CN101790300A - Data center machine room cooling system featuring cool air distribution according to needs - Google Patents
Data center machine room cooling system featuring cool air distribution according to needs Download PDFInfo
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- CN101790300A CN101790300A CN 201010111575 CN201010111575A CN101790300A CN 101790300 A CN101790300 A CN 101790300A CN 201010111575 CN201010111575 CN 201010111575 CN 201010111575 A CN201010111575 A CN 201010111575A CN 101790300 A CN101790300 A CN 101790300A
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- 238000001816 cooling Methods 0.000 title claims abstract description 66
- 238000004378 air conditioning Methods 0.000 claims abstract description 31
- 230000017525 heat dissipation Effects 0.000 claims abstract description 15
- 238000013461 design Methods 0.000 claims description 30
- 238000004891 communication Methods 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 13
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- 238000005265 energy consumption Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 6
- 238000004134 energy conservation Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 3
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- 238000009423 ventilation Methods 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
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- 206010037660 Pyrexia Diseases 0.000 description 1
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- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
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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
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20736—Forced ventilation of a gaseous coolant within cabinets for removing heat from server blades
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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
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20718—Forced ventilation of a gaseous coolant
- H05K7/20745—Forced ventilation of a gaseous coolant within rooms for removing heat from cabinets, e.g. by air conditioning device
Abstract
The invention relates to a data center machine room cooling system featuring cool air distribution according to needs, comprising an air-conditioning unit and a heat dissipation air channel. Cold air provided by a refrigerating unit is distributed to equipment cabinets through an air inlet header pipe and an air inlet adapter pipe according to cold energy the equipment cabinets need and then is distributed to servers according to the cold energy the servers in the equipment cabinet need through a cold air distribution box, so as to carry out forced air cooling on heated components. The cooling system optimizes airflow movement and realizes air distribution according to needs, thus being an efficient and energy-saving data center machine room cooling system heat dissipation solution.
Description
Technical field
The present invention relates to cooling system, particularly to being placed in the cooling system that the electronic communication equipments such as server in the rack carry out aeration-cooling processing in data central machine room, the power supply machine room.
Background technology
Along with the raising of the integrated degree of server, the power of Single Cabinet significantly promotes in the data center machine room.High power consumption certainly leads to high heating, and this makes the local pyrexia in the rack become severe more, and temperature gradient changes greatly, and the aeration-cooling processing of facing electronic communication equipments such as server is complicated more.This cooling system to the data central machine room has proposed new challenge.
At present, PUE (Power Usage Effectiveness) has become current in the world data center's electricity usage efficient measurement index.The total equipment energy consumption of PUE=data center/information technoloy equipment energy consumption.Generally believe that in the industry the PUE value of data center should be lower than 2.External advanced machine room PUE value can reach 1.7, and the PUE mean value of China this means the every consumption 1 degree electricity of information technoloy equipment then more than 2.5, and just having nearly, the electric energy of 1.5 degree is consumed by other facility of machine room.Particularly generally about 3, this explanation has a large amount of electric energy all to be consumed by power supply and cooling system to middle and small scale machine room PUE value, and the electric energy that is used for information technoloy equipment seldom.
According to statistics, present domestic data center machine room 140 square meters are following accounts for following the accounting for about 75% of 50%, 400 square meter.If roughly calculate according to installation amount, the total machine room power consumption in the whole nation is spent to 20,000,000,000 degree 10,000,000,000.The energy consumption of data center machine room mainly is divided into four parts: server or other electronic communication equipment electricity consumption, cooling system electricity consumption, illumination and office electricity consumption, electric power system energy consumption.Each machine room of its composition has nothing in common with each other.But haply, the above two account for major part, respectively are 40%～45%, and both account for the microcephaly back, respectively are 5%～10%.From above statistical analysis as can be seen except the necessary information technoloy equipment electricity consumption of data center's function, the cooling system power consumption is the absolute major part of machine room power consumption, and the design data central machine room cooling system of therefore making rational planning for is significant to reduction machine room energy consumption, minimizing operating cost.
The cooling system of data center machine room mainly is made up of air-conditioning unit and heat dissipation wind channel two parts at present.And the cold wind that most of machine rooms all adopt the air-conditioning unit to produce feeds the plenum chamber of machine room raised flooring below, and the through hole of offering from the ventilation floor in rack the place ahead upwards enters machine room again, makes the machine room cooling.Rack adopts face-to-face, back-to-back mode to arrange that cold wind enters from cabinet front in the machine room, flows out from the back side, as low-temperature receiver the server of settling in the rack is carried out aeration-cooling processing with the environment space of machine room.
Under with the situation of building environment space as low-temperature receiver, plenum chamber being set former is to expect that each the piece ventilation floor that is arranged in whole equipment room can have roughly the same air quantity, but simulation calculation according to CFD, actual conditions are really not so, flow by every ventilation floor has than big-difference, and this obviously is unfavorable for the Homogeneouslly-radiating of each rack.And, because cold wind enters machine room from floor surface and sucks rack again, make the interior upper and lower temperature distributing disproportionation of rack even, thereby cause the cooling heat dissipation effect of top server and bottom server inconsistent.To this, some machine rooms are arranged in order to improve the radiating effect of upper space, the air current composition that enters and flow out rack is improved.A part is promptly flowed out from the rack back behind server, some goes out from the rack overhead stream in addition, the backflow that participates in top, rack front mixes, the gas flow temperature of mixing is descended to some extent, slave enters rack in the portion front cashier's office in a shop again, thereby the cooling of rack internal upper part server is made moderate progress.Such as, what Chinese patent CN1901792A solved is exactly this problem.But this scheme can not avoid hot blast to mix the situation that supplies the server heat transmission more again with cold wind fully.
Compare with such scheme, the machine room that has is in order to improve radiating effect, cold wind is directly sent into rack from plenum chamber through the rack bottom, upwards flow out rack through the ready-made passage that forms by frame, server etc. in the rack again, from bottom to top the server in the rack is dispelled the heat.This air supply mode can partly overcome the inhomogeneities of each rack air quantity, but still the cold wind temperature of incoming flow that is used to cool off upper and lower each server in the same rack is not quite similar, this cooling effect of server that certainly will cause being in the top is not as being in the server of below.Balance howsoever always causes the server that is in the bottom to cross cold or is in the overheated situation of server on top, and the former wastes energy, and the latter fails to reach the operational environment requirement of server.
Analyze theoretically, when planning and designing data center machine room cooling system, at first should make the refrigerating capacity Q of air-conditioning unit
0Satisfy:
Q
0≥P+Q
P is equipment and the electrical power of illumination and the electric energy dissipation power sum of defeated electric power system except that air-conditioning in the machine room in the formula, and Q is the heat of machine room from its outdoor suction;
Secondly, should make the refrigerating capacity of air-conditioning system fully obtain utilizing, this depend on machine room overall situation air current composition whether rationally and the inner subenvironment air current composition of rack whether reasonable.In case after the refrigerating capacity of air-conditioning system size was determined, the air current composition of the inner subenvironment of machine room overall situation and rack seemed even more important.
In the past, the data center that has was the large space of the whole equipment room low-temperature receiver as the server heat radiation, and rack and inner server thereof suck cold wind from the large space of machine room.What hardly realize the system requirements cooling is server, is not the machine room large space, and in fact is to have way to make the cold wind from air-conditioning directly enter rack and server without the machine room overall situation.From the angle of utilizing of the energy, the temperature that reduces the machine room overall situation can make the machine room and the temperature difference between outdoor strengthen, and this certainly will strengthen the outdoor heat delivery in machine room of machine room, thereby the burden of increasing machine room cooling system causes a large amount of energy wastes.And the local improvement that air-supply is done to rack, often can only change the subenvironment of air current composition passively, the thermal current of avoiding playing cooling effect is useed as the use of " cold " air-flow again with unordered mixing of cold airflow, consider how in being furnished with the machine room of a plurality of racks, to form rational temperature field that helps server heat radiation in the rack most, thereby be difficult to make full use of the cold that air-conditioning system produces and reach efficient, energy-conservation radiating effect.
Summary of the invention
The invention provides a kind of cold data center machine room cooling system of joining as required, its first purpose is intended to break in the past the large space of the whole equipment room general layout as server heat radiation low-temperature receiver, breaking in the past cold wind allows air-flow existing physics framework in rack---to comprise cabinet framework and electronic equipment---naturally after entering rack, unordered mobile situation in the gas channel of Gou Chenging passively, the angle of subenvironment air-flow in rationalization's machine room overall situation air-flow and the rack, design a kind of optimization air-flow trend, promptly allow the cold wind from air-conditioning flow directly into cooling object---server as far as possible, and make each server obtain dissipate cold that heat be complementary required with it; Second purpose is after the settlement server heat radiation, compares with machine room overall situation temperature from the air-flow of server discharge still to have certain cold, utilizes it to make the cooling of machine room overall situation again.This is a solution that overcomes the energy-efficient of the deficiencies in the prior art and be applicable to highly dense type machine room.
For achieving the above object, the technical solution used in the present invention is: a kind ofly join cold data center machine room cooling system as required, form by air-conditioning unit and heat dissipation wind channel two parts, described air-conditioning unit has air inlet and air outlet, described heat dissipation wind channel is made up of air intake passage, service aisle and return air channel, and described air outlet, air intake passage, service aisle, return air channel and air inlet are followed in series to form the loop;
Described air intake passage has at least one air intake house steward, every air intake house steward's air intake is communicated with the air outlet of air-conditioning unit, and the air intake house steward is from the moving variable cross-section design of vertically adopting iso-cross-section design or cross-sectional area gradual change from big to small of air intake longshore current, the position of corresponding each rack is provided with gas vent on air intake house steward's gas flow paths, each gas outlet settles a rack air intake to take over, this rack air intake is taken over and is positioned at rack bottom or top, the Door of communication apparatus cabinet back side vertically is provided with a cold wind distributor box, this cold wind distributor box is a body structure, end sealing in casing top and the two ends, bottom, the other end is offered the cold wind import, this cold wind import is taken over butt joint with corresponding rack air intake when Door of communication apparatus cabinet is in closing state, the moving variable cross-section design of vertically adopting iso-cross-section design or cross-sectional area gradual change from big to small of the cavity longshore current of cold wind distributor box, cold wind distributor box casing corresponding each server cold wind air inlet position on the side of server is provided with the cold wind outlet;
Described service aisle is made up of a plurality of servers in the rack own originally inner chamber and gas channel, and each cold wind outlet of cold wind distributor box is corresponding with a server cold wind air inlet, makes cold wind be blown into service aisle;
Described return air channel comprises vertical setting of types wind passage, rack air draft adapter and return air house steward, vertical setting of types wind passage is a body structure, this casing is installed in the back side, rack back door, casing corresponding each server air outlet position on the side of server is provided with return air inlet, an end is airtight in bottom half and the two ends, top, other end opening, described opening is taken over the rack air draft and is docked when the rack back door is in closing state, rack air draft adapter is communicated with the return air house steward, and return air house steward's outlet air end passes to the air inlet place of air-conditioning unit.
Related content in the technique scheme is explained as follows:
1, the present invention is the cooling system that is applied to data center machine room, and every cover cooling system generally is made up of an air-conditioning unit and corresponding heat dissipation wind channel.In the practical application, can select a cover cooling system as required or overlap the scheme that cooling system uses simultaneously more, quantitatively not limit for data center machine room.
2, the present invention instead descends plenum chamber with air intake passage, gas has always just flow through from air conditioner outlet in it, thereby temperature is minimum relatively, and the space that itself and plenum chamber adjoin downwards (establishing order the is an air-conditioned room) temperature difference reaches more than 10 ℃, and heat exchange certainly will take place.And when adopting air intake passage, heat-insulation and heat-preservation in addition, both compare can energy-conservation 5～8%.Simultaneously, adopt plenum chamber, usually cable is optionally at random in plenum chamber during engineering construction, this will cause heat along the fabulous lead conduction of heat conductivility, and air-flow also can cause flow resistance to strengthen because of unordered the laying of cable when flowing in plenum chamber, also increasing energy consumption about 1～3% extraly.
3, because the present invention is designed to closed loop in order to reduce power consumption with the heat dissipation wind channel of cooling system, make the large space of whole equipment room not be re-used as the low-temperature receiver of server heat radiation, its temperature is higher than the temperature in the rack, is favourable from energy-conservation angle.But in summer, the too high operation and maintenance to the staff of environment space temperature is very unfavorable in the machine room.In order to solve the present invention of this contradiction can be provided for the machine room cooling on the return air house steward draining door.Opening air door can utilize return air house steward's air that environment space in the machine room is lowered the temperature.Closing air door can isolate environment space in cooling system and the machine room.Because machine room is normally unattended, be 25 ℃ so the temperature of machine room there is no need as set usually at present, can be 30～31 ℃, when outdoor environment temperature is 40 ℃, therefore changes the energy consumption that causes and reduce and can reach more than 30%.
4, in the technical solution of the present invention, air intake passage has at least one air intake house steward.Its implication is that the air intake house steward can be one, two or many for a cover cooling system.If consider the uniformity that cold wind distributes, it is best selecting two air intake house stewards.But these two air intake house stewards' cross-sectional sizes wants consistent with length, and is set up in parallel, and the linkage section between the air outlet of two air intake house stewards' air intake and air-conditioning unit is that benchmark is symmetrical arranged with the air outlet center.
5, in the technical solution of the present invention, the design of the variable cross-section of described air intake house steward and cold wind distributor box can be adopted linear variable cross-section design or the design of non-linear variable cross-section.Purpose is to make the cold wind that enters the air intake house steward be diverted to the flow of each rack and flow that the cold wind that enters the cold wind distributor box is diverted to each server is subjected to a certain degree control.
6, in the technical solution of the present invention, described air intake house steward can be laid in below, floor (such as the raised flooring below), also can be laid in the top, floor and be positioned at the rack bottom, can also be laid in the top of rack.Described return air house steward is laid in the rack top, perhaps is laid in the top, floor and is positioned at the rack bottom, perhaps is laid in the below, floor.This design and construction by machine room is determined.
7, in the technical solution of the present invention, for the server power that adapts to rack and do not use as yet, enable, dispose multiple situation such as vary, be provided with during the rack air intake is taken over and open and close adjusting device and air intake aerofoil fan, with wind path, the adjusting intake of closing or open this rack.This switching adjusting device can be valve, also can be the cover plate that has plug or pumping board.
8, in the technical solution of the present invention, enough flows are arranged, can in the rack air draft is taken over, be provided with the air draft aerofoil fan, to strengthen the air draft ability in order to ensure the air-flow of heat transmission.
Operation principle of the present invention is: the cold wind that refrigerating units is provided is distributed to each rack by the air intake house steward of the first order by required heat dissipation capacity, distribute to the cold wind of rack and take over the cold wind distributor box that enters the rack front portion, again by partial cold wind distributor box each server-assignment cold wind in rack from the rack air intake.This cold wind carries out air blast cooling to the heating components and parts under the fan that server carries helps, make its heat radiation cooling.Heated then air flows backward and discharges from the server rear portion, the air of discharging enters the vertical setting of types wind passage at rack rear portion, and through this passage inflow rack air draft adapter, be pooled to the return air house steward again, get back to the air inlet of air-conditioning unit at last from return air house steward outlet air end, form the closed circulation loop with this.In this cooling system, cold wind is not earlier with the whole cooling in machine room inner space, guarantee that electronic communication equipments such as server are under the operational environment of regulation, but directly provide cold wind that the heating components and parts are forced cooling to electronic communication equipments such as servers, thereby can effectively utilize the cold that refrigerating units produces the heating components and parts are cooled off, with energy savings.In addition, the return air house steward also is furnished with the draining door that is used for the machine room cooling, makes an amount of cold wind enter machine room in case of necessity, makes machine room be in the suitable state of temperature of a setting.
Because the technique scheme utilization, the present invention compared with prior art has following advantage and effect:
1, the present invention by air intake passage and return air channel directly the electronic communication equipments such as server in rack send cold wind and return air, the large space of whole equipment room is not re-used as the low-temperature receiver of server heat radiation, the temperature of machine room inner space is higher than the temperature in the rack, thereby effectively utilized the cold that refrigerating units produces, avoided waste, reduce power consumption, saved the energy.
2, the design of air intake passage of the present invention and return air channel makes cold wind only enter server by requisite path, electronic devices and components to heating dispel the heat, and avoided before the heat radiation cold wind with dispel the heat after the air-flow generation channelling situation of mixing, thereby having improved the utilance of radiating efficiency and cold, the cold that refrigerating units is produced is utilized.
When 3, air intake house steward of the present invention (first order distribution) and cold wind distributor box (second level distribution) adopt the variable cross-section design, the cold (cold flow) that refrigerating units is produced distributes by the required heat dissipation capacity of each server, the phenomenon of the server local overcooling that reduce server local overheating that rack inside has as far as possible, has, reach and both guarantee that whole servers are in the necessary state of cooling, do not have excessive cold waste again.And mostly adopted raised flooring as plenum chamber in the past, and the cold wind that refrigerating units produces is directly sent into plenum chamber, then by floor air-supply down, and the air current composition mode of top return air.Because the height of plenum chamber generally can only be accomplished 0.5m, be not enough to constitute plenum chamber (the plenum chamber height will reach 2m) from the such height of fluid mechanics, therefore the cold wind flow that is assigned to each rack can't satisfy uniformity requirement, and this is confirmed by fluid emulation CFD.
Description of drawings
Accompanying drawing 1 is cooling system schematic diagram of the present invention;
Accompanying drawing 2 is air intake house steward plan view from above of the present invention;
Accompanying drawing 3 is the turnover wind access diagram of rack of the present invention;
Accompanying drawing 4 is the vertical view of rack of the present invention;
Accompanying drawing 5 is cold wind distributor box front view of the present invention;
Accompanying drawing 6 is cold wind distributor box cutaway view of the present invention;
Accompanying drawing 7 is the A-A cutaway view of Fig. 6;
Accompanying drawing 8 is taken over stereogram for rack air intake of the present invention;
Accompanying drawing 9 is vertical setting of types wind passage stereogram of the present invention;
Accompanying drawing 10 is taken over stereogram for rack air draft of the present invention;
Accompanying drawing 11 is air intake house steward variable cross-section schematic diagram of the present invention;
Accompanying drawing 12 is the various combination schematic diagrames of air intake house steward and return air house steward position.
In the above accompanying drawing: 1, air-conditioning unit; 2, air inlet; 3, air outlet; 4, air intake house steward; 5, air intake; 6, the rack air intake is taken over; 7, rack; 8, cold wind distributor box; 9, cold wind import; 10, cold wind outlet; 11, vertical setting of types wind passage; 12, rack return air arm; 13, return air house steward; 14, return air inlet; 15, the rack air draft is taken over; 16, outlet air end; 17, draining door; 18, air draft aerofoil fan; 19, Guan Gai; 20, plug; 21, preceding deep bead; 22, cold wind air inlet; 23, large sealing packing ring; 24, small sealing ring; 25, floor; 26, rear wind-break panels; 27, server; 28, server rear tube; 29, convergent divergent channel; 30, Door of communication apparatus cabinet; 31, rack back door; 32, air draft sealing ring; 33, air intake aerofoil fan.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment: a kind ofly be used for the cooling system that data center machine room carries out aeration-cooling processing for the electronic communication equipments such as server be placed in rack
Fig. 1 is the cooling system schematic diagram, and this system is made up of air-conditioning unit 1 and heat dissipation wind channel two parts.Air-conditioning unit 1 has air inlet 2 and air outlet 3.Described heat dissipation wind channel is made up of air intake passage, service aisle and return air channel.Described air outlet 3, air intake passage, service aisle, return air channel and air inlet 2 are followed in series to form the loop.
Described air intake passage has two air intake house steward 4 (see figure 2)s, every air intake house steward places (see figure 1) under the movable floor 25 of machine room, and the one group of rack 7 that correspondingly is arranged in a row is arranged on floor 25, every air intake house steward's 4 air intake 5 is communicated with the air outlet 3 of air-conditioning unit 1, and air intake house steward 4 designs (seeing Figure 11) from moving iso-cross-section design or the cross-sectional area variable cross-section from big to small of vertically adopting of air intake 5 longshore currents.The position of corresponding each rack 7 upwards is provided with gas vent on air intake house steward 4 gas flow paths, each gas outlet settles a rack air intake to take over 6 (see figure 3)s, this rack air intake is taken over 6 and is positioned at rack 7 bottoms, Door of communication apparatus cabinet 30 back sides vertically are provided with a cold wind distributor box 8, this cold wind distributor box 8 can adopt a plastic box, box height and width and Door of communication apparatus cabinet 30 are roughly the same, the casing top seal, side by server 27 has cold wind outlet 10, bottom half is provided with cold wind import 9, this cold wind import 9 is when Door of communication apparatus cabinet 30 is in closing state, the rack air intake corresponding with the below taken over 6 butt joints, both are divided into 1～3mm between the upper and lower during butt joint, follow the jet rule from the cold wind of rack air intake adapter 6 ejections and all enter casing.The cavity of cold wind distributor box 8 adopts area variable cross-section design (seeing Fig. 5～7) from big to small from bottom to top.
Described service aisle is made up of a plurality of servers in the rack 7 27 own originally inner chamber and gas channel, and each cold wind outlet 10 of cold wind distributor box 8 is corresponding with a server cold wind air inlet 22, makes cold wind be blown into service aisle.Cold wind outlet 10 can be many row's cylindrical void (see figure 5)s or arrange circular hole more that its row's number is corresponding on quantity and position with rack 7 interior server Unit 27 with the position.When the opposite in these holes is provided with server 27, the hole is opened wide, the hole can not blocked up when having server.The cold wind that penetrates from these holes is also followed the air intake vent in jet rule directive server 27 fronts.
Described return air channel is made up of vertical setting of types wind passage 11, rack air draft adapter 15, rack return air arm 12 and return air house steward 13.Vertical setting of types wind passage 11 can adopt rectangle plastic box (see figure 9), this casing is installed in rack back door 31 back side (see figure 3)s, corresponding from bottom to top each the server 27 air outlet position of casing are provided with return air inlet 14, when being mounted with server 27, open corresponding return air inlet 14, allow server discharge thermal current and be blown into vertical setting of types wind passage 11.When not settling server,, avoid thermal current oppositely to flow out from vertical setting of types wind passage 11 again with plug or pumping board sealing return air inlet 14 (not drawing among the figure).Because server 27 length in the same rack 7 may be inequality, this can make the rear end of server 27 and the distance between the vertical setting of types wind passage 11 unequal, at this moment between the return air inlet 14 of the rear end of server 27 and vertical setting of types wind passage 11, one section server rear tube 28 (see figure 3) can be installed, server rear tube 28 all enters in the vertical setting of types wind passage 11 by the thermal current that air draft sealing ring 32 is discharged server 27, avoids side direction to release.The bottom half of vertical setting of types wind passage 11 is airtight, upper end open, relevant position on the rack top is fixed with the rack air draft and takes over 15, the upper end open of vertical setting of types wind passage 11 is docked with the rack air draft adapter 15 on the rack top when rack back door 31 is in closing state, rack air draft adapter 15 is docked with return air arm 12 again, both are divided into 5～10mm between the upper and lower during butt joint, and cross sectional shape and measure-alike, can be during installation with between the two slit with adhesive tape or alternate manner looping, guarantee that airless leaks herein, make the rack air draft take over 15 air-flows that flow out and all enter rack return air arm 12 (see figure 1)s.Rack return air arm 12 is communicated with return air house steward 13, and return air house steward 13 outlet air end 16 makes thermal current finally get back to the air inlet 2 of air-conditioning unit 1 by convergent divergent channel 29 (see figure 1) that communicates with the air inlet 2 of air-conditioning unit 1.
In the present embodiment, in order to reduce power consumption, heat dissipation wind channel is designed to closed loop, makes the large space of whole equipment room not be re-used as the low-temperature receiver that server dispels the heat, and this moment, machine room inner space temperature may be higher than the temperature in the rack 7, was favourable from energy-conservation angle.But in summer, the too high operation and maintenance to the staff of environment space temperature is very unfavorable in the machine room.In order to solve this contradiction can be provided with the machine room cooling on return air house steward 13 draining door 17 (see figure 1)s.Opening draining door can utilize return air house steward 13 air that environment space in the machine room is lowered the temperature.Closing air door can isolate environment space in cooling system and the machine room.Because the present invention adopts the scheme that the electronic heating components and parts are directly cooled off, and still has considerable cold by contrast in the return air, be enough to make the machine room cooling.Simultaneously, computer room temperature is again the important parameter of data center machine room cooling system power consumption level, and U.S. heating, Refrigeration ﹠ Air-Conditioning IEEE bring up to 27 ℃ with the data center machine room temperature from 25 ℃.Can also further improve 3 ℃ and adopt this programme to calculate this temperature through theory, in addition more.Be the regulation and control computer room temperature, can be by regulating the actual needs that machine room cooling draining door 17 aperture sizes satisfy the machine room cooling, all the other return air are then directly got back to the air inlet 2 of refrigerating units 1 by return air house steward 13 outlet air end 16 through convergent divergent channel 29.In order to guarantee that return air can enter machine room by machine room cooling draining door 17 smoothly, the air inlet through air-conditioning is back to the air-conditioning unit again, and return air house steward 13 convergent divergent channel 29 is provided with the slit between the two for the machine room air circulation with the air inlet 2 of refrigerating units 1.
In the present embodiment, the design of the variable cross-section of air intake house steward 4 and cold wind distributor box 8 can be adopted linear variable cross-section design or the design of non-linear variable cross-section.Such as, for cold wind distributor box 8, linear variable cross-section design can in cavity swash plate be set or drop in leaf is realized; Non-linear variable cross-section design can be provided with curved slab and realize in cavity.For air intake house steward 4, linear variable cross-section design can adopt the taper pipe to realize, also can in square tube or pipe swash plate be set and realize, can also specialized designs meet pipeline of variable cross-section requirement or the like, gives an example no longer one by one here.Figure 11 is an air intake house steward variable cross-section schematic diagram.As can be seen from the figure, a line represents that air intake house steward 4 bottom surface is the inclined-plane, belongs to linear variable cross-section; The b line is represented convex surface on the bottom surface, and the c line is represented convex surface under the bottom surface, and they all belong to non-linear variable cross-section.Can calculate according to the fluid analogue simulation in the practical application and select, its objective is that the flow that makes the cold wind that enters air intake house steward 4 be diverted to each rack 7 is even.
In the present embodiment, air intake house steward 4 can be laid in 25 belows, floor (such as the below of the raised flooring among Fig. 3) and be positioned under the rack 7.Also can be laid in 25 tops, floor and be positioned at rack 7 bottoms.Also can be laid in rack 7 tops.And return air house steward 13 can be laid in rack 7 tops, perhaps above floor 25 and be positioned at rack 7 bottoms, perhaps is laid in 25 belows, floor.Air intake house steward 4 can make up mutually with return air house steward 13 laying mode.Such as shown in Figure 12 a being that air intake house steward 4 is laid in 25 belows, floor, and return air house steward 13 is laid in rack 7 tops; Shown in Figure 12 b is that air intake house steward 4 is laid in 25 belows, floor, and return air house steward 13 also is laid in 25 belows, floor; Shown in Figure 12 c is that air intake house steward 4 is laid in rack 7 tops, and return air house steward 13 also is laid in rack 7 tops; Shown in Figure 12 d is that air intake house steward 4 is laid in 25 tops, floor and is positioned at rack 7 bottoms, and return air house steward 13 is laid in rack 7 tops; Shown in Figure 12 e is that air intake house steward 4 is laid in 25 tops, floor and is positioned at rack 7 bottoms, and return air house steward 13 is laid in 25 tops, floor and be positioned at rack 7 bottoms.These design and constructions by machine room are determined.
In the present embodiment, air-flow in order to ensure heat transmission has enough flows, can take in 6 at the rack air intake air intake aerofoil fan 33 (see figure 3)s are set, can also take in 15 in the rack air draft air draft aerofoil fan 18 (seeing Figure 10, Fig. 3 and Fig. 4) is set, advance to strengthen, the air draft ability.
In the present embodiment,,, can the switching adjusting device be set in the port of rack air intake adapter 6 in order to regulate the balance of cold flow between each rack 7 because of the server power in each rack 7 can be different.This switching adjusting device can be that a pipe cover 19 (see figure 8)s, and pipe cover 19 and is made of blank cover plate, manages to cover 19 corresponding blank places and set plug 20, with adjusting circulation area and intake.Also can adopt other to open and close adjustment structure, explanation no longer one by one here.
In the present embodiment, better dock with service aisle, the position of server is not installed in rack 7 forward and backward deep bead all should be installed, to stop hot and cold air-flow channelling in order to make air intake passage.Between the air inlet 22 on outlet 10 of the cold wind of cold wind distributor box 8 and corresponding with service device 27 front panels, small sealing ring 24 (see figure 3)s are set, be under the closing state at Door of communication apparatus cabinet 30, this small sealing ring 24 can prevent cold wind basically from lateral leakage, forms the hermetically-sealed construction of jet side direction.Fig. 6 and Fig. 7 have provided and have adopted large sealing packing ring 23 to solve the problem of cold wind from lateral leakage, in order to substitute the effect of small sealing ring 24.Same principle also can be provided with air draft sealing ring 32 towards the one side of vertical setting of types wind passage 11 and solve this type of sealing problem in rack 7, see shown in Figure 3ly, is not described in detail.
The foregoing description only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (9)
1. join cold data center machine room cooling system as required for one kind, form by air-conditioning unit (1) and heat dissipation wind channel two parts, it is characterized in that: described air-conditioning unit (1) has air inlet (2) and air outlet (3), described heat dissipation wind channel is made up of air intake passage, service aisle and return air channel, and described air outlet (3), air intake passage, service aisle, return air channel and air inlet (2) are followed in series to form the loop;
Described air intake passage has at least one air intake house steward (4), every air intake house steward's (4) air intake (5) is communicated with the air outlet (3) of air-conditioning unit (1), and air intake house steward (4) is from the moving variable cross-section design of vertically adopting iso-cross-section design or cross-sectional area gradual change from big to small of air intake (5) longshore current, the position of corresponding each rack is provided with gas vent on the gas flow paths of air intake house steward (4), each gas outlet settles a rack air intake to take over (6), this rack air intake is taken over (6) and is positioned at below, rack (7) bottom or over top, Door of communication apparatus cabinet (30) back side vertically is provided with a cold wind distributor box (8), this cold wind distributor box (8) is a body structure, end sealing in casing top and the two ends, bottom, the other end is offered cold wind import (9), this cold wind import (9) is taken over (6) butt joint with corresponding rack air intake at Door of communication apparatus cabinet (30) when being in closing state, the moving variable cross-section design of vertically adopting iso-cross-section design or cross-sectional area gradual change from big to small of the cavity longshore current of cold wind distributor box (8), cold wind distributor box (8) casing corresponding each server cold wind air inlet (22) position on the side of server is provided with cold wind outlet (10);
Described service aisle is made up of a plurality of servers (27) in the rack (7) own originally inner chamber and gas channel, and each cold wind outlet (10) of cold wind distributor box (8) is corresponding with a server cold wind air inlet (22), makes cold wind be blown into service aisle;
Described return air channel comprises vertical setting of types wind passage (11), (15) and return air house steward (13) are taken in the rack air draft, vertical setting of types wind passage (11) is a body structure, this casing is installed in the back side, rack back door (31), casing corresponding each server air outlet position on the side of server is provided with return air inlet (14), an end is airtight in bottom half and the two ends, top, other end opening, rack back door (31) when being in closing state described opening and rack air draft take over (15) and dock, the rack air draft is taken over (15) and is communicated with return air house steward (13), and return air house steward's (13) outlet air end (16) passes to the air inlet (2) of air-conditioning unit (1) and locates.
2. cooling system according to claim 1, it is characterized in that: described air intake passage has two air intake house stewards (4), these two air intake house stewards' (4) cross-sectional sizes is consistent with length, and be set up in parallel, the linkage section between two air intake house stewards' (4) the air intake (5) and the air outlet (3) of air-conditioning unit (1) is that benchmark is symmetrical arranged with air outlet (3) center.
3. cooling system according to claim 1 is characterized in that: described rack air intake is taken over to be provided with in (6) and is opened and closed adjusting device and wind path, the adjusting intake of air intake aerofoil fan (33) to open or close this rack.
4. cooling system according to claim 1, it is characterized in that: place server (27) or preceding deep bead (21) be set at each place, unit in the described rack (7), between the cold wind of cold wind distributor box (8) outlet (10) and corresponding server (27) the cold wind air inlet (22) flexible seal ring is set, forms the hermetically-sealed construction of cold air jet side direction when being in closing state at Door of communication apparatus cabinet (30).
5. cooling system according to claim 1 is characterized in that: linear variable cross-section design or the design of non-linear variable cross-section are adopted in the variable cross-section design of described air intake house steward (4) and cold wind distributor box (8).
6. cooling system according to claim 1 is characterized in that: described air intake house steward (4) is laid in below, floor (25), perhaps is laid in top, floor (25) and is positioned at rack (7) bottom, perhaps is laid in rack (7) top.
7. cooling system according to claim 1 is characterized in that: described return air house steward (13) is laid in rack (7) top, perhaps is laid in top, floor (25) and is positioned at rack (7) bottom, perhaps is laid in below, floor (25).
8. cooling system according to claim 1 is characterized in that: described rack air draft is taken in (15) and is provided with air draft aerofoil fan (18).
9. cooling system according to claim 1 is characterized in that: when described return air house steward (13) was arranged on rack (7) top, return air house steward (13) was provided with several draining doors (17) that is used for the machine room cooling; When described return air house steward (13) was arranged on below, floor (25), the upper end of vertical setting of types wind passage (11) was provided with opening, and was provided with the draining door (17) that is used for the machine room cooling at this opening part.
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| CN 201010111575 CN101790300B (en) | 2010-02-08 | 2010-02-08 | Data center machine room cooling system featuring cool air distribution according to needs |
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| CN 201010111575 CN101790300B (en) | 2010-02-08 | 2010-02-08 | Data center machine room cooling system featuring cool air distribution according to needs |
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