The Doshisha

Other

Kyoto University

Fukujuen Co., Ltd.

Asahi Roentgen Ind. Co., Ltd.

Yoshiaki Ito

Shinzo Yoshikado

Yoshikazu Nakanishi

Toru Nakamura

Sei Fukushima

Shinji Fukao

Kiyoshi Hayakawa

Jusuke Hidaka

Yuuko Watanabe

Yoshiyuki Shirakawa

A method and apparatus for easily generating ozone with a high concentration in the air without requiring a high voltage power supply or a vacuum apparatus, wherein an ozone gas with a high concentration is generated in the atmosphere around a hemimorphic crystal of which the direction of polarization is uniform by placing the crystal in the air and repeatedly heating and cooling the crystal, are provided.

Method for generating ozone using hemimorphic crystal and apparatus for the same

A classification apparatus including a magnetic stirrer composed of main body () and rotor () and, arranged on the main body of the magnetic stirrer, classification tube (). The interior of the classification tube is provided with classification compartments (A-E) partitioned from each other by divider plates (-). The lowermost classification compartment (A) is furnished with gas emission conduit (). In the classification compartment (A), the rotor () of the magnetic stirrer is arranged. From gas supply source (), a high-pressure gas is fed into the gas emission conduit. By means of the gas emitted from the gas emission conduit, a vortex flow rising from the lowermost classification compartment sequentially toward higher classification compartments is generated in the classification tube. Simultaneously, the rotor of the magnetic stirrer is rotated, so that powdery substance (O) within the classification compartment (A), while being conveyed by the vortex flow, undergoes particle size classification in each of the classification compartments.

Classification apparatus for powdery substance

An X-ray generator uses a high electrical field generated when a hemimorphic crystal is heated or cooled. The crystal may be lithium niobate polarized in one direction. An X-ray target is placed inside a housing inside which a vacuum is maintained. A tungsten line containing thorium is placed between the crystal and the target. When the crystal is heated or cooled by a Pelletier element, an intense electrical field is generated around the crystal. Thermoelectrons released from the tungsten line accelerate as a result of the electrical field and collide with the X-ray target. The X-rays released at this time radiate through a beryllium window exteriorly of the housing. Intense X-rays are generated without using large scale equipment, such as a high voltage power source.

X-ray generator using hemimorphic crystal

An x-ray generator comprising a vesselin which a low pressure gas atmosphere is maintained, hemimorphic crystal supporting meansandprovided in the vessel, at least a pair of hemimorphic crystalsandarranged oppositely at an interval and supported by the hemimorphic crystal supporting means in the vessel, and meanstoandfor elevating and lowering the temperature of the hemimorphic crystals. X-rays are radiated from the vessel as the temperature of the hemimorphic crystals is elevated or lowered.

X-ray generator employing hemimorphic crystal and ozone generator employing it

Growing community of inventors

Kyoto, Japan

Yoshiaki Ito