WO2020042551A1 - 一种轴流风轮及其应用的轴流风机 - Google Patents

一种轴流风轮及其应用的轴流风机 Download PDF

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Publication number
WO2020042551A1
WO2020042551A1 PCT/CN2019/076279 CN2019076279W WO2020042551A1 WO 2020042551 A1 WO2020042551 A1 WO 2020042551A1 CN 2019076279 W CN2019076279 W CN 2019076279W WO 2020042551 A1 WO2020042551 A1 WO 2020042551A1
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edge
axial
distance
intersection point
intersection
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PCT/CN2019/076279
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English (en)
French (fr)
Inventor
王鸿彬
王凤琪
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中山大洋电机股份有限公司
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Priority to US16/702,496 priority Critical patent/US11286946B2/en
Publication of WO2020042551A1 publication Critical patent/WO2020042551A1/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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • 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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D19/00—Axial-flow pumps
    • F04D19/002—Axial flow fans
    • 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
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • F04D29/386—Skewed 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • 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
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/303—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the leading edge of a rotor blade

Definitions

  • the utility model relates to an axial-flow wind wheel and an applied axial-flow fan.
  • the existing axial fan includes a motor and an axial fan mounted on the motor.
  • the axial fan includes a hub and a plurality of blades.
  • the blades include a pressure surface and a suction surface.
  • the pressure surface and the suction surface are formed by an inner edge and an outer surface. It is surrounded by the edge, the leading edge and the trailing edge.
  • the inner edge is connected to the hub, and an air duct is formed between two adjacent blades.
  • the shape of the blade, the change in radial length, and the deflection angle of the pressure surface relative to the hub end face directly affect the direction and size of the air duct. It can be said that the various structural parameters of the blade are axial flow fans
  • the size of the wind is the key, but the shape parameter design of the existing blades is unsatisfactory, and the wind of the axial fan is not large enough.
  • the purpose of the utility model is to provide an axial-flow fan and an applied axial-flow fan, which can solve the problem of insufficient wind power of the axial-flow fan.
  • the first object of the present invention is to provide an axial-flow wind wheel, which includes a hub and a plurality of blades.
  • the blades include a pressure surface and a suction surface.
  • the pressure surface and the suction surface are composed of an inner edge, an outer edge, a leading edge, and a tail.
  • the inner edge is connected to the hub, and in the plan view of the orthographic projection, the maximum distance from the center O of the hub to the outer edge of the blade is the outer diameter R of the impeller, and the intersection point of the leading edge and the inner edge Is A1, the distance R1 from the intersection point A1 to the center O, the leading edge and the outer edge are connected by a curved edge, the intersection point of the curved edge and the leading edge is A2, and the distance R2 from the intersection point A2 to the center O; the distance R1
  • the distance between R2 and the outer diameter R of the impeller satisfies 0.35R ⁇ R1 ⁇ 0.45R and 0.8R ⁇ R2 ⁇ 0.9R.
  • the above-mentioned distance R2 and the outer diameter R of the impeller satisfy 0.85R ⁇ R2 ⁇ 0.87R, and an intersection circle is set with the center O as the center and the distance R2 as the radius.
  • the intersection point of the intersection circle and the trailing edge is A3, and the connection line OA2
  • the included angle ⁇ of the connecting line OA3 satisfies 65 ° ⁇ 66 °, and the circumferential length A2A3 formed by the blades at the intersection point A2 along the intersection circle is the largest.
  • intersection point between the trailing edge and the inner edge is A4, and the angle ⁇ between the connecting line OA1 and the connecting line OA4 satisfies 61.5 ° ⁇ ⁇ ⁇ 62.5 °.
  • the included angle ⁇ of the above-mentioned connection lines OA1 and OA2 satisfies 29.5 ° ⁇ ⁇ ⁇ 30.5 °.
  • connection line L between the intersection point A1 and the intersection point A2 and the angle ⁇ between the connection line L and the hub end face satisfies 16 ° ⁇ ⁇ ⁇ 17.2.
  • the number of the several blades mentioned above is four.
  • An axial fan includes a motor and an axial fan, a current collector and a net cover installed on the motor.
  • the axial fan is the axial fan described above.
  • the maximum distance from the hub center O to the outer edge of the blade is the outer diameter R of the impeller, the intersection point between the leading edge and the inner edge is A1, and the distance R1 from the intersection point A1 to the center O.
  • the leading edge and The outer edges are connected by curved edges.
  • intersection point between the curved edge and the leading edge is A2, and the distance R2 from the intersection point A2 to the center O; the circumferential length of the blade at the intersection point A2 is the largest, the distance R1, the distance R2 and The impeller outer diameter R satisfies 0.35R ⁇ R1 ⁇ 0.45R, 0.8R ⁇ R2 ⁇ 0.9R; while making the area of the blade as large as possible to produce greater turbulence, the reasonable size of the air duct is ensured and the air velocity is increased Increase wind power;
  • the distance R2 and the outer diameter R of the impeller satisfy 0.85R ⁇ R2 ⁇ 0.87R, and an intersection circle is formed with the center O as the center and the distance R2 as the radius.
  • the intersection point of the intersection circle and the trailing edge is A3.
  • the angle ⁇ between OA2 and line OA3 satisfies 65 ° ⁇ 66 °; the intersection point of the trailing edge and the inner edge is A4, and the angle ⁇ between line OA1 and line OA4 satisfies 61.5 ° ⁇ 62.5 °;
  • the included angle ⁇ of the connecting line OA1 and the connecting line OA2 satisfies 29.5 ° ⁇ 30.5 °;
  • the blade shape is simple, the design is reasonable, and the circumferential length of the air duct is substantially the same from the inner edge to the outer edge;
  • connection line L between the intersection point A1 and the intersection point A2 and the included angle ⁇ between the connection line L and the hub end face satisfies 16 ° ⁇ 17.2, and the deviation angle of the air duct is reasonable, so that Higher wind speed and wind;
  • the axial flow fan improves the wind speed by improving the blade shape of the axial flow wheel.
  • FIG. 1 is a schematic structural diagram of an axial-flow wind wheel according to the first embodiment of the present invention
  • FIG. 2 is a top view of an axial-flow wind wheel provided by the first embodiment of the present invention.
  • FIG. 3 is a front view of an axial-flow wind wheel provided by the first embodiment of the present invention.
  • FIG. 4 is a perspective view of an axial-flow wind wheel provided with a single wind blade according to the first embodiment of the present invention
  • FIG. 5 is a sectional view taken along the line B-B of FIG. 4;
  • FIG. 6 is a schematic structural diagram of an axial flow fan provided in Embodiment 2 of the present invention.
  • this embodiment provides an axial-flow wind wheel including a hub 2 and a plurality of blades 1.
  • the blade 1 includes a pressure surface 11 and a suction surface 12, and the pressure surface 11 and the suction surface 12 It is surrounded by an inner edge 13, an outer edge 14, a leading edge 15, and a trailing edge 16.
  • the inner edge 13 is connected to the hub 2 and an air duct 31 is formed between two adjacent blades.
  • the maximum distance from the center O of the hub 2 to the outer edge 14 of the blade 1 is the outer diameter R of the impeller
  • the intersection point of the leading edge 15 and the inner edge 13 is A1
  • the distance R1 from the intersection point A1 to the center O, the leading edge 15 and the outer edge 14 are connected by a curved edge 17, the intersection point of the curved edge 17 and the leading edge 15 is A2, the distance R2 from the intersection point A2 to the center O
  • the distance R1, the distance R2 and the outer diameter R of the impeller Meet 0.35R ⁇ R1 ⁇ 0.45R, 0.8R ⁇ R2 ⁇ 0.9R.
  • the above-mentioned distance R2 and the outer diameter R of the impeller satisfy 0.85R ⁇ R2 ⁇ 0.87R, with the center O as the center and the distance R2 as the radius to make an intersection circle 18, and the intersection point of the intersection circle 18 and the trailing edge 16 is A3,
  • the included angle ⁇ of the connecting line OA2 and the connecting line OA3 satisfies 65 ° ⁇ ⁇ ⁇ 66 °.
  • the circumferential length A2A3 formed by the blade 1 at the intersection point A2 along the intersection circle 18 is the largest.
  • intersection point of the trailing edge 16 and the inner edge 13 is A4, and the angle ⁇ between the connecting line OA1 and the connecting line OA4 meets 61.5 ° ⁇ ⁇ ⁇ 62.5 °.
  • the included angle ⁇ of the above-mentioned connection lines OA1 and OA2 satisfies 29.5 ° ⁇ ⁇ ⁇ 30.5 °.
  • connection line L between the intersection point A1 and the intersection point A2 and the included angle ⁇ between the connection line L and the end face of the hub 2 satisfies 16 ° ⁇ ⁇ ⁇ 17.2 °.
  • the number of the plurality of blades 1 is four.
  • this embodiment provides an axial fan, which includes a motor 4 and an axial fan 3, a collector 5, and a net cover 6 installed on the motor 4.
  • the axial fan 3 The axial flow wind wheel according to the first embodiment.

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

Abstract

一种轴流风轮及轴流风机，轴流风轮包括轮毂（2）和若干叶片（1），叶片（1）包括压力面（11）和吸力面（12），压力面（11）和吸力面（12）是由内缘（13）、外缘（14）、前缘（15）和尾缘（16）围成，内缘（13）与轮毂（2）连接，在正投影俯视图上，轮毂（2）中心O到叶片（1）外缘（14）的最大距离为叶轮外径R，前缘（15）与内缘（13）相交点为A1，A1到O的距离R1，前缘（15）和外缘（14）由弧形边（17）连接，弧形边（17）与前缘（15）相交点为A2，A2到O的距离R2；叶片（1）在A2处的周向长度最大，且满足0.35R≤R1≤0.45R、0.8R≤R2≤0.9R。该轴流风机风速大。

Description

一种轴流风轮及其应用的轴流风机 技术领域：
本实用新型涉及一种轴流风轮及其应用的轴流风机。
背景技术：
现有的轴流风机包括电机和安装在电机上的轴流风轮，轴流风轮包括轮毂和若干叶片，所述叶片包括压力面和吸力面，压力面和吸力面是由内缘、外缘、前缘和尾缘所围成，所述内缘与所述轮毂连接，相邻两个叶片之间形成风道。对于轴流风轮来说，叶片的形状、径向长度的变化、以及压力面相对轮毂端面的偏角，都直接影响到风道的方向和大小，可以说叶片的各个结构参数是轴流风机风力大小的关键，但现有的叶片的形状参数设计不尽人意，轴流风机的风力不够大。
实用新型内容：
本实用新型的目的是提供一种轴流风轮及其应用的轴流风机，能解决轴流风机风力不够大的问题。
本实用新型的目的是通过下述技术方案予以实现的。
本实用新型的第一个目的是提供一种轴流风轮，包括轮毂和若干叶片，所述叶片包括压力面和吸力面，压力面和吸力面是由内缘、外缘、前缘和尾缘所围成，所述内缘与所述轮毂连接，在正投影的俯视图上，所述轮毂的中心O到叶片的外缘的最大距离为叶轮外径R，前缘与内缘的相交点为A1,相交点A1到中心O的距离R1，前缘和外缘之间由弧形边连接，弧形边与前缘的相交点为A2，相交点A2到中心O的距离R2；距离R1、距离R2与叶轮外径R之间满足0.35R≤R1≤0.45R、0.8R≤R2≤0.9R。
上述所述距离R2与叶轮外径R之间满足0.85R≤R2≤0.87R，以中心O为圆心、距离R2为半径作一相交圆，相交圆与尾缘的相交点为A3,连线OA2和连线OA3的夹角α大小满足65°≤α≤66°，叶片在相交点A2处沿着相交圆形成的周向长度A2A3是最大。
上述所述尾缘与内缘的相交点为A4,连线OA1和连线OA4的夹角β大小满足61.5°≤β≤62.5°。
上述所述连线OA1和连线OA2的夹角γ大小满足29.5°≤γ≤30.5°。
上述在所述压力面上，相交点A1与相交点A2的连线L，连线L与轮毂端面之间的夹角δ满足16°≤δ≤17.2。
上述所述若干叶片的数量为四片。
一种轴流风机，包括电机和安装在电机上的轴流风轮、集流器和网罩，其特征在于：所述轴流风轮为上述所述的轴流风轮。
本实用新型与现有技术相比，具有如下效果：
1)所述轴流风轮，轮毂中心O到叶片的外缘的最大距离为叶轮外径R，前缘与内缘的相交点为A1,相交点A1到中心O的距离R1，前缘和外缘之间由弧形边连接，弧形边与前缘的相交点为A2，相交点A2到中心O的距离R2；叶片在相交点A2处的周向长度最大，距离R1、距离R2与叶轮外径R之间满足0.35R≤R1≤0.45R、0.8R≤R2≤0.9R；在使叶片的面积尽量大、制造更大紊流的同时，保证风道的大小合理，加大气流速度，提升风力；
2)所述距离R2与叶轮外径R之间满足0.85R≤R2≤0.87R，以中心O为圆心、距离R2为半径作一相交圆，相交圆与尾缘的相交点为A3,连线OA2和连线OA3的夹角α大小满足65°≤α≤66°；所述尾缘与内缘的相交点为A4,连线OA1和连线OA4的夹角β大小满足61.5°≤β≤62.5°；所述连线OA1和连线OA2的夹角γ大小满足29.5°≤γ≤30.5°；叶片形状简单、设计合理，风道的周向长度从内缘到外缘方向基本一致；
3)在所述压力面上，相交点A1与相交点A2的连线L，连线L与轮毂端面之间的夹角δ满足16°≤δ≤17.2，风道的偏移角度合理，使风速和风力更大；
4)所述轴流风机，通过对轴流风轮的叶片形状进行改良，增大了风速。
附图说明：
图1是本实用新型实施例一提供的轴流风轮的结构示意图；
图2是本实用新型实施例一提供的轴流风轮的俯视图；
图3是本实用新型实施例一提供的轴流风轮的正视图；
图4是本实用新型实施例一提供的安装单个风叶的轴流风轮的立体图；
图5是图4的B-B剖视图；
图6是本实用新型实施例二提供的轴流风机的结构示意图。
具体实施方式：
下面通过具体实施例并结合附图对本实用新型作进一步详细的描述。
实施例一：
如图1至图5所示，本实施例提供的是一种轴流风轮，包括轮毂2和若干叶片1，所述叶片1包括压力面11和吸力面12，压力面11和吸力面12是由内缘13、外缘14、前缘15和尾缘16所围成，所述内缘13与所述轮毂2连接，相邻两个叶片之间形成风道31，在正投影的俯视图上，所述轮毂2的中心O到叶片1的外缘14的最大距离为叶轮外径R，前缘15与内缘13的相交点为A1,相交点A1到中心O的距离R1，前缘15和外缘14之间由弧形边17连接，弧形边17与前缘15的相交点为A2，相交点A2到中心O的距离R2；距离R1、距离R2与叶轮外径R之间满足0.35R≤R1≤0.45R、0.8R≤R2≤0.9R。
上述所述距离R2与叶轮外径R之间满足0.85R≤R2≤0.87R，以中心O为圆心、距离R2为半径作一相交圆18，相交圆18与尾缘16的相交点为A3,连线OA2和连线OA3的夹角α大小满足65°≤α≤66°，叶片1在相交点A2处沿着相交圆18形成的周向长度A2A3是最大。
上述所述尾缘16与内缘13的相交点为A4,连线OA1和连线OA4的夹角β大小满足61.5°≤β≤62.5°。
上述所述连线OA1和连线OA2的夹角γ大小满足29.5°≤γ≤30.5°。
上述在所述压力面11上，相交点A1与相交点A2的连线L，连线L与轮毂2端面之间的夹角δ满足16°≤δ≤17.2°。
上述所述若干叶片1的数量为四片。
实施例二：
如图6所示，本实施例提供的是一种轴流风机，包括电机4和安装在电机4上的轴流风轮3、集流器5和网罩6，所述轴流风轮3为实施例一所述的轴流风轮。
以上实施例为本实用新型的较佳实施方式，但本实用新型的实施方式不限于此，其他任何未背离本实用新型的精神实质与原理下所作的改变、修饰、替代、组合、简化，均为等效的置换方式，都包含在本实用新型的保护范围之内。

Claims (7)

  1. 一种轴流风轮，包括轮毂(2)和若干叶片(1)，所述叶片(1)包括压力面(11)和吸力面(12)，压力面(11)和吸力面(12)是由内缘(13)、外缘(14)、前缘(15)和尾缘(16)所围成，所述内缘(13)与所述轮毂(2)连接，其特征在于：在正投影的俯视图上，所述轮毂(2)的中心O到叶片(1)的外缘(14)的最大距离为叶轮外径R，前缘(15)与内缘(13)的相交点为A1,相交点A1到中心O的距离R1，前缘(15)和外缘(14)之间由弧形边(17)连接，弧形边(17)与前缘(15)的相交点为A2，相交点A2到中心O的距离R2；距离R1、距离R2与叶轮外径R之间满足0.35R≤R1≤0.45R、0.8R≤R2≤0.9R。
  2. 根据权利要求1所述的一种轴流风轮，其特征在于：所述距离R2与叶轮外径R之间满足0.85R≤R2≤0.87R，以中心O为圆心、距离R2为半径作一相交圆(18)，相交圆(18)与尾缘(16)的相交点为A3,连线OA2和连线OA3的夹角α大小满足65°≤α≤66°，叶片(1)在相交点A2处沿着相交圆(18)形成的周向长度A2A3是最大。
  3. 根据权利要求2所述的一种轴流风轮，其特征在于：所述尾缘(16)与内缘(13)的相交点为A4,连线OA1和连线OA4的夹角β大小满足61.5°≤β≤62.5°。
  4. 根据权利要求3所述的一种轴流风轮，其特征在于：所述连线OA1和连线OA2的夹角γ大小满足29.5°≤γ≤30.5°。
  5. 根据权利要求1至4中任意所述的一种轴流风轮，其特征在于：在所述压力面(11)上，相交点A1与相交点A2的连线L，连线L与轮毂(2)端面之间的夹角δ满足16°≤δ≤17.2°。
  6. 根据权利要求5所述的一种轴流风轮，其特征在于：所述若干叶片(1)的数量为四片。
  7. 一种轴流风机，包括电机(4)和安装在电机(4)上的轴流风轮(3)、 集流器(5)和网罩(6)，其特征在于：所述轴流风轮(3)为权利要求1至6中任意一项所述的轴流风轮。
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CN110259722A (zh) * 2019-07-24 2019-09-20 陕西金翼通风科技有限公司 一种轴流风机用降噪叶轮
CN113898608A (zh) * 2021-09-29 2022-01-07 广东美的厨房电器制造有限公司 扇叶、风机和家电设备

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