An air 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, maintaining the effects of indoor air conditioning and purifying indoor air, saving energy while promoting air circulation. It effectively isolates dust, smoke, odors, insects, and microorganisms. By preventing the outflow of cold (or warm) air, it not only saves electricity but also effectively prevents the leakage of cold (or warm) air. It divides indoor and outdoor areas into two independent temperature zones, assisting in temperature regulation during prolonged operation of air conditioning systems, achieving the goals of energy conservation, environmental improvement, dust prevention, and insect repellence.
Thermal Insulation Function
Air curtain machines are primarily used in places like restaurants and shops where customers frequently enter and exit, requiring constant door opening and closing. This can maintain indoor cold or warm air temperatures with 60-80% efficiency, allowing only minimal temperature changes.

Insect Repellent Function
It can be observed that most annoying and harmful insects cannot pass through the air curtain barrier. This makes it easier to maintain hygiene in places such as fruit counters and fast-food restaurants.

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

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