How does a kitchen chimney work?
Chimneys technical name is extractor hood consists of three main components: a capture panel to contain the rising gases, one or more oil collectors or grease filters (depends upon type of chimney), and a fan or tangential blower for forced ventilation.
A chimney is fitted right above the cooking appliance. When turned on it sucks the oil, smoke, steam, odor generated during cooking. The oil gets trapped into the oil collectors and the odor, smoke, steam, heat is thrown out of the kitchen through the duct.