CN201306961Y - Cascaded heat pipe - Google Patents

Abstract

The utility model discloses a heat pipe that can be connected in series, which is composed of a tube shell, a tube core and an end cover, and the tube shell and the end cover are sealed and fixedly connected. Threads are provided on the inner wall of the inner shell, the inner shell and the end cap are closed to form a working chamber, the cross section of the working chamber is circular, and the working chamber is filled with working fluid. The shell of the heat pipe of the utility model is composed of an outer shell and an inner shell. Threads are provided on the inner wall of the inner shell, which realizes the mutual connection of the heat pipes and makes it possible to standardize the length of the heat pipes, thereby simplifying the manufacture and transportation of the heat pipes and reducing the manufacturing cost. and transportation costs; it breaks through the limitation of installation space on the length of a single heat pipe, and broadens the application field of heat pipes.

Description

heat pipes that can be connected in series

technical field

The utility model relates to a heat conduction element, in particular to a series-connectable heat pipe.

Background technique

In daily work and production, heat pipes have been widely used in various occasions as an excellent heat-conducting device, such as solar water heaters, and heating devices such as warm air cabinets.

The heat pipe is a heat transfer element with high thermal conductivity. It transfers heat through the evaporation and condensation of the working fluid in the fully enclosed tube shell. It has extremely high thermal conductivity and good isothermal performance. The thermal area can be changed arbitrarily. The liquid-absorbing core type heat pipe is composed of a tube shell, a liquid-absorbing core and an end cover. The tube wall has a liquid-absorbing core, which is made of capillary porous material. One end of the heat pipe is the evaporating end, and the other end is the condensing end. When the evaporating end of the heat pipe is heated, the liquid in the evaporating end evaporates rapidly. Along the porous material, it flows back to the evaporating end by the action of capillary force, and the cycle is endless. The heat is transferred from one end of the heat pipe to the other end. This cycle is fast, and the heat can be continuously conducted. There is no liquid-absorbing wick in the thermosiphon heat pipe (or gravity heat pipe), and the liquid flows back from the condensation end to the evaporation end under the action of gravity.

The heat pipes commonly used at present generally have a single shell structure, and the cross section of the working cavity in the shell is circular or elliptical. In actual use, it is often encountered that the distance between the cold and heat sources is relatively large. In order to apply in this situation, the length of the heat pipe must be lengthened. Although the length of the heat pipe can be long or short in theory, in practice , the heat pipe is too long not only inconvenient to manufacture and transport, the heat transfer effect will also be reduced, and in some occasions due to the limitation of the installation space, the heat pipe cannot be used.

It can be seen from the above that it is necessary to provide a method to better apply the heat pipe to the heat transfer between the cold and heat sources with a long distance.

Contents of the invention

The purpose of the utility model is to provide a heat pipe that can be connected in series. Through structural improvement, two or more heat pipes can be connected in series to meet the needs of occasions where the distance between cold and heat sources is long.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a heat pipe that can be connected in series, which is composed of a tube shell, a tube core and an end cover. The tube shell and the end cover are sealed and fixedly connected. The inner wall of the inner shell is provided with threads, the inner shell and the end cap are closed to form a working chamber, the cross section of the working chamber is circular, and the working chamber is filled with working fluid.

In the above, the inner wall of the shell or the outer wall of the inner shell are either all smooth or all have a tube core or one is smooth and the other has a tube core.

When in use, when the cold and heat sources are far away, the single heat pipes can be directly connected in series. There are internal threads on the inner wall of the inner shell of the heat pipe. The heat pipes that need to be connected in series are ordinary cylindrical heat pipes. External threads are processed on the outer shell of ordinary heat pipes, that is, two heat pipes can be connected in series by using the thread structure. The heat pipes that need to be connected in series The number of heat pipes can be selected as required. The inner shell and the end cover are closed to form a ring-shaped working chamber, which is filled with working fluid. The inner wall of the shell or the outer wall of the inner shell are either all smooth or all have a tube core or one is smooth and the other has a tube core, and the tube core is made of capillary porous material. One end of the heat pipe is the evaporation end, and the other end is the condensation end. When one end of the heat pipe is heated, the working fluid in the capillary evaporates rapidly, and the steam flows to the other end under a small pressure difference, and releases heat, recondenses into a liquid, and the working fluid re-condenses. Along the porous material, it flows back to the evaporating end by capillary force or gravity, and the cycle is endless. The heat is transferred from one end of the heat pipe to the other end. This cycle is carried out quickly, and the heat can be continuously conducted.

In the above technical solution, fins may be provided on the outer side of the housing. The arrangement of the fin structure increases the heat exchange area, enhances the overall heat transfer performance of the heat pipe, and improves the working efficiency of the heat pipe.

In a further technical solution, the length of the inner shell is not greater than the length of the outer shell, the inner shell is closed at one end inside the outer shell, the inner wall of the inner shell is provided with threads, and the inner wall of the outer shell may be provided with a tube core. The length of the inner shell is not greater than the length of the outer shell. Only part of the working chamber is annular, and the inner wall of the inner shell is provided with threads. Threads are processed on the outer shell of the common heat pipe, which can be directly connected with the threads on the inner wall of the inner shell.

In a further technical solution, the length of the inner shell is not greater than the length of the outer shell, the inner wall of the inner shell is provided with threads, and the end of the outer shell away from the inner shell is also connected with a connecting section, and the cross-sectional area of the connecting section is not larger than the cross-sectional area of the outer shell, so The outer wall of the connecting section is provided with threads. When in use, threads are processed on the outer shell of the ordinary heat pipe, which can be directly connected to the thread on the inner wall of the inner shell, or connected to the thread on the inner wall of the inner shell of another heat pipe through the thread on the outer wall of the connecting section, to meet the needs of different use occasions need.

Due to the use of the above technical solutions, the utility model has the following advantages compared with the prior art:

1. Since the shell of the heat pipe of the present invention is composed of an outer shell and an inner shell, it forms a circular working section, and the inner wall of the inner shell is provided with threads, so that the heat pipes can be connected in series, making it possible to standardize the length of the heat pipes, thereby The manufacturing and transportation of the heat pipe can be simplified, and the manufacturing and transportation costs can be reduced; the limitation of the installation space on the length of a single heat pipe is broken, and the application field of the heat pipe is broadened.

2. The utility model is simple in structure, easy to implement, and low in cost, and is suitable for popularization and use.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model embodiment one;

Accompanying drawing 2 is the sectional view of A-A among Fig. 1;

Accompanying drawing 3 is the use status schematic diagram of the utility model embodiment one;

Accompanying drawing 4 is the structural representation of the utility model embodiment two;

Accompanying drawing 5 is the sectional view of B-B among Fig. 4;

Accompanying drawing 6 is the use state schematic diagram of the utility model embodiment 2;

Accompanying drawing 7 is the structural representation of the utility model embodiment three;

Accompanying drawing 8 is the sectional view of C-C among Fig. 7;

Accompanying drawing 9 is the schematic view of the use state of the third embodiment of the utility model.

Among them: 1. Shell; 2. Inner shell; 3. Tube core; 4. End cap; 5. Working cavity; 6. Fin; 7. Connecting section.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment 1: Referring to accompanying drawings 1 to 3, a heat pipe that can be connected in series is composed of a tube shell, a tube core 3 and an end cap 4, and the tube shell is composed of an outer shell 1 and an inner shell 2. At least one side of the inner wall of the outer shell or the outer wall of the inner shell is provided with a tube core, the inner wall of the inner shell is provided with threads, the inner shell and the end cap are closed to form a working chamber 5, and the cross section of the working chamber is circular. The working cavity is filled with working liquid.

As shown in Figure 3, when in use, screw threads are provided on the outer wall of ordinary heat pipes that need to be connected in series, and through the thread structure, they can be directly connected to the threads on the inner wall of the heat pipe inner shell to complete the mutual connection between the heat pipes. connected heat pipe. The shell surface of the heat pipe is also provided with fins 6, which can improve the efficiency of heat transfer.

Implementation Example 2: Refer to Figure 4 to Figure 6, a heat pipe that can be connected in series. The tube shell is composed of an outer shell 1 and an inner shell 2. Longer than the outer shell, the inner shell is closed at one end inside the outer shell, the inner wall of the inner shell is provided with threads, and the inner wall of the outer shell is provided with a tube core 3 .

As shown in Figure 6, when in use, threads are processed on the outer wall of the common heat pipe, which can be connected with the threads on the inner wall of the heat pipe inner shell to complete the mutual connection of the heat pipes.

Embodiment 3: Referring to accompanying drawings 7 to 9, a heat pipe that can be connected in series, the tube shell is composed of an outer shell 1 and an inner shell 2, the length of the inner shell is not greater than the length of the outer shell, the inner shell Threads are provided on the inner wall, and a connection section 7 is connected to the end of the outer casing away from the inner casing. The cross-sectional area of the connection section is not larger than the area of the outer casing, and the outer wall of the connection section is provided with threads.

As shown in Figure 9, when in use, threads are provided on the outer wall of the ordinary heat pipe, which can be connected with the threads on the inner wall of the heat pipe inner shell to complete the mutual connection of the heat pipes. It is also possible to directly utilize the thread provided on the outer wall of the connecting section to connect with the inner shell inner wall of another heat pipe to complete the mutual serial connection between the heat pipes.

Claims (6)

1. A heat pipe that can be connected in series is made of a tube shell, a tube core (3) and an end cover (4), and the tube shell and the end cover (4) are sealed and fixedly connected, and it is characterized in that: the tube shell is formed by the shell ( 1) and an inner shell (2), the inner wall of the inner shell is provided with threads, the inner shell and the end cap are closed to form a working chamber (5), the section of the working chamber is circular, and the working chamber Filled with working fluid. 2. The series-connectable heat pipe according to claim 1, characterized in that fins (6) are provided at one or both ends of the outer shell. 3. The heat pipe that can be connected in series according to claim 1, characterized in that: the length of the inner shell is not greater than the length of the outer shell, the inner shell is closed at one end inside the outer shell, and the inner wall of the inner shell is provided with threads, the A pipe core is arranged on the inner wall of the shell. 4. The heat pipe that can be connected in series according to claim 1, characterized in that: the length of the inner shell is not greater than the length of the outer shell, the inner wall of the inner shell is provided with threads, and the end of the outer shell far away from the inner shell is also connected with a connecting section (7), the cross-sectional area of the connecting section is not larger than the cross-sectional area of the casing, and the outer wall of the connecting section is provided with threads. 5. The heat pipe that can be connected in series according to claim 1, characterized in that: the length of the inner shell is not greater than the length of the outer shell, the inner wall of the inner shell is provided with threads, and the end of the outer shell far away from the inner shell is also connected with a connecting section (7), the cross-sectional area of the connecting section is not larger than the cross-sectional area of the shell, and the outer wall of the connecting section is provided with fins (6). 6 . The series-connectable heat pipe according to claim 4 and claim 5 , wherein the transition between the connecting section and the outer shell is arc-shaped, and the end of the inner shell close to the connecting section is semi-ellipsoidal.

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