WO2015039415A1 - Fan volute drainage structure - Google Patents

Fan volute drainage structure Download PDF

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Publication number
WO2015039415A1
WO2015039415A1 PCT/CN2014/072705 CN2014072705W WO2015039415A1 WO 2015039415 A1 WO2015039415 A1 WO 2015039415A1 CN 2014072705 W CN2014072705 W CN 2014072705W WO 2015039415 A1 WO2015039415 A1 WO 2015039415A1
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WO
WIPO (PCT)
Prior art keywords
volute
drainage structure
structure according
fan
inner cavity
Prior art date
Application number
PCT/CN2014/072705
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French (fr)
Chinese (zh)
Inventor
王雄程
雷威
Original Assignee
中山大洋电机制造有限公司
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Publication of WO2015039415A1 publication Critical patent/WO2015039415A1/en

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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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4226—Fan casings
    • 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
    • F05D2260/60—Fluid transfer
    • F05D2260/602—Drainage

Definitions

  • the utility model relates to a fan volute drainage structure.
  • the fan volute of the blower especially the fan volute used in the high-efficiency air-conditioning system
  • the high-efficiency air-conditioning system often works in the state of 90% or more efficiency, the higher the efficiency, the amount of liquid carried in the exhaust gas. Or the corresponding increase of moisture, the suction air of the air inlet of the fan volute is collected in the inner cavity of the volute of the fan. Because the internal temperature of the inner cavity is low, the inhaled gas will be cooled in the inner cavity to form condensed water. Accumulated condensate may cause a decrease in air performance in the blower and may even result in the extinguishing of the combustion system in a high efficiency air conditioning system.
  • the purpose of the utility model is to provide a fan volute drainage structure, which has a single cylinder, good drainage performance and high reliability.
  • the utility model relates to a fan volute drainage structure, which comprises a volute casing and a bottom cover.
  • the volute casing is provided with an internal cavity for installing the wind wheel, and the volute casing is provided with an air outlet communicating with the internal cavity, and the bottom cover is mounted on the volute
  • the top of the body blocks the opening at the top of the inner cavity, and the bottom wall of the inner cavity is provided with at least one drainage hole, the top of the drainage hole being wider and the bottom being narrower.
  • the drain hole described above is a counterbore, including a groove that sinks at the top and a pipe that is at the bottom.
  • the drain hole described above is a tapered hole that is large and small.
  • the pipe described above includes a water collecting port, a drain port and a flow guiding section between the water collecting port and the water draining port, and the water collecting port, the drain port and the guiding section have the same cross-sectional shape and size.
  • the periphery of the flow guiding section described above forms a tubular body extending beyond the outer surface of the volute.
  • the ribs are provided on the outside of the tubular body described above.
  • the groove described above is disposed at the edge of the bottom wall of the inner cavity, and the cross-sectional shape of the pipe is U-shaped.
  • the volute housing described above is also provided with a plurality of mounting feet.
  • volute described above is integrally injection molded.
  • the utility model has the following effects: 1) an inner cavity for installing a wind wheel is arranged inside the volute casing, and an air outlet is arranged on the volute casing to communicate with the inner cavity, and the bottom cover is mounted on the volute
  • the top of the body blocks the opening at the top of the inner cavity, and the bottom wall of the inner cavity is provided with at least one drainage hole, the top of the drainage hole is wider, the bottom is narrow, and the condensation water formed in the cavity of the volute passes through
  • the self-gravity flows into the drainage hole area, and the wider top of the drainage hole can reduce the influence of the airflow generated by the wind wheel on the pressure of the condensed water, thereby ensuring that the condensed water is discharged through the narrow portion of the bottom of the drainage hole, and the structure is single, Good drainage effect, high reliability and high efficiency
  • the outer part of the tubular body is provided with reinforcing ribs, which are single and solid
  • the groove is arranged at the edge of the bottom wall of the inner cavity,
  • the cross-sectional shape of the pipe is U-shaped, which is good for drainage; 4)
  • the volute is also provided with a plurality of mounting feet for easy installation;
  • the volute is integrally injection molded, and the structure is simple and easy to mass produce.
  • Figure 1 is a perspective view of the volute of the fan of the present invention.
  • FIG. 2 is a perspective view of the volute of the present invention.
  • Figure 3 is another perspective view of the volute of the present invention.
  • Figure 4 is a partial enlarged view of A-A of Figure 3.
  • Figure 5 is a plan view of the volute of the present invention.
  • Figure 6 is a cross-sectional view taken along line B-B of Figure 5;
  • Figure 7 is a partial enlarged view of the C-C of Figure 6.
  • Figure 8 is a schematic view showing the structure of the drain hole in the second embodiment.
  • Embodiment 1 As shown in FIG. 1 to FIG. 7 , the utility model relates to a fan volute drainage structure, which comprises a volute casing 1 and a bottom cover 2, and an internal cavity for installing a wind wheel is arranged inside the volute casing 1 11.
  • the volute casing 1 is provided with an air outlet 12 communicating with the internal cavity 11.
  • the bottom cover 2 is mounted on the top of the volute casing 1 and blocks an opening at the top of the internal cavity 11, and the bottom wall of the internal cavity 11 is opened. At least one drainage hole 13, the top of the drainage hole 13 is wider and the bottom is narrower.
  • the drain hole 13 is a counterbore including a recess 131 at the top and a duct 132 at the bottom.
  • the pipe 132 includes a water collecting port 1321, a drain port 1322, and a diversion section 1323 between the water collecting port 1321 and the drain port 1322.
  • the water collecting port 1321, the drain port 1322, and the diversion section 1323 have the same cross-sectional shape and size.
  • a tubular body 14 extending outside the volute is formed on the periphery of the flow guiding section 1323.
  • a rib 15 is provided on the outside of the tubular body 14.
  • the groove 131 is provided at the edge of the bottom wall of the inner cavity 11, and the cross-sectional shape of the pipe 132 is U-shaped.
  • a plurality of mounting feet 16 are also disposed on the volute housing 1.
  • the volute housing 1 is integrally injection molded.
  • the principle of the utility model is: at least one drainage hole 13 is defined in the bottom wall of the inner cavity 11 of the volute casing 1.
  • the drainage hole 13 is a counterbore, and includes a groove 131 at the top and a pipe 132 at the bottom.
  • the structure is simple, the drainage performance is good, and the reliability is high.
  • Embodiment 2 As shown in FIG. 1 , FIG. 3 and FIG. 8 , the utility model relates to a fan volute drainage structure, comprising a volute casing 1 and a bottom cover 2 , wherein the volute casing 1 is provided with a wind wheel for mounting The inner cavity 11, the volute 1 is provided with a tuyere 12 communicating with the inner cavity 11, and the bottom cover 2 is mounted on the top of the volute 1 and obscuring the opening at the top of the inner cavity 11, the bottom wall of the inner cavity 11. At least one drain hole is provided
  • the drain hole 13 has a wide top and a narrow bottom.
  • the drain hole 13 is a tapered hole that is large and small.
  • a plurality of mounting feet 16 are also disposed on the volute housing 1.
  • the volute housing 1 is integrally injection molded.
  • the principle of the utility model is: at least one drainage is provided on the bottom wall of the inner cavity 11 of the volute casing 1
  • the hole 13 and the drain hole 13 are upper and lower tapered holes, and the structure has a single cylinder, good drainage performance and high reliability.

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

Abstract

Disclosed in the present utility model is a fan volute drainage structure comprising a volute body (1) and a bottom cover (2); the volute body (1) is provided with an internal cavity (11) therein for installing fan blades; the volute body (1) is provided with an air outlet (12) thereon communicating with the internal cavity (11); the bottom cover (2) is installed on the top of the volute body (1), and covers the opening of the internal cavity (11); at least one drain hole (13) is arranged in the bottom wall of the internal cavity (11); and the drain hole (13) has a wide top and a narrow bottom. The structure is simple and reliable, and has good drainage performance.

Description

一种风机蜗壳排水结构 技术领域：  Fan volute drainage structure Technical field:
本实用新型涉及一种风机蜗壳排水结构。  The utility model relates to a fan volute drainage structure.
背景技术： Background technique:
目前， 鼓风机用风机蜗壳， 尤其是应用在高效冷暖空调系统中的风机蜗壳， 高效冷暖空调系统往往工作在效率为 90%及以上的状态中， 效率越高， 排出气体 中携带的液体量或湿气相应增加， 风机蜗壳的进风口吸入气体汇集在风机蜗壳 的内部空腔里面， 因内部空腔内部温度较低， 吸入的气体就会在内部空腔内遇 冷形成冷凝水， 聚积的冷凝水可能导致鼓风机中空气性能的降低， 甚至可能导 致高效冷暖空调系统中的燃烧系统熄灭。  At present, the fan volute of the blower, especially the fan volute used in the high-efficiency air-conditioning system, the high-efficiency air-conditioning system often works in the state of 90% or more efficiency, the higher the efficiency, the amount of liquid carried in the exhaust gas. Or the corresponding increase of moisture, the suction air of the air inlet of the fan volute is collected in the inner cavity of the volute of the fan. Because the internal temperature of the inner cavity is low, the inhaled gas will be cooled in the inner cavity to form condensed water. Accumulated condensate may cause a decrease in air performance in the blower and may even result in the extinguishing of the combustion system in a high efficiency air conditioning system.
为了处理聚积的冷凝水， 人们往往在风机蜗壳上设置排水管， 排走聚积在 风机蜗壳内的冷凝水， 但是风机蜗壳里面的风轮转动产生的气流对聚积的冷凝 水形成的压力影响， 使冷凝水汽很难汇集在排水孔处， 排水效果不理想， 导致 鼓风机中空气性能的降低， 使用时间长， 甚至可能导致高效冷暖空调系统中的 燃烧系统熄灭。  In order to deal with the accumulated condensed water, people often set up a drain pipe on the volute of the fan to remove the condensed water accumulated in the volute of the fan, but the pressure generated by the rotation of the wind wheel inside the fan volute creates pressure on the accumulated condensed water. The effect is that it is difficult for the condensed water vapor to collect at the drainage hole, and the drainage effect is not ideal, resulting in a decrease in the air performance in the air blower, a long use time, and may even cause the combustion system in the high efficiency air conditioning system to be extinguished.
发明内容： Summary of the invention:
本实用新型的目的是提供一种风机蜗壳排水结构， 该结构筒单、 排水性能 好、 可靠性高。  The purpose of the utility model is to provide a fan volute drainage structure, which has a single cylinder, good drainage performance and high reliability.
本实用新型的目的是通过下述技术方案予以实现的。  The object of the present invention is achieved by the following technical solutions.
一种风机蜗壳排水结构， 包括蜗壳体和底盖， 蜗壳体里面设置有用于安装 风轮的内部空腔， 蜗壳体上设置出风口与内部空腔连通， 底盖安装在蜗壳体的 顶部并遮挡住内部空腔顶部的开口， 内部空腔的底壁上开设有至少一个排水孔， 排水孔的顶部较宽， 底部较窄。  The utility model relates to a fan volute drainage structure, which comprises a volute casing and a bottom cover. The volute casing is provided with an internal cavity for installing the wind wheel, and the volute casing is provided with an air outlet communicating with the internal cavity, and the bottom cover is mounted on the volute The top of the body blocks the opening at the top of the inner cavity, and the bottom wall of the inner cavity is provided with at least one drainage hole, the top of the drainage hole being wider and the bottom being narrower.
上述所述的排水孔是沉孔， 包括顶部下沉的凹槽和底部的管道。  The drain hole described above is a counterbore, including a groove that sinks at the top and a pipe that is at the bottom.
上述所述的排水孔是上大下小的锥孔。  The drain hole described above is a tapered hole that is large and small.
上述所述的管道包括集水口、 排水口和位于集水口和排水口之间的导流段， 集水口、 排水口和导流段三者的横截面形状和大小相同。 上述所述的导流段外围形成一延伸出蜗壳体外面的管状体。 The pipe described above includes a water collecting port, a drain port and a flow guiding section between the water collecting port and the water draining port, and the water collecting port, the drain port and the guiding section have the same cross-sectional shape and size. The periphery of the flow guiding section described above forms a tubular body extending beyond the outer surface of the volute.
上述所述的管状体的外部设置加强筋。  The ribs are provided on the outside of the tubular body described above.
上述所述的 槽设置在内部空腔底壁的边缘， 管道的横截面形状是 U形。 上述所述的蜗壳体上还设置有若干安装脚。  The groove described above is disposed at the edge of the bottom wall of the inner cavity, and the cross-sectional shape of the pipe is U-shaped. The volute housing described above is also provided with a plurality of mounting feet.
上述所述的蜗壳体是一体注塑成型的。  The volute described above is integrally injection molded.
本实用新型与现有技术相比， 具有如下效果： 1 )蜗壳体里面设置有用于安 装风轮的内部空腔， 蜗壳体上设置出风口与内部空腔连通， 底盖安装在蜗壳体 的顶部并遮挡住内部空腔顶部的开口， 内部空腔的底壁上开设有至少一个排水 孔， 排水孔的顶部较宽， 底部较窄， 在蜗壳体内部空腔形成的冷凝水通过自身 重力流入到排水孔区域里面， 排水孔的顶部较宽的地方可以减少风轮产生的气 流对冷凝水的压力影响， 从而保证冷凝水通过排水孔底部较窄的地方排出， 该 结构筒单、 排水效果好、 可靠性和工作效率高； 2 ) 管状体的外部设置加强筋， 该结构筒单、 坚实牢固； 3 ) 凹槽设置在内部空腔底壁的边缘， 冷凝水通过自身 重力就可流到排水孔的区域里面， 管道的横截面形状是 U形， 利于排水； 4 )蜗 壳体上还设置有若干安装脚， 安装方便； 5 )蜗壳体是一体注塑成型的， 结构筒 单、 便于批量生产。  Compared with the prior art, the utility model has the following effects: 1) an inner cavity for installing a wind wheel is arranged inside the volute casing, and an air outlet is arranged on the volute casing to communicate with the inner cavity, and the bottom cover is mounted on the volute The top of the body blocks the opening at the top of the inner cavity, and the bottom wall of the inner cavity is provided with at least one drainage hole, the top of the drainage hole is wider, the bottom is narrow, and the condensation water formed in the cavity of the volute passes through The self-gravity flows into the drainage hole area, and the wider top of the drainage hole can reduce the influence of the airflow generated by the wind wheel on the pressure of the condensed water, thereby ensuring that the condensed water is discharged through the narrow portion of the bottom of the drainage hole, and the structure is single, Good drainage effect, high reliability and high efficiency; 2) The outer part of the tubular body is provided with reinforcing ribs, which are single and solid; 3) The groove is arranged at the edge of the bottom wall of the inner cavity, and the condensed water can pass its own gravity. Flowing into the area of the drain hole, the cross-sectional shape of the pipe is U-shaped, which is good for drainage; 4) The volute is also provided with a plurality of mounting feet for easy installation; The volute is integrally injection molded, and the structure is simple and easy to mass produce.
附图说明： BRIEF DESCRIPTION OF THE DRAWINGS:
图 1 是本实用新型风机蜗壳的立体图。  Figure 1 is a perspective view of the volute of the fan of the present invention.
图 2 是本实用新型蜗壳体的一个立体图。  2 is a perspective view of the volute of the present invention.
图 3 是本实用新型蜗壳体的另一个立体图。  Figure 3 is another perspective view of the volute of the present invention.
图 4 是图 3的 A-A局部放大图。  Figure 4 is a partial enlarged view of A-A of Figure 3.
图 5 是本实用新型蜗壳体的俯视图。  Figure 5 is a plan view of the volute of the present invention.
图 6 是图 5的 B-B剖视图。  Figure 6 is a cross-sectional view taken along line B-B of Figure 5;
图 7 是图 6的 C-C局部放大图。  Figure 7 is a partial enlarged view of the C-C of Figure 6.
图 8 是实施例二中排水孔的结构示意图。  Figure 8 is a schematic view showing the structure of the drain hole in the second embodiment.
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。 detailed description: The present invention will be further described in detail below through the specific embodiments and the accompanying drawings.
实施例一： 如图 1至图 7所示， 本实用新型是一种风机蜗壳排水结构， 包 括蜗壳体 1和底盖 2, 蜗壳体 1里面设置有用于安装风轮的内部空腔 11, 蜗壳 体 1上设置出风口 12与内部空腔 11连通， 底盖 2安装在蜗壳体 1的顶部并遮 挡住内部空腔 11顶部的开口， 内部空腔 11的底壁上开设有至少一个排水孔 13, 排水孔 13的顶部较宽， 底部较窄。  Embodiment 1 As shown in FIG. 1 to FIG. 7 , the utility model relates to a fan volute drainage structure, which comprises a volute casing 1 and a bottom cover 2, and an internal cavity for installing a wind wheel is arranged inside the volute casing 1 11. The volute casing 1 is provided with an air outlet 12 communicating with the internal cavity 11. The bottom cover 2 is mounted on the top of the volute casing 1 and blocks an opening at the top of the internal cavity 11, and the bottom wall of the internal cavity 11 is opened. At least one drainage hole 13, the top of the drainage hole 13 is wider and the bottom is narrower.
排水孔 13是沉孔， 包括顶部下沉的凹槽 131和底部的管道 132。  The drain hole 13 is a counterbore including a recess 131 at the top and a duct 132 at the bottom.
管道 132包括集水口 1321、 排水口 1322和位于集水口 1321和排水口 1322 之间的导流段 1323, 集水口 1321、 排水口 1322和导流段 1323三者的横截面形 状和大小相同。  The pipe 132 includes a water collecting port 1321, a drain port 1322, and a diversion section 1323 between the water collecting port 1321 and the drain port 1322. The water collecting port 1321, the drain port 1322, and the diversion section 1323 have the same cross-sectional shape and size.
导流段 1323外围形成一延伸出蜗壳体外面的管状体 14。  A tubular body 14 extending outside the volute is formed on the periphery of the flow guiding section 1323.
管状体 14的外部设置加强筋 15。  A rib 15 is provided on the outside of the tubular body 14.
凹槽 131设置在内部空腔 11底壁的边缘， 管道 132的横截面形状是 U形。 蜗壳体 1上还设置有若干安装脚 16。  The groove 131 is provided at the edge of the bottom wall of the inner cavity 11, and the cross-sectional shape of the pipe 132 is U-shaped. A plurality of mounting feet 16 are also disposed on the volute housing 1.
蜗壳体 1是一体注塑成型的。  The volute housing 1 is integrally injection molded.
本实用新型的原理是： 蜗壳体 1的内部空腔 11的底壁上开设有至少一个排水 孔 13, 排水孔 13是沉孔， 包括顶部下沉的凹槽 131和底部的管道 132, 该结构筒 单、 排水性能好、 可靠性高。  The principle of the utility model is: at least one drainage hole 13 is defined in the bottom wall of the inner cavity 11 of the volute casing 1. The drainage hole 13 is a counterbore, and includes a groove 131 at the top and a pipe 132 at the bottom. The structure is simple, the drainage performance is good, and the reliability is high.
实施例二：如图 1、图 3和图 8所示，本实用新型是一种风机蜗壳排水结构， 包括蜗壳体 1和底盖 2, 蜗壳体 1里面设置有用于安装风轮的内部空腔 11, 蜗 壳体 1上设置出风口 12与内部空腔 11连通， 底盖 2安装在蜗壳体 1的顶部并 遮挡住内部空腔 11顶部的开口， 内部空腔 11的底壁上开设有至少一个排水孔 Embodiment 2: As shown in FIG. 1 , FIG. 3 and FIG. 8 , the utility model relates to a fan volute drainage structure, comprising a volute casing 1 and a bottom cover 2 , wherein the volute casing 1 is provided with a wind wheel for mounting The inner cavity 11, the volute 1 is provided with a tuyere 12 communicating with the inner cavity 11, and the bottom cover 2 is mounted on the top of the volute 1 and obscuring the opening at the top of the inner cavity 11, the bottom wall of the inner cavity 11. At least one drain hole is provided
13, 排水孔 13的顶部较宽， 底部较窄。 13. The drain hole 13 has a wide top and a narrow bottom.
排水孔 13是上大下小的锥孔。  The drain hole 13 is a tapered hole that is large and small.
蜗壳体 1上还设置有若干安装脚 16。  A plurality of mounting feet 16 are also disposed on the volute housing 1.
蜗壳体 1是一体注塑成型的。  The volute housing 1 is integrally injection molded.
本实用新型的原理是： 蜗壳体 1的内部空腔 11的底壁上开设有至少一个排水 孔 13, 排水孔 13是上大下小的锥孔， 该结构筒单、 排水性能好、 可靠性高, The principle of the utility model is: at least one drainage is provided on the bottom wall of the inner cavity 11 of the volute casing 1 The hole 13 and the drain hole 13 are upper and lower tapered holes, and the structure has a single cylinder, good drainage performance and high reliability.

Claims

权利要求 Rights request
1、 一种风机蜗壳排水结构， 包括蜗壳体（ 1 )和底盖（ 2 ), 蜗壳体（ 1 )里 面设置有用于安装风轮的内部空腔（11 ), 蜗壳体（1 )上设置出风口 （12 )与 内部空腔（11 )连通， 底盖（2 )安装在蜗壳体（1 ) 的顶部并遮挡住内部空腔 1. A fan volute drainage structure comprising a volute (1) and a bottom cover (2), wherein the volute (1) is provided with an internal cavity (11) for mounting the wind wheel, the volute (1) The upper air outlet (12) is connected to the inner cavity (11), and the bottom cover (2) is mounted on the top of the volute (1) to block the inner cavity
( 11 )顶部的开口， 其特征在于： 内部空腔（ 11 ) 的底壁上开设有至少一个排 水孔（13), 排水孔（13) 的顶部较宽， 底部较窄。 (11) The opening at the top is characterized in that: at least one drain hole (13) is opened in the bottom wall of the inner cavity (11), and the top of the drain hole (13) is wider and the bottom is narrower.
2、 根据权利要求 1所述的一种风机蜗壳排水结构，其特征在于：排水孔（ 13) 是沉孔， 包括顶部下沉的凹槽（ 131 )和底部的管道（ 132 )。 2. A blower volute drain structure according to claim 1, wherein: the drain hole (13) is a sink hole, a top sink comprises a groove (131) and the bottom of the pipe (132).
3、 根据权利要求 1所述的一种风机蜗壳排水结构，其特征在于：排水孔（ 13) 是上大下小的锥孔。  3. A fan volute drainage structure according to claim 1, wherein the drain hole (13) is a large and small tapered hole.
4、 根据权利要求 2所述的一种风机蜗壳排水结构， 其特征在于： 所述的管 道（132) 包括集水口 （1321)、 排水口 （ 1322 )和位于集水口 （1321 )和排水 口 （ 1322 )之间的导流段（ 1323 ), 集水口 （1321)、 排水口 （ 1322 )和导流段 4. A fan volute drainage structure according to claim 2, wherein: said duct (132) comprises a water collecting port (1321), a drain port (1322), and a water collecting port (1321) and a drain port. The diversion section ( 1323 ) between the ( 1322 ), the water collection port (1321), the drain port ( 1322 ) and the diversion section
( 1323 )三者的横截面形状和大小相同。 ( 1323 ) The cross-sectional shape and size of the three are the same.
5、 根据权利要求 4所述的一种风机蜗壳排水结构， 其特征在于： 所述的导 流段（ 1323 )外围形成一延伸出蜗壳体外面的管状体（14)。  5. A fan volute drainage structure according to claim 4, wherein: said guide section (1323) defines a tubular body (14) extending outside the volute casing.
6、 根据权利要求 5所述的一种风机蜗壳排水结构，其特征在于：管状体（ 14 ) 的外部设置加强筋 （15)。  6. A fan volute drainage structure according to claim 5, characterized in that the outer side of the tubular body (14) is provided with reinforcing ribs (15).
7、 根据权利要求 2所述的一种风机蜗壳排水结构，其特征在于：凹槽（ 131 ) 设置在内部空腔（11 )底壁的边缘， 管道（132) 的横截面形状是 U形。  7. A fan volute drainage structure according to claim 2, wherein the recess (131) is disposed at an edge of the bottom wall of the inner cavity (11), and the cross-sectional shape of the duct (132) is U-shaped. .
8、 根据权利要求 1所述的一种风机蜗壳排水结构，其特征在于：蜗壳体（ 1 ) 上还设置有若干安装脚（ 16 )。  8. A fan volute drainage structure according to claim 1, characterized in that the volute (1) is further provided with a plurality of mounting feet (16).
9、 根据权利要求 1所述的一种风机蜗壳排水结构，其特征在于：蜗壳体（ 1 ) 是一体注塑成型的。  9. A fan volute drainage structure according to claim 1, wherein the volute (1) is integrally injection molded.
PCT/CN2014/072705 2013-09-18 2014-02-28 Fan volute drainage structure WO2015039415A1 (en)

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