Device and method for air filtration
First Claim
1. Device for air filtration comprisinghousing having at least one part of a wall adapted to be comprised of an air filter, a suction fan mounted inside the housing to suck in air from the surroundings through said air filter, and at least one fan exhaust for filtered, cleaned air, said air filter including at least two different parallel coupled filter units, which are adapted to clean the air each in a different way, the different filter units being adjusted to each other with respect to pressure drop for air to be cleaned passing the filter units so that in operation a predetermined part of total sucked-in air to be cleaned passes through each respective filter unit and thus is subjected to filtration through a respective filter unit, and elements positioned in the housing for mixing the differently cleaned parts before the exhaust.
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Abstract
A method and a device for air filtration, whereby air is drawn from the surroundings of a house through air filters including at least a portion of the wall of the house and is blown out to the surroundings in cleaned condition. Air is drawn through at least two different parallel coupled filter units, which clean the air in a corresponding number of ways. Predetermined fractions of total drawn-in air passes through the respective different filter units and thus are subjected to corresponding cleaning by the different filter units being adjusted to each other with respect to pressure drop. The differently cleaned fractions are mixed before exhaust.
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Citations
21 Claims
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1. Device for air filtration comprising
housing having at least one part of a wall adapted to be comprised of an air filter, a suction fan mounted inside the housing to suck in air from the surroundings through said air filter, and at least one fan exhaust for filtered, cleaned air, said air filter including at least two different parallel coupled filter units, which are adapted to clean the air each in a different way, the different filter units being adjusted to each other with respect to pressure drop for air to be cleaned passing the filter units so that in operation a predetermined part of total sucked-in air to be cleaned passes through each respective filter unit and thus is subjected to filtration through a respective filter unit, and elements positioned in the housing for mixing the differently cleaned parts before the exhaust.
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12. Method for air filtration comprising
sucking air in from surroundings of a housing through an air filter comprising at least a portion of the wall of the housing, and blowing out the sucked in air through an exhaust to the surroundings in cleaned condition, the air being drawn through at least two different parallel coupled filter units, which clean the air, each in a different way, the different filter units being adjusted to each other with respect to pressure drop for air to be cleaned passing the respective filter units such that in operation predetermined parts of total sucked-in air passes through and is cleaned by the respective different filter units, and the differently cleaned parts are mixed before exhaust.
Specification