plastique de forme générale cylindrique traversée par deux petits orifices 11 convergents vers l'aval du diffuseur. Ces orifices débouchent en amont entre deux ailes latérales 12 de la pastille dont deux petits épaulements 13 servent à positionner la pastille à l'entrée amont du conduit d'émission. Du côté amont les deux embouchures 11a des orifices 11 sont écartées l'une de l'autre tandis que du côté aval les embouchures 11b se trouvent côte à côte, au centre de la pastille. L'angle de convergence des deux orifices d'émission 11 est d'environ 15° par rapport à l'axe du conduit. On notera que la pastille 10 a une épaisseur qui représente et occupe environ le cinquième de la longueur totale du conduit d'émission 9. Puisqu'elle est logée au fond dudit conduit, cela veut dire que les jets d'agent extincteur issus des orifices 11 convergent à l'intérieur du conduit d'émission, assez loin de son orifice 7. Cela crée un effet foisonnant du diffuseur et permet d'augmenter la portée du jet avec un débit régulier amélioré.At the base of the emission conduit, in the immediate vicinity of the junction elbow with the
Le fait que la canne 1 elle-même soit réalisée en métal la rend plus résistante et insensible à la chaleur, et on peut s'en servir pour remuer les débris sans risque d'obstruction du diffuseur, du fait que la couronne extérieure 6 assure une protection efficace de l'orifice d'émission disposé en retrait.The fact that the
Claims (7)
- Atomising head of an extinguisher mounted at the end of a bellows and ending in a diffuser (3), of which the outlet orifice (7) for the extinguishing agent through the diffuser is located recessed and in the interior of a ring (6) terminating the exterior body of the said diffuser, characterised in that the outlet conduit (9) for the extinguishing agent towards the outlet orifice is closed by a diffuser block (10) crossed by at least two orifices (11) which converge towards the mouth of the diffuser and which, on the upstream side, open between two lateral wings (12) of the block and in that the said block is located at the bottom of the outlet conduit and occupies about one fifth of its total length.
- Atomising head according to Claim 1, characterised in that the exterior body of the diffuser (3) has a slightly frusto-conical form of decreasing diameter and ending with the ring (6).
- Atomising head according to Claims 1 and 2, characterised in that the outlet orifice (7) of the diffuser (3) is surrounded by an interior ring (17), the internal diameter of which is substantially half of the diameter of the exterior ring (6), a circular groove (8) being provided between the two rings.
- Atomising head according to Claims 1 to 3, characterised in that the diffuser (3) is mounted at the end of a metallic atomising rod (1) connected to the bellows.
- Atomising head according to Claims 1 to 3, characterised in that the diffuser (3) is mounted directly at the end of the bellows.
- Atomising head according to Claim 1, characterised in that the angle of convergence of the two outlet orifices (11) is around 15° with respect to the axis of the outlet conduit (9).
- Atomising head according to Claim 1, characterised in that the wings (12) of the diffuser block (10) are provided with small shoulders (13) serving to position the block at the upstream entry of the outlet conduit (9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9104161A FR2674772B1 (en) | 1991-04-05 | 1991-04-05 | SPRAYER HEAD OF FIRE EXTINGUISHER. |
FR9104161 | 1991-04-05 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0507665A1 EP0507665A1 (en) | 1992-10-07 |
EP0507665B1 true EP0507665B1 (en) | 1996-07-10 |
Family
ID=9411516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92400890A Expired - Lifetime EP0507665B1 (en) | 1991-04-05 | 1992-03-31 | Atomizing head of fire extinguisher |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0507665B1 (en) |
DE (1) | DE69212029T2 (en) |
ES (1) | ES2092071T3 (en) |
FR (1) | FR2674772B1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2364848A (en) * | 1944-01-19 | 1944-12-12 | Gordon F Hurst | Fog nozzle |
US2388508A (en) * | 1944-03-04 | 1945-11-06 | Timpson Lewis G Morris | Nozzle |
AU473702B2 (en) * | 1971-08-13 | 1976-07-01 | Ransburg Electro-Coating Corp | Apparatus for and method of spraying different coloured powders |
DE3337851A1 (en) * | 1983-10-18 | 1985-04-25 | Siemens AG, 1000 Berlin und 8000 München | Process for coating the surface of the semiconductor substrate of a solar cell |
US4943005A (en) * | 1989-07-26 | 1990-07-24 | Illinois Tool Works, Inc. | Rotary atomizing device |
-
1991
- 1991-04-05 FR FR9104161A patent/FR2674772B1/en not_active Expired - Fee Related
-
1992
- 1992-03-31 ES ES92400890T patent/ES2092071T3/en not_active Expired - Lifetime
- 1992-03-31 DE DE69212029T patent/DE69212029T2/en not_active Expired - Fee Related
- 1992-03-31 EP EP92400890A patent/EP0507665B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0507665A1 (en) | 1992-10-07 |
DE69212029D1 (en) | 1996-08-14 |
FR2674772A1 (en) | 1992-10-09 |
FR2674772B1 (en) | 1993-12-24 |
ES2092071T3 (en) | 1996-11-16 |
DE69212029T2 (en) | 1997-08-14 |
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