The air curtain refers to the "curtain" air wall formed by the air supply, which can block the invasion of hot and cold air outdoors and spill the indoor air overflow, improve the indoor temperature in winter and summer, reduce the flow of hot and cold air, and reduce indoor temperature fluctuations.The air curtain is usually divided into three types: upper, side -by -side, and down delivery types.
1. Pentry air curtain: installed on the upper part of the door, does not occupy the building area, does not affect the aesthetics of the building, and the sanitary conditions for sending the atmosphere are better. It is suitable for general public buildings.Although the efficiency of the air -to -air winds from the outdoor cold wind is not as good as the below, it is still a form of promising development.
2. Side -off air curtain: installed on the side of the door hole, divided into one -sided and bilateral.It is suitable for industrial buildings. When the width of the outer door is less than 3m, one -sided air supply should be adopted. When the width of the outer door is 3 ~ 18m, a unilateral or bilateral air supply should be adopted, or the air supply from top to bottom.In order not to block the airflow, the door with side -type air screens is strictly prohibited to open inward.
3. Free air curtain: installed under the ground.Because the strongest shot area of ??the offer air screen is in the lower part of the door hole, the windshield is better against the invasion of the cold wind from the lower part of the door hole in winter, and it is not affected by the direction of the door.At present, the offer air curtain is rarely used.
In addition, according to the processing status of the airflow, the air curtain can also be divided into non -heating air screens and hot air.Non -heating air screen can be installed horizontally or vertically.For high -demand buildings, in order to better organize airflow, set out air outlets above the gate, set the air outlet on the ground, and the air is used after filtering and heating.The hot air curtain can be divided into three types: flow, centrifugal, and axis.Among them, the flow of the flow type is good, and the width of the air screen is large and uniform; the centrifugal air output pressure and the range of the axial flow; the axial flow is large, the range is long, and the flow is small.
In general, different types of air curtains have their unique characteristics and applicable scenarios, and need to be selected according to specific needs.
The above is the difference and characteristics of different types of air curtain