EP4673233A1 - Sprinklerkopf mit einstückigem verschlusskörper - Google Patents
Sprinklerkopf mit einstückigem verschlusskörperInfo
- Publication number
- EP4673233A1 EP4673233A1 EP24704398.7A EP24704398A EP4673233A1 EP 4673233 A1 EP4673233 A1 EP 4673233A1 EP 24704398 A EP24704398 A EP 24704398A EP 4673233 A1 EP4673233 A1 EP 4673233A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- closure body
- sprinkler
- closure
- sprinkler head
- outlet opening
- 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.)
- Pending
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C35/00—Permanently-installed equipment
- A62C35/58—Pipe-line systems
- A62C35/68—Details, e.g. of pipes or valve systems
-
- 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
- A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels
Definitions
- the invention relates to a sprinkler head with a closure element for sealingly closing an outlet opening of a line section of the sprinkler head, as well as to such a closure element itself. It further relates to the use of such a closure element in a sprinkler head and also to a sprinkler system having a sprinkler head as described.
- Sprinkler systems have been used for many decades for fire protection and firefighting in buildings.
- Such sprinkler systems typically comprise a storage tank with sprinkler fluid under a certain pressure and a line or pipe system connected to the storage tank, which has distribution lines or distribution pipes that end in ceiling areas of rooms to be protected and in which sprinkler heads are inserted.
- Such sprinkler heads have valves - which are normally closed - which open when triggered and allow the sprinkler fluid to escape. These valves are often formed by a closure element that seals an outlet opening, which is held in the closed position by a trigger element and is released from this position when the trigger element is triggered.
- the sprinkler heads also typically have impact and distribution plates that allow sprinkler fluid escaping under pressure to bounce off and distribute it in order to wet a large area with the sprinkler fluid.
- the valves of the sprinkler heads are typically kept closed by trigger elements, preferably thermal trigger elements, which are arranged between an abutment section designed to support them and a closure element of the valve and thus normally keep the valve and thus the outlet of the sprinkler liquid closed.
- the thermal trigger elements heat up to a trigger temperature, whereby they are triggered and the closure elements are released, opening the respective valve and thus the outlet of the sprinkler liquid.
- Typical thermal trigger elements can in particular comprise support bodies made of a fusible link or glass ampoules, also called glass barrels, which are filled with a trigger liquid, usually also with a gas bubble. The latter are triggered by the thermal trigger liquid building up pressure inside the glass vessel due to its expansion when heated, which ultimately causes the wall of the glass vessel to burst and destroy the glass ampoule.
- a spring is usually provided on the closure element as an additional component, which controls the force.
- a spring - usually a disk spring - enables the glass ampoule to be inserted between the abutment element and the closure element.
- the spring also allows dimensional variations in the abutment, closure element and/or trigger element that occur, for example, due to temperature fluctuations to be compensated for.
- the use of such a spring designed as a separate element means that this or its interaction with the closure element can be a potential weak point for sealing the outlet opening of the sprinkler head.
- Such springs are also made of a metal, e.g. spring steel, and their material is usually subject to the risk of corrosion or the like, or their spring effect can deteriorate over the period of use of the spring, in particular even be completely lost.
- the movements of the valve element in the sprinkler head caused by temperature fluctuations in the environment, for example due to different ambient temperatures in summer and winter, and the different expansion of the materials of the components involved can lead to wear at the joints between the spring and closure element, which worsens the tightness of the closure.
- the spring and the closure body are usually made of different materials, they are usually subject to different degrees of expansion, which can intensify the above-mentioned wear and tear effect. Since sprinkler heads typically remain installed in sprinkler systems for several years, often even decades, even minor wear and tear over time can lead to a possible leakage problem.
- a sprinkler head with the features of claim 1, a closure body consisting of an elastic, in particular spring-elastic, material and formed in one piece with the features of claim 9, a use of such a closure body according to the invention in a sprinkler head according to claim 14 and a sprinkler system with a sprinkler head according to the invention according to claim 15, in particular one with a closure element according to the invention.
- Advantageous further developments of a sprinkler head according to the invention are specified in the dependent claims 2 to 8, and those of a closure body according to the invention in the dependent claims 10 to 13.
- a sprinkler head for a sprinkler system initially has a line section for a sprinkler liquid, this line section being designed at a first end for connection to a connection of a sprinkler line of a sprinkler system, e.g. with a screw thread.
- the line section also has an outlet opening at a second end.
- the sprinkler head has a closure element for sealingly closing the outlet opening of the line section. It also has an abutment section connected to the line section and a trigger element arranged between the abutment section and the closure element.
- the trigger element is designed to hold the closure element in the outlet opening of the line section in a normal state such that the closure element seals the outlet opening of the line section, i.e. seals against the escape of sprinkler liquid, and in a trigger state to release the closure element from its position closing the outlet opening of the line section and thus enable the escape of sprinkler liquid.
- the closure element is a closure body made of an elastic, in particular spring-elastic, material, which is formed in one piece.
- This elasticity of the closure element means that the closure element can ensure a sufficient spring effect, in particular with regard to forces acting on the trigger element, so that a spring - as used as standard in the prior art - can be completely dispensed with as an additional component and nevertheless the The trigger element can be inserted into the sprinkler head and/or held in the sprinkler head without damaging it through excessive force.
- the closure element can consist not only of a single material, but also of a combination of materials while retaining the one-piece design of the closure element.
- the closure element can have different areas with regard to their elasticity. It can be particularly advantageous to provide an inelastic or only slightly elastic area centrally in the closure element, while wheels and/or outer areas of the closure element have a higher elasticity.
- Such a structure can in particular ensure that the closure element retains its original shape and/or is not deformed by the application of force in such a way that, for example, the trigger element can no longer be held and/or the sealing function can no longer be guaranteed and at the same time the edges and/or outer areas are so flexible that a sufficient sealing and/or spring effect can be achieved.
- the one-piece closure body can be a separate component that is not firmly connected to any other component, in particular not to the trigger element.
- the closure body is not part of a coating of the trigger element and/or is not a cap firmly connected to the trigger element, in particular not one designed as a coating.
- the closure body can advantageously be designed to withstand, in the normal state of the trigger element, a liquid pressure exerted on the closure body by the sprinkler liquid in the line section while maintaining the sealing closure of the outlet opening and, in the trigger state, to be moved out of the outlet opening by the liquid pressure in such a way that the outlet opening is cleared for the sprinkler liquid to escape.
- the closure body in the normal state advantageously withstand a fluid pressure of at least 35 bar or 500 psi.
- the sprinkler head according to the invention can have a nominal K-factor (outflow factor of the sprinkler) of at least 20 [L/min/(bar) 1 2 ], in particular at least 57 [L/min/(bar) 1 2 ], in particular at least 80 [L/min/(bar) 1 2 ], in particular at least 1 15 [L/min/(bar) 1 2 ], in particular at least 1 60 [L/min/(bar) 1 2 ], in particular at least 360 [L/min/(bar) 1/2 ], and/or up to 400 [L/min/(bar) 1/2 ], so that a sufficiently high flow of sprinkler fluid through the sprinkler head can be ensured.
- the sprinkler head or its design can be adapted with regard to the dimensioning of individual components, in particular the pipe section and the outlet opening, in such a way that a required K-factor can be guaranteed.
- a glass ampoule can advantageously be used as a trigger element.
- the glass ampoule is filled with a gas and/or a liquid.
- the glass ampoule can advantageously be designed in particular to be able to burst by heating.
- the bursting can be caused in particular by expansion of the gas and/or the liquid and/or by evaporation of the liquid in the glass ampoule.
- Such a glass ampoule as a trigger element can in particular be triggered and caused to burst if, due to a fire, ambient air around the sprinkler head or around the trigger element is heated in such a way that the temperature rises above a trigger temperature of the thermal trigger element.
- the closure body can advantageously seal the outlet opening in the normal state of the trigger element without interacting with another element in addition to the trigger element.
- potential weak points can be avoided by using additional components.
- the closure body and/or trigger element, in particular the glass ampoule can be held in the normal state by a pre-tensioning force of between 200 N and 1000 N, in particular between 200 N and 800 N. This ensures in particular that, on the one hand, the aforementioned components are not damaged by excessive force and/or are not deformed unintentionally or too strongly. For example, excessive deformation of the closure body could lead to a loss of tightness. On the other hand, the far greater risk of unintentional damage to the trigger element, in particular the glass ampoule, due to excessive tensioning is prevented.
- this can result in either a loss of the triggering effect per se, for example due to the filled gas or the filled liquid escaping from the glass ampoule, or an unintentional bursting of the trigger element, in particular the glass ampoule.
- the latter then inevitably leads to an unwanted transition from the normal state to the triggered state and ultimately to an unwanted leakage of sprinkler fluid through the defective sprinkler head. In both cases, there is a risk of the sprinkler head completely losing its functionality.
- the closure body can particularly advantageously be made of a plastic, in particular a polymer, preferably a polyamide, in particular a partially aromatic polyamide.
- the plastic can in particular be fiber-reinforced, in particular with up to 70% fibers, in particular glass fibers.
- a closure body made of a plastic can in particular be manufactured cost-effectively in large quantities using an injection molding process.
- the sprinkler head according to the invention can advantageously have a baffle and distributor plate for distributing the sprinkler liquid, as is basically known in sprinkler heads from the prior art.
- a baffle and distributor plate and distribution plate serves in particular to distribute the sprinkler liquid, which initially flows in from the front, over a correspondingly large area in order to be able to wet a large area with the sprinkler liquid, to provide preventive protection against fire or to be able to fight a fire that has occurred there with the sprinkler liquid.
- a closure body for a sprinkler head in particular for a sprinkler head according to the invention, which closure body consists of an elastic, in particular spring-elastic, material and is formed in one piece.
- the closure body can be particularly advantageously formed in a plate shape.
- the plate shape can in particular have an outer, essentially flat edge section and a central protuberance for receiving a section of a trigger element.
- the edge section can advantageously run at an angle to a main extension plane of the closure body, which can result in an improved sealing effect when the trigger element is inserted.
- the central protuberance can in particular serve to center the trigger element or simplify and/or bring about such a centering.
- the central protuberance can advantageously be shaped like a head of the trigger element, accommodate it and advantageously enclose it in order to provide the trigger element with additional stability, in particular with regard to movements of the trigger element parallel to the flat extension of the closure body.
- the latter can consist of a plastic, in particular a polymer, preferably a polyamide, in particular a partially aromatic polyamide. It can then be produced in particular by injection molding.
- the closure body can advantageously have a tensile modulus according to ISO 527-1 / -2 between 20,000 and 40,000 MPa, in particular between 25,000 and 40,000 MPa, in particular between 25,000 and 30,000 MPa and/or a breaking stress according to ISO 527-11-2 between 200 and 400 MPa, in particular between 250 and 400 MPa, in particular between 250 and 300 MPa and/or a breaking elongation according to ISO 527-11-2 between 0.5 and 2.5%, in particular between 1 and 2% and/or Charpy impact strength according to ISO 179/1 eU between 20 and 100 kJ/m 2 , in particular between 40 and 80 kJ/m 2 , in particular between 50 and 70 kJ/m 2 and/or Charpy notched impact strength according to ISO 179/1 eA between 5 and 30 kJ/m 2 , in particular between 10 and 20 kJ/m 2 .
- a tensile modulus according to ISO 527-1 / -2 between 20,000 and 40,000 MPa, in
- a closure body with such a parameter(s) or with such parameters can be achieved in particular by means of the design in the form of a closure body consisting of a, in particular fiber-reinforced, plastic, in particular a polymer, in particular advantageously by using a, in particular partially aromatic, in particular fiber-reinforced, polyamide as the material for the closure body.
- a closure body according to the invention in a sprinkler head, in particular in a sprinkler head according to the invention.
- Fig. 1 shows a sprinkler head according to the invention in an exploded view with an exploded closure body and trigger element
- Fig. 2 is a sectional view of the sprinkler head according to Figure 1 with clamped closure body and trigger element.
- FIG. 1 shows a sprinkler head 1.
- the sprinkler head 1 has a sprinkler body 2. This consists of a base body 3, an abutment element 4 and a connection 5 between the base body 3 and the abutment element 4.
- the base body 3 has a line section 6, at the end of which, shown in the figure above, there is an outlet opening 7.
- the line section 6 with the inlet opening 8 and the outlet opening 7 thus forms a fluid channel 6, 7, 8 for conducting sprinkler liquid through the sprinkler head 1.
- a thread 9 is provided on the outside of the base body 3, which enables the sprinkler head 1 to be inserted and secured by screwing it to a supply line for sprinkler liquid.
- Figure 1 shows a closure body 10.
- the closure body 10 is formed in one piece and has a substantially flat geometry. It serves to seal the outlet opening 7 of the line section 6.
- a support 11 is provided in the area of the outlet opening 7, onto which the closure body 10 can be placed.
- the support 11 forms in this respect, it also forms a valve seat. It also helps to bring the closure body 10 correctly into the position required to seal the outlet opening 7 of the line section 6.
- the closure body 10 In order for the closure body 10 to remain sealed in the outlet opening 7 of the line section 6 after the line section 6 has been subjected to sprinkler fluid or despite the resulting water pressure, the closure body 10 must be braced.
- the trigger element 12 in this case is a glass ampoule filled with a gas and/or a liquid. This is designed to burst when a trigger temperature is reached due to the increased internal pressure caused by the heated gas and/or the heated liquid inside the glass ampoule, thus releasing the tension of the closure body 10 in the outlet opening 7 of the line section 6. As a result, the closure element 10 can no longer withstand the water pressure of the sprinkler liquid, so that it is driven out of the outlet opening 7 of the line section 6 by the sprinkler liquid.
- the closure body 10 is plate-shaped and has a central protuberance 13 for receiving a tip 14 of the trigger element 12. Furthermore, this arrangement of the tip 14 in the central protuberance 13 can cause a stabilization of the trigger element 12 with respect to lateral movement from a clamped position.
- Figure 2 shows the sprinkler head 1 according to Figure 1 with the closure body 10 and trigger element 12 braced together.
- the closure body 10 rests on the support 1 1.
- the tip 14 of the trigger element 1 2 engages in the central protuberance 13 of the closure body 10.
- the ampoule end 1 5 of the trigger element 12 rests against the abutment element 4.
- the closure body 10 consists of an elastic, in particular spring-elastic, material, preferably of a plastic, in particular of a polyamide, in particular a partially aromatic polyamide.
- closure body 10 formed in one piece according to the invention takes over in one element the parts of the closure body and the spring element which together form a closure arrangement (or closure element) in sprinkler heads known from the prior art.
- the closure body 10 accommodates a section of the trigger element 12, seals the outlet opening 7 and provides the spring effect which is caused by the separate spring in sprinkler heads according to the prior art.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202023100969.7U DE202023100969U1 (de) | 2023-03-01 | 2023-03-01 | Sprinklerkopf mit einstückigem Verschlusskörper |
| PCT/EP2024/053217 WO2024179801A1 (de) | 2023-03-01 | 2024-02-08 | Sprinklerkopf mit einstückigem verschlusskörper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4673233A1 true EP4673233A1 (de) | 2026-01-07 |
Family
ID=89901009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP24704398.7A Pending EP4673233A1 (de) | 2023-03-01 | 2024-02-08 | Sprinklerkopf mit einstückigem verschlusskörper |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4673233A1 (de) |
| CN (1) | CN120936412A (de) |
| DE (1) | DE202023100969U1 (de) |
| WO (1) | WO2024179801A1 (de) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2639245C2 (de) * | 1976-09-01 | 1982-04-08 | Eduard J. Ing.(grad.) 2070 Ahrensberg Job | Feuerlöschbrausekopf für selbsttätige Feuerlöschanlagen |
| DE3808384C2 (de) * | 1987-07-06 | 1990-03-22 | Total Feuerschutz Gmbh | Ausl¦seglied zur thermischen und/oder elektrischen Ausl¦sung einer Brandschutzanlage |
| DE202010013607U1 (de) * | 2010-09-27 | 2011-12-28 | Job Lizenz Gmbh & Co. Kg | Thermisches Auslöseelement für ein thermisch gesteuertes Schaltelement |
| KR101914958B1 (ko) * | 2017-02-28 | 2018-11-08 | 주식회사 파라텍 | 스프링클러 헤드 |
| DE202017101700U1 (de) * | 2017-03-23 | 2018-06-27 | Job Lizenz Gmbh & Co. Kg | Schließelement für eine thermische Auslöseeinrichtung |
-
2023
- 2023-03-01 DE DE202023100969.7U patent/DE202023100969U1/de active Active
-
2024
- 2024-02-08 EP EP24704398.7A patent/EP4673233A1/de active Pending
- 2024-02-08 CN CN202480014744.0A patent/CN120936412A/zh active Pending
- 2024-02-08 WO PCT/EP2024/053217 patent/WO2024179801A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN120936412A (zh) | 2025-11-11 |
| WO2024179801A1 (de) | 2024-09-06 |
| DE202023100969U1 (de) | 2024-06-04 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250815 |
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| AK | Designated contracting states |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MUELLER, BODO Inventor name: TESCHNER, JUERGEN |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: MUELLER, BODO Inventor name: TESCHNER, JUERGEN Inventor name: KLUG, RUEDIGER Inventor name: HANSEN, VOLKER ANDREAS Inventor name: KAMP, HANNO |