| abstract |
The invention discloses a ventilation valve, comprising: a valve body with an inner cavity extending along a first direction, two ends of the valve body having openings communicating with the inner cavity along the first direction, and the inner cavity having an inner cavity extending along the first direction The centerline of the valve; a plurality of damper blades, which are arranged along the circumference around the centerline and located in the inner cavity, each damper blade has a rotation axis, and the rotation axis of each damper blade is perpendicular to the centerline; transmission The mechanism is located outside the inner cavity of the valve body, and each air valve blade is connected with the transmission mechanism; the driving device is located outside the inner cavity of the valve body and connected with the transmission mechanism, and the driving device is used to drive the transmission mechanism, so that the transmission mechanism Each damper blade is driven to rotate synchronously around its respective rotating shaft, so that the ventilation valve can be switched between a closed state and an open state. The invention can reduce the space occupied by the central position of the air valve. |