Fresh air supply device for room, has spring housed in body structure so that its use permits to obtain two end positions of blades, in which air is directed to flow into different directions from air chamber

摘要

The device has blades (13) in an air chamber (14), where the blades are supported by a spring (J) in a body structure (11). The spring is stretched between the body structure and the blades. The spring is housed in the structure in such a manner that its use permits to obtain two end positions of the blades, in which the air is directed to flow into different directions from the air chamber.