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TWI328080B - Fan and impeller thereof - Google Patents

Fan and impeller thereof Download PDF

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Publication number
TWI328080B
TWI328080B TW096111219A TW96111219A TWI328080B TW I328080 B TWI328080 B TW I328080B TW 096111219 A TW096111219 A TW 096111219A TW 96111219 A TW96111219 A TW 96111219A TW I328080 B TWI328080 B TW I328080B
Authority
TW
Taiwan
Prior art keywords
fan
hub
impeller
angle
degrees
Prior art date
Application number
TW096111219A
Other languages
Chinese (zh)
Other versions
TW200839100A (en
Inventor
Shun Chen Chang
Shuo Shiu Hsu
Original Assignee
Delta Electronics Inc
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 Delta Electronics Inc filed Critical Delta Electronics Inc
Priority to TW096111219A priority Critical patent/TWI328080B/en
Priority to US12/028,648 priority patent/US20080240921A1/en
Publication of TW200839100A publication Critical patent/TW200839100A/en
Application granted granted Critical
Publication of TWI328080B publication Critical patent/TWI328080B/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
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
    • F04D29/526—Details of the casing section radially opposing blade tips
    • 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
    • F04D29/325—Rotors specially for elastic fluids for axial flow pumps for axial flow fans
    • F04D29/329—Details of the hub

Landscapes

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

Description

1328080 [0001] [0002] [0003] 發明說明： 【發明所屬之技術領域】 本發明係關於一種風扇及其葉輪，特別是關於一種能夠 提高性能的風扇及其葉輪。 【先前技術】 風扇之工作效能，乃以風扇能產生的風壓及風量為指標 ，為提高風壓及風量，改變扇葉的安裝角度或是提高風 扇的轉速是方法之一。然而，在提高風扇轉速或是改變 扇葉的安裝角度之後，噪音卻隨之增加。 第一圖為習知之風扇的剖面圖。習知之風扇1包括有一 扇框10，一馬達11及一葉輪12。扇框10包括一殼體103 、一底座104以及至少一肋條105連接殼體103與底座 104 。扇框10具有一入風口 101及一出風口 102，底座 104係設置於出風口處102，殼體103於入風口處101及出 風口處102分別具有第一導角108及第二導角109，第一 導角108及第二導角109為一斜面設計，以輔勗氣流導入 及導出。 [0004] 096111219 葉輪12包括一輪轂121及複數個扇葉122環設於輪轂121 之周緣，然而，由於扇框1 0内部的空間不足，因此，輪 敎121在設計上為垂直的設計。當氣流由入風口 1 01導入 後，由於輪轂121為垂直結構，因此，氣流直接經由第二 導角109由出風口處102導出，亦即氣流加壓的效果並不 顯著，如此一來，習知之風扇1在特性上無法有良好的表 現。 因此，如何提供一種風扇及其扇框，其可提高風扇之 表單編號A0101 第3頁/共11頁 0993099858-0 [0005] 1328080 風壓及風量，進而增進風扇之工作效能，實為重要的課 題之一。 【發明内容】 [0006] 有鑑於上述課題，本發明的目的是在提供一種葉輪， 其可增加風扇的風壓及風量。 [0007] 本發明的另一目的是提供一種風扇，其藉由設置於輪 轂之導流結構，使流道縮小以擠壓氣流，並進而提高風 扇之風量及風壓。 [0008] 基於上述或其他目的，本發明提出一種葉輪，包括一 輪轂及複數個扇葉，輪轂具有至少一曲形表面，而複數 個扇葉係環設於輪轂之周緣。輪轂之頂面外徑與底面 外徑的比例小於0. 45。輪轂之曲形表面與頂面的切線之 夾角係介於0度至45度之間。輪轂之曲形表面與底面之夾 角係介於30度至75度之間。曲形表面為一連續或非連續 的曲線。曲形表面之二端點間之連線水平線之間具有一 夾角，夾角係小於70度。 [0009] 基於上述或其他目的，本發明另提出一種風扇，包括 一扇框、一葉輪及一馬達，葉輪係容置於扇框内，馬達 係設置於葉輪内並藉由馬達驅動，葉輪具有一輪轂及複 數個扇葉環設於輪轂之周緣，輪轂具有一導流結構設 置於其周緣外側且具有至少一曲形表面。其中導流結構 係與輪轂是一體成型之結構。其中扇框更包括一連接件 設置於扇框與底座之間。連接件與底座及扇框為一體成 形之結構。連接件包括複數個肋條或靜葉。 096111219 表單編號A0101 第4頁/共11頁 0993099858-0 1328080 [0010] [0011] [0012] [0013] [0014] [0015] 承上所述，本發明利用設置於輪轂之導流結構，使風扇 的流道縮小以使氣流產生撥壓，因此，可使氣流的流速 改變。與習知技術相較，本發明可增加氣流的流速， 進而提高風扇的風量及風，如此一來，可改善風扇的性 能表現。。 【實施方式】 【圖式簡單說明】 第一圖為一種習知之風扇的剖面圖； 第二圖為依據本發明較佳實施例之一種風扇的剖面圖； 以及 第三圖為本發明風扇及習知風扇之風量與風壓的關係曲 線比較圖。 【元件標號說明】 1 ' 2 風扇 121 、 301 輪轂 10、20 扇框 122 、 302 扇葉 11、40 馬達 204 連接件 12、30 葉輪 303 導流結構 101 ' 21 入風口 311 頂面 102、22 出風口 312 底面 103 、 201 殼體 Dl ' D2 外徑 104 、 202 底座 D3 内徑 105 肋條 HI、H3 面度 108 第一導角 ΘΙ ' Θ2 切線夾角 表單編號A0101 第5頁/共11頁 0993099858-0 096111219 1328080 096111219 109 第二導角 03 水平線夾角 【主要元件符號說明】 表單編號A0101 第6頁/共11頁 0993099858-0BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fan and an impeller thereof, and more particularly to a fan and an impeller thereof capable of improving performance. [Prior Art] The working efficiency of the fan is based on the wind pressure and air volume that the fan can generate. It is one of the methods to increase the wind pressure and air volume, change the installation angle of the blade or increase the speed of the fan. However, after increasing the fan speed or changing the mounting angle of the blades, the noise increases. The first figure is a cross-sectional view of a conventional fan. The conventional fan 1 includes a frame 10, a motor 11 and an impeller 12. The fan frame 10 includes a housing 103, a base 104, and at least one rib 105 connecting the housing 103 and the base 104. The fan frame 10 has an air inlet 101 and an air outlet 102. The base 104 is disposed at the air outlet 102. The housing 103 has a first lead angle 108 and a second lead angle 109 at the air inlet 101 and the air outlet 102, respectively. The first guiding angle 108 and the second guiding angle 109 are designed as a bevel to introduce and discharge the auxiliary airflow. [0004] 096111219 The impeller 12 includes a hub 121 and a plurality of blades 122 disposed around the circumference of the hub 121. However, since the space inside the frame 10 is insufficient, the rim 121 is designed to be vertical. When the airflow is introduced from the air inlet 101, since the hub 121 has a vertical structure, the airflow is directly led out from the air outlet 102 via the second guide 109, that is, the effect of the airflow pressurization is not significant, so that Knowing that fan 1 does not perform well in terms of characteristics. Therefore, how to provide a fan and its fan frame can improve the fan form number A0101 page 3 / 11 page 0993099858-0 [0005] 1328080 wind pressure and air volume, thereby improving the performance of the fan, is an important issue one. SUMMARY OF THE INVENTION [0006] In view of the above problems, an object of the present invention is to provide an impeller which can increase the wind pressure and air volume of a fan. Another object of the present invention is to provide a fan which reduces the flow path to squeeze the air flow by the flow guiding structure provided on the hub, and thereby increases the air volume and the wind pressure of the fan. In view of the above or other objects, the present invention provides an impeller comprising a hub and a plurality of blades, the hub having at least one curved surface and a plurality of blade loops disposed on a periphery of the hub. The ratio of the outer diameter of the top surface of the hub to the outer diameter of the bottom surface is less than 0.55. The angle between the curved surface of the hub and the tangent to the top surface is between 0 and 45 degrees. The angle between the curved surface of the hub and the bottom surface is between 30 and 75 degrees. The curved surface is a continuous or discontinuous curve. There is an angle between the horizontal lines connecting the two ends of the curved surface, and the angle is less than 70 degrees. [0009] Based on the above or other objects, the present invention further provides a fan comprising a frame, an impeller and a motor. The impeller is housed in a fan frame, the motor is disposed in the impeller and driven by a motor, and the impeller has A hub and a plurality of blade rings are disposed on a periphery of the hub, and the hub has a flow guiding structure disposed outside the periphery thereof and having at least one curved surface. The flow guiding structure and the hub are integrally formed. The fan frame further includes a connecting member disposed between the fan frame and the base. The connecting member is integrally formed with the base and the fan frame. The connector includes a plurality of ribs or vanes. 096111219 Form No. A0101 Page 4 of 11 0993099858-0 1328080 [0010] [0015] [0015] As described above, the present invention utilizes a flow guiding structure disposed on the hub to enable The flow path of the fan is shrunk to cause the air flow to generate a pressure, and therefore, the flow rate of the air flow can be changed. Compared with the prior art, the present invention can increase the flow rate of the airflow, thereby increasing the air volume and wind of the fan, thereby improving the performance of the fan. . [Embodiment] [Simplified description of the drawings] The first figure is a cross-sectional view of a conventional fan; the second figure is a sectional view of a fan according to a preferred embodiment of the present invention; and the third figure is a fan and a haul of the present invention. A comparison chart showing the relationship between the air volume of the fan and the wind pressure. [Description of component numbers] 1 ' 2 Fan 121, 301 Hub 10, 20 Sector frame 122, 302 Blades 11, 40 Motor 204 Connector 12, 30 Impeller 303 Guide structure 101 ' 21 Air inlet 311 Top surfaces 102, 22 Tuyere 312 bottom surface 103, 201 housing Dl ' D2 outer diameter 104, 202 base D3 inner diameter 105 rib HI, H3 face degree 108 first guide angle ΘΙ ' Θ 2 tangential angle form number A0101 page 5 / 11 pages 0993099858-0 096111219 1328080 096111219 109 Second lead angle 03 Horizontal line angle [Main component symbol description] Form No. A0101 Page 6 of 11 0993099858-0

Claims (1)

1328080 七、申請專利範圍： 1 ·—種葉輪，適用於一風扇，包括：一輪轂，具有至少一 曲形表面，該曲形表面之二端點間之連線與水平線之間 具有一夾角，該夾角係小於70度；以及複數個扇葉，環 設於該輪轂之周緣。 2. 如申請專利範圍第i項所述之葉輪，其中該輪穀具有一頂 面及-底面’該輪穀之外徑係自該頂面朝該底面遞增。 3. 如申請專利範圍第2項所述之葉輪，其中該輪穀之頂面外 經與該底面的外徑之比例小於〇. 45。 4. 如申請專利範圍第2項所述之葉輪，其中該輪穀之曲形表 面與該頂面的切線夾角係介於〇度至Μ度之間。 5·如申請專利範圍第2項所述之葉輪，/中該輪較之曲形表 面與該底面的夾角係介於3〇度至75度之間。 6.如申請專利範圍第！項所述之葉輪，其中該輪敎之曲形表 面為一連續或非連續的曲線。 7 種風扇，包括：-扇框；-葉輪，容置於該扇框内， 該葉輪包括-輪較及複數個扇葉環設於該輪轂之周緣 ’其中該輪轂具有_導流結構設置於其騎外側且具有 至少-曲形表面，肖曲形表面之二端關之連線與水 平線之間具有一夹角，該夹角係小於70度；以及_馬 達’係設置於該葉輪内’且該葉輪係藉由該馬達驅動。 •如申請專利範圍第7項所述之風扇，其中該導流結構係與 該輪轂是一體成型之結構。 I如申請專利範圍第7項所述之風扇，其中該輪毅包括有一 頂面及一底面，且該輪穀之外徑係自該頂面朝該底面遞增 096111219 表單編號Α0ΗΙ1 第7頁/共I]頁 0993099858-0 1328080 10 .如申請專利範圍第7項所述之風扇，其中該輪轂之頂面 外徑與該輪轂之底面外徑之比例係小於0.45。 11 .如申請專利範圍第7項所述之風扇，其中該輪轂之頂面外 徑與扇框之内徑之比例係小於0. 35。 12 .如申請專利範圍第9項所述之風扇，其中該導流結構與該 輪轂頂面的切線夾角係介於0度至45度之間。 13 .如申請專利範圍第9項所述之風扇，其中該導流結構與該 輪轂底面的夾角係介於30度至75度之間。 14 .如申請專利範圍第7項所述之風扇，其中該輪轂之高度與 該扇框之高度比例係大於0. 6。. 15 .如申請專利範圍第7項所述之風扇，其中該曲形表面為一 連續或非連續的曲線。 16 .如申請專利範圍第7項所述之風扇，其中該扇框更包括一 連接件，係設置於該扇框與該底座之間。 17 .如申請專利範圍第16項所述之風扇，其中該連接件與該 底座及該扇框為一體成形之結構。 18 .如申請專利範圍第16項所述之風扇，其中該連接件包括 複數個肋條或靜葉。 096111219 表單编號A0101 第8頁/共11頁 0993099858-01328080 VII. Patent application scope: 1 · An impeller, suitable for a fan, comprising: a hub having at least one curved surface, the connecting line between the two end points of the curved surface having an angle with the horizontal line, The angle is less than 70 degrees; and a plurality of blades are disposed on the circumference of the hub. 2. The impeller of claim i, wherein the trough has a top surface and a bottom surface. The outer diameter of the trough is increased from the top surface toward the bottom surface. 3. The impeller according to claim 2, wherein the ratio of the outer surface of the trough to the outer diameter of the bottom surface is less than 〇.45. 4. The impeller of claim 2, wherein the angle between the curved surface of the trough and the tangent of the top surface is between a twist and a twist. 5. The impeller according to item 2 of the patent application, wherein the angle between the curved surface of the wheel and the bottom surface is between 3 degrees and 75 degrees. 6. If you apply for a patent range! The impeller of the item, wherein the curved surface of the rim is a continuous or non-continuous curve. 7 kinds of fans, including: - a fan frame; - an impeller, is accommodated in the fan frame, the impeller includes a wheel and a plurality of blade rings are disposed at a periphery of the hub, wherein the hub has a _ diversion structure disposed at It rides on the outside and has at least a curved surface. The line connecting the two ends of the curved surface has an angle with the horizontal line, the angle is less than 70 degrees; and the motor is disposed in the impeller. And the impeller is driven by the motor. The fan of claim 7, wherein the flow guiding structure is integrally formed with the hub. The fan of claim 7, wherein the wheel includes a top surface and a bottom surface, and an outer diameter of the wheel valley is increased from the top surface toward the bottom surface by 096111219. Form number Α0ΗΙ1 page 7 / total The fan of claim 7, wherein the ratio of the outer diameter of the top surface of the hub to the outer diameter of the bottom surface of the hub is less than 0.45. The ratio of the outer diameter of the outer surface of the hub to the inner diameter of the fan frame is less than 0.35. 12. The fan of claim 9, wherein the flow guiding structure and the tangential angle of the top surface of the hub are between 0 and 45 degrees. The fan of claim 9, wherein the angle between the flow guiding structure and the bottom surface of the hub is between 30 degrees and 75 degrees. I. The ratio of the height of the hub to the height of the frame is greater than 0.6. 15. The fan of claim 7, wherein the curved surface is a continuous or discontinuous curve. The fan of claim 7, wherein the fan frame further comprises a connecting member disposed between the fan frame and the base. 17. The fan of claim 16, wherein the connector is integrally formed with the base and the frame. 18. The fan of claim 16, wherein the connector comprises a plurality of ribs or vanes. 096111219 Form No. A0101 Page 8 of 11 0993099858-0
TW096111219A 2007-03-30 2007-03-30 Fan and impeller thereof TWI328080B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
TW096111219A TWI328080B (en) 2007-03-30 2007-03-30 Fan and impeller thereof
US12/028,648 US20080240921A1 (en) 2007-03-30 2008-02-08 Fan and impeller thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW096111219A TWI328080B (en) 2007-03-30 2007-03-30 Fan and impeller thereof

Publications (2)

Publication Number Publication Date
TW200839100A TW200839100A (en) 2008-10-01
TWI328080B true TWI328080B (en) 2010-08-01

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CN104214139B (en) * 2013-05-30 2016-12-28 台达电子工业股份有限公司 fan
CN110630538A (en) 2018-06-25 2019-12-31 台达电子工业股份有限公司 fan
CN114738315A (en) * 2018-11-28 2022-07-12 台达电子工业股份有限公司 Fan impeller
WO2025118954A1 (en) * 2023-12-08 2025-06-12 深圳市几素科技有限公司 Portable fan

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US20080240921A1 (en) 2008-10-02

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