Carrousel-type revolving door for use in building, has outer barrel shell with movable barrel sections that are provided on either side of passage, in which non-revolvable door leaves are folded, during emergency condition to extend passage

摘要

The door has an outer barrel shell (1), two oppositely placed passages (2, 3), and a rotator (4) arranged within the periphery of the shell, where the rotator includes door leaves (6). The non-revolvable door leaves are folded together in one of the passages during an emergency condition. Movable barrel sections of the shell are provided on either side of the passage (3) during the emergency condition to extend the passage (3).