Title:
段状ひだを有するフィルタ
Document Type and Number:
Japanese Patent JP2006512187
Kind Code:
A
Abstract:
The present invention relates to a novel filter element having a septum with a staged pleating that repeats a pleating sequence having a major (longest) pleat, a minor (shortest) pleat and at least one intermediate pleat therebetween. The intermediate pleat(s) have pleat heights that are evenly distributed within the range of pleat heights bounded by the pleat height of the minor pleat and the pleat height of the major pleat. In two particular embodiments of the invention, the pleat height ratios of the major, intermediate and minor pleats are 3:2:1 and 4:3:2:1. In an filter element, the pleated septum may be held between an inner core and an outer guard. The tip of the major pleat in each pleating sequence may be in contact with the inner core of the filter element. The septum may also include drainage layers on upstream and downstream of the filter material layer.
Inventors:
Tom Music
Kevin Knebel
Alex Vinarov
Kevin Knebel
Alex Vinarov
Application Number:
JP2004540103A
Publication Date:
April 13, 2006
Filing Date:
September 17, 2003
Export Citation:
Assignee:
Domnik Hunter Advanced Filtration Incorporated
International Classes:
B01D39/14; B01D27/06; B01D29/07; B01D29/21; B01D46/00; B01D46/24; B01D46/52
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro