Immersed double-plate case

Abstract

The invention discloses an immersed double-plate case, and relates to the technical field of server cooling. A liquid cooling bin is arranged on one side in the outer box, a constant-pressure bin is arranged on one side of the liquid cooling bin, a plurality of servers are evenly distributed and installed on the bottom face in the liquid cooling bin, a plurality of limiting blocks are fixedly connected to the top of the liquid cooling bin, condensation bins are installed at the top ends of the limiting blocks, and condensation mechanisms are installed between the condensation bins and the constant-pressure bin. And a pressure regulating mechanism is mounted between the condensation bin and the condensation mechanism. By arranging the pressure adjusting mechanism and the condensation mechanism, the situation that the boiling point of cooling liquid is increased due to air pressure rise is effectively avoided while the internal sealing performance is maintained, protection is provided for all the immersed servers, and by arranging a pressure adjusting plate to be attached to a pressure control valve, the service life of the server is prolonged. The adaptive dynamic adjustment of the internal air pressure according to the operation condition of the server is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of server cooling, and in particular to an immersed double-board chassis. Background Art

[0002] With the rapid development of modern digital storage devices, various types of servers have higher and higher requirements for heat dissipation. Traditional air cooling and water cooling can no longer meet the heat dissipation needs of such cluster servers. Among the many new heat dissipation solutions, liquid cooling is more common, which mainly includes cold plate liquid cooling servers and fully immersed liquid cooling servers. The liquid of the cold plate liquid cooling server does not directly contact the server, and the heat of the server is taken away by the liquid cooling plate installed inside the server. The fully immersed liquid cooling server immerses the server in or directly contacts the coolant in other ways. Compared with the cold plate liquid cooling server, the fully immersed liquid cooling server with direct contact heat dissipation has a better heat dissipation effect.

[0003] The patent specification with publication number CN111988965B discloses an immersion phase change cooling chassis for high-heat electronic equipment, including a shell, a chassis arranged in the middle position inside the shell, a left heat dissipation chamber arranged on one side of the chassis, a right heat dissipation chamber arranged on the other side of the chassis, an evaporator is fixedly installed on the inner wall of the left heat dissipation chamber, one end of the evaporator is fixedly connected to pipeline one, a compressor is fixedly installed on pipeline one, a condenser is arranged on one side of the compressor, a throttle valve is arranged on one side of the condenser, and a condenser pipe is fixedly connected to one end of pipeline one.

[0004] This type of chassis divides the inside of the chassis into two heat dissipation chambers and a chassis, and uses a plurality of linear condensing tubes in the chassis to recover the vaporized coolant, and transmits the gaseous coolant that has not been liquefied in time to a heat dissipation chamber on one side through a fan for re-condensation and transmission back to the chassis. The disadvantage of this technical solution is that since the servers in the chassis are installed in a cluster, their heat generation rate is affected by a large number of user-end access peaks, and the temperature will rise sharply. At this time, the vaporization rate of the coolant is increased. Although the chassis is connected to the heat exchange chamber, in order to prevent the coolant from leaking, the overall space available for the vaporized coolant is fixed. Therefore, the presence of a large amount of vaporized coolant will quickly increase the air pressure in the chassis in a short period of time. At this time, the boiling point of the liquid coolant will rise. The increase in the boiling point will keep the coolant that needs to be vaporized and dissipated in a liquefied state, thereby burning some server components that exceed the critical temperature value, affecting the safe use of the server. Summary of the invention

[0005] The purpose of the present invention is to provide an immersed double-board chassis, and the technical problems to be solved are as follows: the air pressure changes in the existing immersed server chassis are relatively unstable, affecting the normal use of the coolant.

[0006] The purpose of the present invention can be achieved through the following technical solutions: An immersed dual-board chassis comprises an outer box, a liquid cooling bin is arranged on one side of the inner part of the outer box, a constant pressure bin is arranged on one side of the liquid cooling bin, a plurality of servers are evenly arranged and installed on the inner bottom surface of the liquid cooling bin, a plurality of limit blocks are fixedly connected to the top of the liquid cooling bin, a condensation bin is installed on the top of each limit block, a condensation mechanism is installed between the condensation bin and the constant pressure bin, a pressure regulating mechanism is installed between the condensation bin and the condensation mechanism, and the pressure regulating mechanism is used to regulate the air pressure in the liquid cooling bin.

[0007] As a further solution of the present invention: a sealing cover is provided at the top of the outer box, and a ventilation window is provided at one side of the constant pressure chamber.

[0008] As a further solution of the present invention: the condensation mechanism includes a plurality of air inlet holes evenly arranged on the bottom surface of the condensation bin, a liquid inlet pipe and a liquid outlet pipe are installed on the side of the condensation bin close to the constant pressure bin, a plurality of liquid inlet branch pipes are evenly arranged on one side of the liquid inlet pipe, a plurality of liquid outlet branch pipes are evenly arranged on one side of the liquid outlet pipe, and a condensation pipe is installed between the vertically adjacent liquid inlet branch pipes and the liquid outlet branch pipes.

[0009] As a further solution of the present invention: the condenser is continuously bent in the vertical direction, the side of the liquid inlet pipe away from the liquid inlet branch pipe passes through the liquid cooling bin and is equipped with a liquid inlet main pipe, one side of the liquid inlet main pipe is equipped with a pressure control valve, and the side of the liquid outlet pipe away from the liquid outlet branch pipe passes through the liquid cooling bin and is equipped with a liquid outlet main pipe.

[0010] As a further solution of the present invention: the pressure regulating mechanism includes an air window, and the air window is arranged on the upper part of the adjacent surfaces of the liquid cooling chamber and the constant pressure chamber. The outer side of the liquid cooling chamber is adapted to the air window and fixedly connected with an air box. A balloon is installed inside the air box, one side of the balloon is fixedly connected to the air window, one side of the air box is fixedly connected with multiple springs, and a pressure regulating plate is fixedly connected between one side of each of the springs.

[0011] As a further solution of the present invention: the outer side of the balloon is fitted with the inner side of the air box, and one side of the balloon is fixedly connected to the air window.

[0012] As a further solution of the present invention: one side of the pressure regulating plate is in contact with the pressure control valve.

[0013] Beneficial effects of the present invention: The present invention provides a pressure regulating mechanism and a condensing mechanism. After each server is installed in a liquid cooling bin and injected with coolant, heat is generated during operation to cause the coolant to vaporize. The vaporized coolant absorbs heat through a large number of condensing tubes that are continuously bent in the condensing bin, returns to a liquid state, and falls back. At the same time, the vaporization causes the air pressure in the liquid cooling bin to increase. The balloon of standard atmospheric pressure on one side is deformed to become larger and pushes open the pressure regulating plate to communicate with the atmosphere to buffer the internal pressure, so that the air pressure in the liquid cooling bin is always in a relatively stable state. While maintaining the internal sealing, the situation in which the boiling point of the coolant increases due to the increase in air pressure is effectively avoided, thereby providing protection for the immersed servers. Furthermore, by setting the pressure regulating plate in close contact with the pressure control valve, since the air pressure inside the liquid cooling warehouse is affected by the operating load state of each server, there are changes in the air pressure, and the change in air pressure affects the balloon deformation, and the balloon deformation controls the expansion and contraction state of the pressure regulating plate, thereby controlling the size of the contact force between the pressure regulating plate and the pressure control valve, thereby regulating the input amount of condensate, that is, realizing adaptive dynamic adjustment of the internal air pressure according to the operating conditions of the server, effectively stabilizing the internal air pressure while avoiding energy waste caused by continuous high-flow input of condensate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the liquid cooling bin of the present invention; Figure 3 It is a partial cross-sectional view of the present invention; Figure 4 The present invention Figure 3 A magnified detail of the center point A; Figure 5 This is a partial cross-sectional view of the outer side of the liquid cooling bin of the present invention; Figure 6 The present invention Figure 5 Enlarged detail of point B in the middle.

[0016] In the figure: 1. Outer box; 2. Liquid cooling chamber; 3. Constant pressure chamber; 4. Server; 5. Limit block; 6. Condensation chamber; 7. Condensation mechanism; 71. Air inlet; 72. Liquid inlet pipe; 73. Liquid outlet pipe; 74. Liquid inlet branch pipe; 75. Liquid outlet branch pipe; 76. Condensation pipe; 77. Liquid inlet main pipe; 78. Pressure control valve; 79. Liquid outlet main pipe; 8. Pressure regulating mechanism; 81. Air window; 82. Air box; 83. Balloon; 84. Spring; 85. Pressure regulating plate; 9. Cover; 10. Ventilation window. DETAILED DESCRIPTION

[0017] The following will be combined with the 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 without creative work are within the scope of protection of the present invention.

[0018] like Figures 1 to 6 As shown, an immersed double-board chassis includes an outer box 1, a liquid cooling chamber 2 is arranged on one side of the inner part of the outer box 1, a constant pressure chamber 3 is arranged on one side of the liquid cooling chamber 2, a plurality of servers 4 are evenly arranged and installed on the bottom surface of the inner part of the liquid cooling chamber 2, each server 4 is in the cooling liquid, four limit blocks 5 are fixedly connected to the top of the liquid cooling chamber 2, a condensing chamber 6 is installed on the top of each limit block 5, a condensing mechanism 7 is installed between the condensing chamber 6 and the constant pressure chamber 3, a pressure regulating mechanism 8 is installed between the condensing chamber 6 and the condensing mechanism 7, and the pressure regulating mechanism 8 is used to regulate the air pressure in the liquid cooling chamber 2, and a sealing cover 9 is arranged on the top of the outer box 1; It should be noted that in the process of installing the server 4, first open the lock hole at the top of the cover 9, and open the cover 9 with the help of the handle on one side, then install each server 4 on the bottom surface inside the liquid cooling bin 2, then place the condensation bin 6 on each limit block 5, and finally lock the cover 9 to make the space inside the liquid cooling bin 2 in a sealed state to avoid leakage of vaporized coolant. In addition, the coolant is preferably 3M hatching liquid, and a ventilation window 10 is set on one side of the constant pressure bin 3 for connecting with the atmosphere and balancing the air pressure in the constant pressure bin 3. The limit blocks 5 are fixedly connected at four angles above the cooling liquid surface of the liquid cooling bin 2, and are in the same plane to jointly support the condensation bin 6.

[0019] like Figures 2 to 5 As shown, the condensing mechanism 7 includes a large number of air inlet holes 71 evenly arranged on the bottom surface of the condensing bin 6, a liquid inlet pipe 72 and a liquid outlet pipe 73 are installed on the side of the condensing bin 6 close to the constant pressure bin 3, a large number of liquid inlet branch pipes 74 are evenly arranged on one side of the liquid inlet pipe 72, a large number of liquid outlet branch pipes 75 are evenly arranged on one side of the liquid outlet pipe 73, a condensing pipe 76 is installed between the vertically adjacent liquid inlet branch pipes 74 and the liquid outlet branch pipes 75, specifically, the condensing pipe 76 is in a continuous bending state in the vertical direction, a liquid inlet main pipe 77 is installed on the side of the liquid inlet pipe 72 away from the liquid inlet branch pipe 74, penetrating the liquid cooling bin 2, a pressure control valve 78 is installed on one side of the liquid inlet main pipe 77, and a liquid outlet main pipe 79 is installed on the side of the liquid outlet pipe 73 away from the liquid outlet branch pipe 75, penetrating the liquid cooling bin 2; It should be noted that the liquid inlet main pipe 77 and the liquid outlet main pipe 79 continue to penetrate the constant pressure chamber 3 and extend to the outside of the outer box 1 after penetrating the liquid cooling chamber 2, and return to the power pump of the condensate source after circulating heat dissipation at the external cooling tower, forming a circulating heat dissipation of the condensate. The pressure control valve 78 is a pressure-sensitive fluid valve, and the amount of condensate it controls is affected by the pressure of the valve, that is, the pressure of the pressure control valve 78 increases, the internal flow of the liquid inlet main pipe 77 increases, and the pressure of the pressure control valve 78 decreases, and the internal flow decreases; Specifically, when the operating pressure of the server 4 increases, the coolant is vaporized by heat, and the vaporized coolant enters the condensation bin 6 through the air inlet 71. At the same time, the condensate entering the condensation bin 6 from the liquid inlet main pipe 77 is discharged from the liquid outlet main pipe 79 through the continuously bent condensation tube 76. When the vaporized coolant contacts the condensation tube 76, it transfers energy to the circulating condensate. At the same time, the coolant formed by the cold releases heat and returns to liquid, and finally drips and gathers from the air inlet 71 to the bottom of the cold liquid cold bin 2.

[0020] The pressure regulating mechanism 8 includes an air window 81, which is arranged at the upper position of the adjacent surface of the liquid cooling chamber 2 and the constant pressure chamber 3. Specifically, since the condensation chamber 6 is installed at the top of the liquid cooling chamber 2, the bottom is used to install the server 4, and the server 4 is immersed in the coolant, so that the liquid cooling chamber 2 is in a state of gas-liquid mixing when in use, and the air window 81 is arranged above the coolant surface. The air box 82 is fixedly connected to the air window 81 on the outside of the liquid cooling chamber 2, and a balloon 83 is installed in the air box 82. One side of the balloon 83 is fixedly connected to the air window 81, and a large number of springs 84 are evenly fixedly connected along the edge of one side of the air box 82, and a pressure regulating plate 85 is fixedly connected between each spring 84; It should be noted that the outer side of the balloon 83 is in contact with the inner side of the air box 82, and the balloon 83 is at standard atmospheric pressure when not under pressure. It is preferably a nitrogen balloon at standard atmospheric pressure. The sphere is made of highly elastic synthetic rubber as a whole, and one side of the sphere is fixedly connected to the air window 81 to seal the air window 81 to prevent the vaporized coolant from overflowing from here. Specifically, when the server 4 is running at high speed, a large amount of coolant vaporizes, which will cause the air pressure in the liquid cooling warehouse 2 to rise rapidly. At this time, since the air pressure value inside the balloon 83 is less than the internal air pressure value, this part of the air pressure will squeeze the balloon 83. The deformation of the balloon 83 pushes the pressure regulating plate 85 on the outside which is movably installed by the spring 84, and the outer side of the balloon 83 is connected to the atmosphere by means of the constant pressure warehouse 3. The side adjacent to the pressure regulating plate 85 releases the pressure value of the internal air pressure by squeezing the pressure regulating plate 85, thereby preventing the vapor coolant from leaking out while effectively reducing the internal air pressure value, thereby avoiding the situation where the boiling point of the coolant increases due to the increase in internal air pressure, and providing a stable temperature for the immersed server 4.

[0021] like Figure 5 and Figure 6 As shown, one side of the pressure regulating plate 85 is in contact with the pressure control valve 78; It should be noted that since the pressure control valve 78 is an elastic control valve used to regulate the condensate, when the balloon 83 is at standard atmospheric pressure, the pressure regulating plate 85 is in a natural state and only fits the pressure control valve 78. The pressure control valve 78 is not subjected to force and is in a closed state at this time. When the internal air pressure increases, the balloon 83 deforms and squeezes the pressure regulating plate 85, and the pressure regulating plate 85 simultaneously squeezes the pressure control valve 78. The higher the pressure on the pressure regulating plate 85, the greater the pressure on the pressure control valve 78. At the same time, the higher the air pressure inside the liquid cooling warehouse 2, that is, when the operating pressure of the server 4 is higher, the greater the flow rate of the condensate flowing in under the control of the pressure control valve 78, the stronger the condensation effect, and the more significant the pressure reduction effect, thereby achieving the effect of dynamic pressure regulation, and this dynamic adjustment process is positively correlated with the peak and low peak usage of the server 4, thereby ensuring the safety of the server 4 during use and avoiding the energy waste of always inputting large doses of condensate.

[0022] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. An immersed dual-board chassis, comprising an outer box (1), a liquid cooling chamber (2) being arranged on one side of the inner part of the outer box (1), a constant pressure chamber (3) being arranged on one side of the liquid cooling chamber (2), a plurality of servers (4) being evenly arranged and installed on the inner bottom surface of the liquid cooling chamber (2), characterized in that: A plurality of limit blocks (5) are fixedly connected to the top of the liquid cooling bin (2), a condensation bin (6) is installed on the top of each limit block (5), a condensation mechanism (7) is installed between the condensation bin (6) and the constant pressure bin (3), a pressure regulating mechanism (8) is installed between the condensation bin (6) and the condensation mechanism (7), and the pressure regulating mechanism (8) is used to regulate the air pressure in the liquid cooling bin (2).

2. The submerged dual-board chassis according to claim 1, characterized in that: The top of the outer box (1) is provided with a sealing cover (9), and one side of the constant pressure chamber (3) is provided with a ventilation window (10).

3. The submerged double-board chassis according to claim 1, characterized in that: The condensation mechanism (7) comprises a plurality of air inlet holes (71) evenly arranged on the bottom surface of the condensation chamber (6); a liquid inlet pipe (72) and a liquid outlet pipe (73) are installed on a side of the condensation chamber (6) close to the constant pressure chamber (3); a plurality of liquid inlet branch pipes (74) are evenly arranged on one side of the liquid inlet pipe (72); a plurality of liquid outlet branch pipes (75) are evenly arranged on one side of the liquid outlet pipe (73); and a condensation pipe (76) is installed between the vertically adjacent liquid inlet branch pipes (74) and liquid outlet branch pipes (75).

4. The submerged double-board chassis according to claim 3, characterized in that: The condenser tube (76) is in a continuously bent state in the vertical direction; the side of the liquid inlet tube (72) away from the liquid inlet branch tube (74) passes through the liquid cooling bin (2) and is provided with a liquid inlet main tube (77); a pressure control valve (78) is provided on one side of the liquid inlet main tube (77); and the side of the liquid outlet tube (73) away from the liquid outlet branch tube (75) passes through the liquid cooling bin (2) and is provided with a liquid outlet main tube (79).

5. The submerged double-board chassis according to claim 4, characterized in that: The pressure regulating mechanism (8) comprises an air window (81), wherein the air window (81) is arranged at the upper part of the adjacent surfaces of the liquid cooling chamber (2) and the constant pressure chamber (3); an air box (82) is fixedly connected to the air window (81) on the outer side of the liquid cooling chamber (2); a balloon (83) is installed inside the air box (82); one side of the balloon (83) is fixedly connected to the air window (81); one side of the air box (82) is fixedly connected to a plurality of springs (84); and a pressure regulating plate (85) is fixedly connected between one side of each of the springs (84).

6. The submerged double-board chassis according to claim 5, characterized in that: The outer side of the balloon (83) is in contact with the inner side of the air box (82), and one side of the balloon (83) is fixedly connected to the air window (81).

7. The submerged double-board chassis according to claim 5, characterized in that: One side of the pressure regulating plate (85) is in contact with the pressure control valve (78).

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