Patent ID: 8945388
Filing Date: 2015-02-03
Classification: B01D

Abstract:
1. A filter, comprising: a first filter medium; a second filter medium spaced from said first filter medium; a flow space between said first and second filter media; a separation and flow guidance device in said flow space, said device having a perforated first boundary wall engaging an inside surface of said first filter medium, having a perforated second boundary wall engaging an outside surface of said second filter medium and having first and second duct channels between said boundary walls, said first duct channels being open to said first boundary wall to be in fluid communication with said first filter medium via said first boundary wall and being closed to said second boundary wall to not be in fluid communication with said second filter medium via said second boundary wall, said second duct channels being open to said second boundary wall to be in fluid communication with said second fluid medium via said second boundary wall and being closed to said first boundary wall to not be in fluid communication with said first filter medium via said first boundary wall; and a corrugated member located between and fixedly attached to said boundary walls to define said duct channels.