TWI761086B - Liquid cooling module and its liquid cooling head - Google Patents

Abstract

A liquid cooling head includes a casing, an inlet channel, a heat-dissipation structure, a liquid collection structure, a drainage channel and a pump set. The casing includes an upper chamber and a lower chamber. The upper chamber is communication with the lower chamber through an connection opening. The inlet channel is located on one side of the casing and connected to the upper chamber for feeding working fluid into the upper chamber. The heat-dissipation structure is located in the lower chamber to remove the heat of the working fluid. The liquid collecting structure is located in the lower chamber to collect the working fluid passing through the heat-dissipation structure. The drainage channel is located on one side of the casing and connected to the lower chamber. The pump set is used to discharge the working fluid outwardly from the lower chamber via the drainage channel.

Description

Liquid cooling module and its liquid cooling head

The present invention relates to a heat dissipation module, in particular to a liquid cooling module and its liquid cooling head.

With the advancement and popularization of technology, various electronic devices or computer equipment have long been indispensable in people's daily life, such as notebook computers, desktop computers, and network servers. Generally speaking, the internal electronic components of these products will increase the temperature during operation, and the high temperature can easily cause damage to the components. Therefore, the heat dissipation mechanism is a very important and necessary design for these electronic products. In general heat dissipation design, in addition to using fans to provide airflow for convection cooling, or attaching heat dissipation units with special materials to generate conduction cooling, water-cooling mechanisms are also an effective and common heat dissipation design.

The principle of water-cooled heat dissipation is simple, generally using liquid (such as water or coolant) as the heat dissipation medium, and using a continuously operating water pump or pump to form a continuous circulation in the applied system. Liquids flow in closed conduits, and these conduits are distributed over the surfaces of the various electronic components in the system, such as the central processing unit. As the relatively cold liquid flows through these relatively hot electronic components, it absorbs its heat to slow its temperature rise. Then, the heat is released by the pipeline to the outside world or other heat dissipation mechanisms to reduce the temperature of the liquid, and then the liquid is returned to the system for circulation and heat dissipation.

However, due to the limited internal space of general computer equipment, host or server equipment, it can only be used with the space of the set environment, and the water-cooled heat dissipation must have the design of the inflow and outflow of the pipeline, so that the installation of the pipeline will be relatively complicated. Therefore, how to design a water-cooled heat dissipation structure with good heat dissipation effect, which can take into account the overall pipeline configuration, reduce the occupied space to facilitate installation in a small environment, and effectively complete the connection with other pipelines and avoid water leakage, it is easy. The main purpose of the development of this case.

One objective of the present invention is to provide a liquid cooling module and a liquid cooling head thereof to solve the above-mentioned difficulties in the prior art.

An embodiment of the present invention provides a liquid cooling head. The liquid cooling head includes a casing, a first water inlet channel, a heat transfer structure, a water collecting structure, a drainage channel and a pump group. The casing includes a shell, a baffle and a base. The casing, the baffle and the base are sequentially combined into one. An upper chamber is formed between the casing and the baffle. A lower chamber is formed between the baffle and the base. The communication opening is located on the baffle and connects the upper chamber and the lower chamber stacked on each other. The first water inlet channel is located on one side of the casing and is connected to the upper chamber for feeding a working fluid from a source into the upper chamber. The heat transfer structure is located in the lower chamber and is sandwiched between the baffle plate and the base to take away the heat energy of the working fluid. The water collecting structure is located in the lower chamber for collecting the working fluid passing through the heat transfer structure. A drain channel is located on one side of the housing and connects to the lower chamber. The pump group is used for discharging the working fluid in the lower chamber to the drainage channel.

According to one or more embodiments of the present invention, the above-mentioned liquid cooling head further includes a second water inlet channel. The second water inlet channel is located on the other side of the casing and is connected to the upper chamber for feeding the working fluid from another source into the upper chamber. The first water inlet channel and the second water inlet channel are respectively located on the housing opposite to each other.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling head, the first water inlet channel and the drainage channel are located on the same side of the casing, or the first water inlet channel and the drainage channel are located on the casing opposite to each other.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling head, the baffle plate further has at least one communication gap. The communication gap is located between the communication opening and the first water inlet channel, and connects the upper chamber and the lower chamber.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling head, the heat transfer structure includes a plurality of fins juxtaposed with each other. The base has a first guide structure and a second guide structure. The fins, the water collecting structure, the first diversion structure and the second diversion structure are all formed on the inner surface of a base of the base facing the casing. The first flow guide structure and the second flow guide structure are located on the same side of the heat transfer structure for guiding the working fluid passing through the fins to the water collecting structure respectively. The water collecting structure is located between the first diversion structure and the second diversion structure.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling head, the water collecting structure includes a disc body and three flow channels. The disc body is located on the inner surface of the base of the base. The flow channels are mutually formed on a disk surface of the disk body facing the casing for respectively receiving the working fluid sent from the fins, the first flow guide structure and the second flow guide structure.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling head, the pump group includes a driving assembly and a fan blade assembly. The drive assembly can rotate the fan blade assembly without contact. The fan blade assembly includes a fan blade and a shaft rod passing through the fan blade, the water collecting structure includes a shaft rod fixing piece, and the casing includes a baffle. The shaft rod holder is located at the intersection of these runners. The baffle is clamped to the disc body and the fan blade, and covers these flow channels. The blocking plate has an opening, and the shaft rod passes through the blocking sheet and is arranged on the shaft rod fixing member. Two opposite surfaces of the casing respectively have an upper groove and a lower groove. The lower groove is vertically aligned with the upper groove, and is airtightly isolated from the upper groove. The upper groove accommodates the drive assembly, and the lower groove accommodates the fan blade assembly. The fan blade assembly is pivotally located in the shaft rod fixing member and the lower groove.

According to one or more embodiments of the present invention, the above-mentioned liquid cooling head further includes two external channels and a pipeline. These external channels are located on two opposite sides of the housing. Lines are located in the upper chamber, connect these external channels, and are hermetically isolated from the chamber.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling head, the baffle plate has a groove, and the casing further includes a pipe cover, and the pipe cover covers the groove to form the pipeline.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling head, the housing includes a positioning groove. The positioning groove is located in the upper chamber and is recessed on the inner surface of the casing facing the baffle plate. The casing further includes a positioning rib, the positioning rib is integrally formed and connected to the outer surface of the tube cover, and extends into and abuts into the positioning groove for positioning the tube cover.

An embodiment of the present invention provides a liquid cooling module. The liquid cooling module includes the above-mentioned liquid cooling head, a tower type liquid cooling discharge device, a front pipeline and a rear pipeline. The tower type liquid cooling device includes an upper box body, a lower box body and a heat dissipation laminated structure. The upper box body includes a water inlet, a water outlet, and a plurality of mutually isolated first chambers. One of the first chambers is connected to the water inlet, and the other first chamber is connected to the water outlet. The lower case is vertically stacked on top of the liquid cooling head, and includes a plurality of second chambers isolated from each other. The heat dissipation laminated structure includes a plurality of heat dissipation fin groups and a plurality of fin tube layers. The heat dissipation fin groups and the fin tubes are located between the upper case and the lower case. The fin tubes are parallel to each other and located between any two adjacent sets of radiating fins. The fin tubes are respectively connected to the first chamber and the second chamber, so that an S-shaped path is formed in the upper case, the heat dissipation stack structure and the lower case. The front pipeline is connected to the water inlet and the drainage channel of the liquid cooling head. The rear pipeline is connected to the water outlet and the first water inlet channel of the liquid cooling head.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling module, the tower-type liquid cooling exhaust device further includes an external fan. The external fan is located on one side of the heat dissipation stack structure, and is fixed between the upper case body and the lower case body, and is used for outputting air flow toward the heat dissipation fin group.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling module, the external fan and the first water inlet channel of the liquid cooling head are both located on the same side of the liquid cooling module.

According to one or more embodiments of the present invention, in the above-mentioned liquid cooling module, a side surface of the casing corresponding to the side of the first water inlet channel has a sloping plate that expands obliquely outward.

In this way, through the structures of the above embodiments, the present invention can not only achieve good heat dissipation effect, but also be beneficial to be applied to related computer equipment, host or server equipment.

The above descriptions are only used to describe the problems to be solved by the present invention, the technical means for solving the problems, and their effects, etc. The specific details of the present invention will be described in detail in the following embodiments and related drawings.

Several embodiments of the present invention will be disclosed in the drawings below, and for the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in the embodiments of the present invention, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some well-known structures and elements will be shown in a simple and schematic manner in the drawings.

The implementation of the liquid cooling head 2 proposed by the present invention will now be described with an embodiment. See Figures 1A to 4B. 1A and 2B are three-dimensional schematic diagrams of the liquid cooling head 2; Figure 1C is a schematic diagram of the components of the liquid cooling head 2 being exploded; Figures 2B to 2D are schematic diagrams of changes of different baffles; Figures 3A to 3D are schematic diagrams of the flow direction of the working fluid in the liquid cooling head 2; Figures 4A and 4B are a base 30 and a set A schematic diagram of the arrangement of the water structure 31 .

As shown in FIGS. 1A to 1C , the liquid cooling head 2 of the present invention mainly includes a casing 10 , a pump group 26 , a first water inlet channel 21 , a second water inlet channel 22 and a drain Channel 23. The pump group 26 includes a driving assembly 260 and a fan blade assembly 261 . The casing 10 includes an upper cover 200 , a casing 20 , a baffle 35 and a base 30 . The upper cover 200 , the casing 20 , the baffle 35 and the base 30 are sequentially combined with each other as a whole. An upper chamber (eg, the water storage chamber 201 ) is formed between the casing 10 and the baffle 35 . A lower chamber 301 is formed between the baffle 35 and the base 30 . The upper chamber (eg, the water storage chamber 201 ) and the lower chamber 301 are stacked on each other. Two opposite surfaces of the casing 20 respectively have an upper groove 28 and a lower groove 29 . The upper groove 28 is used to accommodate the drive assembly 260. The lower groove 29 is vertically aligned with the upper groove 28 and is airtightly isolated from the upper groove 28 . The lower groove 29 is used to accommodate the fan blade assembly 261 . The driving assembly 260 can rotate the fan blade assembly 261 in a non-contact manner. For example, the driving assembly 260 can rotate the fan blade assembly 261 in a non-contact geomagnetic induction.

The casing 20 is used as the main structural part of the liquid cooling head 2. One end of the casing 20 is provided with the first water inlet channel 21 for feeding the working fluid from a source, and the other end is provided with the second water inlet channel 22 and the The drainage channel 23, in other words, the second water inlet channel 22 and the drainage channel 23 are located on the same side of the casing 20, and are located on the casing 20 opposite to the first water inlet channel 21 respectively. to feed the working fluid from another source. The housing 20 also has an electromechanical chamber to accommodate the drive assembly 260. The liquid cooling head 2 also includes a single-hole locking ring 24 and a double-hole locking ring 25 with a specific thickness. The single-hole locking ring 24 is used for locking the first water inlet channel 21, and the double-hole locking ring 24 is used for locking the first water inlet channel 21. The hole locking ring 25 is used for locking the second water inlet channel 22 and the drain channel 23 to prevent water leakage at the joint of these channels.

The casing 20 is disposed between the upper cover 200 and the base 30 , and the baffle 35 is disposed between the casing 20 and the base 30 . The water collecting structure 31 , a first diversion structure 32 , a second diversion structure 33 and a heat transfer structure 34 are disposed on the inner surface 30A of the base 30 facing the casing 20 . The heat transfer structure 34 It includes a plurality of fins 341 juxtaposed with each other. The water collecting structure 31 is located between the first diversion structure 32 and the second diversion structure 33 , and the water collecting structure 31 , the first diversion structure 32 and the second diversion structure 33 are connected to the heat transfer structure Structure 34 or the same side adjacent to the heat transfer structure 34 . Both the first guide structure 32 and the second guide structure 33 are formed on the inner surface 30A of the base of the base 30 . In addition, the casing 20 of the casing 10 further includes a blocking piece 27 . The baffle 27 is located between the fan blade assembly 261 and the water collecting structure 31 , and can assist the water collecting structure 31 to collect water to prevent the backflow of the working fluid. The blocking plate 27 has an opening 270 . The blocking piece 27 is, for example, a copper piece, but the present invention is not limited thereto.

As shown in FIG. 1C and FIG. 2A , after the baffle 35 is assembled to the casing 20 , the upper chamber is, for example, a water storage chamber 201 formed between the casing 20 and the baffle 35 for Provides temporary storage of working fluids. The baffle 35 is simultaneously disposed above the heat transfer structure 34 and separates the upper water storage chamber 201 and the lower chamber 301 accommodated by the heat transfer structure 34 (see FIGS. 3A to 3C ). The baffle 35 also has a communication opening 350 , and the communication opening 350 communicates with the water storage chamber 201 of the upper layer and the lower chamber 301 of the lower layer. In this way, after the working fluid flows into the water storage chamber 201 from the first water inlet channel 21 or the second water inlet channel 22 , the working fluid can then flow down into the lower chamber 301 through the communication opening 350 .

However, the concept of the present invention is not limited to this, that is, other designs can also be made for the relevant communication structure of the baffle 35 . For example, three different baffles B35, C35, D35 are illustrated in Figures 2B to 2D, wherein the baffle B35 has two communication gaps B351, B352, the baffle C35 has a communication gap C351, and The baffle D35 has a communication gap D351. The communication gaps B351 , B352 , C351 , and D351 are respectively located between the communication opening 350 and the second water inlet channel 25 .

Therefore, the communication gaps B351, B352, C351, D351 can also provide the working fluid to pass through and flow downward. It can be understood that, depending on the flow speed of the working fluid or the delivered water pressure, the working fluid may first pass through the above-mentioned communication gap, or pass through the communication opening 350 located relatively far away. In other words, if the above-mentioned communication gap is designed, the original communication opening 350 can produce a diversion effect, so that the relatively low temperature working fluid can be evenly guided to the heat transfer structure 34 or the lower cavity All parts of the chamber 301 can exchange heat with the heat transfer structure 34 evenly, so that the liquid cooling head 2 presents a good temperature uniformity. Of course, the position, shape, size or number of the above-mentioned communication gaps may not be limited to those shown in Figures 2B to 2D, and the shapes of the gaps may be, for example, squares, triangles, circles, etc. The length can be wavy or jagged, etc.

Figure 3A is a schematic diagram of a vertical cross-section of the extension direction of the nozzle of the second water inlet channel 22; Figure 3B is a schematic diagram of a vertical cross-section of the extension direction of the nozzle of the first water inlet channel 21; Figure 3C is a diagram of the The extension direction of the nozzle of the drainage channel 23 is shown as a vertical cross-section; Figure 3D shows a horizontal cross-section of the pipe diameter direction of the first water inlet channel 21 , the second water inlet channel 22 and the drainage channel 23 . The flow of the working fluid is shown in the direction of the arrows in FIGS. 3A to 3D. The lower chamber 301 is jointly defined by the casing 20 , the baffle 35 and the base 30 , in addition to the heat transfer structure 34 , the water collecting structure 31 , the first flow guiding structure 32 and the second The flow guiding structure 33 is also accommodated in the lower chamber 301 .

As shown in FIGS. 3A to 3D , the working fluid entering the liquid cooling head 2 can optionally flow into the first water inlet channel 21 or the second water inlet channel 22 . The working fluid flowing in from the second water inlet channel 22 first flows into the water storage chamber 201 , and then turns to flow downward through the communication opening 350 into the lower chamber 301 . Part of the working fluid flowing in from the first water inlet channel 21 may first flow into the water storage chamber 201 , or part of the working fluid may be directly turned to pass through the communication opening 350 and flow downward into the lower chamber 301 . Then, the working fluid can exchange heat with the heat transfer structure 34 through the interior of the heat transfer structure 34 . Finally, the working fluid enters below the fan blade assembly 261 and is sucked upward by the fan blade assembly 261 , and then flows out of the liquid cooling head 2 to the adjacent drainage channel 23 .

FIG. 4A illustrates the situation in which the fan blade assembly 261 and the blocking piece 27 are disposed on the water collecting structure 31 . As mentioned above, the water collecting structure 31 is located between the first diversion structure 32 and the second diversion structure 33 . Secondly, FIG. 4B also shows that the water collecting structure 31 has a disc body 310, three flow channels 31a, 31b, 31c and a shaft rod fixing member 31d, wherein the flow channels 31a, 31b, 31c are formed in the The disc body 310 faces a disc surface 310A of the housing 20 , more specifically, the flow channels 31 a , 31 b , 31 c are formed on the disc surface 310A of the disc body 310 facing the housing 20 equiangularly. The flow channel 31 a is directly connected to or adjacent to the heat transfer structure 34 , the flow channel 31 b is adjacent to the first flow guiding structure 32 , and the flow channel 31 c is adjacent to the second flow guiding structure 33 . However, the present invention does not limit the flow channels 31a, 31b, 31c to be formed on the disc body 310 equiangularly. The shaft rod fixing member 31d is located at the intersection of the flow channels 31a, 31b, 31c. The first diversion structure 32 and the second diversion structure 33 are of a multi-ditch design, and the disc body 310 is of a disc-shaped design. The fan blade assembly 261 is pivotally located in the shaft rod fixing member 31 d and the lower groove 29 .

As shown in FIG. 1D, the fan blade assembly 261 includes a fan blade 262 and a shaft rod 263 passing through the fan blade 262, wherein the shaft rod 263 has a bottom end 263B and a top end 263A opposite to each other. 263 is arranged in such a way that the bottom end 263B of the shaft rod 263 can be set in the shaft rod fixing member 31d through the opening 270 or the top end 263A of the shaft rod 263 can be set in the groove 29 under the casing 20 (section 2A). Figure), and an annular Mylar washer (not shown in the figure) can be added to the shaft rod 263 between the fan blade 262 and the shaft rod fixing member 31d to prevent the fan blade 262 from rotating with The shaft rod fixing member 31d is worn. In one embodiment, the fan blade 262 of the fan blade assembly 261 includes a chassis 264 and a plurality of blades 266 disposed on the chassis 264 , and the chassis 264 has a hollow portion 265 . When the fan blade assembly 261 rotates, the hollow portion 265 can suck up the working fluid under the fan blade 262, and then flow out of the liquid cooling head 2 from the adjacent drainage channel 23, but not limited thereto.

In detail, the working fluid passing through the heat transfer structure 34 will flow out from the middle and both sides, the part flowing out from the middle will directly enter the flow channel 31a, and the part flowing out from the two sides will be respectively Enter into the first diversion structure 32 or the second diversion structure 33 . Therefore, under the space surrounded by the housing 20 , the baffle 35 and the base 30 , the working fluid flowing out of the first guide structure 32 can be guided to the flow channel 31 b , and the second guide fluid can flow from the second guide The working fluid flowing out of the structure 33 can be guided to the flow channel 31c. Therefore, through the design of the first diversion structure 32 , the second diversion structure 33 and the water collecting structure 31 , the guiding and concentrating effects on the flow of the working fluid can be effectively improved, so that the fan blade assembly 261 can It is more conducive to suction and drainage.

FIG. 5A is a schematic perspective view of the liquid cooling head 3 according to an embodiment. FIG. 5B is a schematic exploded view of the components of the liquid cooling head 3 of this embodiment. As shown in Fig. 5A and Fig. 5B, the liquid cooling head 3 is substantially the same as the above-mentioned liquid cooling head 2, the difference is that the liquid cooling head 3 is a one-piece dual cavity, wherein the first water inlet channel 21 and the drain The channel 23 is located on the housing 20 oppositely, and is located in half of the housing 20 . The liquid cooling head 3 further includes two external channels 220 and 221 and a pipeline 290 . The external passages 220 and 221 are respectively located on two opposite sides of the casing 20 and on the other half of the casing 20 . In this embodiment, the number of holes of the liquid cooling head 3 is increased to four, so that the water route of the pipeline can become more flexible, thereby reducing the space occupied by the pipeline 290 for the system. The pipeline 290 is fixedly located in the housing 20 (that is, in the water storage chamber 201 ), is connected to the external channels 220 and 221 , and is airtightly isolated from the water storage chamber 201 . Different from the working fluid sent from the drainage channel 23 , the external channel 220 is used to send the working fluid from another source (as indicated by the arrow in FIG. 5A ), and flows out from the external channel 221 through the pipeline 290 .

FIG. 6 is an exploded schematic view of the housing 20 of the liquid cooling head according to an embodiment. As shown in FIG. 5B and FIG. 6 , more specifically, the baffle 35 has a groove 353 . The groove 353 is formed on a surface of the baffle 35 facing the casing 20 . The casing 20 further includes a tube cover 600 . The pipe cover 600 covers the groove 353 to form the above-mentioned pipeline 290 . The housing 20 includes two positioning grooves 211 . The positioning grooves 211 are located in the upper chamber (eg, the water storage chamber 201 ), and are recessed at intervals on the inner surface 359 of the housing 20 facing the baffle 35 . The tube cover 600 further includes two positioning ribs 610 . The two positioning ribs 610 are respectively integrally formed and connected to the outer surface of the pipe cover 600 . Wherein, when the housing 20 and the baffle 35 are combined with each other, each positioning rib 610 is inserted into one of the positioning grooves 211 in a matched manner, so as to position the tube cover 600 .

The implementation of the liquid cooling module 4 proposed by the present invention will now be described with an embodiment. See Figures 7A to 9. 7A to 7C are schematic perspective views of the liquid cooling module 4; Figure 7D is an exploded schematic diagram of the components of the liquid cooling module 4; and Figure 8A is a vertical cross-sectional view of the liquid cooling module 4 Schematic diagrams; FIG. 8B is a schematic diagram of the flow direction of the working fluid in the liquid cooling module 4 ; FIG. 9 is a schematic diagram of the arrangement of the liquid cooling module 4 and an external fan 50 .

As shown in FIGS. 7A to 7D, the liquid cooling module 4 of the present invention mainly includes two parts, one is a tower-type liquid cooling exhaust device 40, and the other is a liquid cooling head 2' , and the tower-type liquid cooling device 40 is vertically stacked on the liquid cooling head 2'. The liquid cooling head 2' is the liquid cooling head used in the above-mentioned embodiments. However, in order to be vertically integrated with the tower-type liquid cooling exhaust device 40, a first water inlet channel 21' and a drainage channel 23' in the liquid cooling head 2' of this embodiment are L-shaped nozzles. The liquid cooling module 4 further includes a front pipeline 41 and a rear pipeline 42 , so that the liquid cooling head 2 ′ is formed through the front pipeline 41 and the rear pipeline 42 and the tower-type liquid cooling device 40 . Up and down water circulation.

In detail, the tower-type liquid cooling exhaust device 40 further includes an upper case 43 , a lower case 44 and a heat dissipation laminated structure 450 . The upper casing 43 has a water inlet 431 and a water outlet 432 , wherein the upper casing 43 is connected to the front pipeline 41 through the water inlet 431 , and is connected to the rear pipeline 42 through the water outlet 432 . Next, the front pipeline 41 is connected to the water inlet 431 and the drainage channel 23, and the rear pipeline 42 is connected to the water outlet 432 and the first water inlet channel 21'. The heat dissipation stack structure 450 includes a plurality of heat dissipation fin sets 45 . These heat dissipation fin groups 45 are located between the upper case 43 and the lower case 44 . Each heat dissipation fin group 45 is stacked between the upper case body 43 and the lower case body 44 by a row of a plurality of heat dissipation fins. It can be understood that the stacking between the tower-type liquid-cooling exhaust device 40 and the liquid-cooling head 2' also needs to use or additionally design relevant locking parts or engaging structures to strengthen the bonding strength of each other.

Figures 7A and 7B also illustrate that the liquid cooling module 4 further includes a casing 400 , and Figures 7C and 7D respectively show the appearance and decomposition of the casing 400 after removing the casing 400 . As shown in FIG. 7A and FIG. 7B , the casing 400 has no shields on both ends corresponding to the drainage channel 23 ′ and the first water inlet channel 21 ′, that is, when the casing 400 is assembled, it will The heat dissipation fin group 45 of the tower-type liquid cooling exhaust device 40 is exposed (please refer to Fig. 7D). Secondly, the front pipeline 41 and the rear pipeline 42 located on the side can also provide wind shielding function. In addition to the design of the housing 400, in addition to enabling the outside air to enter the airflow channels of the heat dissipation fin sets 45, The resistance of the airflow can also be reduced to make the airflow more concentrated, thereby enhancing the air cooling effect of the heat dissipation fin sets 45 .

Therefore, as shown in Fig. 7B, the side surface of the casing 400 corresponding to the first water inlet channel 21' can be further designed to be an inclined plate 401 that expands obliquely outward to facilitate the concentrated inflow of airflow.

As shown in FIG. 8A , the heat dissipation stack structure 450 further includes a plurality of fin tube layers 460 . Each of the fin tube layers 460 includes a plurality of fin tubes 46 , and the fin tubes 46 are parallel to each other and located between any two adjacent heat dissipation fin sets 45 . The fin tubes 46 and the heat dissipation fin groups 45 are arranged in a manner that a row of the heat dissipation fin groups 45 is inserted beside a row of the fin tubes 46 to form multiple rows of alternately inserted. In addition, in this embodiment, the upper case 43 is designed to have a plurality of first chambers 430 isolated from each other, and these first chambers 430 are arranged in sequence, wherein the first first chamber 430 is connected to the water inlet 431, and the last first chamber 430 is connected to the water inlet 431. A chamber 430 is connected to the water outlet 432 . The lower case 44 has a plurality of second chambers 440 isolated from each other, and the second chambers 440 are arranged in sequence. The distribution range of the second chambers 440 corresponds to the distribution range of the first chambers 430 . The fin tubes 46 form fluid communication between the second chambers 440 and the first chambers 430 . The fin tubes 46 are connected to the first chambers 430 and the second chambers 440 respectively, so that an S-shaped path is formed in the upper case 43 , the heat dissipation laminated structure 450 and the lower case 44 ( Figure 8B).

See also Figures 8A and 8B. When the working fluid gradually fills up one of the first chambers 430 , the working fluid can descend into the corresponding second chamber 440 through the corresponding one or more fin tubes 46 . When the working fluid maintains a certain water pressure and water volume, the working fluid will flow from the front end to the rear end in the second chambers 440, or may be squeezed to pass through the corresponding one or more fins again The tube 46 rises into the next or adjacent first chamber 430 . In this way, after repeated descending and ascending processes, the working fluid can sufficiently exchange heat with the heat dissipation fin sets 45 . The flow direction of the working fluid in the liquid cooling module 4 can be shown by the solid arrows in FIG. 8B . However, it can be understood that the actual flow situation will not be limited to this, and the flow pattern may also be changed depending on the situation.

From the illustration of the embodiment, it can be seen that the working fluid with relatively high temperature flows out from the drainage channel 23', so the working fluid in the front pipeline 41 will be relatively hot. Since the second chambers 440 only have outlets that are in fluid communication with the fin tubes 46 , the working fluid flowing in the first chambers 430 , the fin tubes 46 and the second chambers 440 will eventually be Squeeze and flow to the water outlet 432 , and finally flow into the rear pipeline 42 . The working fluid in the back line 42 will have a relatively low temperature, so that it can return to the liquid cooling head 2' for cooling. The working fluid with relatively low temperature in the rear pipeline 42 can receive the outside air flow on the air inlet side (as shown by the hollow arrow in FIG. 8B ) for air cooling and cooling, thereby improving the heat dissipation effect.

In Fig. 9, the appearance of the liquid cooling module 4 after removing the casing 400 is shown for illustration. As shown in FIG. 9 , the liquid cooling module 4 can be matched with the external fan 50 . The external fan 50 is located on one side of the heat dissipation stack structure 450 and is fixed to the upper case 43 and the lower case 44 In between, it is used to output air flow to the heat dissipation fin group 45 . The optimal installation position of the external fan 50 is the exposed portion of the heat dissipation fin sets 45 above the first water inlet channel 21'. In other words, the external fan 50 and the 21' of the liquid cooling head 2' are both located on the same side of the liquid cooling module 4.

It should be understood that the above-mentioned liquid cooling head of the present invention can be, for example, a water cooling head, and the liquid cooling module is, for example, a water cooling module, however, the present invention is not limited thereto.

In this way, through the structures of the above embodiments, the present invention can not only achieve good heat dissipation effect, but also be beneficial to be applied to related computer equipment, host or server equipment.

Finally, the above disclosed embodiments are not intended to limit the present invention. Anyone who is familiar with the art can make various changes and modifications without departing from the spirit and scope of the present invention. invention. Therefore, the protection scope of the present invention should be determined by the scope of the appended patent application.

2, 2', 3: liquid cooling head 10: Chassis 20: Shell 200: top cover 201: Water storage cavity 21, 21': The first water inlet channel 211: Positioning slot 22: Second water inlet channel 220, 221: External channel 23, 23': Drainage channel 24: Single hole locking ring 25: Double hole locking ring 26: Pump group 260: Drive Components 261: Fan blade assembly 262: Fan blade 263: Shaft Rod 263A: Top 263B: Bottom 264: Chassis 265: hollow part 266: Blade 27: Baffle 270: Opening 28: Upper groove 29: Lower groove 290: Pipeline 30: base 30A: The inner surface of the base 301: Lower Chamber 31: Water catchment structure 31a, 31b, 31c: Three runners 31d: Axle rod holder 310: Disc body 310A: Disc Surface 32: The first diversion structure 33: Second diversion structure 34: Heat Transfer Structure 341: Fins 35, B35, C35, D35: baffle 350: Communication opening B351, B352, C351, D351: Connecting gap 353: Groove 359: Inside 4: Liquid cooling module 40: Tower type liquid cooling device 400: Shell 401: Inclined Plate 41: Front pipeline 42: Rear pipeline 43: Upper box 430: First Chamber 431: water inlet 432: Water outlet 44: Lower box 440: Second Chamber 45: Cooling fin group 450: Heat dissipation laminated structure 46: Fin tube 460: Fin tube layer 50: External fan 600: Tube cover 610: Positioning ribs

In order to make the above and other objects, features, advantages and embodiments of the present invention more clearly understood, the accompanying drawings are described as follows: 1A and 1B are schematic perspective views of a liquid cooling head according to an embodiment; Fig. 1C is a schematic diagram of an exploded component of the liquid cooling head of this embodiment; 1D is a schematic perspective view of the fan blade assembly of this embodiment; Figure 2A is a schematic view of the assembly of the housing and the baffle plate of this embodiment; Figures 2B to 2D are schematic diagrams of changes of different baffles; 3A to 3D are schematic diagrams of the flow direction of the working fluid in the liquid cooling head; 4A and 4B are schematic diagrams of the arrangement of the base and the water collecting structure of this embodiment; 5A is a schematic perspective view of a liquid cooling head according to an embodiment; Fig. 5B is an exploded schematic diagram of the components of the liquid cooling head of this embodiment; FIG. 6 is an exploded schematic view of the housing of the liquid cooling head according to an embodiment; 7A to 7C are three-dimensional schematic diagrams of the liquid cooling module; Figure 7D is a schematic diagram of component decomposition of the liquid cooling module; Figure 8A is a three-dimensional schematic view of the liquid cooling module in vertical section; FIG. 8B is a schematic diagram of the flow direction of the working fluid in the liquid cooling module; and FIG. 9 is a schematic diagram of the arrangement of a liquid cooling module and an external fan according to an embodiment.

Domestic storage information (please note in the order of storage institution, date and number) none Foreign deposit information (please note in the order of deposit country, institution, date and number) none

20: Shell

201: Water storage cavity

22: Second water inlet channel

30: base

301: Lower Chamber

32: The first diversion structure

34: Heat Transfer Structure

35: Baffle

350: Communication opening

Claims (14)

A liquid cooling head, comprising: a casing, including a casing, a baffle and a base, the casing, the baffle and the base are sequentially combined into a whole, and a space is formed between the casing and the baffle. The upper chamber, a lower chamber is formed between the baffle and the base, a communication opening is located on the baffle, and connects the upper chamber and the lower chamber which are stacked on each other; a first water inlet channel is located in the upper chamber. One side of the casing is connected to the upper chamber for feeding a working fluid from a source into the upper chamber; a heat transfer structure is located in the lower chamber and clamped between the baffle plate and the base between, and exchange heat with the working fluid; a water collecting structure, located in the lower chamber; a drainage channel, located on one side of the shell and connected to the lower chamber; and a pump group, used for The working fluid in the lower chamber is discharged to the drainage channel, wherein the water collecting structure is used for guiding and concentrating the working fluid passing through the heat transfer structure to the pump group. The liquid cooling head according to claim 1, further comprising: a second water inlet channel located on the other side of the housing and connected to the upper chamber for feeding working fluid from another source to the upper chamber In the chamber, the first water inlet channel and the second water inlet channel are respectively located on the housing opposite to each other. The liquid cooling head of claim 1, wherein the first water inlet channel and the drain channel are located on the same side of the housing; or, The first water inlet channel is located on the housing opposite to the drainage channel. The liquid cooling head according to claim 1, wherein the baffle plate further has at least one communication gap, the communication gap is located between the communication opening and the first water inlet channel, and connects the upper chamber and the lower chamber room. The liquid cooling head of claim 1, wherein the heat transfer structure comprises a plurality of fins juxtaposed with each other, the base has a first flow guide structure and a second flow guide structure, the fins, the water collecting The structure, the first guide structure and the second guide structure are all formed on the inner surface of a base of the base facing the casing, and the first guide structure and the second guide structure are located at the same time as the heat transfer structure. side, for guiding the working fluid passing through the fins to the water collecting structure respectively, and the water collecting structure is located between the first diversion structure and the second diversion structure. The liquid cooling head according to claim 5, wherein the water collecting structure comprises a disc body and three flow channels, the disc body is located on the inner surface of the base of the base, and the flow channels are mutually formed on the disc The main body faces a disk surface of the casing, and is used for respectively receiving the working fluid sent from the fins, the first flow guiding structure and the second flow guiding structure. The liquid cooling head according to claim 6, wherein the pump group comprises a drive assembly and a fan blade assembly, and the drive assembly can rotate the fan blade assembly in a non-contact manner; The fan blade assembly includes a fan blade and a shaft rod passing through the fan blade, the water collecting structure includes a shaft rod fixing member, the casing includes a blocking piece, and the shaft rod fixing member is located at an intersection of the flow channels, The blocking piece is clamped to the disc body and the fan blade, and covers the flow passages, the blocking piece has an opening, and the shaft rod is arranged on the shaft rod fixing member through the opening; and the Two opposite surfaces of the casing respectively have an upper groove and a lower groove, the lower groove is vertically aligned with the upper groove, and is airtightly isolated from the upper groove, the upper groove accommodates the driving component, the The lower groove accommodates the fan blade assembly, and the fan blade assembly is pivotally located in the shaft rod fixing member and the lower groove. The liquid cooling head according to claim 1, further comprising: two external channels, located on two opposite sides of the casing; and a pipeline, located in the upper chamber, connected to the external channels, and connected to the upper chamber Airtight isolation. The liquid cooling head of claim 8, wherein the baffle plate has a groove, and the casing further includes a pipe cover, the pipe cover covers the groove to form the pipeline. The liquid cooling head according to claim 9, wherein the casing comprises a positioning groove, the positioning groove is located in the upper chamber and is recessed on an inner surface of the casing facing the baffle; and the casing is further A positioning rib is included, the positioning rib is integrally formed and connected to the outer surface of the tube cover, and extends into and abuts into the positioning groove for positioning the tube cover. A liquid-cooling module, comprising: a liquid-cooling head as described in claim 1; a tower-type liquid-cooling discharge device, comprising: an upper box body, comprising a water inlet, a water outlet, and a plurality of mutually isolated first a chamber, one of the first chambers is connected to the water inlet, and the other of the first chambers is connected to the water outlet; a lower box, vertically stacked on top of the liquid cooling head, includes A plurality of mutually isolated second chambers; and a heat dissipation laminated structure, including a plurality of heat dissipation fin sets and a plurality of fin tubes, the heat dissipation fin sets and the fin tubes are located between the upper case and the lower case , the fin tubes are parallel to each other and located between any two adjacent sets of heat dissipation fins, the fin tubes are respectively connected to the first chambers and the second chambers, so that an S-shaped path is formed Formed in the upper case body, the heat dissipation laminated structure and the lower case body; a front pipeline connecting the water inlet and the drainage channel of the liquid cooling head; and a rear pipeline connecting the water outlet and the water outlet The first water inlet channel of the liquid cooling head. The liquid cooling module of claim 11, wherein the tower-type liquid cooling exhaust device further comprises an external fan, the external fan is located on one side of the heat dissipation stack structure, and is fixed between the upper case and the lower case space for outputting air flow toward the heat dissipation fin group. The liquid cooling module of claim 12, wherein the external fan and the first water inlet channel of the liquid cooling head are located on the same side of the liquid cooling module. The liquid cooling module according to claim 11, wherein a side surface of the casing corresponding to the side of the first water inlet channel has a sloping plate that expands obliquely outward.

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