Apparatus for natural ventilation of a room

An apparatus for natural ventilation of a room, comprising:

• a room delimited by walls,
• at least one door or one window installed in one of the room walls, which door or which window comprises an opening frame supporting a glass panel, which opening frame is mounted so as to move in a fixed stationary frame surrounding said opening frame,
• a ventilation passage provided on the door or the window and which communicates between the outside of the room and the inside of the room in such a way as to allow natural ventilation between the outside and inside of said room, which passage has a first end opening into the room and a second end opening to the outside of said room,
• a noise absorber capable of attenuating sound waves propagating in the ventilation passage, the attenuation being realized by the generation of a counter-noise which is superimposed on said sound waves,
• the door or the window is mounted so as to move between:
• a closed position wherein a profile of the opening frame is hermetically attached to a profile of the stationary frame in such a way as to prevent any ventilation between the inside and outside of the room by the door or the window,
• and an open position wherein the profile of the opening frame is detached and separated from the profile of the stationary frame in such a way as to allow natural ventilation between the inside and outside of the room by the door or the window, wherein
• in the closed position, the opening frame hermetically closes the first end of the ventilation passage in such a way as to prevent any ventilation between the inside and outside of the room by said ventilation passage,
• in an intermediate open position, the opening frame frees the first end of the ventilation passage, which first end opens into the space separating the profile of the opening frame of the profile of the stationary frame, in such a way as to allow natural ventilation between the inside and outside of the room only by said ventilation passage.