A kitchen chimney, also known as a range hood or extractor hood, is a ventilation device installed above a stove or cooktop in the kitchen. Its primary function is to remove airborne grease, combustion products, fumes, smoke, odors, heat, and steam that are produced during cooking.

Key components and features of a kitchen chimney typically include:
1. **Fan or Blower**: Draws in air from the cooking area.
2. **Filters**: Capture grease and some odors before air is exhausted.
3. **Exhaust Pipe**: Directs filtered air outside the building or recirculates it back into the kitchen after passing through additional filters.
4. **Lighting**: Often includes built-in lights to illuminate the cooking area.
5. **Controls**: Usually located on the front panel for easy access.

Benefits of using a kitchen chimney include improving indoor air quality by removing pollutants and reducing the buildup of grease on kitchen surfaces and furniture. They also help in maintaining a cleaner kitchen environment and can be designed to match the aesthetic of the kitchen decor.