公开(公告)号：US20130306547A1

公开(公告)日：2013-11-21

申请号：US13473028

申请日：2012-05-16

Applicant: DOUGLAS A. D. NORRIS

Inventor： DOUGLAS A. D. NORRIS

IPC: B01D27/06 ,  D04H3/04 ,  B31B1/26 ,  B01D27/08 ,  B23P17/00

CPC classification number: B01D29/111 ,  B01D29/232 ,  B01D46/2411 ,  B01D46/522 ,  B01D2201/0407 ,  B01D2201/122 ,  Y10T29/49

Abstract: Pleated filtration media and filtration devices generally include a filter media radially disposed about the annular perforated inner core, the filter media comprising a plurality of circumferentially disposed linear pleats extending from the inner core to a constant height (h) defined by an outer diameter; and one or more intermediate pleats circumferentially disposed between adjoining linear pleats, wherein each one of the intermediate pleats has a height less than the constant height, and wherein the height of the intermediate pleats progressively decreases in a clockwise or a counter clockwise direction. Also disclosed are methods for increasing surface area of a pleated filtration media.

Abstract translation: 折叠过滤介质和过滤装置通常包括围绕环形穿孔内芯径向设置的过滤介质，过滤介质包括从内芯延伸到由外径限定的恒定高度（h）的多个周向布置的线性褶皱; 以及一个或多个周向地设置在邻接的线状褶皱之间的中间褶皱，其中每个中间褶皱具有小于恒定高度的高度，并且其中中间褶皱的高度在顺时针或逆时针方向上逐渐减小。 还公开了增加打褶过滤介质表面积的方法。