A blade server

Abstract

The present invention discloses a blade server, comprising: a blade, the blade comprising a blade body, a shell, and an upper cover, a sealed accommodation area for accommodating the blade body is formed between the shell and the upper cover; a liquid inlet valve connected to the accommodation area and an air outlet valve connected to the gas phase area of ​​the accommodation area are arranged on the side wall of the shell. The above technical solution of the present invention provides a fully enclosed blade server, which adopts liquid cooling and full immersion heat dissipation, and ensures the smooth operation of the cold liquid circulation system inside the blade, prevents the cold liquid from overflowing, and facilitates the upgrade and maintenance of the server.

Description

Technical Field

[0001] The present invention relates to the technical field of high-performance data processing equipment, and in particular to a fully immersed liquid-cooled blade server. Background Art

[0002] At present, most machines use air cooling as the heat dissipation method. Depending on the application environment, traditional air cooling will bring unnecessary materials and increase the system space, while conduction cooling will encounter a heat dissipation bottleneck when facing a high-power system. The emergence of liquid cooling technology, because the liquid medium has a better heat transfer coefficient than air and conventional heat dissipation aluminum materials, makes the heat dissipation level of the liquid cooling system even more than 100 times that of traditional air cooling and conduction cooling.

[0003] Generally, liquid cooling systems dissipate heat through cold plate modules and liquid cooling chassis. The cold liquid circulates in the cold plate to remove the heat in the chassis. However, this method does not cause phase change in the cold liquid, which is not ideal for ultra-large equipment with high heat concentration. For every 10°C increase in server temperature, the reliability may be reduced to half of the original. An effective thermal design model is to use appropriate cooling technology and structural design for the heat-generating components and heat dissipation systems of electronic equipment. Through the thermal principle of evaporative cooling, the cold liquid is vaporized to remove heat. Since the latent heat of vaporization of the liquid is much larger than the specific heat, the evaporative cooling effect is more obvious, which can more effectively ensure the normal and reliable operation of electronic equipment or systems. Full immersion liquid cooling has higher heat dissipation efficiency. Continuous improvement of the full immersion liquid cooling system is needed.

[0004] At present, conventional servers on the market have internal components that basically adopt a solid structure. The mechanism of each module is to permanently fix it on the main chassis shell, which is inconvenient for production and assembly, and daily maintenance is very inconvenient. At the same time, there are relatively few design considerations in terms of chassis vibration and wiring. It is impossible to achieve modularization of various components in the server. And because the components are already fixed, daily maintenance and updates and upgrades of the server will be difficult. Summary of the invention

[0005] In view of the problems existing in the related art, the present invention proposes a blade server, which can ensure the safe, reliable, convenient and efficient operation of the server.

[0006] The technical solution of the present invention is achieved in this way:

[0007] According to one aspect of the present invention, there is provided a blade server, comprising: a blade, the blade comprising a blade body, a shell, and an upper cover, a sealed accommodation area for accommodating the blade body is formed between the shell and the upper cover; a liquid inlet valve connected to the accommodation area, and an air outlet valve connected to the gas phase region of the accommodation area are arranged on the side wall of the shell.

[0008] According to an embodiment of the present invention, the blade server also includes a sealing ring; wherein the side wall of the shell has an upper end surface, and a recessed portion is arranged on the outer side of the upper end surface. When the upper cover contacts the shell, the sealing ring is embedded in the recessed portion and is squeezed.

[0009] According to an embodiment of the present invention, the side wall of the housing has an outer surface, a plurality of protrusions are arranged on the outer surface, and threaded holes for connecting with the upper cover are arranged on the protrusions.

[0010] According to an embodiment of the present invention, a power data exchange connector connected to the blade body is also provided on the side wall.

[0011] According to an embodiment of the present invention, a plurality of guide posts are further provided on the side wall, and the guide posts extend in a direction perpendicular to the side wall.

[0012] According to an embodiment of the present invention, in the containing area, a boiling stop plate is provided at the boundary between the cold liquid surface and the gas phase area, and the boiling stop plate has a plurality of through holes.

[0013] According to an embodiment of the present invention, a heat conducting plate is arranged on the heating device of the blade body, an indium sheet is arranged between the heat conducting plate and the heating device, and a copper foil is arranged on the surface of the heat conducting plate.

[0014] According to an embodiment of the present invention, a reinforcement plate is further provided on the side wall. The reinforcement plate is provided adjacent to the power data exchange connector, and the reinforcement plate extends in a direction perpendicular to the side wall.

[0015] According to an embodiment of the present invention, a mechanical pressure regulating valve communicating with the gas phase region is further provided on the side wall of the shell.

[0016] According to an embodiment of the present invention, the blade body includes any one or more of a GPU module, a CPU module, a plug-in card module, and a DC board.

[0017] The present invention makes the interior of the blade a closed cavity, and the electronic components running on the blade body can be completely immersed in non-conductive low-boiling point cold liquid. The operation of the server system will not be affected by changes in the external environment, and the environmental requirements are relatively low; the gas and liquid in the blade are circulated by configuring a liquid inlet valve and an air outlet valve, which is beneficial to the phase change of the cold liquid inside, and the heat dissipation efficiency is effectively improved by using the evaporative cooling principle; the blade server of the present invention has an independent system inside the blade, which realizes the modularization of the server, and the number of blades can be appropriately increased or decreased according to needs, making daily maintenance and upgrade use more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 is a three-dimensional front view schematic diagram of a blade server according to an embodiment of the present invention;

[0020] Figure 2 is a top view of a blade server according to an embodiment of the present invention with an upper cover removed;

[0021] Figure 3 A three-dimensional rear view schematic diagram of a blade server according to an embodiment of the present invention.

[0022]

Explanation of symbols

[0023] 1-Upper cover; 2-Sealing ring;

[0024] 3-exhaust valve; 4-guide column;

[0025] 5-Mechanical pressure regulating valve; 6-Liquid inlet valve;

[0026] 7-power data exchange connector; 8-reinforcement plate;

[0027] 9-slide rail; 10-housing;

[0028] 12-handle; 13-high and low liquid level sensor module;

[0029] 14-heat conducting plate; 15-GPU module;

[0030] 16-card module; 17-CPU module;

[0031] 18-stop boiling plate; 19-high voltage direct current plate. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0033] Combination Figures 1 to 3As shown, a blade server according to an embodiment of the present invention includes: a blade, the blade including a blade body, a shell 10, and an upper cover 1, a sealed accommodating area for accommodating the blade body is formed between the shell 10 and the upper cover 1; a liquid inlet valve 6 connected to the accommodating area, and an air outlet valve 3 connected to the gas phase area of ​​the accommodating area are arranged on the side wall of the shell 10.

[0034] The above technical scheme of the present invention is based on the full immersion liquid cooling method. Since the interior of the blade is a closed cavity, the electronic components running on the blade body can be completely immersed in the non-conductive low-boiling point cold liquid. Even if the server system is placed in an environment with relatively harsh external conditions such as large ambient temperature changes, high air humidity, and severe dust and haze, such as tropical islands, the operation of the server system will not be affected by changes in the external environment, and the requirements for the environment are relatively low. By configuring the liquid inlet valve 6 and the air outlet valve 3, the gas and liquid inside the blade form a cycle, which is conducive to the phase change of the cold liquid inside, and the heat dissipation efficiency is effectively improved by the evaporative cooling principle. The blade of the blade server of the present invention is an independent system, which realizes the modularization of the server, and the number of blades can be appropriately increased or decreased according to needs, making daily maintenance and upgrade use more convenient and efficient.

[0035] In some embodiments, the blade body includes any one or more of a GPU module, a CPU module, a plug-in card module, and a DC board. Figure 2 In the embodiment shown, the blade body mainly includes a GPU module 15, a card module 16, a CPU module 17, and a high-voltage DC board 19. The number of GPU modules 15 and CPU modules 17 can be adjusted appropriately according to needs to reduce resource waste. The high-voltage DC board 19 provides a DC voltage to the circuit board in the blade, with an external input voltage of 300V and an output of 12V DC voltage to ensure safe operation of the circuit.

[0036] like Figure 2 As shown, in one embodiment, the blade server further includes: a sealing ring 2; wherein the side wall of the shell 10 has an upper end surface, and a recessed portion is provided on the outer side of the upper end surface. When the upper cover 1 contacts the shell 10, the sealing ring 2 is embedded in the recessed portion, and the sealing ring 2 is squeezed to ensure sealing.

[0037] Combination Figure 1 and Figure 3 As shown, the side wall of the housing 10 has an outer surface, on which a plurality of protrusions are arranged, and the protrusions are provided with threaded holes for connecting with the upper cover 1. A piece of protrusion is provided at intervals around the upper end of the housing 10, and threaded holes are punched from top to bottom for connecting the housing 10 and the end cover. A circle of grooves is provided on the outer side of the upper end surface of the housing 10 to limit the movement of the rubber ring.

[0038] Combination Figures 1 to 3As shown, in one embodiment, a power data exchange connector 7 connected to the blade body is also provided on the side wall. The blades of the blade server of the present invention are an independent system, and data can be exchanged between blades, which is convenient for hot plugging, realizing the modularization of the server, and the number of blades can be appropriately increased or decreased as needed, making daily maintenance and upgrade use more convenient and efficient.

[0039] A reinforcing plate 8 may also be provided on the side wall, and the reinforcing plate 8 is provided adjacent to the power data exchange connector 7. Figures 1 to 3 As shown, the reinforcing plate 8 is fixed at the rear end of the blade and is located above the plug board at the rear end of the blade, and can protect the electronic components on the plug board, such as the power data exchange connector 7.

[0040] In one embodiment, a plurality of guide posts 4 are further provided on the side wall, and the guide posts 4 extend in a direction perpendicular to the side wall. Figures 1 to 3 The example shows a case where the number of guide posts 4 is three. The guide posts 4 can ensure that the blade is smoothly inserted into the plug of the chassis. Specifically, the blade needs to be stood up on its side when inserted into the chassis, and the two side slide rails 9 cooperate with the slide rails 9 corresponding to the upper and lower ends of the chassis. The slide rails 9 on both sides of the blade can make the blade more flexible to plug and unplug, and the introduction position more accurate. When the blade is inserted into the chassis, when the blade is about to contact the contactor of the chassis, the guide close to the slide rails 9 cannot accurately connect the blade to the contactor of the chassis. However, due to the deformation of the chassis panel and the gap between the slide rails 9, the upper and lower ends of the blade cannot be accurately positioned after insertion, so three guide posts 4 are set at the rear end of the blade, which ensures accurate guidance of the blade during insertion and ensures that the blade is smoothly inserted into the plug of the chassis.

[0041] In one embodiment, in the containing area, a stop-boiling plate 18 is provided at the boundary between the cold liquid surface and the gas phase area, and the stop-boiling plate 18 has a plurality of through holes. Preferably, the plurality of through holes on the stop-boiling plate 18 are evenly arranged. After the cold liquid is filled into the blade, the heating device generates heat, which causes the cold liquid to boil. In order to prevent the boiling from excessively impacting the electronic components inside the blade and causing damage, the stop-boiling plate 18 is provided near the boundary between the cold liquid surface and the gas phase area. After the cold liquid boils and undergoes phase change and gasification, it gathers on the stop-boiling plate 18 and is discharged from the blade through the outlet valve 3, taking away a large amount of heat.

[0042] In one embodiment, a heat conducting plate 14 is provided on the heating device of the blade body, an indium sheet is provided between the heat conducting plate 14 and the heating device, and a copper foil is provided on the surface of the heat conducting plate 14. The heating device may include a CPU and a GPU, the heat conducting plate 14 is pressed on the surface of the CPU and the GPU, and an indium sheet is placed between the heat conducting plate 14 and the CPU and the GPU. A rough copper foil may be attached to the heat conducting plate 14 to increase the contact area between the surface of the heating device and the cold liquid and accelerate the gasification of the cold liquid.

[0043] refer to Figure 1 and Figure 3 As shown, in one embodiment, a mechanical pressure regulating valve 5 connected to the gas phase region is also provided on the side wall of the shell 10. The interface of the mechanical pressure regulating valve 5 inside the blade is also located in the gasification zone above the gas-liquid interface. When the external power is off or an emergency occurs, causing the heat exchange system to stop suddenly, but the heating device is still generating heat, in order to avoid damage to the blade caused by excessive internal air pressure, when the internal pressure reaches a certain value, the mechanical pressure regulating valve 5 can automatically open to release air. Optionally, the interfaces of the three valves, the air outlet valve 3, the mechanical pressure regulating valve 5, and the liquid inlet valve 6 on the shell 10 are male, and the female is fixed to the corresponding position of the box. After the blade is inserted into the box, ensure that the interfaces of the blade are connected to the interfaces on the chassis.

[0044] refer to Figure 1 and Figure 2 As shown, when the blade is inserted into the chassis, the slide rail 9 on the side of the air outlet valve 3 is located on the upper side, and the slide rail 9 on the side of the reinforcement plate 8 is located on the lower side. When the blade is filled with cold liquid, in order to prevent the cold liquid from blocking the channels of the air outlet valve 3 and the mechanical pressure regulating valve 5, the gas-liquid interface in the blade should be lower than the air outlet valve 3 and the mechanical pressure regulating valve 5. In order to achieve this feature, a high and low liquid level sensor module 13 can be added near the set standard interface. The high and low liquid level sensor module 13 is connected to the electromagnetic valve that controls the interface of the liquid inlet valve 6. When the liquid level is lower than the standard interface, the high and low liquid level sensor module 13 sends a signal to the electromagnetic valve to control the interface of the liquid inlet valve 6 to open and fill the cold liquid; when the liquid level is higher than the standard interface, the high and low liquid level sensor module 13 sends a signal to the electromagnetic valve to control the interface of the liquid inlet valve 6 to close, and the filling of cold liquid is prohibited.

[0045] like Figure 1 As shown, threaded holes are provided in two grooves at the lower end of the housing 10 of the blade, and the blade handle 12 is fixed to the housing 10 through threaded connection, so as to facilitate the disassembly and assembly of the blade on the chassis.

[0046] To sum up, with the help of the above technical scheme of the present invention, this device is based on a full immersion liquid cooling method. Since the inside of the blade is a closed cavity, the running electronic components can be completely immersed in non-conductive, low-boiling-point cold liquid. Even if the server is placed in an environment with relatively harsh external conditions such as large changes in ambient temperature, high air humidity, severe dust and haze, such as tropical islands, the operation of the server will not be affected by changes in the external environment, and the requirements for the environment are relatively low; this device is equipped with a liquid inlet valve and an air outlet valve to form a circulation of internal gas and liquid, which is beneficial to the phase change of the cold liquid inside, and effectively improves the heat dissipation efficiency by means of the evaporative cooling principle; this blade server has a complete set of small systems inside the blade, and data can be exchanged between blades, which is convenient for hot plugging, realizing the modularization of the server, and the number of blades can be appropriately increased or decreased according to needs, making daily maintenance and upgrade use more convenient and efficient.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A blade server, characterized in that: include: A blade, the blade comprising a blade body, a shell, and an upper cover, wherein a sealed accommodation area for accommodating the blade body is formed between the shell and the upper cover; A liquid inlet valve connected to the accommodating area and an air outlet valve connected to the gas phase zone of the accommodating area are arranged on the side wall of the shell. The accommodating area is filled with cold liquid, and the electronic components running on the blade body are completely immersed in the cold liquid. In the accommodating area, a boiling-stop plate is arranged at the boundary between the liquid surface of the cold liquid and the gas phase zone, and the boiling-stop plate has a plurality of evenly arranged through holes, and the boiling-stop plate separates the liquid surface of the cold liquid from the liquid inlet valve.

2. The blade server according to claim 1, characterized in that: Also includes: Sealing ring; The side wall of the shell has an upper end surface, and a recessed portion is arranged on the outer side of the upper end surface. When the upper cover contacts the shell, the sealing ring is embedded in the recessed portion and is squeezed.

3. The blade server according to claim 2, characterized in that: The side wall of the shell has an outer surface, a plurality of protrusions are arranged on the outer surface, and threaded holes for connecting with the upper cover are arranged on the protrusions.

4. The blade server according to claim 1, characterized in that: The side wall is also provided with a power data exchange connector connected to the blade body.

5. The blade server according to claim 1, characterized in that: A plurality of guide posts are also arranged on the side wall, and the guide posts extend in a direction perpendicular to the side wall.

6. The blade server according to claim 1, characterized in that: A heat conducting plate is arranged on the heating device of the blade body, an indium sheet is arranged between the heat conducting plate and the heating device, and a copper foil is arranged on the surface of the heat conducting plate.

7. The blade server according to claim 4, characterized in that: A reinforcing plate is also arranged on the side wall. The reinforcing plate is arranged adjacent to the power data exchange connector and extends in a direction perpendicular to the side wall.

8. The blade server according to claim 1, characterized in that: A mechanical pressure regulating valve communicating with the gas phase region is also arranged on the side wall of the shell.

9. The blade server according to any one of claims 1 to 8, characterized in that: The electronic components of the blade body include any one or more of a GPU module, a CPU module, a plug-in card module, and a DC board.

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