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A centrifugal air cleaning apparatus includes a housing defining a filter compartment containing a generally tubular filter cartridge having the open upper end thereof in communication with an air outlet opening through the top wall of the filter compartment. A vacuum source is provided in communica

A centrifugal air cleaning apparatus includes a housing defining a filter compartment containing a generally tubular filter cartridge having the open upper end thereof in communication with an air outlet opening through the top wall of the filter compartment. A vacuum source is provided in communication with that air outlet opening to effect vacuum pressure within the filter compartment. An air inlet opening through a side wall of the filter compartment has a multi-baffled flame arrestor associated therewith for extinguishing sparks in the fumes being drawn into the filter compartment and for directing the incoming air flow tangentially of the filter cartridge so that a portion of the pollutants carried in the fumes are separated by gravity before the fumes contact the filter cartridge. An injector conduit is provided within the flame arrestor to facilitate blowdown. A precoat feed conduit is supported in the filter compartment in upright spaced relation from the filter cartridge and has a plurality of vertically spaced outlet ports facing the cartridge for uniform distribution of precoat material under the filter cartridge. Efficient blowdown of the filter cartridge is accomplished by a diffuser hose extending downwardly through the filter cartridge, which hose has a plurality of vertically and circumferentially spaced apart outlet ports for directing multiple blasts of air radially outwardly from the hose along the full extent of the height of the filter cartridge. Collected dust is removable from the filter compartment either by a removable dust collection pan or automatically by an eductor associated with a hopper baffle at the base of the filter compartment.

대표청구항 ▼

A centrifugal air cleaning apparatus, comprising, a housing defining a filter compartment including opposite end walls, and peripheral side walls connected to and extending between said opposite end walls, one end wall having an air outlet opening generally centered thereon, a vacuum source, fluid p

A centrifugal air cleaning apparatus, comprising, a housing defining a filter compartment including opposite end walls, and peripheral side walls connected to and extending between said opposite end walls, one end wall having an air outlet opening generally centered thereon, a vacuum source, fluid passage means establishing communication between said vacuum source and air outlet opening, a generally tubular filter cartridge having a closed bottom end and an open upper end, means for mounting said filter cartridge in said filter compartment with said open upper end connected to said air outlet opening so that air flow from said open upper end of the filter is directed through said air outlet opening, an air inlet opening through one of said peripheral side walls, and a flame arrestor operatively associated with said air inlet opening, such that air flow through said air inlet opening is directed through said flame arrestor, said flame arrestor including a plurality of flow diverting surfaces for extinguishing sparks in air passing therethrough, said flame arrestor being operative to direct air into said filter compartment generally tangentially of said filter cartridge thereby to effect centrifugal air flow within said filter compartment.