Passive automatic air quantity control air distribution method and its air distribution device

The invention discloses an air quantity control distribution method and the device that could use the action of expand with heat and contract with cold to push the air guiding board and automatically regulate the air quantity. It includes fixation base, active air guiding board, driving board, and temperature controller that can extend according to the variation of the temperature. The active air guiding board connects to the driving board by driving structure. One end of the temperature controller is fixed on fixation base, and the other is connects with the driving board. When the indoor temperature varies, the temperature controller would extend following the variation of the temperature and push the driving board to move up or down. Driving structure is set between driving board and air guiding board, the air guiding board could freely rotate around the fixation base. Thus, it could realize accurate adjusting of the air quantity of the air conditioner without energy consumption and maintaining.