TW202100929A - Cold plate - Google Patents

Abstract

The present invention provides a cold plate, comprising: a heat absorption chamber for a working medium to be filled in; a heat transfer structure disposed on a base within the heat absorption chamber for transferring heat energy generated from a heat source contacting to the base to the working medium; a chamber disposed above the heat transfer structure within a casing and separated from the heat absorption; and a connection structure disposed in the casing to communicate with the chamber and the heat absorption chamber.

Description

Water block

The invention relates to the field of heat dissipation, in particular to a water cooling head.

In response to modernization needs, computers and various electronic devices have developed rapidly and their performance has been continuously improved. However, in the process, heat dissipation problems caused by high-performance hardware have also followed. Generally speaking, computers and various electronic devices usually use heat-dissipating components to dissipate heat. For example, heat-dissipating paste or heat sinks are used to attach heat to the electronic components to be dissipated to absorb and dissipate heat. However, the effect of this heat dissipation method is limited, so a heat dissipation module using a liquid cooling method has been developed.

Existing heat dissipation modules that use liquid cooling methods generally use coolant to absorb heat. For example, the coolant is fluidly connected to electronic components to be dissipated. The heated coolant can flow to a lower temperature for heat exchange. The subsequent cooling liquid can then flow to the electronic components to be dissipated to absorb heat energy, thus forming a heat dissipation cycle.

However, when the existing heat dissipation module transports the cooling liquid to the space for absorbing heat energy in the electronic components to be dissipated, the storage space of the cooling liquid is often insufficient, which causes the lack of cooling liquid supply when the position of the water block is changed or moved. problem.

Therefore, how to propose a water-cooling head that can solve the above-mentioned problems is one of the urgent problems in the industry.

An object of the present invention is to provide a water cooling head, comprising: a housing; a base coupled to the housing to form a working space between the housing and the base for a working medium to flow therein; a cavity, It is formed in the shell and separated from the working space, and communicates with the working space through a communicating structure; the heat transfer structure is arranged on the inner side of the base to transfer the heat generated by the heat source on the outer side of the base The working medium transferred to the working space; and a pump, which is arranged above part of the heat transfer structure to partition the working space into a heat absorption space and a drainage space, so as to drive the working medium from the chamber through the The communication structure flows to the heat absorption space and the drainage space.

The aforementioned water cooling head further includes: a first water inlet channel connected to the chamber to allow the working medium to flow into the cavity; a second water inlet channel connected to the communicating structure to enable the The working medium flows into the heat absorption space; and the drainage channel is connected with the drainage space to discharge the working medium from the drainage space.

In the aforementioned water cooling head, the first water inlet channel and the drain channel are located on the same side of the casing, and the second water inlet channel and the drain channel are located on different sides of the casing.

In the aforementioned water cooling head, the communication structure is provided between the cavity in the housing and the second water inlet channel.

In the aforementioned water cooling head, the shell has a recess on the side combined with the base, and the height of the heat transfer structure under the pump is lower than the height of the heat transfer structure under the recess.

In the aforementioned water cooling head, the cavity is exposed on the side opposite to the side where the shell and the base are combined.

In the aforementioned water cooling head, the communicating structure is a channel formed in the housing and communicating one side of the cavity and the surroundings of the heat transfer structure.

In the aforementioned water cooling head, the communicating structure is a diversion groove on the shell that penetrates the chamber to the working space.

In the aforementioned water cooling head, the diversion groove is located above a part of the heat transfer structure.

In the aforementioned water cooling head, the heat transfer structure is a plurality of fins, and the extension direction of the flow guide groove is different from the extension direction of the plurality of fins.

In the aforementioned water-cooling head, a confluence area is recessed on the inner side of the base around the heat transfer structure to guide the working medium under the pump.

Another object of the present invention is to provide a water-cooling head, including: a heat absorption space for working medium to flow therein; a heat transfer structure, which is arranged on a base and located in the heat absorption space, and is used to connect a heat source in contact with the base The generated heat energy is transferred to the working medium; the cavity is located in the shell above the heat transfer structure and separated from the heat absorption space; and the communication structure is provided in the shell to communicate the cavity and the heat absorption space.

The aforementioned water cooling head further includes: at least one water inlet channel for allowing the working medium to flow into the chamber; and a drainage channel for discharging the working medium from the heat absorption space.

In the aforementioned water cooling head, the water inlet channel and the drain channel are located on the same side or different sides of the housing.

In the aforementioned water cooling head, the communication structure is provided between the chamber and the water inlet channel in the housing.

In the aforementioned water cooling head, the shell has a recess on the side facing the heat transfer structure, and the height of the heat transfer structure located under the recess is higher than the height of the heat transfer structure not located under the recess.

In the aforementioned water cooling head, the cavity is exposed on the side opposite to the side of the shell facing the heat transfer structure.

In the aforementioned water cooling head, the communicating structure is a channel formed in the housing and communicating one side of the cavity and the surroundings of the heat transfer structure.

In the aforementioned water cooling head, the communication structure is a diversion groove on the shell that penetrates the cavity to the heat absorption space.

In the aforementioned water cooling head, the diversion groove is located above a part of the heat transfer structure.

In the aforementioned water cooling head, the heat transfer structure is a plurality of fins, and the extension direction of the flow guide groove is different from the extension direction of the plurality of fins.

In the aforementioned water-cooling head, a confluence area is recessed on the base around the heat transfer structure.

1, 1’: Water cooling head

2: shell

21: Electromechanical chamber

22, 22’: The first water inlet channel

23, 23’: The second water inlet channel

24: Chamber

241: diversion groove

25, 25’: Drainage channel

26: Channel

27: recess

28, 29: Groove

3: upper cover

4: base

41: Endothermic surface

42: Heat transfer structure

43: inside

44: Confluence area

45: Groove

5: Pump

51: circuit board

52: The first magnetic element

53: fan blade

531: top wall

532: Chassis

533: Partition Wall

534: Bushing

535: Shaft

536: Hollow

537: rib

538: Drain cavity

539: fixed parts

54: second magnetic element

55: Wire

6: Action space

61: Endothermic space

62: Drainage space

71, 72, 73: pipeline

74: cap

8: Outer cover

9A, 9B, 9C: Connector

θ: Angle

Figures 1A and 1B are three-dimensional schematic diagrams of the water block of the present invention from different viewing angles.

Figure 1C is an exploded schematic diagram of the water block of the present invention.

2A to 2D are three-dimensional schematic diagrams of the housing and pump of the water block of the present invention from different viewing angles.

Figure 3A is a schematic cross-sectional view taken along the line 3A-3A in Figure 1A.

Figure 3B is a schematic cross-sectional view taken along the line 3B-3B in Figure 1A.

Figure 3C is a schematic cross-sectional view taken along the line 3C-3C in Figure 1A.

Figure 3D is a schematic cross-sectional view taken along the line 3D-3D in Figure 1A.

Figure 4A is a perspective view of the pump and the base of the water cooling head of the present invention.

4B and 4C are three-dimensional schematic diagrams of the pump in different viewing angles in the water block of the present invention.

Figures 5A and 5B are schematic diagrams when the water block of the present invention and other water blocks form a circuit together.

Fig. 6A is a perspective view of another embodiment of the water block of the present invention.

Figure 6B is a perspective view of Figure 6A with the housing disassembled.

Figures 6C and 6D are three-dimensional diagrams of the chamber exposed from different perspectives after the upper cover is disassembled in Figure 6B.

Figure 6E is an exploded schematic view of another embodiment of the water block of the present invention.

Figures 7A and 7B are perspective schematic views of the housing and the pump after and before assembly in another embodiment of the water cooling head of the present invention.

Figure 8A is a schematic cross-sectional view taken along the line 8A-8A in Figure 6A.

Figure 8B is a schematic cross-sectional view taken along section line 8B-8B in Figure 6A.

Figure 8C is a schematic cross-sectional view taken along the line 8C-8C in Figure 6A.

9A and 9B are schematic diagrams of the process of the working medium flowing between the housing and the base in another embodiment of the water cooling head of the present invention.

Figures 9C to 9E are schematic diagrams of different implementations of the diversion groove in another embodiment of the water block of the present invention.

The following specific examples illustrate the implementation of the present invention, and those skilled in the art can easily understand the other advantages and effects of the present invention from the contents disclosed in this specification, as well as other different specific embodiments. To implement or apply.

The water cooling head provided by the present invention can be installed in electronic devices such as a computer host or a server. The inside of the water cooling head can be filled with a working medium (such as coolant), which can absorb heat sources (such as chips or electronic components such as memory). ) The heated working medium can be sent to the condensing device to cool down the heat generated, and the cooled working medium can be transferred back to the water block for the next heat absorption and circulating flow.

Please refer to FIGS. 1A to 1C and 2A to 2D at the same time. The water cooling head 1 of the present invention may include a housing 2, an upper cover 3, a base 4, and a pump 5. The housing 2 can be used as the main structural part of the water cooling head 1. The upper part is combined with the upper cover 3, and the lower part is combined with the base 4, and the sides can be formed with a first water inlet channel 22, a second water inlet channel 23 and a drain channel 25. The above-mentioned combination of the housing 2 and the components can be formed with fixing structures such as screw holes, studs or fasteners on different parts of the housing 2, so as to facilitate the combination of the various components by locking during assembly. However, the present invention It is not limited to this combination.

In this embodiment, the housing 2 can define different chambers and channels in structure, including an electromechanical chamber 21, a first water inlet channel 22, a second water inlet channel 23, a chamber 24, a drain channel 25, etc. Among them, the electromechanical chamber 21 opens on the top side of the housing 2 and is independent of the path of the working medium flowing in the water cooling head 1, so that the energized components arranged in the electromechanical chamber 21 can be protected to avoid the occurrence of the working medium. Short circuit situation.

In this embodiment, the pump 5 may include a circuit board 51, a first magnetic element 52, a fan blade 53, and a second magnetic element 54, wherein the circuit board 51 and the first magnetic element 52 may be arranged in the electromechanical chamber 21 , And the fan blade 53 and the second magnetic element 54 are arranged on the other side of the electromechanical chamber 21 (for example, located at In the path through which the working medium flows, such as in the groove 28 shown in Figure 2C), and the circuit board 51 is used to provide the power required for the operation of the pump 5, for example, a wired connection method using a wire 55 (such as 6A to 6D), or other wireless connection methods such as electromagnetic induction to connect a power source (not shown). In this embodiment, the circuit board 51 and the first magnetic element 52 are separated from the fan blade 53 and the second magnetic element 54 by the housing 2, but the first magnetic element 52 and the second magnetic element 54 are still Coaxial setting. In one embodiment, the first magnetic element 52 and the second magnetic element 54 can be selected from magnets or other materials that can be driven or attracted by a magnetic field. In addition, the second magnetic element 54 is combined with the fan blade 53. When the pump 5 is energized, under the joint action of the circuit board 51, the first magnetic element 52, and the second magnetic element 54, the axis of the second magnetic element 54 The connected fan blade 53 is driven by the second magnetic element 54 to rotate, so that the rotation of the fan blade 53 leads the working medium to flow.

In this embodiment, the base 4 is used to absorb heat energy, and its material can be selected from metal or other materials with good thermal conductivity. The base 4 can be a one-piece (integrally formed) structure, or a composite structure composed of multiple layers or multiple elements, and the present invention is not limited thereto. The outer side of the base 4 (the side away from the housing 2) has a heat-absorbing surface 41, and a heat transfer structure 42 is formed (or can be provided) on the inner side 43 (the side facing the housing 2) of the base 4, wherein the heat-absorbing surface 41 It can be in direct or indirect contact with the heat source, so that the heat absorbing surface 41 can absorb the heat energy generated by the heat source and then transfer the heat energy to the heat transfer structure 42. The heat transfer structure 42 will then transfer the heat energy to the work through contact with the working medium. medium.

In one embodiment, the heat transfer structure 42 of the base 4 can be skived fins, or other columnar, sheet-like, or even irregularly shaped fins, as long as it can increase contact with the working medium The area of ?? allows the heat to be transferred to the working medium faster, and the present invention does not limit the specific structure of the heat transfer structure 42.

Please refer to Figures 3C and 3D for cooperation. When the base 4 is combined with the housing 2, the housing 2 and the base 4 can jointly define a working space 6, which can be filled with and flowed by working medium . In one embodiment, the action space 6 can be separated by a heat absorption space 61 and a drainage space 62 by the fan blades 53 of the pump 5, instead of relying on other partition walls or compartments, etc., thereby simplifying the water block 1 Internal structure. In this embodiment, the first water inlet channel 22 and the second water inlet channel 23 of the housing 2 are connected to the heat absorption space 61 to allow the cooled working medium to flow into the heat absorption space 61, so that the working medium can absorb the heat The thermal energy transferred by the thermal structure 42. The fan blade 53 can directly suck the working medium from the heat absorption space 61 to the drainage space 62. In addition, the drainage channel 25 is connected to the drainage space 62, so the heated working medium can be transported to the outside of the water block 1 for cooling. In addition, the first water inlet channel 22, the second water inlet channel 23, and the drain channel 25 can respectively extend outward or be connected to the connectors 9A, 9B, 9C, and connectors 9A, 9B, 9C shown in Figures 6A to 6D. Then, it communicates with the condensing device (such as a water cooling radiator, a fan, etc.) through pipelines 71, 72, and 73 of 5A and 5B. The joints 9A, 9B, and 9C can be connected to the housing 2 vertically or horizontally, or arranged with elbows to meet the different space configuration requirements inside the water cooling head 1, and the present invention is not limited thereto.

The following further describes the overall structure of the fan blade 53 of the pump 5 in the water cooling head 1 of the present invention. Please refer to FIGS. 4B and 4C at the same time. As mentioned above, the working space 6 in the water cooling head 1 of the present invention is separated by the heat absorption space 61 and the drainage space 62 by the fan blade 53 of the pump 5. Therefore, the fan blade 53 itself has both suction working medium and The dual function of discharging working medium. In order to achieve the above-mentioned functions, the fan blade 53 is arranged in the working space 6 and adjacent to the drainage channel 25 to directly suck the working medium from the heat absorption space 61 into the drainage space 62, and then discharge the working medium from the water cooling head 1 through the drainage channel 25. . The fan blade 53 includes a top wall 531, a bottom plate 532, a partition wall 533, a shaft sleeve 534, and a shaft rod 535. A hollow portion 536 is formed between the bottom plate 532 and the shaft sleeve 534, and the bottom plate 532 and the shaft sleeve 534 can pass through the hollow portion At least one rib in 536 537 to connect. The chassis 532 is a structure of the fan blade 53 that mainly divides the action space 6 into a heat absorption space 61 and a drainage space 62, and the heat absorption space 61 and the drainage space 62 are fluidly coupled through the hollow portion 536, that is, The working medium can enter the drainage space 62 from the heat absorption space 61 through the hollow part 536. The top wall 531 and the chassis 532 are spaced apart, and a plurality of partition walls 533 are connected between the two, so that a plurality of drainage cavities 538 can be separated. When the working medium is transferred upwards from the heat absorption space 61 to the drainage space 62 through the hollow part 536, the working medium will first touch the top wall 531 and then turn, move to each drainage cavity 538, and then drain each drain due to centrifugal force. The working medium in the cavity 538 is sequentially thrown into the drainage channel 25 and then discharged from the water block 1. The top wall 531 of the fan blade 53 not only has a guiding function that can change the flow direction, but also prevents the partition wall 533 from directly contacting the housing 2 to reduce the chance of wear.

In this embodiment, the fan blade 53 is driven by the electromagnetic induction between the first magnetic element 52 and the second magnetic element 54 instead of the shaft rod 535. Therefore, the fan blade 53 and the shaft rod 535 are There is no linkage relationship. However, in order to maintain the durability and stability of the fan blade 53 so that it does not deviate from the axis or touch the housing 2 and cause wear when rotating, therefore, a hollow structure sleeve 534 can be provided inside the fan blade 53. 535 sets of shaft rods. In addition, in order to fix the shaft rod 535, one end of the shaft rod 535 can be accommodated in the groove 28 at the top of the working space 6 (that is, the inner side of the housing 2), and the other end can be fixed by a fixing member 539 For fixing, for example, the fixing member 539 is provided with blind holes or perforations for the shaft rod 535 to accommodate. In addition, the fixing member 539 can be received and fixed in a groove 29 on the bottom surface of the housing 2 (as shown in Fig. 7A), or the fixing member 539 can be directly installed in the groove 45 of the base 4 (as shown in Fig. 1C). As shown), the present invention is not limited thereto. In one embodiment, when the shaft 535 is installed in the working space 6, the better way is to extend together with the fixing member 539 or go deep into the heat absorption space 61, which will make the fan blade 53 more stable when rotating. However, the present invention is not limited to this.

In one embodiment, considering the material of the fan blade 53 itself, if necessary, a shaft tube (not shown) can be sleeved and fixed in the shaft sleeve 534. The shaft tube and the shaft sleeve 534 are coaxial with the shaft rod 535. Set, and located between the sleeve 534 and the shaft 535. The material of the shaft tube can be made of abrasion-resistant or more wear-resistant material, so that the wear of the fan blade 53 and the shaft rod 535 during relative rotation can be reduced, and the life of the fan blade 53 can be prolonged.

In order to prevent the supply of working medium in the water cooling head 1 from being interrupted, a chamber 24 is formed in the housing 2. The chamber 24 is in communication with the first water inlet channel 22 so that the working medium flows into the chamber 24 through the first water inlet channel 22. The chamber 24 is also in communication with the second water inlet channel 23 so that the working medium can flow into the chamber 24 through the second water inlet channel 23. In this embodiment, the first water inlet channel 22 and the drain channel 25 can be arranged on the same side of the housing 2 (the side adjacent to the pump 5), and the second water inlet channel 23 can be arranged on a different side A water inlet channel 22 and a drain channel 25 on the other side of the housing 2 (the side away from the pump 5), that is, the first water inlet channel 22 and the second water inlet channel 23 are arranged opposite to the chamber 24 Side, but the present invention is not limited to this. The first water inlet channel 22 and the second water inlet channel 23 can also be arranged on the adjacent side or the same side of the chamber 24 according to the design requirements of the product structure to increase User installation flexibility.

In this embodiment, the chamber 24 is basically physically separated from the working space 6 (that is, the chamber 24 and the working space 6 are separated by the housing 2 independently), but the chamber 24 can penetrate through the housing 2 The communicating structure communicates with the working space. The communicating structure may be, for example, a channel 26 formed in the housing 2. Specifically, the channel 26 is formed on one side of the chamber 24 and is located between the chamber 24 and the second water inlet channel 23. Therefore, the working medium will first pass through the channel 26 after flowing in from the second water inlet channel 23. Will flow into the chamber 24 again.

As shown in Figures 2C and 2D, the side where the housing 2 and the base 4 are combined has a recess 27. After the casing 2 and the base 4 are combined, the recess 27 and the base 4 can jointly define the heat absorption space 61 in the working space 6, and the recess 27 is also communicated with the channel 26. When the working medium flows in from the second water inlet channel 23, it may first pass through the channel 26 and then directly flow into the heat absorption space 61.

In one embodiment, the cavity 24 is exposed on the side opposite to the side where the housing 2 and the base 4 are combined. For example, the cavity 24 can be exposed on the same side as the opening of the electromechanical chamber 21, and can be provided through the upper cover 3. seal. The upper cover 3 can be fixed to the screw hole of the housing 2 by screws, but can also be joined by heating fixing or other joining means, and the present invention is not limited to this. In another embodiment, the upper cover 3 may be made of a transparent or light-transmitting material to help the user observe the supply of the working medium.

After the casing 2 and the base 4 are combined, the channel 26 will be located around the heat transfer structure 42, the recess 27 can accommodate the heat transfer structure 42, and the pump 5 will be arranged above a part of the heat transfer structure 42 (as shown in Figure 4A As shown), this makes the electromechanical chamber 21 and the recess 27 and the chamber 24 used to install the pump 5 in different horizontal positions relative to the housing 2, so that they will not overlap in the vertical direction, which can effectively reduce The height of the water block 1 has a thin design. In one embodiment, as shown in FIGS. 1C, 3B, and 4A, the height of the fins of the heat transfer structure 42 may be unequal. For example, the height of the fins of the heat transfer structure 42 under the pump 5 may be lower than The height of the fins of the heat transfer structure 42 under the recess 27 is to reduce the resistance when the working medium leaves the heat transfer structure 42. In other embodiments, the height of the fins of the heat transfer structure 42 can be the same height, but the invention is not limited thereto.

Please refer to Figures 3A to 3D. The working medium entering the water block 1 can flow into the chamber 24 from the first water inlet channel 22 in the direction of arrow A, or from the second water inlet channel 23 into the chamber 24 in the direction of arrow B. Channel 26. Then, the working medium in the chamber 24 or the working medium flowing in from the second water inlet passage 23 can flow into the passage 26, turn in the passage 26, and flow into the heat absorption space 61 in the direction of arrow C. After that, the working medium passes through the inside of the heat transfer structure 42 in the direction of arrow D to absorb the heat energy absorbed by the heat transfer structure 42 and then flows to the bottom of the pump 5. Finally, the working medium is sucked by the fan blade 53 from the heat absorption space 61 to the drainage space 62 in the direction of arrow E, and is discharged from the drainage channel 25 communicating with the drainage space 62 to the outside of the water block 1 in the direction of arrow F for further processing. cool down.

When the water cooling head 1 of the present invention is applied, since the first water inlet channel 22 and the second water inlet channel 23 are located on different sides of the chamber 24, a plurality of water cooling heads 1, 1'can be connected in series to enhance the cooling efficiency Or heat dissipation of multiple heat sources at the same time. As shown in Figure 5A, the pipeline 71 is the supply pipeline of the working medium, connected to the second water inlet channel 23 of the water block 1, and the working medium drains the water from the water block 1 after absorbing the heat energy inside the water block 1 The channel 25 exits and enters the pipeline 72. The pipeline 72 can be connected to the first water inlet channel 22' of the other water cooling head 1'for the working medium to enter the water cooling head 1'. After the working medium absorbs the heat energy inside the water block 1', it can be discharged from the drain channel 25' of the water block 1', and will leave the water block 1'through the pipeline 73 to the condensing device (not shown). In the above-mentioned embodiment, the second water inlet channel 23' of the water-cooling head 1'can be closed with a cover 74, so that the water-cooling head 1'can be placed near the corner of the casing or close to the side wall of the casing without being exposed to space limits.

In another embodiment, the water block 1, 1'can also be connected in series as shown in Figure 5B. The pipeline 71 is the supply pipeline of the working medium, which is connected to the second water inlet channel 23 of the water-cooled head 1. After the working medium absorbs the heat energy inside the water-cooled head 1, it is discharged from the drain channel 25 of the water-cooled head 1 and enters the pipe Road 72. The pipeline 72 can be connected to the second water inlet channel 23' of the other water cooling head 1'for the working medium to enter the water cooling head 1'. After the working medium absorbs the heat energy inside the water block 1', it can be discharged from the drain channel 25' of the water block 1', and leave the water block 1'via a pipe 73 to the condensing device (not shown). In the above embodiment, the first water inlet channel of the water cooling head 1, 1'can be closed by the cover 74. In this embodiment, the pipes 71 and 73 do not need to pass over the water block 1, 1', which is suitable for a relatively flat space.

Please refer to Figures 6A to 7B, which is another embodiment of the water cooling head 1 of the present invention. The difference between this embodiment and the previous embodiment lies in the design of the communication structure and the heat transfer structure in the housing, and the remaining structural features are substantially the same. Only the differences are explained below, and the same will not be repeated here.

In this embodiment, the communicating structure is a diversion groove 241 formed in the housing 2 and passing through the cavity 24 and the working space 6. Specifically, the diversion groove 241 is an opening formed on the bottom of the cavity 24 (or the recess 27 of the housing 2) and is located above a part of the heat transfer structure 42. In one embodiment, the extending direction of the flow guiding groove 241 is different from the extending direction of the fins of the heat transfer structure 42. For example, the extending direction of the flow guiding groove 241 may be perpendicular to the extending direction of the fins of the heat transfer structure 42, but The present invention is not limited to this. The extension direction of the diversion groove 241 can also be interposed by an angle (such as 30 degrees, 45 degrees, 60 degrees, etc.) with the extension direction of the fins of the heat transfer structure 42. As shown in Figure 9C, two of the diversion grooves 241 The ends can be respectively located in the inflow direction of the working medium along the arrows A and B, so that the extending direction of the diversion groove 241 and the extending direction of the fins of the heat transfer structure 42 sandwich an angle θ, which can be designed according to the product structure There are different changes depending on requirements, and the present invention does not specifically limit the value of the angle θ. In addition, the positions of the two ends of the diversion groove 241 can also be changed according to the design requirements of the product structure, and the present invention does not specifically limit the positions of the two ends of the diversion groove 241.

In one embodiment, the width of an end of the diversion groove 241 adjacent to the first water inlet channel 22 may be greater (or smaller) than the width of an end adjacent to the second water intake channel 23, or the width of one end of the diversion groove 241 The width to the other end of the diversion groove 241 can be gradually reduced. The present invention does not limit the position of the wider end of the diversion groove 241. As shown in Fig. 9A, the wider end of the diversion groove 241 may be adjacent to the first water inlet channel 22, or as shown in Fig. 9D, The wider end of the runner 241 may be adjacent to the second water inlet channel 23. In another embodiment, as shown in FIG. 9E, the diversion grooves 241 may have a uniform width.

In this embodiment, the cavity 24 can be sealed through the upper cover 3, and an outer cover 8 can be combined to strengthen the overall structure. The outer cover 8 can be combined with the housing 2 by screw holes, studs, hooks, slots or fasteners, and the housing 8 can also be made of transparent or light-transmitting material to facilitate the user to observe the supply or flow of the working medium Happening.

Please further refer to Figures 8A to 8C and 9A to 9B. The working medium entering the water block 1 can flow into the chamber 24 from the first water inlet channel 22 along the arrow A direction, or from the second water inlet channel 23 along the arrow B direction Inflow into the chamber 24. Since the bottom of the chamber 24 has a diversion groove 241, the working medium in the chamber 24 will turn to enter the heat absorption space 61 along the arrow C direction, and pass through the heat transfer structure 42 along the arrow D direction and take away the heat transfer structure 42 The heat absorbed. Since the extension direction of the flow guide groove 241 is different from the extension direction of the fins of the heat transfer structure 42, a confluence area 44 can be recessed on the inner side 43 of the base 4 around the heat transfer structure 42. The confluence area 44 can converge and divert the working medium (for example, in the direction of arrow D), and converge in the direction of arrow E to below the fan blade 53 of the pump 5. Then, the working medium is attracted by the fan blade 53 and moves upward from the heat absorption space 61 in the arrow F direction to the drainage space 62. Finally, the working medium is discharged to the outside of the water block 1 in the direction of arrow G through the drain passage 25 communicating with the drain space 62 to be cooled.

With the design of the chamber in the water cooling head of the present invention, the working medium can be effectively temporarily stored in the shell, ensuring that the supply of the working medium will not be interrupted. In addition, the design of the communication structure in the water cooling head of the present invention that communicates with the chamber and the working space can effectively guide the working medium temporarily stored in the chamber to the heat transfer structure for heat absorption. In addition, since the electromechanical chamber, the chamber and the recess of the present invention are located at different horizontal positions of the housing, it can also be used under the chamber where the working medium is temporarily stored, and has the effect of a thinner water block design.

The above-mentioned embodiments are only illustrative to illustrate the technical principles, features and effects of the present invention, and are not intended to limit the scope of the present invention. Anyone familiar with this technology can do the same without departing from the spirit and scope of the present invention. The above embodiments are modified and changed. However, any equivalent modifications and changes made by using the teachings of the present invention should still be covered by the following patent applications. The scope of protection of the rights of the present invention should be listed in the following patent scope.

1: water block

2: shell

21: Electromechanical chamber

22: The first water inlet channel

23: The second water inlet channel

24: Chamber

25: Drainage channel

26: Channel

3: upper cover

4: base

41: Endothermic surface

42: Heat transfer structure

43: inside

45: Groove

5: Pump

51: circuit board

52: The first magnetic element

53: fan blade

539: fixed parts

54: second magnetic element

Claims (22)

A water cooling head, including: case; The base is coupled to the shell to form a working space for the working medium to flow between the shell and the base; The chamber is formed in the housing and separated from the working space, and communicates with the working space through a communicating structure; The heat transfer structure is arranged on the inner side of the base to transfer heat generated by the heat source contacting the outer side of the base to the working medium in the working space; and The pump is arranged above part of the heat transfer structure to partition the working space into a heat absorption space and a drainage space, so as to drive the working medium to flow from the chamber to the heat absorption space and the drainage space through the communication structure . The water block described in item 1 of the scope of patent application includes: The first water inlet channel is in communication with the chamber to allow the working medium to flow into the chamber; The second water inlet channel is in communication with the communication structure for allowing the working medium to flow into the heat absorption space; and The drainage channel is connected with the drainage space for draining the working medium from the drainage space. The water cooling head described in item 2 of the scope of patent application, wherein the first water inlet channel and the drainage channel are located on the same side of the housing, and the second water inlet channel and the drainage channel are located on the housing的 different side. The water-cooling head described in item 2 of the scope of patent application, wherein the communication structure is provided between the chamber in the housing and the second water inlet channel. The water-cooling head described in claim 1, wherein the shell has a recess on the side combined with the base, and the height of the heat transfer structure located under the pump is lower than the height of the heat transfer structure located under the recess The height of the heat transfer structure. According to the water-cooled head described in item 1 of the scope of patent application, the cavity is exposed on the side opposite to the side where the shell and the base are combined. According to the water-cooling head described in item 1 of the scope of patent application, the communication structure is a channel formed in the housing and connected to one side of the cavity and the periphery of the heat transfer structure. The water-cooling head described in item 1 of the scope of patent application, wherein the communication structure is a diversion groove on the shell that penetrates the chamber to the working space. According to the water-cooling head described in item 8 of the scope of patent application, the diversion groove is located above a part of the heat transfer structure. The water-cooling head described in item 9 of the scope of patent application, wherein the heat transfer structure is a plurality of fins, and the extension direction of the diversion groove is different from the extension direction of the plurality of fins. The water-cooled head described in item 8 of the scope of patent application, wherein a confluence area is recessed on the inner side of the base around the heat transfer structure to guide the working medium to the bottom of the pump. A water cooling head, including: The heat absorption space is for the working medium to flow in it; The heat transfer structure is arranged on the base and located in the heat absorption space, and is used to transfer the heat energy generated by the heat source in contact with the base to the working medium; The cavity is located in the shell above the heat transfer structure and separated from the heat absorption space; and The communicating structure is arranged in the shell to communicate the cavity and the heat absorption space. The water block mentioned in item 12 of the scope of patent application includes: At least one water inlet channel for allowing the working medium to flow into the chamber; and The drainage channel is used to discharge the working medium from the heat absorption space. The water-cooling head described in item 13 of the scope of patent application, wherein the water inlet channel and the drain channel are located on the same side or different sides of the housing. The water-cooling head described in item 13 of the scope of patent application, wherein the communication structure is provided between the chamber and the water inlet channel in the housing. The water-cooling head according to item 12 of the scope of patent application, wherein the shell has a recess on the side facing the heat transfer structure, and the height of the heat transfer structure located below the recess is higher than that of the heat transfer structure not located below the recess The height of the heat transfer structure. The water-cooled head described in item 12 of the scope of patent application, wherein the cavity is exposed on the side opposite to the side of the shell facing the heat transfer structure. According to the water-cooling head described in item 12 of the scope of patent application, the communication structure is a channel formed in the housing and connecting one side of the cavity and the periphery of the heat transfer structure. According to the water-cooling head described in item 12 of the scope of patent application, the communication structure is a diversion groove on the shell that penetrates the cavity to the heat absorption space. For the water-cooled head described in item 19 of the scope of patent application, the diversion groove is located above a part of the heat transfer structure. According to the water-cooling head described in item 20 of the scope of patent application, wherein the heat transfer structure is a plurality of fins, and the extension direction of the diversion groove is different from the extension direction of the plurality of fins. The water-cooled head described in item 12 of the scope of patent application, wherein the base around the heat transfer structure is recessed to form a confluence area.

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