초록 ▼

A filter for removing contaminants from compressed gas is disclosed. The filter features an inverse flow regime wherein gas entering the filter first flows downwardly and then reverses direction before encountering any filter media. The filter has a connection head with a gas inlet, a gas outlet and

A filter for removing contaminants from compressed gas is disclosed. The filter features an inverse flow regime wherein gas entering the filter first flows downwardly and then reverses direction before encountering any filter media. The filter has a connection head with a gas inlet, a gas outlet and oppositely disposed openings separated by a central partition. The openings are sealingly enclosed by elongated tubular housings which releasably attach to the head. The gas inlet communicates with one side of the partition and the outlet communicates with the opposite side. A plurality of individual filter elements are arranged on either side of the partition and filter out aerosol, vapor and particulate contaminants from the compressed gas. The filter elements are releasably mounted to the central partition and can be removed and replaced independently of one another. The tubular housings are vertically oriented and a valve is provided in the bottom of the lower housing to drain accumulated liquid from the filter.

대표청구항 ▼

[ We claim:] [1.] An apparatus for filtering a plurality of different contaminants from gas, said apparatus comprising:a connection head having upper and lower oppositely disposed openings;a partition separating said openings, said partition having a lower side facing toward said lower opening, an u

[ We claim:] [1.] An apparatus for filtering a plurality of different contaminants from gas, said apparatus comprising:a connection head having upper and lower oppositely disposed openings;a partition separating said openings, said partition having a lower side facing toward said lower opening, an upper side facing toward said upper opening, and an aperture therethrough;a gas inlet and a gas inlet passageway extending from said inlet through said connection head to said partition lower side;a gas outlet passageway extending from above said partition upper side through said connection head and including a gas outlet;upper and lower tubular housings;means for releasably attaching said tubular housings to said head, said upper and lower tubular housings sealingly enclosing said upper and lower openings respectively;a lower filter element disposed within said lower housing for removing a first contaminant from the gas;an upper filter element comprising a coalescing filter disposed within said upper housing for removing oil aerosol from the gas, said coalescing filter comprising borosilicate glass microfibers;said upper and lower filter elements each having separate attachment means at one end for releasably attaching said filter elements to respective partition sides independent of each other;said upper and lower filter elements each having sealing means at said one end for sealingly attaching said filter elements to said respective partition sides in surrounding relationship with said aperture;said lower filter element further having elongated impermeable sidewalls having an opening in the end opposite said one end, said sidewalls being disposed adjacent to said lower housing in a spaced apart relationship forming a duct from said partition lower side to said opening;the gas entering at said inlet and flowing through said inlet passageway to said duct, the gas further flowing downwardly through said duct to said opening in said other end of said lower filter element, next flowing upwardly through said lower filter element, then passing upwardly through said aperture and through said upper filter element, the gas then passing through said gas outlet passageway and exiting through said gas outlet.