At present, most of the UV curing light sources in the printing industry are still traditional gas discharge lamps. The traditional lamps contain heavy metal contaminants, which consume high energy and have a service life of only 800 to 3000 hours, which requires frequent replacement. The emergence of UVLEDs can solve these problems very well. UVLED has many advantages, its life can reach 20,000 to 30,000 hours, environmental protection and pollution-free, low energy consumption, no heat radiation, and the volume is only 1/5 of the traditional curing machine. Due to these characteristics, UVLED will cause one in the UV printing industry. Field light source revolution.
However, there are still some difficulties in the promotion of UVLEDs on a large scale. The reasons are as follows:
1 low power UVLED optical power density is not enough, can not make UV ink fast curing;
2 the cost is too high;
3 high-power UVLEDs have insufficient heat dissipation.
Now study a non-water-cooled and movable heat dissipation system suitable for high power density. The heat dissipation system combines semiconductor refrigeration technology and forced convection heat dissipation technology to obtain the best heat dissipation in combination through thermal simulation of multiple solutions of the system. The scheme has certain guiding significance for the practical application of the forced convection cooling system of high-power UVLED.
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