Precautions In Addition To The Use Of The Ion Fan Unit
According to the high-voltage form used by the discharge electrode (discharge needle), the static elimination device can be divided into two major categories: AC and DC. In the AC, it is divided into high frequency type and common AC type (commercial frequency), and DC is divided into continuous DC type. , DC pulse type.
The difference between the AC and DC power removal devices is that positive and negative air ions are alternately generated on one discharge needle of the AC type discharge device, and the discharge electrode is composed of the discharge needle and the ground electrode, and the discharge electrode of the DC type discharge device is not A grounding electrode is required, and the discharging electrode is composed of positive and negative independent discharge needles. In the absence of external air supply (such as fans, compressed gas, etc.), the DC-type static eliminator is farther away from the AC-type static eliminator. In the case of outside air supply, the static elimination distance depends mainly on the static eliminator. Structure, air volume and the strength of the high voltage power supply.
The difference between the AC and DC power removal devices is particularly concerned with the difference in ion balance. The AC type discharge device generates both positive ions and negative ions on the same discharge needle, so even after the discharge needle is worn for a long time, the ion balance There will be no major changes, and the ion balance performance is better. DC type discharger Because the discharge needle consists of independent positive and negative electrodes, the ion balance is poor when used at close distances. In addition, the discharge needle is affected by the environment and the degree of contamination of the needle during use, which will affect the balance of ions, especially discharge. After the needle is used for a long period of time, the positive and negative discharge needles are worn to a different extent, and the ion balance cannot be corrected even after washing.
Since the discharge needle will be polluted after long-term use, it directly affects the static elimination performance and ion balance. Therefore, the static elimination electrode part should be cleaned regularly during use. In particular, the DC discharger discharge needle is more susceptible to contamination than the AC type. Electrical cleaning should be more frequent, and the degree of wear of the positive and negative discharge needles is different. Regular ion balance detection is required. When the discharge needle is seriously worn, the discharge needle should be replaced in time.