Multistage traveling wave fluid driving device and control method thereof

Abstract

The invention provides a multistage traveling wave fluid driving device and a control method thereof, and belongs to the technical field of fluid directional driving. The fluid driving device comprises a cavity, a piezoelectric vibrator, a middleware and an adapter, the cavity is provided with a plurality of nozzle structures used for fluid to enter and exit, and the piezoelectric vibrator is fixedly installed on the cavity through sealant. The multiple cavities are connected in series through the spray head structures and the middleware to form the multi-stage fluid driving device. The fluid driving device can also be assembled into a planar or three-dimensional array with a plurality of nozzle structures through adapters, and under the control of different excitation signals, the fluid can be directionally driven in multiple directions. The fluid driving device is high in modularization degree, easy to manufacture, low in cost, flexible to control and environmentally friendly, and has multiple purposes of liquid directional transportation, heat dissipation, drivers and the like.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fluid directional driving, and in particular relates to a multi-stage quasi-traveling wave fluid driving device and a control method thereof. BACKGROUND

[0002] In recent years, fluid directional driving has been intensively studied and widely applied in the fields of drivers, electronic heat dissipation, material preparation, and microfluid transport, etc., and has broad application scenarios. The core is to use physical field (such as electric field, magnetic field, pressure field), geometric structure design or surface property regulation to accurately control the movement of fluid (especially microscale fluid). Among them, the technology driven by pressure field has simple and direct driving mechanism, high linear degree of flow control, strong anti-interference ability, and low application cost. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a multi-stage quasi-traveling wave fluid driving device and a control method thereof, which solves the problem of inconvenient installation and maintenance of the existing piezoelectric printing head and printer fixed connection, and improves the printing efficiency.

[0004] The present application is realized by the following technical scheme: A multi-stage quasi-traveling wave fluid driving device: The multi-stage quasi-traveling wave fluid driving device comprises a cavity, a piezoelectric vibrator, an intermediate piece and an adapter; The cavity has a plurality of nozzle structures for the entry and exit of the transported fluid, and the edge part of the piezoelectric vibrator is fixedly installed in the boss of the outer wall of the cavity by sealing glue, and the upper end and the lower end of the cavity can install the piezoelectric vibrator; A plurality of cavities can be connected in series by the intermediate piece to form a multi-stage fluid driving device; the multi-stage fluid driving device can also be assembled into a planar or three-dimensional array with multiple nozzle structures through the adapter.

[0005] Further, the shape of the cavity outer wall, inner cavity and nozzle structure is a cylinder, a cube or a sphere, The piezoelectric vibrator is circular, square or triangular, The shape of the intermediate piece and the adapter is a cylinder, a circular truncated cone or a square.

[0006] Further, the number of cavities and piezoelectric vibrators is N, N is an odd number greater than or equal to three; The number of cavity nozzle structures of the multi-stage quasi-traveling wave fluid driving device is S, S is an integer greater than or equal to two; The number of intermediate pieces is M, M is an integer greater than or equal to one; the number of adapters is T, T is an integer greater than or equal to one.

[0007] Further, the intermediate piece is a flexible or rigid pipe, which can be integrally manufactured with the cavity or integrally bonded with the nozzle structure of the cavity.

[0008] Further, the material of the cavity has a preset strength and hardness to maintain the stability of the cavity structure. The piezoelectric vibrator is a regular-shaped piezoelectric element; the surface of the piezoelectric vibrator and the connection of the wire are insulated. The material of the adapter is a flexible material or a rigid material, wherein the flexible material can adapt to the adjustment of the assembly angle, and the rigid material can maintain a fixed connection form.

[0009] Further, the multi-stage fluid driving device has a linear shape, a curved shape or a cross shape. The multi-stage fluid driving device can be assembled into a planar linear shape, a planar cross shape or a three-dimensional cross shape through the adapter, and has a plurality of nozzle structures that can be used as fluid inlets and outlets.

[0010] Further, the fluid driven by the multi-stage fluid driving device is air, water or other fluids. The multi-stage fluid driving device can perform directional fluid directional driving to generate a specific direction jet or different direction sweeping jet on a local area.

[0011] A control method of a multi-stage row wave-like fluid driving device: The excitation signals are applied to the plurality of piezoelectric vibrators, the vibration of the piezoelectric vibrators is controlled by adjusting the voltage, frequency, duty cycle and waveform of the excitation signals, and the excitation signals of adjacent piezoelectric vibrators have a phase difference of 90°, so as to realize row wave-like control of the fluid driving speed and driving direction of the multi-stage fluid driving device.

[0012] An electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize the steps of the above method.

[0013] A computer readable storage medium for storing computer instructions, wherein the computer instructions are executed by a processor to realize the steps of the above method.

[0014] Advantages of the present application Compared with the prior art, the present application has the advantages that the present application solves the problem of inconvenient installation and maintenance of the piezoelectric printing head after being fixedly connected with the printer, and improves the printing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Figure 1 is a structural schematic diagram of a multistage class traveling wave fluid driving device of the present application. Figure 2 Figure 2 is a structural schematic diagram of a cavity and a piezoelectric vibrator of the present application. Figure 3 Figure 3 is a schematic diagram of a multistage class traveling wave fluid driving device in a different cavity series connection mode of the present application. Figure 4 Figure 4 is a schematic diagram of a multistage class traveling wave fluid driving device array in a different assembly mode of the present application. Figure 5 Figure 5 is a schematic diagram of the multistage class traveling wave fluid driving device of the present application performing a sweeping type jet. Wherein cavity 1, piezoelectric vibrator 2, intermediate piece 3, adapter 4. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0017] The experimental methods used in the following embodiments are conventional methods unless otherwise specified. The materials, reagents, methods and instruments used are conventional materials, reagents, methods and instruments in the art unless otherwise specified, and can be obtained by commercial channels by those skilled in the art.

[0018] The present embodiment proposes a multistage class traveling wave fluid driving device, which comprises a cavity 1, a piezoelectric vibrator 2, an intermediate piece 3 and an adapter 4. The cavity 1 has a plurality of nozzle structures on it for the entry and exit of the transported fluid. The edge part of the piezoelectric vibrator 2 is fixedly installed in the boss of the outer wall of the cavity 1 by sealing glue. The upper end and the lower end of the cavity 1 can both install the piezoelectric vibrator 2, which strengthens the directional driving of the fluid.

[0019] The nozzle structure of the cavity 1 can be integrally glued with the intermediate piece 3, and a plurality of cavities 1 can be connected in series in different ways to form a multi-stage fluid driving device; The multi-stage fluid driving device can also be assembled into a planar or three-dimensional array with multiple nozzle structures through the adapter 4, and can realize directional driving of fluid in multiple directions under the control of different excitation signals.

[0020] The number of cavities 1 and piezoelectric vibrators 2 of the multi-stage row wave-like fluid driving device is N, N is an odd number greater than or equal to three, the number of nozzle structures of the cavity 1 is S, S is an integer greater than or equal to two; the number of intermediate pieces 3 is M, M is an integer greater than or equal to 1; the number of adapters 4 is T, T is an integer greater than or equal to 1.

[0021] The shape of the outer wall, inner cavity and nozzle structure of the cavity 1 is cylindrical, cubic, spherical or any other suitable shape; the piezoelectric vibrator 2 is circular, square, triangular or any other suitable shape; the shape of the intermediate piece 3 and the adapter 4 is cylindrical, circular truncated cone, square or any other suitable shape.

[0022] The intermediate piece 3 can be integrally manufactured with the cavity 1, or can be a flexible or rigid pipeline.

[0023] The piezoelectric vibrator 2 is a regular-shaped piezoelectric bimorph or other piezoelectric material, the material of the cavity 1 is any material with certain strength and hardness, and the material of the adapter 4 is any flexible or rigid material.

[0024] The shape of the multi-stage fluid driving device after a plurality of cavities 1 are connected in series through their nozzle structures and intermediate pieces 3 can be a straight line, a curve, a cross or any other suitable shape.

[0025] The multi-stage fluid driving device can be assembled into a planar straight line, a planar cross, a three-dimensional cross or any other suitable shape through the adapter 4, and has a plurality of nozzle structures that can be used as fluid inlets and outlets.

[0026] The fluid driven by the multi-stage fluid driving device can be air, water or other fluids.

[0027] The surface of the piezoelectric vibrator 2 and the wire connection are insulated, the vibration of the piezoelectric vibrator 2 is controlled by adjusting the voltage, frequency, duty cycle and waveform of the excitation signal applied to the plurality of piezoelectric vibrators 2, and the excitation signals of adjacent piezoelectric vibrators 2 have a phase difference of 90°, thereby realizing row wave-like control of the fluid driving speed and driving direction of the multi-stage fluid driving device. See Figures 1 to 4The embodiment is a control method of a multi-stage class traveling wave fluid driving device, which comprises a cavity 1, a piezoelectric vibrator 2, an intermediate piece 3, and an adapter 4. The cavity 1 is provided with a plurality of nozzle structures for the input and output of the transported fluid. The edge portion of the piezoelectric vibrator 2 is fixedly installed in the boss of the outer wall of the cavity 1 by sealing glue. The nozzle structure of the cavity 1 can be integrally glued with the intermediate piece 3. A plurality of cavities 1 can be connected in series in different ways to form a multi-stage fluid driving device. The multi-stage fluid driving device can also be assembled into a planar or three-dimensional array with a plurality of nozzle structures through the adapter 4. Under the control of different excitation signals, the multi-stage fluid driving device can realize the directional driving of the fluid in multiple directions.

[0028] In the embodiment, the number of cavities 1 and the number of piezoelectric vibrators 2 of the multi-stage class traveling wave fluid driving device are 5, and the number of nozzle structures of the cavity 1 is 2 or 4. The number of intermediate pieces 3 is 4, and the number of adapters 4 is 1.

[0029] The shape of the outer wall, inner cavity, and nozzle structure of the cavity 1 is cylindrical. The piezoelectric vibrator 2 is circular. The shape of the intermediate piece 3 and the adapter 4 is cylindrical.

[0030] The intermediate piece 3 is integrally manufactured with the cavity 1. The piezoelectric vibrator 2 is a regular-shaped piezoelectric buzzer. The materials of the cavity 1 and the adapter 4 are polyethylene materials with certain strength and hardness.

[0031] The multi-stage fluid driving device after the series connection of a plurality of cavities 1 through the nozzle structure and the intermediate piece 3 has a linear shape, a curved shape, and a cross shape.

[0032] The multi-stage fluid driving device is assembled into a planar cross shape and a three-dimensional cross shape through the adapter 4, and has a plurality of nozzle structures that can be used as fluid inlets and outlets.

[0033] The fluid driven by the multi-stage fluid driving device can be air, water, or other fluids.

[0034] The surface of the piezoelectric vibrator 2 and the wire connection are insulated. The vibration of the piezoelectric vibrator 2 is controlled by adjusting the voltage, frequency, duty cycle, and waveform of the excitation signal applied to the plurality of piezoelectric vibrators 2. The excitation signals of adjacent piezoelectric vibrators 2 have a phase difference of 90°, thereby realizing the control of the driving speed and direction of the multi-stage fluid driving device in a traveling wave mode. The five piezoelectric oscillators 2 are inputted with square wave excitation signals, the phase difference between adjacent signals is 90°, the period of the square wave signal is set as T0, in the time period of 0~0.25T0, the first and fifth piezoelectric oscillators 2 vibrate upwards, the fourth piezoelectric oscillator 2 vibrates downwards, and the other piezoelectric oscillators 2 do not vibrate, then the fluid flows out from the fourth cavity 1 and flows into the first cavity 1 and the fifth cavity 1 from the two jet structures; in the time period of 0.25~0.5T0, the first and fifth piezoelectric oscillators 2 vibrate downwards, the second piezoelectric oscillator 2 vibrates upwards, and the other piezoelectric oscillators 2 do not vibrate, then the fluid flows out from the first cavity 1 and the fifth cavity 1 and flows into the second cavity 1 outside the device; in the time period of 0.5~0.75T0, the second piezoelectric oscillator 2 vibrates downwards, the third piezoelectric oscillator 2 vibrates upwards, and the other piezoelectric oscillators 2 do not vibrate, then the fluid flows out from the second cavity 1 and flows into the third cavity 1 outside the device, and the whole device shows that the fluid flows from right to left; in the time period of 0.75~T0, the third piezoelectric oscillator 2 vibrates downwards, the fourth piezoelectric oscillator 2 vibrates upwards, and the other piezoelectric oscillators 2 do not vibrate, then the fluid flows out from the third cavity 1 and flows into the fourth cavity 1 outside the device, and the whole device shows that the fluid flows from right to left.

[0035] An electronic device includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method when executing the computer program.

[0036] A computer readable storage medium for storing computer instructions, the computer instructions are executed by a processor to implement the steps of the above method.

[0037] The memory in the embodiments of the application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Where the nonvolatile memory is a read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically EPROM (EEPROM), or flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example, and not limitation, many forms of RAM are available, for example, static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct rambus RAM (DR RAM). Note that the memory described herein is intended to include, among others, these and any other memory suitable for storing the data adaptively described herein.

[0038] In the above embodiments, all or part of the methods can be implemented by software, hardware, firmware, or any combination thereof. When implemented by software, all or part of the methods can be implemented in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired manner such as a coaxial cable, an optical fiber, a digital subscriber line (DSL), or a wireless manner such as infrared, wireless, microwave, etc. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes one or more available media sets. The available medium can be a magnetic medium such as a floppy disk, a hard disk, a magnetic tape, an optical medium such as a digital video disc (DVD), or a semiconductor medium such as a solid state disc (SSD), etc.

[0039] In the implementation process, each step of the above method can be completed by the integrated logic circuit of hardware in the processor or the instruction in the form of software. The steps of the method disclosed in the embodiments of the present application can be directly embodied as hardware processor execution completion, or executed by a combination of hardware and software modules in the processor. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, or other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

[0040] It should be noted that the processor in the embodiments of the present application can be an integrated circuit chip with signal processing capability. In the implementation process, each step of the method embodiments can be completed by the integrated logic circuit of hardware in the processor or the instructions in the form of software. The processor mentioned above can be a general processor, a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application can be directly embodied as hardware code processing for execution, or executed by a combination of hardware and software modules in the code processing. The software module can be located in a random access memory, a flash memory, a read only memory, a programmable read only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0041] The above describes a multi-stage class traveling wave fluid driving device and a control method thereof. The principle and implementation of the present application are described. The above embodiment is only used to help understand the method and core idea of the present application. For those skilled in the art, according to the idea of the present application, the specific implementation and application range will be changed. The above description should not be understood as a limitation of the present application.

Claims

1. A multi-stage quasi-traveling wave fluid driving device, characterized in that: the multi-stage quasi-traveling wave fluid driving device comprises a cavity (1), a piezoelectric vibrator (2), an intermediate piece (3), and an adapter (4); the cavity (1) has multiple nozzle structures for the entry and exit of the transported fluid, the edge portion of the piezoelectric vibrator (2) is fixedly installed in the boss on the outer wall of the cavity (1) by sealing glue, and the upper end and the lower end of the cavity (1) can be installed with the piezoelectric vibrator (2); multiple cavities (1) can be connected in series through the intermediate piece (3) to form a multi-stage fluid driving device; the multi-stage fluid driving device can also be assembled into a planar or three-dimensional array with multiple nozzle structures through the adapter (4).

2. The driving device according to claim 1, characterized in that: the shape of the outer wall, inner cavity, and nozzle structure of the cavity (1) is cylindrical, cubic, or spherical, the piezoelectric vibrator (2) is circular, square, or triangular, the shape of the intermediate piece (3) and the adapter (4) is cylindrical, circular truncated cone, or square.

3. The driving device according to claim 2, characterized in that: the number of cavities (1) and piezoelectric vibrators (2) is N, N is an odd number greater than or equal to three; the number of nozzle structures of the cavity (1) of the multi-stage quasi-traveling wave fluid driving device is S, S is an integer greater than or equal to two; the number of intermediate pieces (3) is M, M is an integer greater than or equal to one; the number of adapters (4) is T, T is an integer greater than or equal to one.

4. The driving device according to claim 3, characterized in that: the intermediate piece (3) is a flexible or rigid pipe that can be integrally manufactured with the cavity (1) or glued with the nozzle structure of the cavity (1) to form an integral whole.

5. The driving device according to claim 4, characterized in that: the material of the cavity (1) has a predetermined strength and hardness to maintain the stability of the cavity structure; the piezoelectric vibrator (2) is a regular-shaped piezoelectric element; the surface of the piezoelectric vibrator (2) and the wire connection are insulated; the material of the adapter (4) is flexible or rigid, wherein the flexible material can adapt to the adjustment of the assembly angle, and the rigid material can maintain a fixed connection form.

6. The driving device according to claim 5, characterized in that: the shape of the multi-stage fluid driving device is a straight line, a curve, or a cross; the multi-stage fluid driving device can be assembled into a planar straight line, a planar cross, or a three-dimensional cross through the adapter (4), and has multiple nozzle structures that can be used as fluid inlets and outlets.

7. The driving device according to claim 6, characterized in that: the fluid driven by the multi-stage fluid driving device is air, water, or other fluids; the multi-stage fluid driving device can perform directional fluid driving to generate a jet in a specific direction or perform sweeping jet in different directions on a local area.

8. A control method for the multi-stage quasi-traveling wave fluid driving device according to any one of claims 1 to 7, characterized in that: The excitation signals are applied to the plurality of piezoelectric vibrators (2), the vibration of the piezoelectric vibrators (2) is controlled by regulating the voltage, frequency, duty cycle and waveform of the excitation signals, and the excitation signals of adjacent piezoelectric vibrators (2) have a phase difference of 90°, so that the fluid driving speed and driving direction of the multi-stage fluid driving device are controlled in a traveling wave mode. 9.An electronic device comprising a memory and a processor, the memory storing a computer program, wherein, The processor implements the steps of the method of claim 8 when executing the computer program.

10. A computer readable storage medium for storing computer instructions, characterized in that, The computer instructions implement the steps of the method of claim 8 when executed by the processor.

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