Purification and variable frequency system and method

1. An air cleaning apparatus comprising an ion generation electrode, a collecting electrode, and a support portion,

wherein:

the ion generation electrode is configured to apply a high-voltage to thereby form a high-voltage electric field between the collecting electrode and the ion generation electrode;

a passage is formed between the ion generation electrode and the collecting electrode along a direction of the high-voltage electric field;

the support portion supports at edges of the ion generation electrode and the collecting electrode, and is configured to provide electrical isolation and mechanical support for the ion generation electrode and the collecting electrode;

a surface of the support portion between the ion generation electrode and the collecting electrode comprises a surface coating layer with a property of resisting ion bombardment and accidental arcing;

wherein the support portion has an arc-shaped concave portion facing an ion movement trajectory, or the surface of the support portion is disposed away from an ion bombardment region.

2. The apparatus of claim 1 , wherein the surface coating layer comprises a hydrophobic migration and electrically insulating material.

3. The apparatus of claim 2 , wherein the surface coating layer comprises one or more of: a room temperature vulcanized (RTV) series material, a rubber-based material, or a ceramic-based material.

4. The apparatus of claim 1 , wherein the surface coating layer is made of one or more materials with a property of reducing accumulation of carbon layers to thereby reduce conductive channels upon arc burning of the surface coating layer.

5. The apparatus of claim 1 , wherein the surface coating layer is formed by spraying, or applying an adhesive to the surface of the support portion.

6. The apparatus of claim 1 , wherein the support portion comprises a hydrophobic migration and electrically insulating material.

7. The apparatus of claim 6 , wherein the support portion is formed by injection or extrusion molding.

8. The apparatus of claim 1 , wherein the support portion and the surface coating layer are composed of a same material.

9. A high-voltage ionic purification system comprising the air cleaning apparatus of claim 1 and a transformer frequency adjusting system, wherein:

the transformer frequency adjusting system including a frequency storage cell, a control module, and a drive module;

wherein the control module is configured to:

read at least three frequencies selected from a preset range containing an initial frequency from the frequency storage cell, including the initial frequency, a frequency less than the initial frequency, and a frequency greater than the initial frequency,

control the drive module to input drive voltages at corresponding frequencies into transformer and control the transformer to respectively run a same preset time;

receive output voltages of the transformer under the drive voltages at the corresponding frequencies;

determine an adjusted transformer drive voltage frequency based on a drive voltage frequency corresponding to a minimum output voltage of the transformer; and

control the drive module to input into the transformer a drive voltage corresponding to the adjusted transformer drive voltage frequency.

10. The system of claim 9 , further comprising: a voltage measuring unit coupled to an output terminal of the transformer and configured to measure the output voltages of the transformer.

11. The system of claim 10 , wherein the control module comprises:

a read sub-module and a control sub-module,

wherein the read sub-module is configured to read the at least three frequencies and send read frequencies to the control sub-module;

wherein the control sub-module is configured to receive the read frequencies from the read sub-module, control the drive module to input the drive voltages for the frequencies into the transformer and control the transformer to respectively run the same preset time;

notify the voltage measuring unit to measure the output voltages of the transformer in a same preset time interval;

receive the output voltages measured by the voltage measuring unit;

determine an adjusted transformer drive voltage frequency based on a drive voltage frequency corresponding to a minimum output voltage of the transformer; and

control the drive module to input into the transformer a drive voltage corresponding to the adjusted transformer drive voltage frequency.

12. The system of claim 9 , wherein the transformer frequency adjusting system further comprises a MOS transistor, wherein a gate electrode of the MOS transistor is coupled to the drive module, a source electrode of the MOS transistor is grounded, and a drain electrode of the MOS transistor is coupled to an input terminal of the transformer.

13. The system of claim 12 , wherein the transformer is a high-frequency transformer.

14. A method for adjusting an operating frequency applied in a transformer of the high-voltage ionic purification system of claim 9 , wherein

the method comprising:

(A) selecting at least three frequencies, including an initial frequency, a frequency less than the initial frequency, and a frequency greater than the initial frequency;

(B) inputting selected frequencies into input terminal of the transformer and respectively running for same preset time, receiving output voltages of the transformer under drive voltages at corresponding frequencies;

(C) determining an adjusted transformer drive voltage frequency based on a drive voltage frequency corresponding to a minimum output voltage of the transformer according to the received output voltages in step (B): and

(D) inputting into the transformer a drive voltage corresponding to the adjusted transformer drive voltage frequency as determined in step (C).

15. The method of claim 14 , further comprising: after step (D), replacing the initial frequency of the transformer with the adjusted transformer drive voltage frequency in step (C).

16. The method of claim 14 , further comprising:

after steps (C) and (D), storing the adjusted transformer drive voltage frequency in step (C); and

prior to step (A), determining whether the adjusted frequency is stored; if not, executing step (A); if yes, inputting the drive voltage of the stored adjusted frequency into the input terminal of the transformer.

17. The method of claim 14 , wherein said selecting in said step (A) comprises uniformly selecting.

18. The method of claim 14 , wherein the drive voltages in steps (B) and (D) are rectangular wave drive voltages.

19. The method of claim 14 , wherein the initial frequency is an intrinsic frequency of the transformer.