Integrated air flow adjuster for conventional air duct systems

A ventilation unit intended to serve as at least one of a supply unit and an exhaust unit in an air duct system in a ventilation plant,

• characterized in that
• the ventilation unit comprises at least two sections of tube (1, 3) that can be connected with a common axis with mutually adapted dimensions,
• at least one of the said sections of tube (3) constitutes a fixed part that is connected to the said air duct system,
• at least one of the said sections of tube (1) can be displaced relative to at least one axially connected fixed section of tube (3),
• two of the said sections of tube that can be connected along their axis are mutually displaceable and form an area of overlap (1-3) at their connecting end parts, whereby one of these sections of tube (3) has one or several openings (2) that can be opened in the wall of the tube next to the said area of overlap (1-3), and
• the flow of air through the said one or several openings (2) that can be opened can be regulated with respect to both its magnitude and its direction, through displacement and rotation, respectively, of the displaceable sections of tube (1) in relation to the at least one fixed section of tube (3).

An air duct system for a ventilation plant,

• characterized in that
• the air duct system comprises a first set of fixed sections of tube (3) and a second set of displaceable sections of tube (1),
• of which the fixed sections of tube (3) have a first dimension and where at least certain of them are provided with an end part designed for the axial connection of the corresponding displaceable section of tube (1), which serves as a supply or withdrawal unit, and
• the displaceable sections of tube (1) have a corresponding dimension that is adapted for connection to one or two of the said fixed sections of tube (3), and
• the displaceable sections of tube (1) have one or several openings (2) that are open or that can be opened in the wall of the tube next to an area of overlap (1-3),
• which openings (2) make possible the regulation of the flow of air, with respect to both its magnitude and direction, through the mutual displacement and rotation, of the relevant displaceable section of tube (1) relative to the fixed section of tube (3) connected to it.