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    • 6. 发明专利
    • Co2 refrigerator
    • JP4973872B2
    • 2012-07-11
    • JP2007540959
    • 2006-10-16
    • 学校法人同志社株式会社前川製作所
    • ムガビ ネルソン朝郁 吉川博司 山口克己 藤間
    • F25B1/10F25B1/00F25B7/00
    • F25B9/008F25B1/10F25B7/00F25B2309/061F25B2400/02F25B2400/13
    • A CO 2 refrigerator that is safe, permitting simultaneous drawout of high-temperature heat source and low-temperature heat source and low-temperature heat source with a temperature difference therebetween, and that attains stabilization of control thereof, realizing an enhancement of performance coefficient. There is provided a CO 2 refrigerator using CO 2 (carbon dioxide) as a refrigerant and having a refrigerating cycle such that compression to a supercritical zone is followed by decompression via an expansion valve to a pressure/temperature level of CO 2 triple point or below to thereby attain evaporation, which CO 2 refrigerator comprises multistage compressors (3, 4), intermediate cooler (6) disposed on refrigerant flow channel (1) between condenser (5) and expansion means (7), and second refrigerating cycle (2) branched from refrigerant flow channel (1) between the condenser (5) and the intermediate cooler (6), passing via expansion means (9) through the intermediate cooler (6) and connected to refrigerant flow channel (1) between the multistage compressors (3, 4), the second refrigeration cycle (2) constructed so that in the intermediate cooler (6) there is carried out absorption of evaporation latent heat between the same and the refrigerant flow channel (1) to thereby maintain a pressure/temperature level of CO 2 triple point (Ptr) or above even on the rear stream side of the expansion means(9).
    • 9. 发明专利
    • Magnetic coupling
    • JP5270999B2
    • 2013-08-21
    • JP2008199076
    • 2008-07-31
    • 学校法人同志社
    • 博司 山口
    • H02K49/10F16H49/00
    • PROBLEM TO BE SOLVED: To provide a magnetic coupling in simple structure, which reduces coupling loss that arises by a drive shaft and a driven shaft attracting each other by opposite magnets. SOLUTION: In the magnetic coupling, in which first magnet bodies that become mutually attracting polarity are held at magnet holders on a drive shaft and a driven shaft that are provided in opposition across a bulkhead consisting of a nonmagnetic substance, each magnet holder includes a second magnet body, and also at least a part of it is structurized so that the distance to the bulkhead may be larger according as it goes away radially, with the axis on the bulkhead side of the drive shaft or the driven shaft as its apex, thereby making it hold a magnetic viscosity elastic fluid, thus it is so arranged as to generate thrust direction stress in a direction of breaking the drive shaft and the driven shaft away each from the bulkhead by the magnetic force of the magnet holder and the surface tension and the centrifugal force of the magnetic viscosity elastic fluid that rotates accompanying the rotation of the magnet body holder. COPYRIGHT: (C)2010,JPO&INPIT