SPRAYHEAD WITH NOZZLES MADE BY BORING

Title:

SPRAYHEAD WITH NOZZLES MADE BY BORING

Document Type and Number:

WIPO Patent Application WO2001045799

Kind Code:

A8

Abstract:

The invention relates to a spray head for producing a liquid mist and preferably for extinguishing fire, the spray head comprising a frame (1''''), an inlet (2'''') and a passage (7''''a, 7'''') leading to at least one nozzle (6''''a) with an opening (3''''a) including a first boring (4''''a) and a second boring (5''''a), the first boring comprising a first diameter and the second boring a second diameter. In order for the spray head to have a good efficiency and a very simple construction and to be able to deliver medium in the form of mist with relatively low pressure and mist with relatively high momentum at high pressure, the spray head is characterized in that by a combination in which- the first boring (4''''a) has a diameter that is 0.1 to 0.9 times the diameter of the second boring (5''''a); the length of the first (4''''a) boring is 0.25 to 15 times the diameter of the first boring; the length of the second boring (5''''a) is approximately 1 to 15 times the diameter of the second boring, and the first boring and the second boring are at least essentially aligned and the frame (1'''') comprises a main channel ( 7''''), from which said nozzle (6''''a) diverges at an angle theta from the main channel so that flow of medium along the first boring (4''''a) and the second boring (5a'''') is at an angle in relation to the general flow in the main channel. The invention relates also to a method for forming from a block of material a nozzle of a spray head.

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Inventors:

SUNDHOLM GOERAN (FI)

Application Number:

PCT/FI2000/001123

Publication Date:

February 28, 2002

Filing Date:

December 22, 2000

Export Citation:

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Assignee:

MARIOFF CORP OY (FI)
SUNDHOLM GOERAN (FI)

International Classes:

A62C31/02; B05B1/00; B05B1/02; B05B1/14; B05B7/04; (IPC1-7): A62C31/02; B05B1/00

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