Cooling fin module and related computer system

Abstract

The utility model discloses a radiating fin module which is aligned with an air outlet of a centrifugal fan, and the centrifugal fan comprises a shell and a fan part arranged in the shell. The heat dissipation fin module comprises a plurality of fins which are provided with first lateral end parts and second lateral end parts and are arranged perpendicular to the air outlet, and each fin comprises a plate-shaped web plate and two side panels which vertically protrude from the first side of the plate surface of the web plate along the two side edges of the plate surface plane. The plurality of fins are stacked on each other with the side panel of one of the fins abutting against the second side of the plate surface of the web of the other of the fins. The first lateral ends of at least a portion of the plurality of fins each include a notch configuration recessed into the web away from the air outlet. The utility model also relates to a related computer system. By means of the cooling fin module, the airflow generated by the centrifugal fan can be evenly distributed on the cooling fin module as much as possible, and therefore noise increase and performance loss can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of radiating fin module and related computer system. BACKGROUND

[0002] Radiating fin module is widely used in computer system, to conduct the heat generated by computing system and internal heating device of system. As known to those skilled in the art, radiating fin module usually includes sheet-shaped radiating fin, heat pipe, vapor chamber and multiple sheet-shaped fins protruding from one side of radiating fin and arranged side by side. The side of the radiating fin opposite to the fins is configured to directly contact heat pipe, vapor chamber or any other heat dissipation component.

[0003] As shown in Figure 1 To enhance the heat dissipation performance of the system, centrifugal fan (also known as blower fan, with air outlet direction generally perpendicular to the rotation axis of the fan) is arranged at one lateral end (end along the direction parallel to the radiating fin) of the fin, and cold air is actively applied by centrifugal fan and air flow is discharged from the system along the gap between fins, so as to achieve refrigeration of computer system. Centrifugal fan is arranged in the housing to protect the fan and define the position of air outlet, so that cold air can accurately aim at the end of the gap between fins.

[0004] To improve system performance and cooling efficiency without increasing the space occupation (Z height (vertical direction (perpendicular to the surface of radiating plate)) etc.) of radiating assembly to system, the prior art is to increase the radiating area by increasing the fin density and expanding the fin size. However, this will increase the cost, occupy the internal space of system, increase the noise and deteriorate the sound quality, thereby seriously affecting the user experience. On the one hand, the air flow near the air outlet of centrifugal fan is not always straight, nor always well parallel to the surface of fin. Usually, air flow will leave the air outlet at various angles in various areas. On the other hand, the speed, intensity and distribution of air flow at the air outlet are also uneven. In some areas of air outlet, air flow is very strong, while in other areas, air flow is very weak. In addition, for large size centrifugal fan, support column is usually added in the housing to maintain the integrity of air outlet and prevent the deformation of housing, which also affects the speed, intensity and distribution of air flow. SUMMARY

[0005] According to one aspect of the present application, a heat dissipation fin module is disclosed, which is aligned with an air outlet of a centrifugal fan, the centrifugal fan comprising a housing and a fan portion arranged therein to generate airflow in a centrifugal direction perpendicular to a rotation axis of the centrifugal fan, wherein the heat dissipation fin module comprises a plurality of fins having first and second lateral end portions and being arranged perpendicular to the air outlet, each of the plurality of fins comprising a plate-shaped web and two side panels vertically protruding from two sides of a plate face of the web, wherein the protruding dimensions of the two side panels of each of the plurality of fins are identical and are spaced apart in a direction parallel to the rotation axis, wherein the plurality of fins are arranged in a stacked manner with the side panel of one of the plurality of fins abutting a second side of the plate face of the web of another of the plurality of fins to form a tubular airflow passage between two consecutive fins, wherein the air outlet in the housing is aligned at the first lateral end portion of the plurality of fins to direct the airflow out of the second lateral end portion via the tubular airflow passage between the plurality of fins, and wherein the first lateral end portion of at least a portion of the plurality of fins each comprises a notch configuration recessed from the web away from the air outlet.

[0006] Optionally, the notch configuration is in a curved shape, a polygonal shape, or a combination of straight lines and curves.

[0007] Optionally, the notch configuration is located at a middle position of the first lateral end portion, or a middle position of the airflow generated by the centrifugal fan in the direction parallel to the rotation axis.

[0008] Optionally, the protruding dimensions of the side panels of the fins corresponding to a first length in the heat dissipation fin module in a stacking direction of the fins are different from those of the fins at other positions in the heat dissipation fin module, the first length being a portion of a total length of the heat dissipation fin module in the stacking direction of the fins.

[0009] Optionally, the first length represents a first distance of the heat dissipation fin module from an upstream end portion of the air outlet opposite to the rotation direction of the fan portion, and the protruding dimensions of the side panels of the fins corresponding to the first length are smaller than those of the side panels of the remaining fins.

[0010] Optionally, the protruding dimensions of the side panels of the fins corresponding to a second length in the remaining fins are greater than those of the fins corresponding to the first length but smaller than those of the side panels of the fins at positions other than the second length, wherein the second length is another length portion of the total length of the heat dissipation fin module in the stacking direction of the fins.

[0011] Optionally, at least a portion of the fins correspond to the fins corresponding to both the first length and the second length in the heat dissipation fin module, and wherein the notch configuration of the fins corresponding to the second length is in a different shape from the notch configuration of the fins corresponding to the first length.

[0012] Optionally, the web of each of the plurality of fins includes a rib projecting from the first side of the web in the same direction of projection as the side panel, the rib configured in a groove shape open at the second side of the web.

[0013] Optionally, the plurality of fins includes at least one chamfer at the first lateral end portion, the chamfer configured such that the face of the web at the first lateral end portion is tapered in a direction closer to the air outlet, wherein a portion of the airflow is configured to be directed to flow from the air outlet to at least one of the upper side wall or the lower side wall of the heat dissipation fin module formed by the two side panels respectively via the chamfer.

[0014] According to an aspect of the present application, a computer system is disclosed, comprising: a heat dissipation system comprising a centrifugal fan and a heat dissipation fin module aligned with an air outlet of the centrifugal fan, wherein the heat dissipation fin module is as described above; a computer system housing comprising an upper housing cover covering the heat dissipation system, a lower housing cover, and side housing covers connecting the upper housing cover and the lower housing cover; and a gasket supported between the lower housing cover and the centrifugal fan to support the centrifugal fan spaced apart from the lower housing cover; wherein the side housing covers comprise through holes and the heat dissipation fin module is fixedly held to the through holes at the second lateral end portion of the fins and is in communication with the outside of the computer system housing; wherein the size of the through holes is greater than the size of the heat dissipation fin module at the second lateral end portion so that at least one of the upper side wall or the lower side wall of the heat dissipation fin module formed by the two side panels respectively is in communication with the outside of the computer system housing via the through holes; wherein the plurality of fins of the heat dissipation fin module includes at least one chamfer at the first lateral end portion, the chamfer configured such that the face of the web at the first lateral end portion is tapered in a direction closer to the air outlet, wherein a portion of the airflow is configured to be directed to flow from the air outlet to at least one of the upper side wall or the lower side wall of the heat dissipation fin module formed by the two side panels respectively via the chamfer and further to the through holes.

[0015] With the heat dissipation fin module and the computer system of the present application, the airflow generated by the centrifugal fan can be as evenly distributed as possible on the heat dissipation fin module, thereby significantly reducing the noise increase and performance loss caused by the angle inconsistency, speed inconsistency, intensity inconsistency and distribution inconsistency of the airflow. BRIEF DESCRIPTION OF DRAWINGS

[0016] Further features and advantages of the present application will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the application.

[0017] Figure 1 A schematic view of a heat dissipation fin module according to the present application aligned with an air outlet of a centrifugal fan known in the prior art is shown;

[0018] Figures 2a-2c A configuration diagram of a heat dissipation fin module according to a first embodiment of the present application is shown;

[0019] Figure 3 A configuration diagram of a heat dissipation fin module according to a second embodiment of the present application is shown;

[0020] Figure 4 A configuration diagram of a heat dissipation fin module according to a third embodiment of the present application is shown;

[0021] Figure 5 A configuration diagram of a heat dissipation fin module according to a fourth embodiment of the present application is shown;

[0022] Figure 6 A configuration diagram of a heat dissipation fin module according to the fourth embodiment of the present application aligned with an outlet of a centrifugal fan is shown, wherein a flow direction of a portion of airflow is shown;

[0023] Figure 7 An assembly diagram of a computer system combined with the heat dissipation fin module according to the present application is shown; and

[0024] Figure 8 An assembly diagram of a computer system combined with another heat dissipation fin module according to the present application is shown. DETAILED DESCRIPTION

[0025] It should be understood that, in all the drawings of the present application, the same reference numerals represent the same or similar parts.

[0026] Figure 1A schematic view of the heat sink fin module 1 according to the present application is shown aligned with the air outlet 310 of a centrifugal fan 30 known in the art. It is to be understood that the construction of a centrifugal fan 30, especially for a centrifugal fan for a computing system, is well known to the person skilled in the art and therefore only briefly defined here. The centrifugal fan 30 comprises a housing and a fan portion 38 arranged in the housing to generate an airflow in a centrifugal direction perpendicular to the rotation axis of the centrifugal fan, i.e. the centrifugal fan 30 directs the airflow in a direction perpendicular to the rotation axis on which the fan portion is rotated. As an example, the housing can optionally comprise an upper housing plate 32 and a lower housing plate 34 and a side wall 36 connecting the upper and lower housing plates to protect the fan portion 38 and to direct the flow of the airflow generated by the fan portion. As known to the person skilled in the art, in the housing, especially in the side wall 36, an air outlet 310 is arranged for directing the centrifugal flow of the airflow generated by the fan portion to the outside of the housing. The side of the air outlet 310 opposite to the direction of rotation of the fan portion or to the flow direction of the airflow is called upstream and the side in the same direction of rotation of the fan portion is called downstream. For example, if the fan portion is constructed to rotate in a counter-clockwise direction, the airflow will thus flow in a centrifugal direction in a counter-clockwise direction, in which case the side of the air outlet in the direction of rotation of the fan portion opposite to the direction of rotation is the upstream side (i.e. at the clockwise position on the other side in the counter-clockwise direction) and the other side is the downstream side. It is to be noted that in Figure 1 embodiments, the upstream and downstream can also denote the relative position of the side wall, independent of the upper and lower housing. Furthermore, any other construction or component known to the person skilled in the art in relation to a centrifugal fan, which is not described in detail here, is obviously also included in the scope of the centrifugal fan according to the present application.

[0027] It is to be noted that in the following embodiments of the present application, the centrifugal fan 30 always denotes a centrifugal fan 30 described herein or not described herein but known to the person skilled in the art, which is not described in additional detail here.

[0028] In the following of the present application, the detailed construction of the heat sink fin module 1 will be described in detail.

[0029] Figures 2a-2c A schematic view of the construction of the heat sink fin module 1 according to the first embodiment of the present application is shown. In Figures 2a-2cIn the embodiment of the present invention, the heat dissipation fin module 1 includes a plurality of fins 12 having first and second lateral ends E1 and E2. These fins 12 are arranged perpendicular to the air outlet 310. It should be understood that "perpendicular to the air outlet" refers to a surface formed by the opening perpendicular to the air outlet 310. In addition, it should be understood that the first and second lateral ends E1 and E2 represent the two end positions of the fins 12 in a direction perpendicular to the stacking direction of the fins 12 (which will be described later) and parallel to the side panels of the fins 12 (as described later). In other words, the first and second lateral ends E1 and E2 represent the corresponding two end positions of the web of the fin 12 (as described later) in a direction parallel to the two side panels.

[0030] like Figures 2a-2c As shown, each of the plurality of fins 12 includes a generally plate-shaped web 120 and two side panels 122 protruding generally perpendicularly from a first side or a first surface in a plate surface of the web at two sides of the plate surface plane. It should be understood that in the first and subsequent embodiments of the present application, the plate surface plane refers to the main plane of the plate-shaped shape of the web 120. Figures 2a-2c In the embodiment, the web 120 includes two parallel side edges extending parallel to each other. The two side edges are the side boundaries of the panel plane and are parallel to each other. Therefore, the two side panels 122 are also parallel to each other. Of course, optionally, the two side edges are the side edges of the panel plane but are not parallel. Therefore, the two side panels 122 are also optionally not parallel.

[0031] Further, if Figures 2a-2c As shown, the protruding dimensions of the two side panels 122 of each of the plurality of fins 12 are the same. In other words, the protruding dimensions of the two side panels 122 are the same and thus can abut against the second side or second surface of the web of another fin opposite to the first side.

[0032] Obviously, if Figures 2a-2c Shown and combined Figure 1 The two side panels 122 correspond to the upper and lower sides of the air outlet 210 in a direction parallel to the rotation axis (ie, the height of the air outlet), that is, they are spaced apart in a direction parallel to the rotation axis.

[0033] In the above, the arrangement of the heat dissipation fin module 1 or each fin 12 therein relative to the air outlet 310 is actually defined: the two side panels 122 respectively correspond to the upper and lower sides of the air outlet and the fins are arranged perpendicular to the air outlet. In addition, it needs to be understood that, preferably, in various embodiments of the present application, the distance between the two side panels 122 at the first lateral end E1 or the width of the web 120 at the first lateral end E1 is smaller than the size of the air outlet 310 in the direction parallel to the rotation axis, so that the first lateral end E1 of the fin 12 can be completely aligned in the air outlet 310.

[0034] Further, as Figures 2a-2c shown and as previously described, for each fin of the plurality of fins 12, its side panel 122 with its edge away from the web 120 abuts or abuts to the second side opposite to the first side of the panel of the web 120 of another fin and / or with its second side of the panel of the web 120 abuts or abuts to the edge away from the web 120 of the side panel 122 of another fin is arranged stacked with each other. In other words, these fins 12 are arranged abutting or abutting to each other, especially aligned, optionally fixed, in a way that the side panel of one fin faces the second side of the web of another fin and / or the second side of the web of one fin abuts to the side panel of another fin, to form the heat dissipation fin module 1 as described in the embodiments of the present application.

[0035] As Figures 2a-2c shown, it is clear that a tubular air flow channel is formed between two consecutive fins 12, that is, one fin and the second side of the web of another fin form a tubular air flow channel, the cross section of which is obviously preferably rectangular. In addition, the tubular air flow channel obviously extends between the first and second lateral ends of the fin.

[0036] As Figures 2a-2c shown, the air outlet 310 in the housing is aligned at the first lateral end E1 of the plurality of fins 12 to guide the air flow out of the second lateral end E2 via the tubular air flow channels between the plurality of fins 12. It needs to be noted that the ordinal words such as "first", "second", etc. at this and other places are only for the purpose of differentiation and not for sequential limitation.

[0037] In the first embodiment of the present application, as Figures 2a-2c shown, at least a portion of the plurality of fins 12, for example, five, ten, twenty, … ninety, ninety-five percent of the fins or even all of the fins 12, each include a notch configuration 126 at the first lateral end E1. As Figures 2a-2cAs shown, the recessed structures 126 are configured to recess away from the air outlet recess 310 into the web, so as to reduce the pressure (or impact intensity) of the airflow exiting the air outlet 310 on the fins 12, thus reducing the vibration and weakening the noise generation. The recessed structures 126 can be regarded as recesses formed by removing at least a portion of the web at the first lateral end E1, which also helps to reduce the overall heat dissipation fin module 1 mass.

[0038] Optionally and conceivably, as Figures 2a-2c shown, the recessed structures 126 can be in any conceivable shape, such as a curved shape, a polygonal shape, or a combination of straight and curved shapes. More specifically, in Figures 2a-2c , the recessed structures 126 are respectively shown in a circular arc shape, a triangular shape, and a trapezoidal shape. In these examples, the recessed structures are optionally recessed from two side edges of the plate surface of the web 120 where the two side panels 122 are located, to a middle position of the web in a direction parallel to the rotation axis, that is, the opening size of the recessed structures 126 corresponds to the entire width of the web in a direction parallel to the rotation axis, especially as Figures 2b-2c shown, it is obvious that this embodiment is also applicable to Figure 2a .

[0039] Optionally and conceivably, as Figures 2a-2c shown, the recessed structures 126 are all located at a middle position of the first lateral end E1, that is, a middle position of the web in a direction parallel to the rotation axis, or a middle position of the airflow in a direction parallel to the rotation axis away from the centrifugal fan.

[0040] Optionally and conceivably, the heat dissipation fin module 1 can include fins with a single recessed structure shape, or a combination of corresponding different fins with multiple recessed shapes, obviously, these embodiments are also included in the scope of the present application. With the aid of the recessed structures 126, it helps to reduce noise and to some extent maintain the heat dissipation performance of the heat dissipation fin module as a whole. Especially for the airflow exiting the air outlet which is not perpendicular to the fins in the heat dissipation fin module, this recessed structure obviously helps to suppress noise.

[0041] Figure 3 A schematic diagram of the configuration of a heat dissipation fin module 1 according to a second embodiment of the present application is shown, the main difference between the second embodiment and the first embodiment is the spacing between the fins 12. Since the spacing is directly related to the protrusion size of the two side panels 122, this difference can also be represented as a difference in the protrusion size of the two side panels of the fins.

[0042] In particular, as Figure 3As shown, the protruding dimension of the side panel of the fins corresponding to the first length in the fin stack direction of the heat dissipation fin module 1, i.e. the fins 12 in the first length in the heat dissipation fin module, is different from the protruding dimension of the fins at other positions in the heat dissipation fin module, and thus the spacing between the fins in the first length is different from the spacing between the fins at other positions. Obviously, the first length here is a part of the total length of the heat dissipation fin module 1 in the fin stack direction. That is, in the second embodiment, there are different parts in the heat dissipation fin module where the spacing between the fins is different. As will be appreciated by those skilled in the art, the smaller the spacing between the fins, the more fins per unit length, and thus the greater the total heat dissipation area of the fins, and thus the greater the heat dissipation capacity; conversely, the weaker the heat dissipation capacity. As mentioned above, considering the non-uniformity of the airflow out of the air outlet in terms of angle, speed, intensity and distribution, it is obvious that the airflow at positions where the speed, intensity and / or distribution is greater (more) or the angle is more parallel to the fins can use more fins, i.e. smaller spacing, for heat dissipation; while the airflow at positions where the speed, intensity and / or distribution is smaller (less) or the angle is less parallel to the fins can use fewer fins, i.e. sparser design, to ensure heat dissipation performance. Therefore, the spacing between the fins at different positions can be increased or decreased in consideration of the speed, intensity and / or distribution of the airflow out of the air outlet and the angle of the airflow to fully exert the cooling effect of the cold air flow.

[0043] Based on the foregoing and as Figure 3 As shown, for the conventional centrifugal fan 30 of the prior art, the speed, intensity and / or distribution of the airflow near the upstream end of the air outlet 310 is relatively greater (more), and thus, optionally, the first length can represent the length of the heat dissipation fin module along the first distance from the upstream end of the air outlet opposite the rotation direction of the fan portion, i.e. the first length represents a selected length of the heat dissipation fin module near the upstream end of the air outlet, so that the protruding dimension of the side panel of the fins corresponding to the first length in the heat dissipation fin module 1 is smaller than the protruding dimension of the side panel of the fins at other positions, i.e. the spacing between the fins is smaller near the upstream end of the air outlet, so that the airflow with relatively greater speed, intensity and / or distribution at this position is used to cool more of the heat dissipation fin module. In other words, the protruding dimension of the side panel of the fins at other positions is greater than the protruding dimension of the side panel of the fins corresponding to the first length in the heat dissipation fin module.

[0044] As an example, the protruding dimension of the side panel of the fins corresponding to the first length or the spacing between the corresponding fins is selected to be 0.9 mm. It should be noted that this size selection is only exemplary and not limiting, and those skilled in the art can select any appropriate size as needed without departing from the scope of the present application as long as the heat dissipation performance can be ensured.

[0045] In addition, considering the fact that Figures 2a-3 corresponding to a relatively large air flow in terms of speed, intensity and / or distribution, and thus the fins at the first length are subjected to a relatively large air impact, and thus fins with a notched configuration can be considered to be used to reduce the impact of the air flow; while fins outside the first length are subjected to a relatively small (less) air flow in terms of speed, intensity and / or distribution, and thus fins at these positions can adopt conventional fins without a notched configuration. Therefore, in the embodiments of the present application, it is considered that the fins corresponding to the first length in the heat dissipation fin module are all provided with fins with a notched configuration, and optionally, the fins corresponding to the first length in the heat dissipation fin module correspond to at least a portion of the fins as described above.

[0046] In addition, although Figure 3 corresponding to a relatively large air flow in terms of speed, intensity and / or distribution, and thus the fins at the first length are subjected to a relatively large air impact, and thus fins with a notched configuration can be considered to be used to reduce the impact of the air flow; while fins outside the first length are subjected to a relatively small (less) air flow in terms of speed, intensity and / or distribution, and thus fins at these positions can adopt conventional fins without a notched configuration. Therefore, in the embodiments of the present application, it is considered that the fins corresponding to the first length in the heat dissipation fin module are all provided with fins with a notched configuration, and optionally, the fins corresponding to the first length in the heat dissipation fin module correspond to at least a portion of the fins as described above.

[0047] Figure 4 A schematic diagram of the heat dissipation fin module 1 according to the third embodiment of the present application is shown, Figure 4The third embodiment differs from the first embodiment in the configuration of the web 120, in particular of the body of the web. As shown in Figure 4 In accordance with the embodiment described above, the web 120 of each fin 12 comprises ribs 124 protruding from the first side of the web in the same direction as the side panels and configured as grooves open at the second side of the web. That is, the ribs 124 are configured as grooves open at the second side of the web. Figure 4 In the third embodiment, the web 120 comprises groove portions recessed in the same direction as the side panels, thereby enabling to enhance the overall strength of the fin. In fact, the recessed shape of the groove configuration with respect to the ribs 124 can be arbitrarily selected without departing from the scope of the present application.

[0048] Figure 5 A configuration schematic diagram of the heat dissipation fin module 1 according to the fourth embodiment of the present application is shown and Figure 6 A configuration schematic diagram of the heat dissipation fin module 1 according to the fourth embodiment of the present application aligned with the air outlet 310 of the centrifugal fan 30 is shown, Figure 6 The flow direction of a portion of the air flow is also shown. Figure 5 And 6 The third embodiment differs from the first embodiment in the shape of the fin at the first lateral end portion E1. Specifically, as shown in Figure 5 And 6 The plurality of fins comprises at least one chamfer portion 128 at the first lateral end portion. The at least one chamfer portion 128 is respectively located at both sides of the first lateral end portion E1 of the fin in the direction parallel to the rotation axis, such that the chamfer portion 128 is configured to cause the plate surface of the web 120 to gradually narrow in the direction close to the air outlet at the first lateral end portion. By means of the chamfer portion 128, an additional air flow passage can be formed between the air outlet 310 and the chamfer portion 128. Figure 6 The flow direction of a portion of the air flow is also shown. As shown in Figure 6 By means of the chamfer portion, the air flow leaving the air outlet 310 can not only be guided into the tubular air flow passage of the heat dissipation fin module 1, but also a portion of the air flow is guided to flow outside the heat dissipation fin module 1 from the air outlet 310 via the chamfer portion 128, in particular to the structure such as the heat pipe 20 contacted by the heat dissipation fin module 1, thereby realizing the multiple cooling function of the centrifugal fan 30. In Figure 6 And Figure 7 In the third embodiment, the web 120 comprises groove portions recessed in the same direction as the side panels, thereby enabling to enhance the overall strength of the fin. In fact, the recessed shape of the groove configuration with respect to the ribs 124 can be arbitrarily selected without departing from the scope of the present application. Figure 6 Although two chamfer portions 128 are shown in Figure 7A chamfered portion is shown in the middle, but one skilled in the art should appreciate that there can be two chamfered portions without departing from the scope of the present application.

[0049] Of course, it is also conceivable that the plurality of fins also comprises at least one chamfered portion (not shown) at the second lateral end E2. The at least one chamfered portion is each located at a position on both sides of the second lateral end E2 of the fin in a direction parallel to the rotation axis, such that the chamfered portion is configured such that the plate face of the web narrows gradually in a direction away from the air outlet at the second lateral end.

[0050] Further, Figure 7 An assembly schematic of a computer system combined with the heat dissipation fin module 1 according to the fourth embodiment of the present application is shown in Figure 8 An assembly schematic of a computer system combined with another heat dissipation fin module according to the present application is shown in Figure 7 and Figure 8 The difference lies in the number and position of the chamfered portions, in Figure 7 In the former, only one chamfered portion is provided at the lower side (one side in a direction parallel to the rotation axis) of the first lateral end of the heat dissipation fin module, while in Figure 8 In the latter, chamfered portions are provided at both sides in a direction parallel to the rotation axis of the first and second lateral ends of the heat dissipation fin module.

[0051] As shown in Figure 7 and 8 The computer system comprises a heat dissipation system, which comprises a centrifugal fan 30 and a heat dissipation fin module 1 aligned with the air outlet 310 of the centrifugal fan, wherein the heat dissipation fin module 1 is as described before according to the present application, in particular the heat dissipation fin module with the chamfered portion 128 in the fourth embodiment, which will be further elaborated later.

[0052] As shown in Figure 7 The computer system further comprises a computer system housing, which comprises an upper housing cover 42, a lower housing cover 44 covering the heat dissipation system, and a side housing cover connecting the upper housing cover and the lower housing cover, wherein the side housing cover comprises a through hole 46 and the heat dissipation fin module 1 is fixed at the second lateral end E2 of the fin to communicate with the through hole 46 so that the tubular airflow passage therein communicates to the outside of the computer system housing. In Figure 7 the embodiment shown, the size of the through hole 46 is configured to be larger than the size of the heat dissipation fin module 1 at the second lateral end E2 so that at least one of the upper side wall or the lower side wall formed by the two side panels 122 of each fin in the heat dissipation fin module 1 can communicate to the outside of the computer system housing via the through hole.

[0053] As shown in Figure 7As shown, the computer system further comprises a gasket 48 supported between the lower shell cover 44 and the centrifugal fan 30 to support the centrifugal fan 30 spaced apart from the lower shell cover 44 to ensure the suction effect of the centrifugal fan.

[0054] As Figure 7 shown, the plurality of fins 12 of the heat dissipation fin module 1 comprises at least one chamfer portion 128 at the first lateral end portion E1, which can be located at at least one of the two side positions of the first lateral end portion E1 of the fin in the direction parallel to the rotation axis, such that the chamfer portion 128 is configured to make the plate surface of the web 120 at the first lateral end portion E1 gradually narrow in the direction close to the air outlet 310. By means of the chamfer portion 128, an additional air flow passage can be formed between the air outlet 310 and the chamfer portion 128, especially in the case that the width of the web 120 at the first lateral end portion E1 in the direction parallel to the rotation axis is less than the size of the air outlet 310. By means of the chamfer portion, the cold air flow out of the air outlet 310 can naturally and smoothly flow out along the chamfer portion. Therefore, part of the cold air flow out of the air outlet is configured to be guided to flow from the air outlet to at least one of the upper side wall or the lower side wall in the heat dissipation fin module 1 via the chamfer portion to additionally cool the same. Since the size of the through hole 46 is designed as described above, the air flow for cooling at least one of the upper side wall or the lower side wall is further guided to the through hole to exit the computer shell. Although Figure 6 two chamfer portions are shown in the middle, it should be appreciated by those skilled in the art that there can be two chamfer portions without departing from the scope of the present application. In the case that there are two chamfer portions as Figure 6 shown, it is obvious that the through hole is arranged to communicate with Figures 5-6 the flow path shown without departing from the scope of the present application.

[0055] Of course, as similar to the embodiments described with respect to ​ , it can also be envisaged that the plurality of fins also comprises at least one chamfer portion (not shown) at the second lateral end portion E2. The at least one chamfer portion is each located at the two side positions of the second lateral end portion E2 of the fin in the direction parallel to the rotation axis, such that the chamfer portion is configured to make the plate surface of the web at the second lateral end portion gradually narrow in the direction away from the air outlet. By means of the chamfer portion at the second lateral end portion, the heat dissipation fin assembly forms a more smooth air flow flow path with respect to the through hole at the second lateral end portion, which helps the air flow to flow out of the through hole of the computer system shell. Preferably, at least one of the two sides of the plurality of fins in the direction parallel to the rotation axis comprises a chamfer portion (not shown) at the first and second lateral end portions to be able to optimize the air flow flow path.

[0056] Although detailed structures of the present application are described in detail above, these descriptions are merely exemplary and various modifications can be made without departing from the scope of the present application.

Claims

1. A heat dissipation fin module aligned with an air outlet of a centrifugal fan, the centrifugal fan comprising a housing and a fan portion disposed therein to generate an airflow in a centrifugal direction perpendicular to an axis of rotation of the centrifugal fan, the heat dissipation fin module comprising a plurality of fins having first and second lateral ends and disposed perpendicular to the air outlet, each of the plurality of fins comprising a plate-like web and two side panels protruding perpendicularly from a first side among plate faces of the web along two side edges of a plate face plane, wherein the protruding dimensions of the two side panels of each of the plurality of fins are identical and spaced apart in a direction parallel to the axis of rotation, wherein the plurality of fins are disposed stacked with a side panel of one abutting against a second side among the plate faces of the web of another to form a tubular airflow passage between two consecutive fins, wherein the air outlet in the housing is aligned at the first lateral end of the plurality of fins to direct the airflow out of the second lateral end via the tubular airflow passages among the plurality of fins, wherein the first lateral end of at least a portion of the plurality of fins each comprises a notched configuration recessed away from the air outlet into the web. the notched configuration is in a curvilinear, polygonal or straight curvilinear combination shape. the notched configuration is located at a middle position of the first lateral end, or a middle position of the airflow generated by the centrifugal fan in the direction parallel to the axis of rotation. the protruding dimensions of the side panels of the fins corresponding to a first length in the heat dissipation fin module in a stacking direction of the fins are different from those of the fins at other positions in the heat dissipation fin module, the first length being a length portion of a total length of the heat dissipation fin module in the stacking direction of the fins. the first length represents a first distance in the heat dissipation fin module from the air outlet to an upstream end of the air outlet opposite to a rotation direction of the fan portion, and the protruding dimensions of the side panels of the fins corresponding to the first length are smaller than those of the side panels of the remaining fins. the protruding dimensions of the side panels of the fins corresponding to a second length in the remaining fins are greater than those of the fins corresponding to the first length but smaller than those of the side panels of the fins at positions other than the first length and the second length, the second length being another length portion of the total length of the heat dissipation fin module in the stacking direction of the fins other than the first length. the at least a portion of the fins correspond to the fins in the heat dissipation fin module corresponding to both the first length and the second length, and wherein the notched configuration of the fins corresponding to the second length is in a different shape from that of the notched configuration of the fins corresponding to the first length. the web of each of the plurality of fins comprises a rib portion protruding from the first side of the web in a same protruding direction as the side panels, the rib portion being configured in a groove shape open at the second side of the web. ​ ​ ​ ​ ​ 2. The heat sink module of claim 1, wherein, ​ 3. The heat sink module of claim 1, wherein, ​ 4. The heat sink module of any one of claims 1-3, wherein, ​ 5. The heat sink module of claim 4, wherein, ​ 6. The heat sink module of claim 5, wherein, ​ 7. The heat sink module of claim 6, wherein, ​ 8. The heat sink module of any one of claims 1-3, wherein, ​ 9. The heat sink module of any one of claims 1-3, wherein, The plurality of fins comprises at least one chamfer portion at the first lateral end portion, the chamfer portion being configured such that the plate surface of the web narrows gradually in a direction closer to the air outlet at the first lateral end portion, wherein a portion of the airflow is configured to be guided to flow from the air outlet to at least one of an upper side wall or a lower side wall of the heat dissipation fin module correspondingly formed by two side panels via the chamfer portion.

10. A computer system, characterized by It comprises: a heat dissipation system comprising a centrifugal fan and a heat dissipation fin module aligned with an air outlet of the centrifugal fan, wherein the heat dissipation fin module is according to any one of claims 1-8; a computer system housing comprising an upper housing cover, a lower housing cover covering the heat dissipation system, and a side housing cover connecting the upper housing cover and the lower housing cover; and a gasket supported between the lower housing cover and the centrifugal fan to support the centrifugal fan spaced apart from the lower housing cover; wherein the side housing cover comprises a through hole and the heat dissipation fin module is fixedly held to the through hole at the second lateral end portion of the fins and communicates to the outside of the computer system housing; wherein the size of the through hole is greater than the size of the heat dissipation fin module at the second lateral end portion so that at least one of the upper side wall or the lower side wall of the heat dissipation fin module correspondingly formed by two side panels communicates to the outside of the computer system housing via the through hole; wherein the plurality of fins of the heat dissipation fin module comprises at least one chamfer portion at the first lateral end portion, the chamfer portion being configured such that the plate surface of the web narrows gradually in a direction closer to the air outlet at the first lateral end portion, wherein a portion of the airflow is configured to be guided to flow from the air outlet to at least one of the upper side wall or the lower side wall of the heat dissipation fin module correspondingly formed by two side panels via the chamfer portion and further guided to the through hole.

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