FIELD: heating.
SUBSTANCE: this invention relates to an air-intake shaft containing adjustment devices for a ventilation system of a building, to a ventilation system containing at least one above said shaft, and to a building containing at least one above said ventilation system. The air-intake shaft for the ventilation system includes the following: an air pipe having a lower inlet hole and an upper outlet hole and consisting of many ducts that pass between the lower inlet hole and the upper outlet hole; adjustment devices containing a sliding device fixed relative to the air pipe, and a damper installed on the sliding device with possibility of translational movement and located flush with one of the above holes; besides, the damper can be moved between a closed position in which it closes the above hole and an open position in which it does not close the same hole; ducts are located one after another in the direction of translation movement of the damper, and when the damper is moving to its open position, it opens ducts one after another, and when it is moving to its closed position, it closes ducts one after another.
EFFECT: invention allows performing air flow control without any loss of flow velocity and without any formation of turbulence.
8 cl, 7 dwg
