Gas separation: apparatus – With timing or changeable programming means – For advancing filter media
Patent
1999-03-09
2000-11-28
Smith, Duane
Gas separation: apparatus
With timing or changeable programming means
For advancing filter media
96424, 96425, 7386351, 55354, B01D 1900
Patent
active
061529982
ABSTRACT:
An automatic filter cartridge in accordance with the present invention includes a frame which is formed with an aperture and an elongated filter medium which is attached to a supply roller and a take-up roller. Specifically, the supply and take-up rollers are placed into respective supply and take-up containers which are mounted on the frame across the aperture. The frame is then positioned in the ducting of an air conditioning system to filter the airflow through the filter medium which extends across the aperture. To monitor the airflow through the ducting, the automatic filter cartridge can further include a computer. With this configuration, a sensor is positioned in the ducting to monitor the airflow through the ducting. When the sensor indicates the filter medium in the ducting is dirty, the computer activates a motor to rotate the take-up roller. As the take-up roller rotates, the dirty filter medium from the aperture is advanced and taken up in the take-up roller, and clean filter medium from the supply roller is advanced to cover the aperture.
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Federal Air Conditioning Technologies, Inc.
Pham Minh-Chau T.
Smith Duane
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