Patent ID: 8216467
Filing Date: 2012-07-10
Classification: B01D

Abstract:
1. A filter device comprising: a filter housing having a fluid inlet for fluid to be cleaned, a fluid outlet for cleaned fluid, a main axis, an inlet part and a filtration part; at least one filter element held in said filter housing and having an inner fluid space bordered by and inside of a filter medium for fluid to flow therethrough to be cleaned, said filter medium separating said inner fluid space from an outer fluid space in said filter housing; a retrofittable fluid guide device connected in said housing downstream from said fluid inlet optionally forming one of a first flow path between said fluid inlet and said outer fluid space and a second flow path between said fluid inlet and said inner fluid space, said fluid guide device having an adapter plate and first and second set-up sites for said outer and inner fluid spaces, respectively, said first and second set-up sites having first and second fluid passage channels, respectively, penetrating said adapter plate that can be optionally blocked and opened to retrofit said fluid guide device, said first fluid passage channels of said first set-up site being located at a greater distance from said main axis than said second fluid passage channels of said second set-up site and being located on a circular line concentric with said main axis and with a radius positioning said first fluid passage channels exteriorly of said filter element; a seal on a peripheral side of said adapter plate between said inlet part and said filtration part inside said filter housing; and a coaxial socket extending from said adapter plate into said filtration part receiving said filter element and forming a flow path into said inner fluid space.