Heat pipe and method of making same
By spraying thermally conductive material onto a rigid thermally conductive substrate and pressing it together to form a heat pipe, the problem of short service life of existing heat pipes is solved, achieving a more durable, thinner, and faster heat conduction effect, which is suitable for thin and light electronic devices.
Patent Information
- Application Number
- CN202111660386.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-12-30
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2041-12-30
AI Technical Summary
Existing heat pipes have a short lifespan, are not durable, and are not suitable for lighter and thinner electronic devices.
A substrate made of rigid thermally conductive material is used, and a thermally conductive material is sprayed onto the substrate to form a sprayed layer. A heat pipe is formed by pressing. Grooves are engraved on the sprayed layer to form chambers and capillary structures. Combined with a liquid wick, rapid heat transfer and durability are achieved.
The resulting heat pipes are highly rigid, have a long service life, are suitable for lighter and thinner electronic devices, are low in cost, and have rapid heat transfer and conduction capabilities.
Smart Images
Figure CN114526625B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of heat conduction devices, and particularly relates to a heat pipe and a preparation method thereof. BACKGROUND
[0002] The existing heat pipe is mainly composed of a closed metal pipe body, a capillary structure in the metal pipe body and a heat transfer fluid filled in the metal pipe body, and maintains a proper vacuum degree in the metal pipe body to reduce the temperature difference of the heat pipe starting. The evaporation end of the heat pipe is arranged at a heat source, so that the heat generated by the heat source evaporates and absorbs heat to vaporize the fluid in the heat pipe. The generated steam pressure difference drives the flow to the condensing part of the heat pipe. The steam releases latent heat, i.e. condenses to restore to liquid phase, and then returns to the evaporation part of the heat pipe through the capillary core structure, i.e. quickly conducts heat away through the above structure. The existing heat pipe has the problems of short service life and poor durability. SUMMARY
[0003] The present application belongs to the technical field of heat conduction devices, and particularly relates to a heat pipe and a preparation method thereof.
[0004] To solve the above technical problems, the present application adopts the following technical scheme:
[0005] The heat pipe comprises:
[0006] The first combination part comprises a first substrate, the lower surface of the first substrate is provided with a first spraying layer, the first spraying layer is formed by metal spraying on the lower surface of the first substrate, the first substrate and the first spraying layer are pressed to form the first combination part, the bottom surface of the first spraying layer is sequentially provided with a first groove, a second groove and a third groove from front to back, the left end of the first groove, the left end of the second groove and the left end of the third groove are connected, the right end of the first groove, the right end of the second groove and the right end of the third groove are connected, the second combination part comprises a second substrate, the upper surface of the second substrate is provided with a second spraying layer, the second spraying layer is formed by metal spraying on the upper surface of the second substrate, the second substrate and the second spraying layer are pressed to form the second combination part, the top surface of the second spraying layer is sequentially provided with a fourth groove, a fifth groove and a sixth groove from front to back, the left end of the fourth groove, the left end of the fifth groove and the left end of the sixth groove are connected, the right end of the fourth groove, the right end of the fifth groove and the right end of the sixth groove are connected, the first groove, the second groove and the third groove are sequentially buckled on the fourth groove, the fifth groove and the sixth groove, the first combination part is buckled on the second combination part, and the edges of the first combination part and the second combination part in contact are connected, the first groove and the fourth groove form a first cavity, the second groove and the fifth groove form a second cavity, and the third groove and the sixth groove form a third cavity, the left end of the first cavity, the left end of the second cavity and the left end of the third cavity are connected, the right end of the first cavity, the right end of the second cavity and the right end of the third cavity are connected, and the first cavity and the third cavity are respectively provided with a first liquid absorption core and a second liquid absorption core, and the first liquid absorption core and the second liquid absorption core are filled with fluid.
[0007] Preferably, the first substrate and the second substrate are made of rigid heat-conducting materials.
[0008] Preferably, the first spraying layer and the second spraying layer are composed of a plurality of layers of metal particles or powders, and the metal particles or powders are made of heat-conducting materials.
[0009] Preferably, the diameter of the metal particles is 2-100 μm.
[0010] The application also discloses a preparation method of the heat pipe.
[0011] (1) taking a first substrate and a second substrate made of rigid heat-conducting materials, then performing shielding treatment on the upper surface, the left side, the front side, the right side and the back side of the first substrate, and performing shielding treatment on the lower surface, the left side, the front side, the right side and the back side of the second substrate, so as to expose the areas of the first substrate and the second substrate that need to be metal sprayed;
[0012] (2) surface roughening treatment is performed on the lower surface of the first substrate and the upper surface of the second substrate in step (1) ;
[0013] (3) metal spraying is performed on the lower surface of the first substrate and the upper surface of the second substrate subjected to the surface roughening treatment in step (2) to form a first sprayed layer and a second sprayed layer, respectively;
[0014] (4) the first substrate and the first sprayed layer subjected to the metal spraying in step (3) are subjected to compression treatment, and the second substrate and the second sprayed layer subjected to the metal spraying in step (3) are subjected to compression treatment;
[0015] (5) grooves are formed on the bottom surface of the first sprayed layer and the top surface of the second sprayed layer, respectively, and then a first groove, a second groove and a third groove are formed on the bottom surface of the first sprayed layer, and a fourth groove, a fifth groove and a sixth groove are formed on the top surface of the second sprayed layer;
[0016] (6) the first sprayed layer on the first substrate subjected to the groove formation in step (5) is aligned with the second sprayed layer on the second substrate, the first sprayed layer on the first substrate is buckled on the second sprayed layer on the second substrate, the first groove and the fourth groove enclose a first chamber, the second groove and the fifth groove enclose a second chamber, and the third groove and the sixth groove enclose a third chamber, the left end of the first chamber, the left end of the second chamber and the left end of the third chamber are kept in communication, the right end of the first chamber, the right end of the second chamber and the right end of the third chamber are kept in communication, then a first wick and a second wick are arranged in the first chamber and the third chamber, respectively, and then a fluid is filled in the first wick and the second wick, and the second chamber is vacuumized;
[0017] (7) the edges of the first substrate and the second substrate buckled together in step (6) are compressed to form a heat pipe.
[0018] Preferably, the thickness of the heat pipe formed after compression in step (7) ranges from 0.1 mm to 0.5 mm.
[0019] By adopting the technical scheme, the present application has the following beneficial effects:
[0020] (1) The first substrate and the second substrate of the present application are made of rigid heat-conducting material, then the first sprayed layer and the second sprayed layer are obtained by metal spraying on the first substrate and the second substrate made of rigid heat-conducting material, and finally a heat pipe is formed, the heat pipe of the present application is made of rigid heat-conducting material, has high hardness, is solid and durable, has a longer service life, and has a lower cost compared with the heat pipe made of pure copper and other materials in the prior art, and the first sprayed layer and the second sprayed layer are also made of heat-conducting material, which can rapidly conduct heat;
[0021] (2) the present application adopts metal spraying on the first substrate and the second substrate and pressing the edge to finally make the heat pipe, and the thickness of the made heat pipe is 0.1mm-0.5mm, the thickness of the heat pipe in the prior art is mostly 2mm to 200mm, which is not suitable for future application in lighter and thinner electronic devices, the thickness of the made heat pipe of the present application is only 0.1mm-0.5mm, the thickness is small, and it is suitable for lighter and thinner electronic devices, and the application scenarios are wide;
[0022] In summary, the present application has the advantages of rapid heat conduction, durability, long service life, thin thickness and the like. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 is the structure schematic view of the edge of the first substrate and the second substrate in the present application when not being pressed;
[0024] Figure 2 is the structure schematic view of the edge of the first substrate and the second substrate when being pressed in the present application; Figure 1
[0025] Figure 3 is the sectional view in the A-A direction in the present application; Figure 2
[0026] Figure 4 is the bottom view of the first spraying layer in the present application; Figure 1
[0027] Figure 5 is the top view of the second spraying layer in the present application. Figure 1 DETAILED DESCRIPTION The components of the embodiments of the present application described and shown in the accompanying drawings hereof can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application, but merely represents selected embodiments of the application.
[0028] The components of the embodiments of the present application described and shown in the accompanying drawings hereof can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the application, but merely represents selected embodiments of the application.
[0029] All other embodiments obtained by those of ordinary skill in the art without creative work based on the embodiments in the present application shall fall within the scope of protection of the present application.
[0030]
[0031] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description and cannot be understood as indicating or implying relative importance.
[0032] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0033] As Figures 1-5 shown, in the first embodiment of the present application, the heat pipe of the present application comprises;
[0034] The first combination part comprises a first substrate 1, the lower surface of the first substrate 1 is provided with a first spraying layer 2, the first spraying layer 2 is formed by metal spraying on the lower surface of the first substrate 1, the first substrate 1 and the first spraying layer 2 are press-bonded to form the first combination part, the bottom surface of the first spraying layer 2 is sequentially provided with a first groove 3, a second groove 4 and a third groove 5 from front to back, the left end of the first groove 3, the left end of the second groove 4 and the left end of the third groove 5 are all connected, the right end of the first groove 3, the right end of the second groove 4 and the right end of the third groove 5 are all connected, the second combination part comprises a second substrate 6, the upper surface of the second substrate 6 is provided with a second spraying layer 7, the second spraying layer 7 is formed by metal spraying on the upper surface of the second substrate 6, the second substrate 6 and the second spraying layer 7 are press-bonded to form the second combination part, the top surface of the second spraying layer 7 is sequentially provided with a fourth groove 8, a fifth groove 9 and a sixth groove 10 from front to back, the left end of the fourth groove 8, the left end of the fifth groove 9 and the left end of the sixth groove 10 are all connected, the right end of the fourth groove 8, the right end of the fifth groove 9 and the right end of the sixth groove 10 are all connected, the first groove 3, the second groove 4 and the third groove 5 are sequentially buckled on the fourth groove 8, the fifth groove 9 and the sixth groove 10, the first combination part is buckled on the second combination part and the edges of the first combination part and the second combination part in contact are connected, the first groove 3 and the fourth groove 8 enclose a first cavity 11, the second groove 4 and the fifth groove 9 enclose a second cavity 12, the third groove 5 and the sixth groove 10 enclose a third cavity 13, the left end of the first cavity 11, the left end of the second cavity 12 and the left end of the third cavity 13 are all connected, the right end of the first cavity 11, the right end of the second cavity 12 and the right end of the third cavity 13 are all connected, first liquid absorption cores and second liquid absorption cores are respectively arranged in the first cavity 11 and the third cavity 13, the first liquid absorption cores and the second liquid absorption cores are filled with fluid, the second cavity 12 is operated by vacuumizing to maintain a certain degree of vacuum, the first cavity 11, the second cavity 12 and the third cavity 13 are divided in the middle (divided by a partition plate 14, that is, the part of the first spraying layer 2 and the second spraying layer 7 in the middle), the left and right ends are respectively communicated, the first groove 3, the second groove 4, the third groove 5, the fourth groove 8, the fifth groove 9 and the sixth groove 10 are all formed by laser engraving, etching or other ways, the first groove 3, the second groove 4, the third groove 5, the fourth groove 8, the fifth groove 9 and the sixth groove 10 formed by any way should be covered in the protection scope of the present application, the connection of the edges of the first combination part and the second combination part in contact can be press-bonding connection, welding or other ways, the connection of the first combination part and the second combination part by any way should be covered in the protection scope of the present application.The left end of the first chamber 11, the left end of the second chamber 12 and the left end of the third chamber 13 are communicated to form an annular flow channel, the right end of the first chamber 11, the right end of the second chamber 12 and the right end of the third chamber 13 are communicated to form an annular flow channel, the first liquid absorption core and the second liquid absorption core are in a capillary structure, and the first liquid absorption core and the second liquid absorption core can be a single component unit, which is installed in the first chamber 11 and the third chamber 13, or the first liquid absorption core and the second liquid absorption core are directly formed as a part of the first groove 3 and the second groove 4 or the fifth groove 9 and the sixth groove 10 in a laser engraving, etching or other forming process of the first groove 3, the second groove 4, the fifth groove 9 and the sixth groove 10, that is, the first liquid absorption core and the second liquid absorption core in the first groove 3 and the second groove 4 or the fifth groove 9 and the sixth groove 10 are in a capillary porous structure instead of a through groove, and a plurality of microporous microchips and other structures can be further arranged in the first liquid absorption core and the second liquid absorption core.
[0035] The first substrate 1 and the second substrate 6 are made of rigid heat-conducting materials, such as stainless steel or other metal alloy materials.
[0036] The first spray layer 2 and the second spray layer 7 are composed of a plurality of layers of metal particles or powders, and the metal particles or powders are made of heat-conducting materials, and the metal particles or powders are copper particles or powders.
[0037] The diameter of the metal particles is 2-100 mu m.
[0038] The application further discloses a preparation method of the heat pipe, which comprises the following steps:
[0039] (1) taking rigid heat-conducting materials to make the first substrate 1 and the second substrate 6, then performing shielding treatment on the upper surface, the left side, the front side, the right side and the rear side of the first substrate 1 respectively, and performing shielding treatment on the lower surface, the left side, the front side, the right side and the rear side of the second substrate 6, so as to expose the areas of the first substrate 1 and the second substrate 6 that need to be sprayed with metal, that is, shielding treatment is performed on the areas that do not need to be sprayed with metal, and the areas that need to be sprayed with metal are exposed, the shielding treatment can be performed by fixing the first substrate 1 and the second substrate 6 on a shielding jig, covering the areas of the first substrate 1 and the second substrate 6 that do not need to be sprayed with metal, and exposing the areas that need to be sprayed with metal, or the shielding treatment can be performed by wrapping the first substrate 1 and the second substrate 6 with a thin layer of material, and removing the thin material corresponding to the areas that need to be sprayed with metal by using a laser engraving machine or other equipment, so as to expose the areas that need to be sprayed with metal, and the shielding treatment method is not limited in the application;
[0040] (2) performing surface roughening treatment on the lower surface of the first substrate 1 and the upper surface of the second substrate 6 in step (1);
[0041] (3) The lower surface of the first substrate 1 and the upper surface of the second substrate 6 which have been subjected to surface roughening treatment in step (2) are subjected to metal spraying to form the first sprayed layer 2 and the second sprayed layer 7, respectively, the metal spraying including thermal spraying and cold spraying, wherein the thermal spraying refers to a technique of heating a powdered or filamentous metal or non-metal material to a molten or semi-molten state by using a certain heat source (such as an electric arc, plasma spraying or combustion flame, etc.), and then spraying the material to a treated substrate surface at a certain speed by means of high-speed gas to form a surface coating with various functions; the cold spraying refers to a process in which metal particles are not melted during the whole spraying process, and the metal particles are accelerated by compressed air and are firmly attached to the substrate surface by being flattened on the substrate surface, in the present embodiment, the material of the coating layer is selected to be a heat-conducting material, and the metal spraying forms the first sprayed layer 2 and the second sprayed layer 7, in addition, the material of the coating layer can also include different mixed materials, so that the coating layer has one or more properties such as heat conduction, wear resistance, corrosion resistance, oxidation resistance, high strength, high density, high melting point, high hardness, good gloss, good ductility, etc., to meet different requirements;
[0042] (4) The first substrate 1 and the first sprayed layer 2 subjected to metal spraying in step (3) are subjected to pressing treatment, and the second substrate 6 and the second sprayed layer 7 subjected to metal spraying in step (3) are subjected to pressing treatment;
[0043] (5) Grooves are formed on the bottom surface of the first sprayed layer 2 and the top surface of the second sprayed layer 7, respectively, and then the first groove 3, the second groove 4 and the third groove 5 are formed on the bottom surface of the first sprayed layer 2, and the fourth groove 8, the fifth groove 9 and the sixth groove 10 are formed on the top surface of the second sprayed layer 7, the first groove 3, the second groove 4, the third groove 5, the fourth groove 8, the fifth groove 9 and the sixth groove 10 of the present application are not limited to a specific shape, and can be made into various patterns according to requirements and used in cooperation with each other to form a reflux, the first liquid absorption core is arranged in the first chamber 11, the second liquid absorption core is arranged in the third chamber 13, the second chamber 12 can maintain a proper vacuum degree and the gas flows in the second chamber 12, and a certain channel can also be formed inside the first sprayed layer 2 and the second sprayed layer 7 to meet the requirements, in use, one end of the present application is the evaporation end and the other end is the condensation end, in normal use, the fluid in the first liquid absorption core and the second liquid absorption core of the evaporation end absorbs heat to become gas and enters the second chamber 12 and reaches the condensation end along the second chamber 12, and the gas becomes liquid again and enters the first liquid absorption core and the second liquid absorption core to reflux to the evaporation end;
[0044] (6) the first base plate 1 of step (5) is aligned with the second spray layer 7 on the second base plate 6, the spray layer of the first base plate 1 is buckled on the second spray layer 7 on the second base plate 6, the first groove 3 and the fourth groove 8 form the first chamber 11, the second groove 4 and the fifth groove 9 form the second chamber 12, the third groove 5 and the sixth groove 10 form the third chamber 13, the left end of the first chamber 11, the left end of the second chamber 12 and the left end of the third chamber 13 are kept in communication, the right end of the first chamber 11, the right end of the second chamber 12 and the right end of the third chamber 13 are kept in communication, then the first liquid absorbing core and the second liquid absorbing core are arranged in the first chamber 11 and the third chamber 13 respectively, then the fluid is filled in the first liquid absorbing core and the second liquid absorbing core, and the second chamber 12 is vacuumized;
[0045] (7) the edges of the first base plate 1 and the second base plate 6 buckled together in step (6) are pressed to form a heat pipe, the thickness of the heat pipe formed after pressing ranges from 0.1mm to 0.5mm, the heat pipe in the prior art is generally made of copper material, the heat pipe made of copper is soft in texture, not strong and durable, short in service life and high in cost, the heat pipe of the present application is made by metal spraying on rigid heat-conducting materials such as stainless steel, which has excellent heat conductivity and certain rigidity, is strong and durable, long in service life, thin in thickness and low in cost.
[0046] In another embodiment of the present application, a plurality of grooves can be arranged to form a plurality of cavities and a plurality of liquid absorbing core structures can be arranged to meet the use requirements, for example, four liquid absorbing cores are needed compared with the first embodiment, the heat pipe of the present application comprises;
[0047] The first combination part comprises a first substrate 1, the lower surface of the first substrate 1 is provided with a first spraying layer 2, the first spraying layer 2 is formed by metal spraying on the lower surface of the first substrate 1, the first substrate 1 and the first spraying layer 2 are pressed to form the first combination part, the bottom surface of the first spraying layer 2 is sequentially provided with a seventh groove, an eighth groove, a ninth groove, a tenth groove, an eleventh groove and a twelfth groove from front to back, the left end of the seventh groove, the left end of the eighth groove and the left end of the ninth groove are connected, the right end of the seventh groove, the right end of the eighth groove and the right end of the ninth groove are connected, the left end of the tenth groove, the left end of the eleventh groove and the left end of the twelfth groove are connected, and the right end of the tenth groove, the right end of the eleventh groove and the right end of the twelfth groove are connected; the second combination part comprises a second substrate 6, the upper surface of the second substrate 6 is provided with a second spraying layer 7, the second spraying layer 7 is formed by metal spraying on the upper surface of the second substrate 6, the second substrate 6 and the second spraying layer 7 are pressed to form the second combination part, the top surface of the second spraying layer 7 is sequentially provided with a thirteenth groove, a fourteenth groove, a fifteenth groove, a sixteenth groove, a seventeenth groove and an eighteenth groove from front to back, the left end of the thirteenth groove, the left end of the fourteenth groove and the left end of the fifteenth groove are connected, the right end of the thirteenth groove, the right end of the fourteenth groove and the right end of the fifteenth groove are connected, the left end of the sixteenth groove, the left end of the seventeenth groove and the left end of the eighteenth groove are connected, and the right end of the sixteenth groove, the right end of the seventeenth groove and the right end of the eighteenth groove are connected, the first combination part is buckled on the second combination part, and the edges of the first combination part and the second combination part are connected, the seventh groove and the thirteenth groove form a fourth cavity, the eighth groove and the fourteenth groove form a fifth cavity, the ninth groove and the fifteenth groove form a sixth cavity, the left and right ends of the fourth cavity, the fifth cavity and the sixth cavity are respectively two barrels, the tenth groove and the sixteenth groove form a seventh cavity, the eleventh groove and the seventeenth groove form an eighth cavity, the twelfth groove and the eighteenth groove form a ninth cavity, the left and right ends of the seventh cavity, the eighth cavity and the ninth cavity are connected, the fourth cavity, the sixth cavity, the seventh cavity and the ninth cavity are respectively provided with a third liquid absorption core, a fourth liquid absorption core, a fifth liquid absorption core and a sixth liquid absorption core, the third liquid absorption core, the fourth liquid absorption core, the fifth liquid absorption core and the sixth liquid absorption core are filled with fluid, the fifth cavity and the eighth cavity are formed by vacuumizing, and a certain degree of vacuum is maintained, the seventh groove, the eighth groove, the ninth groove, the tenth groove, the eleventh groove, the twelfth groove, the thirteenth groove, the fourteenth groove, the fifteenth groove, the sixteenth groove, the seventeenth groove and the eighteenth groove are formed by laser engraving, etching or other ways, and any way of forming the seventh groove, the eighth groove, the ninth groove, the fourth groove 8, the fifth groove 9 and the sixth groove 10 should be covered in the protection scope of the present application.The connection of the edge of the first combination part and the second combination part in contact can be connected by pressing, welding or other ways, and any way of connecting the first combination part and the second combination part should be covered in the protection scope of the present application. The left end of the fourth chamber, the left end of the fifth chamber, the left end of the sixth chamber, the left end of the seventh chamber, the left end of the eighth chamber and the left end of the ninth chamber are communicated to form an annular flow channel. The right end of the fourth chamber, the right end of the fifth chamber, the right end of the sixth chamber, the right end of the seventh chamber, the right end of the eighth chamber and the right end of the ninth chamber are communicated to form an annular flow channel. The third wick, the fourth wick, the fifth wick and the sixth wick are capillary structures. A plurality of microporous microchips and other structures can be arranged in the third wick, the fourth wick, the fifth wick and the sixth wick. By this arrangement, a plurality of capillary structures are formed inside the present application, and the efficiency of heat dissipation and heat conduction is enhanced. The seventh groove, the eighth groove, the ninth groove, the tenth groove, the eleventh groove, the twelfth groove, the thirteenth groove, the fourteenth groove, the fifteenth groove, the sixteenth groove, the seventeenth groove and the eighteenth groove are not limited to specific shapes, and can be made into various patterns according to requirements and used in cooperation to form a backflow. The third wick, the fourth wick, the fifth wick and the sixth wick are arranged in the fourth chamber, the sixth chamber, the seventh chamber and the ninth chamber, respectively. The fifth chamber and the eighth chamber can maintain a proper vacuum degree, and the gas flows in the fifth chamber and the eighth chamber. The first spraying layer 2 and the second spraying layer 7 can be shaped to form a certain channel to meet the requirements. In use, one end of the present application is the evaporation end and the other end is the condensation end. In normal use, the fluid in the third wick, the fourth wick, the fifth wick and the sixth wick of the evaporation end absorbs heat to become gas and enters the fifth chamber or the eighth chamber and reaches the condensation end along the fifth chamber or the eighth chamber. The gas becomes liquid again and enters the third wick, the fourth wick, the fifth wick and the sixth wick, and then backflows to the evaporation end.
[0048] The present embodiment does not limit the shape, material, structure and the like of the present application in any form. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application are within the protection scope of the technical solution of the present application.
Claims
1. A heat pipe, characterized by The utility model relates to a kind of liquid-absorbing core, including: First combination part and second combination part, the first combination part includes first substrate, first spray coating is equipped on the lower surface of first substrate, first spray coating is formed on the lower surface of first substrate by metal spraying, first substrate and first spray coating are pressed and formed into the first combination part, the bottom surface of first spray coating is sequentially provided with first groove, second groove and third groove from front to back, the left end of first groove, the left end of second groove and the left end of third groove are all connected, the right end of first groove, the right end of second groove and the right end of third groove are all connected, the second combination part includes second substrate, second spray coating is equipped on the upper surface of second substrate, second spray coating is formed on the upper surface of second substrate by metal spraying, second substrate and second spray coating are pressed and formed into the second combination part, the top surface of second spray coating is sequentially provided with fourth groove, fifth groove and sixth groove from front to back, the left end of fourth groove, the left end of fifth groove and the left end of sixth groove are all connected, the right end of fourth groove, the right end of fifth groove and the right end of sixth groove are all connected, first groove, second groove and third groove are sequentially buckled on fourth groove, fifth groove and sixth groove, the first combination part is buckled on the second combination part, and the edge of the first combination part and the second combination part is connected, first groove and fourth groove enclose first chamber, second groove and fifth groove enclose second chamber, third groove and sixth groove enclose third chamber, the left end of first chamber, the left end of second chamber and the left end of third chamber are all connected, the right end of first chamber, the right end of second chamber and the right end of third chamber are all connected, first liquid-absorbing core and second liquid-absorbing core are respectively arranged in first chamber and third chamber, and the first liquid-absorbing core and the second liquid-absorbing core are filled with fluid.
2. The heat pipe according to claim 1, characterized in that: The first substrate and the second substrate are made of rigid heat-conducting material.
3. The heat pipe of claim 2, wherein: The first spray coating and the second spray coating are each composed of several layers of metal particles or powder, and the metal particles or powder are each made of heat-conducting material.
4. The heat pipe according to claim 3, wherein: The diameter of the metal particles is 2-100 μm.
5. The method of producing a heat pipe according to claim 4, wherein The utility model includes the following steps: (1) taking first substrate and second substrate made of rigid heat-conducting material, then respectively shielding the upper surface, left side, front side, right side and back side of the first substrate, and shielding the lower surface, left side, front side, right side and back side of the second substrate to expose the areas of the first substrate and the second substrate that need to be sprayed with metal; (2) surface roughening the lower surface of the first substrate and the upper surface of the second substrate in step (1); (3) spraying metal on the surface roughened lower surface of the first substrate and the surface roughened upper surface of the second substrate in step (2) to form first spray coating and second spray coating respectively; (4) pressing the first substrate and the first spray coating on which metal spraying is completed in step (3), and pressing the second substrate and the second spray coating on which metal spraying is completed in step (3). (5) grooves are made on the bottom surface of the first spray layer and the top surface of the second spray layer respectively, then the first groove, the second groove and the third groove are formed on the bottom surface of the first spray layer, and the fourth groove, the fifth groove and the sixth groove are formed on the top surface of the second spray layer; (6) the first spray layer on the first substrate on which the grooves are made in step (5) is aligned with the second spray layer on the second substrate, the spray layer on the first substrate is buckled on the spray layer on the second substrate, the first groove and the fourth groove enclose the first chamber, the second groove and the fifth groove enclose the second chamber, the third groove and the sixth groove enclose the third chamber, the left end of the first chamber, the left end of the second chamber and the left end of the third chamber are kept in communication, the right end of the first chamber, the right end of the second chamber and the right end of the third chamber are kept in communication, then the first wick and the second wick are arranged in the first chamber and the third chamber respectively, then the fluid is filled in the first wick and the second wick, and the second chamber is vacuumized; (7) the edges of the first substrate and the second substrate buckled together in step (6) are pressed to make the heat pipe.
6. The method of producing a heat pipe according to claim 5, wherein: The thickness of the heat pipe made by pressing in step (7) is in the range of 0.1mm-0.5mm.
Citation Information
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