MOVING SORBENT FILTER DEVICE

摘要

There is provided a novel air sorbent filter device for use in a heating, ventilation or air conditioning systems or the like where the filter devices shows little or no pressure drop over its useful life. The invention air filter device comprises a housing having an air delivery fan, preferably a fan having an axial air inlet and a radial air outlet. An axially rotating fan and filter unit is located between the air inlet and air outlet. The filter unit is comprised of at least one filter element with flow through air channels. These flow channels allow air to pass unimpeded in an air channel formed between the adjacent front and back faces. Preferably, multiple filter elements are spaced in the radial direction and are parallel with the axis of rotation. The fan and filter units are also provided with air moving means, which can be air moving elements and/or air filter elements. The air moving means establish the airflow with a general airflow direction at a given pressure head and volumetric flowrate. With the preferred centrifugal type fan the air is drawn in axially with the fan and filter unit axis of rotation and discharged radially outward, the air moving elements and/or filter elements are spaced from adjacent air moving elements and/or filter elements to allow the unimpeded passage of air between the air moving elements and/or filter elements.