CN202182438U - Heat pipe cooling device with centrifugal type condenser used for LED street lamp - Google Patents

Heat pipe cooling device with centrifugal type condenser used for LED street lamp Download PDF

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Publication number
CN202182438U
CN202182438U CN2011202806550U CN201120280655U CN202182438U CN 202182438 U CN202182438 U CN 202182438U CN 2011202806550 U CN2011202806550 U CN 2011202806550U CN 201120280655 U CN201120280655 U CN 201120280655U CN 202182438 U CN202182438 U CN 202182438U
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China
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pipe
heat
centrifugal
substrate
air inlet
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Expired - Fee Related
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CN2011202806550U
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Chinese (zh)
Inventor
王翠萍
戴金福
丁一涵
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SHENYANG LIJING PHOTOELECTRONICS CO Ltd
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SHENYANG LIJING PHOTOELECTRONICS CO Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting

Abstract

A heat pipe cooling device with a centrifugal type condenser used for an LED (Light Emitting Diode) street lamp fundamentally solves the problem that the present heat pipe cooling device can not give full play to a heat dissipation effect as is limited by a structure thereof. The technical scheme of the utility model is characterized in that: the heat pipe cooling device comprises the centrifugal type condenser; wherein the centrifugal type condenser comprises a circle tubular main body, an upper end cover, a lower end cover, and cooling fins uniformly distributed on an outer wall of the circle tubular main body; an inner part of a substrate is provided with a cooling cavity, the cooling cavity is connected with an upper end of the centrifugal type condenser through an air inlet pipe, the air inlet pipe is connected to an inner wall of the circle tubular main body of the centrifugal type condenser along a tangential direction, an included angle between a center line of an end of the air inlet pipe, which is connected with the circle tubular main body, and a horizontal plane is 0 to 15 degrees, a lower end of the centrifugal type condenser is connected with the cooling cavity by utilizing a liquid returning pipe; the air inlet pipe, the liquid returning pipe and the centrifugal type condenser are all sealedly connected with the cooling cavity; and the cooling cavity utilizes a liquid charging pipe to vacuumize and fill working medium. The heat pipe cooling device of the utility model has the advantages of quick cooling speed, strong cooling capability, large cooling area independent of the size of a lamp housing, low cost, etc.

Description

LED street lamp with centrifugal condenser is used heat-pipe radiating apparatus
Technical field
The utility model relates to a kind of heat-pipe radiator, and particularly a kind of LED street lamp with centrifugal condenser is used heat-pipe radiating apparatus.
Background technology
Because the LED light fixture has advantages such as brightness height, environmental protection, energy-conservation, good directionality, response are fast, be considered to the substitute of conventional light source, beginning is used widely in a lot of fields.Yet LED is a photoelectric device, has only the electric energy of 15%-25% to convert luminous energy in its course of work, and remaining electric energy nearly all converts heat energy to, and the temperature of LED knot is raise.Usually the temperature of LED knot is considered to the temperature of LED.The temperature of higher LED knot produces many harmful effects to the LED light fixture: the life-span that 1, influences the LED light fixture.The life-span of LED light fixture is defined as: luminous flux attenuation is to the used time of initial luminous flux 70%.The speed of luminous flux attenuation is relevant with the temperature of LED knot, and the temperature of LED knot is high more, and the speed of luminous flux attenuation is just fast more, and the life-span of LED lamp is just short more.Conversely, the temperature of LED knot is low more, and the life-span of LED lamp is just long more; 2, influence the light output intensity of LED.When the LED junction temperature is high, LED device output light intensity will reduce gradually.3, influence the color of LED light.When the LED junction temperature is high, cause LED device emission wavelength elongated, color generation red shift.4, influence the LED luminous efficiency.When the LED junction temperature was high, the LED luminous efficiency was low.From the above: the radiating effect of LED light fixture not only influences the life-span of LED light fixture, also influences the efficient and the optical quality of LED light fixture.It is thus clear that, improve the radiator structure of LED light fixture, provide one of subject matter that the life-span is long, high-quality LED light fixture must solve.Especially the LED light fixture of those abominable relatively particular surroundings work that are not easy to keep in repair in high-altitude, open-air etc. has higher requirement to the life-span, more need dispose the better heat abstractor of radiating effect.
The characteristics of heat-pipe radiator are that heat transfer rate is fast, can rapidly the heats that thermal source produced such as electronic devices and components be spread out of rapidly, have avoided heat to gather at thermal source places such as electronic devices and components and influence the reliability of whole electronic system.Because these characteristics of heat-pipe radiator just began to be used as the heat radiation of LED light fixture, but cause the present also not by the market extensive use before its several years.Its reason is complex structure on the surface, be difficult for to make, price is high, cost performance is low, yet profound reason is to design problems such as heat radiation and the manufacturing process of the heat exchange do not resolved between heat-pipe radiator and the environment and power supply.
The heat-pipe radiator of LED light fixture is three kinds of aluminium alloy casting, aluminium alloy extruded and aluminium alloy punching press fins mostly in the market.The above two weight is big, cost is high, self-cleaning is poor, dust fall influence heat radiation.Thermal resistance between latter's radiating fin and the heat pipe is big, can not give full play to the performance of heat pipe.LED light fixture in the market, the independent auto-radiating of power supply separates with the cooling system of LED light fixture, and the heat-sinking capability of power supply a little less than, and be installed in the lamp housing, the original very low heat-sinking capability of power supply is further weakened.The power supply temperature is high, and the life-span sharp fall of its electric capacity and magnetic element also can influence the life-span of LED light fixture.
According to statistics, the present main cause that reduces of the life-span of LED street lamp, half is that the temperature of LED knot is high, second half is that electric capacity, the magnetic element of power supply lost efficacy because of temperature is high and cause.Therefore life-span and the optical quality in order to improve the LED light fixture just must be improved the radiator structure of LED light fixture.
Summary of the invention
The purpose of the utility model is to use heat-pipe radiating apparatus for the LED street lamp that provides a kind of structural design more reasonably to have centrifugal condenser.Fundamentally solve existing heat-pipe radiator and receive structural limitations can not give full play to the problem of radiating effect, have the temperature that reduces LED knot and power supply, slow down its light decay speed, thereby improve life-span, the quality of LED light fixture and the advantage that reduces cost.
The technical scheme of the utility model is: this LED street lamp with centrifugal condenser is used heat-pipe radiating apparatus, comprises substrate, and its technical essential is: also comprise centrifugal condenser;
Said centrifugal condenser comprises pipe shape main body, the upper and lower end cap of vertical placement and is distributed on the radiating fin that radially distributes on the said pipe shape main body outer wall;
Said substrate set inside heat radiation chamber; Said heat radiation chamber is connected with said centrifugal upper end of condenser through air inlet pipe; Said air inlet pipe tangentially is connected to the inwall of the pipe shape main body of said centrifugal condenser; And said air inlet pipe connects between center line and the horizontal plane of this end of said pipe shape main body and is 0～-15 ° of angle, and said centrifugal condenser lower end utilizes liquid back pipe to return to connect said heat radiation chamber;
Said air inlet pipe, liquid back pipe, centrifugal condenser and heat radiation chamber are tightly connected, and said heat radiation chamber utilizes the topping up pipe to vacuumize and filling working medium.
Said heat radiation chamber can be to form by being arranged on said substrate inner vertical passage and the crisscross perforation of interconnection.
Also can be in the heat radiation chamber some partitions to be set to form some heat dissipation channels.
In order to make radiating effect more remarkable; The upper and lower surface of said substrate is provided with the heat conductive insulating layer; Said heat conductive insulating layer is provided with printed circuit; Be welded with the components and parts of constant-current supply, control system on the printed circuit of the upper surface of said substrate, the printed circuit on the lower surface of said substrate is provided with LED.
Another kind of radiating effect better is provided with: said base lower surface is offered some bar-shaped troughs; Plug-in mounting insulated electro travel permit in the said bar-shaped trough; Be uniformly distributed with LED on the said insulated electro travel permit, the positive and negative electrode of said LED is connected on the said insulated electro travel permit, and its end that conducts heat directly is connected on the said substrate.
According to the operation principle of centrifugal condenser, said centrifugal condenser is fixed on the lamppost top of the LED street lamp that carries its weight, be higher than the substrate present position.
The radiating fin of said centrifugal condenser and pipe shape main body are one-shot forming.
More said liquid back pipe, air inlet pipe are utilized respectively to lead to take over and are connected with the heat radiation chamber of said substrate.
Said liquid back pipe, air inlet pipe are respectively aluminum pipe or the steel pipe with the outer expansion of pipe radiated rib, and respectively as the street lamp support arm that supports said substrate.
Advantage of the utility model and positive technique effect are: after the described LED street lamp of the utility model energized; Be arranged in constant-current supply, led chip work on the upper and lower plane of substrate; The heat that is sent will heated substrates working medium in the heat radiation chamber, the working substance steam that has certain pressure and carry heat is absorbed heat, seethes with excitement, is evaporated to working medium.Working substance steam under action of centrifugal force, is close to the inwall of centrifugal condenser, the motion of spinning downwards after getting into centrifugal condenser through tube connector, air inlet pipe with tangent line and downward direction.Working substance steam is in the decline process, and through the radiating fin of centrifugal condenser inwall with the heat transferred condenser, the heat on the radiating fin is through convection heat transfer' heat-transfer by convection, and heat is dispersed among the environment.Lose the working substance steam of heat, be condensed into worker quality liquid.Worker quality liquid is under action of centrifugal force, and the motion of spinning is downwards got back in the heat radiation chamber of substrate through liquid back pipe, continues to participate in the heat absorption evaporation, the shuttling movement of heat release condensation.So move in circles, accomplished heat radiation work LED street lamp constant-current supply, led chip.
To sum up, the utlity model has following characteristics:
1, working substance steam is close to centrifugal condenser inwall under action of centrifugal force, and intensity of heat exchange is high between the two.
2, the motion because working substance steam is spinned in centrifugal condenser, the path is longer, and promptly working substance steam and condenser inner chamber are long time of contact, and heat exchange is more abundant each other.
3, working substance steam and condensed worker quality liquid descend in the same way; Overcome working substance steam that the general gravity heat pipe moves upward shear action to the worker quality liquid film of downward motion; The worker quality liquid decrease speed is very fast, has reduced worker quality liquid film and condenser inner surface heat exchange influence.
4, the area of dissipation of centrifugal condenser can be confirmed through adjustment condenser length, and does not receive the constraint of lamp housing size.
6, air inlet pipe, liquid back pipe are that aluminium, the steel fluorescent tube with the outer expansion of pipe radiated rib can replace lamp stand.
7, total area of dissipation is the area of dissipation and the air inlet pipe area of dissipation sum of centrifugal condenser.
Description of drawings
To combine accompanying drawing that the utility model is described further below:
Fig. 1 is the structural representation sketch of the utility model;
Fig. 2 is the G portion enlarged drawing of Fig. 1;
Fig. 3 is the A-A profile of Fig. 2;
Fig. 4 is the H portion enlarged drawing of Fig. 1;
Fig. 5 is that the B of Fig. 4 is to view;
Fig. 6 is the cross-sectional view of substrate;
Fig. 7 is the vertical view of substrate;
Fig. 8 is the structural representation of the another kind of form of substrate;
Fig. 9 is for being provided with the structural representation of LED on the substrate.
The sequence number explanation among the figure: 1 lamppost, 2 liquid back pipes, 3 substrates, 4 air inlet pipe, 5 centrifugal condensers, 6 upper end covers, 7 bottom end covers, lead to adapter, 9 pipe shape main bodys, 10 radiating fins, 11 vertical passages, 12 interconnections, 13 topping up pipes, 14 partitions, 15 insulated electro travel permits, 16LED 8 more.
To describe in detail the utility model through instance below, but following instance only is the utility model example wherein the rights protection scope of not representing the utility model and being limited.
The specific embodiment
Describe in detail according to Fig. 1-9 pair the utility model.This LED street lamp is used heat-pipe radiating apparatus, mainly is made up of substrate 3, centrifugal condenser 5, air inlet pipe 4, liquid back pipe 2 etc., and is as shown in Figure 1, wherein:
Centrifugal condenser 5 comprises pipe shape main body 9, upper and lower end cap 6,7 and is distributed on the radiating fin that radially distributes 10 on pipe shape main body 9 outer walls.Centrifugal condenser 5 is the aluminium section bar of extrusion molding, and the cross section is circular, and the outer wall of pipe shape main body 9 has the radial radiating fin 10 of even layout, radial radiating fin 10 and 9 one-shot formings of pipe shape main body.Pipe shape main body 9 upper/lower terminals of condenser are tightly connected with upper end cover 6, bottom end cover 7 respectively.According to the operation principle of centrifugal condenser, centrifugal condenser 5 vertically is placed on lamppost 1 top of the LED street lamp that carries its weight, be higher than substrate 3 present positions.Like Fig. 2, shown in 3.
Substrate 3 set inside heat radiation chamber.Specifically be that substrate 3 is plank frame, be provided with several vertical passages 11 and several interconnections 12 in the plate, and be interconnected and become crisscross inner chamber, the chamber of promptly dispelling the heat, as shown in Figure 6.Also can be some partitions 14 to be set in the heat radiation chamber form some heat dissipation channels 11, as shown in Figure 8.
The heat radiation chamber is connected with centrifugal condenser 5 upper ends through air inlet pipe 4; Air inlet pipe 4 tangentially is connected to the inwall of the pipe shape main body 9 of centrifugal condenser; And be 0～-15 ° of angle between the center line of this end of air inlet pipe 4 connection pipe shape main bodys 9 and the horizontal plane; Working substance steam tangentially is tilted to down get into pipe shape main body 9 inwalls, centrifugal condenser 5 lower ends to utilize 2 go back tos companies of liquid back pipe chamber of dispelling the heat.
Air inlet pipe 4, liquid back pipe 2, centrifugal condenser 5 and heat radiation chamber are tightly connected, and the heat radiation chamber utilizes topping up pipe 13 to vacuumize and filling working medium.More liquid back pipe 2, air inlet pipe 4 can be utilized respectively to lead to and take over 8 and be connected with the heat radiation chamber of substrate 3.Like Fig. 4, shown in 5.Simultaneously, liquid back pipe 2, air inlet pipe 4 can be respectively aluminum pipe or the steel pipe with the outer expansion of pipe radiated rib, can be respectively as the street lamp support arm of supporting substrate 3.
The layout of LED on the substrate 3 etc. mainly contains several following two kinds: the upper and lower surface of one of which, substrate 3 is provided with the heat conductive insulating layer, on the heat conductive insulating layer printed circuit is arranged.Be welded with the components and parts of constant-current supply, control system on the printed circuit of the upper surface of substrate.Printed circuit on the lower surface of substrate 3 posts led chip.Increase led chip, the components and parts of crossing current power supply, the components and parts and the conduction of the heat between the substrate 3 of control system like this, quickened the heat exchange between the components and parts of led chip, constant-current supply, the interior working medium of the heat that components and parts produced of controlling system and substrate heat radiation chamber (inner chamber).
Two, substrate 3 lower surfaces are offered some bar-shaped troughs, and plug-in mounting insulated electro travel permit 15 in the bar-shaped trough is uniformly distributed with LED16 on the insulated electro travel permit 15, and the positive and negative electrode of LED16 is connected on the insulated electro travel permit 15, and its end that conducts heat directly is connected on the substrate 3.Substrate 3 outer surfaces plating one deck nickel dam.As shown in Figure 9.The thermoelectric separated structures design of this kind is more conducive to the heat radiation of the utility model.
Total area of dissipation of the utility model is the area of dissipation and the air inlet pipe 4 area of dissipation sums of centrifugal condenser 5.And centrifugal condenser 5 area of dissipations can satisfy through the length of adjustment condenser, and do not receive the constraint of lamp housing size, and then its area of dissipation can be set as required.
To sum up, the utlity model has that radiating rate is fast, heat-sinking capability is big, cost low heat emission area does not receive characteristics such as lamp housing dimension constraint.

Claims (9)

1. the LED street lamp with centrifugal condenser is used heat-pipe radiating apparatus, comprises substrate, it is characterized in that: also comprise centrifugal condenser;
Said centrifugal condenser comprises pipe shape main body, the upper and lower end cap of vertical placement and is distributed on the radiating fin that radially distributes on the said pipe shape main body outer wall;
Said substrate set inside heat radiation chamber; Said heat radiation chamber is connected with said centrifugal upper end of condenser through air inlet pipe; Said air inlet pipe tangentially is connected to the inwall of the pipe shape main body of said centrifugal condenser; And said air inlet pipe connects between center line and the horizontal plane of this end of said pipe shape main body and is 0～-15 ° of angle, and said centrifugal condenser lower end utilizes liquid back pipe to return to connect said heat radiation chamber;
Said air inlet pipe, liquid back pipe, centrifugal condenser and heat radiation chamber are tightly connected, and said heat radiation chamber utilizes the topping up pipe to vacuumize and filling working medium.
2. the LED street lamp with centrifugal condenser according to claim 1 is used heat-pipe radiating apparatus, it is characterized in that: said heat radiation chamber forms by being arranged on said substrate inner vertical passage and the crisscross perforation of interconnection.
3. the LED street lamp with centrifugal condenser according to claim 1 is used heat-pipe radiating apparatus, it is characterized in that: in the said heat radiation chamber some partitions are set and form some heat dissipation channels.
4. the LED street lamp with centrifugal condenser according to claim 1 is used heat-pipe radiating apparatus; It is characterized in that: the upper and lower surface of said substrate is provided with the heat conductive insulating layer; Said heat conductive insulating layer is provided with printed circuit; Be welded with the components and parts of constant-current supply, control system on the printed circuit of the upper surface of said substrate, the printed circuit on the lower surface of said substrate is provided with LED.
5. the LED street lamp with centrifugal condenser according to claim 1 is used heat-pipe radiating apparatus; It is characterized in that: said base lower surface is offered some bar-shaped troughs; Plug-in mounting insulated electro travel permit in the said bar-shaped trough; Be uniformly distributed with LED on the said insulated electro travel permit, the positive and negative electrode of said LED is connected on the said insulated electro travel permit, and its end that conducts heat directly is connected on the said substrate.
6. the LED street lamp with centrifugal condenser according to claim 1 is used heat-pipe radiating apparatus, it is characterized in that: said centrifugal condenser is fixed on the lamppost top of the LED street lamp that carries its weight.
7. use heat-pipe radiating apparatus according to claim 1 or 6 described LED street lamps with centrifugal condenser, it is characterized in that: the radiating fin of said centrifugal condenser and pipe shape main body are one-shot forming.
8. the LED street lamp with centrifugal condenser according to claim 1 is used heat-pipe radiating apparatus, it is characterized in that: more said liquid back pipe, air inlet pipe are utilized respectively to lead to take over and are connected with the heat radiation chamber of said substrate.
9. use heat-pipe radiating apparatus according to claim 1 or 8 described LED street lamps with centrifugal condenser; It is characterized in that: said liquid back pipe, air inlet pipe are respectively aluminum pipe or the steel pipe with the outer expansion of pipe radiated rib, and respectively as the street lamp support arm that supports said substrate.
CN2011202806550U 2011-08-04 2011-08-04 Heat pipe cooling device with centrifugal type condenser used for LED street lamp Expired - Fee Related CN202182438U (en)

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Application Number Priority Date Filing Date Title
CN2011202806550U CN202182438U (en) 2011-08-04 2011-08-04 Heat pipe cooling device with centrifugal type condenser used for LED street lamp

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287791A (en) * 2011-08-04 2011-12-21 沈阳立晶光电有限公司 Light-emitting diode (LED) street lamp heat pipe radiating device with centrifugal condenser

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287791A (en) * 2011-08-04 2011-12-21 沈阳立晶光电有限公司 Light-emitting diode (LED) street lamp heat pipe radiating device with centrifugal condenser

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120404

Termination date: 20160804

CF01 Termination of patent right due to non-payment of annual fee