CN204438055U

CN204438055U - A kind of LED heat abstractor based on double-deck heat pipe structure

Info

Publication number: CN204438055U
Application number: CN201520015825.0U
Authority: CN
Inventors: 赖华盛; 张夏; 洪森权; 刘彦丰
Original assignee: North China Electric Power University
Current assignee: North China Electric Power University
Priority date: 2015-01-05
Filing date: 2015-01-05
Publication date: 2015-07-01
Anticipated expiration: 2025-01-05

Abstract

The utility model discloses a kind of LED heat abstractor based on double-deck heat pipe structure, this device comprises LED chip and aluminium base, double-deck heat pipe, fin.For solving the problem causing LED heat dissipation capacity greatly limited because fin area is limited, many heat pipes are fixed on aluminium base to stack into double-deck form by the utility model, and described double-deck heat pipe extends in opposite direction, and heat pipe cold junction is equipped with multiple fin.The heat that LED chip sends is delivered to both sides above LED by aluminium base and double-deck heat pipe and scatters and disappears.The utility model can significantly increase fin area, thus effectively increases the heat dissipation capacity of LED, extends LED service life, improves the working environment of LED.

Description

A kind of LED heat abstractor based on double-deck heat pipe structure

Technical field

The utility model relates to LED illumination lamp field, particularly relates to a kind of efficient LED heat abstractor.

Background technology

The luminescence of LED needs electric current to drive, and in the electric energy of input LED, only has an appointment and 15% to 25% can be converted into luminous energy, this means produce amount of heat in LED luminescence process.Nowadays, heat dissipation problem has become the key factor of restriction LED development.Along with the raising of LED power, the impact of thermal property on LED is more and more significant, not only can make sharp-decay device lifetime, also can have a strong impact on the parameters such as the wavelength of LED, power, luminous flux.

About improvement LED heat dissipation technology, trial was done by existing a lot of producer, such as adopt finned aluminium as radiator, individual layer hot pipe technique etc., but effect was not clearly.Adopt new technology, improvement LED heat dispersal situations, to promoting that the development of LED this " green energy resource " has very great meaning.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of to high power LED heat radiating device.

To achieve these goals, technical solution adopted in the utility model is: a kind of LED heat abstractor based on double-deck heat pipe structure, and its feature structure comprises: LED aluminum base plate (1), double-deck heat pipe (2) and fin (3).Many heat pipes are fixed on aluminium base to stack into double-deck form, and double-deck heat pipe extends in opposite direction, and heat pipe cold junction is equipped with multiple fin.

Each several part specific requirement is as follows:

1. the connection of pair heat pipe and aluminium base: aluminium base offers protruding square hole, heat pipe is fixed through square hole to stack form, and aluminium base and heat pipe, space between upper strata heat pipe and lower floor's heat pipe are filled by heat conductive silica gel.

2. heat pipe package material: from the viewpoint of bearing capacity and reduction thermal resistance two, heat pipe adopts seamless carbon steel tube as envelope material, and this can make the indexs such as the weight of heat pipe and cost decline to some extent; The utility model welds fin at tube surface, and the weak link of its intensity is not often in centre, but the weld at two ends, therefore shell is thinnerly optional, but should manage to strengthen at two ends weld.

3. heat pipe work fluid: analyze temperature range during LED heat radiation, Cryo Heat Tube (less than 200 DEG C) should be selected.Integrated environment temperature and chemical compatibility, working fluid selects alcohol or water.

4. fin: adopt the method for lug that heat pipe is connected with fin, heat exchange amount can be increased.Fin material selects aluminium alloy, and be characterized in low price, good heat conductivity, yield strength is high, and resistance to punching press, machine-shaping is more convenient.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the heat abstractor in the utility model is compared with the structure of direct finned on aluminium base, adopt double-deck heat pipe structure, heat being delivered to two rear flank above LED utilizes fin to dispel the heat, avoid because of aluminium base limited area, fin area is limited and the problem causing heat dissipation capacity greatly limited, thus heat dissipation capacity is strengthened greatly, be conducive to extending LED component service life, an environment being more conducive to LED work is provided.

2. the heat abstractor in the utility model, compared with individual layer heat pipe, can increase the heat exchange area of working fluid in heat pipe, thus strengthens the ability of heat pipe transferring heat.

3. the utility model is primarily of heat pipe and fin composition, and structure is simple, and produce easily, cost is lower, practical function, and therefore this device has higher practicality.

Accompanying drawing explanation

Accompanying drawing is structural representation of the present utility model.

In accompanying drawing, the list of parts representated by each label is as follows: 1, aluminium base, and 2, double-deck heat pipe, 3, fin, 4, LED chip.

Detailed description of the invention:

Known with reference to the accompanying drawings, the utility model is specifically related to a kind of LED heat abstractor, comprises aluminium base 1, double-deck heat pipe 2 and fin 3.As figure, described aluminium base 1 is Thin Disk shape, is distributed with LED chip under it, and a protruding square hole of aluminum is arranged at its top, and hole area is slightly larger than the cross-sectional area after heat pipe superposition.Described four heat pipes are superimposed as double-decker, each two up and down, in the opposite direction horizontal through aluminium base hole, and in upper strata heat pipe and lower floor's heat pipe, gap between heat pipe and aluminum hole surface, fill heat conductive silica gel fixed.Adopt protruding aluminum pore space structure, upper strata heat pipe is had with aluminium base and directly contacts, and adopt heat conductive silica gel filling space, effectively can reduce heat and be delivered to thermal resistance between the heat pipe of upper strata from aluminium base 1.Double-deck heat pipe 2 extends in opposite direction, and is bent upwards, at vertical heat pipe wall part welding multi-layer heat dissipation sheet.The heat that LED chip produces is delivered to both sides above LED by aluminium base and double-deck heat pipe, is scattered and disappeared, realize good radiating effect by fin.

The above example only have expressed a kind of embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.

Claims

1. the LED heat abstractor based on double-deck heat pipe structure, comprise aluminium base (1), double-deck heat pipe (2), fin (3), it is characterized in that: protruding square hole is arranged at aluminium base (1) top, heat pipe (2) is fixed to stack form through square hole, and aluminium base and heat pipe, space between upper strata heat pipe and lower floor's heat pipe are filled by heat conductive silica gel.

2. a kind of LED heat abstractor based on double-deck heat pipe structure according to claim 1, it is characterized in that the material that described double-deck heat pipe (2) adopts is seamless carbon steel tube, the working fluid of employing is alcohol or water.

3. a kind of LED heat abstractor based on double-deck heat pipe structure according to claim 2, is characterized in that described double-deck heat pipe extends in the opposite direction, and is fixed with multiple fin at heat pipe cold junction.