Atmospheric air filtration unit, air pre-filtration unit, and associated air filtration system for removeable attachment thereof
First Claim
1. An air filtration unit comprising:
- a filter frame includingan upper section located on an upstream side of the air filtration unit, the upper section including an upstream-facing surface having a plurality of openings, anda lower section connected to the upper section and located downstream from the upper section;
an air filter secured inside the lower section of filter frame, the plurality of openings of the upper section providing fluid flow access to the air filter; and
a plurality of coupling members located on the filter frame, the plurality of coupling members configured to removeably secure a pre-filter attachment device to the upstream side of the air filtration unit via corresponding coupling members provided on the pre-filter attachment device, whereinthe plurality of coupling members are slotted protrusions that protrude outwardly from a surface of the filter frame, andeach of the slotted protrusions comprises two opposing sides, each of the opposing sides protruding outwardly from a surface of the filter frame and having a flange at a protruding end.
1 Assignment
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Accused Products
Abstract
An air filtration system including a pre-filtration unit having a filter section and a spacer section attached to the filter section and extending downstream from the filter section, a pre-filter attachment device having a pre-filter securing section and a first plurality of coupling members, and a filtration unit. The filter section includes a pre-filter. The spacer section includes an at least partially open end located on a downstream side of the spacer section to expose a downstream face of the pre-filter. The filtration unit includes a filter frame, an upper section thereof including an upstream-facing surface having a plurality of openings, a filter secured inside the lower section of filter frame, and a second plurality of coupling members located on the filter frame and coupleable with the first plurality of coupling members of the pre-filter attachment device to removeably secure the pre-filtration unit to the filtration unit.
14 Citations
22 Claims
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1. An air filtration unit comprising:
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a filter frame including an upper section located on an upstream side of the air filtration unit, the upper section including an upstream-facing surface having a plurality of openings, and a lower section connected to the upper section and located downstream from the upper section; an air filter secured inside the lower section of filter frame, the plurality of openings of the upper section providing fluid flow access to the air filter; and a plurality of coupling members located on the filter frame, the plurality of coupling members configured to removeably secure a pre-filter attachment device to the upstream side of the air filtration unit via corresponding coupling members provided on the pre-filter attachment device, wherein the plurality of coupling members are slotted protrusions that protrude outwardly from a surface of the filter frame, and each of the slotted protrusions comprises two opposing sides, each of the opposing sides protruding outwardly from a surface of the filter frame and having a flange at a protruding end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An air filtration system comprising:
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an air pre-filtration unit; a pre-filter attachment device including a pre-filter securing section and a first plurality of coupling members; and an air filtration unit including a filter frame having an upper section located on an upstream side of the air filtration unit, the upper section including an upstream-facing surface having a plurality of openings, and a lower section connected to the upper section and located downstream from the upper section; an air filter secured inside the lower section of filter frame, the plurality of openings of the upper section providing fluid flow access to the air filter; and a second plurality of coupling members located on the filter frame, the second plurality of coupling members being coupleable with the first plurality of coupling members of the pre-filter attachment device to removeably secure the pre-filter attachment device to the upstream side of the air filtration unit, wherein the pre-filter attachment device removeably secures the air pre-filtration unit to the air filtration unit. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification