CN207969251U - Finned heat pipe coupling radiator - Google Patents

Abstract

The utility model relates to the technical field of high-efficiency heat transfer and heat dissipation, in particular to a finned heat pipe coupled radiator, comprising a square hollow bottom shell plate with an open top, a cover plate arranged at the opening of the bottom shell plate, and a shell-type Fins, the shell-type fins are hollow square structures with an open bottom, the shell-type fins are arranged above the cover plate through hole of the cover plate, and the inner wall cross-sectional shape of the shell-type fins is consistent with that of the cover The cross-sectional shape of the through hole of the plate matches; a number of sheet-shaped liquid-absorbing cores are fixed at intervals in the shell-type fins, and the sheet-shaped liquid-absorbing cores are connected with the liquid-absorbing cores fixed on the inner wall of the bottom shell plate. The utility model not only has the structural advantage of the finned radiator, but also has the advantage of high-efficiency heat transfer of the heat pipe technology; due to the full use of the heat transfer ability of the heat pipe phase change, the heat transfer inside the heat pipe coupling radiator is extremely fast, resulting in The heat is quickly distributed to the entire radiator, so the new radiator can cool the heat generating unit well.

Description

Finned heat pipe coupled radiator

technical field

The utility model relates to the technical field of high-efficiency heat transfer and heat dissipation, in particular to a finned heat pipe coupled radiator.

Background technique

As various energy-consuming devices become more and more integrated, the heat flux generated by the devices is also gradually increasing. Therefore, if the heat is not dissipated in time, it will inevitably cause the device to heat up sharply, which will reduce the service life of the device, and even cause direct damage. However, heat sinks made of metals such as solid copper or aluminum are increasingly unable to meet high-intensity heat dissipation requirements due to their inherent limitations in heat dissipation and heat transfer capabilities. There is an urgent need to develop new high-efficiency heat dissipation design techniques to cool the device's temperature to a reasonable range.

A heat pipe is a device that uses liquid phase change to efficiently transfer heat. It has the advantages of high heat transfer efficiency and small thermal resistance. The heat transfer performance of the heat pipe is one or more orders of magnitude higher than that of traditional metal heat transfer devices. Therefore, it is very important to make full use of the heat pipe technology and optimize the design of the heat pipe.

Usually, the heat pipe realizes the vapor-liquid circulation through a pipe, which is often limited by the external heat exchange area, resulting in the inability to dissipate heat in time. The three heat pipe technologies that have developed rapidly in recent years include pulsating heat pipe (PHP), loop heat pipe (LHP) and loop heat pipe with liquid wick (CPL). The heat can be dissipated only by partially adding fins or forced heat dissipation devices, but the heat transfer performance will not be greatly improved if the height of the fins reaches a certain level.

Just based on the above considerations, the utility model designs a finned heat pipe coupling radiator.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the existing technology, to meet the actual needs, to provide a finned heat pipe coupled radiator, using the principle of the cored heat pipe to carry out a new design on the inside of the original finned radiator, the evaporation part absorbs The steam generated by the heat enters the cyclic pulsation condensation of the channels between the sheet-shaped liquid-absorbing cores inside the fins to release latent heat, and the fins can achieve good isothermal performance, which greatly improves the heat dissipation effect of the finned heat pipe coupling radiator.

In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is:

The utility model discloses a finned heat pipe coupling radiator, which comprises a square hollow bottom shell plate with an open top, a cover plate arranged at the opening of the bottom shell plate, and shell fins. The sheet is a hollow square structure with an open bottom, and the shell-type fins are arranged above the through-hole of the cover plate, and the cross-sectional shape of the inner wall of the shell-type fin matches the cross-sectional shape of the through-hole of the cover plate ; There are several sheet-like liquid-absorbing cores fixed at intervals in the shell-type fins, and the sheet-like liquid-absorbing cores are connected with the liquid-absorbing cores fixed on the inner wall of the bottom shell plate.

The through holes of the cover plate are formed at equal intervals on the cover plate.

The sheet-shaped liquid-absorbing core includes a first sheet-shaped liquid-absorbing core and a second sheet-shaped liquid-absorbing core. One end of the first sheet-shaped liquid-absorbing core is inserted into the through hole of the cover plate to connect with the top of the liquid-absorbing core, and the other end is connected to the top of the liquid-absorbing core. The top of the inner cavity of the shell-type fin is connected; one end of the second sheet-shaped liquid-absorbing core is inserted into the through hole of the cover plate to connect with the top of the liquid-absorbing core, and the other end is provided with a gap with the top of the inner cavity of the shell-type fin. The sheet-shaped liquid-absorbing cores and the first sheet-shaped liquid-absorbing cores are interlaced and fixed on the inner wall of the shell fins at equal intervals; a steam channel is formed between the first and second sheet-shaped liquid-absorbing cores.

The bottom of the inner wall of the bottom shell is provided with several ribs in an array, the extension lines of the ribs are perpendicular to the extension lines of the through holes of the cover plate, and the length of the ribs is the same as that of the inner wall of the bottom shell. The lengths are equal; the ribs are arranged directly under the sheet-shaped liquid-absorbent core.

The middle part of one side wall of the bottom shell plate is provided with a vacuum port, and the middle part of the other side wall is provided with a working fluid injection port. The vacuum port is coaxial with the working medium injection port. The axis of the inlet is parallel to the fins.

The bottom shell, ribs, cover and shell fins are made of stainless steel, aluminum alloy or copper.

The liquid-absorbing core and sheet-shaped liquid-absorbing core are made of copper wire mesh provided with fine copper powder and filamentary nickel powder.

The beneficial effects of the utility model are:

1. The utility model not only has the structural advantages of finned radiators, but also has the advantages of efficient heat transfer of heat pipe technology;

2. The utility model makes full use of the heat transfer capability of the heat pipe phase change, so that the heat transfer inside the heat pipe coupling radiator is extremely fast, and the heat generated is quickly distributed to the entire radiator, so the new radiator can be well used for production. thermal unit for cooling;

3. The utility model makes the condensed liquid quickly flow back to the evaporation part through the sheet-like liquid-absorbing core on the shell-type fins, and the channel between the sheet-like liquid-absorbing cores on the fins enables the steam generated at the evaporation part to flow in the steam channel and in the fin. The evaporation part circulates flow and condensation.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the sectional view of the utility model;

Fig. 3 is the top view of the cover plate in the utility model;

Fig. 4 is a perspective view of the bottom shell plate in the utility model.

In the figure, 1 bottom shell plate, 2 cover plate, 3 shell fins, 4 sheet liquid-absorbing core, 5 steam channel, 6 fins, 7 cover plate through hole, 8 working medium injection port, 9 vacuum pumping port, 10 wicks.

Detailed ways

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

See Figures 1-4.

The utility model discloses a finned heat pipe coupled radiator, which comprises a square hollow bottom shell plate 1 with an open top, a cover plate 2 arranged at the opening of the bottom shell plate 1, and shell fins 3. The shell-type fin 3 is a hollow square structure with an open bottom, and the shell-type fin 3 is arranged above the cover plate through hole 7 of the cover plate 1, and the cross-sectional shape of the inner wall of the shell-type fin 3 is the same as that The cross-sectional shape of the through hole 7 of the cover plate matches; the shell fins 3 are fixed with a number of sheet-like liquid-absorbing cores 4 at intervals, and the sheet-like liquid-absorbing cores 4 are connected with the liquid-absorbing cores fixed on the inner wall of the bottom shell plate 1 The cores 10 are connected, and the cover plate through holes 7 are formed on the cover plate 2 at equal intervals. In this case, the evaporation part of the radiator is formed by the bottom shell plate 1 and the liquid-absorbing core 10, and the bottom shell plate 1 absorbs the heat of the heat generating unit. , the working medium in the vacuum environment is heated and evaporated, and the condensation part is formed by the shell fins 3 and the sheet-shaped liquid-absorbent core 4, and the vaporized working medium vapor will rise to the steam channel between the sheet-shaped liquid-absorbent cores 4 5, and cyclically pulsates under the pressure difference of two adjacent steam channels 5, and releases the latent heat of vaporization to condense and liquefy. It flows back to the liquid-absorbing core 10 of the bottom shell plate 1 of the evaporation part to complete a working cycle; it not only has the structural advantages of finned radiators, but also has the advantages of efficient heat transfer of heat pipe technology; fully utilizes the heat pipe phase change heat transfer The thermal capacity makes the heat transfer in the heat pipe coupling radiator extremely fast, and the heat generated is quickly distributed to the entire radiator, so the new radiator can cool the heat generating unit well; through the fins on the shell fins The liquid-absorbing core makes the condensed liquid return to the evaporating part quickly, and the channels between the sheet-shaped liquid-absorbing cores on the fins allow the steam generated by the evaporating part to circulate and condense in the steam channel and the evaporating part in the fin.

Working process: First, the air inside the radiator is drawn out through the vacuum port 9 to form a vacuum environment, and then a certain amount of working fluid is injected into the bottom shell plate 1 through the working medium injection port 8, and the bottom plate shell plate 1 absorbs the heat of the heat generating unit , the working fluid in the vacuum environment is heated and evaporated, and the vaporized working fluid will rise to the steam channel 5 between the sheet-shaped liquid-absorbing cores 4, and the pressure difference between the two adjacent steam channels 5 The lower cycle pulses, and releases the latent heat of vaporization to condense and liquefy. The liquefied working medium is absorbed by the sheet-shaped liquid-absorbent cores 4 on both sides, and returns to the liquid-absorbent core 10 of the bottom shell plate 1 of the evaporation part under the action of capillary force. a work cycle.

The sheet-shaped liquid-absorbent core 4 includes a first sheet-shaped liquid-absorbent core 41 and a second sheet-shaped liquid-absorbent core 42, and one end of the first sheet-shaped liquid-absorbent core 41 is inserted into the cover plate through hole 7 and the liquid-absorbent core 10 The top is connected, and the other end is connected with the top of the inner cavity of the shell fin 3; one end of the second sheet liquid-absorbing core 42 is inserted into the cover plate through hole 7 and connected with the top of the liquid-absorbing core 10, and the other end is connected with the shell fin 3 There is a gap at the top of the inner cavity, and the second sheet-shaped liquid-absorbing core 42 and the first sheet-shaped liquid-absorbing core 41 are fixed on the inner wall of the shell fin 3 at equal intervals; Steam channels 5 are formed between the liquid-absorbing cores, and the steam circulates and pulses in the steam channels 5 to enhance the heat exchange effect.

The bottom of the inner wall of the bottom shell 1 is provided with a plurality of ribs 6 in an array, the extension lines of the ribs 6 and the extension lines of the cover plate through holes 7 are perpendicular to each other, and the length of the ribs 6 is the same as the length of the cover plate. The lengths of the inner walls of the bottom shell 1 are equal;

The middle part of one side wall of the bottom shell plate 1 is provided with a vacuum port 9, and the middle part of the other side wall is provided with a working fluid injection port 8. The vacuum pumping port 9 is coaxial with the working medium injection port 8, and the vacuum pumping port The axes of the opening 9 and the working medium injection port 8 are parallel to the fins 6, and the air inside the radiator is drawn out through the vacuuming port 9 to form a vacuum environment, and a certain amount of working medium is injected into the bottom shell through the working medium injection port 8 In 1, it is preferable to choose a working fluid with large specific heat capacity, low viscosity and large latent heat of vaporization. The working fluid should have good compatibility with the material used in the radiator and the material of the liquid-absorbing core; the liquid filling rate of the working fluid is 20%- 40%, the working fluid filling rate depends on the working fluid used and the inclination angle of the radiator.

The bottom shell 1, the ribs 6, the cover 2 and the shell fins 3 are made of stainless steel, aluminum alloy or copper, and the cover 2 is connected to the bottom shell 1 and the shell fins by welding , and sealed with a high-temperature sealant to ensure that it forms a closed heat dissipation system.

The liquid-absorbing core 10 and the sheet-like liquid-absorbing core 4 are made of copper wire mesh provided with fine copper powder and filamentous nickel powder, which enhances capillary force and makes the liquefied working fluid return to the bottom shell of the evaporation part faster Inside the liquid absorbent core 10 of the body 1.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent transformations made by using the specification of the utility model and the contents of the accompanying drawings or directly or indirectly used in related technical fields are all the same. Included in the patent protection scope of the present utility model.

Claims (7)

1. a kind of finned heat pipe coupling radiator, it is characterised in that：Include the bottom coverboard for the hollow tip opening being square （1）, be set to the bottom coverboard（1）The cover board of opening（2）And shell-type fin（3）, the shell-type fin（3）In bottom The hollow square structure of opening, the shell-type fin（3）It is set to the cover board（2）Cover plate through hole（7）Top, the shell-type Fin（3）Inner wall section shape and the cover plate through hole（7）Cross sectional shape match；The shell-type fin（3）Interior interval It is fixed with several sheet liquid-sucking cores（4）, the sheet liquid-sucking core（4）Be fixed on bottom coverboard（1）Liquid-sucking core on inner wall （10）It is connected.

2. finned heat pipe coupling radiator according to claim 1, it is characterised in that：The cover plate through hole（7）Deng between Every being formed in the cover board（2）On.

3. finned heat pipe coupling radiator according to claim 2, it is characterised in that：The sheet liquid-sucking core（4）Packet Include the first sheet liquid-sucking core（41）, the second sheet liquid-sucking core（42）, the first sheet liquid-sucking core（41）One end be inserted into cover board Through-hole（7）With liquid-sucking core（10）Top connects, the other end and shell-type fin（3）Inner cavity top is connected；The second sheet imbibition Core（42）One end be inserted into cover plate through hole（7）With liquid-sucking core（10）Top connects, the other end and shell-type fin（3）Inner cavity top is set There are gap, the second sheet liquid-sucking core（42）With the first sheet liquid-sucking core（41）Staggeredly it is fixed on the shell-type fin at equal intervals （3）On inner wall；Steam channel is formed between the first, second sheet liquid-sucking core（5）.

4. finned heat pipe coupling radiator according to claim 3, it is characterised in that：The bottom coverboard（1）It is interior Array is provided with several fins on wall bottom（6）, the fin（6）Extended line and the cover plate through hole（7）Extended line It is mutually perpendicular to, the fin（6）Length and the bottom coverboard（1）Inner wall equal length；The fin（6）It is set to described Sheet liquid-sucking core（4）Underface.

5. finned heat pipe coupling radiator according to claim 4, it is characterised in that：The bottom coverboard（1）One Vacuum orifice is equipped in the middle part of side wall（9）, another side wall middle part is equipped with working medium inlet（8）, the vacuum orifice（9）It is noted with working medium Entrance（8）Coaxially, the vacuum orifice（9）With working medium inlet（8）Axis and the fin（6）It is parallel.

6. finned heat pipe coupling radiator according to claim 5, it is characterised in that：The bottom coverboard（1）, fin （6）, cover board（2）And shell-type fin（3）It is made of stainless steel, aluminium alloy or copper material.

7. according to claim 1-6 any one of them finned heat pipe coupling radiators, it is characterised in that：The liquid-sucking core （10）With sheet liquid-sucking core（4）Copper mesh by being provided with tiny copper powder and Filamentous nickel powder is made.