Fan enabling increased air volume

a technology of air volume and fan, applied in the direction of machines/engines, stators, liquid fuel engines, etc., can solve the problems of reducing the cooling effect, consuming more power, waste of energy, etc., and achieve the effect of increasing air volume and enhancing cooling power

Inactive Publication Date: 2005-12-15
ASIA VITAL COMPONENTS SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010] In a first embodiment of the present invention, the blades are arranged on the hub with a preceding blade overlapping a following blade. In a second embodiment of the present invention, the blades are arranged on the hub with a blade root installation angle smaller than 53° and a blade tip inclination angle smaller

Problems solved by technology

However, when the airflows produced by the cooling fan inward flow through the system, they are inevitably impeded by the components or parts densely arranged in the system to result in largely reduced cooling effect.
However, the increased motor rotating speed would result in consumption of more power and accordingly waste of more energy.
When the fan is started to operate, airflows produced by the fan are interfered in their flow paths by the components in the system.
That is, the impedance of the internal components of the system will prevent the airflows produced by

Method used

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  • Fan enabling increased air volume
  • Fan enabling increased air volume
  • Fan enabling increased air volume

Examples

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Embodiment Construction

[0028] Please refer to FIGS. 4, 5, and 6, in which a fan enabling increased air volume according to a first preferred embodiment of the present invention is shown. As shown, the fan of the present invention includes at least a housing 21, a fan wheel 22, and a driving unit 23. The fan wheel 22 includes a hub 221 and a plurality of overlapped blades 222 that radially outward extend from an outer periphery of the hub 221. Each of the blades 222 includes a blade root 2221 directly connected with the hub 221, a blade body 2222 extended from the blade root 2221 and having a first blade edge 2223 and a second blade edge 2224, and a blade tip 2225 located at an outer end of the blade body 2222. The blades 222 overlap one another in such a manner that the blade root 2221 and an area including an upper part of the blade body 2222 and the first blade edge 2223 of a preceding blade 222 overlaps the blade root 2221 and an area including a lower part of the blade body 2222 and the second blade e...

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PUM

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Abstract

A fan enabling increased air volume includes at least a fan wheel and a driving unit for driving the fan wheel to maintain a uniform rotating speed. The fan wheel includes a hub and a plurality of blades radially extended from an outer periphery of the hub. The blades may be arranged on the hub in different manners, such as having a preceding blade overlapped a following blade, or having a blade root installation angle smaller than 53° and a blade tip inclination angle smaller than 46°, or having a solidity of blade roots larger than 1.5 and a solidity of blade tips larger than 1, so that the fan wheel produces increased air volume and accordingly enhanced cooling power at the uniform rotating speed.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fan enabling increased air volume, and more particularly to a fan with enhanced cooling power. BACKGROUND OF THE INVENTION [0002] With the increasing developments in technological fields, various kinds of electronic products are designed to provide more functions so as to increase their value in use. The increased functions necessitate the provision of more components or parts in a system having a fixed volume. The large quantity of components or parts in the electronic product result in reduced internal spaces of the system while produce more heat in the limited internal spaces of the system to necessitate the use of cooling means to carry away the produced high amount of heat. A cooling fan is most frequently selected to solve the problem of heat produced in the system because it produces convective airflows to carry away the produced heat from the system. However, when the airflows produced by the cooling fan inward...

Claims

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Application Information

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IPC IPC(8): F01D1/00F04D29/32
CPCF04D29/325
Inventor LIU, WEN-HAO
Owner ASIA VITAL COMPONENTS SHENZHEN CO LTD
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