EP0384068A1 - Dispositif de déclanchement automatique pour atomiseur - Google Patents

Dispositif de déclanchement automatique pour atomiseur Download PDF

Info

Publication number
EP0384068A1
EP0384068A1 EP89310752A EP89310752A EP0384068A1 EP 0384068 A1 EP0384068 A1 EP 0384068A1 EP 89310752 A EP89310752 A EP 89310752A EP 89310752 A EP89310752 A EP 89310752A EP 0384068 A1 EP0384068 A1 EP 0384068A1
Authority
EP
European Patent Office
Prior art keywords
post
activator
fusible element
lever
sprinkler head
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.)
Withdrawn
Application number
EP89310752A
Other languages
German (de)
English (en)
Inventor
Barry Francis Byrne
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.)
Wormald International Ltd
Original Assignee
Wormald International Ltd
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
Priority claimed from AU10455/88A external-priority patent/AU1045588A/en
Application filed by Wormald International Ltd filed Critical Wormald International Ltd
Publication of EP0384068A1 publication Critical patent/EP0384068A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • A62C37/12—Releasing means, e.g. electrically released heat-sensitive with fusible links

Definitions

  • This invention relates to automatic sprinkler heads serving for fire protection in enclosed spaces such as industrial or commercial buildings, or domestic dwellings.
  • a heat responsive activator for an automatic sprinkler head having a valve member for arresting the flow of fluid therefrom, comprising lever means which in a standby condition retains said valve member in a closed condition; and a control assembly engagable with said lever means to retain it in its standby condition and including relatively axially displaceable parts, and a fusible element normally functioning to maintain said parts in an axially expanded condition, said fusible element reacting when subjected to a predetermined temperature to permit axial contraction of said parts to thereby release said lever together with said control assembly for discharge from said sprinkler head.
  • the automatic sprinkler head 5 shown in Figs. 1 and 2 comprises a housing 6 having a threaded end 7 for screwing into an adaptor (not shown) on a water supply line, and a deflector 8 supported spaced therefrom by depending arsm 9.
  • a central, internally threaded boss 10 is supported between the arms 9 and holds the deflector plate 8.
  • An adjustment screw 11 is threaded into the boss 10 and a valve plug 12, together with a packing ring 13, when held against the open mouth of the water passage 14 through the head 5, serve to obstruct water flow therefrom onto the deflector 8 for discharge in a predetermined spray pattern over a fire protected area.
  • a control, or activator, assembly 15 effects such closure of the valve plug 12.
  • control assembly 15 is of a conventional form except for the form of control assembly 15 and cooperating lever means that is utilised.
  • a soldered element or a frangible glass bulb has been used for the control assembly 15.
  • These bulbs contain a liquid possessing a high temperature coefficient of expansion, but due to the poor heat conductivity of glass, they are relatively slow acting in response to the occurrence of a fire.
  • the assembly 15 is constructed of few parts readily capable of assembly, even by automatic machinery, and responds quickly to temperature variation.
  • the assembly 15 consists of a laminar construction of two juxtaposed and contacting heat conducting circular fins 16 and 17 coaxial with and contacting an annulus 23 (Fig. 3) of eutectic solder.
  • the fins 16 and 17 and solder annulus 23 as well as heat insulators, together with an abutting retaining ring 18 are assembled upon a post 19.
  • a separate bent and bifurcated lever 20 is a further component of the control assembly 15.
  • this assembly is of simple form and readily capable of being mass produced by automatic machinery. Assembly of the activator 15 upon the sprinkler head 5 can also be achieved simply, preferably by automatic machinery. To achieve this the activator assembly 15 is positioned with one end of the post 19 engaged with the valve plug 12 while the bent lever 20 is inserted between the retaining ring 18 and the adjustment screw 11 on the sprinkler head 5, with a pointed end 21 of the post 9 engaged within a peripheral groove 22 in the lever 20. By suitable adjustment of the screw 11, therefore, the water passage 14 is sealed closed by the valve plug 12. The manner in which automatic operation of the sprinkler head 5 occurs will be made clear in the following description of the second embodiment shown in Fig. 3.
  • a similarly formed control assembly 15 is utilised which from Fig. 3 can be seen to incorporate the solder annulus 23 upon a sleeve 24 which has an enlarged head 25.
  • the heat fins 16 and 17 have hub portions 26 in contact with each other and between the solder annulus 23 and the head 25.
  • a heat insulating washer 27 abuts the outer face of the solder annulus 23 and separates it from the retaining ring 18.
  • the sleeve 24 is of heat insulating material.
  • the retaining ring 18 surrounds the outer end of the sleeve 24 extending beyond the insulating washer 27.
  • a sprinkler head (not shown) of the components shown in this drawing will be achieved.
  • all of the components may be pre-assembled upon a modified post 9A having a securing nut 28 at one threaded end 30 and an opposite end 29 provided with a projecting double chamfered annular rib 29A.
  • a pair of diametrally opposed levers 31 and 32 are captured upon the post 9A by V-grooved inner ends 33 which partly encircle the post 9A.
  • Capturing of the levers 31 and 32 is effected by screwing down the nut 28 so that diverging, external part conical surfaces 34 provided to one side of the inner ends of the levers 31 and 32 engage with an inner peripheral edge 18A of the retaining ring 18 while tha peak 29B of the rib 29A serves as a fulchum for the levers 31 and 32.
  • Mounting of the activator to a sprinkler head 5, with the nut 28 loosened, is achieved by engaging the outer end 35 of one of the levers 31 and 32 with the valve plug 12 (Figs. 1 and 2), and the outer end 35 of the other lever with the inner end of the adjustment screw 11. The nut 28 is then tightened to secure the assembly.
  • the axes of the levers 31 and 32 are tilted with respect to each other so that when the activator is mounted their conical surfaces 34 bear with force against the ring 18 due to water pressure tending to increase the tilt of the levers 31 and 32.
  • the solder annulus 23 When the solder annulus 23 responds to a predetermined temperature and melts it will flow from the space between the hubs 26 of the fins 16 and 17 and the insulating washer 27.
  • the retaining ring 18 will then be forceably displaced towards the hubs 26 by the force imposed by the conical surfaces 34, which under the pressure of water in the passageway 14 will cause the levers 31 and 32 to pivot, or tilt, about the fulcrum 29B to narrow the spacing between the ends 35 of the levers 31 and 32.
  • the entire activator assembly 15 will be discharged laterally of the sprinkler head 5 and the valve plug will be released.
  • FIG. 4 A third embodiment is depicted in Fig. 4 where discharge upon activation of the assembly 15A is effected axially of the sprinkler head 5.
  • the deflector plate 8A is fixed upon a pair of slidable extension rods 36 and engages the valve plug 12A which includes a domed spring diaphragm valve 37 urging the deflector 8A downwardly.
  • a control assembly 15A incorporates a pair of levers 31A and 32A of modified form.
  • the post 9B preferably includes a head 28B adjacent the levers 31A and 32A, preferably with an adjustment nut 30A at its opposite end accessible externally of the head 5.
  • the levers 31A and 32A also include inclined ramps 34A while the outer ends 35A of the levers engage within slots 38 internally of the sprinkler head housing 6.
  • a domed spring 39 abuts the levers 31A and 32A and applies pressure to the underside of the deflector 8A to effect closure of the valve plug 12A.
  • the retaining ring 18 When the solder annulus 23 responds to a predetermined temperature the retaining ring 18 will withdraw from the levers 31A and 32A and allow them to pivot about the post 9B to narrow the spacing between their ends 35A.
  • the levers 31A and 32A do not require to be tilted with respect to each other. This will have the effect, under the pressure of the domed spring 39 and the internal water pressure in the passage 14, to unseat the levers 31A and 32A from their grooves 38 for axial discharge downwardly from the sprinkler head 5.

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)
EP89310752A 1988-10-18 1989-10-18 Dispositif de déclanchement automatique pour atomiseur Withdrawn EP0384068A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU10455/88A AU1045588A (en) 1986-11-21 1987-11-20 Device for opening a wrapped roll of coins
AU10455/88 1988-10-18

Publications (1)

Publication Number Publication Date
EP0384068A1 true EP0384068A1 (fr) 1990-08-29

Family

ID=3701436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89310752A Withdrawn EP0384068A1 (fr) 1988-10-18 1989-10-18 Dispositif de déclanchement automatique pour atomiseur

Country Status (1)

Country Link
EP (1) EP0384068A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015142809A (ja) * 2015-05-12 2015-08-06 能美防災株式会社 スプリンクラヘッド

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE200282C (fr) *
US4491182A (en) * 1983-01-05 1985-01-01 Central Sprinkler Corporation Automatic sprinkler
US4508175A (en) * 1982-11-10 1985-04-02 Central Sprinkler Corporation Flush pendant or flush horizontal automatic sprinkler head
GB2155328A (en) * 1984-03-13 1985-09-25 Grinnell Fire Protection Fire protection sprinkler head
US4651832A (en) * 1983-06-23 1987-03-24 Masanove Kubo Flash type sprinkler head
WO1988006469A1 (fr) * 1987-03-02 1988-09-07 The Reliable Automatic Sprinkler Co., Inc. Crepine d'incendie decorative a reaction rapide

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE200282C (fr) *
US4508175A (en) * 1982-11-10 1985-04-02 Central Sprinkler Corporation Flush pendant or flush horizontal automatic sprinkler head
US4491182A (en) * 1983-01-05 1985-01-01 Central Sprinkler Corporation Automatic sprinkler
US4651832A (en) * 1983-06-23 1987-03-24 Masanove Kubo Flash type sprinkler head
GB2155328A (en) * 1984-03-13 1985-09-25 Grinnell Fire Protection Fire protection sprinkler head
WO1988006469A1 (fr) * 1987-03-02 1988-09-07 The Reliable Automatic Sprinkler Co., Inc. Crepine d'incendie decorative a reaction rapide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015142809A (ja) * 2015-05-12 2015-08-06 能美防災株式会社 スプリンクラヘッド

Similar Documents

Publication Publication Date Title
US4976320A (en) Concealed sprinkler with drop down deflector assembly, and improved fusible valve lever assembly
US4880063A (en) Adjustable concealed sprinkler
US5094298A (en) Fire sprinkler apparatus
US4766961A (en) Decorative quick response sprinkler
US5083616A (en) Ceiling sprinkler
US5097906A (en) Concealed automatic sprinkler
KR101821829B1 (ko) 스프링클러 헤드
US3874455A (en) Automatic sprinkler valve
US4217961A (en) Water sprinklers
US5299645A (en) Fire extinguisher sprinkler construction
US3783947A (en) Automatic sprinkler head
US5022468A (en) Automatic sprinkler activator
US4651832A (en) Flash type sprinkler head
US4922944A (en) Melting safety device for gas system of hydropneumatic pressure accumulators
US3838705A (en) Heat responsive safety device for gate valves
US4343364A (en) Sprinkler head construction
US4623023A (en) Sprinkler head
WO2007108899A2 (fr) Gicleur avec levier limité en mouvement
US4570720A (en) Sprinkler head
EP0384068A1 (fr) Dispositif de déclanchement automatique pour atomiseur
CA1048084A (fr) Tete d'extincteur automatique
KR960008948Y1 (ko) 스프링 쿨러헤드
US4298068A (en) Heat sensitive release devices
JP3082075B2 (ja) スプリンクラーヘッド用感熱分解部分
US4899777A (en) Thermally activated pressure relief plug

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900925

17Q First examination report despatched

Effective date: 19911202

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19920414