WO2020042550A1 - 一种蜗壳风机及其应用的风机系统 - Google Patents

一种蜗壳风机及其应用的风机系统 Download PDF

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Publication number
WO2020042550A1
WO2020042550A1 PCT/CN2019/076272 CN2019076272W WO2020042550A1 WO 2020042550 A1 WO2020042550 A1 WO 2020042550A1 CN 2019076272 W CN2019076272 W CN 2019076272W WO 2020042550 A1 WO2020042550 A1 WO 2020042550A1
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Prior art keywords
volute
panel
end panel
blade
air inlet
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Ceased
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PCT/CN2019/076272
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English (en)
French (fr)
Inventor
林炎虎
张淼
肖佰显
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Zhongshan Broad Ocean Motor Co Ltd
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Zhongshan Broad Ocean Motor Co Ltd
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Publication of WO2020042550A1 publication Critical patent/WO2020042550A1/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
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing

Definitions

  • the utility model relates to a volute fan and a fan system applied thereto.
  • a conventional volute fan includes a volute 1 a and a wind wheel 2 a.
  • the wind wheel 2 a is installed in a cavity of the volute 1 a.
  • the volute 1 a includes an upper end panel 11 a and a lower end panel 12 a. And a side panel 13a connected between the upper end panel 11a and the lower end panel 12a.
  • the lower end panel 12a is provided with a first air inlet 15a, and the side panel 13a is provided with a first air outlet 16a.
  • the wind wheel 2a includes an upper wind plate 21a.
  • a second air inlet 24a is provided in the middle of the downwind disk 22a, and an air duct is formed between two adjacent blades 23a.
  • the blade 23a is divided into an inner blade section 231a and an outer blade section 232a.
  • the blade 23a radially exceeding the upper wind plate 21a belongs to the outer blade section 232a.
  • the inner blade section 23a located within the second air inlet 24a belongs to the inner blade section 231a.
  • the distance h1 between the top surface 2321a and the first inner side surface 111a of the upper end panel 11a is equal in the radial direction, and the second inner side surface 121a of the lower end panel 12a is a plane.
  • the airflow enters from the first air inlet 15a, flows through the air passage between the second air inlet 24a, the upper wind plate 21a and the lower wind plate 22a, exits from the air passage between the upper wind plate 21a and the lower wind plate 22a, and enters the upper panel 11a and
  • the sudden increase in the air outlet area between the downwind disk 22a will cause a large stripping loss of the airflow, and also cause a sudden change in the airflow velocity and pressure, which will cause turbulence and large rotational noise.
  • the overall efficiency is low and Cause noise and vibration of the whole machine.
  • the purpose of the utility model is to provide a volute fan and a fan system applied thereto.
  • a volute fan includes a volute and a wind wheel.
  • the volute includes an upper end panel, a lower end panel, and a side panel connected between the upper end panel and the lower end panel.
  • the upper end panel, the lower end panel, and the side panel surround a cavity.
  • the wheel is installed in the cavity.
  • the lower end plate is provided with a first air inlet and the side plate is provided with a first air outlet.
  • the wind wheel includes an upper wind plate, a lower wind plate, and a wind turbine connected between the upper wind plate and the lower wind plate.
  • a plurality of blades are provided with a second air inlet in the middle of the downwind disk, and an air channel is formed between two adjacent blades.
  • the first air inlet, the second air inlet, the air channel, and the first air outlet communicate with the cavity.
  • the blade is divided into an inner section of the blade and an outer section of the blade, and the blades radially beyond the upper wind disk belong to the outer section of the blade, and the inner section of the blade located inside the second air inlet belongs to the inner section of the blade.
  • the distance between the inner sides gradually increases from the inside to the outside in the radial direction.
  • the middle part of the upper end panel is provided with a concave part that is concave toward the cavity, and the outer part of the upper end panel is gradually shifted upward from the inside to the outside.
  • the top surface 2321 of the blade outer section 232 is a flat surface.
  • the outer side of the upper panel is a curved panel.
  • the distance between the bottom surface of the inner section of the blade and the second inner surface of the lower end panel is equal from the inside to the outside in the radial direction and then gradually increases.
  • the distance between the first end surface of the downwind disc and the second inner surface of the lower end panel gradually increases from the inside to the outside in the radial direction.
  • the second inner side surface and the second outer side surface of the lower end panel are curved surfaces.
  • a plurality of mounting legs are provided on the side panel, and the second end surface of the mounting leg is higher than the third end surface of the lower panel.
  • An annular boss protrudes from the periphery of the first air inlet, and a fourth end surface of the annular boss is flush with a second end surface of the mounting leg.
  • a fan system includes a volute fan and a motor.
  • the volute fan includes a volute and a wind wheel.
  • the motor is installed on an upper end plate of the volute.
  • the output shaft of the motor is connected to the wind wheel through the upper end panel.
  • the shell fan is a volute fan described above.
  • a volute fan including a volute and a wind wheel the volute includes an upper panel, a lower panel, and a side panel connected between the upper and lower panels, and the upper panel, the lower panel, and the side panel surround a cavity
  • the wind wheel is installed in the cavity.
  • the lower end plate is provided with a first air inlet and the side plate is provided with a first air outlet.
  • the wind wheel includes an upper wind plate, a lower wind plate, and a fan connected to the upper wind plate and the lower wind plate.
  • a plurality of blades are provided with a second air inlet in the middle of the downwind disk, and an air channel is formed between two adjacent blades. The first air inlet, the second air inlet, the air channel, and the first air outlet communicate with the cavity.
  • the blade is divided into an inner section of the blade and an outer section of the blade.
  • the blades that radially exceed the upper wind disk belong to the outer section of the blade, and the inner section of the blade located within the second air inlet belongs to the inner section of the blade.
  • the distance between the first inner side surfaces gradually increases from the inside to the outside in the radial direction.
  • the airflow enters from the first air inlet, passes through the second air inlet, and exits from the air duct between the upper wind plate and the lower wind plate, and enters the air passage between the lower wind plate and the upper panel.
  • the distance between the first inner side is gradually increased, so the area of the airflow is gradually increased, so it can avoid the stripping loss of the airflow and the sudden change of the airflow velocity and pressure, avoiding wheezing and large Rotation noise, to avoid causing noise and vibration of the whole machine, and improve overall efficiency.
  • the distance between the bottom surface of the inner section of the blade and the second inner surface of the lower end panel is equal from the inside to the outside in the radial direction and then gradually increases.
  • the airflow enters from the first air inlet, and passes between the bottom surface of the inner section of the blade and the lower end panel, and between the lower wind plate and the lower end panel.
  • the distance between the first end surface of the downwind disc and the second inner surface of the lower end panel gradually increases from the inside to the outside in the radial direction.
  • the airflow enters from the first air inlet, and passes between the bottom surface of the inner section of the blade and the lower end panel, and between the lower wind plate and the lower end panel.
  • a plurality of mounting feet are provided on the side panel, and the mounting feet are used to install the load.
  • the second end surface of the mounting foot is higher than the third end surface of the lower panel, which is beneficial to reducing the contact surface between the load and the volute fan and avoiding the load and The volute fan resonates.
  • An annular boss is protruded on the periphery of the first air inlet.
  • the fourth end face of the annular boss is flush with the second end face of the mounting leg, which increases the contact area between the volute fan and the load, which is conducive to the stable installation of the load. .
  • a fan system adopts the volute fan described in the present utility model, which effectively solves the problems of large airflow stripping loss caused by the sudden increase in the area of the airflow and the sudden change of the airflow velocity and pressure, so as to avoid causing asthma Flow and large rotation noise, to avoid causing noise and vibration of the fan system, and improve the overall efficiency of the fan system.
  • FIG. 1 is a perspective view of a volute fan provided by the background technology of the present utility model
  • FIG. 2 is a perspective view of the volute fan provided by the background technology of the present utility model at another angle;
  • FIG. 3 is a schematic cross-sectional view of a volute fan provided by the background technology of the present utility model
  • FIG. 4 is a perspective view of a volute fan provided by the first embodiment of the present invention.
  • FIG. 5 is another perspective view of the volute fan provided by the first embodiment of the present invention.
  • FIG. 6 is a bottom view of the volute fan provided by the first embodiment of the present invention.
  • Fig. 7 is a sectional view taken along A-A in Fig. 6;
  • FIG. 8 is a partially enlarged view of B in FIG. 7;
  • FIG. 9 is a partially enlarged view of C in FIG. 7; FIG.
  • FIG. 10 is an exploded view of a volute fan provided by the first embodiment of the present invention.
  • FIG. 11 is a perspective view of a fan system according to a second embodiment of the present invention.
  • FIG. 12 is a schematic cross-sectional view of a fan system according to a second embodiment of the present invention.
  • a volute fan includes a volute 1 and a wind wheel 2.
  • the volute 1 includes an upper end panel 11, a lower end panel 12, and a side connected between the upper end panel 11 and the lower end panel 12.
  • the panel 13, the upper panel 11, the lower panel 12, and the side panel 13 surround a cavity 14, and the wind wheel 2 is installed in the cavity 14.
  • the lower panel 12 is provided with a first air inlet 15, and the side panel 13 is provided with A first air outlet 16, the wind wheel 2 includes an upper air disk 21, a lower air disk 22, and a plurality of blades 23 connected between the upper air disk 21 and the lower air disk 22, and a second air inlet 24 is provided in the middle of the lower air disk 22,
  • An air duct 25 is formed between two adjacent blades 23, and the first air inlet 15, the second air inlet 24, the air channel 25, and the first air outlet 16 are communicated with the cavity 14, and the blade 23 is divided into the inner section of the blade 231 and blade outer section 232, the blade 23 radially beyond the upper wind plate 21 belongs to the blade outer section 232, and the blade inner section 231 located within the second air inlet 24 belongs to the top surface 2321 and the upper panel 11 of the blade outer section 232
  • the distance H1 between the first inner side surfaces 111 in the radial direction gradually increases from the inside to the outside.
  • the middle portion of the upper end panel 11 is provided with a recessed portion 112 which is recessed into the cavity 14, and the outer portion 113 of the upper end panel 11 is gradually shifted upward from the inside to the outside.
  • the top surface 2321 of the blade outer section 232 is a flat surface.
  • the exterior 113 of the upper panel 11 is a curved panel.
  • the distance H2 between the bottom surface 2311 of the inner section 231 of the blade and the second inner surface 121 of the lower end panel 12 is equal from the inside to the outside in the radial direction, and then gradually increases.
  • a distance H3 between the first end surface 221 of the downdraft disc 22 and the second inner surface 121 of the lower end panel 12 gradually increases from the inside to the outside in the radial direction.
  • the second inner side surface 121 and the second outer side surface 122 of the lower end panel 12 are curved surfaces.
  • a plurality of mounting legs 131 are provided on the side panel 13, and the second end surface 1311 of the mounting leg 131 is higher than the third end surface 124 of the lower end panel 12.
  • annular boss 123 protrudes from the periphery of the first air inlet 15, and a fourth end surface 1231 of the annular boss 123 is flush with the second end surface 1311 of the mounting leg 131.
  • a fan system includes a volute fan and a motor 3.
  • the volute fan includes a volute 1 and a wind wheel 2.
  • the motor 3 is installed on an upper end panel 11 of the volute 1 and the motor 3.
  • the output shaft 31 is drivingly connected to the wind wheel 2 through the upper end panel 11.
  • the volute fan is a volute fan described in the first embodiment.

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

Abstract

一种蜗壳风机及其应用的风机系统，该蜗壳风机包括蜗壳(1)和风轮(2)，蜗壳(1)包括上端面板(11)、下端面板(12)和连接在上端面板(11)和下端面板(12)之间的侧面板(13)，上端面板(11)、下端面板(12)和侧面板(13)围成空腔(14)，风轮(2)安装在空腔(14)里，下端面板(12)上设有第一进风口(15)，侧面板(13)上设有第一出风口(16)，风轮(2)包括上风盘(21)、下风盘(22)以及连接在上风盘(21)和下风盘(22)之间的若干叶片(23)，在下风盘(22)的中部设有第二进风口(24)，相邻两叶片(23)之间形成风道(25)，第一进风口(15)、第二进风口(24)、风道(25)、第一出风口(16)与空腔(14)连通，每一叶片(23)包括叶片内段(231)和叶片外段(232)，径向超出上风盘(21)的叶片(23)属于叶片外段(232)，位于第二进风口(24)以内的属于叶片内段(231)，叶片外段(232)的顶面(2321)与上端面板(11)的第一内侧面(111)之间的距离H1在径向方向由内往外逐渐变大。该蜗壳风机可以避免造成气流剥离损失和气流流速、压力突然变化，避免引起喘流，避免产生噪音和振动。

Description

一种蜗壳风机及其应用的风机系统 技术领域：
本实用新型涉及一种蜗壳风机及其应用的风机系统。
背景技术：
如图1至图3所示，现有的蜗壳风机，包括蜗壳1a和风轮2a,风轮2a安装在蜗壳1a的空腔里，所述蜗壳1a包括上端面板11a、下端面板12a和连接在上端面板11a和下端面板12a之间的侧面板13a，下端面板12a上设有第一进风口15a，侧面板13a上设有第一出风口16a，所述风轮2a包括上风盘21a、下风盘22a以及连接在上风盘21a和下风盘22a之间的若干叶片23a，在下风盘22a的中部设有第二进风口24a，相邻两叶片23a之间形成风道，所述每一叶片23a分为叶片内段231a和叶片外段232a，径向超出上风盘21a的叶片23a属于叶片外段232a，位于第二进风口24a以内的属于叶片内段231a，所述叶片外段232a的顶面2321a与上端面板11a的第一内侧面111a之间的距离h1在径向方向相等，下端面板12a的第二内侧面121a是个平面。这样的结构存在以下问题：
气流从第一进风口15a进入，流经第二进风口24a、上风盘21a和下风盘22a之间的风道，从上风盘21a和下风盘22a之间的风道出来后进入上端面板11a与下风盘22a之间的风道，出风面积突然增大，会造成气流的剥离损失很大，另外导致气流流速以及压力突然变化，会引起喘流以及较大的旋转噪声，总体效率较低并引起整机的噪音和振动。
实用新型内容：
本实用新型的目的是提供一种蜗壳风机及其应用的风机系统，通过将叶片外段的顶面与上端面板的内侧面之间的距离在径向方向上设置成逐渐增大，可有效解决气流因出风面积突然增大造成很大的气流剥离损失以及导致气流流速和压力突然变化的问题，避免引起喘流以及较大的旋转噪声，避免引起整机产生噪音和振动，提高总体效率。
本实用新型的目的是通过下述技术方案予以实现的：
一种蜗壳风机，包括蜗壳和风轮,所述蜗壳包括上端面板、下端面板和连接在上端面板和下端面板之间的侧面板，上端面板、下端面板和侧面板围成空腔，风轮安装在空腔里，所述下端面板上设有第一进风口，侧面板上设有第一出风口，所述风轮包括上风盘、下风盘以及连接在上风盘和下风盘之间的若干叶片，在下风盘的中部设有第二进风口，相邻两叶片之间形成风道，所述第一进风口、第二进风口、风道、第一出风口与空腔连通，所述叶片分为叶片内段和叶片外段，径向超出上风盘的叶片属于叶片外段，位于第二进风口以内的属于叶片内段，所述叶片外段的顶面与上端面板的第一内侧面之间的距离在径向方向由内往外逐渐变大。
上述所述上端面板的中部设有向空腔内凹的凹部，上端面板的外部是由内往外逐渐向上偏移。
上述所述叶片外段232的顶面2321是平面。
上述所述上端面板的外部是个曲面板。
上述所述叶片内段的底面与下端面板的第二内侧面之间的距离在径向方向由内往外先相等再逐渐变大。
上述所述下风盘的第一端面与下端面板的第二内侧面之间的距离在径向方向由内往外逐渐变大。
上述所述下端面板的第二内侧面和第二外侧面是个曲面。
在上述所述侧面板上设置若干安装脚，所述安装脚的第二端面高出下端面板的第三端面。
在上述所述第一进风口的外围凸出环形凸台，所述环形凸台的第四端面与安装脚的第二端面齐平。
一种风机系统，包括蜗壳风机和电机，所述蜗壳风机包括蜗壳和风轮，电机安装在蜗壳的上端面板上，电机的输出轴穿过上端面板与风轮传动连接，所述蜗壳风机是上述所述的一种蜗壳风机。
本实用新型与现有技术相比，具有如下效果：
1)一种蜗壳风机，包括蜗壳和风轮,所述蜗壳包括上端面板、下端面板和连接在上端面板和下端面板之间的侧面板，上端面板、下端面板和侧面板围成空腔，风轮安装在空腔里，所述下端面板上设有第一进风口，侧面板上设有第一出风口，所述风轮包括上风盘、下风盘以及连接在上风盘和下风盘之间的若干叶片，在下风盘的中部设有第二进风口，相邻两叶片之间形成风道，所述第一进风口、第二进风口、风道、第一出风口与空腔连通，所述叶片分为叶片内段和叶片外段，径向超出上风盘的叶片属于叶片外段，位于第二进风口以内的属于叶片内段，所述叶片外段的顶面与上端面板的第一内侧面之间的距离在径向方向由内往外逐渐变大。气流从第一进风口进入，途径第二进风口，并从上风盘和下风盘之间的风道出来进入下风盘与上端面板之间的风道，由于叶片外段的顶面与上端面板的第一内侧面之间的距离是逐渐变大的，所以气流的出风面积也是逐渐增大的，因此可以避免造成气流的剥离损失和气流流速和压力突然变化，避免引起喘流以及较大的旋转噪声，避免引起整机产生噪音和振动，提高总体效率。
2)叶片内段的底面与下端面板的第二内侧面之间的距离在径向方向由内往外先相等再逐渐变大。气流从第一进风口进入，途径叶片内段的底面与下端面板之间、下风盘与下端面板之间，这样设置也可以避免气流的出风面积突然增大造成很大的气流剥离损失以及导致气流流速和压力突然变化，效果更好。
3)上述所述下风盘的第一端面与下端面板的第二内侧面之间的距离在径向方向由内往外逐渐变大。气流从第一进风口进入，途径叶片内段的底面与下端面板之间、下风盘与下端面板之间，这样设置也可以避免气流的出风面积突然增大造成很大的气流剥离损失以及导致气流流速和压力突然变化，效果最好。
4)在侧面板上设置若干安装脚，安装脚用于安装负载，所述安装脚的第二端面高出下端面板的第三端面，有利于减少负载与蜗壳风机的接触面，避免负 载与蜗壳风机发生共振。
5)在第一进风口的外围凸出环形凸台，所述环形凸台的第四端面与安装脚的第二端面齐平，增加蜗壳风机与负载的接触面积，有利于负载的安装稳固。
6)一种风机系统，由于采用了本实用新型描述的蜗壳风机，有效解决气流因出风面积突然增大造成很大的气流剥离损失以及导致气流流速和压力突然变化的问题，避免引起喘流以及较大的旋转噪声，避免引起风机系统产生噪音和振动，提高了风机系统的总体效率。
附图说明：
图1是本实用新型背景技术提供的蜗壳风机的立体图；
图2是本实用新型背景技术提供的蜗壳风机另一角度的立体图；
图3是本实用新型背景技术提供的蜗壳风机的剖面示意图；
图4是本实用新型实施例一提供的蜗壳风机的立体图；
图5是本实用新型实施例一提供的蜗壳风机另一角度的立体图；
图6是本实用新型实施例一提供的蜗壳风机的仰视图；
图7是图6中A-A的剖视图；
图8是图7中B的局部放大图；
图9是图7中C的局部放大图；
图10是本实用新型实施例一提供的蜗壳风机的爆炸图；
图11是本实用新型实施例二提供的风机系统的立体图；
图12是本实用新型实施例二提供的风机系统的剖面示意图。
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4至图10所示，一种蜗壳风机，包括蜗壳1和风轮2,所述蜗壳1包括上端面板11、下端面板12和连接在上端面板11和下端面板12之间的侧面板13，上端面板11、下端面板12和侧面板13围成空腔14，风轮2安装在空腔14 里，所述下端面板12上设有第一进风口15，侧面板13上设有第一出风口16，所述风轮2包括上风盘21、下风盘22以及连接在上风盘21和下风盘22之间的若干叶片23，在下风盘22的中部设有第二进风口24，相邻两叶片23之间形成风道25，所述第一进风口15、第二进风口24、风道25、第一出风口16与空腔14连通，所述叶片23分为叶片内段231和叶片外段232，径向超出上风盘21的叶片23属于叶片外段232，位于第二进风口24以内的属于叶片内段231，所述叶片外段232的顶面2321与上端面板11的第一内侧面111之间的距离H1在径向方向由内往外逐渐变大。
优选的，所述上端面板11的中部设有向空腔14内凹的凹部112，上端面板11的外部113是由内往外逐渐向上偏移。
优选的，所述叶片外段232的顶面2321是平面。
优选的，所述上端面板11的外部113是个曲面板。
优选的，所述叶片内段231的底面2311与下端面板12的第二内侧面121之间的距离H2在径向方向由内往外先相等再逐渐变大。
优选的，所述下风盘22的第一端面221与下端面板12的第二内侧面121之间的距离H3在径向方向由内往外逐渐变大。
优选的，所述下端面板12的第二内侧面121和第二外侧面122是个曲面。
优选的，在所述侧面板13上设置若干安装脚131，所述安装脚131的第二端面1311高出下端面板12的第三端面124。
优选的，在所述第一进风口15的外围凸出环形凸台123，所述环形凸台123的第四端面1231与安装脚131的第二端面1311齐平。
实施例二：
如图11和图12所示，一种风机系统，包括蜗壳风机和电机3，所述蜗壳风机包括蜗壳1和风轮2，电机3安装在蜗壳1的上端面板11上，电机3的输出轴31穿过上端面板11与风轮2传动连接，所述蜗壳风机是实施例一所述的一种蜗壳风机。
以上实施例为本发明的较佳实施方式，但本发明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. 一种蜗壳风机，包括蜗壳(1)和风轮(2),所述蜗壳(1)包括上端面板(11)、下端面板(12)和连接在上端面板(11)和下端面板(12)之间的侧面板(13)，上端面板(11)、下端面板(12)和侧面板(13)围成空腔(14)，风轮(2)安装在空腔(14)里，所述下端面板(12)上设有第一进风口(15)，侧面板(13)上设有第一出风口(16)，所述风轮(2)包括上风盘(21)、下风盘(22)以及连接在上风盘(21)和下风盘(22)之间的若干叶片(23)，在下风盘(22)的中部设有第二进风口(24)，相邻两叶片(23)之间形成风道(25)，所述第一进风口(15)、第二进风口(24)、风道(25)、第一出风口(16)与空腔(14)连通，所述每一叶片(23)包括叶片内段(231)和叶片外段(232)，径向超出上风盘(21)的叶片(23)属于叶片外段(232)，位于第二进风口(24)以内的属于叶片内段(231)，其特征在于：所述叶片外段(232)的顶面(2321)与上端面板(11)的第一内侧面(111)之间的距离H1在径向方向由内往外逐渐变大。
  2. 根据权利要求1所述的一种蜗壳风机，其特征在于：所述上端面板(11)的中部设有向空腔(14)内凹的凹部(112)，上端面板(11)的外部(113)是由内往外逐渐向上偏移。
  3. 根据权利要求2所述的一种蜗壳风机，其特征在于：所述叶片外段(232)的顶面(2321)是平面。
  4. 根据权利要求1或2或3所述的一种蜗壳风机，其特征在于：所述上端面板(11)的外部(113)是个曲面板。
  5. 根据权利要求2所述的一种蜗壳风机，其特征在于：所述叶片内段(231)的底面(2311)与下端面板(12)的第二内侧面(121)之间的距离H2在径向方向由内往外先相等再逐渐变大。
  6. 根据权利要求5所述的一种蜗壳风机，其特征在于：所述下风盘(22)的第一端面(221)与下端面板(12)的第二内侧面(121)之间的距离H3在径 向方向由内往外逐渐变大。
  7. 根据权利要求6所述的一种蜗壳风机，其特征在于：所述下端面板(12)的第二内侧面(121)和第二外侧面(122)是个曲面。
  8. 根据权利要求1或2或3或5或6或7所述的一种蜗壳风机，其特征在于：在所述侧面板(13)上设置若干安装脚(131)，所述安装脚(131)的第二端面(1311)高出下端面板(12)的第三端面(124)。
  9. 根据权利要求8所述的一种蜗壳风机，其特征在于：在所述第一进风口(15)的外围凸出环形凸台(123)，所述环形凸台(123)的第四端面(1231)与安装脚(131)的第二端面(1311)齐平。
  10. 一种风机系统，包括蜗壳风机和电机(3)，所述蜗壳风机包括蜗壳(1)和风轮(2)，电机(3)安装在蜗壳(1)的上端面板(11)上，电机(3)的输出轴(31)穿过上端面板(11)与风轮(2)传动连接，其特征在于：所述蜗壳风机是权利要求1至9任意一项权利要求所述的一种蜗壳风机。
PCT/CN2019/076272 2018-08-27 2019-02-27 一种蜗壳风机及其应用的风机系统 Ceased WO2020042550A1 (zh)

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