Dust removal system and method, air conditioner outdoor unit and air conditioner

The embodiment of the invention provides a dust removal system and method, an air conditioner outdoor unit and an air conditioner, and relates to the technical field of air conditioners, the dust removal system comprises a condenser, a draught fan and a wind shielding device, the draught fan can blow air towards the condenser, the wind shielding device is arranged between the condenser and the draught fan, and the wind shielding device is used for shielding one part of the condenser; and the air blown out by the fan flows through the other part of the condenser. The air conditioner outdoor unit comprises the dust removal system. The air conditioner comprises the air conditioner outdoor unit. According to the dust removal system and method, the air conditioner outdoor unit and the air conditioner, dust particles on the condenser can be cleaned more thoroughly, and the cleaning effect on the condenser is effectively improved. 本发明实施例提供了一种除尘系统、方法、空调外机及空调器，涉及空调技术领域，该除尘系统包括冷凝器、风机以及挡风装置，风机可以朝向冷凝器吹风，挡风装置设置在冷凝器和风机之间，挡