CN206177110U

CN206177110U - Vapor chamber

Info

Publication number: CN206177110U
Application number: CN201621101819.8U
Authority: CN
Inventors: 杨佳; 解寺明; 余涛; 娄开胜; 徐德好
Original assignee: Nanjing Aike America Energy Technology Co Ltd
Current assignee: Nanjing Aike America Energy Technology Co Ltd
Priority date: 2016-10-07
Filing date: 2016-10-07
Publication date: 2017-05-17
Anticipated expiration: 2026-10-07

Abstract

The utility model discloses a vapor chamber, including apron and bottom plate, the corresponding position on one side of relative processes the channel respectively to the apron with the bottom plate, lap the same with the channel structure of bottom plate, the channel is one or many parallel snakelike groove ways, and apron and end joining of plates face bonding are lapped the channel relative with the bottom plate and is formed sealed cavity, to cavity inside evacuation and fill working medium, working medium is carried out evaporation -condensation and is realized heat transfer in the cavity. The utility model discloses heat transfer efficiency is high, and it influences not receive the device to place the orientation, and compressive capacity is strong, and manufacturing process is simple, is fit for batch production.

Description

A kind of soaking plate

Technical field

The utility model belongs to augmentation of heat transfer and electronic component cooling field, and in particular to a kind of new and effective heat transfer Soaking plate.

Background technology

With continuing to develop for science and technology, the development of electronic equipment tends to high-performance, miniaturization, integrated, the work(of device Rate and heat flow density are improved constantly, and the requirement to device radiating effect is also improved constantly.The heat dispersion of device has a strong impact on and sets Standby reliability and stability, is the key factor of the further development of equipment.

Pulsating heat pipe is a kind of new, efficient, heat transfer element for can be used under the conditions of high heat flux, its operation principle with General heat pipe is different, and specifically, working medium is absorbed heat in hot junction and evaporated, and gas-liquid plug is formed in conduit internal random, due to pressure difference influence, Working medium shakes flowing in hot junction and cold end, realizes heat transfer.Pulsating heat pipe is divided into tubular type pulsating heat pipe and board-like pulsation heat again Pipe, tubular type pulsating heat pipe is, by the elongated metal thin tube with capillary function, snakelike formation pulsation heat to be bent to as needed Pipe, is mainly used in the heat transfer of fluid media (medium) thermal source, due to not possessing slab construction, is unsuitable for the cooling of solid thermal source；Board-like arteries and veins Also known as soaking plate, soaking plate two sides is slab construction to dynamic heat pipe, and inside has pulsation conduit, can be not only used for fluid media (medium) thermal source Cooling, it can also be used to the cooling of solid thermal source, range of application is wider.

Majority soaking plate integral channel section is generally triangle, rectangle and square at present, i.e., be made up of two boards, one Block is tabula rasa, and required section is processed on another block of plate, but this kind of pulsating heat pipe is respectively provided with horn structure, and liquid is attached to wedge angle Region, liquid is provided back by the surface tension of liquid herein, and heater members placement direction has certain influence on its performance；While by In the presence of wedge angle, the formation of gas-liquid plug is also relatively difficult, and device temperature amplitude of variation is larger, and heat transfer property is affected.

Chinese patent literature CN 102128552A disclose a kind of single-face corrugated plate type pulsating heat pipe, including a metal bottom Plate, pulsation conduit is collectively formed between the trough of wave-shape board two by spot welding mode and base plate, slit is formed between adjacent conduit and is connected It is logical.Although this kind of structure increase heat pipe and air contact area, but restricted application；Meanwhile, connected using slit, flowing Resistance increases, and is unfavorable for that gas-liquid plug is moved；Processing technology is complicated, is not suitable for batch production.

Chinese patent literature CN 102691999A disclose a kind of plate type pulsating heat pipe for great power LED cooling, arteries and veins Dynamic heat pipe includes substrate and the bundle of capillary tubes milled out on substrate, and bundle of capillary tubes bottom has a cavity as liquid pool.Using this Plant structure, it is ensured that the phenomenon that will not be dryouied with the presence of liquid zone all the time below thermal source, but thermogenetic steaming is received in liquid pool The gas-liquid plug existed originally in vapour meeting opposite heat tube is impacted, and causes bubbles burst, and then influence the heat transfer of heat pipe.

Chinese patent literature CN 101545735A disclose a kind of micro-channel flat plate heat pipe of metal wire structure, by metal Silk is folded in the hollow housing between upper lid and base plate, and wire collectively forms liquid film area and steam channel with upper lid, base plate, The performance of flat-plate heat pipe can be optimized by adjusting the spacing between wire.The hole of this kind of heat transfer property of structure and wire The stability that degree and size have certain relation, flat-plate heat pipe performance is difficult to ensure that.

Chinese patent literature CN 101493296A disclose a kind of novel flat-plate heat with stratose microflute low-grade fever nest of tubes The array through hole comprising more than one laid out in parallel, is provided with some micro- fins in pipe, flat-plate heat pipe on through-hole wall, adjacent Capillary slot is formed between micro- fin.This kind of structure processed complex, it is impossible to realize large-scale production.

Utility model content

The purpose of this utility model is that a kind of heat transfer efficiency of offer is high, is not influenceed by device placement direction, anti-pressure ability By force, manufacturing process is simple, is adapted to the soaking plate of batch production.

The technical scheme for realizing the utility model purpose is：A kind of soaking plate, including cover plate and base plate, cover plate and base plate phase Correspondence position to side processes conduit respectively, and cover plate is identical with the channel structure of base plate, and the conduit is one or more simultaneously Capable snakelike conduit, cover plate is welded with the joint face of base plate, and cover plate and the relative conduit of base plate are internally formed closed cavity；To chamber Internal portion vacuumizes and fills working medium, and working medium is evaporated condensation in cavity and realizes heat transfer.

Compared with prior art, beneficial technique effect is the utility model：

(1) the section constitution circle or subcircular of the utility model cover plate and the snakelike conduit of base plate, easily form gas-liquid plug； (2) working medium is filled after internal cavity is vacuumized, working medium forms vent plug and fluid column arranged for interval and in random distribution in conduit State, in evaporation ends, working medium heat absorption produces bubble, rapid expansion and boosts, and promotes working medium to flow to cryogenic condensation end；In condensation End, bubble cooling meat simultaneously ruptures, and pressure declines；Exist between pressure difference and adjacent conduit because evaporation ends and condensation end are present Pressure imbalance so that working medium Oscillation Flows between evaporation ends and condensation end, so as to realize the transmission of heat, equivalent heat transfer Coefficient is big；In whole process, working medium fully relies on thermal drivers and carries out self concussion；Its runnability does not receive gravity shadow substantially simultaneously Ring, using more extensive；(3) projection between the snakelike conduit of the utility model provides intensity enough supports, resistance to compression energy Power is strong.

Brief description of the drawings

Fig. 1 is the utility model soaking plate overall structure diagram.

Fig. 2 is that the utility model one kind joins end to end channel structure schematic diagram.

Fig. 3 is that the utility model another kind joins end to end channel structure schematic diagram.

Fig. 4 is that a kind of head and the tail of the utility model are not attached to channel structure schematic diagram.

Fig. 5 is that another head and the tail of the utility model are not attached to channel structure schematic diagram.

Fig. 6 is the conduit schematic diagram of two nested serpentine structures of the utility model.

Fig. 7 is the utility model semicircle conduit section enlarged diagram.

Fig. 8 is the utility model semicircular band straight flange conduit section enlarged diagram.

Fig. 9 is the utility model half elliptic conduit section enlarged diagram.

Figure 10 is the utility model half elliptic band straight flange conduit section enlarged diagram.

Figure 11 is the closed cavity schematic cross-section of the utility model cover plate conduit composition corresponding with base plate.

Figure 12 is that the utility model soaking plate carries out experimental comparison figure with equivalent parameters aluminium sheet under the conditions of same test.

Figure 13 is that the utility model soaking plate is tried with comparable size rectangular duct soaking plate under the conditions of same test Test comparison diagram.

Specific embodiment

The utility model is described in further detail below in conjunction with the accompanying drawings.

With reference to Fig. 1-Fig. 6, a kind of soaking plate of the present utility model, including cover plate 1 and base plate 2, cover plate 1 and base plate 2 are relative The correspondence position of side processes conduit 3 respectively, and cover plate 1 is identical with the channel structure of base plate 2, and the conduit 3 is one or more Parallel snakelike conduit, cover plate 1 is welded with the joint face of base plate 2, and cover plate 1 and the relative conduit of base plate 2 are internally formed closing chamber Body；Working medium is vacuumized and filled to inside cavity, and working medium is evaporated condensation in cavity and realizes heat transfer.

Further, as Figure 7-9, the section of conduit is semicircle, semicircular band straight flange, half elliptic or semiellipse Shape band straight flange；

Further, semicircle radius is 0.5-10mm.The major semiaxis and semi-minor axis length of half elliptic are 0.5-10mm.

Further, as shown in Figures 2 and 3, snakelike conduit is end to end.

Further, as shown in Figure 4 and Figure 5, snakelike conduit head and the tail do not connect.

Further, conduit by milling out, die casting or wire cutting technology are obtained.

Further, cover plate 1 is welded with the joint face of base plate 2 by diffusion welding (DW) mode.

Further, working medium is any one of acetone, ethanol, methyl alcohol, deionized water.

Further, soaking plate material is any one of copper, copper alloy, aluminium, aluminium alloy.

The utility model soaking plate processing method is as follows：

It is semicircle, semicircular band straight flange, half respectively to mill out section in cover plate and any side ball cutter of base plate first Oval or conduit of the half elliptic with straight flange, the conduit can be that to join end to end can also be the disjunct structure of head and the tail, and Ensure that the surface roughness with conduit one side is less than or equal to 1.6；

Cover plate and base plate are welded using the welding manner of diffusion welding (DW)；

Internal cavity is vacuumized after reserved hole position is to welding, and fills working medium, then it is sealed to closed Cavity；Soaking plate profile is machined out and obtains required structure.

With reference to specific embodiment, the utility model is described in further detail.

Embodiment 1

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 7, a kind of soaking plate, including cover plate 1 and base plate 2, cover plate 1 and the opposite side of base plate 2 Correspondence position process conduit 3 respectively, cover plate 1 is identical with the channel structure of base plate 2, and the conduit 3 is one end to end Snakelike conduit, conduit section is semicircle, and cover plate 1 is welded with the joint face of base plate 2, inside cover plate 1 and the relative conduit of base plate 2 Form closed cavity as shown in figure 11；Working medium is vacuumized and filled to inside cavity, and it is real that working medium is evaporated condensation in cavity Existing heat transfer.

Soaking plate and equivalent parameters aluminium sheet are carried out into Experimental comparison under the conditions of same test, is drawn such as table 1 and Figure 12 institutes Show result：

Table 1

Power of heat source	10W	20W	30W	40W
					Soaking plate (DEG C)	39.2	45.9	52.4	60.1
Aluminium sheet (DEG C)	38.5	52.6	65.1	78.2

From experimental result as can be seen that using this kind of structure, being remarkably improved heat transfer property, heat source temperature is effectively reduced.

Soaking plate and equivalent parameters rectangular duct pulsating heat pipe are carried out into Experimental comparison under the conditions of same test, draw as Result shown in Figure 13.

From experimental result as can be seen that using this kind of structure, thermal source maximum temperature decreases, while heat source temperature fluctuates Small, temperature is relatively stablized, and acutely thermal source will not in itself be caused damage because of temperature change.

Embodiment 2

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 8, a kind of soaking plate, including cover plate 1 and base plate 2, cover plate 1 and the opposite side of base plate 2 Correspondence position process conduit 3 respectively, cover plate 1 is identical with the channel structure of base plate 2, and the conduit 3 is one end to end Snakelike conduit, conduit section is semicircle with straight flanges, and semicircle with straight flanges are U row structures, by semicircle and semicircle two ends edge The straight flange 31 that vertical direction extends equal length is constituted, and two straight flanges are parallel to each other, and the effect of straight flange is joint face anti-when welding Only semicircle is because of crimp, it is ensured that the section of closed cavity is rounded；Cover plate 1 is welded with the joint face of base plate 2, the He of cover plate 1 The relative conduit of base plate 2 is internally formed closed cavity；Working medium is vacuumized and filled to inside cavity, and working medium is steamed in cavity Feel cold to coagulate and realize heat transfer.

Embodiment 3

With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 9, a kind of soaking plate, including cover plate 1 and base plate 2, cover plate 1 and the opposite side of base plate 2 Correspondence position process conduit 3 respectively, cover plate 1 is identical with the channel structure of base plate 2, and the conduit 3 is one end to end Snakelike conduit, conduit section is half elliptic, and cover plate 1 is welded with the joint face of base plate 2, in cover plate 1 and the relative conduit of base plate 2 Portion forms closed cavity；Working medium is vacuumized and filled to inside cavity, and working medium is evaporated condensation in cavity and realizes that heat is passed Pass.

Embodiment 4

With reference to Fig. 1, Fig. 2, Fig. 3 and Figure 10, a kind of soaking plate, including cover plate 1 and base plate 2, cover plate 1 and base plate 2 are with respect to one The correspondence position of side processes conduit 3 respectively, and cover plate 1 is identical with the channel structure of base plate 2, and the conduit 3 is one end to end Snakelike conduit, conduit section be half elliptic band straight flange, half elliptic band straight flange structure by half elliptic and half elliptic two End is extends in the vertical direction equal length straight flange 31 and constitutes；Cover plate 1 is welded with the joint face of base plate 2, and cover plate 1 and base plate 2 are relative Conduit be internally formed closed cavity；Working medium is vacuumized and filled to inside cavity, and it is real that working medium is evaporated condensation in cavity Existing heat transfer.

Embodiment 5

As shown in Figure 1, Figure 4 and Figure 5, a kind of soaking plate, including cover plate 1 and base plate 2, cover plate 1 and the opposite side of base plate 2 Correspondence position processes conduit 3 respectively, and cover plate 1 is identical with the channel structure of base plate 2, and the conduit 3 is what a head and the tail did not connected Snakelike conduit, cover plate 1 is welded with the joint face of base plate 2, and cover plate 1 and the relative conduit of base plate 2 are internally formed envelope as shown in figure 11 Closed chamber body；Working medium is vacuumized and filled to inside cavity, and working medium is evaporated condensation in cavity and realizes heat transfer.

As shown in Fig. 7-Figure 10, conduit section is that semicircle, semicircular band straight flange, half elliptic or half elliptic band are straight Side.

In sum, due to using new channel structure, with simple structure, anti-pressure ability is strong, passes for the utility model The thermal efficiency is high, the advantages of manufacture craft is simple, has a extensive future, especially in the field that the heat flow densities such as power electronics are high, can Effectively and rapidly to reduce the temperature of electronic device, extend the service life of electronic device.

Claims

1. a kind of soaking plate, it is characterised in that including cover plate (1) and base plate (2), cover plate (1) and base plate (2) opposite side it is right Position is answered to process conduit (3) respectively, cover plate (1) is identical with the channel structure of base plate (2), the conduit (3) is one or more Parallel snakelike conduit, cover plate (1) is welded with the joint face of base plate (2), and cover plate (1) and the relative conduit of base plate (2) form envelope Closed chamber body；Working medium is vacuumized and filled to inside cavity, and working medium is evaporated condensation in cavity and realizes heat transfer.

2. soaking plate according to claim 1, it is characterised in that the section of conduit (3) is semicircle or half elliptic.

3. soaking plate according to claim 2, it is characterised in that semicircle radius is 0.5-10mm.

4. soaking plate according to claim 2, it is characterised in that the major semiaxis and semi-minor axis length of half elliptic are 0.5- 10mm。

5. soaking plate according to claim 1 and 2, it is characterised in that snakelike conduit is end to end.

6. soaking plate according to claim 1 and 2, it is characterised in that snakelike conduit head and the tail do not connect.

7. soaking plate according to claim 1, it is characterised in that cover plate (1) passes through diffusion welding (DW) with the joint face of base plate (2) Mode is welded.

8. soaking plate according to claim 1, it is characterised in that during working medium is acetone, ethanol, methyl alcohol, deionized water Any one.

9. soaking plate according to claim 1, it is characterised in that during soaking plate material is copper, copper alloy, aluminium and aluminium alloy Any one.