Factors affecting the efficiency of high-efficiency air filters and cleaning methods for different parts of air filters!

Impact on efficiencyAir FilterThe efficiency and resistance of the factors andAir FilterMethods of cleaning different parts!

Maybe the filter has been more common for everyone, so do you know anything about the testing methods of some of these filtration devices? Air filters are mainly used to adsorb impurity particles in the air, protect equipment and maintain air quality.

Air filter in some precision instruments used in the industrial field more, mainly used to filter some of the impurities in the air particles, if the machine into the machine will damage the normal operation of the machine to reduce the service life. In fact, the internal filter is not very complex is the filter and processor these, but plays a key role, the air filter is divided into several levels. High-efficiency air filter is one of them.

First, the efficiency of high-efficiency air filters. Factors affecting the rate of the filter is mainly the diameter of particles in the filtered air stream, the thickness of the filter media fibers, the filter media structure, the temperature and humidity of the air stream and the dust content. Made of different filter media, as can be seen from the test results; in the error allowable range of air filter structure on the filtration efficiency of the impact is very small, mainly related to the performance of the filter media; filtering air velocity changes will affect the filter efficiency, in the same air volume of different models of filters, the filtering efficiency of the filter is slightly different, this is due to the different filtering area caused by different filtering speeds.

Second, the resistance of the high-efficiency air filter. There are mainly 2 theories of resistance: the assumption that the porous body can be modeled as a system composed of capillary tubes, and the airflow through the circular capillary with Poiseuille (Poiseuille) law describes the use of this theory; the other for the theory of resistance, the assumption that the model representing the porous body with a certain geometry as realistic as possible while being very simple to be able to calculate the speed of the velocity field, the resistance of the air filter is mainly associated with the Air velocity, filtration area, filter structure, gas viscosity, gas average free range, fiber average radius and filling density. Summarizing these effects, the filter resistance can be regarded as the structure resistance and filter media resistance 2 parts of the sum, the corresponding resistance calculation correlation formula. From a large number of experimental data and theoretical calculations can be seen: the experimental value and the theoretical calculation of the value of the existence of a certain error, which is mainly due to the theory of the established model and the actual flow field in the filter does not fully match due to the same rated air flow, the structure of the resistance is equal.

It can be seen that the performance of high-efficiency air filters and the airflow rate has an important factor in the impact. Under the same structure of different filter media filters, filtration efficiency, resistance test results are different; the same type of filter due to different air velocity, filter efficiency, resistance test results are also different. Although the above study is only for high-efficiency filter test, but its influence factors on other than primary, medium efficiency are the same.

After a long time in the air filter sometimes need to carry out some cleaning, the following small introduction to the different parts of the air filter different cleaning methods:

An air filter consists of many parts, different parts in the cleaning, the corresponding method is different, then how to clean it?

1. The negative ion equipment in the air filter will cause dust accumulation in the surrounding environment due to static electricity in the process of operation, so it should be wiped frequently around the negative ion equipment.

2. Negative ion equipment is manufactured by simulating the principle of ionization in nature, it has a short service life, so the air outlet is good close to the human exhalation band, so that it can make it play a large application of the effect.

3. General air filtration equipment is set up in the air inlet with a coarse filter, which is dust particles ** channel filtration pass, generally can be easily disassembled, easy to clean, but also more dusty places, will affect the efficiency of the air inlet, so it is necessary to often clean.

4. Just purchased equipment to carefully read the product manual to see what special considerations, such as in the use of chlorine dioxide-type formaldehyde remover is placed in the closet, used to adsorb formaldehyde, but which produces oxidizing gases will also make the clothes in the closet faded.

5. No matter what kind of air filtration equipment, do not forget to regularly replace the filter element in the use of the process, and the replacement of the filter element can be based on the actual use of different products to determine the time and circumstances to help the equipment to run better.