Ring-shaped heat pipe with dual-diameter

Abstract

This invention relates to an annular dual-diameter heat pipe, comprising an annular tube body, capillary structure, baffles, and a working fluid. The annular tube body includes a first tube body and a second tube body with different diameters, the second tube body passing through the first tube body to seal both ends of the first tube body. The capillary structure is disposed on the inner wall surfaces of the first and second tube bodies. The baffles are inserted into the first tube body. The working fluid is disposed within the annular tube body. When heated, the working fluid forms vapor and flows within the annular tube body. The flow of the vapor is obstructed by the baffles and flows in a predetermined direction, and after cooling, it flows along the capillary structure.

Description

[Technical Field]

[0001] This case relates to heat pipes, particularly a type of annular heat pipe. [Previous Technology]

[0002] Heat pipes have the ability to conduct heat quickly and evenly, and are now widely used in heat-conducting devices such as heat exchangers or radiators. The operation of a heat pipe is to heat the working fluid inside the pipe into a gas, and then cool it back into a liquid through heat exchange, thus transferring heat in a cycle.

[0003] However, when the working fluid of a heat pipe is heated and turns into a gas, its flow direction within the pipe may change or change direction, potentially leading to uneven temperature distribution. This can cause the heat pipe to overheat in some areas while remaining cool in others, thus affecting its normal operation and reducing heat transfer efficiency. Furthermore, vapor will generate pressure loss during flow, and this pressure loss may increase when the flow direction changes, thereby affecting the performance and stability of the heat pipe.

[0004] In view of this, the applicant has devoted itself to studying the above-mentioned prior art and applied the theory to try to solve the above-mentioned problems, which has become the target of the applicant's improvement. [Summary of the Invention]

[0005] One of the objectives of this invention is to provide an annular double-diameter heat pipe that ensures the consistent flow direction of vapor within the heat pipe, thereby effectively transferring heat and ensuring the performance and stability of the heat pipe.

[0006] To achieve the above objectives, this invention relates to an annular dual-diameter heat pipe, comprising an annular tube body, a capillary structure, a baffle, and a working fluid. The annular tube body includes a first tube body and a second tube body with different diameters, the second tube body passing through the first tube body to seal both ends of the first tube body. The capillary structure is disposed on the inner wall surfaces of the first and second tube bodies. The baffle is inserted into the annular tube body. The working fluid is disposed within the annular tube body. When heated, the working fluid forms vapor and flows within the annular tube body. The flow of the vapor is obstructed by the baffle and flows in a predetermined direction, and after cooling, it flows along the capillary structure.

[0007] In one embodiment of this invention, the capillary tissue is a sheet formed by weaving metal wires.

[0008] In one embodiment of this invention, capillary tissue is arranged in a ring around the inner wall of a portion of the annular tube.

[0009] In one embodiment of this invention, capillary tissue is distributed around the entire inner wall surface of the annular tube.

[0010] In one embodiment of this case, the baffle is a column formed by sintering sintered powder.

[0011] In one embodiment of this case, the baffle is disposed in the first tube, with one side of the baffle abutting against the inner wall of the first tube and the other side abutting against the capillary tissue.

[0012] In one embodiment of this case, the first tube is a straight tube with a first diameter, and the second tube is a U-shaped tube with a second diameter.

[0013] In one embodiment of this case, the first tube and the second tube are joined by a tight fit.

[0014] In one embodiment of this invention, the annular dual-diameter heat pipe further includes a plurality of solders, which are disposed at the junction of the first tube body and the second tube body.

[0015] In one embodiment of this case, the annular dual-diameter heat pipe further includes a degassing pipe disposed on the annular pipe body.

[0016] Compared with the conventional method, the annular dual-diameter heat pipe of this case includes a first tube body and a second tube body with different diameters. The capillary structure is arranged on the inner wall surface of the first tube body and the second tube body, and the baffle is inserted in the annular tube body. Furthermore, the working fluid forms vapor after being heated and flows in the annular tube body. When the vapor in the annular tube body flows to the position of the baffle, the vapor will be blocked by the baffle 30 and flow in the opposite direction. Accordingly, the flow of vapor is made to be consistent in the direction of vapor flow in the heat pipe through the arrangement of the baffle, and after cooling, it flows along the capillary structure. The working fluid circulates liquid and gas in this way to remove the heat generated by the heating element, so as to effectively transfer heat and ensure the performance and stability of the heat pipe, thereby achieving the purpose of heat dissipation of the heating element.

Implementation Method

[0021] The detailed description and technical content of this case are explained below with reference to the accompanying drawings. However, the accompanying drawings are provided for reference and explanation only and are not intended to limit this case.

[0022] Please refer to Figures 1 and 2, which are a three-dimensional external schematic diagram and a cross-sectional view of the annular dual-diameter heat pipe of this invention, respectively. The annular dual-diameter heat pipe 1 of this invention includes an annular tube body 10, a capillary structure 20, a baffle 30, and a working fluid 40. The capillary structure 20 and the baffle 30 are disposed in the annular tube body 10, and the working fluid 40 is injected into the annular tube body 10, thereby constituting the annular dual-diameter heat pipe 1. The structure of the annular dual-diameter heat pipe 1 is described in more detail below.

[0023] In this embodiment, the annular tube 10 includes a first tube 11 and a second tube 12 of different diameters. The second tube 12 is sleeved on the first tube 11 to close both ends of the first tube 11. The capillary structure 20 is disposed on the inner wall surface of the first tube 11 and the second tube 12. For example, the capillary structure 20 can be configured as a single piece formed by braiding metal wire. It should be noted that the capillary structure 20 can be distributed around a portion of the inner wall surface of the annular tube 10, or the capillary structure 20 can be distributed around the entire inner wall surface of the annular tube 10. In this embodiment, the capillary structure 20 is distributed around the entire inner wall surface of the annular tube 10.

[0024] Furthermore, the baffle 30 can be a cylinder or a fiber column formed by sintering sintered powder. The baffle 30 is inserted into the first tube 11. In addition, the working fluid 40 is disposed in the annular tube 10 to serve as a medium for heat transfer. Accordingly, the baffle 30 and the capillary structure 20 are inserted into one side of the first tube 11 to block the advancement of the working fluid 40 as steam when heated, thereby achieving the purpose of guiding the steam. It should be noted that the sintering and forming of the baffle 30 can be achieved by inserting the capillary structure 20 and the mandrel together into the first tube 11 to form a semi-finished product, and then sintering the semi-finished product to form the finished product. Subsequently, the baffle 30 is inserted into the first tube 11 or the second tube 12.

[0025] In addition, the annular dual-diameter heat pipe 1 further includes a degassing pipe 50. The degassing pipe 50 is disposed on the annular tube body 10 to degas the interior of the annular tube body 10 to form a vacuum.

[0026] In this embodiment, the annular dual-diameter heat pipe 1 further includes a plurality of solders 60. These solders 60 are disposed at the joint of the first tube body 11 and the second tube body 12 for joining and fixing.

[0027] Please also refer to Figures 3 and 4, which are cross-sectional views of the annular dual-diameter heat pipe of this invention from both sides. The annular tube body 10 of this invention includes a first tube body 11 having a first tube diameter D and a second tube body 12 having a second tube diameter d. In this embodiment, the first tube body 11 is a straight tube and the second tube body 12 is a U-shaped tube, but this is not a limitation. In addition, the first tube diameter D is slightly larger than the second tube diameter d. In actual implementation, the dimensions of the first tube diameter D and the second tube diameter d are different. For example, the first tube diameter D can be larger than the second tube diameter d to increase the contact area with the heating element. Alternatively, the first tube diameter D can be smaller than the second tube diameter d, and can be changed according to actual needs.

[0028] Furthermore, one side of the baffle 30 in this case abuts against the inner wall of the first tube 11, and the other side abuts against the capillary tissue 20. Also, the baffle 30 and the capillary tissue 20 are plugged into one side of the first tube 11. The baffle 30 can be used to guide the steam flow of the annular tube 10.

[0029] Please refer to Figure 5 again, which is a schematic diagram of the use of the annular dual-diameter heat pipe of this invention. The annular dual-diameter heat pipe 1 of this invention is used to dissipate heat from a heating element 2. In actual use, when the working fluid 40 inside the annular tube 10 absorbs heat and forms vapor, it flows within the annular tube 10. Furthermore, when the vapor inside the annular tube 10 reaches the position of the baffle 30, the vapor is blocked by the baffle 30 and flows in the opposite direction. Accordingly, the vapor inside the annular tube 10 flows in a predetermined direction under the setting of the baffle 30, making the vapor flow direction within the heat pipe consistent, and after cooling, it flows along the capillary structure 20 and then returns to the heating element 2. Accordingly, the working fluid 40 circulates liquid and gas in this manner to remove the heat generated by the heating element 2, thereby achieving the purpose of dissipating heat from the heating element 2.

[0030] The above description is only a preferred embodiment of this case and is not intended to define the scope of the patent in this case. Other equivalent variations that utilize the spirit of the patent in this case should all fall within the scope of the patent in this case. [Simplified Explanation of the Diagram]

[0017] Figure 1 is a three-dimensional appearance schematic diagram of the annular double-diameter heat pipe of this case.

[0018] Figure 2 is a cross-sectional view of the annular double-diameter heat pipe of this case.

[0019] Figures 3 and 4 are cross-sectional views of the annular double-diameter heat pipe of this case in two directions.

[0020] Figure 5 is a schematic diagram of the use of the annular double-diameter heat pipe in this case.

Claims

1. A ring-shaped dual-diameter heat pipe, comprising: a ring-shaped tube body including a first tube body and a second tube body of different diameters, the second tube body being sleeved on the first tube body to seal both ends of the first tube body; a capillary structure disposed on the inner wall surfaces of the first tube body and the second tube body; a baffle body inserted into the ring-shaped tube body; and a working fluid injected into the ring-shaped tube body; wherein, When the working fluid is heated, it forms a vapor that flows in the annular tube. When the vapor in the annular tube reaches the position of the baffle, the vapor flow is blocked by the baffle and flows in the opposite direction, so that the vapor flow direction in the heat pipe is consistent and flows along the capillary after cooling.

2. The annular dual-diameter heat pipe as described in claim 1, wherein the capillary structure is a single piece formed by braiding metal wires.

3. The annular double-diameter heat pipe as described in claim 1, wherein the capillary structure is arranged in a ring on the inner wall surface of a portion of the annular tube body.

4. The annular double-diameter heat pipe as described in claim 1, wherein the capillary structure is distributed around the entire inner wall surface of the annular tube body.

5. The annular double-diameter heat pipe as described in claim 1, wherein the baffle is a column formed by sintering sintered powder.

6. The annular dual-diameter heat pipe as described in claim 1, wherein the baffle is disposed in the first tube body, one side of the baffle abuts against the inner wall surface of the first tube body, and the other side abuts against the capillary tissue.

7. The annular dual-diameter heat pipe as described in claim 1, wherein the first tube body is a straight tube with a first diameter, and the second tube body is a U-shaped tube with a second diameter.

8. The annular double-diameter heat pipe as described in claim 1, wherein the first tube body and the second tube body are joined by a tight fit.

9. The annular dual-diameter heat pipe as claimed in claim 1, further comprising a plurality of solders disposed at the junction of the first tube body and the second tube body.

10. The annular double-diameter heat pipe as described in claim 1, further comprising a degassing pipe disposed on the annular pipe body.

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