Liquid cooling device of integrated water nozzle cold plate

Abstract

The utility model discloses a liquid cooling device of an integrated water nozzle cold plate, which comprises a cold plate, the cold plate is composed of an upper cold plate and a lower cold plate, the lower cold plate is arranged below the upper cold plate in a sealing mode and forms a cooling cavity in a surrounding mode, the upper cold plate is provided with two water nozzles communicated with the cooling cavity, and the two water nozzles are communicated with the cooling cavity. Wherein one water nozzle is used for enabling refrigerant liquid to enter the cooling cavity, and the other water nozzle is used for enabling the refrigerant liquid to be discharged out of the cooling cavity. The two water nozzles and the upper cold plate are integrally formed in a forging and pressing mode. The two water nozzles are each provided with a quick-screwing structure connected with a pipeline. The water nozzle and the upper cold plate are subjected to an integrated forging forming process, so that mounting and sealing welding processes at the joint of the water nozzle and the cold plate as well as helium detection and sensor monitoring of leakage-proof liquid are omitted, the manufacturing process and the testing process are more simplified, liquid leakage risk points at the joint of the water nozzle and the cold plate are avoided, and the production efficiency is improved. And the use reliability of a finished product is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid cooling servers and relates to a liquid cooling device of an integrated water nozzle cold plate. Background Art

[0002] The advent of the AI ​​era has brought increasing challenges to chip thermal design, and cold plate heat dissipation has become the trend in liquid cooling design for high-power chips. The resulting innovations in cold plate structural design, simplified manufacturing processes, high reliability, and ease of installation and maintenance have put forward new requirements to lead market development.

[0003] In the existing cold plate structure, the nozzles for the inlet and outlet refrigerants and the cold plate adopt a split design, that is, the nozzles need to be installed on the cold plate and sealed by welding. After welding, the welds need to be tested for leakage and helium detection, and sensors need to be installed for monitoring when the finished product is used. It is impossible to strictly avoid the risk of short circuit or even burning of the server PCB motherboard circuit caused by leakage in the long term. At the same time, the manufacturing process and testing process become complicated and cumbersome, with high manufacturing costs and risks that cannot be strictly controlled.

[0004] At the same time, the connection between the refrigerant pipe and the water nozzle uses a traditional hexagonal nut to lock and seal with a wrench. A wrench tool is required when inserting, installing or removing the hard pipe, which makes it impossible to achieve the demand for quick installation, maintenance and removal of the refrigerant pipe without tools, which is time-consuming and labor-intensive.

[0005] Therefore, it is necessary to improve the prior art to overcome the defects in the prior art. Utility Model Content

[0006] In order to solve the problems existing in the background technology, the purpose of the utility model is to provide a liquid cooling device of an integrated water nozzle cold plate to improve its convenience of use.

[0007] The purpose of the utility model is achieved through the following technical solutions:

[0008] A liquid cooling device for an integrated water-nozzle cold plate comprises a cold plate, wherein the cold plate consists of an upper cold plate and a lower cold plate, wherein the lower cold plate is sealed and arranged below the upper cold plate and encloses a cooling cavity, wherein the upper cold plate is provided with two water nozzles connected to the cooling cavity, wherein one water nozzle is used for the refrigerant liquid to enter the cooling cavity, and the other water nozzle is used for the refrigerant liquid to discharge from the cooling cavity; the two water nozzles are forged integrally with the upper cold plate; and the two water nozzles are provided with a quick-screw structure connected to the pipeline.

[0009] As a further improvement of an embodiment of the utility model, a plurality of PIN columns are arranged in the cooling cavity, and the PIN columns are integrally forged with the lower cold plate.

[0010] As a further improvement of an embodiment of the utility model, the pipeline adopts any one of a hose or a hard pipe.

[0011] As a further improvement of an embodiment of the utility model, the quick-tightening structure includes a quick-tightening nut and a hose connector, one end of the hose connector is locked to the interface of the faucet, the quick-tightening nut is sleeved on the hose, one end of the hose is clamped to the hose connector, the quick-tightening nut is threadedly connected to the hose connector and fixes the hose on the faucet.

[0012] As a further improvement of an embodiment of the utility model, the quick-tightening structure includes a threaded joint, a seal and a quick-tightening nut, one end of the threaded joint is connected to the interface of the faucet, the quick-tightening nut is sleeved on the hard pipe, one end of the hard pipe is inserted into the seal, the seal is placed on the other end of the threaded joint, the quick-tightening nut is threadedly connected to the threaded joint and fixes the hard pipe on the faucet. An "O"-shaped sealing ring is arranged between the threaded joint and the faucet to provide sealing between the two.

[0013] As a further improvement of an embodiment of the utility model, a clip assembly is detachably provided on the cold plate outside the cooling cavity, and the clip assembly cooperates with bolts to fix the cold plate on the PCB board.

[0014] As a further improvement of an embodiment of the utility model, the fastener assembly includes a fastener seat, a fastener nut is fixedly arranged on the fastener seat, and a fastener spring is arranged on the fastener seat to lock the fastener seat to the cold plate; the cold plate is provided with an avoidance groove for avoiding the ejector pin on the fastener seat, the cold plate is provided with a clamping groove for clamping the fastener spring, and the cold plate is provided with a first channel vertically connected to the fastener nut.

[0015] As a further improvement of an embodiment of the utility model, a rotation groove for avoiding the quick-tightening nut is provided on the upper cold plate.

[0016] As a further improvement of an embodiment of the utility model, the cooling cavity is formed by stamping in the middle of the upper cold plate, a step is set at the edge of the cooling cavity, the edge of the lower cold plate is overlapped on the step, and the lower cold plate is sealed on the upper cold plate by welding.

[0017] As a further improvement of an embodiment of the utility model, the welding adopts stir friction welding.

[0018] The above technical solution has the following beneficial effects:

[0019] 1. By adopting an integrated forging process for the faucet and the upper cold plate, the installation of the connection between the faucet and the cold plate, the sealing welding process, the helium detection test of the leak-proof liquid, and the sensor monitoring are omitted, making the manufacturing process and testing process more simplified, thereby avoiding the risk of leakage at the connection between the faucet and the cold plate, and greatly improving the reliability of the finished product;

[0020] 2. The connection between the hard pipe and the faucet adopts a quick-tightening structure, that is, there is an "O"-shaped sealing ring between the threaded joint and the faucet end to complete the connection and sealing, and a sealing member is provided between the hard pipe and the threaded joint. The hard pipe is inserted into the sealing member, and the missing sealing member is placed in the threaded joint. The quick-tightening nut is manually tightened onto the threaded joint, so that no wrench tool is required when inserting, installing or removing the hard pipe, thereby realizing the quick installation and removal of the refrigerant hard pipe without tools, which is convenient and quick for installation and maintenance, saving time and effort;

[0021] 3. A rotation groove for avoiding the quick-tightening nut is designed on the upper cold plate. The rotation groove is forged integrally with the upper cold plate, which is beautiful, convenient, time-saving and labor-saving.

[0022] 4. The clip assembly can be detachably installed and is compatible with the installation hole sizes of most server motherboards on the market, enabling quick installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0024] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0025] Figure 1 This is a schematic diagram of the explosion structure in the first state (hard tube) provided by the utility model.

[0026] Figure 2 This is a schematic diagram of the three-dimensional structure of the first state provided by the utility model (hard tube).

[0027] Figure 3 This is a schematic diagram of the third-dimensional structure of the second state provided by the utility model (hard tube).

[0028] Figure 4 This is a schematic diagram of the second state explosion structure (hard tube) provided by the utility model.

[0029] Figure 5 This is a top view structural schematic diagram (hard tube) provided by the utility model.

[0030] Figure 6 for Figure 5 Schematic cross-sectional view along the AA direction.

[0031] Figure 7 This is a schematic diagram of the explosion structure in the first state (hose) provided by the utility model.

[0032] Figure 8 This is a three-dimensional schematic diagram of the buckle assembly provided by the utility model.

[0033] In the figure: 1-lower cold plate; 2-upper cold plate; 3-liquid inlet nozzle; 4-liquid outlet nozzle; 5-water inlet hard pipe; 6-water outlet hard pipe; 7-PIN column; 8-cooling chamber; 9-threaded joint; 10-seal; 11, 16-quick-tighten nuts; 12-sealing ring; 13-fastener assembly; 14-rotating groove; 15-hose; 17-hose joint; 131-fastener seat; 132-fastener nut; 133-fastener spring. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0036] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0037] See also Figure 1-Figure 6 As shown, the liquid cooling device of the integrated water nozzle cold plate includes a cold plate composed of a lower cold plate 1 and an upper cold plate 2, and a liquid inlet water nozzle 3 and a liquid outlet water nozzle 4 are arranged on the upper cold plate 2. The liquid inlet water nozzle 3 and the liquid outlet water nozzle 4 are formed with the upper cold plate 2 by integrated forging, and are an integral stamping part with high structural strength and no leakage points.

[0038] In this embodiment, the liquid inlet nozzle 3 and the liquid outlet nozzle 4 have the same structure and are collectively referred to as nozzles. The liquid inlet nozzle 3 and the liquid outlet nozzle 4 are provided with a quick-tightening structure connected to the pipeline.

[0039] Specifically, if Figure 1 As shown, when the pipeline adopts a hard pipe, the liquid inlet nozzle 3 is connected to the water inlet hard pipe 5 through a quick-twist structure; the liquid outlet nozzle 4 is connected to the water outlet hard pipe 6 through a quick-twist structure. The above-mentioned water inlet hard pipe 5 and water outlet hard pipe 6 are collectively referred to as hard pipes.

[0040] Furthermore, the quick-tightening structure used for the hard pipe includes a threaded joint 9, a seal 10 and a quick-tightening nut 11, one end of the threaded joint 9 is connected to the interface of the faucet, the quick-tightening nut 11 is sleeved on the hard pipe, one end of the hard pipe is inserted into the seal 10, and the seal 10 is placed on the other end of the threaded joint 9, and the quick-tightening nut 11 is threadedly connected to the threaded joint and fixes the hard pipe on the faucet.

[0041] like Figure 7 As shown, when a hose is used for the pipeline, the two water nozzles are connected to the hose 15 through a quick-tightening structure. The quick-tightening structure used for the hose includes a quick-tightening nut 16 and a hose connector 17, one end of the hose connector 17 is locked to the interface of the water nozzle, the quick-tightening nut 16 is sleeved on the hose 15, one end of the hose is clamped to the hose connector 17, the quick-tightening nut 16 is threadedly connected to the hose connector and the hose is fixedly installed on the water nozzle.

[0042] When all pipelines are made of hoses, when the refrigerant pipes of multiple chips are assembled in parallel or in series on the server PCB motherboard, the flexible characteristics of the hose can be used to compensate for the cumulative tolerance between each chip component and the mounting hole distance on the PCB motherboard. The assembly can be completed without tooling correction, which improves the assembly efficiency and avoids the potential stress after the installation of rigid pipes, which leads to potential risk points of leakage between joints.

[0043] Preferably, the outer surfaces of the quick-tightening nut 11 and the quick-tightening nut 16 are knurled to facilitate the knob operation of the staff.

[0044] Furthermore, a sealing ring 12 is provided at the connection between the threaded joint 9 and the faucet. The sealing ring 12 is an "O"-shaped sealing ring to improve the sealing performance of the connection between the threaded joint 9 and the faucet.

[0045] In order to facilitate the operation of the staff in this embodiment, a rotation groove 14 for avoiding the quick-tightening nut is also provided on the upper cold plate 2. The rotation groove 14 reserves space for the fingers of the staff, which is convenient for the staff to adjust the quick-tightening nut.

[0046] In this embodiment, the rotating groove 14 is formed as a single piece during forging of the upper cold plate 2. Such a configuration helps to improve the manufacturing efficiency.

[0047] By replacing the quick-twist structure on the faucet, the faucet can be connected to both a hard pipe and a soft pipe, which greatly improves the application range of the faucet.

[0048] In this embodiment, the cold plate has a cooling cavity 8 inside, and the cooling cavity 8 is connected to two water nozzles, so that the refrigerant liquid flows into the cooling cavity 8 from one water nozzle, and the refrigerant liquid in the cooling cavity 8 flows out from the other water nozzle, so that the refrigerant liquid in the cooling cavity 8 flows. When the cold plate is placed on the chip, the high temperature heat emitted by the chip is transferred to the cold plate and heat exchanged with the refrigerant liquid, which has a cooling effect on the chip.

[0049] In order to speed up the heat dissipation of the chip, a number of PIN columns 7 are arranged in the cooling chamber. The above-mentioned PIN column 7 and the lower cold plate 1 are integrally formed by forging, and the PIN column 7 and the lower cold plate 1 are a whole when in use. Structurally, in this embodiment, the PIN column 7 is cylindrical, and two adjacent PIN columns 7 are arranged equidistantly. Through the design of the PIN column 7, the heat on the lower cold plate 1 is transferred to the PIN column 7. Since the PIN column 7 is in full contact with the refrigerant liquid, it can quickly exchange heat with the refrigerant liquid, thereby realizing rapid cooling of the chip.

[0050] Of course, the PIN column 7 can also be set on the upper cold plate 2, which can also achieve the purpose of accelerating heat transfer. In this embodiment, the PIN column 7 is set on the lower cold plate 1 to facilitate industrial production and processing. The PIN column 7 and the lower cold plate 1 are integrally formed by molding or integral forging to improve the production efficiency.

[0051] In this embodiment, the lower cold plate 1 is sealed and arranged below the upper cold plate 2 to enclose and form the cooling cavity 8. Specifically, the cooling cavity 8 is formed by stamping in the middle of the upper cold plate 2, and a step is arranged at the edge of the cooling cavity 8, and the edge of the lower cold plate 1 is overlapped to the step. After the lower cold plate 1 is placed on the step, the lower cold plate 1 is fixed to the upper cold plate 2 by welding, so that the lower cold plate 1 and the upper cold plate 2 are welded into a whole, ensuring the sealing performance of the cooling cavity at the connection of the lower cold plate 1. Except for the two water nozzles connected, the other areas of the cooling cavity 8 are in a closed state, providing a flow space for the inflow and outflow of the refrigerant liquid.

[0052] The welding in this embodiment adopts friction stir welding, wherein the friction stir welding process is relatively simple, the mechanical automation degree is high, and the qualified rate of large-scale finished products is optimized and relatively easy to control.

[0053] A clip assembly 13 is detachably provided on the cold plate outside the cooling cavity 8 , and the clip assembly cooperates with bolts to fix the cold plate on the PCB board.

[0054] Specifically, four fastener grooves are arranged on the upper cold plate 2 . The four fastener grooves are distributed in a rectangular shape on both sides of the upper cold plate 2 . The four fastener grooves are symmetrically distributed about the central axis of the upper cold plate 2 .

[0055] In this embodiment, the fastener groove is formed as a single piece during forging of the upper cold plate 2. Such a configuration helps to improve the manufacturing efficiency.

[0056] Correspondingly, the number of the fastener components 13 is set to four, and each of the fastener components corresponds to one of the fastener slots. In this way, the fastener components and the fastener slots are arranged to engage with each other on both sides of the upper cold plate 2 in the transverse direction, which can achieve a better positioning effect.

[0057] In this embodiment, the buckle assembly 13 is as follows Figure 8 As shown, it includes a fastener seat 131, a fastener nut 132 is fixedly arranged on the fastener seat 131, and a fastener spring 133 is arranged on the fastener seat 131 to lock the fastener seat to the cold plate. Correspondingly, a bypass groove for avoiding the ejector pin on the fastener seat is arranged on the cold plate, a clamping groove for the fastener spring 133 to clamp is arranged on the cold plate, and a first channel vertically connected to the fastener nut 132 is arranged on the cold plate. When in use, the ejector pin on the fastener seat is first aligned with the bypass groove, and then the fastener spring 133 is used to position the fastener seat 131, and finally a bolt is passed through the fastener nut 132 to lock it to the installation hole of the server motherboard to achieve rapid installation of the cold plate.

[0058] In summary, the embodiments of the present invention achieve the following technical effects:

[0059] By adopting an integrated forging process for the faucet and the upper cold plate, the installation of the connection between the faucet and the cold plate, the sealing welding process, the helium detection test of the leak-proof liquid, and the sensor monitoring are eliminated, making the manufacturing process and testing process simpler, thereby avoiding the risk of leakage at the connection between the faucet and the cold plate and greatly improving the reliability of the finished product.

[0060] A rotation groove for avoiding the quick-tightening nut is designed on the upper cold plate, and the rotation groove is integrally forged with the upper cold plate, which is beautiful and convenient, and is convenient for staff to operate, saving time and effort.

[0061] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0064] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. The liquid cooling device of the integrated water nozzle cold plate is characterized by: It includes a cold plate, which consists of an upper cold plate and a lower cold plate. The lower cold plate is sealed and arranged below the upper cold plate to enclose a cooling cavity. The upper cold plate is provided with two water nozzles connected with the cooling cavity, one of which is used for the refrigerant liquid to enter the cooling cavity, and the other is used for the refrigerant liquid to discharge from the cooling cavity. The two water nozzles are forged integrally with the upper cold plate. The two water nozzles are provided with a quick-screw structure connected with the pipeline.

2. The liquid cooling device according to claim 1, characterized in that: A plurality of PIN columns are arranged in the cooling cavity, and the PIN columns are integrally forged with the lower cold plate.

3. The liquid cooling device according to claim 1 or 2, characterized in that: The pipeline is any one of a soft pipe or a hard pipe.

4. The liquid cooling device according to claim 3, characterized in that: The quick-tightening structure includes a quick-tightening nut and a hose connector, one end of the hose connector is locked to the interface of the faucet, the quick-tightening nut is sleeved on the hose, one end of the hose is clamped to the hose connector, and the quick-tightening nut is threadedly connected to the hose connector and fixes the hose on the faucet.

5. The liquid cooling device according to claim 3, characterized in that: The quick-tightening structure includes a threaded joint, a seal and a quick-tightening nut. One end of the threaded joint is connected to the interface of the faucet. The quick-tightening nut is sleeved on the hard pipe. One end of the hard pipe is inserted into the seal. The seal is placed on the other end of the threaded joint. The quick-tightening nut is threadedly connected to the threaded joint and fixes the hard pipe on the faucet.

6. The liquid cooling device according to claim 1 or 2, characterized in that: A clip assembly is detachably provided on the cold plate outside the cooling cavity, and the clip assembly cooperates with bolts to fix the cold plate on the PCB.

7. The liquid cooling device according to claim 6, characterized in that: The fastener assembly includes a fastener seat, a fastener nut is fixedly arranged on the fastener seat, and a fastener spring is arranged on the fastener seat to lock the fastener seat to the cold plate; the cold plate is provided with an avoidance groove for avoiding the ejector pin on the fastener seat, the cold plate is provided with a clamping groove for clamping the fastener spring, and the cold plate is provided with a first channel vertically connected to the fastener nut.

8. The liquid cooling device according to claim 4 or 5, characterized in that: The upper cold plate is provided with a rotation groove for avoiding the quick-tightening nut.

9. The liquid cooling device according to claim 1, characterized in that: The cooling cavity is formed by stamping in the middle of the upper cold plate, a step is arranged at the edge of the cooling cavity, the edge of the lower cold plate is overlapped on the step, and the lower cold plate is sealed on the upper cold plate by welding.

10. The liquid cooling device according to claim 9, characterized in that: The welding is performed by friction stir welding.

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