Combination blower wheel and filter cartridge system for HVAC applications
Assignee3M Innovative Properties Company
InventorsMichael R. Harms, Charles D. Cowman
Life of this patent
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Abstract
In one embodiment, the filter cartridge comprises a mesh structure forming a generally annular cylinder comprising a center opening, a plurality of compartments containing a filter medium, and spaces between the compartments. The spaces between the compartments comprise substantially unimpeded airflow passages that permit airflow even when the filter medium is fully loaded.
Claims26
A filter cartridge comprising a mesh structure forming a generally annular cylinder comprising a center opening, a plurality of compartments containing a filter medium, and spaces between the compartments, the spaces between the compartments comprising substantially unimpeded air flow passages that permit airflow even when the filter medium is fully loaded.
A filter cartridge comprising:
- a mesh structure forming a generally annular cylinder having a center opening comprising a first mesh layer having a plurality of raised portions and a second mesh layer engaged with the first mesh layer such that the raised portions comprise compartments;
- a filter medium retained in the compartments;
- and
- spaces between the raised portions comprising substantially unimpeded air flow passages that permit airflow even when the filter medium is fully loaded.
A filtration system that rotates in conjunction with a blower wheel, the blower wheel having a plurality of fan blades arranged in a spaced relationship radially around a blower cavity to define a flow path extending radially outward from the blower cavity through the fan blades when the blower wheel is rotating, the filtration system comprising:
- a filter cartridge releasably attachable to the blower wheel in an engaged configuration, the filter cartridge comprising a mesh structure having a center opening and a mesh surface configured to be generally adjacent to the fan blades and to extend across at least a portion of the flow path when in the engaged configuration, the mesh structure comprising a plurality of compartments containing a filter medium and a plurality of substantially unimpeded air flow passages that permit airflow even when the filter medium is fully loaded.
Dependencies are inferred from the claim text.