An air curtain creates a powerful airflow driven by a motor through a cross-flow or centrifugal fan wheel, forming 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 escape of cold or warm air, it not only conserves electricity but also effectively minimizes energy loss. It separates indoor and outdoor areas into distinct temperature zones, assisting in temperature regulation during prolonged operation of air conditioning systems, thereby achieving energy savings, improving environmental conditions, and providing dust and insect protection.

Thermal Insulation Function
Air curtains are primarily used in places like restaurants where customers frequently enter and exit, requiring constant door openings. They can maintain indoor cold or warm air temperatures with 60-80% efficiency, allowing only minimal temperature fluctuations.

Insect Prevention Function
Most annoying and harmful insects are unable to 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 curtains also include electric heating models, typically using PTC heating, as well as hot water air curtains. Both types can raise the temperature at entrances and exits, with temperature increases ranging from 30 to 60 degrees Celsius, commonly used in northern regions.

Dust Prevention Function
Installing air curtains in the lobbies of machinery factories, food stores, or clothing shops facing bus lanes can effectively block outside dust, maintaining cleanliness at a 60-80% level.

Applications
Air curtains are installed above the entrances of refrigerated rooms, air-conditioned spaces, dust-proof and insulated theaters, hotels, restaurants, conference halls, cold storage facilities, and homes. When activated, they separate indoor and outdoor air and dust, providing convenience for entry and exit while preventing the exchange of cold and hot air between indoors and outdoors.

Additionally, they offer protection against odors, pollution, and mosquitoes. Currently, air curtains are widely used in industries such as electronics, instrumentation, food processing, footwear manufacturing, services, and commerce, creating a favorable business environment for many establishments.