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2022-10-29
Research and development of air filter CCM rapid evaluation device Nantong Hengjia air filter factory
Henkaes air filter factory has developed air filter CCM rapid evaluation device since 2016, and has established 30 cubic bins for HEPA air filter particles and 3 cubic bins for formaldehyde testing. Test the ccm item of the filter screen of the air purifier, and carry out the discussion on "the relationship between the particle CADR and the primary filtration efficiency; the relationship between the primary filtration efficiency of the filter screen and the primary filtration efficiency of the filter material; the relationship between the resistance of the filter material and the resistance of the filter screen; the relationship between the cumulative purification amount of the particle and the primary efficiency of the filter material and the resistance of the filter material."
CCM value -- Chinese means cumulative purification amount. It refers to the parameter of cumulative purification capacity of air purifier for particulate matter and gaseous pollutants under specified test conditions. The straightforward description is: it describes the total weight of pollutants accumulated by the air purifier when the filtering capacity of HEPA filter screen or formaldehyde removal filter screen decreases to 50%, in mg The higher the CCM value, the longer the service life of the air filter screen. From the perspective of the air filter screen industry, we will measure the initial resistance of a filter screen when designing the filter screen. As time goes on, more and more dust accumulates on the air filter screen, and the resistance becomes larger and larger. When the initial resistance at the resistance level is twice, we determine that the air filter screen is scrapped (it needs to be replaced in time). The resistance at this time is what we call the final resistance. Therefore, the CCM value can also be understood as the service life of the filter screen.
The technical innovation of the project: the cumulative purification amount of particulate matter of the filter material can be evaluated by testing the initial resistance efficiency and the final resistance efficiency of the filter material, and the cumulative purification amount of particulate matter of the filter material can be quickly evaluated. It can provide customers with estimated ccm suggestions in the early research and development stage, and after the filter screen is completed, it can also be tested to adjust the scheme faster.
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