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US 8,252,099 B2Granted
Air filtration device
AssigneeLifeAire Systems, LLC
InventorKathryn C. Worrilow
Life of this patent
Estimating the term…
Abstract
An air purifier has a housing with an inlet for receiving air and an outlet for exhausting air. The housing provides an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet. Particulate pre-filtration is located within the housing downstream from the air inlet. VOC pre-filtration is located within the housing downstream from the particulate pre-filtration. UV filtration is located within the housing downstream from the VOC pre-filtration. VOC post-filtration is located within the housing downstream from the UV filtration. Final particulate filtration is located within the housing downstream from the VOC post-filtration.
Claims16
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration comprising one or more pleated particulate pre-filters within the housing downstream from the air inlet, the pleated particulate pre-filter(s) having a MERV of 7 to 8, with an Average ASHRAE Dust Spot Efficiency (Standard 52.1) of 30% to 45%;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration, the VOC pre-filtration comprising carbon and KMnO4;
- d. particulate post-filtration comprising one or more pleated particulatepost-filters within the housing downstream from the VOC pre-filtration, the pleated particulate post-filter(s) having a MERV of 7 to 8, with an Average ASHRAE Dust Spot Efficiency (Standard 52.1) of 30% to 45%;
- e. UV filtration within the housing downstream from the VOC pre-filtration, the UV filtration comprising a plurality of lamps extending longitudinally through the housing, the lamps adapted to generate UVC radiation having a wavelength in a range of about 220 nm to about 288 nm;
- f. VOC post-filtration within the housing downstream from the UV filtration, the VOC post-filtration comprising carbon and KMnO4;
- and
- g. final particulate filtration within the housing downstream from the VOC post-filtration, the final particulate filtration comprising one or more filters having a MERV of 16 or greater with an average ASHRAE Dust Spot Efficiency (Std. 52.1) of 95% or greater.
5 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- d. particulate post-filtration within the housing, downstream from the VOC pre-filtration;
- e. UV filtration within the housing downstream from the particulate post-filtration;
- f. VOC post-filtration within the housing downstream from the UV filtration;
- and
- g. final particulate filtration within the housing downstream from the VOC post-filtration.
5 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet, wherein the particulate pre-filtration includes one or more filters having a MERV of 7 to 8, with an Average ASHRAE Dust Spot Efficiency (Standard 52.1) of 30% to 45%;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- d. UV filtration within the housing downstream from the VOC pre-filtration;
- e. VOC post-filtration within the housing downstream from the UV filtration;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration, the VOC pre-filtration comprising carbon and KMnO4;
- d. UV filtration within the housing downstream from the VOC pre-filtration;
- e. VOC post-filtration within the housing downstream from the UV filtration, the VOC post-filtration comprising carbon and KMnO4;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the air purifier further comprising a substantially enclosed space adapted to receive purified air from the outlet, wherein the substantially enclosed space has a sensor for detecting VOC levels therein, the sensor being adapted to transmit a signal representative of the VOC levels to a monitor, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- d. UV filtration within the housing downstream from the VOC pre-filtration;
- e. VOC post-filtration within the housing downstream from the UV filtration;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- UV filtration within the housing downstream from the VOC pre-filtration, wherein at least a portion of the interior of the housing encasing the UV filtration has a coefficient of reflection of at least 60%;
- e. VOC post-filtration within the housing downstream from the UV filtration;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- d. UV filtration within the housing downstream from the VOC pre-filtration, wherein the UV filtration comprises a UVC source adapted to generate radiation having a wavelength in a range of about 220 nm to about 288 nm, the UV filtration being capable of providing a total UVC output ranging from about 33,464 μJ/cm2 to about 90,165 μJ/cm2;
- e. VOC post-filtration within the housing downstream from the UV filtration;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- d. UV filtration within the housing downstream from the VOC pre-filtration, wherein the UV filtration comprises a UVC source adapted to generate radiation having a wavelength in a range of about 220 nm to about 288 nm, wherein the UV filtration comprises a plurality of lamps extending longitudinally through the housing;
- e. VOC post-filtration within the housing downstream from the UV filtration;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- d. UV filtration within the housing downstream from the VOC pre-filtration, wherein the UV filtration comprises a UVC source adapted to generate radiation having a wavelength in a range of about 220 nm to about 288 nm, the UV filtration further comprising a vacuum UV source upstream from the UVC source, the vacuum UV source adapted to generate radiation having a wavelength of about 170 nm to about 220 nm;
- e. VOC post-filtration within the housing downstream from the UV filtration;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
An air purifier comprising:
- a. a housing having an inlet for receiving air and an outlet for exhausting air, the housing providing an air flow path for the flow of air in a downstream direction, from the inlet towards the outlet;
- b. particulate pre-filtration within the housing downstream from the air inlet, there being a cooling coil within the housing upstream from the particulate pre-filtration, wherein a UVC source is located adjacent to the cooling coil;
- c. VOC pre-filtration within the housing downstream from the particulate pre-filtration;
- d. UV filtration within the housing downstream from the VOC pre-filtration;
- e. VOC post-filtration within the housing downstream from the UV filtration;
- and
- f. final particulate filtration within the housing downstream from the VOC post-filtration.
4 more elements
Dependencies are inferred from the claim text.