CN213147501U - Composite heat pipe - Google Patents
Composite heat pipe Download PDFInfo
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- CN213147501U CN213147501U CN202021117591.8U CN202021117591U CN213147501U CN 213147501 U CN213147501 U CN 213147501U CN 202021117591 U CN202021117591 U CN 202021117591U CN 213147501 U CN213147501 U CN 213147501U
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Abstract
The utility model discloses a composite heat pipe, which comprises an evaporation end pipe body and a condensation end pipe body, wherein one end of the evaporation end pipe body is hermetically connected with one end of the condensation end pipe body, and the center of the evaporation end pipe body coincides with the center of the condensation end pipe body at the joint of the evaporation end pipe body and the condensation end pipe body; at least one of the outer diameter, the wall thickness and the inner wall structure of the evaporating end pipe body and the condensing end pipe body is different. The composite heat pipe of the utility model has the advantages that at least one of the external diameter, the wall thickness and the inner wall structure of the evaporating end pipe body and the condensing end pipe body is different, so that the evaporating end pipe body and the condensing end pipe body can respectively adopt respective optimized structures, and the heat radiation performance of the heat pipe can be effectively improved by the combined connection of the evaporating end pipe body and the condensing end pipe body which adopt the optimized structures; meanwhile, the evaporation end pipe bodies and the condensation end pipe bodies with different structures are flexibly combined and connected, so that different space design requirements can be met.
Description
Technical Field
The utility model relates to a heat pipe technical field especially relates to a compound heat pipe.
Background
With the rapid development of electronic technology, the development of miniaturization, light weight and high power of electronic equipment causes the effective heat dissipation space inside the equipment to be reduced, the heat productivity of electronic components is increased day by day, the problems of local excessive heat generation and uneven heat flow distribution are easily caused, the stability of the electronic equipment is affected, and the heat dissipation problem becomes the key for further development of the electronic equipment.
The heat pipe is a heat transfer element with strong heat conduction capability, fully utilizes the heat conduction principle and the rapid heat transfer property of a phase change medium, has the characteristic of large heat diffusion area due to contact with a small heat source, can rapidly transfer the heat of a heating object to the outside of the heat source through the heat pipe, and effectively solves the problem of hot spots generated by local overhigh heat flow of electronic equipment. However, the conventional heat pipe has a problem that the evaporation end and the condensation end are limited to be integrally designed, so that the heat dissipation performance of the heat pipe cannot be further optimized.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can effectively promote the composite heat pipe of heat dispersion.
To achieve the purpose, the utility model adopts the following technical proposal:
a composite heat pipe comprises an evaporation end pipe body and a condensation end pipe body, wherein one end of the evaporation end pipe body is hermetically connected with one end of the condensation end pipe body, and the center of the evaporation end pipe body is coincided with the center of the condensation end pipe body at the joint of the evaporation end pipe body and the condensation end pipe body; at least one of the outer diameter, the wall thickness and the inner wall structure of the evaporating end pipe body and the condensing end pipe body is different.
In some embodiments, the evaporation end tube and the condensation end tube have different inner wall structures.
In some embodiments, the inner wall of one of the evaporation end pipe body and the condensation end pipe body is smooth, and the inner wall of the other is provided with a groove.
In some embodiments, the evaporation end pipe body and the condensation end pipe body are respectively provided with a plurality of grooves on inner walls thereof, and the shapes and sizes of the grooves on the inner walls thereof and/or the distance between two adjacent grooves are different.
In some embodiments, the inner walls of both the evaporation end tube and the condensation end tube are identical in structure.
In some embodiments, the inner walls of both the evaporation end tube and the condensation end tube are smooth.
In some embodiments, the evaporation end pipe body and the condensation end pipe body are respectively provided with a plurality of grooves at intervals on inner walls thereof, and the shapes and the sizes of the grooves on the inner walls thereof and the distance between two adjacent grooves are the same.
In some embodiments, the groove on the inner wall of the evaporation end pipe is a longitudinal groove parallel to the central axis of the evaporation end pipe or forming a preset angle with the central axis of the evaporation end pipe;
the grooves on the inner wall of the condensation end pipe body are longitudinal grooves which are parallel to the central axis of the condensation end pipe body or form a preset angle with the central axis of the condensation end pipe body.
In some embodiments, the cross-sectional shape of the groove is U-shaped, V-shaped, U-shaped, or arc-shaped.
In some embodiments, the evaporation end pipe body and the condensation end pipe body are both provided with capillary structures on the inner walls, and the cross section of each capillary structure is annular or strip-shaped.
The utility model discloses compound heat pipe has following beneficial effect at least: by designing at least one of the pipe outer diameter, the wall thickness and the inner wall structure of the evaporation end pipe body and the condensation end pipe body to be different, the evaporation end pipe body and the condensation end pipe body can respectively adopt respective optimized structures, and the heat dissipation performance of the heat pipe can be effectively improved by adopting the combined connection of the evaporation end pipe body and the condensation end pipe body with the optimized structures; meanwhile, the evaporation end pipe bodies and the condensation end pipe bodies with different structures are flexibly combined and connected, so that different space design requirements can be met.
Drawings
Fig. 1 is a schematic structural diagram of a composite heat pipe according to an embodiment of the present invention;
fig. 2 is a second schematic structural diagram of a composite heat pipe according to an embodiment of the present invention;
fig. 3-4 are schematic structural views of an evaporation end pipe body and a condensation end pipe body with the same outer diameter and different wall thicknesses according to an embodiment of the present invention;
fig. 5-6 are schematic structural views of an evaporation end tube body and a condensation end tube body with the same outer diameter and different inner wall structures according to an embodiment of the present invention;
fig. 7-8 are two schematic structural views of an evaporation end tube body and a condensation end tube body with the same outer diameter and different inner wall structures according to the embodiment of the present invention;
fig. 9-10 are schematic structural views of evaporating-end tubes and condensing-end tubes with different outer diameters and different wall thicknesses according to an embodiment of the present invention;
fig. 11 to 12 are schematic structural views of an evaporation end tube body and a condensation end tube body with different outer diameters and different inner wall structures according to an embodiment of the present invention;
fig. 13-14 are two schematic structural views of an evaporation end tube body and a condensation end tube body with different outer diameters and different inner wall structures according to the embodiment of the present invention;
fig. 15 and 16 are cross-sectional views of a composite heat pipe provided by an embodiment of the present invention, in which the cross-sectional shape of the capillary structure is a ring shape;
fig. 17 to fig. 20 are cross-sectional views of a composite heat pipe provided in an embodiment of the present invention, in which the cross-sectional shape of the capillary structure is a bar shape;
fig. 21 is a schematic view of a necking process according to an embodiment of the present invention;
fig. 22 is a schematic view of a flaring process according to an embodiment of the present invention;
fig. 23 is a flowchart of a manufacturing process of the composite heat pipe according to the embodiment of the present invention;
fig. 24 is an enlarged view of a close-fitting joint between the evaporating end pipe body and the condensing end pipe body according to an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The present embodiment provides a composite heat pipe, as shown in fig. 1 to 20, the composite heat pipe includes an evaporation end pipe body and a condensation end pipe body, one end of the evaporation end pipe body and one end of the condensation end pipe body are hermetically connected, and at a connection position of the evaporation end pipe body and the condensation end pipe body, a center of the evaporation end pipe body coincides with a center of the condensation end pipe body; at least one of the outer diameter, the wall thickness and the inner wall structure of the evaporating end pipe body and the condensing end pipe body is different.
According to the composite heat pipe, at least one of the pipe outer diameter, the wall thickness and the inner wall structure of the evaporation end pipe body and the condensation end pipe body is designed to be different, so that the evaporation end pipe body and the condensation end pipe body can respectively adopt respective optimized structures, and the heat radiation performance of the heat pipe can be effectively improved by adopting the combined connection of the evaporation end pipe body and the condensation end pipe body with the optimized structures; meanwhile, the evaporation end pipe bodies and the condensation end pipe bodies with different structures are flexibly combined and connected, so that different space design requirements can be met.
Specifically, "at least one of the tube outer diameter, the wall thickness, and the inner wall structure of both the evaporating-end tube body and the condensing-end tube body are different" includes the following seven cases: (1) the outer diameters of the evaporating end pipe body and the condensing end pipe body are the same, and the wall thickness and the inner wall structure are different; (2) the wall thickness of the evaporation end pipe body is the same as that of the condensation end pipe body, and the outer diameter and the inner wall structure of the evaporation end pipe body are different from those of the condensation end pipe body; (3) the inner wall structures of the evaporation end pipe body and the condensation end pipe body are the same, and the outer diameter and the wall thickness of the pipe are different; (4) the outer diameter and the wall thickness of the evaporating end pipe body and the condensing end pipe body are the same, and the inner wall structures are different; (5) the outer diameter and the inner wall of the evaporating end pipe body and the condensing end pipe body are the same in structure, and the wall thicknesses are different; (6) the wall thickness and the inner wall structure of the evaporating end pipe body and the condensing end pipe body are the same, and the outer diameters of the pipes are different; (7) the evaporating end pipe body and the condensing end pipe body are different in pipe outer diameter, wall thickness and inner wall structure.
In some embodiments, the inner wall structure of both the evaporation end tube and the condensation end tube is different. Wherein, in some embodiments, the inner wall structures of the evaporation end pipe body and the condensation end pipe body are different from each other in that: the inner wall of one of the evaporating end pipe body and the condensing end pipe body is a smooth surface, and the inner wall of the other pipe body is provided with a groove T. In other embodiments, the inner wall structure of the evaporation end pipe body and the condensation end pipe body are different from each other in that: the inner walls of the evaporation end pipe body and the condensation end pipe body are respectively provided with a plurality of grooves T, and the shapes and the sizes of the grooves T on the inner walls of the evaporation end pipe body and the condensation end pipe body and/or the space between two adjacent grooves T are different.
In some embodiments, the inner walls of both the evaporation end tube and the condensation end tube are identical in structure. Wherein, in some embodiments, the inner wall structures of the evaporation end pipe body and the condensation end pipe body are the same as that of the evaporation end pipe body and the condensation end pipe body: the inner walls of the evaporation end pipe body and the condensation end pipe body are smooth surfaces. In other embodiments, the inner wall structure of the evaporation end pipe body and the condensation end pipe body are the same as that of the evaporation end pipe body and the condensation end pipe body: the inner walls of the evaporation end pipe body and the condensation end pipe body are respectively provided with a plurality of grooves T which are arranged at intervals, and the shapes and the sizes of the grooves T on the inner walls of the evaporation end pipe body and the condensation end pipe body and the intervals between two adjacent grooves T are the same.
In some embodiments, the groove T on the inner wall of the evaporation end pipe is a longitudinal groove parallel to the central axis of the evaporation end pipe or forming a predetermined angle with the central axis of the evaporation end pipe; the groove T on the inner wall of the condensation end pipe body is a longitudinal groove which is parallel to the central axis of the condensation end pipe body or forms a preset angle with the central axis of the condensation end pipe body.
Of course, in other embodiments, the grooves T may be in other forms, for example, the grooves T on the inner wall of the evaporating end pipe body may be annular grooves arranged around the circumference of the evaporating end pipe body, and the grooves T on the inner wall of the condensing end pipe body may be annular grooves arranged around the circumference of the condensing end pipe body.
Alternatively, the cross-sectional shape of the groove T may be, but is not limited to, U-shaped, V-shaped, U-shaped or arc-shaped, for example, in the embodiment shown in fig. 5 and 11, the cross-sectional shape of the groove T is V-shaped.
Various combinations of evaporation end tubes and condensation end tubes are described below in exemplary embodiments with reference to fig. 3-14:
as shown in fig. 3 and 4, one of a1 in fig. 3 and a2 in fig. 4 represents an evaporation end tube body, the other represents a condensation end tube body, the evaporation end tube body and the condensation end tube body have the same outer diameter and different wall thickness, and the inner walls of the evaporation end tube body and the condensation end tube body are smooth.
As shown in fig. 5 and 6, one of a1 in fig. 5 and a2 in fig. 6 represents an evaporation end tube body, the other represents a condensation end tube body, the outer diameters of the evaporation end tube body and the condensation end tube body are the same, the inner wall of one of the evaporation end tube body and the condensation end tube body is smooth, and the inner wall of the other is provided with a groove T.
As shown in fig. 7 and 8, one of a1 in fig. 7 and a2 in fig. 8 represents an evaporation end tube, the other represents a condensation end tube, the outer diameters of the evaporation end tube and the condensation end tube are the same, and a plurality of grooves T are formed in the inner walls of the evaporation end tube and the condensation end tube, but the shapes and the sizes of the grooves T on the inner walls of the evaporation end tube and the condensation end tube are different from each other, and the distance between two adjacent grooves T is different from each other.
As shown in fig. 9 and 10, one of a1 in fig. 9 and a2 in fig. 10 represents an evaporation end tube body, and the other represents a condensation end tube body, and the outer diameter and the wall thickness of both the evaporation end tube body and the condensation end tube body are different, but the inner walls of both the evaporation end tube body and the condensation end tube body are smooth.
As shown in fig. 11 and 12, one of a1 in fig. 11 and a2 in fig. 12 represents an evaporation end tube body, the other represents a condensation end tube body, the outer diameters of the evaporation end tube body and the condensation end tube body are different, the inner wall of one of the evaporation end tube body and the condensation end tube body is a smooth surface, and the inner wall of the other is provided with a groove T.
As shown in fig. 13 and 14, one of a1 in fig. 13 and a2 in fig. 14 represents an evaporation end tube, the other represents a condensation end tube, the outer diameters of the evaporation end tube and the condensation end tube are different, the inner walls of the evaporation end tube and the condensation end tube are both provided with a plurality of grooves T, but the shapes and the sizes of the grooves T on the inner walls of the evaporation end tube and the condensation end tube are different from each other, and the distances between two adjacent grooves T are different from each other.
In some embodiments, the inner walls of both the evaporation end tube body and the condensation end tube body are provided with capillary structures B, and the cross-sectional shapes of the capillary structures B are ring-shaped (as shown in fig. 15 and 16, a in fig. 15 and 16 represents the evaporation end tube body or the condensation end tube body) or strip-shaped (as shown in fig. 17 to 20, a in fig. 17 to 20 represents the evaporation end tube body or the condensation end tube body). Specifically, the capillary structure B is sintered on the inner walls of the evaporation end pipe body and the condensation end pipe body, and the material of the capillary structure B can be coral-shaped copper powder B1, mesh B2 or woven mesh B3.
In some embodiments, the cross-sectional shape of the capillary structure B is a strip shape, and the number of the capillary structures B is two, and the two capillary structures B are oppositely disposed (as shown in fig. 19 and 20).
In some embodiments, the evaporation end tube and the condensation end tube are both copper tubes, and the joint of the evaporation end tube and the condensation end tube can be hermetically connected by placing solder C (such as a brazing ring or a copper-coated solder paste) for high-temperature soldering (as shown in fig. 1 and 2); the inner walls of the evaporation end pipe body and the condensation end pipe body are respectively provided with a capillary structure B, the inside of the evaporation end pipe body and the inside of the condensation end pipe body are vacuumized and then filled with working fluid (such as ultrapure water), and the other end of the evaporation end pipe body and the other end of the condensation end pipe body are respectively sealed through a sealing cover D.
In actual production, the whole composite heat pipe can be bent and/or flattened according to the application requirements of customers, the structure of the bent and flattened composite heat pipe is shown in fig. 2, and the cross-sectional shape of the flattened structure of the composite heat pipe is shown in fig. 16, 18 and 20.
Referring to fig. 23 (one of a1 and a2 in fig. 23 represents an evaporation end tube body, and the other represents a condensation end tube body), the composite heat pipe is prepared as follows:
(a) designing the outer diameter, the wall thickness and the inner wall structure of the evaporating end pipe body according to the application requirements of customers, and determining the outer diameter, the wall thickness and the inner wall structure of the condensing end pipe body according to simulation;
(b) connecting the evaporating end tube body and the condensing end tube body by a necking process (as shown in fig. 21) or a flaring process (as shown in fig. 22), namely connecting the connecting end A11 of A1 with the connecting end A21 of A2;
(c) clamping the joint of the evaporating end pipe body and the condensing end pipe body by using a tool clamp P so as to enable the evaporating end pipe body and the condensing end pipe body to be in tight fit connection, wherein the tight fit joint of the evaporating end pipe body and the condensing end pipe body is shown in figure 24;
(d) the optimal capillary structure B is designed by matching with the structures of the evaporation end pipe body and the condensation end pipe body, coral-shaped copper powder B1, a mesh B2 or a woven mesh B3 can be adopted as the capillary structure B, and the filling sintering process of the capillary structure B is carried out on the inner walls of the evaporation end pipe body and the condensation end pipe body, so that the capillary structure B is fixed on the inner walls of the evaporation end pipe body and the condensation end pipe body;
(e) placing a solder C at the close-fitting joint of the evaporation end pipe body and the condensation end pipe body, and then placing the pipe body into a high-temperature furnace body for high-temperature welding and sealing;
(f) and (4) injecting working fluid, vacuumizing, sealing two ends of the product by using a sealing cover D, and finishing a finished product according to the forming requirement of a customer (for example, bending, flattening and hydroforming to finish the finished product).
To sum up, the utility model discloses a compound heat pipe has following advantage at least: (1) by designing at least one of the pipe outer diameter, the wall thickness and the inner wall structure of the evaporation end pipe body and the condensation end pipe body to be different, the evaporation end pipe body and the condensation end pipe body can be combined and connected after being respectively subjected to structure optimization design according to application requirements, the advantages of getting good and getting good according to the structural characteristics of the pipe bodies are achieved, the heat dissipation performance of the composite heat pipe is effectively improved, and the heat dissipation performance is improved by about 30% compared with that of a traditional heat pipe with the same shape (namely the evaporation end pipe body and the condensation end pipe body are integrally designed); (2) the evaporation end pipe body and the condensation end pipe body are combined and connected by adopting different wall thicknesses, outer diameters and/or inner wall structures, so that the problem of internal design space limitation of electronic equipment can be solved; (3) the evaporation end pipe body and the condensation end pipe body are combined by using structures with different wall thicknesses, outer diameters and/or inner walls, so that the loss of raw materials can be effectively reduced, and the cost of the raw materials is reduced.
It is to be noted that, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A composite heat pipe is characterized by comprising an evaporation end pipe body and a condensation end pipe body, wherein one end of the evaporation end pipe body is hermetically connected with one end of the condensation end pipe body, and the center of the evaporation end pipe body coincides with the center of the condensation end pipe body at the joint of the evaporation end pipe body and the condensation end pipe body; at least one of the outer diameter, the wall thickness and the inner wall structure of the evaporating end pipe body and the condensing end pipe body is different.
2. A composite heat pipe according to claim 1, wherein the inner wall structures of both the evaporation end pipe body and the condensation end pipe body are different.
3. A composite heat pipe according to claim 2, wherein an inner wall of one of the evaporation end pipe body and the condensation end pipe body is smooth, and a groove T is formed in an inner wall of the other.
4. A composite heat pipe according to claim 2, wherein the evaporation end pipe body and the condensation end pipe body are respectively provided with a plurality of grooves T on inner walls thereof, and shapes and sizes of the grooves T on the inner walls thereof and/or a distance between two adjacent grooves T are different.
5. A composite heat pipe according to claim 1, wherein the inner wall structures of both the evaporation end pipe body and the condensation end pipe body are the same.
6. A composite heat pipe according to claim 5, wherein the inner walls of both the evaporation end pipe body and the condensation end pipe body are smooth.
7. The composite heat pipe of claim 5, wherein the inner walls of the evaporation end pipe body and the condensation end pipe body are respectively provided with a plurality of grooves T arranged at intervals, and the shapes and the sizes of the grooves T on the inner walls of the evaporation end pipe body and the condensation end pipe body and the intervals between two adjacent grooves T are the same.
8. The composite heat pipe according to claim 4 or 7, wherein the groove T on the inner wall of the evaporation end pipe body is a longitudinal groove parallel to the central axis of the evaporation end pipe body or forming a predetermined angle with the central axis of the evaporation end pipe body;
the grooves T on the inner wall of the condensation end pipe body are longitudinal grooves which are parallel to the central axis of the condensation end pipe body or form a preset angle with the central axis of the condensation end pipe body.
9. A composite heat pipe according to claim 4 or 7, wherein the cross-sectional shape of said groove T is U-shaped, V-shaped, U-shaped or arc-shaped.
10. A composite heat pipe according to claim 1, wherein the inner walls of the evaporation end pipe body and the condensation end pipe body are provided with capillary structures B, and the cross-sectional shapes of the capillary structures B are annular or strip-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021117591.8U CN213147501U (en) | 2020-06-16 | 2020-06-16 | Composite heat pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021117591.8U CN213147501U (en) | 2020-06-16 | 2020-06-16 | Composite heat pipe |
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| Publication Number | Publication Date |
|---|---|
| CN213147501U true CN213147501U (en) | 2021-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021117591.8U Active CN213147501U (en) | 2020-06-16 | 2020-06-16 | Composite heat pipe |
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| CN (1) | CN213147501U (en) |
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- 2020-06-16 CN CN202021117591.8U patent/CN213147501U/en active Active
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Address after: 510623 floors 1-4 of building a and 1-4 of building B in aimeda hi tech Industrial Park, Xinshi community, Dalang street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Baode South China (Shenzhen) thermal energy system Co.,Ltd. Address before: 510623 floors 1-4 of building a and 1-4 of building B in aimeda hi tech Industrial Park, Xinshi community, Dalang street, Longhua District, Shenzhen City, Guangdong Province Patentee before: Aavid Shenzen Thermal Energy System Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |