Safe double-end electric fan with small noises and large air volume

Abstract

The invention discloses a safe double-end electric fan with small noises and large air volume. The safe double-end electric fan with small noises and large air volume comprises an induced draft assembly and two air outlet surface shields; each air outlet surface shield comprises a panel and a back plate; an air outlet slot is formed in each panel; a mounting hole is formed in the center of each back plate; an air guide channel is formed between each panel and the corresponding back plate; the induced draft assembly comprises a shell, an induced draft fan, a first air duct and a second air duct; the induced draft fan is arranged in the shell; the first air duct and the second air duct are formed in the shell; a mesh plate used as an air inlet hole is arranged in the middle of the shell; a first air duct outlet is formed in the left end of the shell; a second air duct outlet is formed in the right end of the shell; and the induced draft fan comprises a double-end motor and two induced draft fan wheels. When the double-end motor rotates, air enters from the air inlet hole in the middle of the shell, and enters the first air duct and the second air duct after passing through the corresponding induced draft fan wheels; and two ends of the shell are arranged in the mounting holes of the corresponding back plates, the first air duct outlet communicates with the air guide channel of the air outlet surface shield on the left side of the electric fan, and the second air duct outlet communicates with the air guide channel on the right side of the electric fan. The safe double-end electric fan is small in noises and large in air volume.

Description

[0001] This application is a divisional application of an invention patent application with an application date of "August 29, 2013", an application number of "2013103815565", and a title of "A Safety Double-headed Electric Fan". technical field [0002] The invention belongs to the technical field of electric fan structure design, and in particular relates to a safe double-head electric fan with low noise and large air output. Background technique [0003] The current commercially available bladeless safety fan includes a base and an annular air outlet mask arranged on the base, and the base is provided with a suction assembly mainly consisting of a turbo fan; the biggest advantage of this fan is that it eliminates the traditional electric The fan blades used by the fan are extremely safe for both adults and children. However, this kind of fan also has the following disadvantages: in order to avoid bulkiness and bloat, the base with a smaller diameter is used, so the size o...

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Problems solved by technology

However, this kind of fan also has the following disadvantages: in order to avoid bulkiness, a smaller diameter base is used, so the size of the turbo fan is limited. In order to ensure sufficient air output, the speed of the turbo fan is higher, generally reaching every Hundreds to thousands of revolutions per second, resulting in a lot of noise, which is difficult to eradicate; in addition, because the diameter of the turbo fan is too small, although its speed is high, the air output is still not comparable to that of traditional fans, and the blowing effect is not good.

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