M434242 _ 101年.06月01日按正_頁 五、新型說明： 【新型所屬之技術領域】 _1]本創作係有關於-種散熱風扇特別是_種扇葉配置多 種夾角的散熱風扇* [先前技術] [〇〇〇2]電腦晶片在運算時會產生熱能，如行動電話等運算速度 ' 較慢的電子產品尚可以自然對流的方式發散至空氣中， 但現今的電腦晶片之運算速度高其發熱量非自然對流可 • 負荷’因此在電腦機殼内多設置風扇進行強制對流。 [0003] 風扇的選擇需要根據電腦系統結構和散熱需求來評估， 即選擇散熱風扇時需要考慮到系統流場阻抗因素。散熱 風扇的風量與風壓是不可兼顧的，風扇的風量與風壓的 關係與扇葉相對轉軸的轴線的傾斜角度有關。若扇葉相 對轉轴的軸線的傾斜角度大，則風扇的風壓較大 ，但風 量便較小；反之’若扇葉相對轉軸的轴線的傾斜角度小 ’則風扇的風量則較大，但風壓便較小。 鲁 .M434242 _ 101 years. June 01th, according to the positive _ page five, the new description: [New technology field] _1] This creation is related to a kind of cooling fan, especially _ kinds of fan blades with a variety of angles of the cooling fan * [ Prior Art] [〇〇〇2] Computer chips generate heat during calculations, such as mobile phones. The slower electronic products can be naturally convected to the air, but today's computer chips are highly computationally fast. The unnatural convection of the heat can be loaded. Therefore, a fan is placed in the computer casing for forced convection. [0003] The selection of the fan needs to be evaluated according to the structure of the computer system and the heat dissipation requirement, that is, the system flow field impedance factor needs to be considered when selecting the cooling fan. The air volume of the cooling fan and the wind pressure are not compatible. The relationship between the air volume of the fan and the wind pressure is related to the angle of inclination of the blade relative to the axis of the shaft. If the angle of inclination of the blade relative to the axis of the rotating shaft is large, the wind pressure of the fan is large, but the air volume is small; otherwise, if the angle of inclination of the blade relative to the axis of the rotating shaft is small, the air volume of the fan is larger. But the wind pressure will be smaller. Lu .
[0004] 因此在流場阻抗較低的環境下可選擇風量較大的風扇， 在流場阻抗較高的環境下（例如機殼之進風口或出風口上 有加設濾棉或濾網）則，則必需選擇風壓較大的風扇以克 服流場阻抗。由於不同的機殼結構需對應不同的風扇， 谷易造成誤裳不適合的風扇而導致散熱效率不佳，製造 廠商也必需對應不同的機殼結構製作不同規格的風扇而 增加成本。 【新型内容】 1〇酬夢單编號麵1 第3頁/共23頁 1013210322-0 M434242 101:年.06月01日梭正頁 [0005] 本創作之一目的在於提供一種散熱風扇之扇輪，其扇葉 配置多種傾角，因此可適用於多種不同流場阻抗的安裝 環境。 [0006] 為達成上述之目的，本創作提供一種扇輪，包令—軸心 線、垂直軸心線的一徑向線、一第一扇葉及一第二扇葉 ，第一扇葉沿著徑向線延伸，第一扇葉的弦線與軸心線 圍設有一第一夹角，第二扇葉沿著徑向線延伸，第二扇 葉的弦線與轴心線圍設有一第二夾角，第二夾角與第一 夾角為不同角度配設。 < [0007] 較佳地，前述之扇輪更包含一第三扇葉沿著徑向線延伸 ，第三扇葉的弦線與軸心線圍設有一第三夾角，第三夾 角與第二夾角及第一夾角皆為不同角度配設。 ， [0008] 較佳地，前述之扇輪，其第一扇葉沿軸心線之周向平均 配置" [0009] 較佳地，前述之扇輪，其第二扇葉沿軸心線之周向平均 配置。 { [0010] 為達成上述之目的，本創作另提供一種扇輪，其包含一 風扇轂、一第一扇葉及一第二扇葉。風扇毅具有一轴心 線及垂直軸心線的一徑向線。第一扇葉自風扇轂的周緣 沿著徑向線延伸而出，第一扇葉的弦線與風扇轂的軸心 線圍設有一第一夾角。第二扇葉，自風扇轂的周緣沿著 徑向線延伸而出，第二扇葉的弦線與風扇轂的轴心線圍 設有一第二夾角，第二夾角與第一夾角為不同角度配設 〇 10120503#單編號 A〇101 第4頁/共23頁 1013210322-0 M434242 [0011] loi年06月01日核正 較佳地，前述之扇輪，其第一扇葉及第二扇葉皆一體成 型於風扇穀。 [0012] 較佳地，前述之扇輪，更包含一第三扇葉，自風扇轂的 周緣沿著徑向線延伸而出，第三扇葉的弦線與風扇轂的 轴心線圍設有一第三夾角，第三夾角與第二夾角及第一 夹角皆為不同角度配設。 [0013] 本創作之另一目的在於提供一種散熱風扇，其扇葉配置 多種傾角，因此可適用於多種不同流場阻抗的安裝環境 [0014] 為達成上述之目的，本創作提供一種散熱風扇，其包含 一風扇轂、複數第一扇葉及複數第二扇葉。風扇轂為一 圓筒體，其具有一軸心線及垂直轴心線的一徑向線。第 一扇葉皆自風扇轂的周緣沿著徑向線延伸而出，每一第 一扇葉的弦線與風扇轂的軸心線圍設有一第一夾角。第 二扇葉皆自風扇轂的周緣沿著徑向線延伸而出，每一第 二扇葉的弦線與風扇轂的軸心線圍設有一第二夾角，每 ® —第二夾角與每一第一夾角為不同角度配設。 [0015] 較佳地，前述之散熱風扇，其第一扇葉沿軸心線之周向 平均配置β [0016] 較佳地，前述之散熱風扇，其第二扇葉沿軸心線之周向 平均配置。 [0017] 較佳地，前述之散熱風扇，其第一扇葉及第二扇葉皆一 體成型於風扇轂。 [0018] 較佳地，前述之散熱風扇更包含複數個第三扇葉，皆自 1013210322-0 10120503#單編號Α〇101 第5頁/共23頁 M434242 101年06月01日按正替換頁 風扇毅的周緣沿著徑向線延伸而出，每一第三扇葉的弦 線與風扇毅的轴心線圍設有一第二夾角，每^一第二夾角 與每一第一夾角及每一第二夾角為不同角度配設。 [0019] 較佳地’前述之散熱風扇更包含一外框，風扇穀設於外 框之内侧β [0020] 由於本創作之散熱風扇之扇葉配置多種傾角，因此在不 同的流場阻抗下皆有固定比例的扇葉可發揮最佳工作效 · 率，而使得本創作之散熱風扇可適應各種不同的流場阻 抗。 鲁 【實施方式】 [〇〇21] 參閱第一圖及第二圖，本創作之第一實施例提供一種散 熱風扇，其包含一扇輪、一驅動馬達200、一外框300。 扇輪包含一風扇轂100、複數個第一扇葉411/412/413及 複數個第二扇葉421/422/423。 [0022] 較佳地，風扇轂100為塑膠製成’且其外形為圓筒狀。外 框300為塑膠製成，且其外形為方形，方形内設有一個貫 · 穿的圓形容置空間310。驅動馬達200固定地設置於外框 300上，其位於圓形容置空間310的中心，風扇轂1〇〇套 設於驅動馬達200 ’驅動馬達200用以帶動風扇轂1〇〇沿 一軸心線ΑΧ旋轉。 [0023] 參閱第二圖及第三圖，於本實於例中，扇輪較佳地包含 三個第一扇葉411/412/413，第一扇葉411/412/413 — 體成型於風扇轂上，各第一扇葉411(412/413)自輪 轂100沿轴心線ΑΧ之徑向向外延伸。三個第一扇葉 10120503#單編號 Α0101 第6頁/共23頁 1013210322-0 M434242 10Ϊ年.06月01日修正_頁 411/412/413沿軸心線ΑΧ之周向平均配置，每一個第一 扇葉411(412/41 3)與轴心線ΑΧ之間配置具有一第一夾角 Α1 ’第一夾角Α1較佳地為銳角。 [〇〇24] 於本實於例中，本創作之散熱風扇較佳地包含三個第二 扇葉421/422/423，第二扇葉421/422/423 —體成型於 風扇轂100上，各第二扇葉421(422/423)自風扇轂100 ' 沿軸心線ΑΧ之徑向向外延伸。三個第二扇葉 421/422/423沿軸心線ΑΧ之周向平均配置，每一個第二 • 扇葉421 (422/423)與轴心線ΑΧ之間配置具有一第二夾角 Α2，第二夾角Α2較佳地為銳角。 [0025] 於本實施例中，第一扇葉411/412/413與第二扇葉 421/422/423皆為相同外形，三個第一扇葉 。411/412/413配置具有相同的第一夾角Α1，而三個第二 扇葉421/422/423則配置具有相同的第二夾角Α2，當風 扇穀100旋轉時便會帶動第一扇葉411/412/413及第二扇 葉 421/422/423 旋轉。 [_] 參閱第四圖，各第一扇葉411 (扇葉412、扇葉41 3相同） 之弦線Cl( chord line)方向與軸心線ΑΧ之間爽有第一 夾角A1。參閱第五圖’各第二扇葉421 (扇葉422、扇葉 423相同）之弦線C2(chord 1 ine)方向則與軸心線AX之 。間夾有第二夾角A2。較佳地，第一扇葉之第一夾角Α1* 於第二扇葉之第二夾角A2,當風扇轂100帶動第一扇葉 411/412/413及第二扇葉421/422/423旋轉時，在流場 1013210322-0 阻抗較低的環境中’三個第一扇葉411/412/413便可提 供較大的風量；而在流場阻抗較高的環境中，三個第二 10120503#單編號A010丨 第7頁/共23頁 M434242 [0027] 101年.06月01日修正_頁 扇葉421/422/423便可提供較大的風壓。 參閱第六圖’本創作之第二實施例提供一種散熱風扇， 其包含一扇輪、一驅動馬達200及一外框300。扇輪包含 一風扇轂100、複數個第一扇葉511/512/513、複數個第 二扇葉521 /522/523以及複數邶第三扇葉531/532/533 。其中風扇轂100、驅動馬達200及外框300之構造及相 對關係如同前述第一實施例，於此不再累述。 [0028] 本實施例中，本創作之散熱風扇較佳地包含三個第一扇 葉511/512/513扇葉沿轴心線AX之周向平均配置、三個 第二扇葉521/522/523扇葉沿軸心線AX之周向平均配置 及三個第三扇葉531/532/533扇葉沿軸心線AX之周向平 均配置，第一扇葉511/512/513、第二扇葉 521/522/523及第三扇葉531/532/533較佳地皆為相同 外形，且一體成形於風扇轂100上，自風扇轂100沿軸心 線AX之徑向向外延伸〇各第一扇葉511(512/513)之弦線 Cl (chord line，扇葉前後緣在剖面上的連線）方向與軸 心線AX之間夾有相同的一第一夾角A1(如同第四圖），各 第二扇葉521 (522/523)之弦線C2方向與軸心線AX之間 夾有相同的第二夾角A2(如同第五圖）。參閱第七圖，各 第三扇葉531 (532/533)之弦線C3方向與軸心線AX之間 則夾有相同的第三夾角A3。前述之第一失角A1、第二夾 角A2及第二夾角A3相互皆不相同，於本實施例中，較佳 地由小至大依序為第一夾角A1、第三夾角A3、第二夾角 k2。 [0029] 參閱第八圖，本創作之第三實施例提供一種散熱風扇， 10120503#單編號 A0101 第8頁/共23頁 1013210322-0 M434242 101年.06月01日接正_頁 其包含一扇輪、一驅動馬達200、一外框300。扇輪包含 一風扇轂100、三個第一扇葉611/61 2/613、六個第二扇 葉621/622/623/624/625/626及三個第三扇葉 631/632/633。其中風扇轂100、驅動馬達200及外框 300之構造及相對關係如同前述第一實施例’於此不再累 [0030] 各第一扇葉611(61 2/613)之弦線C1方向與軸心線AX之 間夾有相同的一第一夾角A1(如同第四圖）；各第二扇葉[0004] Therefore, in a low flow field impedance environment, a fan with a large air volume can be selected, and in a high flow field impedance environment (for example, a filter cotton or a filter screen is added to the air inlet or the air outlet of the casing) Then, it is necessary to select a fan with a large wind pressure to overcome the flow field impedance. Since different chassis structures need to correspond to different fans, and the fan is not suitable for fans, the heat dissipation efficiency is not good, and the manufacturer must also manufacture fans of different specifications according to different casing structures to increase the cost. [New Content] 1 梦 梦 梦 单 单 单 1 1 1 / 23 2313213222-0 M434242 101: Year. June 01 shuttle page [0005] One of the purposes of this creation is to provide a fan of a cooling fan The wheel has a variety of inclination angles, so it can be applied to a variety of installation environments with different flow field impedances. [0006] In order to achieve the above object, the present invention provides a fan wheel, a package-axis line, a radial line of a vertical axis line, a first blade and a second blade, the first blade edge The radial line extends, the first blade has a first angle with the axis line, the second blade extends along the radial line, and the second blade has a string and a shaft line. The second angle, the second angle is different from the first angle. < [0007] Preferably, the foregoing fan wheel further includes a third blade extending along a radial line, and the chord line of the third blade and the axis line are provided with a third angle, the third angle and the third The two angles and the first angle are all arranged at different angles. [0008] Preferably, the aforementioned fan wheel has a first fan blade along the circumferential direction of the axis line. [0009] Preferably, the aforementioned fan wheel has a second blade along the axis line. The circumferential average configuration. [0010] In order to achieve the above object, the present invention further provides a fan wheel including a fan hub, a first blade and a second blade. The fan has a radial line of an axis and a vertical axis. The first blade extends from the periphery of the fan hub along a radial line, and the chord of the first blade and the axial center of the fan hub define a first angle. The second blade extends from the peripheral edge of the fan hub along a radial line, and the second blade has a second angle with the axis of the fan hub, and the second angle is different from the first angle. 〇10120503#单号A〇101 Page 4/Total 23 page 1013210322-0 M434242 [0011] On June 01, loi year, the first fan blade, the first fan blade and the second fan The leaves are all formed in the fan valley. [0012] Preferably, the foregoing fan wheel further includes a third blade extending from a circumference of the fan hub along a radial line, and the string of the third blade and the axis line of the fan hub are surrounded. There is a third angle, and the third angle is matched with the second angle and the first angle. [0013] Another object of the present invention is to provide a heat dissipating fan whose fan blades are arranged with various inclination angles, and thus can be applied to a plurality of different flow field impedance installation environments. [0014] In order to achieve the above object, the present invention provides a cooling fan. It comprises a fan hub, a plurality of first blades and a plurality of second blades. The fan hub is a cylindrical body having a radial line of an axial line and a vertical axis. The first blade extends from the circumference of the fan hub along a radial line, and the chord of each first blade and the axis of the fan hub are surrounded by a first angle. The second blade extends from the circumference of the fan hub along a radial line, and each of the second blade has a second angle with the axis of the fan hub, and each of the second angle and the second angle A first angle is assigned at different angles. [0015] Preferably, in the foregoing cooling fan, the first blade is uniformly arranged along the circumferential direction of the axial line. [0016] Preferably, the aforementioned cooling fan has a second blade along the circumference of the axial line. Configure to average. [0017] Preferably, in the foregoing cooling fan, the first blade and the second blade are integrally formed on the fan hub. [0018] Preferably, the foregoing cooling fan further comprises a plurality of third blades, all from 1013210322-0 10120503# single number Α〇101 5th page/total 23 pages M434242 101 June 01, according to the replacement page The circumference of the fan is extended along the radial line, and the string of each third blade and the axis of the fan are surrounded by a second angle, each second angle and each first angle and each A second angle is provided at different angles. [0019] Preferably, the foregoing heat-dissipating fan further includes an outer frame, and the fan valley is disposed on the inner side of the outer frame. [0020] Since the blade of the cooling fan of the present invention is configured with various inclination angles, under different flow field impedances All of them have a fixed proportion of blades to achieve the best work efficiency, so that the creation of the cooling fan can adapt to a variety of different flow field impedance. [Embodiment] [〇〇21] Referring to the first and second figures, a first embodiment of the present invention provides a heat dissipating fan including a fan wheel, a driving motor 200, and an outer frame 300. The fan wheel includes a fan hub 100, a plurality of first blades 411/412/413, and a plurality of second blades 421/422/423. [0022] Preferably, the fan hub 100 is made of plastic and has a cylindrical shape. The outer frame 300 is made of plastic and has a square shape, and a circular accommodating space 310 is provided in the square. The driving motor 200 is fixedly disposed on the outer frame 300 at the center of the circular receiving space 310. The fan hub 1 is sleeved on the driving motor 200' to drive the motor 200 to drive the fan hub 1 along an axis line. ΑΧ Rotate. [0023] Referring to the second and third figures, in the present embodiment, the fan wheel preferably includes three first blades 411/412/413, and the first blade 411/412/413 is formed in the body. On the fan hub, each of the first blades 411 (412/413) extends radially outward from the hub 100 along the axis of the hub. Three first blades 10120503#单号Α0101 Page 6/Total 23 pages 1013210322-0 M434242 10Ϊ年.06月01日修正_Page 411/412/413 along the axis line ΑΧ of the circumferential average configuration, each one The first blade 411 (412/41 3) is disposed between the axis and the axis with a first angle Α 1 '. The first angle Α 1 is preferably an acute angle. [24] In the present embodiment, the heat dissipation fan of the present invention preferably includes three second blades 421/422/423, and the second blades 421/422/423 are integrally formed on the fan hub 100. Each of the second blades 421 (422/423) extends radially outward from the fan hub 100' along the axis of the shaft. The three second blades 421/422/423 are arranged along the circumferential direction of the axis ΑΧ, and each of the second blades 421 (422/423) and the axis ΑΧ is disposed with a second angle Α2, The second angle Α 2 is preferably an acute angle. [0025] In this embodiment, the first blade 411/412/413 and the second blade 421/422/423 have the same outer shape and three first blades. The 411/412/413 configuration has the same first angle Α1, and the three second blades 421/422/423 are configured to have the same second angle Α2, which will drive the first blade 411 when the fan valley 100 rotates. /412/413 and the second blade 421/422/423 rotate. [_] Referring to the fourth figure, the first fan blade 411 (the fan blade 412 and the fan blade 41 3 are the same) has a first angle A1 between the chord line direction and the axis line ΑΧ. Referring to the fifth figure, the chord 1 ine direction of each of the second blades 421 (the fan blades 422 and the fan blades 423 are the same) is the axis AX. There is a second angle A2 between the clips. Preferably, the first angle Α1* of the first blade is at the second angle A2 of the second blade, and the fan hub 100 drives the first blade 411/412/413 and the second blade 421/422/423 to rotate. When the flow field 1013210322-0 has a low impedance environment, the three first blades 411/412/413 can provide a larger air volume; and in the environment with a higher flow field impedance, the third second 10120503 #单编号A010丨第7页/Total 23 pages M434242 [0027] 101 years. June 01 revision _ page fan blades 421/422/423 can provide greater wind pressure. Referring to the sixth embodiment, a second embodiment of the present invention provides a heat dissipation fan including a fan wheel, a drive motor 200, and an outer frame 300. The fan wheel includes a fan hub 100, a plurality of first blades 511/512/513, a plurality of second blades 521 / 522 / 523, and a plurality of third blades 531 / 532 / 533. The configuration and the relative relationship between the fan hub 100, the drive motor 200 and the outer frame 300 are the same as those of the first embodiment described above, and will not be described herein. [0028] In this embodiment, the heat dissipation fan of the present invention preferably includes three circumferentially average configurations of three first blades 511/512/513 blades along the axis AX, and three second blades 521/522. /523 The average circumferential configuration of the fan blade along the axis AX and the circumferential distribution of the three third blade 531/532/533 blades along the axis AX, the first blade 511/512/513, the first The two blades 521/522/523 and the third blades 531/532/533 are preferably all of the same shape and integrally formed on the fan hub 100, extending radially outward from the fan hub 100 along the axis AX.弦 The first blade 511 (512/513) of the chord line Cl (chord line, the front and rear edges of the blade in the cross section) direction and the axis AX between the same first angle A1 (like Fourth figure), the second angle θ2 of the second blade 521 (522/523) and the axis AX are sandwiched by the same second angle A2 (as in the fifth figure). Referring to the seventh figure, the third angle A3 of the third blade 531 (532/533) and the axis AX are sandwiched by the same third angle A3. The first missing angle A1, the second angle A2, and the second angle A3 are different from each other. In this embodiment, preferably, the first angle A1, the third angle A3, and the second are sequentially changed from small to large. Angle k2. [0029] Referring to the eighth figure, a third embodiment of the present invention provides a cooling fan, 10120503# single number A0101, page 8 of 23, 1013210322-0, M434242, 101.06, 01, and _page, including one A fan wheel, a drive motor 200, and an outer frame 300. The fan wheel comprises a fan hub 100, three first blades 611/61 2/613, six second blades 621/622/623/624/625/626 and three third blades 631/632/633 . The structure and the relative relationship between the fan hub 100, the drive motor 200 and the outer frame 300 are the same as those of the first embodiment described above. [0030] The direction of the string C1 of each first blade 611 (61 2/613) is The same first angle A1 is sandwiched between the axial lines AX (as in the fourth figure); each second leaf
| 621 (622/623/624/625/626)之弦線C2 方向與軸心線AX 之間夹有相同的另一個第二夹角A2(如同第五圖）。而各 第三扇葉631 (632/633)之弦線C3方向與軸心線AX之間 夾有相同的第三夾角A3 (如同第七圖）。 [0031] 於本實施例中，第一扇葉611/612/613、第二扇葉 621/622/623/624/625/626及第三扇葉631/632/633 ，皆為相同外形，且較佳地一體成形於風扇轂100上，自 風扇轂100沿軸心線AX之徑向向外延伸，第一夾角A1、第 p 二夾角A2及第三夾角A3相互皆不相同，較佳地由小至大 依序為第一夾角A1、第三夾角A3、第二夾角A2 » [0032] 參閱第九圖，本創作第四實施例提供一種散熱風扇，其 包Ί—扇輪、一驅動馬達200及一外框300。扇輪包含三 個第一扇葉711/712/713、三個第二扇葉721/722/723 及一連結件701。 [0033] 各第一扇葉Ή 1(71 2/713)之弦線C1方向與軸心線AX之 間夹有相同的一第一夾角A1 (如同第四圖）；各第二扇葉 721 (722/723)之弦線C2方向與軸心線AX之間夾有相同 10120503#單編號 A〇101 第 9 頁 / 共 23 頁 1013210322-0 M434242 101年.06月01日梭正脊換頁 的另一個第二夾角A2(如同第五圖）。 [0034] 於本實施例中，第一扇葉711/71 2/713、第二扇葉 721/722/723，皆為相同外形，自軸心線AX沿軸心線AX 之徑向向外延伸，並且外端以一連結件701相連，第一夹 角A1及第二夾角A2相互不相同，較佳地第一夾角A1小於 第二夾角A2。 [0035] 本創作之散熱風扇其扇輪旋轉時，扇輪之各扇葉可提供 ‘ 不同的風量及風壓，因此無論安裝環境的流場阻抗值為 何，皆可確保部分扇葉可達最佳之工作效率，而彌補其 ® 餘扇葉之工作效率，因此本創作之散熱風扇可適用於各 種不同流場阻抗的機箱。 [0036] 以上所述僅為本創作之較佳實施例，非用以限定本創作 之專利範圍，其他運用本創作之專利精神之等效變化， 均應倶屬本創作之專利範圍。 【圖式簡單說明】 [0037] 第一圖係本創作第一實施例之散熱風扇之立體外觀示意 · 圖。 [0038] 第二圖係本創作第一實施例之散熱風扇之立體分解圖。 [0039] 第三圖係本創作第一實施例之扇輪之扇葉配置圖。 [0040] 第四圖係本創作第一實施例之扇輪之第一扇葉側視圖。 [0041] 第五圖係本創作第一實施例之扇輪之第二扇葉側視圖。 [0042] 第六圖係本創作第二實施例之扇輪之扇葉配置圖。 [0043] 第七圖係本創作第二實施例之扇輪之第三扇葉側視圖。 1013210322-0 單編號 A0101 第 10 頁 / 共 23 頁 M434242 • 101:年.06月01日按正齊^頁 咖]第人@係本創作第三實施例之扇輪之扇葉配置圖。 [0045]第九圖係本創作第四實施例之扇輪之扇葉配置圖。 【主要元件符號說明】 [〇〇46] AX軸心線 A1第一夾角 A2第二夾角 A3第三夾角 C1/C2/C3 弦線 _ 100風扇轂 2 0 0驅動馬達 300外框 31 0容置空間 411/412/413 第一扇葉 511/512/513 第一扇葉 。 611/612/613 第一扇葉 711/712/713 第一扇葉 ® 421/422/423 第二扇葉 521/522/523 第二扇葉 621/622/623 第二扇葉 624/625/626 第二扇葉 721/722/723 第二扇葉 531/532/533第三扇葉 631/632/633第三扇葉 701連結件 10120503#單编號 A〇101 第11頁/共23頁 1013210322-0| 621 (622/623/624/625/626) The C2 direction of the string is the same as the other second angle A2 between the axis AX (as in the fifth figure). The third blade 631 (632/633) has a same third angle A3 (like the seventh figure) between the C3 direction and the axis AX. [0031] In this embodiment, the first blade 611/612/613, the second blade 621/622/623/624/625/626, and the third blade 631/632/633 are all in the same shape. Preferably, the fan hub 100 is integrally formed on the fan hub 100, and extends radially outward from the fan hub 100 along the axis AX. The first angle A1, the second angle A2, and the third angle A3 are different from each other. The first angle An1, the third angle A3, and the second angle A2 are sequentially arranged from small to large. [0032] Referring to the ninth embodiment, the fourth embodiment of the present invention provides a heat dissipation fan, which includes a fan wheel and a fan wheel. The motor 200 and an outer frame 300 are driven. The fan wheel includes three first blades 711/712/713, three second blades 721/722/723, and a link 701. [0033] Each of the first blade Ή 1 (71 2/713) has a same first angle A1 (like the fourth figure) between the chord line C1 direction and the axis line AX; each second leaf 721 (722/723) The string C2 direction is the same as the axis line AX. 10120503#单号A〇101 Page 9 of 23 1013210322-0 M434242 101.06.01 The other second angle A2 (like the fifth figure). [0034] In this embodiment, the first blade 711/71 2/713 and the second blade 721/722/723 are all in the same shape, and the radial axis AX is radially outward along the axis AX. The first angle An and the second angle A2 are different from each other. Preferably, the first angle A1 is smaller than the second angle A2. [0035] When the fan of the present invention rotates the fan wheel, the blades of the fan wheel can provide different wind volume and wind pressure, so that the fan blade can reach the most regardless of the flow field impedance value of the installation environment. The efficiency of the work, while making up for the efficiency of its remaining fan blades, so the creation of the cooling fan can be applied to a variety of different flow field impedance chassis. The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the patent of the present invention, and other equivalent changes in the patent spirit of the present invention are all within the scope of the patent of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS [0037] The first figure is a three-dimensional appearance of the heat dissipation fan of the first embodiment of the present invention. [0038] The second drawing is an exploded perspective view of the heat dissipation fan of the first embodiment of the present invention. [0039] The third figure is a blade configuration diagram of the fan wheel of the first embodiment of the present invention. [0040] The fourth figure is a side view of the first blade of the fan wheel of the first embodiment of the present invention. [0041] The fifth figure is a side view of the second blade of the fan wheel of the first embodiment of the present invention. [0042] The sixth figure is a blade configuration diagram of the fan wheel of the second embodiment of the present invention. [0043] The seventh figure is a third blade side view of the fan wheel of the second embodiment of the present invention. 1013210322-0 Single No. A0101 Page 10 / Total 23 pages M434242 • 101: Year. June 01, press the same page ^page] The first person @ is the fan blade configuration diagram of the third embodiment of this creation. [0045] The ninth drawing is a fan blade arrangement diagram of the fan wheel of the fourth embodiment of the present invention. [Main component symbol description] [〇〇46] AX axis line A1 first angle A2 second angle A3 third angle C1/C2/C3 string _ 100 fan hub 2 0 0 drive motor 300 frame 31 0 housing Space 411/412/413 First leaf 511/512/513 First leaf. 611/612/613 First leaf 711/712/713 First blade® 421/422/423 Second blade 521/522/523 Second blade 621/622/623 Second blade 624/625/ 626 Second leaf 721/722/723 Second blade 531/532/533 Third blade 631/632/633 Third blade 701 Link 10120503# Single number A〇101 Page 11 of 23 1013210322-0