CN220304349U

CN220304349U - VC module naturally dissipates heat

Info

Publication number: CN220304349U
Application number: CN202321883783.3U
Authority: CN
Inventors: 吴佩娥; 王振钦; 田野; 邹长江
Original assignee: Dongguan Zhihui Chuangfu Electronic Technology Co ltd; Dongguan Jifu Metallic Products Co ltd
Current assignee: Dongguan Zhihui Chuangfu Electronic Technology Co ltd; Dongguan Jifu Metallic Products Co ltd
Priority date: 2023-07-18
Filing date: 2023-07-18
Publication date: 2024-01-05
Anticipated expiration: 2033-07-18

Abstract

The utility model discloses a natural heat dissipation VC (vitamin C) module, wherein the upper core plate structure and the lower core plate structure have the same structure and respectively comprise a plurality of dendritic layer plate units, one side or two sides of each layer plate unit are respectively formed with a plurality of fin units, and each fin unit is respectively arranged at intervals along the length direction of the layer plate unit; each layer plate unit is arranged up and down alternately along the transverse direction of the folding core plate, at least one vertical folding fin is formed and connected between each fin unit and the adjacent layer plate unit, and each vertical folding fin is respectively supported and acted on the upper layer core plate structure and the lower layer core plate structure. Compared with the prior art, the folding core plate replaces the powder column structure in the prior art, so that the supporting strength of the soaking plate is improved, the condensation area inside the soaking plate is increased, and the heat exchange efficiency of working fluid and the heat dissipation efficiency of the VC module are improved.

Description

VC module naturally dissipates heat

Technical Field

The utility model relates to the technical field of VC radiators, in particular to a natural radiating VC module.

Background

In the traditional VC module structure, the upper and lower plates of the VC are made of red copper, powder columns and copper nets are required to be placed in the copper VC, 150-200 meshes are selected for the copper nets, the powder columns are selected for the supporting points of the layout structure in a specification with the diameter of 3mm, and pure water is filled in the powder columns. The production process comprises the steps of placing a lower cover into a copper net for positioning and sintering, and placing a powder column into an upper cover according to the process design for high-temperature diffusion welding at 900 ℃; and finally, filling water, vacuumizing and sealing.

The conventional VC module structure has the following disadvantages: the inside of the VC board module is supported by virtue of the powder column structure, so that the supporting performance is poor; the pure water in the interior has a high boiling point, and relies on capillary force in the interior as a transmission path.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a natural heat dissipation VC module, which improves the supporting performance of the VC module, increases the condensation area of the inner cavity of the VC module and improves the heat exchange efficiency of the working fluid in the VC module.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the natural heat dissipation VC module comprises a soaking plate, wherein the soaking plate comprises an upper plate and a lower plate, a concave cavity is formed in the middle part of the lower plate, the upper plate and the lower plate are connected in an overlapping manner, the upper plate and the concave cavity surround to form a VC cavity, a folding core plate is arranged in the VC cavity and comprises a branch core plate structure or a fin core plate structure, the folding core plate forms an upper core plate structure and a lower core plate structure through blanking, the lower core plate structure is fixedly connected to the bottom surface of the concave cavity, and the upper core plate structure is supported and acts on the upper plate; a plurality of vertical folding fins are formed and connected between the upper core plate structure and the lower core plate structure, and the VC cavity is separated by the vertical folding fins to form a two-dimensional runner structure.

In a further technical scheme, in the branch core plate structure, the upper core plate structure and the lower core plate structure have the same structure and respectively comprise a plurality of dendritic layer plate units, one side or two sides of each layer plate unit are respectively formed with a plurality of fin units, and each fin unit is respectively arranged at intervals along the length direction of the layer plate unit; each layer plate unit is arranged up and down alternately along the transverse direction of the folding core plate, at least one vertical folding fin is formed and connected between each fin unit and the adjacent layer plate unit, and each vertical folding fin is respectively supported and acted on the upper layer core plate structure and the lower layer core plate structure.

In a further aspect, the projected shape of the fin unit is rectangular or triangular.

In a further technical scheme, a plurality of fin units are respectively formed on two sides of the laminate unit, and the fin units on the two sides are distributed in a staggered manner; the fin units are rectangular, two sides of each fin unit and the adjacent laminate units are hollowed, the vertical folding fins are connected to the outer sides of the fin units in a molding mode, and two sides of each fin unit are respectively provided with a runner hole unit.

In a further technical scheme, in the fin core plate structure, the vertical folding fins are arranged in an extending mode along the length direction or the width direction of the folding core plate, the vertical folding fins are arranged side by side at intervals, and another long flow channel unit is formed between two adjacent vertical folding fins.

In a further technical scheme, the upper surface of the vapor chamber is provided with a radiating fin structure, and the radiating fin structure comprises a plurality of fin units which are respectively fixed on the upper surface of the vapor chamber through brazing; the fin units are distributed at intervals in a straight line or in a circular radiation mode.

In a further technical scheme, the bottom of the fin unit is bent to form a turned edge, and the bottom surface of the turned edge is fixedly connected to the upper surface of the soaking plate through brazing; at least one lug is formed on the top edge of the fin unit, each lug is respectively bent, and the bending direction of each lug is the same as that of the flanging; the fin units are distributed at intervals in a straight line, and each lug of each fin unit is connected with the adjacent fin unit through brazing so as to form a radiating fin structure.

In a further technical scheme, the upper surface of the vapor chamber is provided with a longitudinal runner fin structure, the longitudinal runner fin structure comprises a plurality of inner runner radiating fins, a plurality of longitudinal duct units are respectively arranged in each inner runner radiating fin, and each longitudinal duct unit is respectively communicated with a VC cavity and the two-dimensional runner structure.

In a further technical scheme, the inside of the longitudinal duct unit is formed with a corrugated surface structure so as to increase the heat exchange contact area of the working fluid.

In a further technical scheme, a plurality of runner fin sockets are formed on the upper surface of the vapor chamber, and each runner fin socket is provided with at least one connecting groove respectively; the inner runner radiating fins are respectively inserted into the corresponding connecting grooves and fixedly connected through brazing.

By adopting the structure, compared with the prior art, the utility model has the following advantages: the utility model provides a natural heat dissipation VC module, wherein a folding core plate is arranged in a soaking plate, and the folding core plate with an upper layer structure and a lower layer structure is used for supporting the upper plate and the lower plate of the soaking plate, so that the supporting strength of the soaking plate is improved; a plurality of vertical folding fins are formed and connected between the upper core plate structure and the lower core plate structure, so that the condensation area inside the vapor chamber is increased, and the heat exchange efficiency of working fluid inside the vapor chamber is improved; each component is connected through a brazing process, so that gaps at the connecting positions are reduced, and the heat conduction efficiency is improved; the three-dimensional flow direction internal flow channel structure is provided, so that the heat exchange contact area of the internal working fluid and the heat exchange efficiency are further improved, and the heat dissipation efficiency of the VC module is improved; after the soaking plate structure of the folding core plate is adopted, the working fluid in the soaking plate structure can adopt R134a refrigerant, and the working fluid with a lower evaporation point can further improve the heat dissipation efficiency of the heat dissipation VC module so as to be suitable for natural heat dissipation work of a heat source device.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic diagram of the structure of a VC module of embodiment 1.

Fig. 2 is an exploded view of the VC module of embodiment 1.

Fig. 3 is a schematic structural diagram of a folded core in the VC module of the present utility model.

Fig. 4 is a schematic structural diagram of another folded core of the VC module of the present utility model.

Fig. 5 is a schematic structural diagram of a heat dissipation fin structure in the VC module of embodiment 1.

Fig. 6 is a schematic structural diagram of a VC module of embodiment 2.

Fig. 7 is a cross-sectional view of the VC module of example 2.

Fig. 8 is an enlarged view at a in fig. 7.

Fig. 9 is an exploded view of the VC module of embodiment 2.

Detailed Description

The following are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model.

The traditional copper VC module has the defects of heavy weight, high manufacturing cost and low supporting strength, and in order to solve the defects, the inventor provides a VC module with an improved inner structure of a vapor chamber.

Example 1

The embodiment provides a VC module with an external radiating fin structure, as shown in drawing 6 of fig. 1, the VC module with natural radiating comprises a soaking plate 1, wherein the soaking plate 1 comprises an upper plate 11 and a lower plate 12, a concave cavity 10 is formed in the middle of the lower plate 12, the upper plate 11 and the lower plate 12 are connected in an overlapped manner, the upper plate 11 and the concave cavity 10 surround to form a VC cavity, working fluid is injected into the VC cavity, and R134a refrigerant is selected as the working fluid; a folding core plate 13 is arranged in the VC cavity, the folding core plate 13 is punched to form an upper core plate structure 131 and a lower core plate structure 132, and an interlayer space is formed between the upper core plate structure 131 and the lower core plate structure 132; the lower core plate structure 132 is fixedly connected to the bottom surface of the concave cavity 10, and the upper core plate structure 131 is supported and acted on the upper plate 11; the upper core structure 131 and the lower core structure 132 have the same structure, and each of them includes a plurality of dendritic laminate units; along the transverse direction of the folded core 13, each layer of plate units are arranged alternately up and down, at least one vertical folding fin 134 is formed and connected between each fin unit 133 and the adjacent layer of plate units, and each vertical folding fin 134 respectively supports and acts on the upper layer core structure 131 and the lower layer core structure 132; a plurality of fin units 133 are respectively formed on two sides of the laminate unit, each fin unit 133 is respectively arranged at intervals along the length direction of the laminate unit, and each fin unit 133 on two sides is distributed in a staggered manner; the fin units 133 are rectangular, two sides of the fin units 133 and adjacent laminate units are hollowed out, the vertical folding fins 134 are connected to the outer sides of the fin units 133 in a molding way, and two sides of the fin units 133 respectively form a runner hole unit 130; the width d of the upper core flow passage hole unit 130 is 4mm; the height h of the interlayer space is 3mm.

All components of the soaking plate 1 in the present embodiment, including the upper plate 11, the lower plate 12, and the folded core plate 13, are made of aluminum alloy materials. Compared with the traditional VC made of copper, the VC can reduce material cost and improve enterprise income. The inside of the soaking plate 1 is provided with a folding core plate 13, and the upper plate and the lower plate of the soaking plate 1 are supported by the folding core plate 13 with an upper-lower layer structure, so that the supporting strength of the soaking plate 1 is improved; a plurality of vertical folding fins 134 are formed and connected between the upper core plate structure and the lower core plate structure, so that the condensation area inside the vapor chamber is increased, and the heat exchange efficiency of working fluid inside the vapor chamber is improved; the aluminum VC has light weight, the R134a refrigerant is filled, compared with pure water, the characteristic of the refrigerant does not depend on capillary force transmission, the pure water needs to depend on capillary force as a transmission path, and the refrigerant has low boiling point and quick liquid circulation heat exchange effect.

The principle is that each vertical folding fin 134 can increase the condensation area in the VC chamber, and improve the phase change efficiency and heat exchange speed of the working fluid, thereby improving the heat dissipation performance of the VC module.

In addition to the folded core plate 13 with the branch core plate structure, the utility model also provides the folded core plate 13 with the fin core plate structure, wherein the vertical folding fins 134 of the folded core plate structure extend along the length direction of the folded core plate, the vertical folding fins 134 are arranged side by side at intervals, and another long runner unit is formed between two adjacent vertical folding fins 134. The folding core plate 13 of the fin core plate structure has stronger longitudinal supporting function and can provide better supporting performance for the VC module; in addition, the upper core plate structure 131 of the folded core plate 13 of the fin core plate structure is provided with a plurality of spacing spaces 135, the extending direction of the spacing spaces 135 is perpendicular to the extending direction of the vertical folding fins 134, so that the upper core plate structure 131 of the folded core plate 13 of each core plate structure is provided with a plurality of spacing spaces 135, and the spacing spaces 135 are respectively communicated with each long runner unit.

The embodiment also provides an improved radiating fin structure 2, specifically, the upper surface of the vapor chamber 1 is provided with the radiating fin structure 2, the radiating fin structure 2 comprises a plurality of fin units 21, and each fin unit 21 is fixed on the upper surface of the vapor chamber 1 through brazing; the fin units 21 are distributed at intervals in a straight line; the bottom of the fin unit 21 is bent to form a turned edge 211, and the bottom surface of the turned edge 211 is fixedly connected to the upper surface of the soaking plate 1 through brazing; at least one lug 212 is formed on the top edge of the fin unit 21, and each lug 212 is respectively bent in the same bending direction as the flanging 211; the fin units 21 are arranged at intervals in a straight line, and the fins 212 of the fin units 21 are connected to the adjacent fin units 21, respectively, by brazing to constitute the heat radiating fin structure 2.

The fin units 21 in the improved radiating fin structure 2 are all made of aluminum alloy materials, so that the manufacturing cost is reduced, the manufacturing cost of products is further reduced, the connection of the fin units 21 is completed by adopting a brazing process, gaps at the connection positions can be reduced as much as possible, and the heat conduction efficiency is improved.

The VC module provided by the embodiment belongs to a natural heat dissipation aluminum VC module, and the manufacturing method adopts an integral aluminum material to design copper density of 8.96g/cm ³ Aluminum density 2.75g/cm ³ The weight of the natural heat dissipation aluminum VC module is approximately 164g, and the weight of the natural heat dissipation aluminum VC module is approximately 290g, if the natural heat dissipation aluminum VC module is made into copper VC aluminum fin module, the weight is approximately 290g, the weight reduction effect is obvious, the pressure resistance of the brazing area of the upper plate and the lower plate is effectively increased by the channel design of the inner folding core plate 13, the strong supporting force is realized, the heat exchange direction of the channel of the folding core plate 13 and the R134A refrigerant can be used for the vertical reverse gravity heat dissipation design without the capillary force transmission liquid, and the problem that the conventional copper heating plate VC is filled with pure water vertically is solvedThe reverse gravity heat dissipation efficiency is poor, and when the mute, the weight reduction and the vertical reverse gravity heat dissipation assembly are used in the market, the design can be used for market demands.

Specifically, the side of the lower plate 12 is provided with an injection port 14, the injection port 14 is provided with a liquid injection tube 3, the liquid injection tube 3 is respectively provided with a circular tube-shaped connecting nozzle section 32 and a square strip-shaped connecting portion 31, the connecting portion 31 is matched with the injection port 14, and the connecting portion 31 is fixed to the injection port 14 by brazing.

The preparation method of the aluminum VC module provided by the embodiment comprises the following steps: the material piece is required to be cleaned of greasy dirt before brazing, and the upper plate 11 and the folding core plate 13 are put into the front section of chain type brazing flux spraying equipment; then each material piece is baked for 10min at 200 ℃ to dry the soldering flux attached to the surface of the material piece; placing the lower plate 12 into the cavity of the graphite jig with the cavity facing upwards, placing the folding core plate 13 into the cavity of the lower plate, filling the concave cavity 10 of the lower plate 12 with solder paste, and clamping and embedding the connecting part 31 of the liquid injection pipe 3 into the injection port 14, placing the upper plate 11 above the lower plate 12, and pressing the folding core plate 13 against the lower part of the upper plate 11; then, carrying out tooling positioning on the material piece by using a flat graphite clamp, and simultaneously putting the material piece into a brazing chain furnace to finish brazing; after discharging from the furnace, performing an air tightness test and a helium detection test; finally, vacuumizing, injecting a certain amount of R134a refrigerant, and sealing the liquid injection pipe 3 to finish the production of the whole module.

Specifically, the side portion of the lower plate 12 is further provided with a plurality of fitting portions 15, and the fitting portions 15 are provided with positioning holes 150. So as to facilitate the assembly and use of the VC module on the heat source device.

Example 2

The utility model also provides a VC module with a three-dimensional runner structure, the internal structure of the vapor chamber 1 is basically the same, and the difference is that the upper surface of the VC module is provided with a longitudinal runner fin structure 4, the longitudinal runner fin structure 4 comprises a plurality of inner runner radiating fins 41, a plurality of longitudinal duct units 410 are respectively arranged in each inner runner radiating fin 41, and each longitudinal duct unit 410 is respectively communicated with a VC cavity and a two-dimensional runner structure. The two-dimensional flow channel structure and each longitudinal duct unit 410 form a three-dimensional flow channel structure, so that the phase change circulation space of the internal working fluid can be further improved, the heat exchange contact area of the internal working fluid is increased, and the passive heat dissipation efficiency of the VC module is improved.

The inside of the vapor chamber 1 of the VC module can be selectively assembled with the folded core plate 13 of the branch core plate structure or the folded core plate 13 of the fin core plate structure, when the inside of the vapor chamber 1 of the VC module is matched with the folded core plate 13 of the fin core plate structure, the spacing spaces 135 are respectively aligned with the corresponding connecting grooves 112, so as to ensure that each longitudinal duct unit 410 is respectively communicated with the VC chamber and the two-dimensional runner structure.

The inside of the longitudinal cell unit 410 is formed with a corrugated surface structure to increase the heat exchange contact area of the working fluid.

The upper surface of the vapor chamber 1 is provided with a plurality of runner fin sockets 111, and each runner fin socket 111 is provided with at least one connecting groove 112; the inner runner fins 41 are inserted into the corresponding connecting grooves 112, respectively, and are fixedly connected by brazing. Further improving the connection air tightness and heat conduction performance between the components.

The foregoing is merely exemplary of the present utility model, and those skilled in the art should not be considered as limiting the utility model, since modifications may be made in the specific embodiments and application scope of the utility model in light of the teachings of the present utility model.

Claims

1. The utility model provides a natural heat dissipation VC module, includes vapor chamber (1), vapor chamber (1) include upper plate (11) and hypoplastron (12), and the mid portion shaping of hypoplastron (12) has cavity (10), overlap between upper plate (11) and hypoplastron (12) and connect, and upper plate (11) and cavity (10) surround and form the VC cavity, its characterized in that: a folding core plate (13) is arranged in the VC cavity, the folding core plate (13) comprises a branch core plate structure or a fin core plate structure, the folding core plate (13) forms an upper core plate structure (131) and a lower core plate structure (132) through blanking, the lower core plate structure (132) is fixedly connected to the bottom surface of the concave cavity (10), and the upper core plate structure (131) supports and acts on the upper plate (11);

a plurality of vertical folding fins (134) are formed and connected between the upper core plate structure (131) and the lower core plate structure (132), and the VC chamber is separated by the vertical folding fins (134) to form a two-dimensional flow passage structure.

2. A natural heat dissipation VC module according to claim 1, wherein: in the branch core plate structure, the upper core plate structure (131) and the lower core plate structure (132) have the same structure, and respectively comprise a plurality of dendritic layer plate units, one side or two sides of each layer plate unit are respectively formed with a plurality of fin units (133), and each fin unit (133) is respectively arranged at intervals along the length direction of the layer plate unit;

along the transverse direction of the folded core plate (13), each layer plate unit is arranged up and down alternately, at least one vertical folding fin (134) is formed and connected between each fin unit (133) and the adjacent layer plate unit, and each vertical folding fin (134) respectively supports and acts on the upper layer core plate structure (131) and the lower layer core plate structure (132).

3. A natural heat dissipation VC module according to claim 2, wherein: the projected shape of the fin unit (133) is rectangular or triangular.

4. A natural cooling VC module according to claim 3, wherein: a plurality of fin units (133) are respectively formed on two sides of the laminate unit, and the fin units (133) on two sides are distributed in a staggered manner; the fin unit (133) is rectangular, two side edges of the fin unit (133) and the adjacent laminate units are arranged in a hollowed-out mode, the vertical folding fins (134) are connected to the outer side edges of the fin unit (133) in a molding mode, and two runner hole units (130) are formed on two sides of the fin unit (133) respectively.

5. A natural heat dissipation VC module according to claim 1, wherein: in the fin core plate structure, the vertical folding fins (134) are arranged in an extending manner along the length direction or the width direction of the folding core plate, the vertical folding fins (134) are arranged side by side at intervals, and another long flow channel unit is formed between two adjacent vertical folding fins (134).

6. A natural heat dissipation VC module according to any one of claims 1 to 5, wherein: the upper surface of the soaking plate (1) is provided with a radiating fin structure (2), the radiating fin structure (2) comprises a plurality of fin units (21), and each fin unit (21) is fixed on the upper surface of the soaking plate (1) through brazing; the fin units (21) are distributed at intervals in a straight line or distributed in a circular radiation manner.

7. The natural cooling VC module according to claim 6, wherein: the bottom of the fin unit (21) is bent to form a turned-over edge (211), and the bottom surface of the turned-over edge (211) is fixedly connected to the upper surface of the soaking plate (1) through brazing; at least one lug (212) is formed on the top edge of the fin unit (21), and each lug (212) is respectively arranged in a bending way, and the bending direction of each lug is the same as that of the flanging (211); the fin units (21) are distributed at intervals in a straight line, and each lug (212) of each fin unit (21) is connected to the adjacent fin unit (21) through brazing so as to form the radiating fin structure (2).

8. A natural heat dissipation VC module according to any one of claims 1 to 5, wherein: the upper surface of the soaking plate (1) is provided with a longitudinal runner fin structure (4), the longitudinal runner fin structure (4) comprises a plurality of inner runner radiating fins (41), a plurality of longitudinal duct units (410) are respectively arranged in each inner runner radiating fin (41), and each longitudinal duct unit (410) is respectively communicated with the VC cavity and the two-dimensional runner structure.

9. The natural cooling VC module according to claim 8, wherein: the inside of the longitudinal duct unit (410) is formed with a corrugated surface structure to increase the heat exchange contact area of the working fluid.

10. The natural cooling VC module set according to claim 9, wherein: the upper surface of the soaking plate (1) is formed with a plurality of runner fin sockets (111), and each runner fin socket (111) is provided with at least one connecting groove (112) respectively; the inner runner radiating fins (41) are respectively inserted into the corresponding connecting grooves (112) and are fixedly connected through brazing.