WO2021169219A1 - 一种风轮及应用其的风机 - Google Patents

一种风轮及应用其的风机 Download PDF

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Publication number
WO2021169219A1
WO2021169219A1 PCT/CN2020/112383 CN2020112383W WO2021169219A1 WO 2021169219 A1 WO2021169219 A1 WO 2021169219A1 CN 2020112383 W CN2020112383 W CN 2020112383W WO 2021169219 A1 WO2021169219 A1 WO 2021169219A1
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Prior art keywords
wheel
point
wind wheel
tangent
wheel cover
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PCT/CN2020/112383
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English (en)
French (fr)
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徐海明
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中山宜必思科技有限公司
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Publication of WO2021169219A1 publication Critical patent/WO2021169219A1/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
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing

Definitions

  • the utility model relates to a wind wheel and a fan using the wind wheel.
  • the structure of the wind wheel in a conventional centrifugal fan is shown in FIG.
  • the exit profile of the wheel cover 1B and the exit profile of the wheel 1A of the conventional wind wheel are both: a circle with the axis Z1 as the center.
  • the purpose of the utility model is to provide a wind wheel and a fan using the same, which solves the problem that the fan in the prior art makes complicated adjustments to the wind wheel structure in order to reduce noise, increase air volume, and reduce power, resulting in processing difficulties.
  • Technical problem with a significant increase in cost.
  • a wind wheel includes a wheel cover, a wheel disc and several blades.
  • the center of the wheel cover is provided with an air inlet.
  • the upper and lower ends of the several blades are respectively connected to the wheel cover and the wheel disc.
  • the border of the edge and the air duct outlet forms a wheel cover exit profile, and the edge of the roulette and the air duct exit form a roulette exit profile, which is characterized in that the wheel cover exit profile and wheel
  • the outlet profile of the disc constitutes the outlet profile of the wheel cover and/or the radial distance between the points on the outlet profile of the disc and the axis Z of the wind wheel is not equal.
  • the above-mentioned wheel cover exit profile and/or roulette exit profile is divided into the first arc L1 and the second arc L2. Take any point A on the first arc L1, and make this point opposite to the direction of the wind wheel.
  • a tangent line AC tangent to the first arc L1 is the same as the direction of the wind wheel.
  • the radial tangent line AB of this point A is made.
  • the tangent line AC at point A rotates counterclockwise to the radial tangent line AB.
  • ⁇ 1 where the radial tangent AB refers to the straight line perpendicular to the line OA between the center O and the point A; take a point D on the second arc L2, and make the point D and the second arc opposite to the direction of the wind wheel
  • the tangent DE which is tangent to the line L2, is the same as the direction of the wind wheel.
  • the radial tangent DF at this point is made.
  • the tangent DE at point D rotates counterclockwise to the angle ⁇ 2 traveled by the radial tangent DF.
  • the radial tangent DF refers to A straight line perpendicular to the line OD between the center O and the point D, where ⁇ 1 is greater than an angle of 180 degrees, and ⁇ 2 is less than an angle of 180 degrees.
  • the above-mentioned wheel cover export model line is consistent or inconsistent with the roulette export model line up and down.
  • the aforementioned blades are airfoil blades or equal-thickness blades.
  • the trailing edge of the aforementioned blade is provided with a sharp corner.
  • the starting point of the first arc L1 is S1 and the ending point is S2.
  • the starting point of the second arc L2 is S2 and the ending point is S3.
  • the angle between OS1 and OS3 is ⁇ , and the angle between OS1 and OS2 is ⁇ .
  • the angle ⁇ 3 is less than ⁇ /2.
  • a fan includes a volute, a motor and a wind wheel, and is characterized in that the wind wheel is the above-mentioned wind wheel, and the wind wheel is a backward inclined impeller or a forward inclined impeller.
  • the wind wheel of the present invention includes a wheel cover, a wheel disc and a number of blades.
  • the center of the wheel cover is provided with an air inlet.
  • the edge of the wheel cover and the outlet of the air duct form a wheel cover exit profile
  • the edge of the wheel and the air duct exit form a roulette exit profile, which is characterized in that: the exit of the wheel cover is viewed from a top view of a single air duct
  • the molding line and the roulette exit molding line, the radial distances between the points forming the wheel cover exit molding line and/or the roulette exit molding line and the axis Z of the wind wheel are not equal, which can keep the structure simple, easy to open the mold, and make The cost is low, which can increase the exhaust air volume of the whole machine and reduce the noise.
  • Figure 1 is a schematic diagram of the structure of an existing wind wheel
  • Figure 2 is a perspective view of the wind wheel of the first embodiment of the present invention from one angle;
  • Figure 3 is a perspective view from another angle of the wind wheel of the first embodiment of the present invention.
  • Figure 4 is a bottom view of the wind wheel of the first embodiment of the present invention.
  • Figure 5 is a cross-sectional view taken along line A-A of Figure 4.
  • Figure 6 is a side view of the first embodiment of the utility model
  • Figure 7 is a B-B cross-sectional view of this Figure 6;
  • Fig. 8 is a top view of the entire impeller air duct in the first embodiment of the present invention in a cutaway view.
  • this embodiment provides a wind wheel, which includes a wheel cover 1, a wheel disc 2 and a plurality of blades 3.
  • the center of the wheel cover 1 is provided with an air inlet 10, and the upper and lower ends of the plurality of blades 3 are respectively Connected to the wheel cover 1 and the wheel disc 2, an air duct 30 is formed between the adjacent blades 3, the edge of the wheel cover 1 and the air duct outlet 301 form a wheel cover exit profile 11, the edge of the wheel disc 2 and the air duct outlet 301
  • the roulette exit profile 21 is formed at the junction, which is characterized in that: the roulette exit profile 11 and the roulette exit profile 21 are seen from the top view of a single air duct, forming the roulette exit profile 11 and/or the roulette exit profile.
  • the radial distance between the points on the line 21 and the axis Z of the wind wheel is not equal. It has a simple structure, easy mold opening, low production cost, and can effectively increase the exhaust air volume of the whole machine and reduce noise.
  • the top view of a single air duct is as shown in Fig. 7, and the center O is a point on the axis Z of the wind wheel.
  • the wheel cover exit profile 11 and/or the roulette exit profile 21 are divided into a first arc L1 and a second arc L2, the center O and the first arc L1 on the line OA of any point A, or The line OD between the center O and the second arc L2 at any point D is taken, and the radial distance OA or OD from the axis Z of the wind wheel is not equal.
  • the above-mentioned several wheel cover outlet molding lines 11 and/or roulette outlet molding lines 21 are periodically and uniformly distributed around the axis Z in the circumferential direction, the structure is simple, and the manufacturing is easy.
  • the above-mentioned view from the top view of the entire impeller air duct cut off, the intersection of the outer edge of the blade 3 and the outlet profile 11 of the wheel cover or the outlet profile 21 of the disc is S1, and the length of the line OS1 between S1 and the center O is unchanged
  • the point S1 is the inflection point of the two adjacent sections of wheel cover exit profile 11 or the adjacent two sections of wheel exit profile 21.
  • the structure is simple and can effectively increase the exhaust air volume of the whole machine and reduce noise.
  • the above-mentioned wheel cover exit profile 11 and/or roulette exit profile 21 is divided into a first arc L1 and a second arc L2.
  • a point A is randomly selected on the first arc L1, which is opposite to the direction of the wind wheel.
  • the tangent AC at point A rotates counterclockwise to the radial tangent AB.
  • the angle of is ⁇ 1, where the radial tangent AB refers to the straight line perpendicular to the line OA between the center O and the point A; a point D is randomly selected on the second arc L2, and the point D is opposite to the direction of the wind wheel.
  • the tangent DE which is tangent to the two arcs L2, is the same as the direction of the wind wheel.
  • the radial tangent DF is made at this point.
  • radial tangent DF refers to a straight line perpendicular to the line OD between the center O and the point D, where ⁇ 1 is greater than an angle of 180 degrees, and ⁇ 2 is less than an angle of 180 degrees. This design can greatly reduce the noise and increase the exhaust air volume.
  • the above-mentioned ⁇ 1 satisfies: 200 degrees> ⁇ 1>180 degrees; the said ⁇ 2 satisfies: the angle 160 degrees ⁇ 2 ⁇ 180 degrees.
  • the range is reasonable, and the limited guarantee reduces noise and increases exhaust air volume.
  • the aforementioned wheel cover outlet profile 11 and the roulette exit profile 21 are consistent or inconsistent up and down.
  • manufacturing is easier.
  • the wheel cover exit profile 11 and the roulette exit profile 21 are inconsistent up and down, the noise and exhaust volume can be adjusted appropriately.
  • the above-mentioned blade 3 is an airfoil blade or a blade of equal thickness, which has a simple structure and is easy to manufacture.
  • the trailing edge of the aforementioned blade 3 is provided with a sharp corner 31, and the structure is simple.
  • the starting point of the first arc L1 is S1 and the end point is S2
  • the starting point of the second arc L2 is S2
  • the end point is S3, where the angle between OS1 and OS3 is ⁇ , OS1
  • the angle ⁇ 3 to OS2 is less than ⁇ /2, the structure is simple, the manufacturing is easy, and the layout is reasonable.
  • a fan includes a volute, a motor and a wind wheel, and is characterized in that the wind wheel is the wind wheel described in the first embodiment, and the wind wheel is a backward inclined impeller or a forward inclined impeller. It not only keeps the structure simple, easy to open the mold, low production cost, but also can effectively increase the exhaust air volume of the whole machine and reduce the noise.

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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

一种风轮及应用其的风机，风轮包括轮盖（1）、轮盘（2）和若干叶片（3），轮盖（1）的中心设有进风口（10），若干叶片（3）的上下两端分别与轮盖（1）和轮盘（2）连接，相邻叶片（3）间形成风道（30），轮盖（1）的边缘与风道出口（301）配合处形成轮盖出口型线（11），轮盘（2）的边缘与风道出口（301）配合处形成轮盘出口型线（21），轮盖出口型线（11）和轮盘出口型线（21）从单个风道（30）的俯视图来看，轮盖出口型线（11）和轮盘出口型线（21）与风轮轴线Z的径向距离不相等。风轮质量轻，制作成本低，还能提高整机的排风量，噪音低。

Description

一种风轮及应用其的风机 技术领域：
本实用新型涉及一种风轮及应用其的风机。
背景技术：
常规离心风机中的风轮的结构如图1所示，由轮盘1A、轮盖1B、叶片1C三部分组成，相邻叶片1C形成叶道1D。常规风轮的轮盖1B出口型线、轮盘1A出口型线均为：以轴线Z1为圆心的圆形。
目前在风机领域，更大的风量、更低噪音、更低成本是主要的市场需求，也是一个产品在市场上附有竞争力的核心点，而市面上各个公司生产的同类常规风轮在基本结构参数(如风轮进口直径、出口直径、风轮高度)和性能参数(风量、静压、噪音)相差并不太大，导致竞争力并不明显。为了获得更好的一般情况下，为了降低噪音、增大风量、降低功率，各大风机厂家会考虑在风轮轮盖、轮盘、叶片三部分上做改善，如做三维扭曲叶片、三维拱形轮盖、三维扭曲轮盘等。在小范围内改善风机的风量、噪音和功率，但是在成本上较大程度的增加了出模难度及加工难度，明显增大了制造成本。
发明内容：
本实用新型的目的是提供一种一种风轮及应用其的风机，解决现有技术中风机为了降低噪音、增大风量、降低功率而对风轮结构做出复杂的调整导致加工困难，制造成本明显增加的技术问题。
本实用新型的目的是通过下述技术方案予以实现的。
一种风轮,包括轮盖、轮盘和若干叶片，轮盖的中心设有进风口，若干叶片的上下两端分别与轮盖和轮盘连接，相邻叶片间形成风道，轮盖的边缘与风道出口交界处形成轮盖出口型线，轮盘的边缘与风道出口交界处形成轮盘出口型线，其特征在于：从单个风道的俯视图来看轮盖出口型线和轮盘出口型线，构成轮盖出口型线和/或轮盘出口型线上的各点与风轮轴线Z的径向距离不相等。
上述的若干轮盖出口型线和/或轮盘出口型线在周向是绕轴线Z呈周期性 均布的。
上述从整个叶轮风道剖开后的俯视来看,叶片外缘与轮盖出口型线或者轮盘出口型线相交点为S1，S1与中心O的连线OS1的长度是不变的，且点S1为相邻两段轮盖出口型线或者相邻两段轮盘出口型线的拐点。
上述轮盖出口型线和/或轮盘出口型线分成第一段弧线L1和第二段弧线L2，在第一段弧线L1上任意取一点A，与风轮转向相反作该点A与第一段弧线L1相切的切线AC，与风轮转向相同作该点A的径向切线AB，A点处的切线AC沿逆时针旋转至径向切线AB所走过的角度为θ1，其中径向切线AB是指垂直于中心O与点A的连线OA的直线；在第二段弧线L2上任意取一点D，与风轮转向相反作该点D与第二段弧线L2相切的切线DE，与风轮转向相同作该点径向切线DF，D点处的切线DE沿逆时针旋转至径向切线DF所走过的角度为θ2，径向切线DF是指垂直于中心O与点D的连线OD的直线，其中θ1大于180度角，θ2小于180度角。
上述所述θ1满足：200度＞θ1＞180度；所述θ2满足：角度160度＜θ2＜180度。
上述的轮盖出口型线与轮盘出口型线上下一致或不一致。
上述所述的叶片为翼型叶片或者等厚度叶片。
上述所述的叶片的尾缘设有尖角。
上述从俯视图来看第一段弧线L1的起点为S1，终点为S2，第二段弧线L2的起点为S2，终点为S3，其中OS1至OS3的夹角是δ,OS1至OS2的夹角θ3是小于δ/2。
一种风机，包括蜗壳、电机和风轮，其特征在于：所述风轮为上述所述的一种风轮，风轮是后倾叶轮或者是前倾叶轮。
本实用新型与现有技术相比，具有如下效果：
1)本实用新型的风轮包括包括轮盖、轮盘和若干叶片，轮盖的中心设有进风口，若干叶片的上下两端分别与轮盖和轮盘连接，相邻叶片间形成风道，轮 盖的边缘与风道出口交界处形成轮盖出口型线，轮盘的边缘与风道出口交界处形成轮盘出口型线，其特征在于：从单个风道的俯视图来看轮盖出口型线和轮盘出口型线，构成轮盖出口型线和/或轮盘出口型线上的各点与风轮轴线Z的径向距离不相等，既能保持结构简单，开模容易，制作成本低，更能提高整机的排风量，降低噪音。
2)本实用新型的其它优点在实施例作详细的描述。
附图说明：
图1是现有的风轮的结构示意图；
图2是本实用新型实施例一的风轮的一个角度的立体图；
图3是本实用新型实施例一的风轮的另一个角度的立体图；
图4是本实用新型实施例一的风轮的仰视图；
图5是图4的A-A剖视图；
图6是本实用新型实施例一的侧视图；
图7是本图6的B-B剖视图；
图8是本实用新型实施例一整个叶轮风道剖开后的俯视图。
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2至图8所示，本实施例提供一种风轮,包括轮盖1、轮盘2和若干叶片3，轮盖1的中心设有进风口10，若干叶片3的上下两端分别与轮盖1和轮盘2连接，相邻叶片3间形成风道30，轮盖1的边缘与风道出口301交界处形成轮盖出口型线11，轮盘2的边缘与风道出口301交界处形成轮盘出口型线21，其特征在于：从单个风道的俯视图来看轮盖出口型线11和轮盘出口型线21，构成轮盖出口型线11和/或轮盘出口型线21上的各点与风轮轴线Z的径向距离不相等，它结构简单，开模容易，制作成本低，还能有效提高整机的排风量，降低噪音。单个风道的俯视图是如图7所示的状态，中心O是风轮轴线Z上的一 点。轮盖出口型线11和/或轮盘出口型线21分成第一段弧线L1和第二段弧线L2，中心O与第一段弧线L1上任意取一点A的连线OA，或者中心O与第二段弧线L2上任意取一点D的连线OD，其与风轮轴线Z的径向距离OA或者OD是不等的。
上述的若干轮盖出口型线11和/或轮盘出口型线21在周向是绕轴线Z呈周期性均布的，结构简单，制造容易。
上述从整个叶轮风道剖开后的俯视来看,叶片3外缘与轮盖出口型线11或者轮盘出口型线21相交点为S1，S1与中心O的连线OS1的长度是不变的，且点S1为相邻两段轮盖出口型线11或者相邻两段轮盘出口型线21的拐点，结构简单，能有效提高整机的排风量，降低噪音。
上述的轮盖出口型线11和/或轮盘出口型线21分成第一段弧线L1和第二段弧线L2，在第一段弧线L1上任意取一点A，与风轮转向相反作该点A与第一段弧线L1相切的切线AC，与风轮转向相同作该点A的径向切线AB，A点处的切线AC沿逆时针旋转至径向切线AB所走过的角度为θ1，其中径向切线AB是指垂直于中心O与点A的连线OA的直线；在第二段弧线L2上任意取一点D，与风轮转向相反作该点D与第二段弧线L2相切的切线DE，与风轮转向相同作该点径向切线DF，D点处的切线DE沿逆时针旋转至径向切线DF所走过的角度为θ2，径向切线DF是指垂直于中心O与点D的连线OD的直线，其中θ1大于180度角，θ2小于180度角。这样的设计，可以大幅降低噪音，提高排风量。
上述所述的θ1满足：200度＞θ1＞180度；所述的θ2满足：角度160度＜θ2＜180度。范围取值合理，有限保证降低噪音，提高排风量。
上述的轮盖出口型线11与轮盘出口型线21上下一致或不一致，当轮盖出口型线11与轮盘出口型线21上下一致时，制造更容易。当轮盖出口型线11与轮盘出口型线21上下不一致，可以对噪音和排风量作适当调节。
上述所述的叶片3为翼型叶片或者等厚度叶片，结构简单，制造容易。
上述所述的叶片3的尾缘设有尖角31，结构简单。
如图8所示，上述的的第一段弧线L1的起点为S1，终点为S2，第二段弧线L2的起点为S2，终点为S3，其中OS1至OS3的夹角是δ,OS1至OS2的夹角θ3是小于δ/2，结构简单，制造容易，布局合理。
实施例二：
一种风机，包括蜗壳、电机和风轮，其特征在于：所述风轮为实施例一所述的一种风轮，风轮是后倾叶轮或者是前倾叶轮。它既保持结构简单，开模容易，制作成本低，更能有效提高整机的排风量，降低噪音。
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，其他任何未背离本发明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，都包含在本发明的保护范围之内。

Claims (10)

  1. 一种风轮,包括轮盖(1)、轮盘(2)和若干叶片(3)，轮盖(1)的中心设有进风口(10)，若干叶片(3)的上下两端分别与轮盖(1)和轮盘(2)连接，相邻叶片(3)间形成风道(30)，轮盖(1)的边缘与风道出口(301)交界处形成轮盖出口型线(11)，轮盘(2)的边缘与风道出口(301)交界处形成轮盘出口型线(21)，其特征在于：从单个风道的俯视图来看轮盖出口型线(11)和轮盘出口型线(21)，构成轮盖出口型线(11)和/或轮盘出口型线(21)上的各点与风轮轴线Z的径向距离不相等。
  2. 根据权利要求1所述的一种风轮，其特征在于：若干轮盖出口型线(11)和/或轮盘出口型线(21)在周向是绕轴线Z呈周期性均布的。
  3. 根据权利要求2所述的一种风轮，其特征在于：从整个叶轮风道剖开后的俯视来看,叶片(3)外缘与轮盖出口型线(11)或者轮盘出口型线(21)相交点为S1，S1与中心O的连线OS1的长度是不变的，且点S1为相邻两段轮盖出口型线(11)或者相邻两段轮盘出口型线(21)的拐点。
  4. 根据权利要求1或2或3所述的一种风轮，其特征在于：轮盖出口型线(11)和/或轮盘出口型线(21)分成第一段弧线L1和第二段弧线L2，在第一段弧线L1上任意取一点A，与风轮转向相反作该点A与第一段弧线L1相切的切线AC，与风轮转向相同作该点A的径向切线AB，A点处的切线AC沿逆时针旋转至径向切线AB所走过的角度为θ1，其中径向切线AB是指垂直于中心O与点A的连线OA的直线；在第二段弧线L2上任意取一点D，与风轮转向相反作该点D与第二段弧线L2相切的切线DE，与风轮转向相同作该点径向切线DF，D点处的切线DE沿逆时针旋转至径向切线DF所走过的角度为θ2，径向切线DF是指垂直于中心O与点D的连线OD的直线，其中θ1大于180度角，θ2小于180度角。
  5. 根据权利要求4所述的一种风轮，其特征在于：所述θ1满足：200度＞θ1＞180度；所述θ2满足：角度160度＜θ2＜180度。
  6. 根据权利要求4所述的一种风轮，其特征在于：轮盖出口型线(11)与轮盘出口型线(21)上下一致或不一致。
  7. 根据权利要求4所述的一种风轮，其特征在于：所述的叶片(3)为翼型叶片或者等厚度叶片。
  8. 根据权利要求4所述的一种风轮，其特征在于：所述的叶片(3)的尾缘设有尖角(31)。
  9. 根据权利要求4所述的一种风轮，其特征在于：从俯视图来看第一段弧线L1的起点为S1，终点为S2，第二段弧线L2的起点为S2，终点为S3，其中OS1至OS3的夹角是δ,OS1至OS2的夹角θ3是小于δ/2。
  10. 一种风机，包括蜗壳、电机和风轮，其特征在于：所述风轮为权利要求1至权利要求9任意一项所述的一种风轮，风轮是后倾叶轮或者是前倾叶轮。
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WO2008099854A1 (ja) * 2007-02-13 2008-08-21 Daikin Industries, Ltd. 送風機の羽根車
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CN104675748A (zh) * 2015-01-27 2015-06-03 浙江理工大学 一种带槽道的低噪声无蜗壳离心通风机
EP3208470A1 (fr) * 2016-02-12 2017-08-23 Robert Bosch GmbH Procédé pour améliorer la qualité sonore d'une machine tournante déplaçant un fluide
CN110836193A (zh) * 2019-12-19 2020-02-25 湖南联诚轨道装备有限公司 一种非对称式离心叶轮风机
CN211397988U (zh) * 2019-12-19 2020-09-01 湖南联诚轨道装备有限公司 一种非对称式离心叶轮风机

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0684386A1 (de) * 1994-04-25 1995-11-29 Sulzer Pumpen Ag Verfahren und Vorrichtung zur Förderung eines Fluides
WO2008099854A1 (ja) * 2007-02-13 2008-08-21 Daikin Industries, Ltd. 送風機の羽根車
CN104564802A (zh) * 2015-01-06 2015-04-29 浙江理工大学 一种带有减阻槽的新型无蜗壳离心通风机
CN104675748A (zh) * 2015-01-27 2015-06-03 浙江理工大学 一种带槽道的低噪声无蜗壳离心通风机
EP3208470A1 (fr) * 2016-02-12 2017-08-23 Robert Bosch GmbH Procédé pour améliorer la qualité sonore d'une machine tournante déplaçant un fluide
CN110836193A (zh) * 2019-12-19 2020-02-25 湖南联诚轨道装备有限公司 一种非对称式离心叶轮风机
CN211397988U (zh) * 2019-12-19 2020-09-01 湖南联诚轨道装备有限公司 一种非对称式离心叶轮风机

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