Round tube type heat tube nest radiator for high power LED cooling

Abstract

The present invention discloses a round tube type heat tube nest radiator for high power LED cooling. The radiator is basically characterized by being divided into two parts: a heat conducting block part and a heat tube nest radiating fin part. A slender round tube type heat tube nest in externally inserted in the heat conducting block part, and the two parts are fitted together in use. Round tube type heat tubes are internally filled with a granular shaped solid-liquid phase change material. The granular material is a composite of a spherical phase change thermal storage material and an exterior thin shell coating material. The spherical phase change thermal storage material is low viscosity paraffin having a melting point temperature within a range of 50 DEG C to 80 DEG C. The thin shell coating material is high density polyethylene having a melting point about 120 DEG C to 140 DEG C. The heat conducting block is integrated with a substrate. Graphite and aluminum may be used as the heat conducting block. Oxide treatment is performed on surfaces of the heat conducting block and the radiating heat tube nest, and combined radiation and convection heat dissipation may be achieved. The round tube type heat tube nest radiator for high power LED cooling is compact in structure, convenient to manufacture, low in cost and small in weight, has a thermal energy storage function with high heat dissipation efficiency and good temperature uniformity.

Description

technical field [0001] The invention relates to the cooling of electronic and optical devices, in particular to a heat pipe group radiator for high-power LED heat dissipation. Background technique [0002] At present, LED has been widely used in the fields of image display, signal indication and lighting, and has become a hot spot in the development of today's lighting technology. Compared with traditional incandescent lamps and fluorescent lamps, LED has the advantages of small size, low heat generation, low power consumption, fast response, shock resistance, high brightness, and no pollution. The development potential in the lighting market is worth looking forward to, and it is expected to Become a great potential commodity to replace traditional lighting fixtures. Different from the light-emitting mechanism of traditional lighting sources such as incandescent lamps and fluorescent lamps, LEDs are electroluminescent devices, and their heat cannot be radiated and dissipat...

AI Technical Summary

Problems solved by technology

2. At present, the radiators are equipped with ribs or fins on the heat conduction block or the condensation part of the heat pipe. The efficiency of the ribs of the metal fins is low, and a large area of ​​heat dissipation fins is required.

3. For the aluminum block radiator, the heat conduction block part and the heat dissipation fin are integrated, which is bulky and heavy and cannot be disassembled

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