EP0717648A1 - Spray head for sprinkler systems - Google Patents
Spray head for sprinkler systemsInfo
- Publication number
- EP0717648A1 EP0717648A1 EP95920028A EP95920028A EP0717648A1 EP 0717648 A1 EP0717648 A1 EP 0717648A1 EP 95920028 A EP95920028 A EP 95920028A EP 95920028 A EP95920028 A EP 95920028A EP 0717648 A1 EP0717648 A1 EP 0717648A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- extinguishing agent
- spray head
- indicator
- head according
- control 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment
Definitions
- the invention relates to a spray head • for sprinkler systems.
- a pipe socket which can be connected to a pipe network for extinguishing agents and a closure element which faces the space to be protected and which closes an extinguishing agent outlet opening in the pipe socket and opens by the action of heat.
- sprinkler systems For the fire protection of rooms in passenger ships, department stores, public buildings and industrial plants, sprinkler systems are prescribed which, in the event of a fire, automatically spray water or another extinguishing agent into the room to be protected and contain a fire in the room or, if possible, extinguish it.
- the sprinkler systems consist of a line network, which is usually installed in the ceiling of the room, into the pipes of which spray heads are screwed, which protrude into the room to be protected and are closed by closure elements which open as soon as the temperature in the room to be protected reaches a predetermined one Maximum value, usually 68 "C, exceeds.
- the object of the invention is to design a spray head for sprinkler systems of the type explained in more detail above so that it can be checked at any time from the space to be protected whether the spray head in question is acted upon by extinguishing agent and is ready for operation.
- the monitoring device for each spray head must be very simple and inexpensive to manufacture and also functionally reliable over many years.
- extinguishing agent indicator which is supplied with extinguishing agent from the inside of the pipe socket and is perceptible or accessible from the space to be protected.
- Such an extinguishing agent indicator shows at any time whether the spray head equipped with it is ready for operation without the spray head having to be removed or partially destroyed from the pipe network.
- the extinguishing agent indicator can be connected to the closure element.
- the inside of the pipe socket is connected to the extinguishing agent indicator by a control channel, so that the extinguishing agent can act directly on the extinguishing agent indicator.
- the control channel expediently has a bore which is located in the base of a holder for the closure element and in which the extinguishing agent indicator is arranged. This means that the extinguishing telindicator protected and can not be damaged even during transportation and assembly of the spray head.
- the extinguishing agent indicator can be a dye, for example litmus, or phenolphthalein, which changes its color or its color intensity when it comes into contact with the extinguishing agent. If the control channel at the end facing the space to be protected is closed by a sight glass, the color change of the extinguishing agent indicator can easily be noticed from the outside through this sheet glass and it can be determined whether the spray head is supplied with extinguishing agent and is ready for operation.
- the sight glass can be provided with the extinguishing agent indicator on its inner side facing the control channel, for example it can be vapor-coated or coated.
- the extinguishing agent indicator is inextricably linked to the spray head and has been functional for decades.
- the extinguishing agent indicator can also have a pressure display device, so that it can be determined at any time whether the spray head is under the pressure of the extinguishing agent.
- the pressure display device can be a spring-loaded indicator pin, which is arranged in the control channel and is partially pushed out into the space to be protected by an extinguishing agent under pressure. From the area to be protected, the indicator pins above show exactly which of the individual spray heads of a sprinkler system arranged in a room are ready for operation and which are not.
- a manometer is used, which can be connected to the control channel in the spray head secured by a check valve.
- the spray head itself can also be equipped with a manometer which is built into the control channel in such a way that its display can be seen from the room to be monitored.
- the extinguishing agent indicator of each spray head with an electrical pressure sensor which has connections for external measuring and monitoring devices on the outside of the spray head facing the space to be monitored.
- these monitoring devices can also be used to determine the sequence in which the spray heads of a sprinkler system respond. If this sequence is recorded, it can be followed after the fire has been extinguished how the fire has developed. From this, valuable conclusions can be drawn retrospectively about the cause of the fire and the risk of fire in certain rooms and room arrangements.
- FIG. 2 shows a second embodiment of the spray head according to the invention in a representation corresponding to FIG. 1,
- FIG. 3 shows a third embodiment of the spray head according to the invention in the normal state
- FIG. 4 shows the object of FIG. 3 with a manometer attached from the outside in a side view
- FIG. 5 shows a fourth embodiment of the invention with a built-in manometer
- Fig. 6a u. 6b is a partial view of the manometer display of the
- FIG. 7 shows a fifth embodiment of the spray head according to the invention with a built-in electrical pressure sensor in a side view.
- 10 denotes a spray head which is screwed into a pipeline (not shown in more detail) of a sprinkler system, which is usually arranged in the ceiling of a room to be protected from fire and contains a large number of spray heads.
- the spray head 10 consists of a pipe socket 11 with an external thread 12 and a holder 13 for a closure element 14.
- the pipe socket 11 can be screwed into a suitable threaded connection of the pipeline of the sprinkler system and is with a base plate 15 of the holder 13 firmly connected.
- the base plate 15 of the holder 13 has a central opening 17 which is flush with the interior 16 of the pipe socket and into which the socket 18 of the closure element 14 is inserted.
- the base plate 15 On its underside 20 facing the space 19 to be protected, the base plate 15 carries a closed bracket 21, on the lower apex 22 of which a spray plate 23 is fastened.
- the spray plate 23 is circular in the bottom view, seen in the direction of the arrow 24, and carries on its outer circumference a plurality of lamellae which extend at a distance from one another in the radial direction.
- the closure element 14 is a closed glass tube, which sits with its upper end in the holder 18 and is supported with its lower end on the apex 22 of the bracket 21.
- the glass tube of the closure element 14 is filled with a liquid which expands strongly when exposed to heat and bursts when the
- SPARE BLADE (RULE 26) Temperature in the space 19 to be protected exceeds a predetermined value, for example 68 ° C.
- a pressurized extinguishing agent for example extinguishing water, which via the pipeline of the sprinkler system, not shown, into the interior 16 of the pipe socket 11 and into the opening 17 in the base plate
- Spray heads of the type described above are generally known and are used in large numbers in sprinkler systems.
- a control channel 29 is arranged in the base 15 of the holder 13, which extends radially outward from the opening 17 in the base plate 15 and widens in the vicinity of the outer peripheral surface 28 of the base plate 15 to form an indicator chamber 26 .
- this indicator chamber 26 is formed by a blind bore with an internal thread 27, which extends radially inwards from the outer circumferential surface 28 and through the control channel 29 and the opening 17 in the base plate 15 with the interior 16 of the Pipe socket 11 is connected.
- a sight glass 30 is screwed into the internal thread 27 of the indicator chamber 26, the hemispherical surface of which is transparent and protrudes beyond the outer peripheral surface 28 of the base plate 15. Through this sight glass 30, the extinguishing agent indicator 25 inside the indicator chamber can be viewed from the space 19 to be protected.
- the extinguishing agent indicator is a suitable dye, for example litmus or phenolphthalein, which changes its color or its color intensity when it comes into contact with the extinguishing agent.
- This dye can, for example, be applied to paper strips which are accommodated in the indicator chamber 26.
- the sight glass 30 on its inside 31 facing the control channel 29 with the extinguishing agent indicator 25, for example to coat or vapor-coat it with the indicator. It can then be seen from the color of the sight glass 30 from the outside whether the extinguishing agent is acting on it or not, ie whether or not there is extinguishing agent in the interior 16 of the pipe socket 11.
- FIGS. 2 to 7 have essentially the same structure as the spray head according to FIG. 1, they differ from this only in the design of the extinguishing agent indicator 25. In the following, therefore, only these differently designed extinguishing agent indicators 25 will be described .
- the extinguishing agent indicator 25 does not have a dye, but a pressure display device 32, so that the extinguishing agent pressure prevailing in the interior 16 of the pipe socket 11 can be seen from the space 19 to be monitored
- a * compression spring 39 is supported on the inside of this screw cap 38, which surrounds the indicator pin 35 and presses with its other end against the end face 34 of the piston 33 and pushes it in its most inserted position on the Base area of the indicator chamber 26
- SPARE BLADE (RULE 26) holds adjacent position, in which the outer end 36 of mt connected to it indicator pin 35 with the outer peripheral surface 28 of the base plate 15 -closes.
- the indicator chamber 26 has on its outer edge 42 a valve seat 43 for the ball of a check valve 44, the valve spring 45 of which is at one end on the ball of the check valve 44 and at the other end on the base 46 of the indicator chamber 26 supports.
- An extinguishing agent present in the interior 16 of the pipe socket 11 and in the opening 17 of the base plate 15 passes through the control channel 29 into the indicator chamber.
- a hand pressure gauge 47 is attached to the outer edge 42 of the indicator chamber 26, as is indicated in FIG. 4.
- the sensing arm 48, designed as a tube, of the hand pressure gauge 47 then presses the ball of the check valve 44 back against the action of the valve spring 45 and at the same time closes the indicator chamber 26 on its outer edge 42, so that the extinguishing agent pressure can act on the pressure gauge 47 through the sensing arm 48 and 49 is displayed on its scale.
- a small manometer 50 is screwed into the indicator chamber 26, which serves as a pressure display device and outside the base plate 15
- SPARE BLADE (RULE 26) in a scale housing 51 has a pressure-actuated, colored disk 52, which is visible in a cutout 53 of a front cover 54 when it is rotated by the pressure of the extinguishing agent inside the control channel 29.
- this spray head 10 too, it can be recognized from the space 19 to be protected whether the spray head 10 is ready for operation or not.
- the extinguishing agent indicator 25 has an electrical pressure sensor 55, which is installed in the indicator chamber 26 and is acted upon by the control channel 29.
- This electrical pressure sensor 55 is provided on its outer side 56 facing the space 19 to be monitored with connections 57 and 58 for measuring and monitoring devices (not shown).
- the system pressure can be read during commissioning using a special measuring device which is applied to the pressure sensor 55.
- the electrical pressure sensors can connect a plurality of spray heads by means of an electrical series connection and can be connected to a fault reporting center. With a suitable design of this fault reporting center, it can be determined and recorded in which order the spray heads of the sprinkler system respond. This makes it possible to subsequently follow the development of a fire that has taken place in the monitored room.
- extinguishing agent indicators can also be used to monitor the presence of gaseous extinguishing agents and it is also possible to use indicators other than dyes and pressure indicators.
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)
- Spray Control Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4416746 | 1994-05-12 | ||
DE4416746A DE4416746A1 (en) | 1994-05-12 | 1994-05-12 | Spray head for sprinkler systems |
PCT/EP1995/001797 WO1995031255A1 (en) | 1994-05-12 | 1995-05-12 | Spray head for sprinkler systems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0717648A1 true EP0717648A1 (en) | 1996-06-26 |
EP0717648B1 EP0717648B1 (en) | 2000-03-29 |
Family
ID=6517947
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95920028A Expired - Lifetime EP0717648B1 (en) | 1994-05-12 | 1995-05-12 | Spray head for sprinkler systems |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0717648B1 (en) |
AT (1) | ATE191151T1 (en) |
DE (2) | DE4416746A1 (en) |
WO (1) | WO1995031255A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016196104A1 (en) * | 2015-06-04 | 2016-12-08 | Utc Fire & Security Corporation | Externally mounted device for the supervision of a fire suppression system |
WO2016200608A1 (en) * | 2015-06-08 | 2016-12-15 | Utc Fire & Security Corporation | Internally mounted device for the supervision of a fire suppression system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011050661U1 (en) | 2011-07-07 | 2011-09-09 | Job Lizenz Gmbh & Co. Kg | Thermal release element for sprinklers, valves or the like |
GB201413159D0 (en) * | 2014-07-24 | 2014-09-10 | Mcgavigan Daniel | Sprinkler Device |
RU2719099C1 (en) * | 2019-08-28 | 2020-04-17 | Общество с ограниченной ответственностью "НПО ФАРРО" | Sprinkler irrigator and modular fire extinguishing installation using such sprinkler |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1875233A (en) * | 1931-06-06 | 1932-08-30 | Wilfred J Thuermann | Testing device for sprinkler systems |
DE867952C (en) * | 1944-01-29 | 1953-02-23 | Concordia Elek Zitaets Ag | Liquid level and pressure indicators, especially for fire extinguishers |
DE1028886B (en) * | 1952-04-22 | 1958-04-24 | Minimax Ag | Device for monitoring the tightness of carbon dioxide bottles, especially for fire extinguishing purposes, and switching for an alarm device to be operated by this device |
US2917924A (en) * | 1957-05-02 | 1959-12-22 | Standard Alarm And Signal Comp | Light permeable fluid level marker for casings |
DE1708107A1 (en) * | 1967-03-11 | 1970-04-02 | Diebold Vulkan Werk W | Pressure indicator |
DE3821774A1 (en) * | 1988-06-28 | 1990-01-11 | Siemens Ag | Device for monitoring the condition of fire extinguisher bottles |
US5373989A (en) * | 1992-11-11 | 1994-12-20 | Hattori; Takamasa | Sprinkler head having a checking means for checking that fluid has been filled inside of a sprinkler head body and method for checking that the fluid has been filled using such sprinkler head |
-
1994
- 1994-05-12 DE DE4416746A patent/DE4416746A1/en not_active Withdrawn
-
1995
- 1995-05-12 WO PCT/EP1995/001797 patent/WO1995031255A1/en active IP Right Grant
- 1995-05-12 DE DE59508093T patent/DE59508093D1/en not_active Expired - Fee Related
- 1995-05-12 EP EP95920028A patent/EP0717648B1/en not_active Expired - Lifetime
- 1995-05-12 AT AT95920028T patent/ATE191151T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
BOSIER M.H.: "Disk Release Mechanism for Magnetic Disk Cartridge", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 22, no. 6, November 1979 (1979-11-01), pages 2499 - 2500, XP000889582 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016196104A1 (en) * | 2015-06-04 | 2016-12-08 | Utc Fire & Security Corporation | Externally mounted device for the supervision of a fire suppression system |
EP3449980A1 (en) * | 2015-06-04 | 2019-03-06 | UTC Fire & Security Corporation | Externally mounted device for the supervision of a fire suppression system |
US10525296B2 (en) | 2015-06-04 | 2020-01-07 | Utc Fire & Security Corporation | Externally mounted device for the supervision of a fire suppression system |
WO2016200608A1 (en) * | 2015-06-08 | 2016-12-15 | Utc Fire & Security Corporation | Internally mounted device for the supervision of a fire suppression system |
EP3984603A1 (en) * | 2015-06-08 | 2022-04-20 | UTC Fire & Security Corporation | Internally mounted device for the supervision of a fire suppression system |
US11872430B2 (en) | 2015-06-08 | 2024-01-16 | Utc Fire & Security Corporation | Internally mounted device for the supervision of a fire suppression system |
Also Published As
Publication number | Publication date |
---|---|
DE59508093D1 (en) | 2000-05-04 |
WO1995031255A1 (en) | 1995-11-23 |
DE4416746A1 (en) | 1995-11-16 |
EP0717648B1 (en) | 2000-03-29 |
ATE191151T1 (en) | 2000-04-15 |
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