CN105864733A - Special-shaped heat pipe radiator for car lamp - Google Patents

Abstract

The invention discloses a special-shaped heat pipe radiator for a car lamp. The special-shaped heat pipe radiator for the car lamp comprises a base and a plurality of radiating tubes, wherein the base is of a hollow structure and can contain cooling fluid; the lower portions of the radiating tubes are inserted into the base and fixed at the bottom of the base; notches are formed along the periphery of the portion, inside the base, of the radiating tubes, so that the cooling fluid or evaporated gas flows among the radiating tubes. Due to the facts that the radiating tubes are arranged on the same base, the radiating tubes are inserted into the bottom of the base, and the notches are formed in the portions, inserted into the base, of the radiating tubes, the cooling fluid can flow among the radiating tubes, the radiating tubes are uniform in heat radiating quantity, the situation that as the heat radiating quantity of a local heat source is too large, the temperature of the radiating tubes is too high is prevented, and the radiating performance and the radiating efficiency of the radiator are improved. By reasonably arranging the interval between upper heat transfer fins and lower heat transfer fins, the radiating area is enlarged, and the radiating efficiency is improved.

Description

A kind of special-shaped heat-pipe radiator for car light

Technical field

The present invention relates to a kind of heat-pipe radiator, a kind of special-shaped heat-pipe radiator for car light.

Background technology

Along with the development of electronic product, the power of some electronic products constantly increases, power consumption of dispelling the heat accordingly The most increasing, therefore the requirement to radiator is more and more higher, and unnecessary heat such as can not be the quickest Disperse, then can be accumulated generation high temperature, reach the most then can the equipment being currently running be caused Destroy, even cause fire.The high-capacity LED headlight particularly used on headlight for vehicles, it will usually deposit Multiple large-power LED light beads, part input power can only being converted of current high-powered LED lamp For luminous energy, remaining input power is completely converted into heat energy.Owing to headlight can being arranged, the space of radiator is non- The least, and when there being multiple LED lamp bead to dispel the heat simultaneously, it is impossible to arrange multiple radiator, if can not protect Card headlight heat radiation, then can affect service life and the luminescent properties of headlight.

Heat-pipe radiator is a kind of novel radiating device, receives in recent years and promotes widely, generally comprises One shell and a liquid-sucking core, wherein liquid-sucking core is provided in the internal side wall of Can, and shell comprises One evaporation ends and a condensation end.Additionally, also include condensate liquid inside shell.When shell is in order to dispel the heat, The evaporation ends of shell connects thermal source, and the condensate liquid being positioned in pipe absorbs the heat of evaporator section position and is evaporated to Gas, then due to the relation of overpressure difference, condensate liquid can flow toward condensation end；Condensate liquid is in condensation End cooling enters after condensing in the hole of liquid-sucking core, is back to by the capillary force of liquid-sucking core steam the most again Make a start.

Heat pipe in existing heat-pipe radiator mostly is individual tubes, i.e. the shell of every pipe is closing shell, Coolant in every pipe works alone, and when heat source temperature skewness, can produce such phenomenon: Some heat pipe is near due to distance thermal source, and heat dissipation capacity is big and temperature is too high；Some heat pipe is remote due to distance thermal source, Heat dissipation capacity is few and temperature is low, so that the heat-sinking capability of heat pipe is not in full use, affects radiator Radiating effect and performance.

Earlier application " heat-pipe radiator on an empty stomach ", in Chinese patent publication No. " CN103429061A ", Providing the radiator that a kind of condenser connects with heat collector, wherein condenser is arranged at above heat collector, And communicate therewith, condenser is the fin of multiple hollow, and heat collector is also hollow structure, and is provided with There is the phase-change working substance for heat radiation.Its hollow fin is not inserted into the inside of heat collector, during impact heat transfer Between and heat transfer efficiency.

In order to improve the radiating efficiency of heat-pipe radiator, the methods using increase area of dissipation, adjacent more Arranging thermofin between radiating tube, carry out augmentation of heat transfer by thermofin, this needs reasonably to arrange Distance between lower thermofin.When upper and lower spacing of fin reduces, interfere during the heat radiation of upper and lower fin, Thus weaken the effect of fin heat transfer；When upper and lower spacing of fin is excessive, owing to area of dissipation reduces, then Radiating effect is poor, affects radiating efficiency, it is therefore desirable to radiator rationally arranges the distance between upper and lower fin.

Summary of the invention

The present invention has designed and developed a kind of heat-pipe radiator, it is possible to overcomes in existing heat-pipe radiator and respectively cools down Liquid works alone, and causes the defect that exothermic temperature is uneven.

Another object of the present invention: spacing of fin is reasonable in design up and down, improves radiating efficiency.

The technical scheme that the present invention provides is:

A kind of special-shaped heat-pipe radiator for car light, it is characterised in that including:

Pedestal, it is hollow structure, it is possible to accommodate coolant；And

Multiple radiating tubes, its underpart is inserted in described pedestal, and is fixed on base bottom, described pedestal Internal described radiating tube is provided with notch along radiating tube periphery, it is possible to make described coolant or evaporation Gas mutually flows between radiating tube.

Preferably, each described radiating tube includes tube wall and the liquid-sucking core fitted tightly with it, described pipe Guiding gutter is had, it is possible to make described coolant quickly flow back in pedestal inside wall.

Preferably, described coolant includes: at least one in water, methyl alcohol, ethanol, benzene.

Preferably, described notch is uniformly distributed along the periphery direction of described radiator.

Preferably, connect between adjacent heat radiation pipe and have the thermofin, the spacing between upper and lower fin to be:

$Y_c=\frac{{\mathrm{\λC}}_p{{\mathrm{\ΔTL}}_{eff}}^3\sin \mathrm{\θ}}{2{\mathrm{\σR}}_C^2\mathrm{\π}}$

Wherein, λ is heat transfer coefficient, C_PFor specific heat capacity, Δ T is the temperature difference between fluid and tube wall, L_eff For effective length, θ is the angle between fin and radiating tube, and σ is fin thickness, R_CFor effectively heat transfer Radius.

Beneficial effect of the present invention: multiple radiating tubes are arranged on same pedestal, and by radiating tube It is inserted into base bottom, offers notch at insertion portion, it is possible to make coolant phase between each radiating tube Flowing mutually, the heat dissipation capacity making each radiating tube is uniform, prevents radiating tube because local heat source's heat dissipation capacity temperature greatly Too high, improve heat dispersion and the radiating efficiency of radiator.Reasonably arrange between upper and lower thermofin away from From, increase area of dissipation, strengthen radiating efficiency.

Accompanying drawing explanation

Fig. 1 is the schematic appearance of the special-shaped heat-pipe radiator for car light of the present invention.

Fig. 2 is the A-A ' profile of the special-shaped heat-pipe radiator for car light of the present invention.

Detailed description of the invention

The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art's reference Specification word can be implemented according to this.

As it is shown in figure 1, the present invention provides a kind of special-shaped heat-pipe radiator for car light, including pedestal 110, It is hollow structure, and it is internally provided with coolant 130, it is possible to receives the heat of self-heat power and evaporates, And heat is taken away；Radiating tube 120, its top is enclosed construction, and includes shell 121 and tight with it The liquid-sucking core 122 of closely connected conjunction, described radiating tube 120 bottom is inserted in described pedestal 110, and is fixed on Bottom described pedestal 110；Described radiating tube 120 within described pedestal 110 is provided with along its periphery Notch 123, it is possible to make the gas of evaporation and the liquid of condensation by notch 123 between each radiating tube Flowing.

Described radiating tube 120 bottom is evaporator section, it is possible to connecting thermal source, described radiating tube 120 top is Condensation segment.The inwall of described shell 121 has guiding gutter 124, it is possible to make the coolant 130 of evaporator section Quickly flow back in pedestal 110.Coolant 130 in described radiating tube 120 can absorb the heat of evaporator section Measuring and be evaporated to gas, due to the existence of overpressure difference, coolant 130 flows to described condensation segment； Condensate liquid is after condensation segment cooling condenses, under the capillary force of liquid-sucking core 122 and the effect of guiding gutter 124, It is back to evaporator section.Described coolant is the liquid that the latent heat of vaporization is bigger, including: water, methyl alcohol, ethanol, At least one in benzene

Connecting between adjacent heat radiation pipe and have thermofin, connecting between adjacent heat radiation pipe has thermofin, when When spacing of fin reduces up and down, interfere during the heat radiation of upper and lower fin, thus weaken the effect of fin heat transfer； When upper and lower spacing of fin is excessive, owing to area of dissipation reduces, then radiating effect is poor, affects radiating efficiency, It is thus desirable to reasonably arrange spacing of fin, the spacing between upper and lower fin is:

$Y_c=\frac{{\mathrm{\λC}}_p{{\mathrm{\ΔTL}}_{eff}}^3\sin \mathrm{\θ}}{2{\mathrm{\σR}}_C^2\mathrm{\π}}$

Wherein, λ is heat transfer coefficient, C_PFor specific heat capacity, Δ T is the temperature difference between fluid and tube wall, L_eff For length of effectively dispelling the heat, θ is the angle between fin and radiating tube, and σ is fin thickness, R_CFor effectively Heat transfer radius.

When described abnormity heat pipe is started working, the coolant 130 of pedestal 110 bottom absorbs from pedestal The heat of 110 external heat sources 140 and evaporate, the gas motion evaporated is sent out at shell 121 upper T Raw food is solidifying, and by liquid-sucking core 122 and tube wall to function of environment heat emission, liquid-sucking core 122 absorption simultaneously is condensed Liquid, flow back in pedestal 110 under the effect of capillary force and under the effect of guiding gutter 124.

Owing to thermal source is scattered in the diverse location below pedestal, so the diverse location of base bottom can be heated, There is evaporation or boiling in the diverse location making the coolant in pedestal, the gas of generation can flow to not In same radiating tube, and condense heat radiation further, it is achieved thereby that preferably cooling effect.

Multiple radiating tubes are arranged on same pedestal, and radiating tube is inserted into base bottom, inserting Part offers notch, it is possible to make coolant mutually flow between each radiating tube, makes dissipating of each radiating tube Even heat, temperature is too high because local heat source's heat dissipation capacity is big to prevent radiating tube, improves the heat radiation of radiator Performance and radiating efficiency.Distance between upper and lower thermofin is reasonably set, increases area of dissipation, strengthening Radiating efficiency.

Although embodiment of the present invention are disclosed as above, but it is not restricted to specification and embodiment party Listed utilization in formula, it can be applied to various applicable the field of the invention completely, for being familiar with ability For the personnel in territory, be easily achieved other amendment, therefore without departing substantially from claim and etc. homotype Enclosing under limited universal, the present invention is not limited to specific details and shown here as the figure with description Example.

Claims (5)

1. the special-shaped heat-pipe radiator for car light, it is characterised in that including:

Pedestal, it is hollow structure, it is possible to accommodate coolant；And

Multiple radiating tubes, its underpart is inserted in described pedestal, and is fixed on base bottom, described pedestal Internal described radiating tube is provided with notch along radiating tube periphery, it is possible to make described coolant or evaporation Gas mutually flows between radiating tube.

Special-shaped heat-pipe radiator for car light the most according to claim 1, it is characterised in that every Individual described radiating tube includes tube wall and the liquid-sucking core fitted tightly with it, has guiding gutter inside described tube wall, Described coolant can be made quickly to flow back in pedestal.

Special-shaped heat-pipe radiator for car light the most according to claim 1, it is characterised in that institute State coolant to include: at least one in water, methyl alcohol, ethanol, benzene.

Special-shaped heat-pipe radiator for car light the most according to claim 1, it is characterised in that institute State notch to be uniformly distributed along the periphery direction of described radiator.

Special-shaped heat-pipe radiator for car light the most according to claim 1, it is characterised in that phase Connecting between adjacent radiating tube has the thermofin, the spacing between upper and lower fin to be:

$Y_c=\frac{{\mathrm{\λC}}_p{{\mathrm{\ΔTL}}_{eff}}^3\sin \mathrm{\θ}}{2{\mathrm{\σR}}_C^2\mathrm{\π}}$

Wherein, λ is heat transfer coefficient, C_PFor specific heat capacity, Δ T is the temperature difference between fluid and tube wall, L_eff For effective length, θ is the angle between fin and radiating tube, and σ is fin thickness, R_CFor effectively heat transfer Radius.