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Passive fan

A passive fan technology, applied in the direction of non-variable pumps, machines/engines, liquid fuel engines, etc., can solve the problems of reduced heat dissipation efficiency of fan 1, limitation of fan 1 design and heat dissipation performance, and reduction of heat dissipation efficiency of fan 1, etc. To achieve the effect of improving cooling performance

Inactive Publication Date: 2015-01-28
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in this fan 1, because the motor 12 is located at the center of the impeller 11 and has a certain size, so considering the storage space of the motor 12 and the overall volume of the fan 1, the blade area of ​​the impeller 11 must be sacrificed to reduce the fan 1. Cooling performance
In addition, since the motor 12 itself also generates heat, the heat dissipation performance of the fan 1 will be further reduced.
From the foregoing, it can be seen that the design and heat dissipation performance of the fan 1 have great limitations.

Method used

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Embodiment Construction

[0042] A passive fan according to a preferred embodiment of the present invention will be described below with reference to related drawings, wherein the same components will be described with the same reference symbols.

[0043] Please refer to Figure 2A and Figure 2C As shown, the passive fan 3 of the preferred embodiment of the present invention includes a fan frame 31 , at least one passive impeller 32 and at least one active rotor 33 . The passive fan 3 can be an axial fan or a centrifugal fan.

[0044] The fan frame 31 has a frame body 311 , at least one rib 312 and a shaft tube portion 313 , and the rib 312 connects the shaft tube portion 313 and the frame body 311 . The number of ribs 312 depends on actual needs, and may be one, or two or more.

[0045] The passive impeller 32 is disposed in the frame body 311 and sleeved on the shaft tube portion 313 . And the passive impeller 32 has a plurality of fan blades 321 , a hub 322 , a rotating shaft 324 and at least o...

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Abstract

The invention discloses a passive fan. The passive fan comprises a fan frame, at least one impeller and at least one active rotor, wherein the impeller is arranged in the fan frame; the active rotor is arranged on the fan frame and drives the rotation of the impeller; the impeller and the active rotor are configured independently.

Description

[0001] This application is a divisional application of an invention application with an application date of July 6, 2007, an application number of 200710128335.1, and an invention title of "passive fan". technical field [0002] The invention relates to a fan, in particular to a passive fan. Background technique [0003] With the rapid development of electronic products towards high performance, high frequency, high speed and light weight, the heating temperature of electronic products is getting higher and higher, which is prone to instability and affects product reliability and service life. Therefore, heat dissipation has become one of the important issues of electronic products, and using a fan as a heat dissipation device is a common structural arrangement. [0004] Please refer to figure 1 As shown, the conventional fan 1 includes an impeller 11 , a motor 12 and a fan frame 13 , and the impeller 11 has a plurality of fan blades 111 . Wherein, the motor 12 is arranged...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D25/08F04D29/64
CPCF04D25/08
Inventor 萧立辉雷宗玙黄彦钧
Owner DELTA ELECTRONICS INC