AIR FILTER ARRANGEMENT AND A METHOD FOR MANUFACTURING THE SAME
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Accused Products
Abstract
An air filter arrangement comprises an air channel, a first air filter mounted in the air channel, which first air filter comprises a filter frame provided with at least one passage, and a filter body comprising electrostatically chargeable fibres attached to the filter frame. The filter body extends from the filter frame to a position located at a distance from and downstream the filter frame. The air filter arrangement comprises a second air filter comprising a filter cloth which, in a mounted state, is adapted to extend across the air channel such that it is flown through by air flowing in a substantial longitudinal direction in the air channel, and that the second air filter is mounted in the air channel in a position located downstream the first air filter with respect to the flow direction of the air through the air channel.
19 Citations
22 Claims
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1-11. -11. (canceled)
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12. An air filter arrangement comprising:
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an air channel; a first air filter mounted in the air channel, which first air filter comprises a filter frame provided with at least one passage for through flow of air; a filter body comprising electrostatically chargeable fibres which are attached to the filter frame such that the filter body obtains an extension from the filter frame to a position located at a distance from and downstream of the filter frame with respect to the intended flow direction of the air through the air channel; a second air filter, comprising a filter cloth which, in a mounted state, is adapted to extend across the air channel such that air flows through the filter cloth in a substantially longitudinal direction in the air channel; the second air filter being mounted in the air channel in a position located downstream of the first air filter with respect to the intended flow direction of the air through the air channel. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method for manufacturing an air filter arrangement comprising an air channel, wherein the method comprises:
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mounting a first air filter in the air channel, which first air filter comprises a filter frame provided with at least one passage for through flow of air and a filter body comprising electrostatically chargeable fibres which are attached to the filter frame, such that the filter body obtains an extension from the filter frame to a position located at a distance from and downstream the filter frame with respect to the flow direction of the air through the air channel; and mounting a second air filter which comprises a filter cloth in the air channel, such that the filter cloth extends across the air channel such that it is flown through by air which flows in a substantial longitudinal direction in the air channel and mounting the second air filter in the air channel in a position downstream the first air filter with respect to the flow direction of the air through the air channel.
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Specification