No need to connect to the exhaust pipe system The CFW fume separator and HG metal high-efficiency cyclone separator with invention patents can effectively deal with particles of 5 microns and above with an efficiency as high as 99%. A composite high-efficiency filtration process of no less than 5 stages can effectively remove water vapor, grease and smoke particles released by cooking utensils, while significantly reducing odor emissions. The fan frequency conversion control system can select three available speeds to maintain a constant recirculated airflow, saving energy, reducing operating costs, generating lower noise, and enhancing the comfort of the working environment. (Optional The ASL LED cooking light enhances visual comfort while restoring the true colors of food. The filter maintenance reminder function, energy-saving frequency conversion management, fault prompt, heat recovery management and intelligent cooling management services provided by the LCD display screen are safe and effective. (Optional The hood is equipped with flow channels around it to prevent condensation water from dripping. Made of stainless steel, all welds have been ground and polished to achieve the original smoothness of the metal.