CN208706628U - A kind of Back Word type medium Copper-Graphite Composite radiator based on liquid metal - Google Patents

Abstract

The utility model discloses a kind of Back Word type medium Copper-Graphite Composite radiator based on liquid metal, including Back Word type heat-conductive bracket, four loop type passage of heat and multi-disc aluminum alloy heat sink；The Back Word type heat-conductive bracket forms a rectangular-ambulatory-plane by lower horizontal segment, right vertical section, upper horizontal segment and left vertical section, the bottom surface of lower horizontal segment is for being connected on pyrotoxin, four loop type passage of heat are located at the two sides of right vertical section and left vertical section, and multi-disc aluminum alloy heat sink parallel interval is fixed on the middle part of horizontal segment；And Back Word type heat-conductive bracket is combined using copper and graphite material, is filled with flowable liquid metal in each loop type passage of heat；The Back Word type bracket being combined due to using copper and graphite, in conjunction with the loop type passage of heat for being filled with liquid metal for being located at its two sides, and parallel interval is fixed thereon the multi-disc aluminum alloy heat sink in portion, substantially increases radiating efficiency, and structure is simple, technique requirement is lower.

Description

A kind of Back Word type medium Copper-Graphite Composite radiator based on liquid metal

Technical field

The utility model relates to the radiator field of electronic device more particularly to it is a kind of be based on liquid metal Back Word type medium Copper-Graphite Composite radiator.

Background technique

With the fast development of electronics and mechanics of communication, using for high performance chips and integrated circuit is more and more extensive, electricity Sub- equipment consumed electric energy, such as RF power amplification during operation, fpga chip, power source products, other than useful work, greatly Part can be converted to heat.

Nowadays, the power of electronic device chip constantly increases, and volume is gradually reduced, and most of electronic chips to Machine calorific value is lower and calorific value is larger when running, and transient temperature rise is very fast；And high temperature performance to electronic device and can use the longevity Life all generates harmful influence, and the heat dissipation technology of electronic device increasingly becomes electronic equipment and develops, is very crucial in development Technology, the purpose is to the running temperatures to electronic equipment to be controlled (or thermal control), with guarantee its work stability and Reliability, it is seen then that the heat dissipation problem of electronic device has become the bottleneck of electronic technology development, to high property in international and Chinese market The demand of energy Heat Conduction Material and device is extremely urgent.

But the common type of cooling of existing cooling electronic component has:

1) free convection and the heat radiation of surrounding air self-cooled: are only relied on to radiate；The manufacture of self-cooling type radiator, peace It fills, is easy to use, but heat dissipation effect is poor, so being typically only used for the lesser power electronic devices of current capacity.

2) air-cooled: to radiate by the cold air of flowing, supplied by fan or air blower by certain air duct；It is air-cooled The heat dissipation effect of formula is got well than self-cooled heat dissipation effect, suitable for the power electronic devices of intermediate size and large capacity, the disadvantage is that When capacity is larger, volume, the weight of radiator are all very big.

3) oil injection type: transformer oil is generallyd use as cooling medium, it is cooling two kinds cooling with oil pipe to be divided into oil immersion；Oil is cold The good cooling results of formula can prevent extraneous dust, and radiator does not almost have to repair, but volume and weight is larger.

4) water-cooled: making cooling medium using water, good heat dissipation effect, and radiator is small in size.

5) the principle heat transfer that device is generated of heat transpiration-cooled: is absorbed when evaporating using liquid boiling to scattered Hot face；Such as heat-pipe radiator, transpiration-cooled good heat dissipation effect, radiator is small in size, light-weight, is a kind of preferable cooling Mode, but heat spreader structures are complicated, technique requires high.

Therefore, the prior art still has much room for improvement and develops.

Utility model content

In order to solve the above technical problems, to provide a kind of Back Word type copper-graphite based on liquid metal compound for the utility model Material radiator, radiating efficiency is high, structure is simple, technique requirement is low.

The technical solution of the utility model is as follows: a kind of Back Word type medium Copper-Graphite Composite heat dissipation based on liquid metal Device, comprising: Back Word type heat-conductive bracket, four loop type passage of heat and multi-disc aluminum alloy heat sink；The thermally conductive branch of Back Word type Frame forms a rectangular-ambulatory-plane by lower horizontal segment, right vertical section, upper horizontal segment and left vertical section, and the bottom surface of the lower horizontal segment is used for It is connected on pyrotoxin, four loop type passage of heat are located at the two sides of right vertical section and left vertical section, and multi-disc aluminium closes Golden cooling fin parallel interval is fixed on the middle part of horizontal segment；The Back Word type heat-conductive bracket using copper and graphite material it is compound and At being filled with flowable liquid metal in each loop type passage of heat.

The Back Word type medium Copper-Graphite Composite radiator based on liquid metal, in which: the thermally conductive branch of Back Word type The lower horizontal segment of frame, right vertical section, upper horizontal segment and left vertical section cross section be square, and lower horizontal segment and upper level The length of section is 10 ~ 15 times of the square side length, and the length of right vertical section and left vertical section is the square side length 10 ~ 20 times.

The Back Word type medium Copper-Graphite Composite radiator based on liquid metal, in which: four loop types are thermally conductive logical Road is all made of copper pipe and closed circuit type pipeline is made, and is respectively welded at the two sides of Back Word type heat-conductive bracket right vertical section and left vertical section On face, and the internal diameter of copper pipe used is the 1/10 of the square side length.

The Back Word type medium Copper-Graphite Composite radiator based on liquid metal, in which: the aluminum alloy heat sink It is in the form of annular discs, it is provided centrally with the square hole that adaptation is sleeved on horizontal segment, and the outer diameter of the aluminum alloy heat sink is the square 3 times of side length, the spacing between adjacent two aluminum alloy heat sink are the 1/2 of the aluminum alloy heat sink thickness, and solid by soldering It is scheduled on the upper horizontal segment of Back Word type heat-conductive bracket.

The Back Word type medium Copper-Graphite Composite radiator based on liquid metal, in which: the thermally conductive branch of Back Word type The lower horizontal segment of frame is connected via bolt with pyrotoxin.

A kind of Back Word type medium Copper-Graphite Composite radiator based on liquid metal provided by the utility model, due to The Back Word type bracket being combined using copper and graphite, it is thermally conductive in conjunction with the loop type for being filled with liquid metal for being located at its two sides Channel and parallel interval are fixed thereon the multi-disc aluminum alloy heat sink in portion, substantially increase radiating efficiency, and structure letter Single, technique requires lower.

Detailed description of the invention

Fig. 1 is that the front view structure of Back Word type medium Copper-Graphite Composite radiator of the utility model based on liquid metal is shown It is intended to；

Fig. 2 is the left view of the utility model Fig. 1；

Fig. 3 is the top view of the utility model Fig. 1.

Specific embodiment

Below with reference to attached drawing, specific embodiment of the present utility model and embodiment are described in detail, it is described Specific embodiment only to explain the utility model, be not intended to limit specific embodiment of the present utility model.

As shown in Figure 1, Fig. 1 is Back Word type medium Copper-Graphite Composite radiator of the utility model based on liquid metal Schematic view of the front view, the radiator include that 310, four loop type passage of heat 320 of Back Word type heat-conductive bracket and multi-disc aluminium close Golden cooling fin 330；The Back Word type heat-conductive bracket 310 forms one by lower horizontal segment, right vertical section, upper horizontal segment and left vertical section The bottom surface of a rectangular-ambulatory-plane, the lower horizontal segment of the Back Word type heat-conductive bracket 310 is used to be connected on the pyrotoxin 100 of electronic device, Connection type can be attached by bolt；In conjunction with shown in Fig. 2 and Fig. 3, Fig. 2 is the left view of the utility model Fig. 1, and Fig. 3 is The top view of the utility model Fig. 1, it is right vertical that four loop type passage of heat 320 are located at the Back Word type heat-conductive bracket 310 The two sides of section and left vertical section, and 330 parallel interval of multi-disc aluminum alloy heat sink is fixed on water in the Back Word type heat-conductive bracket 310 The middle part of flat section；Meanwhile the Back Word type heat-conductive bracket 310 is combined using copper and graphite material, and each loop type is led Flowable liquid metal is filled in the passage of heat 320.

On the one hand, liquid metal is a kind of completely new high thermal conductivity fluid media (medium), and heat transfer coefficient is greater than 30W/m ﹒ K, and has The viscosity that can be compared with water phase.When being packaged in lesser circulation duct or regional area, there are the feelings of the temperature difference around Under condition, by density variation generate free convection, can have very big motive force to liquid metal so that liquid metal by Heat is taken to low-temperature end from temperature end by free convection；In addition, liquid metal relies on the advantage of itself high thermal conductivity, it can also By heat transfer, heat is efficiently transmitted to radiating end.

On the other hand, medium Copper-Graphite Composite is a kind of novel high thermal conductivity alloy material, according to wherein content of graphite The thermal coefficient of composite material, can be maintained 450W/m ﹒ K or so by difference, and the heat transfer system of copper product used in radiator at present Number is usually no more than 250W/m ﹒ K, it can be seen that, the radiator prepared using medium Copper-Graphite Composite, only by the material Radiating efficiency can be improved 30-40% or so by superior thermal conductivity energy.

Illustrate in the front view structure of Back Word type medium Copper-Graphite Composite radiator of the utility model based on liquid metal In preferred embodiment, the lower horizontal segment of the Back Word type heat-conductive bracket 310, right vertical section, upper horizontal segment and left vertical section Cross section is square shape, and the length of lower horizontal segment and upper horizontal segment is 10 ~ 15 times of the square side length, and the right side is hung down The length of straight section and left vertical section is 10 ~ 20 times of the square side length.

Preferably, four loop type passage of heat 320 are all made of copper pipe and closed circuit type pipeline are made, and are respectively welded at Back Word On the two sides of the right vertical section of type heat-conductive bracket 310 and left vertical section, and the internal diameter of copper pipe used is the square side length 1/10。

Preferably, the aluminum alloy heat sink 330 is in the form of annular discs, and center is provided with adaptation, and to be sleeved on Back Word type thermally conductive The square hole of horizontal segment on bracket 310, and the outer diameter of the aluminum alloy heat sink 330 is 3 times of the square side length, adjacent two aluminium closes Spacing between golden cooling fin 330 is the 1/2 of 330 thickness of aluminum alloy heat sink, and it is thermally conductive by soldering to be fixed on Back Word type The upper horizontal segment of bracket 310.

Back Word type heat-conductive bracket 310 is prepared by using medium Copper-Graphite Composite, and using liquid metal filling welding On its two sidewalls circulation duct or closed area in, the high thermal conductivity ability of liquid metal and copper-graphite must be will enable It is coupled together, realizes innovative fansink designs and industrialization.

Demand based on numerous industries to high-end heat dissipation, Back Word type copper-graphite of the utility model based on liquid metal are multiple Condensation material radiator can be not only used for the chip heat pipe of high-performance server, desktop computer, notebook, industrial personal computer and communication base station Reason, and in advanced energy field (industrial exhaust heat utilization, solar power generation, focusing photocell cooling, fuel cell etc.), aviation Thermal control field, battery cooling field, field of photoelectric devices (such as projector, power electronics devices), field of LED illumination, micro-nano Many key areas such as electronic mechanical system, biochip and electric car play indispensable role.

It, can will be in medium Copper-Graphite Composite specifically, for the pyrotoxin 100 of 600 × 200 × 50mm aluminum substrate The content of graphite controls between 5 ~ 10wt.%, it is preferred to use the composite material of 8wt.% graphite and 92wt.% copper prepares Back Word type Heat-conductive bracket 310, and be connected by bolt with the pyrotoxin 100 of the aluminum substrate.

Specifically, the lower horizontal segment of the Back Word type heat-conductive bracket 310, right vertical section, upper horizontal segment and left vertical section Cross section is all made of the square shape of 40 × 40mm, and lower horizontal segment and upper horizontal section length are 400mm, right vertical section and a left side The length of vertical section is 500mm.

Specifically, pour into the fusing point of the liquid metal in the loop type passage of heat 320 less than 10 DEG C, preferably by The liquid metal of 56wt.%In, 29wt.%Sn and 15wt.%Bi composition.

Specifically, the loop type passage of heat 320 is made of the copper pipe of internal diameter 4mm, the aluminum alloy heat sink 330 The disk of outer diameter 120mm is made of the aluminium alloy plate of thickness 0.5mm, and is cut into the square hole of 40 × 40mm in center.

By testing radiating efficiency, compared to the radiator of existing same type, the utility model is based on liquid metal Back Word type medium Copper-Graphite Composite radiator, the high thermal conductivity ability of liquid metal and copper-graphite can be coupled together, will Radiating efficiency improves 60-80%, and structure is simple, technique requirement is lower.

It should be understood that the above is only the preferred embodiment of the utility model only, it is not sufficient to limit this reality With novel technical solution, for those of ordinary skills, within the spirit and principles of the present invention, Ke Yigen Increased and decreased according to above description, replaced, converted or is improved, and all these increases and decreases, replacement, transformation or improved technical side Case all should belong to the protection scope of the appended claims for the utility model.

Claims (5)

1. a kind of Back Word type medium Copper-Graphite Composite radiator based on liquid metal characterized by comprising Back Word type is led Hot bracket, four loop type passage of heat and multi-disc aluminum alloy heat sink；The Back Word type heat-conductive bracket is hung down by lower horizontal segment, the right side Straight section, upper horizontal segment and left vertical section form a rectangular-ambulatory-plane, and the bottom surface of the lower horizontal segment is used to be connected on pyrotoxin, Four loop type passage of heat are located at the two sides of right vertical section and left vertical section, and multi-disc aluminum alloy heat sink parallel interval is solid It is scheduled on the middle part of horizontal segment；The Back Word type heat-conductive bracket is combined using copper and graphite material, and each loop type is thermally conductive Flowable liquid metal is filled in channel.

2. the Back Word type medium Copper-Graphite Composite radiator according to claim 1 based on liquid metal, feature exist In the cross section of the lower horizontal segment of: the Back Word type heat-conductive bracket, right vertical section, upper horizontal segment and left vertical section be pros Shape, and the length of lower horizontal segment and upper horizontal segment is 10 ~ 15 times of the square side length, the length of right vertical section and left vertical section Degree is 10 ~ 20 times of the square side length.

3. the Back Word type medium Copper-Graphite Composite radiator according to claim 2 based on liquid metal, feature exist In: four loop type passage of heat are all made of copper pipe and closed circuit type pipeline are made, and are respectively welded at the Back Word type heat-conductive bracket right side and hang down On the two sides of straight section and left vertical section, and the internal diameter of copper pipe used is the 1/10 of the square side length.

4. the Back Word type medium Copper-Graphite Composite radiator according to claim 3 based on liquid metal, feature exist In: the aluminum alloy heat sink is in the form of annular discs, is provided centrally with the square hole that adaptation is sleeved on horizontal segment, and the aluminium alloy radiates The outer diameter of piece is 3 times of the square side length, and the spacing between adjacent two aluminum alloy heat sink is the aluminum alloy heat sink thickness 1/2, and the upper horizontal segment of Back Word type heat-conductive bracket is fixed on by soldering.

5. the Back Word type medium Copper-Graphite Composite radiator according to claim 1 based on liquid metal, feature exist In: the lower horizontal segment of the Back Word type heat-conductive bracket is connected via bolt with pyrotoxin.