TWI249282B - Heat dissipating fan without circumfluence - Google Patents

Abstract

The present invention relates to a heat dissipating fan without circumfluence, which comprises a motor stator, a frame, a motor rotator and fan blades. The air inlet side of the frame is assembled with the motor stator by a supporting structure, so that the motor rotator is placed in the frame and the motor rotator is mounted on the motor stator. The motor rotator can be fixed with the fan blades so that the fan blades are positioned at the air outlet side of the heat dissipating fan, so as to increase the wind flow area of the air outlet of the heat dissipating fan, and produce no retard area at the lower ends of the fan blades, thereby achieving the effect of increasing the heat dissipating area and decreasing the noise.

Description

J249282 V.^———一~^^ “Invention: the technical field of the genus” means that the invention is related to a “cooling fan without reflow characteristics”, which can greatly increase the airflow area of the air outlet of the cooling fan. The fan τ4ι is generated without a stagnation zone to increase the heat dissipation area and reduce the noise efficiency of the fan. "Previous Technology" With the rapid development of electronic components and the increase of the operating clock, the heat generated by electronic components has also increased greatly. Therefore, how to effectively eliminate the large amount of heat to make the electronic components operate smoothly is important for design. problem. Referring to the first to fourth figures, as shown, it is a conventional cooling fan 1, which mainly includes a motor stator 11 and a motor rotor 1 2 'where a bearing sleeve 1 is mounted on the motor stator 1 1 1 1 , a coil 11 2 is arranged around the bearing sleeve 1 1 1 , and a fan blade 1 2 2 is arranged around the valley portion 1 2 1 of the motor rotor 12, and the wheel valley 1 2 1 is set A shaft 1 2 1 a is disposed, and a magnet 1 2 3 is disposed at an inner edge of the valley portion 1 2 1 . When the motor rotor 2 is assembled to the motor stator U, the coil 11 2 and the magnet 1 23 are provided. The interaction of the motor rotor 12 is driven. Please cooperate with the fifth figure. When the cooling fan 1 is running, the wind flow generated by the fan blades 122 may be in the rim portion due to the presence of the valley portion 121. The airflow retention zone is formed below the 1 2 1 , so that the airflow cannot be effectively and smoothly circulated, and the heat dissipation effect of the heat dissipation fan 1 as a whole is greatly impaired. The reason is that, in view of the shortcomings derived from the above-mentioned habits, the inventor of this case is more perfect in improving the case, exhausting his mind, and engaging in the experience of the bank 1242922 V. Inventions (2) Innovatively improved and finally successfully developed the "cooling fan without reflow characteristics" case, which is actually an invention with enhanced efficiency. OBJECT OF THE INVENTION The main object of the present invention is to provide a heat-dissipating fan which has no reflow characteristics to increase the air flow area on the tuyere side; the secondary object of the present invention is to provide a non-reflow-free region which does not generate a retention zone under the fan blades. A cooling fan of the characteristics; another object of the present invention is to provide a low-noise cooling fan having no reflow characteristics. The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings. <<Embodiment>> The present invention provides a "cooling fan without reflow characteristics", please refer to the sixth to ninth drawings, which is a first embodiment of the present invention. As shown in the figure, the cooling fan 2 is provided by The motor stator 2 1 , the frame 2 2 , the motor rotor 2 3 , the fan blade 24 , and the like are formed; wherein the bearing sleeve 2 1 1 of the motor stator 2 1 is provided with a coil 2 1 2 and supported by the support structure 2 2 2, coupled to the air inlet side 2 2 of the frame 2 2, the motor rotor 2 3 has a receiving portion 2 3 1, and a magnet 2 3 2 is assembled, wherein the fan blade 24 is assembled in a Central part 2 4 1,

Page 6 !249282 V. Description of invention (3) ---——~ __ The φ , . The portion 2 4 1 is formed into a rod shape, and the joint portion 25 can be a solid portion of the core portion 2411. The solid portion 25 is coupled to the motor rotor 23 and is connected to the blade 24 of the fan blade. The motor rotor 23 is provided with a set of 2 U ', and the motor and the wire rotor 23 are disposed in the bearing sleeve of the motor stator 21, and the motor rotor 23 is placed on the support structure 222 of the frame 22. Form 22Γ. The fan blade 24 is located on the air outlet side of the heat dissipation fan 2. Please refer to the tenth figure. As shown in the figure, when the heat dissipation fan 2 is energized, i is formed on the motor rotor 23 and disposed on the support structure 222. In the space, the motor rotor 2 3 is not provided with a conventional rim portion, but the rod-shaped central portion 241 is combined with the design of the fan blade 24. Therefore, the fan blade 24 can be formed completely intact. The airflow area 'increased the airflow area of the air outlet side 2 2 3 of the cooling fan 2, and avoids the disadvantage of creating a stagnant zone below the fan blade 24 due to the presence of the wheel destroying portion. Therefore, the noise of the cooling fan 2 can be reduced to achieve an effect of increasing the heat dissipation area and low noise. Moreover, referring to the eleventh figure and the thirteenth figure, as shown in the figure, the central portion 341 of the fan blade 24 can be designed to be tapered. The middle end of the center portion 34 1 is located at the cooling fan 2 The air outlet side / 23 ' to facilitate the flow of air, to enhance the effect of heat dissipation, please refer to the fourteenth to sixteenth figure, the center part 341 can be used in different traps to design a trapezoidal cone In the shape, the central portion 3 4 1 is at the flat end 3 4 1 b and is located on the air outlet side 2 2 3 of the heat dissipation wind 2 . Also, please refer to Figure 17 and Figure 18, where the hurricane belongs to the blade 24

1249282 V. INSTRUCTION OF THE INVENTION (4) The central portion + ( 2 4 1, 3 4 1 ) ' is integrally formed with the motor rotor 23 and the fixed portion 25 such that the fan blade 24 is located below the motor rotor 23. Or, as shown in FIG. 18, the fan blade 24 does not need to be disposed at the center portion (2 4 丨, 3 4 丨), and is integrally formed with the motor rotor 23 and the fixing portion 25 in the motor rotor. The magnet 232 is assembled on the motor rotor 23 under the lower part of the 2-3; or as shown in the nineteenth and tenth drawings, the fan blade 24 is disposed at the center portion (2 ^ working) and is located in the ring Below the body 2 3 3 and integrally formed with the annular body 2 3 3 , the fixing portion 25 and the magnet 2 32 are assembled to the motor rotor 23, and the annular body 2 3 3 is assembled on the motor rotor 23, or In the twenty-fifth figure, the fan blade 24 may be integrally formed with the annular body 2 3 3 without being assembled at the central portion (241, 341); or as shown in the twenty-first embodiment, the fan blade 24 The center portion (the fixing portion 25 of 241, 34m can be hooked according to the actual needs of the design or production) so that the fan blade 24 is hooked to the receiving portion 2 3 1 of the motor rotor 23. According to the twenty-second diagram and the twenty-fifth diagram, FIG. is a second embodiment of the present invention, wherein the heat-dissipating fan 5 is provided with a coil 5 1 on the bearing sleeve 5 1 1 of the horse 2, the straight middle 「 method "forced to open the support I structure 52 2, where: = = mouth interface 5 3 1, and a magnet 5 3 2, a set of 誃 巨 一 一 设 设 设In the portion 541, the center portion 541 is formed in a rod shape, and a fixing portion 5 5 is formed on the tea group 54 of the group 54, and the fixing portion η is -w; And a portion extending to the center of the motor rotor 53, and the support structure of the stator 51 disposed on the frame 52 fixes the fixing portion 5 5 of the tea piece 5 4 to the receiving end of the motor rotor 53. The fan blade 54 is fixed to the motor rotor 53, and the fan blade 54 is used to make the fan blade 54 1249282. The invention (5) The motor rotor 53 is assembled to the motor stator 51. The bearing piece 54 is located at the air outlet side 523 of the cooling fan 5, and the fan blade is powered by the cooling fan 5, and is below the fan blade 5 3 and the fan blade 54 is partially extended by two. Up to the toroidal surface 533, since the area of the fan blade 54 is increased to the motor rotor 53, a more characteristic wind flow can be formed, so that the airflow under the cooling fan blade 54 is increased, and the air outlet side of the trough portion can be avoided. 523=The shortcomings of the raw retention zone, and thus the reduction of the vertical blade to achieve the effect of increasing the heat dissipation area and low noise. Please refer to the twenty-sixth to twenty-eighth drawings, as in the present invention. In the third embodiment, the heat dissipation fan 6 is disposed in the frame 62 by &quot;no,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, The fan 3 of the tuyere side 621 is fixed to the motor stator 63 under the motor rotor 63 provided with the magnets 6 32. The rotor 63 is assembled on the motor stator 61. In this manner, the structure of the mountain frame 62 is It can achieve the advantage of the smaller volume of the wind flow area of the air outlet side of the feather outlet of the invention. 1 has a frame 62 and 'see the twenty-ninth and thirty-th, as shown in the fourth embodiment of the invention, which is a fan blade 732' and is located below the motor rotor 73: The surface '4' has to make the cooling winds have the characteristics of the fan blade airflow, and the airflow area of the inlet side 723\ is increased, and the heat dissipation effect of the cooling fan 7 is added. (54, 64 74) in the four-part example, in the center of the fan blade, and when connected to the center (241, 341)

Page 9 1249282 V. INSTRUCTION DESCRIPTION (6) (2 4 1, 3 4 1 ) According to the first embodiment, the fan blade (5 4, 6 4, 7 4 ) and the motor rotor (5 3 The fixing method of 6 3, 7 3 ) can be applied to the fixing state used in the first embodiment to meet the actual needs in design or production. Please refer to the 31st and 32nd drawings. The figure is a schematic diagram of the performance curve of the present invention and the conventional fan. The curve 8 1 and the curve 8 2 are the performance curves of the present invention. Curve 8 3 is a conventional performance curve, wherein curve 8 2 is the performance curve of the fourth embodiment, and the thirty-second figure is a schematic diagram of the noise and thermal resistance curve of the present invention and the conventional curve, curve 8 4 , curve 8 5 is the relationship curve of the present invention, and the curve 8.6 is a conventional relationship curve, wherein the curve 8.5 is the relationship curve of the fourth embodiment, and thus the second figure shows that the present invention has low performance characteristics in the conventional heat dissipation fan. In the following, the heat resistance value can be achieved at the same noise value. In particular, the assembly method of the fourth embodiment has a better performance curve and can obtain better airflow output efficiency, so the heat dissipation effect of the invention is obvious. Higher than the conventional cooling fan. In summary, the "heat-dissipating fan without reflow characteristics" provided by the present invention does meet the requirements of the patent, and the patent application is filed according to law, and the patent is pledged. It is to be understood that the above-described methods, shapes, configurations, and devices of the present invention are intended to be included within the scope of the present invention. "Description of the number" 1 · · · Cooling fan 11 · ••Motor stator 1 1 1 · · · Bearing sleeve 1 12 · · · Coil

Page 10 1249282 V. INSTRUCTIONS (7) 12 · · • Motor Rotor 121 · • • Valley Trolley 121a · · Axis 122 · • • Fan Blade 123 · · • Magnet 2 · • • Cooling Fan 21 · · • Motor stator 211 · • • Bearing sleeve 212 · · • Coil 22 · •• Frame 221 · · • Air inlet side 2 2 2 · •• Support structure 2 2 3 · · • Air outlet side 23 · •• Motor rotor 231 · · • Receiving part 2 3 2 · •• Magnet 2 3 3 · · • Ring body 2 4 · • • Fan blade 241 · · • Center part 25 · ••Fixed part 341 · · • Center part 341a· • • Tip 341b · · • Flat end 45 · •• Hook 5 · · • Cooling fan 51 · ••Motor stator 511 · · Bearing sleeve 512 · • • Coil 52 · · • Frame 521 · •• Air inlet side 5 22 · · • Support structure 5 2 3 · •• Air outlet side 53 · · • Motor rotor 531 · •• Receiving part 5 3 2 · · • Magnet 5 3 3 · • • Outer ring surface 54 · · • Fan Blade 541 · • • Center 55 · · • Fastening 6 · • • Heat fan 61 · · • Motor stator 612 · • • Coil 62 · · • Frame 621 · •• Air inlet side 6 2 2 · · • Support mechanism 6 2 3 · • • Air outlet side 63 · · • Motor rotor 6 3 2 · • • Magnet

Page 11 1249282 V. INSTRUCTIONS (8) 64 · · • Fan blade 7 · • • Cooling fan 72 3 · · • Air outlet side 73 · • • Motor rotor 731 · · • Outer ring surface 73 2 · • • Fan Blade 7 4 · · • Fan blade 81 · • · Curve 82 · · • Curve 83 · •• Curve 84 · · • Curve 85 · •• Curve 86 · · • End of curve chapter

Page 12 1249282

Page 13 1249282 BRIEF DESCRIPTION OF THE DRAWINGS The twentieth diagram is a perspective exploded view of the fan blade assembly of the center portion which is not disposed at the center portion of the motor rotor; FIG. 11 is a first embodiment of the present invention FIG. 22 is a perspective exploded view of a second embodiment of the present invention; FIG. 22 is a perspective exploded view of a second embodiment of the present invention; A perspective view of a perspective view of a second embodiment of the present invention; a twenty-fourth view of the second embodiment of the present invention; A perspective exploded view of a third embodiment of the present invention;

Figure 27 is a perspective exploded view of another perspective view of the twenty-sixth embodiment; Figure 28 is a schematic cross-sectional view showing a third embodiment of the present invention; FIG. 30 is a schematic cross-sectional view of a fourth embodiment of the present invention; FIG. 31 is a schematic view showing the performance curve of the fan of the present invention and the conventional fan; The schematic diagram of the noise and thermal resistance curves of the present invention and the conventional ones. End of chapter

Page 14

Claims (1)

1249282 VI. Patent Application No. 1 · A cooling fan without reflow characteristics, which mainly comprises a motor stator, a frame and a motor rotor, wherein the air inlet side of the frame is assembled with a motor stator and a motor stator. The motor stator is disposed in the frame, and the fan blade is disposed below the motor rotor, and the fan blade is located on the air outlet side of the frame to increase the airflow area of the air outlet, so that the air outlet side has no stagnant area. It is produced to increase the heat dissipation area and reduce the noise. 2. The heat-dissipating fan having no reflow characteristics according to claim 1, wherein the fan blade is integrally formed with the motor rotor and located below the motor rotor. 3. The heat-dissipating fan having no reflow characteristics according to claim 1, wherein the fan blade is assembled in a central portion. 4. The heat-dissipating fan having no reflow characteristics according to claim 3, wherein the center portion is formed in a rod shape. 5. The heat-dissipating fan having no reflow characteristics according to claim 3, wherein the longitudinal section of the central portion is tapered, and the tip end of the central portion is located on the air outlet side of the heat dissipation fan. 6. The heat-dissipating fan having no reflow characteristics according to claim 3, wherein the longitudinal section of the central portion has a trapezoidal shape, and the flat end of the central portion is located on the air outlet side of the heat dissipation fan. 7. The heat-dissipating fan having no reflow characteristics according to claim 3, wherein a central portion of the fan blade is provided with a fixing portion for fixing the fan blade to the motor rotor. 8. A cooling fan without reflow characteristics as described in claim 7 of the patent scope, Page 15 1249282 VI. Scope of Patent Application The fixed part is a shaft center. 9. The heat-dissipating fan having no reflow characteristics according to claim 7, wherein the fixing portion is a hooking member. A heat-dissipating fan having no reflow characteristics, which mainly comprises a motor stator, a frame, and a motor rotor, wherein the air inlet side of the frame is assembled with the motor stator by a support structure, and the motor rotor is placed in the frame. The motor stator is characterized in that: a fan blade is disposed under the motor rotor, and the fan blade portion extends to the outer ring surface of the motor rotor, and the fan blade is located on the air outlet side of the heat dissipation fan, thereby improving the airflow characteristic. In addition, the airflow area of the air outlet of the cooling fan is increased, so that the rear end of the fan blade has no stagnant area, so as to increase the heat dissipation area and reduce the noise. 11. The heat-dissipating fan having no reflow characteristics according to claim 10, wherein the fan blade is integrally formed with the motor rotor and located below the motor rotor. 1 2. A heat-dissipating fan having no reflow characteristics as described in claim 10, wherein the fan blade is assembled in a central portion. 1 3. A heat-dissipating fan having no reflow characteristics as described in claim 12, wherein the center portion is formed in a rod shape. 1 . The heat-dissipating fan having no reflow characteristics according to claim 12, wherein a longitudinal section of the central portion is tapered, and a tip end of the central portion is located on an air outlet side of the heat dissipation fan. 1 5 . The heat-dissipating fan having no reflow characteristics according to claim 12, wherein the longitudinal section of the central portion is trapezoidal and the center Page 16 1249282_ VI. Patent Application The flat end of the part is located on the air outlet side of the cooling fan. A heat-dissipating fan having no reflow characteristics as described in claim 12, wherein a central portion of the fan blade is provided with a fixing portion for fixing the fan blade to the motor rotor. 1 7. The heat-dissipating fan having no reflow characteristics according to claim 16 of the patent application, wherein the fixing portion is an axial center. 1 8 . The heat-dissipating fan having no reflow characteristics according to claim 16 of the patent application, wherein the fixing portion is a hooking member. 1 . A heat-dissipating fan without reflow characteristics, which mainly comprises a motor stator, a frame and a motor rotor, wherein the air inlet side of the frame is assembled with a motor stator and a motor stator disposed on the frame The motor has a fan blade on the outer ring surface, and another fan blade is disposed under the motor rotor, and the fan blade is located on the air outlet side of the heat dissipation fan to enhance the air flow characteristic and thereby increase the heat dissipation fan. The airflow area of the air outlet causes the occurrence of no stagnant area at the lower end of the fan blade, so as to increase the heat dissipation area and reduce the noise. The heat-dissipating fan having no reflow characteristics according to claim 19, wherein the fan blade is integrally formed with the motor rotor and located below the rotor of the motor. 2 1. The heat-dissipating fan having no reflow characteristics according to claim 19, wherein the fan blade is assembled in a central portion. 2 2. A heat-dissipating fan having no reflow characteristics as described in claim 2, wherein a center portion of the fan blade is rod-shaped. Page 17 1249282 VI. Patent Application Range 2 3 · The heat-dissipating fan without reflow characteristics as described in claim 2, wherein the longitudinal section of the central portion is tapered, and the central end is located at a cooling fan The outlet side. 24. The heat-dissipating fan having no reflow characteristics according to claim 21, wherein the longitudinal section of the central portion is tapered in a trapezoidal shape, and the flat end of the core portion is located on the air outlet side of the cooling fan. 2. The heat-dissipating fan having no reflow characteristics according to claim 2, wherein a central portion of the fan blade is provided with a fixing portion, and the fan blade is fixed to the motor rotor. 2 6. A heat-dissipating fan having no reflow characteristics as described in claim 25, wherein the fixing portion is an axial center. 2 7. The heat-dissipating fan having no reflow characteristics according to claim 25, wherein the fixing portion is a hooking member. The wind of the wind · the middle wind to make the wind