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CN111207612A - A composite loop heat pipe and its heat exchange assembly - Google Patents

A composite loop heat pipe and its heat exchange assembly Download PDF

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Publication number
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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China
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channel
heat
heat exchange
heat pipe
header
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CN201811401334.4A
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Chinese (zh)
Inventor
江乐新
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Changsha Xinlu Energy Technology Co ltd
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Changsha Xinlu Energy Technology Co ltd
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Priority to CN201811401334.4A priority Critical patent/CN111207612A/en
Publication of CN111207612A publication Critical patent/CN111207612A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-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
    • F28D15/02Heat-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
    • F28D15/0266Heat-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00Heat-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
    • F28D15/02Heat-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
    • F28D15/04Heat-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
    • F28D15/043Heat-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

Composite loop heat pipe and heat exchange assembly thereof
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)

1.一种复合环路热管及其换热组件,其特征在于,所述复合环路热管包括联箱A、联箱B、蒸发通道和冷凝通道,蒸发通道或冷凝通道一端与联箱A连通、另一端端与联箱B连通,联箱A、联箱B、蒸发通道和冷凝通道形成环路,组成复合环路热管结构,所述复合环路热管内部通道处于真空或负压状态,并密封有起相变换热作用的工质。1. 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, and one end of the evaporation channel or the condensation channel is communicated with the header A , the other end is connected with the header B, 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 The seal has a working medium that acts as a phase change heat. 2.根据权利要求1所述复合环路热管及其换热组件,其特征在于,所述蒸发通道和冷凝通道由一根或多根多孔通道组成,所述多孔通道为外形扁平的多孔扁管或板翅式结构;所述多孔通道的多个通道一端与联箱A连通,另一端与联箱B连通,一根多孔通道的全部或一部分形成蒸发通道或冷凝通道;将所述多孔通道的内部通道按一定配比设置为不同的内部结构,一部分通道的内部结构设置为气体阻力较小的结构(如孔径较大,或管壁较为光滑),使其成为蒸发通道;另一部分通道的内部结构设置为毛细作用较强的内部结构(如内部设置沟槽、或内部设置毛细芯),使其成为冷凝通道;所述复合环路热管中蒸发通道或冷凝通道垂直地面放置,或水平放置,或与地面程任意角度放置。2 . The composite loop heat pipe and heat exchange assembly thereof according to claim 1 , wherein the evaporation channel and the condensation channel are composed of one or more porous channels, and the porous channels are flat porous tubes with flat shapes. 3 . Or a plate-fin structure; one end of the plurality of channels of the porous channel is communicated with the header A, and the other end is communicated with the header B, and all or a part of a porous channel forms an evaporation channel or a condensation channel; The internal channels are set to different internal structures according to a certain ratio. The internal structure of some channels is set to a structure with less gas resistance (such as a larger aperture or a smoother tube wall), making it an evaporation channel; another part of the internal structure of the channel The structure is set as an internal structure with strong capillary action (such as a groove inside or a capillary core inside) to make it a condensation channel; the evaporation channel or condensation channel in the composite loop heat pipe is placed vertically on the ground, or placed horizontally, Or place it at any angle with the ground elevation. 3.根据权利要求1或权利要求2所述复合环路热管及其换热组件,其特征在于,所述复合环路热管的相邻多孔通道之间贴合翅片或热源通道或冷源通道,组成复合环路热管换热组件,所述翅片或热源通道或冷源通道可以任意组合,所述换热组件构成一种热管换热器,可自发实现气-气换热或气-液换热。3 . The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 2 , wherein the adjacent porous channels of the composite loop heat pipe are fitted with fins or heat source channels or cold source channels. 4 . , form a composite loop heat pipe heat exchange assembly, the fins or heat source channels or cold source channels can be combined arbitrarily, the heat exchange assembly constitutes a heat pipe heat exchanger, which can spontaneously realize gas-air heat exchange or gas-liquid heat exchange heat exchange. 4.根据权利要求1或权利要求2所述复合环路热管及其换热组件,其特征在于,所述多孔通道为多孔扁管时,内部通道设有平形排列的多个通道,内部通道截面形状为正方形、矩形、圆形、三角形或多边形,或者在内部通道带有内齿;当所述多孔通道为板翅式结构时,平行的平板之间设置有内翅,内翅将多孔通道隔成多个平行排列的通道;多孔通道排列方式为:多孔通道的轴线在一个平面,或一个多孔通道轴线组成的平面与另一个多孔通道轴线组成的平面平行。4. The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 2, wherein when the porous channel is a porous flat tube, the inner channel is provided with a plurality of channels arranged in a flat shape, and the inner channel has a cross section. The shape is square, rectangle, circle, triangle or polygon, or the inner channel has inner teeth; when the porous channel is a plate-fin structure, inner fins are arranged between the parallel plates, and the inner fin separates the porous channel. A plurality of channels arranged in parallel; the arrangement of the porous channels is as follows: the axis of the porous channel is in one plane, or the plane composed of the axis of one porous channel is parallel to the plane composed of the axis of the other porous channel. 5.根据权利要求1或权利要求4,所述复合环路热管及其换热组件,其特征在于,所述多孔扁管内部通道的内齿形状为矩型、三角型、Ω型、梯形、燕尾型。5. The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 4, characterized in that, the shape of the inner teeth of the inner channel of the porous flat tube is rectangular, triangular, Ω-shaped, trapezoidal, Dovetail type. 6.根据权利要求1或权利要求2或权利要求3所述复合环路热管及其换热组件,其特征在于,所述复合环路热管及其换热组件的多孔通道外侧或内侧或内外两侧贴合有翅片,所述翅片采用金属挤压成形、或冲压成形、或滚压成形、或折弯成形,所述翅片形状为Z字形、正方形、矩形、三角形、梯形、多边形、圆形、波浪形、锯齿形、王字形、山字型、树杈型或扇形。6. The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 2 or claim 3, wherein the composite loop heat pipe and the heat exchange assembly of the composite loop heat pipe and the porous channel are outside or inside or both inside and outside. The side is attached with fins, the fins are formed by metal extrusion, or stamping, or rolling, or bending, and the fins are in the shape of zigzag, square, rectangle, triangle, trapezoid, polygon, Round, wavy, zigzag, king-shaped, mountain-shaped, branch-shaped or fan-shaped. 7.根据权利要求1或权利要求2或权利要求3所述复合环路热管及其换热组件,其特征在于,所述复合环路热管及其换热组件气-气换热时,复合环路热管的加热段与冷却段之间设置有隔热板,热风通过复合环路热管换热组件的加热段,冷风通过换热组件的冷却段,换热组件按热管换热器的原理实现自发换热。7 . The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 2 or claim 3 , wherein the composite loop heat pipe and its heat exchange assembly undergo gas-to-gas heat exchange when the composite loop heat pipe and its heat exchange assembly are heated. 8 . A heat insulation plate is arranged between the heating section and the cooling section of the heat pipe, the hot air passes through the heating section of the heat exchange assembly of the composite loop heat pipe, and the cold air passes through the cooling section of the heat exchange assembly. heat exchange. 8.根据权利要求1或权利要求2或权利要求3所述复合环路热管及其换热组件,其特征在于,所述发热元件置于换热组件的底端或侧边,通过所述复合环路热管及其换热组件,以热管换热器传热的原理自发将热量传递到外侧翅片处,通过冷却风将热量散走。8. The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 2 or claim 3, wherein the heating element is placed at the bottom end or side of the heat exchange assembly, The loop heat pipe and its heat exchange components spontaneously transfer the heat to the outer fins based on the principle of heat transfer of the heat pipe heat exchanger, and dissipate the heat through the cooling air. 9.根据权利要求1或权利要求2所述复合环路热管及其换热组件,其特征在于,所述联箱B内部或外部设置有热源管,联箱B、蒸发通道、联箱A和冷凝通道形成环路热管结构,实现散热。多孔通道的内部为光管或设置内齿或内翅。在多孔通道的外侧设置翅片,所述翅片直接将多孔通道的热量导入空气,或所述翅片与多孔通道形成上下气流通道,在实现辐射散热的同时实现对流散热;所述翅片可与多孔通道一体成型、或焊接到一体、或胀接到一起。9. The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 2, wherein a heat source pipe is arranged inside or outside the header B, the header B, the evaporation channel, the header A and the The condensation channel forms a loop heat pipe structure to achieve heat dissipation. The interior of the porous channel is a light pipe or provided with internal teeth or internal fins. Fins are arranged on the outside of the porous channel, and the fins directly guide the heat of the porous channel into the air, or the fins and the porous channel form an upper and lower airflow channel, which realizes radiative heat dissipation and convection heat dissipation; the fins can be It is integrally formed with the porous channel, or welded into one piece, or expanded together. 10.根据权利要求1或权利要求2或权利要求3所述复合环路热管及其换热组件,其特征在于,所述制作工艺为整体制作成型或模块制作成型后组装,其主要制作工艺为:将多孔通道与联箱A和联箱B连接制作成一个整体,使其内部通道形成环路结构,将翅片、或热源通道、或冷源通道与多孔通道紧密贴合,采用抽真空或排气法使环路通道处于真空或负压状态。所述多孔通道与翅片或与热源通道或与冷源通道的连接方式为焊接、胀接、胶接、过盈配合、铆接或螺栓连接;所述蒸发通道或冷凝通道的内部通道与联箱A,或与联箱B的连接方式为焊接或胶接。10. The composite loop heat pipe and its heat exchange assembly according to claim 1 or claim 2 or claim 3, characterized in that, the manufacturing process is integral manufacturing or module manufacturing and then assembling, and the main manufacturing process is: : The porous channel is connected with the header A and the header B to form a whole, so that the internal channel forms a loop structure, and the fins, or the heat source channel, or the cold source channel are closely attached to the porous channel, using vacuum or The exhaust method makes the loop channel in a vacuum or negative pressure state. The connection between the porous channel and the fin or the heat source channel or the cold source channel is welding, expansion, gluing, interference fit, riveting or bolt connection; the inner channel of the evaporation channel or the condensation channel is connected with the header. A, or the connection with header B is welding or gluing.
CN201811401334.4A 2018-11-22 2018-11-22 A composite loop heat pipe and its heat exchange assembly Pending CN111207612A (en)

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Application publication date: 20200529