Positive-Negative Pressure Control Chamber and Positive-Negative Pressure Control System including the same

摘要

The present invention is a positive-negative pressure control chamber that is connected to an external positive pressure providing unit and a negative pressure providing unit to set the interior as a positive pressure or negative pressure environment, and is formed in a hollow to accommodate a user, and is formed on one side so that the user can enter and exit. A chamber housing including a formed door frame portion; A door part hinged to the chamber housing, capable of rotating at a predetermined angle, and opening and closing the chamber housing according to operation; And a clasp part which is located in the door frame part and is rotated and fixed to the door part, and thus a clasp part for closely fixing the door part to the door frame part, wherein the door frame part is located indoors and includes a circular inner circumferential surface. A first frame wall portion and a second frame wall portion, which is located on an outdoor side and includes an inner circumferential surface formed with a larger diameter than the first frame wall portion, the door portion includes a door plate capable of rotating a predetermined angle, and the door portion has the clasp It relates to a positive-negative pressure control chamber, wherein the door part and the door frame part are in sealing contact with each other as they are bound by the part.