Water cooled head

Abstract

The present application provides a water cooling head. The water cooling head comprises a housing formed with a receiving groove; a base combined to the housing to jointly define an action space with the housing, the action space being communicated with the receiving groove; a heat transfer structure arranged inside the base to transfer heat energy generated by a heat source in contact with the outside of the base to a working medium in the action space; and a pump having a stator arranged in the receiving groove.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of heat dissipation, in particular to a water cooling head. BACKGROUND

[0002] According to the modernization needs, computers and various electronic devices are developing rapidly and their performance is constantly improving. However, in this process, the heat dissipation problem brought by high-performance hardware also comes. Generally speaking, computers and various electronic devices usually use heat dissipation elements to dissipate heat, such as using thermal paste or heat dissipation fins to attach to the electronic components to be cooled to absorb heat and dissipate. However, this kind of heat dissipation method has limited effect, so the heat dissipation module using liquid cooling method is developed.

[0003] The existing heat dissipation module using liquid cooling method generally uses cooling liquid to absorb heat, such as connecting the cooling liquid to the electronic components to be cooled. The heated cooling liquid can flow to a lower temperature place to exchange heat. The cooling liquid after heat exchange can flow to the electronic components to be cooled to absorb heat, so as to form a heat dissipation cycle. However, the existing heat dissipation module still has the problem of poor overall heat dissipation efficiency caused by high temperature of the pump in operation and the pump not sucking water.

[0004] Therefore, how to propose a water cooling head that can solve the above problems is one of the urgent problems to be solved in the industry at present. SUMMARY

[0005] The main purpose of the present application is to provide a water cooling head, comprising: a housing, a bottom side of which forms a containing groove; a base combined to the bottom side of the housing to define an action space with the housing, and the action space is communicated with the containing groove; a heat transfer structure arranged inside the base to transfer the heat generated by the heat source in contact with the outside of the base to the working medium in the action space; and a pump having a stator arranged in the containing groove.

[0006] As in the foregoing water cooling head, further comprising an upper cover combined to the top side of the housing to define a water collecting chamber with the housing.

[0007] As in the foregoing water cooling head, the top side of the housing further forms a drain groove, which is communicated with the water collecting chamber and corresponds to the containing groove in position, and wherein the pump further has a rotor arranged in the drain groove.

[0008] As in the foregoing water cooling head, the housing further has at least one flow guide channel, which penetrates the top side and the bottom side of the housing and is spaced from the containing groove or the drain groove to communicate the water collecting chamber and the action space.

[0009] The number of the flow guide channels is two, and one of the flow guide channels is located above the heat transfer structure.

[0010] The shell further has a water inlet channel communicating with the action space and a water outlet channel communicating with the drain groove.

[0011] The bottom of the drain groove has an opening communicating with the action space.

[0012] The rotor has a body, a bottom plate and a magnetic element, the bottom plate is arranged at one end of the body and located at the top of the drain groove, and the magnetic element is sleeved on the body and located between the bottom plate and the bottom of the drain groove.

[0013] The shell further has a water inlet channel communicating with the action space and a water outlet channel communicating with the drain groove.

[0014] The heat transfer structure is a plurality of fins located in the heat absorption space, and the top end of the plurality of fins is abutted by the partition plate.

[0015] The heat transfer structure is a plurality of fins located in the heat absorption space, and the top end of the plurality of fins is abutted by the partition plate.

[0016] The stator contacts the working medium.

[0017] The surface of the stator is coated with a protective layer.

[0018] The material of the protective layer includes epoxy resin, chemical nickel plating or ultraviolet glue.

[0019] The beneficial effects of the present application are that the design of the stator contacting the working medium in the water-cooled head can effectively reduce the overall operating temperature of the pump, thereby improving the service life of the pump. In addition, the water storage space and the water collecting chamber defined in the shell can effectively increase the water storage area of the working medium, avoiding the situation that the pump cannot suck water. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the water-cooled head.

[0021] Figure 2 It is a schematic diagram of the water-cooled head.

[0022] Figure 3 It is a schematic diagram of the water-cooled head.

[0023] Figure 4 Fig. 6 is a lower perspective view of the housing in the water-cooled head of the present application.

[0024] Figure 5 Fig. 7 is a cross-sectional view along the section line A-A. Figure 1

[0025] Fig. 8 is a cross-sectional view along the section line B-B. Figure 6 Figure 1 Fig. 9 is a cross-sectional view along the section line C-C.

[0026] Figure 7 Figure 1 Fig. 10 is a cross-sectional view along the section line D-D.

[0027] Figure 8 Fig. 11 is an overall view of the rotor in the water-cooled head of the present application. Figure 1

[0028] Fig. 12 is an overall view of the water-cooled head of the present application. Figure 9 Figure 1 Fig. 13 is a cross-sectional view along the section line E-E.

[0029] Figure 10 Fig. 14 is a cross-sectional view along the section line F-F.

[0030]

[0031] 1 water-cooled head

[0032] 11 upper cover

[0033] 12 housing

[0034] 121 top side

[0035] 122 bottom side

[0036] 123 accommodation groove

[0037] 124 drain groove

[0038] 1241 opening

[0039] 125, 126 flow guide passage

[0040] 127 water inlet passage

[0041] 128 water outlet passage

[0042] 13 base

[0043] 131 recess

[0044] 14 heat transfer structure

[0045] 15 pump

[0046] 151 stator ​​​​

[0047] 152 rotor

[0048] 1521 body

[0049] 1522 chassis

[0050] 1523 blade

[0051] 1524 magnetic element

[0052] 1525 hollowed portion

[0053] 1526 shaft rod

[0054] 16 partition plate

[0055] 17 working space

[0056] 171 water storage space

[0057] 172 heat absorption space

[0058] 18 water collecting chamber

[0059] 19 connecting passage DETAILED DESCRIPTION

[0060] The present application is described herein with reference to particular embodiments for a particular application. Those of ordinary skill in the art and art thereto will understand that the application is not limited thereto and will encompass any number of variations, modifications and alternative means for implementing the same.

[0061] The water cooling head provided by the present application can be installed in an electronic device such as a computer mainframe or a server. The water cooling head can be filled with a working medium (e.g. a cooling liquid). The working medium can absorb the heat generated by a heat source (e.g. an electronic component such as a chip or a memory). The heated working medium can be transferred to a condensing device for cooling. The cooled working medium can be transferred back to the water cooling head for the next heat absorption and circulation.

[0062] Referring to Figures 1 to 4 the water cooling head 1 of the present application includes an upper cover 11, a housing 12, a base 13, a heat transfer structure 14, a pump 15 and a partition plate 16. The housing 12 has opposite top and bottom sides 121 and 122 (as shown in Figure 3 Figure 4 ​The upper cover 11 is coupled to the top side 121 of the housing 12 to jointly define a water collecting chamber 18 with the housing 12. The top side 121 of the housing 12 is formed with a drain groove 124 which is in communication with the water collecting chamber 18. The bottom side 122 of the housing 12 is formed with a receiving groove 123 which is located corresponding to the drain groove 124. Specifically, the drain groove 124 is in the shape of a cone, while the receiving groove 123 is in the shape of a ring, and the center of the drain groove 124 and the center of the receiving groove 123 are substantially coaxial. The base 13 is coupled to the bottom side 122 of the housing 12 to jointly define an action space 17 with the housing 12, and the receiving groove 123 is in communication with the action space 17 (as shown in FIG. 1). Figure 6

[0063] The housing 12 further has two flow guide channels 125, 126, an inlet water channel 127 and an outlet water channel 128. The flow guide channels 125, 126 pass through the top side 121 and the bottom side 122 of the housing 12 and are spaced apart from the receiving groove 123 or the drain groove 124 to communicate the action space 17 and the water collecting chamber 18. The inlet water channel 127 and the outlet water channel 128 are mainly formed in the same side of the housing 12, but can also be formed in different sides. The inlet water channel 127 is in communication with the action space 17, while the outlet water channel 128 is in communication with the drain groove 124. In addition, the bottom of the drain groove 124 can also have an opening 1241 which can be in communication with the action space 17.

[0064] The inner side of the base 13 is formed with a recess 131. The heat transfer structure 14 is arranged in the recess 131 of the inner side of the base 13, and is specifically a plurality of fins, such as skived fins, or other columnar, sheet-shaped, or even irregularly shaped fins, without being limited thereto. In an embodiment, the heat transfer structure 14 is arranged offset from the center of the recess 131, so that the flow guide channel 125 is located above the heat transfer structure 14, but the flow guide channel 126 is not located directly above the heat transfer structure 14 (as shown in FIG. 1). Figure 7 ​The outer side of the base 13 is used to directly or indirectly contact a heat source, so that the heat generated by the heat source can be transmitted to the working medium in the action space 17 through the fins. In an embodiment, the material of the base 13 can be selected from metal or other materials with good thermal conductivity, which can be a one-piece structure (integrally formed) or a composite structure composed of multiple layers or elements, and the present application is not limited thereto. The pump 15 has a stator 151 and a rotor 152. The stator 151 is arranged in the accommodation groove 123, and the working medium can flow into the accommodation groove 123 to absorb the heat generated by the stator 151. In an embodiment, the stator 151 can contact the working medium, and the present application is not limited thereto. In an embodiment, the surface of the stator 151 is coated with a protective layer (not shown), and the material of the protective layer includes epoxy, chemical nickel plating, or ultraviolet curable adhesive, and the present application is not limited thereto. The rotor 152 is arranged in the drain groove 124.

[0065] Specifically, please refer to Figure 10 The rotor 152 has a body 1521, a bottom plate 1522, a plurality of blades 1523, a magnetic element 1524, a hollow part 1525, and a shaft rod 1526. The shaft rod 1526 penetrates the body 1521, and one end is arranged at the bottom end of the drain groove 124 (adjacent to the opening 1241), so that the body 1521 can rotate around the shaft rod 1526 as the axis. The bottom plate 1522 is arranged at one end of the body 1521 and located at the top of the drain groove 124 to substantially cover the drain groove 124. The plurality of blades 1523 extend outward from the body 1521 and are formed on the bottom plate 1522, the magnetic element 1524 is sleeved on the body 1521 and located between the bottom plate 1522 and the bottom of the drain groove 124, and the hollow part 1525 is arranged at the center of the bottom plate 1522. When the pump 15 is powered on, the body 1521 connected with the magnetic element 1524 can be driven to rotate under the joint action of the stator 151 and the magnetic element 1524, so that the plurality of blades 1523 can guide the working medium to flow.

[0066] The partition plate 16 is arranged between the shell 12 and the base 13 to divide the action space 17 into a water storage space 171 and a heat absorption space 172 (as shown in Figure 6 In detail, the partition plate 16, for example, is a U-shaped structure, which can be clamped in the groove 131 of the base 13 and cover the heat transfer structure 14, specifically, can abut against the top end of the plurality of fins, so that the heat transfer structure 14 is located in the heat absorption space 172. In addition, the partition plate 16 and the shell 12 can jointly define a connecting passage 19, which communicates the water storage space 171 and the heat absorption space 172 and is located away from the pump 15.

[0067] In one embodiment, the heat transfer structure 14 can be located below both the partition 16 and the pump 15, and the fins thereof have different heights, the height of the heat transfer structure 14 located below the pump 15 being lower than the height of the heat transfer structure 14 located below the partition 16, but the present application is not limited thereto.

[0068] The following describes the working of the working medium in the water cooling head 1 of the present application.

[0069] Please refer to Figures 5 to 9 , the working medium enters the water storage space 171 of the action space 17 through the water inlet channel 127 (as arrow A), and then enters the heat absorption space 172 through the connecting channel 19 (as arrow B). At this time, the working medium can first gather in the groove 131 and then flow into the heat transfer structure 14. After that, the working medium can be heated by absorbing heat generated by the heat source when flowing between the plurality of fins of the heat transfer structure 14 (as arrow C). The heated working medium can flow to the accommodation groove 123 and absorb the heat generated by the stator 151. Then, the working medium flows to the water collecting chamber 18 through the flow guide channels 125 and 126 (as arrows D and E), and the rotor 152 can suck the working medium into the water outlet channel 128 (as arrow F) through the hollow part 1525 at the center of the bottom plate 1522. Then, the working medium is sequentially thrown into the water outlet channel 128 (as arrow G) by the driving of the plurality of blades 1523 under the action of centrifugal force, and then discharged from the water cooling head 1. The heated working medium discharged from the water cooling head 1 can be cooled by a condensing device (such as a fan, a water cooling system, etc.). The cooled working medium can enter the water cooling head 1 through the water inlet channel 127 for the next heat dissipation cycle.

[0070] In summary, the design of the stator of the water cooling head of the present application can effectively reduce the overall operating temperature of the pump, thereby prolonging the service life of the pump. In addition, the water storage space and the water collecting chamber are defined in the housing, which can effectively increase the water storage area of the working medium and avoid the situation that the pump cannot suck water. In addition, the working medium flowing through the heat transfer structure is not stored in the space at the end of the heat transfer structure, but is stored in the water collecting chamber above the action space through the flow guide channel, which means that the water storage space for the pump to suck water does not need to be reserved on the base, and the setting area of the heat transfer structure on the base can be maximized, thereby effectively improving the overall heat dissipation efficiency.

[0071] The above embodiments are only illustrative of the technical principles, characteristics and effects of the present application, and are not intended to limit the implementation scope of the present application. Those skilled in the art can modify and change the above embodiments without departing from the spirit and scope of the present application. However, any equivalent modifications and changes made by using the teachings of the present application shall still fall within the scope of the claims of the present application. The protection scope of the present application shall be subject to the claims.

Claims

1. A water cooling head, characterized in that: include: The housing has a receiving groove formed on its bottom side; A base is coupled to the bottom side of the shell to define an action space together with the shell, and the action space is connected to the accommodating groove; a partition plate disposed between the shell and the base; a heat transfer structure disposed inside the base for transferring heat energy generated by a heat source in contact with the outside of the base to the working medium in the working space; and A pump having a stator disposed in the accommodating tank; wherein the baffle and the pump are simultaneously located above the heat transfer structure and are arranged horizontally with respect to each other, and the baffle and the pump are not vertically stacked with each other; The stator contacts the working medium.

2. The water cooling head according to claim 1, wherein: The water cooling head further includes an upper cover coupled to the top side of the shell to define a water collecting chamber together with the shell.

3. The water cooling head according to claim 2, wherein: A drainage groove is also formed on the top side of the shell, which is communicated with the water collecting chamber and whose position corresponds to the accommodating groove, wherein the pump also has a rotor arranged in the drainage groove.

4. The water cooling head according to claim 3, wherein: The shell further has at least one guide channel, which passes through the top and bottom sides of the shell and is spaced apart from the accommodating groove or the drainage groove to connect the water collection chamber and the working space.

5. The water cooling head according to claim 4, wherein: There are two guide channels, and one of the guide channels is located above the heat transfer structure.

6. The water cooling head according to claim 3, wherein: The shell also has a water inlet channel connected to the action space and a water outlet channel connected to the drainage groove.

7. The water cooling head according to claim 3, wherein: The bottom of the drainage trough is provided with an opening communicating with the working space.

8. The water cooling head according to claim 3, wherein: The rotor has a body, a chassis and a magnetic element. The chassis is arranged at one end of the body and located at the top of the drainage groove. The magnetic element is sleeved on the body and located between the chassis and the bottom of the drainage groove.

9. The water cooling head according to claim 1, wherein: The partition is used to separate the action space into a water storage space and a heat absorption space, and together with the shell defines a connecting channel communicating with the water storage space and the heat absorption space.

10. The water cooling head according to claim 9, wherein: The heat transfer structure is a plurality of fins located in the heat absorption space, and the partition is against the top ends of the plurality of fins.

11. The water cooling head according to claim 9, wherein: The height of the heat transfer structure below the pump is lower than the height of the heat transfer structure below the partition.

12. The water cooling head according to claim 1, wherein: The surface of the stator is coated with a protective layer.

13. The water cooling head according to claim 12, wherein: The material of the protective layer includes epoxy resin, chemical nickel plating or ultraviolet glue.

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