Test device and test method for verifying dust deposition resistance of fan

The invention provides a test device and a test method for verifying dust deposition resistance of a fan, and relates to the field of rail transit cooling fans. The test device comprises a test box body, a fan working cabin arranged in an inner cavity of the test box body, and a tested fan arranged in the fan working cabin; the temperature control module and the humidity control module are used for adjusting the fan working cabin to the target test temperature and the target test humidity according to the humidity control signal; the image acquisition module is used for acquiring an ash deposition state image on the working surface of the tested fan; the data processing module is arranged outside the test box body, is electrically connected with the automatic dust conveying box, the dust particle counting module, the temperature control module, the humidity control module and the image acquisition module, and is used for adjusting the dust conveying speed of the automatic dust conveying box according to the c