A dust collection component, an electrostatic dust removal module and an air purification device

Abstract

The present invention provides a dust collection component, an electrostatic dust removal module, and an air purification device. The dust collection component includes an ionization electrode and a plurality of active areas sequentially arranged in a direction away from the ionization electrode, wherein the active area is provided with a plurality of collecting electrodes connected to the same power supply end; the power supply ends in the plurality of active areas are grounded in sequence to achieve dust accumulation. With such a design, by adopting the method of sequentially grounding and power supply in different zones, the collecting electrodes in the three active zones accumulate dust in different zones at different stages. On the basis of increasing the dust accumulation area, the electric field in each dust accumulation area is made stronger and more uniform, so that the dust is evenly distributed in the plurality of dust accumulation areas, and finally the cleaning time is extended. Moreover, through uniform dust accumulation, the problem of cleaning difficulty caused by uneven dust accumulation is reduced. In addition, by utilizing spatial arrangement, on the basis of the same dust accumulation area, that is, the same number of collecting electrodes, the distance between the collecting electrodes is increased, thereby ensuring the cross-sectional area through which the airflow passes, thereby reducing the resistance.

Description

Technical Field

[0001] The present invention relates to the technical field of air purification devices, and in particular to a dust collection component, an electrostatic dust removal module and an air purification device. Background Art

[0002] In recent years, as people pay more attention to respiratory health, air purifiers or appliances with purification functions have begun to occupy an important position in the home appliance market. Among them, appliances with electrostatic dust removal modules are widely used due to their advantages such as no consumables and low wind resistance.

[0003] Existing electrostatic dust removal modules usually use a two-electrode technology consisting of an ionizing electrode and a collecting electrode. Specifically, the discharge of the ionizing electrode charges the dust pollutants in the air and forms a strong electric field through the surface of the collecting electrode. The charged particulate pollutants are adsorbed on the collecting electrode and separated from the airflow under the action of the Coulomb force of the electric field, thereby achieving the purpose of dust removal and air purification. However, for the two-electrode structure, the guide plate at the tail of the collecting electrode has almost no electric field distribution and does not play a role in dust accumulation. In other words, the dust accumulates mainly on the surface of the collecting electrode, and the dust accumulation area that plays a collecting role is very limited. However, the limited dust accumulation area makes the dust easily saturated, resulting in frequent cleaning, which affects the user experience.

[0004] In view of this, the prior art usually increases the dust accumulation area by increasing the number of collecting electrodes. Although simply increasing the number of collecting electrodes can increase the dust accumulation area, it still has many defects. First, due to space limitations, the increase in the number of collecting electrodes will lead to a decrease in the spacing. If the spacing is too close, the average electric field strength on the surface of the collecting electrodes will be greatly reduced, and the ability to capture dust will be reduced. Secondly, because they are too dense, the cross-sectional area through which the airflow passes is reduced, resulting in increased resistance to the airflow. Thirdly, the increase in the number of collecting electrodes causes the electric field on the surface of the collecting electrodes at different positions to increase inconsistently, resulting in uneven dust accumulation and increased difficulty in cleaning. Finally, because the arrangement is too dense, it is obvious that the difficulty of cleaning is increased. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the contradiction between the collection area and the dust capture capacity, wind resistance and cleaning difficulty in the prior art, thereby providing a dust collection component, an electrostatic dust removal module and an air purification device.

[0006] The present invention provides a dust collection component, comprising an ionization electrode and a plurality of active areas sequentially arranged in a direction away from the ionization electrode, wherein the active areas are provided with a plurality of collecting electrodes connected to the same power supply end; the power supply ends in the plurality of active areas are sequentially grounded to realize dust accumulation.

[0007] Optionally, when dust accumulates in one of the active areas, the power supply ends of the remaining active areas are not connected to a potential.

[0008] Optionally, when dust accumulates in one of the active areas, the active area with accumulated dust is connected to an intermediate voltage lower than the ionization voltage of the ionization electrode through the power supply end; the power supply end of the active area without dust accumulation is not connected to the potential.

[0009] Optionally, the collecting electrodes in the active area are evenly spaced and arranged along a straight line, and the arrangement direction is perpendicular to the arrangement direction of the plurality of active areas.

[0010] Optionally, the collecting electrodes of adjacent active areas are staggered in the arrangement direction of the plurality of active areas.

[0011] Optionally, the active areas include three adjacently arranged active areas.

[0012] Optionally, it includes a controller which controls the power supply ends of the active areas without dust accumulation to be grounded in sequence and the active areas with dust accumulation to be connected to the intermediate voltage at time intervals.

[0013] Optionally, a controller is included to control the power supply ends of the active areas without dust accumulation to be grounded in sequence and the active areas with dust accumulation to be connected to the intermediate voltage according to the dust accumulation situation of the active areas. The present invention also provides an electrostatic dust removal module, including any of the dust accumulation components described above.

[0014] The present invention also provides an air purification device, comprising any of the dust collection components described above.

[0015] The technical solution of the present invention has the following advantages:

[0016] The dust collection component provided by the present invention adopts the method of grounding in sequence by partition, so that the collecting electrodes in the three action areas accumulate dust in different stages, and on the basis of increasing the dust accumulation area, the electric field in each dust accumulation area is made stronger and more uniform, so that the dust is evenly distributed in multiple dust accumulation areas, and finally the cleaning time is extended, and the cleaning difficulty caused by uneven dust accumulation is reduced through uniform dust accumulation. And by using spatial arrangement, on the basis of the same dust accumulation area, that is, the same number of collecting electrodes, the distance between the collecting electrodes is increased, and the cross-sectional area through which the airflow passes is guaranteed, thereby reducing the resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a dust collection assembly provided in a first embodiment of the present invention;

[0019] Figure 2 for Figure 1 Schematic diagram of the arrangement of the active area. DETAILED DESCRIPTION

[0020] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Figure 1 to Figure 2 The embodiment of a dust collection component provided by the present invention is shown. The dust collection component includes an ionization electrode, which is powered by DC or AC high voltage, and multiple ionization electrodes can be arranged under the same power supply end.

[0022] Please refer to Figure 2 There are three action zones arranged in sequence in a direction away from the ionization electrode, namely the first action zone Z1, the second action zone Z2 and the third action zone Z3. Figure 1 and Figure 2 It can be seen that in each active area, multiple collecting electrodes connected to the same power supply end are arranged. Multiple collecting electrodes in the active area are evenly spaced along a straight line, and the arrangement direction is perpendicular to the arrangement direction of the three active areas. Multiple collecting electrodes in the active area are connected to the same conductor structure, which is connected to the power supply end, so that each collecting electrode is an equipotential electrode. In order to increase the dust accumulation area without increasing wind resistance, the collecting electrodes in adjacent active areas are staggered in the arrangement direction of the three active areas.

[0023] The power supply ends of the first active zone Z1 , the second active zone Z2 and the third active zone Z3 are respectively the first power supply end D1 , the second power supply end D2 and the third power supply end D3 .

[0024] The working process and working principle of the dust collection component are as follows:

[0025] The first power supply terminal D1 is grounded, and the second power supply terminal D2 and the third power supply terminal D3 are not connected to the potential; at this time, an ionization electric field is generated between the ionization electrode and the collecting electrode in the first action zone Z1, driving the dust to move to the first action zone Z1 and finally being captured by the collecting electrode in the first action zone Z1 to complete dust accumulation. The first action zone Z1 is a dust accumulation zone where dust is being accumulated. The second action zone Z2 and the third action zone Z3 have no electric field distribution and belong to the same clean pre-dust accumulation zone without dust accumulation.

[0026] After the first time interval, the first power supply terminal D1 is connected to an intermediate voltage not higher than the ionization voltage, the second power supply terminal D2 is grounded, and the third power supply terminal D3 is not connected to the potential. At this time, an ionization electric field is generated between the ionization electrode and the collector in the second action zone Z2; there is no electric field on the surface of the collector in the first action zone Z1, and because there is a potential difference between the collectors in the first action zone Z1 and the second action zone Z2, the collector in the first action zone Z1 appears in the reverse position and points to the collector in the second action zone Z2. The reverse electric field and the ionization electric field work together to drive the dust to move to the second action zone Z2, and finally it is captured by the collector in the second action zone Z2 to complete the dust accumulation. The second action zone Z2 is a dust accumulation zone where dust is being accumulated, the first action zone Z1 is a dust accumulation zone where dust has already accumulated, and the third action zone Z3 is a clean pre-dust accumulation zone without dust accumulation.

[0027] After the second time interval, the first power supply terminal D1 and the second power supply terminal D2 are connected to the intermediate voltage, and the third power supply terminal D3 is grounded; at this time, an ionization electric field is generated between the ionization electrode and the collector in the third action zone Z3; there is no electric field on the surface of the collector in the first action zone Z1 and the second action zone Z2, and because there is a potential difference between the collectors in the first action zone Z1 and the second action zone Z2 and the collector in the third action zone Z3, a reverse electric field pointing to the collector in the third action zone Z3 appears in the reverse position of the collector in the first action zone Z1 and the second action zone Z2, and the reverse electric field and the ionization electric field work together to drive the dust to move to the third action zone Z3, and finally the dust is captured by the collector in the third action zone Z3 to complete the dust accumulation. The third action zone Z3 is a dust accumulation zone where dust is being accumulated, and the first action zone Z1 and the second action zone Z2 are dust accumulation zones where dust has already accumulated.

[0028] From the above description, it can be seen that by adopting zoned grounding in sequence, the collecting electrodes in the three active areas accumulate dust in different stages. On the basis of increasing the dust accumulation area, the electric field in each dust accumulation area is made stronger and more uniform, so that the dust is evenly distributed in multiple dust accumulation areas, ultimately extending the cleaning time, and through uniform dust accumulation, the problem of cleaning difficulty caused by uneven dust accumulation is reduced.

[0029] It should be noted that there is no restriction on the grounding order of the action areas for the partitioned grounding, and it can be freely selected according to actual conditions.

[0030] Moreover, by connecting an intermediate voltage lower than the ionization voltage to the collecting electrode in the dust accumulated area, it acts together with the ionization electric field on the collecting electrode in the dust accumulated area, while preventing dust from moving toward the collecting electrode in the dust accumulated area, and providing the current dust accumulated area with a sufficient collecting electric field through electric field superposition, especially when the dust accumulated area is too far away from the ionization electrode.

[0031] The dust accumulation component also includes a controller, which controls the power supply end of the active area without dust accumulation to be grounded in sequence and the power supply end of the active area with dust accumulation to be connected to the intermediate voltage at time intervals. The control of grounding and connecting to the intermediate voltage can be realized by using two controllers.

[0032] As another implementation, multiple action areas may be set according to actual conditions.

[0033] As another embodiment, the collecting electrode in the dust accumulated area may not be connected to an electrical potential.

[0034] As another embodiment, the electrode groups are not limited to being arranged in rows, and can be connected to the same power supply end to form an equipotential area.

[0035] As another embodiment, the grounding of the power supply end of the pre-dust accumulation zone can be automatically switched according to the dust accumulation situation in the current dust accumulation zone. Specifically, it includes a controller, which controls the grounding of the power supply end of the active zone without dust accumulation and the access to the intermediate voltage of the power supply end of the active zone with dust accumulation according to the dust accumulation situation in the current dust accumulation zone. That is, when the dust collected on the surface of the collecting electrode in the current dust accumulation zone is close to saturation and the dust accumulation capacity decreases, the switching of the dust accumulation zone is achieved by switching to the grounding of the power supply end of the active zone without dust accumulation. The control of corresponding grounding and access to the intermediate voltage can be achieved by two controllers.

[0036] The present application also provides an electrostatic dust removal module embodiment, which includes the dust collection component in the above embodiment.

[0037] The present application also provides an embodiment of an air purification device, which includes the dust collection component in the above embodiment.

[0038] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A dust collection component, characterized in that: It comprises an ionizing electrode and a plurality of active areas arranged in sequence in a direction away from the ionizing electrode, wherein the active area is provided with a plurality of collecting electrodes connected to the same power supply end; the power supply ends in the plurality of active areas are grounded in sequence to realize dust accumulation; It comprises three adjacently arranged action areas, namely, a first action area, a second action area and a third action area; The power supply ends of the first active area, the second active area and the third active area are respectively the first power supply end, the second power supply end and the third power supply end; in each active area, a plurality of collecting electrodes connected to the same power supply end are arranged; The multiple collecting electrodes in the active area are evenly spaced and arranged along a straight line, and the arrangement direction is perpendicular to the arrangement direction of the three active areas; Multiple collectors in the active area are connected to the same conductor structure, which is connected to the power supply terminal, so that each collector is an equipotential electrode; The collecting electrodes in adjacent active areas are staggered in the arrangement direction of the three active areas; First, the first power supply terminal is grounded, and the second power supply terminal and the third power supply terminal are not connected to the potential; the first action zone Z1 is a dust accumulation zone where dust is accumulating, and the second action zone and the third action zone have no electric field distribution and belong to the clean pre-dust accumulation zone without dust accumulation; After the first time interval, the first power supply terminal is connected to an intermediate voltage lower than the ionization voltage, the second power supply terminal is grounded, and the third power supply terminal D3 is not connected to a potential; There is a potential difference between the collectors in the first active region and the collectors in the second active region, so that the collector in the first active region has a reverse electric field pointing to the collector in the second active region at a reverse position; The second action area is a dust accumulation area where dust is being accumulated, the first action area is a dust accumulation area where dust has already accumulated, and the third action area is a clean pre-dust accumulation area where dust has not accumulated; After the second time interval, the first power supply terminal and the second power supply terminal are connected to the intermediate voltage, and the third power supply terminal is grounded; there is a potential difference between the collector of the first active area and the collector of the second active area and the collector of the third active area, so that the collector of the first active area and the collector in the second active area have a reverse electric field pointing to the collector in the third active area at the reverse position; The third action area is a dust accumulation area where dust is being accumulated, and the first action area and the second action area are dust accumulation areas where dust has already accumulated; An intermediate voltage lower than the ionization voltage is connected to the collecting electrode in the dust accumulation area, so that it acts together with the ionization electric field on the collecting electrode in the dust accumulation area, while preventing dust from moving toward the collecting electrode in the dust accumulation area, and providing a collecting electric field to the current dust accumulation area through electric field superposition.

2. The dust collection assembly according to claim 1, characterized in that: When dust accumulates in one of the active areas, the active area with dust accumulation is connected to an intermediate voltage lower than the ionization voltage of the ionization electrode through the power supply end; the power supply end of the active area without dust accumulation is not connected to the potential.

3. The dust collection assembly according to claim 1, characterized in that: The collecting electrodes in the active area are evenly spaced and arranged along a straight line, and the arrangement direction is perpendicular to the arrangement direction of the multiple active areas.

4. The dust collection assembly according to any one of claims 1 to 3, characterized in that: The collecting electrodes of adjacent active areas are staggered in the arrangement direction of the plurality of active areas.

5. The dust collection assembly according to claim 4, characterized in that: The invention comprises a controller which controls the power supply end of the active area without dust accumulation to be grounded in sequence and the active area with dust accumulation to be connected to the intermediate voltage at time intervals.

6. The dust collection assembly according to claim 5, characterized in that: The invention comprises a controller which controls the power supply end of the active area without dust accumulation to be grounded in sequence and the active area with dust accumulation to be connected to the intermediate voltage according to the dust accumulation situation of the active area.

7. An electrostatic dust removal module, characterized in that: The utility model comprises the dust collection component according to any one of claims 1 to 6.

8. An air purification device, characterized in that: The utility model comprises the dust collection component according to any one of claims 1 to 6.

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