| 摘要 |
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,...) leading to at least one nozzle (6,...) with an opening (3,...) including a first boring (4,...) and a second boring (5,...), the first boring (4,...) comprising a first diameter (d) and the second boring (5,...) a second diameter (D), characterized by a combination in which: the first boring (4,...) has a diameter (d) that is 0.1 to 0.9 times the diameter (D) of the second boring (5,...), the length (s) of the first boring (4,...) is 0.25 to 15 times the diameter (D) of the first boring (4,...), the length (s) of the second boring (5,...) is approximately 1 to 15 times the diameter (D) of the second boring (5,...), and the first boring (4,...) and the second boring (5,...) are at least essentially aligned and the frame (1,...) comprising a main channel (7,...) from which said nozzle (6,...) diverges at an angle from the main channel (7,...) so that flow of medium along the first boring (4,...) and the second boring (5,...) is at an angle in relation to the general flow in the main channel (7,...).
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