TWI232722B - Housing for a heat dissipating fan - Google Patents

Abstract

A housing for a heat dissipating fan comprises an annular wall and a plurality of auxiliary air-inlet holes. The annular wall is defined an air inlet and an air outlet at its two ends, and provided with a base therein for combining with a stator and a rotor having a plurality of blades. The auxiliary air-inlet holes are symmetrically formed on the annular wall. In operation, the blades of the rotor can stably suck air into the housing from the air inlet and the auxiliary air-inlet holes simultaneously so as to relatively increase airflow and reduce air noise.

Description

1232722 P. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a housing structure for a cooling fan, and more particularly, to set a plurality of auxiliary air inlet holes on a ring to increase the air intake of the fan and Cooling fan housing structure to reduce wind-cut dullness. [Prior technology] As shown in Figure 1, the conventional axial-flow cooling fan structure mainly includes / sets a seat 10, a stator 20, and a rotor 30. The housing seat 10 is formed by a square ring wall 11 An air inlet 12 and an air outlet 13, and a base 14 is provided on the side of the air outlet 13; and the stator 20, the rotor 30 is rotated, and the airflow cause structure can be easily passed from the air inlet 1 2 Caliber The wind side and the outlet of the bad wall 11 are further constructed into a seat 14 and a rotor 30. Do this in order to suck from the order and the mouth 1 2. In addition, the inner wall side is sometimes provided with the scattered ribs, which makes the leaf tuyere 13 easy to manufacture into the airflow, and the hot fan is often formed in the scattered 15; several leaves 20 produce 31 pieces from the side The fan 20 is sent out to be wide, so the fan 20 can be fixed to the base plate 31, and the stator 20 can be fixed to the base piece 31, and the rotating combined magnetic field can be used to drive the air inlet 1 2 Side suction airflow,. Although the axial-flow cooling fan structure is widely used, only the intake air volume of the cooling fan is directly limited by the fin rotation, the end of the blade 31 and the current are disturbed, and the progress of the blade 31 is uneven. The above-mentioned lack of black occupancy and the static pressure-flow rate characteristic (PQ characteristic) perform poorly.

Another conventional axial-flow cooling fan structure, as shown in FIG. 2, the heat dissipation shell 10 is formed into a circular ring wall 11, and the ring wall is provided with a plurality of axial stacks. Ring plate 1 la, and at the same time, a narrow gap is formed between the ring plates 丨 la :,

C: \ Logo-5 \ Five Con inent s \ PK9249.ptd Page 6 1232722 V. Description of the invention (2) radial slots lib, so that the blades 31 of the rotor 30 of the cooling fan can be borrowed also The airflow is drawn into the slot 11 b and around the housing base 10 to increase the intake air volume. However, in fact, the radial airflow direction sucked by the radial slot 1b is almost 90% with the axial airflow direction of the air inlet. The right angle results in turbulence, that is, when the airflow flows between the blade 31 of the rotor 30 and the radial slot 1 1 b, it is easy to form turbulence and turbulence. Therefore, the addition of a radial slot 11 b to the heat sink fan can increase the air intake, but the degree of reducing the noise and improving the P-Q characteristics still needs to be strengthened. In addition, the ring plate 11a complicates the structure of the shell base 10, which is also not conducive to mass production manufacturing and accelerated manufacturing processes. Therefore, it is really necessary to further improve the housing structure of the conventional cooling fan. … Thermal efficiency, noise reduction, and in view of this, the present invention improves the above-mentioned disadvantages. It is provided with a plurality of auxiliary air intake holes in a symmetrical ring of the housing seat f of the heat dissipation fan. The amount of air intake, and the size of the circular or elliptical wheel friction of the auxiliary air inlet hole can further reduce the occurrence of turbulence, and improve the wind cut problem. Therefore, the present invention 4 can further improve the P-Q characteristics and simplify the structure. [Summary of the invention] The main purpose of the present invention is to connect the root fan from the u cooling fan to the ring wall of the shell seat =;:; the fan seat structure of the f fan, where the blades of the fan & The problem of holes 1 is scattered, which makes the present invention have the following advantages ::>, generating turbulence, and improving the second objective of the present invention; second, and the effect of reducing noise. The cooling fan is attached to the shell seat structure of the Erzheng heat fan on the ring of the shell seat, where several auxiliary air inlet holes are set back, and the subsidy

C: \ Logo-5 \ Five Continents \ PK9249.ptd

1232722 V. Description of the invention (3) The air inlet hole has an inclination angle, which is related to the inclination angle of the blades of the cooling fan, so as to reduce the turbulence between the blades of the cooling fan and the auxiliary air inlet holes to improve the wind cutting problem 'The invention has the effect of increasing the intake air volume and reducing the noise. Another object of the present invention is to provide a shell seat structure of a cooling fan, wherein the heat sink fan is mounted on the ring of the shell seat to install a plurality of auxiliary air intake holes, and the auxiliary air intake holes have gaps to allow quick access to the heat dissipation fan. The air inlet, thus reducing the occurrence of turbulence and improving the wind cut problem, makes the present invention have the effect of increasing the intake air volume and reducing the noise. Another object of the present invention is to provide a shell structure of a heat sink, wherein the shell of the heat sink can be made of a heat-conducting material, so that the heat sink can dissipate heat while sucking airflow, so that the invention has the effect of increasing the heat dissipation efficiency of the seat. . The shell seat structure of the cooling fan according to the present invention includes a ring wall and a plurality of auxiliary air inlet holes. An air inlet and an air outlet are respectively formed on two sides of the ring wall, and the ring wall is provided with a base 'on the side of the air outlet for combining a stator and a rotor. The auxiliary air inlet hole is symmetrically provided on the ring wall. When the rotor of the heat radiation fan is running, several blades of the rotor can be sucked into the stable airflow by the air inlet and the auxiliary air inlet at the same time, so as to increase the air intake and reduce the wind-cut noise. [Embodiment] In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention and the accompanying drawings in a, as follows:

1232722 V. Description of the invention (4) Figure 3 shows the structure and perspective view of the housing seat of the heat sink of the first embodiment of the present invention; Figure 4 shows the cross-sectional view of the present invention along the line A_A of Figure 3; FIG. 5 illustrates an exploded perspective view of the housing structure of the heat sink of the second embodiment of the present invention; FIG. 6 illustrates a cross-sectional view of the present invention taken along line Bb of FIG. 5; and FIG. 7 illustrates the heat sink of the third embodiment of the present invention. An exploded perspective view of the shell seat structure; FIG. 8 illustrates a cross-sectional view of the present invention taken along line c-c of FIG. 7; FIG. 9 illustrates an exploded perspective view of the shell seat structure of a heat sink of a fourth embodiment of the present invention; FIG. A cross-sectional view of the present invention taken along the line dD of FIG. 9 is shown; FIG. 11 is an exploded perspective view of the housing structure of the heat sink of the fifth embodiment of the present invention; and FIG. Fig. 3 shows an exploded perspective view of the housing structure of a heat sink according to a sixth embodiment of the present invention; and Fig. 14 shows a cross-sectional view of the present invention taken along line F-F of Fig. 3. The components of the shell seat structure of the cooling fan according to the present invention are the same as those of the conventional axial-flow heat sink fan structure shown in Figures 1 and 2. Therefore, the same parts of the two are marked with the same drawing numbers, and their structures and functions are no longer given. More details. __ As shown in Figure 3, the cooling fan of the first embodiment of the present invention includes

A shell base 10, a stator 20 and a rotor 30. The shell base 10 is provided with a ring wall U, an air inlet 12, an air outlet 13, a base 14, a plurality of ribs 15, and a plurality of auxiliary air inlets 16. The ring wall 11 is square, and the two sides of the ring wall 11 form the air inlet 12 and the air outlet 1 3; the base 14 is connected to the air outlet 13 side of the ring wall 11 by using the ribs 15 and the base The seat 14 is provided for combining the stator 20 and the rotor 30 °, and the auxiliary air inlet hole 16 is symmetrically arranged on the ring wall 11. The auxiliary air inlet hole 16 can form an auxiliary air inlet of the housing seat 10, In addition, the auxiliary air inlet hole 16 has a circular aperture profile, which enables the airflow to enter the ring wall worker smoothly.

C: \ Logo-5 \ Five Continents \ PK9249.ptd Page 9 1232722 5. Description of the invention (5) Internal bite, and f is helpful to reduce spoil, turbulence and wind-cut noise. As shown in Shiming 4 5, when the cooling fan of the first embodiment of the present invention is operated, the blade 3 1 can pass through the air inlet 12 and the auxiliary inlet ^ in = flow at the same time. On the one hand, the blade 31 of the rotor 30 is capable of drawing in a radial airflow through the n ^ ^ axial flow, and on the other hand, the blade 31 can also draw in a radial airflow through the auxiliary air inlet 16. At the same time, at the intersection of the axial, grasping, and radial airflow, the radial direction sucked in by the auxiliary air inlet hole 6 is gradually changed from radial guidance to axial direction, so the flow of the radial airflow is The axial airflow direction of the air inlet 12 tends to be the same, and the radial airflow is "namely, the turbulence between the blades 31 of the sub 30 can be reduced to improve the wind cutting problem. Therefore, the invention can indeed By using the auxiliary air inlet hole 16 to increase the total air intake s, it is possible to effectively prevent turbulent flow and turbulence due to the collision of axial and radial air flows. In addition, since the auxiliary air inlet 6 can additionally provide airflow & to prevent the phenomenon of uneven airflow density on the air inlet side and the air outlet side of the blade 31, so the present invention can also reduce wind-cut noise, And improve the static pressure-fiow rate characteristic [PQ characteristic] ° Furthermore, as shown in Figs. 3 and 4, the present invention preferably forms one on each wall surface of the annular wall u. The auxiliary air inlet holes 16 and the auxiliary air inlet holes 6 are preferably formed at the center of each wall surface of the ring wall 11. On the other hand, the present invention can also choose to reduce the size of the auxiliary air inlet holes 6 according to product requirements, and form more than two auxiliary air inlet holes 16. At this time, in the present invention, two or more auxiliary air inlet holes 16 can be selectively arranged on the upper half of each wall surface of the ring wall 11 near the air inlet 12 side, so as to increase the blade 31 to use the auxiliary air inlet holes 6 Inspiratory airflow

1232722 V. The efficiency of invention description (6). In addition, when the shell base 10 is selected to be made of metal or composite, the shell base 10 can also use the ring wall to perform the heat dissipation efficiency of the material cooling fan. In addition, the increase of the shell of the present invention = the auxiliary air inlet 16 will not affect the overall structure of the shell seat 10. Please refer to Figs. 5 and 6, which disclose the second embodiment of the present invention.座 结构。 Block structure. Compared with the first embodiment, the second embodiment is formed in a square opening; 1, a plurality of auxiliary air inlet holes 16 are formed on the clothes 11 correspondingly. The auxiliary air inlet hole 16 has an elliptical profile, and the long axis of the ellipse is consistent with the two directions of the housing base 10. In this way, the auxiliary air inlet hole 16 can also be used to increase air intake and also allow airflow. Smooth passage to effectively avoid turbulence and turbulence caused by axial and radial gas-machine conflicts, so as to further increase the cooling efficiency of the fan. Furthermore, as shown in Figs. 5 and 6, the present invention preferably forms an auxiliary air inlet hole 16 on each of the private walls of the ring wall u, and the auxiliary air inlet hole 16 is formed relatively. At the center of each wall surface of the ring wall 11. On the other hand, the present invention can also choose to reduce the size of the auxiliary air inlet hole 16 ′ according to product requirements, and X forms two or more auxiliary air inlet holes 6 ′. At this time, in the present invention, the auxiliary air inlet holes 16 on the two squares can be selected and arranged on the upper half of each wall surface of the ring wall 11 to increase the blade 31 using the auxiliary air inlet holes 16 to suck in the airflow. effectiveness. In addition, when the casing base 10 is selected to be made of a thermally conductive material such as metal or alloy, the casing base 10 can also use the ring wall U for heat dissipation to further increase the heat dissipation efficiency of the heat dissipation fan. … Please refer to FIG. 7 and FIG. 8, which show the structure of the shell seat of the heat sink according to the third embodiment of the present invention. Compared with the first and second embodiments, the third embodiment ^

1232722 V. Description of the invention (7) Block 10 series T is in a circle: Zhi-ring ⑽ 'The ring mi is located on the upper half of the 12 side close to the air inlet, and the symmetrical ring with a large isometric foot is provided with a number of circles. The air intake hole 16 and the T-ring wall 11 form a base plate near the air outlet 13 ". The auxiliary air intake hole 16 can also be used to increase the amount of air intake, and it can also be passed to effectively avoid the shaft To you & >, Gu Ba 丄 L ^ Axial and radial airflow conflicts to form chaos and disturbances, in order to further increase the heat dissipation efficiency of the cooling fan. Furthermore, the peripheral edge of the base plate 17 of the housing 1G A plurality of positioning holes 丄 8 can be formed at appropriate positions to increase the assembly convenience of the heat sink. Referring to Figures 9 and 10, it discloses the housing structure of the heat fan of the present invention. Compared with the third embodiment ， Mu-shaped ring wall " The upper equally spaced ring is provided with several auxiliary inlets. The circular air inlet hole 16'has an oval shape, which is located on the upper half of the side of the auxiliary air outlet 12. And the auxiliary air inlet hole 2 = 'is further formed as an inclination *, the auxiliary air hole 16, t, the long axis is positive with the inclination of the blade 31 of the rotor 30 _. When the U angle is better moved, the blade 31 can more smoothly inhale the airflow along the rotor 30 with the rotor 30 to assist the air intake hole 16. As a result, the fourth Λ inclination angle of the present invention is supplemented by an increase in the air volume. And it can more effectively prevent the occurrence of turbulence, and the yoke example not only generates the density of airflow on the air inlet side and the air outlet side of the blade 31, avoids the low wind-cut noise, and improves the static pressure / velocity characteristics. Please refer to the phenomenon Figures 11 and 12 show the structure of the shell seat of the second heat fan of the present invention. Compared with the third embodiment, the circular auxiliary air inlet 16 is formed with two notches 161. 1 Example Tied into a 161, the auxiliary air inlet 16 can communicate with the cooling fan: the gap ν air outlet 12 because

C: \ Logo-5 \ Five Continents \ PK9249.ptd Explanation of the invention on page 12 (8) This can make the auxiliary inlet H Ί π speed Hnw = σ12 the direction and flow of the two air flows. The air holes 16 and the air inlet 12 reduce the occurrence of turbulence to improve the wind cutting problem. "':: shown in Figs. 13 and 14', it discloses the fan seat structure of the sixth embodiment of the present invention. The phase is in the end. The door and the phase are separated. The sixth embodiment is implemented by the younger brother. The sixth embodiment is an elliptical auxiliary air inlet 16 to form a gap 161. Through the notch 161, the auxiliary air inlet 16 can be connected to the air inlet of the cooling fan. ^ This can also make the auxiliary air inlet 16 and the air inlet 12 flow direction and velocity tend to ... To further reduce the turbulence caused by the auxiliary No. 1 problem between the air inlet 12 and the blade 31 to improve the wind & No. 2: Compared with the conventional axial flow fan housing Γ of Figs. 1 and 2 to the limit ' And it is easy to produce turbulence, turbulence and noise. The structure of the shell seat of the cooling fan of the present invention shown in FIG. 3 can indeed be provided with a plurality of auxiliary air inlet holes 16, and it has an increased air intake. The effect of improving PQ characteristics and increasing heat dissipation efficiency. Low cattle smoke: Although the invention has been disclosed in a preferred embodiment, it is not intended to limit the qualifications. Anyone skilled in this art can make various changes and modifications without departing from the essence of the invention. For this reason, the scope of the present invention: the scope of the invention is determined by the scope of the attached patent application. Siege

1232722 Brief description of the drawings [Simplified drawings 1st figure 2nd figure 3rd perspective view. Figure 4 Figure 5 A perspective view. Figure 6 Figure 7 A perspective view. Figure 8 Figure 9 A perspective view. 10th, 1st, and 1st exploded perspective views 1st, 2nd, and 13th exploded perspective views. 1st 4th single explanation] An exploded perspective view of a conventional axial-flow cooling fan structure. An exploded perspective view of another conventional axial cooling fan structure. Decomposition of the housing structure of the heat sink of the first embodiment of the present invention: The present invention is a cross-sectional view taken along line A-A in FIG. 3. : Decomposition of the housing structure of the heat sink of the second embodiment of the present invention: A cross-sectional view of the present invention taken along line B-B of FIG. 5. : Exploded view of the structure of the heat sink of the third embodiment of the present invention. Sectional view of the present invention along the line C-C of FIG. 7: Exploded view of the structure of the heat sink of the fourth embodiment of the present invention. D-D sectional view of FIG. 9. Figure: The structure of the housing of the cooling fan in the fifth embodiment of the present invention. Figure: The cross-sectional view of the present invention taken along the line E-E of Figure 11. Figure: The structure of the shell seat of the heat sink in the sixth embodiment of the present invention. Figure: The sectional view of the present invention taken along the line F-F of Figure 13 of the present invention. «Drawing number description: 10 shell seat 11 ring wall 11 a ring plate

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Claims (1)

1232722 6. Scope of patent application 1. A shell seat structure of a cooling fan, including a ring wall, which is provided with an air inlet and an air outlet, and a base is arranged on the side of the air outlet to combine a stator and a rotor ; And a plurality of auxiliary air inlet holes, the ring of which is arranged on the ring wall, when the rotor is running, several blades of the rotor can simultaneously draw in a stable airflow from the air inlet and the auxiliary air inlet to increase the air intake. The air volume and the reduction of wind-cut noise are in accordance with the structure of the shell seat of the cooling fan described in item 1 of the patent application scope, wherein the auxiliary air inlet hole is formed in a circular shape. According to the structure of the shell seat of the cooling fan according to item 1 of the patent application scope, wherein the auxiliary air inlet hole is formed in an oval shape. The structure of the moon seat is based on the elliptical long axis of the auxiliary air inlet hole and the axial direction of the shell seat described in item 3 of the scope of the patent application. The structure of the shell seat of the cooling fan, in which the elliptical long car far from the auxiliary air inlet is tilted in a direction relative to the car of the ring gall. < The housing structure of the cooling fan according to item 5 of the scope of patent application, among them. The long and fine frequency angle of the enlarged circular shape of the auxiliary air inlet has a positive correlation with the inclination angle of the forbidden piece of the rotor. The housing base of the cooling fan described in the first item of the scope is far away, wherein the auxiliary rolling hole is symmetrically arranged on the ring wall. 2. According to the cooling fan described in item i of the patent application: the base, which * the auxiliary air inlet hole is formed near the ring wall C: \ Logo-5 \ Five Continents \ PK9249.ptd Page 16 1232722 6. Scope of Patent Application Location. 9. According to the application, the auxiliary tuyere. 10. According to the ring wall of the applied junior high school 11, according to the ring wall of the applied junior high school 12, formed by the edge of the shell seat of the applied junior high school 13, as described in item 1 of the range of auxiliary air intake of the shell of the applied junior high school The shell seat structure of the cooling fan has a notch formed in the air inlet hole to communicate with the shell seat structure of the cooling fan described in item 1 of the profit margin of the ring wall, which is square. The structure of the housing base of the cooling fan described in item 1 of the profit range is circular. The structure of the shell seat of the cooling fan according to item 11 of the utility model is that a substrate is formed near the air outlet side, and the substrate has a plurality of positioning holes. The structure of the shell of the cooling fan described in Item 1 of the scope of interest is made of thermally conductive material, so that the cooling fan can draw air through the hole and use the ring wall to dissipate heat. « C: \ Logo-5 \ Five Continents \ PK9249.ptd Page 17