Patent ID: 9631649
Date: 2017-04-25
CPC Classifications: F15D,F24F,G05D

Claim:
1. A device for adjusting a flow rate of air flowing in an air duct, comprising: a tubular body extending along an axis fluidly connected to the air duct; at least one flap extending inside the body and adapted to pivot about an axis transverse to the axis of the body, to occupy a plurality of positions corresponding to a plurality of air passage cross sections; a ring pivotally mounted on an end portion of the body about the axis of this body; each flap being provided with a male drive means, and the ring being provided with a female drive means, or vice versa, the male drive means and the female drive means being arranged in such a way that, in response to a pivoting of the ring on the body, the male drive means cooperates with the female drive means to alter the position of each flap and, as a consequence, the air passage cross section.