Heat dissipation module and server

Abstract

A heat dissipation module includes pipes and a first fan. The pipes include an acceleration zone, a high-speed zone, a guide zone, and a current-boosting zone. The acceleration zone includes a first end face, a second end face, and a first inclined surface, with one side of the first inclined surface adjacent to the first end face and the other side adjacent to the second end face. The distance from the first inclined surface to the central axis of the pipe decreases from the side adjacent to the first end face to the side adjacent to the second end face. The high-speed zone is connected to the second end face. The guide zone includes a third end face, a fourth end face, and a second inclined surface. The third end face is connected to the high-speed zone, with one side of the second inclined surface adjacent to the third end face and the other side adjacent to the fourth end face. The distance from the second inclined surface to the central axis of the pipe increases from the side adjacent to the third end face to the side adjacent to the fourth end face. The current-boosting zone is connected to the fourth end face. Additionally, a server is also mentioned.

Description

Technical Field

[0001] This invention relates to a module and a server, and more particularly to a heat dissipation module and a server including the heat dissipation module. Prior Technology

[0002] Modern servers typically include a chassis and a cooling module (e.g., a fan). The fan is located inside the chassis to cool the heat sources within it. However, if the chassis only has one air inlet and one air outlet, and only one fan drives the airflow, it is difficult to increase the airflow at the exhaust outlet, resulting in poor server cooling efficiency. Summary of the Invention

[0003] This invention provides a heat dissipation module and a server, which can improve heat dissipation efficiency.

[0004] The heat dissipation module of the present invention includes a conduit and a first fan. The conduit includes an acceleration zone, a high-speed zone, a guide zone, and a current-boosting zone. The acceleration zone includes a first end face, a second end face, and a first inclined surface. One side of the first inclined surface is adjacent to the first end face, and the other side of the first inclined surface is adjacent to the second end face. The distance from the first inclined surface to the central axis of the conduit decreases from the side adjacent to the first end face to the side adjacent to the second end face. The high-speed zone is connected to the second end face. The guide zone includes a third end face, a fourth end face, and a second inclined surface. The third end face is connected to the high-speed zone. One side of the second inclined surface is adjacent to the third end face, and the other side of the second inclined surface is adjacent to the fourth end face. The distance from the second inclined surface to the central axis of the conduit increases from the side adjacent to the third end face to the side adjacent to the fourth end face. The current-boosting zone is connected to the fourth end face. The first fan is disposed on the first end face, and the first end face is located between the second end face and the first fan.

[0005] The server of the present invention includes a chassis and the aforementioned heat dissipation module. The heat dissipation module is disposed inside the chassis.

[0006] Based on the above, the first inclined surface of the heat dissipation module of the present invention faces the second inclined surface. Two fans are disposed on both sides of the pipe to drive the airflow within the pipe. Through the cooperation between the various zones of the pipe, the gas flow velocity in the boosting zone is greater than the gas flow velocity at the first end face of the acceleration zone. In this way, the heat dissipation module can increase the gas flow velocity, enabling the gas to quickly exchange heat with the heat source and leave the heat dissipation module, thereby improving the heat dissipation efficiency of the heat dissipation module and the server. Simple Explanation of the Diagram

[0007] Figure 1 is a schematic diagram of a server according to an embodiment of the present invention. Figure 2 is a cross-sectional view of the heat dissipation module in Figure 1. Figure 3 is a schematic diagram of a heat dissipation module according to another embodiment of the present invention. Figure 4 is a cross-sectional view of the heat dissipation module in Figure 3. Figure 5 is a cross-sectional view of a heat dissipation module according to another embodiment of the present invention. Figure 6 is a simplified block diagram of a server according to another embodiment of the present invention. Implementation

[0008] Figure 1 is a schematic diagram of a server according to an embodiment of the present invention. Figure 2 is a cross-sectional view of the heat dissipation module of Figure 1. Referring to both Figures 1 and 2, the server 10 includes a chassis 11 and a heat dissipation module 20. The heat dissipation module 20 is disposed within the chassis 11. The heat dissipation module 20 includes a housing 110, a heat source 120, a conduit 210, and a first fan 220. The heat source 120, the conduit 210, and the first fan 220 are disposed within the housing 110. The heat source 120 corresponds to the conduit 210 to dissipate heat through the conduit 210. The conduit 210 includes an acceleration zone 211, a high-speed zone 212, an inlet zone 213, and a flow boosting zone 214 connected in sequence. In this embodiment, each region of the conduit may be integrally formed; while in other embodiments, the conduit may be formed by interlocking sub-conduits of each zone.

[0009] Acceleration zone 211 includes a first end face E1, a second end face E2, and a first inclined surface S1. One side of the first inclined surface S1 is adjacent to the first end face E1, and the other side of the first inclined surface S1 is adjacent to the second end face E2. In this embodiment, the first inclined surface S1 is directly connected between the first end face E1 and the second end face E2; while in other embodiments, the first inclined surface S1 may be indirectly connected (e.g., with a gap or connected through other components) between the first end face E1 and the second end face E2. The first end face E1 is connected to the first fan 220, and the second end face E2 is connected to the high-speed zone 212. Inlet zone 213 includes a third end face E3, a fourth end face E4, and a second inclined surface S2. The third end face E3 is connected to the high-speed zone 212, and the fourth end face E4 is connected to the booster zone 214. One side of the second inclined surface S2 is adjacent to the third end face E3, and the other side of the second inclined surface S2 is adjacent to the fourth end face E4. In this embodiment, the second inclined surface S2 is directly connected between the third end face E3 and the fourth end face E4; while in other embodiments, the second inclined surface S2 may be indirectly connected (e.g., with a gap or connected through other elements) between the third end face E3 and the fourth end face E4. The distance from the first inclined surface S1 to the central axis L5 of the pipeline 210 decreases from the side adjacent to the first end face E1 to the side adjacent to the second end face E2, and the distance from the second inclined surface S2 to the central axis L5 of the pipeline increases from the side adjacent to the third end face E3 to the side adjacent to the fourth end face E4. The first inclined surface S1 and the second inclined surface S2 face the high-speed zone 212.

[0010] A first fan 220 is disposed on the first end face E1 of the pipe 210, which is located between the second end face E2 and the first fan 220. The first fan 220 is used to blow an airflow C1 into the acceleration zone 211 of the pipe 210. In this embodiment, by means of the cooperation between the various zones of the pipe 210, the gas velocity in the boosting zone 214 can be greater than the gas velocity in the first end face E1. The heat source 120 may be located in the boosting zone 214, but is not limited thereto. In this way, the heat source 120 can exchange heat with the high-speed airflow with low thermal energy to improve the heat dissipation efficiency of the server 10.

[0011] The heat source 120 may be one or a combination of a central processing unit, a graphics processing unit, a neural network processor, a random access memory, a hard disk, a solid-state drive, or a power supply, but the type and number of heat sources 120 are not limited thereto. In this embodiment, the number of heat dissipation modules 20 is one, but it is not limited thereto.

[0012] As shown in Figure 2, the housing 110 includes a first surface 111 and a second surface 112 opposite to each other, and the pipe 210 is located between the first surface 111 and the second surface 112. The high-speed zone 212 includes a fifth end face E5 and a sixth end face E6 opposite to each other. The fifth end face E5 is connected to the second end face E2 of the acceleration zone 211, and the sixth end face E6 is connected to the third end face E3 of the inlet zone 213. The flow boosting zone 214 includes a seventh end face E7 and an eighth end face E8 opposite to each other. The seventh end face E7 is connected to the fourth end face E4 of the inlet zone 213. The first fan 220 corresponds to the first end face E1 of the pipe 210.

[0013] The cross-sectional area relationships between the end faces of the acceleration zone 211, high-speed zone 212, inlet zone 213 and flow boosting zone 214 of pipeline 210 are shown in the following equations (1) and (2). …...……………….(1) ….……………………….(2)

[0014] Where A1 is the cross-sectional area of ​​the first end face E1 of the acceleration zone 211, A2 is the cross-sectional area of ​​the second end face E2 of the acceleration zone 211, A3 is the cross-sectional area of ​​the third end face E3 of the inlet zone 213, A4 is the cross-sectional area of ​​the fourth end face E4 of the inlet zone 213, A5 is the cross-sectional area of ​​the fifth end face E5 of the high-speed zone 212, A6 is the cross-sectional area of ​​the sixth end face E6 of the high-speed zone 212, and A7 is the cross-sectional area of ​​the seventh end face E7 of the flow boosting zone 214. From equations (1) and (2) and Figure 2, it can be seen that the cross-sectional area of ​​the acceleration zone 211 gradually decreases from the first end face E1 (cross-sectional area A1) to the second end face E2 (cross-sectional area A2), the cross-sectional area of ​​the inlet zone 213 gradually increases from the third end face E3 (cross-sectional area A3) to the fourth end face E4 (cross-sectional area A4), and the cross-sectional area of ​​the high-speed zone 212 is a constant. The cross-sectional area A7 is smaller than the cross-sectional area A1.

[0015] Therefore, it can be seen that the pipe 210 has a tapered-expanding structure. To avoid the structure of the pipe 210 from adversely affecting the first fan 220 (for example, increasing the system impedance, which would require the first fan 220 to increase its speed, making the first fan 220 more susceptible to damage), the heat dissipation module 20 further includes a second fan 230 to further promote the airflow C1, thereby reducing the impact of system impedance on the first fan 220. In this embodiment, the second fan 230 is disposed at the eighth end face E8 of the flow boosting region 214 of the pipe 210, but is not limited thereto. An outlet of the flow boosting region 214 (i.e., the eighth end face E8 of the flow boosting region 214) is located between the inlet region 213 and the second fan 230.

[0016] When the pipe 210 includes only two main openings (i.e., the first end face E1 and the eighth end face E8) and the airflow C1 in the pipe 210 is laminar, the change in the velocity of the airflow C1 in the pipe 210 can be known from the air mass flow rate. The air mass flow rate is given by the following equation (3). ……………………..(3)

[0017] Where ρ is the gas density, A is the cross-sectional area of ​​each end face of pipe 210, and V is the gas velocity. Here, the gas density is a constant ρ. Substituting equations (1) and (2) into equation (3) yields the following equations (4) and (5). …………………...(4) ………………………….(5)

[0018] Where V1 is the gas velocity at the first end face E1 of the acceleration zone 211, V2 is the gas velocity at the second end face E2 of the acceleration zone 211, V3 is the gas velocity at the third end face E3 of the inlet zone 213, V4 is the gas velocity at the fourth end face E4 of the inlet zone 213, V5 is the gas velocity at the fifth end face E5 of the high-speed zone 212, V6 is the gas velocity at the sixth end face E6 of the high-speed zone 212, and V7 is the gas velocity at the seventh end face E7 of the booster zone 214. Therefore, it can be seen that the pipe 210 changes the velocity of the airflow C1 through the changes in the cross-sectional area of ​​the high-speed zone 212, the inlet zone 213, and the booster zone 214. The gas velocity V7 in the booster zone 214 is greater than the gas velocity of the gas blown out by the first fan 220 (i.e., the gas velocity V1 at the first end face E1). The airflow C1 has the fastest velocity in the high-speed zone 212.

[0019] As shown in Figure 2, the inlet area 213 of the pipe 210 further includes multiple pipe openings 215, which are formed on the second inclined surface S2. The pipe openings 215 face the first surface 111 and the second surface 112 of the housing 110, but are not limited thereto. The pipe openings 215 are used to introduce gas (i.e., air) into a space P1 between the housing 110 and the pipe 210. The gas entering the pipe 210 from the pipe openings 215 can form a vortex spray effect, which can effectively dissipate heat from the heat source 120, thereby improving the heat dissipation efficiency of the server 10.

[0020] The pressure value of space P2 within pipe 210 is less than the pressure value of space P2 between shell 110 and pipe 210. When the gas flow property is laminar, the viscosity effect has a significant impact on the gas flow. See equation (6). ………………………………(6)

[0021] Where Re is the Reynolds number, ρ is the gas density, L is the characteristic length, and μ is the dynamic viscosity. According to equation (6), when the gas flow is laminar and the Reynolds number Re and the gas density ρ are constant, the dynamic viscosity μ is proportional to the product of the gas velocity V and the characteristic length L. As shown in Figure 2, the characteristic length of the sixth end face E6 of the high-speed region 212 (i.e., the sum of the length L1 of the acceleration region 211 along the central axis L5 of the pipe and the length L2 of the high-speed region 212 along the central axis L5 of the pipe) is greater than the characteristic length L of the fifth end face E5 (i.e., the length L1 of the acceleration region 211), and the gas velocity in the high-speed region 212 is larger, which makes the dynamic viscosity μ of the airflow C1 at the sixth end face E6 larger.

[0022] Pipeline 210 utilizes the dynamic viscosity of airflow C1 at the sixth end face E6 and the pressure difference between spaces P1 and P2 to introduce gas from space P1 into the inlet area 213 of pipeline 210 through pipe opening 215, forming an auxiliary airflow C2. The auxiliary airflow C2 is propelled by the second fan 230 and moves with airflow C1 towards the booster area 214, increasing the amount of gas available for heat exchange within the booster area 214. The heat dissipation module 20 exchanges heat with the heat source 120 through the low-heat-energy airflow C1 and the auxiliary airflow C2. After heat exchange, the high-heat-energy airflow is propelled by the second fan 230 and quickly moves away from the heat dissipation module 20 (server 10), thereby improving the heat dissipation efficiency of the server 10.

[0023] The gas pressure between the housing 110 and the pipe 210 (i.e., the gas pressure in space P1) is less than the gas pressure in the high-speed zone 212. The gas pressure in the high-speed zone 212 is less than the gas pressure in the acceleration zone 211, the inlet zone 213, or the booster zone 214. The gas pressure at the outlet (eighth end face E8) of the booster zone 214 is less than the gas pressure at the first end face E1.

[0024] Furthermore, since the second inclined surface S2 faces the high-speed zone 212, when the auxiliary airflow C2 enters the pipe 210, it can prevent the auxiliary airflow C2 from directly impacting the airflow C1 inside the pipe 210, making the process of the auxiliary airflow C2 entering the pipe 210 smoother. In this embodiment, the length L2 of the high-speed zone 212 is greater than a length L4 of the boosting zone 214, the length L4 of the boosting zone 214 is greater than the length L1 of the acceleration zone 211, and the length L1 of the acceleration zone 211 is greater than a length L3 of the inlet zone 213, but it is not limited thereto. In an embodiment not shown, the heat source 120 of the server 10 may be located outside the pipe 210 and disposed on one side of the second fan 230. That is, the second fan 230 is located between the pipe 210 and the heat source 120.

[0025] Figure 3 is a schematic diagram of a heat dissipation module according to another embodiment of the present invention. Figure 4 is a cross-sectional view of the heat dissipation module of Figure 3. Referring simultaneously to Figures 2 to 4, the heat dissipation module 20a (server 10a) of this embodiment is similar to that of the aforementioned embodiment, except that the housing 110a of this embodiment includes a plurality of housing openings 113. These housing openings 113 are formed on the first surface 111a and the second surface 112a of the housing 110a, but are not limited thereto. At least a portion of these housing openings 113 correspond to the pipe openings 215 of the pipe 210. The housing openings 113 may be arranged in an array, but are not limited thereto. Gas in the external environment (i.e., air outside the housing 110a) can enter the inlet area 213 of the pipe 210 through these housing openings 113 and the pipe openings 215.

[0026] At least a portion of these housing openings 113 project onto the pipe 210 at the sixth end face E6 of the high-speed zone 212. Since the dynamic viscosity of the airflow C1 at the sixth end face E6 is greater than that at the fifth end face E5, the heat dissipation module 20a can use the dynamic viscosity of the airflow C1 at the sixth end face E6, the housing openings 113 and pipe openings 215 corresponding to the sixth end face E6, and the pressure difference between the external environment and the two spaces P1 and P2 to introduce gas from the external environment into the inlet area 213 of the pipe 210 through the housing openings 113 and pipe openings 215 to form another auxiliary airflow C3. This further increases the amount of gas available for heat exchange in the flow boosting area 214 of the pipe 210, thereby further improving the heat dissipation efficiency of the server 10a.

[0027] To allow the auxiliary airflow guided by the dynamic viscosity of the airflow C1 at the sixth end face E6 through the conduit 210, at least a portion of these housing openings 113 are projected onto the sixth end face E6 of the conduit 210. In this embodiment, the projections of these housing openings 113 onto the conduit 210 correspond to the high-speed region 212, the inlet region 213, and the flow-boosting region 214, but are not limited thereto. In an embodiment not shown, the projections of these housing openings 113 onto the conduit 210 may correspond only to the sixth end face E6 of the high-speed region 212. In an embodiment not shown, the projections of these housing openings 113 onto the conduit 210 may correspond to both the sixth end face E6 of the high-speed region 212 and the inlet region 213. The heat dissipation module 20a (server 10a) of this embodiment has similar effects to the above embodiment, and will not be described again here.

[0028] Figure 5 is a cross-sectional view of a heat dissipation module according to another embodiment of the present invention. Referring simultaneously to Figures 2 and 5, the heat dissipation module 20b (server 10b) of this embodiment is similar to that of the aforementioned embodiment, except that in this embodiment, the first fan 220 is located between the second fan 230 and the first end face E1 of the pipe 210, and the second fan 230 is connected in parallel to the first fan 220. This increases the static pressure of the fans to resist the system impedance of the gradually expanding pipe 210, resulting in better heat dissipation efficiency for the heat dissipation module 20b (server 10b). The heat dissipation module 20b (server 10b) of this embodiment has similar effects to the above embodiments, and will not be described again here.

[0029] Figure 6 is a simplified block diagram of a server according to another embodiment of the present invention. Referring simultaneously to Figures 1 and 5, the heat dissipation module 20c (server 10c) of this embodiment is similar to that of the aforementioned embodiments, except that the number of heat dissipation modules 20c in this embodiment is multiple, and these heat dissipation modules 20c are arranged in an M x N matrix. Where M and N are positive integers. When M is greater than or equal to 1, N is greater than 1; or when N is greater than or equal to 1, M is greater than 1. For example, the number of these heat dissipation modules 20c in this embodiment is four, and these heat dissipation modules 20c are arranged in a 3 x 1 matrix (i.e., M equals 3, N equals 1), but are not limited thereto. The arrangement of the components (pipes 210, first fan 220, and second fan 230) of these heat dissipation modules 20c can be one of the aforementioned embodiments or a combination thereof. The heat dissipation module 20c (server 10c) of this embodiment has similar effects to the above embodiments, and will not be described again here.

[0030] In summary, the first inclined surface of the heat dissipation module of the present invention faces the second inclined surface. Two fans are disposed on both sides of the pipe to drive the airflow within the pipe. Through the cooperation between the various zones of the pipe, the gas flow velocity in the boosting zone is greater than the gas flow velocity at the first end face of the acceleration zone. In this way, the heat dissipation module can increase the gas flow velocity, enabling the gas to quickly exchange heat with the heat source and leave the heat dissipation module, thereby improving the heat dissipation efficiency of the heat dissipation module and the server.

[0031] C1: Airflow C2, C3: Auxiliary airflow E1: First end face E2: Second end face E3: Third end face E4: Fourth end face E5: Fifth end face E6: Sixth end face E7: Seventh end face E8: Eighth end face L1, L2, L3, L4: Length L5: Pipeline center axis P1, P2: Space S1: First inclined plane S2: Second inclined plane 10, 10a, 10b, 10c: Servers 11: Chassis 20, 20a, 20b, 20c: Heat dissipation modules 110, 110a: Shell 111, 111a: First page 112, 112a: Second page 113: Shell opening 120: Heat source 210: Piping 211: Acceleration Zone 212: Expressway Area 213: Import Area 214: Flow Enhancement Zone 215: Pipe opening 220: First Fan 230: Second Fan

Claims

1. A heat dissipation module, comprising: A conduit includes: an acceleration zone comprising a first end face, a second end face, and a first inclined surface, wherein one side of the first inclined surface is adjacent to the first end face, and the other side of the first inclined surface is adjacent to the second end face, and the distance from the first inclined surface to the central axis of the conduit decreases from the side adjacent to the first end face to the side adjacent to the second end face; a high-speed zone connected to the second end face; an inlet zone comprising a third end face, a fourth end face, and a second inclined surface, wherein the third end face is connected to the high-speed zone, one side of the second inclined surface is adjacent to the third end face, and the other side of the second inclined surface is adjacent to the fourth end face, and the distance from the second inclined surface to the central axis of the conduit increases from the side adjacent to the third end face to the side adjacent to the fourth end face; a flow boosting zone connected to the fourth end face; a first fan disposed on the first end face, the first end face being located between the second end face and the first fan; and a heat source disposed within the flow boosting zone. The inlet area includes multiple pipe openings formed on the second inclined surface.

2. The heat dissipation module as claimed in claim 1, wherein the gas flow rate in the booster zone is greater than the gas flow rate in the first end face.

3. The heat dissipation module as claimed in claim 1 further includes a second fan disposed at an outlet of the flow boosting zone, the outlet being located between the inlet zone and the second fan.

4. The heat dissipation module as claimed in claim 1 further includes a second fan, the first fan being located between the second fan and the first end face.

5. The heat dissipation module as claimed in claim 1, wherein the cross-sectional area of ​​the acceleration zone gradually decreases from the first end face to the second end face, and the cross-sectional area of ​​the induction zone gradually increases from the third end face to the fourth end face.

6. The heat dissipation module as claimed in claim 1, wherein the first inclined surface and the second inclined surface face the high-speed region.

7. The heat dissipation module as claimed in claim 6 further includes a housing, the conduit being disposed within the housing, and a gas pressure between the housing and the conduit being greater than a gas pressure in the high-speed zone.

8. The heat dissipation module as claimed in claim 6 further includes a housing, the pipeline being disposed within the housing, the housing including a first surface, a second surface and a plurality of housing openings, the pipeline being located between the first surface and the second surface, the housing openings being formed on the first surface and the second surface, and at least partially corresponding to the plurality of pipeline openings in the inlet area.

9. The heat dissipation module as claimed in claim 8, wherein the high-speed zone includes a fifth end face and a sixth end face opposite to each other, the fifth end face being connected to the second end face, the sixth end face being connected to the third end face, and at least a portion of the housing openings having an orthographic projection of the conduit located on the sixth end face.

10. The heat dissipation module as claimed in claim 1, wherein a length of the high-speed region is greater than a length of the current-boosting region.

11. The heat dissipation module as claimed in claim 1, wherein a length of the current boosting region is greater than a length of the acceleration region.

12. The heat dissipation module as claimed in claim 1, wherein a length of the acceleration region is greater than a length of the induction region.

13. The heat dissipation module as claimed in claim 1, wherein a gas pressure in the high-speed zone is less than a gas pressure in the acceleration zone, a gas pressure in the inlet zone, or a gas pressure in the booster zone.

14. The heat dissipation module as claimed in claim 1, wherein a gas pressure at an outlet of the flow boosting zone is less than a gas pressure at the first end face.

15. The heat dissipation module as claimed in claim 1 further includes a housing, wherein the conduit is disposed within the housing.

16. A server, comprising: One chassis; And at least one heat dissipation module as described in any one of claims 1 to 15, configured within the chassis.

17. The server as claimed in claim 16, wherein the at least one heat dissipation module comprises a plurality of heat dissipation modules arranged in an M-N matrix.

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