CN203882259U - Immersed host oil cooling circulation and heat dissipation system - Google Patents

Immersed host oil cooling circulation and heat dissipation system Download PDF

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Publication number
CN203882259U
CN203882259U CN201420220593.8U CN201420220593U CN203882259U CN 203882259 U CN203882259 U CN 203882259U CN 201420220593 U CN201420220593 U CN 201420220593U CN 203882259 U CN203882259 U CN 203882259U
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CN
China
Prior art keywords
mainboard
heat
cooling
oil
flat
Prior art date
Application number
CN201420220593.8U
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Chinese (zh)
Inventor
张玉波
王资博
闫鑫
张超炜
华天琪
李斌
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华北电力大学(保定)
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Priority to CN201420220593.8U priority Critical patent/CN203882259U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

The utility model relates to an immersed case oil cooling circulation and heat dissipation system which comprises a case, a power source installed in the case, a hard disc, a mainboard and a heat dissipation assembly installed on the mainboard. Transformer oil occupying 1/2-2/3 of the size of the case is infused into the case so that the power source, the mainboard and the heat dissipation assembly can all be immersed into the transformer oil. A circulating pump and a heat exchanger are arranged outside the case, so that the transformer oil forms a circulating and cooling loop. According to the immersed case oil cooling circulation and heat dissipation system, the transformer oil is used for directly making contact with an electronic device in a host of a computer to conduct all-directional cooling on electronic devices on the mainboard, and therefore the heat dissipation efficiency of the whole computer is improved. In addition, the revolving speed of a fan on the heat exchanger can be intelligently adjusted, and therefore the electronic devices on the mainboard can be kept in a constant-temperature state. The operation speed of the computer can be increased, in addition, the transformer oil in the device can slow down the oxidation loss of the electronic devices on the mainboard, the service life of the computer is prolonged, and therefore the purpose of saving energy in many aspects is achieved.

Description

A kind of immersion main frame oil cooling cycle cooling system
Technical field
The utility model belongs to field of radiating, relates to the heat radiation of host computer, especially a kind of immersion main frame oil cooling cycle cooling system.
Background technology
At present, the trend of advancing of computing machine electronic component is the future development to micro-nano high integration, although actively improving manufacturing process, the production firm of CPU and video card make its power more and more less, but CPU and its heat dissipation problem of video card that inevitably arithmetic capability is stronger are more and more serious, and, the noise of fan when high-speed rotation is very large, affects the mood of computer user work amusement.Existing fan air cooling technique has developed into bottleneck stage, and the rationality of arranging by improvement casing structure and mainboard electronic component is improved degree of heat radiation becomes a kind of trend already.Although Water Cooling Technology good heat dissipation effect, because its assembling is loaded down with trivial details and the factors such as support of the specific cabinet of needs and computer power, is not suitable for promoting to masses.
By retrieval, find following two pieces of relevant patent documents:
1, a kind of noise-free liquid cooled computer chassis (CN201035493Y), it comprises the cooling cabinet shell that high-heating radiation coefficient Heat Conduction Material is made, computing machine electronic unit sets within it and is equipped with in the chassis shell of insulativity heat-conducting liquid, and computing machine electronic unit is immersed in insulativity heat-conducting liquid.
2, a kind of oil cooling cycle calculations owner cabinet (CN103616939A), has and holds the casing that mainboard and plate carry equipment, is fixed on the mainboard of casing side plate, is fixed on cpu heat, video card and internal memory on mainboard; Described box house is filled with mineral oil, and the heat that cpu heat, video card and internal memory distribute described in recovery by mineral oil dispels the heat.The two ends of described casing are respectively equipped with external circulation line, and external circulation line is connected with oil pump; Under running status, the mineral oil that casing is filled enters external circulation line circulation through oil pump; The outside surface of described external circulation line is provided with a plurality of heat radiator, and the heat of the mineral oil of the external circulation line of flowing through is absorbed and distributed by described a plurality of heat radiator.
Although above-mentioned patent is identical with the technical matters that present patent application solves, and all electronic component is not reequiped, the radiating effect reaching is also without experimental verification, and the technical scheme of taking with the application has essential difference.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of scientific structure design reasonable, can comprehensive main frame be dispelled the heat, and keeps the immersion main frame oil cooling cycle cooling system of main frame temperature constant.
The technical scheme that the utility model technical solution problem adopts is:
A kind of immersion main frame oil cooling cycle cooling system, comprise mainframe box, be arranged on power supply, hard disk, the mainboard in mainframe box and be arranged on the radiating subassembly on mainboard, in mainframe box, inject the transformer oil that accounts for mainframe box volume 1/2-2/3, make power supply, mainboard and radiating subassembly all can be immersed in this transformer oil, configuration cycles pump and heat exchanger outside mainframe box, make transformer oil form a circulation, cooling loop.
And, described radiating subassembly consists of heat pipe, radiating fin and fastener, fastener is by pressing plate and backboard is assembled forms, backboard is arranged on the back side of the corresponding CPU of mainboard position, at the upper surface of the positive CPU of the mainboard heat pipe of closely arranging, described heat pipe is U-shaped, opening is placed towards horizontal direction, its integral body can be divided into three sections of flat portion, lower flat portion and curved portions, the lower flat portion of this U-shaped heat pipe and the laminating of the upper surface of CPU, the upper flat portion of this U-shaped heat pipe and the pressing plate laminating of pressing above it, setting-in radiating fin between the upper flat portion of U-shaped heat pipe and lower flat portion.
And, in the inside and outside both sides of heat pipe curved portions, respectively paste a copper sheet.
And, between the space that flat portion and CPU surround under adjacent two heat pipes, fill heat-conducting silicone grease.
And described heat exchanger is the adjustable circulation radiator of temperature control.
Advantage of the present utility model and good effect are:
1, native system utilizes the features such as transformer oil insulate, specific heat capacity is large, good heat conductivity, it is directly contacted with the electron device in host computer, be equivalent to change the heat eliminating medium in main frame, the electron device on mainboard has been carried out to comprehensive cooling, thereby improved the radiating efficiency of complete machine.
2, native system adopts oil cooling mode to lower the temperature to host computer, except can making each device temperature reduction of computer, because transformer oil is opened electron device and air insulated, make the electron device in main frame can, by air slow oxidation, also can significantly not extend the serviceable life of computer.
3, the heat exchanger of native system is temperature control tunable arrangement, by regulating rotation speed of the fan on heat exchanger can make temperature in chassis substantially remain unchanged.
4, native system not only can be accelerated the arithmetic speed of computing machine, the electric energy of fan loss in the time of also can reducing CPU and video card and independently dispel the heat, and the electric energy loss bringing because of mainboard electronic component excess Temperature.
5, native system utilizes external circulating device cooling transformer oil, just can give up the original air-cooled radiating device of computer, has avoided the impact of cabinet internal fan wearing and tearing on radiating effect, has broken away from the loaded down with trivial details puzzlement of existing equipment dedusting simultaneously.
6, native system is all general to the mainboard of all models, does not need to consider the topology layout of mainboard, is conducive to like this reduce costs energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structure enlarged drawing of radiating subassembly in Fig. 1;
Fig. 3 is the vertical view of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and by specific embodiment, the utility model is described in further detail, and following examples are descriptive, are not determinate, can not limit protection domain of the present utility model with this.
An immersion main frame oil cooling cycle cooling system, comprises mainframe box 2, is arranged on power supply 11, hard disk 1, the mainboard 9 in mainframe box and is arranged on the radiating subassembly 10 on mainboard.
Innovative point of the present utility model is:
1, in mainframe box, inject the transformer oil 8 that accounts for mainframe box volume 1/2-2/3, make power supply, mainboard and radiating subassembly all can be immersed in this transformer oil, configuration cycles pump 7 and heat exchanger 5 outside mainframe box, between ebullator and mainframe box, be connected oil pick-up tube 4, between heat exchanger and mainframe box, be connected draw-off pipe 3, between ebullator and heat exchanger, be connected oil guide pipe 6.Transformer oil enters into ebullator by oil pick-up tube, then enters into heat exchanger inside via oil guide pipe, in heat exchanger, after heat-shift, by draw-off pipe, gets back to mainframe box, forms thus circulation, the cooling circuit of transformer oil.
2, described radiating subassembly consists of heat pipe, radiating fin 14 and fastener, fastener is by pressing plate 12 and backboard 17 is assembled forms, backboard is arranged on the back side of the corresponding CPU16 of mainboard position, at the upper surface of the positive CPU of the mainboard heat pipe of closely arranging, described heat pipe is U-shaped, and opening is placed towards horizontal direction, and its integral body can be divided into 19 3 sections of flat portion 13, lower flat portion 15 and curved portions, the lower flat portion of this U-shaped heat pipe and the laminating of the upper surface of CPU, the upper flat portion of this U-shaped heat pipe and the pressing plate laminating of pressing above it.Setting-in radiating fin between the upper flat portion of U-shaped heat pipe and lower flat portion, described radiating fin is square, four jiaos at radiating fin are all shaped with vertical bolt hole, its effect is to make bolt can pass successively backboard, radiating fin and pressing plate, again by nut engagement locking, thereby heat pipe and radiating fin and CPU are fitted tightly, effectively conduct heat.
3, described heat exchanger is the adjustable circulation radiator of temperature control, the temperature signal that it sends out by temperature element regulates the upper rotation speed of the fan of water row, thereby the temperature that makes electron device in cabinet maintains 40 ℃ of following a certain range of stability, can make the running status of CPU good.The structure of heat exchanger is prior art, at this, does not narrate.
For make connection between heat pipe more closely, not loose, reduce space, in the inside and outside both sides of heat pipe curved portions, respectively paste a copper sheet 18, the curved portions of U-shaped heat pipe is clipped in the middle, make originally independently heat pipe link together.
For the heat of CPU can be effectively delivered on heat pipe, make cpu temperature remain on one can steady operation level, prevent CPU and damage because heat radiation is bad, between the space that flat portion and CPU surround under adjacent two heat pipes, fill heat-conducting silicone grease (not shown).
In order to make the heat energy of transformer oil even, effectively transmit, oil pick-up tube is distributed into two-way, its mouth of pipe is respectively towards the two ends of heat pipe, the mouth of pipe of draw-off pipe is placed in to the top of heat pipe, can directly wash away heat pipe and radiating fin, radiating fin is carried out to forced convertion heat radiation, the heat that CPU work is produced is transmitted in transformer oil.
Design concept of the present utility model:
Transformer oil is a kind of fraction products of oil, and transformer oil has the dielectric strength more much higher than air.Electronic equipment is immersed in oil, not only can improves dielectric strength, but also the erosion of the gas that can keep away from moisture.The specific heat ratio air of transformer oil large, is commonly used for cooling medium.This cooling system has utilized these characteristics of transformer oil to design just.In computer host box, except mechanical type hard disk can not be immersed in oil, all the other all parts all will be immersed in oil.Utilize the above-mentioned characteristic of transformer oil to dispel the heat in all directions to computer host box.
CPU is the main heat production device in mainframe box, utilizes the effective feature of heat pipe for thermal conductivity, and the heat that CPU is produced is derived.Between the upper flat portion of heat pipe and lower flat portion, radiating fin is installed, has indirectly been increased the contact area of CPU and transformer oil.Transformer oil flows out from the draw-off pipe of heat pipe top, washes away the radiating fin of CPU, and radiating fin is carried out to forced-convection heat transfer, and the heat that CPU work is produced is transmitted in transformer oil.Utilize ebullator that near high temperature transformer oil CPU radiating fin is extracted out, by the forced-convection heat transfer of heat exchanger, the heat loss in transformer in air, transformer oil after cooling imports in cabinet again, wash away the radiating fin being arranged on heat pipe, reach the effect of forced-convection heat transfer.Also the transformer oil in cabinet has been applied to effective disturbance simultaneously.Certainly, this heat radiation process whole process is controlled by temperature element, by temperature, just changes rotation speed of the fan on heat exchanger, thereby makes temperature in chassis reach relatively stable.The main heat-radiation loop so just forming, has guaranteed the efficiently radiates heat to CPU.Secondly, when CPU moves under very high power, the temperature of CPU may approach " danger " temperature, by temperature element, measure the temperature of CPU, when the temperature of CPU is approximate while reaching " danger " temperature, the varying speed switch of pump flow can be opened thereupon, with the heat exchanger common radiating effect that strengthens that cooperatively interacts, strengthen the heat radiation of CPU, make the temperature of CPU in a relatively suitable temperature range.
Theoretical Design of the present utility model calculates:
Through experiment, when computing machine moves under high load capacity, computer motherboard is immersed in 10L transformer oil, and in the situation that there is no external ebullator and heat exchanger, transformer oil has raise 15 ℃.By looking into the physical parameter of transformer oil, can obtain, the density of transformer oil is 0.895gcm 3, specific heat capacity is 2.09J (g ℃).
According to the knowledge of thermal conduction study, can calculate, transformer oil at one hour systemic heat (ignoring heat transformer oil and natural convection air heat exchange) is:
Q=cmΔt=2.09×10000×0.895×15=280582.5J
The performance index parameter of ebullator, lift H is 6 meters, flow q vfor 500L/h, power is 12W.
By actual measurement, near oil temperature CPU is than the high 3 ℃ of left and right of other local oil temperatures.Suppose ebullator near the oil temperature of extracting out CPU than air themperature high 10 ℃ (room temperature is by 20 ℃ of calculating).By looking into < < thermal conduction study > >, can to obtain the oily forced-convection heat transfer coefficient of heat transfer be 50-1500W (m 2k) (convection transfer rate is pressed 200W/ (m here 2k) calculate), the Forced Air Convection heat exchange coefficient of heat transfer is 20-100W/ (m 2k) (convection transfer rate is pressed 30W/ (m here 2k) calculate), the oily side heat interchanging area of heat exchanger is 0.2m 2left and right, air side is added with fin, and inned coefficient is 10, and total fin efficiency is 0.6.
By experiment, by heat exchanger air themperature, risen 2 ℃, the temperature of transformer oil has declined 8 ℃, the log-mean temperature difference Δ t of heat exchanger mfor:
By looking into < < thermal conduction study > >, can obtain temperature correction coefficient ψ=0.9 of heat exchanger, therefore final heat exchanger convection heat transfer temperature difference t m' be:
Δt′ m=ψΔt m=0.9×4.32=3.90℃
Coefficient of heat transfer K is (heat transfer coefficient of ignoring metal):
K = 1 1 h 1 + 1 &eta;h 2 &beta; = 1 1 200 + 1 0.8 &times; 30 &times; 15 = 128.6 W / ( m 2 &CenterDot; K )
Can calculate thus the heat Q that in 1 hour, transformer loses by heat exchanger sfor:
Q s=KAΔt′ m=128.6×0.15×3.90×3600=270831.6J
By comparing Q and Q scan clearly find out, have the effect of ebullator and heat exchanger, the heat in cabinet in transformer oil can effectively be lost in air, makes transformer oil keep a comparatively stationary temperature, and then the temperature of mainboard can be controlled effectively, improve the job stability of computing machine.
Benefit in performance analysis of the present utility model:
One, Energy Saving Benefit Analysis
Immersion main frame oil cooling cycle cooling system seems more than the energy of ordinary cooling system loss, but the energy consumption of comparing two with conventional water-cooling heat radiating system is identical, but conventional water-cooling heat radiating system can only dispel the heat to the specific position of mainboard, and immersion main frame oil cooling cycle cooling system can carry out integral heat sink to mainboard, some usual unconcerned heat producing components (as north and south bridge, memory bar etc.) also can effectively dispel the heat.Energy water consumption product with identical, have reached better radiating effect than water-cooled, and this is the energy-conservation of another kind of mode.
In addition, mainboard integral body is under a suitable working temperature, and each electronic component can be worked under best condition of work, has reduced the additional electrical energy loss bringing because of excess Temperature.
Two, Economic and Efficiency Analysis
Immersion main frame oil cooling cycle cooling system can reach better radiating effect, reduces the additional electrical energy loss that mainboard electronic component brings because of excess Temperature.Take one, to have the Internet bar of 100 computers be example, average every the computer electric energy that can save 20W per hour, and 1 year this Internet bar can save the electric energy of 17520kW so.By 0.5 yuan of calculating of every degree electricity, Internet bar can save 8760 yuan for 1 year.
Be more than to calculate from saving the angle of electric energy, immersion host computer oil cooling cooling system can also effectively completely cut off contacting of mainboard electronic component and air, slows down the oxidation loss of electronic component, protects effective connection of various interface; Electronic component at high temperature also can be accelerated loss rate, reduce by 3.8%, and every 10% its life-span of decline of chip temperature increases by 50% according to 1 ℃ of its operational reliability of the every rising of data display chip temperature.Therefore utilize immersion host computer oil cooling cooling system can extend the replacement cycle of host computer, save the cost bringing by changing various electronic components.
Three, social benefit analysis
Immersion oil cooling circulation cooling is a kind of brand-new radiating mode, and it has broken traditional heat radiation theory, has also brought considerable economic return simultaneously, makes people's life more efficiently convenient.The propagation of dispelling the heat by immersion oil cooling and popularization, also can make the theory of energy-saving and emission-reduction be rooted in the hearts of the people, and is also conducive to people and on the road of energy-saving and emission-reduction, carries out more deep exploration.
Simultaneously applying of immersion oil cooling circulation cooling, also can drive the development of an industrial chain, comprise used oil research and development of products, produce, the improvement of sale and radiator structure.Simultaneously under the environment of immersion oil cooling, allow chip business under new environment, to carry out the research and development of Related product, by the support of chip business, make electron device and the combination of immersion oil cooling environmental facies, the performance of computing machine is reached to higher level, make user experience and be further enhanced, thereby be conducive to the development of computer industry.

Claims (5)

1. an immersion main frame oil cooling cycle cooling system, comprise mainframe box, be arranged on power supply, hard disk, the mainboard in mainframe box and be arranged on the radiating subassembly on mainboard, it is characterized in that: in mainframe box, inject the transformer oil that accounts for mainframe box volume 1/2-2/3, make power supply, mainboard and radiating subassembly all can be immersed in this transformer oil, configuration cycles pump and heat exchanger outside mainframe box, make transformer oil form a circulation, cooling loop.
2. immersion main frame oil cooling cycle cooling system according to claim 1, it is characterized in that: described radiating subassembly is by heat pipe, radiating fin and fastener form, fastener is by pressing plate and backboard is assembled forms, backboard is arranged on the back side of the corresponding CPU of mainboard position, at the upper surface of the positive CPU of the mainboard heat pipe of closely arranging, described heat pipe is U-shaped, opening is placed towards horizontal direction, its integral body can be divided into flat portion, three sections of lower flat portion and curved portions, the lower flat portion of this U-shaped heat pipe and the laminating of the upper surface of CPU, the upper flat portion of this U-shaped heat pipe and the pressing plate laminating of pressing above it, setting-in radiating fin between the upper flat portion of U-shaped heat pipe and lower flat portion.
3. immersion main frame oil cooling cycle cooling system according to claim 2, is characterized in that: a copper sheet is respectively pasted in the inside and outside both sides in heat pipe curved portions.
4. immersion main frame oil cooling cycle cooling system according to claim 2, is characterized in that: between the space that flat portion and CPU surround under adjacent two heat pipes, fill heat-conducting silicone grease.
5. immersion main frame oil cooling cycle cooling system according to claim 1, is characterized in that: described heat exchanger is the adjustable circulation radiator of temperature control.
CN201420220593.8U 2014-04-30 2014-04-30 Immersed host oil cooling circulation and heat dissipation system CN203882259U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105338788A (en) * 2015-10-30 2016-02-17 重庆帕特龙智通电子科技有限公司 High-power electronic equipment heat radiation structure
CN107328594A (en) * 2017-07-01 2017-11-07 西北民族大学 It is a kind of with measure device and method of the simple loop to plate type heat exchanger heat transfer coefficient
WO2018098911A1 (en) * 2016-11-29 2018-06-07 广东合一新材料研究院有限公司 Partial immersion liquid-cooling system for cooling server
CN109843025A (en) * 2019-03-21 2019-06-04 东南大学 A kind of immersion cooling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105338788A (en) * 2015-10-30 2016-02-17 重庆帕特龙智通电子科技有限公司 High-power electronic equipment heat radiation structure
WO2018098911A1 (en) * 2016-11-29 2018-06-07 广东合一新材料研究院有限公司 Partial immersion liquid-cooling system for cooling server
CN107328594A (en) * 2017-07-01 2017-11-07 西北民族大学 It is a kind of with measure device and method of the simple loop to plate type heat exchanger heat transfer coefficient
CN109843025A (en) * 2019-03-21 2019-06-04 东南大学 A kind of immersion cooling device

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Granted publication date: 20141015

Termination date: 20150430