A spinning electrode nozzle for static elimination
By setting a spiral airflow channel inside the electrode nozzle and utilizing the design of the spiral guide plate, the problem of uneven ion delivery range and distribution of the ion air bar is solved, achieving a wider electrostatic elimination range and a faster electrostatic elimination speed.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ANPING STATIC TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-31
AI Technical Summary
The existing airway and discharge structures of ion bar cannot effectively expand the ion transport range and static electricity elimination range, resulting in a limited static electricity elimination distance and uneven distribution of positive and negative ions, which affects the static electricity elimination effect.
A spiral guide air channel composed of an array of double spiral guide vanes is set inside the electrode nozzle to form a spiral diffusion swirling ion gas flow. The twist angle and phase angle misalignment design of the spiral guide vanes enhances the ion transport efficiency and uniform distribution.
It achieves a wider electrostatic elimination range and better ion balance performance, reduces airflow pressure loss, and improves electrostatic elimination speed and stability.
Smart Images
Figure CN224583366U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of static electricity elimination, and in particular relates to an electrode nozzle for an ion air bar. Background Technology
[0002] An ion bar (also known as an ion bar) is a static eliminator that uses compressed airflow to eliminate static electricity over a long distance. The shape of the output airflow directly affects the static elimination effect, such as the static elimination distance and the static elimination range.
[0003] With the upgrading of industry development, higher performance requirements have been put forward for ion air bars (longer static elimination distance and wider static elimination range). However, the existing air channel structure and discharge structure of ion air bars cannot effectively meet market demand. There is an urgent need to develop an ion air bar that is suitable for a wider static elimination range.
[0004] The structures of existing ion air bar electrode nozzles can be referenced in the following patent documents:
[0005] 1) The invention patent "Electrostatic Removal Device" with an authorization announcement date of January 20, 2016 and authorization announcement number CN103477720B;
[0006] 2) The invention patent application "Discharge Electrode Socket" with publication date of November 18, 2009 and publication number CN 101584254A;
[0007] 3) The invention patent "Static Eliminator" with the authorization announcement date of August 14, 2013 and authorization announcement number CN101472380B.
[0008] Among them, the invention patent "Electrostatic Removal Device" with authorization announcement number CN103477720B has the following structural features of the electrode nozzle and needle seat (see Figure 8 in its specification): the air passage directly contacts and wraps around the electrode needle, the airflow flows out along the electrode needle through the air passage, and the outgoing airflow is in a straight shot.
[0009] In the invention patent application "Discharge Electrode Socket" with publication number CN 101584254A, the structural features of the electrode nozzle and needle seat (see Figure 1 in its specification) are: the air passage does not directly or completely contact or wrap the electrode needle, but is set on both sides of the electrode needle, and the airflow flows out from both sides of the electrode needle through the air passage, and the outflow of air from each air passage hole is in a straight shape.
[0010] The invention patent "Static Eliminator" with authorization announcement number CN101472380B features an electrode nozzle and needle holder (see Figure 18 in its specification) with the following structural characteristics: it combines the two air passage structures mentioned above. At the axial center of the electrode nozzle and needle holder, the air passage directly contacts and wraps around the electrode needle, and the airflow flows out along the electrode needle through the air passage; while the auxiliary air passages located on both sides and around the electrode needle allow the airflow to flow out from both sides and around the electrode needle (see auxiliary air holes 37 in Figure 4 in its specification), and the outgoing airflow from each air passage hole is in a straight line.
[0011] In practical use, the above-mentioned existing technical solutions have been found to have the following technical defects:
[0012] 1) The airway structure makes the output airflow pattern straight. Even with the auxiliary airway, the diffusion range is still very limited, resulting in a limited ion transport range and ultimately a small electrostatic elimination range.
[0013] 2) The output direct airflow cannot effectively achieve a uniform distribution of positive and negative ions in the air, resulting in unsatisfactory ion balance performance.
[0014] Improving the airflow and discharge structures of ion bars to expand their ion transport range, thereby increasing their static elimination range and ion transport efficiency, enabling ions to be transported to farther distances more quickly and increasing the static elimination distance, is a practical technical problem that urgently needs to be solved in the product design and manufacturing of ion bars. Utility Model Content
[0015] The purpose of this invention is to provide a swirling-jet electrode nozzle for static electricity elimination. It features a spiral-shaped airflow channel composed of an array of double-helix guide vanes within the nozzle, generating a spiral-diffusion, swirling-jet ion flow at the nozzle's airflow output end. This achieves a wider static electricity elimination range and superior ion balance performance.
[0016] The technical solution of this utility model is: to provide a rotary electrode nozzle for static electricity elimination, including an electrode base and an electrode needle located therein, characterized in that:
[0017] A circular cylindrical structure is set at the center of the electrode seat shaft, and an electrode needle is placed in the inner space. The electrode needle is embedded in the electrode seat as a whole.
[0018] Inside the electrode holder, along the longitudinal direction of the electrode needle, a spiral airflow channel composed of double spiral guide vanes is set.
[0019] The spiral airflow channel is located on the outer periphery of the annular cylindrical structure;
[0020] The double-helix guide vane includes a first pair of helical guide vanes with a twist angle of A degrees, a second pair of helical guide vanes with a twist angle of B degrees, and a third pair of helical guide vanes with a twist angle of C degrees;
[0021] The first pair of spiral guide vanes, the second pair of spiral guide vanes, and the third pair of spiral guide vanes are arranged sequentially from the air inlet end to the air outlet end of the electrode nozzle.
[0022] The rotary electrode nozzle used for static elimination adopts a spiral airflow channel structure composed of double spiral guide vanes, forming and outputting a spiral diffusion swirling ion jet at the gas outlet end of the electrode seat.
[0023] Specifically, the torsion angle A is less than the torsion angle B; and the torsion angle B is less than the torsion angle C.
[0024] Furthermore, the twist angle is A degrees, which is 30°; the twist angle is B degrees, which is 45°; and the twist angle is C degrees, which is 60°.
[0025] Specifically, the first pair of spiral guide vanes, the second pair of spiral guide vanes, and the third pair of spiral guide vanes are arranged sequentially from the air inlet end to the air outlet end of the electrode nozzle, and are not connected to each other; with the center line of the electrode nozzle as the center, the three pairs of spiral guide vanes are staggered with a spiral phase angle of 90° between them.
[0026] Alternatively, the first pair of spiral guide vanes, the second pair of spiral guide vanes, and the third pair of spiral guide vanes are arranged sequentially from the air inlet end to the air outlet end of the electrode nozzle, connected end to end or arranged continuously between each other, without any rotational angle misalignment.
[0027] Specifically, the positional relationship between the electrode needle and its annular column located at the central axis of the electrode holder and the third pair of spiral guide vanes is as follows: the end of the third pair of spiral guide vanes extends outward or beyond the tip of the electrode needle, extending all the way to the structural edge of the air outlet end of the electrode holder, and placing the tip of the electrode needle inside the space enclosed by the spiral guide vanes and / or inside the air passage formed by the spiral guide vanes and the electrode holder.
[0028] Furthermore, the tip of the electrode needle extends out of the annular column.
[0029] Specifically, a snap-fit structure is provided on the circular protrusion located on the upper half of the electrode holder to realize the installation and fixation between the circular protrusion on the upper half of the electrode holder and the ion wind rod.
[0030] Specifically, the swirling jet consists of two axisymmetric airflows that rotate and are ejected outward through an air passage composed of double helical guide vanes, while simultaneously driving the surrounding airflow to rotate and be ejected outward together.
[0031] Furthermore, the torsion angle of the spiral guide vane is directly proportional to the exit velocity, exit angle, and hemispherical exit surface vortex of the two spiral airflows.
[0032] Compared with the prior art, the advantages of this utility model are:
[0033] 1. The technical solution of this utility model does not require the setting of an auxiliary air channel. By utilizing the spiral diffusion jet output by the nozzle itself, more positive and negative ions can be delivered to a wider range more quickly, thereby increasing the static electricity elimination range.
[0034] 2. The technical solution of this utility model utilizes the swirling jet output by the nozzle itself to naturally "stir" and "mix" the positive and negative ions generated at the tip of the electrode needle and then transport them to the surface of the object, effectively improving the ion balance performance.
[0035] 3. The technical solution of this utility model, by setting an array of spiral guide vanes with staggered spiral phase angles, can reduce the pressure loss of the nozzle airflow while ensuring a wide swirling range (larger ejection angle), thereby reducing compressed gas energy consumption and mechanical damage of compressed gas to the ion fan bar and nozzle.
[0036] 4. The technical solution of this utility model, by adjusting the positional relationship between the electrode needle and its annular column located at the central axis of the electrode seat and the third pair of spiral guide vanes, can enhance the overall vortex intensity of the outgoing airflow, so as to facilitate the mutual mixing and uniform distribution of positive and negative ions, thereby driving and expanding the transport range of positive and negative ions, and further expanding the static elimination range. This allows the tip of the electrode needle to contact the spiral airflow earlier, so as to facilitate the early formation of mutual mixing and uniform distribution of positive and negative ions, and improve the stability of static elimination performance. Attached Figure Description
[0037] Figure 1-1 This is a schematic diagram of the electrode nozzle shaft side of this technical solution;
[0038] Figure 1-2 This is another axial view of the electrode nozzle in this technical solution;
[0039] Figure 2 This is a perspective view of the electrode nozzle of this technical solution;
[0040] Figure 3-1 This is a front view of the electrode nozzle in this technical solution;
[0041] Figure 3-1-a This is a sectional view of the main view of the electrode nozzle in this technical solution;
[0042] Figure 3-2 This is a side view of the electrode nozzle in this technical solution;
[0043] Figure 3-2-a This is a cross-sectional view of the side view of the electrode nozzle in this technical solution;
[0044] Figure 4-1 This is a perspective view of the electrode nozzle in Comparative Embodiment 1 of this technical solution;
[0045] Figure 4-2 This is a perspective view of the electrode nozzle in Comparative Embodiment 2 of this technical solution;
[0046] Figure 4-3 This is a perspective view of the electrode nozzle in Comparative Embodiment 3 of this technical solution;
[0047] Figure 4-4 This is a perspective view of the electrode nozzle in Comparative Embodiment 4 of this technical solution;
[0048] Figure 4-5 This is a perspective view of the electrode nozzle in Comparative Embodiment 5 of this technical solution;
[0049] Figure 4-6 This is a perspective view of the electrode nozzle in Comparative Embodiment 6 of this technical solution;
[0050] Figure 5-1 To and Figure 2 , Figure 3-1 Corresponding simulation structure diagram;
[0051] Figure 5-2 To and Figure 2 , Figure 3-1 The corresponding simulation structure airflow inlet boundary diagram;
[0052] Figure 5-3 To and Figure 2 , Figure 3-1 The corresponding simulation structure airflow outlet boundary diagram;
[0053] Figure 6-1 To and Figure 2 , Figure 3-1 The corresponding simulated airflow velocity distribution diagram;
[0054] Figure 6-2 To and Figure 2 , Figure 3-1 Corresponding simulated structural airflow field wall pressure distribution diagram;
[0055] Figure 6-3 To and Figure 2 , Figure 3-1 Corresponding simulation diagram of the normal velocity distribution of the external air hemispherical interface / exit of the airflow field;
[0056] Figure 6-3-1 To and Figure 2 , Figure 3-1Corresponding simulation diagram of the airflow field at the external air hemispherical interface / exit velocity distribution.
[0057] Figure 6-4 To and Figure 2 , Figure 3-1 Corresponding simulated structural airflow field external air hemispherical interface / exit vorticity distribution diagram
[0058] Figure 7-1 To and Figure 4-1 Corresponding simulation diagram of the normal velocity distribution of the external air hemispherical interface / exit of the airflow field;
[0059] Figure 7-2 To and Figure 4-2 Corresponding simulation diagram of the normal velocity distribution of the external air hemispherical interface / exit of the airflow field;
[0060] Figure 7-3 To and Figure 4-3 Corresponding simulation diagram of the normal velocity distribution of the external air hemispherical interface / exit of the airflow field;
[0061] Figure 7-4 To and Figure 4-4 Corresponding simulation diagram of the normal velocity distribution of the external air hemispherical interface / exit of the airflow field;
[0062] Figure 7-5 To and Figure 4-5 Corresponding simulation diagram of the normal velocity distribution of the external air hemispherical interface / exit of the airflow field;
[0063] Figure 7-6 To and Figure 4-6 Corresponding simulation diagram of the normal velocity distribution of the external air hemispherical interface / exit of the airflow field;
[0064] Figure 8-1 To and Figure 4-1 Corresponding simulation diagram of the airflow field at the external air hemispherical interface / exit velocity distribution.
[0065] Figure 8-2 To and Figure 4-2 Corresponding simulation diagram of the airflow field at the external air hemispherical interface / exit velocity distribution.
[0066] Figure 8-3 To and Figure 4-3 Corresponding simulation diagram of the airflow field at the external air hemispherical interface / exit velocity distribution.
[0067] Figure 8-4 To and Figure 4-4 Corresponding simulation diagram of the airflow field at the external air hemispherical interface / exit velocity distribution.
[0068] Figure 8-5 To and Figure 4-5Corresponding simulation diagram of the airflow field at the external air hemispherical interface / exit velocity distribution.
[0069] Figure 8-6 To and Figure 4-6 Corresponding simulation diagram of the airflow field at the external air hemispherical interface / exit velocity distribution.
[0070] Figure 9 Comparison chart of maximum wall pressure data at the air inlet end of electrode nozzles with different structures;
[0071] Figure 10 Comparison of external air hemispherical interface / exit velocity data for electrode nozzles with different structures;
[0072] Figure 11 Comparison of external air hemispherical interface / outlet vorticity data for electrode nozzles with different structures;
[0073] Wherein: 1 is the electrode needle, 2 is the electrode seat, 2-1 is the annular cylinder, 2-2 is the circular boss, 3 is the double helical guide vane, 3-1 is the first pair of helical guide vanes, 3-2 is the second pair of helical guide vanes, and 3-3 is the third pair of helical guide vanes; letter a is the airflow inlet boundary, and letter b is the airflow outlet boundary. Detailed Implementation
[0074] To make the above-mentioned objectives and beneficial effects of this technical solution more apparent and understandable, the specific implementation methods of this technical solution will be further described below with reference to the accompanying drawings and embodiments:
[0075] 1. See Figure 1-1 , Figure 1-2 , Figure 2 , Figure 3-1 As shown, the electrode nozzle of this technical solution includes: an electrode needle 1, an electrode seat 2, and a spiral air passage composed of double spiral guide vanes 3 disposed in the electrode seat 2.
[0076] 2. At the center of the axis of the electrode holder 2, there is a circular cylindrical structure 2-1, the inner space of which is used to place the electrode needle 1 so that the electrode needle and the electrode holder are embedded as one unit, and the tip of the electrode needle extends downward out of the circular cylindrical structure.
[0077] 3. A snap-fit structure can be provided on the circular boss 2-2 on the upper half of the electrode holder to realize the installation with the ion wind rod body.
[0078] 4. Combining Figure 3-1-a , Figure 3-2 , Figure 3-2-aThe spiral guide vanes 3 are divided into three parts: a first pair of spiral guide vanes 3-1 with a twist angle of 30°, a second pair of spiral guide vanes 3-2 with a twist angle of 45°, and a third pair of spiral guide vanes 3-3 with a twist angle of 60°. The first, second, and third pairs of spiral guide vanes are arranged sequentially from top to bottom from the inlet end to the outlet end of the electrode nozzle, but they are not connected to each other. Instead, they are arranged with a 90° spiral phase angle offset from each other with the center line of the electrode nozzle as the center. There are two reasons for this arrangement: First, under the premise of ensuring that the outgoing airflow is within the set swirling range (which can be characterized by the size of the outgoing angle), the arrangement of increasing twist angles is beneficial to reducing the pressure loss of the nozzle airflow, reducing the energy consumption of compressed air, and reducing the airflow pressure damage to the ion bar and nozzle caused by compressed air. Second, the phase angle offset of the three pairs of spiral guide vanes is more conducive to increasing the swirling speed and achieving a faster electrolysis speed.
[0079] 5. Optionally, see Figure 4-4 As shown, the three pairs of spiral guide vanes can also be connected end to end / connected to each other (without rotational angle misalignment) to produce a swirling effect. However, the swirling airflow produced by this setting has a lower velocity and a more balanced velocity distribution.
[0080] 6. The characteristic of the electrode nozzle in this technical solution is the relative positional relationship between the electrode needle 1 and its annular column 2-1 located on the central axis of the electrode seat and the third pair of spiral guide vanes 3-3: the end face of the third pair of spiral guide vanes 3-3 extends outward (in the direction of airflow outward) beyond the tip of the electrode needle, and is on the same plane as the end face of the outlet of the electrode seat. This places the tip of the electrode needle within the space enclosed by the double spiral guide vanes and / or within the air passage formed by the double spiral guide vanes and the electrode seat. There are three reasons for this arrangement: First, to enhance the overall vortex intensity of the outgoing airflow, facilitating the mixing and uniform distribution of positive and negative ions; second, to create a larger vortex range for the outgoing airflow, thereby driving and expanding the transport range of positive and negative ions, and thus expanding the electrostatic discharge range; third, to allow the spiral airflow to contact the tip of the electrode needle earlier, facilitating the early mixing and uniform distribution of positive and negative ions, and improving the stability of the electrostatic discharge performance.
[0081] Best Practices
[0082] To verify the feasibility of the electrode nozzle structure of this technical solution, electrode nozzles corresponding to double-helix guide vanes with different structural parameters (such as...) were specifically tested. Figure 2 , Figure 4-1 , Figure 4-2 , Figure 4-3 , Figure 4-4 (as shown) and electrode nozzles (such as) with different positional relationships between the electrode needle and its annular cylinder and the third pair of spiral guide vanes. Figure 2 , Figure 4-5 , Figure 4-6 As shown in the figure, a simulation test comparison experiment was conducted.
[0083] To better evaluate the outgoing swirling flow and its impact on static elimination, an external air domain structure characterized by the maximum radial structural dimension of the electrode nozzle was constructed. (See [link to relevant documentation]). Figure 5-1 As shown.
[0084] All simulation tests used a Realizable k-ε turbulence mathematical model. The boundary conditions at the airflow inlet (a) were set to fully developed flow with a flow rate of 3 [L / min]; the airflow outlet (b) was set to a zero-pressure boundary; and no-slip wall boundaries were used. (See...) Figure 5-2 , 5-3 As shown.
[0085] The electrode nozzle structures used in the simulation tests are shown in Table 1:
[0086] Table 1. Description of electrode nozzle structure in different comparative examples
[0087]
[0088] Table 2. Ejection angles of electrode nozzles in different comparative embodiments.
[0089]
[0090] from Figure 6-1 , Figure 6-2 , Figure 6-3 , Figure 6-3-1 , Figure 6-4 As shown in the diagram, the characteristics of the swirling jet in this case are evident. Two axially symmetrical airflows are ejected outwards through an air passage composed of double helical guide vanes, while simultaneously driving the surrounding airflow to rotate outwards (the downward direction is taken as an example in each diagram).
[0091] contrast Figure 6-3 , Figure 7-1 , 7-2 7-3, and combined with Figure 9 , 10 It can be seen that as the torsion angle of the spiral guide vane increases, the exit velocity of the two jet airflows increases, the exit angle increases (see Table 2), and the range of the airflow they drive also increases (comparison). Figure 6-3-1 , Figure 8-1 , 8-2 (8-3); However, compared with Comparative Example 3, this technical case significantly reduces the wall pressure at the inlet end of the electrode nozzle caused by the airflow, which is beneficial to reduce the pressure loss of the nozzle airflow, reduce the energy consumption of compressed gas and the mechanical damage of compressed gas to the ion air bar and nozzle.
[0092] contrast Figure 6-3 , Figure 7-4and combined Figure 10 , Figure 11 When the exit angles of the swirling gas streams are similar (see Table 2), this technical example has a larger exit velocity and a similar average vortex quantity compared to Comparative Example 4, thereby achieving similar ion coverage and ion balance performance with a faster dissipation velocity.
[0093] contrast Figure 6-3 , Figure 7-5 , Figure 7-6 and combined Figure 10 , Figure 11 As shown in Table 2, as the ends of the third pair of spiral guide vanes gradually move towards the tip of the electrode needle (moving towards the inside of the nozzle), the exit velocity of the two spiral jets decreases (leading to a decrease in the dissipation velocity), the exit angle decreases (leading to a decrease in the dissipation range), the vortex of the hemispherical exit surface also decreases (leading to a decrease in ion balance performance), and the range of the airflow it drives also decreases (compared to...). Figure 6-3-1 , Figure 8-5 , Figure 8-6 This is not conducive to achieving the purpose of this technical solution.
[0094] The technical solution of this utility model utilizes the spiral diffusion jet output by the nozzle itself, enabling more positive and negative ions to be transported more quickly to a wider area, thus increasing the electrostatic elimination range. By utilizing the spiral jet output by the nozzle itself, the positive and negative ions generated at the tip of the electrode needle are naturally "stirred" and "mixed" before being transported to the object surface, effectively improving ion balance performance. By setting an array of spiral guide vanes with staggered spiral phase angles, while ensuring a wide jet range (larger emission angle), it helps to reduce the pressure loss of the nozzle airflow. This invention reduces compressed air energy consumption and mechanical damage to the ion air bar and nozzle. Finally, the technical solution of this invention, by adjusting the positional relationship between the electrode needle and its annular column located on the central axis of the electrode seat and the third pair of spiral guide vanes, can enhance the overall vortex intensity of the outgoing airflow, making it easier for positive and negative ions to mix and distribute evenly. This, in turn, drives and expands the transport range of positive and negative ions, thereby expanding the electrostatic discharge range. It also allows the tip of the electrode needle to contact the spiral airflow earlier, making it easier to form the mixing and even distribution of positive and negative ions earlier, thus improving the stability of the electrostatic discharge performance.
[0095] This invention can be widely used in the design and manufacturing of ion air bar electrode nozzles.
Claims
1. A rotary electrode nozzle for static elimination, comprising an electrode holder and an electrode needle located therein, characterized in that: A circular cylindrical structure is set at the center of the electrode seat shaft, and an electrode needle is placed in the inner space. The electrode needle is embedded in the electrode seat as a whole. Inside the electrode holder, along the longitudinal direction of the electrode needle, a spiral airflow channel composed of double spiral guide vanes is set. The spiral airflow channel is located on the outer periphery of the annular cylindrical structure; The double-helix guide vane includes a first pair of helical guide vanes with a twist angle of A degrees, a second pair of helical guide vanes with a twist angle of B degrees, and a third pair of helical guide vanes with a twist angle of C degrees; The first pair of spiral guide vanes, the second pair of spiral guide vanes, and the third pair of spiral guide vanes are arranged sequentially from the air inlet end to the air outlet end of the electrode nozzle. The rotary electrode nozzle used for static elimination adopts a spiral airflow channel structure composed of double spiral guide vanes, forming and outputting a spiral diffusion swirling ion jet at the gas outlet end of the electrode seat.
2. The spiral electrode nozzle for static elimination according to claim 1, characterized in that The aforementioned torsion angle A is less than the torsion angle B. The aforementioned torsion angle B degrees is less than the torsion angle C degrees.
3. The spiral electrode nozzle for static elimination according to claim 1, characterized in that The aforementioned torsion angle is A degrees, and its torsion angle is 30°; The aforementioned torsion angle is B degrees, and its torsion angle is 45°; The aforementioned torsion angle is C degrees, which is 60°.
4. The spiral electrode nozzle for static elimination according to claim 1, wherein The first pair of spiral guide vanes, the second pair of spiral guide vanes, and the third pair of spiral guide vanes are arranged sequentially from the air inlet end to the air outlet end of the electrode nozzle, and are not connected to each other; with the center line of the electrode nozzle as the center, the three pairs of spiral guide vanes are staggered with a spiral phase angle of 90° between them.
5. The spiral electrode nozzle for static elimination according to claim 1, wherein The first pair of spiral guide vanes, the second pair of spiral guide vanes, and the third pair of spiral guide vanes are arranged sequentially from the air inlet end to the air outlet end of the electrode nozzle, and are connected end to end or continuously arranged with no rotational angle misalignment.
6. The spiral electrode nozzle for static elimination according to claim 1, wherein The positional relationship between the electrode needle and its annular column located at the central axis of the electrode holder and the third pair of spiral guide vanes is as follows: the end of the third pair of spiral guide vanes extends outward or beyond the tip of the electrode needle, extending all the way to the structural edge of the air outlet end of the electrode holder, and placing the tip of the electrode needle inside the space enclosed by the spiral guide vanes and / or inside the air passage formed by the spiral guide vanes and the electrode holder.
7. The spiral electrode nozzle for static elimination according to claim 1, wherein The tip of the electrode needle extends out of the annular column.
8. The spiral electrode nozzle for static elimination according to claim 1, characterized in that A snap-fit structure is provided on the circular protrusion on the upper half of the electrode holder to realize the installation and fixation between the circular protrusion on the upper half of the electrode holder and the ion wind rod.
9. The spiral electrode nozzle for static elimination according to claim 1, wherein The swirling jet consists of two axisymmetric airflows that rotate and are ejected outward through an air passage composed of double helical guide vanes, while simultaneously driving the surrounding airflow to rotate and be ejected outward as well.
10. The spiral electrode nozzle for static elimination according to claim 1, wherein The torsion angle of the spiral guide vane is directly proportional to the exit velocity, exit angle, and vorticity of the hemispherical exit surface of the two spiral air jets.