EP0829275B1 - Schaumhervorbringende Düse für eine Feuerlöschvorrichtung - Google Patents

Schaumhervorbringende Düse für eine Feuerlöschvorrichtung Download PDF

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Publication number
EP0829275B1
EP0829275B1 EP97420153A EP97420153A EP0829275B1 EP 0829275 B1 EP0829275 B1 EP 0829275B1 EP 97420153 A EP97420153 A EP 97420153A EP 97420153 A EP97420153 A EP 97420153A EP 0829275 B1 EP0829275 B1 EP 0829275B1
Authority
EP
European Patent Office
Prior art keywords
foam
head
boss
conduits
head 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 - Lifetime
Application number
EP97420153A
Other languages
English (en)
French (fr)
Other versions
EP0829275A1 (de
Inventor
Daniel Vivier
Roger Laine
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.)
SNC S2E Services
Original Assignee
SNC S2E Services
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Filing date
Publication date
Application filed by SNC S2E Services filed Critical SNC S2E Services
Publication of EP0829275A1 publication Critical patent/EP0829275A1/de
Application granted granted Critical
Publication of EP0829275B1 publication Critical patent/EP0829275B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0018—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with devices for making foam

Definitions

  • the present invention relates to a head generation and projection of foam, especially for a fire extinguisher.
  • Some fire extinguishers contain a fluid, usually a mixture of water and a chemical additive capable of emulsifying with air to form an extinguishing foam.
  • the document GB n ° 2 171 615 describes a head of generation and projection of foam for a device fire extinguisher, having a projection orifice direct from the mixture, this orifice opening into the bottom tubing.
  • Projection heads that include other known devices have the disadvantage of having a complex structure. Indeed, these heads include emulsion chambers with insertion holes air, means for emulsifying the mixture and air, especially turbines or chamber shapes suitable for producing a vortex flow, and screens or sieves, placed inside a tubing of diffusion of the foam.
  • the present invention aims to remedy this disadvantage, by providing a generation head and foam projection, producing good foam quality and quantity, while having a simple structure.
  • the head according to the invention thus does not include any mobile turbine-type unit, no emulsion chamber of complex structure, communicating with the outside by air intake holes, and no grate or screen diffusion.
  • this head can be made of molded synthetic material.
  • the tubing has a shape substantially conical, widening in the direction of the foam projection.
  • the duct openings do not are thus not perpendicular to the direction of projection of the foam, but inclined outwards, according to the inclination of the wall of the tubing. This tilt favors the deflection of the jets by the boss.
  • conduits, walls, openings, the aforementioned boss and tubing are arranged in a socket attached to the free end of the head.
  • the boss has a shape rounded, especially hemispherical, favoring the deflecting the jets and preventing them from breaking before they collide.
  • the spray head includes four conduits.
  • the head includes a projection control valve, actuated by a mechanism.
  • the head has a butt-shaped part and a projection cannon shape, and includes a trigger to control the foam projection.
  • Figure 1 shows the generation 1 head and of foam projection that includes a device fire extinguisher (not shown).
  • This device includes a pressure tank connected to the head 1 by a flexible hose, this tank containing a mixture of water and a chemical additive capable of emulsifying with air at head 1 to form a foam fire extinguisher.
  • This head 1 has an internal body 5, a external housing 6 enveloping the body 5, a valve projection control, actuated by a housed mechanism in the body 5, a socket 7 ensuring the generation of the foam and a ring 8 for mounting this socket 7 on the free end of the body 5.
  • the body 5 and the housing 6 each have a part 5a, 6a forming a stick and a part 5b, 6b forming a projection "cannon".
  • Parts 5a and 5b define a conduit main fluid inlet 10, connected, at the level of the base of part 5a, to flexible hose (not shown) of the device.
  • This conduit 10 is unique at the level of the part 5a and divides in part 5b in two lateral conduits 10a, 10b which join behind the socket 7.
  • this part 5b comprises, between the lateral conduits 10a, 10b, a wall tubular 12 defining an axial bore, this bore being closed at its end opposite to the sleeve 7.
  • the part 5b also includes a housing 13 transverse to this bore, communicating with this bore and opening on the outside of the body 5, on either side of this latest.
  • Part 5b further includes tubing threaded 15, projecting coaxially to the bore of the side of the free end of the head 1, this tubing 15 comprising the sleeve 7 and the ring 8.
  • a spring 16 and a rod 17 are engaged and can slide into the bore.
  • Spring 16 carries against the bottom of the bore and against one end rod 17.
  • the other end of the rod 17 projects from the bore, and comprises a pad 20 of resilient material.
  • the end of the pad 20 has a conical shape, while the face of the socket 7 facing the interior of the head 1 comprises a conical seat 21 of same slope.
  • the end of the pad 20 can come into contact of this conical seat 21 with sealing, and is normally held in this position by the spring 16, this the latter being compressed when the pad 20 is in contact from seat 21.
  • the rod 17 also includes a housing transverse 22, arranged at height and opposite the housing 13.
  • the two housings 13 and 22 are crossed by a trigger 25, pivotally mounted on the body 5 by means of a axis 26.
  • This trigger 25 projects beyond the housing 6 through a slot 27, and comes to bear against the wall of the rod 17 delimiting the housing 22 on the side opposite the free end of the head 1.
  • a pressure exerted on the trigger 25 so bringing it closer to part 6b makes it possible to compress the spring 16 and move the pad 20 away from the seat 21, therefore control the flow of the fluid outwards, through bush 7.
  • the case 6 consists of two half-shells, one of which is partially cut on the figure 1. These two half-shells have flanges 30 body 5 and are assembled to each other by engagement of nipples or screws that includes one of them in corresponding holes 31 arranged in the wall of the other.
  • the ring 8 comprises, for its part, a shoulder able to bear against this shoulder 42 and a thread allowing its screwing on the thread of the tubing 15 so as to clamp the sleeve 7 between it and the end of this tubing 15.
  • the present invention thus makes it possible to obtain this result by means of a head 1 having a very structure simple and inexpensive to manufacture, which allows remedy the disadvantages of generation heads and projection of foam according to the prior art.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Claims (8)

  1. Kopf zum Erzeugen und Ausstoßen von Schaum, insbesondere für ein Feuerlöschgerät, mit einem Stutzen (35) zur Diffusion des erzeugten Schaums; und mindestens zwei für das Schäumen bestimmten Fluid-Zufuhrkanälen (36), die auf dem Umfang des Kopfes (1) regelmäßig verteilt sind; wobei diese Kanäle (36) bei ihrem Austrittsende in Wänden (37) enden, dadurch gekennzeichnet, daß die Wände (37) im wesentlichen senkrecht zu der Ausstoßrichtung des Schaums ausgerichtet sind; wobei die Kanäle in der Basis des Stutzens (35) durch Öffnungen (38) enden, die sich zueinander auf gleicher Höhe befinden; und daß der Kopf darüber hinaus einen gegenüber von diesen Öffnungen (38) angeordneten Wulst (39) aufweist, wobei die Wände (37) dazu bestimmt sind, das Fluid zu dem Wulst (39) hin umzulenken und wobei der Wulst (39) dazu dient, die verschiedenen Strahlen aus Fluid derart abzulenken, daß sie sich in der Basis des Stutzens (35) gegenseitig stoßen.
  2. Kopf nach Anspruch 1, dadurch gekennzeichnet, daß er aus gegossenem Kunststoff besteht.
  3. Kopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Stutzen (35) eine im wesentlichen konische Form hat und sich in der Ausstoßrichtung des Schaums aufweitet.
  4. Kopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß er an seinem freien Ende eine Hülse (7) aufweist, in welcher die genannten Kanäle (36), Wände (37), Öffnungen (38) sowie der vorgenannte Wulst (39) und Stutzen (35) eingearbeitet sind.
  5. Kopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Wulst (39) eine im wesentlichen halbkugelförmige abgerundete Form hat.
  6. Kopf nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß er vier Kanäle (36) aufweist.
  7. Kopf nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß er ein durch einen Mechanismus (16, 17, 25) betätigtes Ausstoß-Steuerventil (20, 21) aufweist.
  8. Kopf nach Anspruch 7, dadurch gekennzeichnet, daß er einen Teil (5a, 6a) in Form eines Pistolengriffs und einen Teil (5b, 6b) in Form eines "Pistolenlaufs" hat und daß er einen Drücker (25) zum Steuern des Schaumausstoßes aufweist.
EP97420153A 1996-08-30 1997-08-28 Schaumhervorbringende Düse für eine Feuerlöschvorrichtung Expired - Lifetime EP0829275B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9610805A FR2752740B1 (fr) 1996-08-30 1996-08-30 Tete de generation et de projection de mousse, notamment pour un appareil extincteur d'incendie
FR9610805 1996-08-30

Publications (2)

Publication Number Publication Date
EP0829275A1 EP0829275A1 (de) 1998-03-18
EP0829275B1 true EP0829275B1 (de) 1999-12-01

Family

ID=9495439

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97420153A Expired - Lifetime EP0829275B1 (de) 1996-08-30 1997-08-28 Schaumhervorbringende Düse für eine Feuerlöschvorrichtung

Country Status (9)

Country Link
US (1) US5921471A (de)
EP (1) EP0829275B1 (de)
AT (1) ATE187088T1 (de)
DE (1) DE69700870T2 (de)
DK (1) DK0829275T3 (de)
ES (1) ES2140194T3 (de)
FR (1) FR2752740B1 (de)
GR (1) GR3032657T3 (de)
PT (1) PT829275E (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200001364T2 (tr) * 1997-11-14 2000-11-21 Concast Standard Ag Sürekli döküm ürününe soğutucu sıvı püskürtmek için delikli başlık.
EP1707243A1 (de) 2005-03-31 2006-10-04 OSNA Technologien GmbH Düsensprücher für eine Feuerlöscher kleiner Kapacität
USD822457S1 (en) * 2017-03-29 2018-07-10 BB & F Holding Company LLC Spray polyurethane foam jacket clip with additional support
USD822456S1 (en) * 2017-03-29 2018-07-10 BB & F Holding Company LLC Spray polyurethane foam jacket clip
US10882227B2 (en) * 2018-05-23 2021-01-05 Faurecia Interior Systems, Inc. Foam mix-head bushing and method of manufacturing a vehicle interior panel with the bushing

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2289352A (en) * 1938-12-22 1942-07-14 Cardox Corp Fire extinguisher discharge apparatus
US2527891A (en) * 1946-10-01 1950-10-31 Fmc Corp Valved nozzle for fire fighting spray guns
BE481094A (de) * 1947-03-11
US2621076A (en) * 1948-06-07 1952-12-09 American Marsh Pumps Inc Spray gun for fire apparatus and the like
US2792260A (en) * 1956-12-12 1957-05-14 Scovill Manufacturing Co Hose nozzle
IT953065B (it) * 1970-07-20 1973-08-10 Knapp Alfons Dispositivo perfezionato per aerea re un getto d acqua
US3693884A (en) * 1971-02-05 1972-09-26 Duane S Snodgrass Fire foam nozzle
US3836076A (en) * 1972-10-10 1974-09-17 Delavan Manufacturing Co Foam generating nozzle
GB2171615A (en) * 1985-03-01 1986-09-03 Calmar Inc Foam producing
US5358179A (en) * 1993-08-18 1994-10-25 The Procter & Gamble Company Atomization systems for high viscosity products
CA2106526A1 (en) * 1993-09-20 1995-03-21 Allen Goodine Foam producing venturi

Also Published As

Publication number Publication date
EP0829275A1 (de) 1998-03-18
FR2752740B1 (fr) 1998-10-23
PT829275E (pt) 2000-04-28
DK0829275T3 (da) 2000-05-22
GR3032657T3 (en) 2000-06-30
ATE187088T1 (de) 1999-12-15
FR2752740A1 (fr) 1998-03-06
US5921471A (en) 1999-07-13
DE69700870D1 (de) 2000-01-05
ES2140194T3 (es) 2000-02-16
DE69700870T2 (de) 2000-03-16

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