Описание на английском языке:
If you open your PC again after half a year, perhaps to install new hardware, one wonders most of the time whether the Rechenknecht is not better to call a vacuum cleaner. What makes it easier on the one hand - imagine just how much more often the room would have to be cleaned if all the dirt was not collected as a precaution by the computer - means elsewhere consuming cleaning of the PC interior.
In addition, dust in the housing is the main reason for overheating and thus for possible, unstable operation. Although a cleaning time-to-time can not be prevented, however, the effort can be significantly reduced. A simple and cost-effective solution are dust filters, which are placed in front of the sucking fans. Once installed, it is no longer necessary to dedust the entire interior with all its inaccessible corners and sensitive components, only the filters.
DEMCiflex offers a particularly easy-to-retrofit solution, which in this case is suitable for 120 mm fans. Here, the filter is simply placed from the outside of the housing on the fan opening and is held there magnetically. There are therefore no screws or the like necessary, so there is no compatibility restriction. Since not all fan positions are magnetically attractive, an additional frame to the scope of delivery is glued to the back and on which the filter is held.
The filter itself consists of a very tightly woven and durable polyester fabric. This special material is also used in clinics, for example to keep operating theaters dust-free. At the same time, the net is well permeable to air and therefore hinders the airflow only slightly.
Of course, this effect diminishes with increasing dust, which is why the filter should occasionally be removed and cleaned. This is very simple in many ways. Firstly, it is easy to see if cleaning is necessary again - as soon as the white filter fabric has a gray haze, you should do this task.
Due to the special mounting method, the removal of the fan is again very easy and fast. Afterwards, the dust can either be brushed, shaken, washed off and even scraped off with stubborn dirt.
Finally, a few notes on the installation: First, the question arises, which fans have to be covered at all. As already mentioned, this applies exclusively to the sucking fans. But which are they?
The safest way to recognize this is on the fan itself, with two arrows on the outside of the fan frame. If one of the two arrows points towards the interior, it is an aspirating fan. These are usually located on the front, side and bottom, whereas the rear and cover fans usually carry the air out of the housing and therefore need not be filtered.
In order to maximize the filter effect, an overpressure in the housing can be generated. This means that more volume of air is forced into the housing than is being sucked out of the housing by other fans at the same time. This prevents air (and with it the dust) from entering the interior through other openings that may not have been filtered.
If all fans are the same size, you should blow more fans into the housing than pull out. In this case, the power supply is to be counted as an additional, extracting fan, as long as it does not receive its supply (fan side) directly from the outside (occurs at floor mounting). If different fans with different sizes and speeds are used, the respective air volumes (m³ / h) in the data sheets give a good reference value, whereby in turn the total volume of the suction fans must be higher than that of the blowing out fans.
Note: The area around the used fan slot should be flat if possible and have no protruding parts. Otherwise, these may impair adhesion to the substrate.
Figure 4 shows an example configuration on a housing (not included). As can be seen, the use of LED fans is possible because the transparent material hardly hampers the lighting.
- Size (frame): Ø approx. 138 mm
- Size (filter): Ø approx. 113 mm
- Compatibility: 120 mm fan slot
- Material (filter): polyester mesh
- Color: black (frame), white (filter)
- Mounting: magnetic bracket + mounting frame
restriction Easy and quick cleaning
Effective filter effect with high air permeability