How long can the air filter(engine) and multi filter(aircond) be used?

Arrive summer air conditioning use of a lot of, drive a car to want to open air conditioning basically all the time by day, and the change of air conditioning filter element, it is air conditioning system maintains in the most basic one.

The function of air conditioning filter element is known to all, is to filter the air into the car, so that we breathe fresh and clean air. Some people also say that we don't need filters to breathe outside, so why do air conditioners need filters to let us breathe? This is because the suction generated by the blower operation is relatively large, and the area of the air inlet is relatively large. As long as there is a little cotton wool and dust around the air inlet, it will be sucked in. In the car, the space is narrow, the air flow is poor, and the probability of dust being breathed into the body by us is relatively large. In other words, if you don't filter it, the air inside the car is probably worse than the air outside.

Similar to the air conditioning filter element there is an air filter element, the structure and function of the two are the same, said today together. First of all, the replacement cycle, both are related to the vehicle environment, the worse the environment, the higher the frequency of replacement. If the construction site, such as more dust places, may be thousands of kilometers should be changed. For most ordinary urban road vehicle environment, 10,000 kilometers of air filter element to change, air conditioner filter element every summer and winter can be changed. If you drive too much, increase the frequency as necessary. Now there is a kind of air conditioning filter that can filter PM2.5. This kind of filter has a better filtering effect, but it also gets clogged very quickly. It takes less than a summer to block, and the air volume will be very small, so it needs to be replaced.

Some people say need not often change, dirty blow it is OK, whether feasible? If the filter element is slightly dirty, it is ok. If the filter element has just been changed for a short time, and the surface is dirty, it can be blown and used again. But if it has been used for a long time and the surface is very dirty, then the effect of a blow is relatively small. One blow can only blow away the surface dirt, but in the deep layer of the filter paper can not blow out, the filter paper is still very dirty in the middle, blowing only the surface does not look dirty. Because the filter paper of the filter core has several layers in order to have a good filtering effect, dust and impurities will enter into the inner layer along the pores, which cannot be blown out. If not blown out, part of the pores will be blocked.

What's the harm? First say air conditioning filter element, dirty blow continue to use, first of all will affect the air volume, air volume is small air conditioning refrigeration effect will become worse. Secondly, some bacteria and mould will grow after being dirty, which will affect our health after being blown out. Finally, due to a lot of dirt, there will always be some impurities entering the air duct through the filter element and along the air duct to the evaporation box. The structure of the evaporation box is the same as that of the water tank, so the dirt will adhere to the evaporation box. After more will make the evaporation box blocked, refrigeration effect greatly reduced, want to repair can only clean the evaporation box, do not remove the cleaning is likely to be removed, the amount of work will be very large.

Besides, air filter element, dirty will lead to the intake of air not smooth, the amount of air into the engine is insufficient. There are various problems associated with insufficient intake, such as incomplete combustion, increased carbon deposition, increased fuel consumption, decreased power, and so on. If it is particularly dirty, there will be some impurities, dust, sand particles and so on into the cylinder through the filter core, will make the cylinder wear increased, if the turbocharged car, will also make the supercharger wear increased. So the turbocharged car must pay attention to frequent replacement of air filter element, many of the turbocharged car and the air filter element is different from the self-prizing car, bigger, better filtering effect, more expensive, so do not change the wrong.

If it is not time to change, the middle can be taken out to blow. For example, 10,000 kilometers can be replaced once, and 5,000 kilometers can be blown, so as to make it dirty more slowly, at the end of its life, it can still have a better filtering effect. Change immediately after the replacement cycle, filter and oil are the most basic maintenance, do not save money on the most basic maintenance.