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Indoor air pollutant destruction apparatus and method using corona discharge
| Details |
Inventors: Wang, John H. S.; Williamson, Weldon S.; Sorbo, Nelson William;
Assignee: Raytheon Company (El Segundo, CA)
Primary Examiner: Gorgos; Kathryn L.
Assistant Examiner: Mayekar; Kishor
Attorney, Agent or Firm: Alkov; Leonard A., Schubert; William C., Lenzen, Jr.; Glenn H.
An indoor air pollutant destruction apparatus destroys pollutants by a corona discharge that is generated by a rapidly oscillating electric field. Free electrons generated by the corona discharge produces ozone (O.sub.3), which effectively destroys volatile organic compounds (VOCs) and biological forms such as bacteria, fungi, viruses and spores. Fine particulate materials such as smoke and dust are charged by the corona discharge, and when they pass through the rapidly oscillating electric field, they coagulate to form larger particles which are then filtered out. |
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DETAILED DESCRIPTION The present invention provides an indoor air treatment apparatus using corona discharge generated by a rapidly oscillating electric field.
In one embodiment, a power source generates a high-voltage pulse-modulated sinusoidal signal to produce a high-intensity rapidly oscillating electric field that induces corona discharges in a reactor.
The power source may be controlled by a computerized controller, which monitors the concentration levels of pollutants in the air from one or more pollutant sensors and directs the power source to generate power with signal characteristics that are desirable for treatment of the pollutants.
The rapidly oscillating electric field in the corona discharge reactor also causes charged particulate materials to coagulate.
The free ions generated by a corona discharge charge particulate materials such as smoke and dust.
When the charged particulate materials pass through a rapidly oscillating electric field, they coagulate to form larger particles, which are filtered out by a conventional dust filter after the air passes through the corona discharge reactor.
An advantage of the present invention is that the same oscillating electric field that is used to generate free ions to charge the particulate materials is also used to coagulate them, thereby requiring only one power source and one set of electrodes.
These and other features and advantages of the invention will be apparent to those skilled in the art from the following detailed description, taken together with the accompanying drawings, in which:
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