公开(公告)号：US06773480B1

公开(公告)日：2004-08-10

申请号：US10019619

申请日：2001-12-20

申请人： Wilhelm Köhler ,  Wilhelm Schönherr ,  Norbert Vorbach

发明人： Wilhelm Köhler ,  Wilhelm Schönherr ,  Norbert Vorbach

IPC分类号： B01D4602

CPC分类号： B01D46/521 ,  B01D29/111 ,  B01D29/21 ,  B01D46/2414 ,  F02M35/024

摘要： A ring filter comprising a star-shaped folded filtering material and a closure on both front sides thereof in the form of a closed end disc. This closure has a plate-shaped insert forming the central area of the closure and located radially inside the filtering material. The insert is made of a different material from that of the rest of the closure. The invention aims at providing a ring filter than can be rationally produced and that is more resistant and durable. To this end, the ring filter has a radially permeable tubular frame that extends approximately along the entire axial length of the ring filter that borders radially inward on the filtering material; and wherein the plate-shaped insert is connected to the tubular frame and wherein the material of the closure is a foamed plastic.

摘要翻译： 一种环形过滤器，其包括星形折叠过滤材料和封闭件，其封闭件在其两侧以闭合端盘的形式。 该封闭件具有形成封闭件的中心区域并且位于过滤材料径向内侧的板形插入件。 插入物由与封闭件的其余部分不同的材料制成。 本发明的目的是提供一种可以合理生产的环形过滤器，更耐用和耐用。 为此，环形过滤器具有径向可渗透的管状框架，其大致沿着环形过滤器的径向向内与过滤材料相接合的整个轴向长度延伸; 并且其中所述板形插入件连接到所述管状框架，并且所述封闭件的材料是发泡塑料。