Hierarchical nested high-thermal-conductivity heat pipe
By using a hierarchical nested high thermal conductivity heat pipe structure, the liquid working fluid is driven to evaporate and condense in the heat pipe by capillary force, which solves the problem of insufficient heat dissipation efficiency of high-power heat-generating devices inside the aircraft and realizes efficient heat transfer.
Patent Information
- Application Number
- CN202423215971.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing heat pipe structures are inefficient at dissipating heat from high-power heat-generating devices inside aircraft, and cannot effectively and quickly transfer heat.
The heat pipe adopts a layered nested high thermal conductivity structure, including a pipe shell, a thermally conductive metal core, inner and outer capillary structure layers, and a liquid working fluid. The liquid working fluid is evaporated, flows, and solidifies through capillary force. The liquid working fluid evaporates and absorbs heat in the heat pipe and then condenses, achieving efficient heat transfer.
It enables rapid heat transfer and improves the heat dissipation efficiency of electronic equipment inside the aircraft, meeting the heat dissipation requirements of high reliability and compactness.
Smart Images
Figure CN223610664U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to aircraft heat dissipation technical field especially relates to a level nested high thermal conductivity heat pipe. BACKGROUND
[0002] The microwave and heating electronic device inside the aircraft has large heating power, and the long working time leads to obvious heating effect; in order to ensure the reliability of electronic products, the temperature of the heating electronic device needs to be controlled below a certain temperature, therefore, for the heat generated by high power and long time work of electronic equipment, it is urgent to develop a high reliability, high compactness, high heat dissipation efficiency heat control system to meet the application and development of aircraft control system.
[0003] The aircraft can quickly take away heat through convection heat exchange during flight, and as far as possible, the heat transfer efficiency of electronic equipment to the skin is improved.But the heat exchange efficiency of the existing heat pipe structure is still slightly insufficient when dealing with the heat dissipation of high-power heating devices inside the aircraft.
[0004] Therefore, it is necessary to provide a heat pipe structure suitable for the heat dissipation of internal devices of the aircraft to realize the rapid transfer and transfer of heat. UTILITY MODEL CONTENT
[0005] In view of the above analysis, the utility model aims at providing a level nested high thermal conductivity heat pipe to solve the problem of insufficient heat dissipation and heat conduction efficiency of the existing internal devices of the aircraft.
[0006] The purpose of the utility model is mainly realized through the following technical schemes:
[0007] A level nested high thermal conductivity heat pipe, comprising: a pipe body shell and a heat conduction metal core filled in the pipe body shell;
[0008] The inside of the pipe body shell is filled with liquid working medium;
[0009] The heat conduction metal core comprises: a heat conduction pipe and a curved heat conduction wire; the curved heat conduction wire is arranged in an equidistant array along the circumferential direction of the heat conduction pipe;
[0010] The inner wall surface of the pipe body shell is made of an inner capillary structure layer by sintering metal powder;
[0011] The outer surfaces of the heat conduction pipe and the curved heat conduction wire are made of an outer capillary structure layer by sintering metal powder.
[0012] Further, the heat conduction pipe and the curved heat conduction wire of the heat conduction metal core adopt a split structure
[0013] Further, the heat conduction pipe and the curved heat conduction wire are fixed as a whole by bonding or welding. Further, the heat conduction pipe and the curved heat conduction wire are fixed as a whole by bonding or welding.
[0014] Further, the curved heat transfer guide wire is a serpentine curve.
[0015] Further, the curved heat transfer guide wire is composed of a plurality of S-shaped curve segments.
[0016] Further, the curved heat transfer guide wire extends along the axial direction of the heat pipe.
[0017] Further, the inside of the pipe body shell is provided with a strip-shaped guide wire limiting block.
[0018] Further, the end surface of the guide wire limiting block is provided with an arc-shaped groove for clamping the curved heat transfer guide wire.
[0019] Further, the pipe body shell and the heat-conducting metal core are made of copper or copper-aluminum alloy.
[0020] Further, the pipe body shell is filled with a mixed liquid of water and alcohol.
[0021] The technical scheme of the utility model can at least realize one of the following effects:
[0022] 1. The hierarchical nested high-thermal-conductivity heat pipe of the utility model, the inner wall surface of the pipe body shell is processed with a capillary structure, the capillary force of the capillary structure is used to realize the flow of the liquid working medium in the heat pipe, realize the evaporation and heat absorption of the liquid working medium at the high-temperature end of the heat pipe, and then the gaseous working medium flows to the low-temperature end of the heat pipe to condense, and the condensed liquid working medium can return to the high-temperature end to absorb heat again under the action of the capillary force of the capillary structure of the inner wall surface of the heat pipe.
[0023] 2. The hierarchical nested high-thermal-conductivity heat pipe of the utility model, the heat pipe with the built-in heat-conducting metal core and the curved heat transfer guide wire, the metal structure body of the heat pipe is quickly heated, and then the liquid working medium inside the heat pipe can be heated, the heat absorption phase change of the liquid working medium is promoted, the heat transfer and heat conduction efficiency of the heat pipe is improved, and the efficient circulation and export of heat in the heat sink / heat generating equipment are realized.
[0024] In the utility model, the above technical schemes can be combined with each other to realize more preferred combination schemes. Other features and advantages of the utility model will be described in the subsequent specification, and some advantages can become apparent from the specification or be understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the content specifically pointed out in the specification and the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0025] The drawings are only used for the purpose of showing specific embodiments and are not considered as limiting the utility model, and the same reference signs represent the same parts throughout the drawings.
[0026] Figure 1 A structure schematic view of the hierarchical nested high-thermal-conductivity heat pipe of the utility model;
[0027] Figure 2 A top view of the heat pipe in the utility model; Figure 1
[0028] Figure 3 A schematic view of the heat-conducting metal core filled in the heat pipe;
[0029] Figure 4 A sectional view of the heat-conducting metal core.
[0030] Reference signs:
[0031] 1-pipe body shell; 2-heat-conducting metal core; 3-heat-conducting pipe; 4-curved heat-conducting wire; 5-wire limiting block. DETAILED DESCRIPTION
[0032] The preferred embodiments of the utility model will be described in detail below in conjunction with the drawings, wherein the drawings form a part of the utility model and are used together with the embodiments of the utility model to explain the principles of the utility model, and are not used to limit the scope of the utility model.
[0033] Embodiment 1
[0034] One specific embodiment of the utility model discloses a hierarchical nested high-thermal-conductivity heat pipe, as shown in Figure 1 , Figure 2 , Figure 3 , which comprises a pipe body shell 1 and a heat-conducting metal core 2 filled in the pipe body shell 1.
[0035] Preferably, the heat-conducting metal core 2 comprises a heat-conducting pipe 3 and a curved heat-conducting wire 4, as shown in Figure 3 , Figure 4 . The curved heat-conducting wire 4 is arranged with multiple roots along the circumferential direction of the heat-conducting pipe 3.
[0036] Preferably, the heat-conducting pipe 3 and the curved heat-conducting wire 4 of the heat-conducting metal core 2 adopt a split structure and are fixed as a whole through bonding or welding.
[0037] Specifically, the inner wall surface of the pipe body shell 1 is made into an inner capillary structure layer through the way of sintering metal powder.
[0038] Specifically, the outer surfaces of the heat-conducting pipe 3 and the curved heat-conducting wire 4 are both made into outer capillary structure layers through the way of sintering metal powder.
[0039] Further, after the outer capillary structure layers of the heat-conducting pipe 3 and the curved heat-conducting wire 4 are made, the curved heat-conducting wire 4 is fixedly installed on the outer surface of the heat-conducting pipe 3.
[0040] Preferably, as shown in Figure 4 The curved heat transfer wire 4 is a serpentine curve.
[0041] Specifically, the curved heat transfer wire 4 is composed of multiple S-shaped curve segments.
[0042] Specifically, as shown in Figure 3 , Figure 4 The curved heat transfer wire 4 extends along the axial direction of the heat pipe 3; or in other words, the extension direction of the curved heat transfer wire 4 is the axial direction of the heat pipe 3.
[0043] Further, as shown in Figure 2 A strip-shaped wire limiting block 5 is arranged inside the pipe shell 1; specifically, an arc-shaped groove is arranged on the end face of the wire limiting block 5 for clamping the curved heat transfer wire 4.
[0044] Preferably, the wire limiting block 5 extends along the axial direction of the pipe shell 1.
[0045] Preferably, multiple wire limiting blocks 5 are arranged at equal intervals along the circumferential direction of the pipe shell 1. When the heat transfer metal core 2 is loaded into the pipe shell 1, the outer edge of the curved heat transfer wire 4 is clamped into the arc-shaped groove on the surface of the wire limiting block 5.
[0046] Further, after the filling of the heat transfer metal core 2 in the heat pipe is completed, a liquid working medium is filled and the heat pipe is sealed.
[0047] Preferably, in the present embodiment, the structural body of the heat pipe is made of copper or copper-aluminum alloy.
[0048] Preferably, the heat pipe of the present embodiment is made of sintered metal powder to form the capillary structure, which has high capillary force and permeability.
[0049] Preferably, the liquid working medium filled in the heat pipe is a mixture of water and alcohol; specifically, in the present embodiment, the filling ratio of the liquid working medium is set according to the heat generation efficiency of the heat generating electronic device and the required working temperature.
[0050] In the present embodiment, the capillary structure is formed by sintering metal powder; then the liquid working medium flows in the heat pipe by the capillary force of the capillary structure, evaporates and absorbs heat at the high temperature end of the heat pipe, and then the gaseous working medium flows to the low temperature end of the heat pipe to condense. The condensed liquid working medium can flow back to the high temperature end under the action of the capillary force of the capillary structure on the inner wall of the heat pipe to absorb heat again.
[0051] In implementation, the heat pipe is filled with liquid working medium inside, when the pipe body shell 1 of the heat pipe is in contact with the heat sink and heated, the heat is transmitted to the curved heat transfer wire 4 and the heat conducting pipe 3 through the wire limiting block 5, so that the metal structure body of the heat pipe is heated quickly, and then the liquid working medium inside the heat pipe can be heated, the heat absorption phase change of the liquid working medium is promoted, the liquid working medium can move quickly to the low temperature section of the heat pipe after vaporization, and then the quick heat exchange and condensation with the pipe body shell 1 and the heat conducting metal core 2 of the low temperature section can be carried out, so that the heat is transmitted to the heat dissipation structure outside the heat pipe; the liquid working medium after condensation can flow back to the high temperature section under the action of the capillary force of the capillary structure inside the heat pipe to be heated again, so that the heat in the heat sink / heat generating equipment is circulated and discharged.
[0052] In the embodiment, the capillary structure is processed on the inner wall surface of the pipe body shell 1 and the outer surfaces of the heat conducting pipe 3 and the curved heat transfer wire 4, so that the heat pipe has a multi-layer capillary structure layer formed by the outer capillary structure layer of the heat conducting pipe 3 and the curved heat transfer wire 4 and the inner capillary structure layer of the inner wall surface of the pipe body shell 1; the heat conducting metal core 2 can quickly conduct heat to transmit the heat to the external heat dissipation device for heat dissipation, so that the heat is quickly transferred.
[0053] The structure body of the heat pipe can quickly exchange heat with the liquid working medium, the multi-layer capillary structure layer can quickly transfer the position of the working medium inside the heat pipe, and the heat transfer and heat conducting performance of the heat pipe is improved.
[0054] The above is only the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of the changes or replacements in the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. A layered nested high thermal conductivity heat pipe, characterized in that, include: The outer shell of the tube (1) and the heat-conducting metal core (2) filled inside the outer shell of the tube (1); The interior of the outer shell (1) of the tube is filled with a liquid working medium; The thermally conductive metal core (2) includes: a heat-conducting tube (3) and a curved heat transfer wire (4); The curved heat transfer wires (4) are arranged in an array at equal intervals along the circumferential direction of the heat pipe (3); The inner wall of the outer shell (1) of the tube is made into an inner capillary structure layer by sintering metal powder. The outer surfaces of the heat pipe (3) and the curved heat transfer wire (4) are both made into an outer capillary structure layer by sintering metal powder.
2. The layered nested high thermal conductivity heat pipe according to claim 1, characterized in that, The heat-conducting tube (3) and the curved heat transfer wire (4) of the heat-conducting metal core (2) adopt a split structure.
3. The layered nested high thermal conductivity heat pipe according to claim 2, characterized in that, The heat pipe (3) and the curved heat transfer wire (4) are fixed together by bonding or welding.
4. The layered nested high thermal conductivity heat pipe according to any one of claims 1-3, characterized in that, The curved heat transfer wire (4) is a serpentine curve.
5. The layered nested high thermal conductivity heat pipe according to claim 4, characterized in that, The curved heat transfer wire (4) is composed of multiple S-shaped curved segments connected at the ends.
6. The layered nested high thermal conductivity heat pipe according to claim 5, characterized in that, The curved heat transfer wire (4) extends along the axial direction of the heat transfer tube (3).
7. The layered nested high thermal conductivity heat pipe according to claim 6, characterized in that, The tube shell (1) is provided with a strip-shaped guide wire limiting block (5).
8. The layered nested high thermal conductivity heat pipe according to claim 7, characterized in that, The end face of the guide wire limiting block (5) is provided with an arc-shaped groove for engaging with the curved heat transfer guide wire (4).
9. The layered nested high thermal conductivity heat pipe according to claim 1, characterized in that, Both the outer shell (1) and the heat-conducting metal core (2) are made of copper or copper-aluminum alloy.
10. The layered nested high thermal conductivity heat pipe according to claim 1, characterized in that, The outer shell (1) of the tube is filled with a liquid working medium consisting of a mixture of water and alcohol.