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1. 发明授权

US5299364A Arrangement and method for treatment of webs using nozzles with negative pressure 失效
标题翻译：使用具有负压的喷嘴处理网的布置和方法
公开(公告)号：US5299364A
公开(公告)日：1994-04-05
申请号：US938952
申请日：1992-09-01
申请人： Pertti Heikkila , Jaakko Rintanen
发明人： Pertti Heikkila , Jaakko Rintanen
IPC分类号： B65H23/24 , D21F5/18 , D21F5/20 , F26B13/20 , F26B3/00
CPC分类号： D21F5/188 , B65H23/24 , F26B13/104 , B65H2406/112
摘要： The invention relates to an arrangement of nozzles with negative pressure intended for the treatment of webs. A nozzle directs a drying and supporting gas flow at the web and which has a box construction, and a nozzle space formed at one side of the nozzle. The nozzle space is provided with a nozzle slot defined by nozzle walls. One of the walls operates as a curved guide face which is fitted to turn the gas flow passed out of the nozzle slot, based on the Coanda effect, so as to make it parallel to the carrier face formed on the top face of the nozzle. At least one second nozzle slot is provided at a distance before said first nozzle slot, in the running direction of the web. A flow guiding fitted in connection with the second nozzle slot is arranged so that the flow has a substantially large velocity component perpendicular to the direction of running of the web. The velocity component parallel to the plane of running of the web of the flow passed out of the second nozzle slot is larger than zero.
摘要翻译：本发明涉及一种用于处理腹板的具有负压的喷嘴的布置。喷嘴引导干燥和支撑气流在腹板处并具有盒结构，以及形成在喷嘴一侧的喷嘴空间。喷嘴空间设有由喷嘴壁限定的喷嘴槽。其中一个壁作为弯曲的引导面进行操作，该弯曲引导面基于柯恩达效应而被安装成转过从喷嘴槽流出的气流，以使其平行于形成在喷嘴顶面上的载体面。至少一个第二喷嘴槽在所述第一喷嘴槽之间的距离处沿着所述幅材的运行方向设置。布置成与第二喷嘴槽连接的流动引导件被布置成使得该流动具有垂直于卷材运行方向的基本上大的速度分量。平行于从第二喷嘴槽流出的流动幅材运行平面的速度分量大于零。

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