CN105431020A - Liquid cooling system for server - Google Patents
Liquid cooling system for server Download PDFInfo
- Publication number
- CN105431020A CN105431020A CN201511017519.1A CN201511017519A CN105431020A CN 105431020 A CN105431020 A CN 105431020A CN 201511017519 A CN201511017519 A CN 201511017519A CN 105431020 A CN105431020 A CN 105431020A
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- China
- Prior art keywords
- operated valve
- electromagnetically operated
- liquid
- cooling system
- server
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention relates to a liquid cooling system for a server. As a liquid filling and liquid recovering device is detachably connected with a refrigeration device, a refrigerant is pumped in the refrigeration device or the refrigerant is exhausted from the refrigeration device. The operation is convenient, liquid filling and draining on a liquid storage tank and a blade can be realized, and liquid filling and draining can be realized for a certain blade in a condition of realizing no to influence normal refrigeration of other blade servers.
Description
Technical field
The present invention relates to computer cooling technology field, particularly relate to a kind of liquid cooling system for server.
Background technology
The computer used at present mostly relies on cold air to lower the temperature to machine, but the heart in the data, be only not enough to by air-cooled the cooling requirements meeting high heat flux server.Water-cooled or liquid cooling have two large benefits: one is it directly to lead cooling agent thermal source instead of indirect refrigeration as air-cooled; Two is compare with air-cooled, and the heat that per unit volume transmits and radiating efficiency are up to 3500 times.Water-filled radiator just appeared at market at about 08 year, and the company of the server such as Hewlett-Packard, IBM giant and some other refocus data Center Technology all successively released water-cooling product.No matter in direct liquid cooling system, or indirectly in liquid cooling system, the use of fluid reservoir is essential.
At present, the cold-producing medium that liquid cooling server on the market adopts is mostly water.As everyone knows, there is the water of impurity to be a kind of good conductor, circuit board short circuit can be caused.Although current water-filled radiator producer ensures the complete Full-sealed no-leakage of its product, this is a kind of hidden danger all the time, and most of server producer is hung back to this technology.In liquid cooling system, if use insulation cold-producing medium to cool server, no matter be immersion direct liquid cooling system, or in indirect liquid cooling system, topping up must be carried out to refrigerating system before the use, after a procedure or maintenance time by emptying for the cold-producing medium in refrigerating system.
And topping up and emptying in practical operation, flow process is very complicated loaded down with trivial details, is not easily full of or emptying, and can not when not affecting other blade servers separately for certain blade server carries out topping up and emptying.
Summary of the invention
Liquid cooling system for server of the present invention, solves in practical operation, and flow process is very complicated loaded down with trivial details, is not easily full of or emptying, and can not when not affecting other blade servers separately for certain blade server carries out topping up and emptying problem.
The invention provides a kind of liquid cooling system for server, comprising:
Refrigerating plant;
Topping up receives liquid device, and topping up is received liquid device and is removably connected with refrigerating plant, with to suction cold-producing medium in refrigerating plant or from refrigerating plant discharging refrigerant.
According to the liquid cooling system for server of the present invention, refrigerating plant comprises fluid reservoir, blade server, condenser and the first pump, first pump is arranged between the liquid outlet of fluid reservoir and blade server, and condenser is arranged between the liquid return hole of fluid reservoir and blade server.
According to the liquid cooling system for server of the present invention, between blade server and condenser, be provided with the first electromagnetically operated valve, between the first pump and blade server, be provided with the second electromagnetically operated valve.
According to the liquid cooling system for server of the present invention, between the second electromagnetically operated valve and blade server, be provided with gas-liquid detector.
According to the liquid cooling system for server of the present invention, topping up is received liquid device and is comprised refrigerant tank, the 3rd electromagnetically operated valve, the 4th electromagnetically operated valve and the second pump, refrigerant tank is connected with the 3rd electromagnetically operated valve and the 4th electromagnetically operated valve via the second pump, be connected to blade server after 3rd electromagnetically operated valve is in parallel with the second electromagnetically operated valve, and the 4th electromagnetically operated valve is connected to fluid reservoir.
According to the liquid cooling system for server of the present invention, topping up is received liquid device and is removably connected by snap joint with between refrigerating plant.
According to the liquid cooling system for server of the present invention, topping up receives the first and second refrigerant lines that liquid device also comprises the parallel connection be arranged between refrigerant tank and the 3rd electromagnetically operated valve and the 4th electromagnetically operated valve,
Wherein, the first refrigerant line has the 5th electromagnetically operated valve and the 6th electromagnetically operated valve, and second refrigerant pipeline has the 7th electromagnetically operated valve and the 8th electromagnetically operated valve,
Wherein, the pipeline section between the 5th electromagnetically operated valve and the 6th electromagnetically operated valve is connected via the second pump with the pipeline section between the 7th electromagnetically operated valve and the 8th electromagnetically operated valve.
According to the liquid cooling system for server of the present invention, the top of fluid reservoir is provided with blast pipe and the 9th electromagnetically operated valve.
According to the liquid cooling system for server of the present invention, the probe of gas-liquid detector is arranged on the bottom of blade server.
The beneficial effect of the liquid cooling system for server of the present invention is:
Liquid cooling system for server of the present invention, receives liquid device by topping up and is removably connected with refrigerating plant, with to suction cold-producing medium in refrigerating plant or from refrigerating plant discharging refrigerant.This programme is easy to operate, realizes the topping up of fluid reservoir and blade and emptying, and can realization do not affect other blade servers normally in refrigeration situation for certain blade realizes topping up and emptying.
Accompanying drawing explanation
Fig. 1 is the structural representation of the liquid cooling system for server of the present invention.
Embodiment
Fig. 1 is the structural representation of the embodiment of the liquid cooling system for server of the present invention.As shown in Figure 1, the liquid cooling system for server of the present embodiment can comprise: refrigerating plant A and topping up receive liquid device B, wherein, topping up is received liquid device B and is removably connected with refrigerating plant A, with to suction cold-producing medium in refrigerating plant A or from refrigerating plant A discharging refrigerant.
Particularly, the first half is refrigerating plant A structural representation, and the server heat that operationally CPU and each electronic devices and components produce makes cold-producing medium seethe with excitement, and becomes refrigerant vapour.The refrigerant vapour that each server produces and hot fluid flow out via above server, and body pools together, and again becomes cold fluid through condensation, and cold fluid flows into server again and absorbs heat, thus completes whole kind of refrigeration cycle.
Particularly, the latter half is that topping up receives liquid device B structural representation, topping up is received in liquid device B and is provided with some electromagnetically operated valves, and these electromagnetically operated valves arrange the suction and discharge that control liquid by parallel connection and serial connection, and topping up receipts liquid device B is connected by snap joint with refrigerating plant A.
The liquid cooling system for server of the present embodiment, receives liquid device by topping up and is removably connected with refrigerating plant, with to suction cold-producing medium in refrigerating plant or from refrigerating plant discharging refrigerant.This programme is easy to operate, realizes the topping up of fluid reservoir 10 and blade and emptying, and can not affect in the normal refrigeration situation of other blade servers 13 for certain blade realizes topping up and emptying in realization.
The liquid cooling system for server of the present invention shown in Fig. 1 be embodiment basis on, the present invention can also specifically comprise following content.
Particularly, refrigerating plant A comprises fluid reservoir 10, blade server 13, condenser 14 and the first pump 19, first pump 19 is arranged between the liquid outlet of fluid reservoir 10 and blade server 13, and condenser 14 is arranged between the liquid return hole of fluid reservoir 10 and blade server 13.Wherein, blade server 13 refers in the rack cabinet of calibrated altitude can the server unit of the multiple cassette of plug-in mounting, is that one realizes high availability and highdensity low cost server platform.
Particularly, between blade server 13 and condenser 14, be provided with the first electromagnetically operated valve, between the first pump 19 and blade server 13, be provided with the second electromagnetically operated valve 2.First electromagnetically operated valve 1 and the second electromagnetically operated valve 2 are for controlling the flowing of the liquid in refrigerating plant A.
Particularly, gas-liquid detector 12 is provided with between the second electromagnetically operated valve 2 and blade server 13.
Particularly, topping up is received liquid device and is comprised refrigerant tank 15, the 3rd electromagnetically operated valve 3, the 4th electromagnetically operated valve 4 and the second pump 16, refrigerant tank 15 is connected with the 3rd electromagnetically operated valve 3 and the 4th electromagnetically operated valve 4 via the second pump 16, be connected to blade server 13 after 3rd electromagnetically operated valve 3 is in parallel with the second electromagnetically operated valve 2, and the 4th electromagnetically operated valve 4 is connected to fluid reservoir 10.The circulation of liquid between liquid received by 3rd electromagnetically operated valve 3 and the 4th electromagnetically operated valve 4 for controlling refrigerating plant A and topping up.
Particularly, topping up receipts liquid device B is removably connected by snap joint with between refrigerating plant A.
Particularly, topping up receives the first and second refrigerant lines that liquid device B also comprises the parallel connection be arranged between refrigerant tank 15 and the 3rd electromagnetically operated valve 3 and the 4th electromagnetically operated valve 4;
Wherein, the first refrigerant line has the 5th electromagnetically operated valve 5 and the 6th electromagnetically operated valve 6, and second refrigerant pipeline has the 7th electromagnetically operated valve 7 and the 8th electromagnetically operated valve 8; Pipeline section between 5th electromagnetically operated valve 5 and the 6th electromagnetically operated valve 6 is connected via the second pump with the pipeline section between the 7th electromagnetically operated valve 7 and the 8th electromagnetically operated valve 8.Control topping up by the open and close of electromagnetically operated valve and receive the different flow path of liquid device B, and control liquid device B received by the second pump 16 effect at topping up, and then control drawing liquid and filling process that topping up receives liquid device B.
Particularly, the top of fluid reservoir is provided with blast pipe 11 and the 9th electromagnetically operated valve 9.In filling process, when detecting that the pressure in fluid reservoir 10 is greater than set point, the 9th electromagnetically operated valve 9 just can be opened, by blast pipe 11 vent the air overboard and other incondensable gases.
Particularly, the probe of gas-liquid detector 12 is arranged on the bottom of blade server 13.Thus check the ratio of refrigerant liquid and refrigerant vapour in effluent air from blade server 13.
Particularly, snap joint comprises the first snap joint 17 and the second snap joint 18, one end of first snap joint 17 and the second snap joint 18 is connected between gas-liquid detector 12 and the second electromagnetically operated valve and fluid reservoir 10 lower bottom part respectively, and the other end is connected with the 3rd electromagnetically operated valve 3 be connected in parallel and the 4th electromagnetically operated valve 4 respectively.
In the specific embodiment of the liquid cooling system for server of the present invention, the first half is normal liquid cooling circulation, now the first electromagnetically operated valve 1 and the second electromagnetically operated valve 2 are opened, 3rd electromagnetically operated valve 3 and the 4th electromagnetically operated valve 4 are closed, if now needed, even can pull out two first snap joints 17 and the second snap joints 18, the latter half is separated with the first half.
The using method of the topping up receipts liquid device B of below is when this system needs topping up, open the 5th electromagnetically operated valve 5 and the 8th electromagnetically operated valve 8, close the 6th electromagnetically operated valve 6 and the 7th electromagnetically operated valve 7, from refrigerant tank 15, extract cold-producing medium, after pressurization in feeding refrigerating system.And when needs overhaul or be emptying, open the 6th electromagnetically operated valve 6 and the 7th electromagnetically operated valve 7, close the 5th electromagnetically operated valve 5 and the 8th electromagnetically operated valve 8, from refrigerating plant A, extract cold-producing medium, and send in refrigerant tank 15.
This topping up and emptying liquid cooling system being operating as when topping up: the first electromagnetically operated valve 1 and the second electromagnetically operated valve 2 are closed, stop kind of refrigeration cycle.Open the 4th electromagnetically operated valve 4 and the 7th electromagnetically operated valve 7, close the 5th electromagnetically operated valve 5 and the 6th electromagnetically operated valve 6.And plug two snap joints, open the second electromagnetically operated valve 2 and the 3rd electromagnetically operated valve 3, thus extract cold-producing medium in refrigerant tank 15, sending in refrigerating plant A after pressurization, is fluid reservoir 10 and blade server 13 topping up, for the blade server 13 in refrigerating plant A.Have blast pipe 11 and the 9th electromagnetically operated valve 9 above fluid reservoir 10, in filling process, when detecting that the pressure in fluid reservoir 10 is greater than set point, the 9th electromagnetically operated valve 9 just can be opened, by blast pipe 11 vent the air overboard and other incondensable gases.When the cold-producing medium in fluid reservoir 10 is full of, after namely reaching setting liquid level, transmission of signal, to the 9th electromagnetically operated valve 9, controls the 4th electromagnetically operated valve 4 and closes, complete automatic liquid feeding process.
In addition, if think to be separately fluid reservoir 10 or server topping up, selection control can be carried out by the opening and closing of the second electromagnetically operated valve 2 and the 3rd electromagnetically operated valve 3.
Being operating as when topping up and emptying liquid cooling system need maintenance or be emptying: the first electromagnetically operated valve 1 and the second electromagnetically operated valve 2 are closed, stops kind of refrigeration cycle.Plug two snap joints, open the 5th electromagnetically operated valve 5 and the 6th electromagnetically operated valve 6, close the 4th electromagnetically operated valve 4 and the 7th electromagnetically operated valve 7.And open the second electromagnetically operated valve 2 and the 3rd electromagnetically operated valve 3, thus the cold-producing medium in blade server 13 and fluid reservoir 10 can be extracted out, get back in the middle of refrigerant tank 15.Loop connects gas-liquid detector 12 to blade server 13, the probe of this gas-liquid detector 12 is arranged on the bottom of blade server 13, thus detect in the fluid flowed out from blade server 13, the ratio of refrigerant liquid and refrigerant vapour, when the ratio of refrigerant vapour is greater than set point, just can think emptying in blade server 13, thus transmission of signal to the second electromagnetically operated valve 2, Controlling solenoid valve is closed, and completes evacuation procedure.
Equally, if think independent emptying fluid reservoir 10 or blade server 13, selection control can be carried out by the opening and closing of the second electromagnetically operated valve 2 and the 3rd electromagnetically operated valve 3.
In addition, a lot of sheet blade server 13 is had in refrigerating plant A, when certain blade server 13 breaks down, blade server 13 for this reason can be controlled separately by this kind of method and carry out separately topping up and emptying, not affect normal work and the refrigeration of other blade servers 13 simultaneously.Such as, close the first electromagnetically operated valve 1 of certain blade server 13 correspondence, stop the kind of refrigeration cycle of this blade server 13, its feed tube and drain pipe are received after liquid device B is connected by the first snap joint 17 and the second snap joint 18 and the topping up of below, just can realize topping up and emptying for this blade server 13.And while operation, the normal work of other blade servers 13 can not also be affected.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. for a liquid cooling system for server, it is characterized in that, comprising:
Refrigerating plant;
Topping up receives liquid device, and described topping up is received liquid device and is removably connected with described refrigerating plant, with to suction cold-producing medium in described refrigerating plant or from described refrigerating plant discharging refrigerant.
2. liquid cooling system according to claim 1, it is characterized in that, described refrigerating plant comprises fluid reservoir, blade server, condenser and the first pump, described first pump is arranged between the liquid outlet of described fluid reservoir and described blade server, and described condenser is arranged between the liquid return hole of described fluid reservoir and described blade server.
3. liquid cooling system according to claim 2, is characterized in that, is provided with the first electromagnetically operated valve between described blade server and described condenser, is provided with the second electromagnetically operated valve between described first pump and described blade server.
4. liquid cooling system according to claim 3, is characterized in that, is provided with gas-liquid detector between described second electromagnetically operated valve and described blade server.
5. liquid cooling system according to claim 3, it is characterized in that, described topping up is received liquid device and is comprised refrigerant tank, the 3rd electromagnetically operated valve, the 4th electromagnetically operated valve and the second pump, described refrigerant tank is connected with described 3rd electromagnetically operated valve and described 4th electromagnetically operated valve via described second pump, be connected to described blade server after described 3rd electromagnetically operated valve is in parallel with described second electromagnetically operated valve, and described 4th electromagnetically operated valve is connected to described fluid reservoir.
6. liquid cooling system according to claim 1, is characterized in that, described topping up is received liquid device and is removably connected by snap joint with between described refrigerating plant.
7. liquid cooling system according to claim 5, is characterized in that, described topping up receives the first and second refrigerant lines that liquid device also comprises the parallel connection be arranged between described refrigerant tank and described 3rd electromagnetically operated valve and described 4th electromagnetically operated valve,
Wherein, described first refrigerant line has the 5th electromagnetically operated valve and the 6th electromagnetically operated valve, and described second refrigerant pipeline has the 7th electromagnetically operated valve and the 8th electromagnetically operated valve,
Wherein, the pipeline section between described 5th electromagnetically operated valve and described 6th electromagnetically operated valve is connected via described second pump with the pipeline section between described 7th electromagnetically operated valve and described 8th electromagnetically operated valve.
8. liquid cooling system according to claim 1, is characterized in that, the top of described fluid reservoir is provided with blast pipe and the 9th electromagnetically operated valve.
9. liquid cooling system according to claim 4, is characterized in that, the probe of described gas-liquid detector is arranged on the bottom of described blade server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017519.1A CN105431020B (en) | 2015-12-29 | 2015-12-29 | Liquid cooling system for server |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511017519.1A CN105431020B (en) | 2015-12-29 | 2015-12-29 | Liquid cooling system for server |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105431020A true CN105431020A (en) | 2016-03-23 |
| CN105431020B CN105431020B (en) | 2018-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511017519.1A Active CN105431020B (en) | 2015-12-29 | 2015-12-29 | Liquid cooling system for server |
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| CN (1) | CN105431020B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106774748A (en) * | 2016-12-28 | 2017-05-31 | 曙光节能技术（北京）股份有限公司 | Server girff |
| CN106852071A (en) * | 2016-12-28 | 2017-06-13 | 曙光节能技术（北京）股份有限公司 | For the liquid cooling apparatus of blade server |
| CN106873738A (en) * | 2016-12-23 | 2017-06-20 | 曙光节能技术（北京）股份有限公司 | For the liquid cooling system and liquid cooling method of server |
| CN113242679A (en) * | 2021-05-28 | 2021-08-10 | 西安交通大学 | Heat radiator |
| US11109516B2 (en) | 2017-11-24 | 2021-08-31 | Beijing Baidu Netcom Science and Technology Co., Ltd | Liquid-cooled server chassis |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486355A (en) * | 2010-12-01 | 2012-06-06 | 富士通株式会社 | Cooling apparatus and electronic apparatus |
| CN202868304U (en) * | 2012-10-10 | 2013-04-10 | 合肥天鹅制冷科技有限公司 | Low temperature constant pressure liquid supplying device |
| EP2706833A2 (en) * | 2012-09-07 | 2014-03-12 | Fujitsu Limited | Electronic apparatus and cooling module mounted in that electronic apparatus |
-
2015
- 2015-12-29 CN CN201511017519.1A patent/CN105431020B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486355A (en) * | 2010-12-01 | 2012-06-06 | 富士通株式会社 | Cooling apparatus and electronic apparatus |
| EP2706833A2 (en) * | 2012-09-07 | 2014-03-12 | Fujitsu Limited | Electronic apparatus and cooling module mounted in that electronic apparatus |
| CN202868304U (en) * | 2012-10-10 | 2013-04-10 | 合肥天鹅制冷科技有限公司 | Low temperature constant pressure liquid supplying device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106873738A (en) * | 2016-12-23 | 2017-06-20 | 曙光节能技术（北京）股份有限公司 | For the liquid cooling system and liquid cooling method of server |
| CN106774748A (en) * | 2016-12-28 | 2017-05-31 | 曙光节能技术（北京）股份有限公司 | Server girff |
| CN106852071A (en) * | 2016-12-28 | 2017-06-13 | 曙光节能技术（北京）股份有限公司 | For the liquid cooling apparatus of blade server |
| US11109516B2 (en) | 2017-11-24 | 2021-08-31 | Beijing Baidu Netcom Science and Technology Co., Ltd | Liquid-cooled server chassis |
| CN113242679A (en) * | 2021-05-28 | 2021-08-10 | 西安交通大学 | Heat radiator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105431020B (en) | 2018-10-30 |
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Effective date of registration: 20220727 Address after: 100089 building 36, courtyard 8, Dongbeiwang West Road, Haidian District, Beijing Patentee after: Dawning Information Industry (Beijing) Co.,Ltd. Patentee after: DAWNING INFORMATION INDUSTRY Co.,Ltd. Address before: 100193 No. 36 Building, No. 8 Hospital, Wangxi Road, Haidian District, Beijing Patentee before: Dawning Information Industry (Beijing) Co.,Ltd. |
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