Photocatalyst air purification system with ultraviolet light emitting diodes operated with a duty cycle
US9662626B2 · kind B2 · utility
16Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2014 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Nov 19, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air purification system includes a photocatalyst on a support disposed to contact airflow through an airflow channel passing across or through the support; an ultraviolet light emitting diode (UV-LED) disposed to emit ultraviolet light onto the photocatalyst, the UV-LED operated at a less than one hundred percent duty cycle, the duty cycle determined at least in part as a function of a desired minimum volatile organic compound conversion rate of air flowing through the airflow channel and a desired maximum by-product concentration of air flowing through an outlet of the airflow channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.