A multi-mode exciter and method of use

Abstract

The application belongs to the field of jet exciter, and particularly relates to a multi-mode exciter and a use method, which comprises an exciter body, an electrode group, a power supply and a vibrating diaphragm; the exciter body is provided with a mounting cavity, the vibrating diaphragm is arranged in the mounting cavity and divides the mounting cavity into two mutually isolated jet cavities, and each jet cavity is provided with a jet hole; each jet cavity is provided with a group of electrode groups, the electrode group comprises a moving electrode and a fixed electrode, the moving electrode is arranged on the vibrating diaphragm, and the fixed electrode is arranged on the inner wall of the exciter body; the power supply comprises a control power supply and a discharge power supply. The multi-mode exciter provided by the application combines the vibrating diaphragm jet and the two-electrode plasma jet, can greatly improve the jet strength, provide multiple jet modes and provide a vector control function, meet the requirements in a larger range, and improve the adaptability of the exciter.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of fluidic exciter, in particular to a multi-mode exciter and a method of using the same. BACKGROUND

[0002] Piezoelectric synthetic fluidic exciter and plasma fluidic exciter are commonly used fluidic exciters. The piezoelectric synthetic fluidic exciter is composed of a vibrating diaphragm and a fluidic chamber, and the fluidic chamber volume is changed by the vibrating diaphragm to form a fluidic jet. Generally, it is a cold fluidic jet and the fluidic jet intensity is generally small, but the structure is simple, the control is convenient, and the synthetic double fluidic exciter is more commonly used. The plasma fluidic exciter mainly sets two electrodes in the fluidic chamber, and the fluidic jet is formed by the discharge of the electrodes to generate plasma. It can form a high-intensity fluidic jet, but once the structure of the exciter is formed, the fluidic jet intensity is fixed and difficult to adjust and change.

[0003] In addition, the fluidic jet intensity and control precision of the two devices need to be improved. Specifically, the fluidic jet intensity of the vibrating diaphragm fluidic exciter is not enough, and the control precision is not enough, and the fluidic jet generated may have fluctuation and unstable effects. The fluidic jet intensity and control precision of the plasma fluidic exciter also have deficiencies, and the nozzle diameter and shape may affect the fluidic jet intensity and control precision, so these deficiencies need to be improved. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a multi-mode exciter with high-intensity and high-precision fluidic jet and a method of using the same.

[0005] The present application provides a multi-mode exciter, comprising an exciter body, an electrode group, a power supply and a vibrating diaphragm.

[0006] The exciter body is provided with a mounting cavity, and the vibrating diaphragm is arranged in the mounting cavity and divides the mounting cavity into two mutually isolated fluidic chambers. Each fluidic chamber is provided with a fluidic hole.

[0007] Each fluidic chamber is provided with a group of electrodes, which includes a moving electrode and a fixed electrode. The moving electrode is arranged on the vibrating diaphragm, and the fixed electrode is arranged on the inner wall of the exciter body.

[0008] The power supply includes a control power supply for driving and controlling the vibration or deformation of the vibrating diaphragm, and a discharge power supply for driving and controlling the discharge of the electrode group.

[0009] Further, the moving electrode and the fixed electrode are coaxial and perpendicular to the plane of the vibrating diaphragm.

[0010] Further, the moving electrode is arranged at the center of the vibrating diaphragm.

[0011] Further, the axis of the jet hole is perpendicular to the axis of the moving electrode and the fixed electrode and is coplanar.

[0012] Further, the two jet cavities and the two sets of electrodes are symmetrically arranged based on the diaphragm.

[0013] Further, the moving electrode is bonded to the diaphragm and is insulated from the diaphragm.

[0014] The application also provides a method for using the multi-mode exciter, using the multi-mode exciter; adjusting the control power source to control the vibration amplitude and frequency of the diaphragm; adjusting the discharge power source to control the discharge voltage and frequency of the electrode set; and adjusting the relative relationship between the control power source and the discharge power source to realize one or more of the four working modes.

[0015] In the first working mode, the control power source is an alternating current, the diaphragm expands the volume of one of the jet cavities, the electrode set in the jet cavity discharges, and the diaphragm starts to reduce the volume of the jet cavity after the discharge;

[0016] In the second working mode, the control power source is an alternating current, the diaphragm reduces the volume of one of the jet cavities, the electrode set in the jet cavity discharges, and the diaphragm starts to expand the volume of the jet cavity after the discharge;

[0017] In the third working mode, the control power source is an alternating current, the two jet cavities are in the first working mode and the second working mode, and the two sets of electrodes discharge at the same time, and the momentum of the jet through the two jet holes is controlled to realize vector control.

[0018] In the fourth working mode, the control power source is a direct current, the voltage of the control power source is adjusted to deform the diaphragm and fix the diaphragm at a position, the distance between the moving electrode and the fixed electrode of the two sets of electrodes is controlled, and the two sets of electrodes discharge alternately or synchronously.

[0019] The beneficial effects of this invention are that the multi-mode exciter provided combines a vibrating diaphragm jet and a two-electrode plasma jet. By placing one electrode in each electrode group on the vibrating diaphragm, the distance to the corresponding other electrode can be adjusted by the vibration of the diaphragm. This allows for a combination of volume-changing jets within the jet cavity and distance-controllable two-electrode plasma discharge. Compared to conventional vibrating diaphragm jets and two-electrode plasma jets, this method significantly improves jet intensity, provides multiple jet modes, and offers vector control functionality with minimal structural improvements and control complexity. It meets a wider range of requirements and enhances the exciter's adaptability. Furthermore, the control power supply can be adjusted between AC and DC. When using AC, the control power supply drives the vibrating diaphragm to reciprocate, thereby providing an auxiliary piezoelectric jet for higher precision. When switching to DC, it can be used to adjust the distance between the moving and fixed motors in the electrode group and the volume of the jet cavity, achieving different intensities of plasma jet control. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of the structure of the present invention in its first state;

[0021] Appendix Figure 2 This is a schematic diagram of the structure of the second state of the present invention.

[0022] In the figure, 1-exciter body; 11-jet cavity; 12-jet hole; 2-electrode group; 21-moving electrode; 22-fixed electrode; 3-vibrating diaphragm. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0025] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implying the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixing" and the like should be understood broadly, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection, or physical connection or wireless communication connection; can be directly connected, or indirectly connected through intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the scope of protection required by the present application.

[0028] As shown in the accompanying Figures 1-2 The present application provides a multi-mode exciter, which comprises an exciter body 1, an electrode group 2, a power supply and a vibrating diaphragm 3.

[0029] The exciter body 1 is provided with a mounting cavity, and the vibrating diaphragm 3 is arranged in the mounting cavity and divides the mounting cavity into two mutually isolated jet cavities 11. Each jet cavity 11 is provided with a jet hole 12; the jet hole 12 communicates the inside of the jet cavity 11 and the outside of the exciter body 1.

[0030] Each of the jet cavities 11 is provided with a group of electrode groups 2, and the electrode group 2 comprises a moving electrode 21 and a fixed electrode 22. The moving electrode 21 is arranged on the vibrating diaphragm 3 and moves by the vibration of the vibrating diaphragm 3. The fixed electrode 22 is arranged on the inner wall of the exciter body 1.

[0031] The power supply comprises a control power supply for driving and controlling the vibration or deformation of the vibrating diaphragm 3, and a discharge power supply for driving and controlling the discharge of the electrode group 2.

[0032] The multi-mode exciter provided by this invention combines a vibrating diaphragm jet and a two-electrode plasma jet. By placing one electrode in each electrode group 2 on the vibrating diaphragm 3, the distance to the corresponding other electrode 2 can be adjusted by the vibration of the vibrating diaphragm 3. This allows for the combination of a volume-changing jet within the jet cavity 11 and a distance-controllable two-electrode plasma discharge. Compared to conventional vibrating diaphragm jets and two-electrode plasma jets, this method significantly improves jet intensity, provides multiple jet modes, and offers vector control functionality with minimal structural improvements and control complexity. Furthermore, the control power supply can be adjusted to be either AC or DC. When AC is used, the control power supply drives the vibrating diaphragm 3 to reciprocate, thereby providing an auxiliary piezoelectric jet and a more precise jet. When switching to DC, the power supply can be used to adjust the distance between the moving motor 21 and the fixed motor 22 in the electrode group 2, as well as the volume of the jet cavity 11, to achieve different intensity plasma jet control.

[0033] Specifically, the present invention can achieve multiple operating modes by adjusting the relative relationship between the control power supply and the discharge power supply (the control power supply controls the vibration frequency of the diaphragm 3, the discharge power supply controls the discharge frequency of the electrode group 2, and controls the phase difference between the vibration frequency and the discharge frequency), thereby meeting a wider range of requirements and improving the adaptability of the exciter. For example, one or more of the following four operating modes are provided:

[0034] In one or more of the four operating modes, the discharge frequency and vibration frequency are consistent.

[0035] In operating mode one, the control power supply is AC. (Refer to...) Figure 1 In the right jet cavity 11, after the vibrating diaphragm 3 expands the volume of the right jet cavity 11, the electrode group 2 in the right jet cavity 11 discharges, and after the discharge, the vibrating diaphragm 3 begins to shrink the volume of the right jet cavity 11.

[0036] In operating mode one, electrode group 2 discharges at its maximum spacing. The plasma generated by electrode group 2, combined with the rapid reduction in the volume of jet cavity 11, produces a high-intensity combined jet that is ejected from the right jet hole 12. Furthermore, because electrode group 2 discharges when the volume of jet cavity 11 expands, the distance between the moving electrode 21 and the fixed electrode 22 in electrode group 2 is greater, which increases the discharge voltage of electrode group 2, providing a high-intensity plasma jet and further enhancing the intensity of the combined jet. Simultaneously, the left jet cavity 11 finishes jetting, its volume shrinks, and electrode group 2 stops working. The two jet cavities 11 operate alternately, forming alternating dual jets. Operating mode one is suitable for applications requiring high-intensity jet ejection.

[0037] In operating mode two, the control power supply is AC, see reference. Figure 2In the right jet chamber 11, the electrode group 2 in the right jet chamber 11 discharges after the diaphragm 3 reduces the volume of the right jet chamber 11, and the diaphragm 3 starts to expand the volume of the right jet chamber 11 after the discharge.

[0038] In the second working mode, the electrode group 2 discharges at the minimum distance, and only one electrode group 2 discharges at a time. The diaphragm 3 reduces the volume of the right jet chamber 11 while forming a jet from the right jet hole 12. Then, the right electrode group 2 discharges to form a plasma jet from the right jet hole 12. In addition, because the electrode group 2 discharges when the volume of the jet chamber 11 is reduced, the moving electrode 21 and the fixed electrode 22 in the electrode group 2 are close, which can reduce the discharge voltage of the electrode group 2 to provide a low-intensity plasma jet and a low-intensity thermal jet. At the same time, the left jet chamber 11 just finished the jet and quickly absorbs air into the left jet chamber 11 after expanding the volume. The electrode group 2 stops working, and the two jet chambers 11 work alternately to form alternating double jets. In the second working mode, the single jet time is long, and it is suitable for lower-intensity jet spraying applications.

[0039] In the third working mode, the control power supply is alternating current, and the two jet chambers are in the first working mode and the second working mode, and the two electrode groups 2 discharge at the same time. The momentum of the jet from the two jet holes 12 is controlled to achieve vector control. That is, by controlling the amplitude of the diaphragm 3 on the left and right, and / or controlling the voltage of the left and right electrode groups 2, the jet from the left and right jet holes 12 has different momentum ratios, and the two jets are deflected. In this working mode, the amplitude of the diaphragm 3 on the left and right and the voltage of the left and right electrode groups 2 can be combined to provide higher-precision vector control.

[0040] In the fourth working mode, the control power supply is direct current. By adjusting the voltage of the control power supply, the diaphragm 3 is deformed and fixed at a position, and then the distance between the moving electrode 21 and the fixed electrode 22 in the two electrode groups 2 is controlled. The two electrode groups 2 discharge alternately or synchronously.

[0041] In the fourth working mode, the distance between the moving electrode 21 and the fixed electrode 22 in the two electrode groups 2 can be adjusted by controlling the power supply, the distance between the two electrode groups 2 is complementary, when the distance of one group increases, the distance of the other group decreases, at the same time, the volume of the corresponding jet chamber 11 increases, and the gas in the jet chamber 11 is more, by increasing the voltage of the electrode group 2, a high-intensity plasma jet can be realized, at the same time, the volume of the corresponding jet chamber 11 decreases, and the gas in the jet chamber 11 is less, by reducing the voltage of the electrode group 2, a low-intensity plasma jet can be realized, and a plasma jet suitable for the distance between the electrode groups 2 and the volume of the jet chamber 11 can be provided.

[0042] When the discharges of the two electrode groups 2 are synchronized, a vector control function can be provided, when the discharges of the two electrode groups 2 are alternated, the different needs of the jet action environment can be adapted, for example, high-intensity jets and low-intensity jets are respectively applied to different surfaces, when the discharges of the two electrode groups 2 are selected, the changes of the jet action environment can be selected, for example, when the environment needs a high-intensity jet, the electrode group 2 with a large distance between the electrode groups 2 and a large volume of the jet chamber 11 is selected to perform a relatively high-voltage discharge, when the environment needs a low-intensity jet, the electrode group 2 with a small distance between the electrode groups 2 and a small volume of the jet chamber 11 is selected to perform a relatively low-voltage discharge, so as to have better adaptability and adjustment flexibility.

[0043] In addition, the electrode group 2 in the present application can select the discharge voltage according to the distance between the moving electrode 21 and the fixed electrode 22 to provide a discharge voltage corresponding to the distance, by selecting the appropriate phase difference between the vibration frequency and the discharge frequency, the intensity of the plasma jet can be adjusted without limit, and higher precision jet intensity control and jet vector control can be provided.

[0044] In one embodiment, the moving electrode 21 and the fixed electrode 22 are coaxial and perpendicular to the plane of the vibrating diaphragm 3, which facilitates the acquisition and control of the distance between the moving electrode 21 and the fixed electrode 22, thereby providing a more suitable discharge voltage, and at the same time, the discharge effect of the two electrodes can be improved.

[0045] In one embodiment, the moving electrode 21 is arranged at the center of the vibrating diaphragm 3, which can make the moving electrode 21 have a larger moving stroke and improve the selection of a larger range of plasma jet intensity.

[0046] In one embodiment, the axis of the jet hole 12 is perpendicular to the axis of the moving electrode 21 and the fixed electrode 22, in addition, the two jet holes 12 are consistent and can be close to each other, so that the two jets interact to realize the vector control function.

[0047] In one embodiment, two jet cavities 11 and two sets of electrode groups 2 are symmetrically arranged based on the diaphragm 3, facilitating the control of the strength, speed and time of the two jets.

[0048] In one embodiment, the mobile electrode 21 is bonded to the diaphragm 3, and the mobile electrode 21 is insulated from the diaphragm 3, so that the discharge power source does not affect the diaphragm 3.

[0049] The application also provides a method for using the multi-mode actuator, using the multi-mode actuator described above; adjusting the control power source to control the vibration amplitude and frequency of the diaphragm 3; controlling the discharge voltage and frequency of the electrode group 2 by controlling the discharge power source; and adjusting the relative relationship between the control power source and the discharge power source to realize one or more of the four working modes:

[0050] In working mode one, the control power source is alternating current, and after the diaphragm 3 expands the volume of one of the jet cavities 11, the electrode group 2 in the jet cavity 11 discharges, and after the discharge, the diaphragm 3 starts to reduce the volume of the jet cavity 11.

[0051] In working mode two, the control power source is alternating current, and after the diaphragm 3 reduces the volume of one of the jet cavities 11, the electrode group 2 in the jet cavity 11 discharges, and after the discharge, the diaphragm 3 starts to expand the volume of the jet cavity 11.

[0052] In working mode three, the control power source is alternating current, and the two jet cavities are in working mode one and working mode two, and the momentum of the jet ejected from the two jet holes 12 is controlled to realize vector control.

[0053] In working mode four, the control power source is direct current, the voltage of the control power source is adjusted to deform the diaphragm 3 and fix it at a position, and then the distance between the mobile electrode 21 and the fixed electrode 22 in the two sets of electrode groups 2 is controlled, and the two sets of electrode groups 2 are selectively discharged, or the two sets of electrode groups 2 are discharged alternately or synchronously.

[0054] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

Claims

1. A multi-mode exciter, characterized in that, It includes an exciter body (1), an electrode group (2), a power supply and a vibrating diaphragm (3). The exciter body (1) is provided with an installation cavity, and the vibrating diaphragm (3) is provided in the installation cavity and divides the installation cavity into two mutually isolated jet cavities (11). Each jet cavity (11) is provided with a jet hole (12). Each jet cavity (11) is provided with a set of electrode groups (2), the electrode group (2) includes a movable electrode (21) and a fixed electrode (22), the movable electrode (21) is disposed on the vibrating diaphragm (3), and the fixed electrode (22) is disposed on the inner wall of the exciter body (1); The power source includes a control power source for driving and controlling the vibration or deformation of the diaphragm (3) and a discharge power source for driving and controlling the discharge of the electrode assembly (2).

2. The multi-mode exciter as described in claim 1, characterized in that, The movable electrode (21) and the fixed electrode (22) are coaxial and perpendicular to the plane of the vibrating diaphragm (3).

3. The multi-mode exciter as described in claim 2, characterized in that, The movable electrode (21) is located at the center of the vibrating diaphragm (3).

4. The multi-mode exciter as described in claim 2, characterized in that, The axis of the jet hole (12) is perpendicular and coplanar with the axes of the moving electrode (21) and the fixed electrode (22).

5. The multi-mode exciter according to any one of claims 1-4, characterized in that, Two jet cavities (11) and two sets of electrode groups (2) are symmetrically arranged based on the vibrating diaphragm (3).

6. The multi-mode actuator as described in any one of claims 1-4, characterized in that, The movable electrode (21) is bonded to the vibrating diaphragm (3), and the movable electrode (21) and the vibrating diaphragm (3) are mutually insulated.

7. A method for using a multi-mode exciter, characterized in that, Using the multi-mode exciter as described in any one of claims 1-6; by adjusting the control power supply, the vibration amplitude and vibration frequency of the vibrating diaphragm (3) are controlled; by controlling the discharge power supply, the discharge voltage and discharge frequency of the electrode group (2) are controlled; by adjusting the relative relationship between the control power supply and the discharge power supply, one or more of the four working modes are achieved: In working mode one, the control power supply is AC. After the vibrating diaphragm (3) expands the volume of one of the jet chambers (11), the electrode group (2) in the jet chamber (11) discharges, and after the discharge, the vibrating diaphragm (3) begins to shrink the volume of the jet chamber (11). In working mode 2, the control power supply is AC. After the vibrating diaphragm (3) reduces the volume of one of the jet chambers (11), the electrode group (2) in the jet chamber (11) discharges, and after the discharge, the vibrating diaphragm (3) begins to expand the volume of the jet chamber (11). In working mode 3, the control power supply is AC, the two jet chambers are in working mode 1 and working mode 2, and the two sets of electrode groups (2) discharge simultaneously. Vector control is achieved by controlling the momentum of the jets ejected from the two jet holes (12). In working mode four, the control power supply is DC. By adjusting the voltage of the control power supply, the vibrating diaphragm (3) is deformed and fixed in one position, thereby controlling the distance between the moving electrode (21) and the fixed electrode (22) in the two sets of electrode groups (2). The two sets of electrode groups (2) can be discharged one of them, or the two sets of electrode groups (2) can be discharged alternately or synchronously.

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