WO2010066140A1 - 一种轴流风扇及离心风扇的风叶 - Google Patents

一种轴流风扇及离心风扇的风叶 Download PDF

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Publication number
WO2010066140A1
WO2010066140A1 PCT/CN2009/073373 CN2009073373W WO2010066140A1 WO 2010066140 A1 WO2010066140 A1 WO 2010066140A1 CN 2009073373 W CN2009073373 W CN 2009073373W WO 2010066140 A1 WO2010066140 A1 WO 2010066140A1
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Prior art keywords
blade
hole
fan
pressure balance
pressure
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Ceased
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PCT/CN2009/073373
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English (en)
French (fr)
Inventor
张达
陈宇奇
梁三增
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Zhongshan Broad Ocean Motor Co Ltd
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Zhongshan Broad Ocean Motor Co Ltd
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Priority claimed from CNA2008101870340A external-priority patent/CN101440822A/zh
Application filed by Zhongshan Broad Ocean Motor Co Ltd filed Critical Zhongshan Broad Ocean Motor Co Ltd
Publication of WO2010066140A1 publication Critical patent/WO2010066140A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F04D29/28—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
    • F04D29/26—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
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/388—Blades characterised by construction
    • 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • 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
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
    • 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
    • F05D2240/304—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 trailing edge of a rotor blade

Definitions

  • the present invention mainly relates to a fan blade, in particular, a fan blade of an axial fan and a fan blade of a centrifugal fan.
  • the blade of the conventional axial fan has a leading edge portion 1 in the air inflow direction and a trailing edge portion 2 in the air outflow direction.
  • the leading edge portion 1 will flow in.
  • the air is pushed forward, and the design of the trailing edge portion 2 facilitates the outflow of air.
  • the wind vane rotates, and the air flow is affected by the increase of the rotational kinetic energy at the trailing edge of the vane, resulting in the airflow in the process of flowing out of the trailing edge portion 2
  • the separation of the boundary layer airflow brings about a reflow phenomenon, and it is easy to deposit a large amount of dust 4 on the trailing edge portion 2 of the windward surface 3.
  • the windward side of the blade 2 refers to the same side as the direction of the wind.
  • an object of the present invention is to provide a fan blade for an axial flow fan, which can reduce the pressure difference between the front and the back of the blade, and eliminate the backflow caused by the separation of the boundary layer at the trailing edge.
  • the blade of an axial fan of the present invention is completed by the following technical solution: a blade of an axial flow fan, including a front edge portion in the air inflow direction and a rear edge portion in the air outflow direction, There are several pressure balance holes on the trailing edge.
  • the advantages of the present invention are: designing a plurality of pressure balance holes at the trailing edge of the blade to play the role of self-balancing pressure, reducing the pressure difference between the front and the back of the blade, and eliminating the trailing edge portion.
  • the reflow phenomenon caused by the separation of the boundary layer airflow increases the effective functional area of the blade, thereby potentially improving power consumption and noise quality, while avoiding the deposition of large amounts of dust.
  • the several pressure balance holes described above may be array distributed, evenly distributed, or randomly distributed.
  • the pressure balance hole described above has a pore size range of 0.1 mm to 100 mm.
  • the pressure balance hole may be a circular or non-circular through hole or a through hole.
  • the distribution of several pressure balance holes described above constitutes a hole net to adjust the pressure on both sides of the blade; the distribution, shape and size of the pressure balance hole are determined according to the size, shape, working environment and conditions of the blade.
  • Another object of the present invention is a fan blade for a centrifugal fan which can reduce the pressure difference between the front and the rear of the blade and eliminate the backflow caused by the separation of the boundary layer at the trailing edge.
  • the blade of a centrifugal fan of the present invention is completed by the following technical solution: a fan blade of a centrifugal fan, including a leading edge portion in the air inflow direction and a trailing edge portion in the air outflow direction, the trailing edge There are several pressure balance holes in the section.
  • the advantages of the present invention are: designing a plurality of pressure balance holes at the trailing edge of the blade to play the role of self-balancing pressure, reducing the pressure difference between the front and the back of the blade, and eliminating the trailing edge portion.
  • the reflow phenomenon caused by the separation of the boundary layer airflow increases the effective functional area of the blade, thereby potentially improving power consumption and noise quality, while avoiding the deposition of large amounts of dust.
  • the above several pressure balance holes may be array distributed, evenly distributed, or randomly distributed.
  • the pressure balance hole described above has a pore size range of 0.1 mm to 100 mm.
  • the pressure balance hole may be a circular or non-circular through hole or a through hole.
  • Figure 1 is a schematic view of the structure of a conventional axial fan
  • FIG. 2 is a schematic structural view of an axial fan blade of the present invention
  • Figure 3 is a schematic view showing the application of the axial flow fan of the present invention.
  • FIG. 4 is a schematic structural view of a centrifugal fan of the present invention.
  • FIG. 5 is a schematic view showing the structure of the centrifugal fan blade of the present invention.
  • Embodiment 1 As shown in FIG. 2 and FIG. 3, the axial fan blade of the present invention includes a front edge portion 1 in an air inflow direction and a rear edge portion 2 in an air outflow direction, and a plurality of rear edge portions 2 are opened. Pressure balance hole 3
  • the plurality of pressure balance holes 3 may be round holes, non-round holes, straight through holes or oblique through holes. Several pressure balances The distribution of the holes 3 constitutes a network of holes that regulate the pressure on both sides of the blade. Aperture range of pressure balance hole 3: 0.1mm - lOOmmo
  • Embodiment 2 As shown in FIG. 4 and FIG. 5, the centrifugal fan blade of the present invention includes a front edge portion 1 in an air inflow direction and a rear edge portion 2 in an air outflow direction, and a plurality of rear edge portions 2 are opened. Pressure balance hole 3
  • the plurality of pressure balance holes 3 may be round holes, non-round holes, straight through holes or oblique through holes.
  • the distribution of several pressure equalization holes 3 constitutes a network of holes to regulate the pressure on both sides of the blade.

Landscapes

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

Description

说明书 一翻流遍 、 M鍾 M卩十
■ 扁或
[1] 本发明主要涉及一种风扇的风叶， 尤其是轴流风扇的风叶及离心风扇的风叶。
[2] 如图 1所示， 现有的轴流风扇的风叶， 空气流入方向的前缘部 1和空气流出方向 的后缘部 2， 在风叶转动吋， 前缘部 1将流入的空气往前推， 后缘部 2的设计利于 空气流出， 经过实验证明： 风叶转动吋， 空气气流在风叶后缘因旋转动能增强 的影响， 导致空气气流在流出后缘部 2过程中， 边界层气流分离带来回流现象， 容易在迎风面 3的后缘部 2沉积大量灰尘 4， 实验中从计算机上的冷却轴流风扇看 ， 我们可以很容易发现上述描述的状况。 风叶的迎风面 2是指与出风方向相同的 一面。
[3] 另外， 离心风扇的风叶同样存在上述的技术问题。
[4] 为了克服现有技术的不足， 本发明的一个目的是提供一种轴流风扇的风叶， 可 减少风叶前后面的压差， 消除后缘部边界层气流分离带来的回流现象。
[5] 本发明的一种轴流风扇的风叶是通过以下的技术方案来完成的： 一种轴流风扇 的风叶， 包括空气流入方向的前缘部和空气流出方向的后缘部， 后缘部上开有 若干个压力平衡孔。
[6] 与现有技术相比， 本发明的优点有： 在风叶后缘部设计若干个压力平衡孔， 起 到自平衡压力的作用， 减少风叶前后面的压差， 消除后缘部边界层气流分离带 来的回流现象， 增加扇叶的有效功能面积， 从而潜在改善功率消耗和噪音品质 ， 同吋避免沉积大量灰尘。
[7] 上述所述的若干个压力平衡孔可以是阵列分布、 均匀分布， 也可以是随机分布
[8] 上述所述的压力平衡孔的孔径范围： 0.1mm- 100mm。
[9] 所述压力平衡孔可以是圆形或非圆形的直通孔或斜通孔。 [10] 上述所述的若干个压力平衡孔的分布构成一张孔网， 调节风叶两面压力； 压力 平衡孔的分布、 形状及大小根据风叶的大小、 形状、 工作环境及条件而定。
[11] 本发明的另一个目的是一种离心风扇的风叶， 可减少风叶前后面的压差， 消除 后缘部边界层气流分离带来的回流现象。
[12] 本发明的一种离心风扇的风叶是通过以下的技术方案来完成的： 一种离心风扇 的风叶， 包括空气流入方向的前缘部和空气流出方向的后缘部， 后缘部上开有 若干个压力平衡孔。
[13] 与现有技术相比， 本发明的优点有： 在风叶后缘部设计若干个压力平衡孔， 起 到自平衡压力的作用， 减少风叶前后面的压差， 消除后缘部边界层气流分离带 来的回流现象， 增加扇叶的有效功能面积， 从而潜在改善功率消耗和噪音品质 ， 同吋避免沉积大量灰尘。
[14] 上述所述的若干个压力平衡孔可以是阵列分布、 均匀分布， 也可以是随机分布
[15] 上述所述的压力平衡孔的孔径范围： 0.1mm-100mm。
[16] 所述压力平衡孔可以是圆形或非圆形的直通孔或斜通孔。
[17] 上述所述的若干个压力平衡孔的分布构成一张孔网， 调节风叶两面压力； 压力 平衡孔的分布、 形状及大小根据风叶的大小、 形状、 工作环境及条件而定。 國删
[18] 下面结合附图对本发明作详细的说明：
[19] 图 1是传统轴流风扇的结构示意图
[20] 图 2是本发明轴流风扇风叶的结构示意图；
[21] 图 3是本发明轴流风扇的应用示意图；
[22] 图 4是本发明离心风扇的结构示意图；
[23] 图 5是本发明离心风扇风叶的结构示意图。
[24] 实施例 1 : 如图 2、 图 3所示， 本发明轴流风扇风叶包括空气流入方向的前缘部 1 和空气流出方向的后缘部 2， 后缘部 2上开有若干个压力平衡孔 3
。 若干个压力平衡孔 3可以是圆孔、 非圆孔、 直通孔或斜通孔。 若干个压力平衡 孔 3的分布构成一张孔网， 调节风叶两面压力。 压力平衡孔 3的孔径范围： 0.1mm - lOOmmo
[25] 经过实验证明： 在后缘部 2上开有若干个压力平衡孔 3， 起到自平衡压力作用， 减少风叶前后面的压差， 消除迎风面 4上的后缘部 2边界层气流分离带来的回流 现象， 增加扇叶的有效功能面积， 从而潜在改善功率消耗和噪音品质， 同吋避 免沉积大量灰尘， 清洁卫生。
[26] 实施例 2: 如图 4、 图 5所示， 本发明离心风扇风叶包括空气流入方向的前缘部 1 和空气流出方向的后缘部 2， 后缘部 2上开有若干个压力平衡孔 3
。 若干个压力平衡孔 3可以是圆孔、 非圆孔、 直通孔或斜通孔者。 若干个压力平 衡孔 3的分布构成一张孔网， 调节风叶两面压力。 压力平衡孔 3的孔径范围： 0.1
[27] 经过实验证明： 在后缘部 2上开有若干个压力平衡孔 3， 起到自平衡压力作用， 减少风叶前后面的压差， 消除迎风面 4上的后缘部 2边界层气流分离带来的回流 现象， 增加扇叶的有效功能面积， 从而潜在改善功率消耗和噪音品质， 同吋避 免沉积大量灰尘， 清洁卫生。

Claims

权利要求书
[1] 一种轴流风扇的风叶， 包括空气流入方向的前缘部 （1) 和空气流出方向的 后缘部 （2) ， 其特征在于： 后缘部 （2) 上开有若干个压力平衡孔 （3)
[2] 根据权利要求 1所述的一种轴流风扇的风叶， 其特征在于： 若干个压力平衡 孔 (3) 的分布按阵列分布、 均匀分布或随机分布。
[3] 根据权利要求 1或 2所述的一种轴流风扇的风叶， 其特征在于： 所述压力平 衡孔 （3) 为直通孔或斜通孔。
[4] 根据权利要求 3所述的一种轴流风扇的风叶， 其特征在于： 若干个压力平衡 孔 (3) 的分布构成一张孔网， 调节风叶两面压力。
[5] 根据权利要求 3所述的一种轴流风扇的风叶， 其特征在于： 压力平衡孔 （3
) 的孔径范围： O.lmm-lOOmm; 压力平衡孔 （3) 为圆孔或非圆孔。
[6] 一种离心风扇的风叶， 包括空气流入方向的前缘部 （1) 和空气流出方向的 后缘部 （2) ， 其特征在于： 后缘部 （2) 上开有若干个压力平衡孔 （3)
[7] 根据权利要求 6所述的一种离心风扇的风叶， 其特征在于： 若干个压力平衡 孔 (3) 的分布按阵列分布、 均匀分布或随机分布。
[8] 根据权利要求 6或 7所述的一种离心风扇的风叶， 其特征在于： 所述压力平 衡孔 （3) 为直通孔或斜通孔。
[9] 根据权利要求 8所述的一种离心风扇的风叶， 其特征在于： 若干个压力平衡 孔 (3) 的分布构成一张孔网， 调节风叶两面压力。
[10] 根据权利要求 8所述的一种离心风扇的风叶， 其特征在于： 压力平衡孔 （3
) 的孔径范围： O.lmm-lOOmm; 压力平衡孔 （3) 为圆孔或非圆孔。
PCT/CN2009/073373 2008-12-11 2009-08-20 一种轴流风扇及离心风扇的风叶 Ceased WO2010066140A1 (zh)

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CN200810187034.0 2008-12-11
CNA2008101870340A CN101440822A (zh) 2008-11-28 2008-12-11 一种轴流风扇及离心风扇的风叶

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CA (1) CA2687806A1 (zh)
DE (1) DE102009044824A1 (zh)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9440888B2 (en) 2011-11-30 2016-09-13 Herakles Method of fabricating a part out of CMC material
CN106593950A (zh) * 2017-01-20 2017-04-26 美的集团股份有限公司 叶片、离心风机叶轮、离心风机和吸油烟机
CN106930977A (zh) * 2017-03-17 2017-07-07 中国大唐集团科技工程有限公司 一种直冷降噪轴流风机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2507307B (en) * 2012-10-25 2020-04-29 Anglia Ruskin Univ Impeller
EP4034770A1 (de) 2020-03-10 2022-08-03 ebm-papst Mulfingen GmbH & Co. KG Ventilator und ventilatorflügel
EP4283135A1 (de) 2022-05-24 2023-11-29 ebm-papst Mulfingen GmbH & Co. KG Nachleiteinrichtung sowie ventilator mit nachleiteinrichtung
DE102022113141A1 (de) 2022-05-24 2023-11-30 Ebm-Papst Mulfingen Gmbh & Co. Kg Nachleiteinrichtung sowie Ventilator mit Nachleiteinrichtung
DE102022113142A1 (de) 2022-05-24 2023-11-30 Ebm-Papst Mulfingen Gmbh & Co. Kg Nachleiteinrichtung sowie Ventilator mit Nachleiteinrichtung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214753A1 (de) * 1992-05-04 1993-11-11 Asea Brown Boveri Radialverdichter-Laufrad
JPH1037895A (ja) * 1996-07-25 1998-02-13 Hitachi Ltd 空調用送風ファン
JPH1061594A (ja) * 1996-08-14 1998-03-03 Nishiei Tekkosho:Kk インペラとポンプの構造
JPH11280696A (ja) * 1998-03-27 1999-10-15 Sanyo Electric Co Ltd 軸流送風機
FR2851857A1 (fr) * 2003-02-27 2004-09-03 Valeo Equip Electr Moteur Dispositif de ventilation perfectionne pour machine electrique tournante
JP2007303714A (ja) * 2006-05-10 2007-11-22 Matsushita Electric Ind Co Ltd 空気調和機の送風機
CN201037475Y (zh) * 2007-05-08 2008-03-19 金家宝工业有限公司 风扇叶片结构
CN201236843Y (zh) * 2008-04-28 2009-05-13 上海陈立实业有限公司 轴流风扇叶片的面结构
CN101440822A (zh) * 2008-11-28 2009-05-27 中山大洋电机股份有限公司 一种轴流风扇及离心风扇的风叶

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2128787C1 (ru) * 1993-11-19 1999-04-10 Вейнберг Вениамин Яковлевич Вентиляторное устройство
US6994522B1 (en) * 2002-07-17 2006-02-07 Chang Chin-Chih Fan blade
US20040187691A1 (en) * 2002-08-30 2004-09-30 Tai-Ching Lee Fan blade
JP2006249985A (ja) * 2005-03-09 2006-09-21 Shin Kagaku Kaihatsu Kenkyusho:Kk 回転推進翼
CN201043531Y (zh) * 2007-04-27 2008-04-02 上海水产大学 一种新型冻结装置用风机

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4214753A1 (de) * 1992-05-04 1993-11-11 Asea Brown Boveri Radialverdichter-Laufrad
JPH1037895A (ja) * 1996-07-25 1998-02-13 Hitachi Ltd 空調用送風ファン
JPH1061594A (ja) * 1996-08-14 1998-03-03 Nishiei Tekkosho:Kk インペラとポンプの構造
JPH11280696A (ja) * 1998-03-27 1999-10-15 Sanyo Electric Co Ltd 軸流送風機
FR2851857A1 (fr) * 2003-02-27 2004-09-03 Valeo Equip Electr Moteur Dispositif de ventilation perfectionne pour machine electrique tournante
JP2007303714A (ja) * 2006-05-10 2007-11-22 Matsushita Electric Ind Co Ltd 空気調和機の送風機
CN201037475Y (zh) * 2007-05-08 2008-03-19 金家宝工业有限公司 风扇叶片结构
CN201236843Y (zh) * 2008-04-28 2009-05-13 上海陈立实业有限公司 轴流风扇叶片的面结构
CN101440822A (zh) * 2008-11-28 2009-05-27 中山大洋电机股份有限公司 一种轴流风扇及离心风扇的风叶

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9440888B2 (en) 2011-11-30 2016-09-13 Herakles Method of fabricating a part out of CMC material
CN106593950A (zh) * 2017-01-20 2017-04-26 美的集团股份有限公司 叶片、离心风机叶轮、离心风机和吸油烟机
CN106930977A (zh) * 2017-03-17 2017-07-07 中国大唐集团科技工程有限公司 一种直冷降噪轴流风机

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