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    • 2. 发明授权
    • Method for low frequency attenuation in fluidic amplification of
acoustic signals
    • 声信号流体放大中的低频衰减方法
    • US4957132A
    • 1990-09-18
    • US449206
    • 1989-12-12
    • Nassy Srour
    • Nassy Srour
    • G10K11/04G10K11/08
    • G10K11/04G10K11/08Y10T137/0396Y10T137/2174Y10T137/224
    • A method for attenuation of low frequency acoustic sound in an acoustic dctor comprising the steps of collecting incoming sound waves in the frequency range of DC to 3000 Hz so as to provide an incoming signal S.sub.I, splitting the incoming signal into two signals S.sub.1 and S.sub.2 such that signal S.sub.1 travels through a one acoustic transmission tube a distance of L.sub.1 to the first control port of a fluidic laminar proportional amplifier and signal S.sub.2 travels through a second acoustic transmission tube a distance of L.sub.2 to the second control port of the fluidic laminar proportional amplifier, adjusting the L.sub.1 distance such that the phase of input signal S.sub.1 is shifted in relation to the phase of input signal S.sub.2 when input signals S.sub.1 and S.sub.2 arrive at the control ports of the laminar proportional amplifier.
    • 一种用于在声学检测器中衰减低频声音的方法,包括以下步骤:收集在DC至3000Hz的频率范围内的输入声波,以便提供输入信号SI,将输入信号分成两个信号S1和S2, 该信号S1通过一个声传输管道与L1流体层流比例放大器的第一控制端口的距离L1,并且信号S2穿过第二声传输管道L2到流体层流比例放大器的第二控制端口的距离 调整L1距离,使得当输入信号S1和S2到达层状比例放大器的控制端口时,输入信号S1的相位相对于输入信号S2的相位偏移。
    • 3. 发明授权
    • Liquid oscillator having control passages continuously communicating
with ambient air
    • 液体振荡器具有与环境空气连续连通的控制通道
    • US4227550A
    • 1980-10-14
    • US576713
    • 1975-05-12
    • Peter BauerJulian Lazrus
    • Peter BauerJulian Lazrus
    • B05B1/08F15C1/22F15C1/08
    • B05B1/08B03D1/242F15C1/22Y10T137/2076Y10T137/2234Y10T137/224
    • In a clothes washer, liquid pulses are delivered to a bucket or tank of water to create continuously recirculating flow therein in a vertical plane. The flow carries the clothes in a tumbling action and the pulses agitate the clothes passing the pulse source. Air is introduced into the water pulses and forms air bubbles in the tank which attract dirt particles and carry them to the surface where they are removed as part of a continuous surface overflow. In a preferred embodiment the liquid pulses are delivered by a novel fluidic oscillator of the feedback type in which air is continuously entrained by the power stream from each feedback passage in alternation. In one form, the oscillator utilizes scoop-type feedback passages between respective outlet passages and control ports, each feedback passage communicating with an air passage. Feedback liquid is aspirated by the power stream toward one control port at a relatively low flow rate via the active feedback passage; air is aspirated to the other control port via the inactive feedback passage at a substantially higher flow rate to thereby switch the oscillator power stream away from the latter control port. In a second form of oscillator the feedback passages are of the suction type which are aspirated by the liquid outflow through respective oscillator outlet passages. The air passages are in the form of standpipes extending to above the surface and connected to respective control ports from levels below the surface. The standpipe for the inactive outlet is filled with water to the surface level and blocks air flow to one control port; the standpipe for the active outlet is drained by aspiration through that outlet and unblocks air flow to the other control port. The differential pressure across the control ports, created by the different flow media, causes switching of the oscillator power stream and a reversal of standpipe conditions.
    • 在洗衣机中,液体脉冲被输送到桶或水箱中,以在垂直平面内产生连续的循环流。 流动以滚动的方式携带衣物,脉冲搅动穿过脉冲源的衣服。 空气被引入水脉冲,并在罐中形成吸引污染颗粒的气泡,并将它们携带到被除去的表面,作为连续表面溢流的一部分。 在优选实施例中,液体脉冲由反馈型的新型流体振荡器输送,其中空气被来自每个反馈通道的功率流连续夹带。 在一种形式中,振荡器利用相应出口通道和控制端口之间的铲式反馈通道,每个反馈通道与空气通道连通。 反馈液体通过主动反馈通道以相对较低的流量朝着一个控制端口被动力流吸入; 空气通过非活动反馈通道以相当高的流速被吸入另一个控制端口,从而将振荡器功率流切换离开后一个控制端口。 在第二种形式的振荡器中,反馈通道是抽吸式的,其通过相应的振荡器出口通道被液体流出。 空气通道为立管的形式,其延伸到表面上方并且从表面下方的水平连接到相应的控制端口。 不活动的出口的立管充满水到表面水平,并阻止空气流到一个控制口; 有源插座的立管通过该出口抽吸排出,并阻止空气流向另一个控制口。 由不同的流动介质产生的控制端口两端的差压导致振荡器功率流的切换和立管条件的反转。
    • 5. 发明授权
    • Pure fluid amplifier
    • 纯液体放大器
    • US3785390A
    • 1974-01-15
    • US3785390D
    • 1970-07-27
    • POWERS REGULATOR CO
    • TAYLOR W
    • F15C1/14F15C1/18
    • F15C1/14Y10T137/0391Y10T137/224Y10T137/2262Y10T137/2273
    • A pure fluid amplifier which projects a laminar power stream and includes a control section for developing a pressure differential across the projected laminar power stream for a substantial portion of the length of the power stream (preferably a portion of the length of the power stream at least equal to four times the width of the power stream emission orifice) so as to angularly displace the power stream while maintaining the power stream laminar at all points in advance of the receiver aperture. Preferably, there is a venting region immediately in advance of the receiver aperture which is relieved in all directions in a plane perpendicular to the plane of angular displacement. A system for biasing the laminar deflector (or other pressureoperated pure fluid amplifier) by aspirating fluid from the control section in a quantity substantially equal to the quiescent input flow to the amplifier. A unit ventilator control using a laminar deflector is shown. A proportional controller using a biased laminar deflector is shown.
    • 一种纯流体放大器,其投影层流功率流并且包括控制部分,用于在功率流的长度的大部分(优选地,功率流的长度的一部分至少 等于功率流发射孔的宽度的四倍),以便使功率流成角度地移位,同时在接收器孔径之前的所有点保持功率流层流。 优选地,在紧接着角位移平面的平面中,在接收器孔的前方有一个通气区,该接收孔在所有方向上被释放。 一种用于通过从控制部分抽吸流体到基本上等于静态输入到放大器的流量的量来偏压层流偏转器(或其他压力操作的纯流体放大器)的系统。 示出了使用层流偏转器的单元呼吸机控制。 示出了使用偏置的层流偏转器的比例控制器。
    • 6. 发明授权
    • Fluidic device
    • 流体装置
    • US3721255A
    • 1973-03-20
    • US3721255D
    • 1970-08-20
    • SANYO ELECTRIC CO
    • SUGAYA SSUZUKI FNAITO F
    • F25D11/02F15C1/04F25B5/00
    • F15C1/04Y10T137/2082Y10T137/2196Y10T137/224
    • A fluidic device comprising an inlet passage for receiving a heat vaporizable supply liquid, a main power nozzle connected to the inlet passage, a pair of outlet passages communicated through an interaction chamber with the outlet of the power nozzle and at least one, preferably a pair of by-pass control passages for directing the main stream of liquid through the device to one or the other of the outlet passages. The by-pass control passage communicates the inlet passage directly with the interaction chamber by-passing the power nozzle. It includes heating means for vaporizing the flow of liquid therethrough. A small portion of the main liquid stream through the inlet passage of the device is diverted to the control bypass to be used as control flow. During passage through the control by-pass, the control liquid flow may be vaporized into gas flow by heating means. The vaporization of the control liquid causes a decrease in the mass flow of the control fluid which is effective to produce a transverse pressure differential across the main liquid stream through the interaction chamber sufficient to bias it for flow through the desired one of the two outlet passages. A refrigeration system includes a pair of evaporators, means for supplying a liquid refrigerant to the evaporators and a fluidic device of the type described. The fluidic device is provided between refrigerant supplying means and a pair of evaporators with its inlet passage connected to refrigerant supplying means for receiving the refrigerant and each of its two outlet passages connected to respective one of the evaporators. Heating means on the control by-passes are adapted to be operated in response to predetermined temperature conditions within the spaces where the evaporators are disposed so as to bias the flow of refrigerant through the fluidic device to one or the other of its outlet passages for supply into corresponding one of the evaporators.
    • 一种流体装置,包括用于接收可热蒸发的供应液体的入口通道,连接到入口通道的主动力喷嘴,通过相互作用室与动力喷嘴的出口连通的一对出口通道,以及至少一个,优选地一对 的旁路控制通道,用于将主流体通过该装置引导到一个或另一个出口通道。 旁路控制通道将入口通道直接与相互作用室连通,通过动力喷嘴。