WO2007085124A1 - Oscillating air flow low-noise composite fan blade - Google Patents

Oscillating air flow low-noise composite fan blade Download PDF

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Publication number
WO2007085124A1
WO2007085124A1 PCT/CN2006/000177 CN2006000177W WO2007085124A1 WO 2007085124 A1 WO2007085124 A1 WO 2007085124A1 CN 2006000177 W CN2006000177 W CN 2006000177W WO 2007085124 A1 WO2007085124 A1 WO 2007085124A1
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WO
WIPO (PCT)
Prior art keywords
blades
fan
air flow
opposing
fan blade
Prior art date
Application number
PCT/CN2006/000177
Other languages
French (fr)
Chinese (zh)
Inventor
Hangao Zhao
Original Assignee
Hangao Zhao
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hangao Zhao filed Critical Hangao Zhao
Priority to PCT/CN2006/000177 priority Critical patent/WO2007085124A1/en
Publication of WO2007085124A1 publication Critical patent/WO2007085124A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/327—Rotors specially for elastic fluids for axial flow pumps for axial flow fans with non identical blades

Definitions

  • the present invention relates to a fan component, and more particularly to an oscillating airflow low noise composite fan blade.
  • the fan is a type of air supply device, and the output of the wind accelerates the flow of air to provide a heat dissipation effect. More commonly used is an axial flow fan that axially discharges a pressurized air flow.
  • the blades of an axial fan are typically composed of rims and blades spaced equidistantly spaced around the circumference of the rim. When the blade rotates, the blades disposed at the periphery of the rim perform the wind-lifting work of the gas, and the generated wind pressure and flow rate are axially discharged. Therefore, it can cool and dissipate objects placed on the front or back.
  • the technical problem to be solved by the present invention is to make up for the defects of the prior art, and to provide an oscillating airflow low noise composite fan blade which can provide an oscillating airflow of a turbulent eddy current.
  • the oscillating airflow low-noise composite fan blade comprises: a rim and a plurality of blades equidistantly spaced apart at a periphery thereof, wherein: the blades of the rim are symmetrically provided with opposite blades facing the windward surface.
  • the oscillating airflow low-noise composite fan blade of the invention has a scientific design and is reasonable in structure and simple.
  • the reverse airflow outputted by the reverse blade and the forward blade synchronously rotates, and the airflow outputted by the forward blade is impacted to form an oscillating output of the fan turbulent eddy current.
  • This turbulent oscillating fan is especially suitable for the cooling and cooling of the heat sink by the cooling fan.
  • the turbulent eddy current flow formed by it can dissipate the stable gas film attached to the surface of the heat sink, accelerate the heat transfer of the heat sink to the air, thereby improving heat dissipation efficiency, reducing the use cost, and saving energy.
  • the fan blade adopts the forward and reverse bidirectional blades, which can make the fan blade inlet surface distribution in the high speed rotation uniform and reasonable, thereby reducing the fan blade running noise.
  • Figure 1 is a schematic view showing the structure of an oscillating airflow low noise composite fan blade.
  • Embodiment It can be clearly seen from Fig. 1 that this is an oscillating airflow low-noise composite fan blade used in a radiator, which is directed by the rim 1 and the windward surface toward the opposite four forward blades 2, four blocks It is composed of the blades 3.
  • the rim 1 has a motor assembly mounting cavity; the four forward blades 1 are equally spaced apart on the circumference of the rim 1; the reverse blades 3 are symmetrically disposed on the circumference of the rim 1 between the forward blades 2, respectively. .
  • the principle of air supply of the low-noise composite fan blade of the oscillating airflow When the blade rotates, the reverse blade and the forward blade disposed at the periphery of the rim also rotate synchronously, and the windward curved surface faces the opposite two sets of blades respectively to cut the gas Lifting work, the two opposite directions of wind pressure and flow axial discharge, the two airflows impact each other during the discharge process, forming an oscillating output of the fan turbulent eddy current.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

An oscillating air flow low-noise composite fan blade includes a hub and an even number of blades equispacedly provided on the perimeter thereof ,wherein the opposing blades are symmetrically provided on the perimeter of th hub between the blades which are curved in the direction opposite to the direction in which the opposing blades are curved .The fan is provided with the opposing blades in addition to the existing blades .The opposing air flow produced by the opposing blades which synchronistically rotates with the positive blades hits the air flow output by the positive blades to form turbulence in the fan . The turbulent oscillation fan especially adapts for cooling fins and dissipating heat .The turbulent oscillating air flow can dissipate the stable air film on the surfaces of the fins to speed up the heat dissipation into the air to increase the dissipating efficiency , low the using cost and save the energy .Moreover , because the fan employs the opposing blades and the positive blades , the blades rotating in high speed have more even and reasonable air-entering surfaces.

Description

振荡气流低噪音复合式风扇扇叶  Oscillating airflow low noise composite fan blade
技术领域 Technical field
本发明涉及的是风扇部件，尤其是一种振荡气流低噪音复合式风 扇扇叶。  The present invention relates to a fan component, and more particularly to an oscillating airflow low noise composite fan blade.
背景技术 Background technique
风扇是一种供风装置， 其输出的风可加速空气的流动，起到散热 的效果。使用较为普遍的是一种轴向排放压力气流的轴流式风扇，轴 流式风扇的扇叶通常由轮轱和等距间隔设置在轮轱之周缘的叶片组 成。扇叶旋转时，设置在轮轱之周缘的叶片对气体进行切风升力作功， 所产生的风压和流量是轴向排放的。因此， 它可以对设置在其正面或 背面的物体进行冷却及散热。 目前，大量用于计算机电脑等电器设备 冷却及散热的大部分为轴流式风扇，尤其是在由风扇和散热片的组合 产品上，散热片齿片表面均有一层不易流动的气膜，这层气膜在衡速 风流经时不易破坏， 其热传导效率大为降低。 为解决这个问题， 通常 采取增加风扇转速和风量的办法。然而， 增加风扇转速和风量会增加 消耗功率和噪音， 不符合环保的趋势和要求。  The fan is a type of air supply device, and the output of the wind accelerates the flow of air to provide a heat dissipation effect. More commonly used is an axial flow fan that axially discharges a pressurized air flow. The blades of an axial fan are typically composed of rims and blades spaced equidistantly spaced around the circumference of the rim. When the blade rotates, the blades disposed at the periphery of the rim perform the wind-lifting work of the gas, and the generated wind pressure and flow rate are axially discharged. Therefore, it can cool and dissipate objects placed on the front or back. At present, most of the cooling and heat dissipation for computer equipment and other electrical equipment are axial flow fans, especially in the combination of the fan and the heat sink, the surface of the fin has a layer of gas film that is not easy to flow. The gas film is not easily destroyed when the constant velocity wind flows, and its heat conduction efficiency is greatly reduced. To solve this problem, it is usually adopted to increase the fan speed and air volume. However, increasing fan speed and air volume increases power consumption and noise, and does not meet environmental trends and requirements.
发明内容 Summary of the invention
本发明所要解决的技术问题是弥补现有技术存在的缺陷，提出一 种可提供湍流涡流的振荡气流的振荡气流低噪音复合式风扇扇叶。  The technical problem to be solved by the present invention is to make up for the defects of the prior art, and to provide an oscillating airflow low noise composite fan blade which can provide an oscillating airflow of a turbulent eddy current.
本发明的技术问题通过以下技术方案予以解决 - 这种振荡气流低噪音复合式风扇扇叶，包括： 轮轱和等距间隔设 置在其周缘的复数块叶片，其特征在于： 轮轱周缘各叶片间对称设有 迎风曲面相反的反向叶片。 The technical problem of the present invention is solved by the following technical solutions - The oscillating airflow low-noise composite fan blade comprises: a rim and a plurality of blades equidistantly spaced apart at a periphery thereof, wherein: the blades of the rim are symmetrically provided with opposite blades facing the windward surface.
' 本发明的振荡气流低噪音复合式风扇扇叶设计科学， 结构合理、 简单。它通过在现有扇叶上增加反向叶片之方式，利用反向叶片与正 向叶片同步旋转时输出的反向气流，冲击正向叶片输出的气流， 形成 扇风的湍流涡流的振荡状输出，这种湍流振荡状扇风尤其适用于散热 风扇对散热片的冷却和散热。它形成的湍流涡流振荡气流可以冲散附 着在散热片表面的稳定气膜，加速散热片向空气中的热传递， 从而提 高散热效率， 降低使用成本， 节约能源。 另外， 这种扇叶由于采用了 正反双向叶片， 它可使得高速旋转中的扇叶进风面分布均匀、 合理， 进而降低扇叶运行噪音。  The oscillating airflow low-noise composite fan blade of the invention has a scientific design and is reasonable in structure and simple. By adding a reverse blade to the existing fan blade, the reverse airflow outputted by the reverse blade and the forward blade synchronously rotates, and the airflow outputted by the forward blade is impacted to form an oscillating output of the fan turbulent eddy current. This turbulent oscillating fan is especially suitable for the cooling and cooling of the heat sink by the cooling fan. The turbulent eddy current flow formed by it can dissipate the stable gas film attached to the surface of the heat sink, accelerate the heat transfer of the heat sink to the air, thereby improving heat dissipation efficiency, reducing the use cost, and saving energy. In addition, the fan blade adopts the forward and reverse bidirectional blades, which can make the fan blade inlet surface distribution in the high speed rotation uniform and reasonable, thereby reducing the fan blade running noise.
本发明振荡气流低噪音复合式风扇扇叶的具体结构由以下附图 和实施例详细给出。  The specific structure of the oscillating airflow low noise composite fan blade of the present invention is detailed in the following figures and embodiments.
附图说明 . BRIEF DESCRIPTION OF THE DRAWINGS
图 1是振荡气流低噪音复合式风扇扇叶的结构示意图。  Figure 1 is a schematic view showing the structure of an oscillating airflow low noise composite fan blade.
具体实施方式 detailed description
实施例：从图 1可以清楚地看到这是一种散热器使用的振荡气流 低噪音复合式风扇扇叶，它由轮轱 1和迎风曲面朝向相反的四块正向 叶片 2、 四块反向叶片 3组成。 所述轮轱 1 有电机组件装配腔； 所 述四块正向叶片 1等距间隔设置在轮轱 1周缘；所述反向叶片 3分别 对称设置在正向叶片 2间之轮轱 1周缘。 . 本振荡气流低噪音复合式风扇扇叶的送风原理： 扇叶旋转时，设 置在轮轱周缘的反向叶片和正向叶片亦同步旋转，迎风曲面朝向相反 的两组叶片分别对气体进行切风升力作功，两种旋向相对的风压和流 量轴向排出， 两种气流在排放过程中相互冲击，形成扇风的湍流涡流 的振荡状输出。 Embodiment: It can be clearly seen from Fig. 1 that this is an oscillating airflow low-noise composite fan blade used in a radiator, which is directed by the rim 1 and the windward surface toward the opposite four forward blades 2, four blocks It is composed of the blades 3. The rim 1 has a motor assembly mounting cavity; the four forward blades 1 are equally spaced apart on the circumference of the rim 1; the reverse blades 3 are symmetrically disposed on the circumference of the rim 1 between the forward blades 2, respectively. . The principle of air supply of the low-noise composite fan blade of the oscillating airflow: When the blade rotates, the reverse blade and the forward blade disposed at the periphery of the rim also rotate synchronously, and the windward curved surface faces the opposite two sets of blades respectively to cut the gas Lifting work, the two opposite directions of wind pressure and flow axial discharge, the two airflows impact each other during the discharge process, forming an oscillating output of the fan turbulent eddy current.
以上内容是结合一个具体的优选实施方式对本发明所作的详细 说明， 不能认定本发明的结构设计只局限于这些说明。对于本所属技 术领域的工程技术人员来说， 在不脱离本发明构思的前提下，还可以 做出若干变化和改进，都应当视为属于本发明由所提交的权利要求书 确定的专利保护范围。  The above is a detailed description of the present invention in connection with a specific preferred embodiment, and the structural design of the present invention is not limited to the description. For those skilled in the art, a number of changes and modifications may be made without departing from the inventive concept, and should be considered as belonging to the scope of patent protection defined by the appended claims. .

Claims

权 利 要 求 书 Claim
1、 一种振荡气流低噪音复合式风扇扇叶， 包括： 轮轱和等距间 隔设置在其周缘上的复数块叶片，其特征在于： 轮轱周缘各叶片间对 称设有迎风曲面相反的反向叶片。 1. An oscillating airflow low-noise composite fan blade, comprising: a rim and a plurality of blades equidistantly spaced apart on a circumference thereof, wherein: the rim of each rim is symmetrically disposed opposite to the windward surface To the blade.
2、 根据权利要求 1所述振荡气流低噪音复合式风扇扇叶， 其特 征在于： 四块正向叶片 （2)等距间隔设置在轮轱（1 ) 周缘； 四块反 向叶片 （3 ) 分别对称设置在正向叶片 （2) 间之轮轱 （1 ) 周缘。  2. The oscillating airflow low noise composite fan blade according to claim 1, wherein: four forward blades (2) are equally spaced around the circumference of the rim (1); four reverse blades (3) They are symmetrically placed on the circumference of the rim (1) between the forward blades (2).
3、 根据权利要求 1或 2所述振荡气流低噪音复合式风扇扇叶， 其特征在于： 所述轮轱 （1 ) 设有电机组件装配腔。  3. The oscillating airflow low noise composite fan blade according to claim 1 or 2, characterized in that: the rim (1) is provided with a motor assembly mounting cavity.
PCT/CN2006/000177 2006-01-26 2006-01-26 Oscillating air flow low-noise composite fan blade WO2007085124A1 (en)

Priority Applications (1)

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PCT/CN2006/000177 WO2007085124A1 (en) 2006-01-26 2006-01-26 Oscillating air flow low-noise composite fan blade

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2662573A1 (en) * 2012-05-11 2013-11-13 SilverStone Technology Co., Ltd. Heat dissipating fan and fan wheel
CN104791266A (en) * 2015-04-02 2015-07-22 周玉红 Silent fan of xylene distilling machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2256955Y (en) * 1995-10-17 1997-06-25 浙江省桐乡市三星保安电器厂 Bidirectional vane wheel for scavenger fan
CN2374678Y (en) * 1999-04-30 2000-04-19 柴岩芝 Two-way fan
CN2374814Y (en) * 1999-04-30 2000-04-19 柴岩芝 Two-way equivalent warm air interchanger
CN1272597A (en) * 1999-04-30 2000-11-08 柴岩芝 Two-way blower fan

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2256955Y (en) * 1995-10-17 1997-06-25 浙江省桐乡市三星保安电器厂 Bidirectional vane wheel for scavenger fan
CN2374678Y (en) * 1999-04-30 2000-04-19 柴岩芝 Two-way fan
CN2374814Y (en) * 1999-04-30 2000-04-19 柴岩芝 Two-way equivalent warm air interchanger
CN1272597A (en) * 1999-04-30 2000-11-08 柴岩芝 Two-way blower fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2662573A1 (en) * 2012-05-11 2013-11-13 SilverStone Technology Co., Ltd. Heat dissipating fan and fan wheel
CN104791266A (en) * 2015-04-02 2015-07-22 周玉红 Silent fan of xylene distilling machine

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