EP0956102B1 - A sprinkler head triggering apparatus - Google Patents
A sprinkler head triggering apparatus Download PDFInfo
- Publication number
- EP0956102B1 EP0956102B1 EP96907836A EP96907836A EP0956102B1 EP 0956102 B1 EP0956102 B1 EP 0956102B1 EP 96907836 A EP96907836 A EP 96907836A EP 96907836 A EP96907836 A EP 96907836A EP 0956102 B1 EP0956102 B1 EP 0956102B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- valve
- triggering apparatus
- valve piston
- channel
- 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
- 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
-
- 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
Definitions
- the present invention refers to a sprinkler head triggering apparatus, comprising a spray nozzle with an actuator being releasable by heating to a certain temperature, and which normally holds a valve piston in a closed position against a valve seat, which valve piston, at release of the actuator, is movable in a piston sleeve in the direction away from said seat, for opening a flow passage from a feed line for pressurized water to the spray nozzle.
- Sprinkler heads are used in sprinkler systems for fire extinguishing inside plants, buildings and on ships.
- a triggering device comprising an actuator, e.g. a glass bulb which is actuated by heating to a high ambient temperature.
- an actuator e.g. a glass bulb which is actuated by heating to a high ambient temperature.
- WO-A-9321998 it is also known from WO-A-9321998 to provide such a glass bulb with an electrode which may explode the bulb electrically by remote control, e.g. by a signal from a smoke detector or for functional testing.
- a drawback with sprinkler systems which are equipped with such actuator means is that the functional testing of the system is very difficult to perform. For example, each bulb must be exchanged and the restoration of the system to normal function thus takes a long time. Normally there are regulations for performing such function testing according to a certain regularity.
- One purpose of the present invention is therefore to provide a triggering apparatus which can be released directly both mechanically by means of a heat fuse, and also by means of electrical remote control, e.g. via a smoke detector, without the need for particular flow valves.
- Another object is to provide a triggering apparatus which is simple to test functionally.
- the flow passage is openable in the normal closed position of the valve piston with intact actuator, via a remote control operated pilot piston, that the valve piston is provided with a central bore and a first angular passage, and that the central bore and the first angular passage together with a second annular passage through a bulb screw, and a space form the flow passage which may be opened by the pilot piston.
- the triggering apparatus according to the invention is in the following embodiment shown together with a sprinkler head of a special high pressure type, but the invention is not limited to this type of sprinkler nozzles.
- the nozzle comprises a holder 10 which forms an attachment for a nozzle head 11.
- This head 11 is in its turn mounted in the holder 10 by means of a bulb screw 12 which projects with one of its ends into the holder and which carries a bulb protector 13 at its other end.
- a glass bulb 14 is mounted at the outer end of a valve piston 15 which is movable journalled inside the bulb screw 12, in such a way that the piston 15 is held in a closed position against a valve seat.
- This valve seat is formed by a conical part 16 of a secondary piston 17.
- the glass bulb 14 If the glass bulb 14 is subjected to heat above a certain temperature, e.g. 70°C, the bulb breaks and the valve piston 15 is able to move in the direction downward in Fig. 1, by the action of a fluid pressure prevailing within the space 18. This pressure is transmitted to the space via a feed line which is not shown in the drawing and which is connected at right angle to said space, acting against the end edge of said valve piston 15, which in this end portion is provided with an axially projecting, central bore 19.
- a feed line which is not shown in the drawing and which is connected at right angle to said space, acting against the end edge of said valve piston 15, which in this end portion is provided with an axially projecting, central bore 19.
- valve piston 15 when the valve piston 15 is pressed away from the seat of the secondary piston 17, water penetrates into the central bore 19 and flows further via a first angular passage 20 through the piston wall and a second angular passage 21 through the bulb screw 12 into a space 22 between the holder 10 and the sprinkler nozzle head 11.
- the above described working process takes place when the glass bulb is heated above a certain temperature.
- a pressure detecting valve which starts pumping for supply of sprinkler water with a high pressure, e.g. 200 bar.
- the secondary piston 17 is movable journalled in a piston sleeve 24 inside the holder 10, which piston sleeve is coaxial with the guide for the valve piston 15 in the bulb screw 12.
- a helical spring 25 rest on a angle shoulder 26 inside a pilot piston cylinder 27 which is screwed on to the upper end of the holder 10.
- the spring 25 presses with a small force against an end edge 28 on upper side of the secondary piston, as it is shown in Fig. 1, or the left side as it is shown in Fig. 2.
- the secondary piston 17 is provided with a first channel 29, which between the two ends of the two ends of the piston 17 and which forms a connection between the space 18 at one side of the piston, and the space 30 which houses the helical spring 25, so that equal pressure prevails on both ends of the piston.
- the secondary piston 17 is provided with a second channel 31 arranged in parallel, which has a larger cross section than the first channel 29. This second channel 31 runs along the centre axis of the piston and is normally closed by a pilot piston 32 which is movable arranged inside the pilot piston cylinder 27, coaxial with the valve piston 15 and the secondary piston 17.
- the pilot piston 32 is normally held in its closed position against the outlet of the second channel 31 of the secondary piston 17 by the action of a helical spring 33. Also, the pilot piston is manoeuvrable by means of a solenoid 34 which is electrically controlled via a cable connection 35.
- This flow may be interrupted by a deactivation of the solenoid. This shuts off the channel 31 and the secondary piston 17 is pressed down in Fig. 1 against the end of the valve piston 15 and closes the bore 19.
- the functional testing can be made by means of a short activation of the solenoid.
- valve piston, the secondary piston and the pilot piston do not have to be coaxially arranged along a common longitudinal axis.
- the electrically controlled release of the sprinkler head do not have to take place via a secondary piston, but the pilot piston may act directly against the valve piston.
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)
- Catching Or Destruction (AREA)
- Nozzles (AREA)
Abstract
Description
- Fig. 1
- is a partly sectioned view of a triggering apparatus designed in accordance with the invention,
- Fig. 2
- shows in a slightly larger scale a secondary piston belonging to the triggering apparatus,
- Fig. 3
- shows a valve piston belonging to the triggering apparatus, and
- Fig. 4
- shows a bulb screw belonging to the triggering apparatus.
Claims (9)
- A sprinkler head triggering apparatus, comprising a spray nozzle with an actuator (14) being releasable by heating to a certain temperature, and which normally, via a bulb screw (12), holds a valve piston (15) in a closed position against a valve seat, which valve piston, at release of the actuator, is movable in a piston sleeve in the direction away from said seat, for opening a flow passage (19-22) from a feed line for pressurized water to the spray nozzle,
characterized in that the flow passage (19-22) is openable in the normal, closed position of the valve piston (15) with intact actuator (14), via a remote control operated pilot piston (32), that the valve piston is provided with a central bore (19) and a first angular passage (20), and that the central bore and the first angular passage together with a second angular passage (21) through a bulb screw (12), and a space (22) form the flow passage which may be opened by the pilot piston (32). - A triggering apparatus according to claim 1,
characterized in that the pilot piston (32) is movable mounted inside a piston sleeve between a secondary piston (17) and at least one spring means (33). - A triggering apparatus according to claim 2,
characterized in that the valve piston (15) is coaxially arranged with the pilot piston (32), that the secondary piston (17) is located between the pilot piston (32) and the valve piston (15), and that the valve piston is displaced from its resting position by the action of a fluid pressure acting on one side of said valve piston. - A triggering apparatus according to claim 2 or 3,
characterized in that one end of the secondary piston (17) constitutes a seat for the valve piston (15). - A triggering apparatus according to claim 4,
characterized in that the secondary piston (17) is provided with a first channel (29) with a small cross section, said first channel running through this piston and transmitting the fluid pressure from one end of the piston to the other. - A triggering apparatus according to claim 5,
characterized in that the secondary piston (17) also is provided with a second channel (31) with a larger cross section, which second channel also runs from one end of the piston to the other. - A triggering apparatus according to claim 6,
characterized in that the second channel (31) can be opened and closed by means of the pilot piston (32), wherein the opening of this channel leads to a pressure reduction at the opposite end of the secondary piston (17) with reference to the seat, so that said secondary piston is displaced in the direction from the valve piston (15) by the pressure difference, for opening of the flow passage (19-22) from the feed line for pressurized water to the spray nozzle. - A triggering apparatus according to any of the above claims, characterized in that the pilot piston (32) is manoeuvrable by means of an electromagnet (34).
- A triggering apparatus according to any of the preceding claims, characterized in that the feed line for pressurized water is directly connected, without particular valve means, to one or more feed pumps via a pressure detector which starts said pump when detecting a change in pressure.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9500920A SE504325C2 (en) | 1995-03-16 | 1995-03-16 | Sprinkler head release device |
SE9500920 | 1995-03-16 | ||
PCT/SE1996/000331 WO1996028218A1 (en) | 1995-03-16 | 1996-03-15 | A sprinkler head triggering apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0956102A1 EP0956102A1 (en) | 1999-11-17 |
EP0956102B1 true EP0956102B1 (en) | 2004-09-01 |
Family
ID=20397556
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96907836A Expired - Lifetime EP0956102B1 (en) | 1995-03-16 | 1996-03-15 | A sprinkler head triggering apparatus |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0956102B1 (en) |
AT (1) | ATE274977T1 (en) |
AU (1) | AU5129996A (en) |
DE (1) | DE69633305D1 (en) |
NO (1) | NO316765B1 (en) |
SE (1) | SE504325C2 (en) |
WO (1) | WO1996028218A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2778751C1 (en) * | 2021-11-24 | 2022-08-24 | Общество С Ограниченной Ответственностью "Фогстрим" | Sprinkler of fire extinguishing system |
WO2023096537A1 (en) * | 2021-11-24 | 2023-06-01 | Общество С Ограниченной Ответственностью "Фогстрим" | Sprinkler for a fire extinguishing system |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19618072A1 (en) * | 1996-05-06 | 1997-11-13 | Total Feuerschutz Gmbh | Fire extinguishing device for motor vehicles that are parked in multi-storey car parks |
DE19618092A1 (en) * | 1996-05-06 | 1997-11-13 | Total Feuerschutz Gmbh | Excitation element |
FI103480B (en) * | 1998-01-09 | 1999-07-15 | Marioff Corp Oy | Holder for mounting the spray head |
ITBS20070155A1 (en) * | 2007-10-11 | 2009-04-12 | Fiorentini Minireg S P A | SAFETY SOLENOID VALVE |
SE535545C2 (en) * | 2010-07-28 | 2012-09-18 | Ultra Fog Ab | Sprinkler head |
WO2017218538A1 (en) * | 2016-06-13 | 2017-12-21 | Tyco Fire Products Lp | Fire sprinkler with actuator |
CN110652679B (en) * | 2019-09-03 | 2021-02-02 | 国网浙江省电力有限公司嘉兴供电公司 | Circuit breaker fault processing system and method based on ubiquitous power Internet of things |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993021998A1 (en) * | 1992-04-23 | 1993-11-11 | Sundholm Goeran | Quick response sprinkler head |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3827002A1 (en) * | 1988-08-09 | 1990-02-15 | Willi Horcher | Device for initiating a sprinkler |
US4984637A (en) * | 1989-06-23 | 1991-01-15 | Finnigan Wilfred J | Electronic fire protection system |
-
1995
- 1995-03-16 SE SE9500920A patent/SE504325C2/en not_active IP Right Cessation
-
1996
- 1996-03-15 AU AU51299/96A patent/AU5129996A/en not_active Abandoned
- 1996-03-15 WO PCT/SE1996/000331 patent/WO1996028218A1/en active IP Right Grant
- 1996-03-15 DE DE69633305T patent/DE69633305D1/en not_active Expired - Lifetime
- 1996-03-15 EP EP96907836A patent/EP0956102B1/en not_active Expired - Lifetime
- 1996-03-15 AT AT96907836T patent/ATE274977T1/en not_active IP Right Cessation
-
1997
- 1997-09-12 NO NO19974215A patent/NO316765B1/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993021998A1 (en) * | 1992-04-23 | 1993-11-11 | Sundholm Goeran | Quick response sprinkler head |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2778751C1 (en) * | 2021-11-24 | 2022-08-24 | Общество С Ограниченной Ответственностью "Фогстрим" | Sprinkler of fire extinguishing system |
WO2023096537A1 (en) * | 2021-11-24 | 2023-06-01 | Общество С Ограниченной Ответственностью "Фогстрим" | Sprinkler for a fire extinguishing system |
Also Published As
Publication number | Publication date |
---|---|
SE9500920L (en) | 1996-09-17 |
NO974215L (en) | 1997-11-14 |
AU5129996A (en) | 1996-10-02 |
SE504325C2 (en) | 1997-01-13 |
EP0956102A1 (en) | 1999-11-17 |
WO1996028218A1 (en) | 1996-09-19 |
SE9500920D0 (en) | 1995-03-16 |
NO974215D0 (en) | 1997-09-12 |
ATE274977T1 (en) | 2004-09-15 |
DE69633305D1 (en) | 2004-10-07 |
NO316765B1 (en) | 2004-05-03 |
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