TWM245735U - Airflow guiding structure for a heat dissipating fan - Google Patents

Description

lViZ ^ + D Creation Description (1) [Technical Field to which the New Type belongs] This creation is about a diversion structure for the Santuto eve φ Π… fan's air outlet diversion structure, especially the closed diversion; Guided by: i: f: Formed several radial diversion parts and several ring air outlet diversion structures. 、 Increase wind pressure and reduce wind cut D Sang Yin's [Previous Technology] Xi = The structure of the shell of the heat fan, as shown in the figure i, it includes a shell 1 1 Λ air outlet 1 1, an air outlet 1 2, A base 13 and a plurality of ribs 1 4. The air inlet 11 and the air outlet 12 are formed on two sides. The base 13 is stably formed with ribs 14 at the air outlet of the casing 10 for fixing. Second, the egg 11 is not shown] & Combined with a wheel [not shown]. With this, when the, and the operation is 蚪, the cooling fan can suck the airflow through the air inlet 1 i and

: 止 ί Mouth 12 is exhausted ’to dissipate a certain heat-dissipating object * [such as a finned sound central processing unit]. I Although the conventional cooling fan does have a cooling function, the turbulent flow of the cooling fan can usually only follow the axial direction of the housing and pass through the air outlet i 2, so as to The heat is dissipated directly under the air outlet 12. However, if the object to be dissipated cannot be located directly below the air outlet 丨 2, the object to be dissipated will not be able to receive most of the heat dissipation airflow, which may cause uneven heat dissipation and affect the actual heat dissipation efficiency. On the other hand, when the object to be dissipated due to limited assembly space (for example, in a notebook computer) cannot be selected to be combined directly below the base 13 or the periphery of the air outlet 12, or when the object to be dissipated has When the size is too large to be directly below the cooling fan, it will seriously affect the actual cooling efficiency. Moreover, the Qi

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Page 6 M245735 V. Creation instructions (2) Flowing, when passing through the rib 14, it is also easy to accompany the formation of turbulence or turbulence, resulting in ° dull sound and reducing heat dissipation efficiency. There are yttrium here. This creation improves the above-mentioned disadvantages. It is formed on the ribs of the air outlet by a plurality of radial diversions and a plurality of annular diversions. Due to the diameter, the muscle ridges are formed relative to the blades of the fan wheel. Inclined, and the axial direction of the annular flow guide portion is inclined with respect to the air outlet, so the rib can guide the airflow to any position to be radiated, and at the same time relatively increase the wind pressure. Therefore, this creation does have a range of underheating, heat dissipation in #, reducing wind-cut noise, improving overall heat dissipation efficiency, and increasing the design margin of the assembly. [New content] Straightforward: To provide a guide structure for the air outlet of a cooling fan. There are two radial guides and at least one clothes-like flow section at each rib of * ^ air outlet f. The radial diversion is adjacent to this product u. The ψ π gate ^ and the% -shaped diversion parts are inclined relative to the axial direction of the fan piece and the air outlet of the fan, respectively, so that the creative tool increases wind pressure, The work of reducing wind-cut noise and improving overall heat dissipation efficiency [Requirement] Γ provides a guide structure for the air outlet of the cooling fan, and a shape of the air guide. By changing this guide = one percent direction, you can choose to direct the airflow to the inclined side of the air guide to expand the heat dissipation range, so that this creation has the effect of I ^ = for concentrated heat dissipation or installation design margin. There are k liters of overall heat dissipation efficiency and increase the group. Another purpose of this book is to provide a way to make the number of ribs in the air outlet = = the airflow σ diversion structure, as small as several radial diversions and at least one ring. Page 7 C: \ Logo-5 \ Five Continents \ PK9257M.ptd M245735 V. Creation instructions (3) Shaped diversion section, the effect of the cooling fan. According to the original wind wheel. The ribs have at least one second #direction wheel blade-shaped second radial guide, a first ring and a relative increase. [The embodiment is described in detail in order to make the document truly understandable.] This is a three-dimensional view of the air vent. Cross-section view of the diversion structure. Cross-section view of the diversion structure. Cross-section view of the diversion structure. The zigzag structure formed by the ribs can beautify and decorate the view. The air guide structure of the air outlet is connected to a shell to form a base and several ribs. The base is used to carry a radial radial connection between the housing and the base, and each of the base has a first radial diversion portion, a first annular 'flow'; and ¥ flow portion. The first and second radial flow guides are inclined relative to the fan, and the first annular flow guide is connected between the first and second flow guides. During the operation of the fan wheel, the first radial diversion guide and the second radial diversion guide can guide the bow 丨: flow direction wind pressure. The above and other purposes and features of the creation are described below with reference to the preferred embodiment of the creation. ^ Of the first embodiment of the cooling fan of this creation, the third figure shows the top view of the first embodiment of the creation; the fourth figure shows the creation; the fifth figure shows the second embodiment of the creation ^ of the view, Figure 6 reveals this creation; Figure 7 reveals the top view of the third embodiment of this creation, Figure 8 reveals this creation, and Figure 9 reveals the fourth embodiment and advantages of this creation.

Out of the cooling fan at the air outlet duct. Out of the cooling fan along A-A in Figure 3. Out of the cooling fan along b-B in Figure 5. Out of the cooling fan along C-C in Figure 7.

M245735 V. Creation description (4) A perspective view of the air duct guide structure; and Fig. 10 reveals a top view of the air duct guide structure of the cooling fan in the fourth embodiment of this creation. Part of the components of the air-guiding structure of the cooling fan of this creation are the same as the housing structure of the conventional cooling fan in Figure 1. Therefore, the same parts are marked with the same drawing number, and their structures and functions will not be described in detail. Please refer to Figs. 2 to 4, the air guide structure of the air outlet of the cooling fan in the first embodiment of this creation includes a housing 10 and an air inlet! i. One air outlet 1 2. One base 13 and several ribs 1 4. The casing 10 may be made of plastic or metal. The air inlet 11 and the air outlet 12 are formed on both sides of the casing 10, respectively. The base 13 is located on the air outlet 12 side of the housing 10, for accommodating a wheel 20 [as shown in FIG. 4]. The ribs 14 are connected radially and concentrically between the housing 10 and the base 13. The rib 14 is preferably in a zigzag shape, that is, the rib 14 is provided with at least a first radial diversion portion 1 41, a first annular diversion portion 1 42, and a second radial diversion Department 1 4 3. The first and second radial guide portions 141 and 143 are inclined, and the inclination angle thereof is positively related to the inclination angle of the blades 21 of the fan wheel 20 q. The inclination angles of the first and second radial flow guiding portions 1 4 1 and 1 4 3 can be selected to be the same or different. The first ring-shaped air guiding portion 1 42 is parallel to the axial direction of the air outlet 12 of the cooling fan and is formed on the same concentric circle. In addition, the casing 10, the base 13 and the ribs 14 can be made by integral molding, but they can also be combined by combination. Please refer to FIG. 4 again, which illustrates a schematic diagram of the airflow guiding action of the ribs 14 of the first embodiment of the present invention. When the fan wheel is running, 'the blades 21 of the fan wheel 20 can draw in airflow through the air inlet 11 of the casing 10, and let the airflow be discharged from the air outlet 12 in order to dissipate an object (not shown) Show

C: \ Logo-5 \ Five Continents \ PK9257M.ptd Page 9 M245735 V. Creative Instructions (5) Such as heat sink fins or CPU] for heat dissipation. When the airflow passes through the ribs 14 of the air outlet 12, since the inclination angles of the first and second radial deflectors 141, 143 of the ribs 14 are positively related to the inclination angles of the blades 21, the first And the second radial flow guides 141 and 143 can guide the airflow more smoothly to the bottom of the air outlet 12 to reduce the turbulence and turbulence caused by the airflow through the ribs 14 To reduce wind-cut noise and relatively increase wind pressure. Furthermore, the first annular air guide portion 142 of the rib 14 can separate the inner air flow near the center of the air outlet 12 and the outer air flow near the outer diameter range of the air outlet 12. In particular, when the first and second radial diversion parts 1 41 and 1 4 3 form different inclination angles, the first annular diversion part 1 4 2 can effectively reduce the probability that the inner and outer airflows interfere with each other. . In addition, the ribs 14 are formed into a zigzag structure by the first radial flow guide portion 141, the first annular flow guide portion 142, and the second flow guide portion 143, which can also beautify and decorate the cooling fan relatively, Enhance the added value of cooling fans. Yanyue ❹5ffi households show-suppress small individual 1 卞 the first χ her case The air duct diversion structure of the hot fan. Compared with the first embodiment, the ribs 14 of the second embodiment further make the first ring-shaped air guide portion 142 relatively out of the air outlet ′ 12, and form an outer radial tilt J in the axial direction. In this way, in addition to the first and second radial diversion parts 141 and 143, the airflow can be smoothly guided and the nodal ring-shaped diversion part 142 for reducing noise can simultaneously guide the airflow to the air outlet '丨 2' " The outer diameter range. Therefore, not only can the heat dissipation range be relatively expanded, but also the fan can be applied to the limited assembly space (for example, in the notebook electric tooth w) to guide the airflow to be not directly below the air outlet 12 : Disperse objects, or make the cooling fan suitable for large-sized objects to be cooled ^

M245735 V. Creative Instructions (6) More uniform heat dissipation. Therefore, the ribs 14 of this creation do have the effect of directing airflow. Furthermore, as shown in FIG. 6, following the inclination direction of the first annular diversion portion 1 4 2, the first annular diversion portion 1 4 2 can be relatively reduced in diameter near the air outlet 12. The cross-sectional area on the air outlet side of the range, so the first annular diversion portion 1 4 2 also has the effect of increasing wind pressure. On the other hand, since the airflow outside the outer diameter range near the air outlet 12 has been pressurized, it can also relatively urge the inner air flow near the center of the air outlet 12 to flow radially outward, thereby increasing the efficiency of the heat radiation airflow. Please refer to Figs. 7 and 8 again, which reveals the air guide structure of the air outlet of the heat dissipation fan according to the third embodiment of the present invention. Compared with the first and second embodiments, the ribs 14 of the third embodiment further incline the first annular air guide portion 1 2 2 with respect to the axial direction of the air outlet 12 in the inner radial direction. In this way, in addition to the first and second radial diversion parts 1 4 1 and 1 4 3 to smoothly guide the airflow and reduce noise, the first and second annular diversion parts 142 can simultaneously guide the airflow. Lead to the position directly below the base 13. Therefore, the heat dissipation efficiency of the object to be dissipated directly below the base 13 is relatively increased. Furthermore, as shown in FIG. 7, following the inclination direction of the first annular diversion part 1 42, the first annular diversion part 1 4 2 can be relatively narrowed near the center of the air outlet 12. The cross-sectional area on the air outlet side, so the first annular diversion portion 1 4 2 also has the effect of increasing wind pressure. On the other hand, since the inner airflow near the center of the air outlet 12 has been pressurized, it can also relatively promote the airflow radially inward near the outer diameter range of the air outlet 12 to increase the efficiency of the heat dissipation airflow. . Please refer to FIG. 9 and FIG. 10 again, which disclose the fourth embodiment of the present invention.

C: \ Logo-5 \ Five Continents \ PK9257M.ptd Page 11 M245735 V. Creative Instructions (7) The air-guiding structure of the air outlet of the cooling fan. Compared with the first to third embodiments, the ribs 14 of the fourth embodiment are also formed in a zigzag shape, but the ribs 4 and 4 are further provided with a second annular flow guide portion 144 and a third radial flow guide. Department 丨 45. The first, first, and second radial diversion portions 1 4 1 ′ 1 4 3, 1 4 5 are inclined, and their inclination angles are also positively related to the inclination angles of the blades 21 of the fan wheel 20. The inclination angles of the first, second, and radial diversion parts 1 4 1, 1, 4 3, 1 4 5 can also be selected to form the same or different. Relative to the axial direction of the air outlet 丨 2 of the cooling fan, the first and second annular flow guides 1 2 4 and 1 4 4 can also be formed to form parallel, outer radial tilt or inner radial tilt according to requirements. In addition, the second annular diversion sections 42 and 144 are also formed on another concentric circle. Thereby, the first, second, and third radial air guide portions 141, 143, and 145 can smoothly guide the airflow to reduce wind-cut noise. At the same time, the first and second annular diversion sections 丨 4 2, 1 4 4 can choose to direct the airflow to the outer diameter range of the air outlet 12 or directly below the base 13 to concentrate heat dissipation. Airflow, and relatively increase the heat dissipation efficiency of the object to be dissipated in a specific location. Furthermore, along the inclined directions of the first and second annular diversions ^ 1 2 and 1 4 4, the cross section on the wind side can also be relatively reduced [see Figures 6 and 8], so the The first and second annular diversion sections 1 4 2 and 1 4 4 also have the effect of increasing wind pressure. In addition, as shown in Figs. 2 to 10, this creative system can guide the airflow direction through a plurality of radial flow guides 141, 143 and a plurality of annular flow guides 142, and the radial flow guide 1 41, 1 4 3, and the number, inclination direction, and inclination of the ring-shaped guide portion 1 4 2 can be determined according to the size, setting position of the blade 21 of the fan wheel 20 and the object to be radiated (such as fins), The shape and heat dissipation requirements are changed, so the margin of assembly and design can be relatively increased.

C: \ Logo-5 \ Five Continents \ PK9257M.ptd Page 12 M245735 V. Creative Instructions (8) As mentioned above, 'Compared to the conventional cooling fan shown in Figure 丨 the casing of the conventional cooling fan is prone to turbulence and chaos at the air outlet. And the inability to guide the airflow direction and increase the wind pressure, the original creation of Figure 2_ can indeed be formed by the ribs of the air outlet 12 "to form a number of radial flow guides 141, 143 and a number of ring-shaped guides The flow part 142, and the air outlet 12 has the functions of guiding the airflow direction, concentrating the airflow, and expanding the divergence. Niu low wind cuts this book and increases the margin of the assembly design. Anyone who is familiar with this technique can make various changes within the limits of Asia, Africa, and Africa; the spirit of repair and the scope of the patent application as defined in the appendix are the protection scope of the original creation.

IBM Page 13 C: \ Logo-5 \ Five Continents \ PK9257M.ptd M245735 Schematic description [Schematic diagram 1 figure 2 figure standing. Body figure 3 figure above view 4 figure 5 figure Top view 6th figure 7th top view 8th figure 9th perspective view 10th figure top view]: A perspective view of the casing structure of a conventional cooling fan. : Diversion structure of the air outlet of the cooling fan in the first embodiment of this creation 〇: Diversion structure of the air outlet of the cooling fan in the first embodiment of this creation 〇: Cross-sectional view along line A-A of FIG. 3 in this creation. : The air-guiding structure of the air outlet of the cooling fan in the second embodiment of this work. • This work is a cross-sectional view taken along line B-B in Figure 5. : The air-guiding structure of the air outlet of the cooling fan in the third embodiment of the present invention: A cross-sectional view along line C-C of FIG. 7 of this project. : Structure drawing of the air outlet of the cooling fan in the fourth embodiment of this creation: Drawing of the air outlet of the cooling fan in the fourth embodiment of this creation 0 Drawing number description: 12 air outlets 1 41 first radial air guide 1 4 3Second radial deflector 1 4 5 Third radial deflector 10 Housing 11 Air inlet 13 Base 14 Rib 142 First annular deflector 144 Second annular deflector

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Claims (1)

M245735 A guide structure for the air outlet of a cooling fan is provided. It is attached to a casing air outlet and is provided with a base: which is used to carry a fan wheel. The fan wheel has several blades. Between the seats, each j-rib is provided with at least a first radial flow guide, a first annular flow guide, and two radial flow guides. The first and second radial flow guides are It is inclined with respect to the axial direction of the air outlet of the cooling fan, and the first ring-shaped flow guide is connected between the first and second radial flow guides. The air flow part, the annular air flow part, and the second radial air flow part can guide the airflow direction and increase the wind pressure relatively. 2. According to the air guide structure of the air outlet of the cooling fan according to item 1 of the scope of the patent application, wherein the dip angles of the first and the first radial air guides are the same. According to the air guide structure of the air outlet of the cooling fan according to item 1 of the scope of the patent application, the inclination angles of the first and second radial air guides are different. I. According to the air outlet guide structure of the cooling fan according to item 1 of the scope of the patent application, the first annular guide portion of each rib is formed in the same concentric circle. Air-guiding structure of the air outlet of the cooling fan 2. The cooling fan according to item 1 of the scope of the patent application, wherein the first annular flow guide portion is formed to be inclined outwardly with respect to the axial direction. 6. The cooling fan according to item 1 of the scope of the patent application, wherein the first annular flow guide portion is formed to be inclined inwardly with respect to the axial direction. 2. Cooling fan according to item 1 of the scope of patent application M245735 6 10 11 12 Patent application scope: ϋ f The rib is additionally provided with a second ring-shaped flow guide and a third radial direction. The second ring-shaped flow guide and the third radial flow guide are connected to each other. Between the 2 2 彳 f deflector and the casing. 2. The air outlet guide structure of the cooling fan according to item 7 of the scope of the patent application, wherein the angles of the first, second and third radial diversion sections are the same. The diversion angle of the air outlet of the cooling fan is different. The inclination angles of the first, second and radial diversion sections are different. The shape of the flow guide is formed in the same as above. According to the air guide of the cooling fan according to item 7 of the scope of the patent application, wherein the second annular guide is formed with an outward radial tilt relative to the axial direction of the fan's air. According to the airflow guide of the cooling fan according to item 7 of the scope of the patent application, the second annular flow guide is formed with an inner radial tilt relative to the axial direction of the airflow of the cooling fan. Structure 〇 Structure Heart Circle Structure Mouth Structure 1. Mouth Structure C: \ Logo-5 \ Five Continents \ PK9257M.ptd Page 16