Ion wind wand, static elimination device and ion balance degree adjusting method

Abstract

The invention provides an ion wind bar, a static elimination device and an ion balance degree adjusting method, a controller drives a high voltage generator to input alternative positive and negative voltages to each tuyere, a current ion balance degree value is obtained according to positive ion current and negative ion current input by the tuyere, and the current ion balance degree value is input to the corresponding tuyere; the tuyere comprises a supporting structure, an ionization needle, a discharge intensity adjusting unit and an ion detection plate, and the discharge intensity adjusting unit obtains a first discharge intensity value according to alternate positive and negative voltages and obtains a second discharge intensity value according to a current ion balance degree value. The ionization needle generates a first charged particle flow and a second charged particle flow respectively according to the first discharge intensity value and the second discharge intensity value, and the ion detection plate converts positive ions and negative ions into positive ion current and negative ion current; in the second charged particle flow, the positive ions and the negative ions are in an equilibrium state. Concentrations of positive ions and negative ions in the charged particle flow can be ensured to be consistent.

Description

Technical Field

[0001] The present invention relates to the field of static elimination, in particular to an ion wind rod, a static elimination device and a method for adjusting ion balance. Background Art

[0002] The ion wind wand is a specialized, stationary static elimination device, a type of rod-type static elimination product. It features easy installation, safe and stable operation, and rapid static elimination. It is primarily used in the electronics, semiconductor, pharmaceutical, food processing, medical, cosmetics, textile, printing, and coating industries.

[0003] like Figure 1 As shown, the existing ion wind bar includes a high-voltage generator 1, a controller 2, multiple nozzle assemblies 7 and an ion detection plate 6, wherein the ion detection plate 6 is located adjacent to the air outlet end of each nozzle assembly 7, so that the charged particle flow flowing through the nozzle assembly 7 passes through the ion detection plate 6, thereby obtaining the current ion balance value through the ion detection plate 6 and inputting the current ion balance value into the controller 2.

[0004] However, over long periods of use or under complex operating conditions, individual nozzle manufacturing variations, uneven airflow distribution, and varying degrees of wear on the ionizer pins can lead to inconsistent and difficult-to-maintain ion concentrations and a stable balance of positive and negative ions emitted from each nozzle component under the same high-voltage input. This imbalance in ion output can lead to uneven static neutralization in the working area below the device, creating "blind spots" or "hot spots" where static electricity can remain or over-ionize.

[0005] Therefore, how to ensure that the ion concentration and ion balance output by each nozzle component remain consistent is an urgent problem to be solved. Summary of the Invention

[0006] In order to solve the above-mentioned problems, the present invention provides a nozzle structure, a discharge intensity self-adjustment method and an electrostatic elimination device that can ensure that the concentrations of positive ions and negative ions in the charged particle flow are consistent.

[0007] To achieve the above objectives, in a first aspect, the present invention provides an ion wind wand, comprising a housing, a controller, a high-voltage generator, and a plurality of wind nozzles, wherein the controller is connected to the high-voltage generator, and the wind nozzles are respectively connected to the controller and the high-voltage generator, wherein:

[0008] The controller drives the high-voltage generator to input alternating positive and negative voltages to each of the air nozzles, obtains a corresponding current ion balance value based on the positive ion current and negative ion current input by the air nozzle, and inputs the current ion balance value into the corresponding air nozzle;

[0009] The nozzle includes a support structure, an ionization needle, a discharge intensity adjustment unit, and an ion detection plate. The discharge intensity adjustment unit derives a first discharge intensity value based on the alternating positive and negative voltages, and derives a second discharge intensity value based on the current ion balance value. After the ionization needle generates a first charged particle flow based on the first discharge intensity value or generates a second charged particle flow based on the second discharge intensity value, the ion detection plate converts the positive ions and negative ions sensed in the first charged particle flow or the second charged particle flow into the positive ion current and the negative ion current.

[0010] In the second charged particle flow, the positive ions and the negative ions are in equilibrium.

[0011] In one embodiment, the controller includes an MCU and a current detection unit connected to each other, wherein:

[0012] The current detection unit converts the positive ion current and the negative ion current into a positive ion digital signal and a negative ion digital signal respectively, which are input into the MCU;

[0013] The MCU drives the high-voltage generator to input the alternating positive and negative voltages to each of the air nozzles, analyzes the voltage signal input by the high-voltage generator corresponding to the alternating positive and negative voltages, and obtains the current ion balance value based on the positive ion digital signal and the negative ion digital signal.

[0014] In one embodiment, when the MCU determines that the current ion balance value is greater than a specified ion balance value for several consecutive times, the MCU implements PID interpolation compensation.

[0015] In one embodiment, the discharge intensity adjustment unit includes a programmable resistor and a grounding resistor connected to each other, wherein the ionization needle is connected to a line between the programmable resistor and the grounding resistor;

[0016] When the alternating positive and negative voltages are input into the programmable resistor, after adjustment, the first discharge intensity value input into the ionization needle is obtained;

[0017] When the current ion balance value is input into the programmable resistor, after adjustment, the second discharge intensity value input into the ionization needle is obtained.

[0018] In one embodiment, the ion detection plate is fixed to the support structure and is located in the flow path of the first charged particle flow and the second charged particle flow;

[0019] When the first charged particle flow or the second charged particle flow passes through the ion detection plate, the ion detection plate senses the positive ions and the negative ions in the first charged particle flow or the second charged particle flow.

[0020] In one embodiment, the ion detection plate is located below the ionization needle, wherein the ion detection plate is fixed on the outer side of the inner wall surface of the support structure, or the ion detection plate is embedded in the inner wall surface of the support structure, or the ion detection plate is fixed on the bottom end surface of the support structure.

[0021] In a second aspect, the present invention further provides a static elimination device, comprising the above-mentioned ion wind rod, a gas generator and a host computer, wherein:

[0022] The gas generator injects gas into the interior of the tuyere through the gas pipeline and the gas supply hole;

[0023] The ion wind rod is connected to the host computer through the controller and sends the current ion balance value of each wind nozzle to the host computer.

[0024] In a third aspect, the present invention further provides a method for adjusting ion balance, which is applied to the above-mentioned ion wind rod or the above-mentioned static elimination device, comprising the following steps:

[0025] The high voltage generator inputs alternating positive and negative voltages to each air nozzle;

[0026] The discharge intensity adjustment unit obtains a first discharge intensity value according to the input alternating positive and negative voltages, and the ionization needle performs corona discharge on the injected gas according to the first discharge intensity value to generate a first charged particle flow;

[0027] sensing positive ions and negative ions in the first charged particle flow, and sequentially deriving a positive ion concentration value, a negative ion concentration value, and a current ion balance value based on the positive ions and the negative ions;

[0028] Comparing the current ion balance value with a specified ion balance value, wherein the discharge intensity adjustment unit obtains a second discharge intensity value according to the comparison result;

[0029] When the ionization needle generates a second charged particle flow according to the second discharge intensity value, the positive ions and the negative ions in the second charged particle flow are in a balanced state.

[0030] In one embodiment, sensing the positive ions and negative ions in the first charged particle flow and sequentially deriving a positive ion concentration value, a negative ion concentration value, and a current ion balance value based on the positive ions and the negative ions include:

[0031] When the ionization needle generates a first charged particle flow according to the first discharge intensity value, the ion detection plate senses positive ions in the first charged particle flow and converts the positive ions into a positive ion current;

[0032] When the ionization needle generates the first charged particle flow according to the first discharge intensity value, the ion detection plate senses negative ions in the first charged particle flow and converts the negative ions into negative ion current;

[0033] Converting the positive ion current and the negative ion current into a positive ion digital signal and a negative ion digital signal respectively;

[0034] Determine the positive ion concentration value and the negative ion concentration value according to the positive ion digital signal and the negative ion digital signal respectively;

[0035] The current ion balance value is obtained according to the positive ion concentration value and the negative ion concentration value.

[0036] In one embodiment, the step of obtaining a current ion balance value based on the positive ion concentration value and the negative ion concentration value includes:

[0037] When it is determined that the current ion balance value is greater than the specified ion balance value for several consecutive times, PID interpolation compensation is performed.

[0038] Compared with the prior art, the present invention has one of the following advantages:

[0039] By adding an ion detection plate and a discharge intensity adjustment unit to the nozzle structure, the current ion balance value can be calculated based on the positive ion concentration value and the negative ion concentration value in the charged particle flow. After comparing the current ion balance value with the specified ion balance value, the second discharge intensity value of the ionization needle is obtained based on the comparison result to ensure that the concentrations of positive ions and negative ions in the charged particle flow are consistent;

[0040] After obtaining the current ion balance value, the air nozzle is also connected to the host computer through the controller, so that the host computer can understand the ion balance value of each air nozzle structure in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural diagram of an existing ion wind rod;

[0042] Figure 2 Schematic diagram of the structure of the ion wind rod in the present invention;

[0043] Figure 3 for Figure 2 Principle block diagram of the medium ion wind wand;

[0044] Figure 4 for Figure 2Principle block diagram of the controller;

[0045] Figure 5 for Figure 1 Schematic diagram of a first embodiment of a stroke nozzle;

[0046] Figure 6 for Figure 1 Schematic diagram of a second embodiment of a stroke nozzle;

[0047] Figure 7 for Figure 1 A schematic diagram of a third embodiment of a stroke nozzle;

[0048] Figure 8 Schematic diagram of the structure of the static elimination device in the present invention;

[0049] Figure 9 for Figure 7 Principle block diagram of the static elimination device;

[0050] Figure 10 Flowchart of the discharge intensity self-adjustment method of the present invention.

[0051] The main reference numerals are as follows:

[0052] 1-high-voltage generator; 2-controller; 201-MCU; 202-current detection unit; 2021-transimpedance amplifier; 2022-second-order RC low-pass filter; 2023-integrator; 3-support structure; 301-gas supply hole; 4-ionization needle; 5-discharge intensity adjustment unit; 501-programmable resistor; 502-ground resistor; 6-ion detection board; 7-nozzle; 8-gas generator; 9-host computer. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0054] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface", "inside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a centrally arranged component at the same time. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0055] Example 1

[0056] like Figures 2 to 5 As shown, this embodiment provides an ion wind wand, including a housing, a controller, a high-voltage generator, and a plurality of nozzles. The controller, the high-voltage generator, and a portion of the nozzles are placed inside the housing. The controller is connected to the high-voltage generator, and each nozzle is connected to the controller and the high-voltage generator respectively.

[0057] Specifically, the controller includes an interconnected microcontroller (MCU) and a current detection unit. The MCU is connected to a high-voltage generator and inputs a boost signal to the generator, causing the generator to initially boost the voltage based on the input boost signal. The MCU also receives a voltage signal corresponding to the alternating positive and negative voltages from the generator to determine whether the voltage signal is consistent with the alternating positive and negative voltages.

[0058] The current detection unit is used to convert the input positive ion current and negative ion current into digital positive ion signals and negative ion signals, respectively. The current detection unit includes a transimpedance amplifier, a second-order RC low-pass filter, and an integrator connected in sequence. First, the transimpedance amplifier 5010 converts the positive ion current and negative ion current into digital positive ion voltage signals and negative ion voltage signals, respectively. Then, the positive ion voltage signals and negative ion voltage signals are subjected to second-order RC low-pass filtering for noise reduction. Finally, the noise-reduced positive ion voltage signals and negative ion voltage signals are accumulated by integrator 5012 to determine the charge amount.

[0059] Specifically, high-voltage generator 1 is a multi-channel, independently controlled flyback converter. The MCU inputs a high-precision PWM waveform signal to high-voltage generator 1, which converts the PWM waveform signal into a high-frequency square wave signal through high-speed switching to achieve the initial voltage boost of high-voltage generator 1. After high-voltage AC power is input to high-voltage generator 1, it is converted into alternating positive and negative voltages through a voltage-doubling rectifier circuit and capacitor filtering.

[0060] Exemplarily, the high voltage generator 1 outputs positive voltage and negative voltage alternately according to preset conditions.

[0061] Furthermore, when the high-voltage generator 1 alternately outputs positive voltage and negative voltage, voltage signals corresponding to the positive voltage and negative voltage (i.e., positive voltage signal, negative voltage signal) are alternately input to the MCU, and closed-loop compensation is performed through the PID algorithm to dynamically correct the output parameters of the high-precision PWM waveform signal to ensure that the alternating positive and negative voltages output by the high-voltage generator 1 are consistent with the specified alternating positive and negative voltages.

[0062] Specifically, the nozzle includes a support structure 3 with a built-in hollow area, an ionization needle 4 and a discharge intensity adjustment unit 5 .

[0063] Specifically, support structure 3 is a hollow, open-bottomed cylindrical structure, comprising a gas supply hole 301 formed therein and an ion detection plate 6 secured thereto. Gas supply hole 301 is formed on a sidewall of support structure 3, with its rear end communicating with the hollow region within support structure 3, allowing gas to be continuously injected into the hollow region through gas supply hole 301.

[0064] Furthermore, the top of the ionization needle 4 passes through and is fixed on the top end face of the support structure 3, and the bottom end of the ionization needle 4 is located in the hollow area and faces the outside of the support structure 3, so that the generated first charged particle flow or the second charged particle flow can flow to the outside of the support structure 3 through the bottom opening.

[0065] Furthermore, the ion detection plate 6 is located on the flow path of the first charged particle flow and the second charged particle flow to sense the positive ions and negative ions in the first charged particle flow or the second charged particle flow, and convert the positive ions and negative ions into positive ion current and negative ion current.

[0066] Furthermore, the ion detection plate 6 is an annular structure, fixed to the bottom end surface of the support structure 3, and connected to the current detection unit 202. In the orthographic projection, the ion detection plate 6 is disposed outside the ionization needle 4. When the first charged particle flow or the second charged particle flow flows toward the outside of the support structure 3 and passes through the ion detection plate 6, the ion detection plate 6 contacts the first charged particle flow or the second charged particle flow, thereby sensing positive ions and negative ions, respectively.

[0067] After the high-voltage generator alternately inputs positive and negative voltages into the discharge intensity adjustment unit 5, the discharge intensity adjustment unit 5 determines a first positive voltage discharge intensity and a first negative voltage discharge intensity, respectively. The ionization needle 4 performs a corona discharge on the injected gas based on the input first positive voltage discharge intensity, generating a corresponding first positive ion charged particle stream. The ionization needle 4 also performs a corona discharge on the injected gas based on the input first negative voltage discharge intensity, generating a corresponding first negative ion charged particle stream. When the first positive ion charged particle stream and the first negative ion charged particle stream mix in the hollow region, a first charged particle stream is formed.

[0068] Furthermore, the discharge intensity adjustment unit 503 includes a programmable resistor 5031 and a grounding resistor 5032 connected thereto, wherein the ionization needle 4 is connected to the connection line between the programmable resistor 5031 and the grounding resistor 5032. When positive and negative voltages are alternately input into the programmable resistor 5031, the MCU 502 adjusts the programmable resistor 5031 and the grounding resistor 5032 to obtain a voltage value between the programmable resistor 5031 and the grounding resistor 5032 (i.e., a first positive voltage discharge intensity or a first negative voltage discharge intensity) for input into the ionization needle 4.

[0069] When the positive voltage is input to the discharge intensity adjustment unit 503, the first positive voltage discharge intensity is obtained by the following steps:

[0070] When obtaining the positive voltage value input to the discharge intensity adjustment unit 503, the positive voltage value of the input is defined as

[0071] According to Ohm's law, the total resistance of the programmable resistor 5031 and the grounding resistor 5032 is obtained (ie, ), the corresponding positive current value (i.e., I + ):

[0072]

[0073] Among them, I + is a positive current value, is the positive input voltage value, is the total resistance value;

[0074] Use the following formula to obtain the positive voltage value across the programmable resistor (i.e., ):

[0075]

[0076] in, is the voltage across the programmable resistor, I + is a positive current value, is the resistance value of the programmable resistor;

[0077] The positive voltage difference between the programmable resistor 5031 and the grounding resistor 5032 is obtained using the following formula (ie, ):

[0078]

[0079] in, is the positive voltage difference (i.e., the first positive voltage discharge intensity), is the positive voltage across the programmable resistor, is the positive voltage across the grounding resistor.

[0080] When the negative voltage is input to the discharge intensity adjustment unit 503, the first negative voltage discharge intensity is obtained by the following steps:

[0081] When obtaining the negative voltage value input to the discharge intensity adjustment unit 503, the input negative voltage value is defined as

[0082] According to Ohm's law, the total resistance of the programmable resistor 5031 and the grounding resistor 5032 is obtained (ie, ), the corresponding negative current value (i.e., I - ):

[0083]

[0084] Among them, I - is a negative current value, is the negative input voltage value, is the total resistance value;

[0085] Use the following formula to obtain the negative voltage value across the programmable resistor (i.e., ):

[0086]

[0087] in, is the voltage across the programmable resistor, I - is a negative current value, is the resistance value of the programmable resistor;

[0088] The voltage difference between the programmable resistor 5031 and the grounding resistor 5032 is obtained using the following formula (ie, ):

[0089]

[0090] in, is the voltage difference (i.e., the first negative voltage discharge intensity), is the negative voltage across the programmable resistor. is the negative voltage across the grounding resistor.

[0091] Furthermore, after the current detection unit inputs the positive ion voltage signal into the MCU 502, the positive ion concentration values ​​are obtained using the following formulas:

[0092]

[0093] Among them, C + x is the concentration of positive ions, E + x is the positive ion voltage value, E0 is the zero potential value, S is the electrode slope (theoretical value z is the ion charge number), C b is the blank concentration.

[0094] After the current detection unit inputs the negative ion voltage signal into the MCU 502, the negative ion concentration values ​​are obtained using the following formulas:

[0095]

[0096] Among them, C - x is the concentration of negative ions, E - x is the negative positive ion voltage value, E0 is the zero potential value, S is the electrode slope (theoretical value z is the ion charge number), C b is the blank concentration.

[0097] Furthermore, after respectively obtaining the positive ion concentration value and the negative ion concentration value, the current ion balance value is obtained using the following formula, where:

[0098]

[0099] After obtaining the current ion balance value, the current ion balance value is compared with the specified ion balance value, and the comparison result is input into the discharge intensity adjustment unit in the corresponding air nozzle, and the discharge intensity adjustment unit obtains a second discharge intensity value according to the comparison result.

[0100] Wherein, the current ion balance value is compared with the specified ion balance value. If the current ion balance value is greater than the specified ion balance value, the difference between the two is obtained. After the difference is input into the discharge intensity adjustment unit, the second discharge intensity input to the ionization needle is reduced according to the difference (i.e., the second voltage value input to the ionization needle by the discharge intensity adjustment unit 503 is reduced). If the current ion balance value is less than the specified ion balance value, the difference between the two is obtained. After the difference is input into the discharge intensity adjustment unit, the second discharge intensity input to the ionization needle is increased according to the difference (i.e., the second voltage value input to the ionization needle by the discharge intensity adjustment unit 503 is increased). Wherein, since the resistance value of the programmable resistor 5031 is variable and the resistance value of the ground resistor 5032 is fixed, after the MCU 502 inputs the second voltage value into the programmable resistor 5031, it adjusts the voltage difference between the programmable resistor 5031 and the ground resistor 5032 to input into the ionization needle 4, so that the balance value of the positive ions and negative ions in the generated second charged particle flow is consistent with the specified ion balance value.

[0101] In addition, after obtaining the current ion balance value, MCU 502 compares the current ion balance value with the specified ion balance value in MCU 502 to determine whether the current ion balance value is greater than the specified ion balance value. If MCU 502 determines that the current ion balance value is greater than the specified ion balance value several times in a row, MCU 502 implements PID interpolation compensation.

[0102] Preferably, when the MCU 502 determines that the current ion balance value is greater than the specified ion balance value for five consecutive times, the MCU 502 implements PID interpolation compensation using the following formula:

[0103]

[0104] Example 2

[0105] like Figure 6 As shown, this embodiment provides a wind nozzle, which is different from the ion wind rod of the above embodiment 1 in that:

[0106] The ion detection plate 6 is fixed on the inner wall surface of the support structure 3 , and the outer wall surface of the ion detection plate 6 protrudes from the inner wall surface of the support structure 3 .

[0107] When the ionization needle 4 continuously generates the first charged particle flow or the second charged particle flow, since the ion detection plate 6 is located on the flow path of the charged particle flow, it is convenient to sense the positive ions and negative ions in the first charged particle flow or the second charged particle flow, and convert the positive ions into positive ion current and the negative ions into negative ion current.

[0108] Example 3

[0109] like Figure 7As shown, this embodiment provides a wind nozzle, which is different from the ion wind rod of the above embodiment 1 in that:

[0110] The ion detection plate 6 is embedded in the inner wall surface of the support structure 3 , and the outer wall surface of the ion detection plate 6 and the inner wall surface of the support structure 3 are in the same plane.

[0111] When the ionization needle 4 continuously generates the first charged particle flow or the second charged particle flow, since the ion detection plate 6 is located on the flow path of the charged particle flow, it is convenient to sense the positive ions and negative ions in the first charged particle flow or the second charged particle flow, and convert the positive ions into positive ion current and the negative ions into negative ion current.

[0112] In the above-mentioned embodiments 1 to 3, in order to increase the sensing effect of the ion detection plate for positive ions and negative ions, a fluid baffle is formed on the ion detection plate to block a portion of the first charged particle flow or the second charged particle flow.

[0113] Preferably, an angle of no more than 30° is formed between the fluid baffle and the ion detection plate. This design will not affect the circulation of the first charged particle flow or the second charged particle flow, and can also gather a portion of the first charged particle flow or the second charged particle flow at the connection between the fluid baffle and the ion detection plate.

[0114] More preferably, multiple through holes are formed on the fluid baffle. When a portion of the first charged particle flow or the second charged particle flow contacts the fluid baffle, a portion of the charged particle flow can be guided to the position of the fluid baffle through the non-through hole area to sense the positive ions and negative ions of the first charged particle flow or the second charged particle flow.

[0115] In the above-mentioned embodiments 1 to 3, by adding an ion detection plate and a discharge intensity adjustment unit to the air nozzle, the current ion balance value can be obtained based on the positive ion concentration value and the negative ion concentration value in the first charged particle flow or the second charged particle flow. After comparing the current ion balance value with the specified ion balance value, the second discharge intensity of the input ionization needle is adjusted according to the comparison result to ensure that the concentrations of positive ions and negative ions in the second charged particle flow are consistent.

[0116] Example 4

[0117] like Figure 8 and Figure 9As shown, this embodiment provides an electrostatic elimination device, comprising the ion wind rod described in any one of the above-mentioned embodiments 1 to 3, a gas generator 8 connected to the ion wind rod, and a host computer 9 connected to the controller 2. The gas generator 8 is connected to the gas supply hole 301 in each wind nozzle 7 through a gas pipeline to inject gas into the hollow area of ​​each support structure 3, so that the ionization needle 4 performs corona discharge on the gas to generate a first charged particle flow or a second charged particle flow.

[0118] Each air nozzle is connected to the host computer 9 via the MCU, and the current ion balance value obtained by each air nozzle is input into the host computer 9, so that the host computer connected to the MCU can understand the current ion balance value of each air nozzle in real time.

[0119] Example 5

[0120] like Figure 10 As shown, this embodiment provides a method for adjusting the ion balance, which is applied to the ion wind bar described in any one of the above embodiments 1 to 3, or to the static elimination device described in the above embodiment 3, and includes the following steps:

[0121] S100: The high voltage generator inputs alternating positive and negative voltages to each air nozzle.

[0122] Furthermore, the MCU in the controller inputs a high-precision PWM waveform signal to the high-voltage generator, and the high-voltage generator converts the PWM waveform signal into a high-frequency square wave signal through a high-speed switch to achieve initial voltage boosting of the high-voltage generator.

[0123] After the high-voltage generator completes the initial boost according to the boost signal input by the MCU, the high-voltage AC input to the high-voltage generator is converted into alternating positive and negative voltages through the voltage doubler rectifier circuit and capacitor filter.

[0124] At the same time, when the high-voltage generator outputs alternating positive and negative voltages, voltage signals corresponding to the positive and negative voltages (i.e., positive voltage signals and negative voltage signals) are alternately input to the MCU, and closed-loop compensation is performed through the PID algorithm to dynamically correct the output parameters of the high-precision PWM waveform signal to ensure that the alternating positive and negative voltage values ​​output by the high-voltage generator are consistent with the preset alternating positive and negative voltage values.

[0125] S101. A discharge intensity adjustment unit obtains a first discharge intensity value according to an input alternating positive and negative voltage, and an ionization needle performs corona discharge on an injected gas according to the first discharge intensity value to generate a first charged particle flow.

[0126] Furthermore, when gas is injected into the interior of the hollow area through the gas supply hole, the discharge intensity adjustment unit obtains the first positive voltage discharge intensity and the first negative voltage discharge intensity respectively after receiving the alternating positive and negative voltages input from the outside. The ionization needle alternately generates the first positive ion charged particle flow and the first negative ion charged particle flow according to the alternating input first positive voltage discharge intensity and the first negative voltage discharge intensity. When the first positive ion charged particle flow and the first negative ion charged particle flow are mixed inside the hollow area, the first charged particle flow is formed.

[0127] The first positive voltage discharge intensity and the first negative voltage discharge intensity are obtained according to the steps in the first embodiment.

[0128] S102 , sensing the positive ions and negative ions in the first charged particle flow, and sequentially obtaining a positive ion concentration value, a negative ion concentration value, and a current ion balance value based on the positive ions and the negative ions.

[0129] Furthermore, first, when the first charged particle flow passes through the ion detection plate, the ion detection plate senses the positive ions and negative ions in the first charged particle flow, respectively, and converts the positive ions and negative ions into positive ion current and negative ion current, respectively; then, since the ion detection plate is connected to the current detection unit, when the positive ion current and the negative ion current are input into the current detection unit, they are converted into digital positive ion voltage signals and negative ion voltage signals, respectively; then, the positive ion voltage signal and the negative ion voltage signal are respectively used to obtain the positive ion concentration value and the negative ion concentration value using the formula recorded in Example 1; finally, the positive ion concentration value and the negative ion concentration value are used to obtain the current ion balance value using the formula recorded in Example 1.

[0130] S103: Compare the current ion balance value with the specified ion balance value, and the discharge intensity adjustment unit obtains a second discharge intensity value according to the comparison result.

[0131] Furthermore, after obtaining the current ion balance value, the current ion balance value is compared with the specified ion balance value, and the comparison result is input into the discharge intensity adjustment unit in the corresponding air nozzle, and the discharge intensity adjustment unit obtains a second discharge intensity value based on the comparison result.

[0132] The current ion balance value is compared with the specified ion balance value. If the current ion balance value is greater than the specified ion balance value, the difference between the two is obtained. This difference is input into the discharge intensity adjustment unit, and the second discharge intensity input to the ionization needle is reduced based on the difference (i.e., the second voltage value input to the ionization needle by the discharge intensity adjustment unit 503 is reduced). If the current ion balance value is less than the specified ion balance value, the difference between the two is obtained. This difference is input into the discharge intensity adjustment unit, and the second discharge intensity input to the ionization needle is increased based on the difference (i.e., the second voltage value input to the ionization needle by the discharge intensity adjustment unit 503 is increased).

[0133] For example, when the air nozzle inputs positive ion current and negative ion current to the MCU, it also includes the position ID of the air nozzle in the ion wind rod. Therefore, the MCU will also input the comparison result to the corresponding air nozzle according to the position ID.

[0134] S104 , when the ionization needle generates a second charged particle flow according to the second discharge intensity value, the positive ions and negative ions in the second charged particle flow are in a balanced state.

[0135] The above description is merely a preferred embodiment of the present invention and is intended to be illustrative rather than restrictive of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the present invention within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. An ion wind wand, characterized in that: The device comprises a housing, a controller, a high-voltage generator and a plurality of air nozzles, wherein the controller is connected to the high-voltage generator, and the air nozzles are connected to the controller and the high-voltage generator respectively, wherein: The controller drives the high-voltage generator to input alternating positive and negative voltages to each of the air nozzles, obtains a corresponding current ion balance value based on the positive ion current and negative ion current input by the air nozzle, and inputs the current ion balance value into the corresponding air nozzle; The nozzle includes a support structure, an ionization needle, a discharge intensity adjustment unit, and an ion detection plate. The discharge intensity adjustment unit derives a first discharge intensity value based on the alternating positive and negative voltages, and derives a second discharge intensity value based on the current ion balance value. After the ionization needle generates a first charged particle flow based on the first discharge intensity value or generates a second charged particle flow based on the second discharge intensity value, the ion detection plate converts the positive ions and negative ions sensed in the first charged particle flow or the second charged particle flow into the positive ion current and the negative ion current. In the second charged particle flow, the positive ions and the negative ions are in equilibrium.

2. The ion wind wand according to claim 1, characterized in that: The controller includes an MCU and a current detection unit connected to each other, wherein: The current detection unit converts the positive ion current and the negative ion current into a positive ion digital signal and a negative ion digital signal respectively, which are input into the MCU; The MCU drives the high-voltage generator to input the alternating positive and negative voltages to each of the air nozzles, analyzes the voltage signal input by the high-voltage generator corresponding to the alternating positive and negative voltages, and obtains the current ion balance value based on the positive ion digital signal and the negative ion digital signal.

3. The ion wind wand according to claim 2, characterized in that: When the MCU determines that the current ion balance value is greater than the specified ion balance value for several consecutive times, the MCU implements PID interpolation compensation.

4. The ion wind wand according to any one of claims 1 to 3, characterized in that: The discharge intensity adjustment unit includes a programmable resistor and a grounding resistor connected to each other, wherein the ionization needle is connected to a line between the programmable resistor and the grounding resistor; When the alternating positive and negative voltages are input into the programmable resistor, after adjustment, the first discharge intensity value input into the ionization needle is obtained; When the current ion balance value is input into the programmable resistor, after adjustment, the second discharge intensity value input into the ionization needle is obtained.

5. The ion wind wand according to claim 4, characterized in that: The ion detection plate is fixed on the supporting structure and is located on the flow path of the first charged particle flow and the second charged particle flow; When the first charged particle flow or the second charged particle flow passes through the ion detection plate, the ion detection plate senses the positive ions and the negative ions in the first charged particle flow or the second charged particle flow.

6. The ion wind wand according to claim 5, characterized in that: The ion detection plate is located below the ionization needle, wherein the ion detection plate is fixed on the outer side of the inner wall surface of the support structure, or the ion detection plate is embedded in the inner wall surface of the support structure, or the ion detection plate is fixed on the bottom end surface of the support structure.

7. An electrostatic eliminator, characterized in that: The invention comprises an ion wind rod, a gas generator and a host computer according to any one of claims 1 to 6, wherein: The gas generator injects gas into the interior of the tuyere through the gas pipeline and the gas supply hole; The ion wind rod is connected to the host computer through the controller and sends the current ion balance value of each wind nozzle to the host computer.

8. A method for adjusting ion balance, applied to the ion wind bar according to any one of claims 1 to 6, or the static elimination device according to claim 7, characterized in that: The following steps are involved: The high voltage generator inputs alternating positive and negative voltages to each air nozzle; The discharge intensity adjustment unit obtains a first discharge intensity value according to the input alternating positive and negative voltages, and the ionization needle performs corona discharge on the injected gas according to the first discharge intensity value to generate a first charged particle flow; sensing positive ions and negative ions in the first charged particle flow, and sequentially deriving a positive ion concentration value, a negative ion concentration value, and a current ion balance value based on the positive ions and the negative ions; Comparing the current ion balance value with a specified ion balance value, wherein the discharge intensity adjustment unit obtains a second discharge intensity value according to the comparison result; When the ionization needle generates a second charged particle flow according to the second discharge intensity value, the positive ions and the negative ions in the second charged particle flow are in a balanced state.

9. The method for adjusting the ion balance according to claim 8, wherein: In sensing the positive ions and negative ions in the first charged particle flow, deriving a positive ion concentration value, a negative ion concentration value, and a current ion balance value according to the positive ions and the negative ions in sequence, including: When the ionization needle generates a first charged particle flow according to the first discharge intensity value, the ion detection plate senses positive ions in the first charged particle flow and converts the positive ions into a positive ion current; When the ionization needle generates the first charged particle flow according to the first discharge intensity value, the ion detection plate senses negative ions in the first charged particle flow and converts the negative ions into negative ion current; Converting the positive ion current and the negative ion current into a positive ion digital signal and a negative ion digital signal respectively; Determine the positive ion concentration value and the negative ion concentration value according to the positive ion digital signal and the negative ion digital signal respectively; The current ion balance value is obtained according to the positive ion concentration value and the negative ion concentration value.

10. The method for adjusting ion balance according to claim 8, characterized in that: The step of calculating the current ion balance value according to the positive ion concentration value and the negative ion concentration value includes: When it is determined that the current ion balance value is greater than the specified ion balance value for several consecutive times, PID interpolation compensation is performed.

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