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    Heater for gaseous media
    4.
    发明授权
    Heater for gaseous media 有权
    气体介质加热器

    公开(公告)号：US06864467B2

    公开(公告)日：2005-03-08

    申请号：US10702504

    申请日：2003-11-07

    申请人： Jürgen Stritzinger ,  Norbert Kern

    发明人： Jürgen Stritzinger ,  Norbert Kern

    IPC分类号： H05B3/16 ,  H05B3/02

    CPC分类号： H05B3/16 ,  H05B2203/022

    摘要： An electric heater for gaseous media with at least one support plate and at least one helix of corrugated, electric resistance heating wire wound continuously around the support plate and whose turns are held by means of heating wire bend-offs on the longitudinal edges of the support plate is characterized in that the heating wire is positioned in such a way that it only contacts longitudinal narrow sides and/or edges of the longitudinal narrow sides of the support plate, the bending angle being much larger than 40°. This significantly reduces the risk of thermal damage to the heating wire, particularly in the vicinity of the plate edges. As a result of the largely naturally stable design of the heating wire, the heater according to the invention requires no spacers between the support plates and is therefore particularly simple and inexpensive to manufacture.

    摘要翻译： 一种用于气体介质的电加热器，其具有至少一个支撑板和至少一个波纹状电阻加热线的螺旋线，所述电缆缠绕在所述支撑板上连续缠绕，并且其转弯通过在所述支撑件的纵向边缘上的加热线弯曲而保持 其特征在于，所述加热线的定位方式仅使其仅接触所述支撑板的纵向窄边的纵向窄边和/或边缘，所述弯曲角远大于40°。 这显着地降低了对发热丝的热损伤的风险，特别是在板边缘附近。 由于加热线的设计很自然，根据本发明的加热器不需要支撑板之间的间隔件，因此制造特别简单和便宜。

    Method for producing 1-methyl-3-nitroguanidine
    5.
    发明授权
    Method for producing 1-methyl-3-nitroguanidine 有权
    1-甲基-3-硝基胍的制备方法

    公开(公告)号：US06486348B1

    公开(公告)日：2002-11-26

    申请号：US10161619

    申请日：2002-06-05

    申请人： Norbert Kern

    发明人： Norbert Kern

    IPC分类号： C07C27708

    CPC分类号： C07C277/08 ,  C07C279/36

    摘要： The invention relates to a method for producing 1-methyl-3-nitroguanidine. According to said method, nitroguanidine is reacted with methylamine and/or a methylammonium salt in an aqueous solution, at temperatures of 30 to 60° C. and at a pH value of 95 to 12.3. In this way, yields of 1-methyl-3-nitroguanidine of at least 80% and degrees of purity>99% can be obtained in a particularly environmentally friendly and technically simple way.

    摘要翻译： 本发明涉及1-甲基-3-硝基胍的制备方法。 根据所述方法，硝基胍与甲胺和/或甲基铵盐在水溶液中，温度为30至60℃，pH值为95至12.3。 以这种方式，在特别环境友好和技术上简单的方式中可以获得至少80％的1-甲基-3-硝基胍和纯度> 99％的产率。