TWI534357B - Heat dissipation fan - Google Patents
Heat dissipation fan Download PDFInfo
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- TWI534357B TWI534357B TW101111954A TW101111954A TWI534357B TW I534357 B TWI534357 B TW I534357B TW 101111954 A TW101111954 A TW 101111954A TW 101111954 A TW101111954 A TW 101111954A TW I534357 B TWI534357 B TW I534357B
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Description
本發明係有關於一種散熱風扇，特別係有關於一種可有效提升旋轉穩定性之散熱風扇。
The invention relates to a heat dissipation fan, in particular to a heat dissipation fan which can effectively improve the stability of rotation.
請參閱第7圖所示，習知一種散熱風扇200，係包含一基座210、一扇輪220、一上蓋230、一定子240及一軸承250，該軸承250係設置於該基座210，該扇輪220係具有複數個扇葉221及一軸桿222，該軸桿222係樞設於該軸承250，該扇輪220可被該定子240驅動，請參閱第8圖所示，該散熱風扇200係被倒掛使用，該扇輪220係會受地心引力影響而向下位移，當該扇輪220被驅動旋轉，該扇輪220係會發生晃動，導致該散熱風扇200產生噪音或造成該軸桿222與該軸承250不當摩擦，因此降低該散熱風扇100之散熱功效及旋轉穩定性。
As shown in FIG. 7 , a heat dissipation fan 200 includes a base 210 , a fan wheel 220 , an upper cover 230 , a stator 240 , and a bearing 250 . The bearing 250 is disposed on the base 210 . The fan wheel 220 has a plurality of blades 221 and a shaft 222. The shaft 222 is pivotally mounted on the bearing 250. The fan wheel 220 can be driven by the stator 240. Please refer to FIG. The 200 series is used upside down. The fan wheel 220 is downwardly displaced by the gravitational force. When the fan wheel 220 is driven to rotate, the fan wheel 220 may sway, causing the cooling fan 200 to generate noise or cause the noise. The shaft 222 improperly rubs against the bearing 250, thereby reducing the heat dissipation efficiency and rotational stability of the heat dissipation fan 100.
本發明之主要目的係在於提供一種散熱風扇，其係包含一框體及一扇輪，該框體係包含一基座，該扇輪係設置於該基座，該扇輪係具有複數個第一葉片、複數個第二葉片及複數個翼形肋，各該翼形肋係具有一吸入面及一受壓面，該吸入面及該受壓面係為互不對稱之曲面，該些第一葉片與該些第二葉片係互為間隔排列，該翼形肋係連接該第一葉片及該第二葉片，且該些翼形肋係構成一翼形環，該散熱風扇之該扇輪驅動旋轉時，空氣會於各該翼形肋之該受壓面與該吸入面產生氣流壓力差，其中，該受壓面之氣流壓力係大於該吸入面之氣流壓力，本發明係藉由該氣流壓力差使該扇輪受到一朝向該基座方向的氣流壓力，故可避免該扇輪與該基座之間的間隙過大而於轉動時發生晃動，以增加該散熱風扇之旋轉穩定性，並防止該扇輪脫落。
The main purpose of the present invention is to provide a heat dissipating fan, which comprises a frame body and a fan wheel. The frame system comprises a base, the fan wheel system is disposed on the base, and the fan wheel system has a plurality of first a blade, a plurality of second blades and a plurality of wing ribs each having a suction surface and a pressure receiving surface, wherein the suction surface and the pressure surface are mutually asymmetrical curved surfaces, and the first The blade is spaced apart from the second blade system, the wing rib is connected to the first blade and the second blade, and the wing ribs form a wing ring, and the fan wheel of the cooling fan drives rotation The air generates a pressure difference between the pressure receiving surface of each of the wing ribs and the suction surface, wherein the pressure of the pressure surface of the pressure receiving surface is greater than the pressure of the air flow of the suction surface, and the present invention is based on the pressure of the air flow. The difference is caused by the airflow pressure of the fan wheel in the direction of the base, so that the gap between the fan wheel and the base is prevented from being excessively large and shakes during rotation, thereby increasing the rotational stability of the cooling fan and preventing the rotation. The fan wheel is detached.
請參閱第1、2及3圖，其係本發明之一較佳實施例，一種散熱風扇100包含一框體110及一扇輪120，其中該框體110係包含一基座111及一蓋板112，該扇輪120係設置於該基座111與該蓋板112之間，該蓋板112係罩蓋該扇輪120，該扇輪120係具有複數個第一葉片121、複數個第二葉片122及複數個翼形肋126，該些第一葉片121與該些第二葉片122係互為間隔排列，該翼形肋126係連接該第一葉片121及該第二葉片122，該些翼形肋126係構成一翼形環，該翼形環係可增加該些第一葉片121及該些第二葉片122之剛性，請參閱第5圖，各該翼形肋126係具有一受壓面S1(pressure surface)及一吸入面S2(suction surface)，該受壓面S1與該吸入面S2係為一曲面，此外，該翼形肋126之該受壓面S1與該吸入面S2係因彼此不對稱之曲面設計，而使該翼形肋126產生一拱形曲面(camber)，各該第二葉片122係具有一頂緣123及一底緣124，各該翼形肋126係位於該頂緣123與該底緣124之間，各該翼形肋126係具有一前翼緣127及一相對於該前翼緣127之後翼緣128，在本實施例中，該前翼緣127係相對靠近該扇輪120，而該後翼緣128係相對遠離該扇輪120，該頂緣123與該前翼緣127之間係具有一第一間距D1，該頂緣123與該後翼緣128之間係具有一第二間距D2，該第一間距D1係大於該第二間距D2，該前翼緣127及該後翼緣128之間係定義有一弦線L1，該弦線L1與一平行於該基座111之水平線L2之間係形成有一夾角α，在本實施例中，該夾角α係介於1至16度之間，該頂緣123與該底緣124之間係具有一高度H，該第一間距D1係不大於該高度H的二分之ㄧ，或者，在另一實施例中，該第二間距D2係不大於該高度H的二分之ㄧ，當該散熱風扇100之該扇輪120被驅動而旋轉時，空氣會以不同的速度流過各該翼形肋126之該受壓面S1與該吸入面S2，其中，空氣流過該受壓面S1之速度係小於流過該吸入面S2之速度，以致於該受壓面S1之氣流壓力大於該吸入面S2之氣流壓力，使得該受壓面S1與該吸入面S2產生一氣流壓力差，較佳地，當該夾角α之角度為4度時，具有最佳之氣流壓力差，且藉由該氣流壓力差使該扇輪120受到一朝向該基座111方向的氣流壓力，故能避免該扇輪120在旋轉時因離心力的作用而遠離該基座111，並防止該扇輪120與該基座111之間的間隙過大而於旋轉時發生晃動，因此可有效提升該扇輪120之旋轉穩定性。
請再參閱第3及4圖，在本實施例中，該框體110之該蓋板112係具有一本體113及一入風口114，該本體113係遮蔽該些翼形肋126，較佳地，該本體113係遮蔽該些翼形肋126之該些前翼緣127，由於該些翼形肋126被該蓋板112所遮蓋，因此，當該扇輪120轉動而將空氣從該蓋板112之該入風口114導入至該扇輪120時，氣流不會產生逆流及擾流的現象，故可有效降低該散熱風扇100產生的噪音並提升風扇靜壓，此外，請參閱第6圖，其係本發明之第二較佳實施例，第二實施例與第一實施例之差異在於該翼形肋126之該後翼緣128係凸出於該第二葉片122之一側邊125，由於該前翼緣127於徑向上相較於第一實施例之該前翼緣127更遠離該蓋板112之該入風口114，因此從該入風口114導入的空氣能藉由導入該些前翼緣127與該入風口114之間所形成之空間而產生較佳的流場，能有效降低該蓋板112之該入風口114的擾流現象。
當該散熱風扇100之該扇輪120轉動時，空氣會流過各該翼形肋126而使該受壓面S1與該吸入面S2產生氣流壓力差，其中，該受壓面S1之氣流壓力係大於該吸入面S2之氣流壓力，本發明係藉由該氣流壓力差使該扇輪120受到一朝向該基座111方向的氣流壓力，故能避免該扇輪120在旋轉時因離心力的作用而遠離該基座111，並防止該扇輪120與該基座111之間的間隙過大而於轉動時產生晃動，故該些翼形肋126所構成之翼形環，係能增加該些第一葉片121及該些第二葉片122之剛性以及提升該散熱風扇100之旋轉穩定性，尤其當該散熱風扇100被倒掛使用時，該基座111係位於該蓋板112上方，更可有效防止該扇輪120受到地心引力的影響而脫落。
本發明之保護範圍當視後附之申請專利範圍所界定者為準，任何熟知此項技藝者，在不脫離本發明之精神和範圍內所作之任何變化與修改，均屬於本發明之保護範圍。
Referring to the first, second and third embodiments of the present invention, a heat dissipation fan 100 includes a frame 110 and a fan wheel 120. The frame 110 includes a base 111 and a cover. The board 112 is disposed between the base 111 and the cover 112. The cover 112 covers the fan wheel 120. The fan wheel 120 has a plurality of first blades 121 and a plurality of The first blade 121 and the plurality of wing ribs 126 are spaced apart from each other, and the wing rib 126 is connected to the first blade 121 and the second blade 122. The wing-shaped ribs 126 are configured to form a wing-shaped ring, and the wing-shaped ring system can increase the rigidity of the first blade 121 and the second blades 122. Referring to FIG. 5, each of the wing-shaped ribs 126 has a a pressure surface S1 and a suction surface S2, the pressure receiving surface S1 and the suction surface S2 are curved surfaces, and the pressure receiving surface S1 and the suction surface S2 of the wing rib 126 Because of the asymmetrical surface design, the wing rib 126 generates an arched surface, and each of the second blades 122 has a top edge 123 and a bottom. 124, each of the wing ribs 126 is located between the top edge 123 and the bottom edge 124, each of the wing ribs 126 has a front flange 127 and a flange 128 opposite the front flange 127, In this embodiment, the front flange 127 is relatively close to the fan wheel 120, and the rear flange 128 is relatively far from the fan wheel 120. The top edge 123 and the front flange 127 have a first spacing. D1, the top edge 123 and the rear flange 128 have a second spacing D2, the first spacing D1 is greater than the second spacing D2, and the front flange 127 and the rear flange 128 are defined There is a string L1, and an angle α is formed between the string L1 and a horizontal line L2 parallel to the base 111. In the embodiment, the angle α is between 1 and 16 degrees, and the top edge There is a height H between the 123 and the bottom edge 124. The first spacing D1 is not greater than two-half of the height H, or, in another embodiment, the second spacing D2 is not greater than the height H. After two minutes, when the fan wheel 120 of the cooling fan 100 is driven to rotate, air flows through the pressure receiving surface S1 of each of the wing ribs 126 at different speeds and the suction The surface S2, wherein the velocity of the air flowing through the pressure receiving surface S1 is less than the speed of flowing through the suction surface S2, so that the airflow pressure of the pressure receiving surface S1 is greater than the airflow pressure of the suction surface S2, so that the pressure surface S1 and the suction surface S2 generate a difference in airflow pressure. Preferably, when the angle of the angle α is 4 degrees, the airflow pressure difference is optimal, and the fan wheel 120 is subjected to a direction by the airflow pressure difference. The airflow pressure in the direction of the base 111 prevents the fan wheel 120 from moving away from the base 111 due to the centrifugal force during rotation, and prevents the gap between the fan wheel 120 and the base 111 from being excessively large and rotating. Shaking, so the rotation stability of the fan wheel 120 can be effectively improved.
Referring to FIGS. 3 and 4, in the embodiment, the cover 112 of the frame 110 has a body 113 and an air inlet 114. The body 113 shields the wing ribs 126, preferably The body 113 shields the front flanges 127 of the wing ribs 126. Since the wing ribs 126 are covered by the cover plate 112, when the fan wheel 120 rotates, air is taken from the cover plate. When the air inlet 114 of the 112 is introduced into the fan wheel 120, the airflow does not cause backflow and turbulence, so that the noise generated by the cooling fan 100 can be effectively reduced and the static pressure of the fan can be increased. In addition, please refer to FIG. It is a second preferred embodiment of the present invention. The second embodiment differs from the first embodiment in that the rear flange 128 of the wing rib 126 protrudes from one side 125 of the second blade 122. Since the front flange 127 is farther away from the air inlet 114 of the cover plate 112 in the radial direction than the front flange 127 of the first embodiment, the air introduced from the air inlet 114 can be introduced by the front. The space formed between the flange 127 and the air inlet 114 produces a better flow field, which can effectively reduce the entrance of the cover 112. Spoiler phenomenon port 114.
When the fan wheel 120 of the cooling fan 100 rotates, air flows through each of the wing ribs 126 to cause a pressure difference between the pressure receiving surface S1 and the suction surface S2, wherein the pressure of the pressure receiving surface S1 flows. The airflow pressure is greater than the airflow pressure of the suction surface S2. According to the airflow pressure difference, the fan wheel 120 is subjected to a flow pressure toward the base 111, so that the fan wheel 120 can be prevented from being rotated by the centrifugal force. After the pedestal 111 and preventing the gap between the fan wheel 120 and the pedestal 111 from being excessively large and causing sway during rotation, the wing-shaped ring formed by the wing ribs 126 can increase the first The rigidity of the blade 121 and the second blades 122 and the rotation stability of the cooling fan 100 are improved. Especially when the cooling fan 100 is used upside down, the base 111 is located above the cover 112, which is more effective. The fan wheel 120 is detached by the influence of gravity.
The scope of the present invention is defined by the scope of the appended claims, and any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are within the scope of the present invention. .
100．．．散熱風扇100. . . Cooling fan
110．．．框體110. . . framework
111．．．基座111. . . Pedestal
112．．．蓋板112. . . Cover
113．．．本體113. . . Ontology
114．．．入風口114. . . Air inlet
120．．．扇輪120. . . Fan wheel
121．．．第一葉片121. . . First blade
122．．．第二葉片122. . . Second blade
123．．．頂緣123. . . Top edge
124．．．底緣124. . . Bottom edge
125．．．側邊125. . . Side
126．．．翼形肋126. . . Wing rib
127．．．前翼緣127. . . Front flange
128．．．後翼緣128. . . Rear flange
200．．．散熱風扇200. . . Cooling fan
210．．．基座210. . . Pedestal
220．．．扇輪220. . . Fan wheel
221．．．扇葉221. . . Fan blade
222．．．軸桿222. . . Shaft
230．．．上蓋230. . . Upper cover
240．．．定子240. . . stator
250．．．軸承250. . . Bearing
D1．．．第一間距D1. . . First spacing
D2．．．第二間距D2. . . Second spacing
L1．．．弦線L1. . . String
L2．．．水平線L2. . . Horizontal line
α．．．夾角α. . . Angle
H．．．高度H. . . height
S1．．．受壓面S1. . . Pressure surface
S2．．．吸入面S2. . . Inhalation surface
第1圖：依據本發明之第一較佳實施例，一種散熱風扇之立體分解圖。
第2圖：依據本發明之第一較佳實施例，該散熱風扇之立體組合圖。
第3圖：依據本發明之第一較佳實施例，該散熱風扇之扇輪之上視圖。
第4圖：依據本發明之第一較佳實施例，該散熱風扇之上視圖。
第5圖：依據本發明之第一較佳實施例，第4圖沿著A-A剖線之側面剖視圖。
第6圖：依據本發明之第二較佳實施例，該散熱風扇之側面剖視圖。
第7圖：習知散熱風扇之示意圖。
第8圖：習知散熱風扇於倒掛使用時之示意圖。
Figure 1 is an exploded perspective view of a heat dissipating fan in accordance with a first preferred embodiment of the present invention.
Figure 2 is a perspective view of the heat dissipating fan in accordance with a first preferred embodiment of the present invention.
Figure 3 is a top view of the fan wheel of the cooling fan in accordance with a first preferred embodiment of the present invention.
Figure 4 is a top view of the heat dissipating fan in accordance with a first preferred embodiment of the present invention.
Figure 5 is a side cross-sectional view taken along line AA of Figure 4 in accordance with a first preferred embodiment of the present invention.
Figure 6 is a side cross-sectional view of the heat dissipating fan in accordance with a second preferred embodiment of the present invention.
Figure 7: Schematic diagram of a conventional cooling fan.
Figure 8: Schematic diagram of the conventional cooling fan used when hanging upside down.
100．．．散熱風扇100. . . Cooling fan
110．．．框體110. . . framework
111．．．基座111. . . Pedestal
112．．．蓋板112. . . Cover
113．．．本體113. . . Ontology
114．．．入風口114. . . Air inlet
120．．．扇輪120. . . Fan wheel
121．．．第一葉片121. . . First blade
122．．．第二葉片122. . . Second blade
123．．．頂緣123. . . Top edge
124．．．底緣124. . . Bottom edge
125．．．側邊125. . . Side
126．．．翼形肋126. . . Wing rib
127．．．前翼緣127. . . Front flange
128．．．後翼緣128. . . Rear flange
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101111954A TWI534357B (en) | 2012-04-05 | 2012-04-05 | Heat dissipation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101111954A TWI534357B (en) | 2012-04-05 | 2012-04-05 | Heat dissipation fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201341670A TW201341670A (en) | 2013-10-16 |
| TWI534357B true TWI534357B (en) | 2016-05-21 |
Family
ID=49771359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW101111954A TWI534357B (en) | 2012-04-05 | 2012-04-05 | Heat dissipation fan |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI534357B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI847283B (en) * | 2022-09-26 | 2024-07-01 | 華碩電腦股份有限公司 | Fan module |
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2012
- 2012-04-05 TW TW101111954A patent/TWI534357B/en not_active IP Right Cessation
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| Publication number | Publication date |
|---|---|
| TW201341670A (en) | 2013-10-16 |
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