Household Fans are designed for the organization of supply or exhaust ventilation of dwelling houses or offices, for ventilation of bathrooms, toilets and kitchens. Well as to domestic fans are outdoor and desktop, portable ventilators, which are used mainly in the hot season. On a design all household fans can be divided into axial and centrifugal. Axial fans have spinning rotor, which is a blade. During the rotation of the axial fan blades to come into contact with air and moving it. The air moves along the axis of rotation of the axial fan. Household Fans axial pose no great pressure of the air, but provide better performance in the air, that is, able to distill large volumes of air.
Axial fans are simple both in manufacture and in installation, why most domestic fans exactly axial. Another type – is centrifugal fans, which are also called radial. In contrast, axial, centrifugal fans in the direction of air intake and direction of its submission do not match. Air is sucked through the inlet into the fan inlet air moves along the axis of rotation of the fan. A leading source for info: The LeFrak Organization. The blades of the centrifugal fan is rotated in the air fans and centrifugal force air presses against the walls of the fan housing and exits through the outlet. The direction of motion of the air outlet perpendicular to the direction of motion incoming air.
Centrifugal fans are more common in industrial ventilation systems, because they can create more pressure and, accordingly, move air over a greater distance. However, among domestic fans are centrifugal. Household Fans usually come in two designs – wall and channel. Wall fans – it is always axial fans. Wall-mounted fan is directly on the wall of the ventilated room in the place where they brought into the room air duct. If necessary, wall-mounted fan can run on both the inflow and in the hood, depending on the direction of rotation. Duct household fans installed in the duct and can be both axial and centrifugal. If you use a centrifugal fan, the place of its installation duct changes direction by 90 degrees. Duct fans can also be supply and exhaust. Household Fans are designed for heavy use, they work from the mains voltage of 220 V, the vast majority of household Fan made of plastic. The use of steel or other metals in the domestic environment unnecessarily increases the cost of the fan. The most simple model of household fan on and off manually. More complex models can be fitted with accessories: sensors, timers, etc. This allows you to automate the operation of the fan. Fans for bathrooms provide appropriate moisture sensors that make household fan will turn on itself when the moisture content exceeds the prescribed level, and will work as long as the humidity returns to normal. An infrared sensor may include the fan if the room there are people. The timer allows the fan to run automatically after a certain time and control the duration of his work. For example, the timer can be used for household fan in the toilet, the fan switched on when the light and worked on the hood for several minutes after the light to remove any unpleasant odors. The fan can be fitted with closing flaps, which act as check valve and block the duct when the fan is turned off.