NO319353B1

NO319353B1 - Device for release and protection of rotating nozzle

Info

Publication number: NO319353B1
Application number: NO20034748A
Authority: NO
Inventors: Bjørn R Hansen
Original assignee: Hansen Bjoern R
Priority date: 2003-10-23
Filing date: 2003-10-23
Publication date: 2005-07-18
Also published as: NO20034748L; NO20034748D0

Description

Oppfinnelsen vedrører roterende dyser, særlig for slukking av branner. Nærmere bestemt angår oppfinnelsen roterende dyser montert i såkalte sprinkleranlegg. Nærmere bestemt angår oppfinnelsen en anordning for utløsning og beskyttelse av en roterende dyse for anvendelse i et takmontert sprinkleranlegg. The invention relates to rotating nozzles, in particular for extinguishing fires. More specifically, the invention relates to rotating nozzles mounted in so-called sprinkler systems. More specifically, the invention relates to a device for releasing and protecting a rotating nozzle for use in a roof-mounted sprinkler system.

Norsk patent nr. 314834 Bl meddelt 2. juni 2003 (tilhørende søkeren) omhandler en anordning for brannslukking, nærmere bestemt en roterende dyse av en såkalt vanntåke-type. I dette patentet beskrives vanntåkedysen for anvendelse i mobilt og til dels hånd-holdt brannslukningsutstyr. Norwegian patent no. 314834 Bl issued on 2 June 2003 (belonging to the applicant) deals with a device for extinguishing fires, more precisely a rotating nozzle of a so-called water mist type. This patent describes the water mist nozzle for use in mobile and partly hand-held fire extinguishing equipment.

Såkalte sprinkleranlegg for slukking av branner i lukkede rom er vel kjent. Slike sprinkleranlegg består vanligvis av et flertall takmonterte dyser som holdes lukket ved hjelp av en sikring (brytbart element). Når for eksempel temperaturen i rommet overstiger en gitt verdi brytes denne sikringen og vannet strømmer ut av sprinkleranleggets dyser. Ulempen med de kjente sprinkleranleggene er imidlertid at de ikke danner en slik vanntåke som oppnås ved hjelp av den roterende dyse som er omfattet av det ovennevnte norske patent. For å oppnå en mest mulig effektiv brannslukking, er det ønskelig å kun-ne benytte vanntåkedyser i sprinkleranlegg. So-called sprinkler systems for extinguishing fires in closed rooms are well known. Such sprinkler systems usually consist of a plurality of ceiling-mounted nozzles which are kept closed by means of a fuse (breakable element). When, for example, the temperature in the room exceeds a given value, this fuse is broken and the water flows out of the sprinkler system's nozzles. The disadvantage of the known sprinkler systems, however, is that they do not form such a water mist as is achieved with the aid of the rotating nozzle covered by the above-mentioned Norwegian patent. In order to achieve the most efficient firefighting possible, it is desirable to be able to use water mist nozzles in sprinkler systems.

Den kjente roterende dyse (vanntåkedyse) er imidlertid sårbar for tilstopping, idet dysemunningene er svært små og lett tettes av smuss, støv eller liknende. Spesielt i kre-vende omgivelser (industrihaller og lignende) kan dette være et problem. I mobile og håndholdte roterende dyser løses dette ved at selve dysen beskyttes i et eget hus når den ikke benyttes, og kun drives frem (eksponeres) av vanntrykket når dette settes på manu-elt. Slike løsninger er imidlertid lite egnet for bruk med fastmonterte sprinkleranlegg. However, the known rotating nozzle (water mist nozzle) is vulnerable to clogging, as the nozzle mouths are very small and are easily clogged by dirt, dust or the like. Especially in demanding environments (industrial halls and the like) this can be a problem. In mobile and hand-held rotating nozzles, this is solved by protecting the nozzle itself in a separate housing when it is not in use, and is only propelled (exposed) by the water pressure when this is switched on manually. However, such solutions are not suitable for use with fixed sprinkler systems.

NO 176748 beskriver en brannslukningsdyse med et dyselegeme som er roterbart anbrakt på en holder, hvor holderen innbefatter en tilførselskanal som kan settes i fluidforbindelse med dyselegemet via en kanal 5. NO 176748 describes a fire extinguishing nozzle with a nozzle body which is rotatably placed on a holder, where the holder includes a supply channel which can be placed in fluid connection with the nozzle body via a channel 5.

WO 93/21998 omtaler en brannslukningsinnretning med en eller flere dyselegemer montert i et hus. Dette innbefatter en første tilførselskanal der det er anbrakt et sperreelement som er bevegbart mellom to stillinger for å styre fluidforbindelsen. WO 93/21998 mentions a fire extinguishing device with one or more nozzle bodies mounted in a housing. This includes a first supply channel where a blocking element is placed which is movable between two positions to control the fluid connection.

JP 9140824 viser en brannslukningsdyse med en hette anbrakt rundt dysen. Hetten er innrettet til å løsne under trykk fra slukningsmiddelet. JP 9140824 shows a fire extinguishing nozzle with a cap fitted around the nozzle. The cap is designed to detach under pressure from the extinguishing agent.

US 1368055 viser en dyse roterbart anbrakt på en holder. Dysen har et sperreelement anbrakt i en tilførselskanal som holdes i en lukket stilling ved hjelp av et deformerbart låseelement. Når det deformerbare elementet deformeres på grunn av varmepåvirkning-en, drives sperreelementet til åpen posisjon ved hjelp av vanntrykket. US 1368055 shows a nozzle rotatably mounted on a holder. The nozzle has a locking element placed in a supply channel which is held in a closed position by means of a deformable locking element. When the deformable element is deformed due to the influence of heat, the locking element is driven to the open position by means of the water pressure.

Det er således frembrakt en anordning for beskyttelse av en på en holder roterbart anbrakt dyse tilordnet et hus som delvis omslutter dysen, hvilken holder innebefatter en tilførselskanal som kan settes i fluidforbindelse med dysen via minst en kanal, der dysen innbefatter minst en dysemunning ved dysens ytre periferi og videre innbefattende et brytbart element oppspent i en bøyle eller lignende for å regulere nevnte fluidforbindelse, kjennetegnet ved en kapsel frigjørbart festet til en del av nevnte hus for derved å danne et omsluttende kammer for dysen før nevnte fluidforbindelse etableres og som innbefatter en åpning som tillater det brytbare elementet å rage ut over kapselen når denne er i montert stilling, der kapselen når nevnte fluidforbindelse er etablert, på grunn av vanntrykket fra nevnte dysemunning løses fra huset, slik at dysemunningene frigjø-res. A device has thus been produced for the protection of a nozzle rotatably placed on a holder assigned to a housing which partially encloses the nozzle, which holder includes a supply channel which can be placed in fluid connection with the nozzle via at least one channel, where the nozzle includes at least one nozzle opening at the nozzle's exterior periphery and further including a breakable element suspended in a hoop or the like to regulate said fluid connection, characterized by a capsule releasably attached to a part of said housing to thereby form an enclosing chamber for the nozzle before said fluid connection is established and which includes an opening which allows the breakable element to protrude above the capsule when this is in the mounted position, where the capsule when said fluid connection is established, due to the water pressure from said nozzle mouth, is released from the housing, so that the nozzle mouths are released.

Oppfinnelsen skal illustreres nærmere under henvisning til de vedlagte figurene der: The invention shall be illustrated in more detail with reference to the attached figures where:

figur 1 er en perspektivtegning av anordningen ifølge oppfinnelsen, figure 1 is a perspective drawing of the device according to the invention,

figur 2 er en perspektivtegning av anordningen som vist i figur 1, men der hetten er løs-net fra dysehuset, figure 2 is a perspective drawing of the device as shown in figure 1, but where the cap is detached from the nozzle housing,

figur 3 er en delvis gjennomskåret tegning av anordningen vist i figurene 1 og 2, Figure 3 is a partially sectional drawing of the device shown in Figures 1 and 2,

Anordningen ifølge oppfinnelsen er delvis vist i en beredskapsstilling i figur 1. Et hus 26 og en hette 30 omslutter den roterbare dysen 200,300. For ytterligere detaljer vedrø-rende den roterbare dysen vises det til det ovenfor nevnte norske patent nr. 314834 Bl. Figur 1 viser også en øvre del av dyseholderen 400, som er gjenget i et øvre parti for innfesting i et konvensjonelt rørsystem for sprinkleranlegg. En sil 25 er også vist. Med henvisning nå også til figur 3 fremgår det at dysen er roterbart anbrakt på dyseholderen 400, det er påsatt et hus 26 som er festet mot et indre element og fastholdt ved hjelp av en mutter 20. Dysehuset 26 er utstyrt med en flens 28 i nedre omkrets. Figur 1 viser anordningen ifølge oppfinnelsen i en beredskapsstilling, dvs. med hetten 30 montert på huset 26, og med sikringen, eller det brytbare elementet 38, på plass som vist. Sikringen 38 spennes på kjent måte fast mot en stilleskrue 32 i en bøyle 34 og holder et sperreelement på en slik måte i tilførselskanalen at vannstrømmen er sperret. Figur 2 viser anordningen ifølge oppfinnelsen i en driftsstilling, dvs. at sikringen 38 er brutt (og fjernet), slik at sperreelementet 36 er drevet ned til stilleskruen for derved å tillate at vannet strømmer gjennom dysen og ut gjennom dysemunningene 203. Av hensyn til illustrasjonen er kun en dysemunning vist, men fagmannen vil forstå at dysen kan (og bør) utstyres med et flertall dysemunninger. Det vises for øvrig til foran nevnte norske patent. Figur 2 viser at vanntrykket har slynget hetten 30 bort fra sin innfestning mot huset 26.1 den stillingen som er skissert i figur 2 vil dysen 200, 300 rotere og pro-dusere den ovenfor beskrevne vanntåke. The device according to the invention is partially shown in a standby position in Figure 1. A housing 26 and a cap 30 enclose the rotatable nozzle 200,300. For further details regarding the rotatable nozzle, reference is made to the above-mentioned Norwegian patent no. 314834 Bl. Figure 1 also shows an upper part of the nozzle holder 400, which is threaded into an upper part for attachment in a conventional pipe system for sprinkler systems. A strainer 25 is also shown. With reference now also to figure 3, it appears that the nozzle is rotatably placed on the nozzle holder 400, a housing 26 is attached which is attached to an inner element and secured by means of a nut 20. The nozzle housing 26 is equipped with a flange 28 in the lower circumference. Figure 1 shows the device according to the invention in a standby position, i.e. with the cap 30 mounted on the housing 26, and with the fuse, or the breakable element 38, in place as shown. The fuse 38 is fastened in a known manner against a set screw 32 in a bracket 34 and holds a blocking element in such a way in the supply channel that the water flow is blocked. Figure 2 shows the device according to the invention in an operating position, i.e. that the fuse 38 has been broken (and removed), so that the blocking element 36 has been driven down to the set screw to thereby allow the water to flow through the nozzle and out through the nozzle mouths 203. For the sake of the illustration only one nozzle mouth is shown, but the person skilled in the art will understand that the nozzle can (and should) be equipped with a plurality of nozzle mouths. Reference is also made to the aforementioned Norwegian patent. Figure 2 shows that the water pressure has flung the cap 30 away from its attachment to the housing 26.1 the position outlined in Figure 2, the nozzle 200, 300 will rotate and produce the water mist described above.

Sperreelementet 36 er best vist i figur 3. Når sperreelementet er i den første stillingen, for å stenge for vannstrømmen, er et første anleggsområde 42 i tettende inngrep med tilførselskanalen 402, for derved å stenge for vannstrømmen. Når sikringen 38 fjernes (brytes) vil sperreelementet 36 beveges til en andre stilling, hovedsakelig ved hjelp av vanntrykket. I denne andre stillingen vil et andre anleggsområde 43 være i komplementært tettende inngrep med et tilsvarende område i nedre del av tilførselskanalen 402. Vann tillates dermed å strømme ned i tilførselskanalen 402 og tvinges ut gjennom den gjennomgående kanalen 39 i husets vegg. Igjen er det kun vist en gjennomgående kanal 39 av hensyn til illustrasjonen. Når vannet kommer igjennom kanalen 39 vil den passere gjennom dysen 200, 300 på en slik måte som er forklart i ovennevnte norske patent. Dysen 200, 300 settes i bevegelse, og trykket fra vannet som strømmer ut av dysemun-ningen 203 vil være tilstrekkelig til å tvinge hetten 30 bort fra huset 26, slik at dysemunningene 203 er frigjorte. The blocking element 36 is best shown in Figure 3. When the blocking element is in the first position, to block the water flow, a first installation area 42 is in sealing engagement with the supply channel 402, thereby blocking the water flow. When the fuse 38 is removed (broken), the blocking element 36 will be moved to a second position, mainly by means of the water pressure. In this second position, a second installation area 43 will be in complementary sealing engagement with a corresponding area in the lower part of the supply channel 402. Water is thus allowed to flow down into the supply channel 402 and is forced out through the continuous channel 39 in the house wall. Again, only a continuous channel 39 is shown for reasons of illustration. When the water comes through the channel 39, it will pass through the nozzle 200, 300 in such a way as is explained in the above-mentioned Norwegian patent. The nozzle 200, 300 is set in motion, and the pressure from the water flowing out of the nozzle mouth 203 will be sufficient to force the cap 30 away from the housing 26, so that the nozzle mouths 203 are freed.

Claims

I Device for the protection of a nozzle (200, 300) rotatably placed on a holder (400) assigned to a housing (26) which partially encloses the nozzle, which holder includes a supply channel (402) which can be placed in fluid connection with the nozzle via at least a channel (39), where the nozzle includes at least one nozzle opening (203) at the outer periphery of the nozzle and further including a breakable element (38) suspended in a hoop (34) or the like to regulate said fluid connection, characterized by a capsule (30) releasably attached to a part of said housing (26) to thereby form an enclosing chamber for the nozzle before said fluid connection is established and which includes an opening which allows the breakable element (38) to protrude above the capsule (30) when this is in assembled position, where the capsule, when said fluid connection is established, due to the water pressure from said nozzle opening is released from the housing, so that the nozzle openings are released.

2. Device according to claim 1, characterized in that the housing (26) includes a flange (28) around the circumference of the housing and at a level above said nozzle.

3. Device according to claim 1, characterized in that the capsule (30) is formed from a springy material.

4. Device according to claim 1, characterized in that the capsule (30) can be attached to the housing (26) via one or more releasable snap locks and/or hooks.

5. Device according to claim 1, characterized by a blocking element (36) placed in part of the supply channel (402), which blocking element has a first end surface facing said water or the like to function as a plug for this, where the blocking element is movable from a first position where said fluid connection is broken, to a second position where said fluid connection is established, the blocking element (36) being driven to the second position by means of a gravitational force or a force caused by the water pressure in the supply channel (402) or a combination of such forces.

6. Device according to claim 5, characterized in that the blocking element (36) is held in the first position via a breakable element (38).

7. Device according to claims 5 and 6, characterized in that the breakable element is supported in a manner known per se via means (32, 34) outside said holder (400).

8. Device according to claim 5, characterized in that the blocking element (36) includes a first contact area (42) for sealing engagement with a complementary part of the supply channel (402), so that this is closed by the blocking element when this is in the first position.

9. Device according to claim 5, characterized in that the locking element (36) includes a second contact area (43) for sealing engagement with a complementary part of a part of the holder when the locking element is in the second position.