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Inner rotor type radiator fan

A heat dissipation fan and rotor type technology, applied in the direction of non-variable pumps, electromechanical devices, electrical components, etc., can solve the problem that the motor shell 912 cannot provide magnetic sealing effect, reduce the heat dissipation effect of the heat dissipation fan 90, and affect the operation efficiency of the impeller 93, etc. problem, to achieve the effect of improving the overall heat dissipation effect, improving the heat dissipation effect, and avoiding magnetic flux leakage

Active Publication Date: 2010-05-26
SUNONWEALTH ELECTRIC MACHINE IND
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the motor casing 912 of the fan frame 91 is made of plastic material by injection molding, when the circuit board 94 controls the process of magnetic linkage between the stator 923 and the magnetic element 922, The motor housing 912 itself cannot provide a magnetic effect, so it is easy to generate magnetic flux leakage. On the other hand, it will also cause electromagnetic interference, which will affect the operational performance of the impeller 93, thereby reducing the performance of the existing cooling fan 90. heat radiation

Method used

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  • Inner rotor type radiator fan
  • Inner rotor type radiator fan
  • Inner rotor type radiator fan

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Embodiment Construction

[0045] In order to allow the above-mentioned and other objects, features and advantages of the present invention to be more clearly understood, the preferred embodiments of the present invention will be specifically cited below, together with the accompanying drawings, and described in detail as follows:

[0046] Please refer to Figure 4 and Figure 5 As shown, the inner rotor cooling fan according to the first embodiment of the present invention mainly includes a fan frame 1 , a magnetic shell 2 , an inner rotor motor 3 , an impeller 4 and a circuit board 5 . The fan frame 1 can be produced by means of injection molding; the magnetic sealing case 2 is combined inside the fan frame 1; the inner rotor motor 3 is arranged inside the magnetic sealing case 2; the impeller 4 is connected to the inner rotor motor 3; The circuit board 5 is electrically connected to the inner rotor motor 3 . Thereby, the circuit board 5 can be used to control the inner rotor motor 3 to drive the im...

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Abstract

The invention relates to an inner rotor type radiator fan which comprises a fan fame, a magnet sealing shell, an inner rotor motor, an impeller and a circuit board, wherein the fan frame is provided with a frame body and a fixing seat; the magnet sealing shell is a hollow shell made of a permeability magnetic material; a combination part is formed at one end of the magnet sealing shell, and the combination part is combined on the fixing seat of the fan frame; the inner rotor motor is arranged in the magnet sealing shell; the impeller is combined with the inner rotor motor and arranged outside the magnet sealing shell; and the circuit board is electrically connected with a stator. Thus the inner rotor motor can stabilize the rotating actions of a rotor and the impeller and match with the fan frame to effectively guide and centralize air flows generated by the impeller, and the magnet sealing shell can provide a magnet sealing effect for avoiding generating a magnetic leakage phenomenon so as to promote the integral radiating effect.

Description

technical field [0001] The invention relates to a heat dissipation fan, in particular to an inner rotor type heat dissipation fan driven by an inner rotor motor. Background technique [0002] Please refer to figure 1 As shown, it is a conventional cooling fan 70 driven by an external rotor motor. The cooling fan 70 roughly includes a fan frame 71 , a stator 72 , a circuit board 73 and a rotor 74 . The inner side of the fan frame 71 is provided with a shaft tube 711, and at least one bearing 712 is arranged in the shaft tube 711; the stator 72 and the circuit board 73 are sleeved on the outer peripheral surface of the shaft tube 711, and the circuit board 73 is electrically connected The stator 72; the rotor 74 has a rotating shaft 741 and an impeller 742, one end of the rotating shaft 741 penetrates into the shaft tube 711 to pivotally connect the bearing 712, the impeller 742 is combined with the other end of the rotating shaft 741, and the The impeller 742 is provided wi...

Claims

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Application Information

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IPC IPC(8): F04D25/06F04D25/08F04D29/52H02K5/04H02K11/02
Inventor 洪银树尹佐国
Owner SUNONWEALTH ELECTRIC MACHINE IND
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