Patent ID: 6210469
Filing Date: 2001-04-03
Classification: A47L,B01D

Abstract:
A filter arrangement comprising:(a) a housing including a dirty airflow inlet and a clean airflow outlet;(i) said inlet defining a first cross-sectional area;(b) a first air expansion chamber in said housing downstream of said inlet; said first chamber defining a second cross-sectional area larger than said first cross-sectional area;(i) said first chamber defining a particle collection container;(c) a second chamber in said housing downstream of said first chamber; said second chamber having a third cross-sectional area smaller than said second cross-sectional area;(d) a first region of filtering media between said first and second chambers;(i) said first region of filtering media constructed and arranged to remove at least a portion of particles from the dirty airflow and deposit the particles in said particle collection container;(e) a third chamber in said housing downstream from said second chamber;(i) said third chamber defining a clean air plenum;(f) a second region of filtering media downstream of said second chamber;(i) said second region of filtering media being oriented within said third chamber;(ii) said second region of filtering media constructed and arranged to remove at least a portion of particles from the dirty air flow;(iii) said second region of filtering media comprising a removable and replaceable element of fluted media;(A) said fluted media comprising a plurality of flutes; each of said flutes having an upstream portion and a downstream portion;(i) selected ones of said flutes having the upstream portion open and downstream portion closed, and selected ones of said flutes having the upstream portion closed and downstream portion open;(iv) said second region of filtering media including a handle member projecting therefrom; said handle member secured to an inner core of said second region of filtering media;(A) said handle member including a projection sized to be grasped by a human hand; and(v) said second region of filtering media including a seal member secured to an outer periphery thereof; said seal member forming a seal between said second and third chambers.