LIQUID-COOLING HEAT-DISSIPATING MODULE WITH EMBEDDED THREE-DIMENSIONAL VAPOR CHAMBER DEVICE

A liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device comprises a three-dimensional vapor chamber device and a semi-open case. The three-dimensional vapor chamber device comprises an upper cover having a base plate and a tube, a bottom cover and a porous wick structure. The base plate has a base cavity and an opening hole. The tube is configured on an upper outer surface, located above the opening hole and extended outwardly. An airtight cavity is formed from a tubular cavity of the tube and the base cavity when the bottom cover is sealed to the upper cover. The porous wick structure is formed continuously on a tubular internal surface, an upper internal surface and a bottom internal surface. The semi-open case has an inlet and an outlet, and is coupled to the bottom cover to form a heat-exchanging chamber. The inlet and outlet are connected to the heat-exchanging chamber.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a liquid-cooling heat-dissipating module, and more particularly, to a liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device.

2. Description of the Prior Art

With the rapid changes in technology, various high-performance electronic products are designed and developed for widely used to meet the needs of modern people's daily life as well as commercial and industrial development. Currently, the rapid development of semiconductor chips for data center servers and in-vehicle autonomous driving artificial intelligence has led to the development of chips with higher computing power and higher density. This means the heat and power consumption of electronic chips per unit volume or unit area will increase dramatically. The traditional air-cooling forced convection technology will not be able to meet the heat dissipation needs of some integrated circuit (IC) electronic components, and water-cooling heat dissipation technology will become the mainstream solution for heat dissipation with high heat flux.

A water-cooling device in the field of water-cooling heat dissipation technology of the prior art is contacted with a heating electronic components through a water-cooling plate metal case of the heat-exchanging chamber in the water-cooling device. Moreover, the water-cooling device can increase the area of heat dissipation through the micro-channel structure disposed in water-cooling plate metal case. The heating electronic component transfers heat to the micro-channel structure through the water-cooling plate metal case through heat conduction, and heat exchange with the water stream to indirectly carry away the heat power consumption of the electronic components. In addition, the water-cooling device of the prior art mainly transfers high energy density heat to the micro-channel in the heat-exchanging chamber through an aluminum metal case or a copper metal case by heat conduction, and then exchanges heat with the cold liquid fluid in the heat-exchanging chamber. As the power for the chip with high-intensity computing is increasing, the demand for heat dissipation continues to increase, and the demand for water-cooling device that reduce the thermal resistance of heat conduction paths is expected to be urgent in the industry. Under the aforementioned conditions, more efficient heat dissipator technology with water-cooling is needed to solve the problem of cooling and heat dissipation for chips with high performance.

SUMMARY OF THE INVENTION

Therefore, the present invention provides a liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device to solve the problems of the prior art.

The present invention provides a liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device, comprising a three-dimensional vapor chamber device and a semi-open case. The three-dimensional vapor chamber device comprises an upper cover, a bottom cover, a porous wick structure and a working fluid. The upper cover has a base plate and a tube. The base plate has a base cavity, an opening hole, an upper outer surface and an upper inner surface. The tube has a tubular cavity and a tubular internal surface. The tube is configured on the upper outer surface, located above the opening hole and extended outwardly. The bottom cover corresponding to the upper cover has a bottom internal surface and a bottom outer surface. An airtight cavity is formed from the base cavity and the tubular cavity when the bottom cover is sealed to the upper cover. The bottom outer surface of the bottom cover is configured to be contacted with a heat source. The porous wick structure is continuously disposed on the tubular internal surface, the upper internal surface and the bottom internal surface. The working fluid is configured in the airtight cavity, and the pressure of the airtight cavity is less than 1 atm. The semi-open case has an inlet and an outlet. The semi-open case is coupled to the bottom cover of the three-dimensional vapor chamber device to form a heat-exchanging chamber. The inlet and the outlet are connected to the heat-exchanging chamber.

Wherein, the tube further has a top end having a sealed structure, the sealed structure is formed by pre-setting a liquid injection port at the top end, and injecting the working fluid into the airtight cavity through the liquid injection port, and then sealing the liquid injection port.

Wherein, a cold liquid fluid is configured in the heat-exchanging chamber, the inlet and the outlet, and the cold liquid fluid is selected from the group consisting of water, acetone, ammonia, methanol, tetrachloroethane, and hydrofluorocarbon chemical refrigerants.

Wherein, the bottom cover has a plurality of grooves, and a groove rib is formed between the grooves, the groove rib has a rib surface, and each of the grooves has a groove internal surface and a groove cavity.

Wherein, the porous wick structure is continuously disposed on the upper internal surface, the bottom internal surface, the tubular internal surface, the rib surface of the groove rib and the groove internal surfaces.

Wherein, the three-dimensional vapor chamber device further comprises a plurality of heat dissipation fins, the tube further comprises a condenser area, and the heat dissipation fins are coupled to the condenser area of the tube.

Wherein, the porous wick structure is disposed by pre-laying a copper-containing powder on the upper internal surface, the bottom internal surface and the tubular internal surface, and after the heat dissipation fins are disposed on the condenser area of the tube, the porous wick structure is continuously disposed on the tubular internal surface, the upper internal surface and the bottom internal surface and the heat dissipation fins are coupled to the condenser area simultaneously by the same sintering process.

Wherein, the three-dimensional vapor chamber device further comprises a plurality of support columns disposed between the upper internal surface of the base plate and the bottom internal surface of the bottom cover, each of the support columns has a column surface, and the porous wick structure continuously disposed on the upper internal surface, the bottom internal surface, the tubular internal surface and the column surface.

Wherein, the bottom cover further comprises a bottom groove configured to accommodate a circuit board with a chip, a chip surface of the chip is contacted with a bottom groove surface of the bottom groove.

The present invention provides another liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device, comprising a three-dimensional vapor chamber device and a semi-open case. The three-dimensional vapor chamber device comprises a plurality of upper covers, a bottom cover, a porous wick structure and a working fluid. Each of the upper covers comprises a base plate and a tube. The base plate has a base cavity, an opening hole, an upper outer surface and an upper internal surface. The tube has a tubular cavity and a tubular internal surface. The tube is configured on the upper outer surface and located above the opening hole and extended outwardly from the upper outer surface. The bottom cover has a bottom internal surface and a bottom outer surface. An airtight cavity is formed from the tubular cavity of the each upper covers and the base cavity when the bottom cover is sealed to the upper covers, and the bottom outer surface of the bottom cover is configured to be contacted with a heat source. The porous wick structure is continuously disposed on the tubular internal surface of the each upper covers, the upper internal surface and the corresponding bottom internal surface. The working fluid is configured in the corresponding airtight cavity, and the pressure of the airtight cavity is less than 1 atm. The semi-open case has an inlet and an outlet. The semi-open case is coupled to the bottom cover of the three-dimensional vapor chamber device to form a heat-exchanging chamber. The inlet and the outlet are connected to the heat-exchanging chamber.

Wherein, the tube further has a top end having a sealed structure, the sealed structure is formed by pre-setting a liquid injection port at the top end, and injecting the working fluid into the airtight cavity through the liquid injection port, and then sealing the liquid injection port.

Wherein, a cold liquid fluid is configured in the heat-exchanging chamber, the inlet and the outlet and the cold liquid fluid is selected from the group consisting of water, acetone, ammonia, methanol, tetrachloroethane, and hydrofluorocarbon chemical refrigerants.

In summary, the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention can exchange the high-density heat generated by high-power chips through the condenser area of the three-dimensional vapor chamber device with two-phase flow circulation to enhance the heat dissipation efficiency. Moreover, the plurality of grooves of the bottom cover in the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention can reduce the thermal resistance of heat conduction from the heat source to the porous wick structure disposed on the bottom internal surface by reducing the heat conduction distance between the porous wick structure disposed on the bottom cover and the heat source, while taking into account the structural strength of the bottom cover, so as to enhance the heat conduction efficiency. Furthermore, the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention can increase the contact area between the condenser area and the cold liquid fluid through the heat dissipation fins disposed on the tube to enhance the heat dissipation efficiency; and increase the heat exchange efficiency with the cold liquid fluid in the heat-exchanging chamber through the flow disturbance structure disposed on the heat dissipation fins generates mixed flow in the heat-exchanging chamber, so as to increase the heat dissipation efficiency. In addition, in the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention, the plurality of upper covers of the three-dimensional vapor chamber device can be coupled with the same bottom cover to be contacted with the plurality of heat sources or the same heat source, and dissipate heat in the same heat exchanger, so as to enhance the whole heat dissipation efficiency of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

For the sake of the advantages, spirits and features of the present invention can be understood more easily and clearly, the detailed descriptions and discussions will be made later by way of the embodiments and with reference of the diagrams. It is worth noting that these embodiments are merely representative embodiments of the present invention, wherein the specific methods, devices, conditions, materials and the like are not limited to the embodiments of the present invention or corresponding embodiments. Moreover, the devices in the figures are only used to express their corresponding positions and are not drawing according to their actual proportion.

In the description of the presentation, the description with reference to the terms “an embodiment”, “another embodiment” or “part of an embodiment” means that a particular feature, structure, material or characteristic described in connection with the embodiment including in at least one embodiment of the present invention. In the presentation, the schematic representations of the above terms do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in one or more embodiments. Furthermore, the indefinite articles “a” and “an” preceding a device or element of the present invention are not limiting on the quantitative requirement (the number of occurrences) of the device or element. Thus, “a” should be read to include one or at least one, and a device or element in the singular also comprises the plural unless the number clearly refers to the singular.

Please refer toFIG.1andFIG.2.FIG.1is a cross-sectional diagram illustrating a liquid-cooling heat-dissipating module A with embedded three-dimensional vapor chamber device according to an embodiment of the present invention.FIG.2is a cross-sectional diagram illustrating a three-dimensional vapor chamber device10inFIG.1. As shown inFIG.1andFIG.2, in the present embodiment, the liquid-cooling heat-dissipating module A with embedded three-dimensional vapor chamber device comprises a three-dimensional vapor chamber device10and a semi-open case20. The three-dimensional vapor chamber device10comprises an upper cover12, a bottom cover14, a porous wick structure16and a working fluid (not shown). The upper cover12has a base plate121and a tube122. The base plate121has a base cavity1211, an opening hole1212, an upper outer surface1213and an upper inner surface1214. The tube122has a tubular cavity1221and a tubular internal surface1222. The tube122is configured on the upper outer surface1213, located above the opening hole1212and extended outwardly from the upper outer surface1213. The bottom cover14corresponding to the upper cover12has a bottom internal surface141and a bottom outer surface142. An airtight cavity15is formed from the base cavity1211and the tubular cavity1221when the bottom cover14is sealed to the upper cover12. Wherein, the upper cover12can be fixedly connected to the bottom cover14by gluing, by gluing, welding, etc. The working fluid is configured in the airtight cavity15, and the pressure of the airtight cavity15is less than 1 atm.

As shown inFIG.1, in the present embodiment, the semi-open case20has an inlet22and an outlet24. The semi-open case20is coupled to the bottom cover14of the three-dimensional vapor chamber device10to form a heat-exchanging chamber30. The inlet22and the outlet24are connected to the heat-exchanging chamber30. In practice, the inlet22and outlet24of the semi-open case20are configured opposite at the ends of the semi-open case20. In an embodiment, the inlet22and the outlet24can also be configured on the same side of the semi-open case20. Furthermore, the liquid-cooling heat-dissipating module A with embedded three-dimensional vapor chamber device in the present embodiment can be connected to the bottom internal surface141of the bottom cover14of the three-dimensional vapor chamber device10through the joint end26of the semi-open case20, and fastened to the bottom cover14with screws28. It is also possible to use stirring and friction welding to couple the semi-open case20to the three-dimensional vapor chamber device10to form a heat-exchanging chamber30, but in practice, the way in which the semi-open case20be coupled to the three-dimensional vapor chamber device10is not limited to the aforementioned.

In addition, in practice, the cold liquid fluid (not shown) is configured in the heat-exchanging chamber30, the inlet22and the outlet24. When the liquid-cooling heat-dissipating module A with embedded three-dimensional vapor chamber device is operating, the cold liquid fluid can flow from the inlet22to the heat-exchanging chamber30and then flow to the outlet24(as shown by the arrow inFIG.1). In practice, the cold liquid fluid can be water, acetone, ammonia, methanol, tetrachloroethane, and hydrofluorocarbon chemical refrigerants, but is not limited to the above-mentioned, the cold liquid fluid can also be other fluids that absorb heat and carry away heat energy.

As shown inFIG.2, in the present embodiment, the bottom cover14of the three-dimensional vapor chamber device10has a plurality of grooves143, and a groove rib144is formed between the grooves143. The groove rib144has a rib surface1441, and each of the grooves143has a groove internal surface1431and a groove cavity1432. The airtight cavity15is formed from the base cavity1211, the tubular cavity1221and the groove cavity1432when the bottom cover14is sealed to the upper cover12. It is worth noting that in the present embodiment, the shape of the grooves143of the bottom cover14is square, but it is not limited in practice. The shape and number of the grooves143can be designed according to the requirements. Furthermore, the porous wick structure16is continuously disposed on the upper internal surface1214, the bottom internal surface141, the tubular internal surface1222, the rib surface1441of the groove rib144and the groove internal surfaces1431. The bottom outer surface142of the bottom cover14is configured to be contacted with a heat source (not shown). Wherein, the heat source can be a chip or chip packaging case of electronic product.

Furthermore, in the present embodiment, the plurality of grooves143of the bottom cover14in the liquid-cooling heat-dissipating module A with embedded three-dimensional vapor chamber device can reduce the thermal resistance of heat conduction from the heat source to the bottom14by reducing the heat conduction distance between the porous wick structure16disposed on the bottom cover14and the heat source. Since the three-dimensional vapor chamber device10has a complete and continuous porous wick structure16, the working fluid in the porous wick structure16of a condenser area1223of the tube122can smoothly and quickly return to an evaporator area of the bottom cover14to make the two-phase flow circulation smooth and further enhance the heat dissipation efficiency.

In another embodiment, the tube122further has a top end1220having a sealed structure13, and the sealed structure13is formed by pre-setting a liquid injection port131at the top end1220, injecting the working fluid into the airtight cavity15through the liquid injection port131, and then sealing the liquid injection port131. In practice, the liquid injection port131can be sealed by welding, etc. Furthermore, the liquid injection port131and the sealed structure13of the three-dimensional vapor chamber device10in the present invention are located at the top end1220of the tube122, but it is not limited in practice, the liquid injection port131and the sealed structure13can be set at any position on the upper cover12instead of the top end1220(as shown inFIG.3).

Please refer toFIG.3andFIG.4.FIG.3is a cross-sectional diagram illustrating a three-dimensional vapor chamber device10with a plurality of heat dissipation fins40disposed on the outer surface1224of the tube122inFIG.2.FIG.4is a structural schematic diagram illustrating a heat dissipation fin40inFIG.3. As shown inFIG.3andFIG.4, in the present embodiment, the three-dimensional vapor chamber device10comprises a plurality of heat dissipation fins40disposed on the tube122, and the tube122has the condenser area1223. The heat dissipation fins40are coupled to the condenser area1223of the tube122. The heat dissipation fins40have a hole41and a protruding structure42. The diameter of the hole41can be slightly smaller than the diameter of the tube122, so the heat dissipation fins40can be disposed on the condenser area1223of the tube122through the hole41. The protruding structure42is positioned around the edges of the hole41. As shown inFIG.3, when the plurality of heat dissipation fins40are disposed on the tube122, the protruding structure42of the upper heat dissipation fins40can hold the lower heat dissipation fins40, so the plurality of heat dissipation fins40can be arranged at a certain spacing. When the heat energy in the gaseous working fluid is transferred to the tube122, the heat energy can be transferred from the outer surface1224of the tube122to the heat dissipation fins40for heat dissipation. In practice, the number of the heat dissipation fins40and the length of the protruding structure42can be designed according to the requirements. The heat dissipation fins40disposed on the tube122of the present embodiment can increase the contact area between the condenser area1223and the cold liquid fluid to improve the heat dissipation efficiency.

Furthermore, as shown inFIG.4, the heat dissipation fin40has a plurality of flow disturbance structures43. The flow disturbance structure43has a spoiler431and a spoiler opening hole432. Please refer toFIG.1andFIG.3. In practice, when the liquid-cooling heat-dissipating module A with embedded three-dimensional vapor chamber device carries away the heat energy configured on the condenser area1223, the cold liquid fluid input from the inlet22to the heat-exchanging chamber30can generate mixed flow in the heat-exchanging chamber30through the flow disturbance structures43to increase the heat exchange efficiency with the cold liquid fluid in the heat-exchanging chamber30, and further enhance the whole dissipation efficiency. It is worth noting that in the present embodiment, the shape of the spoiler431and the spoiler opening hole432of the flow disturbance structure43on the heat dissipation fin40is triangular, but it is not limited to the aforementioned in practice. In practice, the shape and number of the flow disturbance structure43can be designed according to the requirements.

In the present embodiment, the porous wick structure16is continuously disposed on the tubular internal surface1222, the upper internal surface1214and the bottom internal surface141. In practice, the porous wick structure16is disposed by pre-laying a copper-containing powder on the upper internal surface1214, the bottom internal surface141and the tubular internal surface1222, and after the heat dissipation fins40are disposed on the condenser area1223of the tube122, the porous wick structure16is continuously disposed on the tubular internal surface1222, the upper internal surface1214and the bottom internal surface141and the heat dissipation fins40are coupled to the condenser area1223of the tube122simultaneously by the same sintering process, but it is not limited to the aforementioned in practice. In practice, the porous wick structure16can be formed by sintering copper-containing powder or by drying, cracking and sintering slurry.

As shown inFIG.3, in the present embodiment, the three-dimensional vapor chamber device10further comprises a plurality of support columns50. The support columns50has a top end51and a bottom end52, the support column50can disposed between the upper internal surface1214of the base plate121and the bottom internal surface141of the bottom cover14by welding the top end51and the bottom end52to the upper internal surface1214of the base plate121and the bottom internal surface141of the bottom cover14respectively. In another embodiment, the support column50is disposed between the upper internal surface1214of the base plate121and the bottom internal surface141of the bottom cover14by a 3D printing process. The support column50has a column surface53. The porous wick structure16continuously disposed on the upper internal surface1214, the bottom internal surface141, the tubular internal surface1222and the column surface53. Thus, the porous wick structure16disposed on the column surface53can also assist the working fluid to flow back to the porous wick structure16disposed on the bottom internal surface141of the bottom cover14. Furthermore, when extracting air from the airtight cavity15, the support column50can prevent the bottom cover14from being depressed or deformed due to the lower pressure of the airtight cavity15, so the bottom outer surface142of the bottom cover14can be contacted with the heat source flatly and tightly, which reduces the contact thermal resistance, and further enhances the heat-dissipating efficiency. It is worth noting that the number of the support columns50inFIG.3is only two. In practice, the number of the support columns50can be determined according to the requirements, the length of the support columns50can correspond to the height of the base cavity1211, and the support columns50can be encircled around the opening hole1212of the base plate121.

As shown inFIG.1toFIG.3, when the liquid-cooling heat-dissipating module A with embedded three-dimensional vapor chamber device operates, the bottom outer surface142of the bottom cover14will absorb the heat energy generated by the heat source. At this time, the liquid working fluid in the porous wick structure16of the bottom internal surface141also absorbs the heat energy and converts to gaseous working fluid, and the gaseous working fluid will carry the heat energy to the condenser area1223of the tube122, and exchange heat with the cold liquid fluid in the heat-exchanging chamber30. Further, the cold liquid fluid flowing from the inlet22of the semi-open case20will absorb the heat energy from the condenser area1223. At this time, the gaseous working fluid in the three-dimensional vapor chamber device10is converted to liquid working fluid at the condenser area1223, and the liquid working fluid flows back to the porous wick structure16disposed on the bottom internal surface141of the bottom cover14through the porous wick structure16. Next, the cold liquid fluid with the heat energy flows out from the outlet24of the semi-open case20to carry away the heat energy from the heat source for heat dissipation. Therefore, the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device in the present invention can directly exchange heat with the cold liquid fluid in the heat-exchanging chamber through the condenser area of the three-dimensional vapor chamber device, so as to enhance the heat dissipation efficiency.

Please refer toFIG.5.FIG.5is a cross-sectional diagram illustrating a liquid-cooling heat-dissipating module B with embedded three-dimensional vapor chamber device according to another embodiment of the present invention. In the present embodiment, the bottom cover14′ of the three-dimensional vapor chamber device10′ further comprises a bottom groove145configured to accommodate a circuit board60with a chip62, a chip surface621of the chip62is contacted with a bottom groove surface1451of the bottom groove145. In practice, when the circuit board60does not fit completely and tightly in the bottom groove145of the bottom cover14′, the gap between the circuit board60and the bottom groove145can be filled with thermal gel to make the circuit board60and the bottom groove145fit more tightly and reduce the heat conduction efficiency from the contact thermal resistance. When the liquid-cooling heat-dissipating module B with embedded three-dimensional vapor chamber device operates, the cold liquid fluid can flow from the inlet22′ of the semi-open case20′ to the heat-exchanging chamber30′ and from the heat-exchanging chamber30′ to the outlet24′ of the semi-open case20′ (as shown by the arrow inFIG.5). In addition, in the present embodiment, the groove143′ of the bottom cover14′ and the bottom groove145in the three-dimensional vapor chamber device10′ can reduce the heat conduction distance between the chip62and the porous wick structure16′, and reduce the thermal resistance of the heat energy generated by the chip62during operation to the porous wick structure16′ on the bottom internal surface141′ of the bottom cover14′, so as to enhance the heat conduction efficiency. It should be noted that the liquid-cooling heat-dissipating module B with embedded three-dimensional vapor chamber device of the present embodiment has substantially the same structure and function as the corresponding element of the aforementioned embodiment, so it will not be described again herein.

Please refer toFIG.6.FIG.6is a cross-sectional diagram illustrating a liquid-cooling heat-dissipating module C with embedded three-dimensional vapor chamber device according to another embodiment of the present invention. The liquid-cooling heat-dissipating module C with embedded three-dimensional vapor chamber device of the present embodiment differs from the aforementioned embodiment in that the three-dimensional vapor chamber device10″ and the semi-open case20″ in the present embodiment are coupled by gluing, welding and stirring friction welding to seal the bottom cover14″ of the three-dimensional vapor chamber device10″ to the semi-open case20″. Wherein, the length of the bottom cover14″ of the three-dimensional vapor chamber device10″ can be equal to or slightly smaller than the width of the semi-open case20″, so the semi-open case20″ and three-dimensional vapor chamber device10″ can form the sealed liquid-cooling heat-dissipating module C with embedded three-dimensional vapor chamber device. It should be noted that the liquid-cooling heat-dissipating module C with embedded three-dimensional vapor chamber device of the present embodiment has substantially the same structure and function as the corresponding element of the aforementioned embodiment, so it will not be described again herein. Furthermore, in practice, the length of the bottom cover of the three-dimensional vapor chamber device, the width of the semi-open case, and the coupling method between the three-dimensional vapor chamber device and the semi-open case are not limited to the aforementioned.

The liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention can be not only in the aforementioned form, but also in other forms. Please refer toFIG.7.FIG.7is a cross-sectional diagram illustrating a liquid-cooling heat-dissipating module D with embedded three-dimensional vapor chamber device according to another embodiment of the present invention. In the present embodiment, the liquid-cooling heat-dissipating module D with embedded three-dimensional vapor chamber device comprises a three-dimensional vapor chamber device10′″ and a semi-open case20′″. The three-dimensional vapor chamber device10′″ comprises a plurality of upper covers12′″, a bottom cover14′″, a porous wick structure16′″ and a working fluid (not shown). Each of the upper covers12′″ comprises a base plate121′ and a tube122′″. The base plate121′″ has a base cavity1211′″, an opening hole1212′″, an upper outer surface1213′″ and an upper internal surface1214′″. The tube122′″ has a tubular cavity1221′″ and a tubular internal surface1222′″. The tube122′″ is configured on the upper outer surface1213″ and located above the opening hole1212′″ and extended outwardly from the upper outer surface1213″. The bottom cover14′ has a bottom internal surface141′″ and a bottom outer surface142′″. An airtight cavity15″ is formed from the tubular cavity1221′″ of the each upper covers12′″ and the base cavity1211′″ when the bottom cover14′″ is sealed to the upper covers12′″. The bottom outer surface142′″ of the bottom cover14′″ is configured to be contacted with a heat source. The porous wick structure16′″ is continuously disposed on the tubular internal surface1222′″ of the each upper covers12′″, the upper internal surface1214′″ and the corresponding bottom internal surface141′″. Wherein, the working fluid is configured in the corresponding airtight cavity15′″, and the pressure of the airtight cavity15″ is less than 1 atm.

In the present embodiment, the tube122′″ further has a top end1220′ having a sealed structure13′″, and the sealed structure13′″ is formed by pre-setting a liquid injection port131′ at the top end1220′″, and injecting the working fluid into the airtight cavity15″ through the liquid injection port131′″, and then sealing the liquid injection port131′″. In practice, the liquid injection port131′″ can be sealed by welding, etc. Furthermore, the liquid injection port131′″ and the sealed structure13′″ of the three-dimensional vapor chamber device10′″ in the present invention are located at the top end1220′″ of the tube122′″, but it is not limited in practice, the liquid injection port131′″ and the sealed structure13′″ can be set at any position on the upper cover12′″ instead of the top end1220′. The semi-open case20′″ has an inlet22′″ and an outlet24′″. The semi-open case20′″ is coupled to the bottom cover14′″ to form a heat-exchanging chamber30′″. The inlet22′″ and the outlet24′″ are connected to the heat-exchanging chamber30′″. In practice, a cold liquid fluid is configured in the heat-exchanging chamber30′″, the inlet22′″ and the outlet24′″ and the cold liquid fluid is selected from the group consisting of water, acetone, ammonia, methanol, tetrachloroethane, and hydrofluorocarbon chemical refrigerants, but is not limited to the above-mentioned, the cold liquid fluid can also be other fluids that absorb heat and carry away heat energy.

As shown inFIG.7, the liquid-cooling heat-dissipating module D with embedded three-dimensional vapor chamber device of the present embodiment differs from the aforementioned embodiment in that the three upper covers12′″ of the three-dimensional vapor chamber device10′″ in the present embodiment can be coupled with the same bottom cover14′″, can be contacted with three different heat sources separately or be contacted with the same heat source simultaneously, and exchange heat in the same heat-exchanging chamber30′″. In practice, the three upper covers12′″ of the three-dimensional vapor chamber device10′″ can be arranged in the same heat-exchanging chamber30′″ in parallel and in other ways. Wherein, the upper cover12′″ can be fixedly connected to the bottom cover14′″ by gluing, by gluing, welding, etc.

When the liquid-cooling heat-dissipating module D with embedded three-dimensional vapor chamber device operates, the cold liquid fluid can flow from the inlet22′″ to the heat-exchanging chamber30′″, carry the heat energy from the condenser area1223′″ disposed on the different upper covers12′″ through the different upper covers12′″, and flow from the heat-exchanging chamber30′″ to the outlet24′″ (as shown by the arrow inFIG.7). In practice, the number and arrangement of the upper covers12′″ can be designed according to the requirements. It should be noted that the liquid-cooling heat-dissipating module D with embedded three-dimensional vapor chamber device of the present embodiment has substantially the same structure and function as the corresponding element of the aforementioned embodiment, so it will not be described again herein. Therefore, in the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention, the plurality of upper covers of the three-dimensional vapor chamber device can be coupled with the same bottom cover to be contacted with the plurality of heat sources or the same heat source, and dissipate heat in the same heat exchanger, so as to enhance the whole heat dissipation efficiency of the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device.

In summary, the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention can exchange the high-density heat generated by high-power chips through the condenser area of the three-dimensional vapor chamber device with two-phase flow circulation to enhance the heat dissipation efficiency. Moreover, the plurality of grooves of the bottom cover in the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention can reduce the thermal resistance of heat conduction from the heat source to the porous wick structure disposed on the bottom internal surface by reducing the heat conduction distance between the porous wick structure disposed on the bottom cover and the heat source, while taking into account the structural strength of the bottom cover, so as to enhance the heat conduction efficiency. Furthermore, the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention can increase the contact area between the condenser area and the cold liquid fluid through the heat dissipation fins disposed on the tube to enhance the heat dissipation efficiency; and increase the heat exchange efficiency with the cold liquid fluid in the heat-exchanging chamber through the flow disturbance structure disposed on the heat dissipation fins generates mixed flow in the heat-exchanging chamber, so as to increase the heat dissipation efficiency. In addition, in the liquid-cooling heat-dissipating module with embedded three-dimensional vapor chamber device of the present invention, the plurality of upper covers of the three-dimensional vapor chamber device can be coupled with the same bottom cover to be contacted with the plurality of heat sources or the same heat source, and dissipate heat in the same heat exchanger, so as to enhance the whole heat dissipation efficiency of the present invention.

With the examples and explanations mentioned above, the features and spirits of the invention are hopefully well described. More importantly, the present invention is not limited to the embodiment described herein. Those skilled in the art will readily observe that numerous modifications and alterations of the device may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.