TWI616594B - Fan module and electronic device using the same - Google Patents

Abstract

A fan module and an electronic device using the fan module. The fan module includes a housing having a first surface, wherein the first surface is provided with a plurality of recessed pressure openings; the fan blade is pivotally disposed in the housing and is adapted to rotate in a rotation direction, wherein Each of the recessed pressurization openings is recessed from the first surface toward the interior of the housing along the direction of rotation; and a fan cover that is pivotally disposed within the housing by the fan cover.

Description

Fan module and electronic device using the same

The present invention relates to a module and device, and more particularly to a fan module and an electronic device using the fan module.

The fan is the most widely used and most effective heat sink in electronic devices. The fan is an active cooling technology. Generally, the air inlet of the fan is designed. The airflow enters from the fan cover opening at the center of the fan module and is provided with a fan cover. Therefore, the airflow is vertically sucked into the fan from the opening of the fan cover. The gas is then pushed by the rotation of the blade near the portion of the fan cover to force a change in the direction of the air flow.

1A is a schematic view of a conventional fan module, and FIG. 1B is a cross-sectional view of the fan module taken along the line I-I of FIG. 1A. Referring to FIG. 1A and FIG. 1B simultaneously, as described above, the airflow is vertically sucked into the fan module 100 from the fan cover opening 110. However, it is known that those skilled in the art continuously measure and simulate the airflow. The left side of the fan module 100 has a large amount of air intake, but there is a significant air leakage phenomenon in the right side of the fan module 100. Therefore, the fan module 100 is roughly divided into a left air inlet area and a right air leakage area, wherein the air leakage occurs. The generation of the zone is not what the designer expects and will affect the overall heat dissipation of the fan module.

In addition, after the airflow in the vertical suction fan enters the casing 120, the direction of the airflow is forcibly changed to rotate along the rotation direction of the blade 130 as the blade 130 rotates, and along with the contour of the blade 130. It flows outward from a portion close to the fan cover 140 toward away from the fan cover 140. During this process, the gas is twisted and squeezed, causing the airflow to rub against the fan blade 130 and the housing 120 of the fan, creating noise that easily affects the overall operation of the electronic device that causes the fan module 100 to be used.

The invention provides a fan module with low noise and good heat dissipation effect.

The present invention provides an electronic device with good performance.

A fan module of the present invention includes a housing having a first surface, wherein the first surface is provided with a plurality of recessed pressurized openings; and a fan blade is pivotally disposed in the housing for being suitable for the direction of rotation Rotating, wherein each of the recessed press openings is recessed from the first surface toward the inside of the housing; and a fan cover, the fan blade being pivoted by the fan cover Inside the housing.

In an embodiment of the invention, the recessed pressurizing opening is radially disposed at least partially along a circumferential direction of the fan cover.

In an embodiment of the invention, the first surface has an air inlet zone and a sealing zone, the recessed pressure opening is disposed in the air inlet zone, and the sealing zone is sealed.

In an embodiment of the invention, the recessed pressurized opening includes a vane and an air inlet, the vane being recessed from the first surface toward an interior of the housing. The fan module further includes a plurality of protruding windshield openings corresponding to the air inlets of the recessed pressure openings. Each of the protruding windshield openings has a windshield and shares the same air inlet with the recessed pressure opening, the windshield protrudes from the first surface, and the windshield and the recessed pressurized opening are located at the inlet Both sides of the tuyere. The windshield has a connecting portion and a parallel portion, the parallel portion being parallel to the first surface, and the connecting portion is coupled between the parallel portion and the first surface. The air inlet is rectangular or curved along a radial direction of the fan cover.

In an embodiment of the invention, the first surface has a fan cover opening and the fan cover is located in the fan cover opening. The housing further has an extension that covers and seals the fan cover opening.

In an embodiment of the invention, the fan blade includes a rotating shaft and a blade, the fan cover is fixed to the rotating shaft, and the blade is radially connected to the rotating shaft along a circumference of the rotating shaft. And the blade has an equal area from one end connected to the rotating shaft to the other end away from the rotating shaft.

An electronic device includes a body and any one of the foregoing fan modules mounted in the body.

In an embodiment of the invention, the electronic device further includes a display electrically connected to the body.

Based on the above, the performance of the fan module is improved and the noise during operation is reduced. In addition, the electronic device using the fan module can have a good heat dissipation effect and can have a long service life.

The above described features and advantages of the invention will be apparent from the following description.

The invention is intended to provide an innovative fan module, wherein the structure of the original components in the fan module can be improved to achieve noise reduction, increased air volume or wind pressure to improve the performance of the fan module, thereby allowing The electronic device using the fan module can operate well, and the life of the electronic device can be prolonged because of good heat dissipation. The electronic device and the fan module used therein will be described in detail below.

2 is a schematic diagram of an electronic device. Referring to FIG. 2, the electronic device 200 of the embodiment is a notebook computer, but may also be a desktop computer, an all-in-one computer or a tablet computer, etc., and is not limited to a notebook computer. The electronic device 200 includes a body 210 and a fan module 220 installed in the body. The body 210 is a host of a notebook computer, but may also be a host of a desktop computer or a host of an all-in-one computer, etc., and the like. The device 200 may further include a display 230 electrically connected to the body 210, wherein the display 230 displays the processed information via the central processing system disposed inside the body 210 in an image, text or other manner. In addition, other peripheral expansion accessories such as printers, keyboards, mice, headphones, and the like can be selectively disposed as needed.

3A is a perspective view of a fan module. Please refer to FIG. 2 and FIG. 3A at the same time. The fan module 220 installed in the body 210 of the electronic device 200 includes a housing 222, fan blades 224 (shown in FIG. 3C), and a fan cover 226. The housing 222 is made of, for example, metal. Considering the structural rigidity and the overall weight of the electronic device, the housing 222 can be made of a rigid and lightweight metal. Of course, based on other considerations, the housing 222 can also be made of plastic. The housing 222 has a first surface 222a on which a plurality of wind guiding structures for accomplishing the objectives of the present invention are disposed. The fan blades 224 may be made of metal or plastic. The fan blades 234 may be separate components from the fan cover 226 and assembled to be fixed together, or the fan blades 234 may be in the same manufacturing process as the fan cover 226. Formed in one piece. The fan blade 224 is mounted in the housing 222 through the fan cover 226, and the fan blade 224 is rotated by the fan cover 226 as a rotation axis. The wind guide structure is radially disposed along the circumferential direction of the fan cover 226 to introduce the wind flow into the housing 222 while the fan blades 224 are in operation. Specifically, the air guiding structure extends from the fan cover 226 or the fan cover opening 222b of the first surface 222a of the housing 222 (described in detail later) toward the fan cover 226 or the fan cover opening 222b, and is viewed from above. Viewed, the shape of the wind guide structure is generally similar to the shape of the fan blade 224.

In the above, the fan blade 224 includes a rotating shaft 224a and a blade 224b, wherein the fan cover 226 is fixed to the rotating shaft 224a, and the blade 224b is radially connected to the rotating shaft 224a along the circumference of the rotating shaft 224a, and the rotating shaft 224a is connected to the power source. (not shown), therefore, when the power source is powered, the rotating shaft 224a is driven to rotate, thereby driving the blades 224b to rotate. The fan module 220 of the present invention utilizes the wind guiding structure to achieve the aforementioned noise reduction, increased air intake or wind pressure to improve performance. Various embodiments of the wind guiding structure and the effects thereof can be further explained below. [First Embodiment]

3B is a plan view of FIG. 3A, and FIG. 3C is a schematic view taken along line III-III of FIG. 3A. Referring to FIG. 3A, FIG. 3B and FIG. 3C simultaneously, in the first embodiment, the wind guiding structure is a protruding windshield opening (not shown), wherein each protruding windshield opening (not labeled) has a stamping metal, for example. The housing 222 forms a windshield 252 and an air inlet 254, and the windshield 252 protrudes from the first surface 222a and enables wind to enter the air inlet 254. Further, in the rotational direction of the fan blade 224, the air inlet 254 is located on the upstream side and the windshield 252 is located on the downstream side, so that the windshield 252 can well block the wind flow and more capture the wind flow. In detail, if the fan blades 224 are set to rotate counterclockwise, in the counterclockwise direction, each of the air inlets 254 is positioned before the windshield 252; conversely, when the fan blades 224 are set to rotate clockwise, along the clockwise direction Each air inlet 254 is in front of the windshield 252.

4 is a partial schematic view of the fan module and the wind flow of FIG. 3A. Referring to FIG. 3A, FIG. 3C and FIG. 4 simultaneously, the windshield 252 is substantially in the shape of a soccer goal, and the windshield 252 is only open to the portion connected to the air inlet 254, and the remaining portion is closed. 3C and 4, the windshield 252 has a connecting portion 252a and a parallel portion 252b, wherein the parallel portion 252b is parallel to the first surface 222a, and the connecting portion 252a is connected between the parallel portion 252b and the first surface 222a, that is, the windshield The cross-section of the first surface 222a and the first surface 222a are substantially U-shaped, wherein the connecting portion 252a may be inclined to the first surface 222a or perpendicular to the first surface 222a. Along the radial direction of the fan cover 226, the air inlet 254 has a rectangular shape, and the shape of the windshield 252 varies with the shape of the air inlet 254. As shown in FIG. 3B, when the fan module 220 is viewed from above, when the air inlet 254 has a rectangular shape, the windshield 252 is also rectangular; when the air inlet 254 is curved (as shown in FIG. 5), the windshield 252 also follows the air inlet 254. It is curved (as shown in Figure 5). The air inlet 254 has a longitudinal direction when it is rectangular or curved. The air inlet 254 can be radially disposed obliquely to the radial direction of the fan cover 226. Of course, it is also conceivable to make the air inlet 254 be of its length. The direction is radially arranged parallel to the radial direction of the fan cover 226.

It should be noted that the fan module 220 of the embodiment may have the same structure as the conventional fan module 100, that is, the first surface 222a of the housing 222 has a fan cover opening 222b, and the fan cover 226 is located at the fan. In the cover opening 222b, the diameter of the fan cover opening 222b is larger than the diameter of the fan cover 226. In other words, there is a gap between the fan cover 226 and the edge of the fan cover opening 222b, and wind flow enters the housing 222 via this gap.

In the above, when the fan blade 224 rotates with the rotating shaft 224a as the center of rotation, the wind flow not only enters the air through the gap between the fan cover 226 and the edge of the fan cover opening 222b, but also enters the wind by the protruding windshield opening, thus In the conventional fan module 100, the air intake of the fan module 220 of the present embodiment is increased, and the heat dissipation performance of the fan module 220 can be effectively improved.

Further, when the fan blade 224 rotates (for example, rotates counterclockwise), the wind flow is caused to enter the housing 222 from the air inlet 254, wherein the windshield 252 protruding from the first surface 222a is located at the front end of the wind flow, and by the windshield 252 Shaped like a soccer goal, the windshield 252 effectively traps the wind and prevents the wind from escaping. In addition, since the design of the windshield 252 is an air flow caused by the rotation of the fan blade 224, the gas which is easily leaked from the blade surface 224b is also stopped by the windshield 252, and is brought back to the inside of the casing 222, thereby reducing air leakage. The phenomenon.

In addition, while the wind flow is brought into the housing 222 due to the rotation of the fan blades 224, the contour of the windshield 252 also provides the effect of guiding the wind flow. As shown in FIGS. 3C and 5, the wind flow may enter the housing 222 obliquely along the contour of the windshield 252, and then be pushed by the fan blade 224 along the direction of rotation of the blade 224b and brought toward the fan blade 224 from closer to the center. The edge is out of the wind. Compared with the conventional fan module 100, the wind is inflow perpendicular to the first surface 120a, so that the wind flow causes the housing 222 and the fan blade 224 to vibrate to cause noise when the flow direction is forcibly changed by the fan blade 224, and is guided by the contour of the windshield 252. The airflow is more smoothly in contact with the fan blades 224, thereby reducing the friction between the wind flow and the casing 222 and the fan blades 224. The fan blades 224 can not only promote the airflow with less labor, but also effectively reduce noise.

In particular, the conventional fan module 100 mainly enters the air vertically from the fan cover opening 110, so the shape of the blade is smaller near the fan cover 140 and larger than the fan cover 140 (Fig. 6A). The fan module 220 of the present embodiment is provided with a protruding windshield opening on the first surface 222a, and the air inlet of the fan module 220 is not limited to being limited to the air. The fan cover opening 222b is located at one location, so that the area of the blade 224b of the fan blade 224 from the one end connected to the rotating shaft 224a to the other end away from the rotating shaft 224a can be maintained equal (as shown in FIG. 6B), that is, the area of the blade 224b of the present embodiment is relatively small. The blades of the conventional fan module 100 are enlarged, so that the amount of air that can be moved is increased, and the performance of the fan module 220 is indirectly improved.

In addition, in the case where the same air intake amount as that of the conventional fan module 220 (the diameter of the fan cover opening 222b is large) can be achieved, it is also conceivable to make the diameter of the fan cover opening 222b small. The provision of the raised windshield opening increases the air inlet path for the same amount of air intake. Moreover, the diameter of the fan cover opening 222b is small, indicating that the hole provided in the housing 222 is small, thereby enhancing the structural strength of the housing 222.

Incidentally, the raised windshield opening is disposed within the range of the fan blade 224. Specifically, the orthographic projection of the raised windshield opening at the bottom of the housing 222 may fall within the range of the orthographic projection of the fan blade 224 at the bottom of the housing 222. This is because the fan blades 224 cause forced convection when rotated, and can be regarded as a strong wind zone due to the large influence of forced convection at the range of the corresponding fan blades 224, and the influence of forced convection outside the range of the fan blades 224 Smaller and can be considered as a weak wind zone. If the raised windshield opening is in the weak wind zone, there may be airflow leakage.

Based on the above, the fan module 220 of the present embodiment is provided with a protruding windshield opening on the first surface 222a of the casing 222, which not only increases the amount of air entering the interior of the casing 222, but also improves the performance of the fan module 220. Therefore, the fan module is used. The electronic device 200 of 220 can operate well and has a long service life. In addition, the noise of the fan module 220 can also be reduced because the raised windshield opening guides the flow of wind into the housing 222 and is progressively pushed by the fan blades 224. [Second embodiment]

7A is a perspective view of a fan module according to a second embodiment of the present invention, and FIG. 7B is a schematic view taken along line VII-VII of FIG. 7A. Referring to FIG. 3A, FIG. 3C, and FIG. 7A and FIG. 7B, the architecture of the present embodiment is substantially the same as that of the foregoing first embodiment, and the significantly different improvement is that the wind guiding structure of the embodiment is in the first The surface 222a is provided with a plurality of recessed pressurized openings that are recessed toward the inside of the housing 222. The recessed pressurizing openings are disposed along at least a portion of the circumferential direction of the fan cover 226 and are radially arranged, and the range of the recessed pressurizing openings is also correspondingly located in the range of the fan blades 224. Another difference caused by the arrangement of the recessed pressurized openings is that the fan cover 226 can cover the fan cover opening 222b to seal the fan cover opening 222b.

In detail, the wind guide structure of the present embodiment is a combination of a vane recessed from the first surface 222a and an air inlet 254.

The conventional fan module 100 is provided with a vane 152 (shown in FIGS. 8A and 8B) on the fan frame 150 or on the blade to adjust the performance (PQ) curve of the fan module 100, so that the fan module 100 is from the original The high inlet air volume is adjusted to a high inlet air pressure so that the high inlet air pressure type fan module 100 can be applied to a system with poor air intake conditions or high impedance. In the present embodiment, the stationary blade 256 is disposed on the first surface 222a of the housing 222 and disposed adjacent to the air inlet 254, so that the fan frame 150 or the blade in the fan module 100 can be provided. By setting the same function of the vane 152, it is also possible to pressurize the wind flow introduced into the tuyere 254.

It should be noted that the first surface 222a of the casing 120 of the conventional fan module 100 has both air inlet and air leakage at the fan cover opening 222b, and thus is roughly divided into the air inlet area A and the air leakage area B. However, in the present embodiment, the high inlet air pressure is achieved by providing the concave vane 256 on the first surface 222a. In order to enhance the heat dissipation effect caused by the high air pressure, the recessed pressure opening is disposed in the air inlet area. A, the original air leakage area B can be sealed to form a sealing area C to prevent air leakage.

In particular, also to prevent air leakage, the housing 222 may be provided with an extension portion 228, and the extension portion 228 may cover the fan cover opening 222b to seal the fan cover opening 222b.

The fan cover opening 222b is covered by the fan cover 226, so that the housing 222 of the fan module 220 has a relatively complete structure, so that the strength of the housing 222 is stronger than that of the housing 222 of the first embodiment described above. . During the keyboard press test, the fan module 220 can be prevented from being squeezed to generate an abnormal sound, so that the gap between the keyboard and the fan module 220 can be reduced, so that the overall thickness of the electronic device 200 can be reduced.

In addition, since the vane 256 and the air inlet 254 are disposed along the rotational direction of the vane 224b, that is, along the rotational direction of the fan blade 224, the vane 256 is located before the air inlet 254, so that the airflow can enter the housing 222 more smoothly. Among them, the brushed blade 224b and the stationary casing 222 are then pressurized while being staggered. The position of the incoming air is different from that of the conventional fan module 220 from the fan cover opening 222b, so the design of the blade 224b can be the same as that of the first embodiment, from one end connected to the rotating shaft 224a to the other end relatively far from the rotating shaft 224a. Keep the same area (as shown in Figure 6B). By increasing the air pushing area of the blade 224b, the overall performance of the fan module 220 is improved. [Third embodiment]

9A is a partial schematic view of a fan module according to a third embodiment of the present invention, and FIG. 9B is a cross-sectional view of the fan module 220 of the third embodiment. Referring to FIG. 7B, FIG. 9A and FIG. 9B, the present embodiment is different from the foregoing second embodiment in that the first surface 222a is provided with a windshield 252 and a stationary blade 256 sharing an air inlet 254 at the same time. That is, the windshield 252 and the vane 256 are respectively disposed on opposite sides of the same air inlet 254. Therefore, along the direction of rotation of the fan blades 244, the structure of the wind guiding structure is sequentially the vanes 256, the air inlet 254, and the windshield 252.

When the fan blade 224 (shown in FIG. 3C) rotates, the airflow 252 protruding from the first surface 222a can capture the airflow, prevent the airflow from escaping, and guide the captured airflow into the air inlet 254 to increase the airflow volume; The vane 256, which is recessed from the first surface 222a toward the inside of the casing 222, can exert a pressurizing effect on the airflow of the introduced air inlet 254, increasing the wind pressure of the incoming wind. Therefore, the fan module 220 having the windshield 252 and the vane 256 on the first surface 222a can have better performance than the first embodiment or the second embodiment.

In summary, the fan module of the present invention has at least the following advantages over the conventional fan module: 1. The fan module of the present invention provides a higher air inlet pressure or more in the same size. The amount of air intake is such that a better heat dissipation design is achieved. Second, the air leakage area can be sealed to reduce air leakage. Third, the wind flow enters the casing more smoothly into contact with the fan blades, reducing the probability of the air flow being squeezed and twisted, so that the fan blades can more easily push the wind flow and reduce the noise. Fourth, the blades of the fan blades are improved to have the same area from one side to the other side of the rotating shaft, so that the blades are enlarged, the amount of air that can be moved is more, and the performance of the fan module is improved. 5. The wind guiding structure provided on the first surface of the casing increases the rigidity of the casing, so that when the keyboard is pressed and tested, the deformation of the casing can be avoided and abnormal sounds can occur. 6. The gap between the keyboard and the fan casing can be reduced, thereby reducing the overall thickness of the electronic device.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100: fan module 110: fan cover opening 120: housing 120a: first surface 130: fan blade 140: fan cover 150: fan frame 152: stationary blade 200: electronic device 210: body 220: fan module 222: shell Body 222a: first surface 222b: fan cover opening 224: fan blade 224a: rotating shaft 224b: blade 226: fan cover 228: extension 230: display 252: windshield 252a: connecting portion 252b: parallel portion 254: air inlet

FIG. 1A is a schematic diagram of a conventional fan module. 1B is a cross-sectional view of the fan module taken along the line I-I of FIG. 1A. 2 is a schematic diagram of an electronic device. 3A is a perspective view of a fan module. Figure 3B is a top view of Figure 3A. Fig. 3C is a schematic view taken along line III-III of Fig. 3A. 4 is a partial schematic view of the fan module and the wind flow of FIG. 3A. Fig. 5 is a schematic view showing another embodiment of the air inlet and the windshield. Figure 6A is a schematic illustration of the shape of a blade in a conventional fan module. Fig. 6B is a schematic view showing the shape of a blade in the fan module of the first embodiment. FIG. 7A is a perspective view of a fan module according to a second embodiment of the present invention. Fig. 7B is a schematic view taken along line VII-VII of Fig. 7A. 8A and 8B are schematic views of a conventional fan module in which vanes are disposed on a fan frame and on a blade. 9A is a partial schematic view of a fan module according to a third embodiment of the present invention. Fig. 9B is a cross-sectional view showing the fan module of the third embodiment.

Claims (11)

A fan module includes: a housing having a first surface, wherein the first surface is provided with a plurality of recessed pressure openings; a fan blade is pivotally disposed in the housing and adapted to rotate in a rotation direction, Wherein the recessed pressurization opening is recessed from the first surface toward the interior of the housing along the direction of rotation, wherein the recessed pressurized opening comprises a vane and an air inlet, the vane a first surface facing the interior of the housing; a fan cover, the fan blade being pivoted in the housing through the fan cover; and a plurality of protruding windshield openings corresponding to the recessed pressurized opening Air inlet setting. The fan module of claim 1, wherein the recessed pressurizing opening is radially disposed at least partially along a circumferential direction of the fan cover. The fan module of claim 1, wherein the first surface has an air inlet zone and a sealing zone, the recessed pressure opening is disposed in the air inlet zone, and the sealing zone is sealed . The fan module of claim 1, wherein each of the protruding windshield openings has a windshield and shares the same air inlet with the recessed pressure opening, the windshield protruding from the first surface, And the windshield and the recessed pressure opening are located at two sides of the air inlet. The fan module of claim 4, wherein the windshield has a connecting portion and a parallel portion, the parallel portion is parallel to the first surface, and the connecting portion is connected to the parallel portion and the Between the first surfaces. The fan module of claim 1, wherein the air inlet is rectangular or curved along a radial direction of the fan cover. The fan module of claim 1, wherein the first surface has a fan cover opening and the fan cover is located in the fan cover opening. The fan module of claim 7, wherein the housing further has an extension covering and sealing the fan cover opening. The fan module of claim 1, wherein the fan blade includes a rotating shaft and a blade, the fan cover is fixed to the rotating shaft, and the blade is radially along a circumference of the rotating shaft Connected to the rotating shaft, and the blades are equal in area from one end connecting the rotating shaft to the other end remote from the rotating shaft. An electronic device comprising: a body; and a fan module according to any one of claims 1 to 9, which is installed in the body. The electronic device of claim 10, further comprising a display electrically connected to the body.