CN109041547A - A kind of double cold source cooling connector devices of network cabinet - Google Patents
A kind of double cold source cooling connector devices of network cabinet Download PDFInfo
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- CN109041547A CN109041547A CN201811052670.2A CN201811052670A CN109041547A CN 109041547 A CN109041547 A CN 109041547A CN 201811052670 A CN201811052670 A CN 201811052670A CN 109041547 A CN109041547 A CN 109041547A
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- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 238000000605 extraction Methods 0.000 claims abstract description 46
- 239000002775 capsule Substances 0.000 claims abstract description 43
- 238000009413 insulation Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005057 refrigeration Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004378 air conditioning Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Central Air Conditioning (AREA)
Abstract
The present invention provides a kind of double cold source cooling connector devices of network cabinet, including return air channel, the return air channel have return air channel air outlet, the return air inlet for being connected to interior of equipment cabinet connecting for the return air inlet for air-conditioner with air conditioner；Air-flow switching channel, the air-flow switching channel have the air-flow switching channel air inlet connecting for the air conditioner air outlet with air conditioner, for by the heat extraction mouth outside air-flow discharge system；Xingfeng capsule channel, the Xingfeng capsule channel have the air outlet for being connected to interior of equipment cabinet, the fresh wind port for introducing exterior air-flow, the internal interface for being connected to air-flow switching channel；Air flow valve changeover module, the air flow valve changeover module are used to control the opening and closing of fresh wind port, internal interface, heat extraction mouth.Make cabinet that outer circulation fresh air refrigerating function not only can be used by the device, but also be able to use interior recycle compressor forced cooling function, simplifies the design of cabinet, reduces the energy consumption and cost of system.
Description
Technical field
The invention mainly relates to data center's air-conditioning technical field, the double cold source coolant interface dresses of specifically a kind of network cabinet
It sets.
Background technique
With the arriving of big data era, various data centers have become the very important economic base of all trades and professions and set
It applies, the importance in people's Working Life also increasingly highlights.At the same time, the scale of data center is just sent out towards polarising
Exhibition: the scale of large-scale data center is increasing；And the scale of small, miniature data center is then smaller and smaller.In order to meet terminal
The environment and instantaneity demand of business, small, miniature data center even have to build under some extreme environment, such as:
Some office space etc. in open air, the light current well of floor, the business hall of curbside, office building.Currently, in these application scenarios
In, compared with frequently with scheme be configuration sealed dustproof type cabinet system.But since cabinet is closed, when the pressure such as compressor of air conditioner is cold
But when system is out of service for some reason, the heat that the equipment that interior of equipment cabinet is powered by UPS generates will be unable to normally be discharged outside cabinet.For
Such case, currently employed counte-rplan mainly have: on cabinet add emergency ventilation door, on cabinet install additional cabinet door it is urgent
Snap device etc.；But these schemes not only increase the production cost of system, when cabinet external environment temperature is lower, Bu Nengchong
Dividing using border temperature cold source is interior of equipment cabinet cooling, leads to the increase that system energy consumption is meaningless, does not meet national energy conservation and emission reduction policy.
Summary of the invention
For the deficiency for solving current technology, the present invention combination prior art provides a kind of network machine from practical application
The double cold source cooling connector devices of cabinet, make cabinet that outer circulation fresh air refrigerating function not only can be used, but also be able to use by the device
Interior recycle compressor forced cooling function simplifies the design of cabinet, reduces the energy consumption and cost of system.
To achieve the above object, technical scheme is as follows:
A kind of double cold source cooling connector devices of network cabinet, for collectively constituting one relatively with air conditioner, network cabinet
Closed airflow circulating system, including
Return air channel, the return air channel have the return air channel air outlet connecting for the return air inlet for air-conditioner with air conditioner,
Return air inlet for being connected to interior of equipment cabinet；
Air-flow switching channel, the air-flow switching channel have the air-flow switching connecting for the air conditioner air outlet with air conditioner
Channel air inlet, for by the heat extraction mouth outside air-flow discharge system；
Xingfeng capsule channel, the Xingfeng capsule channel have air outlet for being connected to interior of equipment cabinet, for introducing system
Fresh wind port, the internal interface for being connected to air-flow switching channel of system outer gas stream；
Air flow valve changeover module, the air flow valve changeover module are used to control fresh wind port, internal interface, heat extraction mouth and open
It closes；When the fresh wind port, heat extraction mouth are closed, when internal interface is opened, air conditioner and cabinet formation inner air circulation system can be made,
Freezed by air conditioner and realize cabinet heat extraction, when the fresh wind port, heat extraction mouth opening can make outside cabinet when internal interface is closed
Portion's air-flow flows through interior of equipment cabinet and drains into realization cabinet heat extraction outside cabinet again.
The air flow valve changeover module includes Xingfeng capsule valve, air-flow switch valve and valve positioner, by institute
The opening and closing that valve positioner control Xingfeng capsule valve event realizes fresh wind port is stated, by valve positioner control air-flow switching
Valve event, internal interface is closed while heat extraction mouth can be made to open, and internal interface is opened while heat extraction mouth is closed.
The Xingfeng capsule valve, air-flow switch valve are plank frame, and Xingfeng capsule valve is placed in fresh wind port side,
The opening and closing of fresh wind port is realized by its rotary movement, air-flow switch valve is placed between heat extraction mouth and internal interface, to side
Heat extraction mouth can be closed when overturning, it can closed interior interface when to another side to overturn.
The valve positioner is a dragger, which connects Xingfeng capsule valve by traction rope and air-flow switches
Valve when dragger acts, drives Xingfeng capsule valve and the overturning of air-flow switch valve to beat fresh wind port, heat extraction mouth by traction rope
It opens, internal interface closing, when dragger discharges, resets Xingfeng capsule valve and air-flow switch valve by reduction torsion spring, from
And close fresh wind port, heat extraction mouth, internal interface is opened.
Fresh air filter screen is equipped on the outside of the fresh wind port.
The return air channel air outlet, air-flow switching channel air inlet are equipped with sealing ring.
The air-flow switching channel, Xingfeng capsule channel low temperature position use physics insulation.
Beneficial effects of the present invention:
1, the present invention by return air channel, air-flow switching channel, Xingfeng capsule channel form airflow circulating channel, by with
Airflow circulating channel can be recycled inside and be switched between outer circulation, examined by control system by the cooperation of air flow valve changeover module
Environment temperature is surveyed to control airflow circulating channel, when ambient temperature is higher, using when interior circulation, it can be achieved that forcing cooling function
Can, air stream is recycled in internal system, and without filtering, air-flow is then cooled down by A/C evaporator, when ambient temperature is lower or forces
Cooling system stops when refrigeration uses outer circulation for some reason, it can be achieved that fresh air refrigerating function, air stream is by exterior, after filtering
It introduces, is discharged again from internal system after interior of equipment cabinet heat absorption；Therefore can be good at solving small micromodule data center
The problem of air-conditioning heat dissipation, fresh air heat extraction and emergency heat extraction, it is ensured that interior of equipment cabinet electronic equipment will not be damaged because temperature is excessively high,
And switched by reasonable inner-outer circulation, it can reduce meaningless system energy consumption, accomplish energy-saving and emission-reduction.
2, the air flow valve changeover module designed by the present invention, structure is simple, low in cost, and it is stable can be flexible
Switch the opening and closing of corresponding interface；Guarantee that sundries will not be brought into when introducing external air flow by the filter screen of setting, passes through setting
Sealing ring can accomplish effective sealing of interface and air conditioner；It can ensure that air-flow switching is logical by the heat insulation layer of setting
Road, Xingfeng capsule channel outside it is unlikely because low temperature moisture condensation after influence use.
Detailed description of the invention
Attached drawing 1 is principle of the invention structural schematic diagram.
Label shown in attached drawing:
1, return air inlet；2, return air channel；3, first interface sealing ring；3-1: second interface sealing ring；4, air conditioner；4-1,
Return air inlet for air-conditioner；4-2, air conditioner air outlet；5, air-flow switching channel；5-1, air-flow switching channel air inlet；6, internal interface；7,
Xingfeng capsule channel；8, air outlet；9, heat extraction mouth；10, fresh wind port；11, fresh air filter screen；12, air-flow switch valve；12-1,
First valve hinges；12-2, the first reduction torsion spring；13, Xingfeng capsule valve；13-1, the second valve hinges；13-2, second are answered
Position torsional spring；14, valve positioner；14-1, traction rope；14-2, first pulley；14-3, second pulley；14-4, traction rope endpoint
And relaxation adjuster；15, shell；16, first thermal insulation layer；16-1, second thermal insulation layer；16-2, third thermal insulation layer.
Specific embodiment
With reference to the drawings and specific embodiments, the invention will be further described.It should be understood that these embodiments are merely to illustrate
The present invention rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, this field
Technical staff can make various changes or modifications the present invention, and such equivalent forms equally fall within range defined herein.
The present invention using when with air-conditioning, network cabinet collectively constitute the airflow circulating system of a relative closure, air conditioner
Inner blower, control system and the fraction channel of compulsory circulative cooling and new air cooling Personalized air conditioning.It is new air-cooled in order to realize
But function, air stream are introduced after filtering by exterior, are discharged again from internal system after interior of equipment cabinet heat absorption；And in order to
Realize that forced cooling function, air stream are recycled in internal system, without filtering, air-flow is then cooled down by A/C evaporator.
In the specific implementation, the present invention can be placed in the top, lower part or surrounding of network cabinet, and the air-conditioning of air conditioner 4 is returned
Air port 4-1 and air conditioner air outlet 4-2 turn to interior of equipment cabinet, heat extraction mouth 9, fresh wind port 10 towards cabinet outside, it is total with cabinet space
With composition inner air circulation and air-flow external circulating system.
As shown in Figure 1, interface arrangement of the invention includes return air channel 2, air-flow switching channel 5,7 and of Xingfeng capsule channel
Air flow valve changeover module, wherein
Return air channel 2 has the return air channel air outlet 2-1 connecting for the return air inlet for air-conditioner 4-1 with air conditioner 4, this time
Wind channel air outlet 2-1 and return air inlet for air-conditioner 4-1 can closely be connected by first interface sealing ring 3, which also has
Return air inlet 1 for being connected to network cabinet inside,
Air-flow switching channel 5 has the air-flow switching channel air inlet connecting for the air conditioner air outlet 4-2 with air conditioner 4
5-1, air-flow switching channel air inlet 5-1 and air conditioner air outlet 4-2 can closely be connected by second interface sealing ring 3-2, should
Air-flow switching channel 5 also has for by the heat extraction mouth 9 outside air-flow discharge system；
Xingfeng capsule channel 7 has air outlet 8 for being connected to interior of equipment cabinet, for introducing the new of exterior air-flow
Air port 10, the internal interface 6 for being connected to air-flow switching channel 5；Fresh wind port 10 be located at 7 side of Xingfeng capsule channel for
External world's connection, internal interface 6 can be connected to Xingfeng capsule channel 7 and air-flow switching channel 5 when opening；
Air flow valve changeover module is used to control the opening and closing of fresh wind port 10, internal interface 6 and heat extraction mouth 9；And then it is formed
Inner air circulation or air-flow outer circulation.By the control of air flow valve changeover module, when the fresh wind port 10, heat extraction mouth 9 are closed,
When internal interface 6 is opened, system is isolated from the outside, and internal interface 6 penetrates through Xingfeng capsule channel 7 and air-flow switching channel 5, from
And air conditioner 4 and cabinet can be made to form inner air circulation system, at this point, realizing cabinet heat extraction by the refrigeration of air conditioner 4；When described
Fresh wind port 10, heat extraction mouth 9 are opened, and when internal interface 6 is closed, system is connected to external at this time, and internal interface 6 is by Xingfeng capsule
Channel 7 and air-flow switching channel 5 disconnect, and cabinet outer gas stream can be made to flow through interior of equipment cabinet at this time and drain into realization machine outside cabinet again
Cabinet heat extraction.
As shown in the picture, in the present invention, air flow valve changeover module includes Xingfeng capsule valve 13, air-flow switch valve
12 and valve positioner 14, wherein air-flow switch valve 12 and Xingfeng capsule valve 13 are controlled by valve positioner 14,
Fresh air valve 13 is a plate formula structure, for controlling the opening and closing of fresh wind port 10, air-flow switch valve on the inside of fresh wind port 10
12 are similarly a plate formula structure, and air-flow switch valve 12 controls heat extraction mouth 9 and internal interface 6 simultaneously, as shown in the figure, in order to
Internal interface 6 is set incline structure by the control for facilitating internal interface 6, and air-flow switch valve 12 is placed in 6 He of internal interface
Between heat extraction mouth 9, then when air-flow switch valve 12 flips to one side and fits to heat extraction mouth 9, heat extraction mouth 9 is closed and internal
Interface 6 is opened, and when air-flow switch valve 12 fits to internal interface 6 to another side to overturn, heat extraction mouth 9 is opened and internal
6 times of interface closings.
For the ease of being controlled by valve positioner 14 air-flow switch valve 12 and Xingfeng capsule valve 13, valve
Controller 14 uses a dragger, is connected to air-flow switch valve 12 and Xingfeng capsule valve 13 simultaneously by traction rope 14-1,
By corresponding first pulley 14-2 and second pulley 14-3 transition when connection, pass through traction rope endpoint and relaxation adjuster 14-4
Adjust traction rope 14-1 elasticity.Second reduction torsion spring is installed at the second valve hinges 13-1 of Xingfeng capsule valve 13
13-2 is equipped with the first reduction torsion spring 12-2 at the first valve hinges 12-1 of air-flow switch valve 12.With this configuration, when
When dragger acts, traction rope 14-1 is wound, then traction rope 14-1 drives air-flow switch valve 12 internally to overturn at interface 6
Fitting closes internal interface 6, the opening of heat extraction mouth 9, while traction rope 14-1 drives the inside overturning of Xingfeng capsule valve 13 to make newly
It opens in air port 10.When dragger discharges, traction rope 14-1 is relaxed, and at this time under the first reduction torsion spring 12-2 effect, air-flow is cut
Change 12 automatic turning of valve conform at heat extraction mouth 9 by heat extraction mouth 9 closing, internal interface 6 open, similarly, the second reduction torsion spring
13-2 closes fresh wind port 10.
The air-flow entered when in order to guarantee outer circulation is clean gas, and the present invention is equipped with fresh air on the outside of fresh wind port 10 and filters
Net 11, for the impurity in filtered airflow.Meanwhile in order to avoid low temperature dew condensation phenomenon, the present invention is in air-flow switching channel 5, new
Physics insulation is used at the low temperature position of wind control channel 7, component, first thermal insulation layer 16, second as shown in the figure is heat-insulated
Layer 16-1, third thermal insulation layer 16-2.
Concrete operating principle is explained respectively with inside and outside two kinds of circulating working modes and workflow of the invention below:
When control system detects that external temperature is higher according to temperature signal, control respective valves, air conditioner 4 etc. are moved
To make, system is made to carry out interior circulation pattern, the working condition of interior each component of circulation pattern: " air conditioner 4 " operates in refrigeration mode,
" valve positioner 14 " release, " air-flow switch valve 12 " resets under " the first reduction torsion spring 12-2 " twisting force blocks " row
Hot mouth 9 ", " internal interface 6 " is unimpeded, and " Xingfeng capsule valve 13 " resets under " the second reduction torsion spring 13-2 " twisting force to be blocked
" fresh wind port 10 ".
Workflow when interior circulation pattern: " return air inlet for air-conditioner 4-1 " generate negative pressure by the hot-air of interior of equipment cabinet from
" return air inlet 1 ", " return air channel 2 " sucking are sent by " air conditioner air outlet 4-2 " to " air-flow switching channel after " air conditioner 4 " is cooling
5 ", cold airflow passes through " internal interface 6 " entrance " Xingfeng capsule channel 7 ", is sent into inside network cabinet through " air outlet 8 ", thus
Achieve the purpose that equipment cooling in cabinet；" thermal insulation layer 16,16-1,16-2 " ensures that " air-flow switching channel 5 ", " Xingfeng capsule is logical
Reason low temperature does not condense in the outside in road 7 ".
When control system detects that external temperature is lower or air conditioner 4 breaks down according to temperature signal, respective valve is controlled
The movement of door, air conditioner 4 etc. makes system carry out outer circulation mode, the working condition of each component of outer circulation mode: " air conditioner 4 "
Ventilation mode is operated in, " valve positioner 14 " movement, " traction rope 14-1 " is partially involved in " valve positioner 14 " and is shortened,
" air-flow switch valve 12 " is blocked " internal interface 6 " by drawing-in motion, and " heat extraction mouth 9 " is unimpeded, " Xingfeng capsule valve 13 " quilt
Drawing-in motion and open, " fresh wind port 10 " is unimpeded.
The workflow of outer circulation mode: " return air inlet for air-conditioner 4-1 " generate negative pressure by the hot-air of interior of equipment cabinet from " return
Air port 1 ", " return air channel 2 " sucking, " air conditioner 4 " operates in ventilation mode at this time, and thermal current is after " air conditioner 4 " pressurization
It is sent by " air conditioner air outlet 4-2 " to " air-flow switching channel 5 "；And " internal interface 6 " has been blocked by " air-flow switch valve 12 ", pressure
The higher thermal current of power is outside " heat extraction mouth 9 " discharge system；And on the other hand, cabinet is a relative closure when working normally
Space, the negative pressure that " return air inlet for air-conditioner 4-1 " is generated makes interior of equipment cabinet air pressure reduction by " return air channel 2 ", " return air inlet 1 ",
To make " air outlet 8 " that connects with cabinet, " Xingfeng capsule channel 7 " air pressure reduce, the Cryogenic air of exterior is caused to pass through
By " fresh air filter screen 11 ", " fresh wind port 10 ", into " Xingfeng capsule channel 7 ", interior of equipment cabinet is entered by " air outlet 8 ", thus
Achieve the purpose that equipment cooling in cabinet.
Claims (7)
1. the double cold source cooling connector devices of a kind of network cabinet, for collectively constituting an opposite envelope with air conditioner, network cabinet
The airflow circulating system closed, it is characterised in that: including
Return air channel, the return air channel have the return air channel air outlet connecting for the return air inlet for air-conditioner with air conditioner, are used for
The return air inlet being connected to interior of equipment cabinet；
Air-flow switching channel, the air-flow switching channel have the air-flow switching channel connecting for the air conditioner air outlet with air conditioner
Air inlet, for by the heat extraction mouth outside air-flow discharge system；
Xingfeng capsule channel, the Xingfeng capsule channel have air outlet for being connected to interior of equipment cabinet, for introducing outside system
The fresh wind port of portion's air-flow, the internal interface for being connected to air-flow switching channel；
Air flow valve changeover module, the air flow valve changeover module are used to control the opening and closing of fresh wind port, internal interface, heat extraction mouth；
When the fresh wind port, heat extraction mouth are closed, when internal interface is opened, air conditioner and cabinet formation inner air circulation system can be made, led to
It crosses air conditioner refrigeration and realizes cabinet heat extraction, when the fresh wind port, heat extraction mouth opening can make outside cabinet when internal interface is closed
Air-flow flows through interior of equipment cabinet and drains into realization cabinet heat extraction outside cabinet again.
2. the double cold source cooling connector devices of a kind of network cabinet as described in claim 1, it is characterised in that: the air flow valve
Changeover module includes Xingfeng capsule valve, air-flow switch valve and valve positioner, controls fresh air by the valve positioner
The opening and closing of fresh wind port is realized in control valve movement, by valve positioner control air-flow switch valve movement, can make heat extraction mouth
Internal interface is closed while opening, and internal interface is opened while heat extraction mouth is closed.
3. the double cold source cooling connector devices of a kind of network cabinet as claimed in claim 2, it is characterised in that: the Xingfeng capsule
Valve, air-flow switch valve are plank frame, and Xingfeng capsule valve is placed in fresh wind port side, are realized by its rotary movement new
The opening and closing in air port, air-flow switch valve are placed between heat extraction mouth and internal interface, and heat extraction mouth can be closed when flipping to one side, to
It can closed interior interface when another side to overturn.
4. the double cold source cooling connector devices of a kind of network cabinet as described in claim 1, it is characterised in that: the valve control
Device is a dragger, which connects Xingfeng capsule valve and air-flow switch valve by traction rope, when dragger acts, by
Traction rope drives Xingfeng capsule valve and the overturning of air-flow switch valve to open fresh wind port, heat extraction mouth, internal interface closing, traction
When machine discharges, reset Xingfeng capsule valve and air-flow switch valve by reduction torsion spring, so that fresh wind port, heat extraction mouth be sealed
It closes, internal interface is opened.
5. the double cold source cooling connector devices of a kind of network cabinet as described in claim 1, it is characterised in that: outside the fresh wind port
Side is equipped with fresh air filter screen.
6. the double cold source cooling connector devices of a kind of network cabinet as described in claim 1, it is characterised in that: the return air channel
Air outlet, air-flow switching channel air inlet are equipped with sealing ring.
7. the double cold source cooling connector devices of a kind of network cabinet as described in claim 1, it is characterised in that: the air-flow switching
Channel, Xingfeng capsule channel low temperature position use physics insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052670.2A CN109041547A (en) | 2018-09-10 | 2018-09-10 | A kind of double cold source cooling connector devices of network cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811052670.2A CN109041547A (en) | 2018-09-10 | 2018-09-10 | A kind of double cold source cooling connector devices of network cabinet |
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| CN109041547A true CN109041547A (en) | 2018-12-18 |
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| CN201811052670.2A Pending CN109041547A (en) | 2018-09-10 | 2018-09-10 | A kind of double cold source cooling connector devices of network cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110944496A (en) * | 2019-12-18 | 2020-03-31 | 南京吉左网络科技股份有限公司 | Double-cold-source network cabinet heat dissipation equipment without overflow of condensed water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110944496A (en) * | 2019-12-18 | 2020-03-31 | 南京吉左网络科技股份有限公司 | Double-cold-source network cabinet heat dissipation equipment without overflow of condensed water |
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