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    • 33. 发明授权
    • Tube for use in a heat exchanger
    • 管用于热交换器
    • US5682946A
    • 1997-11-04
    • US617466
    • 1996-03-18
    • Martin SchmidtUlrich Naumann
    • Martin SchmidtUlrich Naumann
    • F28F1/40
    • F28F1/40Y10S165/515
    • A heat exchanger tube having a smooth outer surface and a textured inner surface. The inner surface is composed of parallel ribs which run at an angle deviating from 90.degree. relative to the longitudinal axis of the exchanger tube. The ribs further have inclined flanks, channels delimited on the sides by the ribs, and depressions formed in the ribs, which may run crosswise at a distance from the bottom of the channels. The depressions are formed so as to follow a sine-shaped progression, in longitudinal cross-section of the ribs, which are provided with a surface micro-roughness and which are rounded on the top. The center longitudinal planes of the depressions are arranged at an angle deviating from 90.degree. relative to the longitudinal axis of the exchanger tube. The opposite flanks of adjacent ribs are connected by means of rounded channel bottoms. The micro-roughness of the rib surfaces is produced by corundum blasting or laser beams.
    • 一种具有光滑外表面和纹理内表面的热交换器管。 内表面由平行的肋条构成,它们以相对于交换器管的纵向轴线偏离90°的角度运行。 肋条还具有倾斜的侧面,通过肋限定在侧面的通道,以及形成在肋中的凹陷,其可以在与通道的底部一定距离处横向延伸。 凹陷形成为沿着肋的纵向横截面的正弦状进展,其具有表面微粗糙度并且在顶部上是圆形的。 凹陷的中心纵向平面布置成相对于交换器管的纵向轴线偏离90°的角度。 相邻肋的相对侧面通过圆形通道底部连接。 肋表面的微观粗糙度由刚玉爆破或激光束产生。
    • 34. 发明授权
    • Method and apparatus for manufacturing coils
    • 制造线圈的方法和装置
    • US5090112A
    • 1992-02-25
    • US576387
    • 1990-09-14
    • Gunther BenschMarkus SchneiderBert WalchMartin Schmidt
    • Gunther BenschMarkus SchneiderBert WalchMartin Schmidt
    • H01F41/06H01F41/04
    • H01F41/04Y10T29/49004Y10T29/49071Y10T29/49096
    • A method and apparatus for manufacturing coils made of resistance wire, wherein the coil's electrical resistance can be preselected despite variations in the resistance of the wire being used, or changes in the ambient temperature of the wire during manufacturing. The wire is supplied to a winding device through an electrically controlled wire braking element which has an electrically adjustable braking force. The resistance of at least one coil wire section is measured; the measuring signal is supplied to an evaluating configuration, wherein the actual measured resistance value is compared to a preselected desired value; and a signal is transmitted to the braking element to decrease the braking action when the measured resistance value exceeds the desired resistance value, and a signal is transmitted to the braking element to increase the braking action when the desired value is undershot.
    • PCT No.PCT / DE89 / 00111 Sec。 371 1990年9月14日第 102(e)1990年9月14日PCT PCT。 出版物WO89 / 11155 日本特开1989年11月16日。一种用于制造由电阻丝制成的线圈的方法和装置,其中线圈的电阻可以预先选择,尽管在使用的线的电阻的变化或线的环境温度在制造过程中的变化。 电线通过具有可电动调节的制动力的电控制线制动元件提供给绕组装置。 测量至少一个线圈线段的电阻; 将测量信号提供给评估配置,其中将实际测量的电阻值与预选的期望值进行比较; 并且当测量的电阻值超过期望的电阻值时,信号被传送到制动元件以减小制动动作,并且当所需值低于该值时,信号被传递到制动元件以增加制动动作。