WO2010066140A1 - A fan blade of an axial fan or a centrifugal fan - Google Patents
A fan blade of an axial fan or a centrifugal fan Download PDFInfo
- 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
- Prior art date
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- 238000000926 separation method Methods 0.000 abstract description 8
- 239000000428 dust Substances 0.000 abstract description 6
- 238000000151 deposition Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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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
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
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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
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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
- F04D29/38—Blades
- F04D29/388—Blades characterised by construction
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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
- F04D29/66—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
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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
- F04D29/66—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
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- 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)
Abstract
A fan blade of an axial fan or a centrifugal fan comprises a front edge part (1) in an air inflow direction and a back edge part (2) in an air outflow direction, and is characterized in that the back edge part (2) is provided with a plurality of pressure balancing holes (3). Because the back edge part of the fan blade is provided with the plurality of the pressure balancing holes, the fan blade reduces pressure difference between the front and the back of the fan blade, eliminates backflow phenomenon caused by air current separation at a boundary layer of the back edge part, and increases effective functional area of the fan blade, so as to potentially improve power consumption and noise quality, and avoid depositing large amount of dust at the same time.
Description
说明书 一翻流遍 、 M鍾 M卩十 Instructions, a flow over, M clock, M卩10
■ 扁或 ■ flat or
[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。 [1] 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.
[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。 [2] As shown in Fig. 1, 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. When the blade rotates, 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. It has been experimentally proved that: 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. In the experiment, it can be easily found from the cooling axial fan on the computer. The windward side of the blade 2 refers to the same side as the direction of the wind.
[3] 另外, 离心风扇的风叶同样存在上述的技术问题。 [3] In addition, the blades of the centrifugal fan also have the above technical problems.
[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。 [4] In order to overcome the deficiencies of the prior art, 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. .
[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。 [5] 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.
[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。 [6] Compared with the prior art, 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.
[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 [7] The several pressure balance holes described above may be array distributed, evenly distributed, or randomly distributed.
[8] 上述所述的压力平衡孔的孔径范围: 0.1mm- 100mm。 [8] The pressure balance hole described above has a pore size range of 0.1 mm to 100 mm.
[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。 [9] The pressure balance hole may be a circular or non-circular through hole or a through hole. [10] 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.
[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。 [11] 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.
[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。 [12] 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.
[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。 [13] Compared with the prior art, 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.
[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 [14] The above several pressure balance holes may be array distributed, evenly distributed, or randomly distributed.
[15] 上述所述的压力平衡孔的孔径范围: 0.1mm-100mm。 [15] The pressure balance hole described above has a pore size range of 0.1 mm to 100 mm.
[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。 [16] The pressure balance hole may be a circular or non-circular through hole or a through hole.
[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 [17] 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 depend on the size, shape, working environment and conditions of the blade. Country deletion
[18] 下面结合附图对本发明作详细的说明: [18] The present invention will be described in detail below with reference to the accompanying drawings:
[19] 图 1是传统轴流风扇的结构示意图 [19] Figure 1 is a schematic view of the structure of a conventional axial fan
[20] 图 2是本发明轴流风扇风叶的结构示意图; 2 is a schematic structural view of an axial fan blade of the present invention;
[21] 图 3是本发明轴流风扇的应用示意图; Figure 3 is a schematic view showing the application of the axial flow fan of the present invention;
[22] 图 4是本发明离心风扇的结构示意图; [22] FIG. 4 is a schematic structural view of a centrifugal fan of the present invention;
[23] 图 5是本发明离心风扇风叶的结构示意图。 Figure 5 is a schematic view showing the structure of the centrifugal fan blade of the present invention.
[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 [24] 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
。 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 . 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
[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。 [25] It has been proved by experiments that there are several pressure balance holes 3 on the trailing edge part 2, which play the role of self-balancing pressure, reduce the pressure difference between the front and the back of the wind blade, and eliminate the boundary layer of the trailing edge part 2 on the windward side 4. The recirculation phenomenon caused by air separation 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 and sanitation.
[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 [26] 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
。 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 . 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. Pressure balance hole 3 aperture range: 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。
[27] It has been proved by experiments that there are several pressure balance holes 3 on the trailing edge part 2, which play the role of self-balancing pressure, reduce the pressure difference between the front and the back of the wind blade, and eliminate the boundary layer of the trailing edge part 2 on the windward side 4. The recirculation phenomenon caused by air separation 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 and sanitation.
Claims
[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) [1] A fan blade of an axial flow fan, comprising a front edge portion (1) in an air inflow direction and a rear edge portion (2) in an air outflow direction, characterized in that: a plurality of rear edge portions (2) are opened Pressure balance hole (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。 [2] The blade of an axial flow fan according to claim 1, characterized in that the distribution of the plurality of pressure balance holes (3) is distributed, uniformly distributed or randomly distributed in an array.
[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。 [3] The blade of an axial flow fan according to claim 1 or 2, wherein the pressure equalization hole (3) is a through hole or an oblique through hole.
[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。 [4] The blade of an axial flow fan according to claim 3, characterized in that: the distribution of the plurality of pressure balance holes (3) constitutes a hole net, and the pressure on both sides of the blade is adjusted.
[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 [5] The blade of an axial fan according to claim 3, wherein: the pressure balance hole (3)
) 的孔径范围: O.lmm-lOOmm; 压力平衡孔 (3) 为圆孔或非圆孔。 The aperture range is: O.lmm-lOOmm; The pressure balance hole (3) is a round hole or a non-round hole.
[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) [6] A fan blade of a centrifugal fan, comprising a leading edge portion (1) in an air inflow direction and a trailing edge portion (2) in an air outflow direction, characterized in that: a plurality of pressures are formed on the trailing edge portion (2) Balance hole (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。 [7] A blade of a centrifugal fan according to claim 6, characterized in that the distribution of the plurality of pressure equalization holes (3) is distributed, uniformly distributed or randomly distributed in an array.
[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。 [8] A fan blade for a centrifugal fan according to claim 6 or 7, wherein: said pressure equalization hole (3) is a through hole or an oblique through hole.
[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。 [9] A fan blade for a centrifugal fan according to claim 8, wherein: the distribution of the plurality of pressure balance holes (3) constitutes a mesh network for adjusting the pressure on both sides of the blade.
[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 [10] The blade of a centrifugal fan according to claim 8, wherein: the pressure balance hole (3)
) 的孔径范围: O.lmm-lOOmm; 压力平衡孔 (3) 为圆孔或非圆孔。
The aperture range is: O.lmm-lOOmm; The pressure balance hole (3) is a round hole or a non-round hole.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200810187034.0 | 2008-12-11 | ||
CNA2008101870340A CN101440822A (en) | 2008-11-28 | 2008-12-11 | Axial-flow fan and fan blade of centrifugal fan |
Publications (1)
Publication Number | Publication Date |
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WO2010066140A1 true WO2010066140A1 (en) | 2010-06-17 |
Family
ID=41667265
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2009/073373 WO2010066140A1 (en) | 2008-12-11 | 2009-08-20 | A fan blade of an axial fan or a centrifugal fan |
Country Status (5)
Country | Link |
---|---|
CA (1) | CA2687806A1 (en) |
DE (1) | DE102009044824A1 (en) |
FR (1) | FR2939851A1 (en) |
GB (1) | GB2466125A (en) |
WO (1) | WO2010066140A1 (en) |
Cited By (3)
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---|---|---|---|---|
US9440888B2 (en) | 2011-11-30 | 2016-09-13 | Herakles | Method of fabricating a part out of CMC material |
CN106593950A (en) * | 2017-01-20 | 2017-04-26 | 美的集团股份有限公司 | Blade, centrifugal fan impeller, centrifugal fan and extractor hood |
CN106930977A (en) * | 2017-03-17 | 2017-07-07 | 中国大唐集团科技工程有限公司 | A kind of direct-cooled noise reduction axial flow blower |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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GB2507307B (en) * | 2012-10-25 | 2020-04-29 | Anglia Ruskin Univ | Impeller |
CN115190945A (en) | 2020-03-10 | 2022-10-14 | 依必安派特穆尔芬根有限两合公司 | Fan and fan blade |
DE102022113142A1 (en) | 2022-05-24 | 2023-11-30 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Diverting device and fan with diverting device |
EP4283135A1 (en) | 2022-05-24 | 2023-11-29 | ebm-papst Mulfingen GmbH & Co. KG | Outlet flow guide device and fan with outlet flow guide device |
DE102022113141A1 (en) | 2022-05-24 | 2023-11-30 | Ebm-Papst Mulfingen Gmbh & Co. Kg | Diverting device and fan with diverting device |
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Also Published As
Publication number | Publication date |
---|---|
FR2939851A1 (en) | 2010-06-18 |
DE102009044824A1 (en) | 2010-06-17 |
GB2466125A (en) | 2010-06-16 |
CA2687806A1 (en) | 2010-06-11 |
GB0921650D0 (en) | 2010-01-27 |
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