JP3093064U - Radiator fan driven by single stator external pole - Google Patents

Abstract

(57) [Summary] [Problem] To improve the wind discharge and heat radiation efficiency by improving the problem of no wind at the center of the fan, the large number of stators, and the large consumption of electromagnetic power. Provided is a single-stator outer-pole-driven heat-dissipating fan that can reduce inconvenience and cost in manufacturing by reducing the overall weight, and can also reduce power consumption of electromagnetic power to increase efficiency. A fan wheel and a single stator are provided. An induction ring magnet is provided around the outer periphery of the fan wheel, and an iron core is formed on the single stator. A plurality of magnetic pole columns corresponding to the induction annular magnet are extended from the iron core so as to be integral with each other, and an induction coil is wound around at least one magnetic pole column, and the induction coil is located at one end of the magnetic pole column. It is formed so that.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a heat dissipation fan, and more particularly to a computer or electronic equipment facility. The present invention relates to a single stator outer pole driven radiating fan used in.

[0002]

[Prior art]

  Conventionally, this type of heat radiation fan has the following configuration.

[0003]   Figure 1 shows the heat dissipation fan used in general computers and electronic equipment. In that structure, the stator 10 is located in the middle of the inside of the fan wheel 12. Mostly installed, and the blades 14 are on the outer periphery of the fan wheel 12. It is installed on the edge. As described above, the conventional heat dissipation fan 1 is coupled to the heat dissipation piece set 2. Then, when heat is dissipated to the heating element 3 (for example, the central processing unit), the stay Center part of the heat dissipating piece set 2 by installing members such as the rotor 10 and the fan wheel 12 Since it occupies a large amount of A, its central portion A is formed in a windless area. But one The heat-generating element 3 in a general computer or electronic equipment is designed to generate heat through the heat-dissipating piece set 2. When conducting, the central portion A (the portion indicated by the phantom line in FIG. 1) is Since the maximum temperature is reached, the distribution of wind exhaust from the heat dissipation fan 1 and the heat dissipation piece set 2 The temperature distribution cannot be optimally mixed, in other words, a large amount of air flow Even if it is necessary to cool the central portion A, there is no wind, and on the contrary, the temperature is relatively low. On the contrary, the part has a large air volume. Therefore, the cooling rate is relatively high with the above method. It is low, and the consumption capacity required to reach the same temperature drop effect is also large, so And becomes impractical.

[0004]   In order to improve the above-mentioned problems of the conventional heat radiation fan 1, in the industry, as shown in FIG. Such an outer pole type heat radiation fan 4 has been developed, and the outer pole type heat radiation fan 4 is mainly an annular magnet. 40 on the outer periphery of the vanes 42, and four single pole stators 44 It is installed at the outer periphery of the annular magnet 40 at intervals. Such an outer pole type heat radiation fan 4 is By installing the stator 10 in the conventional heat radiation fan 1 in the central portion, It is possible to solve the problem that the center part is in a windless state, and the blade 42 It is possible to increase the volume of air by increasing the effective diameter of Therefore, a relatively good heat dissipation effect can be obtained.

[0005]

[Problems to be solved by the device]

  However, such an outer pole type heat radiation fan 4 has four single pole stators 44. Since the gap is too close, it is difficult to fix it and connect it with the coil of the stator 44. Not only is it inconvenient, but the overall weight also increases, and each single pole stay The direct magnetic field circuit is lacking in the iron core of the switch 44, so the consumption of electromagnetic power is large. However, there was a problem that the efficiency was poor.

[0006]   The present invention has been made in view of these problems, and has its object. However, there is no wind in the center of the fan, the number of stators is large, and Effective in improving the air discharge and heat dissipation efficiency by improving the problem of large exhaustion To reduce manufacturing inconvenience and cost by reducing overall weight In addition, it is possible to increase the efficiency by suppressing the consumption of electromagnetic power to a low level. The present invention is intended to provide a heat dissipation fan driven by an outer pole of a motor.

[0007]

[Means for Solving the Problems]

  To achieve the above object, a single stator outer pole driven radiating fan according to the present invention Is as follows.   That is, the radiating fan driven by a single stator outer pole of the present invention is a fan wheel and a fan. And a single stator. An induction ring is formed on the outer peripheral edge of the fan wheel. A magnet is installed in a ring, and an iron core is formed on the single stator. In the induction ring magnet A plurality of corresponding magnetic pole columns are extended from the iron core so as to be integrated, and at least An induction coil is wound around one pole pole, and the induction coil is one of the pole poles. It is formed so as to be located at the edge.

[0008]   Further, the single stator outer pole driven heat radiation fan of the present invention is configured as follows. You can also 1. The number of the magnetic pole columns is two, and the shape of the iron core is U-shaped.

[0009]

[Embodiment of device]

  Embodiments of the present invention will be described below with reference to the drawings.

[0010]   3 and 4 are side views of a radiating fan driven by a single stator outer pole according to an embodiment of the present invention. FIG. 1 is a cross-sectional view of the assembled and assembled state, showing a single stator outer pole The dynamic heat radiating fan 5 mainly includes a substrate 50, an outer casing 52 coupled to the substrate 50, A fan wheel 54 installed between the substrate 50 and the outer casing 52, and the fan wheel The fan wheel 54 is installed on the substrate 50 outside the wheel 54 to induce the fan wheel 54 to rotate. It is constituted by a member such as a single stator 56 for conducting. Among them, the group The plate 50 is provided with a control member 58, and the fan wheel 54 is provided with a hub 540. The hub 540 is formed with a rotating shaft 542 and is coupled to the hub 54. A plurality of blades 544 are installed on the outer peripheral edge of 0. Further, outside the blade 544 An induction ring magnet 546 is installed around the periphery to guide each other with the single stator 56. Be done. Particularly, an iron core 560 is formed on the single stator 56, and the iron core 560 is So that they are integrated into an even number (two pole pieces 562 in this embodiment). Then, the iron core 560 is formed in a U shape. At least Induction coil 564 is wound around one pole column 562, or two poles An induction coil 564 can be wound around each of the columns 562.

[0011]   Referring again to FIGS. 3 and 4, in the embodiment of the invention shown in FIG. With reference to the cross-sectional view of the heat dissipation fan driven by the outer pole of the rotor in use, When the induction coil 564 is energized to generate excitation, the induction coil 564 and the hub 54 The induction ring magnet 546, which is provided around the outer peripheral edge of the blade 544 of 0, guides each other. Magnetic force is generated by the magnetic force, and the magnetic force causes the hub 540 to interlock with each other and the fan wheel 54 To rotate. At this time, the fan wheel 54 is located in the middle of the fan 5. Therefore, as shown in FIG. Spray directly on the central zone B of the highest temperature on the set 7 (the part marked by the phantom line in FIG. 1) The fan has a large effective diameter, which further improves heat dissipation. Can be reached Also, the two pole columns 562 of the single stator 56 are By extending in a U shape from the iron core 560 so as to be integrated, a fan wheel Circuit of the magnetic field closed with the induction ring magnet 546 corresponding to the rule 54 is formed. Therefore, the consumption of electromagnetic power can be greatly reduced without the occurrence of magnetic field leakage. In addition to being able to improve efficiency, it can save about 1/4 of electric power. it can. In addition, in the present embodiment, there is only one single stator 56. As a result, the weight of the fan 5 as a whole can be significantly reduced, which is also difficult in manufacturing. It is convenient, keeps the manufacturing cost low, and It is very suitable for the light weight requirements of Sokon.

[0012]

[Effect of device]

  According to the radiating fan driven by the outer pole of the single stator of the present invention, the single stator of the present invention is provided. Only one iron core is formed in the core, so that an even number of pole posts are integrated from the iron core. The fan wheel is smoothly extended to rotate because it is extended to In addition to increasing the amount of air exhaust and heat dissipation efficiency required for conventional outer pole type heat dissipation fans The magnetic pole post is made integral with the iron core while at the same time the advantages of And the induction ring magnet corresponding to the fan wheel Since a closed magnetic field circuit is formed, no magnetic field leakage occurs and The consumption of power can be greatly reduced and the efficiency can be improved. Also, because it has only one single stator, it greatly reduces the weight of the whole fan. be able to. Furthermore, the coil can be wound around only one induction coil Therefore, there is an advantage that difficulty in manufacturing and cost can be suppressed.

[0013]   The present invention may be embodied in other ways without departing from its spirit and essential characteristics. Can be given. Accordingly, the preferred embodiments described herein are exemplary It is a thing, not a limitation.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an assembled state using a conventional heat radiation fan.

FIG. 2 is a side view of another conventional heat radiation fan.

FIG. 3 is a side view of a radiating fan driven by a single stator outer pole according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of an assembled state of a single stator outer pole driven radiating fan according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view of a single stator outer pole driven radiating fan according to an embodiment of the present invention in use.

[Explanation of symbols]

5 fans 50 substrates 52 outer casing 54 fan wheel 540 hub 542 rotation axis 544 feathers 546 induction ring magnet 56 single stator 560 iron core 562 pole post 564 induction coil 58 Control member 6 heating element 7 Heat dissipation piece set A center B central area

Claims (2)

[Scope of utility model registration request] 1. A radiating fan driven by a single stator outer pole, comprising a fan wheel (54) and a single stator (56), wherein an induction ring magnet (546) is provided on an outer peripheral edge of the fan wheel (54). ) Is provided in an annular manner, an iron core (560) is formed on the single stator (56), and a plurality of magnetic pole columns (5) corresponding to the induction annular magnet (546) are formed.
62) is integrally extended from the iron core (560), and an induction coil (564) is wound around at least one magnetic pole column (562) to form the induction coil (56).
4) A heat radiating fan driven by an outer pole of a single stator, which is formed to be located at one end of the pole post 562. 2. The single stator outer member according to claim 1, wherein the number of the pole posts (562) is two, and the shape of the iron core (560) is U-shaped. A pole driven heat dissipation fan.