How does an extractor hood work?
An extractor hood (professional vapor extraction) is built into almost every kitchen, and there are two designs. But do you know how this device works?
One Extractor hood is in the kitchen mounted to extract the fumes that arise during cooking or baking. There are two different systems: the exhaust air hood and the recirculating air hood.
How an extractor hood works with exhaust air
- An exhaust air hood consists of an extractor hood that is connected to an outlet in the house wall by means of a large pipe or hose (125 - 150 mm).
- This fume extractor also consists of a radial or axial fan, usually lighting, a control panel and a grease filter.
- In this system, the vapors are sucked in by the fan. The air is then cleaned with the grease filter and blown outside through the hose.
- The exhaust hood takes up a lot of space, as the hose from the hood to the house wall often has to be laid in an extra duct.
- This method is not efficient, especially in winter, as warm room air is blown out of the house.
Extractor hoods without exhaust air - information
For the indoor climate in your kitchen and your entire apartment, it makes sense if you ...
How an extractor hood works with circulating air
- A recirculation hood works similarly to the exhaust air hood. However, the hose is replaced by an odor filter (activated carbon filter).
- The hood in turn draws in the cooking vapors, cleans them with the grease filter, removes them Smells with the activated carbon filter and releases the air back into the room.
- Since no hose is required with this system, it can be installed directly under the cabinet, but also on the side or behind the hob.
- Since the room air is not blown into the open, but remains in the room, these extractor hoods work perfectly in low-energy or passive houses.
Regardless of how the extractor hood works, both of them mean that the grease filter and carbon filter must be cleaned or replaced regularly. Otherwise there is a risk of fire in the worst case.