WO2021114527A1 - 一种后向离心叶轮及应用其的风机 - Google Patents

一种后向离心叶轮及应用其的风机 Download PDF

Info

Publication number
WO2021114527A1
WO2021114527A1 PCT/CN2020/083939 CN2020083939W WO2021114527A1 WO 2021114527 A1 WO2021114527 A1 WO 2021114527A1 CN 2020083939 W CN2020083939 W CN 2020083939W WO 2021114527 A1 WO2021114527 A1 WO 2021114527A1
Authority
WO
WIPO (PCT)
Prior art keywords
centrifugal impeller
edge
backward centrifugal
wave
backward
Prior art date
Application number
PCT/CN2020/083939
Other languages
English (en)
French (fr)
Inventor
徐海明
Original Assignee
中山宜必思科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中山宜必思科技有限公司 filed Critical 中山宜必思科技有限公司
Publication of WO2021114527A1 publication Critical patent/WO2021114527A1/zh

Links

Images

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
    • 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
    • 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 backward centrifugal impeller and a fan using the same.
  • the wind wheel structure used by the current fan includes a front air disc a1, a rear air disc a2, and a number of blades a3 installed and connected between the front air disc a1 and the rear air disc a2.
  • the front air disc a1 is provided with an air inlet a4 in the middle, and an air duct a5 is formed between two adjacent blades a3.
  • the blade a3 includes a front edge a31 close to the air inlet a4 and a rear edge located at the air outlet of the air duct a5 a32, the leading edge a31 is a smooth arched curve, this line type leads to poor aerodynamic performance and greater noise.
  • the purpose of the utility model is to provide a backward centrifugal impeller and a fan using the same, so as to solve the technical problems of poor aerodynamic performance and high noise caused by the structure of the backward centrifugal impeller in the prior art.
  • a rearward centrifugal impeller includes a front wind disk, a rear wind disk, and a plurality of blades installed and connected between the front wind disk and the rear wind disk.
  • An air inlet is arranged in the middle of the front wind disk, and the wind is formed between two adjacent blades.
  • the blade includes a front edge close to the air inlet and a rear edge located at the air outlet of the air channel, and is characterized in that the curve shape of the front edge is a wavy curve.
  • the above-mentioned pair 1 wave curve includes two wave crests and one wave trough, and the wave trough is located between the two wave crests.
  • the vertical distance H1 between the center O of the trough and the vertex A of the leading edge is greater than the vertical distance H2 between the center O of the trough and the lowest point B of the leading edge.
  • a number of cut grooves are provided on the above-mentioned rear edge.
  • two adjacent grooves are spaced apart from each other by a distance, and a wave-shaped layout of unevenness is formed on the rear edge.
  • a fan includes a volute, a centrifugal impeller, and a motor.
  • the centrifugal impeller is installed inside the volute.
  • the motor is installed in the volute and drives the centrifugal impeller to rotate.
  • the fan is characterized in that the centrifugal impeller is the aforementioned backward centrifugal impeller.
  • the curve shape of the front edge of the backward centrifugal impeller of the utility model is a wave curve, which can greatly improve poor aerodynamic performance and reduce noise. Through experimental tests and computer simulation tests, the improved front edge curve has good dynamic performance and poor dynamic performance. Low noise characteristics.
  • Figure 1 is a perspective view of a backward centrifugal impeller in the prior art
  • Figure 2 is a top view of a backward centrifugal impeller in the prior art
  • Figure 3 is a cross-sectional view of Figure 2 A-A;
  • Figure 4 is a perspective view of the utility model from an angle
  • Figure 5 is a perspective view of the utility model from another angle
  • Figure 6 is an exploded view of the utility model
  • Figure 7 is a perspective view of the blade of the utility model
  • Fig. 8 is a front view of the blade of the present invention.
  • this embodiment is a rearward centrifugal impeller, which includes a front fan 1, a rear fan 2, and a number of blades 3 installed and connected between the front fan 1 and the rear fan 2.
  • the front air disc 1 is provided with an air inlet 11 in the middle, and an air duct 33 is formed between two adjacent blades 3.
  • the blade 3 includes a front edge 31 close to the air inlet 11 and a rear edge located at the air outlet of the air duct 33 32, characterized in that: the curved shape of the leading edge 31 is a wavy curve.
  • the curve shape of the front edge of the backward centrifugal impeller of the utility model is a wave curve, which can greatly improve poor aerodynamic performance and reduce noise. Through experimental tests and computer simulation tests, the improved curve of the front edge has good poor dynamic performance and low noise characteristic.
  • the curve of the front edge 31 viewed from the line AB to the upper right forms a wavy curve.
  • the aforementioned wave curve includes two wave crests 312 and a wave trough 311.
  • the wave trough 311 is located between the two wave crests 312.
  • the curve shape of the leading edge is relatively simple and the aerodynamic performance is good.
  • the vertical distance H1 between the center O of the trough 311 and the vertex A of the front edge 31 is greater than the vertical distance H2 between the center O of the trough 311 and the lowest point B of the front edge 31, and the above H1>2H2, the curved shape design layout of the front edge is more reasonable. Further improve poor aerodynamic performance and reduce noise.
  • the rear edge 32 is provided with a plurality of cut grooves 321, and two adjacent grooves 321 of the plurality of cut grooves 321 are spaced apart from each other by a distance, and a wave-shaped layout of unevenness is formed on the rear edge 32.
  • the noise can be reduced, the wind speed on the trailing edge is closer, and the aerodynamic performance is better.
  • a number of cut grooves 321 are laid out from the top of the trailing edge 32, the bottom of the trailing edge 32 is not provided with grooves 321, and the top of the trailing edge 32 is evenly provided with 4 grooves 321. It can reduce the noise, make the wind speed more uniform, and the aerodynamic performance is better.
  • This embodiment provides a fan, including a volute, a centrifugal impeller, and a motor.
  • the centrifugal impeller is installed inside the volute.
  • the motor is installed in the volute and drives the centrifugal impeller to rotate. It is characterized in that the centrifugal impeller is the one described in the first embodiment. Backward centrifugal impeller. It has good dynamic performance and low noise characteristics.

Landscapes

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

Abstract

一种后向离心叶轮，包括前风盘（1）、后风盘（2）以及安装连接在前风盘和后风盘之间的若干叶片（3），前风盘中间设置进风口（11），相邻两叶片之间形成风道（33），叶片包括靠近进风口的前缘（31）和位于风道的出风口处的后缘（32），前缘的曲线形状是波浪曲线，该后向离心叶轮具有良好气动性能和低噪音特性。还包括应用后向离心叶轮的风机。

Description

一种后向离心叶轮及应用其的风机 技术领域：
本实用新型涉及一种后向离心叶轮及应用其的风机。
背景技术：
见图1、图2和图3所示，目前的风机使用的风轮结构包括前风盘a1、后风盘a2以及安装连接在前风盘a1和后风盘a2之间的若干叶片a3，所述前风盘a1中间设置进风口a4，相邻两叶片a3之间形成风道a5，所述的叶片a3包括靠近进风口a4的前缘a31和位于风道a5的出风口处的后缘a32,前缘a31是一条平滑的拱起的曲线，这种线型导致气动性能差、噪音较大。
发明内容：
本实用新型的目的是提供一种后向离心叶轮及应用其的风机，解决现有技术中后向离心叶轮的结构导致气动性能差、噪音较大的技术问题。
本实用新型的目的是通过下述技术方案予以实现的。
一种后向离心叶轮，包括前风盘、后风盘以及安装连接在前风盘和后风盘之间的若干叶片，所述前风盘中间设置进风口，相邻两叶片之间形成风道，所述的叶片包括靠近进风口的前缘和位于风道的出风口处的后缘，其特征在于：前缘的曲线形状是波浪曲线。
上述对1波浪曲线包括2个波峰和一个波谷，波谷位于2个波峰之间。
上述的波谷中心O与前缘顶点A的垂直距离H1大于波谷中心O与前缘最低点B的垂直距离H2。
上述的H1>2H2。
上述的后缘上设置若干个切割出来的凹槽。
上述的若干个切割出来的凹槽中相邻2个凹槽相互间隔一个距离，在后缘上形成凹凸相间的波浪形布局。
上述若干个切割出来的凹槽从后缘的顶部开始布局，后缘的底部不设置凹槽。
上述的后缘的顶部均匀设置4个凹槽。
一种风机，包括蜗壳、离心叶轮和电机，离心叶轮安装在蜗壳内部，电机安装在蜗壳并驱动离心叶轮转动，其特征在于：离心叶轮是上述所述的后向离心叶轮。
本实用新型与现有技术相比，具有如下效果：
1)本实用新型后向离心叶轮的前缘的曲线形状是波浪曲线，可以大幅提高气动性能差和降低噪音，通过实验测试和计算机模拟试验，改进后的前缘的曲线具有良好动性能差和低噪音特性。
2)本实用新型的其它优点在说明书实施例部分作详细的描述。
附图说明：
图1是现有技术后向离心叶轮的立体图；
图2是现有技术后向离心叶轮的俯视图；
图3是图2的A-A剖视图；
图4是本实用新型的一个角度的立体图；
图5是本实用新型的另一个角度的立体图；
图6是本实用新型的分解图；
图7是本实用新型的叶片的立体图；
图8是本实用新型的叶片的主视图。
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4至图8所示，本实施例是一种后向离心叶轮，包括前风盘1、后风盘2以及安装连接在前风盘1和后风盘2之间的若干叶片3，所述前风盘1中间设置进风口11，相邻两叶片3之间形成风道33，所述的叶片3包括靠近进风口11的前缘31和位于风道33的出风口处的后缘32，其特征在于：前缘31的曲线形状是波浪曲线。本实用新型后向离心叶轮的前缘的曲线形状是波浪曲线，可以 大幅提高气动性能差和降低噪音，通过实验测试和计算机模拟试验，改进后的前缘的曲线具有良好动性能差和低噪音特性。图8中，从AB的连线往右上方看前缘31的曲线形成波浪曲线。
上述的波浪曲线包括2个波峰312和一个波谷311，波谷311位于2个波峰312之间，前缘的曲线形状较为简洁，气动性能良好。
上述的波谷311中心O与前缘31顶点A的垂直距离H1大于波谷311中心O与前缘31最低点B的垂直距离H2，上述的H1>2H2，前缘的曲线形状设计布局更加合理，可以进一步提高气动性能差和降低噪音。
上述后缘32上设置若干个切割出来的凹槽321，若干个切割出来的凹槽321中相邻2个凹槽321相互间隔一个距离，在后缘32上形成凹凸相间的波浪形布局。可以减少噪音，使流过后缘上风速更接近，气动性能更好。
若干个切割出来的凹槽321从后缘32的顶部开始布局，后缘32的底部不设置凹槽321，后缘32的顶部均匀设置4个凹槽321。具有降低噪音使风速更均匀，气动性能更好。
实施例二：
本实施例是提供一种风机，包括蜗壳、离心叶轮和电机，离心叶轮安装在蜗壳内部，电机安装在蜗壳并驱动离心叶轮转动，其特征在于：离心叶轮是实施例一所述的后向离心叶轮。它具有良好动性能差和低噪音特性。
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 (9)

  1. 一种后向离心叶轮，包括前风盘、后风盘以及安装连接在前风盘和后风盘之间的若干叶片，所述前风盘中间设置进风口，相邻两叶片之间形成风道，所述的叶片包括靠近进风口的前缘和位于风道的出风口处的后缘，其特征在于：前缘的曲线形状是波浪曲线。
  2. 根据权利要求1所述的一种后向离心叶轮，其特征在于：波浪曲线包括2个波峰和一个波谷，波谷位于2个波峰之间。
  3. 根据权利要求2所述的一种后向离心叶轮，其特征在于：波谷中心O与前缘顶点A的垂直距离H1大于波谷中心O与前缘最低点B的垂直距离H2。
  4. 根据权利要求3所述的一种后向离心叶轮，其特征在于：H1>2H2。
  5. 根据权利要求1或2或3或4所述的一种后向离心叶轮，其特征在于：后缘上设置若干个切割出来的凹槽。
  6. 根据权利要求5所述的一种后向离心叶轮，其特征在于：若干个切割出来的凹槽中相邻2个凹槽相互间隔一个距离，在后缘上形成凹凸相间的波浪形布局。
  7. 根据权利要求6所述的一种后向离心叶轮，其特征在于：若干个切割出来的凹槽从后缘的顶部开始布局，后缘的底部不设置凹槽。
  8. 根据权利要求7所述的一种后向离心叶轮，其特征在于：后缘的顶部均匀设置4个凹槽。
  9. 一种风机，包括蜗壳、离心叶轮和电机，离心叶轮安装在蜗壳内部，电机安装在蜗壳并驱动离心叶轮转动，其特征在于：离心叶轮是权利要求1至8任意一项所述的后向离心叶轮。
PCT/CN2020/083939 2019-12-09 2020-04-09 一种后向离心叶轮及应用其的风机 WO2021114527A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201922184184.2 2019-12-09
CN201922184184.2U CN211525179U (zh) 2019-12-09 2019-12-09 一种后向离心叶轮及应用其的风机

Publications (1)

Publication Number Publication Date
WO2021114527A1 true WO2021114527A1 (zh) 2021-06-17

Family

ID=72464879

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/083939 WO2021114527A1 (zh) 2019-12-09 2020-04-09 一种后向离心叶轮及应用其的风机

Country Status (2)

Country Link
CN (1) CN211525179U (zh)
WO (1) WO2021114527A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115717604A (zh) * 2022-09-28 2023-02-28 广东顺威精密塑料股份有限公司 一种带襟叶的后向离心风轮及其叶片叶型设计方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3057166B2 (ja) * 1991-04-18 2000-06-26 日照技研株式会社 起流機
CN104100570A (zh) * 2014-07-09 2014-10-15 德意电器股份有限公司 一种吸油烟机用仿生叶轮
CN104564805A (zh) * 2013-10-29 2015-04-29 海尔集团公司 一种离心风机的扇叶结构、离心风机及嵌入式空调内机
CN106402021A (zh) * 2016-10-31 2017-02-15 中车株洲电力机车有限公司 一种离心风机叶轮
CN107076164A (zh) * 2014-10-30 2017-08-18 三菱电机株式会社 涡轮风扇和空气调节装置用室内机
CN108350904A (zh) * 2015-08-31 2018-07-31 施乐百有限公司 风机叶轮、风机和具有至少一个风机的系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3057166B2 (ja) * 1991-04-18 2000-06-26 日照技研株式会社 起流機
CN104564805A (zh) * 2013-10-29 2015-04-29 海尔集团公司 一种离心风机的扇叶结构、离心风机及嵌入式空调内机
CN104100570A (zh) * 2014-07-09 2014-10-15 德意电器股份有限公司 一种吸油烟机用仿生叶轮
CN107076164A (zh) * 2014-10-30 2017-08-18 三菱电机株式会社 涡轮风扇和空气调节装置用室内机
CN108350904A (zh) * 2015-08-31 2018-07-31 施乐百有限公司 风机叶轮、风机和具有至少一个风机的系统
CN106402021A (zh) * 2016-10-31 2017-02-15 中车株洲电力机车有限公司 一种离心风机叶轮

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115717604A (zh) * 2022-09-28 2023-02-28 广东顺威精密塑料股份有限公司 一种带襟叶的后向离心风轮及其叶片叶型设计方法

Also Published As

Publication number Publication date
CN211525179U (zh) 2020-09-18

Similar Documents

Publication Publication Date Title
WO2019136939A1 (zh) 轴流扇叶、轴流风机扇叶组件、轴流风机风道组件
US3995970A (en) Axial-flow fan
WO2019153536A1 (zh) 轴流风轮及空调器
JP5866802B2 (ja) ノズル翼
CN104196761A (zh) 一种双进风离心风机
CN202391808U (zh) 低噪音轴流风轮
CN205383109U (zh) 离心风机及空调器
CN211449177U (zh) 叶轮、混流风机以及空调器
WO2021114527A1 (zh) 一种后向离心叶轮及应用其的风机
JP2008223741A (ja) 遠心送風機
CN105221479A (zh) 离心风机叶轮、离心风机及空调
JP5712346B2 (ja) 天井扇
CN203584898U (zh) 一种低噪高效的中央空调室外机冷却轴流风机
CN110608196A (zh) 一种带半叶高小叶片的楔形扩压器
WO2021114739A1 (zh) 新型蜗舌结构、风机蜗壳及风机
CN206816552U (zh) 轴流风轮及空调器
CN108953222B (zh) 一种离心叶轮
CN207420962U (zh) 一种用于空调器室外机的轴流风扇及空调室外机
TW202020313A (zh) 葉片及使用其的軸流葉輪
CN110566500A (zh) 一种离心通风机的叶轮
CN103629156B (zh) 一种低噪高效的中央空调室外机冷却轴流风机
CN207455776U (zh) 一种空调室外机用的出风格栅
KR20190125501A (ko) 임펠러, 팬 및 모터
CN103388591B (zh) 散热风扇
CN204827981U (zh) 一种高效混流风机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20897792

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20897792

Country of ref document: EP

Kind code of ref document: A1