AIR FILTER

An air filter, relating to the technical field of air purification. The air filter comprises an outer frame (101) for enclosing a filter channel (102), and filter materials (201) for transversely sealing the filter channel (102), and is characterized by further comprising electric heating components (301), wherein the electric heating components (301) are arranged in the filter channel (102), and are used for generating heat when being powered on and for heating the filter materials (201) and/or air in the filter channel (102). The air filter has a heating function, can select, during an operation process and according to actual working conditions, an area for heating the filter materials (201) and air, so as to prevent moisture in the air from affecting the filter efficiency of the filter materials (201), and has the characteristics of enhancing a filtering effect, prolonging the service life of the filter, etc. Un filtre à air, se rapportant au domaine technique de la purification de l'air. Le filtre à air