Unit curtain wall concealed-type ventilator

The utility model provides a unit curtain wall concealed-type ventilator, in order to solve the problem that an air outlet and a curtain wall of the exiting ventilator are not consistent in structure. The unit curtain wall concealed-type ventilator comprises a base plate and a panel, wherein the base plate is fixed on a lower cross frame of a curtain wall unit plate; and the panel is assembled with the base plate. The technical key point is that a mold cavity of the lower cross frame is provided with a groove with air holes; the base plate with air inlet holes is fixed in the groove of the lower cross frame, and the air inlet holes of the base plate and ventilating holes of the groove of the lower cross frame are communicated mutually; the upper surface of the panel provided with air outlet holes and assembled with the base plate and the upper surface of the lower cross frame are positioned in the same plane; a movable baffle plate which enables the base plate air inlet holes to be at the starting or closing