TWM639655U - Electronic device and cooling module thereof - Google Patents

Abstract

A cooling module is provided. The cooling module includes a module housing. An fluid inlet, an fluid outlet, a connection path, a first chamber and a second chamber are formed on the module housing. The fluid inlet is communicated to the first chamber. The fluid outlet is communicated to the second chamber. The connection path communicates the first chamber and the second chamber. An air exhausting path is formed on the module housing. The air exhausting path communicates the first chamber and the second chamber. The path width of the air exhausting path is smaller than that of the connection path. Compared with the connection path, the air exhausting path is adjacent to the fluid inlet and the fluid outlet.

Description

Electronic device and its cooling module

The embodiment of the present invention relates to a cooling module, in particular to a cooling module applied to electronic devices.

Most of the liquid cooling modules on the market have the problem of trapped air in the flow channel due to internal air bubbles. However, in the prior art, the main solution is mostly to reduce the generation of air bubbles in the waterway by changing the flow direction of the waterway. In fact, internal air bubbles: (a) jet flow at the coolant inlet, (b) turbulent flow, (c) large change in water flow direction; or (d) sudden reduction in cross-sectional area of the water channel, etc. However, the generation of air bubbles will cause unsmoothness in the flow channel of the water channel and reduce the pressure difference between the inlet and outlet of the water channel, and will also cause unstable heat dissipation effects in various regions, thereby reducing the heat dissipation efficiency of the overall cooling module.

The embodiment of the invention is to provide a cooling module for solving the problems of the prior art, including a module housing. The module housing is formed with a fluid inlet, a fluid outlet, a connecting channel, a first chamber and a first Two chambers, the fluid inlet is connected to the first chamber, the fluid outlet is connected to the second chamber, and the connection channel is connected to the first chamber and the second chamber. The module casing further forms an exhaust channel, the exhaust channel connects the first chamber and the second chamber, and the channel width of the exhaust channel is smaller than the channel width of the connecting channel. Compared with the connection channel, the exhaust channel is closer to the fluid inlet and the fluid outlet.

In one embodiment, a working fluid is adapted to enter the first chamber from the fluid inlet, reach the second chamber through the connecting channel, and leave the module housing through the fluid outlet. At least one bubble is formed, the bubble is adapted to reach the second chamber from the first chamber through the exhaust channel.

In one embodiment, a first end of the exhaust channel is connected to the first chamber, a second end of the exhaust channel is connected to the second chamber, and the distance between the first end and the fluid inlet is greater than the distance between the second end and the fluid outlet.

In one embodiment, the working fluid enters the first chamber from the fluid inlet along a U-shaped path, reaches the second chamber through the connecting channel, and leaves the module housing through the fluid outlet. .

In one embodiment, the channel width of the connecting channel is equal to or greater than 5 times of the channel width of the exhaust channel.

In one embodiment, the first chamber includes a first conical zone and a first cooling zone, the first conical zone includes a wall surface of the first conical zone, the first cooling zone includes a first cooling zone wall, the first tapered zone wall and the second The angle between the walls of a cooling zone is less than 180 degrees, there is a first turning point between the wall surface of the first conical zone and the wall surface of the first cooling zone, and the first end of the exhaust passage is connected to the first turning point .

In one embodiment, the second chamber includes a second conical region and a second cooling region, the second conical region includes a second conical region wall, the second cooling region includes a second cooling Zone wall, the angle between the second conical zone wall and the second cooling zone wall is less than 180 degrees, there is a second turning point between the second conical zone wall and the second cooling zone wall, the row The second end of the air channel is connected to the second turning point.

In one embodiment, the module housing is further formed with a plurality of first fins and a plurality of second fins, the first fins are arranged in the first cooling area and parallel to each other, the second fins The sheets are arranged in the second cooling zone and parallel to each other.

In one embodiment, the first conical zone includes a wall surface of a third conical zone, and relative to the wall surface of the first cooling zone, the slope of the wall surface of the third conical zone is smaller than the slope of the wall surface of the first conical zone.

In another embodiment, the present invention provides an electronic device including a circuit board, at least one heat source and a cooling module. The heat source is arranged on the circuit board. The cooling module includes a module housing, the module housing is thermally connected to the heat source, the module housing forms a fluid inlet, a fluid outlet, a connecting channel, a first chamber and a second chamber , the fluid inlet is connected to the first chamber, the fluid outlet is connected to the second chamber, and the connecting channel is connected to the first chamber and the second chamber. The module housing is further formed with an exhaust passage, which connects the first chamber and the second chamber, and the passage width of the exhaust passage is smaller than that of the connecting chamber. The channel width of the connection channel. Compared with the connection channel, the exhaust channel is closer to the fluid inlet and the fluid outlet.

With the cooling module of the present invention, air bubbles take a shortcut from the first chamber to the second chamber through the exhaust channel, and are discharged through the fluid outlet. Therefore, air bubbles do not pass through or accumulate in the working fluid channel in the cooling module. Compared with the conventional technology, the cooling module of the embodiment of the invention has improved the problem of unsmooth flow in the water channel, and also improved the heat dissipation efficiency of the overall cooling module.

E: electronic device

M: cooling module

F: working fluid

B: Bubbles

C: Bracket

11: Fluid inlet

12: The first chamber

121: The first cone

122: The first cooling zone

123: Wall surface of the first conical zone

124: Wall surface of the first cooling zone

125: The first turning point

126: Wall surface of the third cone zone

21: Fluid outlet

22: The second chamber

221:Second cone area

222: Second Cooling Zone

223: the wall of the second cone zone

224: Wall surface of the second cooling zone

225: The second turning point

3: Connection channel

4: exhaust channel

41: first end

42: second end

51: First fin

52: Second fin

7:Module housing

81: top cover

82: Lower cover

91: circuit board

92: heat source

d1: channel width

d2: channel width

θ 1: included angle

Fig. 1 is a perspective view showing the electronic device of the embodiment of the present invention.

Fig. 2 is an exploded view showing the electronic device of the embodiment of the present invention.

Figure 3 shows the detailed structure of the cooling module of the embodiment of the present invention.

Fig. 4 shows the detailed structure of the exhaust channel of the present creation embodiment.

Fig. 5 shows the application situation of the electronic device of the embodiment of the present invention.

Fig. 1 is a perspective view showing the electronic device of the embodiment of the present invention. Fig. 2 is an exploded view showing the electronic device of the embodiment of the present invention. With reference to Figures 1 and 2, the electronic device E of the present invention includes a circuit board 91, at least one heat source 92, and a cooling module M. Heat source 92 is located on the circuit board Above 91. The cooling module M includes a module housing 7 , and the module housing 7 is thermally connected to the heat source 92 .

Figure 3 shows the detailed structure of the cooling module of the embodiment of the present invention. Referring to Fig. 3, the module housing 7 of the present creation embodiment forms a fluid inlet 11, a fluid outlet 21, a connecting channel 3, a first chamber 12 and a second chamber 22, and the fluid inlet 11 is connected to The first chamber 12 and the fluid outlet 21 are connected to the second chamber 22 , and the connecting channel 3 is connected to the first chamber 12 and the second chamber 22 . The module housing 7 is further formed with an exhaust passage 4, the exhaust passage 4 connects the first chamber 12 and the second chamber 22, the passage width d1 of the exhaust passage 4 is smaller than the passage of the connecting passage 3 width d2. Compared with the connection channel 3 , the exhaust channel 4 is closer to the fluid inlet 11 and the fluid outlet 21 . In other words, when the cooling module M is set upright, the height of the exhaust channel 4 is higher than that of the connecting channel 3 .

Referring to Fig. 3, in one embodiment, a working fluid F is adapted to enter the first chamber 12 from the fluid inlet 11, and arrive at the second chamber 22 through the connecting channel 3, and then pass through the fluid outlet 21 Leaving the module housing 7 , at least one air bubble B is formed in the working fluid F, and the air bubble B is adapted to reach the second chamber 22 from the first chamber 12 through the exhaust channel 4 .

Fig. 4 shows the detailed structure of the exhaust channel of the present creation embodiment. With reference to Figures 3 and 4, in one embodiment, a first end 41 of the exhaust passage 4 is connected to the first chamber 12, and a second end 42 of the exhaust passage 4 is connected to the second chamber 22 , the distance between the first end 41 and the fluid inlet 11 is greater than the distance between the second end 42 and the fluid outlet 21 . In other words, when the cold When the cooling module M is set upright, the height of the second end 42 is higher than the height of the first end 41, so the air bubbles B can pass through the first chamber 12 through the exhaust channel 4 through the buoyancy to reach the second end. Chamber 22.

Referring to FIG. 3, in one embodiment, the working fluid F enters the first chamber 12 from the fluid inlet 11 along a U-shaped path, and reaches the second chamber 22 through the connecting channel 3, and then It exits the module housing 7 through the fluid outlet 21 .

Referring to FIG. 3 , in one embodiment, the channel width d2 of the connecting channel 3 is equal to or greater than 5 times the channel width d1 of the exhaust channel 4 . Due to the low resistance of the connecting channel 3 , the working fluid F tends to pass through the connecting channel 3 from the first chamber 12 to reach the second chamber 22 .

With reference to Figures 3 and 4, in one embodiment, the first chamber 12 includes a first conical zone 121 and a first cooling zone 122, and the first conical zone 121 includes a first conical zone Wall surface 123, the first cooling zone 122 includes a first cooling zone wall surface 124, the angle θ1 between the first conical zone wall surface 123 and the first cooling zone wall surface 124 is less than 180 degrees, the first conical zone wall surface There is a first turning point 125 between 123 and the wall surface 124 of the first cooling zone, and the first end 41 of the exhaust passage 4 is connected to the first turning point 125 . When the cooling module M is set upright, the air bubbles B are easy to accumulate on the wall surface 123 of the first tapered region and the first turning point 125, so the first end 41 of the exhaust passage 4 is connected to the first Turning point 125 to facilitate the removal of bubble B.

Referring to Fig. 3, in one embodiment, the second chamber 22 includes a second conical zone 221 and a second cooling zone 222, the second conical zone 221 Including a second conical zone wall surface 223, the second cooling zone 222 includes a second cooling zone wall surface 224, the angle between the second conical zone wall surface 223 and the second cooling zone wall surface 224 is less than 180 degrees, the There is a second turning point 225 between the wall surface 223 of the second conical zone and the wall surface 224 of the second cooling zone, and the second end 42 of the exhaust passage 4 is connected to the second turning point 225 . However, the above disclosure does not limit the present invention. For example, in another embodiment, the shape of the second chamber 22 may also be appropriately adjusted. Overall, based on the buoyancy of the bubbles and the drive of the working fluid F, after the bubbles B reach the second chamber 22 , the bubbles B can be quickly and smoothly discharged through the fluid outlet 21 .

Referring to Fig. 3, in one embodiment, the module case 7 is further formed with a plurality of first fins 51 and a plurality of second fins 52, and the first fins 51 are arranged in the first cooling area 122 and parallel to each other, the second fins 52 are disposed on the second cooling area 222 and parallel to each other. The first fins 51 and the second fins 52 increase the contact area between the working fluid F and the module housing 7 , thus improving the heat dissipation efficiency. In one embodiment, since the exhaust passage 4 connects the first conical region 121 and the second conical region 221, it is possible to avoid air bubbles B from entering the first cooling region 122 and the second cooling region 222, thereby improving The cooling efficiency of the cooling module M.

Referring to Fig. 3, in one embodiment, the first conical zone 121 includes a third conical zone wall surface 126, with respect to the first cooling zone wall surface 124, the slope of the third conical zone wall surface 126 is smaller than the The slope of the wall surface 123 of the first tapered region. In one embodiment, the bubbles B can be densely packed in the first cone The wall surface 123 of the shape zone, so the air bubbles B can be removed through the exhaust channel 4 more effectively.

With reference to Figures 1 and 2, in one embodiment, the electronic device E of the embodiment of the invention further includes an upper cover 81 and a lower cover 82, the upper cover 81 is connected to the module housing 7, and covers (or jointly constitutes ) the aforementioned fluid inlet 11 , fluid outlet 21 , connecting channel 3 , exhaust channel 4 , first chamber 12 and second chamber 22 . In one embodiment, the upper cover 81 can be a part of the cooling module M. As shown in FIG. The lower cover 82 is connected to the module housing 7 and covers the circuit board 91 .

In this embodiment, the cooling module M is part of the appearance of the electronic device E. The above disclosure does not limit the present work. In another embodiment, the cooling module M can also be disposed inside an electronic device (such as a server).

Fig. 5 shows the application situation of the electronic device of the embodiment of the present invention. In order to provide the function of removing air bubbles, the electronic device E (and its cooling module) of the present invention must be arranged in an upright manner. For example, in the embodiment of FIG. 5, both the fluid inlet and the fluid outlet are facing upward. However, the disclosure in FIG. 5 does not limit the invention. For example, in another upright state, the second chamber can be located above the first chamber, which can also provide the function of removing air bubbles. Referring to FIG. 5 again, the electronic device E can be installed upright through a bracket C. Referring to FIG. In one embodiment, the electronic device E can be an electronic device for a vehicle, and it is arranged on the side of the driver's seat, under the passenger pedal of the vehicle, below or on the side of the passenger seat of the vehicle, the inner layer of the trunk of the vehicle, etc. Location. The above disclosure does not limit the present work.

With the cooling module of the present invention, air bubbles take a shortcut from the first chamber to the second chamber through the exhaust channel, and are discharged through the fluid outlet. Therefore, air bubbles do not pass through or accumulate in the working fluid channel in the cooling module. Compared with the conventional technology, the cooling module of the embodiment of the invention has improved the problem of unsmooth flow in the water channel, and also improved the heat dissipation efficiency of the overall cooling module.

Although this creation has been disclosed above with specific preferred embodiments, it is not intended to limit this creation. Anyone who is familiar with this technology can still make some changes and modifications without departing from the spirit and scope of this creation. Therefore, the scope of protection of this creation should be defined by the scope of the attached patent application.

F: working fluid

B: Bubbles

11: Fluid inlet

12: The first chamber

121: The first cone

122: The first cooling zone

123: Wall surface of the first conical zone

124: Wall surface of the first cooling zone

125: The first turning point

126: Wall surface of the third cone zone

21: Fluid outlet

22: The second chamber

221:Second cone area

222: Second Cooling Zone

223: the wall of the second cone zone

224: Wall surface of the second cooling zone

225: The second turning point

3: Connection channel

4: exhaust channel

51: First fin

52: Second fin

7:Module housing

d1: channel width

d2: channel width

Claims (10)

A cooling module comprising: A module housing, wherein the module housing forms a fluid inlet, a fluid outlet, a connecting channel, a first chamber and a second chamber, the fluid inlet is connected to the first chamber, the fluid The outlet is connected to the second chamber, and the connection channel is connected to the first chamber and the second chamber; Wherein, the module housing is further formed with an exhaust channel, the exhaust channel connects the first chamber and the second chamber, and the channel width of the exhaust channel is smaller than the channel width of the connecting channel; Wherein, compared with the connection channel, the exhaust channel is closer to the fluid inlet and the fluid outlet. The cooling module as claimed in claim 1, wherein a working fluid is adapted to enter the first chamber from the fluid inlet, reach the second chamber through the connecting channel, and leave the module through the fluid outlet In the casing, at least one air bubble is formed in the working fluid, and the air bubble is suitable to reach the second chamber from the first chamber through the exhaust channel. The cooling module as described in claim 2, wherein, one first end of the exhaust passage is connected to the first chamber, one second end of the exhaust passage is connected to the second chamber, and the first end is connected to the second chamber. The distance between the fluid inlet is greater than the distance between the second end and the fluid outlet. The cooling module as described in claim 3, wherein the working fluid enters the first chamber from the fluid inlet along a U-shaped path, and reaches the second chamber through the connecting channel, and then passes through the fluid An outlet exits the module housing. The cooling module according to claim 3, wherein the channel width of the connecting channel is equal to or greater than 5 times of the channel width of the exhaust channel. The cooling module as described in claim 3, wherein the first chamber includes a first conical region and a first cooling region, the first conical region includes a wall surface of the first conical region, the first The cooling zone includes a wall surface of the first cooling zone, the angle between the wall surface of the first conical zone and the wall surface of the first cooling zone is less than 180 degrees, and there is a At the first turning point, the first end of the exhaust passage is connected to the first turning point. The cooling module according to claim 6, wherein the second chamber includes a second conical region and a second cooling region, the second conical region includes a second conical region wall surface, the second The cooling zone includes a wall surface of the second cooling zone, the angle between the wall surface of the second conical zone and the wall surface of the second cooling zone is less than 180 degrees, and there is a At the second turning point, the second end of the exhaust channel is connected to the second turning point. The cooling module according to claim 7, wherein the module housing is further formed with a plurality of first fins and a plurality of second fins, and the first fins are arranged in the first cooling area and mutually Parallel, the second fins are arranged in the second cooling zone and parallel to each other. The cooling module according to claim 6, wherein the first conical zone includes a third conical zone wall, and the slope of the third conical zone wall is smaller than the first conical zone wall with respect to the first cooling zone The slope of the wall of the cone. An electronic device comprising: a circuit board; at least one heat source located on the circuit board; and A cooling module, wherein the cooling module includes a module casing, the module casing is thermally connected to the heat source, and the module casing is formed with a fluid inlet, a fluid outlet, a connecting channel, and a first cavity chamber and a second chamber, the fluid inlet is connected to the first chamber, the fluid outlet is connected to the second chamber, and the connecting channel is connected to the first chamber and the second chamber; Wherein, the module housing is further formed with an exhaust channel, the exhaust channel connects the first chamber and the second chamber, and the channel width of the exhaust channel is smaller than the channel width of the connecting channel; Wherein, compared with the connection channel, the exhaust channel is closer to the fluid inlet and the fluid outlet.

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