Air purification equipment and its electric purification components

Abstract

The present application relates to the above air purification equipment and its electric purification components, including two or more electrode regions arranged at intervals along the air flow direction. Each electrode region includes an ionization electrode group and a collection electrode group. After the ionization electrode group and the collection electrode group are energized, they are used to form an electric field, so that air passes through two or more electrode regions to generate ionic wind and is accelerated step by step for output. It can achieve a high purification efficiency under the condition of a lower air velocity in the front electrode region, and can also achieve step-by-step driving of the air flow to increase the velocity in the subsequent electrode regions, realizing a high air outlet velocity and circulation volume. The use of a fan is avoided, and the problem that the method of driving ionic wind by the ionization electrode has a poor wind resistance effect is overcome. When the air circulation volume increases, the interception efficiency of air pollutants is greatly reduced, resulting in a low purification efficiency of the air purification equipment.

Description

Technical Field

[0001] The present application relates to the technical field of air purification equipment, and particularly to an air purification equipment and its electric purification component. Background Art

[0002] With the improvement of living standards, people's pursuit of a high-quality living environment is increasing day by day. In particular, they pay more and more attention to indoor air pollution, which has given rise to air purification products that can adsorb, decompose or transform various air pollutants (generally including PM2.5, dust, pollen, odor, formaldehyde, second-hand smoke pollution, bacteria, allergens, etc.) and effectively improve indoor air quality. According to the purification technology, it can be divided into two types: filter-type air purification equipment and electric purification air purification equipment. Although the filter-type air purification equipment has a high interception efficiency for pollutants, it must use a fan to drive air circulation, and there are problems such as high noise and high later maintenance costs. The optimized electric purification air purification equipment has gradually become popular.

[0003] The electric purification air purification equipment mainly relies on the ionization electrode to generate ionic wind to ionize and kill and collect and precipitate the particulate matter and bacteria in the air, and can avoid using a fan. However, due to the poor anti-wind resistance effect of the method of driving the generation of ionic wind by the ionization electrode, when the air circulation volume increases, the interception efficiency of air pollutants is greatly reduced, resulting in a low purification efficiency of the air purification equipment. Summary of the Invention

[0004] Based on this, in view of the problem of the low purification efficiency of traditional electric purification air purification equipment, it is necessary to provide an air purification equipment and its electric purification component.

[0005] An electric purification component of an air purification equipment includes two or more electrode regions arranged at intervals along the air flow direction. Each of the electrode regions includes an ionization electrode group and a collection electrode group. After the ionization electrode group and the collection electrode group are energized, they are used to form an electric field, so that air passes through two or more of the electrode regions to generate ionic wind and accelerate and output step by step.

[0006] In one embodiment, each of the collection electrode groups includes two or more collection electrodes arranged at intervals.

[0007] In one embodiment, each of the collection electrode groups includes two or more collection electrodes arranged at annular intervals. Each of the ionization electrode groups includes an ionization electrode, and the ionization electrode is arranged at the center line position of the collection electrodes arranged at the annular intervals in the corresponding electrode region.

[0008] In one embodiment, each of the collection electrode groups includes two or more collection electrodes arranged side by side at intervals. Each of the ionization electrode groups includes an ionization electrode, and the ionization electrode is arranged at the center line position of the two collection electrodes arranged side by side in the corresponding electrode region.

[0009] In one embodiment, the ionization electrode is a tungsten wire electrode or a carbon fiber bundle electrode.

[0010] In one embodiment, the ionization electrode is a needle electrode or a barbed electrode.

[0011] In one embodiment, the shape of the collecting electrode is any one of sheet, triangle, wedge, corrugated, rhombus, water droplet and fan shape.

[0012] In one embodiment, the collecting electrode is a wedge-shaped collecting electrode. The width of the air inlet end of the wedge-shaped collecting electrode is less than or equal to 10 mm. The width of the air outlet end of the wedge-shaped collecting electrode is greater than the width of the air inlet end of the wedge-shaped collecting electrode. The distance between the air inlet end and the air outlet end of the wedge-shaped collecting electrode is 1 - 500 mm.

[0013] In one embodiment, the number of the electrode regions is two, including a pre-acceleration electrode region and an acceleration electrode region. The ionization electrode group of the pre-acceleration electrode region is connected to a power supply terminal with a voltage of ±1 - 20 kV. The ionization electrode group of the acceleration electrode region is connected to a power supply terminal with a voltage of ±1 - 40 kV. The collecting electrode group of the pre-acceleration electrode region and the collecting electrode group of the acceleration electrode region are both connected to a grounding terminal.

[0014] In one embodiment, an air purification device is provided, including the above-mentioned electric purification component.

[0015] The above air purification device and its electric purification component include two or more electrode regions arranged at intervals along the air flow direction. Each electrode region includes an ionization electrode group and a collecting electrode group. Each ionization electrode group and each collecting electrode group can form an electric field to enable air to generate ionic wind and be gradually accelerated and output after passing through two or more electrode regions. It can achieve a higher purification efficiency under the condition of a lower air speed in the front electrode region, and can also achieve a gradual increase in the air flow speed in the subsequent electrode regions, achieving a higher air outlet speed and circulation volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of an electric purification component in an embodiment;

[0017] Figure 2 It is a comparison diagram of air speed distributions for acceleration in one electrode region and acceleration in two electrode regions in an embodiment;

[0018] Figure 3 It is a distribution diagram of ionic wind speeds at three different positions of the ionization electrode in an embodiment;

[0019] Figure 4 It is a distribution diagram of air outlet speeds at three different positions of the ionization electrode in an embodiment;

[0020] Figure 5 Schematic diagram of the electric field direction of the wedge-shaped collector in an embodiment;

[0021] Figure 6 Schematic diagram of the electric field direction of the sheet-shaped collector with auxiliary electrodes in an embodiment.

[0022] Description of reference numerals: 10, pre-acceleration electrode region; 20, acceleration electrode region; 110, pre-acceleration power supply terminal; 120, ionization electrode in the pre-acceleration electrode region 10; 130, collector in the pre-acceleration electrode region 10; 140, auxiliary electrode in the pre-acceleration electrode region 10; 210, acceleration power supply terminal; 220, ionization electrode in the acceleration electrode region 20; 230, collector in the acceleration electrode region 20. Detailed implementation manners

[0023] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] It can be understood that the terms "first", "second", etc. used in this application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, the first resistor can be called the second resistor, and similarly, the second resistor can be called the first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0026] It can be understood that "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if there is an electrical signal or data transmission between the connected circuits, modules, units, etc.

[0027] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "include" or "have", etc. specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0028] With the improvement of living standards, people's pursuit of a high-quality living environment is increasing day by day. In particular, they are paying more and more attention to indoor air pollution, which has given rise to air purification products that can adsorb, decompose, or transform various air pollutants (generally including PM2.5, dust, pollen, odors, formaldehyde, second-hand smoke pollution, bacteria, and allergens, etc.) and effectively improve indoor air quality. According to the purification technology, it can be divided into two types: filter-type air purification equipment and electro-purification air purification equipment. Although the filter-type air purification equipment has a high interception efficiency for pollutants, it must use a fan to drive air circulation, and there are problems such as high noise and high later maintenance costs. The optimized electro-purification air purification equipment has gradually become popular.

[0029] The electro-purification air purification equipment mainly relies on the ionization electrode to generate an ion wind to ionize and kill and collect and precipitate the particulate matter and bacteria in the air, and can avoid using a fan. However, due to the poor anti-wind resistance effect of the method of driving the generation of the ion wind by the ionization electrode, when the air circulation volume increases, the interception efficiency of the air pollutants is greatly reduced, resulting in a low purification efficiency of the air purification equipment. Therefore, in view of the above problems, the present application provides an electro-purification component of an air purification equipment. After the ionization electrode groups and the collection electrode groups in two or more electrode regions are energized, an electric field is formed, so that the air passes through multiple electrode regions in sequence to generate an ion wind and is output step by step along the air supply direction. It can not only achieve a high purification efficiency under the condition of a low air speed in the front electrode region, but also realize the step-by-step driving of the air flow speed increase in the subsequent electrode regions, achieving a high air outlet speed and circulation volume.

[0030] In one embodiment, an electro-purification component of an air purification equipment is provided, which includes two or more electrode regions arranged at intervals along the air flow direction. Each electrode region includes an ionization electrode group and a collection electrode group. After the ionization electrode group and the collection electrode group are energized, they are used to form an electric field, so that the air passes through two or more electrode regions to generate an ion wind and is output step by step.

[0031] Specifically, the electro-purification component of this embodiment is composed of two or more electrode regions arranged side by side at intervals. Each electrode region includes an ionization electrode group and a collection electrode group. The ionization electrode group is connected to high voltage, and the collection electrode group is grounded. A corona discharge is generated between the ionization electrode group and the collection electrode group to form an electric field strength. The particulate pollutants such as dust in the air near the ionization electrode group are ionized by using the electrostatic field, and are charged and adsorbed on the surface of the collection electrode group to achieve the purpose of purifying the air. It can be understood that grounding the collection electrode group is a more convenient way to form an electrostatic field with the ionization electrode group connected to high voltage. In other embodiments, the collection electrode group can also be connected to a voltage lower than that of the ionization electrode group, as long as the purpose of generating a corona discharge between the ionization electrode group and the collection electrode group to form an electric field strength can be achieved. Among them, as Figure 1As shown, taking the number of electrode regions as two as an example, the two electrode regions are arranged in sequence along the ion wind blowing direction, and are respectively used as the pre-acceleration electrode region 10 and the acceleration electrode region 20. In some other embodiments, the number of electrode regions can also be three or more.

[0032] Further, during the process of adsorbing and precipitating charged pollutants, the potential difference between the ionization electrode group and the collection electrode group causes air flow to form an ion wind in the electrode region. The electrode regions are arranged side by side along the air flow direction. The ion wind output from the previous electrode region already has a certain initial wind speed and will be further accelerated when entering the next electrode region. When multiple electrode regions are provided, the ion wind can pass through multiple electrode regions for multiple accelerations to achieve the superposition of wind speeds, and then a negative pressure can be formed when obtaining a relatively high air outlet speed, further increasing the air intake volume, thereby further improving the overall air circulation volume. It can be understood that the voltage values connected to the ionization electrode groups of multiple electrode regions arranged at intervals along the air flow direction can be the same, can increase step by step, or can be slightly lower for the subsequent stage than the previous stage, all of which can achieve the purpose of driving the air flow to increase in speed step by step and realize a relatively high air outlet speed and circulation volume.

[0033] In addition, the interval setting means that a preset gap is provided between the electrode regions. It can be understood that the smaller the preset gap is set, the closer the electrode regions are to each other, and the more obvious the step-by-step acceleration effect on the ion wind is. The size of the preset gap is not fixed and can be set according to actual needs to obtain the maximum acceleration effect and a suitable field strength value.

[0034] Among them, in the first-stage electrode region arranged side by side along the air flow direction, the speed of its ion wind is the lowest in the entire electric purification component. Therefore, it can be not affected by wind resistance and obtain a relatively high interception efficiency. And while obtaining a relatively high air outlet speed in the subsequent electrode regions, it can still assist in intercepting pollutants, making the purification effect better.

[0035] Taking the pre-acceleration electrode region 10 as an example, in the pre-acceleration electrode region 10, the ionization electrode group may specifically include one or more ionization electrodes 120, and the collection electrode group may specifically include one or more collection electrodes 130. When the number of ionization electrodes 120 in the ionization electrode group and the number of collection electrodes 130 in the collection electrode group are both two or more, the collection electrodes 130 can be arranged in a column or in a ring, and the setting manner of the ionization electrodes 120 can be adjusted correspondingly according to the actual setting manner of the collection electrodes 130.

[0036] The way of energizing the ionization electrode groups and the collection electrode groups in each electrode region is not unique. It can be separately connected to a corresponding power supply terminal and a grounding terminal, or connected to the same power supply terminal and grounding terminal after being connected in series or parallel. For example, when connected in parallel, the ionization electrode groups in each electrode region are all connected to the same positive or negative polarity power supply terminal, and the collection electrode groups in each electrode region are all connected to the same grounding terminal, so that the ionization electrode groups and the collection electrode groups in multiple electrode regions are connected in parallel. When connected in series, the ionization electrode groups of the electrode regions on one side among multiple electrode regions arranged side by side at intervals are connected to a positive or negative polarity power supply terminal, and the collection electrode groups of the electrode regions on the other side among multiple electrode regions arranged side by side at intervals are connected to the grounding terminal. The collection electrode group of each electrode region arranged from one side to the other side among multiple electrode regions arranged side by side at intervals is connected to the ionization electrode group of its downstream electrode region.

[0037] The electric purification component of the above air purification device energizes multiple electrode regions arranged side by side at intervals along the air flow direction, so that an electric field is formed between its ionization electrode groups and collection electrode groups, so that air passes through each electrode region to generate ionic wind and is accelerated step by step for output. It can not only achieve a high purification efficiency under the condition of a lower air speed in the front electrode region, but also realize the step-by-step driving of the air flow speed increase in the subsequent electrode regions, and achieve a high air outlet speed and circulation volume.

[0038] In one embodiment, as Figure 1 shown, the number of electrode regions is two, including a pre-acceleration electrode region 10 and an acceleration electrode region 20. The ionization electrode group of the pre-acceleration electrode region 10 is connected to a power supply terminal with a voltage of ±1 to 20 kV, and the ionization electrode group of the acceleration electrode region 20 is connected to a power supply terminal with a voltage of ±1 to 40 kV. The collection electrode groups of the pre-acceleration electrode region 10 and the acceleration electrode region 20 are both connected to the grounding terminal.

[0039] Specifically, the ionization electrode group of the pre-acceleration electrode region 10 is connected to the pre-acceleration power supply terminal 110, which can be connected to the positive high-voltage terminal or the negative high-voltage terminal, and the voltage value range can be selected as ±1 to 20 kV, without limitation. Similarly, the acceleration power supply terminal 210 to which the ionization electrode group of the acceleration electrode region 20 is connected can also be connected to the positive high-voltage terminal or the negative high-voltage terminal, and the voltage value range can be selected as ±1 to 40 kV. The collection electrode groups of the pre-acceleration electrode region 10 and the acceleration electrode region 20 are both connected to the grounding terminal. Among them, the specific pre-acceleration voltage value and acceleration voltage value applied on the pre-acceleration power supply terminal 110 and the acceleration power supply terminal 210 are not limited and can be selected according to actual needs. The two can apply the same voltage value or different voltage values.

[0040] Further, after the ionization electrode group and the collection electrode group in the pre-acceleration electrode region 10 and the acceleration electrode region 20 are energized, the pre-acceleration voltage is adjusted to a preset first voltage value, so that an acceleration electric field of the ionic wind is formed in the pre-acceleration electrode region 10, and the charged pollutants after ionization are adsorbed and precipitated at the most suitable wind speed, realizing efficient purification. When the ionic wind enters the acceleration electrode region 20 from the air outlet of the pre-acceleration electrode region 10, since it already has a certain initial wind speed, the acceleration voltage can be adjusted to a preset second voltage value to further accelerate the ionic wind output from the pre-acceleration electrode region 10, and then the air volume is output to the outside of the air purification device through the air outlet of the acceleration electrode region 20. It can be understood that the preset first voltage value is the pre-acceleration voltage applied to the ionization electrode group of the pre-acceleration electrode region 10. At this voltage, the pollutants can be purified most efficiently at the pre-acceleration ionization region 10. The preset second voltage value is the acceleration voltage applied to the ionization electrode group of the acceleration electrode region 20. At this voltage, a higher air outlet speed and circulation volume can be ensured. The preset first voltage value and the preset second voltage value can be obtained by those skilled in the art through experiments in different application environments.

[0041] As Figure 2 shown is a wind speed comparison diagram of single-stage acceleration and the two-stage electrode region acceleration adopted in this embodiment. The solid line shows the wind speed distribution diagram after two-stage acceleration when both the pre-acceleration voltage and the acceleration voltage are set to a positive high voltage of 9 kV; the dotted line shows the wind speed distribution diagram when only single-stage acceleration is adopted. Among them, the vertical axis is the wind speed magnitude, and the horizontal axis is the coordinate position along the air supply direction. It can be seen from the figure that when only single-stage acceleration is adopted, under the action of the electric field, the accelerated air flow generates an ionic wind, and the maximum ionic wind speed is about 0.8 m / s. And after leaving the electric field, the wind speed decays rapidly. After two-stage acceleration, the wind speed can reach 2 m / s, which is significantly improved.

[0042] It can be understood that when the electrode region is expanded to multiple ones, it can be that the pre-acceleration electrode region 10 with the ionization electrode group connected to the power supply terminal with a voltage of ±1 to 20 kV is expanded to multiple ones, or it can be that the acceleration electrode region 20 with the ionization electrode group connected to the power supply terminal with a voltage of ±1 to 40 kV is expanded to multiple ones, or both can be expanded to multiple ones. The quantity and form are not limited and can be set according to the purification efficiency and air circulation volume of the actual air purification device.

[0043] In this embodiment, after setting two-stage electrode region acceleration, the second-stage acceleration electrode region further increases the wind speed on the basis of the pre-acceleration electrode region, greatly improving the system air volume and the air outlet speed.

[0044] In one embodiment, each collection electrode group includes two or more collection electrodes arranged at intervals.

[0045] It can be understood that the collector group of each electrode region includes two or more collectors arranged at intervals, which are used to adsorb and precipitate particulate pollutants such as charged dust generated by the ionization electrode group. Taking Figure 1 the example of an air purification device including two electrode regions, namely a pre-acceleration electrode region 10 and an acceleration electrode region 20, the collector group of the pre-acceleration electrode region 10 includes two or more pre-acceleration collectors 130 arranged at intervals, and one or more pre-acceleration ionization electrodes 120 arranged according to the arrangement of the pre-acceleration collectors 130. The collector group of the acceleration electrode region 20 includes two or more acceleration collectors 230 arranged at intervals, and one or more acceleration ionization electrodes 220 arranged according to the arrangement of the acceleration collectors 230.

[0046] Specifically, the arrangement of each collector is not unique and can be designed according to the shape of the air purification device required in practice. For example, each collector group can include two or more collectors arranged at annular intervals, or can include two or more collectors arranged side by side at intervals. It can be understood that when the collectors are arranged in a ring to form a collector group, the shape of the air purification device can be cylindrical or barrel-shaped; when the collectors are arranged side by side at intervals as Figure 1 shown, the shape of the air purification device can be square.

[0047] Furthermore, the shape and size of each collector are not unique and can be selected according to actual needs. In one embodiment, the shape of the collector is any one of sheet-shaped, triangular, wedge-shaped, corrugated, diamond-shaped, water-drop-shaped, and fan-shaped. Additionally, in one of the embodiments, as Figure 1 shown, when the collector is a wedge-shaped collector, the width of the air inlet end of the wedge-shaped collector is less than or equal to 10 mm, the width of the air outlet end of the wedge-shaped collector is greater than the width of the air inlet end of the wedge-shaped collector, and the distance between the air inlet end and the air outlet end of the wedge-shaped collector is 1 - 500 mm. Among them, the direction from the air inlet end to the air outlet end of the wedge-shaped collector can be understood as the air supply direction of each electrode region. In this embodiment, the wedge-shaped structure of the collector enables the air flow path to form an accelerating structure with a wide inlet and a narrow outlet, and can form an electric field direction along the air supply direction, which plays an accelerating role on the charged air flow.

[0048] It can be understood that each ionization electrode group in each electrode region includes one or more ionization electrodes. The arrangement of the ionization electrodes is not unique and can be varied according to the arrangement of the collection electrodes in the collection electrode group. For example, in one embodiment, when each collection electrode group includes two or more collection electrodes arranged at annular intervals, the ionization electrodes of each ionization electrode group are arranged at the center line positions of the collection electrodes arranged at annular intervals in the corresponding electrode region. It can be understood that in this embodiment, the collection electrodes in each electrode region are arranged in a cylindrical or barrel shape at annular intervals, and the ionization electrodes are arranged at any position on the central axis of the cylinder or barrel. In another embodiment, as Figure 1 shown, when each collection electrode group includes two or more collection electrodes arranged side by side at intervals, the ionization electrodes of each ionization electrode group are arranged at the center line positions of the two collection electrodes arranged side by side in the corresponding electrode region. It can be understood that in this embodiment, the collection electrodes in each electrode region are arranged side by side at intervals on a plane, and the ionization electrodes are arranged at any position on the symmetry center line of the two collection electrodes arranged side by side. Among them, in the setting mode of this embodiment, the number of ionization electrodes can be one less than the number of collection electrodes, and one ionization electrode is arranged on the center line of every two collection electrodes arranged side by side at intervals. In addition, the fact that each ionization electrode mentioned in this embodiment is located at the center line position of the arranged collection electrodes is a setting mode that can make the formed ion wind blow out evenly from the center point, but it is not the only mode. In other embodiments, the ionization electrodes can also be arranged at any position on both sides of the center line, as long as it is ensured that an electric field can be formed between the ionization electrodes and the collection electrodes after being energized.

[0049] Specifically, the specific position of the ionization electrode arranged on the center line of the collection electrode is not unique, and its positional relationship with the collection electrode is not unique either. It can be located outside the projection area of the collection electrode on the center line or inside the projection area of the collection electrode on the center line. When the ionization electrode is located outside the projection area of the collection electrode on the center line, it can be located outside the collection electrode on the side close to the air inlet or outside the collection electrode on the side close to the air outlet. It can be understood that when the ionization electrode is located outside the collection electrode on the side close to the air inlet and a positive electric field is formed from the ionization electrode to the collection electrode, the air supply direction of the ion wind is from the air inlet to the air outlet; while when the ionization electrode is located outside the collection electrode on the side close to the air outlet and a positive electric field is formed from the ionization electrode to the collection electrode, the air supply direction of the ion wind will be from the air outlet to the air inlet.

[0050] Of course, according to the principle of the formation of the electric field, when the ionization electrode is arranged at different positions on the center line of the collection electrode, an electric field with different potential distribution laws will be formed, and the acceleration effect on the formed ion wind will also be different. The following takes Figure 3As shown, taking the ion air flow velocity distribution diagrams under three positional relationships between the wedge-shaped collector and the ionization electrode as an example when both the applied pre-acceleration voltage and the acceleration voltage are positive high voltages of 9 kV. Among them, the areas indicated by the upper and lower white triangles are wedge-shaped collectors arranged at intervals side by side, and the black shaded circular blocks are ionization electrodes. Figure 3 Position 1 shown in (a) is that the ionization electrode is located in the front part within the projection area of the collector on the center line. Figure 3 Position 2 shown in (b) is that the ionization electrode is located outside the projection area of the collector on the center line and close to the air inlet side. Figure 3 Position 3 shown in (c) is that the ionization electrode is located in the rear part within the projection area of the collector on the center line. Further, according to the above velocity distribution diagrams, the sub-velocity distribution diagrams at the air outlet corresponding to the three positions can be drawn as shown in Figure 4 Among them, the vertical axis is the wind speed magnitude, the horizontal axis is the plane coordinate perpendicular to the air outlet, and the position of the coordinate 0 on the horizontal axis can be understood as the center line position where the ionization electrode is located, and both sides are the positions extending from the center line to the left and right. Correspondingly, the interception efficiencies for different particle sizes under the three positions can also be counted, as shown in Table 1.

[0051]

[0052] Table 1 Interception efficiencies and maximum wind speeds at different positions

[0053] It can be seen that position 3 can generate the highest wind speed, but the interception efficiency is the worst, while position 2 is the opposite. For the pre-acceleration electrode region, the position of the ionization electrode is preferably selected at the position with the highest interception efficiency, such as position 1 and position 2. However, the pre-acceleration effect on the acceleration electrode region also needs to be considered. From Figure 3 It can be seen that the accelerated air flow at position 2 is dispersed to both sides, resulting in a lower pre-acceleration effect on the acceleration electrode region and forming a dislocation with the ionization electrode in the acceleration electrode region. Therefore, when the acceleration electrode region and the pre-acceleration electrode region are at the same horizontal position, selecting the position of the ionization electrode shown in position 1 is the optimal setting, that is, the ionization electrode is located in the front part within the projection area of the collector on the center line.

[0054] In addition, different-shaped collectors will also form electric fields with different potential distribution laws. Taking the pre-acceleration collector 130 in the pre-acceleration electrode region 10 shown in Figure 5 as a wedge shape for example, it can be seen from the figure that the wedge-shaped structure of the pre-acceleration collector 130 makes the air flow path form an acceleration structure with a wide inlet and a narrow outlet, and can form an electric field direction along the air supply direction with the pre-acceleration ionization electrode 120, playing an accelerating role on the charged air flow. However, when the shape of the collector is sheet-like and the ionization electrode is arranged within the projection area of the collector on the center line, the generated electric field is perpendicular to the air supply direction, playing a deflecting role on the charged air flow and having no accelerating effect. Therefore, in one embodiment, as shown inFigure 6 As shown in Figure 6 , taking the collector and the ionization electrode in the pre-acceleration electrode region 10 as an example, when the shape of the pre-acceleration collector 130 is sheet-like, and the pre-acceleration ionization electrode 120 is arranged within the projection region of the pre-acceleration collector 130 on the center line, it further includes two or more pre-acceleration auxiliary electrodes 140 arranged vertically and spaced apart in the air supply direction. The pre-acceleration auxiliary electrodes 140 are arranged on the side of the pre-acceleration ionization electrode 120 close to the air outlet, and are arranged between two spaced pre-acceleration collectors 130. In this embodiment, by adding the auxiliary electrodes, an electric field direction along the air supply direction can be formed to accelerate the charged air flow. It can be understood that when the shape of the acceleration collector in the acceleration electrode region 20 is sheet-like, and the acceleration ionization electrode is arranged within the projection region of the acceleration collector on the center line, there also correspondingly include two or more acceleration auxiliary electrodes arranged vertically and spaced apart in the air supply direction. The acceleration auxiliary electrodes are arranged on the side of the acceleration ionization electrode close to the air outlet, and are arranged between two spaced acceleration collectors.

[0055] In addition, the materials and shapes of the ionization electrodes in the ionization electrode group of each electrode region are not unique and can be selected according to actual situations. In one embodiment, the ionization electrode is a tungsten wire electrode or a carbon fiber bundle electrode. In one embodiment, the ionization electrode is a needle-shaped electrode or a barbed electrode.

[0056] In one embodiment, an air purification device is provided, including the above-mentioned electric purification component.

[0057] Specifically, the electric purification component is composed of two or more electrode regions arranged side by side and spaced apart. Each electrode region includes an ionization electrode group and a collector electrode group. The ionization electrode group is connected to high voltage, and the collector electrode group is grounded. A corona discharge is generated between the ionization electrode group and the collector electrode group to form an electric field strength. The particulate pollutants such as dust in the air near the ionization electrode group are ionized by the electrostatic field, and are charged and adsorbed on the surface of the collector electrode group to achieve the purpose of purifying the air. It can be understood that grounding the collector electrode group is a more convenient way to form an electrostatic field with the ionization electrode group connected to high voltage. In other embodiments, the collector electrode group can also be connected to a voltage lower than that of the ionization electrode group, as long as the purpose of generating a corona discharge between the ionization electrode group and the collector electrode group to form an electric field strength can be achieved.

[0058] Furthermore, during the process of adsorbing and precipitating charged pollutants, the potential difference between the ionization electrode group and the collection electrode group causes air flow to form an ionic wind in the electrode region. The electrode regions are arranged side by side along the air flow direction. The ionic wind output from the previous electrode region already has a certain initial wind speed and will be further accelerated when entering the next electrode region. When multiple electrode regions are set, the ionic wind can pass through multiple electrode regions for multiple accelerations to achieve the superposition of wind speeds. Furthermore, a negative pressure can be formed when a relatively high air outlet speed is obtained, further increasing the air intake volume, and thus further improving the overall air circulation volume. It can be understood that the voltage values connected to the ionization electrode groups of multiple electrode regions arranged side by side at intervals along the air flow direction can be the same, can increase step by step, or can be slightly lower in the subsequent stage than in the previous stage, all of which can achieve the purpose of driving the air flow speed to increase step by step and realize a relatively high air outlet speed and circulation volume.

[0059] Among them, in the first-stage electrode region arranged side by side along the air flow direction, the speed of its ionic wind is the lowest in the entire electric purification component. Therefore, it can be not affected by wind resistance and obtain a relatively high interception efficiency. Moreover, while obtaining a relatively high air outlet speed in the subsequent electrode regions, it can still assist in intercepting pollutants, making the purification effect better.

[0060] The solution provided by this air purification device to solve the problem is similar to the solution described in the electric purification component of the above air purifier. Therefore, the specific limitations in one or more of the above-described air purification device embodiments can be referred to the limitations on the electric purification component of the air purifier in the foregoing text and will not be elaborated herein.

[0061] In this embodiment, by energizing multiple electrode regions arranged side by side at intervals along the air flow direction, an electric field is formed between the ionization electrode group and the collection electrode group, so that air passes through each electrode region to generate an ionic wind and is accelerated step by step for output. It can not only achieve a relatively high purification efficiency under the condition of a relatively low wind speed in the previous electrode region, but also realize step-by-step driving of the air flow speed increase in the subsequent electrode regions, achieving a relatively high air outlet speed and circulation volume, avoiding the use of a fan, and overcoming the problem that the method of driving an ionic wind by an ionization electrode has a poor anti-wind resistance effect. When the air circulation volume increases, the interception efficiency of air pollutants is greatly reduced, resulting in a relatively low purification efficiency of the air purification device.

[0062] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification.

[0063] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. The electric purification component of an air purification device, characterized in that, It includes two or more electrode regions arranged at intervals along the air flow direction. Each of the electrode regions includes an ionization electrode group and a collection electrode group. After the ionization electrode group and the collection electrode group are energized, they are used to form an electric field, so that air passing through two or more of the electrode regions generates an ionic wind and is accelerated and output step by step. Each of the collection electrode groups includes two or more collection electrodes arranged at intervals. The collection electrodes are wedge-shaped collection electrodes, and the width of the air outlet end of the wedge-shaped collection electrode is greater than the width of the air inlet end of the wedge-shaped collection electrode.

2. The electric purification component of the air purification device according to claim 1, characterized in that Each of the collection electrode groups is grounded, each of the ionization electrode groups is connected to high voltage, and the voltage values connected to the ionization electrode groups of multiple electrode regions arranged at intervals along the air flow direction increase step by step.

3. The electro-purification component of the air purification device according to claim 2, characterized in that, Each of the collection electrode groups includes two or more wedge-shaped collection electrodes arranged at annular intervals. Each of the ionization electrode groups includes an ionization electrode, and the ionization electrode is arranged at the center line position of the wedge-shaped collection electrodes arranged at annular intervals in the corresponding electrode region.

4. The electro-purification component of the air purification device according to claim 2, characterized in that, Each of the collection electrode groups includes two or more wedge-shaped collection electrodes arranged side by side at intervals. Each of the ionization electrode groups includes an ionization electrode, and the ionization electrode is arranged at the center line position of two wedge-shaped collection electrodes arranged side by side in the corresponding electrode region.

5. The electro-purification component of the air purification device according to claim 3 or 4, characterized in that, The ionization electrode is a tungsten wire electrode or a carbon fiber bundle electrode.

6. The electric purification component of the air purification device according to claim 3 or 4, characterized in that The ionization electrode is a needle electrode or a barbed electrode.

7. The electric purification component of the air purification device according to claim 3 or 4, characterized in that, The width of the air inlet end of the wedge-shaped collection electrode is less than or equal to 10 mm, and the distance between the air inlet end and the air outlet end of the wedge-shaped collection electrode is 1 - 500 mm.

8. The electric purification component of the air purification device according to claim 3 or 4, characterized in that The number of the electrode regions is two, including a pre-acceleration electrode region and an acceleration electrode region. The ionization electrode group of the pre-acceleration electrode region is connected to a power supply terminal with a voltage of ±1 - 20 kV, and the ionization electrode group of the acceleration electrode region is connected to a power supply terminal with a voltage of ±1 - 40 kV. The collection electrode group of the pre-acceleration electrode region and the collection electrode group of the acceleration electrode region are both connected to a grounding terminal.

9. The electric purification component of the air purification device according to claim 8, characterized in that, The ionization electrode of the ionization electrode group of the pre-acceleration electrode region is located at a position in the projection area of the wedge-shaped collection electrode on the center line and is in the front part.

10. An air purification device, characterized in that, It includes the electric purification component according to any one of claims 1 - 9.

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