When installing a hood in the kitchen, not everyone knows how to combine a hood and natural ventilation in an apartment. Especially if there is only one ventilation duct.
Many people do not pay due attention to this issue. But in vain! Indeed, if you take the ventilation duct completely from the exhaust duct, you run the risk of being left without natural ventilation when the exhaust hood will not work.
When combining a kitchen hood and natural ventilation in a kitchen in an apartment, the main task is to prevent the flow from the hood from being squeezed back into the room through the ventilation grill.
This can be achieved using a check valve. Moreover, there are several ways to combine hoods and natural ventilation.
Check valve at the bottom of the grill
The first installation method is to arrange the grille with a check valve under the inlet of the duct from the kitchen hood to the ventilation duct.
This method makes sense to use in cases where the upper cabinets in the kitchen are not sewn up to the ceiling and there is free space above them.
The main disadvantage of this method is that the standard grilles with a non-return valve, which can be bought in stores, have a completely miserable design.
You can get out of the situation by ordering a grille of a suitable design and adding a check valve with your own hands. However, not everyone wants to do the extra work, so they are most often content with what they have.
What if there is no space above the lockers?
In the event that it is planned to completely “sew” the kitchen to the ceiling, and there is no place to install the grill, then you can use an alternative option.
This method involves the use of an exhaust duct also for the "needs" of natural ventilation. In this case, with the help of a tee and a non-return valve with an offset axis, an opening for natural ventilation is obtained.
When the hood is operating, the valve closes. And when turned off - opens. This entire structure can be placed above the cabinets and covered with decorative panels matching the color of the kitchen facade.
However, this method also has a drawback. The check valve, when closed, emits a fairly sonorous clap. Sometimes it can be annoying. To avoid this, you can come up with some kind of damper. But the main thing is that the valve after this does not jam.
For details on how to combine the hood and natural ventilation in the apartment, we recommend that you look in the video on the site.
