Roof fans are fans used mainly for ventilation of rooms, production halls, shops, warehouses and the like. The roof fans used by our company have radial impellers. They are characterised by high efficiency, reliable operation. Dynamically well-balanced impellers allow for many years of trouble-free operation. Roof fans have their upper dome made of special laminates. The basic colour is blue. The rotor is painted orange. The remaining metal parts are painted black. Our fans go through a detailed inspection - each one is switched on after assembly to check for vibrations and residual unbalance. The roof fan prepared in this way is only sent to the customer.
| Type (chart) | Airflow (m3/s)/(m3/h) | Pressure (Pa) | Power (kW) | Drawing (PDF) |
|---|---|---|---|---|
| WPD 180/268 | 0.39/1400 | 680 | 1.1 | rysunek WPD 180/268 |
| WPD 219/311 | 0.95/3450 | 970 | 1.10 | rysunek WPD 219/311 |
| WPD 219/358 | 0.95/3450 | 1580 | 2.20 | rysunek WPD 219/358 |
| WPD 256/350 | 0.61/2200 | 290 | 0.55 | rysunek WPD 256/350 |
| WPD 256/350 | 1.1/4000 | 1520 | 2.2 | rysunek WPD 256/350 |
| WPD 256/401 | 1.73/6228 | 1790 | 3.00 | rysunek WPD 256/401 |
| WPD 280/420 | 1.0/3600 | 550 | 0.55 | rysunek WPD 280/420 |
| WPD 280/420 | 2.10/7600 | 2380 | 4.00 | rysunek WPD 280/420 |
| WPD 355/503 | 1.54/5500 | 700 | 1.10 | rysunek WPD 355/503 |
| WPD 355/512 | 2.60/9360 | 700 | 2.20 | rysunek WPD 355/512 |
| WPD 355/580 | 2.00/7200 | 980 | 2.20 | rysunek WPD 355/580 |
| WPD 355/606 | 2.20/7920 | 1220 | 3.00 | rysunek WPD 355/606 |
| WPD 355/675SRD | 2.40/8640 | 1750 | 4.00 | rysunek WPD 355/675SRD |
| WPD 400/584 | 1.50/5400 | 380 | 1.5 | rysunek WPD 400/584 |
| WPD 400/584 | 2.22/8000 | 880 | 2.2 | rysunek WPD 400/584 |
| WPD 400/660 | 2.70/10000 | 1430 | 3.00 | rysunek WPD 400/660 |
| WPD 550/930 | 6.50/22500 | 1530 | 7.50 | rysunek WPD 550/930 |
Roof fans are mounted on roofs. These types of fans are mounted on special roof bases. To ensure proper fan operation, it is necessary to match the size of the fan to the dimension of the roof base on which it is to operate. This is not difficult, as there is a very wide choice of sizes roof fans. It is very important to determine the capacity of the fan as well as its operating pressure. On this basis, the type and size of the fan is determined. The capacity can be determined by knowing the cubic capacity of the room. Depending on whether it is a gymnasium, production hall, shop, restaurant, etc., we determine the number of air changes per hour. These data can be found in specialised scientific literature. The characteristic shape of our fans is a dome, which protects the inside of the unit from precipitation. The use of roof fans is always recommended when gravity ventilation proves too weak to ensure air exchange inside the building. This can happen in the case of low buildings and also in places where strong winds often blow. In the latter case, there may even be a backflow of air into the building. To avoid this, more powerful roof fans are used. Very often, the fans draw in air from halls and other rooms where there are no ventilation ducts.
