CN106714531B - Heat dissipation system of server-level cooling heat pipe and control method thereof - Google Patents
Heat dissipation system of server-level cooling heat pipe and control method thereof Download PDFInfo
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- 238000001816 cooling Methods 0.000 title claims abstract description 142
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000010521 absorption reaction Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 230000005484 gravity Effects 0.000 claims abstract description 6
- 238000005057 refrigeration Methods 0.000 claims description 36
- 239000003507 refrigerant Substances 0.000 claims description 5
- 108010001267 Protein Subunits Proteins 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
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- 238000010586 diagram Methods 0.000 description 7
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- 238000001704 evaporation Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
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Classifications
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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
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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
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20836—Thermal management, e.g. server temperature control
Abstract
The invention discloses a server-level cooling heat pipe heat dissipation system and a control method thereof, wherein the system comprises an indoor heat dissipation unit and an outdoor cooling unit; the indoor heat dissipation units comprise indoor heat dissipation modules, and each indoor heat dissipation module comprises 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 outdoor cooling unit comprises a cooling unit; the cooling unit comprises a secondary heat pipe natural cooling heat release end and a secondary heat pipe mechanical refrigerating sub-unit; the heat absorption end of the primary heat pipe is attached to a main heating element in the server case, and the heat absorption end of the secondary heat pipe is attached to the heat absorption end of the primary heat pipe; and after the heat absorbed by the heat absorption end of the second-level heat pipe is cooled into liquid by the cooling unit, the liquid flows back to the heat absorption end of the second-level heat pipe and continues to absorb heat. The invention adopts a server-level cooling mode, the heat absorbed by the primary heat pipe is transferred to the outside for cooling by the secondary heat pipe, and the secondary heat pipe is driven by gravity, does not enter the server by water, is driven by power, and is energy-saving and reliable.
Description
Technical Field
The invention relates to the field of heat dissipation of cabinet servers, in particular to a server-level cooling heat pipe heat dissipation system 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 server-level cooling heat pipe radiating system and a control method thereof, and adopts a server-level cooling mode, wherein heat absorbed by a primary heat pipe is directly transferred to the outside of a room for cooling by a secondary heat pipe, so that heat transfer resistance is reduced, and heat transfer efficiency is improved; the first-stage heat pipe adopts Freon as a heat transfer medium, the pipeline connected with the cooling unit at the heat absorption end of the second-stage heat pipe 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 secondary heat pipe mechanical refrigerating sub-unit adopts Freon refrigerant and air cooling, has no water consumption, and is energy-saving and environment-friendly; when the natural cold source is sufficient, the heat absorption end of the secondary heat pipe is only connected with the natural cooling heat absorption end of the secondary heat pipe; when the natural cold source is insufficient, the heat absorption end of the secondary heat pipe can be connected with the natural cooling heat dissipation end of the secondary heat pipe and the mechanical refrigerating sub-unit of the secondary heat pipe at the same time; when the natural cold source can not be used in a very few cases, the heat absorbing end of the secondary heat pipe is only connected with the mechanical refrigerating sub-unit of the secondary heat pipe; the evaporating temperature of the heat absorbing end of the secondary heat pipe is up to about 40 ℃, and the requirement on the temperature of the cold source is reduced, so that the natural cold source can be utilized to the maximum extent, the mechanical refrigeration is only used as auxiliary supplement, and the annual energy saving effect is good.
The technical scheme adopted by the invention for realizing the technical purpose is as follows:
a server-level cooling heat pipe heat dissipation system comprises an indoor heat dissipation unit, an outdoor cooling unit, a liquid distribution main pipe and a gas collection main pipe, and is characterized in that,
the indoor heat dissipation unit comprises at least one indoor heat dissipation module, each indoor heat dissipation module comprises at least one server cabinet, at least one server and a plurality of heat pipe heat dissipation units, wherein the at least one server and the plurality of heat pipe heat dissipation units are arranged in each server cabinet,
the heat pipe radiating unit comprises a primary heat pipe and a secondary heat pipe heat absorbing end, wherein the heat absorbing end of the primary heat pipe extends into the chassis of the server and is attached to a main heating element in the primary heat pipe, and the heat releasing end of the primary heat pipe is arranged outside the chassis of the server and is attached to the secondary heat pipe heat absorbing end arranged outside the chassis of the server; the secondary heat pipe heat absorption end comprises a secondary heat pipe inlet pipe and a secondary heat pipe outlet pipe, the secondary heat pipe inlet pipe is communicated with the liquid separation main pipe, and the secondary heat pipe outlet pipe is communicated with the gas collection main pipe;
the outdoor cooling unit comprises at least one cooling unit, the cooling unit comprises a secondary heat pipe natural cooling heat release end, a secondary heat pipe mechanical refrigerating sub-unit, a three-way valve I and a three-way valve II, the three-way valve I comprises an inlet, a first outlet and a second outlet, the three-way valve II comprises a first inlet, a second inlet and an outlet, wherein,
the cooling unit is arranged at a position higher than the heat absorption end of the secondary heat pipe;
the inlet of the three-way valve I is communicated with the gas collecting main pipe, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling and heat releasing end of the secondary heat pipe, and the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigerating sub-unit of the secondary heat pipe;
and the outlet of the three-way valve II is communicated with the liquid distribution main pipe, the first inlet of the three-way valve II is communicated with the outlet of the natural cooling and heat releasing end of the secondary heat pipe, and the second inlet of the three-way valve II is communicated with the outlet of the mechanical refrigerating sub-unit of the secondary heat pipe.
Preferably, the gas collecting main pipe comprises an indoor gas collecting main pipe and an outdoor gas collecting main pipe which are communicated with each other, the liquid separating main pipe comprises an indoor liquid separating main pipe and an outdoor liquid separating main pipe which are communicated with each other, the indoor gas collecting main pipe and the indoor liquid separating main pipe are arranged in the indoor heat radiating unit, and the outdoor gas collecting main pipe and the outdoor liquid separating main pipe are arranged in the outdoor cooling unit; each indoor heat dissipation module comprises a gas collecting pipe indoor section and a liquid separating pipe indoor section, a secondary heat pipe inlet pipe in each indoor heat dissipation module is communicated with the liquid separating pipe indoor section through a liquid pipe branch pipe, a secondary heat pipe outlet pipe is communicated with the gas collecting pipe indoor section through a gas pipe branch pipe, each gas collecting pipe indoor section is communicated with the indoor gas collecting main pipe, and each liquid separating pipe indoor section is communicated with the indoor liquid separating main pipe; the inlet of each three-way valve I is communicated with the outdoor gas collecting main pipe, and the outlet of each three-way valve II is communicated with the outdoor liquid separating main pipe.
Preferably, the server comprises at least one primary heating element.
Preferably, the primary heat pipe uses freon as a heat transfer medium.
Preferably, freon is adopted as a heat transfer medium in a pipeline connected with the cooling unit at the heat absorption end of the secondary heat pipe and gravity is used for driving.
Preferably, the secondary heat pipe mechanical refrigeration sub-unit adopts Freon refrigerant and air cooling for cooling.
Preferably, the number of servers corresponds to the number of heat pipe radiating units one by one.
Preferably, the contact end surface between the primary heat pipe heat absorption end and the main heating element of the server and the contact end surface between the primary heat pipe heat absorption end and the secondary heat pipe heat absorption end are coated with heat conducting medium.
Preferably, a valve assembly is arranged at the inlet of each three-way valve I and at the outlet of each three-way valve II; valve components are arranged on the liquid pipe branch pipe between the inlet pipe of each secondary heat pipe and the indoor section of the liquid separating pipe and the air pipe branch pipe between the outlet pipe of each secondary heat pipe and the indoor section of the air collecting pipe.
Preferably, the cooling unit is a cooling unit integrating natural cooling and mechanical refrigeration.
According to another aspect of the present invention, there is also provided a control method of the above-mentioned server-stage cooling heat pipe heat dissipation system, characterized in that the server-stage cooling heat pipe heat dissipation system includes a natural cooling control mode, a mechanical cooling control mode, and a natural cooling and mechanical cooling mixed control mode, in which,
when the natural cold source is sufficient, the heat absorption end of the secondary heat pipe is only connected with the natural cooling heat dissipation end of the secondary heat pipe, and a natural cooling control mode is started, at the moment, the inlet of the three-way valve I is switched to be communicated with the first outlet of the three-way valve I and is disconnected with the second outlet of the three-way valve I, the outlet of the three-way valve II is communicated with the first inlet of the three-way valve II and is disconnected with the second inlet of the three-way valve II, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling heat dissipation end of the secondary heat pipe, and the first inlet of the three-way valve II is communicated with the outlet of the natural cooling heat dissipation end of the secondary heat pipe;
when the natural cold source is insufficient, the heat absorption end of the secondary heat pipe is simultaneously communicated with the natural cooling heat dissipation end of the secondary heat pipe and the mechanical refrigerating sub-unit of the secondary heat pipe, and a natural cooling and mechanical refrigerating mixed control mode is started, at the moment, the inlet of the three-way valve I is simultaneously communicated with the first outlet and the second outlet of the three-way valve II, the outlet of the three-way valve II is simultaneously communicated with the first inlet and the second inlet of the three-way valve I, the first outlet and the second outlet of the three-way valve I are respectively communicated with the inlet of the natural cooling heat dissipation end of the secondary heat pipe and the inlet of the mechanical refrigerating sub-unit of the secondary heat pipe, and the first inlet and the second inlet of the three-way valve II are respectively communicated with the outlet of the natural cooling heat dissipation end of the secondary heat pipe and the outlet of the mechanical refrigerating sub-unit of the secondary heat pipe;
when the natural cold source cannot be used, a mechanical refrigeration control mode is started, the heat absorbing end of the second heat pipe is only connected with the mechanical refrigeration sub-unit of the second heat pipe, at the moment, the inlet of the three-way valve I is switched to be disconnected from the first outlet and is communicated with the second outlet of the three-way valve I, the outlet of the three-way valve II is disconnected from the first inlet and is communicated with the second inlet of the three-way valve II, the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigeration sub-unit of the second heat pipe, and the second inlet of the three-way valve II is communicated with the outlet of the mechanical refrigeration sub-unit of the second heat pipe.
Compared with the prior art, the server-level cooling heat pipe heat dissipation system and the control method thereof adopt a server-level cooling mode, and heat absorbed by the primary heat pipe is directly transferred to the outside of a room for cooling by 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 pipeline connected with the cooling unit at the heat absorption end of the second-stage heat pipe 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 secondary heat pipe mechanical refrigerating sub-unit adopts Freon refrigerant and air cooling, has no water consumption, and is energy-saving and environment-friendly; when the natural cold source is sufficient, the heat absorption end of the secondary heat pipe is only connected with the natural cooling heat absorption end of the secondary heat pipe; when the natural cold source is insufficient, the heat absorption end of the secondary heat pipe can be connected with the natural cooling heat dissipation end of the secondary heat pipe and the mechanical refrigerating sub-unit of the secondary heat pipe at the same time; when the natural cold source can not be used in a very few cases, the heat absorbing end of the secondary heat pipe is only connected with the mechanical refrigerating sub-unit of the secondary heat pipe; the evaporating temperature of the heat absorbing end of the secondary heat pipe is up to about 40 ℃, and the requirement on the temperature of the cold source is reduced, so that the natural cold source can be utilized to the maximum extent, the mechanical refrigeration is only used as auxiliary supplement, and the annual energy saving effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a server-side cooling heat pipe heat dissipation system of the present invention.
Fig. 2 is a schematic structural diagram of the server-stage cooling heat pipe heat dissipation system according to the present invention when only natural cooling is used outdoors.
Fig. 3 is a schematic diagram of the structure of the server-stage cooling heat pipe heat dissipation system of the present invention when natural cooling and mechanical refrigeration are used outdoors.
Fig. 4 is a schematic structural diagram of the server-stage cooling heat pipe heat dissipation system according to the present invention when only mechanical refrigeration is used.
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.
As shown in fig. 1, the server-level cooling heat pipe heat dissipation system of the invention comprises an indoor heat dissipation unit 1, an outdoor cooling unit 2, a liquid distribution main pipe and a gas collection main pipe; the gas collecting main pipe comprises an indoor gas collecting main pipe 4 and an outdoor gas collecting main pipe 14 which are communicated with each other, and the liquid separating main pipe comprises an indoor liquid separating main pipe 5 and an outdoor liquid separating main pipe 15 which are communicated with each other.
The indoor heat radiation unit 1 comprises a plurality of indoor heat radiation modules 3, 1 indoor gas collecting main pipe 4 and 1 indoor liquid separating main pipe 5, wherein each indoor heat radiation module 3 comprises 1 gas collecting pipe indoor section 4-1, 1 liquid separating pipe indoor section 5-1, a plurality of server cabinets 6, a plurality of servers 7 arranged in each server cabinet 6, a plurality of heat pipe heat radiation units 8, a plurality of groups of indoor air pipe branch pipes 9, valve components arranged on the indoor air pipe branch pipes, a plurality of groups of indoor liquid pipe branch pipes 10 and valve components arranged on the indoor liquid separating pipe branch pipes. Preferably, each server 7 comprises at least one main heating element.
The heat pipe radiating unit 8 comprises a primary heat pipe 8-1 and a secondary heat pipe heat absorbing end 8-2, wherein the heat absorbing end of the primary heat pipe 8-1 stretches into the chassis of the server 7 and is tightly attached to a main heating element in the chassis, the heat releasing end of the primary heat pipe 8-1 is arranged outside the chassis of the server 7 and is tightly attached to the secondary heat pipe heat absorbing end 8-2 arranged outside the chassis of the server, and preferably, the contact end surfaces between the primary heat pipe heat absorbing end and the main heating element of the server and the contact end surfaces between the primary heat pipe heat releasing end and the secondary heat pipe heat absorbing end are coated with heat conducting media; the secondary heat pipe heat absorption end 8-2 comprises secondary heat pipe inlet pipes 8-3 and secondary heat pipe outlet pipes 8-4, wherein the secondary heat pipe inlet pipes 8-3 in each indoor heat dissipation module 3 are communicated with the indoor liquid distribution pipe sections 5-1 through liquid pipe branch pipes 10, the secondary heat pipe outlet pipes 8-4 are communicated with the indoor gas collection pipe sections 4-1 through gas pipe branch pipes 9, each indoor gas collection pipe section 4-1 is communicated with the indoor gas collection main pipe 4, and each indoor liquid distribution pipe section 5-1 is communicated with the indoor liquid distribution main pipe 5. The primary heat pipe 8-1 preferably uses freon as a heat transfer medium. The pipeline of the secondary heat pipe heat absorption end 8-2 connected with the cooling unit 11 is preferably driven by adopting Freon as a heat transfer medium and utilizing gravity.
The outdoor cooling unit 2 comprises at least one cooling unit 11 (the cooling unit 11 is preferably a cooling unit integrating natural cooling and mechanical refrigeration), one or more groups of outdoor air pipe branch pipes 12 corresponding to the cooling unit in number, one or more groups of outdoor liquid pipe branch pipes 13, valves arranged on the cooling unit, 1 outdoor gas collecting main 14 and 1 outdoor liquid separating main 15. The cooling unit 11 comprises a secondary heat pipe natural cooling heat release end 11-1, a secondary heat pipe mechanical refrigeration sub-unit 11-2 (the secondary heat pipe mechanical refrigeration sub-unit preferably adopts Freon refrigerant and air cooling), a three-way valve I11-3, a three-way valve II 11-4, a connecting inlet pipe 11-5 and a connecting outlet pipe 11-6. The cooling unit 11 is arranged at a position higher than the heat absorbing end 8-2 of the secondary heat pipe. The three-way valve I11-3 comprises an inlet, a first outlet and a second outlet, and the three-way valve II 11-4 comprises a first inlet, a second inlet and an outlet. The inlet of the three-way valve I11-3 is communicated with the outdoor gas collecting main 14 through an outdoor gas pipe branch pipe 12, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling and heat releasing end 11-1 of the secondary heat pipe, and the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigerating sub-unit 11-2 of the secondary heat pipe; the outlet of the three-way valve II 11-4 is communicated with the outdoor liquid distribution main pipe 15 through an outdoor liquid pipe branch pipe 13, the first inlet of the three-way valve II is communicated with the outlet of the natural cooling and heat release end 11-1 of the secondary heat pipe, and the second inlet of the three-way valve II is communicated with the outlet of the mechanical refrigerating sub-unit 11-2 of the secondary heat pipe.
The server-level cooling heat pipe heat dissipation system comprises a natural cooling control mode, a mechanical refrigeration control mode, a natural cooling and mechanical refrigeration mixed control mode and the like.
Fig. 2 is a schematic structural diagram of the server-stage cooling heat pipe heat dissipation system according to the present invention when only natural cooling is used outdoors. When the natural cold source is sufficient, the outdoor natural cooling is adopted, the heat absorption end 8-2 of the secondary heat pipe is connected with the natural cooling heat release end 11-1 of the secondary heat pipe, and a natural cooling control mode is started, at the moment, the inlet of the three-way valve I is switched to be communicated with the first outlet of the three-way valve I and is disconnected with the second outlet of the three-way valve I, the outlet of the three-way valve II is communicated with the first inlet of the three-way valve II and is disconnected with the second inlet of the three-way valve I, the first outlet of the three-way valve I11-3 is communicated with the natural cooling heat release end 11-1 of the secondary heat pipe through the connecting inlet pipe 11-5, and the first inlet of the three-way valve II 11-4 is communicated with the natural cooling heat release end 11-1 of the secondary heat pipe through the connecting outlet pipe 11-6; the flow direction of the heat transfer medium in the secondary heat pipe heat absorption end 8-2, the secondary heat pipe natural cooling heat release end 11-1, the secondary heat pipe outlet pipe 8-4 communicated with the two, the indoor air pipe branch pipe and the valve 9, the air collecting pipe indoor section 4-1, the indoor air collecting main pipe 4, the outdoor air collecting main pipe 14, the outdoor air pipe branch pipe and the valve 12, the outdoor liquid pipe branch pipe and the valve 13, the outdoor liquid distribution main pipe 15, the liquid distribution pipe indoor section 5-1, the indoor liquid pipe branch pipe and the valve 10 and the secondary heat pipe inlet pipe 8-3 is shown as an arrow A direction in the figure 2.
Fig. 3 is a schematic diagram of the structure of the server-stage cooling heat pipe heat dissipation system of the present invention when natural cooling and mechanical refrigeration are used outdoors. When the natural cold source is insufficient, the heat absorption end 8-2 of the secondary heat pipe can be selectively and simultaneously communicated with the natural cooling heat release end 11-1 of the secondary heat pipe and the mechanical refrigerating sub-unit 11-2 of the secondary heat pipe, and a natural cooling and mechanical refrigerating mixed control mode is started, at the moment, the inlet of the three-way valve I is simultaneously communicated with the first outlet and the second outlet of the three-way valve II, the outlet of the three-way valve II is simultaneously communicated with the first inlet and the second inlet of the three-way valve I11-3, the first outlet and the second outlet of the three-way valve I11-3 are respectively communicated with the natural cooling heat release end 11-1 of the secondary heat pipe and the mechanical refrigerating sub-unit 11-2 of the secondary heat pipe through connecting inlet pipes 11-5, and the first inlet and the second inlet of the three-way valve II 11-4 are respectively communicated with the natural cooling heat release end 11-1 of the secondary heat pipe and the mechanical refrigerating sub-unit 11-2 of the secondary heat pipe through connecting outlet pipes 11-6; at this time, the flow direction of the heat transfer medium in the secondary heat pipe mechanical refrigerating sub-unit 11-2 is shown as the arrow B direction in FIG. 3, and the heat absorption end 8-2 of the secondary heat pipe and the natural cooling heat release end 11-1 of the secondary heat pipe.
Fig. 4 is a schematic structural diagram of the server-stage cooling heat pipe heat dissipation system according to the present invention when only mechanical refrigeration is used. When a few conditions that natural cold sources cannot be used occur, a mechanical refrigeration control mode is started, the heat absorbing end 8-2 of the secondary heat pipe is only connected with the mechanical refrigeration sub-unit 11-2 of the secondary heat pipe, at the moment, the inlet of the three-way valve I is switched to be disconnected from the first outlet of the heat absorbing end and is communicated with the second outlet of the heat absorbing end, the outlet of the three-way valve II is disconnected from the first inlet of the heat absorbing end and is communicated with the second inlet of the heat absorbing end, the second outlet of the three-way valve I11-3 is communicated with the mechanical refrigeration sub-unit 11-2 of the secondary heat pipe through a connecting inlet pipe 11-5, and the second inlet of the three-way valve II 11-4 is communicated with the mechanical refrigeration sub-unit 11-2 of the secondary heat pipe through a connecting outlet pipe 11-6; the evaporating temperature of the heat absorbing end of the secondary heat pipe is up to about 40 ℃, and the requirement on the temperature of the cold source is reduced, so that the natural cold source can be utilized to the maximum extent, and the mechanical refrigeration is only used as auxiliary supplement. At this time, the flow direction of the heat transfer medium in the secondary heat pipe heat absorption end 8-2 and the secondary heat pipe mechanical refrigeration subunit 11-2 is shown as the arrow C direction 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 (8)
1. A server-level cooling heat pipe heat dissipation system comprises an indoor heat dissipation unit, an outdoor cooling unit, a liquid distribution main pipe and a gas collection main pipe, and is characterized in that,
the indoor heat dissipation unit comprises at least one indoor heat dissipation module, each indoor heat dissipation module comprises at least one server cabinet, at least one server arranged in each server cabinet, and a plurality of heat pipe heat dissipation units, wherein at least one main heating element is arranged in the cabinet of each server, each server corresponds to one heat pipe heat dissipation unit,
the heat pipe radiating unit comprises a primary heat pipe and a secondary heat pipe heat absorbing end, wherein the heat absorbing end of the primary heat pipe extends into the chassis of the server and is attached to a main heating element in the primary heat pipe, and the heat releasing end of the primary heat pipe is arranged outside the chassis of the server and is attached to the secondary heat pipe heat absorbing end arranged outside the chassis of the server; the secondary heat pipe heat absorption end comprises a secondary heat pipe inlet pipe and a secondary heat pipe outlet pipe, the secondary heat pipe inlet pipe is communicated with the liquid separation main pipe, and the secondary heat pipe outlet pipe is communicated with the gas collection main pipe;
the outdoor cooling unit comprises at least one cooling unit which is a cooling unit integrating natural cooling and mechanical refrigeration, the cooling unit comprises a secondary heat pipe natural cooling heat release end, a secondary heat pipe mechanical refrigeration sub-unit, a three-way valve I and a three-way valve II, the three-way valve I comprises an inlet, a first outlet and a second outlet, the three-way valve II comprises a first inlet, a second inlet and an outlet, wherein,
the cooling unit is arranged at a position higher than the heat absorption end of the secondary heat pipe;
the inlet of the three-way valve I is communicated with the gas collecting main pipe, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling and heat releasing end of the secondary heat pipe, and the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigerating sub-unit of the secondary heat pipe;
the outlet of the three-way valve II is communicated with the liquid distribution main pipe, the first inlet of the three-way valve II is communicated with the outlet of the natural cooling and heat releasing end of the secondary heat pipe, and the second inlet of the three-way valve II is communicated with the outlet of the mechanical refrigerating sub-unit of the secondary heat pipe;
the server-level cooling heat pipe heat dissipation system 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 cold source is sufficient, the heat absorption end of the secondary heat pipe is only communicated with the natural cooling heat release end of the secondary heat pipe, and a natural cooling control mode is started, at the moment, the inlet of the three-way valve I is switched to be communicated with the first outlet of the three-way valve I and is disconnected with the second outlet of the three-way valve I, the outlet of the three-way valve II is communicated with the first inlet of the three-way valve II and is disconnected with the second inlet of the three-way valve II, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling heat release end of the secondary heat pipe, and the first inlet of the three-way valve II is communicated with the outlet of the natural cooling heat release end of the secondary heat pipe;
when the natural cold source is insufficient, the heat absorption end of the secondary heat pipe is communicated with the natural cooling heat dissipation end of the secondary heat pipe and the mechanical refrigerating sub-unit of the secondary heat pipe at the same time, a natural cooling and mechanical refrigerating mixed control mode is started, at the moment, the inlet of the three-way valve I is communicated with the first outlet and the second outlet of the three-way valve II, the outlet of the three-way valve II is communicated with the first inlet and the second inlet of the three-way valve I, the first outlet and the second outlet of the three-way valve I are respectively communicated with the inlet of the natural cooling heat dissipation end of the secondary heat pipe and the inlet of the mechanical refrigerating sub-unit of the secondary heat pipe, and the first inlet and the second inlet of the three-way valve II are respectively communicated with the outlet of the natural cooling heat dissipation end of the secondary heat pipe and the outlet of the mechanical refrigerating sub-unit of the secondary heat pipe;
when the natural cold source cannot be used, a mechanical refrigeration control mode is started, the heat absorbing end of the secondary heat pipe is only connected with the mechanical refrigeration sub-unit of the secondary heat pipe, at the moment, the inlet of the three-way valve I is switched to be disconnected from the first outlet and is communicated with the second outlet of the three-way valve I, the outlet of the three-way valve II is disconnected from the first inlet and is communicated with the second inlet of the three-way valve II, the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigeration sub-unit of the secondary heat pipe, and the second inlet of the three-way valve II is communicated with the outlet of the mechanical refrigeration sub-unit of the secondary heat pipe.
2. The heat dissipation system according to claim 1, wherein the gas collecting main includes an indoor gas collecting main and an outdoor gas collecting main which are communicated with each other, the liquid-dividing main includes an indoor liquid-dividing main and an outdoor liquid-dividing main which are communicated with each other, the indoor gas collecting main and the indoor liquid-dividing main are provided in the indoor heat dissipation unit, and the outdoor gas collecting main and the outdoor liquid-dividing main are provided in the outdoor cooling unit; each indoor heat dissipation module comprises a gas collecting pipe indoor section and a liquid separating pipe indoor section, a secondary heat pipe inlet pipe in each indoor heat dissipation module is communicated with the liquid separating pipe indoor section through a liquid pipe branch pipe, a secondary heat pipe outlet pipe is communicated with the gas collecting pipe indoor section through a gas pipe branch pipe, each gas collecting pipe indoor section is communicated with the indoor gas collecting main pipe, and each liquid separating pipe indoor section is communicated with the indoor liquid separating main pipe; the inlet of each three-way valve I is communicated with the outdoor gas collecting main pipe, and the outlet of each three-way valve II is communicated with the outdoor liquid separating main pipe.
3. The heat dissipation system of claim 1, wherein the primary heat pipe employs freon as a heat transfer medium.
4. The heat dissipating system of claim 1, wherein the piping connecting the heat absorbing end of the secondary heat pipe to the cooling unit is driven by gravity using freon as a heat transfer medium.
5. The heat dissipation system of claim 1, wherein the secondary heat pipe mechanical refrigeration subunit employs freon refrigerant and air cooling.
6. The heat dissipating system of claim 1, wherein the contact end surfaces between the primary heat pipe heat absorbing end and the primary heating element in the server, and the contact end surfaces between the primary heat pipe heat dissipating end and the secondary heat pipe heat absorbing end are coated with a heat conducting medium.
7. The heat dissipation system according to claim 1, wherein a valve assembly is provided at an inlet of each of the three-way valves i and an outlet of each of the three-way valves ii; valve components are arranged on the liquid pipe branch pipe between the inlet pipe of each secondary heat pipe and the indoor section of the liquid separating pipe and the air pipe branch pipe between the outlet pipe of each secondary heat pipe and the indoor section of the air collecting pipe.
8. A control method of a cooling heat pipe heat dissipation system of server stage according to any one of claims 1 to 7, wherein the cooling heat pipe heat dissipation system of server stage comprises a natural cooling control mode, a mechanical cooling control mode, and a natural cooling and mechanical cooling mixed control mode,
when the natural cold source is sufficient, the heat absorption end of the secondary heat pipe is only connected with the natural cooling heat dissipation end of the secondary heat pipe, and a natural cooling control mode is started, at the moment, the inlet of the three-way valve I is switched to be communicated with the first outlet of the three-way valve I and is disconnected with the second outlet of the three-way valve I, the outlet of the three-way valve II is communicated with the first inlet of the three-way valve II and is disconnected with the second inlet of the three-way valve II, the first outlet of the three-way valve I is communicated with the inlet of the natural cooling heat dissipation end of the secondary heat pipe, and the first inlet of the three-way valve II is communicated with the outlet of the natural cooling heat dissipation end of the secondary heat pipe;
when the natural cold source is insufficient, the heat absorption end of the secondary heat pipe is simultaneously communicated with the natural cooling heat dissipation end of the secondary heat pipe and the mechanical refrigerating sub-unit of the secondary heat pipe, and a natural cooling and mechanical refrigerating mixed control mode is started, at the moment, the inlet of the three-way valve I is simultaneously communicated with the first outlet and the second outlet of the three-way valve II, the outlet of the three-way valve II is simultaneously communicated with the first inlet and the second inlet of the three-way valve I, the first outlet and the second outlet of the three-way valve I are respectively communicated with the inlet of the natural cooling heat dissipation end of the secondary heat pipe and the inlet of the mechanical refrigerating sub-unit of the secondary heat pipe, and the first inlet and the second inlet of the three-way valve II are respectively communicated with the outlet of the natural cooling heat dissipation end of the secondary heat pipe and the outlet of the mechanical refrigerating sub-unit of the secondary heat pipe;
when the natural cold source cannot be used, a mechanical refrigeration control mode is started, the heat absorbing end of the second heat pipe is only connected with the mechanical refrigeration sub-unit of the second heat pipe, at the moment, the inlet of the three-way valve I is switched to be disconnected from the first outlet and is communicated with the second outlet of the three-way valve I, the outlet of the three-way valve II is disconnected from the first inlet and is communicated with the second inlet of the three-way valve II, the second outlet of the three-way valve I is communicated with the inlet of the mechanical refrigeration sub-unit of the second heat pipe, and the second inlet of the three-way valve II is communicated with the outlet of the mechanical refrigeration sub-unit of the second heat pipe.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710152726.0A CN106714531B (en) | 2017-03-15 | 2017-03-15 | Heat dissipation system of server-level cooling heat pipe and control method thereof |
| PCT/CN2017/086124 WO2018166071A1 (en) | 2017-03-15 | 2017-05-26 | Server-class cooling heat pipe heat dissipation system and control method thereof |
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| CN201710152726.0A CN106714531B (en) | 2017-03-15 | 2017-03-15 | Heat dissipation system of server-level cooling heat pipe and control method thereof |
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| CN106714531B true CN106714531B (en) | 2023-11-03 |
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| CN106714531B (en) * | 2017-03-15 | 2023-11-03 | 北京纳源丰科技发展有限公司 | Heat dissipation system of server-level cooling heat pipe and control method thereof |
| CN108124409B (en) * | 2017-12-19 | 2021-03-23 | 漳州科华技术有限责任公司 | Server liquid cooling system |
| CN109945545A (en) * | 2019-04-22 | 2019-06-28 | 四川长虹空调有限公司 | Loop heat pipe type heating and refrigerated air-conditioning system |
| CN112764505B (en) * | 2021-01-25 | 2024-03-26 | 兰洋(宁波)科技有限公司 | Cooling device for immersed type heat dissipation liquid and heat dissipation control method |
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| CN106714531B (en) * | 2017-03-15 | 2023-11-03 | 北京纳源丰科技发展有限公司 | Heat dissipation system of server-level cooling heat pipe and control method thereof |
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- 2017-05-26 WO PCT/CN2017/086124 patent/WO2018166071A1/en active Application Filing
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| WO2018166071A1 (en) | 2018-09-20 |
| CN106714531A (en) | 2017-05-24 |
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