Apparatus for biological purification and filtration of air
First Claim
1. An apparatus for biological purification and filtration of gas, said apparatus comprising a power source (23), a coarse filter (1), an ionizer (5) formed by at least a pair of electrodes (6, 7), with a first of said pair of electrodes connected to a first terminal of the power source (23) and a second of said pair of electrodes connected to an opposite-in-sign terminal of the power source, and a fine filter (10), said coarse filter, ionizer and fine filter being arranged in a sequence such that gas flowing along a path through the apparatus will pass through the coarse filter, ionizer and fine filter in that order, said coarse filter comprising an electrostatic precipitator having at least three plates (3, 2, 4) arranged across the path of the gas flow adjacent to each other, said at least three plates comprising first and second outermost plates (2, 3) with a central plate (4) therebetween, said first and second outermost plates being made of gas-permeable and current-conducting material, with said first and second plates being connected electrically to the first and opposite-in-sign terminals of the power source respectively, the central plate (4) located therebetween being made of high-porous electret material.
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Accused Products
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).
94 Citations
11 Claims
- 1. An apparatus for biological purification and filtration of gas, said apparatus comprising a power source (23), a coarse filter (1), an ionizer (5) formed by at least a pair of electrodes (6, 7), with a first of said pair of electrodes connected to a first terminal of the power source (23) and a second of said pair of electrodes connected to an opposite-in-sign terminal of the power source, and a fine filter (10), said coarse filter, ionizer and fine filter being arranged in a sequence such that gas flowing along a path through the apparatus will pass through the coarse filter, ionizer and fine filter in that order, said coarse filter comprising an electrostatic precipitator having at least three plates (3, 2, 4) arranged across the path of the gas flow adjacent to each other, said at least three plates comprising first and second outermost plates (2, 3) with a central plate (4) therebetween, said first and second outermost plates being made of gas-permeable and current-conducting material, with said first and second plates being connected electrically to the first and opposite-in-sign terminals of the power source respectively, the central plate (4) located therebetween being made of high-porous electret material.
Specification