An electric field direction adjustable partial electric field generating device

Abstract

This invention discloses an adjustable local electric field generating device. The main body of the electric field generating device is mounted on a displacement frame. First, second, third, and fourth electrode plates are all mounted within the main body frame, which is itself mounted on the displacement frame. The first, second, third, and fourth electrode plates are electrically connected to an external dual-channel DC voltage source, which is in turn electrically connected to two external continuously adjustable DC boost modules. This invention provides a convenient device for assembly, movement, and disassembly. The magnitude, position, and direction of the generated local electric field can be flexibly adjusted according to actual engineering needs. It can apply an adjustable local electric field in the direction of movement of a charged body, meeting the requirements for generating different local electric fields in different time domains. It is also very easy to operate and adjust, avoiding interference between the electric field generating device components and the movement of the charged body, and enabling precise control of the shape, velocity, and position of the charged body.

Description

Technical Field

[0001] This invention relates to an electric field generating device, specifically to a local electric field generating device with adjustable electric field direction. Background Technology

[0002] In experiments or industrial projects involving electric field control of charged bodies, it is often necessary to apply forces in different directions to the charged body using an electric field at different time points within the same spatial domain to achieve shape, velocity, and position control. However, common uniform electric field generating devices typically generate an electric field by adding a pair of electrode plates or an electrode array at the required location, which cannot meet the requirements for rapidly changing the position and direction of the electric field. Furthermore, in the field of electric jet motion (EHD), when an electric field in the same direction as the electric jet's motion is needed, a common practice is to connect the ground electrode and the positive electrode to the jet nozzle and the receiving plate, respectively. However, this connection method generates a very large electric field, which is insufficient for experiments with specific requirements to add a local electric field. Therefore, a composite field approach must be used to obtain a local electric field. Summary of the Invention

[0003] To address the problems existing in the background art, the present invention provides an adjustable local electric field generating device, aiming to meet the precise control of micrometer-level charged bodies in industrial applications.

[0004] The technical solution adopted in this invention is:

[0005] The local electric field generating device of the present invention includes an electric field generating device body and a displacement frame. The electric field generating device body is mounted on the displacement frame. The electric field generating device body includes a first electrode plate, a second electrode plate, a third electrode plate, a fourth electrode plate, and a main plate frame. The first electrode plate, the second electrode plate, the third electrode plate, and the fourth electrode plate are all mounted inside the main plate frame, and the main plate frame is mounted on the displacement frame. The first electrode plate, the second electrode plate, the third electrode plate, and the fourth electrode plate are electrically connected to an external dual-channel DC voltage source. The dual-channel DC voltage source is electrically connected to two external continuously adjustable DC boost modules.

[0006] The main body frame is mainly an octagonal shape formed by connecting eight rectangular plates in sequence, but is not limited to this. The first electrode plate, the second electrode plate, the third electrode plate and the fourth electrode plate are respectively arranged on the inner side of one of the rectangular plates in the main body frame. The first electrode plate, the second electrode plate, the third electrode plate and the fourth electrode plate are arranged in sequence, and the rectangular plates containing the first electrode plate, the second electrode plate, the third electrode plate and the fourth electrode plate are arranged alternately. The first electrode plate and the third electrode plate are arranged in parallel facing each other, and the second electrode plate and the fourth electrode plate are arranged in parallel facing each other.

[0007] In the main plate frame, two of the rectangular plates not directly opposite each other, where the first, second, third, or fourth electrode plates are not located, each have a circular through hole at its center. These two circular through holes are arranged parallel to each other, with their centers aligned on the same straight line. The outer surfaces of the other two rectangular plates not directly opposite each other in the main plate frame are mounted on a displacement frame. The electrode plate array is not limited to two pairs of electrode plates forming a composite field; multiple pairs of electrodes can also be used. The shape of the through holes in the main plate frame is not unique.

[0008] The first and third electrode plates are electrically connected to one channel of the dual-channel DC voltage source, and the second and fourth electrode plates are electrically connected to the other channel of the dual-channel DC voltage source.

[0009] One channel of the dual-channel DC voltage source is electrically connected to an external continuously adjustable DC boost module, and the other channel is electrically connected to another external continuously adjustable DC boost module. The two continuously adjustable DC boost modules can achieve multiple voltage division outputs, with the voltage linearly adjustable from 100V to 1000V, meeting the electric field strength requirements. The dual-channel DC voltage source can also use an AC power supply to form a local composite electric field.

[0010] The displacement frame includes two displacement support adjustment frames, with the main body frame installed between the two displacement support adjustment frames. Each displacement support adjustment frame includes a dovetail groove axial displacement platform and a dovetail groove horizontal displacement platform. The bottom end of the vertically arranged dovetail groove axial displacement platform is connected to the top surface of the horizontally arranged dovetail groove horizontal displacement platform. The bottom end of the dovetail groove axial displacement platform slides along the length of the dovetail groove horizontal displacement platform on the top surface of the dovetail groove horizontal displacement platform and is fixed in position by bolts. When the size of the main body of the electric field generating device is adjusted to suit different working conditions, the two dovetail groove axial displacement platforms can be used to adjust the two dovetail groove axial displacement platforms. The distance between the displacement platforms is adapted to the size of the main body of the electric field generator. In some working situations, such as test benches, the installation position of the device cannot be perfectly matched, and the position needs to be finely adjusted using two dovetail groove horizontal displacement platforms. The dovetail groove axial displacement platform is equipped with a vertically arranged gear and rack device. The outer sides of the two rectangular plates opposite to the first, second, third, or fourth electrode plates in the main plate frame are connected to the gear and rack devices on the two dovetail groove axial displacement platforms respectively through sliders. The gear and rack device makes the height of the main body of the electric field generator adjustable.

[0011] The first, second, third, and fourth electrode plates are made of conductive metal materials, such as brass, which have good conductivity.

[0012] The main frame is made of resin non-metallic insulating material.

[0013] The voltage of each channel of the dual-channel DC voltage source has a linearly adjustable range of 0-15V; the voltage of the continuously adjustable DC boost module has a linearly adjustable range of 100V-1000V.

[0014] A method for generating a local electric field with adjustable electric field direction using an electric field generating device:

[0015] Before operation, the electric field generating device is installed at a fixed position using two dovetail groove horizontal displacement platforms, and the main body of the electric field generating device is installed at a preset height using two dovetail groove axial displacement platforms. During operation, the electric field generating device operates in either a vertical or horizontal working mode, as detailed below:

[0016] When the electric field generating device is in vertical operating mode, adjust the main body of the device so that both circular through holes are on a horizontal plane, with one circular through hole directly above the other. At this time, the first and second electrode plates are positioned on either side of the upper circular through hole. Connect the first and second electrode plates to the positive terminals of the two channels of a dual-channel DC voltage source, ensuring the voltage values ​​are equal. Ground the third and fourth electrode plates. This causes the locally combined electric field generated within the main body of the device to be vertically distributed downwards. A charged body is then inserted through the upper circular through hole into this vertically distributed locally combined electric field. The charged body then exits through a circular through-hole located at the bottom; or the first and third electrode plates are electrically connected to the negative and positive terminals of the two channels of the dual-channel DC voltage source, respectively, and the second and fourth electrode plates are electrically connected to the negative and positive terminals of the other channel of the dual-channel DC voltage source, respectively. This allows the local composite electric field generated by the first, second, third, and fourth electrode plates within the main body of the electric field generator to be vertically distributed upwards. The positively charged body is then inserted into the vertically distributed local composite electric field generated within the main body of the electric field generator through a circular through-hole located at the top and exits through a circular through-hole located at the bottom. This decelerates the positively charged body, thereby intervening in the autonomous fusion process of the charged droplets.

[0017] When the electric field generating device is in horizontal operating mode, adjust the main body of the device so that both circular through holes are on a vertical plane, with one circular through hole in front of the other. At this time, the first and second electrode plates are on either side of the rear circular through hole. Connect the second and third electrode plates to the positive terminals of the two channels of the dual-channel DC voltage source, ensuring the voltage values ​​are the same. Ground the first and fourth electrode plates. The locally distributed composite electric field generated within the main body of the electric field generating device is horizontally distributed. When a charged body enters vertically from directly above or below the main body of the device, it is deflected, and the deflected direction follows the horizontal direction of the locally distributed composite electric field. The connection method of the electrode plates is not limited to this. For both vertical and horizontal operating modes, if different directions and magnitudes of the locally distributed composite electric field are required, adjustments can be made accordingly.

[0018] Before generating a local composite electric field, the main body of the electric field generating device connects two continuously adjustable DC boost modules to a dual-channel DC voltage source for voltage boosting. Then, the dual-channel DC voltage source is connected to the first electrode plate, the second electrode plate, the third electrode plate, and the fourth electrode plate. The main body of the electric field generating device generates a boosted local composite electric field, that is, generates a high-intensity local electric field, to meet the needs of generating a local electric field with a large electric field intensity.

[0019] The beneficial effects of this invention are:

[0020] The device of the present invention can obtain a local electric field between two sets of electrode plate arrays, the magnitude, direction and position of which can be adjusted according to specific circumstances. It meets the working requirements of generating different local electric fields in different time domains and is very easy to operate and adjust. At the same time, it avoids interference between the electric field generating device components and the movement of charged bodies, that is, it generates an axial electric field consistent with the direction of movement of charged bodies to avoid interference, and can achieve precise control over the shape, velocity and position of charged bodies. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the first working mode of the device of the present invention;

[0022] Figure 2 This is a schematic diagram of the second working mode of the device of the present invention;

[0023] Figure 3 This is a schematic diagram of the circuit connection of the device of the present invention;

[0024] In the figure: 1. First electrode plate, 2. Second electrode plate, 3. Third electrode plate, 4. Fourth electrode plate, 5. Main body of electric field generating device, 6. Axial displacement platform of dovetail groove, 7. Horizontal displacement platform of dovetail groove, 8. Dual-channel DC voltage source. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 and Figure 2 As shown, the local electric field generating device of the present invention includes an electric field generating device body 5 and a displacement frame. The electric field generating device body 5 is mounted on the displacement frame. The electric field generating device body 5 includes a first electrode plate 1, a second electrode plate 2, a third electrode plate 3, a fourth electrode plate 4, and a main plate frame. The first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4 are all mounted inside the main plate frame, and the main plate frame is mounted on the displacement frame. The first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4 are electrically connected to an external dual-channel DC voltage source 8. The dual-channel DC voltage source 8 is electrically connected to two external continuously adjustable DC boost modules.

[0027] The main frame is primarily an octagonal shape formed by connecting eight rectangular plates in sequence, but is not limited to this. The first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4 are respectively arranged on the inner side of one of the rectangular plates in the main frame. The first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4 are arranged sequentially, with the rectangular plates containing the first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4 arranged alternately. The first electrode plate 1 and the third electrode plate 3 are arranged facing each other in parallel, and the second electrode plate 2 and the fourth electrode plate 4 are arranged facing each other in parallel.

[0028] In the main plate frame, two of the rectangular plates not directly opposite each other (where the first electrode plate 1, second electrode plate 2, third electrode plate 3, or fourth electrode plate 4 are not located) each have a circular through hole at their center. These two circular through holes are arranged opposite each other in parallel, with their centers on the same straight line. The outer surfaces of the other two rectangular plates not directly opposite each other in the main plate frame are mounted on a displacement frame. The electrode plate array is not limited to two pairs of electrode plates forming a composite field; multiple pairs of electrodes can also be used. The shape of the through holes in the main plate frame is not unique. The first electrode plate 1 and the third electrode plate 3 are electrically connected to one channel of the dual-channel DC voltage source 8, and the second electrode plate 2 and the fourth electrode plate 4 are electrically connected to the other channel of the dual-channel DC voltage source 8. Figure 3 As shown.

[0029] One channel of the dual-channel DC voltage source 8 is electrically connected to an external continuously adjustable DC boost module, and the other channel of the dual-channel DC voltage source 8 is electrically connected to another external continuously adjustable DC boost module. The two continuously adjustable DC boost modules can achieve multiple voltage division outputs, with the voltage linearly adjustable from 100V to 1000V, meeting the electric field strength requirements. The dual-channel DC voltage source 8 can also use an AC power supply to form a local composite electric field.

[0030] The displacement frame includes two displacement support adjustment frames, with the main plate frame installed between the two displacement support adjustment frames. Each displacement support adjustment frame includes a dovetail groove axial displacement platform 6 and a dovetail groove horizontal displacement platform 7. The bottom end of the vertically arranged dovetail groove axial displacement platform 6 is connected to the top surface of the horizontally arranged dovetail groove horizontal displacement platform 7. The bottom end of the dovetail groove axial displacement platform 6 slides along the length of the dovetail groove horizontal displacement platform 7 on the top surface of the dovetail groove horizontal displacement platform 7 and is fixed in position by bolts. When the size of the electric field generating device main body 5 is adjusted to suit different working conditions, the axial displacement of the two dovetail grooves can be adjusted through the two dovetail groove horizontal displacement platforms 7. The distance between platforms 6 is adapted to the size of the main body 5 of the electric field generator. In some working situations, such as test benches, the installation position of the device cannot be perfectly matched, and the position needs to be finely adjusted using two dovetail groove horizontal displacement platforms 7. The dovetail groove axial displacement platform 6 is equipped with a vertically arranged gear and rack device. The outer sides of the two rectangular plates opposite to the first electrode plate 1, second electrode plate 2, third electrode plate 3 or fourth electrode plate 4 in the main plate frame are connected to the gear and rack devices on the two dovetail groove axial displacement platforms 6 respectively through sliders. The gear and rack device makes the height of the main body 5 of the electric field generator adjustable.

[0031] The first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4 are made of conductive metal materials, such as brass, which have good conductivity; the main board frame is made of resin non-metallic insulating material. The voltage of each channel of the dual-channel DC voltage source 8 has a linearly adjustable range of 0-15V; the voltage of the continuously adjustable DC boost module has a linearly adjustable range of 100V-1000V.

[0032] A method for generating a local electric field with adjustable electric field direction using an electric field generating device:

[0033] Before operation, the electric field generating device is installed in a fixed position using two dovetail horizontal displacement platforms 7, and the main body 5 of the electric field generating device is installed at a preset height using two dovetail axial displacement platforms 6. During operation, the electric field generating device operates in either a vertical or horizontal working mode, as detailed below:

[0034] When the electric field generating device is in vertical operating mode, the main body 5 of the electric field generating device is adjusted so that both circular through holes of the main body 5 are on the horizontal plane, with one circular through hole directly above the other. At this time, the first electrode plate 1 and the second electrode plate 2 are on both sides of the upper circular through hole. By electrically connecting the first electrode plate 1 and the second electrode plate 2 to the positive terminals of the two channels of the dual-channel DC voltage source 8 respectively, and ensuring that the voltage values ​​are the same, and grounding the third electrode plate 3 and the fourth electrode plate 4, the local composite electric field generated by the first electrode plate 1 and the second electrode plate 2 within the main body 5 of the electric field generating device is vertically distributed downwards. A charged body is then inserted through the upper circular through hole into the vertically distributed local composite electric field generated within the main body 5 of the electric field generating device. The charged body then exits through a circular through-hole located at the bottom; or the first electrode plate 1 and the third electrode plate 3 are electrically connected to the negative and positive terminals of the DC voltage sources of the two channels of the dual-channel DC voltage source 8, respectively, and the second electrode plate 2 and the fourth electrode plate 4 are electrically connected to the negative and positive terminals of the DC voltage source of the other channel of the dual-channel DC voltage source 8, respectively. This allows the local composite electric field generated by the first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4 within the main body 5 of the electric field generating device to be vertically distributed upwards. The positively charged body is then inserted into the vertically distributed local composite electric field generated within the main body 5 of the electric field generating device through a circular through-hole located at the top and exits through a circular through-hole located at the bottom. This achieves deceleration of the positively charged body, thereby intervening in the autonomous fusion process of the charged droplets.

[0035] When the electric field generating device is in horizontal working mode, adjust the main body 5 of the electric field generating device so that both circular through holes of the main body 5 are on a vertical plane, with one circular through hole located in front of the other. At this time, the first electrode plate 1 and the second electrode plate 2 are on both sides of the circular through hole located at the rear. Connect the second electrode plate 2 and the third electrode plate 3 to the positive terminals of the two channels of the dual-channel DC voltage source 8 with the same voltage value. Ground the first electrode plate 1 and the fourth electrode plate 4. The local composite electric field generated in the main body 5 is horizontally distributed. When a charged body enters the horizontally distributed local composite electric field generated in the main body 5 vertically from directly above or below the main body 5, the charged body will deflect, and the direction of the deflection will be along the horizontal direction of the horizontally distributed local composite electric field. The connection method of the electrode plates is not limited to this. For both vertical and horizontal working modes, if different directions and sizes of local composite electric fields are required, they can be adjusted and changed accordingly according to actual needs.

[0036] Before generating the local composite electric field, the main body 5 of the electric field generating device connects two continuously adjustable DC boost modules to a dual-channel DC voltage source 8 for boosting. Then, the dual-channel DC voltage source 8 is connected to the first electrode plate 1, the second electrode plate 2, the third electrode plate 3, and the fourth electrode plate 4. The main body 5 of the electric field generating device generates the boosted local composite electric field, that is, generates a high-intensity local electric field, in order to meet the needs of generating a local electric field with a large electric field intensity.

[0037] The device of this invention consists of two pairs of electrode plates arranged alternately, with the center line at a 90° angle. Depending on the control scheme, two electrode plates are grounded, while the other two are connected to the same or different voltages. The main body of the electric field generating device is octagonal, formed by cutting four 4mm*4mm right-angled triangles from a 160mm*160mm insulating plate. The thickness is 100mm. A 60mm diameter circle is carved out in the middle of two opposite 80mm sides to allow the charged body to pass through; four threaded holes are pre-drilled on each of the two perpendicular opposite sides for fixation. The overall thickness is 3mm.

[0038] The dual-channel DC power supply can simultaneously provide two adjustable DC regulated power supplies connected to the electrode plate to generate a uniform electric field. The boost module is designed because the initial dual-channel DC voltage device can only provide a DC voltage of 0-15V. Given the relatively small size of the electric field, boosting is sometimes necessary to meet basic charging, deflection, or acceleration / deceleration requirements.

[0039] In situations where it is necessary to use electric fields in different directions in one space and another axis to achieve precise control over the shape and spatial orientation of charged bodies, this device can also be assembled and stacked while satisfying electrostatic shielding requirements.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A local electric field generating device with adjustable electric field direction, characterized in that: The device includes a main body (5) for generating an electric field and a displacement frame. The main body (5) for generating an electric field is mounted on the displacement frame. The main body (5) for generating an electric field includes a first electrode plate (1), a second electrode plate (2), a third electrode plate (3), a fourth electrode plate (4), and a main plate frame. The first electrode plate (1), the second electrode plate (2), the third electrode plate (3), and the fourth electrode plate (4) are all mounted inside the main plate frame, and the main plate frame is mounted on the displacement frame. The first electrode plate (1), the second electrode plate (2), the third electrode plate (3), and the fourth electrode plate (4) are electrically connected to an external dual-channel DC voltage source (8). The dual-channel DC voltage source (8) is electrically connected to two external DC continuously adjustable boost modules. The main body frame is mainly an octagonal shape formed by connecting eight rectangular plates in sequence. The first electrode plate (1), the second electrode plate (2), the third electrode plate (3) and the fourth electrode plate (4) are respectively arranged on the inner side of one of the rectangular plates in the main body frame. The first electrode plate (1), the second electrode plate (2), the third electrode plate (3) and the fourth electrode plate (4) are arranged in sequence. The rectangular plates where the first electrode plate (1), the second electrode plate (2), the third electrode plate (3) and the fourth electrode plate (4) are located are arranged alternately. The first electrode plate (1) and the third electrode plate (3) are arranged in parallel facing each other, and the second electrode plate (2) and the fourth electrode plate (4) are arranged in parallel facing each other. The main plate frame has two rectangular plates that are not directly opposite each other and have circular through holes in their centers. The two circular through holes are arranged in parallel and their centers are on the same straight line. The outer sides of the other two rectangular plates that are not directly opposite each other and have circular through holes are installed on the displacement frame.

2. The adjustable local electric field generating device according to claim 1, characterized in that: The first electrode plate (1) and the third electrode plate (3) are electrically connected to one channel of the dual-channel DC voltage source (8), and the second electrode plate (2) and the fourth electrode plate (4) are electrically connected to the other channel of the dual-channel DC voltage source (8).

3. The adjustable local electric field generating device according to claim 1, characterized in that: One channel of the dual-channel DC voltage source (8) is electrically connected to an external continuously adjustable DC boost module, and the other channel of the dual-channel DC voltage source (8) is electrically connected to another external continuously adjustable DC boost module.

4. The adjustable local electric field generating device according to claim 1, characterized in that: The displacement frame includes two displacement support adjustment frames, and the main plate frame is installed between the two displacement support adjustment frames; each displacement support adjustment frame includes a dovetail groove axial displacement platform (6) and a dovetail groove horizontal displacement platform (7). The bottom end of the vertically arranged dovetail groove axial displacement platform (6) is connected to the top surface of the horizontally arranged dovetail groove horizontal displacement platform (7). The bottom end of the dovetail groove axial displacement platform (6) slides along the length direction of the dovetail groove horizontal displacement platform (7) on the top surface of the dovetail groove horizontal displacement platform (7) and is fixed in position by bolts; the dovetail groove axial displacement platform (6) is provided with a vertically arranged gear rack device. The outer sides of the other two rectangular plates opposite to the first electrode plate (1), second electrode plate (2), third electrode plate (3) or fourth electrode plate (4) in the main plate frame are connected to the gear rack devices on the two dovetail groove axial displacement platforms (6) respectively by sliders.

5. The adjustable local electric field generating device according to claim 1, characterized in that: The first electrode plate (1), the second electrode plate (2), the third electrode plate (3), and the fourth electrode plate (4) are made of conductive metal material; The main frame is made of resin non-metallic insulating material.

6. The adjustable local electric field generating device according to claim 1, characterized in that: The voltage of each channel of the dual-channel DC voltage source (8) is linearly adjustable from 0 to 15V; the voltage of the DC continuously adjustable boost module is linearly adjustable from 100V to 1000V.

7. The method for generating a local electric field with adjustable electric field direction using the electric field generating device according to any one of claims 1-6, characterized in that: Before operation, the electric field generating device is installed at a fixed position using two dovetail groove horizontal displacement platforms (7), and the main body (5) of the electric field generating device is installed at a preset height using two dovetail groove axial displacement platforms (6). The electric field generating device operates in either a vertical or horizontal working mode, as follows: When the electric field generating device is in vertical working mode, adjust the main body (5) of the electric field generating device so that both circular through holes of the main body (5) are on the horizontal plane, with one circular through hole located directly above the other. At this time, the first electrode plate (1) and the second electrode plate (2) are on both sides of the circular through hole located above. By electrically connecting the first electrode plate (1) and the second electrode plate (2) to the positive terminals of the two channels of the dual-channel DC voltage source (8) with the same voltage value, and grounding the third electrode plate (3) and the fourth electrode plate (4), the local composite electric field generated by the first electrode plate (1) and the second electrode plate (2) in the main body (5) of the electric field generating device is distributed vertically downward. The charged body is then inserted into the main body (5) of the electric field generating device through the circular through hole located above. The generated vertically downward distributed local composite electric field then exits through a circular through-hole located below; or the first electrode plate (1) and the third electrode plate (3) are electrically connected to the negative and positive terminals of the DC voltage sources of the two channels of the dual-channel DC voltage source (8), respectively, and the second electrode plate (2) and the fourth electrode plate (4) are electrically connected to the negative and positive terminals of the DC voltage source of the other channel of the dual-channel DC voltage source (8), so that the local composite electric field generated by the first electrode plate (1), the second electrode plate (2), the third electrode plate (3) and the fourth electrode plate (4) in the electric field generating device body (5) is vertically upward distributed, and the positively charged body enters the vertically upward distributed local composite electric field generated in the electric field generating device body (5) through a circular through-hole located above and then exits through a circular through-hole located below; When the electric field generating device is in horizontal working mode, adjust the main body (5) of the electric field generating device so that both circular through holes of the main body (5) are on the vertical plane, with one circular through hole located in front of the other circular through hole. At this time, the first electrode plate (1) and the second electrode plate (2) are on both sides of a circular through hole located behind. Connect the second electrode plate (2) and the third electrode plate (3) to the positive terminals of the two channels of the dual-channel DC voltage source (8) and the voltage values ​​are the same. Ground the first electrode plate (1) and the fourth electrode plate (4). The local composite electric field generated in the main body (5) of the electric field generating device is horizontally distributed. When the charged body enters the horizontally distributed local composite electric field generated in the main body (5) of the electric field generating device vertically from directly above or directly below the main body (5), the charged body is deflected, and the direction after deflection is along the horizontal direction of the horizontally distributed local composite electric field.

8. The method for generating a local electric field with adjustable electric field direction using the electric field generating device according to claim 7, characterized in that: Before generating a local composite electric field, the main body (5) of the electric field generating device generates a local composite electric field by connecting two continuously adjustable DC boost modules to a dual-channel DC voltage source (8) for boosting, and then connecting the dual-channel DC voltage source (8) to the first electrode plate (1), the second electrode plate (2), the third electrode plate (3) and the fourth electrode plate (4).

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