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US 2013/0313104 A1Published application
Air purification system using ultraviolet light emitting diodes and photocatalyst-coated supports
AssigneeHoneywell International Inc.
InventorsSTEPHEN YATES, GREGORY ALLAN LAND
Life of this patent
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Abstract
An air cleaning system may provide effective and evenly distributed removal of organic contaminants from airflow. An ultraviolet light emitting diode (UV LED) source may emit ultraviolet light onto a photocatalyst on a support in airflow where airflow is between the UV LED source and the photocatalyst.
Claims20
An air cleaning system, comprising:
- an ultraviolet light emitting diode (UV-LED);
- a support disposed proximate to the UV LED;
- and
- a photocatalyst on the support disposed to contact airflow passing across or through the support, wherein:
- airflow is between the UV LED and the photocatalyst and,
- the UV LED is positioned to emit ultraviolet light onto the photocatalyst.
3 more elements
An air cleaning system, comprising:
- a chamber;
- an ultraviolet light emitting diode (UV-LED) positioned to emit ultraviolet light into the chamber;
- a plurality of support plates in the chamber spaced parallel to one another, wherein at least one of the plates is disposed proximate the UV LED;
- and
- a photocatalyst on the support plates disposed to contact airflow passing across or between the support plates, wherein the UV LED is positioned to emit ultraviolet light onto the photocatalyst.
2 more elements
A method of purifying airflow, comprising:
- passing the airflow through a reactor including an ultraviolet light reactive photocatalyst;
- emitting ultraviolet light from an ultraviolet light emitting diode into the airflow and onto the photocatalyst;
- and
- removing organic contaminants from the airflow that make contact with the photocatalyst while the ultraviolet light is emitted on the photocatalyst.
1 more element
Dependencies are inferred from the claim text.