WO2017084465A1 - 离心式散热风扇的叶片导流增益结构 - Google Patents

离心式散热风扇的叶片导流增益结构 Download PDF

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Publication number
WO2017084465A1
WO2017084465A1 PCT/CN2016/102525 CN2016102525W WO2017084465A1 WO 2017084465 A1 WO2017084465 A1 WO 2017084465A1 CN 2016102525 W CN2016102525 W CN 2016102525W WO 2017084465 A1 WO2017084465 A1 WO 2017084465A1
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Prior art keywords
blade
edge portion
slope
gain structure
cooling fan
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PCT/CN2016/102525
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English (en)
French (fr)
Inventor
饶振奇
吴俊贤
黄杖仁
刘建亨
汪尚贤
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苏州聚力电机有限公司
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Publication of WO2017084465A1 publication Critical patent/WO2017084465A1/zh

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    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/30—Vanes
    • 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
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/70—Shape
    • F05D2250/71—Shape curved

Definitions

  • the utility model relates to a partial structure of a cooling fan, in particular to an innovative form of a blade guiding gain structure of a centrifugal cooling fan.
  • the blades of the existing centrifugal cooling fan are set to a certain degree of arc bending shape to produce the desired diversion effect, however, once the industry needs further flow guiding gain requirements, if not by increasing the height or extension length of the blade The way, it is difficult to meet its requirements, but once the height or extension of the blade is expanded, the corresponding fan shell volume and material cost will be relatively increased, resulting in problems that are not in line with better industrial economic benefits. The preferred option that the industry expects.
  • the utility model provides a blade diversion gain structure of a centrifugal cooling fan, and the object thereof aims at an innovative breakthrough in how to develop a new centrifugal fan-type cooling fan blade diversion structure shape which is more ideal and practical.
  • the technical solution adopted by the present invention is: a blade guiding gain structure of a centrifugal cooling fan, the centrifugal cooling fan including a hub and a laterally protruding spacer ring disposed on the hub circumference a plurality of blades on the side, the blade includes a flow guiding surface and a back surface, and the blade has a connecting end and a protruding end, the connecting end is coupled with the circumferential side of the hub; and wherein the blade is connected to the convex end In the proportion of the overall convex elongation formed by the extension end In the range of 60% to 95% of the protruding section, at least one of the pressure-increasing curved edge portions is formed, and the pressure-increasing curved edge portion is formed by a cross-section of the blade itself to be formed into a curved shape of a leaf wall thickness, which is obtained therefrom.
  • the flow guiding surface of the blade forms a concave surface and forms
  • the pressure-increasing curved edge portion of the blade includes a peak edge portion, an inner slope edge portion on both sides of the peak edge portion, and an outer slope edge portion.
  • the inner slope edge portion and the outer slope edge portion are symmetrical to each other.
  • the slope of the inner slope edge portion is greater than the slope of the outer slope edge portion.
  • the slope of the outer slope edge portion is greater than the slope of the inner slope edge portion.
  • the material of the blade is selected from any group of materials consisting of free metal and plastic.
  • the utility model relates to a blade diversion gain structure of a centrifugal cooling fan, which is mainly formed with a pressure-increasing curved edge portion through the blade, and the pressure-increasing curved edge portion is formed into a curved shape of a leaf wall thickness by a cross-section of the blade itself.
  • the invention has the innovative unique structural form and technical features, such as the concave surface of the blade forming a concave surface and the convex surface at the opposite position of the back surface, so that the present invention is related to the existing structure proposed by the background art.
  • the partial pressure boosting of the boosting curved edge part makes the flow field smoother, so that the static pressure can be slightly increased and the flow rate can be reduced under the condition of equal speed, and the noise is greatly reduced; and if the noise is required Under the circumstance, the practical progress of greatly improving the speed and running efficiency can be achieved.
  • Figure 1 is a perspective view of an embodiment of the present invention
  • Figure 2 is an enlarged view of a portion B of Figure 1;
  • Figure 3 is a plan enlarged view of the pressure-increasing edge portion of the embodiment of the present invention.
  • FIG. 4 is a view showing another embodiment of a pressure-increasing curved edge portion according to an embodiment of the present invention.
  • Figure 5 is a view showing still another embodiment of the pressure-increasing edge portion of the embodiment of the present invention.
  • FIG. 1 to FIG. 3 are preferred embodiments of the blade flow guiding gain structure of the centrifugal cooling fan of the present invention.
  • This embodiment is for illustrative purposes only and is not applicable to the patent application. limit.
  • the centrifugal fan A includes a hub 10 and a plurality of blades 20 disposed on the circumferential side of the hub 10 in a laterally convex spacer ring.
  • the blade 20 includes a flow guiding surface 21 and a back surface 22, and the The blade 20 has a connecting end 23 and a protruding end 24, and the connecting end 23 is combined with the circumferential side of the hub 10; and wherein the blade 20 is formed by the connecting end 23 to the convex end 24 in an overall convex elongation ratio Further, at least one pressure-increasing curved edge portion 30 is formed in a range of 60% to 95% of the protruding section, and the pressure-increasing curved edge portion 30 is formed by a cross-sectional section of the blade 20 itself, and is formed by a curved shape of a leaf wall thickness.
  • the flow guiding surface 21 of the blade 20 forms a concave surface 215, and a convex surface 225 is formed at a position opposite to the back surface 22 of the blade 20.
  • the pressure-increasing curved edge portion 30 of the blade 20 may include a peak edge portion 31, an inner slope edge portion 32 positioned on both sides of the peak edge portion 31, and an outer slope edge portion 33.
  • the inner slope edge portion 32 and the outer slope edge portion 33 may have a shape in which the slopes are symmetrical with each other.
  • the slope of the inner slope edge portion 32B may be greater than the slope of the outer slope edge portion 33B.
  • the slope of the outer slope edge portion 33C may be greater than the slope of the inner slope edge portion 32C.
  • the material of the blade 20 may be any one of a group of materials composed of free metal and plastic.
  • the centrifugal cooling fan A of the present invention mainly forms the technical feature of the boosting curved edge portion 30 through the blade 20, so that when the centrifugal cooling fan A rotates (such as the arrow in FIG. 3) As shown by L1, it is possible to generate a local concentrated supercharging action by the boosting curved edge portion 30 provided in each of the blades 20 (as indicated by an arrow L2 in Fig. 3). This makes the flow field smoother. As a result, the static pressure can be slightly increased and the flow rate can be reduced under the condition of equal speed, and the noise can be greatly reduced. If the noise is required, the speed can be greatly increased. Practical advancement with operational performance.
  • the utility model relates to a blade diversion gain structure of a centrifugal cooling fan, which is mainly formed with a pressure-increasing curved edge portion through the blade, and the pressure-increasing curved edge portion is formed into a curved shape of a leaf wall thickness by a cross-section of the blade itself.
  • the invention has the innovative unique structural form and technical features, such as the concave surface of the blade forming a concave surface and the convex surface at the opposite position of the back surface, so that the present invention is related to the existing structure proposed by the background art.
  • the partial pressure boosting of the boosting curved edge part makes the flow field smoother, so that the static pressure can be slightly increased and the flow rate can be reduced under the condition of equal speed, and the noise is greatly reduced; and if the noise is required Under the circumstance, the practical progress of greatly improving the speed and running efficiency can be achieved.

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

Abstract

一种离心式散热风扇的叶片导流增益结构，该离心式散热风扇（A）包括轮毂（10）及呈间隔环设于轮毂（10）周侧的数个叶片（20），叶片（20）包括导流面（21）及背面（22），且叶片（20）具连接端（23）及凸伸端（24）；且该叶片（20）由连接端（23）至凸伸端（24）延伸，在60%至95%凸伸区段范围内形成有升压曲缘部（30），该升压曲缘部（30）呈等叶壁厚度弯曲形态，在该处叶片（20）的导流面（21）形成一凹形面（215），并于叶片（20）的背面（22）相对处形成一凸形面（225）。该离心式散热风扇可通过该升压曲缘部产生局部集中增压作用，使流场更加顺畅。

Description

离心式散热风扇的叶片导流增益结构 技术领域
本实用新型涉及一种散热风扇的局部结构，特别是指一种离心式散热风扇的叶片导流增益结构创新形态。
背景技术
离心式散热风扇在结构设计上，通常必须通过其叶片的形态设计来达到预定的导流效果。
现有离心式散热风扇的叶片虽有设成一定程度的弧弯形态，以产生预期的导流效果，然而，一旦业界需要有进一步的导流增益要求时，若非通过增加叶片的高度或延伸长度的方式，则很难达成其要求，但叶片的高度或延伸长度一旦扩增，其外围相应的风扇壳体体积与材料成本就会相对提高，造成不符较佳产业经济效益的问题，此显非业界所期待的较佳选项。
因此，针对上述现有离心式散热风扇的叶片结构所存在的问题，如何开发一种更具理想实用性的创新结构，实为相关业者须再努力研发突破的目标及方向。
有鉴于此，发明人本于多年从事相关产品的制造开发与设计经验，针对上述目标，详加设计与审慎评估后，终得一确具实用性的本实用新型。
发明内容
本实用新型提供一种离心式散热风扇的叶片导流增益结构，其目的主要针对如何研发出一种更具理想实用性的新式离心式散热风扇叶片导流结构形态为目标加以创新突破。
为达到上述目的，本实用新型采用的技术方案是：一种离心式散热风扇的叶片导流增益结构，所述离心式散热风扇包括一轮毂以及呈侧向凸伸状间隔环设于该轮毂周侧的数个叶片，所述叶片包括一导流面以及一背面，且该叶片具有一连接端以及一凸伸端，该连接端与轮毂周侧结合；且其中，该叶片由连接端至凸伸端所形成的整体凸伸长度比例中的 60％至95％凸伸区段范围内，更形成有至少一升压曲缘部，该升压曲缘部通过叶片本身结构的横断面设成等叶壁厚度弯曲形态构成，得于该处叶片的导流面形成一凹形面，并于叶片的背面相对位处形成一凸形面。
上述技术方案中的有关内容解释如下：
1.上述方案中，所述叶片的升压曲缘部包括一峰缘部、位在该峰缘部两侧的一内坡缘部以及一外坡缘部。
2.上述方案中，所述内坡缘部与外坡缘部为坡度相互对称的形态。
3.上述方案中，所述内坡缘部的坡度大于外坡缘部的坡度。
4.上述方案中，所述外坡缘部的坡度大于内坡缘部的坡度。
5.上述方案中，所述叶片的材质选用自由金属及塑料所组成的材料群组中任一者。
本实用新型的工作原理及优点如下：
本实用新型一种离心式散热风扇的叶片导流增益结构，主要通过所述叶片更形成有升压曲缘部，该升压曲缘部通过叶片本身结构横断面设成等叶壁厚度弯曲形态构成，得于叶片的导流面形成凹形面、背面相对位处则形成凸形面等创新独特结构形态与技术特征，使本实用新型对照背景技术所提现有结构而言，通过所述升压曲缘部产生局部集中增压作用，使流场更加顺畅，故可在等转速要求条件下，让静压略为升高并降低流量，且令噪音大幅降低；而若是在等噪音要求条件下，则可达到大幅提高转速与运转效能的实用进步性。
附图说明
附图1为本实用新型实施例的立体图；
附图2为图1中B部位放大图；
附图3为本实用新型实施例升压曲缘部的平面放大图；
附图4为本实用新型实施例升压曲缘部的另一实施例图；
附图5为本实用新型实施例升压曲缘部的又一实施例图。
以上附图中：A.离心式散热风扇；10.轮毂；20.叶片；21.导流面；215.凹形面；22.背面；225.凸形面；23.连接端；24.凸伸端；30.升压曲缘部；31.峰缘部；32.内坡缘部；32B.内坡缘部；32C.内坡缘部；33.外坡缘部；33B.外坡缘部；33C.外坡缘部。
具体实施方式
下面结合附图及实施例对本实用新型作进一步描述：
实施例：请参阅图1～3所示，为本实用新型离心式散热风扇的叶片导流增益结构的较佳实施例，此实施例仅供说明之用，在专利申请上并不受此结构限制。所述离心式散热风扇A包括一轮毂10以及呈侧向凸伸状间隔环设于该轮毂10周侧的数个叶片20，所述叶片20包括一导流面21及一背面22，且该叶片20具有一连接端23及一凸伸端24，该连接端23与轮毂10周侧结合；且其中，该叶片20由连接端23至凸伸端24所形成的整体凸伸长度比例中的60％至95％凸伸区段范围内更形成有至少一升压曲缘部30，该升压曲缘部30通过叶片20本身结构的横断面设成等叶壁厚度弯曲形态构成，得于该处叶片20的导流面21形成一凹形面215，并于叶片20的背面22相对位处形成一凸形面225。
如图1～3所示，其中所述叶片20的升压曲缘部30可包括一峰缘部31、位在该峰缘部31两侧的一内坡缘部32以及一外坡缘部33；其中，该内坡缘部32与外坡缘部33可为坡度相互对称的形态。
另如图4所示，其中该内坡缘部32B的坡度可大于外坡缘部33B的坡度。
又如图5所示，其中该外坡缘部33C的坡度可大于内坡缘部32C的坡度。
又其中，所述叶片20的材质可选用自由金属及塑料所组成的材料群组中任一者。
通过上述结构组成设计，本实用新型离心式散热风扇A主要通过该叶片20形成有所述升压曲缘部30的技术特征，以当该离心式散热风扇A旋转时(如图3中箭号L1所示)，能够通过各叶片20所设升压曲缘部30产生局部集中增压作用(如图3中箭号L2所示)， 使流场更加顺畅；如此一来，故可在等转速要求条件下，让静压略为升高并降低流量，且令噪音大幅降低；而若是在等噪音要求条件下，则可达到大幅提高转速与运转效能的实用进步性。
功效说明：
本实用新型一种离心式散热风扇的叶片导流增益结构，主要通过所述叶片更形成有升压曲缘部，该升压曲缘部通过叶片本身结构横断面设成等叶壁厚度弯曲形态构成，得于叶片的导流面形成凹形面、背面相对位处则形成凸形面等创新独特结构形态与技术特征，使本实用新型对照背景技术所提现有结构而言，通过所述升压曲缘部产生局部集中增压作用，使流场更加顺畅，故可在等转速要求条件下，让静压略为升高并降低流量，且令噪音大幅降低；而若是在等噪音要求条件下，则可达到大幅提高转速与运转效能的实用进步性。
上述实施例只为说明本实用新型的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本实用新型的内容并据以实施，并不能以此限制本实用新型的保护范围。凡根据本实用新型精神实质所作的等效变化或修饰，都应涵盖在本实用新型的保护范围之内。

Claims (6)

  1. 一种离心式散热风扇的叶片导流增益结构，其特征在于：所述离心式散热风扇包括一轮毂以及呈侧向凸伸状间隔环设于该轮毂周侧的数个叶片，所述叶片包括一导流面以及一背面，且该叶片具有一连接端以及一凸伸端，该连接端与轮毂周侧结合；且其中，该叶片由连接端至凸伸端所形成的整体凸伸长度比例中的60％至95％凸伸区段范围内，更形成有至少一升压曲缘部，该升压曲缘部通过叶片本身结构的横断面设成等叶壁厚度弯曲形态构成，得于该处叶片的导流面形成一凹形面，并于叶片的背面相对位处形成一凸形面。
  2. 根据权利要求1所述的离心式散热风扇的叶片导流增益结构，其特征在于：所述叶片的升压曲缘部包括一峰缘部、位在该峰缘部两侧的一内坡缘部以及一外坡缘部。
  3. 根据权利要求2所述的离心式散热风扇的叶片导流增益结构，其特征在于：所述内坡缘部与外坡缘部为坡度相互对称的形态。
  4. 根据权利要求2所述的离心式散热风扇的叶片导流增益结构，其特征在于：所述内坡缘部的坡度大于外坡缘部的坡度。
  5. 根据权利要求2所述的离心式散热风扇的叶片导流增益结构，其特征在于：所述外坡缘部的坡度大于内坡缘部的坡度。
  6. 根据权利要求1或2所述的离心式散热风扇的叶片导流增益结构，其特征在于：所述叶片的材质选用自由金属及塑料所组成的材料群组中任一者。
PCT/CN2016/102525 2015-11-16 2016-10-19 离心式散热风扇的叶片导流增益结构 WO2017084465A1 (zh)

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