CN111207612A - Composite loop heat pipe and heat exchange assembly thereof - Google Patents
Composite loop heat pipe and heat exchange assembly thereof Download PDFInfo
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- CN111207612A CN111207612A CN201811401334.4A CN201811401334A CN111207612A CN 111207612 A CN111207612 A CN 111207612A CN 201811401334 A CN201811401334 A CN 201811401334A CN 111207612 A CN111207612 A CN 111207612A
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- 239000002131 composite material Substances 0.000 title claims abstract description 98
- 238000001704 evaporation Methods 0.000 claims abstract description 56
- 230000008020 evaporation Effects 0.000 claims abstract description 54
- 238000009833 condensation Methods 0.000 claims abstract description 46
- 230000005494 condensation Effects 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 25
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 230000002269 spontaneous effect Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims 2
- 230000000694 effects Effects 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 239000000112 cooling gas Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0266—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes with separate evaporating and condensing chambers connected by at least one conduit; Loop-type heat pipes; with multiple or common evaporating or condensing chambers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/04—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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention relates to a composite loop heat pipe and a heat exchange assembly thereof, wherein the composite loop heat pipe comprises a header A, a header B, an evaporation channel and a condensation channel, one end of the evaporation channel and one end of the condensation channel are connected with the header A, the other end of the evaporation channel and the other end of the condensation channel are connected with the header B, and the header A, the header B, the evaporation channel and the condensation channel form a loop to form a composite loop heat pipe structure. The internal channel of the composite loop heat pipe is in a vacuum or negative pressure state, and working media with the function of phase change heat exchange are sealed. Fins or heat source channels or cold source channels are attached between adjacent evaporation channels or adjacent condensation channels of the composite loop heat pipe to form a heat exchange assembly, and the heat exchange assembly spontaneously realizes gas-gas heat exchange or gas-liquid heat exchange. The composite loop heat pipe and the heat exchange assembly thereof have the advantages of high heat exchange efficiency, high heat flux density, high heat exchange speed, strong bearing capacity, light weight, stable structure, good frost resistance, safe operation and the like, and are a practical novel heat exchange element.
Description
Technical Field
The invention relates to the technical field of heat exchange and heat pipes, in particular to a composite loop heat pipe and a heat exchange assembly thereof.
Background
At present, heat pipes and heat pipe heat exchangers are widely applied to the industrial application fields of heat exchange, heat dissipation and the like due to the advantages of high heat transfer efficiency, high heat transfer speed, high pressure bearing, energy conservation and the like, but the traditional heat pipes and heat pipe heat exchangers have the defects of insufficient heat transfer capacity, large volume, complex manufacturing process and the like. The plate-fin heat exchanger is formed by integrally brazing an aluminum plate and an aluminum fin, has small volume, light weight and high heat transfer efficiency, but has the defects of weak bearing capacity, easy leakage and the like. The heat pipe heat exchanger manufactured by the manufacturing process similar to the plate-fin heat exchanger is mostly of a structure with communicated lower ends, and has the defects that the heat transfer capacity is not large enough, the volume heat capacity is small, the working position is influenced by gravity, and the like.
Disclosure of Invention
The present invention is directed to a composite loop heat pipe and a heat exchange assembly thereof, which uses a high-efficiency heat-conducting composite loop heat pipe as a heat-conducting element, and can realize spontaneous heat exchange without external force, such as spontaneous cooling of hot water or hot oil attached to a heating section or heat generated by an electronic element, or heat generated by the heating section is transferred to a cooling section through the loop heat pipe, so as to heat cold air or cold fluid therein. The composite loop heat pipe and the heat exchange assembly thereof have the advantages of high starting speed, low working temperature, large heat exchange amount, high heat exchange efficiency, high heat exchange speed, small volume, light weight, strong bearing capacity, remarkable energy conservation, good frost resistance, high corrosion resistance, safety and reliability, and are novel heat exchange members or heat exchange equipment with various performance advantages.
The technical scheme of the invention is as follows:
the utility model provides a composite loop heat pipe and heat transfer assembly thereof, its characterized in that, composite loop heat pipe includes header A, header B, evaporation passageway and condensing channel, evaporation passageway or condensing channel one end and header A intercommunication, other end and header B intercommunication, and header A, header B, evaporation passageway and condensing channel form the loop, constitute composite loop heat pipe structure. The internal channel of the composite loop heat pipe is in a vacuum or negative pressure state, and working media with the function of phase change heat exchange are sealed.
The present invention is further explained below.
The evaporation channel and the condensation channel are composed of one or more porous channels, and the porous channels are in flat porous flat tubes or plate-fin structures. One end of each of the plurality of channels of the porous channel is communicated with the header A, the other end of each of the plurality of channels is communicated with the header B, and all or a part of one of the plurality of porous channels forms an evaporation channel or a condensation channel. The internal channels of the porous channels are arranged into different internal structures according to a certain proportion, and the internal structures of a part of the channels are arranged into structures with smaller gas resistance (such as larger pore diameter or smoother tube wall) so as to form evaporation channels; the internal structure of the other part of the channel is provided with an internal structure with stronger capillary action (such as grooves arranged inside or capillary cores arranged inside), so that the internal structure becomes a condensation channel. The evaporation channel or the condensation channel in the composite loop heat pipe is arranged vertically to the ground, or horizontally, or at any angle with the ground.
Fins or heat source channels or cold source channels are attached between adjacent porous channels of the composite loop heat pipe to form a composite loop heat pipe heat exchange assembly, the fins or the heat source channels or the cold source channels can be combined at will, and the heat exchange assembly forms a heat pipe heat exchanger which can realize gas-gas heat exchange or gas-liquid heat exchange spontaneously.
When the porous channel is a porous flat tube, the internal channel is provided with a plurality of channels which are arranged in a flat shape, and the section of the internal channel is square, rectangular, circular, triangular or polygonal, or the internal channel is provided with internal teeth; when the porous channel is in a plate-fin structure, inner fins are arranged between the parallel flat plates and divide the porous channel into a plurality of channels which are arranged in parallel. The porous channel arrangement mode is as follows: the axes of the porous channels are in one plane, or the plane formed by the axes of one porous channel is parallel to the plane formed by the axes of the other porous channel.
The internal teeth of the internal channel of the porous flat tube are rectangular, triangular, omega-shaped, trapezoidal and dovetail-shaped; fins are attached to the outer side or the inner side and the outer side of a porous channel of the composite loop heat pipe and the heat exchange assembly of the composite loop heat pipe, the fins are formed by metal extrusion, stamping, rolling or bending, and the fins are Z-shaped, square, rectangular, triangular, trapezoidal, polygonal, circular, wavy, zigzag, herringbone, tree-fork or fan-shaped.
When the composite loop heat pipe and the heat exchange component thereof exchange heat in a gas-gas mode, a heat insulation plate is arranged between the heating section and the cooling section of the composite loop heat pipe, hot air passes through the heating section of the composite loop heat pipe heat exchange component, cold air passes through the cooling section of the heat exchange component, and the heat exchange component realizes spontaneous heat exchange according to the principle of a heat pipe heat exchanger.
The heating element is arranged at the bottom end or the side edge of the heat exchange assembly, heat is spontaneously transferred to the outer side fins by the heat transfer principle of the heat pipe exchanger through the composite loop heat pipe and the heat exchange assembly thereof, and the heat is dissipated by cooling air.
A heat source pipe is arranged inside or outside the header B, and the header B, the evaporation channel, the header A and the condensation channel form a loop heat pipe structure to realize heat dissipation. The interior of the porous channel is a light pipe or is provided with internal teeth or internal fins. The fins are arranged on the outer sides of the porous channels and directly guide heat of the porous channels into air, or the fins and the porous channels form an upper airflow channel and a lower airflow channel, so that radiation heat dissipation is realized, and meanwhile, convection heat dissipation is realized. The fins may be integrally formed with the porous channel, or welded to one piece, or expanded together. The structure is particularly suitable for manufacturing a heating radiator.
The manufacturing process is an integral manufacturing and forming process or a module manufacturing and forming and then assembling process, and the main manufacturing process comprises the following steps: the multi-hole channel, the header A and the header B are connected to form a whole, the inner channel of the multi-hole channel forms a loop structure, the fin, the heat source channel or the cold source channel is tightly attached to the multi-hole channel, and the loop channel is in a vacuum or negative pressure state by adopting a vacuumizing or exhausting method. The connection mode of the porous channel and the fin or the heat source channel or the cold source channel is welding, expansion joint, cementing, interference fit, riveting or bolt connection. The connection mode of the internal channel of the evaporation channel or the condensation channel and the header A or the header B is welding or cementing.
The header A, the header B, the evaporation channel, the condensation channel, the heat source channel, the cold source channel and the fin material can be respectively metal (such as aluminum and aluminum alloy), composite material or high polymer material.
The inner hole of the evaporation channel is larger than that of the condensation channel; or when the inner hole of the evaporation channel is not provided with inner teeth, the inner hole of the condensation channel is provided with inner teeth; or a capillary core is added in the condensation channel; other methods of wicking the condensing channels over the evaporating channels.
The composite loop heat pipe and the heat exchange assembly thereof are different from the traditional heat exchanger, and the basic working principle is as follows: the heating section of the composite loop heat pipe absorbs the heat of a heat source, the working medium evaporates, the heat is rapidly transmitted to the cooling section through a part of channels (spontaneously formed evaporation channels) of the porous channels in the composite loop heat pipe, then the heat is released through the cooling section, the working medium in the heat pipe is condensed in the cooling section, and flows back to the heating section from a part of channels (spontaneously formed condensation channels) of the porous channels in the composite loop heat pipe, and the circulation is performed in such a way that the heat of the heating section is continuously and spontaneously transmitted to the cooling section. The evaporation channel and/or the condensation channel are/is composed of one or more porous channels, in the porous channels, the evaporation channel or the condensation channel is randomly distributed and generated in the working process of the composite loop heat pipe, and when the working medium is heated and evaporated, the gasified working medium has small selective resistance or is beneficial to the flowing of gas from the evaporation section to the cooling section; when the working medium releases heat and is condensed, the liquefied working medium selects a channel with stronger capillary action or favorable for backflow to flow back to the heating section from the cooling section. The heating section absorbs heat from the fins of the heat exchange assembly or absorbs heat from the heat source channel or absorbs heat from the lower plate of the heat exchange assembly; the cooling section releases heat to the fins or the cold source channel.
From the above, the invention discloses a composite loop heat pipe and a heat exchange assembly thereof, which have the following positive effects:
(1) the evaporation channel and the condensation channel of the composite loop heat pipe are respectively connected in parallel to the pipeline inside the header A and the pipeline inside the header B to form a loop heat pipe structure, so that an internal phase change heat transfer working medium flows along the path with the minimum resistance inside the channels when the heat pipe works, the heat transfer performance of the heat pipe is greatly improved, and the heat exchange capacity of the heat pipe is higher.
(2) The composite loop heat pipe and the heat exchange assembly thereof adopt the loop heat pipe as a heat conducting element and are integrally assembled and welded with the fins or the heat source channel or the cold source channel, so that the composite loop heat pipe is more convenient to manufacture, and has large heat exchange power per unit weight, small volume and compact structure.
(3) Because the composite loop heat pipe forms loop heat transfer, the heat transfer directions of the composite loop heat pipe and the heat exchange assembly are not influenced by gravity, and horizontal heat transfer or antigravity heat transfer can be realized.
(4) The composite loop heat pipe and the heat exchange assembly thereof can be divided into more than two modules, and the composite loop heat pipe and the heat exchange assembly thereof are manufactured in a module mode, so that the composite loop heat pipe is more convenient to install and maintain and has lower cost.
(5) The composite loop heat pipe and the heat exchange assembly thereof are used as a heat pipe heat exchanger, negative pressure is formed in a channel, the added working medium is less, and compared with a plate-fin heat exchanger, the risk of liquid leakage is lower.
Drawings
Fig. 1 is a schematic diagram of a composite loop heat pipe and a heat exchange assembly thereof in embodiment 1 of the invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a schematic diagram of embodiment 2 of the composite loop heat pipe and the heat exchange assembly thereof according to the present invention.
Fig. 4 is a sectional view taken along line B-B of fig. 3.
Fig. 5 is an enlarged view of the internal teeth of the porous channel of fig. 2 and 4.
Fig. 6 is a schematic diagram of a composite loop heat pipe and a heat exchange assembly thereof in embodiment 3 of the invention.
Fig. 7 is a schematic diagram of a composite loop heat pipe and a heat exchange assembly thereof in embodiment 4 of the invention.
Fig. 8 is a schematic diagram of a composite loop heat pipe and a heat exchange assembly thereof in embodiment 5 of the invention.
Fig. 9 and fig. 10 are schematic diagrams of a composite loop heat pipe and a heat exchange assembly thereof according to embodiment 6 of the present invention.
Fig. 11 to 17 are schematic diagrams of a composite loop heat pipe and a heat exchange assembly thereof according to embodiment 7 of the present invention. Wherein:
FIG. 11 is a composite loop heat pipe structure without external fins;
FIG. 12 is a cross-sectional view taken along line C-C of FIG. 11;
FIG. 13 is an enlarged view of the porous channel and internal teeth of FIG. 12;
FIG. 14 is a schematic structural diagram of a composite loop heat pipe with external fins and a heat exchange assembly thereof;
FIG. 15 is a sectional top view taken along line D-D of FIG. 14;
fig. 16 and 17 are sectional top views of a composite loop heat pipe externally provided with another type of fin and a heat exchange assembly thereof.
Schematic illustration of the embodiment
In the figure:
1-header A2-evaporation channel 3-header B4-condensation channel
5-channel gap 6-fin 7-partition
8-heat source channel 9-cold source channel 10-heat source pipe
11-heating element.
Detailed Description
In order to better understand the composite loop heat pipe and the heat exchange assembly thereof of the present invention, the following describes the composite loop heat pipe and the heat exchange assembly thereof in detail with reference to the embodiments, but the scope of protection of the composite loop heat pipe and the heat exchange assembly thereof of the present invention is not limited to the scope shown in the embodiments.
Example 1: as shown in fig. 1, the composite loop heat pipe is composed of a header a1, an evaporation channel 2, a header B3 and a condensation channel 4, wherein the evaporation channel 2 or the condensation channel 4 is composed of porous channels as shown in fig. 2, the porous channels are arranged side by side, and channel gaps 5 are left between the porous channels. The inner walls of the porous channels are smooth or provided with internal teeth, and fig. 5 is an enlarged illustration of the internal teeth of the porous channels of fig. 2. When the composite loop heat pipe works, heat enters the composite loop heat pipe from the heating section (such as the bottom plate or the lower half part of the composite loop heat pipe), the working medium is heated and evaporated, the heat is brought to the cooling section (such as the upper top plate or the upper half part of the composite loop heat pipe) along the evaporation channel 2 and is dissipated from the cooling section, at the moment, the working medium is condensed and flows back to the heating section along the condensation channel 4, and circulation is carried out, so that the heat of the heating section is continuously transferred to the cooling section. The evaporation channel 2 or the condensation channel 4 is not limited to the arrangement shown in fig. 1, but is formed spontaneously by gas-liquid two-phase flow in the composite loop heat pipe during operation, and the header a1, the evaporation channel 2, the header B3 and the condensation channel 4 form a loop heat pipe structure.
Example 2: as shown in fig. 3 and 4, the multi-hole channel in the composite loop heat pipe is not limited to only one header a as described in example 1, the header a of this embodiment is divided into four, and the header B shares one, and the operation principle is the same as that of example 1. The inner walls of the porous channels are smooth or provided with internal teeth, and fig. 5 is also an enlarged illustration of the internal teeth of the porous channels of fig. 4.
Example 3: as shown in fig. 6, the composite loop heat pipe and the heat exchange assembly thereof are a gas-gas heat exchanger, and are composed of a header a1, an evaporation channel 2, a header B3, a condensation channel 4, fins 6, and a partition 7, wherein the fins 6 are arranged in the channel gap 5, so that the fins 6 are tightly attached to the porous channel, the partition 7 divides the heat exchange area into a heating section and a cooling section, hot air enters the channel gap 5 from the heating section, the fins 6 are heated to transfer heat to the heating section of the porous channel, the working medium is heated to evaporate to form the evaporation channel 2 along the channel with small resistance, and is transferred to the header a1, the heat is transferred to the fins 6 from the cooling section, and then is transferred to cold air, the working medium releases heat and condenses to enter the condensation channel 4, thereby realizing the. The composite loop heat pipe and the heat exchange assembly thereof are different from a common heat pipe heat exchanger, and the composite loop heat pipe and the heat exchange assembly thereof are a high-efficiency heat pipe heat exchanger forming an optimized working medium circulation loop.
Example 4: as shown in fig. 7, this embodiment is a schematic view of an embodiment of liquid-gas heat exchange of the composite loop heat pipe and the heat exchange assembly thereof of the present invention, in this embodiment, a portion of the composite loop heat pipe, which is attached to the heat source channel 8, is a heating section, and a portion of the composite loop heat pipe, which is attached to the fin 6, is a cooling section. The composite loop heat pipe and the heat exchange assembly thereof are composed of a header A1, an evaporation channel 2, a header B3, a condensation channel 4, fins 6 and a heat source channel 8, wherein the evaporation channel 2 or the condensation channel 4 is composed of porous channels, the porous channels are arranged side by side, a channel gap 5 is reserved between the porous channels, the fins 6 are arranged in the channel gap 5, and the fins 6 are tightly attached to the porous channels. When the heat exchanger works, a heat source flows into the heat exchanger from the heat source channel 8, the working medium is heated and evaporated, and the heat is carried to be transmitted upwards to the header A1 through the evaporation channel 2; when heat passes through the cooling section, the heat is transmitted to the cold air in the channel gap 5 through the fins 6, the working medium releases heat and condenses, the working medium is refluxed through the condensing channel 4, and the circulation is carried out, so that the gas-liquid heat exchange process is realized. The header a1, the evaporation passage 2, the header B3, and the condensation passage 4 form a loop heat pipe structure.
Example 5: as shown in fig. 8, this embodiment is a schematic view of a composite loop heat pipe and a gas-liquid heat exchange embodiment of a heat exchange assembly thereof according to the present invention, in this embodiment, a portion of the composite loop heat pipe, which is attached to a cold source channel 9, is a cooling section, and a portion of the composite loop heat pipe, which is attached to a fin 6, is a heating section. The loop heat pipe gas-liquid radiator is composed of a header A1, an evaporation channel 2, a header B3, a condensation channel 4, fins 6 and a cold source channel 9, wherein the evaporation channel 2 or the condensation channel 4 is composed of porous channels, the porous channels are arranged side by side, a channel gap 5 is reserved between the porous channels, the fins 6 are arranged in the channel gap 5, and the fins 6 are tightly attached to the porous channels. When the device works, a heat source of the heating section transfers heat to the fins 6 through the channel gaps 5, and the working medium in the evaporation channel 2 is heated and evaporated to enter the header A1; when the working medium passes through the cooling section, the working medium emits heat to be condensed and flows back to the heating section, the working medium forms a loop through the evaporation channel 2, the header A1, the condensation channel and the header B3, the loop is circulated and reciprocated, the heat of the heating section is continuously and spontaneously transmitted to the cooling section, and the gas-liquid heat exchange is realized.
Example 6: as shown in fig. 9, a heating element 11 is disposed at the bottom of the composite loop heat pipe and the heat exchange assembly thereof; as shown in fig. 10, a heating element 11 is disposed on the side of the composite loop heat pipe and its heat exchange assembly. The composite loop heat pipe is composed of a header A1, an evaporation channel 2, a header B3, a condensation channel 4, fins 6 and a heating element 11, wherein the evaporation channel 2 and the condensation channel 4 are composed of porous channels, the porous channels are arranged side by side, a channel gap 5 is reserved between the porous channels, heat is transmitted to the header B3 from the heating element 11, a working medium is heated and evaporated to enter the evaporation channel 2, the working medium is transmitted to the header A1 along the axial direction of the channel, the heat is transmitted to the fins 6 at the porous channels, the working medium releases heat and condenses, and flows back to the header B through the condensation channel, and the cycle is repeated, so that the heat of the heating element 11 is spontaneously dissipated into cooling gas or air. The cooling gas is in natural circulation or forced circulation. The evaporation channel 2 or the condensation channel 4 of the composite loop heat pipe is vertically arranged or horizontally arranged or forms any angle with the horizontal.
Example 7: as shown in fig. 11 to 17, the composite loop heat pipe and the heat exchange assembly thereof according to this embodiment are a heat pipe radiator, and are particularly suitable for building heating. The heat source tube 10 is placed inside or outside the header B3. As shown in fig. 11, the heat source tube 10 is placed inside the header B3. The composite loop heat pipe is composed of a header B3, an evaporation channel 2, a header A1 and a condensation channel 4, wherein the evaporation channel 2 or the condensation channel 4 is composed of porous channels, inner holes of the porous channels are square, rectangular, circular, oval or other shapes, inner teeth or inner fins can be arranged inside the porous channels, and the porous channels are arranged side by side. During operation, heat flows into header B3 from heat source pipe 10, working medium is heated and evaporates and gets into evaporation channel 2, exchange heat with air or cooling gas in the passage clearance 5 in the outside of porous channel or header A1, in dispersing the heat to air or gas, then, working medium condensation and through condensing channel 4 backward flow to header B3, so circulation is reciprocal, the heat gets into the radiator through heat source pipe 10, working medium forms the return circuit at header B3, evaporation channel 2, header A1 and condensing channel 4, form the loop heat pipe structure and carry out spontaneous heat transfer, thereby realize the spontaneous heat transfer process of the heat dissipation that brings heat source pipe 10 into. To increase the heat exchange area to increase the heat exchange with the gas side, fins 6 (as shown in fig. 14) may be provided on the outside of the porous channel, and the fins 6 may be integrally formed with the porous channel, or welded to the porous channel, or expanded together. Fig. 15 is a sectional top view of fig. 14, and it can be seen from fig. 15 that the additional fins 6 not only increase the heat exchange area with air (or gas) and increase the radiation heat dissipation capacity, but also the fins 6 and the porous channels form convection channels to facilitate the convection heat exchange of air (or gas). Fig. 16 and 17 are sectional plan views of the heat sink structure having the outer fins 6 different from those of fig. 15, similarly to the case shown in fig. 15.
Claims (10)
1. The utility model provides a composite loop heat pipe and heat transfer assembly thereof, its characterized in that, composite loop heat pipe includes header A, header B, evaporation channel and condensing channel, evaporation channel or condensing channel one end and header A intercommunication, other end and header B intercommunication, and header A, header B, evaporation channel and condensing channel form the loop, constitute composite loop heat pipe structure, composite loop heat pipe inner channel is in vacuum or negative pressure state to sealed has the working medium that plays the heat transfer effect of phase transition.
2. The composite loop heat pipe and the heat exchange assembly thereof as claimed in claim 1, wherein the evaporation channel and the condensation channel are composed of one or more porous channels, and the porous channels are in a flat shape and are in a porous flat pipe or plate-fin structure; one end of each of the plurality of channels of the porous channel is communicated with the header A, the other end of each of the plurality of channels is communicated with the header B, and all or part of one porous channel forms an evaporation channel or a condensation channel; the internal channels of the porous channels are arranged into different internal structures according to a certain proportion, and the internal structures of a part of the channels are arranged into structures with smaller gas resistance (such as larger pore diameter or smoother tube wall) so as to form evaporation channels; the internal structure of the other part of the channel is set to be an internal structure with stronger capillary action (for example, grooves are arranged inside or capillary cores are arranged inside), so that the internal structure becomes a condensation channel; the evaporation channel or the condensation channel in the composite loop heat pipe is arranged vertically to the ground, or horizontally, or at any angle with the ground.
3. The composite loop heat pipe and the heat exchange assembly thereof as claimed in claim 1 or claim 2, wherein fins, heat source channels or cold source channels are attached between adjacent porous channels of the composite loop heat pipe to form the composite loop heat pipe heat exchange assembly, the fins, the heat source channels or the cold source channels can be combined at will, and the heat exchange assembly forms a heat pipe heat exchanger capable of spontaneously realizing gas-gas heat exchange or gas-liquid heat exchange.
4. The composite loop heat pipe and the heat exchange assembly thereof as claimed in claim 1 or claim 2, wherein when the porous channel is a porous flat pipe, the internal channel is provided with a plurality of channels which are arranged in a flat shape, and the cross section of the internal channel is square, rectangular, circular, triangular or polygonal, or the internal channel is provided with internal teeth; when the porous channel is of a plate-fin structure, inner fins are arranged between the parallel flat plates and divide the porous channel into a plurality of channels which are arranged in parallel; the porous channel arrangement mode is as follows: the axes of the porous channels are in one plane, or the plane formed by the axes of one porous channel is parallel to the plane formed by the axes of the other porous channel.
5. The composite loop heat pipe and the heat exchange assembly thereof as claimed in claim 1 or claim 4, wherein the internal teeth of the internal channels of the porous flat pipe are rectangular, triangular, omega-shaped, trapezoidal and dovetail-shaped.
6. The composite loop heat pipe and the heat exchange assembly thereof as claimed in claim 1, claim 2 or claim 3, wherein fins are attached to the outer side or the inner side or both the inner side and the outer side of the porous channel of the composite loop heat pipe and the heat exchange assembly thereof, the fins are formed by metal extrusion, stamping, rolling or bending, and the fins are in a zigzag shape, a square shape, a rectangular shape, a triangular shape, a trapezoidal shape, a polygonal shape, a circular shape, a wavy shape, a zigzag shape, a herringbone shape, a crotch shape or a fan shape.
7. The composite loop heat pipe and the heat exchange assembly thereof as claimed in claim 1, claim 2 or claim 3, wherein when the composite loop heat pipe and the heat exchange assembly thereof exchange heat in a gas-gas manner, a heat insulation plate is arranged between the heating section and the cooling section of the composite loop heat pipe, hot air passes through the heating section of the heat exchange assembly of the composite loop heat pipe, cold air passes through the cooling section of the heat exchange assembly, and the heat exchange assembly realizes spontaneous heat exchange according to the principle of a heat pipe heat exchanger.
8. The composite loop heat pipe and the heat exchange assembly thereof as claimed in claim 1, claim 2 or claim 3, wherein the heating element is disposed at the bottom end or the side edge of the heat exchange assembly, and the heat is spontaneously transferred to the outer fin by the heat transfer principle of the heat pipe heat exchanger through the composite loop heat pipe and the heat exchange assembly thereof, and is dissipated by cooling air.
9. A composite loop heat pipe and a heat exchange assembly thereof as claimed in claim 1 or claim 2, wherein the inside or outside of the header B is provided with a heat source pipe, and the header B, the evaporation channel, the header a and the condensation channel form a loop heat pipe structure to realize heat dissipation. The interior of the porous channel is a light pipe or is provided with internal teeth or internal fins. Fins are arranged on the outer sides of the porous channels, and directly guide heat of the porous channels into air, or the fins and the porous channels form an upper airflow channel and a lower airflow channel, so that radiation heat dissipation is realized, and meanwhile, convection heat dissipation is realized; the fins may be integrally formed with the porous channel, or welded to one piece, or expanded together.
10. A composite loop heat pipe and its heat exchange assembly as claimed in claim 1, claim 2 or claim 3, wherein the manufacturing process is integral manufacturing molding or module manufacturing molding and then assembling, and the main manufacturing process is as follows: the multi-hole channel, the header A and the header B are connected to form a whole, the inner channel of the multi-hole channel forms a loop structure, the fin, the heat source channel or the cold source channel is tightly attached to the multi-hole channel, and the loop channel is in a vacuum or negative pressure state by adopting a vacuumizing or exhausting method. The connection mode of the porous channel and the fin or the heat source channel or the cold source channel is welding, expansion joint, cementing, interference fit, riveting or bolt connection; the connection mode of the internal channel of the evaporation channel or the condensation channel and the header A or the header B is welding or cementing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401334.4A CN111207612A (en) | 2018-11-22 | 2018-11-22 | Composite loop heat pipe and heat exchange assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811401334.4A CN111207612A (en) | 2018-11-22 | 2018-11-22 | Composite loop heat pipe and heat exchange assembly thereof |
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| Publication Number | Publication Date |
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| CN111207612A true CN111207612A (en) | 2020-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811401334.4A Pending CN111207612A (en) | 2018-11-22 | 2018-11-22 | Composite loop heat pipe and heat exchange assembly thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112074072A (en) * | 2020-08-10 | 2020-12-11 | 中国科学院高能物理研究所 | Loop heat pipe type photon absorber and heat exchange method thereof |
| WO2023197578A1 (en) * | 2022-04-14 | 2023-10-19 | 中兴通讯股份有限公司 | Two-phase radiating fin and heat sink |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069457A1 (en) * | 2000-05-04 | 2004-04-15 | Korea Institute Of Machinery & Materials | Multi-channeled loop heat transfer device with high efficiency fins |
| CN1801483A (en) * | 2005-11-18 | 2006-07-12 | 华南理工大学 | Capillary pump cooler with micro-groove wing structure and its manufacturing method |
| JP2009076622A (en) * | 2007-09-20 | 2009-04-09 | Yaskawa Electric Corp | Heat sink and electronic apparatus using the same |
| CN101819000A (en) * | 2010-04-23 | 2010-09-01 | 南京工业大学 | Disconnect-type phase transition heat exchanger |
| CN103217043A (en) * | 2013-05-14 | 2013-07-24 | 山东科院天力节能工程有限公司 | Parallel flow pulsating heat pipe exchanger |
| CN103344052A (en) * | 2013-07-19 | 2013-10-09 | 湖南蓝海能源科技有限公司 | Solar collector system based on heat pipe natural circulation |
| CN104633960A (en) * | 2015-03-09 | 2015-05-20 | 中国石油大学(华东) | Loop heat pipe solar system with fins of different heights in heat collection pipes |
| CN105277028A (en) * | 2015-11-16 | 2016-01-27 | 中国电子科技集团公司第十研究所 | Thermal control loop heat pipe of integrated structure |
| CN209802161U (en) * | 2018-11-22 | 2019-12-17 | 长沙馨麓能源科技有限公司 | loop heat pipe assembly and heat pipe exchanger thereof |
-
2018
- 2018-11-22 CN CN201811401334.4A patent/CN111207612A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040069457A1 (en) * | 2000-05-04 | 2004-04-15 | Korea Institute Of Machinery & Materials | Multi-channeled loop heat transfer device with high efficiency fins |
| CN1801483A (en) * | 2005-11-18 | 2006-07-12 | 华南理工大学 | Capillary pump cooler with micro-groove wing structure and its manufacturing method |
| JP2009076622A (en) * | 2007-09-20 | 2009-04-09 | Yaskawa Electric Corp | Heat sink and electronic apparatus using the same |
| CN101819000A (en) * | 2010-04-23 | 2010-09-01 | 南京工业大学 | Disconnect-type phase transition heat exchanger |
| CN103217043A (en) * | 2013-05-14 | 2013-07-24 | 山东科院天力节能工程有限公司 | Parallel flow pulsating heat pipe exchanger |
| CN103344052A (en) * | 2013-07-19 | 2013-10-09 | 湖南蓝海能源科技有限公司 | Solar collector system based on heat pipe natural circulation |
| CN104633960A (en) * | 2015-03-09 | 2015-05-20 | 中国石油大学(华东) | Loop heat pipe solar system with fins of different heights in heat collection pipes |
| CN105277028A (en) * | 2015-11-16 | 2016-01-27 | 中国电子科技集团公司第十研究所 | Thermal control loop heat pipe of integrated structure |
| CN209802161U (en) * | 2018-11-22 | 2019-12-17 | 长沙馨麓能源科技有限公司 | loop heat pipe assembly and heat pipe exchanger thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112074072A (en) * | 2020-08-10 | 2020-12-11 | 中国科学院高能物理研究所 | Loop heat pipe type photon absorber and heat exchange method thereof |
| WO2023197578A1 (en) * | 2022-04-14 | 2023-10-19 | 中兴通讯股份有限公司 | Two-phase radiating fin and heat sink |
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