Multi-stage hood filter system
AssigneeStreivor, Inc.
InventorJeffrey S. Lambertson
Life of this patent
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Abstract
A filtration system for a ventilation hood includes a first filter and a second filter, operatively disposed in series. The first filter is configured to be mounted within the ventilation hood, and has an air inlet, an air outlet, and a grease outlet. The second filter includes a filter material with an upstream surface and a downstream surface, an upstream housing element abutting the upstream surface of the filter material, and a downstream housing element abutting the downstream surface of the filter material. The housing elements include openings, and hold the filter material in compression.
Claims20
A filtration system for a ventilation hood, comprising:
- a first filter configured to be mounted within the ventilation hood, comprising an air inlet, an air outlet, and a first filter material;
- and
- a second filter configured to be mounted within the ventilation hood, operatively disposed downstream in series with the first filter, wherein the second filter comprises:
- a second filter material, wherein the second filter material is less fire resistant than the first filter material;
- an upstream housing element;
- and
- a downstream housing element;
- wherein the upstream housing element and the downstream housing element cooperate to define a housing for the second filter material, and
- wherein the upstream and downstream housing elements hold the second filter material in compression and allow for a flow through the upstream housing element, then through the filter material, and then through the downstream housing element.
A filter, comprising:
- a filter material comprising a first surface and a second surface;
- a first housing element abutting the first surface of the filter material;
- and
- a second housing element abutting the second surface of the filter material;
- wherein at least one of the first housing element and the second housing element are formed of a perforated sheet,
- wherein the first and second housing elements hold the filter material in compression, and
- wherein perforations of the perforated sheet cover about 60% surface area of the perforated sheet.
Dependencies are inferred from the claim text.