Piezoelectric transformer type ionizer and neutralization method
US7821762B2 · kind B2 · utility
21Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2008 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Apr 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/2481
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
With a piezoelectric transformer formed of a ferroelectric element which generates a high voltage in a secondary section upon application of an AC voltage to a primary section, ground electrodes are attached to upper and lower surfaces of the secondary section of the piezoelectric transformer via a dielectric sheet for insulation in tight contact therewith such that a dielectric barrier discharge occurs around the ground electrodes to generate positive and negative ions, and an air flow is injected from an air nozzle to flow toward a neutralized subject across the ground electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.