Patent ID: 9618221
Date: 2017-04-11
CPC Classifications: F24F

Claim:
1. A ventilation apparatus, comprising: a channel unit comprising a first channel with a first opening; a wind turbine with a second opening at bottom, rotatably disposed on the channel unit and comprising an airflow space communicating with the first channel, the second opening being lower than the first opening wherein a second channel is formed between an inside of the wind turbine and an outside of the channel unit; and a first exhaust fan connected to the wind turbine and disposed in the second channel, wherein, the first channel, the airflow space, and the second channel communicate with each other, and when the wind turbine rotates to bring the first exhaust fan to rotate, the first exhaust fan brings air to the second channel through the first channel and the airflow space; wherein the first exhaust fan comprises: