Detailed electric fan 3D model. Product was created with polygons, without using textures.
Fan - a device for moving gas with a compression ratio of less than 1.15 (or a pressure difference between the outlet and the inlet is not more than 15 kPa, a compressor is used for a larger pressure difference).
The electric fan 3D model based on a real one. The main application of it: systems of forced supply and exhaust and local ventilation of buildings and premises, blowing of heating and cooling elements in heating and air conditioning devices, as well as blowing in cooling radiators of various devices.
Fans are usually used to move air - for ventilation of premises, equipment cooling, air supply of the combustion process (blowers and smoke exhausters). Powerful axial fans can be used as propellers, since the air thrown out, according to Newton's third law, creates a counter force acting on the rotor.
In general, a fan is a rotor on which blades are fixed in a certain way, which, when the rotor rotates, collides with air and throws it off. From the position and shape of the blades depends on the direction in which air is thrown. There are several main types of fan design used to move air:
Separate techniques of organized ventilation of enclosed spaces were used in antiquity. Ventilation of premises until the beginning of the XIX century was reduced, as a rule, to natural ventilation. The theory of natural air movement in channels and pipes was created by M. V. Lomonosov. In 1795, V. X. Fribe set forth for the first time the basic provisions that determine the intensity of air exchange in a heated room through the leaks of external fences, doorways and windows, thus initiating the theory of the neutral zone.
At the beginning of the 19th century, ventilation with thermal induction of intake air and air removed from the room was developed. Domestic scientists have noted the imperfections of this kind of motivation and the associated high costs of heat. Academician E. X. Land pointed out that complete ventilation can only be achieved mechanically.
With the advent of centrifugal fans, the technology of ventilation of rooms is rapidly improving. The first successfully operated centrifugal fan was proposed in 1832 by A. A. Sablukov. In 1835, this fan was used to ventilate the Chagir mine in Altai. Sablukov offered it for ventilation of premises, holds of ships, to accelerate drying, evaporation, and so on. Widespread ventilation with mechanical induction of air movement began from the end of the XIX century.
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