关键词: 空调外机, 防水测试标准, GB/T 4208 IPX4, 喷头测试

Abstract: Waterproof testing is one of the important reliability verification tests for air conditioner outdoor units. To study the applicability of the current testing standards for air conditioner outdoor units, the principles of the GB/T 4208 IPX4 testing method and the testing parameters such as water flow rate/rainfall intensity, test duration, and wind speed were theoretically analyzed and calculated. By comparing and referencing other product rain test standards and relevant meteorological data, it was concluded that the GB/T 4208 IPX4 spray nozzle testing method is applicable to air conditioner outdoor units, but the test duration needs to be adjusted to 5 minutes per side. Additionally, it is recommended to add a separate wind source to more realistically simulate the actual usage environment. Suggestions are also provided for the selection between the oscillating tube and spray nozzle testing methods, the testing distance for the spray nozzle test method, the operating state of the prototype during testing, and the flow meter settings for the spray nozzle test device, which are not clearly defined in the standards.

Key words: Air conditioner outdoor units, Waterproof test standard, GB/T 4208 IPX4, Spray nozzle test