Constant current electrical circuit for driving piezoelectric transducer
    11.
    发明授权
    Constant current electrical circuit for driving piezoelectric transducer 失效
    用于驱动压电换能器的恒流电路

    公开(公告)号:US4256987A

    公开(公告)日:1981-03-17

    申请号:US32875

    申请日:1979-04-24

    CPC classification number: B06B1/0253 B06B2201/55 B06B2201/77

    Abstract: An electrical circuit for driving a piezoelectric transducer includes a DC electric source, a constant current circuit, connected to the DC electric source for processing a DC signal from the DC electric source and supplying a constant output current having a predetermined constant value, and an oscillation circuit connected to the constant current circuit for driving the piezoelectric transducer with a resonance frequency and with a constant current. The electrical circuit approximately drives the piezoelectric transducer with a constant current by supplying the constant current to the oscillation circuit.

    Abstract translation: 用于驱动压电换能器的电路包括直流电源,恒流电路,连接到直流电源,用于处理来自直流电源的直流信号,并提供具有预定常数值的恒定输出电流和振荡 连接到用于以谐振频率和恒定电流驱动压电换能器的恒流电路。 通过向振荡电路提供恒定电流,电路大致以恒定电流驱动压电换能器。

    Hand held ultrasonic nebulizer
    12.
    发明授权
    Hand held ultrasonic nebulizer 失效
    手持超声波雾化器

    公开(公告)号:US4113809A

    公开(公告)日:1978-09-12

    申请号:US784044

    申请日:1977-04-04

    Abstract: An improved ultrasonic nebulizer for administering a medicament aerosol to a patient. Output from an oscillator is connected through a series inductor to a transducer adjacent a reservoir which generates aerosol from the medicament. The inductor is tuned for series resonance with the bulk capacitance of the transducer. An impedance change in the transducer when liquid is removed or consumed from the reservoir reduces the power delivered to the transducer and prevents transducer damage.

    Abstract translation: 一种用于向患者施用药物气溶胶的改进的超声雾化器。 来自振荡器的输出通过串联电感器连接到与从药物产生气溶胶的储存器相邻的换能器。 电感器被调谐以与传感器的体电容串联谐振。 当液体从储存器中取出或消耗时,换能器中的阻抗变化会降低输送到换能器的功率,并防止换能器损坏。

    Sonotrode for processing of liquid metals and a method for processing of liquid metals

    公开(公告)号:US11938557B2

    公开(公告)日:2024-03-26

    申请号:US17609941

    申请日:2020-05-12

    Inventor: Lukasz Zrodowski

    CPC classification number: B23K20/106 B06B3/00 B23K20/26 B23K37/003 B06B2201/77

    Abstract: An ultrasound sonotrode (101), the first end of which is adapted to be connected to a mechanical vibrations source, equipped with a working tip (105,205,405,805) at the opposite end of the sonotrode (101), equipped with a body (104) with a cooling jacket (103), sealed at the place of contact with the body (104) of the sonotrode (101) with the use of the first seal (106) and the second seal (107), characterized in that according to the invention the first seal (106) is placed at a distance less than or equal to 20 mm from the node of the standing wave excited in the sonotrode in the working conditions, and the second seal (107,207,407,507,607) is equipped with a resilient element (108,208,408,508,608) and is located at a distance less than or equal to 20 mm from the working tip (105,205,405,805). A method for metal alloying, in which the material is melted on the working tip (105, 205, 405, 805) of the sonotrode excited to mechanical vibrations, according to the invention characterized in that a sonotrode according to the invention is used.

    Generator for exciting piezoelectric transducer
    17.
    发明授权
    Generator for exciting piezoelectric transducer 失效
    励磁压电传感器发电机

    公开(公告)号:US07960894B2

    公开(公告)日:2011-06-14

    申请号:US11822662

    申请日:2007-07-09

    Applicant: Nicolas Duru

    Inventor: Nicolas Duru

    CPC classification number: B05B17/0646 B06B1/0261 B06B2201/77

    Abstract: A generator for exciting a piezoelectric transducer, includes at least one digital processor unit. The digital processor unit is configured to operate at least in an iterative operation stage including more than two successive iterations. Each iteration includes: exciting the transducer at a plurality of frequencies in a frequency band about a set-point frequency; during transducer excitation, acquiring one or more values related to at least one electrical magnitude associated with the excitation of the transducer for a plurality of frequencies in the frequency band; and analyzing the values acquired to determine a new set-point frequency for a subsequent iteration.

    Abstract translation: 用于激发压电换能器的发生器包括至少一个数字处理器单元。 数字处理器单元被配置为至少在包括多于两个连续迭代的迭代操作阶段中操作。 每个迭代包括:在围绕设定点频率的频带中以多个频率激励换能器; 在换能器激励期间,获取与所述频带中的多个频率的与所述换能器的激励相关联的至少一个电幅度相关的一个或多个值; 并且分析所获取的值以确定用于后续迭代的新的设定点频率。

    Process for coating three-dimensional substrates with thin organic films and products
    18.
    发明申请
    Process for coating three-dimensional substrates with thin organic films and products 有权
    用薄的有机薄膜和产品涂覆三维底材的方法

    公开(公告)号:US20050158448A1

    公开(公告)日:2005-07-21

    申请号:US10927782

    申请日:2004-08-27

    Abstract: The present invention relates to an apparatus and process for producing a thin organic film on a substrate using an ultrasonic nozzle to produce a cloud of micro-droplets in a vacuum chamber. The micro-droplets move turbulently within the vacuum chamber, isotropically impacting and adhering to the surface of the substrate. The resulting product has a smooth, continuous, conformal, and uniform organic thin film, when the critical process parameters of micro-droplet size, shot size, vacuum chamber pressure, and timing are well-controlled, and defects such as “orange peel” effect and webbing are avoided. The apparatus includes an improved ultrasonic nozzle assembly that comprises vacuum sealing and a separate, independent passageway for introducing a directed purging gas.

    Abstract translation: 本发明涉及使用超声波喷嘴在基板上制造薄有机膜以在真空室中产生微滴的云的装置和方法。 微滴在真空室内湍动地移动,各向同性地冲击并粘附到基底表面。 当微滴尺寸,注射尺寸,真空室压力和时间的关键工艺参数被良好控制时,所得产品具有光滑,连续,保形和均匀的有机薄膜,以及诸如“橙皮” 避免了效果和织带。 该设备包括改进的超声波喷嘴组件,其包括真空密封和用于引入定向吹扫气体的独立的独立通道。

    Method and apparatus for detecting the onset of flooding of an
ultrasonic atomizer
    19.
    发明授权
    Method and apparatus for detecting the onset of flooding of an ultrasonic atomizer 失效
    用于检测超声雾化器淹水开始的方法和装置

    公开(公告)号:US5588592A

    公开(公告)日:1996-12-31

    申请号:US421685

    申请日:1995-04-13

    Inventor: Robert F. Wilson

    CPC classification number: B06B1/0253 B05B17/0607 B06B2201/40 B06B2201/77

    Abstract: Deleting the onset of flooding of a surface of an ultrasonic atomizer having an ultrasonic transducer with liquid to be atomized, in particular liquid fuel in connection with heaters, wherein the natural resonance frequency of the vibrating ultrasonic transducer is monitored for changes in frequency, and a flooding signal reporting a flooded condition is produced when a drop in resonance frequency over a previously detected resonance frequency is detected whose rate of decrease exceeds a set minimum threshold.

    Abstract translation: 用具有超声波换能器的超声波换能器表面溢流开始,该液体要被雾化,特别是与加热器有关的液体燃料,其中监测振动超声波换能器的固有共振频率以改变频率, 当检测到超过先前检测到的共振频率的共振频率降低超过设定的最小阈值时,会产生报告溢流状态的溢流信号。

    Method and circuit for exciting an ultrasonic generator and the use
thereof for atomizing a liquid
    20.
    发明授权
    Method and circuit for exciting an ultrasonic generator and the use thereof for atomizing a liquid 失效
    用于激发超声波发生器的方法和电路及其用于雾化液体的用途

    公开(公告)号:US4868521A

    公开(公告)日:1989-09-19

    申请号:US232731

    申请日:1988-08-16

    Applicant: Manfred Konrad

    Inventor: Manfred Konrad

    CPC classification number: B05B17/0669 B05B17/0607 B06B1/0253 B06B2201/77

    Abstract: A method and a circuit for exciting an ultrasonic generator comprises a control loop which includes the ultrasonic generator itself and a voltage-controlled oscillator. The control loop keeps the active power consumption to a desired value, which is compared in a comparator with the instantaneous active power consumption. One output of a further rectangular oscillator is connected to the control input of the voltage-controlled oscillator. The rectangular oscillator is put into operation if in the control loop there are no control oscillations or only those which are smaller than a predetermined threshold. The output of the rectangular oscillator is connected across one diode to the control input of the voltage-controlled oscillator and across another diode to the controlled input of comparator. The additional signal is applied to the voltage-controlled oscillator, apart from the control signal of the control loop. The cycle of the additional signal is longer than the change time constant at the control input of the voltage-controlled oscillator and the additional signal swing is selected in such a way that the frequency of oscillator passes through a predetermined frequency range.

    Abstract translation: 用于激发超声波发生器的方法和电路包括包括超声波发生器本身和压控振荡器的控制回路。 控制回路将有功功率保持在期望值,在比较器中与瞬时有功功率消耗进行比较。 另一个矩形振荡器的一个输出端连接到压控振荡器的控制输入端。 如果在控制环路中没有控制振荡或只有小于预定阈值的振荡器,则矩形振荡器投入运行。 矩形振荡器的输出通过一个二极管连接到压控振荡器的控制输入端,另一个二极管连接到比较器的受控输入端。 除了控制回路的控制信号之外,附加信号被施加到压控振荡器。 附加信号的周期比压控振荡器的控制输入处的变化时间常数长,并且以使得振荡器的频率经过预定频率范围的方式选择附加信号摆幅。

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