The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2009
Filed:
Jan. 31, 2008
Takafumi Seto, Tsukuba, JP;
Makoto Hirasawa, Tsukuba, JP;
Yasufumi Hozumi, Tsukuba, JP;
Masaaki Tsuji, Tsukuba, JP;
Akira Okuyama, Tokyo, JP;
Susumu Saito, Tokyo, JP;
Takafumi Seto, Tsukuba, JP;
Makoto Hirasawa, Tsukuba, JP;
Yasufumi Hozumi, Tsukuba, JP;
Masaaki Tsuji, Tsukuba, JP;
Akira Okuyama, Tokyo, JP;
Susumu Saito, Tokyo, JP;
National Institute of Advanced Industrial Science & Technology, Tokyo, JP;
FISA Corporation, Tokyo, JP;
Abstract
The present invention is relating to an ion generator and an ionizer, in which the ion generator can obtain stable ion generation even if the electrode and the power supply slightly change, satisfies voltage and frequency conditions for realizing an ozone concentration less than 50 ppb as an allowable concentration. The ion generator of the present invention is characterized as a fan-type ion generator including a dielectric body, a discharge electrode having fine protrusions arranged on the surface of this dielectric body, and an induction electrode arranged on the back surface of the dielectric body, comprising: an ion element in which by applying a sinusoidal AC high voltage to the discharge electrode, a potential difference from the induction electrode is generated, plasma is formed on the surface of the dielectric body, and positive ions, negative ions, and ozone are produced according to air ionization; and a fan which generates an airflow with respect to the discharge electrode, wherein the peak-to-peak voltage is not less than 3.5 kV and not more than 7 kV, the frequency f, and the relationship between the voltage V and the frequency f satisfies a specific parameter. And, the ionizer of the present invention is characterized that ionization is performed by using the above mentioned fan-type ion generator.