초록 ▼

An air cleaning method and apparatus is disclosed in several embodiments. In one set of embodiments, there is described an air cleaning method and apparatus in which air to be cleaned is drawn toward and through a filter in a particular direction. Periodically, reverse pulses of air are directed thr

An air cleaning method and apparatus is disclosed in several embodiments. In one set of embodiments, there is described an air cleaning method and apparatus in which air to be cleaned is drawn toward and through a filter in a particular direction. Periodically, reverse pulses of air are directed through the filter in a direction opposite to normal flow to interrupt the flow of air and to dislodge collected particles from the uncleaned air side of the filter and to enable migration of the particles toward the downstream lower end of the filter. In accordance with other embodiments of the present invention, there is described the addition of inertial precleaner devices located proximate the unfiltered side of each filter for inertially separating heavy particulate matter from the uncleaned air prior to filtration. In addition, the inertial precleaner devices may have closure means operable during the periodic reverse pulse cleaning to remove the dislodged collected particles and prevent reentrainment on the filter.

대표청구항 ▼

A cleaner apparatus for removing particulate matter from air, comprising, in combination: (a) a housing having an unfiltered air inlet, a filtered air outlet and a scavenge means distant from said inlet whereby an air flow may be established from said inlet to said outlet and from said inlet to said

A cleaner apparatus for removing particulate matter from air, comprising, in combination: (a) a housing having an unfiltered air inlet, a filtered air outlet and a scavenge means distant from said inlet whereby an air flow may be established from said inlet to said outlet and from said inlet to said scavenge means; (b) a filter assembly within said housing including: (1) a filter having unfiltered and filtered sides, said filtered side being isolated from unfiltered air and wherein said isolated side is in fluid communication with said filtered air outlet: (2) a louvered precleaner located proximate said unfiltered side and defining an intermediate space between said unfiltered side and said precleaner, said precleaner including a divider plate having a plurality of successive louvers therein, each of said louvers defining a passageway through said divider into said intermediate space, said passageways facing generally in the direction of said air flow from said air inlet to said scavenge means whereby said louvers will cause inertial separation of particulate matter suspended in said air flow; (3) a reverse pulsed jet located proximate said filtered air side, said jet intermittently operable to provide a reverse flow of air through said filter and out of said unfiltered side so that particulate matter will become dislodged therefrom and enter said intermediate space; (4) closure means responsive to said reverse flow for blocking each of said passageways; and (5) outlet means in said intermediate space for putting said space in fluid communication with said scavenge means and for constantly exhausting said reverse flow out of said space so that particulate matter suspended in said flow will tend not to be re-entrained on said unfiltered air side.