Supporting column, liquid return column, vapor chamber and electronic equipment

Abstract

The utility model relates to a support column, a liquid return column, a vapor chamber and electronic equipment. The supporting column is provided with a liquid collecting structure; the column body is hollow to form a liquid return channel, the column body is provided with a liquid return opening and a liquid outlet, the liquid return opening is communicated between the liquid collecting structure and the liquid return channel, and the liquid outlet is communicated between the liquid return channel and the periphery of the lower portion. A top plate of the uniform-temperature plate is provided with a raised liquid collecting bulge which is opposite to the liquid collecting structure. The liquid return column comprises a column body, the column body comprises an upper portion and a lower portion which are opposite in the axial direction of the column body, the column body is hollow to form a liquid return channel, a liquid return opening is formed in the axial end of the upper portion, a liquid outlet is formed in the lower portion, and the liquid return opening, the liquid return channel, the liquid outlet and the periphery of the lower portion are sequentially communicated. A top plate of the uniform-temperature plate is provided with a raised liquid collecting bulge, and the peak part is over against the liquid return opening along the axial direction. The electronic equipment comprises the vapor chamber, gas-liquid circulation phase separation in the vapor chamber is achieved, the liquid film thickness of a condensation section is reduced, and the heat exchange performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat transfer device technical field, concretely relates to a liquid collecting support column, liquid return column, uniform temperature plate and electronic equipment. BACKGROUND

[0002] The uniform temperature plate is widely applied in high heat flow density electronic device heat dissipation as a new two-phase flow heat dissipation technology, overcomes the small contact area of traditional heat pipe, heat flow density uneven etc.

[0003] The existing uniform temperature plate has the problems that gas and liquid flow in opposite directions and in the same cavity, there is no phase separation gas and liquid flow channel, vapor flow is easy to carry condensed liquid, even gas and liquid reverse flow phenomenon occurs, influences the balance of gas and liquid circulation, increases the liquid film thickness of condensation section and leads to the increase of thermal resistance, reduces the heat exchange performance. UTILITY MODEL CONTENTS

[0004] The first purpose of the utility model is to provide a support column with liquid collecting function for uniform temperature plate, which realizes the phase separation of internal gas and liquid circulation of the uniform temperature plate, reduces the liquid film thickness of the condensation section and improves the heat exchange performance.

[0005] The second purpose of the utility model is to provide a uniform temperature plate with internal gas and liquid circulation phase separation, reduced liquid film thickness of the condensation section and improved heat exchange performance.

[0006] The third purpose of the utility model is to provide a liquid return column with liquid collecting function for uniform temperature plate, which realizes the phase separation of internal gas and liquid circulation of the uniform temperature plate, reduces the liquid film thickness of the condensation section and improves the heat exchange performance.

[0007] The fourth purpose of the utility model is to provide another uniform temperature plate with internal gas and liquid circulation phase separation, reduced liquid film thickness of the condensation section and improved heat exchange performance.

[0008] The fifth purpose of the utility model is to provide an electronic equipment with improved heat exchange performance.

[0009] The utility model discloses a first purpose provides support column, including the cylinder, the cylinder includes the upper part and lower part opposite along the self axial direction, still include the liquid collecting structure, the liquid collecting structure is connected in the outer peripheral surface of upper part, the hollow cylinder forms the back liquid channel, and the upper part sets back liquid mouth, and the lower part sets the liquid outlet, and back liquid mouth is connected between the liquid collecting structure and back liquid channel, and the liquid outlet is connected between back liquid channel and the outer periphery of lower part.

[0010] From the above scheme can see, on the cylinder of support column open back liquid mouth, and set up back liquid channel and its lower part sets up liquid outlet in its inside, realize the phase separation of vapor - liquid circulation in the vapor chamber, make steam, condensed liquid have respective flow channel, avoid the problem that steam flow carries condensed liquid, eliminate vapor - liquid countercurrent phenomenon, strengthen the balance of vapor - liquid circulation, reduce condensed section liquid film thickness, improve the heat transfer performance.

[0011] Further scheme is, the liquid collecting structure is set up into the spiral structure around the cylinder, and the spiral structure includes the spiral end near the lower part, and back liquid mouth is connected in the spiral end.

[0012] From the above can see, the spiral structure is set up around the outer periphery of cylinder, can collect liquid in all directions, improve the collection efficiency and improve the liquid collecting effect, more conducive to achieve the phase separation of vapor - liquid circulation in the vapor chamber.

[0013] Further scheme is, the spiral end is provided with the baffle.

[0014] From the above can see, the baffle can block the liquid of liquid collecting surface from continuing to flow in the spiral direction, guarantee that liquid enters back liquid mouth.

[0015] Further scheme is, the liquid collecting structure includes the liquid collecting surface, and the liquid collecting surface gradually extends to the outer peripheral surface of cylinder along the radial direction of cylinder and along the direction of the axis of cylinder and approaches the lower part.

[0016] From the above can see, the liquid collecting surface of inclined setting can guide liquid to enter back liquid mouth better, more conducive to achieve the phase separation of vapor - liquid circulation in the vapor chamber.

[0017] In addition further scheme is, still include the countersunk head and the connecting portion, and the countersunk head, the connecting portion and the upper portion are sequentially connected along the axial direction, and the connecting portion is provided with the first external thread.

[0018] From the above can see, utilize the countersunk head and the connecting portion and the countersunk hole and the connecting hole on the top cap are matched respectively, can reduce the positioning and the installation difficulty of multiple support columns, optimize the assembly structure, improve the assembly efficiency.

[0019] The utility model discloses a second purpose vapor chamber includes the top plate and bottom plate of relative setting, and the support column of support between top plate and bottom plate, support column uses above -mentioned support column, and the inner surface of top plate is equipped with the liquid collecting protruding body that protrude towards bottom plate, and the liquid collecting protruding body surrounds the outer periphery of support column and is opposite with the liquid collecting structure along the axial direction.

[0020] From the above scheme, the liquid working medium on the inner surface of the top plate will gather on the surface of the liquid collecting protrusion, the liquid working medium of the liquid collecting protrusion will drop on the liquid collecting structure of the support column and then be guided into the liquid return channel, and finally be sent out from the liquid outlet back to the liquid pool on the bottom plate, realizing the separation of gas-liquid circulation in the uniform temperature plate, so that the vapor and the condensed liquid have their own flow channels, avoiding the problem of vapor flow carrying condensed liquid, eliminating the gas-liquid counterflow phenomenon, enhancing the balance of gas-liquid circulation, reducing the liquid film thickness of the condensation section, and improving the heat exchange performance.

[0021] Further, the support column further comprises a countersunk head and a first connecting portion, the countersunk head, the first connecting portion and the upper portion are connected in sequence along the axial direction; the top plate is provided with a countersunk hole and a first connecting hole which are communicated in sequence along the thickness direction of the top plate, the countersunk head is matched with the countersunk hole, and the first connecting portion is threadedly connected with the first connecting hole.

[0022] As can be seen from the above, the countersunk head and the connecting portion are matched with the countersunk hole and the connecting hole on the top cover respectively, which can reduce the positioning and installation difficulty of the plurality of support columns, optimize the assembly structure and improve the assembly efficiency.

[0023] Further, the countersunk head and the countersunk hole are welded and sealed.

[0024] As can be seen from the above, after the assembly of the uniform temperature plate is quickly completed by matching the countersunk head with the countersunk hole and matching the connecting portion with the connecting hole, the brazing sealing between the countersunk hole and the countersunk head can ensure the sealing performance of the uniform temperature plate.

[0025] In addition, further, the uniform temperature plate further comprises a liquid absorbing core, the liquid absorbing core is provided with an avoiding hole, the liquid absorbing core is laid on the bottom plate, and the column body is matched with the avoiding hole.

[0026] As can be seen from the above, the liquid absorbing core provides a stable environment and channel for the gas-liquid conversion of the working medium. It can timely transport the liquid working medium at the condensation end to the evaporation end, ensure that there is enough liquid working medium for evaporation at the evaporation end, and at the same time smoothly guide the gaseous working medium generated by evaporation to the condensation end for condensation, thereby promoting the efficient circulation of the working medium in the uniform temperature plate and improving the heat dissipation efficiency of the uniform temperature plate.

[0027] The utility model discloses a third purpose provides a liquid return column, including column body, the column body includes the upper portion and lower portion who are opposite along the axial direction of itself, and the column body is hollow and forms liquid return channel, and the axial end of upper portion is equipped with liquid return, and lower portion is equipped with liquid outlet, and liquid return, liquid return channel, liquid outlet and the outer periphery of lower portion are communicated in proper order.

[0028] From the above scheme can be seen, the liquid column is arranged between the top plate and the bottom plate of the vapor chamber, and then a liquid collecting protrusion protruding towards the bottom plate is arranged on the inner surface of the top plate, the liquid collecting protrusion and the liquid return port of the liquid column are axially opposite, the liquid phase working medium on the inner surface of the top plate is gathered on the surface of the liquid collecting protrusion, and the liquid phase working medium collected by the liquid collecting protrusion drops into the liquid return port and finally flows out from the liquid outlet back to the bottom plate, so that the vapor-liquid circulation phase separation in the vapor chamber is realized, and the heat exchange performance is improved.

[0029] The utility model discloses a fourth purpose provides a vapor chamber, which comprises a top plate and a bottom plate arranged oppositely, and a support column supported between the top plate and the bottom plate; the inner surface of the top plate is provided with a liquid collecting protrusion protruding towards the bottom plate, and the cross-sectional area of the liquid collecting protrusion gradually decreases to the peak portion thereof with the increase of the protruding height; the vapor chamber further comprises a liquid return column fixedly connected with the bottom plate, and a space is formed between the axial end of the liquid return column and the liquid collecting protrusion; and the peak portion is axially opposite to the liquid return port.

[0030] Further, the liquid return column further comprises a second connecting portion connected with the lower portion in the axial direction; the bottom plate is provided with a second connecting hole, and the second connecting portion is threadedly connected with the second connecting hole.

[0031] As can be seen from the above, the liquid return column is installed and fixed through the bottom plate, so that the spacing arrangement of the liquid return column and the top plate is facilitated.

[0032] The electronic device provided by the utility model comprises a vapor chamber, and the vapor chamber adopts the above-mentioned vapor chamber. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is a structure schematic view of the first embodiment of the vapor chamber of the utility model under section.

[0034] Figure 2 It is a structure exploded view of the first embodiment of the vapor chamber of the utility model.

[0035] Figure 3 It is a structure view of the top cover in the first embodiment of the vapor chamber of the utility model.

[0036] Figure 4 It is the A-A section view in Figure 3

[0037] Figure 5 It is the structure view of the support column in the first embodiment of the vapor chamber of the utility model from the first perspective.

[0038] Figure 6 It is the structure view of the support column in the first embodiment of the vapor chamber of the utility model from the second perspective.

[0039] Figure 7 It is the section view of the support column in the first embodiment of the vapor chamber of the utility model. ​

[0040] Figure 8 It is the structure diagram of the second embodiment of the uniform temperature plate of the utility model under section.

[0041] Figure 9 It is Figure 8 The enlarged view of A in the middle.

[0042] Figure 10 It is the schematic diagram of the bottom plate in the second embodiment of the uniform temperature plate of the utility model.

[0043] Figure 11 It is the structure diagram of the top cover in the second embodiment of the uniform temperature plate of the utility model. DETAILED DESCRIPTION

[0044] The first embodiment of the uniform temperature plate

[0045] Referring to Figure 1 , the uniform temperature plate of the embodiment comprises a bottom shell 1, a top cover 2, a plurality of support columns 3 and a liquid absorbing core 4, the bottom shell 1 comprises a bottom plate 11, the top cover 2 comprises a top plate 21, the bottom plate 11 and the top plate 21 are opposite along the thickness direction of the uniform temperature plate, the support column 3 is supported between the bottom plate 11 and the top plate 21, and the liquid absorbing core 4 is laid on the inner surface of the bottom plate 11.

[0046] Referring to Figures 2 to 4 , in the embodiment, the plurality of support columns 3 are first installed and fixed to the top plate 21, and then the top cover 2 is assembled with the bottom shell 1. The top plate 21 is provided with a plurality of through holes arranged in a rectangular array, the through hole comprises a countersunk hole 211 and a first connecting hole 212 communicated in turn along the plate thickness direction of the top plate 21, the countersunk hole 211 is arranged towards the outer surface of the top plate 21 and the first connecting hole 212 is arranged towards the inner surface 201 of the top plate 21, the hole diameter of the countersunk hole 211 is larger than that of the first connecting hole 212, and a first internal thread is arranged in the first connecting hole 212.

[0047] The inner surface 201 of the top plate 21 is provided with a liquid collecting protrusion 22 protruding towards the bottom plate 11, the liquid collecting protrusion 22 surrounds the outer periphery of the first connecting hole 212, the liquid collecting protrusion 22 is in the shape of a circular truncated cone, the cross-sectional area of the liquid collecting protrusion 22 gradually decreases with the distance from the inner surface 21, and the circular truncated surface of the liquid collecting protrusion 22 is connected with the inner surface 201.

[0048] Referring to Figures 5 to 7 , the support column 3 comprises a countersunk portion 31, a connecting portion 32 and a column body 33, the column body 33 comprises an upper portion 331 and a lower portion 332 opposite along the axial direction of the column body 33, and the countersunk portion 31, the first connecting portion 32, the upper portion 331 and the lower portion 332 are connected in turn along the axial direction of the column body 33. On the support column 3, the outer diameter of the countersunk portion 31 is the largest, the outer diameter of the first connecting portion 32 is the second largest, and the outer diameter of the column body 33 is the smallest. A first external thread is arranged on the first connecting portion 32.

[0049] The column 33 is hollow to form a liquid return channel 330, the upper portion 331 is provided with a liquid return port 3301, and the lower portion 332 is provided with a liquid outlet port 3302. The liquid return port 3301 is a through hole extending in the radial direction of the column 33, and the liquid outlet port 3302 is a notch communicating in the radial direction of the column 33. The support column 3 further comprises a liquid collecting structure 34 connected to the outer circumferential surface of the upper portion 331. In this embodiment, the liquid collecting structure 34 is provided in the form of a spiral structure surrounding the column 33. The spiral structure comprises a spiral end 349 close to the lower portion 332, and the liquid return port 3301 communicates with the spiral end 349. As shown in Figure 7 , the liquid collecting structure 34 comprises a liquid collecting surface 341 extending in the radial direction of the column 33 and gradually approaching the lower portion 332 to the outer circumferential surface of the column 33 in the direction towards the axis L of the column 33. The liquid return port 3301 communicates between the liquid collecting structure 34 and the liquid return channel 330, and the liquid outlet port 3302 communicates between the liquid return channel 330 and the outer circumferential surface of the lower portion 332. In addition, referring to Figure 5 , the spiral end 349 is provided with a baffle 348 which can block the flow of liquid from the spiral direction to the liquid collecting surface 341, ensuring that the liquid enters the liquid return port 3301.

[0050] Referring to Figures 1 to 7 , the support column 3 is first installed and fixed to the top plate 21, the countersunk head portion 31 is matched with the countersunk head hole 211, and the first connecting portion 32 is threadedly connected with the first connecting hole 212 through the first external thread and the first internal thread. After the bottom shell 1 and the top cover 2 are combined in the thickness direction of the uniform temperature plate, the lower portion 332 of the column 33 abuts against the inner surface of the bottom plate 11, the liquid absorbing core 4 is provided with the avoiding hole 40, the liquid absorbing core 4 is laid on the bottom plate 11, and the column 33 is matched with the avoiding hole 40. At this time, the axial direction of the support column 3 is consistent with the thickness direction of the uniform temperature plate, and at this time, the liquid collecting protrusion 22 surrounds the outer circumferential surface of the support column 3 and is opposite to the liquid collecting surface 341 of the liquid collecting structure 34 in the axial direction.

[0051] In addition, after the assembly of the uniform temperature plate is quickly completed by matching the countersunk head portion 31 with the countersunk head hole 211 and matching the connecting portion 32 with the first connecting hole 212, the radial brazing seal between the countersunk head hole 211 and the countersunk head portion 31 can ensure the sealing of the uniform temperature plate.

[0052] With this arrangement, the liquid working medium 9 on the inner surface 201 of the top plate 21 will gather on the frustoconical surface of the liquid collecting protrusion 22, the liquid working medium on the liquid collecting protrusion 22 will fall on the liquid collecting structure 34 of the support column 3 and then be guided into the liquid return channel 330, and finally be sent out from the liquid outlet port 3302 back to the liquid working medium pool on the bottom plate 11, realizing the separation of gas-liquid circulation in the uniform temperature plate, making the vapor and the condensed liquid have their own flow channels, avoiding the problem of vapor flow carrying condensed liquid, eliminating the phenomenon of gas-liquid counterflow, enhancing the balance of gas-liquid circulation, reducing the thickness of the condensed liquid film, and improving the heat exchange performance.

[0053] In other embodiments, the liquid collection structure is configured as a surrounding structure around the column, with each surrounding structure corresponding to at least one return port.

[0054] Second embodiment of heat spreader

[0055] See Figure 8 and Figure 9 In this embodiment, the heat spreader includes a bottom shell, a top cover, and a support column 8 supporting the bottom plate 5 of the bottom shell and the top plate 6 of the top cover, as well as an additional return column 7. The return column 7 includes a second connecting part 71 and a column body 72. The column body 72 includes an upper part 721 and a lower part 722 that are opposite each other along its own axial direction. The second connecting part 71, the lower part 722, and the upper part 721 are connected sequentially along the axial direction of the column body 72. The second connecting part 71 is provided with a second external thread.

[0056] The column 72 is hollow to form a return channel 720. The upper part 721 has a return port 7201 at its axial end and a liquid outlet 7202 at its lower part 722. The liquid outlet 7202 is a through hole that penetrates the cylinder wall of the column 72 radially. The outer axial part of the return column 7, the return port 7201, the return channel 720, the liquid outlet 7202 and the outer periphery of the lower part 722 are connected in sequence.

[0057] See Figure 10 and combined Figure 8 The bottom plate 5 of the bottom shell is provided with an array of second connecting holes 51 and third connecting holes 52 spaced apart from each other. The diameter of the third connecting hole 52 is larger than that of the second connecting hole 51. The third connecting hole 52 is used for threaded connection with the support column 8, while the second connecting hole 51 is used for threaded connection with the return liquid column 7. Specifically, the second connecting hole 51 is provided with a second internal thread, and the second connecting hole 51 and the second connecting part 71 are threadedly connected through the second external thread and the second internal thread. After the return liquid column 7 is installed on the bottom plate 5, the axial direction of the return liquid column 7 is consistent with the thickness direction of the heat exchange plate.

[0058] Combined Figure 11 The inner surface 601 of the top plate 6 is provided with a liquid collecting protrusion 622 protruding towards the bottom plate 5. As the height of the protrusion increases, the cross-sectional area of ​​the liquid collecting protrusion 622 gradually decreases to its peak 6221. In this embodiment, the liquid collecting protrusion 622 is conical, and its peak 6221 is the conical part of the cone. The number and position of the liquid collecting protrusions 622 provided on the top plate 6 correspond to the number and position of the return liquid columns 7 provided.

[0059] See Figure 9The axial end of the column body 72 is spaced apart from the liquid collecting protrusion 622, and the peak 6221 is axially opposite the liquid return port 7201. In this arrangement, the liquid working medium on the inner surface 601 of the top plate 6 will gather on the surface of the liquid collecting protrusion 622, and the liquid working medium collected by the liquid collecting protrusion 622 will drip into the liquid return port 7201 and finally flow out of the liquid outlet 7202 back to the bottom plate 5. This also achieves separation of the gas-liquid circulation inside the vapor chamber, and improves the heat exchange performance.

[0060] In other embodiments, the surface of the liquid collecting protrusion is curved.

[0061] In other embodiments, the liquid collecting protrusion is frustoconical.

[0062] The electronic device of the present application includes a vapor chamber, and the vapor chamber is the vapor chamber of the first or second embodiment described above.

[0063] Finally, it should be emphasized that the above description is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A support column, comprising a column body, said column body including an upper part and a lower part opposite to each other along its own axial direction; Its features are: It also includes a liquid collection structure connected to the outer peripheral surface of the upper part; The column is hollow to form a return channel. A return port is provided at the upper part, and an outlet is provided at the lower part. The return port is connected between the liquid collection structure and the return channel, and the outlet is connected between the return channel and the outer periphery of the lower part.

2. The support column according to claim 1, characterized in that: The liquid collection structure is configured as a spiral structure surrounding the column, the spiral structure including a spiral end near the lower part, and the liquid return port is connected to the spiral end.

3. The support column according to claim 2, characterized in that: A baffle is provided at the end of the spiral.

4. The support column according to claim 2, characterized in that: The spiral structure includes a liquid collecting surface that extends gradually toward the lower part of the column and toward the outer circumference of the column along the radial direction of the column and toward the axis of the column.

5. The support column according to any one of claims 1 to 4, characterized in that: It also includes a countersunk head and a first connecting part, wherein the countersunk head, the first connecting part and the upper part are connected sequentially along the axial direction, and the first connecting part is provided with a first external thread.

6. A temperature equalization plate, comprising a top plate and a bottom plate disposed opposite to each other, and a support column supporting the top plate and the bottom plate; Its features are: The support column is the support column described in any one of claims 1 to 4 above; The inner surface of the top plate is provided with a liquid collecting protrusion that protrudes toward the bottom plate. The liquid collecting protrusion surrounds the outer periphery of the support column and is opposite to the liquid collecting structure along the axial direction.

7. The temperature distribution plate according to claim 6, characterized in that: The support column further includes a countersunk head and a first connecting part, wherein the countersunk head, the first connecting part and the upper part are connected sequentially along the axial direction; The top plate is provided with countersunk holes and a first connecting hole that are connected sequentially along its own thickness direction. The countersunk head mates with the countersunk hole, and the first connecting part is threadedly connected to the first connecting hole.

8. The temperature distribution plate according to claim 7, characterized in that: The countersunk head is welded and sealed to the countersunk hole.

9. The temperature distribution plate according to any one of claims 6 to 8, characterized in that: It also includes a liquid-absorbing core, which is provided with a clearance hole. The liquid-absorbing core is laid on the base plate, and the lower part cooperates with the clearance hole.

10. A return column, characterized in that: The device includes a column, which comprises an upper part and a lower part that are opposite each other along its own axial direction. The column is hollow to form a return channel. The axial end of the upper part is provided with a return port, and the lower part is provided with a liquid outlet. The return port, the return channel, the liquid outlet, and the outer periphery of the lower part are connected in sequence.

11. A temperature equalization plate, comprising a top plate and a bottom plate disposed opposite to each other, and a support column supporting the top plate and the bottom plate; Its features are: The inner surface of the top plate is provided with a liquid collecting protrusion that protrudes toward the bottom plate. As the height of the protrusion increases, the cross-sectional area of ​​the liquid collecting protrusion gradually decreases to its peak. It also includes the return liquid column as described in claim 10, wherein the return liquid column is fixedly connected to the bottom plate, and a gap is formed between the axial end and the liquid collecting protrusion; The peak is directly opposite the return port along the axial direction.

12. The temperature distribution plate according to claim 11, characterized in that: The return column further includes a second connecting part, which is connected to the lower part along the axial direction. The base plate is provided with a second connecting hole, and the second connecting part is threadedly connected to the second connecting hole.

13. An electronic device, comprising a heat spreader, wherein the heat spreader is the heat spreader described in any one of claims 6 to 9 or 11 to 12.

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