CN108426477A - A kind of compact antigravity loop heat pipe - Google Patents
A kind of compact antigravity loop heat pipe Download PDFInfo
- Publication number
- CN108426477A CN108426477A CN201810332681.XA CN201810332681A CN108426477A CN 108426477 A CN108426477 A CN 108426477A CN 201810332681 A CN201810332681 A CN 201810332681A CN 108426477 A CN108426477 A CN 108426477A
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- China
- Prior art keywords
- pipe
- evaporator
- inner tube
- condenser
- outer tube
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—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
- F28D15/043—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 forming loops, e.g. capillary pumped loops
Abstract
The present invention relates to thermal control equipment technical fields, disclose a kind of compact antigravity loop heat pipe, and wherein liquid line, evaporator, gas piping and condenser is sequentially connected forming circuit, which further includes：Secondary evaporator；Liquid line and gas piping are pipe-in-pipe structure, and secondary evaporator is connected with the condenser pipe of condenser.A kind of compact antigravity loop heat pipe provided by the invention; by setting gas piping and liquid line to pipe-in-pipe structure; the space of a very small sized pipeline need to be only occupied between evaporator and condenser; it is simple in structure; system occupied space can be reduced, is convenient for system flexible arrangement, at low ambient temperatures; it easily facilitates and implements insulated heat on the outside of pipeline, to which system space be greatly saved；By the way that secondary evaporator is arranged, auxiliary power is provided for circulating for working medium in pipeline, in the case where loop heat pipe is in horizontality or antigravity state, loop heat pipe is made reliably to start and run.
Description
Technical field
The present invention relates to thermal control equipment technical fields, more particularly to a kind of compact antigravity loop heat pipe.
Background technology
Heat pipe is a kind of efficient heat-transfer equipment, and heat-transfer capability one or two order of magnitude higher than metal heat-conducting is claimed
For the superconductor of heat.Conventional heat pipe includes mainly metal shell, capillary structure and working media, capillary structure usually by conduit or
Sintered porous structure is constituted, and is distributed on entire heat pipe length direction, flexible poor although simple in structure, in addition
Since heat pipe is axially covered with capillary structure, liquid flowing resistance is larger, and liquid with gas in the same space along phase negative side
To flowing, there are problems that carrying, therefore influences adopting heat pipes for heat transfer ability and further increase.
Loop heat pipe is also a kind of thermal control equipment that gas-liquid phase transition progress efficient heat transfer occurring using working media, main to wrap
Evaporator, condenser, gas piping, liquid line are included, is connected evaporator and condenser by gas piping, liquid line
Connect, form loop, compared with conventional heat pipe, capillary structure exists only in inside evaporator, evaporator and condenser it
Between connected by flexible metal thin-wall tube, working medium, which flows through thin-wall metal pipe, can obtain smaller flow resistance, and can be more preferable
Ground is flexibly connected between low-temperature receiver and heat source, is more advantageous to and is realized remotely transferring, isolation vibration and electromagnetic interference etc., and
And gas-liquid working medium is flowed respectively along different paths, avoids occurring flowing carrying problem, therefore heat transfer efficiency higher, space flight,
The fields such as superconduction, electronic device are widely used.
Usually there are two, three even more a plurality of transfer conduits between the evaporator and condenser of existing loop heat pipe,
Structure is complicated, needs to occupy more system spaces, and the deployment tube in many application scenarios when coupling with radiating element
It needs that more fixed structures are arranged when road, especially for the heat pipe of work at low ambient temperatures, needs by volume
The protection ability normal operation of huge vacuum insulation system, to necessarily occupy the system space of bigger；And many circuits
Heat pipe be required for by gravity booster action can normal operation, working under horizontality or antigravity state can not
It leans on, these factors bring many inconvenience to the practical application of loop heat pipe.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of compact antigravity loop heat pipes, for solving or partly solving existing circuit
Usually there are two, three even more a plurality of transfer conduits, structure is complicated, occupies bigger between the evaporator and condenser of heat pipe
System space；And many loop heat pipes be required for by gravity booster action can normal operation, in horizontality or
Work insecure problem under person's antigravity state.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of compact antigravity loop heat pipe, wherein liquid line,
Evaporator, gas piping and condenser are sequentially connected forming circuit, which further includes：Secondary evaporator；The liquid line
Road and the gas piping are pipe-in-pipe structure, and the secondary evaporator is connected with the condenser pipe of the condenser.
On the basis of said program, the pipe-in-pipe structure specifically includes：It inner tube and is set on the outside of said inner tube
Outer tube；There is gap between said inner tube and the outer tube, the first end of said inner tube is connected with the first end of condenser pipe, described
The second end of condenser pipe is connected with the first end of the outer tube, second end and steaming of the second end of said inner tube with the outer tube
It sends out device to be connected, said inner tube is in the gap between liquid line, said inner tube and the outer tube is gas piping or is described
Pipe is that the gap between gas piping, said inner tube and the outer tube is liquid line.
On the basis of said program, a kind of compact antigravity loop heat pipe further includes：Transformational structure；The Change-over knot
The second of first end and condenser pipe of the structure for connecting the first end of inner tube and the first end of condenser pipe and connection outer tube
End.
On the basis of said program, the transformational structure include a hollow shell, the first end of the hollow shell with
The first end of the outer tube is connected, and the outer tube is connected with the hollow shell, and the first end of said inner tube is from described hollow
The first end of shell is inserted into and is pierced by the first of the hollow shell and the condenser pipe from the second end of the hollow shell
End is connected, and the second end of the condenser pipe is connected with the third end of the hollow shell, and the second end of the condenser pipe is logical
The hollow shell is crossed with the outer tube to be connected.
On the basis of said program, the second end of the second end of said inner tube and the outer tube directly with the evaporator
The evaporation that connected or the second end of said inner tube and the second end of the outer tube pass through the transformational structure and the evaporator
Pipeline is connected.
On the basis of said program, capillary structure is set inside the secondary evaporator.
On the basis of said program, a kind of compact antigravity loop heat pipe further includes：Secondary liquid storage device；The secondary liquid storage
Device is connected with the secondary evaporator and the condenser pipe respectively.
On the basis of said program, a kind of compact antigravity loop heat pipe further includes：Air reservoir；The air reservoir with it is described
Gas piping is connected.
On the basis of said program, support construction is set in the gap between said inner tube and the outer tube, it is described
The lateral wall of support construction connection said inner tube and the madial wall of the outer tube, for making the opposite of said inner tube and the outer tube
Position is kept fixed.
On the basis of said program, the capillary structure being arranged inside the secondary evaporator includes liquid-sucking core, the imbibition
The inner surface close-fitting contact of the outer surface of core and the secondary evaporator shell, in the outer surface of the liquid-sucking core or described
Gas conduit is arranged in the inner surface of secondary evaporator shell.
(3) advantageous effect
A kind of compact antigravity loop heat pipe provided by the invention, by setting gas piping and liquid line to pipe
Sleeve structure, can both meet gas piping and the problem of liquid line separates, is not in carrying independently of each other, and in evaporator
The space of a pipeline need to be only occupied between condenser, it is simple in structure, system occupied space can be reduced, further may be used
It convenient for system flexible arrangement, and at low ambient temperatures, easily facilitates and implements insulated heat on the outside of pipeline, to greatly save
System space；Can be that circulating for working medium provides auxiliary power in pipeline, in loop heat pipe by the way that secondary evaporator is arranged
Under horizontality or antigravity state, loop heat pipe is made reliably to start and run.
Description of the drawings
Fig. 1 is the structural schematic diagram according to a kind of compact antigravity loop heat pipe of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram according to a kind of compact antigravity loop heat pipe of the embodiment of the present invention 1；
Fig. 3 is the structural schematic diagram according to a kind of compact antigravity loop heat pipe of the embodiment of the present invention 2.
Reference sign：
1-evaporator；2-condensers；3-inner tubes；
4-outer tubes；5-secondary evaporators；11-liquid-sucking cores；
12-shells；13-gas conduits；14-baffles；
15-evaporation tube roads；16-evaporation plate bodys；21-condenser pipes；
22-condensation plate bodys；23-transformational structures；41-air reservoirs；
51-capillary structures.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
The present embodiment provides a kind of compact antigravity loop heat pipe according to the present invention, with reference to figure 1, wherein liquid line,
Evaporator 1, gas piping and condenser 2 are sequentially connected forming circuit, which further includes：Secondary evaporator 5；The liquid
Pipeline and the gas piping are pipe-in-pipe structure, and the secondary evaporator 5 is connected with the condenser pipe 21 of the condenser 2.
A kind of compact antigravity loop heat pipe provided in this embodiment, shape is simple, compact-sized, compared with prior art
Saving installation space that can be larger, and the loop heat pipe can reliably be started and run under the conditions of antigravity, can be solved existing
Some loop heat pipes occupy the problem that system space is big, transfer conduit arranges very complicated and antigravity working performance difference.
In the loop heat pipe, condenser 2, liquid line, evaporator 1, gas piping are sequentially communicated forming circuit structure.It will
Liquid line and gas piping are set as pipe-in-pipe structure, i.e., are mutually arranged liquid line and gas piping.Liquid line and
Gas piping occupies the space of a pipeline jointly, and is spaced from each other.
By setting gas piping and liquid line to pipe-in-pipe structure, it can both meet gas piping and liquid line phase
The problem of mutually independently separating, be not in carrying, and it is only used in one pipeline of setting between evaporator 1 and condenser 2, knot
Structure is simple, can reduce system occupied space.Further, system flexible arrangement can be convenient for, and at low ambient temperatures, more just
In implementing insulated heat on the outside of pipeline, to which system space be greatly saved.
Further, increase setting flush distillation device 5 on condenser pipe 21.Because in condenser pipe 21 being mainly liquid
Body, existing loop heat pipe generally require just to can guarantee the recycle stream of liquid and gas in circuit by gravity booster action
It is dynamic.The loop heat pipe adds secondary evaporator 5, can be that circulating for working medium provides auxiliary power in pipeline, in loop heat pipe
Under horizontality or antigravity state, loop heat pipe is made reliably to start and run.
Further, secondary evaporator 5 can be connected in series at both ends by connecting leg and condenser pipe 21, also can be with condenser pipe
21 is in parallel connected, and other pipelines structure can also be used and be connected, can realize that secondary evaporator 5 is connected to condenser pipe 21 so that cold
For the purpose of solidifying working medium can flow through secondary evaporator 21, this is not limited.
On the basis of the above embodiments, further, the pipe-in-pipe structure specifically includes：Inner tube 3 and it is set in institute
State the outer tube 4 in 3 outside of inner tube；There are gap, the first end and condenser pipe of said inner tube 3 between said inner tube 3 and the outer tube 4
21 first end is connected, and the second end of the condenser pipe 21 is connected with the first end of the outer tube 4, and the second of said inner tube 3
End is connected with the second end of the outer tube 4 with evaporator 1, said inner tube 3 be liquid line, said inner tube 3 and the outer tube 4 it
Between gap be gas piping or said inner tube 3 be gap between gas piping, said inner tube 3 and the outer tube 4 is liquid
Body pipeline.
The present embodiment is based on above-described embodiment, and the concrete structure of gas piping and liquid line is illustrated.Gas
The pipe-in-pipe structure of pipeline and liquid line is specially：Inner tube 3 is located at the inside of outer tube 4, and outer tube 4 is set in the outside of inner tube 3,
And there is gap between inner tube 3 and outer tube 4.
Inner tube 3 and outer tube 4 are arranged between condenser 2 and evaporator 1, and circuit is connected to form with condenser 2 and evaporator 1
Structure.The first end that the first end and outer tube 4 that inner tube 3 is connected with condenser pipe 21 are connected with condenser pipe 21 should be located at pipe-in-pipe
The same side of structure.
Specifically, inner tube 3 can be set to liquid line, is flue by the gap setting between inner tube 3 and outer tube 4
Road.The first end of inner tube 3 is connected with the outlet of condenser pipe 21, the first end of outer tube 4 and the entrance phase of condenser pipe 21
Even.The liquid flowed out from condenser pipe 21 flows to evaporator 1 in inner tube 3, and the gas flowed out from evaporator 1 is from 3 He of inner tube
It is flowed in gap between outer tube 4 in the entrance of condenser pipe 21.
Also inner tube 3 can be set to gas piping, is liquid line by the gap setting between inner tube 3 and outer tube 4.It will
Inner tube 3 is connected with the entrance of condenser pipe 21, and outer tube 4 is connected with the outlet of condenser pipe 21.The liquid flowed out from condenser pipe 21
Body flows in the gap between inner tube 3 and outer tube 4 in evaporator 1, and the gas flowed out from evaporator 1 is flowed from inner tube 3
Into the entrance of condenser pipe 21.
On the basis of the above embodiments, further, with reference to figure 2, a kind of compact antigravity loop heat pipe further includes：
Transformational structure 23；The transformational structure 23 is used to connect the first end of inner tube 3 and the first end of condenser pipe 21 and connect outside
The second end of the first end and condenser pipe 21 of pipe 4.
On the basis of the above embodiments, further, the transformational structure 23 includes a hollow shell, the hollow shell
The first end of body is connected with the first end of outer tube 4, and the outer tube 4 is connected with the hollow shell, the first end of said inner tube 3
It is inserted into from the first end of the hollow shell and is pierced by the hollow shell and the condensation from the second end of the hollow shell
The first end of pipeline 21 is connected, and the second end of the condenser pipe 21 is connected with the third end of the hollow shell, the condensation
The second end of pipeline 21 is connected by the hollow shell with the outer tube 4.
The present embodiment is based on above-described embodiment, to the connection structure of the first end of inner tube 3 and outer tube 4 and condenser pipe 21 into
Explanation is gone.Inner tube 3 and outer tube 4 are connected with the both ends of condenser pipe 21 in first end by the realization of transformational structure 23 respectively.It is logical
Transformational structure 23 is crossed, the outlet of condenser pipe 21 and the import of liquid line are connected, by 21 import of condenser pipe and flue
Way outlet connects.
Transformational structure 23 can be a hollow shell, may be, for example, rectangular hollow shell or cylinder or other, to this
It does not limit.The first end of hollow shell is connected with the first end of outer tube 4, hollow shell is made to be connected with outer tube 4.Because interior
Pipe 3 is located at the inside of outer tube 4, and in the first end of hollow shell, inner tube 3 also is located at the inside of hollow shell.
Then the first end of inner tube 3 is inserted into hollow shell from the first end of hollow shell, then from the of hollow shell
Two ends are pierced by be connected with the first end of condenser pipe 21.In this way, realizing the first end of the first end and condenser pipe 21 of inner tube 3
It is connected, and the gap between inner tube 3 and inner tube 3 and outer tube 4 is spaced.The second end and first that inner tube 3 is pierced by from hollow shell
End can be mutually contradictory end face.
Then it is connected with the second end of condenser pipe 21 at the third end of hollow shell, the second end of condenser pipe 21 passes through
Gap between hollow shell and inner tube 3 and outer tube 4 is connected.Distinguish at one end to realize gas piping and liquid line
It is connected in the both ends of condenser pipe 21, and independently of each other.
Further, other structures can also be used in inner tube 3 and outer tube 4 and the connection at 21 both ends of condenser pipe, can realize
Gas piping and liquid line are pipe-in-pipe structure, and for the purpose of capable of being formed into a loop with condenser pipe 21 and evaporator 1, to this
It does not limit.
On the basis of the above embodiments, further, the second end of said inner tube 3 and the second end of the outer tube 4 are straight
It connects and is connected with the evaporator 1 or the second end of said inner tube 3 and the second end of the outer tube 4 pass through the transformational structure
23 are connected with the evaporation tube road 15 of the evaporator 1.
The present embodiment is based on above-described embodiment, and the connection between the second end to inner tube 3 and outer tube 4 and evaporator 1 carries out
Explanation.It, can be direct by the second end of inner tube 3 and outer tube 4 when evaporator 1 is column or other structures with accommodating space
It is connected with evaporator 1, inner tube 3 and outer tube 4 is made to be connected simultaneously with the accommodating space inside evaporator 1.
In this way, liquid working substance is flowed by liquid line in evaporator 1, it is evaporated to after gas again through gas piping stream
Go out, is formed into a loop.
Evaporator 1 be pipeline structure, that is, when being provided with pipeline, need to by the both ends of evaporation tube road 15 respectively with gas piping
It is connected with liquid line.At this point, identical as the connection of condenser pipe 21, inner tube 3 and outer can be realized by the way that transformational structure 23 is arranged
The second end of pipe 4 is connected with the both ends of evaporation tube road 15 respectively.The setting of transformational structure 23 is similar to the above, repeats no more.
On the basis of the above embodiments, further, capillary structure 51 is arranged in 5 inside of the secondary evaporator.
The present embodiment is based on above-described embodiment, and the structure of evaporator 1 and secondary evaporator 5 is illustrated.Evaporator 1
This can not be limited for the purpose of the heat that can preferably absorb institute's contact component for the evaporator 1 of any structure.Evaporation
It, can be directly by inner tube 3 and the second end of outer tube 4 and evaporator 1 when device 1 is column or other internal structures with accommodating space
Side wall be connected, both make to be connected, liquid working substance can flow directly into inside evaporator 1, and gas medium is in evaporator 1
Portion flows directly into gas piping.
Evaporator 1 or plate, may be, for example, the shapes such as discoid, tabular or saddle, at this point, can be in platy structure
Inside setting channel, makes inner tube 3 and the second end of outer tube 4 be connected with channel.It may also set up evaporation tube road 15 and inner tube 3 and outside
The second end of pipe 4 is connected, and evaporation tube road 15, which can be embedded in, to be arranged in platy structure, can also be fixed at the one of platy structure
Side.
Evaporator 1 also can directly be pipeline form, and pipeline is well contacted with cooling-part is needed.To evaporator 1
The no any restrictions of setting of concrete shape and structure can specifically be set, according to actual needs to adapt to need cooling end
For the purpose of part, this is not limited.
The inside of evaporator 1 can be cavity structure, i.e. either accommodating space either channel or pipeline, and inside is without it
He is arranged, and can not have to setting capillary structure 51.It may also set up capillary structure 51 inside evaporator 1, such as micro groove structure can be set,
May also set up liquid-sucking core 11, such as sintering powder, fiber, foam metal or for several wires, netted or beam made of fiber
Shape structure, capillary structure 51 can be also made of at least two above structures.
Further, evaporator 1 may also include the structure type that other can make liquid working substance be evaporated to gas, not to this
It limits.
Secondary evaporator 5 or any shape, can be column or plate or other, this is not limited.To ensure
Secondary evaporator 5 is internally provided with capillary structure 51 to the promotion effect circulated of working medium in entire circuit, secondary evaporator 5,
It is not cavity structure.
Micro groove structure can be equally arranged in capillary structure 51, may also set up liquid-sucking core 11, be such as sintered powder, fiber, foam gold
Category is netted or fascicular texture made of several wires, fiber, and capillary structure 51 also can be by least two above structures
Composition.Secondary evaporator 5 may also comprise other structures that liquid working substance can be made to be evaporated to gas, not limit this.
Inside secondary evaporator 5, by the capillarity of capillary structure 51, condensed fluid in condenser pipe 21 is driven not
Disconnectedly flowed to evaporator 1.By the way that secondary evaporator 5 is arranged, auxiliary driving force is provided for the flowing of gas-liquid two-phase working medium circulation, is made back
Road heat pipe starts and runs performance under horizontality or antigravity state with relatively reliable.
Especially at low ambient temperatures, gravity booster action is needed not rely on, secondary evaporator 5 can drive condenser 2
In liquid working substance constantly flow to evaporator 1, and pipe in line is cooled down, cryogenic liquid is made smoothly to reach far
The evaporator 1 at end provides premise guarantee for the operation of cryogenic loop heat pipe, keeps loop heat pipe suitable by the way that secondary evaporator 5 is arranged
For broader practice environment.
On the basis of the above embodiments, further, the secondary evaporator 5 is arranged in series in the condenser pipe 21
On, the both ends of the secondary evaporator 5 are connected by connecting leg with condenser pipe 21 respectively.
The present embodiment is based on above-described embodiment, and the setting of secondary evaporator 5 is illustrated.Secondary evaporator 5 is arranged in series
In condenser pipe 21.It is connected respectively with condenser pipe 21 by connecting leg in the rear and front end of secondary evaporator 5, condensate liquid can be convenient for
Body flows in and out.The case where according to heat exchange amount size, designs the structural parameters of both sides condenser pipe 21.Secondary evaporator 5
Import is set to relatively close to the position of condenser 2, to make the condensed fluid in condenser pipe 21 be easier to be flowed into time
Within evaporator 5.
On the basis of the above embodiments, further, a kind of compact antigravity loop heat pipe further includes：Secondary liquid storage
Device；The secondary liquid storage device is connected with the secondary evaporator 5 and the condenser pipe 21 respectively.
It is ready work to start secondary evaporator 5, time liquid storage can also be set between secondary evaporator 5 and condenser 2
Device, secondary liquid storage device can be contacted with condenser 2, make time liquid storage device be easier to cool down, and form condensation inside secondary liquid storage device
Liquid.Secondary liquid storage device can be arranged in series in condenser pipe 21, make time liquid storage device respectively with 5 phase of condenser pipe 21 and secondary evaporator
Connection；Secondary liquid storage device can be also arranged in parallel with condenser pipe 21, make time liquid storage device respectively with 5 phase of condenser pipe 21 and secondary evaporator
Connection.
Secondary liquid storage device is connected to condenser 2 and secondary evaporator 5, the condensed fluid in secondary liquid storage device can be very easy into
Enter in secondary evaporator 5.5 job stability of secondary evaporator and feed flow continuity can be improved by the way that time liquid storage device is arranged.
On the basis of the above embodiments, further, a kind of compact antigravity loop heat pipe further includes：Air reservoir 41；
The air reservoir 41 is connected with the gas piping.
The present embodiment is based on above-described embodiment, and setting air reservoir 41 is connected to gas piping, can avoid low at ambient temperature
Temperature loops inside heat pipe pressure is more than safe range.Cryogenic loop heat pipe can be effectively relieved at ambient temperature in setting air reservoir 41
The problem of hypertonia, while gas working medium when also loop heat pipe being enable to run at low temperature in air reservoir 41 is constantly to returning
Supplement in the heat pipe of road, to ensure that there is sufficient gas-liquid two-phase working medium in loop heat pipe.
On the basis of the above embodiments, further, it is arranged in the gap between said inner tube 3 and the outer tube 4
Support construction, the support construction connect the lateral wall of said inner tube 3 and the madial wall of the outer tube 5, for making said inner tube 3
It is kept fixed with the relative position of the outer tube 5.
Further, the support construction is used to keep stabilization and the guarantee of 4 relative position of said inner tube 3 and the outer tube
Interval support or continuous support, branch may be used in the circulation in gap between said inner tube 3 and the outer tube 4, the support construction
Support structure can be supporting point, support bar, support plate or support ring.
Between inner tube 3 and outer tube 4, i.e., support construction, Ke Yishi can also be set between liquid line and gas piping
It, can also be along continuously being supported on pipeline direction every one section of setting, one interval support.
Point support construction is that the part between inner tube 3 and outer tube 4 a little or at multiple is supported.Wire-braced structures
It is the support construction that setting is in one section of long strip between inner tube 3 and outer tube 4.Spacer support is between inner tube 3 and outer tube 4
Spaced sectional support construction is set.
The relative position of liquid line and gas piping can be made to be kept fixed by support construction, make pipe-in-pipe structure
Transfer conduit is easier to make for bending, and adapts to the needs of environment space layout, can also be reduced by rationally designing support construction
Leakage heat between external environment and internal duct.
Support construction also should ensure that the circulation in gap between inner tube 3 and outer tube 4 simultaneously, i.e. liquid or gas can be in gap
In normally circulate.The concrete form and structure of support construction are alternatively other, can be supported to inner tube 3 and outer tube 4, and protect
The mobility in gap is demonstrate,proved, this is not limited.
On the basis of the above embodiments, further, the capillary structure that 5 inside of the secondary evaporator is arranged includes imbibition
Core, the inner surface close-fitting contact of the outer surface of the liquid-sucking core and 5 shell of the secondary evaporator, in the outer of the liquid-sucking core
Gas conduit is arranged in the inner surface of 5 shell of surface or the secondary evaporator.
The present embodiment is based on above-described embodiment, and the concrete structure of 5 inside setting liquid-sucking core of secondary evaporator is illustrated.
When there is accommodating space inside secondary evaporator 5, can liquid-sucking core be set in inside, to improve the transfer capability of liquid, improve and steam
Send out heat exchange efficiency.
Imbibition core outer surface and 5 shell inner surface close-fitting contact of secondary evaporator, for reducing, secondary evaporator 5 is radial to be passed
The thermal contact resistance of heat.And gas conduit is provided between 5 shell inner surface of imbibition core outer surface and secondary evaporator, constitute gas
Working fluid flow channel, the gas working medium outside dissipation in time come out in order to liquid-sucking core surface evaporation.Gas conduit can open up
In the outer surface of liquid-sucking core, or it is opened in the inner surface of 5 shell of secondary evaporator.
Further, with reference to figure 2, liquid-sucking core 11 can be equally set in 1 interior space of evaporator.Outside liquid-sucking core 11
Surface and 1 shell of evaporator, 12 inner surface close-fitting contact, the thermal contact resistance radially conducted heat for reducing evaporator 1.And
It is provided with gas conduit 13 between 12 inner surface of 11 outer surface of liquid-sucking core and 1 shell of evaporator, constitutes gas working medium flow channel,
The gas working medium outside dissipation in time come out in order to 11 surface evaporation of liquid-sucking core.Gas conduit 13 can be opened in liquid-sucking core 11
Outer surface, or be opened in the inner surface of 1 shell 12 of evaporator.
Liquid storage device can also be set, liquid storage device is connected to the liquid-sucking core 11 inside evaporator, for storing excessive liquid
Body working medium.The liquid supply that the liquid-sucking core 11 inside evaporator 1 is adjusted by liquid storage device, improves loop heat pipe operation stability.
On the basis of the above embodiments, further, a kind of compact antigravity loop heat pipe include evaporator 1 and
Condenser 2 is connected between evaporator 1 and condenser 2 by liquid line, gas piping.Condenser 2, liquid line, evaporation
Device 1, gas piping and condenser 2 are sequentially communicated forming circuit structure.Secondary evaporator 5 is set near condenser 2, and is made
Secondary evaporator 5 is series in condenser pipe 21.Liquid line and gas piping use pipe-in-pipe structure, inner tube 3 and outer tube 4 it
Between there are certain gaps.
Liquid line and gas piping use pipe-in-pipe structure, including being liquid line, gas piping outside, also may be used
Be liquid line outside, including gas piping.Condenser pipe 21 outlet is connected with liquid line import, liquid line export and
1 import of evaporator is connected, and the outlet of evaporator 1 is connected with gas piping import, gas piping outlet and 21 import phase of condenser pipe
Even.
Above each section forms a complete circuit.According to gas-liquid Working fluid flow drag size inside loop heat pipe, with
And the flexibility requirements to transfer conduit, design the parameters such as diameter, the wall thickness of gas piping and liquid line.Carrying out cooling system
When arrangement, this loop heat pipe only takes up the space on a very tubule road on the transmit path, and only needs to a pipeline
Design is fixed, therefore can effectively save system space, easily facilitates system flexible arrangement.
Condenser 2 may include condenser pipe 21 and condensation plate body 22, or including condenser pipe 21 and fin.Condenser pipe
Road 21 can be made of copper, aluminium, steel, titanium alloy etc., or be made of the preferable material of other heat-transfer effects.Condenser pipe 21 can be with
It is sinuous coiled pipe structure, can also be pipeline structure side by side, further including other can make gas working medium be condensed into liquid
Structure type.The shape and structure of evaporator 1 and condenser 2 can be selected and set according to concrete application environmental requirement
Meter.
Embodiment 1：
The present embodiment is identical as the various embodiments described above basic structure, brief for description, in the description of the present embodiment
Cheng Zhong no longer specifically describes technical characteristic same as the previously described embodiments, to illustrate that the present embodiment is different from the various embodiments described above
Based on place：
With reference to figure 2, a kind of compact antigravity loop heat pipe provided in this embodiment on the basis of the above embodiments, steams
Hair device 1 is cylindrical-shaped structure.Liquid-sucking core 11 is provided in evaporator 1, liquid-sucking core 11 is close to one side opening of liquid line, far
The cup-shaped one side closed from liquid line.I.e. liquid-sucking core 11, which is one end, has the cylindric of opening, and open end is towards liquid line
Road.
It is equipped with baffle 14 in the end of the opening of liquid-sucking core 11 side, 11 inner space of liquid-sucking core is made to be isolated from the outside.Liquid
Pipeline passes through baffle 14, stretches into inside liquid-sucking core 11, to enable the liquid working substance in liquid line to flow directly into liquid-sucking core
In 11.
Condenser 2 includes condenser pipe 21 and condensation plate body 22, and condenser pipe 21 is snakelike pipeline structure.In condenser pipe
The region that 21 two ends are combined is provided with transformational structure 23, makes the outlet of condenser pipe 21 and liquid by transformational structure 23
Pipeline import connects, and gas piping outlet is made to be connect with 21 import of condenser pipe.Transformational structure 23 can be arranged in condenser 2
Portion can also be arranged outside condenser 2.
So that gas working medium and liquid working substance is detached by transformational structure 23, and is flowed along respective transmission path.Secondary steaming
Hair device 5 is arranged in series in condenser pipe 21, is internally provided with capillary structure 51 in secondary evaporator 5, is passed through the hair of capillary structure 51
Spy uses, and the condensed fluid in condenser 2 is driven to be flowed to evaporator 1.
The loop heat pipe is applicable to low temperature environment, when loop heat pipe works in low temperature warm area, due to loop heat pipe with
There are the larger temperature difference for external environment, inevitably in the presence of leakage heat, to increase loop heat pipe heat transfer burden and low-temperature receiver
Energy expenditure.When environment leakage heat is larger, the liquid in liquid line is probably heated, and generation is local to dryout, and causes circuit hot
Pipe job insecurity even fails.
It is generally necessary to take many insulations, such as radiation proof material is wrapped up in the external of loop heat pipe, by circuit heat
Pipe is placed in larger vacuum system can normal operation.Using the structure type of pipe-in-pipe, evaporator 1 and condenser 2 it
Between seem an only very thin transfer conduit, it is compact-sized, occupy little space, easily facilitate package radiation proof material, and
And only need the vacuum system of very little that can carry out cryogenic heat transfer work, to significantly reduce the volume of system.
Including especially taking liquid line, when gas piping structure arrangement outside, it is equivalent to outside liquid line
Provided with a low temperature cold screen.Gas piping can play liquid line effectively heat insulating function, ensure in condenser 2
Liquid working substance passes through liquid line and enters evaporator 1, improves loop heat pipe functional reliability and operation stability.
When cryogenic loop heat pipe works, condenser 2 is cooled down by low-temperature receiver.Gas working medium constantly enters cold
Condenser 2 is simultaneously condensed into liquid in condenser pipe 21.The secondary evaporator 5 being flowed into after condensed fluid accumulation near condenser 2
In, after capillary structure 51 fully infiltration, secondary evaporator 5 is heated, liquid evaporation is gas, and gas working medium is flowed into time evaporation
In the condenser pipe 21 of 5 outlet side of device, and it is condensed into liquid then flow forward again.
The condensed fluid flow forward in condenser 2 is driven by the capillarity of secondary evaporator 5.In condenser pipe 21
Liquid working substance enters liquid line by transformational structure 23, is flowed into the liquid-sucking core 11 in evaporator 1 along liquid line.When
After evaporator 1 is fully cooled by cryogenic liquid, heating evaporation device 1, heat makes to transmitting inside evaporator 1 outside liquid-sucking core 11
The liquid working substance on surface is by thermal evaporation.The gas working medium of generation flows into neighbouring gas conduit 13, then flows into gas piping.
Gas working medium enters condenser pipe 21 in gas piping end by transformational structure 23, and liquid is condensed into again in condenser pipe 21
State working medium.
At the same time, under the driving of 11 surface capillary of liquid-sucking core, make liquid working substance in condenser 2 constantly edge
It liquid line to flow and supplement into evaporator 1, working medium constantly circulates in circuit and occur gas-liquid phase transition, will evaporate
The heat of device 1 is constantly transmitted to condenser 2.After opening evaporator 1 and making cryogenic loop heat pipe normal operation, it can stop
Secondary evaporator 5 is heated, can also be continued to heat secondary evaporator 5, auxiliary drive gas-liquid two-phase working medium circulation stream with smaller heat
It is dynamic.
Embodiment 2：
The present embodiment is identical as the various embodiments described above basic structure, brief for description, in the description of the present embodiment
Cheng Zhong no longer specifically describes technical characteristic same as the previously described embodiments, to illustrate that the present embodiment is different from the various embodiments described above
Based on place：
Fig. 3 is the loop heat pipe structural schematic diagram with flat-plate evaporators 1, which is tabular, including is steamed
Send out pipeline 15 and evaporation plate body 16.Evaporation tube road 15 can be directly machined in inside evaporation plate body 16, i.e., inside insert plate body；
Evaporation tube road 15 can be made of metal tube, be then welded on evaporation plate body 16.Evaporation tube road 15 can be coiled pipe structure,
It can also be parallel pipeline.
Evaporator 1 can also be including evaporation tube road 15 and fin structure or other liquid working substance can be made to be evaporated to
The structure type of gas.The region that two ends of evaporation tube road 15 are combined is provided with evaporation transformational structure 23, passes through steaming
Hair transformational structure 23 makes 15 import of evaporation tube road export connection with liquid line, and gas piping import is made to be exported with evaporation tube road 15
Connection.
Evaporation transformational structure 23 can be arranged inside evaporator 1, can also be arranged outside evaporator 1.Pass through evaporation
Transformational structure 23 makes gas working medium and liquid working substance detach, and is flowed along respective transmission path.Flat-plate evaporators 1 are easier
It is fabricated to larger planar structure in the two-dimensional direction, is more convenient for being coupled with the radiating element that surface is larger plane, it is right
The heat of radiating element carries out transmission and dissipation.Loop heat pipe is essentially identical in its course of work embodiment 1, repeats no more.
Loop heat pipe in the present embodiment, condenser 2, liquid line, evaporator 1, gas piping and condenser 2 are successively
Connection forming circuit structure, secondary evaporator 5, liquid line and flue have been arranged in series on the condenser pipe 21 of condenser 2
Road uses pipe-in-pipe structure.The loop heat pipe shape is simple, compact-sized, occupies little space, easily facilitates in cooling system
System flexible topology；It can reliably be started and run under horizontality or antigravity state.
Especially for the loop heat pipe worked under low temperature environment, evaporator 1 can be made smoothly to drop by secondary evaporator 5
Temperature, assisted loop heat pipe start；Transfer conduit uses pipe-in-pipe structure, outer layer pipeline that can be formed to internal layer pipeline effective exhausted
Thermal protection, significantly reduces the environment leakage heat of extraneous inner layer pipeline, and is easier to wrap up radiation protection material on outer layer pipeline
Material or thermal insulation material etc. reduce the environment leakage heat of outer bound pair transfer conduit, reduce the refrigeration requirement to low-temperature receiver, improve loop heat pipe
Job stability and reliability.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of compact antigravity loop heat pipe, wherein liquid line, evaporator, gas piping and condenser are sequentially connected shape
At circuit, which is characterized in that further include：Secondary evaporator；The liquid line and the gas piping are pipe-in-pipe structure, described
Secondary evaporator is connected with the condenser pipe of the condenser.
2. compact antigravity loop heat pipe according to claim 1, which is characterized in that the pipe-in-pipe structure is specifically wrapped
It includes：Inner tube and the outer tube being set on the outside of said inner tube；There is gap between said inner tube and the outer tube, the first of said inner tube
End is connected with the first end of condenser pipe, and the second end of the condenser pipe is connected with the first end of the outer tube, said inner tube
Second end be connected with evaporator with the second end of the outer tube, said inner tube is liquid line, said inner tube and the outer tube
Between gap be gas piping or said inner tube be gap between gas piping, said inner tube and the outer tube is liquid
Body pipeline.
3. compact antigravity loop heat pipe according to claim 2, which is characterized in that further include：Transformational structure；It is described
Transformational structure is used to connect the first end of inner tube and the first end of condenser pipe and connect the first end and condenser pipe of outer tube
Second end.
4. compact antigravity loop heat pipe according to claim 3, which is characterized in that the transformational structure includes
Heart shell, the first end of the hollow shell are connected with the first end of the outer tube, and the outer tube is connected with the hollow shell
Logical, the first end of said inner tube is inserted into from the first end of the hollow shell and is pierced by from the second end of the hollow shell described
Hollow shell is connected with the first end of the condenser pipe, the third end of the second end of the condenser pipe and the hollow shell
It is connected, the second end of the condenser pipe is connected by the hollow shell with the outer tube.
5. compact antigravity loop heat pipe according to claim 4, which is characterized in that the second end of said inner tube and institute
The second end for stating outer tube is directly connected with the evaporator or the second end of said inner tube and the second end of the outer tube pass through
The transformational structure is connected with the evaporation tube road of the evaporator.
6. according to any compact antigravity loop heat pipes of claim 1-5, which is characterized in that in the secondary evaporator
Capillary structure is arranged in portion.
7. according to any compact antigravity loop heat pipes of claim 1-5, which is characterized in that further include：Secondary liquid storage
Device；The secondary liquid storage device is connected with the secondary evaporator and the condenser pipe respectively.
8. according to any compact antigravity loop heat pipes of claim 1-5, which is characterized in that further include：Air reservoir；Institute
Air reservoir is stated with the gas piping to be connected.
9. according to any compact antigravity loop heat pipes of claim 2-5, which is characterized in that in said inner tube and institute
State and support construction be set in the gap between outer tube, the lateral wall of support construction connection said inner tube and the outer tube it is interior
Side wall, for making said inner tube and the relative position of the outer tube be kept fixed.
10. compact antigravity loop heat pipe according to claim 6, which is characterized in that set inside the secondary evaporator
The capillary structure set includes liquid-sucking core, and the outer surface of the liquid-sucking core and the inner surface tight fit of the secondary evaporator shell connect
It touches, gas conduit is set in the inner surface of the outer surface of the liquid-sucking core or the secondary evaporator shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332681.XA CN108426477A (en) | 2018-04-13 | 2018-04-13 | A kind of compact antigravity loop heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810332681.XA CN108426477A (en) | 2018-04-13 | 2018-04-13 | A kind of compact antigravity loop heat pipe |
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| Publication Number | Publication Date |
|---|---|
| CN108426477A true CN108426477A (en) | 2018-08-21 |
Family
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|---|---|---|---|
| CN201810332681.XA Pending CN108426477A (en) | 2018-04-13 | 2018-04-13 | A kind of compact antigravity loop heat pipe |
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| CN106183719A (en) * | 2016-07-15 | 2016-12-07 | 西安交通大学 | A kind of system utilizing loop heat pipe regulation vehicle interior temperature |
| CN208075642U (en) * | 2018-04-13 | 2018-11-09 | 中国科学院理化技术研究所 | A kind of compact antigravity loop heat pipe |
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2018
- 2018-04-13 CN CN201810332681.XA patent/CN108426477A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020075652A1 (en) * | 2000-11-20 | 2002-06-20 | Berchowitz David M. | CPU cooling device using thermo-siphon |
| CN1637377A (en) * | 2004-01-06 | 2005-07-13 | 三菱电机株式会社 | Pump-free water-cooling system |
| CN1651845A (en) * | 2005-01-13 | 2005-08-10 | 中国科学院理化技术研究所 | Low temp loop heat pipe for deep low temp area |
| CN106183719A (en) * | 2016-07-15 | 2016-12-07 | 西安交通大学 | A kind of system utilizing loop heat pipe regulation vehicle interior temperature |
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