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Fan

A technology for fans and fan racks, which is applied to components of pumping devices for elastic fluids, non-variable-capacity pumps, machines/engines, etc., can solve the problem of increased cost of fans, friction between dust-proof devices and rotors, and affecting the normal operation of rotors. Rotation and other problems can be avoided to avoid manufacturing errors, the dustproof effect is remarkable, and the dustproof cost is low.

Inactive Publication Date: 2015-07-22
HONG FU JIN PRECISION IND WUHAN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding dust protection will increase the cost of the fan
In addition, due to the fact that the dust-proof device is manufactured and assembled, there may be errors
This error will cause friction between the dustproof device and the rotor, affecting the normal rotation of the rotor

Method used

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Embodiment Construction

[0011] Please refer to figure 1 , in a preferred embodiment of the present invention, the fan 10 includes a fan frame 20 and a stator 40 and a rotor 60 installed in the fan frame 20 .

[0012] The fan frame 20 includes an outer frame 21 at the periphery and a bracket 23 at the center of the bottom.

[0013] The stator 40 is mounted on the bracket 23 of the fan frame 20 . The stator 40 includes a circuit board 41 , a coil 43 and a fixing clip 45 . A control circuit is provided on the circuit board 41 for controlling the rotation speed of the fan 10 .

[0014] The rotor 60 includes a rotor casing 63 , fan blades 65 and magnets 67 . The rotor housing 63 is integrally formed, including a circular top plate 631, a rotating shaft 635 extending vertically downward from the center of the top plate 631, and a tapered sleeve with gradually increasing openings extending downwards from the periphery of the top plate 631 around the rotating shaft 635. Cartridge 633. The included angle...

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PUM

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Abstract

The invention discloses a fan. The fan comprises a fan frame, a stator and a rotor, wherein the fan frame comprises an outer frame and a bracket; the stator is mounted above the bracket; the rotor comprises a rotor shell covering the stator from the upper side; the rotor shell comprises a top plate, a rotating shaft vertically downwards extending from the center of the top plate, and a conical sleeve aslant downwards extending from the top plate by surrounding the rotating shaft and having a gradually increased opening; an assembly gap for encircling the bracket is formed between the lower part of the sleeve and the bracket; and the rotating shaft is rotationally connected with the stator and the bracket. When the fan works, an air flow is guided by the sleeve to avoid from the bracket to prevent from entering the internal of the rotor through the bounce of the bracket, so that a most important path of dust entering the internal of the rotor is cut off, and the dustproof effect is prominent.

Description

technical field [0001] The invention relates to a fan. Background technique [0002] When the fan is working, dust can easily enter the rotor from the assembly gap between the fan frame and the rotor, which will affect the rotor and stator. If it is light, it will cause the fan to generate noise, and if it is severe, it may cause the fan to stop. At the same time, the entry of dust also greatly reduces the service life of the fan. [0003] In order to reduce dust damage, a class of dust-proof devices such as dust-proof rings have appeared in the industry. The dustproof device is installed between the fan frame and the rotor of the fan, and is used to prevent dust from entering the interior of the rotor through the assembly gap between the fan frame and the rotor. However, adding dust protection will increase the cost of the fan. In addition, due to the fact that the dustproof device is manufactured and assembled, errors are likely to exist. This error will cause friction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/70F04D29/52
CPCF04D29/703F04D29/522
Inventor 宋拥军
Owner HONG FU JIN PRECISION IND WUHAN CO LTD