Electric Fans

Electric fans are versatile not only in their shapes, sizes and structures but also in the purposes that they serve. In the household environment, fans are used for two main purposes – for providing breeze that produces a cooling effect and for exhaust reasons such as for removing fumes from the kitchen. This multiply usable device actually has a very simple principle that drives it.

When we speak of fans, we speak of the entire device that includes the gearbox, the rotating blades, the axle, the guards and the like. It must be noted that not all fans have the same design and hence not all of them will have the same components too. But the gearbox, blades and axle are ubiquitous in all electric fans.

The gearbox is the central arrangement that allows different speeds of rotation to the fan. The amount of cooling (or exhaust) that a fan can provide will directly depend on the speed at which the fan is set, according to which the blades rotate. Today, fans use potentiometers to control their speeds which have made it much more convenient to set fans at whatever speed is desired rather than in earlier times where speeds could be set only in terms of discrete numbers.

The basic working component of the fan is the motor built within which rotates the blades. The blades are of particular attention. These blades are always designed specially, so that they tilt toward the area that needs the breeze and are also curved to enhance the effect. When the motor is in action, the blades begin moving. Due to their characteristic shape, they can produce a higher pressure in front of them and a lower pressure behind. This difference of pressure needs to be compensated. Thus, the air from the back of the blades begins moving to the front area. This is what brings the breeze to the person or persons who are in front of the fan. The speed of the fan can be increased, which alters the speed of the rotating blades that can influence the amount of air current that the fan can create.

Exhaust fans have the same physical principle as the fans that are used for creating the cooling effect. However, there is one basic difference in the alignment. With exhaust fans, the placement is such that the blades are tilted and curved in the opposite direction. This is so that the exhaust fans can remove the fumes from the space where they are installed in and direct them outside.

There are various kinds of electric fans depending on where they are placed. The ceiling fans are found in most homes. These are characterized by their large blades so that they can provide as much breeze as possible. They are elaborately designed because they have to fit in as part of the home décor. They may also have lights with separate controlling features of their own.

The table fans are extremely popular too. These can be placed almost anywhere; they do not need an installation like the ceiling fans do. Table fans are portable. They can be short (to be placed on tables) or long (to be placed on the floor). The length here refers to the length of the supporting rod that holds the fan. These fans are equipped with front and back guards too. These are needed to prevent contact of body parts with the rotating blades. The guards are elaborately designed so as to appeal to the person who is looking for a valuable addition to the home décor.

There is also a big demand for wall mounted fans where the entire appliance can be fit on a wall and can be inclined to the place where the user would be present. These fans find a prominent place for office purposes, such as in cubicles and cabins where the users are present in one place. However, wall mounted fans can be aligned in particular directions even after the installation. Most of them have a swiveling feature of their own, which allows them to keep turning in preset directions, thus increasing the area where they provide the breeze.

This Electric Fans Review is Written/Updated on Jul 14th, 2011 and filed under Home Appliances. Both comments and pings are currently closed.

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