CN114152126A

CN114152126A - Heat pipe heat exchanger and heat dissipation device

Info

Publication number: CN114152126A
Application number: CN202010931344.XA
Authority: CN
Inventors: 徐洪波; 杨露露; 王慧慧; 王泽民; 田长青
Original assignee: Technical Institute of Physics and Chemistry of CAS; Songz Automobile Air Conditioning Co Ltd
Current assignee: Technical Institute of Physics and Chemistry of CAS; Songz Automobile Air Conditioning Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2022-03-08

Abstract

The embodiment of the invention provides a heat pipe heat exchanger and a heat dissipation device. Wherein, heat pipe exchanger includes: the heat pipe set, the liquid collecting plate and the heat exchange fins. The heat pipe set consists of a plurality of heat exchange pipes, the upper part of the heat exchange pipe set is a condensation section, and the lower part of the heat exchange pipe set is an evaporation section. The heat exchange tubes are connected through the heat exchange fins, the lower end parts of the heat tube sets are connected with the liquid collecting plate and communicated with the liquid storage cavity of the liquid collecting plate, and the liquid collecting plate is provided with a filling opening. The heat pipe heat exchanger with the structure can effectively ensure the packaging quality of the heat pipe set. Meanwhile, compared with the heat pipe heat exchanger in the prior art, the heat pipe heat exchanger has the advantages of simple and compact structure and convenience in operation.

Description

Heat pipe heat exchanger and heat dissipation device

Technical Field

The invention relates to the technical field of heat conduction, in particular to a heat pipe heat exchanger and a heat dissipation device.

Background

The heat pipe is a high-efficiency heat transfer element, and heat is transferred by utilizing evaporation and condensation of working media in the pipe. The heat pipe has many excellent characteristics, such as high heat-conducting property, excellent isothermal property, reversible heat flow direction, thermal diode and thermal switch property, etc. When the gravity heat pipe is applied, the evaporation section is positioned below, the condensation section is positioned above, and steam flows to the condensation section under the action of pressure difference to release heat to be condensed into liquid and flows back to the evaporation section under the action of gravity. The heat pipe has excellent performance, so that the heat pipe is widely applied to the fields of heat dissipation of microelectronic devices, air conditioning systems, heat exchangers and the like.

And assembling a plurality of heat pipes together to form the heat pipe exchanger. Most of the existing heat pipe heat exchangers adopt a partition plate to separate an evaporation section from a condensation section and fix the heat pipes, each heat pipe needs to be independently vacuumized and filled with working media, the process is complicated, and the packaging quality of each heat pipe cannot be guaranteed to be completely the same. The evaporator and the condenser are respectively arranged by a part of heat pipe heat exchangers, and the evaporator and the condenser are connected with a liquid pipeline through a steam pipeline. For example, patent publication No. CN103808180B discloses a heat pipe cooling device, in which a heat pipe exchanger includes a condenser disposed in an external circulation air duct and an evaporator disposed in an internal circulation air duct, the internal and external circulation air ducts are partitioned into relatively closed spaces by a partition plate, an outlet of the evaporator is connected to an inlet of the condenser by a steam rising pipe, and an outlet of the condenser is connected to an inlet of the evaporator by a liquid falling pipe. The advantage of this arrangement is that the evaporator and condenser are relatively flexible in location, but they take up a relatively large amount of space and the heat exchanger is not compact overall.

In order to ensure the packaging quality, patent publication No. CN101556121B discloses a flat heat pipe heat exchanger, which is composed of an intermediate gas-liquid separation chamber, a condensing unit and an evaporating unit. The condensing unit consists of a gas collecting pipe, a gas conveying pipe, a condensing flat pipe group and a heat exchange sheet; the evaporation unit consists of a liquid collecting pipe, a liquid conveying pipe, an evaporation flat pipe group and a heat exchange sheet; the middle gas-liquid separation chamber is provided with a liquid guide channel and a liquid storage cavity, and the condensing unit is communicated with the evaporating unit through the middle gas-liquid separation chamber. Although the design improves the packaging quality and the heat exchange efficiency, the structure is relatively complex.

Meanwhile, the existing heat pipe heat exchanger focuses on fluid heat exchange, and the heat exchange is enhanced by uniformly distributing and replacing heat fins on an evaporation section and a condensation section, so that the heat pipe heat exchanger is not suitable for heat dissipation of solid heat sources such as lithium ion batteries.

Disclosure of Invention

The embodiment of the invention provides a heat pipe exchanger and a heat dissipation device, which are used for solving the problems that the heat pipe exchanger in the prior art is complex in structure and complex in process, the packaging quality of a heat pipe set is difficult to guarantee, and the like.

According to an embodiment of the first aspect of the present invention, there is provided a heat pipe heat exchanger, including: the heat pipe set, the liquid collecting plate and the heat exchange fins. The heat pipe set consists of a plurality of heat exchange pipes, the upper part of the heat exchange pipe set is a condensation section, and the lower part of the heat exchange pipe set is an evaporation section. The heat exchange tubes are connected through the heat exchange fins, the lower end parts of the heat tube sets are connected with the liquid collecting plate and communicated with the liquid storage cavity of the liquid collecting plate, and the liquid collecting plate is provided with a filling opening.

According to an embodiment of the present invention, a plurality of fins spaced apart from each other are provided inside each of the heat exchange tubes, wherein the plurality of fins divide an inner cavity of the heat exchange tubes into a plurality of microchannels spaced apart from each other, each of the microchannels being in communication with the liquid storage chamber of the liquid collector.

According to the embodiment of the invention, each heat exchange fin is bent to form an S-shaped structure, wherein the bent part of the S-shaped structure of the heat exchange fin is connected between the outer surfaces of two adjacent heat exchange tubes.

According to an embodiment of the invention, each heat exchange tube is configured as a flat tube structure, wherein the bends of the S-shaped structures of the heat exchange fins are connected between the flat faces of the flat tube structures, and the arrangement of each flat tube structure is in the form of a rectangular array.

According to an embodiment of the invention, the heat exchange fins are arranged at least on the condensation section of the heat pipe set.

According to the embodiment of the invention, the heat exchange fins are arranged on the condensation section and the evaporation section of the heat pipe set at the same time, and a partition plate is arranged between the condensation section and the evaporation section.

According to an embodiment of the second aspect of the present invention, there is provided a heat dissipating apparatus comprising a case and the heat pipe heat exchanger as described above provided in the case, wherein a plurality of the heat pipe heat exchangers are arranged in a rectangular array form with each other.

According to the embodiment of the invention, the box body is provided with the fan set, and the fan set is arranged on the box body corresponding to the condensation section and/or the evaporation section of the heat pipe heat exchanger.

According to the embodiment of the invention, the box body is also provided with an air inlet grille, wherein the air inlet grille comprises a cold fluid air inlet grille arranged as a cold fluid inlet and a hot fluid air inlet grille arranged as a hot fluid inlet.

According to the embodiment of the invention, the cold fluid air inlet grille is arranged on the box body corresponding to the condensation section of the heat pipe heat exchanger, and the hot fluid air inlet grille is arranged on the box body corresponding to the evaporation section of the heat pipe heat exchanger.

In the heat pipe exchanger provided by the embodiment of the invention, the heat pipe set consists of a plurality of heat exchange pipes, the upper part of the heat exchange pipe set is a condensation section, and the lower part of the heat exchange pipe set is an evaporation section. The heat exchange tubes are connected through the heat exchange fins, the lower end parts of the heat tube sets are connected with the liquid collecting plate and communicated with the liquid storage cavity of the liquid collecting plate, and the liquid collecting plate is provided with a filling opening. The vacuumizing and filling equipment is connected with a filling port, and each heat exchange tube in the heat tube set is communicated with the liquid storage cavity of the liquid collecting plate, so that each heat exchange tube can be used for uniformly completing the vacuumizing and working medium filling work of the heat tube set through the filling port and the liquid collecting plate. Through the structure arrangement, compared with the existing heat pipe heat exchanger, the heat pipe heat exchanger has the advantages of simple structure, compact integral structure, smaller occupied space, simple manufacturing process and convenient operation.

Further, in the heat dissipation device provided by the embodiment of the invention, because the heat pipe heat exchanger is adopted, the advantages are also provided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a heat pipe heat exchanger according to an embodiment of the present invention;

FIG. 2 is a schematic view of a connection structure of heat exchange fins of a heat pipe heat exchanger according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a heat exchange tube of a heat pipe heat exchanger according to an embodiment of the present invention;

fig. 4 is a schematic view of a combined structure of a heat pipe heat exchanger applied to a square soft package lithium battery according to an embodiment of the present invention;

fig. 5 is a first schematic structural diagram of a heat dissipation device according to an embodiment of the present invention;

fig. 6 is a first schematic view of an appearance structure of a heat dissipation device according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram II of a heat pipe heat exchanger according to an embodiment of the present invention;

fig. 8 is a second schematic structural diagram of a heat dissipation device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an appearance of a heat dissipation device according to an embodiment of the present invention;

FIG. 10 is a front view of FIG. 9;

fig. 11 is a sectional view taken along a-a of fig. 10.

Reference numerals:

1: a heat pipe set; 101: a heat exchange pipe; 102: ribs; 103: a microchannel; 2: a liquid collecting plate; 3: heat exchange fins; 4: an infusion port; 5: a conduit; 6: a partition plate; 7: a box body; 8: a fan set; 9: square soft package lithium batteries; 10: a cold fluid air inlet grille; 11: hot fluid air inlet grille.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples described in this specification to make the purpose, technical solution, and advantages of the embodiments of the present invention more clear, and the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are a part of embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The heat pipe heat exchanger and the heat dissipation device according to the embodiment of the present invention will be described with reference to fig. 1 to 11. It should be understood that the following description is only exemplary embodiments of the present invention and does not constitute any particular limitation of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a heat pipe heat exchanger. The heat pipe exchanger includes: the heat pipe set 1, the liquid collecting plate 2 and the heat exchange fins 3. The heat pipe set 1 is composed of a plurality of heat exchange pipes 101, and the upper part is a condensation section and the lower part is an evaporation section. The heat exchange tubes 101 are connected through heat exchange fins 3, the lower end of the heat tube set 1 is connected with the liquid collecting plate 2 and communicated with the liquid storage cavity of the liquid collecting plate 2, and the liquid collecting plate 2 is provided with a filling opening 4. The vacuumizing filling equipment is connected with the filling port 4, each heat exchange tube 101 in the heat tube set 1 is communicated with the liquid storage cavity of the liquid collecting plate 2, and therefore each heat exchange tube 101 is used for finishing the vacuumizing and working medium filling work of the heat tube set 1 through the filling port 4 and the liquid collecting plate 2 in a unified mode. Through the structure arrangement, compared with the existing heat pipe heat exchanger, the heat pipe heat exchanger has the advantages of simple structure, compact integral structure, smaller occupied space, simple manufacturing process and convenient operation.

In an alternative embodiment of the invention, the lower end part of the heat pipe group 1 is inserted on the liquid collecting plate 2, and the insertion openings of the heat pipe group 1 and the liquid collecting plate 2 are welded, so that the heat pipe group 1 and the liquid collecting plate 2 form an integral structure. Meanwhile, the heat exchange fins 3 are welded among the heat exchange tubes 101, so that the heat tube set 1, the heat exchange fins 3 and the liquid collecting plate 2 form an integral structure. The catheter 5 is arranged at the perfusion opening 4, the interface of the perfusion opening 4 and the catheter 5 has better sealing performance, and the free end of the catheter 5 far away from the perfusion opening 4 is provided with a sealing installation cap.

In the using process, firstly, the heat pipe set 1, the liquid collecting plate 2 and the heat exchange fins 3 are welded into a whole, and a guide pipe 5 is arranged at a pouring opening 4; then the guide pipe 5 is connected with a vacuumizing filling device to finish the vacuumizing and working medium filling work of the heat pipe set 1; finally, the conduit 5 is disconnected from the vacuum infusion device and a seal mounting cap is mounted at the free end of the conduit 5 remote from the infusion port 4. Through the structure, the packaging quality of the heat pipe set 1 is effectively guaranteed, and the technical difficulty and risk of firstly packaging and then welding in the prior art are reduced. Meanwhile, compared with the heat pipe heat exchanger in the prior art, the heat pipe heat exchanger has the advantage of compact integral structure.

It should be noted here that in the exemplary embodiment of the present invention, the working medium charged in the heat pipe set 1 is, for example, R141b, methanol or acetone.

As shown in fig. 3, in one embodiment of the present invention, each heat exchange tube 101 is internally provided with a plurality of fins 102 spaced apart from each other, wherein the plurality of fins 102 divide the inner cavity of the heat exchange tube 101 into a plurality of microchannels 103 spaced apart from each other, and each microchannel 103 is communicated with the liquid storage chamber of the liquid collector 2.

As shown in fig. 2, in one embodiment of the present invention, each heat exchange fin 3 is bent to form an S-shaped structure, wherein the bent portion of the S-shaped structure of the heat exchange fin 3 is connected between the outer surfaces of two adjacent heat exchange tubes 101.

More specifically, in one embodiment of the present invention, the heat exchanging fin 3 is, for example, an aluminum heat exchanging fin, and the structural form of the heat exchanging fin 3 includes, but is not limited to, a straight fin, a louvered fin, and a corrugated fin. By adopting the aluminum heat exchange fins, the weight of the heat pipe exchanger can be reduced, and the manufacturing cost is reduced.

In one embodiment of the present invention, each heat exchange tube 101 is configured as a flat tube structure. The bent parts of the S-shaped structures of the heat exchange fins 3 are connected between the flat surfaces of the flat tube structures, and the flat tube structures are arranged in a rectangular array form. Wherein, flat tubular construction is aluminium system flat tubular construction. When the heat pipe exchanger is applied to solid heat source heat dissipation, the solid heat source is arranged between the flat pipe structures and is directly contacted with the flat surfaces of the flat pipe structures, so that heat exchange thermal resistance can be reduced, and heat exchange efficiency is improved; meanwhile, the aluminum flat tube structure is adopted, so that the weight of the heat pipe heat exchanger can be reduced, and the manufacturing cost is reduced.

Furthermore, in an embodiment of the present invention, the liquid collecting plate 2 is a rectangular flat plate with a rectangular liquid storing cavity therein, the flat tube structure is arranged in a rectangular array, and the size of the rectangular liquid storing cavity is adapted to the size of the rectangular array formed by the flat tube structure. The quantity of flat tube structure can be confirmed according to actual need by oneself, and the size that the cuboid held the liquid chamber and flat tube structure looks adaptation are correspondingly changed to make heat pipe exchanger's use flexibility strong from this, and the commonality is high.

As shown in fig. 1 and 4, in one embodiment of the invention, heat exchange fins 3 are arranged at least on the condensation section of the heat pipe set 1.

In the actual use process, the heat pipe heat exchanger is firstly connected with vacuumizing filling equipment through a guide pipe 5 to complete the vacuumizing and working medium filling work of the heat pipe set 1; then disconnecting the conduit 5 from the vacuum pumping perfusion equipment, and installing a sealing installation cap at the free end of the conduit 5 far away from the perfusion opening 4; and finally, the heat pipe heat exchanger starts to work. When the heat pipe exchanger works, the evaporation section of the heat pipe set 1 is tightly attached to a heat source, working media filled in the heat pipe set 1 absorb heat and vaporize, steam flows to the condensation section to release heat under the action of pressure difference, the heat is rapidly dissipated through the heat exchange fins 3, the working media steam is condensed into liquid and flows back to the evaporation section under the action of gravity, and the circulation is repeated in this way, so that the heat source is cooled.

In one embodiment of the invention, as shown in fig. 4, the heat pipe heat exchanger is applied to heat dissipation of a square soft pack lithium battery 9. On heat transfer fin 3 laid the condensation segment of heat pipe group 1, square soft packet of lithium cell 9 was closely laminated with the evaporation zone of heat pipe group 1, the working medium heat absorption vaporization of filling in the heat pipe group 1, under the effect of pressure differential, steam flow direction condensation segment emitted the heat, the heat is effused fast through heat transfer fin 3, working medium steam condenses into liquid and flows back to the evaporation zone under the action of gravity, so circulation is reciprocal, cools down soft packet of lithium cell 9 of side shape. It should be noted here that the size, the number and the arrangement form of each heat exchange tube 101 in the heat pipe exchanger can be determined by itself according to the size and the number of the square lithium soft pack batteries 9.

In yet another embodiment of the present invention, the heat exchange fins 3 are arranged on both the condensing section and the evaporating section of the heat pipe set 1, and a partition plate 6 is disposed between the condensing section and the evaporating section.

Specifically, as shown in fig. 7, in one embodiment of the present invention, the heat pipe group 1 is composed of a plurality of heat exchange pipes 101 arranged in a rectangular array form. The heat exchange tubes 101 are connected through heat exchange fins 3 bent into an S shape, the heat exchange fins 3 are uniformly arranged on the upper portion and the lower portion of the heat tube set 1, namely, the heat exchange fins 3 are uniformly arranged on the evaporation section and the condensation section of the heat tube set 1. A partition plate 6 is arranged between the evaporation section and the condensation section in the heat pipe set 1. The lower end of the heat pipe set 1 is inserted into the liquid collecting plate 2, and each micro-channel 103 in the heat pipe set 1 is communicated with a liquid storage cavity of a cuboid inside the liquid collecting plate 2. The liquid collecting plate 2 is provided with a pouring opening 4, and the pouring opening 4 is provided with a guide pipe 5 for the work of vacuumizing and working medium filling of the heat pipe heat exchanger.

In specific implementation, the heat pipe heat exchanger is firstly connected with vacuumizing filling equipment through a guide pipe 5 to complete the vacuumizing and working medium filling work of the heat pipe set 1; then disconnecting the conduit 5 from the vacuum pumping perfusion equipment, and installing a sealing installation cap at the free end of the conduit 5 far away from the perfusion opening 4; and finally, the heat pipe heat exchanger starts to work. When the heat pipe exchanger works, the working medium filled in the heat pipe set 1 absorbs heat and vaporizes, steam flows to the condensation section to release heat under the action of pressure difference, the heat is rapidly dissipated through the heat exchange fins 3, the working medium steam is condensed into liquid and flows back to the evaporation section under the action of gravity, and the circulation is repeated in this way to cool the heat source. The heat pipe heat exchanger is applied to fluid heat exchange, and the heat exchange fins 3 are arranged on the evaporation section and the condensation section of the heat pipe set 1 at the same time, so that the heat exchange efficiency can be improved. It should be noted here that the size, number and arrangement of the heat exchange tubes 101 in the heat pipe exchanger can be determined by themselves according to the heat load of the heat source.

In addition, in an embodiment of the present invention, there is also provided a heat dissipating apparatus including a case 7 and a plurality of heat pipe heat exchangers as described above provided in the case 7, wherein the plurality of heat pipe heat exchangers are arranged in a rectangular array form with each other.

Further, in one embodiment of the present invention, a fan set 8 is mounted on the box 7, and the fan set 8 is disposed on the box 7 corresponding to the condensation section and/or the evaporation section of the heat pipe heat exchanger.

Specifically, as shown in fig. 5 and 6, in one embodiment of the present invention, the heat source device is assembled with a plurality of heat pipe heat exchangers and then installed in the box 7, and a fan set 8 is installed on the box 7 at a position corresponding to the condensation section of the heat pipe heat exchanger. The fan group 8 carries out forced convection heat dissipation on the condensation section of the heat pipe heat exchanger. The heat generated by the heat source device is transferred through the heat pipe group 1 and the heat exchange fins 3 and then blown out by the fan 8 group.

In another embodiment of the present invention, the box body 7 is further provided with an air inlet grille, wherein the air inlet grille comprises a cold fluid air inlet grille 10 arranged as a cold fluid inlet and a hot fluid air inlet grille 11 arranged as a hot fluid inlet.

Further, in one embodiment of the present invention, a cold fluid intake grill 10 is provided on the case 7 corresponding to the condenser section of the heat pipe heat exchanger, and a hot fluid intake grill 11 is provided on the case 7 corresponding to the evaporator section of the heat pipe heat exchanger. Wherein, the cold fluid air inlet grid 10 is a cold fluid inlet, and the hot fluid air inlet grid 11 is a hot fluid inlet.

Specifically, as shown in fig. 8 to 11, in one embodiment of the present invention, a plurality of heat pipe heat exchangers are integrated and mounted in the case 7. A cold fluid air inlet grid 10 is arranged on the box body 7 at a position corresponding to the condensation section of the heat pipe heat exchanger, and a fan set 8 is also arranged on the box body 7 at a position corresponding to the condensation section of the heat pipe heat exchanger; a hot fluid air inlet grille 11 is arranged on the box body 7 corresponding to the position of the evaporation section of the heat pipe exchanger, and a fan set 8 is also arranged on the box body 7 corresponding to the position of the evaporation section of the heat pipe exchanger. In specific implementation, the cold fluid air inlet grille 10 is a cold fluid inlet, and the hot fluid air inlet grille 11 is a hot fluid inlet. The fan set 8 drives the cold fluid and the hot fluid to flow respectively, and then heat exchange is realized through the heat pipe exchanger. Wherein, by adjusting the fluid form flowing into the cold fluid inlet and the hot fluid inlet to be liquid or gas, the gas-gas heat exchange, the gas-liquid heat exchange or the liquid-liquid heat exchange can be realized.

It should be noted here that the number and arrangement form of the heat pipe heat exchangers installed in the heat dissipation device are not limited in any way, and the number and arrangement form of the heat pipe heat exchangers installed in the heat dissipation device can be flexibly adjusted according to the number of heat sources, the size of the heat sources, the arrangement form of the heat sources, and the like. It is further noted that while the present invention has been described above in terms of various embodiments, it should be appreciated that the various embodiments described above may be combined with one another in nature to create other embodiments not illustrated or described in the drawings and text. In other words, the above description is only an exemplary embodiment of the present invention, and does not set any limit to the scope of the present invention.

According to the above-mentioned embodiments, the heat dissipation device comprises the heat pipe heat exchanger as described above, and therefore, the advantages of the heat pipe heat exchanger as described above are also provided. Meanwhile, the heat dissipation device is additionally provided with the fan set 8, so that the heat dissipation effect can be improved. In addition, the heat dissipation device can realize gas-gas heat exchange, gas-liquid heat exchange or liquid-liquid heat exchange, and has higher adaptability and flexibility.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A heat pipe heat exchanger, comprising: the heat pipe set comprises a plurality of heat exchange pipes, the upper part of the heat pipe set is a condensation section, the lower part of the heat pipe set is an evaporation section, the heat exchange pipes are connected through the heat exchange fins, the lower end part of the heat pipe set is connected with the liquid collecting plate and communicated with a liquid storage cavity of the liquid collecting plate, and the liquid collecting plate is provided with a filling opening.

2. A heat pipe exchanger as claimed in claim 1, wherein each of the heat exchange tubes is internally provided with a plurality of fins spaced apart from each other, wherein the plurality of fins divide an inner cavity of the heat exchange tube into a plurality of microchannels spaced apart from each other, each of the microchannels communicating with the liquid storage chamber of the liquid collector.

3. A heat pipe exchanger as claimed in claim 1, wherein each of the heat exchange fins is bent to form an S-shaped structure, wherein the bent portions of the S-shaped structure of the heat exchange fin are connected between the outer surfaces of two adjacent heat exchange tubes.

4. A heat pipe exchanger according to claim 3, wherein each of the heat exchange tubes is constructed as a flat tube structure, wherein the bends of the S-shaped structures of the heat exchange fins are connected between the flat faces of the flat tube structures, and wherein the arrangement of each of the flat tube structures is in the form of a rectangular array.

5. A heat pipe heat exchanger as claimed in any one of claims 1 to 4, characterized in that the heat exchange fins are arranged at least on the condensation section of the heat pipe set.

6. A heat pipe heat exchanger as claimed in claim 5, wherein the heat exchange fins are arranged on both the condensing section and the evaporating section of the heat pipe set, and a partition is provided between the condensing section and the evaporating section.

7. A heat dissipating apparatus comprising a case and a plurality of heat pipe exchangers according to any one of claims 1 to 6 provided in the case, wherein the plurality of heat pipe exchangers are arranged in a rectangular array with each other.

8. The heat dissipating device of claim 7, wherein a fan set is mounted on the case, the fan set being disposed on the case corresponding to the condensing section and/or the evaporating section of the heat pipe heat exchanger.

9. The heat dissipation device of claim 7, wherein the box body is further provided with an air inlet grille, wherein the air inlet grille comprises a cold fluid air inlet grille arranged as a cold fluid inlet and a hot fluid air inlet grille arranged as a hot fluid inlet.

10. The heat sink of claim 9, wherein the cold fluid air grille is positioned on the housing corresponding to a condenser section of the heat pipe heat exchanger and the hot fluid air grille is positioned on the housing corresponding to an evaporator section of the heat pipe heat exchanger.