CN112000193A

CN112000193A - Immersed phase change liquid cooling server heat dissipation case

Info

Publication number: CN112000193A
Application number: CN202010864076.4A
Authority: CN
Inventors: 冯文武
Original assignee: Guangzhou Qianheng Information Engineering Technology Co ltd
Current assignee: Guangzhou Qianheng Information Engineering Technology Co ltd
Priority date: 2020-08-25
Filing date: 2020-08-25
Publication date: 2020-11-27

Abstract

The invention discloses an immersed phase change liquid cooling server heat dissipation case which comprises a sealing case body and a sealing cover plate used for sealing the sealing case body. The sealed box body is provided with a liquid phase area and a gas phase area, heat-conducting engineering liquid is contained in the liquid phase area, a mainboard of the server unit is immersed in the engineering liquid, a connecting plate of the server unit is exposed in the gas phase area, and an indicator light used for displaying the current running state of the server unit is arranged on the connecting plate. The gas phase area is provided with a transparent window for checking the state of the indicator light. The sealed box body is divided into the liquid phase area and the gas phase area, the transparent window is arranged in the gas phase area, the mainboard of the server unit is placed in the liquid phase area, and the connecting plate of the server unit is exposed in the gas phase area. Therefore, the operation state of each server unit can be directly checked through the transparent window without frequently opening the sealing cover plate for checking.

Description

Immersed phase change liquid cooling server heat dissipation case

Technical Field

The invention relates to the technical field of server heat dissipation, in particular to an immersed phase-change liquid-cooled server heat dissipation case.

Background

How to effectively and rapidly dissipate the heat inside the high-heat-density server is always a concern of the industry, and along with the perfect technical development of the chip cold plate and the enhanced heat exchange of the cooling liquid, the liquid cooling becomes a new development trend.

Liquid cooling means that air is replaced by liquid, and heat generated when devices such as a CPU, a memory bank, a chip set, an expansion card and the like run is taken away. Liquid cooling can be divided into water cooling and other media cooling according to the heat transfer medium, and other media that can be used include mineral oil, electronic fluorinated liquid, and the like. According to the cooling principle, the liquid cooling can be divided into two heat dissipation modes of cold plate type liquid cooling (indirect cooling) and immersed type liquid cooling (direct cooling).

The immersion liquid cooling is realized by arranging the server unit in a bracket of a case, filling insulating and heat-conducting engineering liquid in the case, directly contacting all hardware in the server unit with the engineering liquid, automatically evaporating when the hardware absorbs heat to reach a liquid saturation temperature (40-60 ℃), and taking heat out by using liquid vaporization latent heat. The machine is internally provided with a condensation copper pipe, which can condense the vaporized engineering liquid into liquid, thus realizing self-circulation to dissipate heat.

Because the server is in a state of working for a long time, the case can not be opened generally, and maintainers are difficult to directly obtain the internal condition of the case, and need to open for maintenance every time, which brings inconvenience to the maintainers in work. And the vaporized engineering liquid inside after being opened can be diffused outwards, which causes the waste of the engineering liquid.

Disclosure of Invention

In view of the problems in the prior art, a primary object of the present invention is to provide an immersion type phase change liquid cooling server heat dissipation case, which can quickly acquire the working condition and heat dissipation condition of the server unit inside the case without opening the case.

In order to achieve the purpose, the immersed phase-change liquid-cooled server heat dissipation case provided by the invention comprises a sealed case body and a sealed cover plate for sealing the sealed case body, wherein the sealed case body is provided with a liquid phase region and a gas phase region, heat-conducting engineering liquid is contained in the liquid phase region, a mainboard of a server unit is immersed in the engineering liquid, a connecting plate of the server unit is exposed in the gas phase region, and an indicator light for displaying the current operation state of the server unit is arranged on the connecting plate. And the gas phase area is provided with a transparent window for checking the state of the indicator light.

Optionally, an infrared camera is arranged in the gas phase region.

Optionally, a smoke sensor is arranged in the gas phase area.

Optionally, a gas pressure sensor is arranged in the gas phase region, and an electronic pressure release valve is arranged on the outer wall of the gas phase region.

Optionally, a liquid level sensor is arranged in the liquid phase region, and an electronic valve is electrically connected with the liquid level sensor and arranged on the engineering liquid transmission pipeline.

Optionally, a liquid level pipe is arranged on the outer wall of the liquid phase region, and two ends of the liquid level pipe are respectively communicated with the liquid phase region.

Optionally, a KVM switch, a switch, and a PLC power control unit are disposed in the liquid phase region, the server unit is connected to the PLC power control unit and the switch and to the KVM switch through a waterproof cable, a waterproof joint connected to the KVM switch, the switch, and the PLC power control unit is disposed on a bottom side wall of the liquid phase region, where the gas phase region protrudes from the liquid phase region, one end of the waterproof joint is located in the gas phase region of the sealed box, and one end of the waterproof joint is located outside the sealed box.

Optionally, a liquid cooling plate is arranged on the sealing cover plate.

Optionally, the liquid cooling plate includes a heat conducting plate nested on the sealing cover plate, a body of the heat conducting plate is located outside the cover plate, a heat dissipation copper pipe is arranged on the body, and a heat dissipation fin is arranged on one surface of the body facing the inner side of the heat dissipation case.

Optionally, the peripheral wall of the inner side edge of the sealing cover plate is provided with a sealing ring made of terpolymer propylene rubber.

The sealed box body is divided into the liquid phase area and the gas phase area, the transparent window is arranged in the gas phase area, the mainboard of the server unit is placed in the liquid phase area, and the connecting plate of the server unit is exposed in the gas phase area. Therefore, the operation state of each server unit can be directly checked through the transparent window without frequently opening the sealing cover plate for checking.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a heat dissipation chassis of an immersion type phase-change liquid-cooled server according to the present invention;

FIG. 2 is a schematic structural view of a seal box;

FIG. 3 is a schematic view of the installation of the server unit in the inner box;

FIG. 4 is an exploded view of the sealing cover plate;

fig. 5 is a schematic view of the interior of the seal box.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to the accompanying drawings of fig. 1-5, in an embodiment of the present invention, an immersion type phase change liquid cooling server heat dissipation chassis is provided, which includes a sealed box 1 and a sealed cover plate 2 for sealing the sealed box 1.

The periphery of the sealed box body 1 is provided with a box body bracket 3 so as to improve the overall structural strength of the sealed box body 1. The sealed tank 1 has a gas phase region 11 and a liquid phase region 12. The liquid phase area 12 is accommodated in the box body support 3, engineering liquid for heat conduction is arranged in the liquid phase area 12, and a mainboard of the server unit 9 is immersed in the engineering liquid. In this embodiment, the engineering liquid is a fluorinated liquid. When the heating element on the mainboard generates heat, the fluorinated liquid can absorb the heat generated by the heating element, automatically evaporates when reaching the liquid saturation temperature (40-60 ℃), carries the heat out to the gas phase area 11 through the latent heat of vaporization of the liquid, is gradually cooled and liquefied in the gas phase area 11, and is recycled to the liquid phase area 12.

The connecting plate of the server unit 9 is exposed in the gas phase area 11, and an indicator light for displaying the current operation state of the server unit 9 is arranged on the connecting plate. Two transparent windows 11a are arranged on the side wall of the gas phase area 11 before opening, and maintenance personnel can directly check the state of the indicator lamp of the server unit 9 through the transparent windows 11a so as to obtain the current running state information of the server.

The invention divides the sealed box body 1 into a liquid phase area 12 and a gas phase area 11, and sets a transparent window 11a in the gas phase area 11, places the mainboard of the server unit 9 in the liquid phase area 12, and exposes the connecting board of the server unit 9 in the gas phase area 11. Thus, the operating state of each server unit 9 can be directly checked through the transparent window 11a without frequently opening the sealing cover 2 for checking.

The indicator light on the server unit 9 can only be used for displaying whether the running state of the server unit 9 is normal or not, and cannot reflect whether the internal temperature of the sealed box body 1, the liquid level height of the engineering liquid and the air pressure are in normal ranges or not, and maintenance personnel cannot guard on the side of the heat dissipation case all the time. Therefore, the intelligent maintenance of the heat dissipation case is realized. In this embodiment, be equipped with infrared camera 41 in the inside of sealed box 1, this infrared camera 41 passes through the network and is connected with the monitoring platform in backstage, and maintainer can acquire the inside condition of sealed box 1 through infrared camera 41 to look over the behavior of each inside unit of sealed box 1 at any time, so that in time carry out maintenance work to the server unit 9 that goes wrong.

As further, still be equipped with temperature sensor 42 in sealed box 1, this temperature sensor 42 also is connected with the monitoring platform in backstage through the network to the maintainer can acquire the temperature in sealed box 1 at any time, avoids appearing the temperature that the inside high temperature of sealed box 1 leads to the dry combustion method.

Further, a smoke sensor 43 is provided in the sealed case 1. When the internal process liquid is dried, the heat generated by the heating elements of the server unit 9 causes the temperature in the sealed housing 1 to rise rapidly and cause combustion, producing particulate smoke. The particle smoke generated by combustion can be detected by the smoke sensor 43 and fed back to the monitoring platform, so that maintenance personnel can be informed of the maintenance work in time. Meanwhile, the smoke sensor 43 and the temperature sensor 42 can play a role in double insurance, and when any one of the smoke sensor and the temperature sensor is damaged, the safety of the heat dissipation case can be further improved through the other feedback condition.

Still further, an air pressure sensor 44 is provided in the sealed case 1 to detect the internal pressure of the sealed case 1. When the engineering liquid absorbs heat and evaporates, an evaporation pressure is formed in the sealed box body 1. Along with the increase of the adsorption and evaporation capacity of the engineering liquid, the evaporation pressure is increased, so that the leakage of the engineering liquid stored in the sealed box body 1 is more easily caused, and the potential safety hazard is caused. Therefore, in order to maintain the stable air pressure inside the sealed casing 1, the air pressure sensor 44 is provided in the sealed casing 1, and an electronic relief valve, not shown, is provided in the side wall of the sealed casing 1. When the air pressure sensor 44 detects that the air pressure inside the sealed box body 1 exceeds a set threshold value, a control signal is sent to the electronic pressure release valve to open the electronic pressure release valve for pressure release, and meanwhile, when the air pressure sensor 44 detects that the air pressure is restored to a normal range, a new control signal is sent to the electronic pressure release valve to close the electronic pressure release valve.

Preferably, in the present embodiment, the liquid level sensor 45 is provided in the sealed casing 1, and a transfer line, not shown, for transferring the process liquid is provided outside the sealed casing 1. An electronic valve (not shown) connected to the liquid level sensor 45 is provided in the transfer line. The liquid level sensor 45 can detect the liquid level height of the engineering liquid in the sealed box body 1 in real time, and when the liquid level sensor detects that the height of the engineering liquid is lower than a set value, a control signal can be sent to the electronic valve to open the electronic valve to supplement the engineering liquid, so that the engineering liquid can be always kept at a certain liquid level height, a heating element of the server unit 9 is effectively immersed, and the heating element is prevented from being exposed out of the engineering liquid and being burnt.

In conclusion, the temperature sensor 42, the smoke sensor 43, the air pressure sensor 44 and the liquid level sensor 45 are arranged in the sealed box body 1, so that convenience can be brought to intelligent maintenance of the heat dissipation case, and the maintenance difficulty of maintenance personnel on the heat dissipation case is reduced.

Preferably, in the present embodiment, a KVM switch 51, a switch 52, and a PLC power control unit 53 are provided in the liquid phase region 12, and the server unit 9 is connected to the PLC power control unit 53 and the switch 52 and the KVM switch 51 through a waterproof cable. The sidewall of the bottom of the gas phase region 11 protruding from the liquid phase region 12 is provided with a waterproof connector 6 connected to the KVM switch 51, the switch 52 and the PLC power control unit 53, one end of the waterproof connector 6 is located in the gas phase region 11 of the sealed box 1, and one end of the waterproof connector 6 is located outside the sealed box 1.

Therefore, during field maintenance, a maintainer can connect the notebook computer and the KVM switcher 51 with the server units 9 in the sealed box through the connecting wires, access the interfaces of the server units 9, control and debug the software in the server units 9, and do not need to open the sealed box 1 to control and debug the server units 9 one by one, so that the control and debugging steps of the server units 9 are simplified, and the convenience of maintenance of the server units 9 is improved.

In this embodiment, a distribution box 54 is provided outside the liquid phase region 12 of the sealed box body 1, and the distribution box 54 is connected to the PLC power supply control unit 53 through the waterproof connector 6 to supply power to each server unit 9.

Optionally, in this embodiment, a vertically arranged liquid level pipe 7 is disposed on the outer wall of the liquid phase region 12 of the sealed box body 1, and two ends of the liquid level pipe 7 are respectively communicated with the liquid phase region 12. Through setting up liquid level pipe 7 to the liquid level height that can more direct observation sealed box 1 at the scene conveniently, and maintainer still through the liquid level height contrast according to the liquid level height of the liquid level height in liquid level pipe 7 and liquid level sensor 45's the detection to investigate liquid level sensor 45 that detects unusually.

Alternatively, in the present embodiment, the sealing cover plate 2 is disposed at the opening of the gas phase zone 11 of the sealing box body 1, and the liquid cooling plate 8 is disposed thereon. The vaporized process liquid contacts the liquid-cooled plate 8 as it rises to the vapor phase zone 11 and condenses to the liquid phase on the liquid-cooled plate 8.

Specifically, in this embodiment, the liquid cooling plate 8 includes a heat conducting plate 81 nested on the sealing cover plate 2, a body of the heat conducting plate 81 is located outside the sealing cover plate 2, a heat dissipating copper pipe 82 is disposed on the body, and a heat dissipating fin 81a is disposed on a surface of the body facing the inside of the sealing box 1. The contact area between the vaporized engineering liquid and the liquid cooling plate 8 can be effectively increased by arranging the heat radiating fins 81a, and the condensation speed of the vaporized engineering liquid is accelerated. Through setting up heat dissipation copper pipe 82 in the heat-conducting plate 81 lies in the outside one side of seal box, can avoid heat dissipation copper pipe 82 and engineering liquid direct contact and corrode, reveal the coolant in heat dissipation copper pipe 82.

Preferably, in the present embodiment, the periphery of the heat conducting plate 81 is fastened to the sealing cover plate 2 by the first screws 811, and an epoxy glue for sealing is disposed in a connection gap between the periphery of the heat conducting plate 81 and the sealing cover plate 2, so as to improve the tightness of connection and matching between the heat conducting plate 81 and the sealing cover plate 2 and prevent the vaporized engineering liquid from leaking.

Preferably, in this embodiment, the heat conducting plate 81 has a heat dissipating plate 83 on the body thereof, and the heat dissipating copper pipe 82 is interposed between the heat conducting plate 81 and the heat dissipating plate 83. Through setting up heating panel 83, can accelerate the radiating efficiency of heat dissipation copper pipe 82 with the help of heating panel 83 on the one hand, on the other hand can play protection heat dissipation copper pipe 82, avoids heat dissipation copper pipe 82 to be corroded by external steam oxidation.

Further, in the present embodiment, the heat dissipation plate 83 is fastened to the heat conduction plate 81 by a plurality of second screws 831 regularly distributed, so that the heat dissipation plate 83 is tightly attached to the heat conduction plate 81, and the probability of oxidation corrosion of the heat dissipation copper pipe 82 is further reduced. In addition, the heat dissipation plate 83 can be in close contact with the heat dissipation copper pipe 82, and the heat conduction efficiency between the heat dissipation plate and the heat dissipation copper pipe is improved.

Still further, the heat conducting plate 81 and the heat dissipating plate 83 are both provided with an accommodating groove 83a, and the heat dissipating copper tube 82 is accommodated in the accommodating groove 83a between the heat conducting plate 81 and the heat dissipating plate 83, so as to increase the contact area between the heat dissipating copper tube 82 and the heat conducting plate 81, and the heat dissipating plate 83, and to improve the heat conducting efficiency between the heat dissipating copper tube 82 and the heat conducting plate 81, and the heat dissipating plate 83.

Still further, heat conductive silicone grease is coated in the accommodating groove 93a to fill a contact gap between the heat dissipation copper pipe 82 and the heat dissipation plate 83, the heat conduction plate 81 and the heat dissipation plate 83, and further improve the heat conduction effect therebetween.

In this embodiment, a protective cover 22 is provided on the outer side of the sealing cover 2, and the protective cover 22 can completely cover the heat sink 83 and contact the heat sink 83. Thus, on one hand, the whole appearance of the sealing cover plate 2 can be kept, and on the other hand, a certain heat conduction and radiation effect can be achieved.

In this embodiment, the inner edge of the sealing cover plate 2 is provided with a sealing ring 21 made of terpolymer propylene rubber to realize effective sealing of the sealing box 1 and avoid leakage of vaporized engineering liquid. By adopting the seal ring 21 made of the ternary propylene rubber, the softening effect of the fluorinated liquid on the seal ring can be reduced, and the sealing effect of the seal ring 21 is ensured.

In the present embodiment, the rear side of the sealing cover 2 is pivotally connected to the side wall of the gas phase section 11 by a hinge. The front side of the sealing cover plate 2 is provided with a plurality of buckling pieces 23, and the side wall of the front side of the gas phase area 11 is provided with locking buckles 111 which are matched with the buckling pieces 23 one by one. When the sealing cover plate 2 covers the opening of the gas phase area 11, the sealing cover plate 2 is locked on the gas phase area 11 only through the matching of the lock catch 111 and the buckle piece 23, so as to maintain the sealing performance of the whole sealing box body 1.

In addition, in the embodiment, gas springs 24 are respectively provided on the inner walls of the left and right sides of the gas phase section 11, and one end of each gas spring 24 is rotatably connected to the inner wall of the gas phase section 11 and the other end thereof is rotatably connected to the inner wall of the sealing cover plate 2. Through setting up air spring 24 to support sealed apron 2 when opening sealed apron 2, in order to keep sealed apron 2 to be in the open mode, make things convenient for maintainer to overhaul the inside server unit 9 of sealed box 1.

Optionally, in this embodiment, a door 31 is disposed around the casing support 3 to isolate the sealed casing 1 from external impact. Meanwhile, the distribution box 54 and the liquid level tube 7 can be hidden in the interval between the sealed box body 1 and the box door 31, so that the whole radiating case is more concise and attractive.

In this embodiment, the bottom surface of the box support 3 is provided with four rollers 32, so as to facilitate the movement of the heat dissipation case, improve the movement convenience of the heat dissipation case, and facilitate the arrangement of the heat dissipation case on the case.

The above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any minor modifications, equivalents and improvements made to the above embodiment according to the technical spirit of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. An immersed phase-change liquid cooling server heat dissipation case comprises a sealed case body and a sealed cover plate used for sealing the sealed case body, and is characterized in that the sealed case body is provided with a liquid phase region and a gas phase region, heat-conducting engineering liquid is contained in the liquid phase region, a mainboard of a server unit is immersed in the engineering liquid, a connecting plate of the server unit is exposed in the gas phase region, and an indicator light used for displaying the current running state of the server unit is arranged on the connecting plate; and the gas phase area is provided with a transparent window for checking the state of the indicator light.

2. The immersed phase change liquid cooling server heat sink chassis of claim 1, wherein an infrared camera is disposed within the vapor zone.

3. The immersed phase-change liquid-cooled server heat dissipation cabinet according to claim 2, wherein a smoke sensor is disposed in the gas phase region.

4. The immersed phase change liquid cooling server heat sink chassis of claim 3, wherein an air pressure sensor is disposed in the air phase region, and an electronic pressure relief valve is disposed on an outer wall of the air phase region.

5. The immersed phase change liquid cooling server heat dissipation cabinet of claim 1, wherein a liquid level sensor is disposed in the liquid phase region, and an electronic valve is electrically connected to the liquid level sensor and disposed on the engineering liquid transmission pipeline.

6. The immersed phase-change liquid cooling server heat dissipation case of claim 1, wherein a liquid level pipe is disposed on an outer wall of the liquid phase region, and two ends of the liquid level pipe are respectively communicated with the liquid phase region.

7. The immersed phase change liquid cooling server heat dissipation cabinet of claim 1, wherein a KVM switch, a switch and a PLC power control unit are disposed in the liquid phase region, the server unit is connected to the PLC power control unit and the switch and the KVM switch via a waterproof cable, a waterproof joint connected to the KVM switch, the switch and the PLC power control unit is disposed on a bottom side wall of the liquid phase region protruding from the liquid phase region, one end of the waterproof joint is located in the gas phase region of the sealed cabinet, and one end of the waterproof joint is located outside the sealed cabinet.

8. The immersed phase change liquid cooling server heat sink chassis of claim 1, wherein the sealing cover plate is provided with a liquid cooling plate.

9. The immersed phase-change liquid-cooling server heat-dissipation case as claimed in claim 8, wherein the liquid-cooling plate comprises a heat-conducting plate nested on the sealing cover plate, a body of the heat-conducting plate is located on the outer side of the cover plate, a heat-dissipation copper pipe is arranged on the body, and heat-dissipation fins are arranged on one side of the body facing the inner side of the heat-dissipation case.

10. The immersed phase change liquid cooling server heat dissipation cabinet of claim 1, wherein the peripheral wall of the inner side edge of the sealing cover plate is provided with a sealing ring made of terpolymer propylene rubber.