OZONE GENERATOR AND METHOD OF DIAGNOSING FAILURE OF OZONE GENERATOR

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United States of America Patent

SERIAL NO

14818452

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Abstract

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An ozone generator includes a transformer, a direct current power supply unit connected to a primary side of the transformer, a reactor connected to a secondary side of the transformer, a semiconductor switch connected between one end of a primary winding of the transformer and the direct current power supply unit, and a control circuit for implementing ON-OFF control of the semiconductor switch to thereby apply alternating current voltage to the reactor. The control circuit implements control to minimize electric signal on the primary side of the transformer by updating a switching frequency by a fixed change width from a reference frequency, and determines that a failure has occurred if the number of updates by the fixed change width exceeds a threshold value.

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Patent Owner(s)

Patent OwnerAddress
NGK INSULATORS LTD2-56 SUDA-CHO MIZUHO-KU NAGOYA-SHI AICHI-PREFECTURE 467-8530

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
TAKASE, Naoya Konan-City, JP 31 46
TERAZAWA, Tatsuya Kasugai-City, JP 21 57
YOKOI, Shoji Nagoya-City, JP 22 38

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