Analysis of the Filtration Efficiency of Oil Mist Purifiers for Frying Oil and Cooking Fumes

During the deep-frying process, high temperatures cause cooking oil to vaporize and food residues to carbonize, generating significant amounts of suspended oil droplets, oily fumes, and odorous pollutants; these not only pollute the environment and lead to the accumulation of greasy deposits but also pose risks to respiratory health.

Oil fume purifiers are specialized devices designed to treat fumes specifically from deep-frying; capable of efficiently filtering out the grease and smoke generated during the process, they serve as the core purification equipment for both commercial kitchens and home frying setups, delivering stable and highly effective purification results.

The core purification principle of the oil fume purifier combines electrostatic adsorption with multi-stage mechanical filtration; this dual-structure design precisely treats pollutants found in frying fumes. The process begins with primary mechanical filtration: a built-in high-density stainless steel mesh captures larger grease droplets and carbonized particles, preventing large oily particulates from being directly discharged. Simultaneously, it partially diverts the fume airflow to reduce the load on subsequent purification stages and prevent equipment clogging caused by the accumulation of large grease particles.

The core purification process utilizes high-voltage electrostatic adsorption. When powered on, the device generates a high-voltage electrostatic field internally; passing fine cooking fumes and grease particles are ionized, acquiring positive or negative charges. Based on the principle that opposite charges attract, these charged particles are rapidly drawn to the electrostatic plates, enabling the precise capture of micron-sized grease and fume particles and effectively eliminating the issue of fine fumes escaping during frying. The captured grease automatically collects and drips into a collection tray, facilitating the separation and centralized gathering of oily residue.。

In addition, some high-end oil mist purifiers feature activated carbon and negative ion purification modules, which further adsorb the pungent odors generated during frying and enhance purification performance. The entire system employs physical purification methods—eliminating the risk of secondary pollution—and achieves a purification efficiency of over 98% for frying fumes and grease; it ensures consistently clean air and is suitable for a wide range of frying operations.