Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1983-06-14
1985-01-29
Lacey, David L.
Gas separation
Means within gas stream for conducting concentrate to collector
55137, 55138, 55146, 55152, 55385A, 55420, 422121, 361230, B03C 312, B03C 382
Patent
active
044963750
ABSTRACT:
An air cleaning device including an electrostatic apparatus which removes particulates from the air by causing them to be precipitated on an electrically charged grid. The device includes a dielectric conduit structure, open at both ends. One end is the air inlet and the other is the air outlet. Three sets of electrically charged elements are positioned within the conduit. Starting just within the inlet end, they are, in order: (1) a first grid structure maintained at a high negative electrical potential: (2) a needle electrode also maintained at a high negative electrical potential: (3) a second grid structure maintained at a high positive potential. The air molecules and particulates are charged negatively by the needle electrode and are forced away from the negatively charged first grid structure and drawn toward the positively charged second grid structure, by electrostatic forces, causing the air to move through the conduit. The negatively charged particulates are attracted to and precipitated on the second grid structure.
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