Method for propelling a liquid using ultrasound and method for clearing an obstruction in a pipe

Abstract

The application discloses a method for pushing liquid by ultrasonic waves and a method for dredging an obstruction in a pipeline. The method for pushing liquid by ultrasonic waves comprises the following steps: acquiring an excitation signal, wherein the excitation signal is used for exciting a plurality of ultrasonic probes to generate ultrasonic waves; and under the excitation of the excitation signal, the plurality of ultrasonic probes are used to output a plurality of ultrasonic waves with phase differences, so as to push liquid to generate a spiral fluid. According to the scheme, vertical and tangential pushing forces can be generated simultaneously, a spiral fluid with a wider application range is generated, and liquid is better pushed.

Description

Technical Field

[0001] This application belongs to the field of ultrasonic technology, and in particular relates to a method for using ultrasonic waves to propel liquid and a method for clearing blockages in pipes. Background Technology

[0002] Currently, traditional liquid propulsion devices are mostly shaft-driven propellers. Power from an electromagnetic motor or similar source is transmitted to the propeller via a shaft, causing it to rotate and propel the liquid, generating thrust. However, this method can cause some contamination of the liquid due to the propeller's agitation. Furthermore, the overall structure of the device is complex and cannot be miniaturized.

[0003] In recent years, with the rapid development of ultrasonic technology, ultrasonic piezoelectric actuation has been widely used in aerospace, robotics, automotive, precision positioning, medical devices, and micro-mechanical fields. Ultrasonic piezoelectric actuation is a direct driving method that utilizes the inverse piezoelectric effect of piezoelectric materials to convert electrical energy into mechanical energy, driving forward through a reaction force. In a liquid medium, the liquid flows along the direction of ultrasonic wave propagation.

[0004] However, traditional methods primarily use ultrasonic piezoelectric actuation to generate vertical thrust in the liquid, and then use the reaction force to propel the object forward. This method cannot generate thrust in the ultrasonic tangential direction, and therefore cannot meet the propulsion requirements of objects that need lateral shear force.

[0005] For example, when clearing blockages such as dirt in pipes, traditional methods only generate vertical thrust on the liquid, which can only flush the inner wall of the pipe vertically in the direction of liquid movement. For larger blockages, the vertical thrust of the liquid is limited, so even if the blockage is flushed off the inner wall of the pipe, it cannot be discharged from the pipe. Therefore, this method is often ineffective.

[0006] Therefore, how to better utilize ultrasound to propel liquids is a technical problem that urgently needs to be solved. Summary of the Invention

[0007] This application provides a method for generating helical fluid using ultrasound, which can simultaneously generate vertical and lateral thrust to better propel the liquid.

[0008] In a first aspect, embodiments of this application provide a method for using ultrasound to drive a liquid, the method comprising: acquiring an excitation signal, the excitation signal being used to excite a plurality of ultrasonic probes to generate ultrasonic waves; and under the excitation of the excitation signal, using the plurality of ultrasonic probes to output a plurality of ultrasonic waves with a phase difference to drive the liquid to generate a spiral fluid.

[0009] The method of this application, under the excitation of an excitation signal, involves multiple ultrasonic probes outputting ultrasonic waves with a phase difference, forming a moving acoustic radiation field. This radiation field generates varying radiation pressure in the liquid, causing the liquid to form a spiral fluid under the influence of this radiation pressure. This propels objects within the liquid to move vertically while simultaneously increasing the tangential thrust. Compared to traditional methods of propelling liquids, the method of this application has a wider range of applications. For example, the method of this application does not require complex transmission devices, making it easier to miniaturize and apply to micro-pipelines. Furthermore, the method provided in the embodiments of this application can replace traditional propeller propulsion in underwater propulsion scenarios, while avoiding the liquid contamination problem associated with traditional propeller propulsion methods and ensuring the purity of the liquid.

[0010] In one possible implementation of the first aspect, the phase difference between the ultrasonic waves generated by the first ultrasonic probe and the ultrasonic waves generated by the second ultrasonic probe among the plurality of ultrasonic probes is a preset phase difference. The first ultrasonic probe is any one of the plurality of ultrasonic probes, and the second ultrasonic probe is an ultrasonic probe that is adjacent to the first ultrasonic probe in a clockwise or counterclockwise direction.

[0011] In this implementation, due to the preset phase difference between the ultrasonic waves, a moving, periodic radiating sound field can be formed, thereby creating a spiral fluid and better propelling the liquid.

[0012] In one possible implementation of the first aspect, the preset phase difference is the ratio between the phase period of the ultrasonic waves generated by the multiple ultrasonic probes and the number of ultrasonic probes.

[0013] In this implementation, a fixed preset phase difference simplifies the circuit. The preset phase difference can also be non-fixed, allowing for a more flexible radiated sound field that can meet specific propulsion needs when moving liquids, such as changing the propulsion speed.

[0014] In one possible implementation of the first aspect, the sinking distance between the first ultrasonic probe and the second ultrasonic probe corresponds to a preset phase difference.

[0015] In this implementation, setting the sinking distance allows multiple ultrasonic probes to be driven by only one ultrasonic drive circuit, which simplifies the circuit.

[0016] In one possible implementation of the first aspect, multiple ultrasound probes are arranged in a ring-shaped ultrasound array structure.

[0017] In this implementation, the ring array structure allows the ultrasonic waves output from multiple ultrasonic probes to form a moving, periodic radiating sound field, thereby better propelling the liquid in a helical motion. Furthermore, this arrangement facilitates the miniaturization of the device.

[0018] In one possible implementation of the first aspect, each of the plurality of ultrasonic probes includes a transducer module for converting an alternating current signal into a mechanical wave; under the excitation of an excitation signal, the plurality of ultrasonic probes output a plurality of ultrasonic waves with a phase difference to drive the liquid to generate a spiral fluid, specifically including: when the excitation signal is applied to the transducer module, the transducer module converts the excitation signal into a plurality of ultrasonic waves with a phase difference, the excitation signal being a sine or cosine alternating current signal.

[0019] In one possible implementation of the first aspect, the excitation signal may be obtained using multiple ultrasonic drive circuits; each ultrasonic probe corresponds to one ultrasonic drive circuit.

[0020] In this implementation, each ultrasonic probe corresponds one-to-one with an ultrasonic drive circuit, making the driving method more flexible and providing better redundancy.

[0021] In one possible implementation of the first aspect, the excitation signal can also be obtained using the same ultrasonic drive circuit.

[0022] In this implementation, the ultrasonic drive circuit is relatively simple to implement, and fewer drive wires are required to connect the drive circuit to the ultrasonic probe, which is beneficial for miniaturization.

[0023] Secondly, this application also provides a method for clearing blockages in pipes using ultrasonic waves. The method includes: acquiring an excitation signal to excite multiple ultrasonic probes to generate ultrasonic waves; under the excitation of the excitation signal, using the multiple ultrasonic probes to output multiple ultrasonic waves with phase differences to drive the liquid to generate a spiral fluid; the spiral fluid applying a spiral forward pushing force and shearing force to the blockage, causing the blockage to break up.

[0024] The method of this application utilizes the vertical thrust and shearing force of the spiral fluid moving forward in a spiral motion to break up blockages in the pipe, thereby reducing the volume of the blockages and making them easier for the spiral fluid to carry out of the pipe, thus clearing the blockage. If the inner wall of the pipe is not smooth, such as a corrugated pipe, the spiral fluid formed by the method provided in this application can effectively clean blockages attached to the uneven inner wall through its spiral forward movement.

[0025] Thirdly, this application also provides an apparatus for propelling liquid using ultrasound, the apparatus having the function of implementing the method in the first aspect or any possible implementation thereof.

[0026] In one embodiment, the device includes:

[0027] An acquisition unit is used to acquire an excitation signal, which is used to excite multiple ultrasonic probes to generate ultrasonic waves.

[0028] The processing unit is used to output multiple ultrasonic waves with phase differences using multiple ultrasonic probes under the excitation of the above-mentioned excitation signal, thereby driving the liquid to generate a spiral fluid.

[0029] Fourthly, this application also provides an apparatus for clearing blockages in pipes using ultrasonic waves, the apparatus having the function of implementing the method in the second aspect or any possible implementation thereof.

[0030] In one embodiment, the device includes:

[0031] An acquisition unit is used to acquire an excitation signal, which is used to excite multiple ultrasonic probes to generate ultrasonic waves.

[0032] The processing unit is used to output multiple ultrasonic waves with phase difference using multiple ultrasonic probes under the excitation signal mentioned above, thereby driving the liquid to generate a spiral fluid; the spiral fluid applies a spiral forward pushing force and shear force to the blockage, causing the blockage to break.

[0033] Fifthly, embodiments of this application provide an ultrasonic device. The ultrasonic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements a method according to any of the implementations of the first aspect described above.

[0034] Sixthly, embodiments of this application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program, which, when executed by a processor, implements the method of any of the implementations of the first aspect described above.

[0035] In a seventh aspect, embodiments of this application provide a computer program product that, when run on a terminal device, causes the terminal device to execute any of the implementation methods of the first aspect described above. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1This is a schematic diagram of the process for using ultrasound to propel liquid provided in this application;

[0038] Figure 2 This is a schematic diagram illustrating the application of the ultrasonic-driven liquid method provided in this application;

[0039] Figures 3A-3C This is a schematic diagram of the multiple ultrasonic probes provided in this application;

[0040] Figure 4 This is a waveform diagram of the ultrasonic probe output provided in this application;

[0041] Figures 5A-5E This is a schematic diagram of isobars for instantaneous sound intensity within a period provided in this application;

[0042] Figure 6 This is a schematic diagram illustrating the application of the ultrasonic-driven liquid method provided in this application;

[0043] Figure 7 This is a schematic diagram of the process for using ultrasonic waves to clear blockages in pipes provided in this application.

[0044] Figure 8 This is a schematic diagram illustrating the application of the ultrasonic method for clearing blockages in pipes provided in this application.

[0045] Figure 9 This is a schematic diagram of the structure of the ultrasonic device for propelling liquid provided in this application;

[0046] Figure 10 This is a schematic diagram of the ultrasonic device provided in this application. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0048] Figure 1 This is a schematic diagram of the process for using ultrasound to propel liquid, as provided in this application.

[0049] S101, acquire the excitation signal.

[0050] This excitation signal is used to excite multiple ultrasonic probes to generate ultrasonic waves.

[0051] Ultrasound refers to sound waves with a vibration frequency greater than 20kHz that are inaudible and imperceptible to humans in natural environments. Like audible sound waves, ultrasound is a type of mechanical vibration. Vibration refers to the reciprocating motion of a particle around its equilibrium position. For example, when a drumhead is struck, it vibrates up and down; this vibration propagates in all directions through the air, creating a sound wave. Ultrasound, due to its high frequency, has high power. In a liquid medium, it radiates in all directions, generating radiation pressure that propels the liquid forward.

[0052] Ultrasonic probes can output ultrasonic waves by utilizing the inverse piezoelectric effect of piezoelectric materials. That is, when an excitation signal is applied to a piezoelectric material, the material will undergo mechanical deformation. By applying an alternating sinusoidal electrical signal to a piezoelectric material, the material will produce sinusoidal length expansion and contraction, thereby generating vibrating ultrasonic waves.

[0053] S102, under the excitation of the excitation signal, multiple ultrasonic probes output multiple ultrasonic waves with phase difference to drive the liquid to generate a spiral fluid.

[0054] Multiple ultrasonic probes output multiple ultrasonic waves with phase differences. Since sound waves are spherical waves, the interaction of multiple ultrasonic waves with phase differences can form a moving, periodic sound radiation field. Within one cycle, the instantaneous pressure difference creates pressure on the liquid, propelling it forward in a spiral motion.

[0055] When the method of this application is applied to fields such as ships, the propelling liquid can be water; when the method of this application is applied to the human body, the propelling liquid can be blood, cavitary fluid, or other fluids present in the human body. This application does not limit the type of liquid.

[0056] It should be noted that there is no specific limit to the number of ultrasonic probes in this application. There can be 2, 3, 4, etc., all of which can form a spiral fluid, giving the liquid both vertical and tangential driving forces.

[0057] In addition, the vertical thrust, also known as the spiral forward thrust, is a force along the direction of ultrasonic wave emission; the tangential thrust, also known as the spiral forward shear force, is a force perpendicular to the direction of ultrasonic wave emission.

[0058] Figure 1 The method shown involves multiple ultrasonic probes outputting ultrasonic waves with a phase difference under the excitation signal, forming a moving acoustic radiation field. This radiation field generates varying radiation pressure in the liquid, which, under the action of this radiation pressure, forms a spiral fluid. This propels the liquid to move vertically while increasing the thrust in the tangential direction.

[0059] Traditional methods of propelling liquids, such as propeller propulsion, are highly susceptible to environmental interference. When ships use propellers, they may encounter situations such as entanglement with seaweed or impacts from foreign objects, rendering them unable to function properly. Existing ultrasonic propulsion methods can only generate vertical thrust perpendicular to the ultrasonic plane.

[0060] Compared to traditional methods of propelling liquids, the method of this application has a wider range of applications. For example, the method of this application does not require complex transmission devices during application, thus it is easier to miniaturize and can be applied in micro-pipes. Furthermore, the method provided in the embodiments of this application can replace traditional propeller propulsion methods in underwater propulsion scenarios, while avoiding the problem of liquid contamination associated with traditional propeller propulsion methods and ensuring the purity of the liquid.

[0061] In one implementation, the phase difference between the ultrasonic waves generated by the first ultrasonic probe and the ultrasonic waves generated by the second ultrasonic probe among multiple ultrasonic probes is a preset phase difference. The first ultrasonic probe is any one of the multiple ultrasonic probes, and the second ultrasonic probe can be an ultrasonic probe adjacent to the first ultrasonic probe in a clockwise or counterclockwise direction.

[0062] The ultrasonic probe outputs ultrasonic waves. Due to the preset phase difference between the ultrasonic waves, a moving, periodic radiating sound field can be formed, thereby creating a spiral fluid and better propelling the liquid.

[0063] In one implementation, the preset phase difference can be the ratio between the phase period of the ultrasonic waves generated by multiple ultrasonic probes and the number of ultrasonic probes. The preset phase difference can be a fixed phase difference, i.e., the ratio between the phase period of the generated ultrasonic waves and the number of ultrasonic probes. This setting simplifies the circuit. The preset phase difference can also be a non-fixed phase difference, i.e., the phase difference between the ultrasonic waves output by the first ultrasonic probe and the second ultrasonic probe is a different value, as long as the sum of the phase differences between the first and second ultrasonic probes is one or more phase periods. This setting allows for a more flexible radiated sound field, meeting the pushing requirements under special circumstances when propelling liquids, such as changing the pushing speed.

[0064] In one implementation, the dip distance between the first and second ultrasonic probes corresponds to a preset phase difference. Setting the dip distance allows multiple ultrasonic probes to be driven by only one ultrasonic drive circuit, simplifying the circuitry.

[0065] In one implementation, multiple ultrasonic probes are arranged in a ring-shaped ultrasonic array structure. This ring array structure allows the ultrasonic waves output from the multiple probes to form a moving, periodic radiating sound field, thereby better propelling the liquid in a helical motion. Furthermore, this arrangement facilitates the miniaturization of the device.

[0066] In one implementation, each of the multiple ultrasonic probes includes a transducer module that converts an alternating current signal into a mechanical wave. Under the excitation of an excitation signal, the multiple ultrasonic probes output multiple ultrasonic waves with phase differences, driving the liquid to generate a helical fluid. Specifically, when the excitation signal is applied to the transducer module, the transducer module converts the excitation signal into multiple ultrasonic waves with phase differences. The excitation signal can be a sine or cosine alternating current signal.

[0067] In one implementation, the excitation signal can be obtained using multiple ultrasonic drive circuits; each ultrasonic probe corresponds to one ultrasonic drive circuit. This implementation provides a one-to-one correspondence between each ultrasonic probe and ultrasonic drive circuit, resulting in more flexible driving methods and better redundancy.

[0068] In one implementation, the excitation signal can also be obtained using the same ultrasonic drive circuit. In this approach, the ultrasonic drive circuit is simpler to implement, and fewer drive wires are required to connect the drive circuit to the ultrasonic probe, which is beneficial for miniaturization.

[0069] Figure 2 This is a schematic diagram illustrating the application of the ultrasonic-driven liquid propulsion method provided in this application.

[0070] Figure 2 The application scenario of four ultrasound probes is illustrated. Within blood vessel 1, the four ultrasound probes are arranged in a ring-shaped ultrasound array. In a clockwise direction, the four probes are ultrasound probe 2-1, ultrasound probe 2-2, ultrasound probe 2-3, and ultrasound probe 2-4. After being excited by an excitation signal, they output ultrasound waves with a phase difference, thereby forming a moving, periodic radiated sound field. The instantaneous sound intensity difference of this radiated sound field generates pressure on the liquid, propelling the blood 3 within blood vessel 1 in a spiral motion. However, it should be understood that... Figure 2 This example uses four ultrasound probes, but other numbers are also possible.

[0071] Figures 3A-3C This is a schematic diagram of the multiple ultrasonic probes provided in this application.

[0072] Multiple ultrasound probes are arranged in a ring-shaped ultrasound array structure.

[0073] In one implementation, multiple ultrasound probes can be arranged in a circular array structure. For example, Figure 2 Ultrasound probes 2-1, 2-2, 2-3, and 2-4 are arranged on the same circular plane, with all probes equidistant from the center point. This arrangement offers good stability and is more suitable for use within human blood vessels.

[0074] In one implementation, multiple ultrasound probes can also be arranged in a closed ring array structure. For example, as shown below... Figure 3A As shown, ultrasound probes 4-1, 4-2, 4-3, and 4-4 are arranged at the vertices of a convex quadrilateral. For example, when there are three ultrasound probes, as... Figure 3B As shown, ultrasound probes 4-5, 4-6, and 4-7 can be arranged at the apex of a triangle. For example, when there are five ultrasound probes, such as... Figure 3C As shown, ultrasonic probes 4-8, 4-9, 4-10, 4-11, and 4-12 can be arranged at the vertex of a pentagon. This arrangement is flexible and can be adjusted according to the number of ultrasonic probes. It is also more suitable for traditional underwater propulsion scenarios where space is not a constraint, such as ships, which can use this method to replace propeller propulsion to propel liquid forward. Furthermore, by setting the phase of the ultrasonic waves output by the ultrasonic probes, the ship's steering can be controlled.

[0075] Figure 4 This is a waveform diagram of the ultrasonic probe output provided in this application.

[0076] It should be noted that if any one of the multiple ultrasound probes is regarded as the first ultrasound probe, the ultrasound probes adjacent to the first ultrasound probe in the clockwise or counterclockwise direction are regarded as the second ultrasound probes.

[0077] In one example, the ultrasound probe that is closest to the first ultrasound probe in a clockwise or counterclockwise direction can be considered the second ultrasound probe. Figure 2 In the application scenario, if ultrasound probe 2-1 is regarded as the first ultrasound probe, then ultrasound probe 2-2 can be regarded as the second ultrasound probe if rotated counterclockwise. If rotated clockwise, ultrasound probe 2-4 can be regarded as the second ultrasound probe.

[0078] In another implementation, the ultrasound probe with the shortest straight-line distance to the first ultrasound probe can be considered the second ultrasound probe. Alternatively, the correspondence between the first and second ultrasound probes can be predefined.

[0079] The phase difference between the ultrasonic waves generated by the first ultrasonic probe and the ultrasonic waves generated by the second ultrasonic probe is a preset phase difference.

[0080] In one implementation, the preset phase difference can be a fixed phase difference, which is the ratio between the phase period of the generated ultrasound and the number of ultrasound probes. Figure 4 Is Figure 2 In application scenarios where the preset phase difference is a fixed phase difference Waveform output from the ultrasonic probe. Fixed phase difference. This is calculated from the phase period 2π and the number of ultrasonic probes, 4. Specifically, in a counter-clockwise direction, when ultrasonic probe 2-1 is the first ultrasonic probe, ultrasonic probe 2-2 is the second ultrasonic probe. Similarly, when ultrasonic probe 2-2 is the first ultrasonic probe, ultrasonic probe 2-3 is the second ultrasonic probe; and when ultrasonic probe 2-3 is the first ultrasonic probe, ultrasonic probe 2-4 is the second ultrasonic probe. The preset phase difference between the first and second ultrasonic probes is a fixed phase difference. Furthermore, curve A represents the waveform of the ultrasonic wave output by ultrasonic probe 2-1, which can be expressed as y1 = sin(t), where t represents time. The ultrasonic wave output by this probe has a phase of 0 and a phase period of 2π. Curve B represents the waveform of the ultrasonic wave output by ultrasonic probe 2-2, which can be expressed as... The phase of the ultrasonic waves output by ultrasonic probe 2-2 is This can be seen as an advancement of the ultrasonic waves output by ultrasonic probe 2-1. The C-curve represents the ultrasonic wave output from ultrasonic probe 2-3, which can be expressed as y3 = sin(t + π). The phase of the ultrasonic wave output from ultrasonic probe 2-3 is π, which can be considered as an advancement of the ultrasonic wave output from ultrasonic probe 2-2 by π. The time. The D-curve is the waveform of the ultrasonic waves output by ultrasonic probes 2-4, which can be represented as... The phase of the ultrasonic waves output by ultrasonic probes 2-4 is This can be seen as an earlier delivery of ultrasound waves from the ultrasonic probe 2-3, based on the output of the ultrasonic waves from the probe 2-3. The time. At the same time, the ultrasound output from ultrasound probe 2-1 can also be considered as an earlier version of the ultrasound output from ultrasound probe 2-4. The time.

[0081] In another example, in Figure 3B In this application scenario, when the number of ultrasound probes is 3, the preset phase difference can be a fixed phase difference. It is calculated from the phase period 2π and the number of ultrasonic probes 3. Specifically, the ultrasonic waves output by ultrasonic probes 4-5 can be sin(t), and the ultrasonic waves output by ultrasonic probes 4-6 can be... The ultrasonic waves output by ultrasonic probes 4-7 can be It should be understood that the values ​​in this example are merely an example and are not limited.

[0082] In another implementation, the preset phase difference can also be a non-fixed phase difference, meaning the phase difference between the ultrasonic waves output by the first and second ultrasonic probes is different, as long as the sum of the phase differences between the first and second ultrasonic probes is one or more phase periods. (Continuing with...) Figure 2 Taking the four ultrasonic probes in the example, the ultrasonic wave output by ultrasonic probe 2-1 can be y1 = sin(t), and the ultrasonic wave output by ultrasonic probe 2-2 can be... The phase difference between the ultrasonic waves output by ultrasonic probe 2-1 and the phase difference is... The ultrasonic waves output by ultrasonic probe 2-3 can be The phase difference between the ultrasonic waves output by ultrasonic probe 2-2 and the phase difference is... The ultrasonic waves output by ultrasonic probes 2-4 can be The phase difference between the ultrasonic waves output by ultrasonic probe 2-3 and the phase difference is... Meanwhile, the ultrasonic waves output by ultrasonic probe 2-1 have a phase difference relative to the ultrasonic waves output by ultrasonic probe 2-4. The phase differences of the ultrasonic waves output by the four ultrasonic probes are as follows: as well as The sum equals a phase period of 2π. In this case, a moving, periodic radiating sound field can also be formed, thereby driving the liquid in a spiral motion.

[0083] Figures 5A-5E This is a schematic diagram of isobars representing the instantaneous sound intensity within a period, as provided in this application.

[0084] exist Figure 2 In application scenarios, four ultrasound probes simultaneously output as... Figure 4 The ultrasonic waves shown produce a changing radiated sound field. Furthermore, due to the constraint of a preset phase difference, this radiated sound field is periodic. Figures 5A-5E The key changes in the radiated sound field over one cycle are shown.

[0085] Figure 5A This is a schematic diagram of isobars representing the instantaneous sound intensity at the initial moment of the cycle. The initial moment of the cycle is time 0 in the first cycle, time 2π in the second cycle, and so on, reaching time 2kπ in the kth cycle, where k is a natural number. Figure 5AAs shown, at the initial moment of the cycle, the ultrasonic amplitude output by ultrasonic probes 2-1 and 2-3 is 0. Therefore, the ultrasonic waves output by ultrasonic probes 2-2 and 2-4 exhibit a ring-shaped radiating sound field in the liquid medium. The closer to the ultrasonic probe, the denser the isobars, indicating a stronger sound field and greater pressure on the liquid. Thus, at this moment, the ultrasonic waves push the liquid outwards and outwards. Subsequently, the ultrasonic amplitude output by ultrasonic probes 2-1 and 2-3 gradually increases, while the ultrasonic amplitude output by ultrasonic probes 2-2 and 2-4 gradually decreases. Consequently, the radiating sound field shifts clockwise.

[0086] Figure 5B This is a schematic diagram of isobars representing the instantaneous sound intensity at a quarter-second of the period. A quarter-second of the period, in the first period, is... At time, in the second cycle The time, and so on, is the time in the k-th period. At time k, where k is a natural number. For example... Figure 5B As shown, at the quarter-cycle point, the ultrasonic amplitude output by ultrasonic probes 2-1 and 2-3 reaches its maximum, while the ultrasonic amplitude output by ultrasonic probes 2-2 and 2-4 gradually decreases to 0. At this time, the isobars are relatively dense at ultrasonic probes 2-1 and 2-3, and become sparser and divergent as they radiate outwards. Subsequently, the ultrasonic amplitude output by ultrasonic probes 2-1 and 2-3 gradually decreases, while the ultrasonic amplitude output by ultrasonic probes 2-2 and 2-4 gradually increases. Therefore, the radiated sound field continues to move clockwise.

[0087] Figure 5C This is a schematic diagram of isobars representing the instantaneous sound intensity at half the time interval of a period. Half the time interval occurs at time π in the first period, 3π in the second period, and so on, reaching π+2kπ in the kth period, where k is a natural number. Figure 5C As shown, at the half-cycle point, the ultrasonic amplitudes output by ultrasonic probes 2-2 and 2-4 reach their maximum, and their radiation direction is opposite to that at the initial moment. Meanwhile, the ultrasonic amplitudes output by ultrasonic probes 2-1 and 2-3 gradually decrease to 0. At this time, the isobars are relatively dense at ultrasonic probes 2-2 and 2-4, and become sparser towards the outwards, exhibiting a divergent pattern. Subsequently, the ultrasonic amplitudes output by ultrasonic probes 2-2 and 2-4 gradually decrease, while the ultrasonic amplitudes output by ultrasonic probes 2-1 and 2-3 gradually increase. Therefore, the radiated sound field continues to move clockwise.

[0088] Figure 5DThis is a schematic diagram of isobars representing the instantaneous sound intensity at three-quarters of the cycle. Three-quarters of the cycle, in the first cycle, is... At time, in the second cycle The time, and so on, is the time in the k-th period. At time k, where k is a natural number. For example... Figure 5D As shown, at the three-quarters of the cycle, the ultrasonic amplitude output by ultrasonic probes 2-1 and 2-3 reaches its maximum, and the direction of radiation is opposite to that at the one-quarter of the cycle. Meanwhile, the ultrasonic amplitude output by ultrasonic probes 2-2 and 2-4 gradually decreases to 0. At this time, the isobars are relatively dense at ultrasonic probes 2-1 and 2-3, and become sparser towards the outwards, exhibiting a divergent pattern. Afterwards, the ultrasonic amplitude output by ultrasonic probes 2-1 and 2-3 gradually decreases, while the ultrasonic amplitude output by ultrasonic probes 2-2 and 2-4 gradually increases. Therefore, the radiated sound field continues to move clockwise.

[0089] Figure 5E This is a schematic diagram of the isobars representing the instantaneous sound intensity at the end of the cycle. At the end of the cycle, the ultrasonic amplitude output by ultrasonic probes 2-1 and 2-3 gradually decreases to 0, while the ultrasonic amplitude output by ultrasonic probes 2-2 and 2-4 gradually increases to its maximum value. This completes one cycle, after which the radiated sound field will begin moving for the next cycle. In other words, the end of one cycle is the beginning of the next. Driven by this moving, periodic radiated sound field, the liquid can form a spiral fluid, propelling objects within the liquid in vertical motion while simultaneously increasing the tangential thrust.

[0090] Figure 6 This is a schematic diagram illustrating the application of the ultrasonic-driven liquid propulsion method provided in this application.

[0091] The excitation signal is used to excite multiple ultrasonic probes to generate ultrasonic waves, and is generally an AC sinusoidal electrical signal output by an ultrasonic drive circuit. The transducer module in the ultrasonic probe then converts the AC signal back into ultrasonic waves. This transducer module can also be called an energy conversion module. Since the excitation signal is periodic, as a preferred method, multiple ultrasonic probes can be physically staggered, allowing the same excitation signal to excite multiple probes. In this implementation, the dip distance between the first and second ultrasonic probes must correspond to a preset phase difference.

[0092] exist Figure 2 On this basis, Figure 6 The diagram shows a cross-section of a blood vessel when four ultrasound probes in the vertical direction are excited by the same excitation signal. It should be noted that the period of the output ultrasound wave is T, and the wavelength is S, where S = T × V, and V is the speed of ultrasound propagation in the liquid medium. Figure 6 In the diagram, ultrasound probes 2-1, 2-2, 2-3, and 2-4 are arranged in a ring within blood vessel 1. The phase difference between the ultrasound probes is a fixed phase difference, which is T / 4. If we consider the plane containing ultrasound probe 2-1 as having a downward displacement of 0, then ultrasound probe 2-2 is displaced by a distance of S / 4 from this plane, ultrasound probe 2-3 by a distance of S / 4 from the plane containing ultrasound probe 2-2, and ultrasound probe 2-4 by a distance of S / 4 from the plane containing ultrasound probe 2-3. For example, if the frequency of the ultrasound waves output by the ultrasound probes is 34 kHz and their propagation speed in the liquid medium is 340 m / s, then the ultrasound waves can propagate 1 cm in one cycle, meaning the wavelength of the ultrasound waves is 1 cm. If we denote the height of the plane containing ultrasound probe 2-1 as 0, then ultrasound probe 2-2 needs to be displaced by 0.25 cm, ultrasound probe 2-3 by 0.5 cm, and ultrasound probe 2-4 by 0.75 cm.

[0093] By lowering the ultrasound probes by a distance corresponding to the phase difference, four ultrasound probes can be excited using the same ultrasound drive circuit. Although the waveforms output by the four ultrasound probes are identical, due to their physically staggered arrangement, the isobaric pattern of the instantaneous sound intensity in this case is the same as that in the case where the probes are arranged in the same plane and the waveforms have a phase difference. Therefore, a moving, periodic radiating sound field can be generated using only one excitation signal, driving the blood 3 in blood vessel 1 to form a spiral fluid.

[0094] Using a physically staggered arrangement of ultrasound probes requires only one ultrasound drive circuit because the phase difference between the probes is generated by structural differences such as the probe's dip distance, rather than by differences in the electrical signals generated by the ultrasound drive circuit. In other words, using a physically staggered arrangement of ultrasound probes is a prerequisite for using only one ultrasound drive circuit.

[0095] In this approach, the ultrasonic drive circuit is relatively simple to implement, and fewer drive wires are required to connect the drive circuit to the ultrasonic probe, which is beneficial for miniaturization. Reducing the number of drive wires can decrease the risk of rejection by the human body and also prevent the risk of entanglement.

[0096] In one example, the ultrasound probes can also be arranged on the same plane. In this case, the ultrasound probes need to output ultrasound waves with a phase difference, so each ultrasound probe requires a different excitation signal. This approach requires multiple ultrasound drive circuits, each corresponding to one of the ultrasound probes.

[0097] This method is more flexible than the previous approach of using a single drive circuit to drive multiple ultrasonic probes. When it's necessary to change parameters such as the phase or period of the ultrasonic waves, only the corresponding ultrasonic drive circuit needs to be changed; the physical arrangement of the ultrasonic probes doesn't need to be altered. Furthermore, this method offers better redundancy. If one ultrasonic probe and its corresponding drive circuit fail, the remaining probes and their corresponding drive circuits can still function normally. In this case, only the phase of the ultrasonic waves output by the remaining probes needs to be adjusted—that is, the excitation signal of the remaining probes—to continue driving the liquid and generating a spiral fluid. However, this method requires more drive wires, which increases the risk of rejection and entanglement when used in the human body. Therefore, it is more suitable for scenarios such as ships where there is no risk of human injury. Assuming a ship uses a one-to-one correspondence between ultrasonic probes and drive circuits, if one drive circuit fails during navigation, the remaining circuits can still function normally, allowing the ship to continue sailing. If a ship uses a single drive circuit to drive multiple probes, then if that drive circuit fails, the ship will be unable to move forward.

[0098] Figure 7 This is a schematic diagram of the process for using ultrasonic waves to clear blockages in pipes, as provided in this application. Figure 7 This can be seen as a specific application of the above methods when clearing blockages in pipes.

[0099] S701, acquire excitation signal.

[0100] S701 can be seen as a specific example of S101. It should be noted that for a detailed description of ultrasound and ultrasound probes, please refer to the detailed description of S101, which will not be repeated here.

[0101] S702, under the excitation of the excitation signal, uses multiple ultrasonic probes to output multiple ultrasonic waves with phase differences, driving the liquid to generate a spiral fluid.

[0102] S702 can be seen as a specific example of S102.

[0103] The specific implementation process and principle of the above steps S701 and S702 can be found in [reference]. Figure 1 The detailed description of the embodiments will not be repeated here.

[0104] S703, the spiral fluid applies a forward spiral driving force and shear force to the blockage, causing the blockage to break up.

[0105] It should be noted that the spiral fluid exerts a forward spiraling force on the obstruction, which can also be called a vertical thrust force, and is a force along the direction of ultrasonic wave emission; the spiral fluid exerts a forward spiraling shear force on the obstruction, which can also be called a tangential thrust force, and is a force perpendicular to the direction of ultrasonic wave emission.

[0106] It should be understood that the pipelines mentioned here can be municipal pipelines, sewage pipelines, boiler pipelines, blood vessels, etc., and this application embodiment does not limit them. The corresponding blockages can be scale, calcium deposits, silt, garbage, coal ash and coke, lipid substances, etc., and this application embodiment also does not limit them.

[0107] Furthermore, when the method of this application utilizes ultrasound to form a spiral fluid to unclog blockages in pipes, the fluid includes, but is not limited to, water flow, blood flow, etc., and contains solid matter. For example, when the spiral fluid is applied to clean blockages such as dirt in municipal pipes, sewage pipes, boiler pipes, etc., the fluid corresponds to water flow. When the spiral fluid is applied to human blood vessels, the fluid corresponds to blood flow. This application does not limit the type of fluid.

[0108] Traditional methods using ultrasound to propel liquid can only generate a vertical force on blockages such as dirt on the inner wall of pipes when unclogging them. This means the fluid washes over the pipe wall in the direction of its movement, carrying the blockages out. The method provided in this application, however, utilizes the forward propulsion and shearing force of a spiral fluid to simultaneously wash over the inner wall of the pipe both laterally and longitudinally. This breaks down the blockages, reducing their size and making them easier for the spiral fluid to carry out of the pipe, thus achieving a clearing effect. Furthermore, if the inner wall of the pipe is not smooth, such as in a corrugated pipe, the spiral fluid generated by this method can effectively clear blockages adhering to the uneven inner wall, an effect that traditional methods cannot achieve.

[0109] Compared to using mechanical methods such as propellers to cut or grind blockages, using ultrasonic waves to generate a spiraling fluid with forward propulsion and shearing force to unclog pipes has the advantage of not damaging the pipes. Propellers, with their sharp blades and the cutting force generated by high-speed rotation, can easily damage pipe walls, especially those with uneven inner walls, such as corrugated pipes.

[0110] Figure 8 This is a schematic diagram illustrating the application of the ultrasonic method for clearing blockages in pipes provided in this application. (Example) Figure 8As shown, the inner wall of pipe 6 is covered with a blockage 7, represented by the black area. Four ultrasonic probes are arranged in a ring-shaped ultrasonic array structure. In a clockwise direction, the four ultrasonic probes are ultrasonic probe 8-1, ultrasonic probe 8-2, ultrasonic probe 8-3, and ultrasonic probe 8-4. After being excited by an excitation signal, they output ultrasonic waves with a phase difference, thus forming a moving, periodic radiating sound field. The instantaneous sound intensity difference of this radiating sound field generates pressure on the liquid, thereby forming a spiral fluid 9 in pipe 6. The spiral fluid 9 applies a helical forward vertical pushing force and a lateral shearing force to the blockage 7, causing the blockage 7 to break up, forming blockage fragments 7-1. The spiral fluid 9 carries the blockage fragments 7-1 out of pipe 6 by spiraling forward, thus achieving the unblocking and cleaning of pipe 6.

[0111] It should be noted that when using ultrasound to form a spiral fluid to unclog blockages in pipes, the pipe 6 here can be a municipal pipe, sewage pipe, boiler pipe, blood vessel, etc., and the corresponding blockage 7 includes, but is not limited to, scale, calcium deposits, silt, garbage, coal ash, coke, grease, etc. The method provided in this application breaks down the blockage by forming a spiral fluid, thereby achieving the effect of unclogging the pipe.

[0112] The methods of the embodiments of this application have been described above with reference to the accompanying drawings. It should be noted that all numerical values ​​appearing above are merely illustrative and do not constitute specific limitations on this application. It should also be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially, these steps are not necessarily executed in the order shown in the figures. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Furthermore, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the steps or stages of other steps. The apparatus of the embodiments of this application will now be described with reference to the accompanying drawings. For brevity, appropriate omissions will be made when describing the apparatus below; relevant content can be referred to in the above method description and will not be repeated.

[0113] Figure 9 This is a schematic diagram of the device for using ultrasound to drive liquid, as provided in this application.

[0114] like Figure 9As shown, the device 1000 includes an acquisition unit 1001 and a processing unit 1002. This device is capable of performing any of the methods described above for using ultrasound to propel liquid and for using ultrasound to clear blockages in pipes. For example, the acquisition unit 1001 can be used to perform step S101, and the processing unit 1002 can be used to perform step S102. As another example, the acquisition unit 1001 can be used to perform step S701, and the processing unit 1002 can be used to perform steps S702 and S703.

[0115] In one implementation, the device 1000 may further include a storage unit for storing data such as a preset phase difference and a sinking distance. This storage unit may be integrated into any one of the aforementioned units, or it may be a unit independent of all the aforementioned units.

[0116] Figure 10 This is a structural schematic diagram of the ultrasonic device provided in this application. Figure 10 As shown, the ultrasound device 3000 of this embodiment includes: at least one processor 3100 ( Figure 10 (Only one is shown) a processor, a memory 3200, and a computer program 3210 stored in the memory 3200 and executable on at least one processor 3100, wherein the processor 3100 executes the computer program 3210 to implement the steps in the above embodiments.

[0117] The processor 3100 can be a Central Processing Unit (CPU), or it can be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0118] In some embodiments, the memory 3200 may be an internal storage unit of the ultrasound device 3000, such as a hard disk or RAM of the ultrasound device 3000. In other embodiments, the memory 3200 may be an external storage device of the ultrasound device 3000, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the ultrasound device 3000. Furthermore, the memory 3200 may include both internal and external storage units of the ultrasound device 3000. The memory 3200 is used to store the operating system, applications, boot loader data, and other programs, such as program code for computer programs. The memory 3200 can also be used to temporarily store data that has been output or will be output.

[0119] It should be noted that the information interaction and execution process between the above-mentioned units / modules are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0120] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units is merely an example. In practical applications, the above functions can be assigned to different functional units or modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0121] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps described in the various method embodiments above.

[0122] This application provides a computer program product that, when run on a computer, can implement the methods described above.

[0123] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0124] It should be understood that specific details, such as particular system architectures and techniques, are set forth in the description for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will recognize that this application may be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted to avoid unnecessary detail from hindering the description of this application.

[0125] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0126] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0127] Furthermore, in the description of this application and the appended claims, the terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0128] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0129] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0130] In the embodiments provided in this application, it should be understood that the disclosed apparatus, computer equipment, and methods can be implemented in other ways. For example, the apparatus and computer equipment embodiments described above are merely illustrative. For instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0131] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method of propelling a liquid with ultrasonic waves, characterized by, The method comprises the following steps: obtaining an excitation signal, the excitation signal being used to excite a plurality of ultrasonic probes to generate ultrasonic waves, the plurality of ultrasonic probes being arranged in a ring-shaped ultrasonic array structure; under the excitation of the excitation signal, outputting a plurality of ultrasonic waves with phase difference by the plurality of ultrasonic probes, and driving liquid to generate a spiral fluid; the step of outputting a plurality of ultrasonic waves with phase difference by the plurality of ultrasonic probes and driving liquid to generate a spiral fluid comprises the following steps: outputting a plurality of ultrasonic waves with phase difference by the plurality of ultrasonic probes, and obtaining a moving acoustic radiation field according to the plurality of ultrasonic waves with phase difference, so as to generate a radiation pressure with vertical direction and tangential direction; based on the radiation pressure, driving liquid to generate a spiral fluid.

2. The method of claim 1, wherein, The phase difference between the ultrasonic wave generated by a first ultrasonic probe and the ultrasonic wave generated by a second ultrasonic probe in the plurality of ultrasonic probes is a preset phase difference, the first ultrasonic probe is any one of the plurality of ultrasonic probes, and the second ultrasonic probe is the ultrasonic probe adjacent to the first ultrasonic probe in clockwise or counterclockwise direction.

3. The method of claim 2, wherein, The preset phase difference is the ratio between the phase period of the ultrasonic wave generated by the plurality of ultrasonic probes and the number of ultrasonic probes.

4. The method of claim 2, wherein, The sinking distance between the first ultrasonic probe and the second ultrasonic probe corresponds to the preset phase difference.

5. The method of claim 1, wherein, Each of the plurality of ultrasonic probes comprises a transduction module, the transduction module being used to convert alternating current signal into mechanical wave; the step of outputting a plurality of ultrasonic waves with phase difference by the plurality of ultrasonic probes and driving liquid to generate a spiral fluid under the excitation of the excitation signal comprises the following steps: when the excitation signal is applied to the transduction module, the excitation signal is converted into the plurality of ultrasonic waves with phase difference by the transduction module, the excitation signal being a sine alternating current signal.

6. The method according to any one of claims 1 to 5, characterized in that, The excitation signal is obtained by using a plurality of ultrasonic wave driving circuits; each ultrasonic probe corresponds to an ultrasonic wave driving circuit.

7. The method according to any one of claims 1 to 5, characterized in that, The excitation signal is obtained by using the same ultrasonic wave driving circuit.

8. A method for clearing an obstruction in a pipe using ultrasonic waves, the method comprising: The method comprises the following steps: obtaining an excitation signal, the excitation signal being used to excite a plurality of ultrasonic probes to generate ultrasonic waves, the plurality of ultrasonic probes being arranged in a ring-shaped ultrasonic array structure; under the excitation of the excitation signal, outputting a plurality of ultrasonic waves with phase difference by the plurality of ultrasonic probes, and driving liquid to generate a spiral fluid; the spiral fluid applies a spiral forward driving force and a shearing force to the occlusion, so that the occlusion is broken.

9. An apparatus for propelling a liquid with ultrasonic waves, characterized by The method comprises the following steps: an obtaining unit is configured to obtain an excitation signal, the excitation signal being used to excite a plurality of ultrasonic probes to generate ultrasonic waves, the plurality of ultrasonic probes being arranged in a ring-shaped ultrasonic array structure; a processing unit is configured to output a plurality of ultrasonic waves with phase difference by the plurality of ultrasonic probes under the excitation of the excitation signal, and drive liquid to generate a spiral fluid; the processing unit is further configured to output a plurality of ultrasonic waves with phase difference by the plurality of ultrasonic probes, and obtain a moving acoustic radiation field according to the plurality of ultrasonic waves with phase difference, so as to generate a radiation pressure with vertical direction and tangential direction; based on the radiation pressure, drive liquid to generate a spiral fluid.

10. An apparatus for clearing an obstruction in a pipe using ultrasonic waves, comprising: The method comprises the following steps: An acquisition unit is configured to acquire an excitation signal, which is used to excite a plurality of ultrasonic probes to generate ultrasonic waves, and the plurality of ultrasonic probes are arranged in a ring-shaped ultrasonic array structure. A processing unit is configured to output a plurality of ultrasonic waves with phase differences by using the plurality of ultrasonic probes under the excitation of the excitation signal, and to push a liquid to generate a spiral fluid; the spiral fluid applies a forward pushing force and a shearing force to the occlusion, so that the occlusion is broken.

11. An ultrasound device comprising a memory and a processor and a computer program stored in the memory and executable on the processor, characterized in that, The processor implements the method in any one of claims 1-7 when executing the computer program; or implements the method in claim 8.

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