toate categoriile

industria de știri

Acasă>Noutăți>industria de știri

Cum se prelungește durata de viață a filtrelor HEPA?

Timpul: 2022-12-15

În primul rând, dorim să reamintim clienților că cea mai fundamentală și mai simplă modalitate de a prelungi durata de viață a filtrului HEPA este să păstrați praful din prefiltru. Cu alte cuvinte, asigurați-vă că fluxul de aer expus filtrului HEPA este aerul filtrat de prefiltru, filtru grosier și filtru mediu. Aerul în acest moment ar trebui să îndeplinească standardul de 99.95% particule mici de praf și poluare scăzută.

It should be noted here that replacing the pre-filter generally does not require stopping production or other normal work plans and arrangements. After installation, it can ensure the normal operation of air conditioning equipment without debugging. So experienced customers will focus on the pre-filter. For highly clean areas such as class 10000 and class 100000 clean workshop or operating room, F8 filtration can be selected for pre-filtration (colorimetric method 95%). In this way, the service life of the terminal HEPA filter can generally reach 5 years. In foreign projects and domestic new projects. F8 filters are the most common prefilters for non-uniform flow cleanrooms. For the clean workshop of class 100, class 10 or higher in the chip factory, the common efficiency level of the pre-filter is H10 (MPPS85%), and many new projects simply choose HEPA (filtration efficiency of 0.37m particles ≥99.97%).

In the past clean room air conditioning system design in China, the common configuration of the filter is: coarse effect → medium effect → high efficiency. At that time, the service life of terminal HEPA filters was only 1-3 years, with the worst being a few months. It can be seen that the pre-filtration efficiency determines the service life of the end filter.

In some cases, the provisions for the use of "Lingjie" brand high efficiency filters are not out of consideration of resistance, but other factors. If there is hydrofluoric acid in the workshop, and the workshop air conditioning is not a full fresh air system, the glass fiber filter paper of the high efficiency filter will be corroded by the return air. For safety, the HEPA filter must be replaced regularly. Now,

Some domestic third-class A hospitals and pharmaceutical factories will take the initiative to replace HEPA filters after the rainy season every year, the main purpose is to prevent any possible mold pollution on the filter. In some countries, third class A hospitals, biological laboratories of pharmaceutical factories and laboratories dealing with dangerous goods will use new HEPA filters in order to ensure safety and reliability before carrying out a new health topic