CN106482561A - A kind of multiple branch circuit heat pipe based on double sintering molding and preparation method thereof - Google Patents
A kind of multiple branch circuit heat pipe based on double sintering molding and preparation method thereof Download PDFInfo
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- CN106482561A CN106482561A CN201610932600.0A CN201610932600A CN106482561A CN 106482561 A CN106482561 A CN 106482561A CN 201610932600 A CN201610932600 A CN 201610932600A CN 106482561 A CN106482561 A CN 106482561A
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- shell
- branch circuit
- multiple branch
- joint
- sintering
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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
-
- 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
- F28D15/04—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 tubes having a capillary structure
-
- 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
- F28D15/0283—Means for filling or sealing heat pipes
-
- 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
- F28D15/04—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 tubes having a capillary structure
- F28D15/046—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 tubes having a capillary structure characterised by the material or the construction of the capillary structure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Powder Metallurgy (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a kind of multiple branch circuit heat pipe based on double sintering molding and preparation method thereof.This multiple branch circuit heat pipe is the space structure of vacuum sealing, including multiple branch circuit pipe joint（7）, first shell（1）, second shell（2）With sealing ring plug（12）.The multiple branch circuit heat pipe based on double sintering molding for the present invention can increase required heat pipe branch road quantity according to actual demand, has higher motility, can apply to the situation concentrating radiating or the multiple low-temperature receiver strengthening cooling of thermal source of multiple thermals source；The multiple branch circuit heat pipe based on double sintering molding for the present invention adopts sintered porous capillary wick, has the characteristics that the excellent heat transfer property of conventional sintering formula heat pipe and antigravity performance.The present invention prepares described multiple branch circuit heat pipe using double sintering molding, and preparation process is simple, large batch of can produce, adapts to the popularization and application in market.
Description
Technical field
The present invention relates to electronic radiation device field and in particular to a kind of multiple branch circuit heat pipe based on double sintering molding and
Its preparation method.
Background technology
In recent years since, the power with electronic device is increasing, and volume is less and less, leads to radiating to be still to be badly in need of solving
One of Important Problems.Heat pipe is a kind of biphase heat conduction with phase change element of high heat conductance, and it has, and heat transfer is fast, isothermal is good, property
Can stable, life-span length many advantages, such as.Based on the features such as high efficiency and good motility, hot pipe technique is still to solve electronics device
The effective means of part radiating, is widely used in the fields such as space flight and aviation technology, solar energy thermal control technology, waste heat recovery.
At present, most heat pipe is mainly used in the radiating to single source, and that is, a thermal source correspond to a low-temperature receiver.
With the continuous improvement of miniaturization and integrated level, in electronic equipment, the quantity of thermal source can get more and more, such as have GPU in computer
And multiple CPU, same pcb board are packaged with multiple high-power chips etc..For this frequent fever origin system, tradition generally adopts many
The heat sink conception of heat pipe.Although this traditional heat sink conception is simple and convenient, it takies, and volume is larger, and space availability ratio is relatively
Low it is difficult to meet the miniature demand of highly integrated device.On the other hand, flat-plate heat pipe relies on even heat flux and heat quickly to spread
The advantages of solve frequent fever source problem on paid attention to.The precondition that flat-plate heat pipe solves multi-heat source heat dissipation problem is that thermal source needs
At grade, it is not suitable for heat source position than relatively decentralized and spatial intersecting situation for distribution.And heat source position is divided
The complicated situation of cloth, loop circuit heat pipe can fully represent it and process the flexibility advantage of heat source position problem.Although loop circuit heat pipe
It is applied to the radiating of multi-heat source, but its complex structure, manufacture difficulty and cost are all higher.To sum up, the heat dissipation problem of multi-heat source is still
So do not provide really effective solution.
As can be seen here, in order to adapt to the development of the following miniaturization of electronic device, multi-heat source, it is badly in need of exploitation one kind and more has
Motility, the heat pipe of good heat transfer property is had to apply in the field of radiating of multi-heat source device, thus weakening heat problem to electricity
The impact of the reliability and stability of sub- device.
Content of the invention
The main object of the present invention is to be difficult to phenomenon on multi-heat source field of radiating for the flexible Application for conventional heat pipe, carries
Gone out a kind of higher capillary pressure, higher spatial utilization rate, high thermal conductivity, have flexibility based on double sintering become
Multiple branch circuit heat pipe of type and preparation method thereof, to solve conventional heat pipe the asking of low space utilization on multi-heat source field of radiating
Topic.
The present invention is achieved through the following technical solutions.
A kind of multiple branch circuit heat pipe based on double sintering molding, including multiple branch circuit pipe joint, the first shell, the second shell and
Sealing ring plug；
The two ends of described first shell are unclosed, and one end closing one end of described second shell is unclosed；First shell and second
Sintered porous capillary layer is all stained with the inwall of shell, and porous capillary layer extends and forms pipe at the unclosed end of shell
The outer convex joint of girdle shape；
Described multiple branch circuit pipe joint has a sealing cavity, has outside for connecting tube girdle shape in the sealing cavity of multiple branch circuit pipe joint
The ring-type indent capillary layer joint of convex joint, the hole of insertion is arranged at the interior recess bottom of ring-type indent capillary layer joint, and by passing through
The connection of through hole, forms multiple branch circuit ring-type indent capillary layer fittings；Two are had in the sealing cavity of described multiple branch circuit pipe joint
Secondary sintering capillary seal layer, described double sintering capillary seal layer is for filling Dew Point ring-type outer convex joint, the heart to be inserted
After ring-type indent capillary layer joint assembly connection, between the sealing cavity inwall of the outer convex joint of shell ring-type and multiple branch circuit pipe joint
The gap being formed；Above double sintering capillary seal layer, sealing ring plug is by empty with the sealing of multiple branch circuit pipe joint
Seal after cavity wall welding；
The spirogyrate of the outer convex joint of the shell ring-type of described first shell and the second shell and ring-type indent capillary layer joint indent
The concave shaped at place is complementary, realizes the Dock With Precision Position of the outer convex joint of shell ring-type and ring-type indent capillary layer joint；
Connected by first shell between two multiple branch circuit pipe joints, other joints of multiple branch circuit pipe joint are respectively had
One the second shell connects, and forms space structure；
All it is filled with liquid working substance in described first shell, the pipe of the second shell and in the sealing cavity of multiple branch circuit pipe joint；Institute
State the space structure that the multiple branch circuit heat pipe based on double sintering molding is vacuum sealing.
Further, the material of the sealing cavity of described first shell, the second shell and multiple branch circuit pipe joint is red copper, aluminum
Or rustless steel.
Further, the structure of described multiple branch circuit pipe joint includes Y type or T-shaped space structure, the angle between adjacent joint
Determined according to the situation that is actually used in.
Further, the joint quantity of described multiple branch circuit pipe joint is more than 3.
Further, described liquid working substance is deionized water, methanol or ethanol.
Further, the negative pressure of described vacuum is 0.0013 ~ 1.3Pa.
Further, the capillary of described porous capillary layer, ring-type indent capillary layer joint and double sintering capillary seal layer
Porosity is 40% ~ 70%.
A kind of preparation method of the multiple branch circuit heat pipe based on double sintering molding described in preparation any of the above-described, including such as
Lower step：
（1）Prepare the sintering plug for molding, including the first sintering plug and the second sintering plug；For fixing graphite
Set, including the first graphite cannula, the second graphite cannula and the 3rd graphite cannula；By the first shell, the second shell, multiple branch circuit pipe joint close
Envelope cavity, sealing ring plug and sintering plug cleaning are deoiled；
（2）First shell is fixed on the first graphite cannula, then the center that the first sintering plug is inserted the first shell goes directly the
One graphite cannula is carried out to heart fixing assembling；The second graphite cannula on the other end set of the first shell again；First sintering plug with
First graphite cannula, the first sintering plug and the first shell and the first sintering plug and the gap filler metal powder with the second graphite cannula
End, until concordant with the bottom face of the second graphite cannula；After high temperature sintering, cooling, take graphite cannula away and extract sintering plug out, obtain
First shell of porous capillary layer has been adhered on inner wall of tube shell；
（3）Second shell is fixed on the first graphite cannula, then the center through first the first sintering plug being inserted the second shell
Graphite cannula is carried out to heart fixing assembling；Between the first sintering plug and the second shell and the first sintering plug and the first graphite cannula
Gap filler metal powder, until concordant with the second shell upper surface；After high temperature sintering, cooling, take graphite cannula away and extract sintering out
Plug, obtains the second shell having adhered to porous capillary layer on inner wall of tube shell；
（4）, in addition to one is used for filler metal powder, remaining joint is with the 3rd stone for the joint of the sealing cavity of multiple branch circuit pipe joint
Ink set fixing assembling, then run through graphite cannula with the second sintering plug, the joint for filler metal powder is inserted directly into one
Second sintering plug, the center splicing of all of second sintering sealing cavity in multiple branch circuit pipe joint for the plug；In multiple branch circuit
Filler metal powder in the sealing cavity of pipe joint, then pressed in the joint for filler metal powder with the 3rd graphite cannula
Real sealing；After high temperature sintering, cooling, take graphite cannula away and extract sintering plug out, obtain intracavity and interconnect ring-type indent hair
The multiple branch circuit pipe joint of sub-layers joint；
（5）The outer convex joint of the shell ring-type of the first shell wherein one end that sintering is obtained embeds in the ring-type of multiple branch circuit pipe joint
Recessed capillary layer joint carries out the heart is assembled, and empty with the sealing of multiple branch circuit pipe joint in the outer convex joint of shell ring-type of the first shell
The gap filler metal powder of cavity wall, with the compacting of sealing ring plug, welded seal above the metal dust of filling；Sintering
The second shell obtaining is connected with multiple branch circuit pipe joint in the same way, obtains space structure multiple branch circuit pipe, after high temperature sintering,
Obtain double sintering capillary seal layer（11）, cooling；Do evacuation in the end of second shell to prepare, other second pipes
The end of shell is closed, and finally carries out evacuation, perfusion liquid working substance, welded seal, obtains described being based on double sintering
The multiple branch circuit heat pipe of molding.
Further, step（1）In, described first graphite cannula is three shoulder hole graphite sleeve of indent not insertion, and the
The diameter of one shoulder hole is equal to the external diameter of the first shell, and the diameter of the second shoulder hole is equal to the external diameter of the outer convex joint of shell ring-type,
The diameter of the 3rd shoulder hole is equal to the diameter of the first sintering plug.
Further, step（1）In, described second graphite cannula is a shoulder hole graphite sleeve of indent insertion, and ladder
The diameter in hole is equal with the external diameter of the first shell, and the diameter of through hole is equal with the external diameter of the outer convex joint of shell ring-type.
Further, step（1）In, described 3rd graphite cannula is and ring-type indent capillary layer joint corresponding evagination three rank
Terraced graphite plug, and the diameter of the first ladder is equal to the internal diameter of the interior recess of ring-type indent capillary layer joint, the diameter of the second ladder
Equal to the intracavity footpath of the sealing cavity seam of multiple branch circuit pipe joint, the sealing with diameter greater than multiple branch circuit pipe joint of the 3rd ladder
Chamber external diameter at cavity interface.
Further, step（1）In, the material of described first sintering plug and the second sintering plug is rustless steel, Ni-based
Alloy or graphite.
Further, step（1）In, described first sintering plug length is more than the length of the first shell and the second shell,
Diameter is less than the diameter of the first shell and the second shell.
Further, step（1）In, described second sintering plug is longer than each joint of the sealing cavity of multiple branch circuit pipe joint
Length, diameter is less than the diameter of each joint of sealing cavity of multiple branch circuit pipe joint.
Further, step（1）In, each equal diameters sintering plug.
Further, step（4）In, the particle diameter of described metal dust is 25 ~ 100 μm.
Further, step（2）~（5）In, described high temperature sintering is 850-950 DEG C of sintering 1-3 under protective gas atmosphere
Hour.
Further, described protective gas is nitrogen, argon or hydrogen.
Further, step（2）、（3）、（5）In, the particle size range of described metal dust is 50 ~ 125 μm.
Further, step（2）~（5）Described in metal dust be copper metal powder, aluminum metal powder or nickel alloy powder
End.
With respect to prior art, the present invention has advantages below and beneficial effect：
（1）Different from conventional heat pipe, the present invention can be increased according to actual demand based on the multiple branch circuit heat pipe of double sintering molding
Required heat pipe branch road quantity, has higher motility, and the concentration radiating or the thermal source that can apply to multiple thermals source are multiple
The situation of low-temperature receiver strengthening cooling.
（2）The multiple branch circuit heat pipe based on double sintering molding of the present invention, because public one or more branch road is passed
Heat, can greatly reduce the required space of radiating, adapt to the demand for development of the miniaturization multi-heat source of future electronic device.
（3）The multiple branch circuit heat pipe based on double sintering molding of the present invention adopts sintered porous capillary wick, has tradition burning
The excellent heat transfer property of eliminant heat pipe and the feature of antigravity performance.
（4）Preparation process of the present invention is simple, large batch of can produce, adapts to the popularization and application in market.
Brief description
Fig. 1 is the sectional view based on the double-Y shaped multiple branch circuit heat pipe of double sintering molding for the present invention.
Fig. 2 is the sectional view of the first shell in embodiment 1.
Fig. 3 is the sectional view of the first shell assembling process in embodiment 1.
Fig. 4 is the sectional view of the first shell filler metal powder process in embodiment 1.
Fig. 5 is the sectional view after the completion of the first shell sintering in embodiment 1.
Fig. 6 is the sectional view of the second shell in embodiment 1.
Fig. 7 is the sectional view of the second shell assembling process in embodiment 1.
Fig. 8 is the sectional view of the second shell filler metal powder process in embodiment 1.
Fig. 9 is the sectional view after the completion of the second shell sintering in embodiment 1.
Figure 10 is the sectional view of the sealing cavity of multiple branch circuit pipe joint in embodiment 1.
Figure 11 is that the sealing cavity of multiple branch circuit pipe joint in embodiment 1 was installed with the 3rd graphite cannula and the second sintering plug
The sectional view of journey.
Figure 12 is that in the sealing cavity of multiple branch circuit pipe joint in embodiment 1, filler metal powder and the installation of the 3rd graphite cannula are close
The sectional view of envelope.
Figure 13 is the sectional view of y-type structure multiple branch circuit pipe joint in embodiment 1.
Figure 14 is the sectional view of the grafting assembling process of the first shell and multiple branch circuit pipe joint in embodiment 1.
Figure 15 is the sealing cavity inwall with multiple branch circuit pipe joint for the outer convex joint of shell ring-type of the first shell in embodiment 1
Gap filler metal powder process sectional view.
Figure 16 is the sectional view of erecting and welding sealing ring plug process above secondary filler metal powder in embodiment 1.
In accompanying drawing：1- first shell；2- second shell；3- first graphite cannula；4- second graphite cannula；5- first sinters core
Rod；6- porous capillary layer；7- multiple branch circuit pipe joint；8- the 3rd graphite cannula；9- second sinters plug；10- porous capillary layer connects
Head；11- double sintering porous capillary layer；12- sealing ring plug.
Specific embodiment
With specific embodiment, the goal of the invention of the present invention is described in further detail below in conjunction with the accompanying drawings, but the present invention
Embodiment be not therefore defined in following examples.
A kind of present invention multiple branch circuit pipe joint is 3 joints, the cuing open of the double-Y shaped multiple branch circuit heat pipe based on double sintering molding
View is as shown in figure 1, include multiple branch circuit pipe joint 7, the first shell 1, the second shell 2, sealing ring plug 12；
The two ends of the first shell 1 are unclosed, and one end closing one end of the second shell 2 is unclosed；First shell 1 and the second shell 2
Inwall on be all stained with sintered porous capillary layer 6, and porous capillary layer 6 extends and forms shell at the unclosed end of shell
The outer convex joint of ring-type；
Multiple branch circuit pipe joint 7 has a sealing cavity, has for connecting tube girdle shape evagination in the sealing cavity of multiple branch circuit pipe joint 7
The ring-type indent capillary layer joint 10 of joint, the hole of insertion is arranged at the interior recess bottom of ring-type indent capillary layer joint 10, and passes through
The connection of through hole, forms multiple branch circuit ring-type indent capillary layer fittings；Have secondary in the sealing cavity of multiple branch circuit pipe joint 7
Sintering capillary seal layer 11, double sintering capillary seal layer 11 is for filling the outer convex joint of Dew Point ring-type to heart insertion ring
After shape indent capillary layer joint 10 assembly connection, the sealing cavity inwall of the outer convex joint of shell ring-type and multiple branch circuit pipe joint 7
Between formed gap；Above double sintering capillary seal layer 11, sealing ring plug 12 by with multiple branch circuit pipe joint 7
Seal after the welding of sealing cavity inwall；
The spirogyrate of the outer convex joint of the shell ring-type of the first shell 1 and the second shell 2 and ring-type indent capillary layer joint 10 indent
The concave shaped at place is complementary, realizes the Dock With Precision Position of the outer convex joint of shell ring-type and ring-type indent capillary layer joint 10；
The capillary porosity rate of porous capillary layer 6, ring-type indent capillary layer joint 10 and double sintering capillary seal layer 11 be 40% ~
70%；
Connected, on other joints of multiple branch circuit pipe joint 7 by first shell 1 between two multiple branch circuit pipe joints 7
Respectively there is second shell 2 to connect, form double-Y shaped space structure；
All it is filled with liquid working substance in first shell 1, the pipe of the second shell 2 and in the sealing cavity of multiple branch circuit pipe joint 7；Branched
The structure of road pipe joint 7 is Y type space structure；The joint quantity of multiple branch circuit pipe joint 7 is 3, and between adjacent joint, angle is
120°；Double-Y shaped multiple branch circuit heat pipe based on double sintering molding is the closing space structure of 0.0013 ~ 1.3Pa for negative pressure of vacuum.
Embodiment 1
Prepare above-mentioned a kind of be 3 joints based on the multiple branch circuit pipe joint of double sintering molding, double-Y shaped space multiple branch circuit heat pipe
's：
（1）Prepare the sintering plug for molding, including the first sintering plug 5 and the second sintering plug 9；For fixing graphite
Set, including the first graphite cannula 3, the second graphite cannula 4 and the 3rd graphite cannula 8；First shell 1, the second shell 2, multiple branch circuit pipe are connect
7 sealing cavity, sealing ring plug 12 and sintering plug cleaning are deoiled；
First shell 1, the second shell 2, the material of the sealing cavity of multiple branch circuit pipe joint 7 are red copper；
The sectional view of the first shell 1 is as shown in Figure 2；
First graphite cannula is three shoulder hole graphite sleeve of indent not insertion, and the diameter of the first shoulder hole is equal to the first shell 1
External diameter, the diameter of the second shoulder hole is equal to the external diameter of the outer convex joint of shell ring-type, and the diameter of the 3rd shoulder hole is equal to the first burning
The diameter of knot plug；Described second graphite cannula is a shoulder hole graphite sleeve of indent insertion, and the diameter of shoulder hole and first
The external diameter of shell 1 is equal, and the diameter of through hole is equal with the external diameter of the outer convex joint of shell ring-type；Described 3rd graphite cannula is and ring
The corresponding evagination three ladder graphite plug of shape indent capillary layer joint 10, and the diameter of the first ladder connects equal to ring-type indent capillary layer
The internal diameter of 10 interior recess, the diameter of the second ladder is equal to the intracavity footpath of the sealing cavity seam of multiple branch circuit pipe joint 7, the
The chamber external diameter of the sealing cavity seam with diameter greater than multiple branch circuit pipe joint 7 of three ladders.
The material of the first sintering plug and the second sintering plug is graphite；Described first sintering plug length is more than first pipe
Shell 1 and the length of the second shell 2, diameter is less than the diameter of the first shell 1 and the second shell 2；Described second sintering plug is longer than
Each joint length of the sealing cavity of multiple branch circuit pipe joint 7, diameter is less than each joint of sealing cavity of multiple branch circuit pipe joint 7
Diameter；Each equal diameters sintering plug.
（2）First shell 1 is fixed on the first graphite cannula, then the first sintering plug is inserted the center of the first shell 1
Through first graphite cannula carries out to heart fixing assembling, and the sectional view of assembling process is as shown in Figure 3；Another in the first shell 1 again
End puts the second graphite cannula；In the first sintering plug and the first graphite cannula, the first sintering plug and the first shell 1 and the first sintering
The red copper metal dust of 75-100 μ m size is filled in the gap of plug and the second graphite cannula, until the bottom with the second graphite cannula
End face is concordant, and the sectional view of filler metal powder process is as shown in Figure 4；In a hydrogen atmosphere, 900 DEG C of high temperature sinterings 2 hours, cold
But to room temperature, take graphite cannula away and extract sintering plug out, obtaining having adhered to porosity on inner wall of tube shell is 60% porous capillary layer 6
The first shell 1, the sectional view of the first shell 1 after sintering is as shown in Figure 5；
（3）The sectional view of the second shell 2 is as shown in Figure 6；Second shell 2 is fixed on the first graphite cannula, then first is sintered core
The carrying out of through first graphite cannula in center of rod insertion the second shell 2 is to heart fixing assembling, sectional view such as Fig. 7 of assembling process
Shown；Fill 75-100 μm of model in the gap of the first sintering plug and the second shell 2 and the first sintering plug and the first graphite cannula
Enclose the red copper metal dust of size, until concordant with the second shell 2 upper surface, the sectional view of filling process is as shown in Figure 8；In hydrogen
Under gas atmosphere, 900 DEG C of high temperature sinterings 2 hours, it is cooled to room temperature, take graphite cannula away and extract sintering plug out, obtain inner wall of tube shell
On adhered to the second shell 2 that porosity is 60% porous capillary layer 6, the sectional view of the second shell 2 after sintering is as shown in Figure 9；
（4）The sectional view of the sealing cavity of multiple branch circuit pipe joint 7 is as shown in Figure 10；With the 3rd graphite cannula 8 by dress is fixed to the heart
Fit over sealing cavity two joints therein of multiple branch circuit pipe joint 7, become between three second sintering plugs 9 120 ° be arranged on many
The center of the sealing cavity of branch pipe joint 7, the sectional view of assembling is as shown in figure 11；By the red copper gold for 50-75 μm for the particle diameter
Belong to powder to be filled in the sealing cavity of multiple branch circuit pipe joint 7, then carry out compacting envelope with the 3rd graphite cannula 8 from the 3rd joint
Close, the sectional view of filling process is as shown in figure 12；In a hydrogen atmosphere, 900 DEG C of high temperature sinterings 2 hours, are cooled to room temperature, take away
Graphite cannula and extraction sintering plug, obtaining intracavity has the Y of the ring-type indent capillary layer joint 10 that the porosity interconnecting is 50%
Type structure multiple branch circuit pipe joint；The sectional view of y-type structure multiple branch circuit pipe joint is as shown in figure 13；
（5）The outer convex joint of the shell ring-type of the first shell 1 wherein one end that sintering is obtained embeds the ring-type of multiple branch circuit pipe joint 7
Indent capillary layer joint 10 carries out the heart is assembled, and the sectional view of assembling process is as shown in figure 14；And the shell ring in the first shell 1
The red copper metal powder of 50-75 μ m size is filled in the gap of the sealing cavity inwall of the outer convex joint of shape and multiple branch circuit pipe joint 7
End, filling process is as shown in figure 15；It is compacted with sealing ring plug 12 above the metal dust of filling, welded seal, welding
Process is as shown in figure 16；Sinter the second shell 2 obtaining to be connected with multiple branch circuit pipe joint 7 in the same way, obtain double-Y shaped sky
Between structure multiple branch circuit pipe, under hydrogen atmosphere, 900 DEG C of high temperature sinterings, after 2 hours, are cooled to room temperature, obtain double sintering capillary close
Sealing 11；Do evacuation in the end of second shell 2 to prepare, the end of other the second shells 2 is closed, finally
Carry out taking out the vacuum of 0.13Pa negative pressure, irrigate deionized water liquid working substance, welded seal, obtain double based on double sintering molding
Y type space structure multiple branch circuit heat pipe.
Prepared double-Y shaped space structure multiple branch circuit adopting heat pipes for heat transfer excellent performance, can run in antigravity environment, for frequent fever
The radiating of source electronic device, saves 78% heat-dissipating space, beneficial to the development of miniaturization.
Embodiment 2
Prepare above-mentioned a kind of be 3 joints based on the multiple branch circuit pipe joint of double sintering molding, double-Y shaped space multiple branch circuit heat pipe
's：
（1）Prepare the sintering plug for molding, including the first sintering plug 5 and the second sintering plug 9；For fixing graphite
Set, including the first graphite cannula 3, the second graphite cannula 4 and the 3rd graphite cannula 8；First shell 1, the second shell 2, multiple branch circuit pipe are connect
7 sealing cavity, sealing ring plug 12 and sintering plug cleaning are deoiled；
First shell 1, the second shell 2, the material of the sealing cavity of multiple branch circuit pipe joint 7 are red copper；
The sectional view of the first shell 1 is as shown in Figure 2；
First graphite cannula is three shoulder hole graphite sleeve of indent not insertion, and the diameter of the first shoulder hole is equal to the first shell 1
External diameter, the diameter of the second shoulder hole is equal to the external diameter of the outer convex joint of shell ring-type, and the diameter of the 3rd shoulder hole is equal to the first burning
The diameter of knot plug；Described second graphite cannula is a shoulder hole graphite sleeve of indent insertion, and the diameter of shoulder hole and first
The external diameter of shell 1 is equal, and the diameter of through hole is equal with the external diameter of the outer convex joint of shell ring-type；Described 3rd graphite cannula is and ring
The corresponding evagination three ladder graphite plug of shape indent capillary layer joint 10, and the diameter of the first ladder connects equal to ring-type indent capillary layer
The internal diameter of 10 interior recess, the diameter of the second ladder is equal to the intracavity footpath of the sealing cavity seam of multiple branch circuit pipe joint 7, the
The chamber external diameter of the sealing cavity seam with diameter greater than multiple branch circuit pipe joint 7 of three ladders.
The material of the first sintering plug and the second sintering plug is graphite；Described first sintering plug length is more than first pipe
Shell 1 and the length of the second shell 2, diameter is less than the diameter of the first shell 1 and the second shell 2；Described second sintering plug is longer than
Each joint length of the sealing cavity of multiple branch circuit pipe joint 7, diameter is less than each joint of sealing cavity of multiple branch circuit pipe joint 7
Diameter；Each equal diameters sintering plug.
（2）First shell 1 is fixed on the first graphite cannula, then the first sintering plug is inserted the center of the first shell 1
Through first graphite cannula carries out to heart fixing assembling, and the sectional view of assembling process is as shown in Figure 3；Another in the first shell 1 again
End puts the second graphite cannula；In the first sintering plug and the first graphite cannula, the first sintering plug and the first shell 1 and the first sintering
The red copper metal dust of 100-125 μ m size is filled in the gap of plug and the second graphite cannula, until with the second graphite cannula
Bottom face is concordant, and the sectional view of filler metal powder process is as shown in Figure 4；In a hydrogen atmosphere, 950 DEG C of high temperature sinterings 1 hour,
It is cooled to room temperature, takes graphite cannula away and extract sintering plug out, obtaining having adhered to porosity on inner wall of tube shell is 70% porous capillary layer
6 the first shell 1, the sectional view of the first shell 1 after sintering is as shown in Figure 5；
（3）The sectional view of the second shell 2 is as shown in Figure 6；Second shell 2 is fixed on the first graphite cannula, then first is sintered core
The carrying out of through first graphite cannula in center of rod insertion the second shell 2 is to heart fixing assembling, sectional view such as Fig. 7 of assembling process
Shown；Fill 100-125 μm of model in the gap of the first sintering plug and the second shell 2 and the first sintering plug and the first graphite cannula
Enclose the red copper metal dust of size, until concordant with the second shell 2 upper surface, the sectional view of filling process is as shown in Figure 8；In hydrogen
Under gas atmosphere, 950 DEG C of high temperature sinterings 1 hour, it is cooled to room temperature, take graphite cannula away and extract sintering plug out, obtain inner wall of tube shell
On adhered to the second shell 2 that porosity is 70% porous capillary layer 6, the sectional view of the second shell 2 after sintering is as shown in Figure 9；
（4）The sectional view of the sealing cavity of multiple branch circuit pipe joint 7 is as shown in Figure 10；With the 3rd graphite cannula 8 by dress is fixed to the heart
Fit over sealing cavity two joints therein of multiple branch circuit pipe joint 7, become between three second sintering plugs 9 120 ° be arranged on many
The center of the sealing cavity of branch pipe joint 7, the sectional view of assembling is as shown in figure 11；By the red copper gold for 25-50 μm for the particle diameter
Belong to powder to be filled in the sealing cavity of multiple branch circuit pipe joint 7, then carry out compacting envelope with the 3rd graphite cannula 8 from the 3rd joint
Close, the sectional view of filling process is as shown in figure 12；In a hydrogen atmosphere, 950 DEG C of high temperature sinterings 1 hour, are cooled to room temperature, take away
Graphite cannula and extraction sintering plug, obtaining intracavity has the Y of the ring-type indent capillary layer joint 10 that the porosity interconnecting is 40%
Type structure multiple branch circuit pipe joint；The sectional view of y-type structure multiple branch circuit pipe joint is as shown in figure 13；
（5）The outer convex joint of the shell ring-type of the first shell 1 wherein one end that sintering is obtained embeds the ring-type of multiple branch circuit pipe joint 7
Indent capillary layer joint 10 carries out the heart is assembled, and the sectional view of assembling process is as shown in figure 14；And the shell ring in the first shell 1
The red copper metal of 100-125 μ m size is filled in the gap of the sealing cavity inwall of the outer convex joint of shape and multiple branch circuit pipe joint 7
Powder, filling process is as shown in figure 15；It is compacted with sealing ring plug 12 above the metal dust of filling, welded seal, weldering
Termination process is as shown in figure 16；Sinter the second shell 2 obtaining to be connected with multiple branch circuit pipe joint 7 in the same way, obtain double-Y shaped
Space structure multiple branch circuit pipe, under hydrogen atmosphere, 950 DEG C of high temperature sinterings, after 1 hour, are cooled to room temperature, obtain double sintering capillary
Sealant 11；Do evacuation in the end of second shell 2 to prepare, the end of other the second shells 2 is closed,
Carry out afterwards taking out the vacuum of 0.0013Pa negative pressure, irrigate deionized water liquid working substance, welded seal, obtain based on double sintering molding
Double-Y shaped space structure multiple branch circuit heat pipe.
Prepared double-Y shaped space structure multiple branch circuit adopting heat pipes for heat transfer excellent performance, can run in antigravity environment, for frequent fever
The radiating of source electronic device, saves 77% heat-dissipating space, beneficial to the development of miniaturization.
Embodiment 3
Prepare above-mentioned a kind of be 3 joints based on the multiple branch circuit pipe joint of double sintering molding, double-Y shaped space multiple branch circuit heat pipe
's：
（1）Prepare the sintering plug for molding, including the first sintering plug 5 and the second sintering plug 9；For fixing graphite
Set, including the first graphite cannula 3, the second graphite cannula 4 and the 3rd graphite cannula 8；First shell 1, the second shell 2, multiple branch circuit pipe are connect
7 sealing cavity, sealing ring plug 12 and sintering plug cleaning are deoiled；
First shell 1, the second shell 2, the material of the sealing cavity of multiple branch circuit pipe joint 7 are red copper；
The sectional view of the first shell 1 is as shown in Figure 2；
First graphite cannula is three shoulder hole graphite sleeve of indent not insertion, and the diameter of the first shoulder hole is equal to the first shell 1
External diameter, the diameter of the second shoulder hole is equal to the external diameter of the outer convex joint of shell ring-type, and the diameter of the 3rd shoulder hole is equal to the first burning
The diameter of knot plug；Described second graphite cannula is a shoulder hole graphite sleeve of indent insertion, and the diameter of shoulder hole and first
The external diameter of shell 1 is equal, and the diameter of through hole is equal with the external diameter of the outer convex joint of shell ring-type；Described 3rd graphite cannula is and ring
The corresponding evagination three ladder graphite plug of shape indent capillary layer joint 10, and the diameter of the first ladder connects equal to ring-type indent capillary layer
The internal diameter of 10 interior recess, the diameter of the second ladder is equal to the intracavity footpath of the sealing cavity seam of multiple branch circuit pipe joint 7, the
The chamber external diameter of the sealing cavity seam with diameter greater than multiple branch circuit pipe joint 7 of three ladders.
The material of the first sintering plug and the second sintering plug is graphite；Described first sintering plug length is more than first pipe
Shell 1 and the length of the second shell 2, diameter is less than the diameter of the first shell 1 and the second shell 2；Described second sintering plug is longer than
Each joint length of the sealing cavity of multiple branch circuit pipe joint 7, diameter is less than each joint of sealing cavity of multiple branch circuit pipe joint 7
Diameter；Each equal diameters sintering plug.
（2）First shell 1 is fixed on the first graphite cannula, then the first sintering plug is inserted the center of the first shell 1
Through first graphite cannula carries out to heart fixing assembling, and the sectional view of assembling process is as shown in Figure 3；Another in the first shell 1 again
End puts the second graphite cannula；In the first sintering plug and the first graphite cannula, the first sintering plug and the first shell 1 and the first sintering
The red copper metal dust of 50-75 μ m size is filled in the gap of plug and the second graphite cannula, until the bottom with the second graphite cannula
End face is concordant, and the sectional view of filler metal powder process is as shown in Figure 4；In a hydrogen atmosphere, 850 DEG C of high temperature sinterings 3 hours, cold
But to room temperature, take graphite cannula away and extract sintering plug out, obtaining having adhered to porosity on inner wall of tube shell is 40% porous capillary layer 6
The first shell 1, the sectional view of the first shell 1 after sintering is as shown in Figure 5；
（3）The sectional view of the second shell 2 is as shown in Figure 6；Second shell 2 is fixed on the first graphite cannula, then first is sintered core
The carrying out of through first graphite cannula in center of rod insertion the second shell 2 is to heart fixing assembling, sectional view such as Fig. 7 of assembling process
Shown；Gap filling 50-75 μ m in the first sintering plug and the second shell 2 and the first sintering plug and the first graphite cannula
The red copper metal dust of size, until concordant with the second shell 2 upper surface, the sectional view of filling process is as shown in Figure 8；In hydrogen
Under atmosphere, 850 DEG C of high temperature sinterings 3 hours, it is cooled to room temperature, take graphite cannula away and extract sintering plug out, obtain on inner wall of tube shell
Adhere to the second shell 2 that porosity is 50% porous capillary layer 6, the sectional view of the second shell 2 after sintering is as shown in Figure 9；
（4）The sectional view of the sealing cavity of multiple branch circuit pipe joint 7 is as shown in Figure 10；With the 3rd graphite cannula 8 by dress is fixed to the heart
Fit over sealing cavity two joints therein of multiple branch circuit pipe joint 7, become between three second sintering plugs 9 120 ° be arranged on many
The center of the sealing cavity of branch pipe joint 7, the sectional view of assembling is as shown in figure 11；By the red copper gold for 75-100 μm for the particle diameter
Belong to powder to be filled in the sealing cavity of multiple branch circuit pipe joint 7, then carry out compacting envelope with the 3rd graphite cannula 8 from the 3rd joint
Close, the sectional view of filling process is as shown in figure 12；In a hydrogen atmosphere, 850 DEG C of high temperature sinterings 3 hours, are cooled to room temperature, take away
Graphite cannula and extraction sintering plug, obtaining intracavity has the Y of the ring-type indent capillary layer joint 10 that the porosity interconnecting is 60%
Type structure multiple branch circuit pipe joint；The sectional view of y-type structure multiple branch circuit pipe joint is as shown in figure 13；
（5）The outer convex joint of the shell ring-type of the first shell 1 wherein one end that sintering is obtained embeds the ring-type of multiple branch circuit pipe joint 7
Indent capillary layer joint 10 carries out the heart is assembled, and the sectional view of assembling process is as shown in figure 14；And the shell ring in the first shell 1
The red copper metal powder of 75-100 μ m size is filled in the gap of the sealing cavity inwall of the outer convex joint of shape and multiple branch circuit pipe joint 7
End, filling process is as shown in figure 15；It is compacted with sealing ring plug 12 above the metal dust of filling, welded seal, welding
Process is as shown in figure 16；Sinter the second shell 2 obtaining to be connected with multiple branch circuit pipe joint 7 in the same way, obtain double-Y shaped sky
Between structure multiple branch circuit pipe, under hydrogen atmosphere, 850 DEG C of high temperature sinterings, after 3 hours, are cooled to room temperature, obtain double sintering capillary close
Sealing 11；Do evacuation in the end of second shell 2 to prepare, the end of other the second shells 2 is closed, finally
Carry out taking out the vacuum of 1.3Pa negative pressure, irrigate deionized water liquid working substance, welded seal, obtain the double Y based on double sintering molding
Type space structure multiple branch circuit heat pipe.
Prepared double-Y shaped space structure multiple branch circuit adopting heat pipes for heat transfer excellent performance, can run in antigravity environment, for frequent fever
The radiating of source electronic device, saves 75% heat-dissipating space, beneficial to the development of miniaturization.
The above embodiment of the present invention is only intended to clearly illustrate example of the present invention, and is not to the present invention
Embodiment restriction.For those of ordinary skill in the field, can also make on the basis of the above description
The change of other multi-forms or variation.There is no need to be exhaustive to all of embodiment.All the present invention's
Any modification, equivalent and improvement made within spirit and principle etc., should be included in the protection of the claims in the present invention
Within the scope of.
Claims (10)
1. a kind of multiple branch circuit heat pipe based on double sintering molding is it is characterised in that include multiple branch circuit pipe joint（7）, first pipe
Shell（1）, the second shell（2）With sealing ring plug（12）；
Described first shell（1）Two ends unclosed, described second shell（2）One end closing one end unclosed；First shell
（1）With the second shell（2）Inwall on be all stained with sintered porous capillary layer（6）, and porous capillary layer（6）In shell not
Blind end extends and forms the outer convex joint of shell ring-type；
Described multiple branch circuit pipe joint（7）There are a sealing cavity, multiple branch circuit pipe joint（7）Sealing cavity in have for connecting tube shell
The ring-type indent capillary layer joint of the outer convex joint of ring-type（10）, ring-type indent capillary layer joint（10）Interior recess bottom have insertion
Hole, and by the connection of through hole, form multiple branch circuit ring-type indent capillary layer fittings；Described multiple branch circuit pipe joint（7）'s
There is double sintering capillary seal layer in sealing cavity（11）, described double sintering capillary seal layer（11）It is for filling seal pipe
The outer convex joint of girdle shape inserts ring-type indent capillary layer joint to the heart（10）And after assembly connection, the outer convex joint of shell ring-type with many
Branch pipe joint（7）Sealing cavity inwall between formed gap；In double sintering capillary seal layer（11）Top, sealing ring
Shape plug（12）By with multiple branch circuit pipe joint（7）Sealing cavity inwall welding after seal；
Described first shell（1）With the second shell（2）The spirogyrate of the outer convex joint of shell ring-type connect with ring-type indent capillary layer
Head（10）The concave shaped of interior recess is complementary, realizes the outer convex joint of shell ring-type and ring-type indent capillary layer joint（10）Precisely right
Connect；
Two multiple branch circuit pipe joints（7）Between pass through first shell（1）Connected, multiple branch circuit pipe joint（7）Other
One the second shell is respectively had on joint（2）Connect, form space structure；
Described first shell（1）, the second shell（2）Pipe in and multiple branch circuit pipe joint（7）Sealing cavity in be all filled with liquid
Body working medium；The described multiple branch circuit heat pipe based on double sintering molding is the space structure of vacuum sealing.
2. a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 1 is it is characterised in that described first
Shell（1）, the second shell（2）With multiple branch circuit pipe joint（7）The material of sealing cavity be red copper, aluminum or rustless steel；Described many
Branch pipe joint（7）Joint quantity be more than 3.
3. a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 1 is it is characterised in that described branched
Road pipe joint（7）Structure include Y type or T-shaped space structure, the angle between adjacent joint according to practical situations determine；Institute
Stating liquid working substance is deionized water, methanol or ethanol；The negative pressure of described vacuum is 0.0013 ~ 1.3Pa；Described porous capillary layer
（6）, ring-type indent capillary layer joint（10）With double sintering capillary seal layer（11）Capillary porosity rate be 40% ~ 70%.
4. the preparation method of a kind of multiple branch circuit heat pipe based on double sintering molding described in any one of claim 1 ~ 3, it is special
Levy and be, comprise the steps：
（1）Prepare the sintering plug for molding, including the first sintering plug and the second sintering plug；For fixing graphite
Set, including the first graphite cannula, the second graphite cannula and the 3rd graphite cannula；By the first shell（1）, the second shell（2）, multiple branch circuit pipe connects
Head（7）Sealing cavity, sealing ring plug（12）Deoil with sintering plug cleaning；
（2）First shell（1）It is fixed on the first graphite cannula, then the first sintering plug is inserted the first shell（1）Center
Through first graphite cannula is carried out to heart fixing assembling；Again in the first shell（1）The other end put the second graphite cannula；In the first burning
Knot plug and the first graphite cannula, the first sintering plug and the first shell（1）And first sintering plug and the second graphite cannula gap
Filler metal powder, until concordant with the bottom face of the second graphite cannula；After high temperature sintering, cooling, take graphite cannula away and extract burning out
Knot plug, obtains having adhered to porous capillary layer on inner wall of tube shell（6）The first shell（1）；
（3）Second shell（2）It is fixed on the first graphite cannula, then the first sintering plug is inserted the second shell（2）Center straight
Reach the first graphite cannula to carry out to heart fixing assembling；In the first sintering plug and the second shell（2）And first sintering plug and first
The gap filler metal powder of graphite cannula, until with the second shell（2）Upper surface is concordant；After high temperature sintering, cooling, take graphite away
Set and extraction sintering plug, obtain having adhered to porous capillary layer on inner wall of tube shell（6）The second shell（2）；
（4）Multiple branch circuit pipe joint（7）Sealing cavity joint in addition to one is used for filler metal powder, remaining joint is with the 3rd
Graphite cannula fixing assembling, then run through graphite cannula with the second sintering plug, the joint for filler metal powder is inserted directly into one
Individual second sintering plug, all of second sintering plug is in multiple branch circuit pipe joint（7）Sealing cavity center splicing；Many
Branch pipe joint（7）Sealing cavity in filler metal powder, then with the 3rd graphite cannula for filler metal powder
Joint compacting sealing；After high temperature sintering, cooling, take graphite cannula away and extract sintering plug out, obtain intracavity and interconnect ring
Shape indent capillary layer joint（10）Multiple branch circuit pipe joint（7）；
（5）The first shell that sintering is obtained（1）The outer convex joint of shell ring-type of wherein one end embeds multiple branch circuit pipe joint（7）'s
Ring-type indent capillary layer joint（10）Carry out the heart is assembled, and in the first shell（1）The outer convex joint of shell ring-type and multiple branch circuit
Pipe joint（7）Sealing cavity inwall gap filler metal powder, filling metal dust above use sealing ring plug
（12）Compacting, welded seal；Sinter the second shell obtaining（2）In the same way with multiple branch circuit pipe joint（7）Connect, obtain
Space structure multiple branch circuit pipe；After high temperature sintering, obtain double sintering capillary seal layer（11）, cooling；In second shell（2）
End do evacuation prepare, other second shells（2）End closed, finally carry out evacuation, perfusion liquid
Working medium, welded seal, obtain the described multiple branch circuit heat pipe based on double sintering molding.
5. the preparation method of a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 4, its feature exists
In step（1）In, described first graphite cannula is three shoulder hole graphite sleeve of indent not insertion, and the diameter of the first shoulder hole
Equal to the first shell（1）External diameter, the diameter of the second shoulder hole is equal to the external diameter of the outer convex joint of shell ring-type, the 3rd shoulder hole
Diameter is equal to the diameter of the first sintering plug；Described second graphite cannula is a shoulder hole graphite sleeve of indent insertion, and ladder
The diameter in hole and the first shell（1）External diameter equal, the external diameter of the outer convex joint of the diameter of through hole and shell ring-type is equal；Described
3rd graphite cannula is and ring-type indent capillary layer joint（10）Corresponding evagination three ladder graphite plug, and the diameter of the first ladder etc.
In ring-type indent capillary layer joint（10）Interior recess internal diameter, the diameter of the second ladder is equal to multiple branch circuit pipe joint（7）Close
Envelope cavity interface at intracavity footpath, the 3rd ladder with diameter greater than multiple branch circuit pipe joint（7）The chamber of sealing cavity seam outside
Footpath.
6. the preparation method of a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 4, its feature exists
In step（1）In, the material of described first sintering plug and the second sintering plug is rustless steel, nickel-base alloy or graphite；Described
First sintering plug length is more than the first shell（1）With the second shell（2）Length, diameter be less than the first shell（1）With second
Shell（2）Diameter；Described second sintering plug is longer than multiple branch circuit pipe joint（7）Sealing cavity each joint length；Diameter
Less than multiple branch circuit pipe joint（7）Each joint of sealing cavity diameter；Each equal diameters sintering plug.
7. the preparation method of a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 4, its feature exists
In step（4）In, the particle diameter of described metal dust is 25 ~ 100 μm.
8. the preparation method of a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 4, its feature exists
In step（2）~（5）In, described high temperature sintering is 850-950 DEG C of sintering 1-3 hour under protective gas atmosphere；Described protection
Gas is nitrogen, argon or hydrogen.
9. the preparation method of a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 4, its feature exists
In step（2）、（3）、（5）In, the particle size range of described metal dust is 50 ~ 125 μm.
10. the preparation method of a kind of multiple branch circuit heat pipe based on double sintering molding according to claim 4, its feature exists
In step（2）~（5）Described in metal dust be copper metal powder, aluminum metal powder or Ni alloy powder.
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| CN109099740A (en) * | 2018-09-03 | 2018-12-28 | 北京空间机电研究所 | A kind of truss-like liquid-gas phase transition heat transfer unit (HTU) and its assembling and welding method |
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