Fluid sprinkling – spraying – and diffusing – One fluid stream impinges upon another
Patent
1996-09-06
1998-06-23
Morris, Lesley D.
Fluid sprinkling, spraying, and diffusing
One fluid stream impinges upon another
239548, B05B 126
Patent
active
057693277
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present, invention relates to a nozzle for generating and distributing water fog through discharge orifices, of which at least two converge and collide at a point outside the nozzle, for example for extinguishing fires, and comprising an attachment for connection with a water conduit, which attachment is provided with a support surface for a nozzle head.
BACKGROUND OF THE INVENTION
Sprinklers are the collective denomination for devices used for fighting fires, when a liquid is discharged automatically in order to overcome fire in a room. It is distinguished between conventional sprinklers and high pressure sprinklers. Previously, only conventional sprinklers were used. These extinguished the fire but at the same time caused immense water damages because of the large amount of water which was consumed during extinction. The consequence was even more disastrous for vessels which capsized because of the reduced stability caused by the increased amount of water. During a later period one went over to fit up rooms with non-inflammable material. These non-inflammable materials did not start to burn but instead generated toxic gas. In recent years, high pressure sprinkler systems have been developed. These have proven to be effective when fighting fires in rooms since only a limited amount of water is used. There are a number of prior art high pressure sprinkler systems with different nozzle designs.
There are a number of problems with these prior art nozzles. One known nozzle is composed of about twenty-two details. This leads to high costs for manufacturing and assembly. The discharge openings in the nozzle decides the drop size of the liquid and the flow. The spreading of fog is depending upon this drop size and this flow. The ability to penetrate into the fire is also depending upon the drop size and the flow.
It is associated with very high costs to alter the size of the nozzles. This implies that the size of the nozzles is seldom changed. Usually, a number of alternative nozzle sizes are contemplated. The possibility to influence conditions depending upon which type of fire which might be encountered, is therefore limited for these prior art nozzles. The loss of energy is high because of the shape of the discharge openings in the nozzles. The exit velocity is only 60 m/s at 200 bar. With other words, the design of the nozzles cause limitations concerning the volume of the fog spreading, the area, speed and precision. So far, there have been two alternatives. The first alternative results in an inferior spreading of the liquid, but in an excellent drop size. The other alternative results in an excellent spreading of the liquid, but in an inferior drop size.
It is known that if two or more water jets with very high speed is brought to collide in the air, these water jets will disintegrate into a fog which can move rapidly away from the nozzle. However, prior art high pressure nozzles are designed comparatively clumsy and are very expensive to produce, because of the high demands for precision in the design of the jet orifices. Thus, the cost for installation of high pressure sprinkler systems have been high.
TECHNICAL PROBLEM
The present invention is aimed at solving the above mentioned problems at prior art high pressure nozzles.
THE SOLUTION
For this object, the invention is characterized in that the nozzle head is provided with at least one support surface cooperating with the support surface of the attachment, and that the discharge orifices are located at the support surfaces between the head and the attachment.
The high pressure nozzle according to the present invention is designed so that a small amount of water, 1-25 l/minute, at a high pressure of 15-250 bar, is disintegrated to a fog. The fog exits the nozzle at a very high velocity, 50-200 m/s (200 m/s at 200 bar) and with a large impact force (as compared with known nozzles 60 m/s at 200 bar). The effective range of the nozzle is therefore about 10 times longer than the corresponding for prior art nozzles.
By c
REFERENCES:
patent: 2302021 (1942-11-01), Freeman
patent: 2499092 (1950-02-01), Burnham
patent: 2647800 (1953-08-01), Burnham
patent: 3380664 (1968-04-01), Miller et al.
patent: 3384307 (1968-05-01), Moen
patent: 3403860 (1968-10-01), Shames et al.
patent: 3504893 (1970-04-01), Susuki et al.
patent: 3547353 (1970-12-01), Pecka
patent: 3617002 (1971-11-01), Symmons
patent: 4129257 (1978-12-01), Eggert
patent: 5518183 (1996-05-01), Waldrum
Kjellberg Anders
Kure Bo
Kure Fastighets & Forvaltnings AB
Morris Lesley D.
LandOfFree
Nozzle for spreading water fog does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nozzle for spreading water fog, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nozzle for spreading water fog will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1387330