Introduction to High Efficiency Filters

Each by the flame test method, with high filtration efficiency, low resistance, large capacity dust and other characteristics. High efficiency air filter can be widely used in optical electronics, LCD LCD manufacturing, biomedicine, precision instruments, beverage and food, PCB printing industry, clean air purification plant at the end of the air supply office. Efficient and ultra-efficient filters are used for the end of the clean room, its structure can be divided into: there are high-efficiency partition filter, no partition high efficiency filter, high efficiency air filter, ultra-efficient filters.
In addition there are three kinds of high efficiency filter, one is ultra-efficient filter, can be purified 99.9995%. One is the antibacterial non-clapboard high efficiency air filter, with antibacterial effect, to prevent bacteria into the clean workshop, one is sub-efficient filters, cheap before the more demanding for the purification of space.
Precautions
Installation requirements for high efficiency filters:
Installation of high efficiency filter is to clean air conditioning system and clean room construction and installation of the key, should note the following:
Clean before installation;
The system should be blown clean;
Clean the workshop should be fully cleaned again, such as vacuuming with a vacuum cleaner, not with ordinary vacuum cleaners, must be equipped with ultra-clean filter bag vacuum cleaner;
If installed in the ceiling, the ceiling should be cleaned;
And then try to run the system up to 12h clean and clean shop again before they can install high efficiency filter.
Unpacking
Only in the installation site, the installation time is demolished high efficiency filter packaging, removed after the appearance inspection should be made, and require each specific performance indicators of the test data may not be general printing of a limit value data (such as ≤ Pa)
Leak detection
Cleanliness level is equal to or higher than 100 clean room efficient filter must be installed before the scene leak detection, the focus is to check the filter without damage such as leakage of their own quality. All levels of clean shop, require its installation of high efficiency filter for leak detection, in the current specification does not give the number of checks, you can customize a ratio, the focus of the installation of leak detection air filter seal quality.
Resistance deployment
Each high-performance filter resistance difference will affect the air balance and air flow uniformity, the installation should be too high or too low resistance to the individual air filter removed, the size of the resistance similar to the air filter arranged in the same room, different in the same room Resistance of the air filter should also be evenly dispersed location.
For the one-way flow clean room on the same air supply surface of the air filter, the difference between the resistance requirements is more important, according to “clean room construction and acceptance of norms”, should be consistent with the following relationship:
The actual value of each resistance (rated air volume) = (0.95 ~ 1.05) × air supply surface of the actual resistance of the average