A wind curtain machine uses a motor to drive a cross-flow or centrifugal fan wheel, generating a powerful airflow to create an "invisible door curtain." It divides indoor and outdoor areas into two independent temperature zones, creating a comfortable indoor environment while maintaining indoor air conditioning and purifying indoor air. It saves energy, promotes air circulation, and effectively isolates dust, smoke, odors, insects, and microorganisms. By preventing the outflow of cold (or warm) air, it not only conserves electricity but also efficiently minimizes air leakage. It assists in circulating and regulating temperature during prolonged operation of air conditioning systems, achieving energy savings, improving environmental conditions, and providing dust and insect prevention effects.
Thermal Insulation Function
Wind curtain machines are primarily used in places like restaurants and shops where customers frequently enter and exit, requiring constant door opening and closing. They can maintain indoor cold or warm air temperatures with 60-80% efficiency, allowing only minimal temperature variations.

Insect Prevention Function
It can be observed that most annoying and harmful insects are unable to pass through the wind curtain barrier. This makes it easier to maintain hygiene in areas such as fruit counters and fast-food restaurants.

Heating Function
Wind curtain machines also include electric heating models, typically using PTC heating elements, as well as hot water models. Both types can raise the temperature at entrances and exits, with increases ranging from 30 to 60 degrees Celsius, and are commonly used in northern regions.

Dust Prevention Function
If installed in the lobbies of machinery factories or food and clothing stores facing bus lanes, wind curtain machines can effectively block external dust, maintaining cleanliness at a 60-80% level.