Purified wind field generating device and additive manufacturing equipment

The invention provides a purified air field generating device. The purified air field generating device comprises a shaped containing part, an air supply part, an air outlet part and a first adjusting part. The forming containing part comprises a first side wall and a second side wall which are opposite, a forming chamber is arranged between the first side wall and the second side wall and provided with a bottom wall, the first side wall is provided with a first air supply outlet and a second air supply outlet, the second side wall is provided with a first air outlet and a second air outlet, and the second air supply outlet is located in the side, away from the bottom wall, of the first air supply outlet. The air supply part is used for supplementing air to the forming chamber. The air outlet part is used for leading out gas in the forming chamber. The first adjusting part is arranged on the second side wall, and the part, communicating with the forming chamber, of the first air outlet forms a first circulati