WO2021128803A1 - 轴流叶轮 - Google Patents

轴流叶轮 Download PDF

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Publication number
WO2021128803A1
WO2021128803A1 PCT/CN2020/100633 CN2020100633W WO2021128803A1 WO 2021128803 A1 WO2021128803 A1 WO 2021128803A1 CN 2020100633 W CN2020100633 W CN 2020100633W WO 2021128803 A1 WO2021128803 A1 WO 2021128803A1
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WO
WIPO (PCT)
Prior art keywords
side wall
edge
flow impeller
protrusions
axial flow
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PCT/CN2020/100633
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English (en)
French (fr)
Inventor
邹健
潘宏林
王振鹏
Original Assignee
依必安派特风机(上海)有限公司
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Application filed by 依必安派特风机(上海)有限公司 filed Critical 依必安派特风机(上海)有限公司
Priority to EP20816374.1A priority Critical patent/EP3872352B1/en
Publication of WO2021128803A1 publication Critical patent/WO2021128803A1/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
    • F04D29/329—Details of the hub
    • 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
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/182—Two-dimensional patterned crenellated, notched
    • 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
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/183—Two-dimensional patterned zigzag
    • 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
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/184—Two-dimensional patterned sinusoidal
    • 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
    • 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
    • F05D2260/00—Function
    • F05D2260/02—Transport and handling during maintenance and repair

Definitions

  • This application relates to the technical field of axial flow fans, for example, to an axial flow impeller.
  • Fan is widely used in ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; cooling and ventilation in air conditioning equipment and household appliances.
  • Fan is a machine used to transport gas. From an energy point of view, it is a machine that converts the mechanical energy of the prime mover into gas energy.
  • the classification of fans can be divided into centrifugal, axial, diagonal and cross flow according to the direction of gas flow.
  • the power machine drives the impeller to rotate in the cylindrical casing, and the gas enters from the collector, obtains energy through the impeller, increases the pressure and speed, and then discharges in the axial direction.
  • the impeller is the main component of the fan. Its geometry, size, number of blades and manufacturing accuracy have a great influence on performance.
  • an impeller made of aluminum alloy cold pressing is commonly used.
  • the fan operates with low efficiency, high energy consumption, and high noise.
  • the impeller is prone to deformation due to unstable stacking during transportation and use, and cannot be repaired once the deformation occurs. Although it can be replaced by plastic materials of the same structure, it still cannot solve the problems of efficiency and noise.
  • the present application provides an axial flow impeller, which can solve the problems of high noise, unstable stacking and easy deformation during transportation.
  • An embodiment provides an axial flow impeller, including:
  • a central hub the central hub includes a base plate and a stacked side wall, the stacked side wall is arranged on an edge of the base plate, and a first edge of the stacked side wall extending in the axial direction is provided with a plurality of first protrusions A raised portion, a first recessed portion is provided between two adjacent first raised portions, a second edge of the stacking side wall extending in the axial direction is provided with a plurality of second raised portions, two adjacent A second concave portion is provided between the second convex portions, and the first convex portion and the second concave portion correspond one-to-one in the axial direction, and the first concave portion and the second convex portion correspond to each other in the axial direction.
  • the starting parts correspond to each other along the axial direction;
  • a plurality of blades are arranged along the outer surface of the stacked side wall, and the edge connecting the blade and the stacked side wall extends from the edge of one of the first protrusions to the adjacent one The edge of the second protrusion.
  • Fig. 1 is a schematic view of the structure of the axial flow impeller of the present application from a perspective;
  • Fig. 2 is a schematic view of another view of the structure of the axial flow impeller of the present application.
  • connection shall be interpreted broadly. For example, they may be fixedly connected, detachably connected, or integrated. ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components.
  • connection may be fixedly connected, detachably connected, or integrated. ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components or the interaction relationship between two components.
  • the "above” or “below” of the first feature of the second feature may include direct contact between the first and second features, or may include the first and second features Not in direct contact but through other features between them.
  • “above”, “above” and “above” the second feature of the first feature include the first feature being directly above and obliquely above the second feature, or it simply means that the level of the first feature is higher than that of the second feature.
  • the “below”, “below” and “below” the first feature of the second feature include the first feature directly below and obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.
  • the terms “upper”, “lower”, “right”, and other orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of operations, rather than indications. It may also imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.
  • the terms “first” and “second” are only used to distinguish them in description, and have no special meaning.
  • the application provides an axial flow impeller, which can be used on a fan.
  • the axial flow impeller includes: a central hub 1 and blades 2, and a plurality of blades 2 are arranged along the circumferential direction of the central hub 1.
  • the central hub 1 includes a base plate 11 and a stacking side wall 12, the stacking side wall 12 is arranged on the edge of the base plate 11, and the first edge of the stacking side wall 12 extending in the axial direction is provided with a plurality of first protrusions 121, A first recess 122 is provided between two adjacent first protrusions 121, a second edge of the stacking side wall 12 extending in the axial direction is provided with a plurality of second protrusions 123, and two adjacent second protrusions 123 are provided.
  • a second concave portion 124 is provided between the raised portions 123.
  • the first convex portion 121 and the second concave portion 124 correspond to each other in the axial direction, and the first concave portion 122 and the second convex portion 123 correspond to each other in the axial direction. .
  • the central hub 1 is provided with a stacking side wall 12 for stacking.
  • a first edge of the stacking side wall 12 extending in the axial direction can be axially matched with a second edge of the other stacking side wall 12 extending in the axial direction, thereby optimizing
  • the stacking effect of two axial flow impellers can effectively reduce the weight by 20% for a single axial flow impeller and reduce the transportation cost.
  • a plurality of blades 2 are arranged along the outer surface of the stacked side wall 12, and the edge of the blade 2 connecting the stacked side wall 12 extends from the edge of one first protrusion 121 to the edge of the adjacent second protrusion 123.
  • the edge of the blade 2 connected to the stacking side wall 12 is limited between the first edge and the second edge of the stacking side wall 12, so the blades 2 of the upper and lower axial flow impellers will not interfere with each other after stacking, and the axial flow impeller is better ⁇ Stacked.
  • the base plate 11 includes a mounting portion 111 and a ring portion 112 provided on the outer periphery of the mounting portion 111.
  • the mounting portion 111 is provided with a mounting hole 1111.
  • the front and rear surfaces of the ring portion 112 are both provided with support ribs.
  • the mounting portion 111 is provided with a mounting hole 1111 to mount the axial flow impeller on the main body of the fan, and the annular portion 112 is provided with support ribs to improve the strength of the axial flow impeller.
  • the supporting ribs include a first supporting rib group 113 arranged on the front surface of the annular portion 112 and a second supporting rib group 114 arranged on the rear surface of the annular portion 112.
  • the shapes of the first supporting rib group 113 and the second supporting rib group 114 different.
  • Disposing the first supporting rib group 113 and the second supporting rib group 114 on both sides of the annular portion 112 can increase the strength of the axial flow impeller.
  • the first supporting rib group 113 and the second supporting rib group 114 have different shapes, which makes it easier to Identify the mounting surface of the axial flow impeller.
  • the plurality of first supporting ribs of the first supporting rib group 113 extend in the rotation direction, and the height of the first supporting ribs extending in the axial direction gradually increases from the first end close to the mounting portion 111 to the second end away from the mounting portion 111.
  • the first supporting rib group 113 When the axial flow impeller is rotating, the first supporting rib group 113 will generate centrifugal airflow, which optimizes the efficiency of the airflow through the blades 2, thereby achieving the effect of energy saving and emission reduction. At the same time, it can take away the dust accumulated in the blades 2 and reduce the accumulation of dust. The increase in load caused by dust can effectively prevent the accumulation of dust and condensate.
  • the plurality of second supporting ribs of the second supporting rib group 114 extend along the radial direction of the central hub 1, and the height of the second supporting ribs extending in the axial direction is from the first end close to the mounting portion 111 to the second end away from the mounting portion 111 gradually increase.
  • the second supporting rib is linear, and the first supporting rib is curvilinear.
  • the shapes of the two are different, so that it is convenient to distinguish the installation surface of the axial flow impeller from suction and blowing.
  • the blade 2 is provided with a plurality of mutually parallel ribs 21 at the first end close to the central hub 1.
  • the arrangement direction of the ribs 21 forms an angle with the radial direction of the central hub 1.
  • the length of the ribs 21 closer to the center hub 1 is smaller, that is, the ribs 21 that are parallel to each other gradually increase in a direction away from the center hub 1.
  • the convex rib 21 and the second supporting rib group 114 are arranged on the same surface of the blade 2. At this time, the surface of the blade 2 provided with the convex ribs 21 and the second supporting rib group 114 serves as a positive pressure surface, and the blade 2 is provided with the surface of the first supporting rib group 113 as a negative pressure surface.
  • the blade 2 is provided with a reinforcing rib 22 at the second end away from the central hub 1. Providing the reinforcing rib 22 can increase the strength of the blade 2.
  • the reinforcing ribs 22 are provided on both surfaces of the blade 2.

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

Abstract

一种轴流叶轮，包括：中心轮毂（1），包括底座板（11）和堆叠侧壁（12），所述堆叠侧壁（12）设置在所述底座板（11）的边缘，所述堆叠侧壁（12）的沿轴向延伸的第一边缘设有多个第一凸起部（121），相邻两个所述第一凸起部（121）之间设有第一凹陷部（122），所述堆叠侧壁（12）沿轴向延伸的第二边缘设有多个第二凸起部（123），相邻两个所述第二凸起部（123）之间设有第二凹陷部（124），所述第一凸起部（121）和所述第二凹陷部（124）沿轴向一一对应，所述第一凹陷部（122）和所述第二凸起部（123）沿轴向一一对应；多个叶片（2），沿所述堆叠侧壁（12）的外表面设置，所述叶片（2）与所述堆叠侧壁（12）连接的边缘从一个所述第一凸起部（121）的边缘延伸至相邻的所述第二凸起部（123）的边缘。

Description

轴流叶轮
本申请要求申请日为2019年12月27日、申请号为201922403606.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及轴流风机技术领域，例如涉及一种轴流叶轮。
背景技术
风机广泛的应用于工厂、矿井、隧道、冷却塔、车辆、船舶和建筑物的通风、排尘和冷却；空气调节设备和家用电器设备中的冷却和通风。风机是用于输送气体的机械，从能量观点看，它是把原动机的机械能转变为气体能量的一种机械。风机分类可以按气体流动的方向，分为离心式、轴流式、斜流式和横流式等类型。
轴流式风机工作时，动力机驱动叶轮在圆筒形机壳内旋转，气体从集流器进入，通过叶轮获得能量，提高压力和速度，然后沿轴向排出。叶轮是风机的主要部件，它的几何形状、尺寸、叶片数目和制造精度对性能有很大影响。
在轴流风机的结构设计和生产中，常用一种由铝合金冷压成型而制作的叶轮，风机运行时效率低，能耗高，并且噪音大。
另外，这种叶轮容易在运输和使用的过程由于堆叠不稳容易发生变形，并且一旦发生变形基本无法进行修复。虽然可以又用相同结构的塑料材料来替代，但仍然无法解决效率和噪声的问题。
发明内容
本申请提供了一种轴流叶轮，能够解决噪音大、运输时堆叠不稳容易变形的问题。
一实施例提供一种轴流叶轮，包括：
中心轮毂，所述中心轮毂包括底座板和堆叠侧壁，所述堆叠侧壁设置在所述底座板的边缘，所述堆叠侧壁的沿轴向延伸的第一边缘设有多个第一凸起部，相邻两个所述第一凸起部之间设有第一凹陷部，所述堆叠侧壁的沿轴向延伸的第二边缘设有多个第二凸起部，相邻两个所述第二凸起部之间设有第二凹陷部， 所述第一凸起部和所述第二凹陷部沿轴向一一对应，所述第一凹陷部和所述第二凸起部沿轴向一一对应；
多个叶片，所述多个叶片沿所述堆叠侧壁的外表面设置，所述叶片与所述堆叠侧壁连接的边缘从一个所述第一凸起部的边缘延伸至相邻的所述第二凸起部的边缘。
附图说明
图1是本申请的轴流叶轮的一个视角的结构示意图；
图2是本申请的轴流叶轮的另一个视角的结构示意图。
图中：
1-中心轮毂；2-叶片；
11-底座板；12-堆叠侧壁；21-凸筋；22-加强肋纹；
111-安装部；1111-安装孔；112-环形部；113-第一支撑筋组；114-第二支撑筋组；121-第一凸起部；122-第一凹陷部；123-第二凸起部；124-第二凹陷部。
具体实施方式
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“右”、等方位或位置关系为基于 附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
本申请提供一种轴流叶轮，该轴流叶轮可用在风机上。
如图1和图2所示，轴流叶轮包括：中心轮毂1和叶片2，多个叶片2沿中心轮毂1的周向设置。
中心轮毂1包括底座板11和堆叠侧壁12，堆叠侧壁12设置在底座板11的边缘，堆叠侧壁12的沿轴向延伸的第一边缘设有多个第一凸起部121，相邻两个第一凸起部121之间设有第一凹陷部122，堆叠侧壁12的沿轴向延伸的第二边缘设有多个第二凸起部123，相邻两个第二凸起部123之间设有第二凹陷部124，第一凸起部121和第二凹陷部124沿轴向一一对应，第一凹陷部122和第二凸起部123沿轴向一一对应。
中心轮毂1设有用于堆叠的堆叠侧壁12，堆叠侧壁12的沿轴向延伸的第一边缘能够与另一个堆叠侧壁12的沿轴向延伸的第二边缘轴向配合，从而优化了两个轴流叶轮的堆叠效果，同时对于单个轴流叶轮而言，有效减重20％，减小了运输成本。
多个叶片2沿堆叠侧壁12的外表面设置，叶片2连接堆叠侧壁12的边缘从一个第一凸起部121的边缘延伸至相邻的第二凸起部123的边缘。叶片2连接在堆叠侧壁12的边缘限制在堆叠侧壁12的第一边缘和第二边缘之间，因此上下两层轴流叶轮的叶片2在堆叠后不会相互干涉，轴流叶轮更好地堆叠。
底座板11包括安装部111和设置在安装部111外周的环形部112，安装部111设有安装孔1111，环形部112的前后表面均设有支撑筋。安装部111设有安装孔1111从而将轴流叶轮安装在风机主体上，环形部112上设有支撑筋，提高轴流叶轮的强度。
支撑筋包括设置在环形部112的前表面的第一支撑筋组113和设置在环形部112的后表面的第二支撑筋组114，第一支撑筋组113与第二支撑筋组114的形状不同。
在环形部112的两侧表面分别设置第一支撑筋组113和第二支撑筋组114能够提高轴流叶轮的强度，同时第一支撑筋组113和第二支撑筋组114形状不同，从而容易分辨出轴流叶轮的安装面。
第一支撑筋组113的多个第一支撑筋沿旋转方向延伸，第一支撑筋沿轴向延伸的高度从靠近安装部111的第一端向远离安装部111的第二端逐渐增加。
轴流叶轮在旋转时，第一支撑筋组113会产生离心气流，优化气流穿越叶片2间的效率，从而达到节能减排的效果，同时可以带走堆积在叶片2中的灰尘，减少由于堆积灰尘造成的负载增加，可以有效的防止灰尘和冷凝水的堆积。
第二支撑筋组114的多个第二支撑筋沿中心轮毂1的径向延伸，第二支撑筋沿轴向延伸的高度从靠近安装部111的第一端向远离安装部111的第二端逐渐增加。
第二支撑筋为直线形，第一支撑筋为曲线形，两者的形状不同，从而方便区分轴流叶轮的吸风和吹风的安装面。
叶片2在靠近中心轮毂1的第一端设有多条相互平行的凸筋21，凸筋21的排列方向与中心轮毂1的径向之间形成夹角。
针对叶片2的根部进行优化，针对壁厚较薄的叶片2的边缘起到增加强度的效果。
在本实施例中，越靠近中心轮毂1的凸筋21的长度越小，即这些相互平行的凸筋21呈远离中心轮毂1的方向逐渐增长。
凸筋21和第二支撑筋组114设置在叶片2的同一表面。此时，叶片2设置有凸筋21和第二支撑筋组114的表面作为正压面，叶片2设置第一支撑筋组113的表面作为负压面。
可选的，叶片2在远离中心轮毂1的第二端设有加强肋纹22。设置加强肋纹22能够提高叶片2的强度。
可选的，在本实施例中，加强肋纹22设置在叶片2的两个表面。

Claims (8)

  1. 一种轴流叶轮，包括：
    中心轮毂(1)，所述中心轮毂(1)包括底座板(11)和堆叠侧壁(12)，所述堆叠侧壁(12)设置在所述底座板(11)的边缘，所述堆叠侧壁(12)的沿轴向延伸的第一边缘设有多个第一凸起部(121)，相邻两个所述第一凸起部(121)之间设有第一凹陷部(122)，所述堆叠侧壁(12)的沿轴向延伸的第二边缘设有多个第二凸起部(123)，相邻两个所述第二凸起部(123)之间设有第二凹陷部(124)，所述第一凸起部(121)和所述第二凹陷部(124)沿轴向一一对应，所述第一凹陷部(122)和所述第二凸起部(123)沿轴向一一对应；
    多个叶片(2)，所述多个叶片(2)沿所述堆叠侧壁(12)的外表面设置，所述叶片(2)与所述堆叠侧壁(12)连接的边缘从一个所述第一凸起部(121)的边缘延伸至相邻的所述第二凸起部(123)的边缘。
  2. 根据权利要求1所述的轴流叶轮，其中，所述底座板(11)包括安装部(111)和设置在所述安装部(111)外周的环形部(112)，所述安装部(111)设有安装孔(1111)，所述环形部(112)的第一表面和第二表面上设有支撑筋。
  3. 根据权利要求2所述的轴流叶轮，其中，所述支撑筋包括设置在所述环形部(112)的第一表面的第一支撑筋组(113)和设置在所述环形部(112)的第二表面的第二支撑筋组(114)，所述第一支撑筋组(113)与所述第二支撑筋组(114)的形状不同。
  4. 根据权利要求3所述的轴流叶轮，其中，所述第一支撑筋组(113)的多个第一支撑筋沿旋转方向延伸，所述第一支撑筋沿轴向延伸的高度从靠近所述安装部(111)的第一端向远离所述安装部(111)的第二端逐渐增加。
  5. 根据权利要求4所述的轴流叶轮，其中，所述第二支撑筋组(114)的多个第二支撑筋沿所述中心轮毂(1)的径向延伸，所述第二支撑筋沿轴向延伸的高度从靠近所述安装部(111)的第一端向远离所述安装部(111)的第二端逐渐增加。
  6. 根据权利要求5所述的轴流叶轮，其中，所述叶片(2)在靠近所述中心轮毂(1)的第一端设有多条相互平行的凸筋(21)，所述凸筋(21)的排列方向与所述中心轮毂(1)的径向之间形成夹角。
  7. 根据权利要求6所述的轴流叶轮，其中，所述凸筋(21)和所述第二支撑筋组(114)设置在所述叶片(2)的同一表面。
  8. 根据权利要求7所述的轴流叶轮，其中，所述叶片(2)在远离所述中心 轮毂(1)的一端设有加强肋纹(22)。
PCT/CN2020/100633 2019-12-27 2020-07-07 轴流叶轮 WO2021128803A1 (zh)

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