How do mechanical filters effectively remove dust?

Mechanical filters effectively remove dust primarily by capturing particles on a filter media. This process involves physical barriers that trap larger particles as air passes through the filter. The filter media typically consists of fibers or other materials that have been designed to create a labyrinth-like structure, which obstructs the path of airborne dust and particulates. As air flows through this media, the particles are unable to navigate through the complex array of fibers and thus become trapped.

This method is purely a physical process, distinguishing mechanical filters from other types of filtration, like electrostatic filters that rely on electrical charges to attract particles. Mechanical filtration is one of the most common techniques used in air filtration systems, making it a fundamental concept in understanding how air filters operate to maintain air quality.