CN106686953B - Liquid cooling heat pipe heat dissipation system for cabinet server and control method thereof - Google Patents
Liquid cooling heat pipe heat dissipation system for cabinet server and control method thereof Download PDFInfo
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- CN106686953B CN106686953B CN201710072097.0A CN201710072097A CN106686953B CN 106686953 B CN106686953 B CN 106686953B CN 201710072097 A CN201710072097 A CN 201710072097A CN 106686953 B CN106686953 B CN 106686953B
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- 238000001816 cooling Methods 0.000 title claims abstract description 153
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 35
- 239000007788 liquid Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000005057 refrigeration Methods 0.000 claims description 40
- 230000005855 radiation Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 1
- 239000002826 coolant Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 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
- H05K7/208—Liquid cooling with phase change
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20336—Heat pipes, e.g. wicks or capillary pumps
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a liquid cooling heat pipe heat dissipation system for a cabinet server and a control method thereof, wherein the liquid cooling heat pipe heat dissipation system comprises an indoor heat dissipation unit, an intermediate heat exchange unit and an outdoor cooling unit; the indoor heat dissipation unit comprises a plurality of indoor heat dissipation modules, wherein each indoor heat dissipation module comprises 1 air pipe header, 1 liquid pipe header, a plurality of server cabinets and a plurality of heat pipe heat dissipation units; the heat pipe radiating unit comprises a primary heat pipe and a secondary heat pipe heat absorbing end; the intermediate heat exchange unit comprises a plurality of intermediate heat exchangers; the outdoor cooling unit comprises at least one cooling module; the heat absorption end of the primary heat pipe extends into the server case and is tightly attached to the main heating element, and the heat emission end is arranged outside the server case and is tightly attached to the heat absorption end of the secondary heat pipe; the heat absorbed by the heat absorbing end of the second-stage heat pipe is transferred to the outdoor cooling unit through the intermediate heat exchanger so as to be discharged out of the server. The invention adopts a server-level cooling mode, reduces heat transfer resistance and improves heat transfer efficiency.
Description
Technical Field
The invention relates to the field of heat dissipation of cabinet servers, in particular to a liquid cooling heat pipe heat dissipation system for a cabinet server and a control method thereof.
Background
In recent years, the number and the scale of data machine rooms on the global scale are rapidly increased, and the energy conservation of the data machine rooms has become an important focus of current energy conservation work. Meanwhile, the integration density of cabinet servers in a machine room is higher and higher, the heat productivity of the servers is higher and higher, and the heat dissipation capacity of a data center cooling system is challenged.
In the existing server cabinet, the heat generated by the CPU accounts for 60% of the heat generated by the whole cabinet, in a common cabinet cooling system, the heat generated by the CPU is firstly discharged into the air and taken away by the air after being mixed, the working temperature of the CPU is generally 60 ℃, the refrigerating air is generally about 20 ℃, and the large temperature difference heat transfer causes relatively large energy waste.
The server-level liquid cooling technology has a remarkable heat dissipation and energy saving effect, and the demand is also increasing. The existing server-level liquid cooling technology mainly adopts the mode that chilled water is supplied by cooling equipment and is conveyed to the inside of a server through a pipeline to directly take away heat of heating elements in the server, and the mode has obvious heat dissipation and energy saving effects, but a water pipe enters the server, so that the potential danger of water leakage exists.
Therefore, a new connection mode between the server and the cooling system is needed to avoid the above problems.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention aims to provide a liquid cooling heat pipe radiating system for a cabinet server and a control method thereof, wherein a server-level cooling mode is adopted, heat emitted by a main heating element of the server is directly absorbed by a primary heat pipe in a fitting way and transferred to a heat absorption end of a secondary heat pipe, and then the heat is discharged outdoors by an intermediate heat exchanger forming a system loop with the heat absorption end of the secondary heat pipe, so that the heat transfer resistance is reduced, and the heat transfer efficiency is improved; the first-stage heat pipe adopts Freon as a heat transfer medium, the system loop formed by the heat absorption end of the second-stage heat pipe and the intermediate heat exchanger adopts Freon as the heat transfer medium and is driven by gravity, and no water enters the server and is driven in a unpowered manner, so that the energy is saved and the reliability is realized; the cooling medium of the intermediate heat exchanger is provided by a natural cooling module or a mechanical refrigerating module, and a natural cold source is preferentially utilized, so that the energy is saved and the environment is protected; the evaporating temperature of the heat absorbing end of the secondary heat pipe is up to about 40 ℃, so that the temperature requirement on a cooling medium is reduced, natural cold sources can be utilized to the maximum extent, and the annual energy saving effect is good.
The technical scheme adopted by the invention for realizing the technical purpose is as follows:
a liquid cooling heat pipe heat radiation system for a cabinet server comprises an indoor heat radiation unit, an intermediate heat exchange unit and an outdoor cooling unit, and is characterized in that,
the indoor heat dissipation unit comprises a plurality of indoor heat dissipation modules, each indoor heat dissipation module comprises an air pipe header, a liquid pipe header, a plurality of server cabinets and a plurality of heat pipe heat dissipation units, wherein,
a plurality of servers are arranged in each server cabinet,
each heat pipe radiating unit comprises a plurality of primary heat pipes and at least one secondary heat pipe heat absorbing end, wherein the heat absorbing ends of the primary heat pipes extend into a chassis of the server and are tightly attached to main heating elements in the heat absorbing ends, and the heat releasing ends of the primary heat pipes are arranged outside the chassis of the server and are tightly attached to the secondary heat pipe heat absorbing ends arranged outside the chassis of the server; each secondary heat pipe heat absorption end comprises 1 secondary heat pipe inlet pipe and 1 secondary heat pipe outlet pipe, each secondary heat pipe inlet pipe is communicated with the liquid pipe collecting pipe, and each secondary heat pipe outlet pipe is communicated with the air pipe collecting pipe; the intermediate heat exchange unit comprises a plurality of intermediate heat exchangers, each intermediate heat exchanger corresponds to an indoor heat dissipation module, an air pipe header pipe in the indoor heat dissipation module is communicated with a hot side inlet of the intermediate heat exchanger, and a liquid pipe header pipe in the indoor heat dissipation module is communicated with a hot side outlet of the intermediate heat exchanger;
the outdoor cooling unit comprises at least one cooling module, an outdoor return pipe main pipe and an outdoor outlet pipe main pipe, and the cold side of each intermediate heat exchanger and the cooling module form a circulation loop through the outdoor return pipe main pipe and the outdoor outlet pipe main pipe.
Preferably, the cooling module in the outdoor cooling unit comprises a natural cooling module and a mechanical refrigerating module, the tail end of the outdoor return pipe main pipe is provided with a three-way valve I, the inlet of the three-way valve I is communicated with the outdoor return pipe main pipe, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling module, and the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigerating module; the outlet of the natural cooling module is provided with a three-way valve II, the inlet of the three-way valve II is communicated with the outlet of the natural cooling module, the first outlet of the three-way valve II is communicated with the inlet of the mechanical cooling module, and the second outlet of the three-way valve II is communicated with the outdoor outlet pipe main pipe.
Preferably, the cold side outlet of each intermediate heat exchanger is communicated with the outdoor return pipe main pipe through an outdoor outlet pipe branch pipe, and the cold side inlet of each intermediate heat exchanger is communicated with the outdoor outlet pipe main pipe through an outdoor outlet pipe branch pipe.
Preferably, each secondary heat pipe inlet pipe is respectively communicated with the liquid pipe header through a liquid pipe branch pipe, and each secondary heat pipe outlet pipe is respectively communicated with the air pipe header through an air pipe branch pipe; and valve components are arranged on each liquid pipe branch pipe and each air pipe branch pipe.
Preferably, each of the servers includes at least one primary heating element.
Preferably, the number of the servers corresponds to the number of the heat pipe radiating units one by one.
Preferably, the contact end surface between the heat absorbing end of the primary heat pipe and the main heating element of the server, and the contact end surface between the heat releasing end of the primary heat pipe and the heat absorbing end of the secondary heat pipe are coated with heat conducting medium.
Preferably, the intermediate heat exchanger is arranged at a position higher than the heat absorption end of the secondary heat pipe, and the heat transfer medium in a pipeline connected with the heat absorption end of the secondary heat pipe and the intermediate heat exchanger is driven by gravity.
According to another aspect of the present invention, the present invention further provides a control method of the above liquid-cooled heat pipe cooling system for a rack server, wherein the liquid-cooled heat pipe cooling system for a rack server includes a natural cooling control mode, a mechanical cooling control mode, and a natural cooling and mechanical cooling mixed control mode,
when the natural cooling module can completely cool the cooling working medium to the required temperature, starting a natural cooling control mode, wherein at the moment, the inlet of the three-way valve I is communicated with the first outlet and disconnected with the second outlet, the inlet of the three-way valve II is disconnected with the first outlet and communicated with the second outlet, and the second outlet of the three-way valve II is communicated with the outdoor outlet pipe main pipe, starting the natural cooling module, and closing the mechanical refrigeration module, so that the cooling process is finished only by means of the natural cooling module;
when the natural cooling module only pre-cools the cooling working medium, a natural cooling and mechanical refrigeration mixed control mode is started, at the moment, the inlet of the three-way valve I is communicated with the first outlet and disconnected with the second outlet, the inlet of the three-way valve II is communicated with the first outlet and disconnected with the second outlet, the first outlet of the three-way valve II is communicated with the inlet of the mechanical refrigeration module, the cooling working medium is pre-cooled through the natural cooling module, and then further cooled to the required temperature through the mechanical refrigeration module, and then flows into the outdoor outlet pipe main pipe through the outlet of the mechanical refrigeration module, so that the cooling process is completed;
and when the natural cooling module does not have a cooling condition, starting a mechanical refrigeration mixing control mode, wherein the inlet of the three-way valve I is disconnected from the first outlet and is communicated with the second outlet of the three-way valve I, the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigeration module, and the cooling working medium is cooled by using the mechanical refrigeration module only.
Compared with the prior art, the liquid cooling heat pipe heat dissipation system for the cabinet server and the control method thereof adopt a server-level cooling mode, heat emitted by a main heating element of the server is directly absorbed by the first-level heat pipe in a fitting way and transferred to the heat absorption end of the second-level heat pipe, and then the heat is discharged outdoors by an intermediate heat exchanger forming a system loop with the heat absorption end of the second-level heat pipe, so that the heat transfer efficiency is improved while the heat transfer resistance is reduced; the first-stage heat pipe adopts Freon as a heat transfer medium, the system loop formed by the heat absorption end of the second-stage heat pipe and the intermediate heat exchanger adopts Freon as the heat transfer medium and is driven by gravity, and no water enters the server and is driven in a unpowered manner, so that the energy is saved and the reliability is realized; the cooling medium of the intermediate heat exchanger is provided by a natural cooling module or a mechanical refrigerating module, and a natural cold source is preferentially utilized, so that the energy is saved and the environment is protected; the evaporating temperature of the heat absorbing end of the secondary heat pipe is up to about 40 ℃, so that the temperature requirement on a cooling medium is reduced, natural cold sources can be utilized to the maximum extent, and the annual energy saving effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a liquid-cooled heat pipe cooling system for a rack server according to the present invention.
Fig. 2 is a schematic structural diagram of a cooling source of the liquid cooling heat pipe cooling system for a cabinet server according to the present invention provided by a natural cooling module.
Fig. 3 is a schematic structural diagram of a cooling source of the liquid cooling heat pipe cooling system for a cabinet server provided by the invention, which is pre-cooled by a natural cooling module and then completely cooled by a mechanical refrigerating module.
Fig. 4 is a schematic structural diagram of a cold source of the liquid cooling heat pipe cooling system for a cabinet server provided by the invention only through a mechanical refrigeration module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below by referring to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of a liquid-cooled heat pipe cooling system for a rack server according to the present invention. The invention relates to a liquid cooling heat pipe radiating system for a cabinet server, which comprises an indoor radiating unit 1, an intermediate heat exchange unit 3 and an outdoor cooling unit 2; the indoor heat radiation unit 1 comprises a plurality of indoor heat radiation modules 4, wherein each indoor heat radiation module 4 comprises 1 air pipe header 5, 1 liquid pipe header 6, a plurality of server cabinets 7, a plurality of servers 8 arranged in each server cabinet 7, a plurality of heat pipe heat radiation units 9, a plurality of groups of air pipe branch pipes and valves 11 and a plurality of groups of liquid pipe branch pipes and valves 10; the heat pipe radiating unit 9 comprises a primary heat pipe 9-1, a secondary heat pipe heat absorbing end 9-2, a secondary heat pipe inlet pipe 9-4 and a secondary heat pipe outlet pipe 9-3; the intermediate heat exchange unit 3 comprises a plurality of intermediate heat exchangers 12; the outdoor cooling unit 2 comprises a natural cooling module 13, a mechanical refrigeration module 14, a three-way valve I15, a three-way valve II 16, an outdoor return pipe main pipe 17, an outdoor outlet pipe main pipe 18, a refrigeration return pipe I19 communicated with an inlet of the natural cooling module 13 and a first outlet of the three-way valve I15, a refrigeration return pipe I20 communicated with an outlet of the natural cooling module 13 and a first inlet of the three-way valve II 16, a refrigeration return pipe II 21 communicated with an inlet of the mechanical refrigeration module 14 and a second outlet of the three-way valve I15, a refrigeration intermediate pipeline 22 communicated with a first outlet of the three-way valve II 16 and an inlet of the mechanical refrigeration module 14, a refrigeration outlet pipe II 23 communicated with a second outlet of the three-way valve II 16 and an outdoor outlet pipe main pipe 18, a refrigeration outlet pipe III 24 communicated with an outlet of the mechanical refrigeration module 14 and an outdoor outlet pipe main pipe 18, an outdoor return pipe branch pipe 25 and an outdoor outlet pipe branch pipe 26; the indoor heat radiation module 4 is communicated with the intermediate heat exchanger 12 through an air pipe header 5 and a liquid pipe header 6; the intermediate heat exchanger 12 is communicated with the outdoor cooling unit 2 through an outdoor outlet pipe branch pipe 26 and an outdoor return pipe branch pipe 25; the heat absorption end of the primary heat pipe 9-1 extends into the chassis of the server 8 and is tightly attached to the main heating element, and the heat release end is arranged outside the chassis of the server 8 and is tightly attached to the heat absorption end 9-2 of the secondary heat pipe arranged outside the chassis of the server 8; the heat absorbed by the heat absorbing end 9-2 of the secondary heat pipe is transferred to the outdoor cooling unit 2 through the intermediate heat exchanger 12 to be discharged out of the server 8.
Fig. 2 is a schematic structural diagram of a cooling source of the liquid cooling heat pipe cooling system for a cabinet server according to the present invention provided by a natural cooling module. The cooling working medium in the outdoor return pipe main pipe 17 is cooled naturally preferentially, and at the moment, the first outlet of the three-way valve I15 is communicated with the inlet of the natural cooling module 13 through the refrigeration return pipe I19; when the natural cooling module 13 can completely cool the cooling working medium to the required temperature, the second outlet of the three-way valve II 16 is communicated with the outdoor outlet pipe main pipe 18 through the refrigeration outlet pipe II 23, so that the cooling process is completed, and a cold source required by the system is provided. The flow directions of the cooling medium in the intermediate heat exchanger 12 and the outdoor cooling unit 2 are shown in the arrow A direction in FIG. 2; the flow of the refrigerant in the indoor heat radiation module 4 and the intermediate heat exchanger 12 is shown by an arrow D in fig. 2.
Fig. 3 is a schematic structural diagram of a cooling source of the liquid cooling heat pipe cooling system for a cabinet server provided by the invention, which is pre-cooled by a natural cooling module and then completely cooled by a mechanical refrigerating module. The cooling working medium in the outdoor return pipe main pipe 17 is cooled naturally preferentially, and at the moment, the first outlet of the three-way valve I15 is communicated with the inlet of the natural cooling module 13 through the refrigeration return pipe I19; when the natural cooling module 13 can only pre-cool the cooling medium, the first outlet of the three-way valve II 16 is communicated with the inlet of the mechanical cooling module 14 through the refrigerating intermediate pipeline 22, the cooling medium is further cooled to the required temperature through the mechanical cooling module 14, and then flows into the outdoor outlet pipe main pipe 18 from the outlet of the mechanical cooling module 14 through the refrigerating outlet pipe III 24, so that the cooling process is completed, and a cold source required by the system is provided. The flow direction of the cooling medium in the intermediate heat exchanger 12 and the outdoor cooling unit 2 is shown as an arrow B direction in FIG. 3; the flow of the refrigerant in the indoor heat radiation module 4 and the intermediate heat exchanger 12 is shown by an arrow D in fig. 3.
Fig. 4 is a schematic structural diagram of a cold source of the liquid cooling heat pipe cooling system for a cabinet server provided by the invention only through a mechanical refrigeration module. When the natural cooling module 13 does not have cooling conditions, the second outlet of the three-way valve I15 is communicated with the inlet of the mechanical cooling module 14 through the cooling return pipe II 21, and the cooling working medium is cooled by the mechanical cooling module 14 only. The flow direction of the cooling working medium of the intermediate heat exchanger 12 and the outdoor cooling unit 2 is shown as an arrow C direction in fig. 4; the flow of the refrigerant in the indoor heat radiation module 4 and the intermediate heat exchanger 12 is shown by an arrow D in fig. 4.
The particular embodiments described in this invention may vary as to the parts, the shape of the parts, the names chosen, etc. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions in a similar manner without departing from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. A liquid cooling heat pipe heat radiation system for a cabinet server comprises an indoor heat radiation unit, an intermediate heat exchange unit and an outdoor cooling unit, and is characterized in that,
the indoor heat dissipation unit comprises a plurality of indoor heat dissipation modules, each indoor heat dissipation module comprises an air pipe header, a liquid pipe header, a plurality of server cabinets and a plurality of heat pipe heat dissipation units, wherein,
a plurality of servers are arranged in each server cabinet,
each heat pipe radiating unit comprises a plurality of primary heat pipes and at least one secondary heat pipe heat absorbing end, wherein the heat absorbing ends of the primary heat pipes extend into a chassis of the server and are tightly attached to main heating elements in the heat absorbing ends, and the heat releasing ends of the primary heat pipes are arranged outside the chassis of the server and are tightly attached to the secondary heat pipe heat absorbing ends arranged outside the chassis of the server; each secondary heat pipe heat absorption end comprises 1 secondary heat pipe inlet pipe and 1 secondary heat pipe outlet pipe, each secondary heat pipe inlet pipe is communicated with the liquid pipe collecting pipe, and each secondary heat pipe outlet pipe is communicated with the air pipe collecting pipe;
the intermediate heat exchange unit comprises a plurality of intermediate heat exchangers, each intermediate heat exchanger corresponds to an indoor heat dissipation module, an air pipe header pipe in the indoor heat dissipation module is communicated with a hot side inlet of the intermediate heat exchanger, and a liquid pipe header pipe in the indoor heat dissipation module is communicated with a hot side outlet of the intermediate heat exchanger;
the outdoor cooling unit comprises a natural cooling module, a mechanical refrigerating module, an outdoor return pipe main pipe and an outdoor outlet pipe main pipe, wherein the tail end of the outdoor return pipe main pipe is provided with a three-way valve I, the inlet of the three-way valve I is communicated with the outdoor return pipe main pipe, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling module, and the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigerating module; the outlet of the natural cooling module is provided with a three-way valve II, the inlet of the three-way valve II is communicated with the outlet of the natural cooling module, the first outlet of the three-way valve II is communicated with the inlet of the mechanical refrigerating module, and the second outlet of the three-way valve II is communicated with the outdoor outlet pipe main pipe;
the cold side outlet of each intermediate heat exchanger is communicated with the outdoor return pipe main pipe through an outdoor outlet pipe branch pipe, and the cold side inlet of each intermediate heat exchanger is communicated with the outdoor return pipe main pipe through an outdoor outlet pipe branch pipe;
the liquid cooling heat pipe radiating system for the cabinet server comprises a natural cooling control mode, a mechanical refrigeration control mode and a natural cooling and mechanical refrigeration mixed control mode, wherein,
when the natural cooling module can completely cool the cooling working medium to a required temperature, a natural cooling control mode is started, at the moment, the inlet of the three-way valve I is communicated with the first outlet and disconnected with the second outlet, the inlet of the three-way valve II is disconnected with the first outlet and communicated with the second outlet, the second outlet of the three-way valve II is communicated with the outdoor outlet pipe main pipe, the natural cooling module is started, and the mechanical refrigerating module is closed, so that the cooling process is completed only by means of the natural cooling module;
when the natural cooling module can only pre-cool cooling working media, a natural cooling and mechanical refrigeration mixed control mode is started, at the moment, the inlet of the three-way valve I is communicated with the first outlet and disconnected with the second outlet, the inlet of the three-way valve II is communicated with the first outlet and disconnected with the second outlet, the first outlet of the three-way valve II is communicated with the inlet of the mechanical refrigeration module, the cooling working media are pre-cooled through the natural cooling module, and then further cooled to a required temperature through the mechanical refrigeration module, and then flow into the outdoor outlet pipe main pipe through the outlet of the mechanical refrigeration module, so that the cooling process is completed;
when the natural cooling module does not have cooling conditions, a mechanical refrigeration mixed control mode is started, at the moment, the inlet of the three-way valve I is disconnected from the first outlet of the three-way valve I and is communicated with the second outlet of the three-way valve I, the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigeration module, and the cooling working medium is cooled by the mechanical refrigeration module.
2. The heat dissipation system of claim 1, wherein each of said secondary heat pipe inlet pipes is in communication with said liquid pipe header via a liquid pipe branch pipe, and each of said secondary heat pipe outlet pipes is in communication with said gas pipe header via a gas pipe branch pipe; and valve components are arranged on each liquid pipe branch pipe and each air pipe branch pipe.
3. The heat dissipation system of claim 1, wherein each of the servers includes at least one primary heat generating element.
4. The heat dissipation system of claim 1, wherein the number of servers corresponds to the number of heat pipe heat dissipation units one to one.
5. The heat dissipating system of claim 1 wherein the contact end surfaces between the heat absorbing end of the primary heat pipe and the primary heating element of the server and the contact end surfaces between the heat releasing end of the primary heat pipe and the heat absorbing end of the secondary heat pipe are coated with a heat conducting medium.
6. The heat dissipation system of claim 1, wherein the primary heat pipe employs freon as a heat transfer medium.
7. The heat dissipating system of claim 1, wherein the intermediate heat exchanger is disposed at a position higher than the heat absorbing end of the secondary heat pipe, and wherein the heat absorbing end of the secondary heat pipe is driven by gravity using freon as a heat transfer medium in a pipeline connected to the intermediate heat exchanger.
8. The heat dissipation system of claim 1, wherein the working fluid in the intermediate heat exchanger and the outdoor cooling unit is any one of water, R22, R134a, R407C, or R410A.
9. The method according to any one of claims 1 to 8, wherein the liquid-cooled heat pipe cooling system for a rack server includes a natural cooling control mode, a mechanical cooling control mode, and a mixed natural cooling and mechanical cooling control mode,
when the natural cooling module can completely cool the cooling working medium to the required temperature, starting a natural cooling control mode, wherein at the moment, the inlet of the three-way valve I is communicated with the first outlet and disconnected with the second outlet, the inlet of the three-way valve II is disconnected with the first outlet and communicated with the second outlet, and the second outlet of the three-way valve II is communicated with the outdoor outlet pipe main pipe, starting the natural cooling module, and closing the mechanical refrigeration module, so that the cooling process is finished only by means of the natural cooling module;
when the natural cooling module only pre-cools the cooling working medium, a natural cooling and mechanical refrigeration mixed control mode is started, at the moment, the inlet of the three-way valve I is communicated with the first outlet and disconnected with the second outlet, the inlet of the three-way valve II is communicated with the first outlet and disconnected with the second outlet, the first outlet of the three-way valve II is communicated with the inlet of the mechanical refrigeration module, the cooling working medium is pre-cooled through the natural cooling module, and then further cooled to the required temperature through the mechanical refrigeration module, and then flows into the outdoor outlet pipe main pipe through the outlet of the mechanical refrigeration module, so that the cooling process is completed;
and when the natural cooling module does not have a cooling condition, starting a mechanical refrigeration mixing control mode, wherein the inlet of the three-way valve I is disconnected from the first outlet and is communicated with the second outlet of the three-way valve I, the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigeration module, and the cooling working medium is cooled by using the mechanical refrigeration module only.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072097.0A CN106686953B (en) | 2017-02-10 | 2017-02-10 | Liquid cooling heat pipe heat dissipation system for cabinet server and control method thereof |
| PCT/CN2017/084532 WO2018145366A1 (en) | 2017-02-10 | 2017-05-16 | Liquid-cooling heat pipe radiator system for cabinet server and control method therefor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710072097.0A CN106686953B (en) | 2017-02-10 | 2017-02-10 | Liquid cooling heat pipe heat dissipation system for cabinet server and control method thereof |
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| CN106686953A CN106686953A (en) | 2017-05-17 |
| CN106686953B true CN106686953B (en) | 2023-10-13 |
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| WO (1) | WO2018145366A1 (en) |
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| CN106686953A (en) | 2017-05-17 |
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