Ionization box compatible with direct-current power supply and vortex power supply and purification device

Abstract

An ionization box compatible with a direct-current power supply and a vortex power supply and a purification device, relating to the technical field of air purification. The ionization box comprises a frame (1), wherein a dust collection zone (3) and an ionization zone (2) are provided side by side inside the frame (1), and the dust collection zone (3) and the ionization zone (2) both comprise a plurality of electrode plates arranged in parallel and at intervals. The distance between adjacent low-voltage electrode plates or adjacent high-voltage electrode plates in the ionization zone (2) is 44-58 mm, and the distance between adjacent low-voltage electrode plates in the dust collection zone (3) is 11-16 mm. Each high-voltage electrode plate is distributed between the low-voltage electrode plates, an ionization electric field is formed inside the ionization zone (2), and the voltage of the ionization electric field is 12-19 kV. The present application can solve the technical problem in the prior art that a purification device requires frequent cleaning and maintenance, which affects the purification efficiency.

Description

Ion box and purification device compatible with DC power supply and vortex power supply Technical Field

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

[0002] Currently, mainstream air purification technologies are divided into filtration and electrostatic technologies. Electrostatic technology charges airborne particles through the ionization zone. These charged particles are then attracted by the electric field formed in the dust collection zone, completing the purification process. Various high-voltage electrostatic precipitators designed using electrostatic principles can purify a wide range of flow rates and a wide range of particulate matter. They offer relatively stable operation in varying temperature and humidity environments, making them suitable for household, commercial, industrial, and specialized applications. They feature long service life, high purification efficiency, low operating costs, and low maintenance. As the amount of adsorbed particulate matter and other pollutants accumulates, high-voltage electrostatic precipitators require cleaning and maintenance. Some high-voltage electrostatic precipitators require shutdown, removal of the internal ion chamber, and manual cleaning and maintenance in an open area. The ion chamber must then be air-dried or blown dry before being reinstalled. Some high-voltage electrostatic dust removal devices do not need to remove the ion box and are cleaned using an automatic cleaning device. However, the cleaning effect is poor and the efficiency cannot be fully restored after cleaning. The equipment is damp and has water after cleaning and needs to be placed for a long time to dry before it can be operated. Otherwise, arcing, sparking, breakdown, high-voltage power supply damage (arcing and breakdown will impact the high-voltage power supply and cause irreversible damage to the high-voltage power supply), high-voltage power supply protection mechanism startup, no output, and other phenomena may occur.

[0003] Summary of the Invention

[0004] In view of the various deficiencies in the existing technology, an ion box and purification device compatible with DC power supply and vortex power supply are proposed to solve the technical problem that the purification device in the existing technology needs to be frequently cleaned and maintained, which affects the purification efficiency.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] In a first aspect, the present invention provides an ion box compatible with DC power supply and vortex power supply, comprising a frame, wherein a dust collection area and an ionization area are arranged side by side inside the frame, and the dust collection area and the ionization area each include a plurality of parallel and spaced plates. 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 collection area 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, and the voltage of the ionization electric field is 12-19 kV.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] The beneficial effects of the present invention are:

[0020] The ion box meets the dual power supply modes of high-voltage DC power supply and vortex power supply, with a wider range of applications; higher space utilization and more reasonable design; 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, it takes into account the electrical safety in the early and late stages of operation; high purification efficiency, long maintenance cycle, reduced user maintenance frequency, and low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 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] FIG2 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] FIG3 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] FIG4 is a top view of an ion box compatible with DC power supply and vortex power supply according to 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] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0027] According to an embodiment of the present invention, an ion box compatible with DC power supply and vortex power supply is provided, please refer to Figure 1, including a frame 1, a dust collection area 3 and an ionization area 2 are arranged side by side inside the frame 1, the dust collection area 3 and the ionization area 2 both include a plurality of parallel and spaced plates, the spacing between adjacent low-voltage plates or adjacent high-voltage plates located in the ionization area 2 is 44-58 mm, the spacing between adjacent low-voltage plates located 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 of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figure 1. The plates in the dust collecting 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 designed to be flush; the frames on both sides play the role of low-voltage plates; there is a first distance between the tops of the plates in the dust collecting area (including high-voltage plates and low-voltage plates) and the frame 1 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.

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

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

[0031] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figures 1 and 2. The edge corners of the electrode plate in the dust collection area 3 are set as a yielding structure 5 that avoids the frame 1.

[0032] It should be noted that the plate corners in the dust collection area are provided with a relief structure 5 that avoids the frame 1, which helps to improve space utilization. The high-voltage plate and low-voltage plate in the dust collection area need to maintain a safe distance from the frame 1. If the relief structure 5 is not provided, the high-voltage plate and low-voltage plate in the dust collection area will avoid the frame 1, resulting in a reduction in the area of ​​the high-voltage plate and the low-voltage plate. In turn, the effective adsorption area per unit volume of the dust collection area will be reduced, resulting in a reduction in purification efficiency, a reduction in the dust holding capacity of the ion box, and a shortened maintenance cycle of the ion box.

[0033] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figure 1. In the dust collection area 3, an inclined line is formed between the end of the high-voltage plate close to the ionization zone 2 and the end of the low-voltage plate close to the ionization zone 2. 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.

[0034] That is to say, in the dust collecting area 3, the high-voltage plate is closer to the ionization area 2 than the low-voltage plate, and a more ideal induced voltage can be obtained, so that 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 needs; when the angle is less than 0°, the induced voltage is low and the PM2.5 purification efficiency is low. When the angle is greater than 60°, although the induced voltage is easy to achieve, the PM2.5 purification efficiency is low. The main reason is that for ion boxes with the same external volume, the effective dust collecting area of ​​the dust collecting area 3 is significantly reduced, which affects the effective adsorption of particulate matter.

[0035] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figure 1, it also includes a high-voltage power supply, which is electrically connected to at least the ionization zone 2, and a dust collecting electric field is formed inside the dust collecting zone 3, and the voltage of the dust collecting electric field is 5-8kV.

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

[0037] Table 1:

[0038] Table 1 shows that when the spacing between adjacent low-voltage plates in the dust collection area is less than 11 mm, the material usage and cost of dust collection area 3 per unit volume of the ion box are high, which is not conducive to cost control. This also hinders the control of electrical safety in dust collection area 3, and sparks and breakdowns are likely to occur in later stages of operation. When the spacing between adjacent low-voltage plates in the dust collection area is greater than 16 mm, the material usage per unit volume of the ion box is low, but the PM2.5 purification efficiency is low, which is not conducive to ensuring purification efficiency.

[0039] Table 2:

[0040] Table 2 shows that when the absolute value of the voltage in the dust collection zone is less than 5 kV, the spacing between adjacent low-voltage plates in the dust collection zone is slightly larger, such as 14 mm or 16 mm, resulting in a PM2.5 purification efficiency of less than 90%, which is relatively low. When the absolute value of the voltage in dust collection zone 3 is greater than 8 kV, the spacing between adjacent low-voltage plates in the dust collection zone is slightly smaller, such as 13 mm or 10 mm, which is electrically unsafe. Furthermore, the excessively high absolute value of the voltage places high demands on the overall electrical design of the ion box, indirectly increasing costs and after-sales maintenance.

[0041] In addition, the inventors conducted a systematic test experiment on the key parameters of the ionization zone of the ion box based on ion boxes of the same external dimensions and under controllable environmental operating parameters, taking into account PM2.5 purification efficiency, electrical safety, and production cost. The experimental results are shown in Table 3.

[0042] Table 3:

[0043] It can be seen from Table 3 that when the distance between adjacent low-voltage plates in the ionization zone is less than 44 mm, the material consumption and material cost per unit volume of the ion box are high, which is not conducive to cost control. When the distance between adjacent low-voltage plates in the ionization zone is greater than 58 mm, for the unit volume of the ion box, the ionization zone does not ionize the air effectively, the particulate matter is not fully charged, resulting in low PM2.5 purification efficiency, which does not meet actual operation needs.

[0044] When the absolute value of the voltage parameter of ionization zone 2 is less than 12KV, the air ionization effect of ionization zone 2 is poor, which is not conducive to sufficient charging of particulate matter, resulting in low PM2.5 purification efficiency, and cannot meet the performance requirements of actual operation; when the absolute value of the voltage parameter of ionization zone 2 is greater than 19KV, the air ionization effect of ionization zone 2 is good, but it is easy to ignite, which is electrically unsafe, not conducive to electrical safety control, and cannot meet the performance requirements of actual operation, and will indirectly increase the design cost and after-sales maintenance cost; in the ionization zone 2, when the distance between adjacent low-voltage plates is narrow and the ionization zone voltage is higher, such as -19KV, the ionization zone is also easy to ignite, which is electrically unsafe, not conducive to electrical safety control, and cannot meet the performance requirements of actual operation.

[0045] Specifically, the high-voltage power supply is electrically connected only to ionization zone 2. Because the high-voltage plate in dust collection zone 3 is closer to ionization zone 2 than the low-voltage plate, a higher induced voltage is generated within dust collection zone 3, enabling vortex power supply mode. This vortex power supply mode reduces the number of high-voltage contacts, improves safety, enables ready-to-use cleaning, and reduces the use of ion box materials, resulting in lower costs.

[0046] Specifically, the high-voltage power supply is electrically connected to the plates of the dust collection area 3 and the ionization area 2, respectively, to realize a DC power supply mode. The DC power supply mode can cope with higher air volume and more polluted environment purification.

[0047] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figures 1 to 3. The high-voltage plate of the ionization zone 2 is electrically connected to the high-voltage end of the high-voltage power supply through a first conductive rod, and a first clearance hole 8 for the first conductive rod to pass through is provided on the low-voltage plate of the ionization zone 2. A second conductive rod is connected between the high-voltage plates of the dust collecting zone 3, and a second clearance hole 9 for the second conductive rod to pass through is provided on the low-voltage plate of the dust collecting zone 3. The aperture of the first clearance hole 8 is larger than the aperture of the second clearance hole 9.

[0048] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figures 1 to 3. The voltage drop per unit distance between the edge of the first clearance hole 8 and the first conductive rod is not greater than the voltage drop per unit distance between the edge of the second clearance hole 9 and the second conductive rod.

[0049] It should be noted that the voltage drop per unit distance refers to the ratio of voltage to distance. To maximize air ionization effectiveness, a higher absolute voltage is required to generate a higher ion yield, effectively charging airborne particles. However, higher absolute voltages can lead to arcing in the air, necessitating a higher safety distance. In the ionization zone, ionization effectiveness must be maximized while maintaining electrical safety. In the dust collection zone, the electric field formed by the high and low voltage plates primarily serves to adsorb airborne particles. The design maximizes the voltage in the ionization zone while controlling the voltage in the dust collection zone. The spacing 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 greater. For the same voltage drop, a greater number of plates increases the risk of failure. Furthermore, as the dust collection volume in the dust collection zone increases, the difficulty of electrical safety control increases. This structural design maximizes the effectiveness of the different functional sections of the ionization and dust collection zones while ensuring electrical safety, ensuring electrical safety in the dust collection zone both during initial and later stages of operation.

[0050] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figures 1 to 3. In the ionization zone 2, a mounting hole 10 for the first conductive rod to pass through is provided on the high-voltage plate, and 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 spacing between the first ionization sawtooth 6 and the mounting hole 10 in the first direction is used as the second spacing, and the spacing between the second ionization sawtooth 7 and the mounting hole 10 in the first direction is used as the third spacing, and the second spacing is smaller than the third spacing, that is, the mounting hole 10 is provided close to the first ionization sawtooth 6.

[0051] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, 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 staggered along the height direction of the ion box to solve the ionization blind spot. The first ionization sawtooth 6 and the second ionization sawtooth 7 form an effective charge for pollutants such as particulate matter passing through the air through a scattering shape. The difference between the second spacing and the third spacing is 3 / 10-1 / 2 of the spacing between adjacent second ionization sawtooths. The closer the high-voltage plate in the ionization zone is to the dust collecting 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, electrical safety is not easy to control.

[0052] Based on the same dust collection area, the inventors designed different ionization zones to conduct efficiency test experiments and found that when the difference between the second spacing and the third spacing is 3 / 10-1 / 2 of the adjacent second ionization sawtooth spacing, the PM2.5 purification efficiency can be greater than 90%, which meets the actual operation needs. The experimental results are shown in Table 4.

[0053] Table 4:

[0054] It can be seen from Table 4 that the high-voltage plate in the ionization zone is designed to be close to the dust collection zone, which can increase the induced voltage, improve the purification efficiency, and increase the maintenance cycle.

[0055] In the ion box of this embodiment that is compatible with DC power supply and vortex power supply, please refer to Figures 1 to 4. The top and bottom of the low-voltage plate in the ionization zone are provided with wind guide plates 4. The wind guide plates 4 are arranged at an angle, and the distance between the end of the wind guide plate 4 near the air inlet side of the ion box and the frame is smaller than the distance between the end near the leeward side of the ion box and the frame.

[0056] It should be noted that the air guide plate 4 guides the air into the dust collecting area 3 to prevent the air from escaping from above the dust collecting area 3 .

[0057] Preferably, the 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 leeward side of the ion box. The air guide plate 4 mainly guides the airflow. When the angle is less than 10°, the air guiding effect is not ideal, which is specifically manifested in a reduction in 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 the inability of particulate matter to be effectively adsorbed. When the angle is greater than 30°, the airflow deviates too much from the original trajectory, the resistance increases, and the purification efficiency decreases. The reason is that the airflow has a large guiding angle, which leads to a high air flow rate in the local purification area, resulting in uneven airflow and reduced purification efficiency. At the same time, due to the reduction in local ventilation area, the resistance increases significantly. Comprehensively speaking, 10°-30° is a relatively good design parameter.

[0058] In the ion box compatible with DC power supply and vortex power supply of this embodiment, please refer to Figure 1. The bottom of the low-voltage plate of the ionization zone 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 side bar of the frame 1.

[0059] It should be noted that the connecting plate helps to fix the low-voltage plate of the ionization zone 2. The height of the connecting plate is not greater than the height of the lower edge strip of the frame 1, so as to achieve the effects of no wind blocking, low resistance and high space utilization.

[0060] According to an embodiment of the present invention, a purification device is provided, including a housing and a high-voltage power supply, wherein the sides of the housing are respectively provided with an air inlet and an air outlet, and an electrostatic dust removal unit is provided inside the housing, wherein 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.

[0061] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of 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, wherein the dust collecting area and the ionization area both comprise a plurality of plates which are parallel to each other and arranged at intervals, wherein 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, and an ionization electric field is formed inside the ionization area, and the voltage of the ionization electric field is 12-19 kV.

2. The ion box compatible with DC power supply and vortex power supply according to claim 1, characterized in 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.

3. The 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. The ion box compatible with DC power supply and vortex power supply according to claim 1, characterized in that: It also includes 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.

5. The ion box compatible with DC power supply and vortex power supply according to claim 4, characterized in 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 windward side to the leeward side of the ion box.

6. The 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.

7. The ion box compatible with DC power supply and vortex power supply according to claim 6, 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.

8. The ion box compatible with DC power supply and vortex power supply according to claim 6, 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.

9. The ion box compatible with DC power supply and vortex power supply according to claim 8, 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.

10. The 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 windward side of the ion box and the frame is smaller than the distance between the end near the leeward side of the ion box and the frame.

11. The ion box compatible with DC power supply and vortex power supply according to claim 10, 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.

12. The 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.

13. A purification device, comprising a box and a high-voltage power supply, wherein the sides of the box are respectively provided with an air inlet and an air outlet, characterized in that: An electrostatic dust removal unit is provided inside the box, and the electrostatic dust removal unit adopts the ion box compatible with DC power supply and vortex power supply according to any one of claims 1-12, 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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