Reversible air deflector and ventilation system

A system of reversible ventilation of buildings with people present, comprising ventilation and heat recovery devices, wherein the system further comprises at least two inlet-outlet ventilation installations (W, P), active in opposite inlet or outlet phases, wherein at least one of these installations comprises a ventilation device (W), formed inside at least one through compartment (1, 1a) with two inlet—outlet, terminal openings (2, 3) and with a reversible air driver (6, 6a), rotatably mounted on a bearing, formed by a hollow suction—inlet body (9) and a hollow, pumping—outlet body (10), both bodies rotated separately along a common rotation axis (X), wherein during the outlet phase the air reversible driver (6) and the bodies (9, 10) are rotated at an angle not greater than 180°, wherein a control of the air flow is obtained by reversing the position of the air driver (6, 6a), such that the air flow changes direction, wherein each of the bodies (9, 10) of the driver (6, 6a) is provided with a side outlet (11) and frontal through openings (12), wherein the side outlets (11) of the both bodies (9, 10) are mounted opposite each other, and axes of the frontal through openings (12) of the both bodies (9, 10) are aligned with the common rotation axis (X), wherein a radial fan (13) which continuously rotates in a fixed direction is placed in the pumping—outlet body (10) of the driver (6, 6a) in at least one through compartment (1, 1a), wherein each of the at least one through compartments (1, 1a) of the ventilation device (W) is divided into three parts (A, B, C) in a parallel layout, and the reversible air driver (6, 6a) is located in a middle part (B) of the at least one through compartment (1, 1a), while a fixed partition (17) is passing through an initial part (A) and the middle part (B) of the at least one through compartment (1, 1a), separating them into two parallel branches formed as a suction duct (18) and a pumping duct (19), wherein in the suction duct (18) and in the pumping ducts (19) of the initial and of an end part (A, C) of the at least one through compartment (1, 1a) air treatment devices (20, 21, 22) are located and that one of the terminal openings (2) of the at least one through compartment (1, 1a) is connected to an opening (4) in an external wall (5) of a building (D), and the second terminal opening (3) of the at least one through compartment (1, 1a) is located inside a main premise (R) of the building, wherein each of the bodies has the frontal through opening surrounded with an annular protrusion, wherein

• the both bodies and of the deflector are arranged opposite a fixed partition having a round through opening with its edge of a funnel outline surrounded on two sides with a pair of annular protrusions in such a manner that the common axis X of the frontal openings of the bodies is aligned with an axis of the round opening of the partition surrounded on two sides with the pair of annular protrusions, and the annular protrusions of the bodies and are in mesh with the pair of the annular protrusions of the partition, wherein
• two ribs (14, 15) are formed on circumferential edges of the bodies (9, 10) of the air driver (6), abuttingly fitted to an internal, circumferential frame (16) of walls of the compartment (1) at their extreme ends, dividing the compartment in a transverse direction, and wherein
• in order to prevent uncontrolled air flow between the suction and the pumping areas of the through compartment, a contactless labyrinth seal is formed at the junction of the compartment edge and a rotary flange.