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Operating room filter replacement time

2018-12-13

As a high-purity space air filter in the operating room, in order to ensure stable operation and indoor cleanliness, it is necessary to replace it after using for a period of time. The initial effect, medium efficiency and HEPA filter replacement period of the operating room are based on the air after cleaning. The number of air dust particles having a particle diameter greater than or equal to 0.5 μm is allowed to exist, and the purifying laminar flow operating room can be divided into four levels of 100000, 10,000, 1000, and 100. Among them, the higher the number, the lower the purification level.

What is the standard for filter replacement time at all levels in the operating room:

If the initial filter resistance has exceeded the rated initial resistance of 60Pa, or equal to 2 × design or running initial resistance for 3-6 months, exceed the standard at any time to replace.

For example, the resistance of the medium efficiency filter has exceeded the rated initial resistance of 80Pa, or equal to 2× design or the initial resistance of the operation is 6-12 months, and the standard is replaced at any time.

For example, the high-efficiency filter resistance has exceeded the rated initial resistance of 100Pa, or equal to 2× design or initial resistance (3 times for low-resistance sub-efficiency) for more than 1 year, and the standard is replaced at any time.

If the HEPA filter resistance has exceeded the rated initial resistance of 160Pa, or equal to 2 × design or running initial resistance for more than 3 years, exceed the standard at any time to replace.

Operating room HEPA filter  material generally uses glass fiber filter paper, using hot melt as filter element separator, which is convenient for mechanized production. In addition, it has the advantages of small size, light weight, easy installation, stable efficiency and uniform wind speed. The utility model has the advantages of light weight, small structure, large filtering area, low pressure loss, high filtering precision and low running cost, and can effectively control 0.1-0.3 um particles.