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    • 5. 发明授权
    • Heat-resistant broad-bandwidth liquid droplet generators
    • 耐热宽带液滴发生器
    • US5560543A
    • 1996-10-01
    • US308811
    • 1994-09-19
    • Charles V. SmithJohn W. PriestPatrick N. DuBois
    • Charles V. SmithJohn W. PriestPatrick N. DuBois
    • B05B17/06B22F1/00B22F9/08B23K3/06B05B1/08
    • B23K3/0623B05B17/0607B22F1/0048B22F9/08B22F2009/0836B22F2999/00B41J2202/04H05K2203/013H05K2203/128
    • Apparatus and methods for making uniformly-sized and predictably-spaced droplets from high-temperature liquids. Liquid droplet generators having electromechanical driving elements are coupled to a power supply to apply pulsed excitation forces through a wall of a delivery tube to a high-temperature liquid, e.g., a liquid metal, epoxy, or polymer. The excitation forces generated by the driver induce capillary vibrations in the liquid within the delivery tube. Liquid jet streams having capillary vibrations when exiting an orifice break up into groups of substantially uniformly-sized liquid droplets shortly after leaving the orifice. Droplets may be produced in a uniformly-spaced series, or individually on demand in response to a single burst of force from the driving element. A heat source is also thermally coupled to the delivery tube to maintain the liquid in a high-temperature state. Embodiments using heat-sensitive elements thermally insulate those elements from the wall of the heated delivery tube and may also actively cool the elements by one or more heat exchangers. A magnetohydrodynamic embodiment couples a magnetic field, having spaced points of maximum intensity, to a fluid stream exiting an orifice, causing the stream to break into droplets in response to the periodic magnetic field.
    • 用于从高温液体制造均匀尺寸和可预测间隔的液滴的装置和方法。 具有机电驱动元件的液滴发生器耦合到电源,以将脉冲激励力通过输送管的壁施加到诸如液体金属,环氧树脂或聚合物的高温液体。 由驱动器产生的激励力引起输送管内的液体中的毛细管振动。 离开孔口时具有毛细管振动的液体射流在离开孔口之后不久就分裂成基本均匀尺寸的液滴组。 液滴可以以均匀间隔的系列产生,或者响应于来自驱动元件的单个力的突发而单独地根据需要产生。 热源也热耦合到输送管以将液体保持在高温状态。 使用热敏元件的实施例使这些元件与加热的输送管的壁热绝缘,并且还可以通过一个或多个热交换器主动冷却元件。 磁流体动力学实施例将具有最大强度的间隔点的磁场与离开孔的流体流耦合,导致流响应于周期性磁场而破裂成液滴。