In medical facilities, bacteria, viruses, and harmful substances in the air may pose a threat to the health of patients, so maintaining the cleanliness and purity of the air is crucial. The fan can remove pollutants such as bacteria, viruses, and harmful gases from the air by inhaling and treating it, and then release the purified air.

Specifically, the application of fans in medical purification includes the following aspects:
1. Air disinfection: The fan can inhale air and disinfect it through methods such as ultraviolet radiation and ozone to kill bacteria and viruses in the air.
2. Harmful gas treatment: Fans can remove harmful gases such as formaldehyde, benzene, as well as particles and other pollutants from the air, ensuring air quality and cleanliness.
3. Humidity and temperature control: In medical facilities, operating rooms, intensive care units, and other rooms require strict humidity and temperature control. The fan can effectively reduce the temperature and humidity in the room by adjusting the air flow speed and direction, providing a comfortable and safe working environment.
4. Air circulation: Fans can promote air circulation in medical facilities, provide good air circulation and ventilation effects, and ensure that patients and medical staff can breathe fresh air.

In summary, fans have a wide range of applications in medical purification, ensuring air quality and environmental cleanliness in medical facilities, and providing safe and comfortable working and treatment environments for patients and medical staff.