A conical filter device inserts into a duct having flow passing from upstream to downstream. The filter device includes fluted filter media (62) having flutes formed therein and a housing (54). The filter forms a seal (59) between the outer edge of the filter at the downstream side and the housing. The upstream face of the filter is conical-shaped in a first embodiment and frustoconical in a second embodiment with the housing roughly corresponding to the shape of the filter. The filter elements (62) are formed by winding layers of filter media to form a circular cross-section. The elements are moved axially as they are wound or placed on a shaping form while the sealant is still piable to shape the element.
申请公布号
CA2252551(A1)
申请公布日期
1997.11.06
申请号
CA19972252551
申请日期
1997.04.25
申请人
DONALDSON COMPANY, INC.
发明人
GILLINGHAM, GARY R.;WAGNER, WAYNE M.;STEINBRUECK, EDWARD A.;CARTER, STEVEN A.;RISCH, DANIEL T.;ROTHMAN, JIM C.;TOKAR, JOSEPH C.;WAHLQUIST, FRED H.