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Centrifugal, Self Cleaning Air Filter

IP.com Disclosure Number: IPCOM000092180D
Original Publication Date: 1968-Oct-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Hafer, CH: AUTHOR [+3]

Abstract

In machines requiring cleaning systems, an air filter forms a part of the system to remove small particles of dust, dirt, and other matter from the air passing through it. After a period of use, the filter material becomes loaded with particles, inhibiting the passage of air and necessitating the replacement of the filter. For example, such a cleaning system is used in electrophotographic machines to remove toner particles from air in the exhaust system of the station for cleaning residual toner from the photoconductive member.

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Centrifugal, Self Cleaning Air Filter

In machines requiring cleaning systems, an air filter forms a part of the system to remove small particles of dust, dirt, and other matter from the air passing through it. After a period of use, the filter material becomes loaded with particles, inhibiting the passage of air and necessitating the replacement of the filter. For example, such a cleaning system is used in electrophotographic machines to remove toner particles from air in the exhaust system of the station for cleaning residual toner from the photoconductive member.

With regard to self-cleaning air filter 1, the filter material is automatically cleaned, eliminating the need for replacing the filter material. Filter 1 comprises rotatable cylindrical hollow drum 2 having a perforated outer periphery 3 covered by filter material 4 and a perforated inner periphery 5. The latter is integral with air filter housing 7. This encloses drum 2 but is spaced from its periphery 3 to provide, from inlet 8 of housing 7, a path 9 for the incoming air, carrying particles to be filtered, around the drum to a container 10 for the filtered particles 11. The air, as it flows along path 9, is drawn through filter material 4 and through drum 2 and out tube 6.

Filter 1 can be operated in two modes, continuous and intermittent. In the continuous mode, drum 2 is rotated continuously during which the air passes through material 4 and the particles, due to centrifugal force, are either preve...