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FILTRATION METHOD AND A FILTER DEVICE FOR REMOVING IMPURITIES FROM THE AIR OF A LIMITED SPACE AND AN APPARATUS FOR REMOVING CARBON DIOXIDE FROM THE AIR OF AN AIR-RAID SHELTER
FILTRATION METHOD AND A FILTER DEVICE FOR REMOVING IMPURITIES FROM THE AIR OF A LIMITED SPACE AND AN APPARATUS FOR REMOVING CARBON DIOXIDE FROM THE AIR OF AN AIR-RAID SHELTER
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机译:用于从有限空间的空气中去除杂质的过滤方法和过滤装置以及用于从防空罩的空气中去除二氧化碳的装置
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摘要
A filtering method and a filter device (10) for removing impurities from the breathing air (24) in a room, an air raid shelter or a vehicle. According to the filtering method, the air to be filtered is driven through a carbon dioxide filter (13) by a fan (15), with the result that at least a portion of the carbon dioxide and/or mold spores and other impurities in the air are trapped in the carbon dioxide filter. After the filtering, the filter is regenerated and the carbon dioxide and/or mold spores trapped in it are removed by a technique whereby air heated by a thermal resistor (20) is passed through the filter, this air preferably consisting of the same air to be filtered.
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