| 摘要 |
A bi/multi-directional air flow filter cartridge includes a filter pad and a filter pad base. The filter pad includes: outer filter walls made of a filter material suitable for filtering at least particulates, the walls being spaced apart to define an inner area therebetween, and to allow air to pass into the inner area from two or more directions; and a gas/vapor adsorber/absorber member, located within the inner area defined by the outer filter walls, the filter walls maintaining a spacing between inner surfaces of the walls and the gas/vapor adsorber/absorber member, wherein the gas/vapor adsorber/absorber member includes an adsorber/absorber upstream portion of its outer surface structured to, in response to a source of suction, receive air that has already been filtered by the filter walls, such that the air passes through at least a minimum length of the gas/vapor adsorber/absorber member and then out of an opening in the filter pad at a downstream portion of the gas/vapor adsorber/absorber member. The filter pad base is attached to the filter pad and includes a connection member located in association with the filter pad opening. The base removably connects the filter unit to a source of suction.
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