Water cooling head

Abstract

The present invention provides a water cooling head. The water cooling head comprises a shell, a base, a heat transfer structure and a pump. The shell is provided with a chamber. The base is combined with the shell to form an action space separated from the chamber, and the chamber and the action space are connected through a connecting structure so that a working medium flows in the chamber and the action space. The heat transfer structure is arranged on the inner side of the base. The pump is arranged in the action space to drive the working medium in the action space. The water cooling head of the present invention has better heat dissipation performance.

Description

Technical Field

[0001] The invention relates to the field of heat dissipation, and in particular to a water cooling head. Background Art

[0002] In accordance with modern needs, computers and various electronic devices are developing rapidly and their performance is constantly improving. However, in the process, the heat dissipation problem brought by high-performance hardware also comes along. Generally speaking, computers and various electronic devices usually use heat dissipation components to dissipate heat, such as using thermal paste or heat sinks to attach to the electronic components to be dissipated to absorb and dissipate the heat. However, this heat dissipation method has limited effect, so a heat dissipation module using liquid cooling has been developed.

[0003] Existing heat dissipation modules using liquid cooling generally use coolant to absorb heat energy. For example, the coolant is connected to the electronic components to be cooled, and the heated coolant can flow to a lower temperature for heat exchange. After the heat exchange, the coolant can flow to the electronic components to be cooled to absorb heat energy, thus forming a heat dissipation cycle.

[0004] However, when multiple existing heat dissipation modules are connected in series, the coolant often flows out, affecting the overall heat dissipation capacity of the heat dissipation module and the temperature uniformity of the system. In addition, the existing heat dissipation module may stop operating due to pump failure. In addition, the existing heat dissipation module also has the problem of too low water pressure entering the heat dissipation fins.

[0005] Therefore, how to provide a water cooling head that can solve the above problems is one of the issues that the industry needs to solve urgently. Summary of the invention

[0006] The main purpose of the present invention is to provide a water cooling head with better heat dissipation performance.

[0007] The water cooling head of the present invention comprises: a shell, which is provided with a chamber; a base, which is combined with the shell to form an action space separated from the chamber, and the chamber and the action space are connected through a connecting structure so that a working medium can flow in the chamber and the action space; a heat transfer structure, which is arranged on the inner side of the base and is used to transfer the heat energy generated by the heat source in contact with the outer side of the base to the working medium in the action space; and a first pump, which is arranged in the action space to separate the action space into a heat absorption space and a drainage space, and is used to drive the working medium to flow from the heat absorption space to the drainage space.

[0008] The water cooling head as mentioned above further includes a second pump disposed in the chamber, which is used to drive the working medium to flow from the chamber to the heat absorbing space via the connecting structure.

[0009] As mentioned above, the water cooling head further includes a partition plate disposed between the base and the shell, which is used to form the chamber together with the shell, wherein the second pump is disposed on the partition plate.

[0010] As the aforementioned water cooling head, the partition includes a guide groove and the connecting structure. The guide groove is formed on the partition and one end of which is located in the tangent direction of the edge of the second pump. The connecting structure is arranged at the other end of the guide groove and passes through the partition.

[0011] As in the aforementioned water cooling head, the guide groove is formed by a side wall protruding from the surface of the partition plate, or is formed by a groove recessed from the surface of the partition plate.

[0012] As the water-cooled head mentioned above, the partition also includes a joint portion and an axis rod fixing portion for the second pump to be arranged thereon, the axis rod fixing portion is located at the center of the joint portion and is used to fix the axis rod of the second pump, and the joint portion is recessed with a cross-shaped groove to guide the working medium.

[0013] As in the aforementioned water cooling head, an annular sheet is further provided between the second pump and the cross-shaped groove, and a portion of the cross-shaped groove is exposed from the annular sheet and the joint portion.

[0014] As in the aforementioned water-cooling head, the annular sheet and the joint portion are formed as one piece, and an annular Mylar sheet is also provided between the second pump and the shaft rod fixing portion.

[0015] As in the aforementioned water cooling head, the partition is further provided with a retaining wall for isolating the chamber into at least two spaces, and the second pump, the guide groove, the connecting structure, the joint and the shaft fixing portion are simultaneously located in one of the at least two spaces.

[0016] As in the aforementioned water cooling head, the shell further comprises a pump chamber and an annular side wall arranged around the pump chamber, the pump chamber is used to accommodate the second pump, and the annular side wall is used to separate the pump chamber from the chamber and fluidically connect the cross groove and the guide groove after the shell is combined with the partition.

[0017] As the aforementioned water cooling head, the base also includes a joint portion and an axis rod fixing portion on which the first pump is arranged. The axis rod fixing portion is located at the center of the joint portion and is used to fix the axis rod of the first pump. The joint portion is recessed with multiple grooves to guide the working medium.

[0018] As in the aforementioned water cooling head, the plurality of grooves are arranged at equal angles, and an extending direction of one of the plurality of grooves is parallel to an extending direction of the heat transfer structure.

[0019] As in the aforementioned water cooling head, an annular sheet is further provided between the first pump and the plurality of grooves.

[0020] As in the aforementioned water cooling head, the annular sheet and the joint portion are formed as one piece, and the plurality of grooves pass through them, and an annular Mylar sheet is also provided between the first pump and the shaft rod fixing portion.

[0021] The water cooling head as mentioned above further comprises a plurality of channels, one of the plurality of channels is connected to the drainage space, and the other of the plurality of channels is connected to the chamber.

[0022] As in the aforementioned water cooling head, the heat transfer structure is a plurality of fins, and the connecting structure is correspondingly located at one end of the plurality of fins, and the first pump is correspondingly located at the other end of the plurality of fins.

[0023] As in the aforementioned water cooling head, a groove is formed on the inner side of the base corresponding to the periphery of the heat transfer structure, which is used to accommodate the working medium flowing in through the connecting structure.

[0024] The beneficial effect of the present invention is that the water cooling head has a dual pump design, which can not only increase the water inlet pressure of the heat transfer structure, but also can continue to operate and dissipate heat when one pump stops working, thereby reducing the probability of water cooling head failure and improving the heat dissipation performance of the water cooling head. In addition, there is a groove on the base, which lowers the reference surface of the heat transfer structure, and the fins can be closer to the heat source, reducing the thermal resistance of the material and improving the heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1A It is a schematic diagram of the explosion of the water cooling head of the present invention.

[0026] Figure 1B FIG. 1 is an exploded schematic diagram of another embodiment of a water cooling head of the present invention.

[0027] Figure 2A It is a schematic diagram of the combination of the shell and the pump in the water cooling head of the present invention.

[0028] Figure 2B and Figure 2C It is a three-dimensional schematic diagram of the pump in the water cooling head of the present invention from different viewing angles.

[0029] Figure 2D It is a partial cross-sectional schematic diagram of the pump and the partition in the water-cooling head of the present invention.

[0030] Figure 3 and Figure 4 Schematic diagram of the flow direction of the coolant in the water cooling head of the present invention.

[0031] Figure 5 It is a top view of the water cooling head of the present invention.

[0032] FIG. 6A to FIG. 6C They are Figure 5 Schematic diagram of the cross section along the section line A to C.

[0033] Figure 7 It is a schematic diagram of multiple water cooling heads connected in series according to the present invention.

[0034] Figure 8 Schematic diagram of explosion of different embodiments of the water cooling head of the present invention.

[0035] Fig. 9 It is a schematic diagram of the combination of the shell and the partition in the water cooling head of the present invention.

[0036] Fig.10 for Figure 7 Schematic diagram of the flow of coolant in multiple water cooling heads.

[0037] Fig.11 Schematic diagram of explosion of different embodiments of the water cooling head of FIG. 1 .

[0038] The reference numerals are as follows:

[0039] 1. 1': Water cooling head

[0040] 11, 11': Base

[0041] 111, 111': heat transfer structure

[0042] 112, 112': groove

[0043] 113: Shaft rod fixing part

[0044] 114: Joint

[0045] 1151, 1152, 1153, 1151', 1152', 1153': groove

[0046] 12: Partition

[0047] 121, 121': diversion groove

[0048] 122, 122': Opening

[0049] 123: Retaining Wall

[0050] 124, 125, 184: Space

[0051] 126: Shaft rod fixing part

[0052] 127: Joint

[0053] 128: Groove

[0054] 13: Shell

[0055] 131, 132, 133, 134, 131', 132', 133', 134': Channel

[0056] 135: Electromechanical chamber

[0057] 136, 137: Pump chamber

[0058] 138: annular side wall

[0059] 14: Cover

[0060] 161, 162: Ring sheet

[0061] 171, 172: Ring Mylar

[0062] 3: Chamber

[0063] 4: Action Space

[0064] 41: Heat absorbing space

[0065] 42: Drainage space

[0066] 5, 6: Pump

[0067] 51: Circuit board

[0068] 52: first magnetic element

[0069] 53: Fan blade

[0070] 531: Top wall

[0071] 532: Chassis

[0072] 533: Partition wall

[0073] 534: Bushing

[0074] 535: Shaft rod

[0075] 536: Hollow part

[0076] 537: Ribs

[0077] 538: Drainage cavity

[0078] 54: Second magnetic element

[0079] 7: Pipeline. DETAILED DESCRIPTION

[0080] The following describes the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification, and can also implement or apply the present invention by means of other different embodiments.

[0081] The water cooling head provided by the present invention can be installed in electronic devices such as a computer host or a server. The water cooling head can be filled with a working medium (such as a coolant). The working medium can absorb the heat energy generated by a heat source (such as an electronic component such as a chip or a memory). The heated working medium can be transmitted to a condensing device for cooling, and the cooled working medium can be transmitted back to the water cooling head for the next heat absorption and circulation flow.

[0082] Please also see Figure 1A and Figure 2A The water-cooled head 1 of the present invention includes a cover plate 14, a shell 13, a partition 12, a base 11 and pumps 5 and 6. The shell 13 can be used as the main structural member of the water-cooled head 1. The upper part of the shell 13 can be combined with the cover plate 14, the lower part can be combined with the base 11, and the side thereof can be formed with channels 131, 132, 133, and 134. The combination of the shell 13 and the various components can form fixing structures such as screw holes, studs or fasteners at different parts of the shell 13, so as to facilitate the combination of the various components by locking during assembly, but the present invention is not limited to this combination method. It should be noted that Figure 1A The water cooling head 1 of the present invention has four openings (channels 131, 132, 133, 134), but the water cooling head 1 of the present invention may also be as follows Fig.11 The design shown is a three-opening design (channels 131 , 132 , 133 ), but the present invention is not limited thereto.

[0083] In this embodiment, the housing 13 itself can define different chambers in structure, including an electromechanical chamber 135 and pump chambers 136 and 137 (see Fig. 9 ), wherein the electromechanical chamber 135 opens at the top side of the housing 13 and is independent of the flow path of the working medium in the water-cooled head 1, thereby protecting the energized components disposed in the electromechanical chamber 135 and preventing a short circuit from occurring due to the intervention of the working medium. In addition, the pump chambers 136 and 137 open at the bottom side of the housing 13 and are located on the flow path of the working medium in the water-cooled head 1, and are used to respectively accommodate some components of the pumps 5 and 6 to drive the flow of the working medium.

[0084] In this embodiment, the pump 5 and the pump 6 have the same structure. The pump 5 is taken as an example for explanation below, and the structure of the pump 6 is not repeated. 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 135, and the fan blade 53 and the second magnetic element 54 may be arranged in the pump chamber 136 (such as Fig. 9As shown), the power required for the operation of the pump 5 can be provided by the circuit board 51, for example, by a wired connection method using electric wires (not shown), or by connecting a power source by other wireless connection methods such as electromagnetic induction (not shown). In this embodiment, the circuit board 51 and the first magnetic unit 52 are separated from the fan blades 53 and the second magnetic element 54 by the housing 13, but the first magnetic element 52 and the second magnetic element 54 are still coaxially arranged. 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 blades 53. When the pump 5 is powered on, under the joint action of the circuit board 51, the first magnetic element 52 and the second magnetic element 54, the fan blades 53 connected to the second magnetic element 54 can be driven to rotate, and then the working medium can be guided to generate flow.

[0085] In this embodiment, the base 11 is used to absorb heat energy, and its material can be selected from metal or other materials with good thermal conductivity. The base 11 can be a one-piece (integrally formed) structure, or a composite structure composed of multiple layers or multiple components, and the present invention is not limited to this. The outer side of the base 11 (the side away from the shell 13) can be in direct or indirect contact with the heat source, and a heat transfer structure 111 is formed (or can be provided) on the inner side of the base 4 (the side facing the shell 13). After the outer side of the base 11 absorbs the heat energy generated by the heat source, the heat energy can be transferred to the heat transfer structure 111 on the inner side of the base 11, and the heat transfer structure 111 will then transfer the heat energy to the working medium through contact with the working medium.

[0086] In one embodiment, the heat transfer structure 111 of the base 11 may be a skived fin, or other columnar, sheet-shaped, or even irregularly shaped fins, as long as the contact area with the working medium can be increased to allow heat energy to be transferred to the working medium faster. The present invention does not limit the specific structure of the heat transfer structure 111.

[0087] Please refer to FIG. 6A to FIG. 6C When the base 11 is combined with the shell 13 and the partition 12 is disposed between the base 11 and the shell 13, a chamber 3 can be defined between the shell 13 and the partition 12, and the base 11, the partition 12 and the shell 13 can jointly define an action space 4 separated from the chamber 3, and the action space 4 can be filled with a working medium and allow the working medium to flow. In one embodiment, the action space 4 can be formed by the fan blades 53 of the pump 5 (such as the chassis 532, see details). Figure 2B ) is used to separate a heat absorption space 41 and a drainage space 42 without relying on other partition walls or compartments, thereby simplifying the internal structure of the water cooling head 1.

[0088] In this embodiment, the fan blades 53 can directly absorb the working medium from the heat absorption space 41 to the drainage space 42. In addition, the channel 134 is connected to the drainage space 42, so the heated working medium can be transferred to the outside of the water cooling head 1 for cooling.

[0089] The overall structure of the fan blade 53 of the pump 5 in the water cooling head 1 of the present invention is further described below. Figure 2B and Figure 2C . As mentioned above, the working space 4 in the water-cooled head 1 of the present invention is separated into a heat absorption space 41 and a drainage space 42 by the fan blades 53 of the pump 5. Therefore, the fan blades 53 themselves have the dual functions of absorbing the working medium and discharging the working medium. In order to achieve the above functions, the fan blades 53 are arranged in the working space 4 and adjacent to the channel 134, so as to absorb the working medium directly from the heat absorption space 41 to the drainage space 42, and then discharge the working medium from the water-cooled head 1 through the channel 134. The fan blades 53 include a top wall 531, a bottom plate 532, a partition wall 533, a shaft sleeve 534 and a shaft rod 535, and 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 be connected by at least one rib 537 in the hollow portion 536. The chassis 532 is a structure in the fan blade 53 that mainly divides the working space 4 into the heat absorption space 41 and the drainage space 42, and the heat absorption space 41 and the drainage space 42 are fluidly coupled by means of the hollow portion 536, that is, the working medium can enter the drainage space 42 from the heat absorption space 41 through the hollow portion 536. The top wall 531 and the chassis 532 are arranged at intervals, and a plurality of partition walls 533 are connected between the two, so that a plurality of drainage chambers 538 can be separated. When the working medium is transferred upward from the heat absorption space 41 through the hollow portion 536 to the drainage space 42, the working medium will first touch the top wall 531 and then turn to move to each drainage chamber 538, and then due to the action of centrifugal force, the working medium in each drainage chamber 538 is thrown into the channel 134 in sequence and then discharged from the water cooling head 1. The top wall 531 of the fan blade 53 not only has the guiding function of changing the flow direction, but also can prevent the partition wall 533 from directly touching the housing 13, thereby reducing the chance of wear.

[0090] In the present embodiment, the fan blade 53 is driven by the electromagnetic induction between the first magnetic element 52 and the second magnetic element 54, and is not driven by the shaft rod 535, so there is no linkage between the fan blade 53 and the shaft rod 535. 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 shell 13 and cause wear during rotation, a hollow sleeve 534 may be provided inside the fan blade 53, on which the shaft rod 535 can be sleeved. In addition, in order to fix the shaft rod 535, one end of the shaft rod 535 can be accommodated in the blind hole of the pump chamber 136 at the top of the working space 4 (that is, the inner side of the shell 13), and the other end is provided on the shaft rod fixing portion 113 (such as a blind hole) of the base 11 located at the center of the joint portion 114, so that the pump 5 as a whole can be located on the joint portion 114 of the base 11.

[0091] 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 is coaxially arranged with the shaft sleeve 534 and the shaft rod 535, and is located between the shaft sleeve 534 and the shaft rod 535. The material of the shaft tube can be selected from a wear-resistant or more wear-resistant material, so as to reduce the wear of the fan blade 53 and the shaft rod 535 during relative rotation, thereby extending the life of the fan blade 53. In another embodiment, an annular Mylar sheet 172 can be further provided between the fan blade 53 of the pump 5 and the shaft rod fixing portion 113. The material of the annular Mylar sheet 172 can be selected from a wear-resistant or more wear-resistant material, so as to reduce the wear of the shaft rod 535 of the fan blade 53 during relative rotation on the shaft rod fixing portion 113, thereby extending the life of the shaft rod 535.

[0092] In one embodiment, a groove 112 may be formed on the inner side of the base 11, so that the heat transfer structure 111 may be formed in the groove 112, and the groove 112 is simultaneously located around the heat transfer structure 111, and the joint 114 may also be located at one end of the heat transfer structure 111 in the groove 112. The groove 112 may be used to accommodate the working medium. In this embodiment, the joint 114 itself may be recessed with a plurality of grooves 1151, 1152, 1153, and the grooves 1151, 1152, 1153 are used to guide the working medium. Specifically, the plurality of grooves 1151, 1152, 1153 may be arranged at equal angles (e.g., 120 degrees), and the extension direction of the groove 1151 may be parallel to the extension direction of the fins of the heat transfer structure 111, so that the groove 1151 may directly receive the working medium flowing from the heat transfer structure 111. In addition, the grooves 1152 and 1153 can be used to receive the working medium that has not entered the groove 1151 but is still in the groove 112 .

[0093] In one embodiment, an annular sheet 162 may be provided between the pump 5 and the plurality of grooves 1151, 1152, 1153 of the joint 114. The annular sheet 162 can guide the working medium into the plurality of grooves 1151, 1152, 1153 and ensure that the working medium is transferred upward to the drainage space 42 by the pump 5 through the hollow portion 536 only when the working medium flows to the center of the joint 114, so as to avoid the backflow of the working medium and enable the working medium to enter the pump 5 more concentratedly. Figure 1B As shown, the annular sheet 162 can be integrally formed with the joint portion 114 , and a plurality of grooves 1151 , 1152 , 1153 pass through the joint portion 114 , but the present invention does not limit the implementation type of the joint portion 114 .

[0094] In this embodiment, a partition 12 may be provided between the housing 13 and the base 11, and the partition 12 and the housing 13 may form a chamber 3 (such as Figure 6B , Figure 6C ), and the chamber 3 can be physically separated from the action space 4, and the chamber 3 and the action space 4 are connected through a connecting structure on the partition 12, and the connecting structure can be, for example, an opening 122 formed on the partition 12. The chamber 3 can be connected with the channels 131, 132, and 133, so that the working medium flows into the chamber 3 through the channels 131, 132, and 133, and the supply of the working medium in the water-cooled head 1 is not interrupted.

[0095] In one embodiment, a guide groove 121, a joint 127, and an axial rod fixing portion 126 located at the center of the joint 127 may be formed on the surface of the partition 12 facing the chamber 3. The pump 6 may be accommodated in the pump chamber 137 of the housing 13 and arranged on the joint 127 and the axial rod fixing portion 126 of the partition 12, and the guide groove 121 is in the shape of an elongated strip, one end of which is located in the tangential direction of the edge of the pump 6, and the other end is connected to the connecting structure (i.e., the opening 122), and the opening 122 passes through the partition 12. The pump 6 is arranged in the chamber 3 to drive the working medium to flow from the chamber 3 through the opening 122 to the heat absorption space 41 between the base 11 and the partition 12.

[0096] In one embodiment, the guide groove 121 may be a long strip groove formed by a protruding side wall of the surface of the partition 12. In another embodiment, the guide groove 121 may also be a long strip groove formed by a recessed groove on the surface of the partition 12. The present invention does not limit the implementation of the guide groove 121 in this way, as long as it is ensured that when the working medium flows into the guide groove 121, it will only flow to the heat absorption space 41 through the opening 122 and will not flow into the chamber 3 again.

[0097] In one embodiment, the shaft rod fixing portion 126 (e.g., a blind hole) is used to fix one end of the shaft rod of the pump 6, and the other end of the shaft rod of the pump 6 is disposed in the blind hole in the pump chamber 137, so that the pump 6 as a whole can be located on the joint portion 127 of the partition 12. In addition, the joint portion 127 can be recessed with a groove 128 (e.g., a cross-shaped groove) to guide the working medium, and an annular Mylar sheet 171 can be provided between the pump 6 and the shaft rod fixing portion 126, and an annular sheet 161 can be provided between the pump 6 and the groove 128. The functions of the annular Mylar sheet 171 and the annular sheet 161 are the same as those of the aforementioned annular Mylar sheet 172 and the annular sheet 162, and are not described in detail here.

[0098] In one embodiment, if Figure 1B As shown, the annular sheet 161 can be integrally formed with the joint portion 127, and the groove 128 passes through the joint portion 127. In this embodiment, regardless of the embodiment of the annular sheet 161 and the joint portion 127, a portion of the groove 128 is exposed outside the annular sheet 161 (such as Figure 2D As shown) and the joint 127 (as shown Figure 1A As shown), the working medium flows in, and its purpose is to limit the working fluid to flow into the pump 6 only through the groove 128, and cannot flow into the pump 6 through other ways. In addition, the annular sheet 161 can also prevent the working medium from flowing back, so that the working medium can enter the pump 6 more concentratedly.

[0099] In one embodiment, the material of the annular sheets 161 and 162 can be plastic or metal.

[0100] In another embodiment, if Fig. 9 As shown, an annular side wall 138 may be provided around the pump chamber 137 of the shell 13. After the shell 13 is combined with the partition 12, the annular side wall 138 can separate the pump chamber 137 from the chamber 3, so that the working medium can only flow into the pump chamber 137 through the groove 128 and then flow to the guide groove 121 under the drive of the pump 6, and cannot flow into the pump chamber 137 through other means.

[0101] Please also see Figure 3 , Figure 4 , Figure 5 , Figures 6A to 6C, to illustrate the working principle of the water-cooled head 1 of the present invention. The working medium entering the water-cooled head 1 can flow into the chamber 3 from the channels 131, 132, and 133 along the direction of arrow A. In one embodiment, only one of the channels 131, 132, and 133 can be selected to flow into the working medium, or multiple channels 131, 132, and 133 can be selected to flow into the working medium. The present invention is not limited to this, and the channels that do not flow into the working medium can be closed. Afterwards, the working medium flowing into the chamber 3 can flow into the pump 6 along the direction of arrow B through the groove 128, and by driving the pump 6, the working medium is guided from the pump 6 along the direction of arrow C to the guide groove 121. Then, the working medium can flow into the heat absorption space 41 through the opening 122 along the direction of arrow D and reach the groove 112 of the base 11. Afterwards, the working medium passes through the heat transfer structure 111 along the direction of arrow E to absorb the heat energy absorbed by the heat transfer structure 111 and then flows into the grooves 1151, 1152, and 1153 along the direction of arrow F. Finally, driven by the pump 5, the working medium is sucked from the heat absorption space 41 to the drainage space 42 by the pump 5 along the direction of arrow G, and is discharged from the channel 134 connected to the drainage space 42 along the direction of arrow H (the tangent direction of the edge of the pump 5) to the outside of the water cooling head 1 for further cooling.

[0102] See also Figures 7 to 9 In other embodiments of the present invention, the two water cooling heads 1 and 1' can be connected in series through a pipe 7, wherein the structural features of the water cooling head 1' are the same as those in the above-mentioned embodiments. Figure 1A The structural features of the water cooling head 1 are the same as those of the water cooling head 1, which will not be described in detail here. Only the differences are described below.

[0103] Compared with the above-mentioned embodiment, the water cooling head 1 of this embodiment is different in that a retaining wall 123 is further provided on the partition plate 12, and the retaining wall 123 can separate the chamber 3 into mutually unconnected spaces 124 and 125, and the pump 6, the guide groove 121, the opening 122, the joint 127 and the shaft rod fixing portion 126 are simultaneously located in the space 125. In addition, the retaining wall 123 can extend to one side of the guide groove 121 and be formed integrally therewith.

[0104] Please also refer to Fig.10, by the design of the baffle 12 of the water-cooled head 1 provided with a retaining wall 123, after the working medium flows from the channel 131 into the space 124 of the water-cooled head 1 along the direction of arrow A, it will not be affected by the pump 6, and can flow out of the water-cooled head 1 from the channel 132 along the direction of arrow A, and flow into the water-cooled head 1' from the channel 131' along the direction of arrow B through the pipe 7, at this time, the channels 132' and 133' can be closed. Then, the working medium can flow into the pump 6' along the direction of arrow C, and by the driving of the pump 6', the working medium is guided into the guide groove 121', and flows into the groove 112' (arrow D direction) through the opening 122'. After that, the working medium passes through the heat transfer structure 111' along the direction of arrow E, absorbs the heat energy absorbed by the heat transfer structure 111', and then flows into the grooves 1151', 1152', and 1153' along the direction of arrow F. By driving the pump 5', the working medium will be sucked upward along the arrow G direction, and discharged from the channel 134' to the outside of the water-cooled head 1' along the arrow H direction, and return to the water-cooled head 1 through the pipe 7. Then, the working medium can flow from the channel 133 to the space 125 along the arrow I direction, and flow into the pump 6 along the arrow J direction. By driving the pump 6, the working medium will flow into the guide groove 121 along the arrow K direction, and reach the groove 112 along the arrow L direction through the opening 122. After that, the working medium passes through the inside of the heat transfer structure 111 along the arrow M direction to absorb the heat energy absorbed by the heat transfer structure 111, and then flows into the grooves 1151, 1152, and 1153 along the arrow N direction. Finally, by driving the pump 5, the working medium will be sucked upward along the arrow O direction, and discharged from the channel 134 to the outside of the water-cooled head 1 along the arrow P direction for further cooling.

[0105] In summary, since the water-cooled head of the present invention has a dual-pump design in some embodiments, in addition to increasing the water inlet pressure of the heat transfer structure, when one of the pumps stops operating, the other pump can continue to operate to dissipate heat, thereby reducing the probability of failure of the water-cooled head and improving the heat dissipation performance of the water-cooled head. In addition, there is a groove on the base, which lowers the reference plane of the heat transfer structure, and the fins can be closer to the heat source, thereby reducing the thermal resistance of the material and improving the heat transfer efficiency. When the water-cooled head of the present invention is connected in series, the partition has a retaining wall or a closed pipeline design, which can further correctly control the flow direction of the coolant. In addition, the water-cooled head of the present invention also optimizes the water inlet pressure of the heat transfer structure to prevent the entire water-cooled head from stopping operating when the pump fails, and the problem of a large distance between the heat source and the heat dissipation fins.

[0106] The above embodiments are only used 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 modify and change the above embodiments without violating the spirit and scope of the present invention. However, any equivalent modifications and changes made by using the teachings of the present invention should still be covered by the scope of the claims. The scope of protection of the present invention should be as listed in the claims.

Claims

1. A water cooling head, characterized in that: include: a housing having a chamber; A base, which is combined with the shell to form an action space separated from the chamber, and connects the chamber and the action space through a connecting structure so that the working medium flows in the chamber and the action space; A heat transfer structure is disposed on the inner side of the base and is used to transfer heat energy generated by a heat source in contact with the outer side of the base to the working medium in the action space; A first pump is disposed in the action space to divide the action space into a heat absorption space and a drainage space, and is used to drive the working medium to flow from the heat absorption space to the drainage space; A second pump is disposed in the chamber and is used to drive the working medium to flow from the chamber to the heat absorbing space via the communicating structure; as well as A partition is arranged between the base and the shell to form the chamber together with the shell, wherein the second pump is arranged on the partition.

2. The water cooling head according to claim 1, characterized in that: The partition includes a guide groove and the connecting structure. The guide groove is formed on the partition and one end of the guide groove is located in the tangent direction of the edge of the second pump. The connecting structure is arranged at the other end of the guide groove and passes through the partition.

3. The water cooling head according to claim 2, characterized in that: The guide groove is formed by a side wall protruding from the surface of the partition plate, or by a groove recessed from the surface of the partition plate.

4. The water cooling head according to claim 2, characterized in that: The partition also includes a joint portion and an axial rod fixing portion on which the second pump is arranged. The axial rod fixing portion is located at the center of the joint portion and is used to fix the axial rod of the second pump. The joint portion is recessed with a cross-shaped groove to guide the working medium.

5. The water cooling head according to claim 4, characterized in that: An annular sheet is further arranged between the second pump and the cross-shaped groove, and a portion of the cross-shaped groove is exposed from the annular sheet and the joint portion.

6. The water cooling head according to claim 5, characterized in that: The annular sheet and the joint portion are formed as one piece, and an annular Mylar sheet is also provided between the second pump and the shaft rod fixing portion.

7. The water cooling head according to claim 4, characterized in that: The partition is also provided with a retaining wall for isolating the chamber into at least two spaces, and the second pump, the guide groove, the connecting structure, the joint and the shaft rod fixing part are simultaneously located in one of the at least two spaces.

8. The water cooling head according to claim 4, characterized in that: The housing also includes a pump chamber and an annular side wall arranged around the pump chamber. The pump chamber is used to accommodate the second pump. The annular side wall is used to separate the pump chamber from the chamber and fluidically connect the cross groove and the guide groove after the housing is combined with the partition.

9. The water cooling head according to claim 1, characterized in that: The base also includes a joint portion and an axial rod fixing portion on which the first pump is arranged. The axial rod fixing portion is located at the center of the joint portion and is used to fix the axial rod of the first pump. The joint portion is recessed with a plurality of grooves to guide the working medium.

10. The water cooling head according to claim 9, characterized in that: The plurality of grooves are arranged at equal angles, and an extending direction of one of the plurality of grooves is parallel to an extending direction of the heat transfer structure.

11. The water cooling head according to claim 9, characterized in that: An annular sheet is also provided between the first pump and the plurality of grooves.

12. The water cooling head according to claim 11, characterized in that: The annular sheet and the joint portion are formed as one piece, and the plurality of grooves pass through the annular sheet, and an annular Mylar sheet is also provided between the first pump and the shaft rod fixing portion.

13. The water cooling head according to claim 1, characterized in that: The water cooling head further includes a plurality of channels, one of which is connected to the drainage space, and the other of which is connected to the chamber.

14. The water cooling head according to claim 1, characterized in that: The heat transfer structure is a plurality of fins, and the communication structure is correspondingly located at one end of the plurality of fins, and the first pump is correspondingly located at the other end of the plurality of fins.

15. The water cooling head according to claim 1, characterized in that: A groove is formed on the inner side of the base corresponding to the periphery of the heat transfer structure, and is used to accommodate the working medium passing through the communication structure.

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