CN102472597A - Loop heat pipe and startup method for the same - Google Patents
Loop heat pipe and startup method for the same Download PDFInfo
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- CN102472597A CN102472597A CN2010800314070A CN201080031407A CN102472597A CN 102472597 A CN102472597 A CN 102472597A CN 2010800314070 A CN2010800314070 A CN 2010800314070A CN 201080031407 A CN201080031407 A CN 201080031407A CN 102472597 A CN102472597 A CN 102472597A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/42—Fillings or auxiliary members in containers or encapsulations selected or arranged to facilitate heating or cooling
- H01L23/427—Cooling by change of state, e.g. use of heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/06—Control arrangements therefor
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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
- H05K7/20809—Liquid cooling with phase change within server blades for removing heat from heat source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/06—Derivation channels, e.g. bypass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The disclosed loop heat pump 10 is provided with a first evaporator 11A and a second evaporator 11B that receive heat from a heating element and evaporate liquid-phase working fluid 16 causing a phase change into vapor-phase working fluid 16; a first condenser 12A and a second condenser 12B, that condense vapor-phase working fluid 16 by means of heat radiation, causing a phase change to liquid-phase working fluid 16; a first vapor tube 13A, which shunts working fluid 16 changed to the vapor phase by the first evaporator 11A to the first condenser 12A; a first liquid tube 14A, which shunts working fluid 16 changed to the liquid phase by the first condenser 12A to the second evaporator 11B; a second vapor tube 13B, which shunts working fluid 16 changed to the vapor phase by the second evaporator 11B to the second condenser 12B; and a second liquid tube 14B, which shunts working fluid 16 changed to the liquid phase by the second condenser 12B to the first evaporator 11A.
Description
Technical field
The present invention relates to ring-like heat pipe and starting method thereof.
Background technology
In the past, when cooling electronic device, used heat pipe.Heat pipe is to utilize the phase transformation that is enclosed in inner working fluid to carry the heat transfer unit (HTU) of heat.
And, develop ring-like heat pipe as the heat pipe that increases heated conveying capacity for the cooling capacity that improves electronic installation and increase heated fed distance.
Ring-like heat pipe has: the evaporation part, receive heat from heater, and make the working fluid evaporation of liquid phase; The condensation part makes the working fluid condensation of gas phase through heat radiation.In addition, ring-like heat pipe has: steam pipe makes the working fluid that is changed to gas phase through the evaporation part flow to the condensation part; The liquid pipe makes the working fluid that is changed to liquid phase through the condensation part flow to the evaporation part.And ring-like heat pipe is the loop configuration that evaporation part, steam pipe, condensation part and liquid pipe are connected in series, and enclosing in inside has working fluid.
But, in blade server (blade server) in recent years,, developed the structure that two CPU are installed on a blade in order to improve disposal ability.
In order to use ring-like heat pipe that two CPU in the running are cooled off, need two evaporation parts to accept heat from each CPU respectively, thereby need on blade server, assemble two ring-like heat pipes.
For two groups of ring-like heat pipes of assembling on blade server, substrate need have the zone that is used to dispose two groups of ring-like heat pipes.
But blade server is developed as the littler server of volumetric ratio server in the past originally, is used on substrate, disposing to high-density electronic installations such as CPU.
Therefore, be difficult on substrate, guarantee to dispose the zone of 2 groups of ring-like heat pipes sometimes.
In addition, proposed to have the ring-like heat pipe of two evaporation parts.Fig. 1 shows this ring-like heat pipe 110.
Ring-like heat pipe 110 has the first evaporation part 111A and condensation part 112.In addition, ring-like heat pipe 110 has: the first liquid pipe 114A makes the working fluid that is changed to liquid phase through condensation part 112 flow to the first evaporation part 111A; Steam pipe 113 makes the working fluid that is changed to gas phase through the first evaporation part 111A flow to condensation part 112.
In addition, as shown in Figure 1, ring-like heat pipe 110 has the second evaporation part 111B, and this second evaporation part 111B when starting, assists the action that the working fluid that makes liquid phase flow in the first evaporation part 111A.The part of working fluid that flow to the liquid phase of the first liquid pipe 114A flow to the second evaporation part 111B via the second liquid pipe 114B and condensation part 112.The working fluid that is changed to gas phase through the second evaporation part 111B is being flowed to steam pipe 113, flows to condensation part 112.In the second liquid pipe 114B flowing process fluid not with the first liquid pipe 114 in flowing process fluid conflux, and flow to the second evaporation part 111B through condensation part 112.
When ring-like heat pipe 110 starts, supply with the working fluid of liquid phase to being configured near the condensation part 112 second evaporation part 111B at once, and make the working fluid in the loop begin to flow, thereby make the working fluid of liquid phase flow to the first evaporation part 111A.The second evaporation part 111B is the assisted evaporative portion that is provided with in order to start ring-like heat pipe 110.Therefore, the second evaporation part 111B compares with the first evaporation part 111A, and size is little, and cooling capacity is low.
When so ring-like heat pipe 110 with two evaporation part 111A, 111B is cooled off two CPU with equal caloric value respectively; Because the cooling capacity of two evaporation part 111A, 111B is different and because the structure of pipe arrangement, so make the mobile instability that becomes of the working fluid the loop in easily.
The prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2008-8512 communique;
Patent documentation 2: U.S. Patent application discloses specification No. 2004/0182550.
Summary of the invention
The problem that invention will solve
The purpose of this specification is to provide size little and can cool off the ring-like heat pipe of two heaters.
The means that are used to deal with problems
In order to address the above problem,, have according to a mode of disclosed ring-like heat pipe in this manual: first evaporation part and second evaporation part, receive heat from heater, make the working fluid evaporation of liquid phase and become the working fluid of gas phase mutually; First condensation part and second condensation part make the working fluid condensation of gas phase through heat radiation and become the working fluid of liquid phase mutually; First steam pipe makes the working fluid that is changed to gas phase through said first evaporation part flow to said first condensation part; The first liquid pipe makes the working fluid that is changed to liquid phase through said first condensation part flow to said second evaporation part; Second steam pipe makes the working fluid that is changed to gas phase through said second evaporation part flow to said second condensation part; The second liquid pipe makes the working fluid that is changed to liquid phase through said second condensation part flow to said first evaporation part.
The effect of invention
A mode according to the disclosed ring-like heat pipe of this above-mentioned specification can reduce size, and can cool off two heaters.
Especially the object of the invention and effect can understood and obtain to member of formation and the combination pointed out through claim.
Above-mentioned by and large bright and after the detailed explanation stated be exemplary and illustrative explanation, the present invention who requires to protect is not limited.
Description of drawings
Fig. 1 is the figure of the ring-like heat pipe of the relevant example of expression.
Fig. 2 is the figure of first embodiment of the disclosed ring-like heat pipe of this specification of expression.
Fig. 3 is the figure of blade server that expression is assembled with the ring-like heat pipe of Fig. 2.
Fig. 4 is the cutaway view Amplified image of length direction of evaporation part of the ring-like heat pipe of Fig. 2.
Fig. 5 is the cutaway view Amplified image of width of evaporation part of the ring-like heat pipe of Fig. 2.
(A)～(D) of Fig. 6 is the figure of action of the ring-like heat pipe of key diagram 2.
Fig. 7 is the figure of explanation at the unbalanced state of ring-like heat pipe received heat of Fig. 2.
Fig. 8 is the figure of second embodiment of the disclosed ring-like heat pipe of this specification of expression.
(A)～(D) of Fig. 9 is the figure of action of the ring-like heat pipe of key diagram 8.
Figure 10 is the figure of the 3rd embodiment of the disclosed ring-like heat pipe of this specification of expression.
Figure 11 is the figure of blade server that expression is assembled with the 4th embodiment of the disclosed ring-like heat pipe of this specification.
Figure 12 is the figure of the embodiment 1～14 of the disclosed ring-like heat pipe of this specification of explanation.
Figure 13 is the figure of the embodiment 15 of the disclosed ring-like heat pipe of this specification of explanation.
Figure 14 is the figure of the embodiment 16 of the disclosed ring-like heat pipe of this specification of explanation.
Figure 15 is the figure of the embodiment 17 of the disclosed ring-like heat pipe of this specification of explanation.
Figure 16 is the figure of the embodiment 18 of the disclosed ring-like heat pipe of this specification of explanation.
The specific embodiment
Below, with reference to preferred first embodiment of the disclosed ring-like heat pipe of this specification of description of drawings.But technical scope of the present invention is not limited to following embodiment, and will note the invention that claims are put down in writing and the scope of equivalent with it.
Fig. 2 is the figure of first embodiment of the disclosed ring-like heat pipe of this specification of expression.Fig. 3 is the figure of blade server that expression is assembled with the ring-like heat pipe of Fig. 2.Fig. 4 is the cutaway view Amplified image of length direction of evaporation part of the ring-like heat pipe of Fig. 2.Fig. 5 is the cutaway view Amplified image of width of evaporation part of the ring-like heat pipe of Fig. 2.
As shown in Figure 2; The ring-like heat pipe 10 of this embodiment has the first evaporation part 11A and the second evaporation part 11B; This first evaporation part 11A and the second evaporation part 11B receive the heat from heater, make working fluid 16 evaporation of liquid phase and become the working fluid 16 of gas phase mutually.In addition, ring-like heat pipe 10 has the first condensation part 12A and the second condensation part 12B, and this first condensation part 12A and the second condensation part 12B make working fluid 16 condensations of gas phase through heat radiation, and becomes the working fluid 16 of liquid phase mutually.In addition, ring-like heat pipe 10 has: the first steam pipe 13A makes the working fluid 16 that is changed to gas phase through the first evaporation part 11A flow to the first condensation part 12A; The first liquid pipe 14A makes the working fluid 16 that is changed to liquid phase through the first condensation part 12A flow to the second evaporation part 11B.And ring-like heat pipe 10 has: the second steam pipe 13B makes the working fluid 16 that is changed to gas phase through the second evaporation part 11B flow to the second condensation part 12B; The second liquid pipe 14B makes the working fluid 16 that is changed to liquid phase through the second condensation part 12B flow to the first evaporation part 11A.
In ring-like heat pipe 10, the first evaporation part 11A, the first steam pipe 13A, the first condensation part 12A, the first liquid pipe 14A, the second evaporation part 11B, the second steam pipe 13B, the second condensation part 12B and the second liquid pipe 14B are connected in series and form the stream of loop shape.
Working fluid is sealed in the stream of above-mentioned loop shape.Working fluid 16 in ring-like heat pipe 10, on one side between liquid phase and gas phase, carry out phase transformation, shift heat on one side.Working fluid 16 is enclosed in the ring-like heat pipe 10 with saturated vapour pressure.
Working fluid 16 for example can make water, ethanol, ammoniacal liquor or CFC etc.
As shown in Figure 3, ring-like heat pipe 10 for example is assembled on the blade server 20 and uses.
As shown in Figure 3, blade server 20 has long rectangular shape mostly.Blade server 20 is configured to consistent with vertical width and the vertical of its length direction usually.Typically, CPU21A is configured in the upside of CPU21B on vertical.
Thereby, in ring-like heat pipe 10, receive the first evaporation part 11A from the heat of CPU21A and on vertical, be configured in the upside that receives from the second evaporation part 11B of the heat of CPU21B.
To the first condensation part 12A and second condensation part 12B air-supply, promote heat radiation through main fan 22.
In addition, ring-like heat pipe 10 has been shown in Fig. 3 has been assembled in the example on the blade server, but ring-like heat pipe 10 also can be assembled in be used on other electronic equipments with heater the cooling.
Then, use Fig. 4 and Fig. 5, further specify the first evaporation part 11A below.The structure of the second evaporation part 11B is identical with the first evaporation part 11A, thereby the explanation of the first evaporation part 11A also is applicable to the second evaporation part 11B.
As shown in Figure 4, the first evaporation part 11A is long shape.The length direction of the first evaporation part 11A is consistent with the direction that working fluid 16 flows in the stream of ring-like heat pipe 10.The flow direction of in Fig. 4, representing working fluid 16 with arrow.
In addition, like Fig. 4 and shown in Figure 5, the first evaporation part 11A has metal tube 32 that disposes in the metal derby 31, the cavity metal derby 31 in of the configuration of long framework 30, the central portion in framework 30 and the capillary wick (wick) 33 that in metal tube 32, disposes.
The length direction of framework 30 is consistent with the length direction of the first evaporation part 11A.The end of the side on the length direction of framework 30 is connected with the second liquid pipe 14B.In addition, the end of the opposite side on the length direction of framework 30 is connected with the first steam pipe 13A.
Heaters such as CPU21A carry out thermally coupled via hot fat hot joining condensation materials (not shown) such as (thermal grease) and framework 30.
As shown in Figure 5, at the inner surface of metal tube 32, along circumferentially being formed with a plurality of protuberance 34a and recess 34b with the spacing of stipulating.On the whole length direction of metal tube 32, be formed with protuberance 34a and recess 34b.The space of the groove shape that between this recess 34b and capillary wick 33, forms becomes the path of working fluid 16.
As shown in Figure 4, capillary wick 33 is long tubular.Capillary wick 33 be positioned at the open-ended of the second liquid pipe 14B side, be positioned at the closed-end of the first steam pipe 13A side.
When the working fluid 16 of liquid phase when the second liquid pipe 14B flows in the first evaporation part 11A, working fluid 16 immerses in the capillary wick 33 by capillarity, capillary wick 33 becomes by the wetting state of working fluid 16.The working fluid 16 that immerses the liquid phase in the capillary wick 33 is supplied with the heat heating that comes and is evaporated (gasification) from heaters such as CPU21A.
In addition, the pore of the working fluid 16 that is present in the gas phase in the inboard blank part of capillary wick 33 itself, capillary wick 33 surfaces, capillary wick 33 through capillary wick 33 flows from the blank part of inboard laterally.
Have the first evaporation part 11A of said structure, for example the heater with respect to the size with long 30mm * wide 30mm is CPU, can the size of framework 30 be formed long 50mm * wide 50mm * high 20mm.In addition, can the size of metal derby 31 be formed long 40mm * wide 40mm * high 20mm.In addition, the size of metal tube 32 can form external diameter 14mm, internal diameter 10mm (pipe thickness 2mm).And, for example form the recess 34b of degree of depth 1mm with the 2mm spacing at the inner surface of metal tube 32.And the size of capillary wick 33 can form external diameter 10mm, internal diameter 4mm.
Then, use Fig. 2 and Fig. 3, further specify the first condensation part 12A below.The structure of the second condensation part 12B is identical with the first condensation part 12A, thereby the explanation of the first condensation part 12A also is applicable to the second condensation part 12B.
A plurality of first heat sink 41A as shown in Figure 2, that the first condensation part 12A has the first condenser pipe 40A, is connected with the first condenser pipe 40A.
End in the side of the first condenser pipe 40A is connected with the first steam pipe 13A.End at the opposite side of the first condenser pipe 40A is connected with the first liquid pipe 14A.
The a plurality of first heat sink 41A and the first condenser pipe 40A carry out thermally coupled, and the heat of flowing process fluid 16 is distributed through a plurality of first heat sink 41A in the first condenser pipe 40A.
As shown in Figure 3, from promoting heat radiation, this considers on the one hand to make the working fluid 16 of gas phase become liquid phase mutually, preferably through a plurality of first heat sink 41As air-supplies of main fan 22 grades to the first condensation part 12A.
Then, use Fig. 2 and Fig. 3, further specify the first steam pipe 13A below.The structure of the second steam pipe 13B is identical with the first steam pipe 13A, thereby the explanation of the first steam pipe 13A also is applicable to the second steam pipe 13B.
The end of the side of the first steam pipe 13A is connected with the first evaporation part 11A.In addition, the end of the opposite side of the first steam pipe 13A is connected with the first condensation part 12A.
Not that the working fluid 16 that only limits to gas phase flows in the first steam pipe 13A.According to the duty of ring-like heat pipe 10 with environment is set, working fluid 16 becomes liquid phase between the first evaporation part 11A and the first condensation part 12A sometimes, thereby the working fluid 16 of the gas-liquid mixed that in the first steam pipe 13A, flows sometimes.
The first steam pipe 13A uses the high metal formation of thermal conductivity such as copper.
Then, use Fig. 2 and Fig. 3, further specify the first liquid pipe 14A below.The structure of the second liquid pipe 14B is identical with the first liquid pipe 14A, thereby the explanation of the first liquid pipe 14A also is applicable to the second liquid pipe 14B.
The end of the side of the first liquid pipe 14A is connected with the first condensation part 12A.In addition, the end of the opposite side of the first liquid pipe 14A is connected with the second evaporation part 11B.
In the first liquid pipe 14A, be not limited in the working fluid 16 of the liquid phase that flows.According to the duty of ring-like heat pipe 10 with environment is set, working fluid 16 becomes gas phase between the first condensation part 12A and the second evaporation part 11B sometimes, thereby the working fluid 16 of the gas-liquid mixed that in the first liquid pipe 14A, flows sometimes.
The first liquid pipe 14A uses the high metal formation of thermal conductivity such as copper.
The amount that preferably is enclosed in the working fluid 16 in the ring-like heat pipe 10 is the amount that the working fluid 16 of liquid phase fills up the first evaporation part 11A, the second liquid pipe 14B, the second evaporation part 11B and the first liquid pipe 14A.In addition, more preferably the amount of this working fluid 16 is a bit larger tham volume half the of the stream of ring-like heat pipe 10.If the amount of working fluid 16 is measured greater than this, then flow resistance increases, and resistance to heat increases.On the other hand, if the amount of working fluid 16 is less than this amount, the action of then ring-like heat pipe 10 is unstable.
Then, use the action of the ring-like heat pipe 10 of (A)～(D) explanation of Fig. 6 below.(A)～(D) of Fig. 6 is the figure of the action of the ring-like heat pipe of explanation.
At first, shown in Fig. 6 (A), in ring-like heat pipe 10, the first evaporation part 11A is configured in the upside of the second evaporation part 11B on vertical.Thereby under prestarting state, the working fluid 16 of liquid phase is trapped in the downside of ring-like heat pipe 10, and the inside of the second evaporation part 11B is filled up by the working fluid 16 of liquid phase.In the pore of the inner capillary wick 33 of the second evaporation part 11B, immerse the working fluid 16 that liquid phase is arranged.
The part of the upside of ring-like heat pipe 10 is filled up by the working fluid 16 of gas phase.Thereby the inside of the first evaporation part 11A is filled up by the working fluid 16 of gas phase.That is, the state that the capillary wick 33 in the first evaporation part 11A is in dry is so the first evaporation part 11A is in the state of so-called drying (dry out).
Then, when the ring-like heat pipe 10 of starting, at first, the second evaporation part 11B begins to be heated.For example, in example shown in Figure 3, only CPU21B running, the second evaporation part 11B receives from the heat as the CPU21B of heater.
Be heated since the second evaporation part 11B passed through official hour after, just make the first evaporation part 11A begin to be heated.This official hour, working fluid 16 beginning that is based on liquid phase flow at the first evaporation part 11A, and the needed time sets.
In the second evaporation part 11B that has received from the heat of heater, at first, framework 30 is by the heater heating, and the heat that acts on framework 30 is passed to metal derby 31.The heat that is passed to metal derby 31 is passed to metal tube 32, and the heat that is passed to metal tube 32 is passed to capillary wick 33 via the protuberance 34a of metal tube 32, thereby capillary wick 33 is heated.
When the temperature of the capillary wick 33 that has been heated rises, working fluid 16 boilings of the liquid phase in the pore of capillary wick 33 and gasifying.Along with working fluid 16 becomes gas phase mutually in the pore of capillary wick 33, the pressure in the pore increases, thereby the working fluid 16 of gas phase is forced into the outer surface of capillary wick 33.
Be forced into the working fluid 16 recess 34b through metal tube 32 for example of gas phase of the outer surface of capillary wick 33, to the internal flow of the framework 30 of the second steam pipe 13B side.Then, the working fluid 16 of gas phase flows in the second steam pipe 13B.
In addition, under the operating condition after 10 startings of ring-like heat pipe, there is the working fluid 16 of gas phase sometimes in the inboard of the metal tube 32 of the second evaporation part 11B.The working fluid 16 of this gas phase also increases the outer surface that is forced into capillary wick 33 because of the pressure that the gasification of working fluid 16 produces.
Then, shown in Fig. 6 (B), along with the pressure in the framework 30 of the second evaporation part 11B rises, the working fluid 16 of the liquid phase in the second steam pipe 13B is forced in the second condensation part 12B.The working fluid 16 of liquid phase is forced in the second liquid pipe 14B from the second condensation part 12B again, thereby the liquid level in the second liquid pipe 14B rises.
Then, the working fluid 16 of the gas phase of being pushed by the working fluid 16 of liquid phase flows in the first evaporation part 11A, and then after in the first steam pipe 13A, flowing, flows in the first condensation part 12A.The working fluid 16 that arrives the gas phase of the first condensation part 12A is changed to liquid phase through the heat radiation condensation.The heat that working fluid 16 is had is passed to the first heat sink 41A via the first condenser pipe 40A, and the heat that is passed to the first heat sink 41A is distributed from the first heat sink 41A.
Like this, at the first condensation part 12A, the working fluid 16 of gas phase is cooled, and all or part of is changed to liquid phase.As a result, in the first condensation part 12A and the first steam pipe 13A, be detained the working fluid 16 that liquid phase is arranged, liquid level rises.
Then, shown in Fig. 6 (C), the working fluid 16 of the liquid phase in the second liquid pipe 14B that is pressed since the second condensation part 12B, one side flows in the first evaporation part 11A.
At this constantly, the first evaporation part 11A begins to receive for the first time heat.For example, as shown in Figure 3, the CPU21A entry into service, the first evaporation part 11A receives from the heat as the CPU21A of heater.
The working fluid 16 of the liquid phase that in the first evaporation part 11A, flows is changed to gas phase, and the working fluid 16 of gas phase flows in the first steam pipe 13A.
Then, shown in Fig. 6 (D), the working fluid 16 of liquid phase is solid with the capillary wick 33 of the first evaporation part 11A almost, and the action of ring-like heat pipe 10 is stable.Under the state that the action of ring-like heat pipe 10 has been stablized, the working fluid 16 that becomes liquid phase becomes the state that almost the first evaporation part 11A, the second evaporation part 11B, the first liquid pipe 14A and the second liquid pipe 14B is filled up.Other parts of ring-like heat pipe 10 are filled up by the working fluid 16 of gas phase.
Like this, stably cool off two heater coolings through ring-like heat pipe 10.
According to above-mentioned ring-like heat pipe 10, ring-like heat pipe is formed by the stream of a loop shape, thereby size is little.In addition, ring-like heat pipe 10 has two evaporation parts, thereby can cool off two heaters.
In addition, according to the starting method of above-mentioned ring-like heat pipe 10, because begin to be heated, so can start ring-like heat pipe 10 reliably in the evaporation part of having been filled up by the working fluid 16 of liquid phase.
For example, in blade server,, just can, the working fluid through liquid phase all be filled up by two evaporation parts ring-like heat pipe when starting as long as can two CPU be configured in the downside (downside of vertical) of substrate with two CPU.But such configuration receives the restriction of the structure of blade server, thereby is difficult to sometimes realize.
And in the blade server with two CPU, under the situation, two CPU are configured in different positions on vertical mostly.In this case, when two CPU were provided with independent ring-like heat pipe respectively, when starting, the CPU that the working fluid of liquid phase could not fill up and be configured in the upside of vertical carried out hot linked evaporation part.In the evaporation part, do not have under the state of working fluid of liquid phase, even want to start ring-like heat pipe, because in the evaporation part be dry status, thus can not make the working fluid of liquid phase be changed to gas phase, thereby ring-like heat pipe is inoperative.
On the other hand, according to above-mentioned ring-like heat pipe 10, because in a loop, have two evaporation parts, so when starting, be easy in the evaporation part that downside disposed of vertical, fill up the working fluid of liquid phase.In addition; Starting method according to above-mentioned ring-like heat pipe; The evaporation part that downside disposed of vertical began to be heated before this, and after the working fluid of liquid phase began to flow through the evaporation part that upside disposed of vertical, the evaporation part that begins this upside is disposed was heated.Thereby, ring-like heat pipe is started reliably.
Above-mentioned ring-like heat pipe 10 stably moves under the equal situation of the received heat of the first evaporation part 11A and the second evaporation part 11B.But; Under the unequal situation of received heat of the first evaporation part 11A and the second evaporation part 11B; In the first evaporation part 11A and the second evaporation part 11B; Working fluid 16 is different from the variable quantity that liquid phase is changed to gas phase, thereby the distribution of the working fluid 16 in the stream produces unevenly, possibly make the circulation of working fluid 16 unstable or stop.
Below, use Fig. 7 that the example of this situation is described.Fig. 7 explains in ring-like heat pipe 10 figure of the unbalanced state of received heat.
In ring-like heat pipe 10 shown in Figure 7, the received heat of the first evaporation part 11A increases, and on the other hand, the received heat of the second evaporation part 11B reduces, and is in the unbalanced state of received heat.For example, if describe with the example of blade server shown in Figure 3, then be equivalent to following situation, that is, the running rate of CPU21A rises and the caloric value increase, and on the other hand, the running rate of CPU21B reduces caloric value and reduces.
In ring-like heat pipe 10, the gasification rate of the working fluid 16 among the big first evaporation part 11A of received heat becomes faster than the gasification rate of the working fluid 16 among the second little evaporation part 11B of received heat.
And the working fluid 16 of the liquid phase in the second liquid pipe 14B reduces, and on the other hand, the working fluid 16 of the liquid phase in the first liquid pipe 14A increases.The liquid level that the working fluid 16 of liquid phase has been shown in Fig. 7 rises to the state in the first steam pipe 13A.
If this state continues again, then in the first evaporation part 11A, do not have working fluid 16, the first evaporation part 11A of liquid phase to become dry status, thereby working fluid 16 stop circulation.
Such phenomenon especially is easy to be positioned under the bigger situation of the flow resistance of working fluid 16 of situation etc. of the position that is lower than the condensation part in the big situation of the distance between evaporation part and condensation part, evaporation part and causes.
Thereby, hope also can stably move under the unbalanced situation of received heat of ring-like heat pipe in two evaporation parts.
Therefore, even as the ring-like heat pipe that under the unbalanced situation of the received heat of two evaporation parts, also can stably move, the ring-like heat pipe of second to the 4th embodiment is described with reference to the accompanying drawings.Aspect for second to the 4th embodiment does not specify suitably is suitable for the explanation of detailing in the first above-mentioned embodiment.In addition, in Fig. 8～Figure 11, the structure identical with Fig. 2～Fig. 7 marked identical Reference numeral.
Fig. 8 shows the ring-like heat pipe 50 of disclosed second embodiment of this specification.
Ring-like heat pipe 50 has the bypass pipe 15 that connects the first steam pipe 13A and the second steam pipe 13B.Bypass pipe 15 has following effect, that is, in the received heat imbalance of two evaporation parts etc., and the distribution of the working fluid 16 in the stream is produced under the uneven situation, and working fluid 16 is flowed, and makes ring-like heat pipe 50 recover stable operating condition.
In addition, the sectional area of the flow part of the working fluid 16 in the preferred bypass pipe 15 is smaller or equal to the sectional area of the flow part of the working fluid 16 among the first steam pipe 13A and the second steam pipe 13B.The pressure loss of the working fluid 16 in the preferred bypass pipe 15 is greater than the pressure loss in liquid pipe and the steam pipe.
This be for, under the state of ring-like heat pipe 50 operating stablies, improve the flow resistance of 15 pairs of working fluids 16 of bypass pipe, prevent that working fluid 16 is easy to flow to bypass pipe 15.
Then, preference relation between the above-mentioned sectional area of above-mentioned sectional area and the first steam pipe 13A and the second steam pipe 13B of bypass pipe 15 is described.
That is, the ratio of the sectional area of the flow part among the sectional area of the flow part in the preferred bypass pipe 15 and the first steam pipe 13A and the second steam pipe 13B is in 0.1～1 scope, and is especially preferred in 0.4～0.6 scope.
Consider under the situation of skewness of the working fluid 16 in stream, working fluid 16 is flowed fast, and make the action of ring-like heat pipe recover the situation of stable state, the ratio of preferred above-mentioned sectional area is more than 0.1.When the ratio of above-mentioned sectional area less than 0.1 the time, it is big that the pressure loss in the bypass pipe 15 becomes, fluid 16 flowing in bypass pipe 15 can hinder one's work.
In addition, consider when ring-like heat pipe 50 operating stablies that prevent the situation that working fluid 16 preferentially flows to bypass pipe 15, the ratio of preferred above-mentioned sectional area is below 1.In addition, because the ratio of above-mentioned sectional area is below 1, thereby utilize capillary force that the working fluid 16 of liquid phase is flowed in the bypass pipe 15.
The length of bypass pipe 15 is suitably set according to the structure of ring-like heat pipe 50 configurations.
In addition, in order to improve, ring portion, bend etc. can be set on bypass pipe 15 to making the pressure loss of fluid 16.
The structure of other parts of ring-like heat pipe 50 and above-mentioned first embodiment are same.
Below, use the action of the ring-like heat pipe 50 of (A)～(D) explanation of Fig. 9.(A)～(D) of Fig. 9 is the figure of the action of the ring-like heat pipe 50 of explanation.
At first, the ring-like heat pipe 50 of the state shown in Fig. 9 (A) moves under stable status.Ring-like heat pipe 50 reaches the operating stably state from starting process is identical with the first above-mentioned embodiment.
Then, shown in Fig. 9 (B), ring-like heat pipe 50 is changed to following state: the received heat of the first evaporation part 11A increases, and on the other hand, the received heat of the second evaporation part 11B reduces, and received heat is uneven.
In ring-like heat pipe 50, the gasification rate of the working fluid 16 among the big first evaporation part 11A of received heat becomes faster than the gasification rate of the working fluid 16 among the second little evaporation part 11B of received heat.
Then, the working fluid 16 of the liquid phase in the second liquid pipe 14B reduces.Because the amount of the working fluid 16 in the stream is constant, so the working fluid 16 of the liquid phase in the first liquid pipe 14A increases.Under the state shown in (B) of Fig. 9, the liquid level of the working fluid 16 of liquid phase rises to the inside of the first condensation part 12A.
As a result, the pressure of the gas phase of the working fluid 16 among second liquid pipe 14B part reduces, and on the other hand, the pressure in the first steam pipe 13A increases.Along with the pressure in the second liquid pipe 14B reduces, the second condensation part 12B and the second steam pipe 13B pressure inside also reduce.
So the working fluid 16 of the gas phase in the first steam pipe 13A flows in bypass pipe 15, flows into the second steam pipe 13B.The working fluid 16 that flows into the second steam pipe 13B flows into the second liquid pipe 14B after being changed to liquid phase through the second condensation part 12B.In addition, in the first steam pipe 13A, have sometimes under the situation of working fluid 16 of liquid phase, the working fluid 16 of liquid phase also flows in bypass pipe 15.
As a result, the working fluid 16 of the liquid phase in the second liquid pipe 14B increases, and on the other hand, the working fluid 16 of the liquid phase in the first liquid pipe 14A reduces.Like this, the distribution of the working fluid 16 in the ring-like heat pipe 50 reverts to the state shown in (A) of Fig. 9 automatically.Its result, ring-like heat pipe 50 reverts to stable operating state.
But; Under the big situation of the decrease of the received heat of the recruitment of the received heat of the first evaporation part 11A and the second evaporation part 11B; Further be changed to the serious unbalanced state of received heat, the distribution meeting of the working fluid 16 in the ring-like heat pipe 50 is to the state variation shown in Fig. 9 (C).
Under the state shown in (C) of Fig. 9, the working fluid 16 of the liquid phase in the second liquid pipe 14B further reduces, and on the other hand, the working fluid 16 of the liquid phase in the first liquid pipe 14A further increases.Under the state shown in (C) of Fig. 9, the liquid level of the working fluid 16 of liquid phase rises to the inside of the first steam pipe 13A.
Then; When the liquid level of working fluid 16 reaches the height of junction of bypass pipe 15; Shown in Fig. 9 (D), the working fluid 16 of the liquid phase in the first steam pipe 13A flows in bypass pipe 15 through pressure differential and capillary force, and flows in the second steam pipe 13B.
The working fluid 16 that flows in the second steam pipe 13B flows in the second condensation part 12B, and flows in the second liquid pipe 14B.
As a result, the working fluid 16 of the liquid phase in the second liquid pipe 14B increases, and on the other hand, the working fluid 16 of the liquid phase in the first liquid pipe 14A reduces.Like this, the distribution of the working fluid 16 in the ring-like heat pipe 50 reverts to the state shown in (A) of Fig. 9 automatically.Thereby ring-like heat pipe 50 reverts to stable operating state.
In addition, in the explanation of the action of above-mentioned ring-like heat pipe 50, increase and situation that the received heat of the second evaporation part 11B reduces is an example with the received heat of the first evaporation part 11A.But; Received heat at the first evaporation part 11A increases, and the unconverted situation of the received heat of the second evaporation part 11B, perhaps the received heat of the first evaporation part 11A is constant; And under the situation that only received heat of the second evaporation part 11B reduces, ring-like heat pipe 50 can likewise revert to stable operating state.
Like this, for ring-like heat pipe 50, produce under the situation about changing relatively at received heat between the first evaporation part 11A and the second evaporation part 11B, the distribution of working fluid 16 in stream can revert to normal state, thereby reverts to stable operating state.
And; For ring-like heat pipe 50; Under the situation that cooling capacity between the first condensation part 12A and the second condensation part 12B has taken place to change relatively, the distribution of working fluid 16 in stream also can revert to normal state, thereby reverts to stable operating state.
According to above-mentioned ring-like heat pipe 50; Under the situation of the skewness of the working fluid 16 in stream; Working fluid 16 flow to the second steam pipe 13B from the first steam pipe 13A, thereby ring-like heat pipe 50 can revert to stable operating state through bypass pipe 15.
Thereby, according to ring-like heat pipe 50, even under the unbalanced situation of the received heat of two evaporation parts, also can stably move.
In addition, ring-like heat pipe 50 be because can eliminate the phenomenon of the skewness of the working fluid 16 that produces in the stream under the situation of external energies such as electrification not, thereby can save the energy.
Then, use Figure 10 that the ring-like heat pipe of the 3rd embodiment is described.Figure 10 is the figure of the ring-like heat pipe 60 of disclosed the 3rd embodiment of this specification of expression.
In ring-like heat pipe 60, the size of the first evaporation part 11A and the second evaporation part 11B is different.For example, can make the length of the second evaporation part 11B is 2 times of the first evaporation part 11A.
Ring-like heat pipe 60 can be used in two different heaters of caloric value are cooled off.In addition, ring-like heat pipe 60 can cool off two different heaters of size.
For example, ring-like heat pipe 60 is used for the CPU and the chip controller (chip controller) that are installed on the server are cooled off.Usually, the size of CPU and caloric value are bigger than chip controller.
About the first evaporation part 11A, for example the heater with respect to the size with long 20mm * wide 20mm is a chip controller, can the size of metal derby 31 be formed long 30mm * wide 30mm * high 20mm.In addition, about the second evaporation part 11B, for example the heater with respect to the size with long 30mm * wide 30mm is CPU, can make the size of metal derby 31 form long 50mm * wide 50mm * high 20mm.
The structure of other parts of ring-like heat pipe 60 and above-mentioned second embodiment are same.
According to above-mentioned ring-like heat pipe 60, can use with the size and the corresponding evaporation part of caloric value of heater and cool off heater efficiently.
Then, use Figure 11 that the ring-like heat pipe of the 4th embodiment is described.Figure 11 is the figure of blade server 80 that expression is assembled with the ring-like heat pipe 70 of disclosed the 4th embodiment of this specification.
Shown in figure 11, in ring-like heat pipe 70, first condensation part and second condensation part are integrally formed.
Specifically, on the second condenser pipe 40B of the first condenser pipe 40A of first condensation part and second condensation part, engage shared a plurality of heat sinks 41 are arranged.
The structure of other parts of ring-like heat pipe 70 and above-mentioned second embodiment are same.
According to above-mentioned ring-like heat pipe 70,, thereby can make size littler because first condensation part and second condensation part are integrally formed.
In the present invention, the ring-like heat pipe and the starting method thereof of each above-mentioned embodiment only otherwise break away from aim of the present invention, can suitably be changed.
For example, in above-mentioned embodiment, the first evaporation part 11A is configured in the upside of the second evaporation part 11B on vertical, but also can the second evaporation part 11B be configured in the upside of the first evaporation part 11A on vertical.
At this moment, when making ring-like heat pipe, the vertical when ring-like heat pipe 10 uses under the unascertainable situation, for example following member of formation can be set.1. on ring-like heat pipe 10, acceleration transducer is set, thereby can judges vertical.2. after the starting just of ring-like heat pipe 10, the temperature of two heaters such as monitoring CPU is confirmed the big heater of temperature rising.And, delay the stipulated time to the temperature big heater supply capability that rises, the starting of two heaters is provided with the time difference.Through such member of formation is set, can make the evaporation part of the downside that is positioned at vertical begin to be heated earlier.
In addition, in each above-mentioned embodiment, the first steam pipe 13A, the second steam pipe 13B, the first liquid pipe 14A and the second liquid pipe 14B are formed by the pipe of equal diameter, but the diameter of each pipe also can be different.
In addition, in each above-mentioned embodiment, use schematically illustrated ring-like heat pipe to be illustrated, the structure of each member of formation, configuration or shape etc. are not limited to illustrated mode.The shape (pipe arrangement layout) of for example, the configuration of evaporation part or condensation part, the steam pipe that connects evaporation part and condensation part and liquid pipe can be set arbitrarily according to the internal structure of the electronic equipment that will assemble ring-like heat pipe etc. etc.In addition, can be according to configuration, the shape of evaporation part, condensation part, steam pipe or liquid pipe, be provided with arbitrarily and employed fin and reached other members such as employing fan.
Below, use embodiment to further specify the action effect of the disclosed ring-like heat pipe of this specification.But the present invention is not limited by embodiment.
Embodiment
[embodiment 1]
At first, form the ring-like heat pipe of structure shown in Figure 8.Then, this ring-like heat pipe is assembled on the blade server of that kind shown in Figure 3.Then, make the real estate of blade server be in direction, formed the state of two evaporation part horizontal arrangement thus perpendicular to vertical.Making the caloric value of the CPU A that first evaporation part is heated is 0W, and making the caloric value of the CPU B that second evaporation part is heated is 60W, constitutes embodiment 1.
[embodiment 2]
Except the caloric value that makes the CPU A that first evaporation part is heated is 20W, making the caloric value of the CPU B that second evaporation part is heated is beyond the 60W, likewise constitutes embodiment 2 with embodiment 1.
[embodiment 3]
Except the caloric value that makes the CPU A that first evaporation part is heated is 40W, making the caloric value of the CPU B that second evaporation part is heated is beyond the 60W, likewise constitutes embodiment 3 with embodiment 1.
[embodiment 4]
Except the caloric value that makes the CPU A that first evaporation part is heated is 60W, making the caloric value of the CPU B that second evaporation part is heated is beyond the 60W, likewise constitutes embodiment 4 with embodiment 1.
[embodiment 5]
Except the caloric value that makes the CPU A that first evaporation part is heated is 60W, making the caloric value of the CPU B that second evaporation part is heated is beyond the 40W, likewise constitutes embodiment 5 with embodiment 1.
[embodiment 6]
Except the caloric value that makes the CPU A that first evaporation part is heated is 60W, making the caloric value of the CPU B that second evaporation part is heated is beyond the 20W, likewise constitutes embodiment 6 with embodiment 1.
[embodiment 7]
Except the caloric value that makes the CPU A that first evaporation part is heated is 60W, making the caloric value of the CPU B that second evaporation part is heated is beyond the 0W, likewise constitutes embodiment 7 with embodiment 1.
[embodiment 8]
The real estate of blade server is on the direction that is parallel to vertical, forms the state of two evaporation parts thus along the vertical configuration.In addition, what make the upside that is configured in vertical is used to that to make the caloric value of the CPU A that first evaporation part is heated be 0W, and what make the downside that is configured in vertical is used to that to make the caloric value of the CPU B that second evaporation part is heated be 60W.In addition, likewise constitute embodiment 8 with embodiment 1.
[embodiment 9]
What make the upside that is configured in vertical is used to that to make the caloric value of the CPU A that first evaporation part is heated be 20W, and what make the downside that is configured in vertical is used to that to make the caloric value of the CPU B that second evaporation part is heated be 60W.In addition likewise constitute embodiment 9 with embodiment 8.
[embodiment 10]
What make the upside that is configured in vertical is used to that to make the caloric value of the CPU A that first evaporation part is heated be 40W, and what make the downside that is configured in vertical is used to that to make the caloric value of the CPU B that second evaporation part is heated be 60W.In addition likewise constitute embodiment 10 with embodiment 8.
[embodiment 11]
What make the upside that is configured in vertical is used to that to make the caloric value of the CPU A that first evaporation part is heated be 60W, and what make the downside that is configured in vertical is used to that to make the caloric value of the CPU B that second evaporation part is heated be 60W.In addition likewise constitute embodiment 11 with embodiment 8.
[embodiment 12]
What make the upside that is configured in vertical is used to that to make the caloric value of the CPU A that first evaporation part is heated be 60W, and what make the downside that is configured in vertical is used to that to make the caloric value of the CPU B that second evaporation part is heated be 40W.In addition likewise constitute embodiment 12 with embodiment 8.
[embodiment 13]
What make the upside that is configured in vertical is used to that to make the caloric value of the CPU A that first evaporation part is heated be 60W, and what make the downside that is configured in vertical is used to that to make the caloric value of the CPU B that second evaporation part is heated be 20W.In addition likewise constitute embodiment 13 with embodiment 8.
[embodiment 14]
What make the upside that is configured in vertical is used to that to make the caloric value of the CPU A that first evaporation part is heated be 60W, and what make the downside that is configured in vertical is used to that to make the caloric value of the CPU B that second evaporation part is heated be 0W.In addition likewise constitute embodiment 14 with embodiment 8.
At first, stop to the blade server supply capability, through after the sufficiently long time, formation comprises that the blade server integral body of CPU and ring-like heat pipe remains the state of room temperature equably.Then, begin, reach temperature when the temperature of measuring CPU A and CPU B has risen to the blade server supply capability.
Figure 12 shows the mensuration result.
In embodiment 14, begin after about 1 minute of blade server supply capability, the temperature of CPU A has reached 80 ℃.Can know: under the situation of evaporation part arranged perpendicular, second evaporation part that is configured in the downside of vertical is not heated, and ring-like heat pipe does not turn round.
On the other hand, in embodiment 1～13, CPU A and CPU B reach temperature all less than 60 ℃.That is, can know: under the situation of two evaporation part arranged perpendicular, be heated as long as be disposed at second evaporation part of the downside of vertical, ring-like heat pipe is running just, and CPU A and CPU B are cooled.In addition, can know: under the situation of evaporation part horizontal arrangement, even any evaporation part is not heated, ring-like heat pipe also turns round, thereby CPU A and CPU B are cooled.
In addition, use the ring-like heat pipe of structure shown in Figure 11, carry out the mensuration same, obtained same result with embodiment 1～embodiment 14.
Then, use the two-phase fluid analogue means, computer-experiment is carried out in the action of the ring-like heat pipe of Fig. 2 and structure shown in Figure 8, obtain embodiment 15～embodiment 18.The two-phase fluid analogue means uses SINDA/FLUINT (hot-fluid analysis software, C&R TECHNOLOGIES company makes).
[embodiment 15]
Use the ring-like heat pipe of structure shown in Figure 2.Cold-producing medium uses the R141b of specific CFC HCFC (hydrochlorofluorocarbon).The internal diameter of the first liquid pipe, the second liquid pipe, first steam pipe and second steam pipe is 4.5mm.The length of the first liquid pipe and the second liquid pipe is 1.0m, and the length of first steam pipe and second steam pipe is 1.0m.The length of first condensation part and second condensation part is 1.0m.First evaporation part and second evaporation part are outputted as the calandria heating of 150W respectively.First evaporation part and second evaporation part horizontal arrangement on vertical.Ring-like heat pipe has first assembly and second assembly; Said first assembly is formed by second condensation part, the second liquid pipe, first evaporation part and first steam pipe, and said second assembly is formed by first condensation part, the first liquid pipe, second evaporation part and second steam pipe.In each assembly, the liquid pipe is 8 scales (grid), and the evaporation part is 2 scales, and steam pipe is 12 scales, and the condensation part is 8 scales.And, obtain under the stable state of ring-like heat pipe ratio for the gas phase of the working fluid of each scale of each assembly.Result of calculation has been shown in Figure 13.
[embodiment 16]
Except using the ring-like heat pipe of structure shown in Figure 8, likewise form embodiment 16 with embodiment 15.The internal diameter of bypass pipe is 4.5mm, and the length of bypass pipe is 1.4m.Result of calculation has been shown in Figure 14.
[embodiment 17]
Except first evaporation part of first assembly is outputted as the calandria heating of 50W and second evaporation part of second assembly is outputted as the calandria heating of 150W, likewise formed embodiment 17 with embodiment 15.Result of calculation has been shown in Figure 15.
[embodiment 18]
Except following situation, likewise formed embodiment 18 with embodiment 16, promptly; Use the ring-like heat pipe of structure shown in Figure 8; And first evaporation part of first assembly is outputted as the calandria heating of 50W, and second evaporation part of second assembly is outputted as the calandria heating of 150W.Result of calculation has been shown in Figure 16.
Like Figure 13 and shown in Figure 14, in the embodiment 15 and embodiment 16 of the same heating of two evaporation parts quilts, in steam pipe, whole working fluids is a gas phase, and in the liquid pipe, whole working fluids is a liquid phase.
Shown in figure 15, in embodiment 17, working fluid flows in ring-like heat pipe, and in first steam pipe of first assembly, about 4 of working fluid becomes gas phase, and about 6 become liquid phase.On the other hand, in second assembly, the working fluid of second steam pipe all is a gas phase.
Shown in figure 16, in embodiment 18, in steam pipe, whole working fluids all is a gas phase, and in the liquid pipe, whole working fluids all is a liquid phase.Thereby can know: through in the structure of the ring-like heat pipe of embodiment 17, bypass pipe being set, in the steam pipe of first assembly, working fluid all becomes gas phase.
The purpose that is used to reach the instruction property of the invention and the notion that help the reader deeply to understand the inventor at technical elements at the term of all examples of this narration and additional conditions.Should be interpreted as example and the condition that is not limited to above-mentioned concrete narration at all examples of this narration and the term of additional conditions.In addition, illustrative mechanism in the specification and expression superiority of the present invention and not enough irrelevant.Though embodiment of the present invention has carried out explanation at length, is construed as, as long as without departing from the spirit or scope of the invention, can carry out various changes, displacement or modification.
The explanation of Reference numeral
10,50,60,70 ring-like heat pipes
11A first evaporation part
11B second evaporation part
12A first condensation part
12B second condensation part
13A first steam pipe
13B second steam pipe
The 14A first liquid pipe
The 14B second liquid pipe
15 bypass pipes
16 working fluids
20 blade servers
21A?CPU
21B?CPU
22 main fans
30 frameworks
31 metal derbies
32 metal tubes
33 capillary wick
34 grooves
40A, 40B condenser pipe
41 heat sinks
80 blade servers
81A?CPU
81B?CPU
Claims (11)
1. ring-like heat pipe is characterized in that having:
First evaporation part and second evaporation part receive the heat from heater, make the working fluid evaporation of liquid phase and become the working fluid of gas phase mutually;
First condensation part and second condensation part make the working fluid condensation of gas phase through heat radiation and become the working fluid of liquid phase mutually;
First steam pipe makes the working fluid that is changed to gas phase by said first evaporation part flow to said first condensation part;
The first liquid pipe makes the working fluid that is changed to liquid phase by said first condensation part flow to said second evaporation part;
Second steam pipe makes the working fluid that is changed to gas phase by said second evaporation part flow to said second condensation part;
The second liquid pipe makes the working fluid that is changed to liquid phase by said second condensation part flow to said first evaporation part.
2. ring-like heat pipe as claimed in claim 1 is characterized in that having bypass pipe, and this bypass pipe connects said first steam pipe and said second steam pipe.
3. ring-like heat pipe as claimed in claim 2 is characterized in that, said bypass pipe connects near near the part said second condensation part that is in of part and said second steam pipe said first condensation part of being in of said first steam pipe.
4. like claim 2 or 3 described ring-like heat pipes, it is characterized in that the sectional area of the flow part of the working fluid in the said bypass pipe is smaller or equal to the sectional area of the flow part of the working fluid in said first steam pipe and second steam pipe.
5. ring-like heat pipe as claimed in claim 4 is characterized in that, the ratio of the said sectional area of said bypass pipe and the said sectional area of said first steam pipe and second steam pipe is in 0.1～1 scope.
6. like each described ring-like heat pipe in the claim 1～5, it is characterized in that said first evaporation part is disposed at the upside of said second evaporation part on vertical.
7. like each described ring-like heat pipe in the claim 1～6, it is characterized in that said first condensation part and said second condensation part form as one.
8. ring-like heat pipe as claimed in claim 7 is characterized in that,
Said first condensation part has first condenser pipe, and said second condensation part has second condenser pipe,
On said first condenser pipe and said second condenser pipe, engage shared a plurality of heat sinks are arranged.
9. the starting method of a ring-like heat pipe,
This ring-like heat pipe has:
First evaporation part and second evaporation part receive the heat from heater, and make the working fluid evaporation of liquid phase and become the working fluid of gas phase mutually,
First condensation part and second condensation part make the working fluid condensation of gas phase through heat radiation and become the working fluid of liquid phase mutually,
First steam pipe makes the working fluid that is changed to gas phase by said first evaporation part flow to said first condensation part,
The first liquid pipe makes the working fluid that is changed to liquid phase by said first condensation part flow to said second evaporation part,
Second steam pipe makes the working fluid that is changed to gas phase by said second evaporation part flow to said second condensation part,
The second liquid pipe makes the working fluid that is changed to liquid phase by said second condensation part flow to said first evaporation part;
Said first evaporation part is disposed at the upside of said second evaporation part on vertical;
The starting method of this ring-like heat pipe is characterised in that,
Begin to be heated from said second evaporation part passed through official hour after, make said first evaporation part begin to be heated.
10. the starting method of ring-like heat pipe as claimed in claim 9 is characterized in that, said official hour, the working fluid that is based on liquid phase begin to flow in said first evaporation part, and the needed time confirms.
11. the starting method like claim 9 or 10 described ring-like heat pipes is characterized in that, said ring-like heat pipe has bypass pipe, and this bypass pipe connects said first steam pipe and said second steam pipe.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009164960 | 2009-07-13 | ||
| JP2009-164960 | 2009-07-13 | ||
| PCT/JP2010/056093 WO2011007604A1 (en) | 2009-07-13 | 2010-04-02 | Loop heat pump and startup method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102472597A true CN102472597A (en) | 2012-05-23 |
Family
ID=43449214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010800314070A Pending CN102472597A (en) | 2009-07-13 | 2010-04-02 | Loop heat pipe and startup method for the same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20120132402A1 (en) |
| JP (1) | JP5218660B2 (en) |
| CN (1) | CN102472597A (en) |
| WO (1) | WO2011007604A1 (en) |
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| CN113556916B (en) * | 2020-04-26 | 2023-02-28 | 台达电子企业管理（上海）有限公司 | Data processing apparatus |
| JP7394708B2 (en) | 2020-06-18 | 2023-12-08 | 新光電気工業株式会社 | loop heat pipe |
| CN113959244B (en) * | 2021-11-02 | 2022-08-02 | 山东大学 | Double-evaporator condenser loop heat pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349699A (en) * | 1986-08-15 | 1988-03-02 | Akutoronikusu Kk | Loop shaped heat pipe |
| US20020007937A1 (en) * | 2000-06-30 | 2002-01-24 | Kroliczek Edward J. | Phase control in the capillary evaporators |
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2010
- 2010-04-02 JP JP2011522752A patent/JP5218660B2/en not_active Expired - Fee Related
- 2010-04-02 WO PCT/JP2010/056093 patent/WO2011007604A1/en active Application Filing
- 2010-04-02 CN CN2010800314070A patent/CN102472597A/en active Pending
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2011
- 2011-12-13 US US13/323,973 patent/US20120132402A1/en not_active Abandoned
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6349699A (en) * | 1986-08-15 | 1988-03-02 | Akutoronikusu Kk | Loop shaped heat pipe |
| US20020007937A1 (en) * | 2000-06-30 | 2002-01-24 | Kroliczek Edward J. | Phase control in the capillary evaporators |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104066304A (en) * | 2013-03-22 | 2014-09-24 | 阿尔斯通运输股份有限公司 | Electric power converter for a rail vehicle |
| CN104066304B (en) * | 2013-03-22 | 2018-01-16 | 阿尔斯通运输科技公司 | Electric power transducer for rolling stock |
| CN105222630A (en) * | 2015-11-04 | 2016-01-06 | 天津商业大学 | A kind of flat type loop heat pipe |
| TWI614476B (en) * | 2016-07-29 | 2018-02-11 | 雙鴻科技股份有限公司 | Loop heat pipe and electronic device having the same |
| WO2018191834A1 (en) * | 2017-04-19 | 2018-10-25 | 北京空间飞行器总体设计部 | Flat loop heat pipe-based notebook computer cooling system |
| CN110243218A (en) * | 2018-02-06 | 2019-09-17 | 山东大学深圳研究院 | A kind of method of cell phone application control capillary wick temperature |
| CN110243218B (en) * | 2018-02-06 | 2020-07-14 | 山东大学深圳研究院 | Method for controlling temperature of capillary core by using mobile phone APP |
| CN110873998A (en) * | 2018-09-04 | 2020-03-10 | 精工爱普生株式会社 | Cooling device and projector |
| CN110873998B (en) * | 2018-09-04 | 2022-04-26 | 精工爱普生株式会社 | Cooling device and projector |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011007604A1 (en) | 2011-01-20 |
| US20120132402A1 (en) | 2012-05-31 |
| JPWO2011007604A1 (en) | 2012-12-27 |
| JP5218660B2 (en) | 2013-06-26 |
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