CN106482562B - A kind of spliced space multi-branch distribution heat pipe and preparation method thereof - Google Patents
A kind of spliced space multi-branch distribution heat pipe and preparation method thereof Download PDFInfo
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- CN106482562B CN106482562B CN201610933947.7A CN201610933947A CN106482562B CN 106482562 B CN106482562 B CN 106482562B CN 201610933947 A CN201610933947 A CN 201610933947A CN 106482562 B CN106482562 B CN 106482562B
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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
- 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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a kind of spliced space multi-branch distribution heat pipes and preparation method thereof.The spliced space multi-branch distribution heat pipe includes spatial multichannel pipe fitting (1), first branch shell (2), second branch shell (3), third branch shell (4) and the 4th branch shell (5).It is the sintered porous capillary layer of space connection inside the spliced space multi-branch distribution heat pipe of the present invention, with excellent heat transfer property, it simultaneously can be by pre-selecting the angle of each interface of spatial multichannel connector, neatly change the fork shape of space multiple branch circuit heat pipe, different heat-dissipating space demands is adapted to, provides a flexible, reliable, stable dissipating-heat environment for the micromation of electronic equipment, the integrated development of multi-chip.Preparation process of the present invention by branch with connector is separately manufactured splices again, be simple to manufacture, it is low in cost, meet industrial production demand.
Description
Technical field
The present invention relates to heat pipe and its manufacturing methods, and in particular to a kind of spliced space multiple branch circuit heat pipe and its manufacturer
Method.
Background technique
Traditional heat pipe mainly by a closed elemental metals shell, inner wall of tube shell capillary structure and be filled in metal
Liquid working substance composition in shell, and in keeping certain vacuum degree in Can, to improve the starting ability of heat pipe.Heat pipe
Working principle be: heat pipe evaporation ends be arranged heat source, manage intracorporal liquid working substance because absorb heat source distribute heat due to vapour
Change, generated steam flows to the condensation end of heat pipe under the driving of steam pressure difference, and steam is condensed into liquid in condensation end liquefaction
Body, and latent heat is discharged, liquid working substance flows back into evaporation ends through capillary structure under the driving of capillary force, forms following for a closure
Ring makes heat constantly efficiently be transmitted to condensation end from evaporation ends.Since heat pipe structure is simple and has high heat-transfer performance, low-heat
The features such as resistance, meets the thermally conductive requirement of high heat flux density, obtains extensively in the electronic technology field of radiating different with other already
Using.
Due to the development of modern technologies, electronic equipment obtains extensively in fields such as aerospace, military and commercial equipments
Using and rapid development, for the use demand for adapting to these fields, electronic equipment is gradually to micromation, integrated and high-power
Development.Due to the raising of electronic equipment integration degree, the quantity of high temperature heat source point increases therewith, miniature further realizing its
During change, power density is constantly increased.And traditional heat pipe is since structure is simple, the installation site of cold source, heat source
It is single, it is difficult to adapt to complicated working environment, the heat generated during electronic device works is difficult to obtain Quick diffusing, cause
Its service life, reliability, stability constantly reduce, and seriously hinder its development process.For this purpose, electronic equipment is to its heat dissipation design
It puts forward higher requirements, needs a set of thermal design scheme for adapting to its integrated micromation.
Patent 104567501 proposes a kind of multi-branch distribution heat pipe, but each branch is first welded on multi-way joint by it
On, fixed structure is formed, is inserted into plug, and be sintered after filling metal powder.Fixed structure occupies biggish sintering
Space, and for adapt to need after different dissipating-heat environment mapped structure cover plugs cooperation sintering, the flexibility of production method compared with
Difference, it is difficult to mass production.
Therefore, how to design it is a kind of have good isothermal, superior conductivity of heat, can overcome space factor limit and
The convenient, flexible heat pipe structure of manufacturing process is of great significance.
Summary of the invention
The main object of the present invention be for conventional heat pipe structure is single, space flexibility is poor, heat-sinking capability is insufficient and
The disadvantage of manufacture flexibility deficiency, space limitation can more be overcome, have high heat-transfer performance, manufacture spirit by proposing one kind
The spliced space multi-branch distribution heat pipe and its manufacturing method of living, separable manufacture, make up the technological deficiency of existing heat pipe.
In order to achieve the above object, the present invention is realized according to following technical solutions.
A kind of spliced space multi-branch distribution heat pipe, including spatial multichannel pipe fitting, first branch shell, second
Road shell, third branch shell and the 4th branch shell；The spatial multichannel pipe fitting has a closed type chamber, so that after sintering
Intracavitary capillary layer is interconnected, and guarantees that the liquid working substance of condensation flows back in each branch balance；Spatial multichannel pipe fitting
Closed type is intracavitary the sintered porous capillary connector for making each bypass duct keep the interface being connected in concave shaped；
The first branch shell, second branch shell, third branch shell and the 4th branch shell are closed at one end
One end is unclosed；The first branch shell, second branch shell, third branch shell and the 4th branch shell inner wall have
Sintered porous capillary layer, and porous capillary layer extends to form evagination capillary connector at the unclosed end of bypass duct；Porous capillary
The internal diameter of connector is equal with the internal diameter of evagination capillary connector, and two connectors can complementary fitting；
Each branch shell is embedded in porous capillary connector to the heart by evagination capillary connector, spells with spatial multichannel pipe fitting
The Bifurcation Structure to be formed and be interconnected is connect, the evagination capillary connector and porous capillary connector of the porous capillary layer of inner wall of tube shell are close
Fitting, the joint weld with the closed type chamber of spatial multichannel pipe fitting again of each branch shell；
The spliced space multi-branch distribution heat pipe is the rack space structure of vacuum, and liquid is filled in heat pipe chamber
Working medium.
Further, the spatial multichannel pipe fitting, the first shell, the second shell, third shell and the 4th shell
Material is red copper, aluminium or stainless steel.
Further, the liquid working substance is deionized water or ethyl alcohol.
Further, the negative pressure of the vacuum is 10~20Pa.
Further, the porosity of the porous capillary connector and porous capillary layer is 60~70%.
Further, the concave shaped of the porous capillary connector and the evagination capillary connector of each shell are complementary, described outer
The convex of convex capillary connector is taper or stairstepping.
Further, the shape of each shell includes cylinder-shaped or square tube shape, while the Interface Shape of spatial multichannel connector
Make corresponding change.
The method for preparing a kind of spliced space multi-branch distribution heat pipe described in any of the above embodiments, includes the following steps:
(1) prepare to be used for molding sintering plug, including the first sintering plug, the second sintering plug and third are sintered core
Stick；Graphite cannula for fixing, including the first graphite cannula, the second graphite cannula and third graphite cannula；By spatial multichannel connector
Oil processing is gone in closed type chamber, each sintering plug and the derusting of each shell；
(2) it is filled respectively in one end of first branch shell, second branch shell, third branch shell and the 4th branch shell
The first sintering plug is passed through into first branch shell, second branch shell, third branch with fixing the first graphite cannula, then respectively
The inner hole of shell and the 4th branch shell is fixed on the first graphite cannula and assemble to the heart；Third graphite cannula is assembled respectively and is fixed
On each interface of the sealing cavity bottom of spatial multichannel pipe fitting, by one second sintering plug from spatial multichannel pipe
Interface at the top of connector is inserted into the closed type chamber of spatial multichannel pipe fitting, then one end of third sintering plug is worn respectively
Each third graphite cannula on the sealing cavity bottom of spatial multichannel pipe fitting is crossed, the close of spatial multichannel pipe fitting is inserted into
In envelope type chamber, it is adjacent to the wall surface of the second sintering plug；
(3) metal powder that mesh number is 75-100 range size is filled into the first sintering plug and first branch pipe respectively
In gap between shell, second branch shell, third branch shell and the 4th branch shell, then the second graphite is put on respectively and is packed into
Row fixes the heart, while the port of each shell being blocked；By metal powder that mesh number is 100-125 range size from space multi-pass
The closed type that the top interface of the closed type chamber of road pipe fitting is filled into spatial multichannel pipe fitting is intracavitary, then gives top interface set
Upper third graphite cannula fix to the heart, and compacting seals top port；
(4) the closed type chamber of each shell of populated metal powder and spatial multichannel pipe fitting is placed in protective gas gas
High temperature sintering under atmosphere, sintered metal powder are attached on the closed type cavity wall of shell and spatial multichannel pipe fitting and are formed
The different porous capillary layer of porosity；
(5) it is cooled to room temperature after the completion of being sintered with atmosphere furnace, takes each graphite cannula away, extract each sintering plug out, respectively by the
One branch shell, second branch shell, third branch shell and the 4th branch shell are inserted into one end of convex capillary wick
On each interface of spatial multichannel pipe fitting, fitting complementary with the spill capillary layer of interface, then with welding procedure to respectively connecing
It is welded and fixed at mouthful, then the other end of second branch shell, third branch shell and the 4th branch shell is sealed
It closes, is finally vacuumized in the port of first branch shell, liquid working substance, sealing is perfused, obtain spliced space multiple branch circuit
It is distributed heat pipe.
Further, in step (1), the diameter of the first sintering plug is less than each shell internal diameter, and length is greater than respectively
Shell length.
Further, in step (1), the diameter of the second sintering plug and third sintering plug is respectively less than space multi-pass
The internal diameter of the closed type chamber of road pipe fitting, length is all larger than each passage length, and one end of third sintering plug can be close to second
It is sintered the cylindrical surface of plug.
Further, in step (1), each diameter for being sintered plug is equal.
Further, in step (1), each material for being sintered plug is stainless steel, nickel-base alloy or graphite.
Further, in step (1), each graphite cannula has to the heart fixed function sintering plug.
Further, in step (1), first graphite cannula is the two stepped hole graphite cannulas that indent does not penetrate through, the first rank
There are the chamfering in one to 30~60 °, the internal diameter of the first stepped hole and each shell outer diameter in terraced hole and the junction of the second stepped hole
Equal, the internal diameter in second-order hole is equal with the sintering diameter of plug.
Further, in step (1), second graphite cannula is a stepped hole graphite cannula of indent perforation, stepped hole
Internal diameter is equal with each shell outer diameter, and the diameter of through hole is equal with the sintering diameter of plug.
Further, in step (1), the third graphite cannula is a stepped hole graphite cannula of evagination perforation, through hole
Diameter is equal with the sintering diameter of plug, and has outside 30~60 ° of chamferings on outer convex end face, the outer diameter of concave portion and
The internal diameter of each interface of the closed type chamber of spatial multichannel pipe fitting is equal.
Further, in step (4), the metal powder includes copper metal powder or aluminum metal powder.
Further, in step (4), the protective gas is nitrogen or hydrogen；The high temperature sintering is 850~950
DEG C sintering 1-2 hours.
The number of the interface of spatial multichannel pipe fitting in the spliced space multi-branch distribution heat pipe of the present invention and mutually
Between angle can according to practical situations determine.
Compared with prior art, the present invention has the following advantages and effect:
(1) conventional heat pipe is compared, present invention proposition has manufactured a kind of space multiple branch circuit heat pipe, has been suitable for multi-heat source multi-freezing pipe
A variety of dissipating-heat environments being used cooperatively, inside heat pipe be space connection sintered porous capillary layer, have excellent conductivity of heat
Can, at the same can by pre-selecting the angle of each interface of spatial multichannel connector, make full use of heat-dissipating space guarantee again simultaneously compared with
The advantages that high capillary force and strong heat transfer property, meets the use demand that the highly integrated multiprocessor of electronic equipment radiates jointly.
(2) traditional loop circuit heat pipe and soaking plate manufacturing cost height are compared, processes inconvenient, capillary structure excessively complexity
Problem, spliced space multiple branch circuit heat pipe designed by the present invention have miniaturization, cheap, manufacture simplicity and flexibility good etc.
Advantage is suitble to the application of the more complicated dissipating-heat environment of high-power electronic device mould group, guarantees that its each position heat dissipation performance is stablized
Requirement, the marketing development of high-power electronic device can be pushed.
(3) plane multiple branch circuit heat pipe is compared, branch heat pipe space performance of the invention is stronger and manufacturing process is with higher
Flexibility, branch facilitates Multiple Type heat pipe to fabricate simultaneously with the separately manufactured manufacturing method spliced again of connector, more
Processing space and heat-dissipating space can be saved, provides better thermal control for the electronic equipment of multi-heat source multi-freezing pipe, at low cost
Solve more complicated heat dissipation problem.
Detailed description of the invention
Fig. 1 is the half of the spliced space multi-branch distribution heat pipe that a kind of spatial multichannel pipe fitting of the present invention is four connectors
Cross-sectional view.
Fig. 2 is the structural schematic diagram that one end is provided with that male-tapered is sintered the shell of capillary layer.
Fig. 3 is the structural schematic diagram for the spatial multichannel pipe fitting that sintering has capillary connector.
Fig. 4 is the shell of the spliced space multi-branch distribution heat pipe of the present invention and the assembly of spatial multichannel pipe fitting splicing
Schematic diagram.
Fig. 5 is the structural schematic diagram on the cylindrical surface that the second sintering plug is close in one end that third is sintered plug in embodiment 1.
Fig. 6 is the structural schematic diagram of the first graphite cannula in embodiment 1.
Fig. 7 is the structural schematic diagram of the third graphite cannula in embodiment 1.
Fig. 8 is the assembling schematic diagram of each shell and the first sintering plug before filling out powder in embodiment 1.
Fig. 9 is the assembling schematic diagram that powder front space four-way pipe fitting and each sintering plug are filled out in embodiment 1.
Figure 10 is the assembling schematic diagram of each shell and the first sintering plug after filling out powder in embodiment 1.
Figure 11 is the assembling schematic diagram of space four-way pipe fitting and each sintering plug after filling out powder in embodiment 1.
Figure 12 is the splicing schematic diagram of shell and space four-way pipe fitting in embodiment 1.
Figure 13 is the schematic cross-sectional view in Fig. 1 at A-A.
Figure 14 is the schematic cross-sectional view in Fig. 1 at B-B.
In attached drawing: 1- spatial multichannel pipe fitting；2- first branch shell；3- second branch shell；4- third bypass duct
Shell；The 4th branch shell of 5-；6- first is sintered plug；The first graphite cannula of 7-；The second graphite cannula of 8-；9- second is sintered plug；10-
Third is sintered plug；11- third graphite cannula；12- porous capillary layer；13- porous capillary connector.
Specific embodiment
The present invention is done below in conjunction with relevant drawings and specific embodiment and is further described in detail, but implementation of the invention
Therefore mode is not limited to the following examples.
It is as shown in Figure 1 the spliced space multiple branch circuit distributed heat that a kind of spatial multichannel pipe fitting of the present invention is four connectors
The half sectional view of pipe, including spatial multichannel pipe fitting 1, first branch shell 2, second branch shell 3, third branch shell 4
With the 4th branch shell 5；Spatial multichannel pipe fitting 1 has a closed type chamber, and the closed type of space four-way pipe fitting 1 is intracavitary to be had
Each bypass duct is set to keep the interface of connection in the sintered porous capillary connector 13 (such as Fig. 3) of inner concave conical；
First branch shell 2, second branch shell 3, third branch shell 4 and the 4th branch shell 5 are closed at one end
One end is unclosed；First branch shell 2, second branch shell 3, third branch shell 4 and the 4th branch shell 5 inner wall have
Sintered porous capillary layer 12 (such as Fig. 2), and porous capillary layer 12 extends to form at the unclosed end of bypass duct and connects with porous capillary
The corresponding outer male conical capillary connector of the inner concave conical of connector 13；The internal diameter of porous capillary connector 13 connects with outer male conical capillary
The internal diameter of head is equal；
Each branch shell is embedded in porous capillary connector 13 to the heart by outer male conical capillary connector, with space four-way deferent
Connector 1 is spliced to form the Bifurcation Structure interconnected, the outer male conical capillary connector of the porous capillary layer 12 of inner wall of tube shell and more
The fitting (such as Fig. 4) closely of hole capillary connector 13, each branch shell are welded with the interface of the closed type chamber of space four-way pipe fitting 1 again
It connects；
The spliced space multi-branch distribution heat pipe is the tetrahedron rack space structure of vacuum, and is filled in heat pipe chamber
Liquid working substance；
Closed type chamber, first branch shell 2, second branch shell 3, the third branch shell 4 of space four-way pipe fitting 1
Material with the 4th branch shell 5 is red copper, and each shell is circle.
Embodiment 1
Preparing a kind of above-mentioned spatial multichannel pipe fitting is four connectors, and each shell is circular spliced space multiple branch circuit point
Cloth heat pipe:
(1) will prepare to be used for molding sintering plug, including the first sintering plug 6, second is sintered plug 9 and third sintering
Plug 10；Graphite cannula for fixing, including the first graphite cannula 7, the second graphite cannula 8 and third graphite cannula 11；By space multi-pass
Oil processing is gone in road connector 1, each sintering plug and the derusting of each shell；
The diameter of first sintering plug 6 is less than each shell internal diameter, and length is greater than each shell length；The second sintering core
The diameter of stick 9 and third sintering plug 10 is respectively less than the internal diameter of the closed type chamber of space four-way pipe fitting 1, and length is all larger than respectively
Passage length, and one end of third sintering plug 10 can be close to the cylindrical surface (such as Fig. 5) of the second sintering plug 9；Each sintering plug
Diameter it is equal, each material for being sintered plug is stainless steel, and outer layer sprays release agent；
Each graphite cannula has to the heart fixed function sintering plug；First graphite cannula 7 is the second order that indent does not penetrate through
There are the chamfering (such as Fig. 6) in one to 45 °, the first ladder in the junction of terraced hole graphite cannula, the first stepped hole and the second stepped hole
The internal diameter in hole is equal with each shell internal diameter, and the internal diameter in second-order hole is equal with the sintering diameter of plug；Second graphite cannula 8 is
One stepped hole graphite cannula of indent perforation, the internal diameter of stepped hole is equal with each shell internal diameter, the diameter and sintering plug of through hole
Diameter it is equal；The third graphite cannula 11 is a stepped hole graphite cannula of evagination perforation, the diameter and sintering plug of through hole
Diameter it is equal, and have outside 45 ° of chamferings (such as Fig. 7) on outer convex end face, the outer diameter and space four-way of concave portion
The internal diameter of each interface of the closed type chamber of pipe fitting 1 is equal；
(2) respectively the one of first branch shell 2, second branch shell 3, third branch shell 4 and the 4th branch shell 5
End assembly fixes the first graphite cannula 7, then four first sintering plugs 6 are passed through first branch shell 2, second branch pipe respectively
The inner hole of shell 3, third branch shell 4 and the 4th branch shell 5 is fixed on the second stepped hole of the first graphite cannula 7, and process is such as
Shown in Fig. 8；Three assembly of third graphite cannula 11 are fixed on three interfaces of 1 bottom of space four-way pipe fitting respectively, it will
One second sintering plug 9 is inserted into the closed type of space four-way pipe fitting 1 from the interface at 1 top of spatial multichannel pipe fitting
In chamber, then one end of three thirds sintering plugs 10 is each passed through on the sealing cavity bottom of space four-way pipe fitting 1
The through hole of three third graphite cannulas 11 is inserted into the closed type chamber of space four-way pipe fitting 1, is adjacent to the second sintering plug 9
Wall surface, as shown in Figure 9；
(3) the copper metal powder that mesh number is 80 is filled into the first sintering plug 6 and first branch shell 2, second respectively
In gap between branch shell 3, third branch shell 4 and the 4th branch shell 5, then the progress of the second graphite cannula 8 is put on respectively
The heart is fixed, while the port of each shell being blocked, process is as shown in Figure 10；By mesh number be 100 copper metal powder from space
The closed type that the top interface of the closed type chamber of four-way pipe fitting 1 is filled into space four-way pipe fitting 1 is intracavitary, then gives top
Third graphite cannula fix to the heart in interface set, and compacting seals top port, and process is as shown in figure 11；
(4) each shell of populated copper metal powder and space four-way pipe fitting 1 are placed in the lower 950 DEG C of height of hydrogen atmosphere
Temperature sintering 1 hour, sintered copper metal powder is attached to shape on the closed type cavity wall of shell and space four-way pipe fitting 1
The porous capillary layer (such as Figure 13, Figure 14) for being 70% and 60% at porosity；
(5) it is cooled to room temperature after the completion of being sintered with atmosphere furnace, extracts each sintering plug out, take each graphite cannula away, respectively by the
One branch shell 2, second branch shell 3, third branch shell 4 and the 4th branch shell 5 have the one of outer male conical capillary wick
End is inserted on four interfaces of space four-way pipe fitting 1, and fitting complementary with the inner concave conical capillary layer of interface was spliced
Journey is as shown in figure 12, and arrow indicates assembly direction；Each interface is welded and fixed with welding procedure again, then to second
The other end of road shell 3, third branch shell 4 and the 4th branch shell 5 is closed, finally at the end of first branch shell 2
Mouth carries out taking out 20Pa negative-pressure vacuum, perfusion deionized water, sealing, welded seal, obtains more of spliced tetrahedron rack space
Road is distributed heat pipe.
Embodiment 2
Preparing a kind of above-mentioned spatial multichannel pipe fitting is four connectors, and each shell is circular spliced space multiple branch circuit point
Cloth heat pipe:
(1) will prepare to be used for molding sintering plug, including the first sintering plug 6, second is sintered plug 9 and third sintering
Plug 10；Graphite cannula for fixing, including the first graphite cannula 7, the second graphite cannula 8 and third graphite cannula 11；By space multi-pass
Oil processing is gone in road connector 1, each sintering plug and the derusting of each shell；
The diameter of first sintering plug 6 is less than each shell internal diameter, and length is greater than each shell length；The second sintering core
The diameter of stick 9 and third sintering plug 10 is respectively less than the internal diameter of the closed type chamber of space four-way pipe fitting 1, and length is all larger than respectively
Passage length, and one end of third sintering plug 10 can be close to the cylindrical surface (such as Fig. 5) of the second sintering plug 9；Each sintering plug
Diameter it is equal, each material for being sintered plug is stainless steel, and outer layer sprays release agent；
Each graphite cannula has to the heart fixed function sintering plug；First graphite cannula 7 is the second order that indent does not penetrate through
There are the chamfering in one to 30 °, the internal diameter of the first stepped hole in the junction of terraced hole graphite cannula, the first stepped hole and the second stepped hole
Equal with each shell internal diameter, the internal diameter in second-order hole is equal with the sintering diameter of plug；Second graphite cannula 8 is indent perforation
A stepped hole graphite cannula, the internal diameter of stepped hole is equal with each shell internal diameter, the diameter of through hole and the diameter phase for being sintered plug
Deng；The third graphite cannula 11 is a stepped hole graphite cannula of evagination perforation, the diameter phase of the diameter and sintering plug of through hole
Deng, and have outside 30 ° of chamferings on outer convex end face, the outer diameter of concave portion and the closed type of space four-way pipe fitting 1
The internal diameter of each interface of chamber is equal；
(2) respectively the one of first branch shell 2, second branch shell 3, third branch shell 4 and the 4th branch shell 5
End assembly fixes the first graphite cannula 7, then four first sintering plugs 6 are passed through first branch shell 2, second branch pipe respectively
The inner hole of shell 3, third branch shell 4 and the 4th branch shell 5 is fixed on the second stepped hole of the first graphite cannula 7, and process is such as
Shown in Fig. 8；Three assembly of third graphite cannula 11 are fixed on three interfaces of 1 bottom of space four-way pipe fitting respectively, it will
One second sintering plug 9 is inserted into the closed type of space four-way pipe fitting 1 from the interface at 1 top of spatial multichannel pipe fitting
In chamber, then one end of three thirds sintering plugs 10 is each passed through on the sealing cavity bottom of space four-way pipe fitting 1
The through hole of three third graphite cannulas 11 is inserted into the closed type chamber of space four-way pipe fitting 1, is adjacent to the second sintering plug 9
Wall surface, as shown in Figure 9；
(3) the copper metal powder that mesh number is 100 is filled into the first sintering plug 6 and first branch shell 2, second respectively
In gap between branch shell 3, third branch shell 4 and the 4th branch shell 5, then the progress of the second graphite cannula 8 is put on respectively
The heart is fixed, while the port of each shell being blocked, process is as shown in Figure 10；By mesh number be 105 copper metal powder from space
The closed type that the top interface of the closed type chamber of four-way pipe fitting 1 is filled into space four-way pipe fitting 1 is intracavitary, then gives top
Third graphite cannula fix to the heart in interface set, and compacting seals top port, and process is as shown in figure 11；
(4) each shell of populated copper metal powder and space four-way pipe fitting 1 are placed in the lower 900 DEG C of height of hydrogen atmosphere
Temperature sintering 1.8 hours, sintered copper metal powder is attached on the closed type cavity wall of shell and space four-way pipe fitting 1
Form the porous capillary layer (such as Figure 13, Figure 14) that porosity is 65%；
(5) it is cooled to room temperature after the completion of being sintered with atmosphere furnace, extracts each sintering plug out, take each graphite cannula away, respectively by the
One branch shell 2, second branch shell 3, third branch shell 4 and the 4th branch shell 5 have the one of outer male conical capillary wick
End is inserted on four interfaces of space four-way pipe fitting 1, and fitting complementary with the inner concave conical capillary layer of interface was spliced
Journey is as shown in figure 12, and arrow indicates assembly direction；Each interface is welded and fixed with welding procedure again, then to second
The other end of road shell 3, third branch shell 4 and the 4th branch shell 5 is closed, finally at the end of first branch shell 2
Mouth carries out taking out 10Pa negative-pressure vacuum, perfusion deionized water, sealing, welded seal, obtains more of spliced tetrahedron rack space
Road is distributed heat pipe.
Embodiment 3
Operating method similar to Example 2, unlike, the chamfering on the first graphite cannula 7 and third graphite cannula 11 is
60 °, the copper metal powder of capillary layer is mesh number 75 in each shell, the intracavitary filling of the closed type of spatial multichannel pipe fitting 1
It is the copper metal powder of 125 mesh, sintering temperature is 850 DEG C, and sintering time is 2 hours, porous capillary connector 13 and porous hair
The porosity of sub-layers 12 is 70% and 60%, is vacuumized as 15Pa.Other conditions are constant, and same available can similar splicing
Formula tetrahedron rack space multi-branch distribution heat pipe.
Specific embodiments of the present invention are only to say bright examples made by the present invention to be clear, and it is real to the present invention for being not
Apply the restriction of mode.For the skilled worker in corresponding field, similar change can also be made on the basis of the above description
Dynamic, variation within the scope of the claims also can be achieved, and can not and be not necessarily to be exhaustive all embodiments herein.It is all
Any modifications, equivalent replacements, and improvements etc. made within the spirit and principles in the present invention should be included in right of the present invention and want
Within the protection scope asked.
Claims (9)
1. a kind of spliced space multi-branch distribution heat pipe, which is characterized in that including spatial multichannel pipe fitting (1), first
Road shell (2), second branch shell (3), third branch shell (4) and the 4th branch shell (5)；The spatial multichannel pipe connects
Head (1) has a closed type chamber, and the closed type of spatial multichannel pipe fitting (1) is intracavitary the interface for making each bypass duct keep connection
In the sintered porous capillary connector (13) of concave shaped；
The first branch shell (2), second branch shell (3), third branch shell (4) and the 4th branch shell (5) are
One end closed at one end is unclosed；The first branch shell (2), second branch shell (3), third branch shell (4) and the 4th
The inner wall of branch shell (5) has sintered porous capillary layer (12), and porous capillary layer (12) is in the unclosed of branch shell
End extends to form evagination capillary connector；The internal diameter of porous capillary connector (13) is equal with the internal diameter of evagination capillary connector, and two
Connector can complementary fitting；
Each branch shell is embedded in porous capillary connector (13) to the heart by evagination capillary connector, with spatial multichannel pipe fitting
(1) Bifurcation Structure interconnected, the evagination capillary connector and porous hair of the porous capillary layer (12) of inner wall of tube shell are spliced to form
Thin connector (13) is bonded closely, the joint weld with the closed type chamber of spatial multichannel pipe fitting (1) again of each branch shell；
The spliced space multi-branch distribution heat pipe is the rack space structure of vacuum, and liquid work is filled in heat pipe chamber
Matter.
2. a kind of spliced space multi-branch distribution heat pipe according to claim 1, which is characterized in that the space multi-pass
Road pipe fitting (1), the first shell (2), the second shell (3), third shell (4) and the 4th shell (5) material be red copper, aluminium or
Stainless steel.
3. a kind of spliced space multi-branch distribution heat pipe according to claim 1, which is characterized in that the liquid working substance
For deionized water or ethyl alcohol；The negative pressure of the vacuum is 10 ~ 20Pa；The porous capillary connector (13) and porous capillary layer
(12) porosity is 60 ~ 70%.
4. a kind of spliced space multi-branch distribution heat pipe according to claim 1, which is characterized in that the porous capillary
The concave shaped of connector (13) and the evagination capillary connector of each shell are complementary, and the convex of the evagination capillary connector is taper or rank
It is trapezoidal；The shape of each shell includes cylinder-shaped or square tube shape, while the Interface Shape of spatial multichannel connector (1) does and changes accordingly
Become.
5. preparing a kind of described in any item methods of spliced space multi-branch distribution heat pipe of claim 1 ~ 4, feature exists
In including the following steps:
(1) prepare to be used for molding sintering plug, including the first sintering plug, the second sintering plug and third are sintered plug；With
In fixed graphite cannula, including the first graphite cannula, the second graphite cannula and third graphite cannula；By the close of spatial multichannel connector (1)
Oil processing is gone in envelope type chamber, each sintering plug and the derusting of each shell；
(2) respectively in first branch shell (2), second branch shell (3), third branch shell (4) and the 4th branch shell (5)
One end assembly fix the first graphite cannula, then respectively by first sintering plug pass through first branch shell (2), second branch pipe
The inner hole of shell (3), third branch shell (4) and the 4th branch shell (5) is fixed on the first graphite cannula and assemble to the heart；Respectively
The assembly of third graphite cannula is fixed on each interface of sealing cavity bottom of spatial multichannel pipe fitting (1), by one piece the
Two sintering plugs are inserted into the closed type chamber of spatial multichannel pipe fitting (1) from the interface at the top of spatial multichannel pipe fitting (1)
In, then one end of third sintering plug is each passed through on the sealing cavity bottom of spatial multichannel pipe fitting (1) each the
Three graphite cannulas are inserted into the closed type chamber of spatial multichannel pipe fitting (1), are adjacent to the wall surface of the second sintering plug；
(3) metal powder that mesh number is 75-100 range size is filled into the first sintering plug and first branch shell respectively
(2), in the gap between second branch shell (3), third branch shell (4) and the 4th branch shell (5), then is put on respectively
Two graphite cannulas fix to the heart, while the port of each shell being blocked；It is the metal powder of 100-125 range size by mesh number
The closed type chamber of spatial multichannel pipe fitting (1) is filled into from the top interface of the closed type chamber of spatial multichannel pipe fitting (1)
It is interior, then fix the heart to third graphite cannula in the interface set of top, compacting seals top port；
(4) the closed type chamber of each shell of populated metal powder and spatial multichannel pipe fitting (1) is placed in protective gas gas
High temperature sintering under atmosphere, sintered metal powder are attached on the closed type cavity wall of shell and spatial multichannel pipe fitting (1)
Form the different porous capillary layer of porosity；
(5) it is cooled to room temperature after the completion of being sintered with atmosphere furnace, takes each graphite cannula away, extract each sintering plug out, respectively by first
Road shell (2), second branch shell (3), third branch shell (4) and the 4th branch shell (5) are with evagination capillary connector
One end is inserted on each interface of spatial multichannel pipe fitting (1), fitting complementary with porous capillary connector (13) of interface,
Each interface is welded and fixed with welding procedure again, then to second branch shell (3), third branch shell (4) and
The other end of four branch shells (5) is closed, and is finally vacuumized in the port of first branch shell (2), liquid is perfused
Working medium, sealing, welded seal obtain spliced space multi-branch distribution heat pipe.
6. a kind of preparation method of spliced space multi-branch distribution heat pipe according to claim 5, which is characterized in that step
Suddenly in (1), the diameter of the first sintering plug is less than each shell internal diameter, and length is greater than each shell length；Described second burns
At each connector channel for the closed type chamber that the diameter of knot plug and third sintering plug is respectively less than spatial multichannel pipe fitting (1)
Internal diameter, length is all larger than each passage length, and one end of third sintering plug can be close to the cylindrical surface of the second sintering plug；It is each to burn
The diameter for tying plug is equal；The material of each sintering plug is stainless steel, nickel-base alloy or graphite.
7. a kind of preparation method of spliced space multi-branch distribution heat pipe according to claim 5, which is characterized in that step
Suddenly in (1), each graphite cannula has to the heart fixed function sintering plug；First graphite cannula is what indent did not penetrated through
There are the chamfering in one to 30 ~ 60 °, the first ladder in the junction of two stepped hole graphite cannulas, the first stepped hole and the second stepped hole
The internal diameter in hole is equal with each shell outer diameter, and the internal diameter in second-order hole is equal with the sintering diameter of plug；Second graphite cannula is
One stepped hole graphite cannula of indent perforation, the internal diameter of stepped hole is equal with each shell outer diameter, the diameter and sintering plug of through hole
Diameter it is equal；The third graphite cannula is a stepped hole graphite cannula of evagination perforation, diameter and the sintering plug of through hole
Diameter is equal, and has outside 30 ~ 60 ° of chamferings on outer convex end face, the outer diameter and spatial multichannel pipe fitting of concave portion
(1) internal diameter of each interface of closed type chamber is equal.
8. a kind of preparation method of spliced space multi-branch distribution heat pipe according to claim 5, which is characterized in that step
Suddenly in (4), the metal powder includes copper metal powder or aluminum metal powder.
9. a kind of preparation method of spliced space multi-branch distribution heat pipe according to claim 5, which is characterized in that step
Suddenly in (4), the protective gas is one of nitrogen and hydrogen；The high temperature sintering is small in 850 ~ 950 DEG C of sintering 1-2
When.
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| EP3421917B1 (en) * | 2017-06-30 | 2021-06-02 | Nokia Solutions and Networks Oy | Wick structures and heat pipe networks |
| US10575098B2 (en) | 2018-02-13 | 2020-02-25 | Nokia Technologies Oy | Speaker apparatus having a heat dissipation structure |
| US10841706B2 (en) | 2018-02-13 | 2020-11-17 | Nokia Technologies Oy | Speaker apparatus having a heat dissipation structure including an active element |
| CN109099740B (en) * | 2018-09-03 | 2020-06-09 | 北京空间机电研究所 | Truss type vapor-liquid phase change heat transfer device and assembly welding method thereof |
| CN111076585A (en) * | 2019-11-28 | 2020-04-28 | 北京空间机电研究所 | Truss-like vapour liquid phase transition capillary pump subassembly for heat transfer device |
| CN111076586A (en) * | 2019-11-28 | 2020-04-28 | 北京空间机电研究所 | Variable diameter channel heat pipe and connecting method thereof |
| CN112229253B (en) * | 2020-10-30 | 2022-07-08 | 上海卫星装备研究所 | Heat pipe branch connecting device and heat pipe system |
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| TWM334308U (en) * | 2007-12-27 | 2008-06-11 | Auras Technology Co Ltd | Multi-directional heat pipe assembly structure and heat dissipating device thereof |
| CN102245995A (en) * | 2008-11-12 | 2011-11-16 | 阿斯特里姆有限公司 | Thermal control device with network of interconnected capillary heat pipes |
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