Apparatus for biological purification and filtration of air
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United States of America Patent
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Dec 12, 1995
Grant Date -
N/A
app pub date -
May 13, 1994
filing date -
May 13, 1992
priority date (Note) -
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Abstract
The invention relates to apparatus for biological purification and filtration of air. The apparatus includes a coarse filter (1), an ionizer (5), an additional plate (9) and a fine filter (10), which are installed in this order along the path of the gas flow, and a power source (23). The coarse filter (1) is essentially an electrostatic precipitator consisting of three plates (2,3,4) adjacent to each other, the outer-most (2,3) of which are made of a cellular metal and are connected electrically to the opposite-in-sign terminals of the power source (23), whereas the central plate (4) is made of polyurethane foam. The coarse filter (1) abuts closely on the cylindrical nondischarge electrode (6) of the ionizer (5).
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