Kabushiki Kaisha Toshiba

Toshiba Infrastructure Systems & Solutions Corporation

Michiko Hashimoto

Kazuhiko Noda

Takaaki Murata

Kie Kubo

Hiroshi Mochikawa

Yuji Okita

Akihiko Shirota

Kiyoyuki Amemori

Ryutaro Makise

Kanako Nakajima

An ozone generation device includes an inverter, an ozone generator, and a reactor. The inverter turns on and off a switching element by pulse width modulation (PWM) control to convert DC power into AC power. In the ozone generator, voltage of the AC power is applied to a dielectric electrode, and discharge is generated in raw material gas flowing in a discharge gap between the dielectric electrode and a metal electrode, so that ozone is generated by the discharge. The reactor is connected in series to a dielectric electrode, and reduces an inrush current that flows through the dielectric electrode when the switching element is switched from off to on by the PWM control by the inverter.

Ozone generation device and power supply for ozone generation device

According to one embodiment, an ozone generation device includes a first electrode unit, a second electrode unit, a fuse and a fuse holder. The first electrode unit is provided on an inner face of a discharge tube. The second electrode unit is provided outside the discharge tube at an interval. The second electrode faces the first electrode unit. A diameter of the outer face of the fuse is smaller than a diameter of the inner face. At least a part of the outer face is positioned inside the discharge tube. The fuse holder is interposed between the discharge tube and the fuse, includes the outer periphery and an inner periphery and is provided with a first opening and a second opening. The outer periphery extends in an arc along the inner face to come into contact with the inner face. The inner periphery extends in an arc along the outer face to come into contact with the outer face.

Ozone generation device and fuse holder

An ozone generating apparatus according to one embodiment includes a hollow cylindrical sealed container provided with an inlet for a feed gas containing oxygen gas and an outlet for an ozonized gas. A discharge tube including a dielectric tube arranged within the container and a first electrode arranged within the dielectric tube is provided in the container. A second electrode is arranged within the container and surrounds the first electrode, spaced apart from the dielectric tube to form a discharge gap between the second electrode and the dielectric tube. The apparatus further includes a discharge voltage source configured to apply a discharging voltage across the first and second electrodes, and a cooling water jacket surrounding the second electrode. The dielectric tube has an outer diameter of 12 mm or more, but 19 mm or less.

Ozone generating apparatus

Growing community of inventors

Atsugi, Japan

Michiko Hashimoto