A heat pipe

Abstract

The invention discloses a heat pipe, comprising: a pipe body, a refrigerant sleeve is sleeved on the upper part of the pipe body, the upper and lower ends of the refrigerant sleeve are sealed with the outer wall of the pipe body, so that a refrigerant chamber is formed between the refrigerant sleeve and the pipe body, a refrigerant inlet and a refrigerant outlet communicating with the refrigerant chamber are respectively arranged on the outer wall of the refrigerant sleeve, a spiral toothed fin is installed on the lower outer wall of the pipe body along its length direction, a sealing plug for blocking the lower pipe opening of the pipe body is arranged at the lower end of the pipe body, and a filling and emptying plug capable of opening or blocking the upper pipe opening of the pipe body is arranged at the upper end of the pipe body. The invention has the advantages of high heat exchange efficiency and convenient processing and manufacturing.

Description

Technical Field

[0001] The invention relates to the technical field of heat pipe heat exchange equipment, and in particular to a heat pipe. Background Art

[0002] A heat pipe is a heat transfer element that uses the continuous phase change evaporation and condensation of the working fluid inside a fully enclosed vacuum tube to complete the continuous transfer of heat. Its thermal conductivity exceeds that of any known metal. The structure of the heat pipe currently used includes: a tube body, a sealing plug for sealing the lower tube opening of the tube body is arranged at the lower end of the tube body, and a filling and emptying head that can open or seal the upper tube opening of the tube body is arranged at the upper end of the tube body. The filling and emptying head is composed of a head circular plate with a center hole and a filling and emptying pipe arranged at the center hole of the head circular plate.

[0003] The manufacturing process of the above-mentioned heat pipe is as follows: first, the filling and emptying pipe and the head circular plate are assembled and welded to form a filling and emptying head, and then the sealing plug is sealed and welded to the lower pipe opening of the heat pipe body by argon arc welding, so that the sealing plug seals the lower pipe opening of the heat pipe body, and then the head circular plate of the filling and emptying head is sealed and welded to the upper pipe opening of the heat pipe body by argon arc welding, and then the working medium is filled into the heat pipe body through the filling and emptying pipe of the filling and emptying head and vacuum is drawn. After the filling and vacuuming are completed, the filling and emptying pipe is welded and sealed to complete the sealing of the upper pipe opening of the heat pipe body, thereby completing the manufacture of the heat pipe.

[0004] The structure of the heat pipe heat exchanger using the above heat pipe composition needs to include: a refrigerant box, a heat medium box, and a plurality of heat pipes, the upper part of the heat pipe is located in the refrigerant box, and the lower part of the heat pipe is located in the heat medium box. During operation, the heat medium in the heat medium box will exchange heat with the lower evaporation section of each heat pipe. The working fluid in the lower evaporation section of each heat pipe will boil or evaporate after being heated, and change from liquid to steam. Under the action of a small pressure difference in the heat pipe, the generated steam will flow upward to the upper condensation section of the heat pipe located in the refrigerant box, and exchange heat with the refrigerant in the refrigerant box through the tube wall of the upper condensation section of the heat pipe. The temperature of the refrigerant becomes higher after the heat exchange, and the steam in the upper condensation section of the heat pipe will be re-condensed into liquid after the heat exchange, and will flow downward to the lower evaporation section of the heat pipe under the action of gravity, and will exchange heat and evaporate with the heat medium in the heat medium box again, completing a cycle. Through the continuous repeated evaporation and condensation process of the working fluid in the heat pipe, the heat transfer and exchange between the heat medium in the heat medium box and the refrigerant in the refrigerant box is realized.

[0005] The above-mentioned heat pipe has the following disadvantages: (1) poor heat exchange efficiency; (2) when the refrigerant box of the heat pipe heat exchanger fails, the heat pipe heat exchanger needs to be shut down and can only be restarted after the refrigerant box is repaired, which affects work efficiency; (3) during the heat pipe manufacturing process, the filling and emptying pipe of the filling and emptying head must be welded and sealed to seal the upper pipe opening of the heat pipe, resulting in high labor intensity and low work efficiency for workers, making the heat pipe processing and manufacturing extremely inconvenient. Summary of the invention

[0006] The object of the present invention is to provide a heat pipe which has high heat exchange efficiency and is easy to manufacture.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a heat pipe, comprising: a tube body, a refrigerant sleeve is sleeved on the upper part of the tube body, the upper and lower ends of the refrigerant sleeve are sealed with the outer wall of the tube body, so that a refrigerant chamber is formed between the refrigerant sleeve and the tube body, a refrigerant inlet and a refrigerant outlet connected to the refrigerant chamber are respectively arranged on the outer wall of the refrigerant sleeve, spiral toothed fins are installed on the lower outer wall of the tube body along its length direction, a sealing plug for sealing the lower pipe opening of the tube body is arranged at the lower end of the tube body, and a filling and emptying head capable of opening or sealing the upper pipe opening of the tube body is arranged at the upper end of the tube body.

[0008] Furthermore, in the aforementioned heat pipe, the structure of the filling emptying head comprises: a cap and a head, the lower end of the head is inserted into and fixed to the upper pipe opening of the heat pipe body, the upper end of the head protrudes upward from the upper pipe opening of the heat pipe body and is provided with an external thread, an internal threaded blind hole for threading with the external thread of the head is provided on the lower surface of the cap, the cap is threadedly connected to the external thread of the head through the internal threaded blind hole, and when the cap is threadedly connected to the head, the wall of the internal threaded blind hole of the cap and the upper end surface of the head together form an empty A cavity is provided in the sealing head, a filling discharge channel which connects the cavity with the inside of the heat pipe body is provided, a channel opening whose diameter is larger than that of the filling discharge channel is provided in the cavity and a steel ball is placed on the channel opening, an elastic member is provided between the top of the steel ball and the top wall of the internal threaded blind hole of the cap, and an exhaust through hole which communicates with the cavity and faces the steel ball is provided on the outer wall of the cap; when the cap is rotated to move downward relative to the sealing head, the cap can press the steel ball downward through the elastic member, so that the steel ball presses down and blocks the channel opening of the filling discharge channel.

[0009] Furthermore, in the aforementioned heat pipe, a circle of sealing strip is arranged along the edge of the channel opening of the filling emptying channel. When the cap is rotated to move downward relative to the head, the cap can press the steel ball downward through the elastic member, so that the steel ball presses the sealing strip downward to seal the channel opening of the filling emptying channel.

[0010] Furthermore, in the aforementioned heat pipe, an elastic member positioning hole for positioning and installing the elastic member is provided on the top wall of the internal threaded blind hole of the cap.

[0011] Furthermore, in the aforementioned heat pipe, the elastic member is a spring positioned and installed in a positioning hole of the elastic member.

[0012] Furthermore, in the aforementioned heat pipe, a steel ball positioning hole for positioning and installing a steel ball is provided on the upper end surface of the head at the channel opening of the filling and emptying channel.

[0013] Furthermore, in the aforementioned heat pipe, the outer periphery of the cap is a polygon that is easy to fit with a wrench.

[0014] Furthermore, in the aforementioned heat pipe, the lower end portion of the sealing head fixedly mounted on the heat pipe orifice is reduced in diameter to form a stepped shape for easy insertion into the heat pipe orifice.

[0015] Furthermore, in the aforementioned heat pipe, the exhaust hole of the cap faces the upper part of the steel ball.

[0016] Furthermore, in the aforementioned heat pipe, a protective sleeve is sleeved on the outside of the pipe body below the refrigerant sleeve and close to the refrigerant sleeve.

[0017] Through the implementation of the above technical solution, the beneficial effects of the present invention are: (1) by arranging spiral toothed fins on the outside of the heat pipe, the heat exchange efficiency is greatly improved; (2) by arranging a refrigerant sleeve on the outside of the heat pipe body, the heat pipe is provided with a refrigerant chamber for refrigerant flow and heat exchange, and no refrigerant box is required when installing the heat pipe heat exchanger. When the refrigerant chamber of a heat pipe fails, the heat pipe heat exchanger does not need to be shut down, and only the damaged heat pipe needs to be replaced online, thereby improving work efficiency; (3) by simply turning the cover upwards, The cap is rotated to make the elastic part loosen the steel ball, so that the working fluid can be filled into the heat pipe through the exhaust hole of the cap, the cavity formed by the cap and the head, and the filling and exhausting channel of the head; after the working fluid is filled, the cap only needs to be rotated again to move the cap downward relative to the head, so that the cap presses the steel ball downward through the elastic part, so that the steel ball presses down and blocks the channel opening of the filling and exhausting channel, so as to complete the sealing of the upper pipe opening of the heat pipe. The operation is very convenient, which reduces the labor intensity of workers and improves the processing and manufacturing efficiency of the heat pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a heat pipe according to the present invention.

[0019] Figure 2 for Figure 1 An enlarged schematic diagram of the H site shown in FIG.

[0020] Figure 3 for Figure 1 An enlarged schematic diagram of the F site shown in FIG.

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the AA section shown in FIG.

[0022] Figure 5 for Figure 1 The structural schematic diagram of the filling emptying head is shown in FIG.

[0023] Figure 6 for Figure 5 Schematic diagram of the structure of the head shown in .

[0024] Figure 7 for Figure 5 Schematic diagram of the structure of the cap shown in FIG. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the heat pipe comprises: a tube body 101, a refrigerant sleeve 102 is sleeved on the upper part of the tube body 101, and the upper and lower ends of the refrigerant sleeve 102 are sealed with the outer wall of the tube body 101, so that a refrigerant chamber 103 is formed between the refrigerant sleeve 102 and the tube body 101, a refrigerant outlet 104 connected to the refrigerant chamber 103 is arranged on the upper part of the outer wall of the refrigerant sleeve 102, a refrigerant inlet 105 connected to the refrigerant chamber 103 is arranged on the lower part of the outer wall of the refrigerant sleeve 102, and a refrigerant pipe 106 connected to the refrigerant chamber 103 is provided. A spiral toothed fin 106 is installed along the length direction of the upper portion, a sealing plug 107 for sealing the lower pipe opening of the pipe body 101 is provided at the lower end of the pipe body 101, and a filling and emptying plug 108 for opening or sealing the upper pipe opening of the pipe body 101 is provided at the upper end of the pipe body 101; a protective sleeve 109 is sleeved on the outside of the pipe body 101 below and close to the refrigerant sleeve 102. By installing the protective sleeve on the outside of the heat pipe at the separation of the cold and hot media, the heat pipe can be better protected and the service life of the heat pipe can be extended;

[0027] In this embodiment, if Figure 5 , Figure 6 , Figure 7As shown, the structure of the filling and emptying head includes: a cap 1 and a head 2, the lower end of the head 2 is fixedly installed on the upper pipe opening of the heat pipe body 101, the upper end of the head 2 protrudes upward from the upper pipe opening of the heat pipe body 101 and is provided with an external thread 21, an internal thread blind hole 11 for threaded connection with the external thread of the head 2 is provided on the lower surface of the cap 1, the cap 1 is threadedly connected to the external thread 21 of the head 2 through the internal thread blind hole 11, and when the cap 1 is threadedly connected with the head 2, the hole wall of the internal thread blind hole 11 of the cap 1 and the upper end surface 22 of the head 2 form a cavity 3 together, and a cavity 3 is provided in the head 2 when the head 2 is installed on the heat pipe The pipe opening can connect the cavity 3 with the interior of the heat pipe body 101 to form a filling discharge channel 23, a channel opening 231 with a diameter larger than that of the filling discharge channel 23 is provided in the cavity 3 and a steel ball 4 is placed on the channel opening 231, an elastic member 5 is provided between the top of the steel ball 4 and the top wall of the internal threaded blind hole 11 of the cap 1, and an exhaust through hole 13 communicating with the cavity 3 and facing the upper part of the steel ball 4 is provided on the outer wall of the cap 1. When the cap 1 is rotated to move downward relative to the end cap 2, the cap 1 can press the steel ball 4 downward through the elastic member 5, so that the steel ball 4 presses down and blocks the channel opening 231 of the filling discharge channel 23;

[0028] In the present embodiment, a circle of sealing strip 6 is arranged along the edge of the channel opening 231 of the filling emptying channel 23. When the cap 1 is rotated to move downward relative to the end cap 2, the cap 1 can press the steel ball 4 downward through the elastic member 5, so that the steel ball 4 presses the sealing strip 6 downward to block the channel opening 231 of the filling emptying channel 23. In this way, the blocking effect of the channel opening of the filling emptying channel is better, and the use stability and safety of the heat pipe are improved. In the present embodiment, an elastic member positioning hole 12 for positioning and installing the elastic member 5 is arranged on the top wall of the internal threaded blind hole 11 of the cap 1, so that the elastic member can be assembled more conveniently and accurately, thereby improving the assembly efficiency. In the present embodiment, In the example, the elastic member 5 is a spring positioned and installed in the elastic member positioning hole 12. The cost of this elastic member is relatively low, which reduces the cost of use for enterprises. In this embodiment, a steel ball positioning hole 24 for positioning and installing a steel ball 4 is provided on the upper end surface 22 of the head at the channel opening 231 of the filling and emptying channel 23. In this embodiment, the outer periphery of the cap 1 is a polygon that is convenient for cooperation with a wrench, so that the cap can be operated more conveniently and the assembly efficiency is improved. In this embodiment, the lower end of the head 2 fixedly installed on the heat pipe nozzle is reduced in diameter to form a stepped shape that is convenient for inserting into the heat pipe nozzle, so that the head 2 can be installed on the heat pipe nozzle more conveniently and accurately, further improving the assembly efficiency.

[0029] When manufacturing the heat pipe, the sealing plug 107 is first welded to the lower pipe opening of the heat pipe body 101 by argon arc welding, so that the sealing plug 107 seals the lower pipe opening of the heat pipe body 101, and then the head 2 of the filling and emptying head 108 is welded to the upper pipe opening of the heat pipe body 101 by argon arc welding, and then the cap 1 is rotated upward to release the steel ball 4 by the spring, and then the working medium is filled into the cavity 3 from the exhaust hole 13 of the cap 1, and the working medium filled into the cavity 3 will push the steel ball 4 away to make the steel ball 4 open the filling and emptying channel 23 The channel opening 231 of the filling and emptying channel 23 is formed, and the working fluid in the cavity 3 is filled into the heat pipe body 101 through the filling and emptying channel 23. After the working fluid is filled, the cap 1 is rotated downward to move the cap 1 downward relative to the head 2, so that the cap 1 presses the steel ball 4 downward through the spring, so that the steel ball 4 presses the sealing strip 6 downward to block the channel opening 231 of the filling and emptying channel 23, thereby completing the sealing of the upper pipe opening of the heat pipe body 101. The operation is very convenient, the labor intensity of workers is reduced, and the processing and manufacturing efficiency of the heat pipe is improved.

[0030] The advantages of the present invention are as follows: (1) by arranging spiral toothed fins on the outside of the heat pipe, the heat exchange efficiency is greatly improved; (2) by arranging a refrigerant sleeve on the outside of the heat pipe body, the heat pipe is provided with a refrigerant chamber for refrigerant flow and heat exchange, and no additional refrigerant box is required when installing the heat pipe heat exchanger. When the refrigerant chamber of a heat pipe fails, the heat pipe heat exchanger does not need to be shut down, and only the damaged heat pipe needs to be replaced online, thereby improving the working efficiency; (3) by simply turning the cap upward to release the steel ball from the elastic member, the working medium can be filled into the heat pipe through the exhaust hole of the cap, the cavity formed by the cap and the end cap, and the filling and emptying channel of the end cap; after the filling of the working medium is completed, the cap can be rotated again to move the cap downward relative to the end cap, so that the cap presses the steel ball downward through the elastic member, so that the steel ball presses down and blocks the channel opening of the filling and emptying channel, thereby completing the sealing of the upper pipe opening of the heat pipe, which is very convenient to operate, reduces the labor intensity of workers, and improves the processing and manufacturing efficiency of the heat pipe.

[0031] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any modification or equivalent change made based on the technical essence of the present invention still falls within the scope of protection required by the present invention.

Claims

1. A heat pipe comprising: The tube body is characterized in that: a refrigerant sleeve is sleeved on the upper part of the tube body, and the upper and lower ends of the refrigerant sleeve are sealed with the outer wall of the tube body, so that a refrigerant chamber is formed between the refrigerant sleeve and the tube body, and a refrigerant inlet and a refrigerant outlet connected to the refrigerant chamber are respectively arranged on the outer wall of the refrigerant sleeve, and spiral toothed fins are installed on the lower outer wall of the tube body along its length direction, a sealing plug for sealing the lower pipe opening of the tube body is arranged at the lower end of the tube body, and a filling and emptying head capable of opening or sealing the upper pipe opening of the tube body is arranged at the upper end of the tube body; The structure of the filling and emptying end cap comprises: a cap and an end cap, wherein the lower end of the end cap is inserted into and fixed to the upper pipe opening of the heat pipe body, the upper end of the end cap protrudes upward from the upper pipe opening of the heat pipe body and is provided with an external thread, an internal thread blind hole for threadingly connecting with the external thread of the end cap is provided on the lower surface of the cap, the cap is threadedly connected to the external thread of the end cap through the internal thread blind hole, and when the cap is threadedly connected with the end cap, the wall of the internal thread blind hole of the cap and the upper end face of the end cap jointly form a cavity, a filling and emptying channel for connecting the cavity with the inside of the heat pipe body is provided in the end cap, and a filling and emptying channel for connecting the cavity with the inside of the heat pipe body is provided in the cavity A steel ball having a channel opening whose diameter is larger than that of the filling emptying channel and resting on the channel opening is provided inside, an elastic member is provided between the top of the steel ball and the top wall of the internal threaded blind hole of the cap, an exhaust through hole communicating with the cavity and facing the steel ball is provided on the outer wall of the cap, and the exhaust through hole of the cap faces the upper part of the steel ball; when the cap is rotated to move downward relative to the sealing head, the cap can press the steel ball downward through the elastic member, so that the steel ball presses down and blocks the channel opening of the filling emptying channel; the lower end portion of the sealing head fixedly installed on the pipe opening of the heat pipe is reduced in diameter to form a stepped shape for easy insertion into the pipe opening of the heat pipe.

2. A heat pipe according to claim 1, characterized in that: A sealing strip is arranged along the edge of the passage opening of the filling emptying passage. When the cap is rotated to move downward relative to the sealing head, the cap can press the steel ball downward through the elastic member, so that the steel ball presses the sealing strip downward to seal the passage opening of the filling emptying passage.

3. A heat pipe according to claim 2, characterized in that: An elastic member positioning hole for positioning and installing the elastic member is arranged on the top wall of the internal thread blind hole of the cap.

4. A heat pipe according to claim 3, characterized in that: The elastic member is a spring positioned and installed in the positioning hole of the elastic member.

5. A heat pipe according to claim 4, characterized in that: A steel ball positioning hole for positioning and installing a steel ball is arranged on the upper end surface of the head at the channel opening of the filling and emptying channel.

6. A heat pipe according to claim 5, characterized in that: The outer periphery of the cover cap is a polygon for easy matching with a wrench.

7. The heat pipe according to claim 1, characterized in that: A protective sleeve is sleeved on the outside of the pipe body below the refrigerant sleeve and close to the refrigerant sleeve.

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