WO2007085123A1 - A composite type fan with low noise fan blades - Google Patents

A composite type fan with low noise fan blades Download PDF

Info

Publication number
WO2007085123A1
WO2007085123A1 PCT/CN2006/000176 CN2006000176W WO2007085123A1 WO 2007085123 A1 WO2007085123 A1 WO 2007085123A1 CN 2006000176 W CN2006000176 W CN 2006000176W WO 2007085123 A1 WO2007085123 A1 WO 2007085123A1
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WO
WIPO (PCT)
Prior art keywords
blades
blade
fan
long
low noise
Prior art date
Application number
PCT/CN2006/000176
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/CN2006/000176 priority Critical patent/WO2007085123A1/en
Publication of WO2007085123A1 publication Critical patent/WO2007085123A1/en

Links

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
    • F04D29/326—Rotors specially for elastic fluids for axial flow pumps for axial flow fans comprising a rotating shroud
    • 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
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/666—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by means of rotor construction or layout, e.g. unequal distribution of blades or vanes

Definitions

  • the present invention relates to a fan component, and more particularly to a composite low noise fan blade. Background technique
  • the blades of existing fans are typically composed of rims and equal length blades spaced equally around the circumference of the rim.
  • a fan equipped with such a fan blade has a high noise when rotating at a high speed.
  • the technical problem to be solved by the present invention is to make up for the defects of the prior art, and propose a composite low noise fan blade which can reduce the fan running noise.
  • the composite low-noise fan blade comprises: a rim and a long blade equidistantly spaced on a circumference thereof, characterized in that: a chip end connected around the long blade
  • the base ring is integrated with the base ring; the inner ring wall of each base blade is provided with at least one windward curved surface facing the short blade which is consistent with the long blade.
  • the short blades are at least one third shorter than the longer blades.
  • the design principle of the composite low-noise fan blade of the invention is: using the short blade arranged synchronously rotating on the periphery of the long blade to improve the entire air inlet surface of the blade, so that each point of the blade is relatively evenly fed, It can reduce the noise caused by the contact with the air during the high-speed rotation of the blade.
  • the fan blades Compared with the traditional single-layer fan blades, the fan blades have a significant noise reduction effect at the same speed and air volume. In addition, in some cases, the air guiding passage outside the fan blade of the axial fan can be omitted.
  • Figure 1 is a schematic view of the structure of a composite low noise fan blade.
  • Fig. 1 It can be clearly seen from Fig. 1 that this is a composite low noise fan blade suitable for mounting on a computer CPU heat sink, which comprises: a long blade provided by a rim 1 and equidistantly spaced on its circumference
  • the blade formed by the blade ring 3 is composed of a base ring 31 and six short blades 32 which are equally spaced apart from each other on the inner ring wall.
  • the six short blades 32 are distributed in the inner ring of the base ring 31 of each long blade 2; the base ring 31 of the fan ring 3 is sleeved on the periphery of the long blade 2 and fixedly connected to form an integral body;
  • the windward curved surfaces of the short blades 32 are identical.
  • the short blade 32 is shorter than the blade 2 by one third;
  • the rim 1 is provided with a motor assembly mounting cavity.

Landscapes

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

Abstract

A composite type fan with low noise fan blades includes a hub and several long blades equally spaced around the circumference of the hub. A base ring is surrounded and connected with the end of the long blades integrally. The inner wall of the base ring located between the spaced long blades is secured at least one short blade, which has windward curved surface in the same orientation with the long blade. To improve the whole intake surface of the blade by means of arranging synchronous rotational short blades in the outer periphery of the long blades,, accordingly, the air can go uniformly through every point on the blades. The technical solution can reduce noise caused by the air contacts with the blades rotating in high speed. The design is scientific and the structure is reasonable and simple. It is to be noted that the fan can reduce noise apparently to compare the invention with the traditional one in same rotation speed and wind amount. In addition, the wind guiding passage arranged in the outer of the axial-flow fan blades can be omitted.

Description

复合式低噪音风扇扇叶  Compound low noise fan blade
技术领域 Technical field
本发明涉及的是风扇部件， 尤其是一种复合式低噪音风扇扇叶。 背景技术  The present invention relates to a fan component, and more particularly to a composite low noise fan blade. Background technique
现有风扇的扇叶通常由轮轱和等距间隔设置在轮轱之周缘的等 长叶片组成。 装有这种结构扇叶的风扇， 高速旋转时， 噪音较大。 发明内容  The blades of existing fans are typically composed of rims and equal length blades spaced equally around the circumference of the rim. A fan equipped with such a fan blade has a high noise when rotating at a high speed. 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 种可降低风扇运行噪音的复合式低噪音风扇扇叶。  The technical problem to be solved by the present invention is to make up for the defects of the prior art, and propose a composite low noise fan blade which can reduce the fan running noise.
本发明的技术问题通过以下技术方案予以解决- 这种复合式低噪音风扇扇叶，包括： 轮轱和等距间隔设置在其周 缘上的长叶片， 其特征在于： 围绕长叶片之片端连接有与其成一体的 基环；各长叶片间隔之基环内环壁至少设有一块迎风曲面朝向与长叶 片相一致的短叶片。  The technical problem of the present invention is solved by the following technical solution - the composite low-noise fan blade comprises: a rim and a long blade equidistantly spaced on a circumference thereof, characterized in that: a chip end connected around the long blade The base ring is integrated with the base ring; the inner ring wall of each base blade is provided with at least one windward curved surface facing the short blade which is consistent with the long blade.
所述短叶片较长叶片至少短三分之一。  The short blades are at least one third shorter than the longer blades.
本发明的复合式低噪音风扇扇叶的设计原理是：利用设置在长叶 片外围同步旋转的短叶片， 改善扇叶的整个进风面， 使得扇叶的每个 点都比较均匀进风，它可以减少扇叶高速旋转过程中与空气激荡接触 所形成的噪音。  The design principle of the composite low-noise fan blade of the invention is: using the short blade arranged synchronously rotating on the periphery of the long blade to improve the entire air inlet surface of the blade, so that each point of the blade is relatively evenly fed, It can reduce the noise caused by the contact with the air during the high-speed rotation of the blade.
本发明的复合式低噪音风扇扇叶的设计设计科学， 结构合理、简  The design and design of the composite low-noise fan blade of the invention is scientific, reasonable and simple
1 1
确 认 本 单。这种扇叶在相同转速和风量情况下与传统单层扇叶相比， 降噪效 果非常明显。另外在一些情况下可以省去轴流风扇扇叶外面的导风通 道。 Confirmation Single. Compared with the traditional single-layer fan blades, the fan blades have a significant noise reduction effect at the same speed and air volume. In addition, in some cases, the air guiding passage outside the fan blade of the axial fan can be omitted.
本发明复合式低噪音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 composite low noise fan blade of the present invention is given in detail by the following figures and examples.
附图说明 DRAWINGS
图 1是复合式低噪音风扇扇叶的结构示意图。  Figure 1 is a schematic view of the structure of a composite low noise 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适用于电脑 CPU散热 片上安装的复合式低噪音风扇扇叶， 它包括： 由轮轱 1和等距间隔设 置在其周缘上的长叶片 2构成的扇叶， 由基环 31和等距间隔设置在 其内环壁上的六块短叶片 32构成的扇叶圈 3。 所述六块短叶片 32分 布在各长叶片 2间隔之基环 31内环壁；所述扇叶圈 3之基圈 31套于 长叶片 2外围并固定连接形成一体； 所述长叶片 2与短叶片 32的迎 风曲面相一致。  Embodiment: It can be clearly seen from Fig. 1 that this is a composite low noise fan blade suitable for mounting on a computer CPU heat sink, which comprises: a long blade provided by a rim 1 and equidistantly spaced on its circumference The blade formed by the blade ring 3 is composed of a base ring 31 and six short blades 32 which are equally spaced apart from each other on the inner ring wall. The six short blades 32 are distributed in the inner ring of the base ring 31 of each long blade 2; the base ring 31 of the fan ring 3 is sleeved on the periphery of the long blade 2 and fixedly connected to form an integral body; The windward curved surfaces of the short blades 32 are identical.
所述短叶片 32较长叶片 2短三分之一；  The short blade 32 is shorter than the blade 2 by one third;
所述轮轱 1设有电机组件装配腔。  The rim 1 is provided with a motor assembly mounting cavity.
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, many 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、 一种复合式低噪音风扇扇叶， 包括： 轮轱和等距间隔设置在 其周缘上的长叶片， 其特征在于： 围绕长叶片之片端连接有与其成一 体的基环；各长叶片间隔之基环内环壁至少设有一块迎风曲面朝向与 长叶片相一致的短叶片。 A composite low-noise fan blade, comprising: a rim and a long blade equidistantly spaced apart on a periphery thereof, wherein: a base ring integrally connected thereto is connected around the end of the long blade; each long blade The inner ring wall of the spacer base ring is provided with at least one windward curved surface facing the short blade corresponding to the long blade.
2、 根据权利要求 1所述复合式低噪音风扇扇叶， 其特征在于： 所述短叶片 （32) 较长叶片 （2) 短三分之一；  2. The composite low noise fan blade according to claim 1, wherein: said short blade (32) has a shorter blade (2) shorter than one third;
3、 根据权利要求 1或 2所述复合式低噪音风扇扇叶， 其特征在 于： 所述轮轱 （1 ) 设有电机组件装配腔。  3. A composite low noise fan blade according to claim 1 or 2, characterized in that: the rim (1) is provided with a motor assembly mounting cavity.
PCT/CN2006/000176 2006-01-26 2006-01-26 A composite type fan with low noise fan blades WO2007085123A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/000176 WO2007085123A1 (en) 2006-01-26 2006-01-26 A composite type fan with low noise fan blades

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2006/000176 WO2007085123A1 (en) 2006-01-26 2006-01-26 A composite type fan with low noise fan blades

Publications (1)

Publication Number Publication Date
WO2007085123A1 true WO2007085123A1 (en) 2007-08-02

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797702A (en) * 2012-08-20 2012-11-28 上海通用风机股份有限公司 Narrowly welded impeller of small-flow centrifugal fan and centrifugal fan
US20230022697A1 (en) * 2021-07-20 2023-01-26 Champ Tech Optical (Foshan) Corporation Fan and electronic device having the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521154A (en) * 1982-01-13 1985-06-04 Corbett Reg D Centrifugal fans
JPH1037893A (en) * 1996-07-26 1998-02-13 Japan Servo Co Ltd Centrifugal fan
EP1174159A2 (en) * 2000-07-19 2002-01-23 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Breathing gas feed device
CN1587714A (en) * 2004-07-19 2005-03-02 吴伟 Low noise high pressure centrifugal fan
CN2697361Y (en) * 2004-03-17 2005-05-04 力致科技股份有限公司 Centrifugal type radiation fan structure for office facilities

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521154A (en) * 1982-01-13 1985-06-04 Corbett Reg D Centrifugal fans
JPH1037893A (en) * 1996-07-26 1998-02-13 Japan Servo Co Ltd Centrifugal fan
EP1174159A2 (en) * 2000-07-19 2002-01-23 MAP Medizintechnik für Arzt und Patient GmbH & Co. KG Breathing gas feed device
CN2697361Y (en) * 2004-03-17 2005-05-04 力致科技股份有限公司 Centrifugal type radiation fan structure for office facilities
CN1587714A (en) * 2004-07-19 2005-03-02 吴伟 Low noise high pressure centrifugal fan

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102797702A (en) * 2012-08-20 2012-11-28 上海通用风机股份有限公司 Narrowly welded impeller of small-flow centrifugal fan and centrifugal fan
US20230022697A1 (en) * 2021-07-20 2023-01-26 Champ Tech Optical (Foshan) Corporation Fan and electronic device having the same
US11765857B2 (en) * 2021-07-20 2023-09-19 Champ Tech Optical (Foshan) Corporation Fan and electronic device having the same

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