I. Definition and Classification
The deep-pleat high efficiency filter, also known as a high-efficiency particulate air (HEPA) filter with separator, is a type of filter made from ultrafine glass fiber paper that is precisely folded into a corrugated shape and then framed with aluminum and rubber. Depending on the material of the separator, it can be classified into paper separator HEPA filters, aluminum foil separator HEPA filters, and high-temperature resistant HEPA filters with separators.
II. Working Principle
The working principle of the HEPA filter with separator primarily relies on various effects of the filter material, including interception, inertial impaction, diffusion, gravitational settling, and electrostatic action. These effects trap particulate matter, microorganisms, and other pollutants in the air on the surface of the filter material, thereby purifying the air. During operation, air enters the filter through the outer frame, is guided by the separator, passes through each filtration unit, and gradually traps particulate matter and other pollutants on the surface of the filter material, while clean air flows out through the filter material.
III. Performance Characteristics
- High filtration efficiency: The HEPA filter with separator has excellent capture capabilities for particulate dust and various suspended matter larger than 0.3μm, with a filtration efficiency of over 99.99%.
- Low resistance: The design of the aluminum foil separator ensures smooth air passages and low resistance, which is beneficial for increasing airflow.
- High airflow: While ensuring high-efficiency filtration, it also features high airflow, meeting the demand for air circulation in clean rooms.
- High temperature and humidity resistance: Some models are suitable for high-temperature or high-humidity environments, such as high-temperature resistant HEPA filters with separators.
- Long lifespan: Good anti-aging performance, resistance to deformation and aging, ensuring the durability of filtration effect. Under normal use conditions, the service life can typically reach 1-3 years.
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