Mitsubishi Denki Kabushiki Kaisha

Takanori Ueno

Norikazu Tabata

Keisuke Namba

Shigenori Yagi

Masaaki Tanaka

Shuji Ogawa

An ozonized oxygen fed from an ozonizer is passed to a reaction tower to treat an object material. In recovering non-reacted oxygen from the reaction tower to reuse in the ozonizer, zeolite is used as an adsorbent to remove impurities contained in the recovered oxygen, such as water, volatile organic materials and CO.sub.2 gas so that a raw material oxygen without containing any impurity is fed to the ozonizer to increase the ozonizing efficiency.

Oxygen recycle type ozonizing apparatus

A silent discharge gas laser apparatus has three or more electrodes arranged in axial symmetry with the laser radiation axis and supplied with voltage from a multi-phase high frequency power source to establish a continuous discharge and a higher discharge density at reduced frequencies, particularly in the central region of the discharge zone.

Multi-phase silent discharge gas laser apparatus

An ozonizer comprising a pair of electrodes including a grounding electrode and a high voltage electrode, a dielectric substrate disposed between the grounding electrode and the high voltage electrode, a perforated metal substrate disposed in a gap space between the grounding electrode and the dielectric substrate, wherein the perforated metal substrate comprises first spacing means interspaced between the perforated metal substrate and the dielectric substrate for maintaining a constant separation gap therebetween, second spacing means disposed between the perforated metal substrate and the grounding electrode to maintain the perforated metal substrate in position between the dielectric substrate and the grounding electrode, wherein a uniform separation distance promoting a uniform silent discharge is maintained between the perforated metal substrate and the dielectric substrate by the first and second spacing means.

Ozonizer

An ozone-generating apparatus comprises an ozonizer; one or more moisture exchangers in which synthetic zeolite having fine pore diameter for inhibiting adsorption of ozone but easily adsorbing moisture, is filled as a moisture adsorbent; and switching means which switches the moisture exchangers at the inlets and the outlets thereof to alternatively repeat a moisture-adsorbing operation for drying air by passing a wet air through one of the moisture exchanger before feeding it to the ozonizer and a moisture adsorbent-recovering operation for drying the synthetic zeolite by passing the dry ozone-containing air generated from the ozonizer through the other moisture exchanger.

Ozone-generating apparatus

A moisture exchanger type ozone-generating apparatus comprises one or more pairs of adsorption towers which alternatively repeat a step of adsorption and a step of desorption by passing a dry ozone-containing air, and at least one additional adsorption tower for imparting a step of partial desorption between the step of adsorption and the step of desorption, whereby the decrease of ozone concentration at the switching from the step of adsorption to the step of desorption is reduced.

Moisture exchanger type ozone-generating apparatus

An ozone generating apparatus is disclosed which is quite compact and has a high yield of ozone and which prevents an abnormal rise of temperature in a discharge gap by recycling a liquid coolant having low electric conductivity through an inner part of a high voltage electrode tube of a silent discharge ozonizer to cool the electrode tube.

Growing community of inventors

Amagasaki, Japan

Takanori Ueno