Aluminum alloy heat dissipation cavity structure containing heat accumulator for LED lamp and preparation method of aluminum alloy heat dissipation cavity structure

A technology of LED lights and aluminum alloys, applied in metal processing equipment, lighting and heating equipment, manufacturing tools, etc., can solve the problems of low phase transition temperature, inability to dissipate heat in time, and poor latent heat storage capacity, etc., to reduce thermal resistance , good heat conduction and heat storage phase change performance, and the effect of prolonging the service life

Pending Publication Date: 2022-02-18
SHENZHEN LIANYU PHOTOELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the phase change temperature range of the phase change material compounded by paraffin, silver indium antimony tellurium, and calcium chloride hexahydrate is between 20-60°C. The phase change temperature is too low, and the latent heat storage capacity is poor. If When used in high-power LED lamps, it is easy to cause a large amount of heat not to be absorbed by the phase change material, and it cannot be dissipated in time, so it is easy to have a negative effect

Method used

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  • Aluminum alloy heat dissipation cavity structure containing heat accumulator for LED lamp and preparation method of aluminum alloy heat dissipation cavity structure
  • Aluminum alloy heat dissipation cavity structure containing heat accumulator for LED lamp and preparation method of aluminum alloy heat dissipation cavity structure
  • Aluminum alloy heat dissipation cavity structure containing heat accumulator for LED lamp and preparation method of aluminum alloy heat dissipation cavity structure

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preparation example Construction

[0060] The invention also discloses a method for preparing an aluminum alloy heat dissipation cavity structure containing a heat storage body for an LED lamp, including an aluminum alloy heat dissipation cavity containing a heat storage body for an LED lamp as described in any one of claims 1 to 7 structure, the steps are as follows:

[0061] 1) Using the sand casting process to design the casting mold;

[0062] 2) Inject the aluminum alloy high-temperature melt into the casting mold;

[0063] 3) Take out half of the cast aluminum alloy cooling cavity structure 3;

[0064] 4) Premixing the phenolic resin and expanded graphite with a mass count ratio of 1:1, wherein the phenolic resin is a thermoplastic phenolic resin, and the expanded graphite particle size is greater than 0.045mm and less than 5mm;

[0065] 5) Add the mixture to the three-roll mill for stripping and mixing, and circulate stripping and mixing for 10-16 times to obtain a graphene sheet / phenolic resin mixture;...

Embodiment 1

[0081] The preparation method of the aluminum alloy heat dissipation cavity structure containing the heat storage body for the LED lamp:

[0082] 1) Using the sand casting process to design the casting mold;

[0083] 2) Inject the aluminum alloy high-temperature melt into the casting mold;

[0084] 3) Take out half of the casted aluminum alloy cooling cavity 3 structure;

[0085] 4) Premixing the phenolic resin and expanded graphite with a mass count ratio of 1:1, wherein the phenolic resin is a thermoplastic phenolic resin, and the expanded graphite particle size is greater than 0.045mm and less than 5mm;

[0086] 5) Add the mixture to the three-roll mill for stripping and mixing, and circulate stripping and mixing for 10-16 times to obtain a graphene sheet / phenolic resin mixture;

[0087] 6) then powdery 10wt% EVA hot-melt wax, 20wt% hard wax, 40wt% microcrystalline wax, 10wt% polyethylene glycol are put into the three-roll grinder, mixed with 20wt% graphene sheet / phenolic...

Embodiment 2

[0095] The preparation method of the aluminum alloy heat dissipation cavity structure containing the heat storage body for the LED lamp:

[0096] 1) Using the sand casting process to design the casting mold;

[0097] 2) Inject the aluminum alloy high-temperature melt into the casting mold;

[0098] 3) Take out half of the cast aluminum alloy cooling cavity structure 3;

[0099] 4) Premixing the phenolic resin and expanded graphite with a mass count ratio of 1:1, wherein the phenolic resin is a thermoplastic phenolic resin, and the expanded graphite particle size is greater than 0.045mm and less than 5mm;

[0100] 5) Add the mixture to the three-roll mill for stripping and mixing, and circulate stripping and mixing for 10-16 times to obtain a graphene sheet / phenolic resin mixture;

[0101] 6) Put powdered 8wt% EVA hot melt wax, 15wt% hard wax, 45wt% microcrystalline wax, 10wt% polyethylene glycol into the three-roll mill, mix with 22wt% graphene sheet / phenolic resin mixture ...

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Abstract

The invention discloses an aluminum alloy heat dissipation cavity structure containing a heat accumulator for an LED lamp, the aluminum alloy heat dissipation cavity structure comprises a first cavity body, a structure wall and a plurality of fins, the first cavity body is filled with foam aluminum alloy and a first heat accumulation phase change material, each fin comprises a fin structure wall and a second cavity body, the second cavity body is filled with a second heat accumulation phase change material, The first heat accumulation phase change material is prepared by mixing a graphene sheet / phenolic resin mixture obtained by grinding and stripping expanded graphite through three rollers with hot melt wax, hard wax, microcrystalline wax, polyethylene glycol and other raw materials, and the second heat accumulation phase change material is prepared from soft wax, medium-melting-point wax, hard wax and other raw materials through a heating, melting and mixing method. The first heat accumulation phase change material and the second heat accumulation phase change material are injected into the aluminum alloy heat dissipation cavity structure, nano agglomeration in the heat accumulation phase change materials can be effectively restrained, the good heat storage phase-change performance of the heat accumulation phase change materials is guaranteed, the working temperature of the LED lamp can be effectively reduced, and the service life of the LED lamp can be effectively prolonged.

Description

technical field [0001] The invention relates to the technical field of LED heat dissipation materials, in particular to an aluminum alloy heat dissipation cavity structure containing a heat storage body for an LED lamp and a preparation method thereof. Background technique [0002] LED is a semiconductor called "Light Emitting Diode", the name is taken from the initials of "Light Emitting Diode". LEDs are composed of N-type semiconductors with more electrons and P-type semiconductors with more holes. When the LED is working, the electrons and holes will move and recombine at the junction, and it is the recombination energy that becomes light and emits a large amount of heat at the same time. Like traditional light sources, semiconductor light-emitting diodes (LEDs) also generate heat during operation, the amount of which depends on the overall luminous efficiency. Under the action of external electric energy, the radiative recombination of electrons and holes produces elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V29/89F21V29/90F21V29/70F21V29/76F21V29/51F21V29/71F21V29/503B22C9/02B22C9/26F21Y115/10
CPCF21V29/89F21V29/90F21V29/70F21V29/76F21V29/51F21V29/71F21V29/503B22C9/02B22C9/26F21Y2115/10
Inventor 徐建勇黄军同王志怀
Owner SHENZHEN LIANYU PHOTOELECTRIC CO LTD
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