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    • 6. 发明授权
    • Rotary compressor
    • 旋转压缩机
    • US4711617A
    • 1987-12-08
    • US38166
    • 1987-04-14
    • Kazutomo AsamiFumiaki SanoFumio WadaKoji Ishijima
    • Kazutomo AsamiFumiaki SanoFumio WadaKoji Ishijima
    • F04C28/24F04C28/28F25B31/02F25B41/04F04B49/00
    • F04C28/24F04C28/28F25B31/026F25B41/04
    • In a rotary compressor for compressing a refrigerant gas by a compressor element adapted to be rotated by an electric motor, the improvement comprises a cylindrical member provided inside or outside the closed container and communicated with the first intake passage and with the first discharge passage; a second intake passage communicated with the cylindrical member and with the compressor element; a second discharge passage communicated with the cylindrical member and within the closed container; a first communication passage for communicating the second intake passage with one end of the cylindrical member; a second communication passage for communicating the closed container with the other end of the cylindrical member; and a valve member provided in the cylindrical member; and a spring which urges the end of the valve near the first communication passage; the valve member being moved to a first position to communicate the first intake pasage with the second intake passage and also communicate the first discharge passage with the second discharge passage when one end of the valve member is urged by a discharge pressure of the refrigerant gas, through the second communication passage while the valve member being moved to a second position to make the first intake passage out of communication with the second intake passage and also make the first discharge passage out of communication with the second discharge passage when the other end of the valve member is urged by a reverse currernt pressure of the refrigerant gas from the first communication passage and a spring pressure.
    • 在用于通过电动机旋转的压缩机元件压缩制冷剂气体的旋转压缩机中,改进包括设置在密闭容器的内部或外部并与第一进气通道和第一排出通道连通的圆柱形构件; 与圆柱形构件和压缩机元件连通的第二进气通道; 第二排出通道与所述圆筒形构件连通并在所述密闭容器内; 第一连通通道,用于将第二进气通道与圆柱形构件的一端连通; 用于使所述封闭容器与所述圆筒形构件的另一端连通的第二连通通道; 以及设置在所述圆筒形构件中的阀构件; 以及在第一连通通道附近推动阀的端部的弹簧; 阀构件被移动到第一位置以将第一进气通道与第二进气通道连通,并且当阀构件的一端被制冷剂气体的排出压力推动时,第一排出通道与第二排出通道连通, 通过第二连通通道,同时阀构件移动到第二位置以使第一进气通道与第二进气通道断开连通,并且当第一进气通道的另一端与第二排气通道的另一端 阀构件被来自第一连通通道的制冷剂气体的反向压力和弹簧压力推动。
    • 9. 发明授权
    • Temperature distribution analyzer using optical fiber
    • 使用光纤的温度分布分析仪
    • US5217306A
    • 1993-06-08
    • US810518
    • 1991-12-19
    • Fumio Wada
    • Fumio Wada
    • G01K11/12G01D5/353G01K11/32
    • G01K11/32
    • A temperature distribution analyzer is disclosed. In the analyzer, a measuring optical fiber is provided so as to extend through a target region in order to analyze the temperature distribution of the region. A LD pumped solid state laser generates pulse light having high energy and supplies the pulse light to one of the terminal portions of an optical fiber. This causes a stimulated-Raman-scattering phenomenon in the optical fiber whereby Raman-scattered light is obtained from the other terminal portion of the excitation optical fiber. An optical filter selects light having a predetermined wavelength from the Raman-scattered light and outputs the selected light. An optical device introduces the output light of the optical filter to one of the terminal portions of the measuring optical fiber and receives Raman-backscattered light generated in the measuring optical fiber through the same terminal portion. A photodetector converts the Raman-backscattered light to an electrical signal. A computing device determines temperatures of portions of the measuring optical fiber based on the variation over time of the electrical signal.