Water-cooling heat dissipation assembly of domain controller

Abstract

The utility model discloses a domain controller water-cooling heat dissipation assembly, which comprises a shell and a cover plate, a flow channel groove, a water inlet and a water outlet are formed in the shell, one end of the flow channel groove is communicated with the water inlet, and the other end of the flow channel groove is communicated with the water outlet; the flow channel grooves sequentially comprise the first flow channel groove, the arc-shaped flow channel groove and the second flow channel groove in the fluid flowing direction. In the fluid flowing direction, the bottom of the arc-shaped runner groove is at least sequentially provided with a large arc-shaped baffle and a small arc-shaped baffle, and the bottom of the second runner groove is provided with a plurality of turbulent flow columns which are arranged in a staggered mode; the cover plate covers the flow channel groove in a sealed mode, and the flow channel groove and the cover plate are sealed through the shell to form a flow channel in a surrounding mode. According to the assembly, by designing the arc-shaped baffle plates and the turbulent flow columns in the water cooling flow channels, the heat conduction efficiency of cooling liquid is better improved, a good heat dissipation effect is achieved, temperature rise is reduced, the early failure rate of components is reduced, and the reliability of products is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of water cooling heat dissipation, especially relates to a domain controller water cooling heat dissipation assembly. BACKGROUND

[0002] With the development of the times, the domain controller has been more widely applied. With the gradual increase of the function of the domain controller, high efficiency, high integration and high power density are important directions for the development of the domain controller, which will inevitably cause the domain controller to generate high heat and temperature when in use. However, high temperature can cause damage to the components of the domain controller, thermal aging of materials, cracking of low-melting-point solder balls, falling of solder joints, and increase of mechanical stress between devices. Statistics show that the reliability of electronic components decreases by 10% for every 2℃ increase in temperature, and the service life of electronic components is only one sixth of that when the temperature rises by 25℃. The failure rate of electronic components increases sharply with the increase of temperature. Therefore, researchers have begun to explore more efficient cooling technology, and water cooling technology has emerged as the times require. The basic principle of water cooling technology is to use water as a coolant. Water has a high specific heat capacity and can absorb a large amount of heat while its temperature rises relatively slowly. The coolant circulates in the water cooling system, absorbs heat by direct or indirect contact with the heat-generating components of the domain controller, and then transfers the heat to an external heat sink, which is finally dissipated to the air. However, the cooling efficiency of the traditional single water cooling plate is not high, the temperature rise effect is not obvious enough, and it cannot meet the cooling requirements of the domain controller.

[0003] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a new technical solution. CONTENT OF THE UTILITY MODEL

[0004] To at least solve one of the technical problems existing in the prior art, the utility model provides a domain controller water cooling heat dissipation assembly, which aims to solve the problem of heat dissipation of the domain controller during high-power operation and ensure its stable and reliable operation. The water cooling structure design effectively conducts heat from the mainboard of the domain controller through water cooling, improving the heat dissipation efficiency. Compared with the traditional single water cooling plate, the assembly better increases the heat conduction efficiency of the cooling liquid by designing the arc-shaped baffle and the turbulence column inside the water cooling flow channel, reduces the temperature rise, reduces the early failure rate of components, and greatly improves the reliability of the product. The specific technical solution is as follows:

[0005] The utility model provides a kind of domain controller water cooling heat dissipation assembly, it includes shell and cover plate;

[0006] Flow channel groove, water inlet and water outlet are set on the shell, one end of flow channel groove is communicated with water inlet, and the other end of flow channel groove is communicated with water outlet;

[0007] The flow channel groove comprises a first flow channel groove, an arc-shaped flow channel groove and a second flow channel groove in sequence along the fluid flow direction; the arc-shaped flow channel groove is provided with a large arc-shaped baffle and a small arc-shaped baffle in sequence along the fluid flow direction at the bottom of the arc-shaped flow channel groove; and the second flow channel groove is provided with a plurality of staggered turbulence columns at the bottom of the second flow channel groove.

[0008] The cover plate is sealed and covers the flow channel groove, and the flow channel groove is sealed and surrounded by the shell and the cover plate to form a flow channel.

[0009] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, along the fluid flow direction, the arc direction of the large arc-shaped baffle is consistent with the fluid flow direction.

[0010] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the arc radius of the large arc-shaped baffle is greater than the arc radius of the small arc-shaped baffle.

[0011] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the small arc-shaped baffle comprises a first group of arc-shaped baffles and a second group of arc-shaped baffles, and the first group of arc-shaped baffles and the second group of arc-shaped baffles are arranged alternately in sequence along the fluid flow direction.

[0012] The first group of arc-shaped baffles comprises a plurality of first arc-shaped baffles, and the second group of arc-shaped baffles comprises a plurality of second arc-shaped baffles; and the first arc-shaped baffles and the second arc-shaped baffles are arranged alternately.

[0013] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the arc radius of the first arc-shaped baffle is smaller than the arc radius of the second arc-shaped baffle, the arc opening direction of the first arc-shaped baffle is the same as the fluid flow direction, and the arc opening direction of the second arc-shaped baffle is opposite to the fluid flow direction.

[0014] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the turbulence column is a square turbulence column, and one edge of the square turbulence column faces the fluid flow direction.

[0015] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the inner diameter of the water inlet is smaller than the inner diameter of the water outlet.

[0016] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the arc-shaped flow channel groove is a C-shaped flow channel groove, an S-shaped flow channel groove or a free combination connection of the C-shaped flow channel groove and the S-shaped flow channel groove.

[0017] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the flow channel groove is a U-shaped flow channel groove.

[0018] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the large arc-shaped baffle, the small arc-shaped baffle and the turbulence column are pressure die cast with the shell.

[0019] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the cover plate is sealed and welded on the shell by friction stir welding or high-temperature brazing.

[0020] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the cooling liquid is glycol aqueous solution, cooling liquid containing refrigerant R22 or cooling liquid containing refrigerant R23.

[0021] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the water inlet and the water outlet are connected in communication through the hollow pipe.

[0022] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the shell is an aluminum shell.

[0023] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the cover plate is an aluminum cover plate.

[0024] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the shell is formed by pressure casting, and the cover plate is formed by pressure casting.

[0025] As a preferred scheme of the domain controller water-cooling heat dissipation assembly, the large-arc baffle, the small-arc baffle and the turbulence column in the flow channel groove are integrally pressure cast with the shell.

[0026] Compared with the prior art, the technical scheme of the utility model has at least one or more of the following beneficial effects:

[0027] The multiple sets of arc baffles or turbulence columns arranged in the flow channel can better increase the turbulence effect of the water-cooling system and the flow rate of the cooling liquid, increase the heat conduction efficiency and heat dissipation efficiency of the cooling liquid, reduce the temperature rise, reduce the failure rate of the components, greatly improve the reliability of the product, and ensure the stable and reliable operation of the domain controller.

[0028] The working principle of the device is that when the domain controller works and generates power heat, the cooling liquid enters the U-shaped flow channel from the water inlet of the shell, and the cooling liquid flows out from the water outlet of the shell after passing through the large-arc baffle, the small-arc baffle and the turbulence column, and the heat generated by the domain controller is fully exchanged with the cooling liquid through the internal flow channel design, so that the domain controller has better heat dissipation effect.

[0029] The design of the assembly has the advantages of high heat dissipation efficiency, the water cooling plate can quickly conduct heat from the heat source to the water cooling system, greatly improves the heat dissipation efficiency, achieves good heat dissipation effect, and effectively prevents the domain controller from overheating. The assembly has good stability, can be intelligently adjusted by an external control system, and can automatically adjust the working state of the water cooling system, such as flow, temperature, etc., to maintain the stable operation of the domain controller. The assembly has good reliability, the water cooling plate is made of a heat-conducting material, has good durability and heat conduction performance, can be stably operated for a long time, and reduces the failure rate.

[0030] The inner diameter of the water inlet is smaller than the inner diameter of the water outlet, which plays a mistake-proofing role and reduces the pressure drop of the entire flow channel, reduces the liquid cooling design work of the customer and the overall procurement cost, and is safe to use.

[0031] The shell and the cover plate are made of aluminum metal, which can effectively save the cost of the user compared with the traditional copper material.

[0032] The additional aspects and advantages of the present application will be partially given in the following description, and some will become apparent from the following description or be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme of the present application, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0034] Figure 1 is a schematic diagram of the three-dimensional structure of the domain controller water cooling and heat dissipation assembly described in the present patent;

[0035] Figure 2 is a schematic diagram of the exploded structure of the domain controller water cooling and heat dissipation assembly described in the present patent;

[0036] Figure 3 is Figure 2 a local enlarged structure schematic diagram of the R part in the present application;

[0037] Figure 4 is a schematic diagram of the main view structure of the shell of the domain controller water cooling and heat dissipation assembly described in the present patent.

[0038] Among them, 1 is a shell, 2 is a cover plate, 11 is a flow channel groove, 111 is a first flow channel groove, 112 is an arc-shaped flow channel groove, 113 is a second flow channel groove, 114 is a large arc-shaped baffle, 115 is a small arc-shaped baffle, 116 is a turbulence column, 117 is a first group of arc-shaped baffles, 118 is a second group of arc-shaped baffles, 12 is a water inlet, and 13 is a water outlet. DETAILED DESCRIPTION

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0040] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "provided with," "equipped with," "connected," "installed," "sleeved," "opened," and "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0043] Please refer to Figures 1-4 .like Figures 1-4 As shown, this utility model provides a domain controller water cooling heat dissipation component, which is typically used on domain controllers. Of course, this component can also be used on other heat dissipation devices. The water cooling heat dissipation component includes a housing 1 and a cover plate 2.

[0044] The shell 1 is provided with a flow channel groove 11, a water inlet 12 and a water outlet 13. One end of the flow channel groove 11 is communicated with the water inlet 12, and the other end of the flow channel groove 11 is communicated with the water outlet 13.

[0045] The flow channel groove 11 comprises a first flow channel groove 111, an arc-shaped flow channel groove 112 and a second flow channel groove 113 in sequence along the fluid flow direction. Along the fluid flow direction, the bottom of the arc-shaped flow channel groove 112 is provided with a large arc-shaped baffle 114 and a small arc-shaped baffle 115 in sequence, and the bottom of the second flow channel groove 113 is provided with a plurality of staggered turbulence columns 116.

[0046] The cover plate 2 is sealed and covered on the flow channel groove 11, and the flow channel groove 11 is sealed and enclosed by the shell 1 and the cover plate 2 to form a sealed flow channel.

[0047] The plurality of arc-shaped baffles or turbulence columns arranged in the flow channel can better increase the turbulence effect of the water cooling system and the flow rate of the cooling liquid, increase the heat conduction efficiency and heat dissipation efficiency of the cooling liquid, reduce the temperature rise, reduce the failure rate of the components, and greatly improve the reliability of the product, so as to ensure the stable and reliable operation of the domain controller.

[0048] The working principle of the device is that when the domain controller works and generates power heat, the cooling liquid enters the U-shaped flow channel from the water inlet of the shell, and the cooling liquid flows out from the water outlet of the shell after passing through the large arc-shaped baffle, the small arc-shaped baffle and the turbulence column. Through the internal flow channel design, the heat generated by the domain controller is fully exchanged with the cooling liquid, so that the domain controller has better heat dissipation effect.

[0049] Preferably, the inner diameter of the water inlet 12 is smaller than the inner diameter of the water outlet 13. The inner diameter of the water inlet is set to be smaller than the inner diameter of the water outlet, which plays a role of preventing errors and reducing the pressure drop of the entire flow channel, reduces the liquid cooling design work of the customer and the overall procurement cost, and is safe to use.

[0050] Preferably, the cover plate 2 is sealed and welded on the shell 1. Further preferably, the cover plate 2 is sealed and welded on the shell 1 by friction stir welding or high-temperature brazing. In the example, the shell 1 is an aluminum shell. In the example, the cover plate 2 is an aluminum cover plate. The shell and the cover plate are made of metal aluminum, which can effectively save the cost of the user compared with the traditional copper material.

[0051] Preferably, the water inlet 12 and the water outlet 13 are communicated. In the example, the water inlet 12 and the water outlet 13 can be connected by a hose or other hollow pipe. In the example, the water inlet and the water outlet are arranged on the same side of the shell 1.

[0052] Preferably, the shell 1 is formed by pressure casting. Further preferably, the large-arc baffle 114, the small-arc baffle 115 and the spoiler column 116 are integrally connected with the shell. In the example, the large-arc baffle 114, the small-arc baffle 115 and the spoiler column 116 in the shell 1 are integrally pressure casted with the shell.

[0053] Preferably, the cover plate 2 is formed by pressure casting.

[0054] In the preferred embodiment, as shown in Figures 2-4 the arc direction of the large-arc baffle 114 is basically consistent with the fluid flow direction. Preferably, the large-arc baffle 114 can be provided with one or more, depending on the capacity of the flow channel, the flow rate or other factors. In the example, the large-arc baffle 114 is provided with one. In the example, the large-arc baffles 114 are arranged from the position close to the first flow channel groove. In the example, the large-arc baffle 114 is integrally pressure casted on the bottom of the arc-shaped flow channel groove 112. In the example, the height of the large-arc baffle 114 is basically consistent with the depth of the first flow channel groove.

[0055] In the preferred embodiment, as shown in Figures 2-4 the small-arc baffle 115 includes a first group of arc-shaped baffles 117 and a second group of arc-shaped baffles 118, and the first group of arc-shaped baffles 117 and the second group of arc-shaped baffles 118 are arranged alternately in sequence along the fluid flow direction.

[0056] The first group of arc-shaped baffles 117 includes a plurality of first arc-shaped baffles, and the second group of arc-shaped baffles 118 includes a plurality of second arc-shaped baffles, and the first arc-shaped baffles and the second arc-shaped baffles are arranged alternately. Preferably, the arc radius of the large-arc baffle 114 is greater than the arc radius of the small-arc baffle 115.

[0057] Preferably, the arc radius of the first arc-shaped baffle is smaller than the arc radius of the second arc-shaped baffle, the arc opening direction of the first arc-shaped baffle is the same as the fluid flow direction, and the arc opening direction of the second arc-shaped baffle is opposite to the fluid flow direction. In the example, the arc radius of the first arc-shaped baffle and the second arc-shaped baffle is smaller than the arc radius of the large-arc baffle 114. In the example, the first arc-shaped baffle is a semicircular arc-shaped baffle, and the second arc-shaped baffle is also a semicircular arc-shaped baffle. In the example, the arrangement of the small-arc baffles 115 stops at the position close to the second flow channel groove 113. In the example, the height of the first arc-shaped baffle and the second arc-shaped baffle is basically consistent with the depth of the arc-shaped flow channel groove 112.

[0058] Of course, the present patent is not limited to only large arc baffle and small arc baffle, according to actual needs, one or more other arc baffles or turbulence columns can also be arranged in the arc-shaped flow channel groove to better achieve heat exchange, and the other arc baffles or turbulence columns can be arranged in front of the large arc baffle, behind the small arc baffle, or between the large arc baffle and the small arc baffle.

[0059] In a preferred embodiment, as shown in Figures 2-4 the turbulence column 116 is a square turbulence column, one edge of the square turbulence column is directed to the flow direction of the fluid. Of course, the present patent is not limited to this, but can also be other polygonal turbulence columns, or cylindrical turbulence columns, or elliptical turbulence columns, etc. Preferably, the edge of the square turbulence column is a chamfered edge. In the example, there are multiple square turbulence columns, and the multiple square turbulence columns are arranged staggered. Preferably, the turbulence columns 116 are arranged from a position close to the arc-shaped flow channel groove 112. In the example, the height of the turbulence column 116 is basically the same as the depth of the second flow channel groove 113.

[0060] In a preferred embodiment, the arc-shaped flow channel groove 112 is a C-shaped flow channel groove, an S-shaped flow channel groove, or a free combination of a C-shaped flow channel groove and an S-shaped flow channel groove.

[0061] Preferably, the arc-shaped flow channel groove 112 is a C-shaped flow channel groove. Further preferably, the flow channel groove 11 is a U-shaped flow channel groove.

[0062] Preferably, the flow channel groove 11 is internally provided with a cooling liquid, and the cooling liquid is an ethylene glycol aqueous solution or other high specific heat and high thermal conductivity aqueous solution, etc. In the example, the refrigerant can be any refrigerant, such as different concentrations of ethylene glycol solution, various refrigerants R23 (ultra-low temperature refrigerant trifluoromethane), R22 (difluoromonochloromethane), etc.

[0063] The present patent has simple and novel component structure and better performance. The flow channel uses square heat dissipation columns of the same specification and specific size. When the domain controller needs to load a large power, the turbulence columns and arc baffles in the shell can fully exchange heat between the heat generated and the cooling liquid through the internal flow channel design. Compared with the internal flow channel design of the traditional water cooling plate, the water cooling heat dissipation assembly of the present patent has better heat dissipation performance.

[0064] The design of the present assembly has the advantages of high heat dissipation efficiency. The water cooling plate can quickly conduct heat from the heat source to the water cooling system, greatly improving the heat dissipation efficiency and achieving good heat dissipation effect, effectively preventing the domain controller from overheating. The present assembly has good stability and can be intelligently adjusted by an external control system. The working state of the water cooling system, such as flow, temperature, etc., can be automatically adjusted according to temperature changes, so as to maintain the stable operation of the domain controller. The present assembly has good reliability. The water cooling plate is made of heat-conducting material and has good durability and heat conduction performance, which can be stably operated for a long time and reduce the failure rate.

[0065] It should be noted that all features described above in the above embodiments or in the embodiments can be combined with each other, if not contradictory.

[0066] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "yet another embodiment", "another embodiment", "other embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine different embodiments or examples described in the specification.

[0067] Although the embodiments of the utility model have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the utility model. The person skilled in the art can change, modify and modify the above embodiments within the scope of the utility model.

Claims

1. A domain controller water-cooling heat dissipation assembly, characterized in that, It comprises a shell (1) and a cover plate (2); The shell (1) is provided with a flow channel groove (11), a water inlet (12) and a water outlet (13), one end of the flow channel groove (11) is communicated with the water inlet (12), and the other end of the flow channel groove (11) is communicated with the water outlet (13); The flow channel groove (11) comprises a first flow channel groove (111), an arc-shaped flow channel groove (112) and a second flow channel groove (113) in sequence along the fluid flow direction; along the fluid flow direction, the bottom of the arc-shaped flow channel groove (112) is provided with a large arc-shaped baffle (114) and a small arc-shaped baffle (115) in sequence; the bottom of the second flow channel groove (113) is provided with a plurality of staggered turbulence columns (116); The cover plate (2) is sealed and covered on the flow channel groove (11), and the flow channel groove (11) is sealed and surrounded by the shell (1) and the cover plate (2) to form a flow channel.

2. The domain controller water-cooling heat dissipation assembly according to claim 1, wherein, Along the fluid flow direction, the arc direction of the large arc-shaped baffle (114) is consistent with the fluid flow direction; The arc radius of the large arc-shaped baffle (114) is greater than the arc radius of the small arc-shaped baffle (115).

3. The domain controller water-cooling heat dissipation assembly of claim 1, wherein, The small arc-shaped baffle (115) comprises a first group of arc-shaped baffles (117) and a second group of arc-shaped baffles (118), and the first group of arc-shaped baffles (117) and the second group of arc-shaped baffles (118) are arranged alternately in sequence along the fluid flow direction; The first group of arc-shaped baffles (117) comprises a plurality of first arc-shaped baffles, and the second group of arc-shaped baffles (118) comprises a plurality of second arc-shaped baffles; the first arc-shaped baffles and the second arc-shaped baffles are arranged alternately.

4. The domain controller water-cooling heat dissipation assembly according to claim 3, wherein, The arc radius of the first arc-shaped baffle is smaller than the arc radius of the second arc-shaped baffle; the arc opening direction of the first arc-shaped baffle is the same as the fluid flow direction, and the arc opening direction of the second arc-shaped baffle is opposite to the fluid flow direction.

5. The domain controller water-cooling heat dissipation assembly of claim 1, wherein, The turbulence column (116) is a square turbulence column, one edge of the square turbulence column faces the fluid flow direction; The shell (1) is an aluminum shell, and the cover plate (2) is an aluminum cover plate.

6. The domain controller water-cooled heat dissipation assembly of claim 1, wherein, The arc-shaped flow channel groove (112) is a C-shaped flow channel groove, an S-shaped flow channel groove or a free combination of the C-shaped flow channel groove and the S-shaped flow channel groove; The flow channel groove (11) is a U-shaped flow channel groove.

7. The domain controller water-cooling heat dissipation assembly of claim 1, wherein, The large arc-shaped baffle (114), the small arc-shaped baffle (115) and the turbulence column (116) are pressure die cast with the shell (1).

8. The domain controller water-cooling heat dissipation assembly of claim 1, wherein, The cover plate (2) is sealed and welded on the shell (1) by friction stir welding or high-temperature brazing; The cooling liquid in the flow channel is an ethylene glycol aqueous solution, a cooling liquid containing refrigerant R22 or a cooling liquid containing refrigerant R23.

9. The domain controller water-cooling heat dissipation assembly of claim 1, wherein, The water inlet (12) and the water outlet (13) are connected in communication through a hollow pipe; The inner diameter of the water inlet (12) is smaller than the inner diameter of the water outlet (13).

10. The domain controller water-cooling heat dissipation assembly of claim 1, wherein, The shell (1) is formed by pressure die casting, and the cover plate (2) is formed by pressure die casting.

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