The basic structure of an electrostatic machine is composed of two electrode plates with the same polarity, one of which is a high-voltage discharge electrode and the other is a low-voltage dust collection electrode. When the voltage rises, a large number of electrons from the discharge electrode continuously escape from around the discharge electrode, which is called corona discharge. The escaped electrons collide with the gas molecules passing through between the electrodes, causing them to be ionized. The gas molecules form positive and negative ions, which are generated due to corona discharge. A large number of negative ions move from the discharge electrode to the dust collecting electrode, causing the suspended particles suspended in the air to attach and be charged. The charged suspended particles move toward the dust collecting plate under the force of the electric field Coulomb force, and the particles that reach the dust collecting electrode are lost. Electric charge adheres to and accumulates on the dust collection pole. In this way, the oil smoke particles in the air are captured and purified. The basic structure of an electrostatic machine is composed of two electrode plates with the same polarity, one of which is a high-voltage discharge electrode and the other is a low-voltage dust collection electrode. When the voltage rises, a large number of electrons from the discharge electrode continuously escape from around the discharge electrode, which is called corona discharge. The escaped electrons collide with the gas molecules passing through between the electrodes, causing them to be ionized. The gas molecules form positive and negative ions, which are generated due to corona discharge. A large number of negative ions move from the discharge electrode to the dust collecting electrode, causing the suspended particles suspended in the air to attach and be charged. The charged suspended particles move toward the dust collecting plate under the force of the electric field Coulomb force, and the particles that reach the dust collecting electrode are lost. Electric charge adheres to and accumulates on the dust collection pole. In this way, the oil smoke particles in the air are captured and purified.