FIELD: ventilation.
SUBSTANCE: present invention relates to device controlling air flow in air channel. It includes tubular housing elongated along the axis and connected with air channel; flap extended inside the housing and arranged to turn around axis passing across the casing axis thus switching to multiple positions corresponding to multiple cross sections of air channel; rim rotating on the end of body around its axis; each flap is equipped with internal drive and the rim is equipped with external drive, or vice versa, the external drive and enveloping drive are arranged so that when rim is turning the external driving device interacts with external drive for changing position of every flap and cross section for air flow.
EFFECT: technical result simplifies air flow control device.
11 cl, 11 dwg
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