Dust filter to extend the life of educational projectors
In order to ensure the stable operation of the projector, the projector must be well cooled. The usual solution is to use the fan to take away the heat generated when the light source emits light. Therefore, based on the heat dissipation requirements, the projector is generally unable to seal the whole machine. Even if the laser projector has a sealed light machine, the main board and the power supply system are still exposed, and it is easily affected by dust. Unlike home and business projectors, educational projectors are in a special environment. Classrooms often contain more dust than homes and office environments. At the same time, education projectors need to be used for a long time, fans continue to operate, and a lot of air is being brought. It also accelerates the accumulation of dust, which is more likely to cause heat dissipation and even equipment corrosion and short circuit, which seriously threatens the life of the projector. Therefore, it is especially important to educate the projector against dust. To solve this problem, projector manufacturers often add dust filters to the air inlets to filter out dust while ensuring heat dissipation and ventilation.
As a deep-rooted projection industry for more than 20 years, BenQ has continuously explored and improved the dust filter of educational projectors in the process of continuous research and development and market promotion.
First of all, in terms of materials, the sponge filter used in the early stage can only block large particles of dust and insects, and the dustproof effect is relatively general. BenQ Education projector dust filter is constantly updated and upgraded. At present, two dust filters are mainly used, one is a dust-proof short-focus education projector DX825ST, and a non-woven fabric mountain pleat filter is used. The filtration efficiency of 10μm particles is as high as 80~90%;
A laser short-focus projector LX810STD is typical, using a double-layer composite material 3M electrostatic dust filter, a layer of synthetic fiber material (PL41) to block large particle dust dust, a layer of 3M HAF material through electrostatic adsorption tiny The particles can effectively filter PM2.5~PM10, while maintaining a certain permeability, which is beneficial to heat dissipation.
Secondly, in terms of installation and maintenance, the early education projector dust filter adopts a closed structure. The cleaning of the filter must be disassembled. The process is cumbersome. The BenQ education projector has been upgraded to a detachable built-in dustproof. The filter screen facilitates the cleaning of the filter screen, which can greatly reduce the post-maintenance work.
In the first half of the year, BenQ released the laser dust-proof education projector LX833STD, LX82USTD/LW83USTD. Recently, BenQ introduced a new short-throw projector DX808ST/DX825ST with 3000 lumens/3300 lumen brightness, 12000:1 contrast ratio, and XGA (1024x768) native. Resolution, dustproof performance is strong, while DX825ST is also equipped with dust-proof "black technology" magnetic sensor color wheel, will become the darling of the education market!
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