A bell-shaped furnace for heat pipe sintering
By installing heat dissipation components and lifting cylinders in the bell-shaped furnace, the problem of traditional bell-shaped furnaces requiring cooling equipment for temperature reduction is solved, achieving rapid cooling and efficient processing via heat pipes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUIZHOU FENGKAI ELECTRONIC TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional bell-shaped furnaces can only sinter heat pipes. After sintering, the heat pipes need to be cooled in a cooling device, which results in long waiting times, high costs, and reduced heating efficiency.
A bell-shaped furnace with heat dissipation components was designed. External gas is drawn in by a fan and cooled by a cooling rod. The low-temperature gas is then transported to the heating hood after passing through a filter screen to dissipate heat from the heat pipes. The position of the heating hood is adjusted by a lifting cylinder to achieve efficient cooling.
This technology enables rapid cooling after heat pipe sintering, improving processing efficiency and reducing costs.
Smart Images

Figure CN224285370U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat pipe sintering technology, specifically a bell-shaped furnace for heat pipe sintering. Background Technology
[0002] As is well known, the specific steps of heat pipe sintering are as follows: a long copper tube is cut to a specified length, the copper tube is cleaned to remove impurities, a stainless steel mandrel is inserted into the center of the copper tube and positioned in the exact middle of the copper tube using a mold, then copper powder of a specified particle size is filled in, and the copper powder is made to reach a certain density by a vibration device to control the porosity of the capillary structure after sintering. The copper powder is then sintered at high temperature in a bell furnace or continuous furnace under a reducing atmosphere. This process is usually carried out in a reducing atmosphere to ensure that the copper powder can be sintered uniformly to form a dense capillary structure. After sintering, the end of the heat pipe is treated by narrowing and welding to seal it. Through these steps, the bell furnace plays a key role in the heat pipe manufacturing process, ensuring that the copper powder can be sintered uniformly to form the required capillary structure, thereby affecting the performance and lifespan of the heat pipe.
[0003] However, traditional bell-shaped furnaces have the following drawbacks:
[0004] Traditional bell-shaped furnaces can only sinter heat pipes. Users need to place the sintered heat pipes in a cooling device to cool them down before processing them. This process is time-consuming, costly, and reduces the heating efficiency of the heat pipes. Utility Model Content
[0005] The purpose of this invention is to provide a bell furnace for heat pipe sintering, in order to solve the problem mentioned in the background art that traditional bell furnaces can only perform sintering operations on heat pipes. Users need to place the sintered heat pipes in a cooling device for cooling before processing, which results in long cooling time, high cost, and reduced heating efficiency of the heat pipes.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a bell-shaped furnace for heat pipe sintering, comprising a sealed furnace platform, a circulating fan fixedly installed at the center of the top of the sealed furnace platform, an inner cover fixedly installed at the top of the circulating fan, a heating cover provided on the outer side of the inner cover, a cooling pipe fixedly connected to the top of the heating cover, a heat dissipation assembly fixedly connected to the top of the cooling pipe, combustion platforms fixedly installed on both sides of the inner wall of the heating cover, and nozzles fixedly installed on opposite sides of the two combustion platforms. The heat dissipation assembly includes a heat dissipation housing and a fan. The top of the inner wall of the heat sink housing is fixedly connected to the top of the fan. A cooling rod located at the bottom of the fan is fixedly installed on the heat sink housing. Several air inlets are opened at the top of the heat sink housing, and an air outlet is opened at the bottom of the heat sink housing. A filter screen is fixedly installed inside the air outlet. When the fan is powered on, it starts and draws in ambient gas through the air inlets. The drawn gas comes into contact with the cooling rod. When the cooling rod is powered on, it starts to cool the gas. The low-temperature gas is filtered to dissipate heat from impurities and then delivered to the heating hood to complete the heat dissipation and cooling of the heat pipe.
[0007] Preferably, the heat dissipation housing is fixedly connected to the cooling pipe through the air outlet, and the heat dissipation component is installed in the cooling pipe through the heat dissipation housing.
[0008] Preferably, a number of convection plates are fixedly installed inside the inner cover.
[0009] Preferably, diffusers are fixedly installed at the connection points of several nozzles and the combustion platform, and the installation of diffusers increases the heating area of the gas ejected from the nozzles.
[0010] Preferably, a solenoid valve is fixedly installed in the middle of the cooling pipe. When cooling is required, the user opens the solenoid valve, and low-temperature gas is transported through the cooling pipe to the heating hood to cool and dissipate heat from the sintered heat pipe.
[0011] Preferably, height rods are fixedly installed on both sides of the top of the sealed furnace platform, and lifting blocks are slidably connected to the middle of the two height rods. Two lifting cylinders are fixedly installed on the sealed furnace platform, each located on one side of a height rod. The movable ends of the two lifting cylinders are fixedly connected to the bottom ends of the two lifting blocks, and the opposite sides of the two lifting blocks are fixedly connected to the bottom ends of the heating cover on both sides. When the lifting cylinders extend and retract, they push the lifting blocks from the bottom, causing the lifting blocks to slide along the height rods. During the sliding process, the lifting blocks drive the heating cover to move synchronously, thereby adjusting the distance between the heating cover and the inner cover.
[0012] Preferably, fuel tanks are fixedly installed at the top of both sides of the heating hood, and preheating pipes extending into the interior of the heating hood are fixedly connected to the top of both fuel tanks. Conveying pipes are fixedly connected to the bottom of both fuel tanks, and the ends of the two conveying pipes away from the fuel tanks are fixedly connected to the sides of the two combustion platforms respectively. The high-temperature gas inside the heating hood can preheat the fuel in the fuel tanks in a timely manner, and the preheated fuel is conveyed to the combustion platform through the conveying pipes for combustion heating.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a heat dissipation component fan to draw in ambient gas through the air inlet, the drawn gas comes into contact with the cooling rod, and after the cooling rod is powered on, the gas is started to cool down and dissipate heat. The low-temperature gas is filtered through the filter screen to dissipate heat from impurities and then delivered to the heating cover to complete the heat dissipation and cooling of the heat pipe, thereby reducing the time required for heat pipe sintering and cooling and improving the heat pipe processing efficiency. Attached Figure Description
[0014] Figure 1 This is a side view of the present invention;
[0015] Figure 2 This is a cross-sectional view of the present invention;
[0016] Figure 3 This is a cross-sectional view of the heat dissipation component of this utility model;
[0017] Figure 4 This is a connection diagram of the heat dissipation component and cooling pipe of this utility model.
[0018] In the diagram: 1. Sealed furnace platform; 2. Lifting cylinder; 3. Lifting block; 4. Height rod; 5. Fuel tank; 6. Preheating pipe; 7. Conveying pipe; 8. Cooling pipe; 9. Heat dissipation assembly; 91. Heat dissipation housing; 92. Air inlet; 93. Fan; 94. Cooling rod; 95. Filter screen; 96. Air outlet; 10. Solenoid valve; 11. Heating cover; 12. Combustion platform; 13. Diffuser; 14. Circulating fan; 15. Inner cover; 16. Convection plate; 17. Nozzle. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0020] Please see Figure 1-4This utility model provides a bell-shaped furnace for heat pipe sintering, including a sealed furnace platform 1. A circulating fan 14 is fixedly installed at the middle of the top of the sealed furnace platform 1. An inner cover 15 is fixedly installed at the top of the circulating fan 14. A heating cover 11 is provided on the outer side of the inner cover 15. A cooling pipe 8 is fixedly connected to the top of the heating cover 11. A heat dissipation assembly 9 is fixedly connected to the top of the cooling pipe 8. Combustion platforms 12 are fixedly installed on both sides of the inner wall of the heating cover 11. A nozzle 17 is fixedly installed on the opposite side of each of the two combustion platforms 12. The heat dissipation assembly 9 includes a heat dissipation housing 91 and a fan 93. The top of the inner wall of the heat dissipation housing 91... A cooling rod 94 is fixedly installed on the heat sink housing 91 at the bottom of the fan 93 and fixedly connected to the top of the fan 93. Several air inlets 92 are opened at the top of the heat sink housing 91 and an air outlet 96 is opened at the bottom of the heat sink housing 91. A filter screen 95 is fixedly installed inside the air outlet 96. When the fan 93 is powered on, it starts and draws in ambient gas through the air inlets 92. The drawn gas comes into contact with the cooling rod 94. When the cooling rod 94 is powered on, it starts to cool the gas. The low-temperature gas is then delivered to the heating cover 11 after the filter screen 95 cools the impurities, thus completing the cooling of the heat pipe.
[0021] The heat dissipation housing 91 is fixedly connected to the cooling pipe 8 through the air outlet 96, and the heat dissipation component 9 is installed in the cooling pipe 8 through the heat dissipation housing 91.
[0022] Several convection plates 16 are fixedly installed inside the inner cover 15.
[0023] A diffuser 13 is fixedly installed at the connection between several nozzles 17 and the combustion platform 12. The installation of the diffuser 13 increases the heating area of the gas ejected from the nozzles 17.
[0024] A solenoid valve 10 is fixedly installed in the middle of the cooling pipe 8. When cooling is required, the user opens the solenoid valve 10, and the low-temperature gas is delivered to the heating cover 11 through the cooling pipe 8 to cool and dissipate heat from the sintered heat pipe.
[0025] Height rods 4 are fixedly installed on both sides of the top of the sealed furnace platform 1. Lifting blocks 3 are slidably connected to the middle of the two height rods 4. Two lifting cylinders 2 are fixedly installed on the sealed furnace platform 1, each located on one side of the height rod 4. The movable ends of the two lifting cylinders 2 are fixedly connected to the bottom ends of the two lifting blocks 3. The opposite sides of the two lifting blocks 3 are fixedly connected to the bottom ends of the heating cover 11 on both sides. The lifting cylinders 2 extend and retract, pushing the lifting blocks 3 from the bottom. The lifting blocks 3 slide along the height rods 4. During the sliding process, the lifting blocks 3 drive the heating cover 11 to move synchronously, completing the adjustment of the distance between the heating cover 11 and the inner cover 15.
[0026] Fuel tanks 5 are fixedly installed on the top of both sides of the heating cover 11. The top of each fuel tank 5 is fixedly connected to a preheating pipe 6 extending into the interior of the heating cover 11. The bottom of each fuel tank 5 is fixedly connected to a conveying pipe 7. The end of each conveying pipe 7 away from the fuel tank 5 is fixedly connected to the side of each of the two combustion platforms 12 facing each other. The high-temperature gas inside the heating cover 11 can preheat the fuel in the fuel tank 5 in a timely manner. The preheated fuel is conveyed to the combustion platform 12 through the conveying pipe 7 for combustion heating.
[0027] In this embodiment, the product is placed on the inner cover 15. The high-temperature gas inside the heating cover 11 can preheat the fuel in the fuel tank 5 as needed. The preheated fuel is then transported to the combustion platform 12 through the conveying pipe 7 for combustion and heating. The lifting cylinder 2 extends and retracts, pushing the lifting block 3 from the bottom. The lifting block 3 slides along the height rod 4, and during its sliding motion, it drives the heating cover 11 to move synchronously, thus adjusting the distance between the heating cover 11 and the inner cover 15. When cooling is required, the user opens the solenoid valve 10, and low-temperature gas is transported to the heating cover 11 through the cooling pipe 8 to cool and dissipate heat from the sintered heat pipe. The fan 93 is powered on and starts, drawing in ambient gas through the air inlet 92. The drawn gas comes into contact with the cooling rod 94, which is powered on and starts to cool and dissipate heat. The low-temperature gas is then filtered through the filter screen 95 to dissipate impurities before being transported to the heating cover 11, thus cooling and dissipating heat from the heat pipe.
[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A bell-shaped furnace for heat pipe sintering, comprising a sealed furnace platform (1), characterized in that: A circulating fan (14) is fixedly installed at the middle of the top of the sealed furnace platform (1). An inner cover (15) is fixedly installed at the top of the circulating fan (14). A heating cover (11) is provided on the outside of the inner cover (15). A cooling pipe (8) is fixedly connected to the top of the heating cover (11). A heat dissipation component (9) is fixedly connected to the top of the cooling pipe (8). Combustion platforms (12) are fixedly installed on both sides of the inner wall of the heating cover (11). A heating element (9) is fixedly installed on the opposite side of each of the two combustion platforms (12). Nozzle (17), the heat dissipation assembly (9) includes a heat dissipation housing (91) and a fan (93). The top of the inner wall of the heat dissipation housing (91) is fixedly connected to the top of the fan (93). A cooling rod (94) located at the bottom of the fan (93) is fixedly installed on the heat dissipation housing (91). Several air inlets (92) are opened at the top of the heat dissipation housing (91). An air outlet (96) is opened at the bottom of the heat dissipation housing (91). A filter screen (95) is fixedly installed inside the air outlet (96).
2. The bell-shaped furnace for heat pipe sintering according to claim 1, characterized in that: The heat dissipation housing (91) is fixedly connected to the cooling pipe (8) through the air outlet (96).
3. The bell-shaped furnace for heat pipe sintering according to claim 1, characterized in that: Several convection plates (16) are fixedly installed inside the inner cover (15).
4. A bell-shaped furnace for heat pipe sintering according to claim 1, characterized in that: A diffuser (13) is fixedly installed at the connection between several of the nozzles (17) and the combustion platform (12).
5. A bell-shaped furnace for heat pipe sintering according to claim 1, characterized in that: A solenoid valve (10) is fixedly installed in the middle of the cooling pipe (8).
6. A bell-shaped furnace for heat pipe sintering according to claim 1, characterized in that: Height rods (4) are fixedly installed on both sides of the top of the sealed furnace platform (1). Lifting blocks (3) are slidably connected to the middle of the two height rods (4). Two lifting cylinders (2) are fixedly installed on the sealed furnace platform (1) respectively located on one side of the height rods (4). The movable ends of the two lifting cylinders (2) are fixedly connected to the bottom ends of the two lifting blocks (3) respectively. The opposite sides of the two lifting blocks (3) are fixedly connected to the bottom ends of the heating cover (11) on both sides respectively.
7. A bell-shaped furnace for heat pipe sintering according to claim 1, characterized in that: Fuel tanks (5) are fixedly installed on the top of both sides of the heating cover (11). The top of each of the two fuel tanks (5) is fixedly connected to a preheating pipe (6) extending into the interior of the heating cover (11). The bottom of each of the two fuel tanks (5) is fixedly connected to a conveying pipe (7). The end of each of the two conveying pipes (7) away from the fuel tanks (5) is fixedly connected to the side of each of the two combustion platforms (12) facing each other.