CN2655157Y - Heat pipe - Google Patents

Abstract

The utility model discloses a heat pipe, which is suitable for a heating source and comprises a hollow pipe body with two open ends and an inner chamber, a heat storage seat and a sealing seat which are respectively fixed at the two open ends of the hollow pipe body, a working fluid filled in the inner chamber of the hollow pipe body, and a sealing body arranged in the sealing seat; the heat accumulator includes at least one liquid collecting part formed through the top surface, the working fluid may flow into the liquid collecting part of the heat accumulator and is excited by the temperature of the heat source, and the sealing seat includes one filling port communicated with the inner cavity of the hollow pipe and sealing the filling port.

Description

Heat pipe

technical field

The utility model relates to a heat pipe, in particular to a heat pipe capable of rapidly transmitting temperature.

Background technique

A manufacturing method of an existing heat pipe comprises the following steps:

(A) As shown in Figure 1, first construct a metal hollow tube body 11 with an open end 111 and an inner chamber 113 bounded by a surrounding wall 112, and use a filling machine 12 to fill an appropriate amount of working fluid 13 Inject into the inner chamber 113 of the hollow tube body 11 from the open end 111;

(B) As shown in Figures 1 and 2, after the inner chamber 113 of the hollow pipe body 11 is evacuated, the open end 111 is clamped through a machine to form a basic shape of a heat pipe 1;

(C) As shown in Figures 2 and 3, use a machine tool to cut off the top section 1141 of a flat sealing end 114 (that is, the sealing mouth part) produced by the clamping process, and apply spot welding after cutting (as shown in the figure) The welding spot 14 shown in 4) to achieve sealing airtight effect.

As shown in FIG. 4 , but in practice, the above-mentioned protruding flat sealing end 114 is easily broken by external force and causes the heat pipe 1 to leak, and has an unsightly appearance and the flat sealing end 114 will increase the heat pipe 1. In the case of the length, relatively large placement space is required, and the method of first injecting the working fluid 13 and then vacuumizing it will suck back part of the working fluid 13 that has been injected into the hollow tube body 11, resulting in inability to Quantitatively filling the working fluid 13 and ensuring the uniform quality of the heat pipe 1, coupled with the fact that the existing heat pipe 1 manufacturing process is more complex due to first filling and then vacuuming derivative equipment, has been repeatedly criticized by the industry in practice.

And the most important thing is, because the heat dissipation means of the heat pipe 1 is to use the temperature rise of a heat source 2 (for example, when the integrated circuit is working), to excite the working fluid 13 located in the hollow tube body 11 to make the working fluid 13 The fluid 13 gradually absorbs heat, and after a period of time, the working fluid 13 will be vaporized and converted into a gaseous state (as shown by the rising arrow in FIG. 4 ), and the vaporized working fluid 13 will contact the outside of the hollow tube 11 Air convection conducts heat exchange to achieve condensation, and then converts the gaseous working fluid 13 into a liquid state, thereby achieving a heat-absorbing and heat-dissipating circulation cooling effect.

But in practice, when the working fluid 13 is excited by the temperature rise of the heat source 2, because the straight surrounding wall 112 of the hollow tube 11 can disperse the energy of the working fluid 13 distributed on it, it cannot gather, that is, although Liquids absorb heat faster than solids, but the flat surrounding wall 112 that absorbs heat slowly is first attached to the heat source 2 for heat exchange, and then transferred to the working fluid 13 that absorbs heat quickly for heat exchange, resulting in the excitation of the working fluid The time of 13 is prolonged, and the heat energy cannot be transmitted out quickly, which is the goal that relevant industry players are eager to study and improve.

Utility model content

The purpose of the utility model is to provide a heat pipe with a flat seal, quantitative filling, and concentrated and effective excitation of energy to rapidly transfer temperature.

According to the utility model, the heat pipe is suitable for a heat source, and comprises a hollow pipe body with open ends and an inner chamber, a heat storage seat and a heat storage seat respectively fixed on the two open ends of the hollow pipe body. A sealing seat, a working fluid filled in the inner chamber of the hollow tube body, and a sealing body arranged in the sealing seat; the hollow tube body is a tube body with open ends and includes a bottom open mouth, a top open opening away from the bottom opening and communicating with each other, and an inner chamber defined by the bottom opening, the top opening and a surrounding wall; the heat storage seat is fixed in the hollow The bottom opening of the tube body is pasted on the heating source, and includes at least one liquid collection part formed by indentation from its top surface; the sealing seat is fixed on the top opening of the hollow tube body, and includes A filling port formed from an outer surface of the sealing seat and capable of communicating with the inner chamber of the hollow tubular body; the working fluid is filled in the inner chamber of the hollow tubular body and can flow into the heat storage seat The inside of the liquid collecting part is intensively excited by the temperature of the heating source; the sealing body is filled in the sealing seat and closes the filling port, so that the inner chamber of the hollow tube forms an airtight state.

The advantage of the utility model is that the heat pipe has a flat seal, which is different from the heat pipe made by the existing sealing method, which needs to be clamped and processed, and cuts off the flat seal end (that is, the sealing mouth part) by using a machine tool, which can maintain the flatness of the appearance and is not easy to be damaged. Breaking by external force can reduce the length, improve the practicability of spatial arrangement, and can quantitatively fill the working fluid and process equipment is relatively simple, effectively ensuring the working quality of the heat pipe.

Description of drawings

Fig. 1 is an action diagram of an existing heat pipe sealing method, illustrating that a filling machine is intended to fill a working fluid into a hollow pipe body, and a clamping machine is intended to clamp an opening of the hollow pipe body.

Fig. 2 is an action diagram of the sealing method, illustrating that the clamping tool is clamped on the opening of the hollow tube.

Fig. 3 is an action diagram of the sealing method, illustrating the use of a machine tool to cut off a flat sealing end (ie, the sealing mouth part) produced by the clamping process.

FIG. 4 is an action diagram of the sealing method, illustrating that the flat sealing end of the heat pipe is cut off and spot welded to achieve the sealing effect.

FIG. 5 is an exploded perspective view of the first preferred embodiment of the heat pipe of the present invention.

Fig. 6 is a combined sectional view of the first preferred embodiment.

Fig. 7 is a combined sectional view of the first preferred embodiment, illustrating that after the degassing and filling needle is pulled out of the positioning block, the through hole of the positioning block is strengthened and sealed by instantaneous high-temperature spot welding.

FIG. 8 is a combined cross-sectional view of the second preferred embodiment of the heat pipe of the present invention, illustrating that the sealing machine injects an appropriate amount of glue on the sealing body.

FIG. 9 is a combined cross-sectional view of the second preferred embodiment, illustrating that the jelly is tightly adhered to the sealing body after curing.

Fig. 10 is a combined sectional view of the second preferred embodiment, illustrating that a degassing filling needle is used to puncture the jelly and the sealing body, and extend into the inner chamber of the hollow tube body first with a degassing needle Vacuumize and fill the working fluid with the filling needle. When the degassing and filling needle is pulled out, the pores pierced by the degassing and filling needle can be sealed by the elastic recovery force of the sealing body and the jelly.

FIG. 11 is a combined cross-sectional view of the second preferred embodiment, illustrating that after the degassing filling needle pulls out the jelly, the periphery of the aforementioned pores is strengthened and sealed by instant high-temperature dispensing.

FIG. 12 is an exploded perspective view of the third preferred embodiment of the heat pipe of the present invention.

Fig. 13 is a combined cross-sectional view of the third preferred embodiment, illustrating that the hollow tube body further has a capillary structure formed from the inner surface of the surrounding wall, and the capillary structure is a plurality of longitudinal protrusions formed on the inner surface. strip.

FIG. 14 is an assembled cross-sectional view of the fourth preferred embodiment of the heat pipe of the present invention, illustrating that the capillary structure is a metal mesh fixed on the inner surface of the surrounding wall of the hollow pipe body.

In order to further understand the essence of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Detailed ways

For convenience of description, in the following embodiments, similar components are denoted by the same reference numerals.

As shown in Figures 5 and 6, the first preferred embodiment of the heat pipe 3 of the present utility model is suitable for a heat source 4, and includes a heat storage seat 5 attached to the heat source 4, a Both ends are open and one of the openings is fixed on the metal hollow tube body 6 on the heat storage seat 5, a working fluid 7 filled in the hollow tube body 6, a metal tube solidified in the hollow tube body 6 Another open sealing seat 8 , a sealing body 9 stuffed in the sealing seat 8 , and a positioning block 100 closely attached to the sealing body 9 .

The heat storage seat 5 is made of aluminum, copper metal or alloy metal or other materials with good temperature conduction. A concave arc top surface 51 that is high on the outside and low on the inside, and at least one liquid collecting portion that is recessed from the top surface 51; in this example, the liquid collecting portion of the heat storage seat 5 is formed from the top Surface 51 is vertically recessed to form split grooves 52 , and these split grooves 52 communicate with each other to form a liquid collection groove 53 for the working fluid 7 to collect and flow in.

The hollow tube body 6 is a tube body with both ends open, and includes a bottom opening 61 fixedly sleeved on the heat storage seat 5, and a top opening 62 which is far away from the bottom opening 61 and communicates with each other. , and an inner chamber 64 defined by the bottom opening 61 , the top opening 62 and a surrounding wall 63 .

The working fluid 7 can be pure water, ammonia... etc. fluids with superheated evaporation and cold reduction characteristics; In the sump 53.

The sealing seat 8 is fixedly installed on the top opening 62 of the hollow tubular body 6, and includes an inner cavity formed from an outer surface 81 of the sealing seat 8 and can communicate with the hollow tubular body 6 The filling port 82 of the chamber 64, and a T-shaped engaging hole 83 surrounding the filling port 82 and recessed from the outer surface 81 of the sealing seat 8; the diameter of the engaging hole 83 is reduced from top to bottom.

The sealing body 9 is filled in the engaging hole 83 of the sealing seat 8 and closes the filling port 82 , and in this example, the sealing body 9 is an elastic silicone or rubber.

The positioning block 100 is made to be closely attached to the sealing body 9 by a processing tool, so that the sealing body 9 is more tightly sealed on the filling port 82 of the sealing seat 8, and the outer surface 101 of the positioning block 100 is It is flush with the outer surface 81 of the sealing seat 8 (the flat line L shown in FIG. 6 ) to form a heat pipe 3 with a flat seal; Hole 102.

In practice, the heat pipe 3 of the present utility model uses a degassing and filling needle 110 (including a degassing needle and a filling needle) to penetrate into the sealing body 8 and extend into the inner chamber 64 of the hollow tube body 6 to remove The air needle is vacuumed, and then the filling needle is used to fill the working fluid 7. When the degassing and filling needle 110 is pulled out of the sealing body 8, the elastic recovery force of the sealing body 8 can be used to seal the hole pierced by the degassing and filling needle 110. Pores, and finally the peripheral portion of the aforementioned pores is strengthened and sealed by means of instantaneous high-temperature spot welding (welding spot 120 as shown in FIG. 7 ).

As shown in Figures 5 and 6, in addition, the combination of the heat storage seat 5 and the sealing seat 8 respectively sealed on the two open ends of the hollow tube body 6 is to make the heat storage seat 5 and the sealing seat 8 are pressed tightly on the two open ends of the hollow tube body 6, or the heat storage seat 5 and the sealing seat 8 are directly screwed and combined on the two open ends of the hollow tube body 6, or the heat storage seat 5 and the sealing seat 8 respectively offer a ring groove 54, 84 as shown in Figure 6 and adopt a surrounding mode to fill a hot-melt material 130 (in practice, the strip-shaped hot-melt material 130 ring is located on the ring grooves 54, 84), and then through the heating operation of the vacuum brazing furnace (not shown), the heat storage seat 5 and the sealing seat 8 are fused and tightly bonded to the two open ends of the hollow tube body 6.

During use, when the temperature of the heat-generating source 4 rises (such as when the central processing unit is working), the working fluid 7 in the liquid collection tank 53 of the heat storage seat 5 will be concentrated and excited, and the phase change will occur rapidly ( That is, the liquid working fluid 7 vaporizes to form a gas), which is different from the existing heat pipe 1 as shown in Figure 4 because the energy of the working fluid 13 distributed on it can be dispersed and cannot be gathered because of the straight surrounding wall 112. Compared with the present utility model A good heat transfer effect can be obtained.

In addition, the outer surface 101 of the positioning block 100 of the present invention is flush with the outer surface 81 of the sealing seat 8 to form a heat pipe 3 with a flat seal, which is different from the existing sealing method as shown in Figure 4. The heat pipe 1 needs to be clamped and processed, and the flat sealing end 114 (that is, the mouth sealing part) is cut off by using a machine tool. Compared with the utility model, the appearance flatness can be maintained and it is not easy to be broken by external force, and the length can be reduced to improve the practicality of spatial arrangement. performance, and the quantitative filling of the working fluid 7 and the process equipment are relatively simple, effectively ensuring the working quality of the heat pipe 3 .

As shown in Figure 8, it is the second preferred embodiment of the heat pipe 3 of the present utility model, which is different from the first preferred embodiment in that: the sealing body 9 of the heat pipe 3 is not provided with Positioning block 100, but utilizes a sealing machine tool 140 as shown in Figure 8 to inject jelly in this sealing body 9, after the jelly is cured (Jelly 150 as shown in Figure 9) can be forced Closely adhere to the sealing body 9, so that the sealing body 9 is more tightly sealed to the filling port 82 of the sealing seat 8; finally, use a degassing filling needle 110 as shown in Figure 10 to penetrate into the jelly 150 and the sealing body 9, and extend into the inner chamber 61 of the hollow tube body 6 to first evacuate with a degassing needle, and then fill the working fluid 7 with a filling needle. When the degassing and filling needle 110 is pulled out, borrow The elastic recovery force of the sealing body 9 and the jelly 150 can seal the pores pierced by the degassing filling needle 110, and finally strengthen and seal the outer peripheral portion of the aforementioned pores by instant high-temperature dispensing (as shown in FIG. 11 ). Glue 160).

As shown in Figures 12 and 13, it is the third preferred embodiment of the heat pipe 3 of the present utility model. The top surface 51' is vertically recessed to form a sump 53' for the working fluid 7 to collect and flow in; and the hollow tube body 6 further has a capillary structure formed from the inner surface 631 of the surrounding wall 63. Most of the longitudinal ribs 632 are formed on the inner surface 631 . The capillary structure can not only increase the heat conduction area of the inner diameter, but also promote the heat conduction effect and reduce the heat exchange time.

As shown in Figure 14, the fourth preferred embodiment of the heat pipe 3 of the present utility model is different from the third preferred embodiment in that: the capillary structure is a surrounding wall 63 fixed on the hollow tube body 6 The metal mesh 170 on the inner surface 631 of the .

Claims (15)

1. heat pipe, be applicable on the heat source, a heat storage base and one that comprise the open hollow tube in two ends, is installed in two open ends of this hollow tube respectively seals seat, and is seated in working fluid in this hollow tube, and one be arranged on this and seal the interior seal of seat, it is characterized in that:

This hollow tube is the open bodys in two ends, and comprises a bottom opening port, away from this bottom opening port and the open-top mouth that is interconnected, and an inner cavity chamber that is defined by bottom opening port, open-top mouth and surrounding wall coating;

This heat storage base is to set firmly the bottom opening port of this hollow tube and be arranged on this heat source, and comprises at least one liquid collecting portion that is recessed to form from its end face;

This seals seat, is to be installed on the open-top mouth of this hollow tube, and comprises that one forms and can be communicated with the filling mouth of the inner cavity chamber of this hollow tube on this seals an outer surface of seat;

This working fluid is the inner cavity chamber that is seated in this hollow tube, and can flow into and concentrate the temperature activated that is subjected to this heat source in the liquid collecting portion of this heat storage base;

And the sealing body, be to clog in this seals seat and seal this filling mouth.

2. heat pipe as claimed in claim 1 is characterized in that: more comprise a closely connected locating piece on the sealing body, and make an outer surface of this locating piece concordant with the outer surface that this seals seat.

3. heat pipe as claimed in claim 2 is characterized in that: this seals seat and more comprises one around this filling mouth and this seals the conjugate foramen of the recessed formation of outer surface of seat certainly.

4. heat pipe as claimed in claim 2 is characterized in that: this locating piece itself has an axial perforation.

5. heat pipe as claimed in claim 1 is characterized in that: the end face of this heat storage base is a high outside and low outside concave arc end face.

6. heat pipe as claimed in claim 5 is characterized in that: the liquid collecting portion of this heat storage base is from the vertical collecting tank that is recessed to form of the end face of this heat storage base.

7. heat pipe as claimed in claim 5 is characterized in that: the liquid collecting portion of this heat storage base is the profile groove that the end face from this heat storage base is recessed to form, and these profile grooves are interconnected and form one and compile the collecting tank of inflow for this working fluid.

8. heat pipe as claimed in claim 1 is characterized in that: this hollow tube has a capillary structure that is formed on the inner surface of this surrounding wall.

9. heat pipe as claimed in claim 8 is characterized in that: this capillary structure is most vertical raised lines that are formed on this inner surface.

10. heat pipe as claimed in claim 2 is characterized in that: this hollow tube has a capillary structure that is formed on the inner surface of this surrounding wall.

11. heat pipe as claimed in claim 10 is characterized in that: this capillary structure is most vertical raised lines that are formed on this inner surface.

12. heat pipe as claimed in claim 1 is characterized in that: more comprise a wire netting that is cemented on the inner surface of surrounding wall of this hollow tube.

13. heat pipe as claimed in claim 2 is characterized in that: more comprise a wire netting that is cemented on the inner surface of surrounding wall of this hollow tube.

14. heat pipe as claimed in claim 1 is characterized in that: more comprise and be located at the heat-fusible materials that this seals seat and the cohesive position of this hollow tube.

15. heat pipe as claimed in claim 1 is characterized in that: the heat-fusible materials that more comprises the cohesive position that is located at this heat storage base and this hollow tube.

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