CN103775995A - Heat pipe radiating device for high-power light-emitting diode (LED) lighting lamp - Google Patents

Heat pipe radiating device for high-power light-emitting diode (LED) lighting lamp Download PDF

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Publication number
CN103775995A
CN103775995A CN201210398827.3A CN201210398827A CN103775995A CN 103775995 A CN103775995 A CN 103775995A CN 201210398827 A CN201210398827 A CN 201210398827A CN 103775995 A CN103775995 A CN 103775995A
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CN
China
Prior art keywords
heat
pipe
radiating
evaporimeter
led lighting
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Pending
Application number
CN201210398827.3A
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Chinese (zh)
Inventor
陈庆山
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陈庆山
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Application filed by 陈庆山 filed Critical 陈庆山
Priority to CN201210398827.3A priority Critical patent/CN103775995A/en
Publication of CN103775995A publication Critical patent/CN103775995A/en
Pending legal-status Critical Current

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Abstract

The invention provides a heat pipe radiating device for a high-power LED lighting lamp. The device comprises an evaporator (1), an evaporation coil (2), radiation fins (3) and a fixing end plate. The device is characterized in that the evaporation coil (2) is formed by multi-loop bending through two whole continuous pipes. The heat pipe radiating device is fast in heat conduction, high in temperature uniformity, good in reliability, high in radiation efficiency, light in weight, low in cost and easy to manufacture.

Description

A kind of heat-pipe radiating apparatus for high-power LED lighting fixture
Technical field
The present invention relates to thermodynamics field, relate in particular to a kind of heat-pipe radiating apparatus for high-power LED lighting fixture.
Background technology
Along with the development of LED technology, LED lighting is a kind of trend to integrated form, the development of high-power, lightness.But, the operating temperature of LED and the luminous efficiency of LED and have direct and conclusive effect service life, particularly great power LED, caloric value is large, heat is concentrated, and just makes heat dissipation problem more outstanding, if can not be in time by transfer of heat, the temperature accumulation producing can make LED junction temperature superelevation, directly has influence on light extraction efficiency and the service life of lighting.The thermal control of high-power LED lighting fixture has become the bottleneck problem of its extensive popularization and application of restriction, and conventional radiating mode can not meet its heat radiation requirement completely.Heat pipe is a kind of very phase-change heat transfer element of high thermal conductivity that has, and has good isothermal and adaptability, and it can be by amount of heat by very little cross section long-distance transmissions and without additionaling power.But due to the characteristic of conventional heat pipe self, heat-pipe radiator is often undesirable in high-power LED lamp application aspect result of use, subject matter is that the layout of area of dissipation is difficult to the effect that reaches good, makes heat-pipe radiator be subject to the restriction of version in the application aspect of high-power LED lighting fixture., often there is the factor that some can not reasonably optimizing in the high-power LED lighting fixture heat-pipe radiating apparatus being commercially available, the volume and weight of the hot column type heat pipe radiator of heronsbill of die casting aluminium moulding is too large; Be fitted with aluminium section bar finned heat pipe radiator that heat pipe puts up a bridge not only volume and weight cannot optimize, and due to the blocking of section bar substrate, lack permeability, air cannot be in heat-delivery surface Rational flow, heat dispersion is poor; There is too the problem of this respect in flat plate heat tube radiator; The heat-pipe radiator permeability of wearing the moulding of fin expand tube with " U " type pipe box is good, heat-sinking capability is strong, but need could form with the sealing of more " U " type elbow welding the heat pipe circuit that entirety is communicated with, a large amount of " U " type elbow welding ports reduces the reliability of overall loop hot-pipe system, the life-span of heat-pipe radiating apparatus is easily caused risk, and welding difficulty is large, manufacturing process complexity.
Summary of the invention:
The invention provides a kind of heat-pipe radiating apparatus for high-power LED lighting fixture, comprising: evaporimeter 1, evaporation coil 2, radiating fin 3, fixed charge method end plate 4; Described evaporation coil 2 is made through the bending of multiple tracks loop by two continuous tubing of whole piece, and the setting of double heat conduction pipeline obviously increases heat output and heat transfer area, and exchange capability of heat strengthens.
The little fin design that described radiating fin 3 is regular geometric shapes, has polygon effect, can effectively increase the area of dissipation of unit volume; Fin dispersed arrangement arrangement can change lamina air flow runner, strengthens air permeability, and the flow field environment that makes to dispel the heat changes, and heat dispersion is significantly improved and enhanced.
In the evaporimeter cavity of described evaporimeter 1, be provided with micro-groove capillary structure, can increase condensation working medium antigravity conveying capacity, maintenance work medium rationally circulates normally, and orientation angles when adaptating lighting lamp installation changes.
Described evaporation coil 2 is manufactured and is formed by the continuous tubing of whole piece, the curved end of evaporation coil does not need the sealing of " U " type elbow to connect, can realize whole piece heat conduction coil pipe welding, effectively reduce process costs and welding difficulty, and can avoid weld bond too much to produce weak link, the security reliability of heat-pipe radiating apparatus is improved significantly.The evaporation coil of whole piece can extend with the variation expansion of heat flow density, and area of dissipation can change arbitrarily, can rationally meet heat radiation requirement, can realize again the reasonably optimizing of heat dispersion and economic performance.
Compared with prior art, high-power LED lighting fixture heat-pipe radiating apparatus provided by the invention, compact conformation, heat dissipation capacity is large, and permeability is good, and reliability is strong, and radiating efficiency is high.And lightweight, cost is low, make easily.
Accompanying drawing explanation
Fig. 1 is the elevational schematic view for high-power LED lighting fixture heat-pipe radiating apparatus provided by the invention.
Fig. 2 is the cross section structure schematic diagram for high-power LED lighting fixture heat-pipe radiating apparatus evaporimeter provided by the invention.
Fig. 3 is the fixed dam figure of high-power LED lighting fixture heat-pipe radiating apparatus provided by the invention.
The specific embodiment
Below in conjunction with accompanying drawing, high-power LED lighting fixture heat-pipe radiating apparatus provided by the invention is described.
As shown in Figure 1, evaporation coil 2 has the continuous tubing of whole piece to be made through the bending of multiple tracks loop; The little fin that radiating fin 3 is regular geometric shapes, dispersed arrangement is arranged, is closely fixed on the evaporation coil 2 of multiple tracks loop bending.
As shown in Figure 2, in evaporimeter 1 cavity, be provided with micro-groove capillary structure.
As shown in Figure 3, on fixed dam 4, be provided with longitudinal perforate and lateral opening.
As shown in figures 1 and 3, on evaporimeter 1, there are venthole and liquid return hole, on evaporation coil 2, have the admission mouth of pipe and liquid back pipe mouth; Venthole on the admission mouth of pipe and evaporimeter 1 on evaporation coil 2 is by being welded together; Liquid return hole on liquid back pipe mouth and evaporimeter 1 on evaporation coil 2 is by being welded together; On fixed charge method end plate 4, be provided with longitudinal perforate and lateral opening, longitudinally perforate is corresponding with the bending position of evaporation coil 2 with lateral opening, be arranged on the bending termination of evaporation coil 2, parallel with radiating fin 3, for being connected and fixed of heat abstractor moulding and heat abstractor and lamp outer casing; Evaporimeter 1 is processed by aluminium section bar, and radiating fin 3 is formed by flake aluminum punching press, and fixed charge method end plate 4 is by aluminium sheet punch forming.
While using high-power LED lighting fixture heat-pipe radiating apparatus provided by the invention, for reducing thermal resistance, the temperature-uniforming plate heat-absorbent surface of evaporimeter 1 is coated with heat-conducting silicone grease, chip and evaporimeter temperature-uniforming plate heat-absorbent surface are combined closely, heat is by the conduction of evaporimeter 1 temperature-uniforming plate, liquid working substance in evaporimeter cavity is subject to thermal evaporation to be converted to gas, gas rises along the evaporation coil 2 being supported by fixed charge method end plate 4, in evaporation coil, form saturated vapor density space, dispel the heat through radiating fin 3, gas condensation is converted to liquid, rely on the low side position of Action of Gravity Field natural back flow to evaporimeter 1, then by liquid-sucking core and liquid in conjunction with the capillary suction force effect producing, overcome gravitational resistance, fill to inhale and infiltrate the liquid sucting core structure arriving in evaporimeter 1 cavity, continue to be subject to thermal evaporation, form reciprocation cycle, realize Rational flow and the heat transfer process of heat-conducting work medium.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of making within the spirit and principles in the present invention, be equal to replace and improve, within all should being included in protection scope of the present invention.

Claims (5)

1. for a heat-pipe radiating apparatus for high-power LED lighting fixture, comprising: evaporimeter (1), evaporation coil (2), radiating fin (3), fixed charge method end plate (4); It is characterized in that, described evaporation coil (2) is made through the bending of multiple tracks loop by two continuous tubing of whole piece.
2. according to a kind of heat-pipe radiating apparatus for high-power LED lighting fixture described in claims 1, it is characterized in that, described evaporimeter (1) is made up of temperature-uniforming plate and evaporimeter cavity, is provided with micro-groove capillary structure in evaporimeter cavity.
3. according to a kind of heat-pipe radiating apparatus for high-power LED lighting fixture described in claims 1, it is characterized in that, the little fin that described radiating fin (3) is regular geometric shapes, dispersed arrangement is arranged, is closely fixed on evaporation coil (2).
4. according to a kind of heat-pipe radiating apparatus for high-power LED lighting fixture described in claims 1, it is characterized in that, on described fixed dam (4), be provided with longitudinal perforate and the lateral opening of comparable size.
5. according to a kind of heat-pipe radiating apparatus for high-power LED lighting fixture described in claims 1 and 2, it is characterized in that, described evaporimeter (1) also comprises venthole and liquid return hole, described evaporation coil (2) also comprises the admission mouth of pipe and liquid back pipe mouth, described venthole is connected with the described admission mouth of pipe, and described liquid return hole is connected with described liquid back pipe mouth.
CN201210398827.3A 2012-10-19 2012-10-19 Heat pipe radiating device for high-power light-emitting diode (LED) lighting lamp Pending CN103775995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210398827.3A CN103775995A (en) 2012-10-19 2012-10-19 Heat pipe radiating device for high-power light-emitting diode (LED) lighting lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210398827.3A CN103775995A (en) 2012-10-19 2012-10-19 Heat pipe radiating device for high-power light-emitting diode (LED) lighting lamp

Publications (1)

Publication Number Publication Date
CN103775995A true CN103775995A (en) 2014-05-07

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Application Number Title Priority Date Filing Date
CN201210398827.3A Pending CN103775995A (en) 2012-10-19 2012-10-19 Heat pipe radiating device for high-power light-emitting diode (LED) lighting lamp

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CN (1) CN103775995A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235792A (en) * 2013-06-07 2014-12-24 陈庆山 A phase transition radiator for a high power LED lighting lamp
CN106439756A (en) * 2016-10-26 2017-02-22 广东合新材料研究院有限公司 S-shaped loop heat pipe radiator for LED

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104235792A (en) * 2013-06-07 2014-12-24 陈庆山 A phase transition radiator for a high power LED lighting lamp
CN106439756A (en) * 2016-10-26 2017-02-22 广东合新材料研究院有限公司 S-shaped loop heat pipe radiator for LED

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Application publication date: 20140507