Originally Posted by tkchan007
Just a quick thing regarding the air flow in-n-out of the case, perhaps the rear is the intake and the front and side is the exhaust? It would seems odd that it goes from 1-to-2 instead of 2-to-1, but it really depends on whether the rear 'in' can create enough of a positive pressure inside to keep dust out from the front-n-side.
I dont remember reading whether SMJ has checked whether air is being blown out in the rear or being sucked into the rear vent which is where the filter is sitting at.
I havent had anything in my inbox yet,
The rear is definitly the exhaust..as thats the hottest part,
yes i used a cigarette lighter on all vents to see which way if flame was being sucked or blown.lol
Here is my hypothesis on how the air flow works
Red arrows is the exhaust. the rear fan is powerful and pulls all the air through the machine.
Its pulls the green arrows which represent the filtered air into the machine under the top boards
The white /grey arrow is unfiltered air, & flows over the top layer fins, leaving the left & right side to pull in filtered air to the componants board underneath the top layers.
Undeneath the top circuit board fins, the filtered air is pulled in though the sides to protect the vital componants from dust.
Using a powerful fan in the size of a a case about the same dimensions of an xbox, what we have here is a powerful windtunnel. Unfortuantly ( i`m led to believe) that the unfiltered air does in fact enter the machine, but that chances of it settling are miminal resulting in a negligable amount of residue of dust over time, like a typial PC.
The vital componant are compartmentalised using the filtered air, so the regular air blows through the front to rear to cool the top fin boards
It seems silly they havent put a filter on the front vent, however because the vital companants are using filtered air, its only the top layer of fins that would/ could collect dust. + build up on the rear fan over time.
The optics are sealed, the vital componants use filtered air, but i imagine once every 2 years it would be wise to open the case and use some compressed air to clean the fins and inspect the rear fan.
This to me makes the most logical sense of what ive seen. The layout its more like a PC than a projector, which could be a good thing.
I may have to put some air conditioning material with some sticky tape on the front vent, problem solved
Another idea could be that the 2 pathways of filtered air pushout the unfiltered air like a self cleaning action. The 2 jets of filtered air would be pulling harder than the front vent so imagine the central airflow would be blown out by the 2 filtered streams.
As the X1000 has a default temperature of approx. 28 degrees C (as measured 6 inches away from rear exhaust ) i sumise that even with a thick layer of dust this would boost the temperature by about 10 degrees (based on observations on dusty/clean general PC CPU Chips)
One of the unexpected things we uncovered was that the X1000 survived 40 mins of bluray playback whilst inside a tin foiled lined hot box with restricted airflow, boosting up the temeprature of the projector considerably much higher than if it was covered in many many years of dust! . I believe the 2 filter air streams would stop the majority of dust from settling. so even the idea thick dust would be unlikey.
The higher pressured filtered air would push out towards the rear diluting the dust particles of the front as they exit the exhaust.The projector seems to designed like this as to take advantage of its elaborate cooling system, the vital componants are protected by using the filted air though the sides, and the unvital areas are used for maximum airflow by sacrificing the design cost of a front dust filter. Considering this projector run extremley cool anyways, even if the projector were to rise in temperature by 10 degrees the cooling would be able to handle it
Its quite easy to stick some air conditioning material over the front vent problem solved, so really all this dust speculation can be avoided