An ion box and purification device compatible with DC power supply and vortex power supply

Abstract

The present invention relates to an ion box and a purification device compatible with DC power supply and vortex power supply, belonging to the technical field of air purification. It includes a frame, and inside the frame, a dust collection area and an ionization area are arranged in parallel. Both the dust collection area and the ionization area include a plurality of plates that are parallel to each other and arranged at intervals. The distance between adjacent low-voltage plates or adjacent high-voltage plates in the ionization area is 44 - 58 mm, the distance between adjacent low-voltage plates in the dust collection area is 11 - 16 mm, and each high-voltage plate is distributed between the low-voltage plates. An ionization electric field is formed inside the ionization area, and the voltage of the ionization electric field is 12 - 19 kV. The present invention can solve the technical problem that the purification device in the prior art needs to be frequently cleaned and maintained, which affects the purification efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of air purification, and specifically relates to an ion box and a purification device compatible with DC power supply and vortex power supply. Background Art

[0002] At present, the mainstream air purification technologies are divided into filtration technology and electrostatic technology. The electrostatic technology charges the particulate matters in the air through an ionization zone, and the charged particulate matters are adsorbed by the electric field formed in the dust collection zone to complete purification. Various high-voltage electrostatic dust removal devices designed based on the principle of electrostatic technology can complete the purification of a relatively wide flow rate and relatively comprehensive particulate pollution, can be stably used under different environments such as temperature and humidity, and can be preferably applied to household, commercial, industrial, special and other fields, with technical characteristics such as long service life, high purification efficiency, low operation cost, and low maintenance cost. As the amount of pollutants such as adsorbed particulate matters accumulates continuously in the high-voltage electrostatic dust removal device, cleaning and maintenance are required. When cleaning and maintaining some high-voltage electrostatic dust removal devices, it is necessary to stop the machine, remove the internal ion box, clean and maintain it manually in an open space, dry or blow-dry it, and then install it back into the equipment. Some high-voltage electrostatic dust removal devices do not require the removal of the ion box and use an automatic cleaning device for cleaning, but the cleaning effect is not good, the efficiency cannot be fully restored after cleaning, the equipment is wet with water after cleaning, and it needs to be placed for a long time for drying before it can be operated, otherwise phenomena such as arcing, sparking, breakdown, damage to the high-voltage power supply (arcing and breakdown will impact the high-voltage power supply and cause irreversible damage to the high-voltage power supply), the high-voltage power supply starting the protection mechanism, and no output will occur. Summary of the Invention

[0003] In view of the various deficiencies of the prior art, the present invention now provides an ion box and a purification device compatible with DC power supply and vortex power supply to solve the technical problem that the purification device in the prior art needs to be frequently cleaned and maintained, affecting the purification efficiency.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] In a first aspect, the present invention provides an ion box compatible with DC power supply and vortex power supply, including a frame. Inside the frame, a dust collection zone and an ionization zone are arranged in parallel. Both the dust collection zone and the ionization zone include a plurality of plates arranged parallel to each other and at intervals. The distance between adjacent low-voltage plates or adjacent high-voltage plates in the ionization zone is 44 - 58 mm, the distance between adjacent low-voltage plates in the dust collection zone is 11 - 16 mm, each high-voltage plate is distributed between the low-voltage plates, an ionization electric field is formed inside the ionization zone, and the voltage of the ionization electric field is 12 - 19 kV.

[0006] The technical solution is further configured such that there is a first distance between the top of the plate in the dust collecting area and the frame in the vertical direction, and the first distance is greater than or equal to the distance between adjacent high-voltage plates and low-voltage plates in the dust collecting area.

[0007] The technical solution is further configured such that the edge corners of the plates in the dust collecting area are configured as a giving way structure to avoid the frame.

[0008] The present technical solution is further configured such that, in the dust collection area, an inclined line is formed between the end of the high-voltage plate close to the ionization zone and the end of the low-voltage plate close to the ionization zone, and the angle between the inclined line and the first direction is 0-60°, and the first direction is parallel to the direction from the wind inlet side to the leeward side of the ion box.

[0009] The technical solution is further configured to include a high-voltage power supply, which is electrically connected to at least the ionization zone. A dust collecting electric field is formed inside the dust collecting zone, and the voltage of the dust collecting electric field is 5-8kV.

[0010] The present technical solution is further configured as follows: the high-voltage plate in the ionization zone is electrically connected to the high-voltage end of the high-voltage power supply through a first conductive rod; a first clearance hole for the first conductive rod to pass through is provided on the low-voltage plate in the ionization zone; a second conductive rod is connected between the high-voltage plates in the dust collecting zone; a second clearance hole for the second conductive rod to pass through is provided on the low-voltage plate in the dust collecting zone; and the aperture of the first clearance hole is larger than the aperture of the second clearance hole.

[0011] The technical solution is further configured such that the voltage drop per unit distance between the edge of the first clearance hole and the first conductive rod is no greater than the voltage drop per unit distance between the edge of the second clearance hole and the second conductive rod.

[0012] The present technical solution is further configured as follows: in the ionization zone, a mounting hole for the first conductive rod to pass through is provided on the high-voltage plate, a first ionization serration is provided on the side of the high-voltage plate close to the air inlet side of the ion box, and a second ionization serration is provided on the side of the high-voltage plate close to the leeward side of the ion box, the spacing between the first ionization serration and the mounting hole in the first direction is used as the second spacing, the spacing between the second ionization serration and the mounting hole in the first direction is used as the third spacing, and the second spacing is smaller than the third spacing.

[0013] The technical solution is further configured such that the first ionization sawtooth and the second ionization sawtooth have the same structure, and are staggered along the height direction of the ion box, and the difference between the second spacing and the third spacing is 3 / 10-1 / 2 of the spacing between adjacent second ionization sawtooths.

[0014] The present technical solution is further configured such that wind guide plates are provided on the top and bottom of the low-voltage plate in the ionization zone, the wind guide plates are arranged at an angle, and the distance between the end of the wind guide plate adjacent to the air inlet side of the ion box and the frame is smaller than the distance between the end of the wind guide plate adjacent to the leeward side of the ion box and the frame.

[0015] The technical solution is further configured such that the angle between the wind guide plate and the first direction is 10°-30°, and the first direction is parallel to the direction from the wind inlet side to the leeward side of the ion box.

[0016] The technical solution is further configured such that the bottom of the low-voltage plate in the ionization zone is connected to the frame via a connecting plate, and the height of the connecting plate is not greater than the height of the lower side bar of the frame.

[0017] In the second aspect, the present invention provides a purification device, including a box and a high-voltage power supply, the sides of the box are respectively provided with an air inlet and an air outlet, the interior of the box is provided with an electrostatic dust removal unit, the electrostatic dust removal unit adopts the ion box compatible with DC power supply and vortex power supply, and the high-voltage power supply is electrically connected to the ion box compatible with DC power supply and vortex power supply.

[0018] The beneficial effects of the present invention are:

[0019] The ion box meets the dual power supply modes of high-voltage DC power supply and vortex power supply, and has a wider range of applications;

[0020] The space utilization rate is higher and the design is more reasonable. By optimizing the distance between adjacent low-voltage plates or adjacent high-voltage plates in the ionization zone, as well as the voltage parameters of the ionization electric field, electrical safety in the early and late stages of operation can be taken into account. The purification efficiency is high, the maintenance cycle is long, the user's maintenance frequency is reduced, and the maintenance cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 1 is an axial side view of an ion box compatible with DC power supply and vortex power supply according to an embodiment of the present invention;

[0022] Figure 2 1 is a left side view of an ion box compatible with DC power supply and vortex power supply according to an embodiment of the present invention;

[0023] Figure 3 1 is a right side view of an ion box compatible with DC power supply and vortex power supply according to an embodiment of the present invention;

[0024] Figure 4 1 is a top view of an ion box compatible with DC power supply and vortex power supply in an embodiment of the present invention.

[0025] In the attached figure: 1. frame; 2. ionization area; 3. dust collection area; 4. air guide plate; 5. clearance structure; 6. first ionization sawtooth; 7. second ionization sawtooth; 8. first clearance hole; 9. second clearance hole; 10. mounting hole. DETAILED DESCRIPTION

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application. In addition, the directional terms mentioned in the following embodiments, such as "upper", "lower", "left", "right", etc., are only with reference to the directions of the accompanying drawings. Therefore, the directional terms used are for illustration rather than to limit the present invention.

[0027] According to an embodiment of the present invention, there is provided an ion box compatible with DC power supply and vortex power supply. Please refer to Figure 1 , which includes a frame 1. Inside the frame 1, a dust collection area 3 and an ionization area 2 are arranged in parallel. Both the dust collection area 3 and the ionization area 2 include a plurality of plates arranged parallel to each other and spaced apart. The distance between adjacent low-voltage plates or adjacent high-voltage plates in the ionization area 2 is 44 - 58 mm. The distance between adjacent low-voltage plates in the dust collection area 3 is 11 - 16 mm. Each high-voltage plate is distributed between the low-voltage plates. An ionization electric field is formed inside the ionization area 2, and the voltage of the ionization electric field is 12 - 19 kV.

[0028] In the ion box compatible with DC power supply and vortex power supply of this embodiment, please refer to Figure 1 , the plates in the dust collection area 3 include high-voltage plates and low-voltage plates, and the tops of the high-voltage plates and the low-voltage plates are designed to be flush, and the bottoms are also flush; the frames on both sides serve as low-voltage plates; there is a first distance in the vertical direction between the tops of the plates (including high-voltage plates and low-voltage plates) in the dust collection area and the frame 1, and the first distance is greater than or equal to the distance between adjacent high-voltage plates and low-voltage plates in the dust collection area.

[0029] It should be noted that when the first distance is greater than or equal to the distance between adjacent high-voltage plates and low-voltage plates in the dust collection area, electrical safety can be ensured; the frame 1 is a metal frame body, and there needs to be a safety distance between the metal frame body and the high-voltage plates, and this safety distance is determined by the distance between the high-voltage plates and the low-voltage plates. In order to ensure the purification effect, a high voltage will be designed at a limited distance while taking safety into account; when the first distance is greater than or equal to 1 / 2 of the distance between adjacent high-voltage plates and low-voltage plates in the dust collection area, it can ensure the same safety voltage design between the high-voltage plates and the low-voltage plates, and between the high-voltage plates and the frame 1, and the space utilization rate is higher. If the first distance is less than the distance between adjacent high-voltage plates and low-voltage plates in the dust collection area, during operation, breakdown and sparking may occur between the high-voltage plates and the frame 1.

[0030] In some other embodiments, the tops and bottoms of the high-voltage plates and the low-voltage plates are not flush-designed. At this time, the distance between the top of the high-voltage plate and the frame 1 in the vertical direction only needs to be greater than or equal to the distance between adjacent high-voltage and low-voltage plates in the dust collection area, and the same technical effect can be achieved.

[0031] For the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figure 1 and Figure 2 , the edges and corners of the plates in the dust collection area 3 are set as a relief structure 5 for avoiding the frame 1.

[0032] It should be noted that setting the edges and corners of the plates in the dust collection area as the relief structure 5 for avoiding the frame 1 helps to improve the space utilization rate. The high-voltage plates and low-voltage plates in the dust collection area need to maintain a safe distance from the frame 1. If the relief structure 5 is not made, the high-voltage plates and low-voltage plates in the dust collection area will avoid the frame 1, resulting in a reduction in the area of the high-voltage plates and low-voltage plates. Furthermore, the effective adsorption area per unit volume of the dust collection area will be reduced, leading to a decrease in the purification efficiency, a decrease in the dust capacity of the ion box, and a shortening of the maintenance cycle of the ion box.

[0033] For the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figure 1 , within the dust collection area 3, an inclined line is formed between the end of the high-voltage plate close to the ionization area 2 and the end of the low-voltage plate close to the ionization area 2, and the included angle between the inclined line and the first direction is 0 - 60°, and the first direction is parallel to the direction from the air inlet side to the air outlet side of the ion box.

[0034] That is to say, within the dust collection area 3, the high-voltage plate is closer to the ionization area 2 than the low-voltage plate, and a more ideal induction voltage can be obtained. Thus, the PM2.5 purification efficiency of the ion box with the same external dimensions is higher and it is easier to meet the actual operation requirements; when the included angle < 0°, the induction voltage is low and the PM2.5 purification efficiency is low. When the included angle is greater than 60°, although the induction voltage is easily achieved, the PM2.5 purification efficiency is low. The main reason is that for an ion box with the same external volume, the effective dust collection area of the dust collection area 3 is significantly reduced, thus affecting the effective adsorption of particulate matter.

[0035] For the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figure 1 , it further includes a high-voltage power supply, and the high-voltage power supply is at least electrically connected to the ionization area 2. A dust collection electric field is formed inside the dust collection area 3, and the voltage of the dust collection electric field is 5 - 8 kV.

[0036] It should be noted that, on the premise of comprehensively considering the PM2.5 purification efficiency, electrical safety, and production cost, based on the ion box with the same external dimensions and under the condition of controllable environmental operation parameters, the inventor conducted systematic test experiments on the key parameters of the dust collection area of the ion box. The experimental results are shown in Table 1 and Table 2.

[0037] Table 1:

[0038]

[0039] It can be seen from Table 1 that when the distance between adjacent low-voltage plates in the dust collection area is less than 11 mm, for the ion box per unit volume, the material consumption in the dust collection area 3 is high, and the material cost is high, which is not conducive to cost control. At the same time, it is not conducive to controlling the electrical safety of the dust collection area 3, and phenomena such as sparking and breakdown are likely to occur in the later stage of operation. When the distance between adjacent low-voltage plates in the dust collection area is greater than 16 mm, for the ion box per unit volume, the material consumption is low, but the PM2.5 purification efficiency is low, which is not conducive to ensuring the purification efficiency.

[0040] Table 2:

[0041]

[0042] It can be seen from Table 2 that when the absolute value of the voltage in the dust collection area is less than 5 KV, the distance between adjacent low-voltage plates in the dust collection area is slightly larger, such as 14 mm and 16 mm, and the PM2.5 purification efficiency is less than 90%, and the efficiency is relatively low. When the absolute value of the voltage in the dust collection area 3 is greater than 8 KV, the distance between adjacent low-voltage plates in the dust collection area is slightly smaller, such as 13 mm and 10 mm, and the electrical safety is not guaranteed. At the same time, due to the too high absolute value of the voltage, the overall electrical design requirements for the ion box are high, which will indirectly increase the cost and after-sales maintenance cost.

[0043] In addition, on the premise of comprehensively considering the PM2.5 purification efficiency, electrical safety, and production cost, based on the ion box with the same external dimensions and under the condition of controllable environmental operation parameters, the inventor conducted systematic test experiments on the key parameters of the ionization area of the ion box. The experimental results are shown in Table 3.

[0044] Table 3:

[0045]

[0046]

[0047] It can be seen from Table 3 that when the distance between adjacent low-voltage plates in the ionization region is less than 44 mm, for the ion box per unit volume, the material consumption is high and the material cost is high, which is not conducive to cost control; when the distance between adjacent low-voltage plates in the ionization region is greater than 58 mm, for the ion box per unit volume, due to the poor air ionization effect in the ionization region and insufficient particle charging, the PM2.5 purification efficiency is low, not meeting the actual operation requirements.

[0048] When the absolute value of the voltage parameter of ionization region 2 is less than 12 KV, the air ionization effect in ionization region 2 is poor, which is not conducive to sufficient particle charging, resulting in a low PM2.5 purification efficiency and not meeting the performance requirements of actual operation; when the absolute value of the voltage parameter of ionization region 2 is greater than 19 KV, the air ionization effect in ionization region 2 is good, but it is prone to arcing, resulting in electrical insecurity and not being conducive to electrical safety control, not meeting the performance requirements of actual operation, and indirectly increasing the design cost and after-sales maintenance cost; at a narrow distance between adjacent low-voltage plates in ionization region 2 and a relatively high ionization region voltage, such as -19 KV, the ionization region is also prone to arcing, resulting in electrical insecurity and not being conducive to electrical safety control, not meeting the performance requirements of actual operation.

[0049] Specifically, the high-voltage power supply is only electrically connected to ionization region 2. Since the high-voltage plates in dust collection region 3 are closer to ionization region 2 than the low-voltage plates, a relatively high induced voltage is formed inside dust collection region 3, realizing a vortex power supply mode. The vortex power supply mode has fewer high-voltage contacts and higher safety, can be used immediately after washing, uses less ion box material, and has lower cost.

[0050] Specifically, the high-voltage power supply is electrically connected to the plates of dust collection region 3 and ionization region 2 respectively, realizing a DC power supply mode. The DC power supply mode can handle higher air volumes and purify more polluted environments.

[0051] In the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figures 1 to 3 , the high-voltage plate of ionization region 2 is electrically connected to the high-voltage end of the high-voltage power supply through a first conductive rod. A first relief hole 8 for the first conductive rod to pass through is provided on the low-voltage plate of ionization region 2. A second conductive rod is connected between the high-voltage plates of dust collection region 3. A second relief hole 9 for the second conductive rod to pass through is provided on the low-voltage plate of dust collection region 3. The aperture of the first relief hole 8 is larger than the aperture of the second relief hole 9.

[0052] In the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figures 1 to 3 , the voltage drop per unit distance between the edge of the first relief hole 8 and the first conductive rod is not greater than the voltage drop per unit distance between the edge of the second relief hole 9 and the second conductive rod.

[0053] It should be noted that the unit distance voltage drop refers to the ratio of the voltage value to the distance. In order to improve the effect of ionizing air, a relatively high absolute voltage value needs to be adopted to generate a relatively high ion generation amount, so as to effectively charge the particulate matter in the air. At the same time, a relatively high absolute voltage value will cause arc discharge in the air and require a relatively large safety distance; in the ionization zone, on the premise of taking into account electrical safety, it is necessary to improve the effect of ionizing air as much as possible, while in the dust collection zone, the electric field formed by the high- and low-voltage plates mainly completes the adsorption of air particulate matter. In the design, the voltage value in the ionization zone is increased as much as possible, and the voltage value in the dust collection zone is controlled. The distance between the low-voltage plates in the ionization zone is larger, and the number of high- and low-voltage plates in the dust collection zone is more. For the same voltage drop, the more the number, the easier it is to fail, and as the dust collection amount in the dust collection zone increases, the difficulty of electrical safety control will further increase. The design of this structure gives full play to the effects of different functional sections in the ionization zone and the dust collection zone on the premise of ensuring electrical safety, and takes into account the electrical safety in the dust collection zone in the initial stage and the later stage of operation.

[0054] For the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figures 1 to 3 , in the ionization zone 2, an installation hole 10 for the first conductive rod to pass through is opened on the high-voltage plate. A first ionization sawtooth 6 is provided on the side of the high-voltage plate close to the air inlet side of the ion box, and a second ionization sawtooth 7 is provided on the side of the high-voltage plate close to the leeward side of the ion box. The distance between the first ionization sawtooth 6 and the installation hole 10 in the first direction is used as the second distance, and the distance between the second ionization sawtooth 7 and the installation hole 10 in the first direction is used as the third distance, and the second distance is less than the third distance, that is to say, the installation hole 10 is arranged close to the first ionization sawtooth 6.

[0055] For the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figures 1 to 3 , the first ionization sawtooth 6 and the second ionization sawtooth 7 have the same structure, and the two are arranged in a staggered manner along the height direction of the ion box to solve the ionization blind area. The first ionization sawtooth 6 and the second ionization sawtooth 7 effectively charge the pollutants such as particulate matter in the passing air through a scattered shape. The difference between the second distance and the third distance is 3 / 10 - 1 / 2 of the adjacent second ionization sawtooth spacing. The closer the high-voltage plate in the ionization zone is to the dust collection zone, the higher the induced voltage, and the higher the PM2.5 purification efficiency of the ion box. However, when the distance is close to a certain extent, it is not easy to control electrical safety.

[0056] Based on the same dust collection zone, the inventor designed different ionization zones for efficiency test experiments and found that when the difference between the second distance and the third distance is 3 / 10 - 1 / 2 of the adjacent second ionization sawtooth spacing, the PM2.5 purification efficiency can be >90%, meeting the actual operation requirements. The experimental results are shown in Table 4.

[0057] Table 4:

[0058]

[0059] As can be seen from Table 4: Designing the high-voltage plate in the ionization region close to the dust collection region can increase the induced voltage, improve the purification efficiency, and extend the maintenance cycle.

[0060] For the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figures 1 to 4 , air guide plates 4 are provided at both the top and bottom of the low-voltage plate in the ionization region. The air guide plates 4 are inclined, and the distance between the end of the air guide plate 4 close to the air inlet side of the ion box and the frame is less than the distance between the end of the air guide plate 4 close to the air outlet side of the ion box and the frame.

[0061] It should be noted that the air guide plates 4 guide air into the dust collection region 3 to prevent air from escaping above the dust collection region 3.

[0062] Preferably, the included angle between the air guide plate 4 and the first direction is 10° - 30°, and the first direction is parallel to the direction from the air inlet side to the air outlet side of the ion box. The air guide plate 4 mainly functions to guide the air flow. When the included angle is < 10°, the air guiding effect is not ideal, specifically manifested as a reduction in the purification efficiency. The reason is that part of the air directly enters the uncontrolled space between the top and bottom of the plate and the frame 1, resulting in ineffective adsorption of particulate matter. When the included angle is greater than 30°, the air flow deviates too much from the original track, the resistance increases, and the purification efficiency decreases. The reason is that the air flow has a large guiding angle, resulting in a relatively high air flow velocity in the local purification area, causing uneven air flow and reducing the purification efficiency. At the same time, due to the reduction of the local ventilation area, the resistance increases significantly. Through comprehensive comparison, 10° - 30° is a better design parameter.

[0063] For the ion box compatible with DC power supply and vortex power supply in this embodiment, please refer to Figure 1 , the bottom of the low-voltage plate in the ionization region 2 is connected to the frame 1 through a connecting plate, and the height of the connecting plate is not greater than the height of the lower edge strip of the frame 1.

[0064] It should be noted that the connecting plate helps to fix the low-voltage plate in the ionization region 2. The height of the connecting plate is not greater than the height of the lower edge strip of the frame 1, achieving the effects of not blocking the wind, low resistance, and high space utilization rate.

[0065] According to an embodiment of the present invention, a purification device is provided, including a box body and a high-voltage power supply. Air inlets and air outlets are respectively provided on the sides of the box body. An electrostatic dust removal unit is provided inside the box body. The electrostatic dust removal unit uses the ion box compatible with DC power supply and vortex power supply, and the high-voltage power supply is electrically connected to the ion box compatible with DC power supply and vortex power supply.

[0066] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and cannot limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the scope of this application should still fall within the scope covered by the present invention.

Claims

1. An ion box compatible with DC power supply and vortex power supply, characterized in that, The invention comprises a frame, wherein a dust collecting area and an ionization area are arranged side by side inside the frame, and the dust collecting area and the ionization area each include a plurality of plates parallel to each other and arranged at intervals, and the spacing between adjacent low-voltage plates or adjacent high-voltage plates in the ionization area is 44-58 mm, and the spacing between adjacent low-voltage plates in the dust collecting area is 11-16 mm, and each high-voltage plate is distributed between the low-voltage plates. An ionization electric field is formed inside the ionization area, and the voltage of the ionization electric field is 12-19 kV. A dust collecting electric field is formed inside the dust collecting area, and the voltage of the dust collecting electric field is 5-8 kV. The high-voltage power supply is electrically connected only to the ionization area. The high-voltage plate in the dust collecting area is closer to the ionization area than the low-voltage plate, and a higher induced voltage is formed inside the dust collecting area. In the dust collection area, an inclined line is formed between the end of the high-voltage plate close to the ionization zone and the end of the low-voltage plate close to the ionization zone, and the angle between the inclined line and the first direction is 0-60°, and the first direction is parallel to the direction from the windward side to the leeward side of the ion box.

2. The ion box compatible with DC power supply and vortex power supply according to claim 1, wherein There is a first distance between the top of the plate in the dust collecting area and the frame in the vertical direction, and the first distance is greater than or equal to the distance between adjacent high-voltage plates and low-voltage plates in the dust collecting area.

3. An ion box compatible with DC power supply and vortex power supply according to claim 2, characterized in that, The edge corners of the plates in the dust collection area are arranged as a give-way structure to avoid the frame.

4. An ion box compatible with DC power supply and vortex power supply according to claim 1, characterized in that, The high-voltage plate in the ionization zone is electrically connected to the high-voltage end of the high-voltage power supply through a first conductive rod, and a first clearance hole for the first conductive rod to pass through is provided on the low-voltage plate in the ionization zone. A second conductive rod is connected between the high-voltage plates in the dust collecting zone, and a second clearance hole for the second conductive rod to pass through is provided on the low-voltage plate in the dust collecting zone. The aperture of the first clearance hole is larger than the aperture of the second clearance hole.

5. An ion box compatible with DC power supply and vortex power supply according to claim 4, characterized in that, The voltage drop per unit distance between the edge of the first clearance hole and the first conductive rod is no greater than the voltage drop per unit distance between the edge of the second clearance hole and the second conductive rod.

6. The ion box compatible with DC power supply and vortex power supply according to claim 4, characterized in that In the ionization zone, a mounting hole for the first conductive rod to pass through is provided on the high-voltage plate, a first ionization sawtooth is provided on the side of the high-voltage plate close to the air inlet side of the ion box, and a second ionization sawtooth is provided on the side of the high-voltage plate close to the leeward side of the ion box. The distance between the first ionization sawtooth and the mounting hole in the first direction serves as the second distance, and the distance between the second ionization sawtooth and the mounting hole in the first direction serves as the third distance, and the second distance is smaller than the third distance.

7. An ion box compatible with DC power supply and vortex power supply according to claim 6, characterized in that, The first ionization sawtooth and the second ionization sawtooth have the same structure and are staggered along the height direction of the ion box. The difference between the second spacing and the third spacing is 3 / 10-1 / 2 of the spacing between adjacent second ionization sawtooths.

8. An ion box compatible with DC power supply and vortex power supply according to claim 1, characterized in that, The top and bottom of the low-voltage plate in the ionization zone are both provided with wind guide plates, which are arranged at an angle, and the distance between the end of the wind guide plate near the wind inlet side of the ion box and the frame is smaller than the distance between the end of the wind guide plate near the leeward side of the ion box and the frame.

9. An ion box compatible with DC power supply and vortex power supply according to claim 8, characterized in that, The angle between the air guide plate and the first direction is 10°-30°, and the first direction is parallel to the direction from the wind inlet side to the leeward side of the ion box.

10. An ion box compatible with DC power supply and vortex power supply according to claim 1, characterized in that, The bottom of the low-voltage plate of the ionization zone is connected to the frame through a connecting plate, and the height of the connecting plate is not greater than the height of the lower side bar of the frame.

11. A purification device, comprising a box body and a high-voltage power supply. Air inlets and air outlets are respectively arranged on the side surfaces of the box body. It is characterized in that, An electrostatic dust removal unit is provided inside the box body. The electrostatic dust removal unit uses an ion box compatible with DC power supply and vortex power supply according to any one of claims 1-10, and the high-voltage power supply is electrically connected to the ion box compatible with DC power supply and vortex power supply.

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