Hidden turbulent flow device and vehicle air conditioning system

The invention discloses a hidden turbulent flow device and a vehicle air conditioning system. The hidden turbulent flow device comprises an installing frame, and two sides, parallel to the airflow direction, of the installing frame are both provided with sliding grooves; a supporting plate, and one side of the supporting plate is rotatably connected with the leeward side of the installing frame; aspoiler, one side of the spoiler is rotatably connected with one side, close to the upwind side of the installing frame, of the supporting plate, and one side, close to the upwind side of the installing frame, of the spoiler is wavily connected with the sliding grooves through a pulley; a driving mechanism is connected with the pulley in a driving mode; and a controller is connected with the driving mechanism used for controlling the driving mechanism to operate or stop based on the airflow velocity. When the air flow is small or no air flow, the spoiler and the supporting plate are basicallykeep a flat state; and wh