Manufacturing method of water segregator, water segregator, liquid cooling heat dissipation device and electronic equipment

Abstract

The invention provides a manufacturing method of a water segregator, the water segregator, a liquid cooling heat dissipation device and electronic equipment. The manufacturing method of the water segregator comprises the steps that a main body blank of the water segregator is obtained in a precision casting mode, a flow channel used for conveying liquid is formed in the main body blank, and a plurality of first hole parts and at least one second hole part which are communicated with the flow channel are formed in the peripheral side of the main body blank; part or all of the multiple first hole parts are used for being manufactured into a plurality of first pipeline connectors after the machining allowance is removed, and part or all of the at least one second hole part is used for being manufactured into at least one second pipeline connector after the machining allowance is removed; the main body blank is subjected to rough machining, the main body blank subjected to rough machining is welded to the end covers on the two sides, and a main body welding part is obtained; and the main body welding part is subjected to finish machining, the water segregator main body obtained after finish machining is inspected, and the water segregator meeting the preset inspection requirement is obtained. The number of welding parts can be reduced, and the reliability can be improved.

Description

Technical Field

[0001] The present application relates to the field of heat dissipation technology, and in particular to a method for manufacturing a water divider, a water divider, a liquid cooling device and an electronic device. Background Art

[0002] With the continuous upgrading of servers, more and more electronic components are integrated inside the servers, and the heat generated by the servers when working is also increasing, and the heat dissipation requirements of the servers are also increasing. Liquid cooling has gradually become the mainstream heat dissipation mode of servers due to better heat dissipation effect and lower noise. Especially with the emergence of liquid-cooled high-speed serial computer expansion bus graphics processors, liquid cooling has been favored in servers. The core design of the server liquid cooling architecture lies in the water distributor. At present, the water distributor is usually processed by raw material square steel pipe + welding (such as brazing, argon arc welding), but this method has the problems of low reliability, high cost, and unsuitability for mass production. Summary of the invention

[0003] The present application provides a method for manufacturing a water separator, a water separator, a liquid cooling device and an electronic device, which are helpful to solve the problem that the existing processing method of the water separator has low reliability and is not suitable for mass production. The various aspects involved in the present application are introduced below.

[0004] In the first aspect, the present application provides a method for manufacturing a water divider, comprising: obtaining a main body blank of the water divider by precision casting, the main body blank having a flow channel for conveying liquid inside, the main body blank having a plurality of first hole portions and at least one second hole portion connected to the flow channel on the circumference, and some or all of the plurality of first hole portions are used to be made into a plurality of first pipeline interfaces after removing machining allowances, and some or all of the at least one second hole portion are used to be made into at least one second pipeline interface after removing machining allowances; performing rough machining on the main body blank, welding the rough-machined main body blank to both side end covers to obtain a main body welded part; performing fine machining on the main body welded part to obtain a water divider main body having the plurality of first pipeline interfaces and the at least one second pipeline interface, and inspecting the finely machined water divider main body to obtain the water divider that meets preset inspection requirements.

[0005] In the second aspect, the present application provides a water divider manufactured by the manufacturing method of the water divider as described in the first aspect, the water divider includes a water divider body, the water divider body is provided with a main liquid inlet joint and at least one first liquid outlet joint connected by a first flow channel, and a main liquid outlet joint and at least one first liquid return joint connected by a second flow channel.

[0006] In a third aspect, the present application provides a liquid-cooled heat dissipation device, comprising: a water distributor as described in the second aspect; a liquid cooling component, provided with a flow channel extending along a preset direction, and at least one liquid inlet port and at least one liquid outlet port, the liquid cooling component being used to thermally contact a heating element in an electronic device to dissipate heat from the heating element; at least one liquid inlet port of the liquid cooling component being respectively connected to at least one first liquid outlet connector of the water distributor, and at least one liquid outlet port of the liquid cooling component being respectively connected to at least one first liquid return connector of the water distributor.

[0007] In a fourth aspect, the present application provides an electronic device, comprising the liquid cooling device as described in the third aspect.

[0008] The embodiment of the present application adopts the precision casting method, which can ensure the basic accuracy of the main body blank of the water distributor. The wall thickness of the main body blank pipe fittings can be set independently as needed. The main body blank can meet the requirements of directly machining the pipeline interface, without having to machine the pipeline interface on the basis of welding the main pipe and the reinforcement plate. Therefore, the embodiment of the present application can reduce the number of welded parts, reduce the number of welding surfaces, and reduce the welding slag residue in the inner cavity, which helps to reduce the processing procedures, simplify the production process, improve the yield rate and reliability, and is suitable for mass production, improve production efficiency and save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in describing the embodiments of the present application are briefly introduced below.

[0010] Figure 1 It is a schematic diagram of a water distributor realized by square steel pipe + welding method.

[0011] Figure 2 It is a schematic flow chart of a method for manufacturing a water separator provided in an embodiment of the present application.

[0012] Figure 3a-Figure 3b It is a schematic diagram of a lost wax mold and a wax model.

[0013] Figure 4 yes Figure 2 A schematic diagram of precision casting mold flow analysis in step S210 of the manufacturing method is shown.

[0014] Figure 5 yes Figure 2 A schematic flow chart of a possible implementation of the manufacturing method shown.

[0015] Figure 6 is based on Figure 5 An exploded schematic diagram of a water divider manufactured by the manufacturing method shown.

[0016] Figure 7yes Figure 5 A schematic diagram of an X-ray inspection in step S504 in the manufacturing method is shown.

[0017] Figure 8 yes Figure 5 A possible schematic diagram of step S509 in the manufacturing method is shown.

[0018] Fig. 9 yes Figure 5 A possible schematic diagram of step S512 in the manufacturing method is shown.

[0019] Fig.10 It is a schematic diagram of the composition of a liquid cooling heat dissipation device provided in an embodiment of the present application.

[0020] Fig.11 It is a schematic diagram of a component unit / partial component unit of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The same or similar reference numerals are used in the drawings to represent the same or similar modules. It should be understood that the drawings are only schematic, and the protection scope of the present application is not limited thereto.

[0022] First, the application scenarios and related professional terms involved in the embodiments of the present application are introduced.

[0023] Electronic devices generate a lot of heat during operation. If this heat cannot be removed in time, it will affect the service life of the electronic devices and even burn out the electronic components. As the integration of electronic components becomes higher and higher, the heat dissipation demand of electronic devices is also increasing. For example, with the continuous upgrading of servers, more and more electronic components are integrated inside the servers, and the heat generated by the servers when they are working is also increasing, and the heat dissipation demand of the servers is also increasing. Common heat dissipation modes include air cooling and liquid cooling. Among them, liquid cooling has gradually become the mainstream heat dissipation mode of servers due to better heat dissipation effect and lower noise.

[0024] Especially after many manufacturers launched liquid-cooled high-speed PCIE (peripheral component interconnect express) graphics processing unit (GPU) cards, PCIE GPU servers generate more heat per unit area, and liquid cooling is favored in servers, making liquid cooling design more difficult. For example, if the size of the liquid-cooled radiator is designed to be large, it will cause structural interference between the radiator and large-size PCIE expansion cards such as GPUs. The core design of the liquid-cooled PCIE GPU server cooling architecture lies in the design of the water distributor. In addition to meeting the heat dissipation requirements, the reliability, mass production, and low cost of the water distributor are also core issues.

[0025] A manifold is a water distribution and collection device used to connect the supply and return water of each heating pipe in the water system. According to the inlet and return water, it can be divided into a manifold (or water distributor) and a manifold, so a manifold is also called a manifold, commonly known as a water distributor or a liquid distributor.

[0026] At present, the water divider is usually produced by processing the raw material square steel pipe + welding (such as brazing, argon arc welding). Figure 1 This is a schematic diagram of a water distributor using square steel pipes and welding. Figure 1 As shown, the water distributor usually includes multiple pipeline interfaces, which need to be processed by welding multiple steel ring welded parts and square steel pipes. It has the characteristics of many welded parts, many welds, and many processing procedures. This method has the following disadvantages: there are many welded parts, and there is currently no efficient welding quality detection method, so the welding quality is difficult to control; there are many welds, and there may be welding slag remaining in the inner cavity, which is easy to block the pipeline after erosion and falling; there are many processing procedures, and the cost remains high. It can be seen that this method has the problems of low reliability, high cost, and is not suitable for mass production.

[0027] Therefore, it is necessary to design a technical solution for a water divider that is suitable for mass production, has high reliability and low cost.

[0028] Based on this, the present application embodiment proposes a method for manufacturing a water separator. Figure 2 The manufacturing method of the water separator of the embodiment of the present application is described in detail. Figure 2 As shown, the manufacturing method of the water separator in the embodiment of the present application may mainly include steps S210 to S230, and these steps are described in detail below.

[0029] It should be pointed out that the size of the serial numbers of the steps in the embodiments of the present application does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0030] In step S210, a main body blank of a water distributor is obtained by precision casting, wherein the main body blank has a flow channel for conveying liquid inside, and the circumference of the main body blank has a plurality of first holes and at least one second hole connected to the flow channel. Part or all of the plurality of first holes are used to be made into a plurality of first pipeline interfaces after removing machining allowances, and part or all of the at least one second hole is used to be made into at least one second pipeline interface after removing machining allowances.

[0031] Precision casting can include: metal injection molding, die casting, investment casting and other methods. Investment casting is also called lost wax method (LWM). It uses fusible materials (such as wax or plastic) to make a fusible model (referred to as investment mold), and coats it with several layers of special refractory coatings. After drying and hardening to form an integral shell; then use steam or hot water to melt the model from the shell, and then place the shell in a sand box, and fill it with dry sand molding around it. Finally, the mold is placed in a roasting furnace and roasted at high temperature. After the mold or shell is roasted, molten metal is poured into it to obtain a casting. Investment casting can accurately reproduce complex shapes and details, and is suitable for manufacturing high-precision, high-requirement, high-temperature resistant, and difficult-to-process parts.

[0032] In some implementations, the precision casting may be investment casting, which uses investment casting (lost wax method) to obtain the main body blank of the water divider, and can accurately replicate the complex shape and details of the water divider.

[0033] Figure 3a This is a schematic diagram of a lost wax mold. Figure 3b This is a schematic diagram of a wax model. Figure 3a As shown, this lost wax mold can make shell molds and core molds of water dividers in batches. Molten wax is injected, and the shell and core of the water divider are made after the wax solidifies; then the wax mold is coated with special materials, air-dried and baked, and the shell mold of the water divider required for precision casting is obtained after the wax mold is melted. The molten metal liquid is injected into the shell mold, and the main blank casting of the water divider is obtained after solidification.

[0034] The main body blank of the water divider can be a rectangular tube, a square tube, a round tube, or a pipe of other specific shapes, which is not limited in the embodiments of the present application. Usually, the flow channel inside the main body blank is mostly a curved surface with a smooth inner surface, which helps to reduce fluid resistance. For example, the cross-sectional outer contour of the main body blank can be rectangular, and the cross-sectional contour of the flow channel can be rectangular or circular. The rectangular outer contour is convenient for machining and fixing, and the circular flow channel helps to reduce fluid resistance.

[0035] The material of the main body blank can be carbon steel, stainless steel, aluminum alloy, etc. Stainless steel can be, for example, SUS202, SUS304, SUS316L, etc.

[0036] In some implementations, the specifications and dimensions of the first hole portion and the second hole portion may be the same, and the specifications and dimensions of the first pipeline interface may be the same as the specifications and dimensions of the second pipeline interface.

[0037] In other specific implementations, the specifications and sizes of the first hole portion and the second hole portion may be different, such as the inner diameter size of the first hole portion is smaller than the inner diameter size of the second hole portion, and the specifications and sizes of the first pipeline interface are smaller than the specifications and sizes of the second pipeline interface. Usually, a water distribution pipe (or water distributor) may include a main water supply port (main water inlet, main liquid inlet) and multiple water outlets, and the size of the main water supply port is larger than the size of the water outlet; a water collection pipe (or water collection device) may include a main water outlet (main liquid outlet) and multiple water return ports, and the size of the main water outlet is larger than the size of the water return port. For example, when the main body blank is used to make a water distribution pipe, multiple first pipeline interfaces can be used as multiple water outlets, and the second pipeline interface can be used as the main water supply port. The specifications and sizes of the first pipeline interface are smaller than or equal to the specifications and sizes of the second pipeline interface. For example, the specifications and sizes of the first pipeline interface may be DN25, DN32, DN40, DN50, etc., and the specifications and sizes of the second pipeline interface may be DN50, DN75, DN100, DN125, etc. For another example, when the main body blank is used to make a water collecting pipe, multiple first pipe interfaces can be used as multiple water return ports, and the second pipe interface can be used as a main water outlet, and the specification size of the first pipe interface is smaller than the specification size of the second pipe interface.

[0038] The first pipe interface and the second pipe interface can be internal joints or external joints. During installation, the water divider is usually a fixed part, and the first pipe interface and the second pipe interface can be internal joints. The internal joint protrudes from the outer surface of the water divider by a small size, and the connecting pipe end is an external joint, which is convenient for the disassembly and assembly of the movable connecting pipe and reduces the occupied space.

[0039] Standard (such as national standard) square tubes, rectangular tubes or round steel tubes with small outer diameters usually have small wall thickness, while standard square tubes or round steel tubes with large wall thickness usually have large outer diameters and large unit weight. Therefore, it is difficult to select suitable tubes for the main body of the manifold in the related art. Usually, standard square tubes, rectangular tubes or round steel tubes with small wall thickness and suitable outer diameters are selected as the main body of the manifold, and after being welded with multiple reinforcement plates (such as steel rings), multiple pipeline interfaces are machined at the multiple reinforcement plates.

[0040] Different from the standard pipe + welding processing method of the related art, the embodiment of the present application adopts the precision casting method, which can ensure the basic accuracy of the main blank of the water distributor. The wall thickness of the main blank tube body can be set independently according to the needs, and the wall thickness can meet the requirements of directly machining the pipeline interface, without having to machine multiple pipeline interfaces on the basis of welding the main pipe with multiple reinforcing plates (such as steel rings). In other words, the main blank has a processing allowance at multiple hole portions (such as the first hole portion and the second hole portion), and the first hole portion can be made into a first pipeline interface after the processing allowance is removed, and the second hole portion can be made into a second pipeline interface after the processing allowance is removed. The processing allowance can refer to the allowance along the depth direction of the hole and the allowance along the aperture direction. Therefore, the embodiment of the present application can reduce the number of welded parts, reduce the number of welding surfaces, and reduce the welding slag residue in the inner cavity, which helps to reduce the processing procedures, simplify the production process, improve the yield rate and reliability, and is suitable for mass production, improve production efficiency and save costs.

[0041] In step S220, the main body blank is roughly processed, and the roughly processed main body blank is welded to the end covers on both sides to obtain a main body welded part.

[0042] For example, a computer numerical control (CNC) machine tool can be used to perform rough machining on the main blank that has passed the initial inspection, remove excess material thickness on each wall, and obtain a relatively smooth outer surface. After the rough machining is completed, important dimensions can be inspected.

[0043] CNC is a program-controlled automated machine tool whose control system can logically process programs specified by control codes or other symbolic instructions, allowing the machine tool to perform specified operations and process the blank into semi-finished or finished parts through tool cutting. Since most water distributors have multiple pipe interfaces, CNC processing can help reduce the number of clamping and positioning times and improve processing accuracy and production efficiency.

[0044] In step S230, the main welded parts are fine-machined to obtain a water divider body having a plurality of first pipeline interfaces and at least one second pipeline interface, and the fine-machined water divider body is inspected to obtain a water divider that meets preset inspection requirements.

[0045] For example, Figure 8 As shown, the installation surface of the manifold and the joint surfaces of each pipeline interface can be finely processed by CNC. After the main welded parts are finely processed, the manifold body is obtained, and the manifold body is inspected to determine whether it meets the preset inspection requirements. The preset inspection requirements at least include some or all of the dimensional requirements, geometric tolerance requirements, and airtightness requirements.

[0046] For example, the air tightness test can be carried out by the bubbling method and the long-term pressure holding method. The bubbling method is to apply soapy water or other liquids that can produce bubbles on the surface of the object to be tested, and then observe whether bubbles are generated to judge the air tightness. The long-term pressure holding method is to fill the object with a certain pressure of gas or liquid and keep it for a period of time, and then use the pressure sensor to detect the pressure change to judge the air tightness. The long-term pressure holding method is suitable for high-precision and high-reliability industrial environments.

[0047] In some implementations, corresponding plugs are installed on multiple pipe interfaces of the water manifold body, and the interior is filled with liquid (such as water) to perform an airtight pressure test. If the normal working pressure of the liquid (such as water) in the water manifold is 0.5 MPa, the airtight pressure test pressure can be 1.5 times the working pressure (i.e., 0.75 MPa), and observe whether the pressure drops within a predetermined time (e.g., 15 minutes).

[0048] In some embodiments, the water divider body is inspected to obtain a water divider that meets the preset inspection requirements. In other embodiments, the water divider can be configured with multiple pipe joints, and the water divider body is inspected, and the water divider body that meets the preset inspection requirements is assembled to obtain the water divider. For example, multiple pipe interfaces on the water divider body are respectively connected to corresponding pipe joints, such as quick-connect joints, to facilitate quick disassembly and assembly of pipes.

[0049] During investment casting, if the pouring and riser design is unreasonable, the molten metal will not be fully filled or will not be able to vent, resulting in pores and affecting the yield rate.

[0050] In some implementations, the pouring cup of the investment casting is disposed at a central position above the cavity of the casting mold, the cavity of the casting mold corresponds to the main blank to be produced, and along the length direction of the main blank to be produced, a first auxiliary runner and a second auxiliary runner connected to the pouring cup are symmetrically disposed on both sides of the pouring cup. Figure 4 yes Figure 2 FIG. 2 is a schematic diagram of precision casting mold flow analysis of step S210 of the manufacturing method. Figure 4 As shown, the main blank of the water separator obtained by investment casting in step S210 may include: allowing liquid metal to flow into the investment casting mold through the pouring cup 410, the first auxiliary runner 420 and the second auxiliary runner 430, and obtaining the main blank of the water separator after cooling and solidification. The pouring cup is located in the middle, and auxiliary runners are designed on both sides. During pouring, it can ensure that the liquid metal flows to both sides, the liquid metal can be well filled and exhausted, the filling is stable, the solidification is good, and no obvious shrinkage holes appear, which can avoid the phenomenon of inadequate filling and failure to exhaust and the formation of pores.

[0051] In some specific implementations, the positions of the first auxiliary runner 420 and the second auxiliary runner 430 relative to the pouring cup 410 and the sizes of the first auxiliary runner 420 and the second auxiliary runner can be determined based on a computer precision casting mold flow analysis model.

[0052] In some implementations, a first riser 421 is provided on the top surface of the first auxiliary runner 420, and the first riser 421 is connected to the upper side of the pouring cup 410 through the first branch pipe 422. A second riser 431 is provided on the upper side of the second auxiliary runner 430, and the second riser 431 is connected to the upper side of the pouring cup 410 through the second branch pipe 432, and the first riser 421 and the second riser 431 are symmetrically arranged with respect to the pouring cup 410. In some embodiments, the first branch pipe 422 and the second branch pipe 432 are also symmetrically arranged with respect to the pouring cup 410. The symmetrical arrangement of two risers on the top surface of the auxiliary runner can make the metal liquid be evenly pressurized during the filling process, avoid inadequate filling, and make the metal liquid overflow smoothly after filling.

[0053] In the design of the main blank of the manifold, the wall thickness of the casting shell should be designed to be uniform, with sufficient machining allowance to reduce complex structural design. For the manifold, increasing the wall thickness can ensure the yield rate of wall molding to a certain extent. In addition, the shell mold of the manifold consists of an outer shell and a core mold. If the core mold is deformed or skewed, the wall thickness cannot be guaranteed. Therefore, it is necessary to ensure the design strength of the core mold and the stability of its relative position to the outer shell, which can reduce the impact on the yield rate of the final wall.

[0054] In the early stage of precision casting of the main body of the manifold, some defects appeared, such as bulges, depressions, cracks, surface sand, shrinkage holes, shrinkage, etc., as well as difficult-to-detect through pores, which will cause leakage during the final test. Therefore, how to improve the yield rate of the main body blank is the core issue.

[0055] In some implementations, before the main body blank is rough-machined, the method of the embodiment of the present application also includes: performing a solution treatment on the main body blank. After obtaining the precision-cast main body blank, the main body blank is placed at a predetermined temperature for a preset time of heating treatment. The predetermined temperature is close to the melting point of the eutectic, generally between 980 and 1250°C. The holding time is usually related to the thickness and diameter of the steel. For example, the preset holding time for steel with a thickness of 4-12mm can be 30 minutes. Maintaining the predetermined temperature for a sufficiently long time, and then rapidly cooling, allows the strengthening components to be dissolved to the maximum extent, so that the internal metal elements are evenly distributed. Comparing before and after the solution treatment, it is found that the shrinkage cavities, shrinkage and other defects that have appeared before can be repaired and significantly reduced, the surface of the casting is smoother and flatter, the residual stress is reduced, the air tightness of the casting is improved, and it is also helpful to improve the mechanical properties and heat resistance of the water separator and extend its service life.

[0056] In some implementations, after solution treatment and before rough machining of the main body blank, the manufacturing method of the embodiment of the present application may further include: performing shot blasting and / or sand blasting on the main body blank to obtain a relatively smooth blank; performing a first inspection on the main body blank, the first inspection is used to determine whether the main body blank has some or all of the following defects: pores, sand holes, wall bending, uneven wall thickness, for example, X-rays (X-rays) can be used to detect whether there are obvious pores and sand holes. Perform a first shaping treatment on the main body blank, the first shaping treatment may include grinding, straightening, etc., to ensure that the blank can enter CNC processing.

[0057] In some implementations, the rough machining of the main body blank in step S220, welding the rough machined main body blank to the end caps on both sides to obtain the main body welded part, may include: rough machining the main body blank, removing the excess material thickness of each wall surface, and obtaining a relatively smooth outer surface. The rough machined main body blank is cleaned and degreased to obtain a clean sample, waiting for the second inspection. The main body blank may be subjected to a second inspection based on one or more of X-ray detection, digital radiographic detection, and endoscope detection. On the one hand, it is focused on inspecting whether the wall thickness is uniform and meets the size requirements, and on the other hand, it is inspected whether there are obvious defects on the wall surface, such as penetrating pores that will cause leakage. An endoscope may be used to detect whether there are defects inside, such as substandard flatness, looseness, sand holes, etc. The rough machined main body blank is welded to the end caps on both sides to obtain the main body welded part; and the main body welded part is subjected to a second shaping treatment. Since the high temperature of welding (such as argon arc welding) can easily cause the water divider to deform, size detection and necessary shaping are required after welding. The weld of the main body welded part is polished. Uneven areas of the external welding surface (i.e. weld) need to be ground and polished to ensure a beautiful appearance.

[0058] In some implementations, the step S230 of fine-machining the main welded parts to obtain a water divider body having a plurality of first pipeline interfaces and at least one second pipeline interface, and inspecting the finely-machined water divider body to obtain a water divider that meets the preset inspection requirements may include: fine-machining the mounting surface of the main welded parts, the joint surfaces of the plurality of first pipeline interfaces, and the joint surfaces of all second pipeline interfaces to ensure the machining accuracy of each pipeline interface, and obtain a water divider body having a plurality of first pipeline interfaces and at least one second pipeline interface. Surface treatment and / or pickling passivation are performed on the finely-machined water divider body. After machining, surface treatment and cleaning are performed. The water divider body is subjected to an airtightness inspection to obtain a water divider that meets the preset inspection requirements. The airtightness inspection is usually the final inspection after fine machining is completed, and only the water divider that meets the airtightness inspection requirements is allowed to enter the assembly link.

[0059] For ease of explanation, in the embodiments of the present application, the water distributor may include a water distribution pipe (or water distributor) and a water collection pipe (or liquid collection pipe, liquid collection pipe). In some implementations, the water distributor may be a split structure, that is, the water distribution pipe and the water collection pipe are respectively located at different installation positions in the system, and then the two are connected by a pipeline. In other specific implementations, the water distributor may be an integrated structure. In a water distributor with an integrated structure, the water distribution pipe and the water collection pipe may be welded into one, or connected into one by fittings.

[0060] In some implementations, the main body blank is used as a blank of a water distribution pipe or a water collection pipe. The structures of the water distribution pipe and the water collection pipe can be the same or different. The blank of the water distribution pipe and the blank of the water collection pipe can be assembled into a split water distributor after being cast and processed in sequence.

[0061] In other implementations, the main body blank may include a first main body blank and a second main body blank, and the flow channel includes a first flow channel in the first main body blank and a second flow channel in the second main body blank. The first main body blank and the second main body blank may be used as blanks for a water distribution pipe and a water collection pipe, respectively, or the first main body blank and the second main body blank may be used as blanks for a water collection pipe and a water distribution pipe, respectively. In some embodiments, the first main body blank and the second main body blank may be the same, and in other embodiments, the first main body blank and the second main body blank may also be different.

[0062] In some implementations, the first main body blank and the second main body blank can be split (separate), and when the first main body blank or the second main body blank has quality problems, corresponding repair or replacement is performed so that the main body blank is not scrapped as a whole, and the assembly flexibility is good. The main body blank of the water divider is obtained by precision casting in step S210, and the main body blank has a flow channel for conveying liquid inside, and the peripheral side of the main body blank has a plurality of first holes and at least one second hole connected to the flow channel. It can include: the first main body blank and the second main body blank of the water divider are obtained by precision casting, the first main body blank has a first flow channel for conveying liquid inside, the peripheral side of the first main body blank has a portion of the first holes in the plurality of first holes connected to the first flow channel and a portion of the second hole in the at least one second hole, the second main body blank has a second flow channel for conveying liquid inside, and the peripheral side of the second main body blank has another portion of the first hole connected to the second flow channel and another portion of the second hole. The above-mentioned solid solution treatment of the main body blank can include: solid solution treatment of the first main body blank and the second main body blank. The above-mentioned shot blasting and / or sand blasting of the main body blank, the first inspection of the main body blank, and the first shaping of the main body blank may include: shot blasting and / or sand blasting of the first main body blank and the second main body blank; the first inspection of the first main body blank and the second main body blank; the first shaping of the first main body blank and the second main body blank. The above-mentioned rough machining of the main body blank, cleaning and degreasing the main body blank after the rough machining, performing a second inspection on the main body blank based on one or more of X-ray inspection, digital radiographic inspection, and endoscopic inspection, and welding the rough-machined main body blank and the end covers on both sides by using argon arc welding to obtain a main body welded part, may include: rough machining the first main body blank and the second main body blank; cleaning and degreasing the first main body blank and the second main body blank after the rough machining; performing a second inspection on the first main body blank and the second main body blank based on one or more of X-ray inspection, digital radiographic inspection, and endoscopic inspection; using argon arc welding, welding the first main body blank to its two side end covers, welding the second main body blank to its two side end covers, and if the first main body blank and the second main body blank are split, welding the first main body blank and the second main body blank through a connecting plate to obtain a main body welded part.

[0063] In some other specific implementations, the first main body blank and the second main body blank can be one-piece (integral), that is, cast one-piece. In other words, the water divider can be a cast one-piece structure. For example, the first main body blank and the second main body blank are arranged side by side, and during casting, the first main body blank and the second main body blank can have a common side wall and a shared middle side wall, which helps to reduce materials and appearance dimensions, further reduce welded parts, and reduce costs.

[0064] In some specific implementations, a single lost wax casting can produce multiple main body blanks, which can include multiple first main body blanks and multiple second main body blanks, and the first main body blanks and the second main body blanks can be used as water distributors and liquid collectors, respectively, or the first main body blanks and the second main body blanks can be used as liquid collectors and water distributors, respectively. This helps to improve the production efficiency of casting.

[0065] Different from the standard pipe + welding processing method of the related art, the embodiment of the present application adopts the precision casting method, which can ensure the basic accuracy of the main blank of the water distributor. The wall thickness of the main blank tube body can be set independently according to the needs. The main blank can meet the requirements of directly machining the pipeline interface, without machining the pipeline interface on the basis of welding the main pipe and the transition plate (such as a steel ring). The embodiment of the present application can reduce the number of welded parts and the number of welding surfaces, which helps to simplify the production process, improve the yield rate and reliability, and is suitable for mass production, improving production efficiency and saving costs.

[0066] The following further describes the installation method of the water separator in the embodiment of the present application in combination with some possible implementation methods of the present application.

[0067] Figure 5 yes Figure 2 A schematic flow chart of a possible implementation of the manufacturing method shown. Figure 6 is based on Figure 5 An exploded schematic diagram of a water separator processed by the manufacturing method shown in FIG. An integrated water separator is used as an example. Figure 6 As shown, the water distributor 600 may include: a water distributor body 610. The water distributor body 610 is provided with a main liquid supply joint 620 and at least one first liquid outlet joint 630 connected through a first flow channel 621, and a main liquid outlet joint 640 and at least one first liquid return joint 650 connected through a second flow channel 641.

[0068] The water distributor body 610 may include a water distribution pipe 611 and a water collection pipe 612, that is, the water distribution pipe 611 is provided with a main liquid inlet joint 620 and at least one first liquid outlet joint 630 connected through a first flow channel 621. The water collection pipe 612 is provided with a main liquid outlet joint 640 and at least one first liquid return joint 650 connected through a second flow channel 641.

[0069] By way of example and not limitation, Figure 6As shown, the number of first liquid outlet joints 630 can be 18, of which 16 liquid outlet joints 630 are located on the first side of the water distribution pipe 611, and 2 liquid outlet joints 630 are located on the second side of the first end of the water distribution pipe 611, and the second side is the adjacent side of the first side. The main liquid inlet joint 620 is located on the second side of the other end of the water distribution pipe 611, and the main liquid inlet joint 620 is located at one end of the water distribution pipe 611, which is convenient for unidirectional flow of liquid, helps to reduce the generation of turbulence, and reduces the impact of pipe body vibration on electronic equipment to be cooled. The number of first liquid return joints 650 can be 18, of which 16 liquid return joints 650 are located on the first side of the water collection pipe 612, and the other 2 liquid return joints 650 are located on the second side of the first end of the water collection pipe 612. The main liquid outlet joint 640 is located on the second side of the other end of the water collection pipe 612, and the main liquid outlet joint 640 is located at one end of the water collection pipe 612, which is convenient for unidirectional flow of liquid and helps to reduce the generation of turbulence.

[0070] Before proposing the embodiments of this application, Figure 6 If the water distributor shown in the figure adopts the square steel pipe + welding solution in the related art, 46 welding parts and 46 welding surfaces are required. However, by adopting the precision casting + welding method of the embodiment of the present application, the number of welding parts can be reduced to 8 and the number of welding surfaces can be reduced to 8. The embodiment of the present application adopts the precision casting method, which can form the main part of the water distributor in one piece, thereby reducing the number of welding parts and processing procedures, and reducing the production cost.

[0071] by Figure 6 Take the water separator shown in the figure as an example. Figure 5 As shown, the manufacturing method of the water separator in the embodiment of the present application may mainly include steps S501 to S514, and these steps are described in detail below.

[0072] In step S501, stainless steel precision casting is performed based on the lost wax method. The stainless steel material may be, for example, SUS304, to obtain a main body blank of the water distributor.

[0073] The main body blank may include a first main body blank and a second main body blank, and the first main body blank and the second main body blank may be used as a water distribution pipe and a water collecting pipe, respectively. The first main body blank has a first flow channel for conveying liquid inside, and the first main body blank has a portion of the first hole portions among the plurality of first hole portions connected to the first flow channel and a portion of the second hole portion among the at least one second hole portion on the circumference side. The second main body blank has a second flow channel for conveying liquid inside, and the second main body blank has another portion of the first hole portions and another portion of the second hole portions connected to the second flow channel on the circumference side.

[0074] In step S502, solution treatment is performed.

[0075] After demoulding, the castings are initially inspected to ensure that there are no defects such as scratches, burrs, insufficient pouring, steel beans, sand sticking, cracks, etc. Qualified ones are cut and blanked to obtain the main blank of the water distributor. The main blank is placed at a predetermined temperature and heated for a preset time. The metal elements inside are evenly distributed, and then quickly cooled, which helps to reduce residual stress and improve the air tightness of the casting.

[0076] In step S503, the first main body blank and the second main body blank are subjected to shot blasting and / or sand blasting to obtain relatively smooth blanks.

[0077] In step S504, a first inspection is performed on the first body blank and the second body blank.

[0078] Early inspection of the blank to find problems will help improve the yield rate and save processing costs. In this step, the water divider is inspected inside and outside. In addition to visual inspection, X-ray fluoroscopy can be added. For example, X-ray is used to detect whether there are obvious pores and sand holes, whether there is obvious wall curvature, uneven wall thickness, etc. Figure 7 yes Figure 5 FIG. 4 is a schematic diagram of an X-ray inspection in step S504 of the manufacturing method. Figure 7 As shown in the figure, the air holes (light-colored bubbles) in the blank can be clearly found through X-ray perspective. It can also assist the endoscope to detect the internal flow channel and select qualified samples to enter the next process.

[0079] In some embodiments, the main body blank or the water divider can also be cut into layers during the trial production stage to detect the internal quality.

[0080] In step S505, the first main body blank and the second main body blank are subjected to a first shaping process, which may include grinding, straightening, etc., to ensure that the blanks can be processed by CNC.

[0081] In step S506, CNC rough machining is performed on the first main body blank and the second main body blank.

[0082] The excess material thickness of each wall is removed to obtain a relatively smooth outer surface, and the important dimensions are inspected after processing.

[0083] In step S507, the rough-machined first main body blank and the second main body blank are cleaned and degreased to obtain clean samples to be inspected.

[0084] In step S508, a second inspection may be performed on the first body blank and the second body blank based on X-ray inspection, digital radiographic inspection, or endoscope inspection.

[0085] On the one hand, the focus is on checking whether the wall thickness is uniform and meets the size, and on the other hand, whether there are obvious defects on the wall surface, such as penetrating pores. Endoscopes can be used to detect whether there are defects inside, such as substandard flatness, looseness, sand holes, etc.

[0086] In step S509, the first main body blank is welded to its two side end covers by argon arc welding, the second main body blank is welded to its two side end covers, and the first main body blank and the second main body blank are welded through a connecting plate to obtain a main body welded part.

[0087] For irregular parts, argon arc welding can penetrate the workpiece and provide better welding quality. Figure 8 yes Figure 5 A possible schematic diagram of step S509 in the manufacturing method is shown in FIG. The welding surface and welding point of the argon arc welding can be as follows Figure 8 As shown, the water distribution pipe and the water collecting pipe are welded together to form a complete welded assembly.

[0088] In step S510, the main body welded part is subjected to a second shaping process. Since the high temperature of welding (such as argon arc welding) easily causes deformation of the main body, size detection and necessary shaping are required after welding.

[0089] In step S511, the weld of the main welded part is ground and polished. The uneven outer weld surface (ie, weld) needs to be ground and polished to ensure a beautiful appearance.

[0090] In step S512, the mounting surface of the main weldment, the joint surfaces of the first pipe interfaces, and the joint surfaces of the second pipe interfaces are fine-machined. Each fine-machined surface can be as follows: Fig. 9 As shown, the processing accuracy of each pipeline interface is ensured to obtain the water distributor body.

[0091] In step S513, the water separator body after fine machining is subjected to surface treatment and / or pickling passivation. Surface treatment and cleaning are performed after fine machining is completed.

[0092] In step S514, the water divider body is tested for air tightness, and only the water divider body that meets the air tightness test requirements is allowed to enter the next assembly link.

[0093] The embodiment of the present application adopts the precision casting method to ensure the basic accuracy of the main blank of the water distributor. The wall thickness of the main blank tube body can be set independently as needed. The main blank can meet the requirements of directly machining the pipeline interface, without having to machine the pipeline interface on the basis of welding the main tube and the transition plate (such as a steel ring). The embodiment of the present application can reduce the number of welded parts and the number of welding surfaces, which helps to simplify the production process, improve the yield rate and reliability, is suitable for mass production, improves production efficiency and saves costs. The embodiment of the present application introduces a solution treatment process to repair the defects such as shrinkage cavities and shrinkage produced during the precision casting process, so that air tightness is guaranteed and the yield rate is effectively improved.

[0094] Combination of the above Figure 1-Figure 9 The manufacturing method embodiment of the present application is described in detail. Figure 10 to Figure 11 The device embodiment of the present application is described in detail. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the parts not described in detail can refer to the previous method embodiment.

[0095] The present application also provides a water separator, which is manufactured by any of the above-mentioned methods for manufacturing a water separator. Figure 6 As shown, the water separator 600 includes: a water separator body 610 .

[0096] The water distributor body 610 is provided with a main liquid supply joint 620 and at least one first liquid outlet joint 630 connected through a first flow channel 621 , and a main liquid outlet joint 640 and at least one first liquid return joint 650 connected through a second flow channel 641 .

[0097] The water distributor body 610 may include a water distribution pipe 611 and a water collection pipe 612, that is, the water distribution pipe 611 is provided with a main liquid inlet joint 620 and at least one first liquid outlet joint 630 connected through a first flow channel 621. The water collection pipe 612 is provided with a main liquid outlet joint 640 and at least one first liquid return joint 650 connected through a second flow channel 641. The water distributor 600 may be a split structure or an integrated structure.

[0098] The embodiment of the present application also provides a liquid cooling device. Fig.10 Schematic diagram of component units / partial component units of the liquid cooling heat dissipation device provided in the embodiment of the present application. The liquid cooling heat dissipation device can be applied to electronic devices, and the electronic devices can be servers or server clusters. Fig.10 As shown, the liquid cooling heat dissipation device 1000 may include: a water separator 600 and a liquid cooling component 1010 .

[0099] The liquid cooling component 1010 is provided with a flow channel extending in a preset direction, and at least one liquid inlet port and at least one liquid outlet port. The liquid cooling component 1010 is used to thermally contact with a heating element in an electronic device to dissipate heat from the heating element. The heating element may be, for example, a memory of a server, a PCIE card slot, etc.

[0100] At least one liquid inlet port of the liquid cooling component 1010 is connected to at least one first liquid outlet connector 630 of the water distributor 600 , and at least one liquid outlet port of the liquid cooling component 1010 is connected to at least one first liquid return connector 650 of the water distributor 600 .

[0101] The cooling liquid flowing in the water separator 600 and the liquid cooling assembly 1010 may be deionized water, a propylene glycol aqueous solution, or an ethylene glycol aqueous solution, etc.

[0102] In some implementations, the liquid cooling device 1000 may further include: an intermediate heat exchange component 1030. The intermediate heat exchange component 1030 is usually located outside the rack and is used to cool the coolant. The intermediate heat exchange component 1030 has a liquid inlet and a liquid outlet. The liquid outlet of the intermediate heat exchange component 1030 is connected to the main liquid inlet joint 620 of the water distribution pipe 611 of the water distributor 600, and the liquid inlet of the intermediate heat exchange component 1030 is connected to the main liquid outlet joint 640 of the water collecting pipe 612 of the water distributor 600.

[0103] The water distribution pipe 611 of the water distributor 600 is connected to the low-temperature coolant flowing out of the intermediate heat exchange component 1030 through the main liquid inlet joint 620, and the low-temperature coolant is diverted to the liquid cooling component 1010 through multiple first liquid outlet joints 630. The liquid cooling component 1010 contacts and exchanges heat with the heating element in the electronic device, and the temperature of the coolant rises. The water collection pipe 612 of the heat dissipation water distributor 600 receives and converges the heated coolant flowing out of the liquid cooling component 1010 through multiple first liquid return joints 650, and allows the coolant to flow to the intermediate heat exchange component 1030 through the main liquid outlet joint 640. The intermediate heat exchange component 1030 cools down the returning coolant, and the cooled coolant flows back into the water distribution pipe 611 to form a circulating cooling route.

[0104] An embodiment of the present application also provides an electronic device. Fig.11 Schematic diagram of component units / partial component units of an electronic device provided in an embodiment of the present application. Fig.11 As shown, the electronic device 1100 includes the liquid cooling device 1000 as described above. The electronic device may be, for example, a computer, a server, a server cluster, etc. The server may be, for example, a cabinet server or a PCIE GPU server.

[0105] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0106] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0107] In the embodiments provided in the present application, it should be understood that the disclosed devices / equipment and methods can be implemented in other ways. For example, the device / equipment embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0108] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0109] It should also be understood that the term “and / or” used in the specification and appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0110] As used in the specification and appended claims of this application, the term "if" can be interpreted as "when" or "uponce" or "in response to determining" or "in response to detecting", depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "uponce it is determined" or "in response to determining" or "uponce [described condition or event] is detected" or "in response to detecting [described condition or event]", depending on the context.

[0111] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for manufacturing a water separator, characterized in that: include: A main body blank of a water distributor is obtained by precision casting, wherein the main body blank has a flow channel for conveying liquid inside, and the circumferential side of the main body blank has a plurality of first hole portions and at least one second hole portion connected to the flow channel, and part or all of the plurality of first hole portions are used to be made into a plurality of first pipeline interfaces after removing machining allowances, and part or all of the at least one second hole portion are used to be made into at least one second pipeline interface after removing machining allowances; Rough machining is performed on the main body blank, and the rough-machined main body blank is welded to the end covers on both sides to obtain a main body welded part; The main welded part is fine-machined to obtain a water divider main body having the plurality of first pipeline interfaces and the at least one second pipeline interface, and the fine-machined water divider main body is inspected to obtain the water divider that meets preset inspection requirements.

2. The manufacturing method according to claim 1, characterized in that: The method of obtaining the main body blank of the water distributor by precision casting comprises: The main body blank of the water divider is obtained by investment casting.

3. The manufacturing method according to claim 2, characterized in that: The pouring cup of the investment casting is arranged at the center position above the cavity of the casting mold, the cavity of the casting mold corresponds to the main body blank to be produced, and along the length direction of the main body blank to be produced, a first auxiliary runner and a second auxiliary runner connected to the pouring cup are symmetrically arranged on both sides of the pouring cup; The method of obtaining the main body blank of the water divider by investment casting comprises: Liquid metal is made to flow into the casting mold through the pouring cup, the first auxiliary runner and the second auxiliary runner, and after cooling and solidification, a main body blank of the water distributor is obtained.

4. The manufacturing method according to claim 3, characterized in that: A first riser is arranged on the top surface of the first auxiliary runner, and the first riser is connected to the upper side of the pouring cup through a first branch pipe. A second riser is arranged on the top surface of the second auxiliary runner, and the second riser is connected to the upper side of the pouring cup through a second branch pipe. The first riser and the second riser are arranged symmetrically about the pouring cup.

5. The manufacturing method according to claim 1, characterized in that: Before rough machining the main body blank, the manufacturing method further comprises: The main body blank is subjected to a solution treatment.

6. The manufacturing method according to claim 5, characterized in that: After the main body blank is subjected to solution treatment and before the main body blank is subjected to rough machining, the manufacturing method further comprises: Performing shot blasting and / or sand blasting on the main body blank; Performing a first inspection on the main body blank, wherein the first inspection is used to determine whether the main body blank has some or all of the following defects: pores, sand holes, wall bending, and uneven wall thickness; Performing a first shaping process on the main body blank; The method of rough-machining the main body blank and welding the rough-machined main body blank to the end covers on both sides to obtain a main body welded part includes: Performing rough machining on the main body blank; Cleaning and degreasing the rough-machined main body blank; Performing a second inspection on the main body blank based on one or more of X-ray inspection, digital radiographic inspection, and endoscope inspection; Welding the rough-machined main body blank to the end covers on both sides to obtain the main body welded part; Performing a second shaping process on the main weldment; Grinding and polishing the weld of the main welded part; The method of fine-machining the main body welded part to obtain a water divider main body having the plurality of first pipeline interfaces and the at least one second pipeline interface, and inspecting the finely-machined water divider main body to obtain the water divider that meets the preset inspection requirements includes: Finishing the mounting surface of the main body welding part, the joint surfaces of the plurality of first pipeline interfaces and the joint surface of the at least one second pipeline interface to obtain the water divider main body; Performing surface treatment and / or pickling passivation on the water separator body after fine processing; Perform an air tightness test on the water divider body to obtain the water divider that meets the preset test requirements.

7. The manufacturing method according to any one of claims 1 to 6, characterized in that: The main body blank includes a first main body blank and a second main body blank, the first main body blank and the second main body blank are split or integrated, and the flow channel includes a first flow channel in the first main body blank and a second flow channel in the second main body blank; The main body blank of the water distributor is obtained by precision casting, the main body blank has a flow channel for conveying liquid inside, and the peripheral side of the main body blank has a plurality of first holes and at least one second hole connected to the flow channel, including: The first main body blank and the second main body blank of the water divider are obtained by precision casting, wherein the first main body blank has a portion of the first hole portions among the plurality of first hole portions and a portion of the second hole portions among the at least one second hole portion communicating with the first flow channel on its circumferential side, and the second main body blank has another portion of the first hole portions and another portion of the second hole portions communicating with the second flow channel on its circumferential side; The main body blank after rough machining is welded with the end covers on both sides to obtain a main body welded part, including: The first main body blank is welded with its two side end covers, and the second main body blank is welded with its two side end covers. If the first main body blank and the second main body blank are separate, the first main body blank and the second main body blank are welded through a connecting plate to obtain the main body welded part.

8. A water distributor, characterized in that: The water divider is manufactured using the manufacturing method of the water divider as described in any one of claims 1 to 7, and the water divider includes a water divider body, and the water divider body is provided with a main liquid inlet joint and at least one first liquid outlet joint connected by a first flow channel, and a main liquid outlet joint and at least one first liquid return joint connected by a second flow channel.

9. A liquid cooling device, characterized in that: include: The water separator as claimed in claim 8; A liquid cooling component is provided with a flow channel extending in a preset direction, and at least one liquid inlet port and at least one liquid outlet port, the liquid cooling component is used to thermally contact with a heating element of an electronic device to dissipate heat from the heating element; At least one liquid inlet port of the liquid cooling component is respectively connected to at least one first liquid outlet connector of the water distributor, and at least one liquid outlet port of the liquid cooling component is respectively connected to at least one first liquid return connector of the water distributor.

10. An electronic device, characterized in that: Comprising the liquid cooling heat dissipation device as described in claim 9.

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