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1. 发明授权

US6129154A Spray nozzle, especially for spraying water in fire prevention systems 失效
标题翻译：喷嘴特别适用于防火系统喷水
公开(公告)号：US6129154A
公开(公告)日：2000-10-10
申请号：US635599
申请日：1996-04-22
申请人： Rolf Hoffmann , Jorg Mucke , Wilfried Heize
发明人： Rolf Hoffmann , Jorg Mucke , Wilfried Heize
IPC分类号： A62C31/02 , B05B1/34 , A62C2/00
CPC分类号： B05B1/3478 , A62C31/02 , B05B1/3447
摘要： A spray nozzle, especially for spraying water in fire prevention systems, has a housing in which there is a vortex chamber into which a first channel into which a first channel for supplying water opens essentially tangentially at a distance from the axis of the vortex and which has a first outlet orifice coaxial with the axis of the vortex. The spray nozzle also has a second outlet orifice arranged inside the vortex chamber so it is coaxial with the first outlet orifice and is located at the end of a second channel that is coaxial with the axis of the vortex. The second channel has an enlarged area upstream from the second outlet orifice, where the cross-sectional area at right angles to the axis of the channel increases in the direction of flow. furthermore, the cross-sectional area of the second channel at right angles to the axis of the channel does not decrease further downstream from the enlargement as seen in the direction of flow. The second outlet orifice is positioned so close to and upstream from the first outlet orifice that a low pressure zone is formed in the enlarged area, distributing the flowing water to form a spray cone that comes out of the second outlet orifice and spreads out inside a spray cone coming out of the first outlet orifice. This yields a uniform fire extinguishing effect and the width of the spray created by the spray nozzle is increased. The spray nozzle according to this invention is simple and inexpensive to manufacture.
摘要翻译：特别是用于在防火系统中喷洒水的喷嘴具有壳体，其中存在涡流室，用于供应水的第一通道的第一通道基本上相对于涡流的轴线相切地开口，第一通道具有与涡流轴线同轴的第一出口孔。喷嘴还具有布置在涡流室内部的第二出口孔，使得其与第一出口孔同轴并且位于与涡流轴线同轴的第二通道的端部。第二通道具有从第二出口孔上游的扩大区域，其中与通道的轴线成直角的横截面面积在流动方向上增加。此外，与通道的轴线成直角的第二通道的横截面面积在流动方向上看不会从放大的下游进一步下降。第二出口孔定位成与第一出口孔接近和上游，在放大区域形成低压区，分配流水形成从第二出口孔排出的喷雾锥体，喷雾锥从第一个出口孔出来。这产生均匀的灭火效果，并且由喷嘴产生的喷雾的宽度增加。根据本发明的喷嘴简单且制造成本低廉。

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