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A sprinkler and cover technology, applied in fire rescue and other directions, can solve problems such as explosion and fire
Inactive Publication Date: 2001-12-19
MARIOFF CORP OY
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Problems solved by technology
[0009] Risk of explosion and fire in certain environments
Method used
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[0026] figure 1 The sprinkler of the present invention is shown in a first, non-operating mode. The sprinkler comprises a nozzle holder 1 and a glass needle tube 18 mounted on the nozzle holder by means of a support 19 . A nozzle base 1 comprising a plurality of nozzles 2 is mounted on a support body 3 with screw connections, and the support body 3 is then mounted on a pipeline 4, which supplies fire extinguishing agent to an inlet 5 in the support body 3, And further supply to the upper zone 22 of the nozzle seat.
[0027] The support body 3 is enclosed in a cylindrical jacket 6 . The jacket 6 is movable relative to the support body 3 . A pressure chamber 7 is arranged between the jacket 6 and the support body 3 . Since the jacket 6 has a second inner cylindrical surface 8 whose diameter is larger than the first inner cylindrical surface 9 of the jacket, the pressure chamber 7 is formed. The channel between the cylindrical surfaces 8 and 9 defines a shoulder 10 . The pr...
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Abstract
The invention relates to a sprinkler comprising a holder body (3), at least one nozzle (2), a heat-activated release means (18) and a cover (13) which in a protective position is arranged in front of said nozzle when the sprinkler is in an inactive mode, the sprinkler comprising means (6, 10) for providing a displacement of the cover from the protective position to a free position in which the cover keeps clear of the nozzle so that it can spray extinguishing medium when the sprinkler is in an active mode, the holder body comprising an inlet (5) for incoming extinguishing medium. In order for the sprinkler to be usable in surroundings where it may be heavily exposed to dirt and impurities and in order for it not to start spraying extinguishing medium when being exposed to heat and with the cover (13) is in a protective position, the cover (13) is arranged, in the protective position, to protect the release means (18) but, when displaced, it is arranged to expose the release means and place the sprinkler in a standby mode in which the release means is intact so as to be able to react to heat and achieve a release of the sprinkler and place it in the active mode, and the means for achieving the displacement of the cover (13) comprises a device (6) which is displaceable with respect to the holder body (3) and which is arranged under fluid pressure to exert a force on a locking means (14, 17) in the cover (13) to make the locking means open and consequently displace the cover to said free position.
Description
Background of the invention [0001] The present invention relates to a sprinkler comprising a support body, at least one nozzle, a heat-activated release device and a cover which is locked in a protective position in front of said nozzle when the sprinkler is in an inoperative mode, so that Mechanically protect the release device, when the sprinkler is in the working mode, the cover can move to a release position, at this time it leaves the nozzle to expose the release device, and after the release device is released, the nozzle can spray out the fire extinguishing agent, the support body Includes an inlet for introducing extinguishing agent. [0002] Such sprinklers are known, for example, from US 3,727,695, US 4,014,388 and US 4,880,063. For example, covers are used to mechanically protect the release (US 3,727,695), or to provide an aesthetic sprinkler type that is hidden in the ceiling when in non-operating mode (US 3,727,695 and US 4,014,388). In such concealed sprinkler...
Claims
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Application Information
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