Aluminum liquid cooling plate of pump-driven two-phase liquid cooling system

Abstract

The utility model relates to the field of machine room heat dissipation, and particularly discloses an aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system, which comprises an upper plate body and a lower plate body which are integrally die-cast and forged by adopting aluminum materials, and the lower bottom surface of the upper plate body is propped against the upper surface of the lower plate body; a closed first cavity is formed between the upper plate body and the lower plate body; the upper plate body is provided with a plurality of big-end-up first protrusions in the first cavity, the lower plate body is provided with second protrusions in mirror symmetry with the first protrusions along the horizontal plane in the first cavity, and first intervals are arranged between the lower surfaces of the first protrusions and the upper surfaces of the second protrusions; a water inlet pipe and a water outlet pipe which are communicated with the outside are respectively arranged on two opposite sides of the first cavity. The structural design is suitable for stamping and die sinking, the production cost is low, and machining is convenient and fast; after the upper plate body and the lower plate body are closed, the sealing performance is good, liquid leakage is not prone to occurring, the structure is simple, and dismounting and cleaning are easy.

Description

Technical Field

[0001] The utility model relates to the field of heat dissipation in a computer room, in particular to an aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system. Background Art

[0002] The pump-driven two-phase cold plate liquid cooling system is an advanced heat dissipation technology that is widely used in high heat density equipment such as data centers, servers, and IGBTs. It uses liquid as the cooling medium and circulates the liquid inside the liquid cold plate through a pump drive to achieve efficient heat dissipation of the heating element. In the pump-driven two-phase cold plate liquid cooling system, the cooling liquid flows through the microchannels inside the cold plate under the drive of the pump, and absorbs the heat of the heating element through heat conduction and convection. As the temperature of the liquid increases, part of the liquid will undergo a phase change from liquid to gas to form a gas-liquid mixture. This phase change process will absorb a large amount of heat, thereby achieving efficient heat dissipation.

[0003] However, the liquid cooling plates / pipes used in the existing pump-driven two-phase cold plate liquid cooling technology are mostly made of copper or stainless steel, with complex manufacturing processes and multiple parts splicing or CNC precision machining and cutting, resulting in high overall costs and difficulty in promotion and application. In addition, the cooling medium used in the existing pump-driven two-phase cold plate liquid cooling technology is mostly conductive liquid. If a leak occurs, it may have a serious impact on the normal operation of electronic equipment and even cause damage to the equipment. At the same time, the unreasonable distribution of the liquid cooling plate flow channel can easily lead to poor boiling heat exchange effect, low heat exchange efficiency, poor inlet and outlet liquid temperature control, and inability to ensure the outlet dryness index.

[0004] The cooling medium used in the current common pump-driven two-phase cold plate liquid cooling technology is volatile, costly, and complex to maintain. The liquid cooling system requires regular cleaning and maintenance to remove impurities and sediment that may clog the pipes or affect the heat dissipation effect. Some existing liquid cooling plates cannot be disassembled and can only be flushed, or are difficult to disassemble and the cleaning process is cumbersome. Utility Model Content

[0005] In order to overcome the problems of complex structure, high production cost, complicated cleaning and high risk of liquid leakage of existing liquid cooling plates, the utility model provides an aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system.

[0006] The technical solution adopted by the utility model is: an aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system, which adopts an upper plate body and a lower plate body that are integrally die-cast and forged by aluminum material, and the lower bottom surface of the upper plate body abuts against the upper surface of the lower plate body;

[0007] A sealed first cavity is provided between the upper plate body and the lower plate body;

[0008] The upper plate body is provided with a plurality of first protrusions in the shape of a prism protruding downward in the first cavity, the lower plate body is provided with a second protrusion in the first cavity that is mirror-symmetrical to the first protrusion along a horizontal plane, and a first gap is provided between the lower surface of the first protrusion and the upper surface of the second protrusion;

[0009] A water inlet pipe and a water outlet pipe connected to the outside are respectively provided on opposite sides of the first cavity.

[0010] Preferably, a sealing ring is provided between the lower bottom surface around the upper plate body and the upper surface around the lower plate body.

[0011] Preferably, all of the first protrusions are hexagonal pyramids.

[0012] Preferably, the spacing distance of the first spacing is 0.2 mm.

[0013] Preferably, the water inlet pipe is fixedly arranged on one side of the lower plate body, and the water outlet pipe is fixedly arranged on one side of the upper plate body.

[0014] Preferably, a plurality of the first protrusions are evenly arranged in a rectangular array in the upper plate body.

[0015] Preferably, a plurality of the first protrusions are staggeredly arranged along a trapezoidal array in the upper plate body.

[0016] The beneficial effects of the utility model are:

[0017] (1) Through the design of several prism-shaped protrusions inside the plate body, the design of the entire liquid cooling plate is more suitable for stamping mold opening, with low production cost and convenient and fast processing; the integrity is good, and the upper and lower plates are well sealed after closing, and it is not easy to leak liquid; the structure is simple and easy to disassemble and clean.

[0018] (2) Through the mirror image design of the first protrusion and the second protrusion, the first spacing between the ear needles can control the heat exchange fluid in the liquid cooling plate within a reasonable volume range and provide sufficient turbulence. The spacing between the higher protrusions provides sufficient space for the full separation of the gas-liquid two phases. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the utility model;

[0021] Figure 2 This is a structural diagram of the lower plate of the second embodiment of the utility model;

[0022] Figure 3 It is a longitudinal cross-sectional view of the second embodiment of the utility model.

[0023] In the figure: 1, upper plate body; 2, lower plate body; 4, first protrusion; 5, second protrusion; 6, water inlet pipe; 7, water outlet pipe; 8, first partition. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 , is the first embodiment of the utility model, and this embodiment specifically discloses an aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system, including an upper plate body 1 and a lower plate body 2 made of integrated aluminum die-casting, and the lower bottom surface of the upper plate body 1 abuts against the upper surface of the lower plate body 2;

[0026] A sealed first cavity is provided between the upper plate body 1 and the lower plate body 2;

[0027] The upper plate body 1 is provided with a plurality of first protrusions 4 in the shape of a prism protruding downward in the first cavity, the lower plate body 2 is provided with a second protrusion 5 in the first cavity which is mirror-symmetrical with the first protrusion 4 along the horizontal plane, and a first gap 8 is provided between the lower surface of the first protrusion 4 and the upper surface of the second protrusion 5;

[0028] A water inlet pipe 6 and a water outlet pipe 7 communicating with the outside are respectively provided on opposite sides of the first cavity.

[0029] This embodiment uses the design of several prism-shaped protrusions inside the plate body to make the design of the entire liquid cooling plate more suitable for stamping and mold opening, with low production cost and convenient and fast processing; it has good integrity, good sealing after the upper and lower plates are closed, and is not easy to leak. Through the mirror design of the first protrusion 4 and the second protrusion 5, the first interval 8 between the ear needles can control the heat exchange fluid in the liquid cooling plate within a reasonable volume range and perform sufficient turbulence. The intervals between the higher protrusions provide sufficient space for the full separation of the gas and liquid phases. The overall structure of the utility model is simple and easy to disassemble and clean.

[0030] See also Figure 2 and Figure 3 , which is the second embodiment of the utility model. The difference between this embodiment and the first embodiment is that a sealing ring is provided between the lower bottom surface around the upper plate body 1 and the upper surface around the lower plate body 2 to further increase the sealing performance of the first cavity.

[0031] The overall structural dimensions of this embodiment are 55mm wide * 72mm long * 8mm high. The side walls of the first cavity are provided with a mold opening angle slightly inclined outward, and all the first protrusions 4 and the second protrusions 5 are regular hexagonal pyramids. The first protrusions 4 and the second protrusions 5 are mirror-imaged relative to each other, and are smaller as they get closer to the middle, which is suitable for a one-time mold opening for stamping.

[0032] The spacing distance of the first spacing 8 is 0.2 mm, so that the heat exchange fluid in the liquid cooling plate can be controlled within a reasonable volume range.

[0033] The water inlet pipe 6 is fixedly arranged on one side of the lower plate body 2, and the water outlet pipe 7 is fixedly arranged on one side of the upper plate body 1, so that the drain pipe on the upper side can better discharge the gas generated by the bubbling coolant.

[0034] In this embodiment, a plurality of first protrusions 4 are evenly arranged in a rectangular array in the upper plate body 1. In other embodiments, the first protrusions 4 can also be staggered in a trapezoidal array, that is, the second row is opposite to the gap of the first row. The first protrusions 4 and the second protrusions 5 can make the flow disturbance more uniform, and the water channel distribution formed is more reasonable. The height of the protrusions provides space for the full separation of the gas-liquid two phases.

[0035] The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above are only specific embodiments of the utility model and are not intended to limit the protection scope of the utility model. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An aluminum liquid cooling plate for a pump-driven two-phase liquid cooling system, characterized in that: include: The upper plate and the lower plate are made of aluminum integral die-cast forging, and the lower bottom surface of the upper plate abuts against the upper surface of the lower plate; A sealed first cavity is provided between the upper plate body and the lower plate body; The upper plate body is provided with a plurality of first protrusions in the shape of a prism protruding downward in the first cavity, the lower plate body is provided with a second protrusion in the first cavity that is mirror-symmetrical to the first protrusion along a horizontal plane, and a first gap is provided between the lower surface of the first protrusion and the upper surface of the second protrusion; A water inlet pipe and a water outlet pipe connected to the outside are respectively provided on opposite sides of the first cavity.

2. The aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system according to claim 1, characterized in that: A sealing ring is arranged between the lower bottom surface around the upper plate body and the upper surface around the lower plate body.

3. The aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system according to claim 1, characterized in that: All of the first protrusions are hexagonal pyramids.

4. The aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system according to claim 1, characterized in that: The interval distance of the first interval is 0.2 mm.

5. The aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system according to claim 1, characterized in that: The water inlet pipe is fixedly arranged on one side of the lower plate body, and the water outlet pipe is fixedly arranged on one side of the upper plate body.

6. The aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system according to claim 1, characterized in that: A plurality of the first protrusions are evenly arranged in a rectangular array in the upper plate body.

7. The aluminum liquid cooling plate of a pump-driven two-phase liquid cooling system according to claim 1, characterized in that: A plurality of the first protrusions are staggeredly arranged in a trapezoidal array in the upper plate body.

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