Refrigerating apparatus and inverter device
    2.
    发明申请
    Refrigerating apparatus and inverter device 审中-公开
    制冷装置及逆变装置

    公开(公告)号:US20050204760A1

    公开(公告)日:2005-09-22

    申请号:US11001036

    申请日:2004-12-02

    摘要: A refrigerating apparatus having a refrigerating cycle that comprises a compressor, an electric motor that drives the compressor, and an inverter device that variably controls the operating frequency of the electric motor. The inverter device includes a converter circuit that converts an A.C. voltage from an A.C. power supply into a D.C. current, an inverter circuit comprising a D.C./A.C converter, and a shunt resistance that detects a D.C. current flowing through a switching element of the inverter circuit. The shunt resistance detects a D.C. current, and the detected D.C. current value is calculated as a sine wave A.C. current for the electric motor in relation to action of the switching element.

    摘要翻译: 具有包括压缩机,驱动压缩机的电动机和可变地控制电动机的工作频率的逆变器装置的制冷循环的制冷装置。 逆变器装置包括:转换电路,其将来自交流电源的交流电压转换为直流电;逆变器电路,包括直流/交流转换器;以及分流电阻,其检测流过逆变器电路的开关元件的直流电流 。 分流电阻检测直流电流,并且检测到的直流电流值被计算为电动机相对于开关元件的作用的正弦波A.C.电流。

    Production process of machinable ceramics
    3.
    发明授权
    Production process of machinable ceramics 失效
    可加工陶瓷的生产工艺

    公开(公告)号:US5026412A

    公开(公告)日:1991-06-25

    申请号:US588724

    申请日:1990-09-27

    摘要: Machinable ceramics with 30-60 vol. % of fine crystals of fluorophlogopite, a synthetic mica, evenly dispersed in a vitreous matrix is produced using as principal raw materials kaolin and activated clay, which are natural minerals, other than metal oxides themselves. According to the production process, a mixture of fine particulate raw materials is calcined under first heat treatment conditions in which a maximum temperature is in the range of 1,000.degree.-1,100.degree. C. The raw materials include kaolin and activated clay as principal raw materials, Mg-containing, K-containing and F-containing compounds as auxiliary raw materials and B.sub.2 O.sub.3 as a sintering aid. The resulting calcined mass is ground into fine particles, followed by the formation of a green body of a desired shape. The green body is then sintered into a fired body under second heat treatment conditions in which a maximum temperature is in the range of 1,100.degree.-1,250.degree. C.

    摘要翻译: 30-60体积的可加工陶瓷 以金属氧化物本身以外的天然矿物质作为主要原料高岭土和活性白土作为主要原料,生产均匀分散在玻璃质基质中的合成云母的氟金云母微晶的百分比。 根据制造方法,在最高温度为1000〜-1100℃的第一热处理条件下煅烧细粒状原料的混合物。原料包括高岭土和活性粘土作为主要原料, 作为辅助原料的含Mg,K和F的化合物和作为烧结助剂的B 2 O 3。 将所得的煅烧物料研磨成细颗粒,然后形成所需形状的生坯。 然后在第二热处理条件下将生坯烧结成烧制体,其中最高温度在1100℃-150℃的范围内。