Many HVAC systems in the hospital use 100% outdoor air, which is a good strategy for preventing patients from cross -microorganisms in HVAC systems. However, 100% outdoor air does not eliminate the growth of microorganisms in the air filtration medium and its adverse effects on the nursing environment. Therefore, many hospitals still need advanced HVAC systems. The clean room of the health system was first used in the operating room. At the beginning, it was widely used in orthopedic surgery, because the orthopedic surgery was longer and it was easy to cause infection.

In the pharmaceutical industry, high -efficiency filters (HEPA) are used for the processing and filter of the processing and filtering of space air. Sterile production requires compulsory use of high -efficiency filters, and the production of solid and semi -solid dosage forms is sometimes used. H13 to H14 (DIN1822) is two types of high -efficiency filters, with an interception rate of 99.995%. But how long does it take to change?

The diffusion effect of small -particle size dust (Brown movement) is obvious, the wind speed is low, and the airflow has a long time to stay in the filter material, and there will be more opportunities to impact obstacles in the dust, so the filtration efficiency is high. Experience shows that for high -efficiency filters, the wind speed is reduced by half, the passing rate of dust will be reduced by nearly one magnitude (an increase in efficiency value by one 9), the wind speed increases double, and the pass rate will be increased by one magnitude (the efficiency is reduced by one 9).

Xinli Environmental Technology (Shandong) Co., Ltd. (Abbreviation: Shandong Xinli / Xinli Environment) Registered brands are \"snyli \", main business: FFU, air filter, liquid tank filter, chemical filter, wound filter, air supply, lamination, wind shower, transfer window, Purifying shed, clean engineering, providing an indoor air quality control solution, providing air quality control equipment OEM, etc.

According to the high-efficiency filter national standard GB13554-92 and GB13554-2008 to formulate quality standards: [Packaging] The outer packaging is intact, no hit, cracking traces; internal packaging (plastic bag) should be intact, foam angle, foam board Complete, model, air volume, airflow flow direction should be complete, accurate, complete, and product certificate is available. [Framework] High-efficiency filter frame surface has no obvious pollution, no unevenness, scar, no scratch, coating, no flakes, no burr, rust, high-efficiency filter frame (on one side of the viscosity) should be flat, no significant deviation; The high-efficiency filter frame strength should meet the requirements, such as placing the surface, shake, the frame has no deformation, and the shake occurs. [Seam] The seal between the high-efficiency filter paper and the frame should be strict, no gaps and holes; the sealing strip between the high-efficiency filter and the frame, should be connected, unfained, visual flat, high efficiency filters and boxes