CN202132882U

CN202132882U - A cooling module for high-power LED lamps

Info

Publication number: CN202132882U
Application number: CN201120064202U
Authority: CN
Inventors: 陈淑英
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-11
Filing date: 2011-03-11
Publication date: 2012-02-01
Anticipated expiration: 2021-03-11

Abstract

The utility model relates to a heat radiation module for high-power LED lamp, including high-power LED lamp, heat pipe, working medium, the heat pipe is for being equipped with the evaporimeter, circulating pipe, condenser, compensation room, the return circuit heat pipe of catheter, and the heat source back at high-power LED lamp is hugged closely to the evaporimeter bottom surface of return circuit heat pipe, through the base plate zonulae occludens of four-jaw cutting ferrule with the LED lamp, is equipped with capillary structure in the evaporimeter, and a whole set of return circuit heat pipe is taken out into the vacuum to be filled with appropriate amount of working medium, the condenser is the fin of. The utility model discloses the device has characteristics such as the radiating efficiency is high, the temperature uniformity is good, compact structure, processing is convenient, the thermal resistance is little, light in weight, with low costs, energy-conserving effect is showing, can effectively reduce the base plate temperature of LED lamp, solves the heat dissipation problem of high-power LED lamp, prolongs the life of LED lamp.

Description

A kind of radiating module that is used for high-powered LED lamp

Technical field

The utility model relates to a kind of heat radiation device for loop heat pipe, particularly relates to a kind of radiating module that is applied to high-powered LED lamp efficient, energy-conservation, simple in structure that has, and belongs to LED lighting engineering application.

Background technology

The LED semiconductor lighting be after incandescent lamp, fluorescent lamp, rare gas lamp the 4th generation electric light source, have advantages such as efficient height, life-span length, energy-conserving and environment-protective, be the industry star of following lighting field.Along with the continuous progress of LED manufacturing technology and the Application and Development of new material, the white light LEDs energy consumption is merely 1/8 of incandescent lamp, 1/2 of fluorescent lamp, and can reach more than 30,000 hours its service life.LED is as illumination light source; Have only the electric energy of 10%-20% to be converted into luminous energy in its input power, the electric energy of remaining 80%-90% all is converted into heat energy, concentrates in the very little chip of size; The high-power LED chip of making at present that is used to throw light on, its heat flow density surpasses 100W/cm ², chip temperature is too high, will reduce the performance of LED, shortens the service life of LED, quickens the light decay of LED, influences the reliability and stability of LED.Therefore, heat dissipation problem is one of major technique bottleneck of being faced when applying of great power LED.

At present, the method that generally adopts both at home and abroad is through changing the LED baseplate material, adding radiating fin or practical general heat pipe and take away the heat dissipation problem that the method for heat attempts to solve LED.But because great power LED is used for occasions such as illumination, the control of cost is extremely important, and the compactedness of light fixture is arranged and do not allowed to use large-area section bar fin simultaneously, and the method that adds radiating fin often can not satisfy the heat radiation needs of high-powered LED lamp.The phase-change heat transfer technology is to solve the main developing direction that high heat flux conducts heat, and heat pipe is to utilize the technology that phase transformation is strengthened changes heat.Yet traditional heat pipe is owing to be vapour-liquid people having a common goal, and heat pipe is in case crooked, and its heat transfer property just falls sharply, and in the actual application, in order to deal with the moulding needs, heat pipe must be crooked, so traditional heat pipe can not effectively solve the heat dissipation problem of high-powered LED lamp.

Existing loop heat pipe technology is except the advantage with conventional heat pipe; Also have the characteristics that under the situation of the little temperature difference, long distance, to transmit great amount of heat; Being a kind of advanced more phase-change heat transfer technology, is the main developing direction of high heat flux heat transfer from now on.But, present loop heat pipe technology directly be applied in run in the heat radiation of high-powered LED lamp manufacturing cost height, capillary pipe structure too complicated, start shortcomings such as difficulty, gravity function influence are obvious, be unfavorable for the marketization of high-powered LED lamp.

The utility model content

The utility model is intended to solve effectively the major technique bottleneck of the above-mentioned obstruction loop heat pipe technical application of mentioning in the high-power LED illumination field, and a kind of radiating module that is applied to high-powered LED lamp efficient, energy-conservation, simple in structure that has is provided.

In order to address the above problem, the utility model adopts technical scheme:

A kind of radiating module that is used for high-powered LED lamp; Comprise high-powered LED lamp (1), heat pipe, working medium (7); It is characterized in that; Described heat pipe is for to be provided with the loop heat pipe that is provided with capillary structure, circulation pipe (3), condenser (4), compensated chamber (5), catheter (6) in evaporimeter (2), the evaporator chamber, and the evaporimeter of loop heat pipe (2) bottom surface is close to the thermal source back side of high-powered LED lamp (1), closely is connected through the substrate of four paws cutting ferrule (9) with LED lamp (1).

The sender property outlet of described evaporimeter (2) is communicated with through circulation pipe (3) with the working medium inlet of condenser (4), and the sender property outlet of described condenser (4) is connected through circulation pipe (3) with the working medium inlet of compensated chamber (5); Described evaporimeter (2) top is provided with compensated chamber (5), and compensated chamber (5) are used to hold working medium (7) and are communicated with the working medium inlet of evaporimeter (2) through catheter (6).

Described evaporimeter (2) is dull and stereotyped cavity structure, and its cross sectional shape can be arranged to square, rectangle or circle according to the substrate shape of LED lamp (1), and material is the metal material of high thermal conductivity.

Said capillary structure (8) is arranged in the cavity of evaporimeter (2).

Described evaporimeter (2) and circulation pipe (3), catheter (6) are through being welded to connect, and described compensated chamber (5) and circulation pipe (3), catheter (6) are through being welded to connect.

The height of described four paws cutting ferrule (9) equals the distance of bottom surface end face of (5) to the compensated chamber of evaporimeter (2), and its material is the not good heat conducting material of rigidity.

Described condenser (4) is the fin of appropriate size, and its material is the metal material of high thermal conductivity.

With respect to prior art, the utlity model has following advantage and advantageous effects:

1, the utility model is provided for the radiating module of high-powered LED lamp, through the evaporimeter (2) of flat-plate loop heat pipe is separated with compensated chamber (5), avoids the working medium (7) of (5) in the compensated chamber to undergo phase transition, and can effectively strengthen the stability of loop heat pipe.When the substrate temperature of LED lamp (1) raise suddenly, the leakage dorsad of evaporimeter (2) heat also can jump with limit wall heat conduction.At this moment, because compensated chamber (5) only is communicated with through the less catheter of caliber (6) with evaporimeter (2), the heat that directly drains in the compensated chamber (5) from evaporimeter (2) is considerably less, and compensated chamber (5) interior working medium (7) does not undergo phase transition.Guarantee that the interior working medium (7) in compensated chamber (5) is stable, being that loop heat pipe is normal starts and the key of moving.

2, in the loop heat pipe radiating module that the utility model provided, the condenser pipe interface is few, and flow regime is improved, and the temperature homogeneity of entire heat dissipation module improves, and radiating efficiency is high.

3, the radiating module that provides of the utility model, compact conformation, simple, easy for installation, appearance looks elegant can solve the heat dissipation problem of high-powered LED lamp in multiple application.

The operation principle of the utility model is: the bottom surface of evaporimeter (2) directly is attached on the substrate of LED lamp (1); The heat that LED lamp (1) produces is delivered to evaporimeter (2); Evaporimeter (2) is when being heated, and its inner capillary structure (8) also is heated, and the working medium (7) in the capillary structure (8) just can flash to gas; And through the steam conduit on the capillary structure (8) along circulation pipe (3) to condenser (4), take away a large amount of heats simultaneously; In condenser (4), gas is condensed into working medium (7), rejects heat on the fin of (4) on the condenser, and fin contacts with extraneous air, and the free convection through outside air is discharged into the external world with the heat on the fin; The capillary force of capillary structure (8) makes working medium (7) be back to compensated chamber (5) along circulation pipe (3), and arrives capillary structure (8) through catheter (6).So form the flow circuit of a working medium (7) and the transmittance process of heat.

Description of drawings

Fig. 1 is a kind of structural representation that is used for the radiating module of high-powered LED lamp of the utility model

Fig. 2 is a kind of outside drawing that is used for the radiating module of high-powered LED lamp of the utility model

The structure that sequence number is guided in the legend is following:

1-high-powered LED lamp, 2-evaporimeter, 3-circulation pipe, 4-condenser, 5-compensated chamber, 6-catheter, 7-working medium, 8-capillary structure, 9-four paws cutting ferrule.

The specific embodiment:

Like Fig. 1, shown in Figure 2, a kind of radiating module that is used for high-powered LED lamp comprises high-powered LED lamp (1), heat pipe, working medium (7).Heat pipe is for being provided with the loop heat pipe of evaporimeter (2), circulation pipe (3), condenser (4), compensated chamber (5), catheter (6).The evaporimeter of loop heat pipe (2) is arranged on the thermal source back side of high-powered LED lamp (1), and the bottom surface of evaporimeter (2) directly is attached to the substrate back of high-powered LED lamp (1).The sender property outlet of evaporimeter (2) is communicated with through circulation pipe (3) with the working medium inlet of condenser (4), and the sender property outlet of condenser (4) is connected through circulation pipe (3) with the working medium inlet of compensated chamber (5).Evaporimeter (2) top is provided with compensated chamber (5), and compensated chamber (5) are used to hold working medium (7) and are communicated with the working medium inlet of evaporimeter (2) through catheter (6).Evaporimeter (2) is dull and stereotyped cavity structure, is provided with capillary structure (8) in the cavity, and its cross sectional shape can be arranged to square, rectangle or circle according to the substrate shape of LED lamp (1), and material is the metal material of high thermal conductivity.Evaporimeter (2) and circulation pipe (3), catheter (6) are through being welded to connect, and compensated chamber (5) and circulation pipe (3), catheter (6) are through being welded to connect.Condenser (4) is the fin of appropriate size, and its material is the metal material of high thermal conductivity.The height of four paws cutting ferrule (9) equals the distance of bottom surface end face of (5) to the compensated chamber of evaporimeter (2), and its material is the not good heat conducting material of rigidity.

Claims

1. A cooling module for high-power LED lamps, comprising high-power LED lamps (1), heat pipes, working medium (7), characterized in that the heat pipes are provided with evaporators (2), evaporators The cavity is provided with capillary structure (8), circulation pipe (3), condenser (4), compensation chamber (5), loop heat pipe of catheter (6), and the bottom surface of the evaporator (2) of the loop heat pipe is close to the The back of the heat source of the high-power LED lamp (1) is tightly connected to the substrate of the LED lamp (1) through a four-claw ferrule (9).

2. The heat dissipation module of the high-power LED lamp according to claim 1, characterized in that, the working medium outlet of the evaporator (2) communicates with the working medium inlet of the condenser (4) through a circulation pipe (3) , the working medium outlet of the condenser (4) is connected with the working medium inlet of the compensation chamber (5) through a circulation pipe (3); the above described evaporator (2) is provided with a compensation chamber (5), and the compensation chamber (5) is used to accommodate the working fluid (7) and communicates with the working fluid inlet of the evaporator (2) through the guide tube (6).

3. The heat dissipation module of high-power LED lamp according to claim 1, characterized in that, the evaporator (2) is a flat cavity structure, and its cross-sectional shape can be set according to the shape of the substrate of the LED lamp (1). Square, rectangular or round, made of metal with high thermal conductivity.

4. The heat dissipation module of the high-power LED lamp according to claim 1, characterized in that, the capillary structure (8) is arranged in the cavity of the evaporator (2).

5. The heat dissipation module of the high-power LED lamp according to claim 1, characterized in that, the evaporator (2) is connected to the circulation pipe (3) and the liquid guide pipe (6) by welding, and the compensation The chamber (5) is connected with the circulating pipe (3) and the catheter (6) by welding.

6. The heat dissipation module of a high-power LED lamp according to claim 1, characterized in that, the condenser (4) is a fin of an appropriate size, and its material is a metal material with high thermal conductivity.

7. The heat dissipation module of high-power LED lamp according to claim 1, characterized in that, the height of the four-claw ferrule (9) is equal to the bottom surface of the evaporator (2) to the top surface of the compensation chamber (5) The distance, the material is rigid poor thermal conductivity material. the