An intumescent material fire stop device, comprising a support body shaped so as to take a collar-like shape around an axis and to define an opening intended to house a pipe, an expandable element, made up of at least one intumescent material and positioned in the support body, and one or more foldable fin joined to the support body by at least one respective hinge portion along a radially inner peripheral edge of said opening. Due to the expansion of the expandable element, the fins are movable between an initial position, in which the fins are substantially parallel to each other and not intercepting said opening, to a closing position, in which the fins converge towards the axis to close at least partially the opening. Advantageously the expandable element is made of at least one first intumescent material, expandable at temperatures equal to or greater than a first activation temperature T1, and at least one second intumescent material, expandable at temperatures equal to or greater than a second activation temperature T2 higher than said first activation temperature T1. The first intumescent material and the second intumescent material are axially staggered.
Intumescent material fire stop device
RAMORINO, Giorgio;
2013-01-01
Abstract
An intumescent material fire stop device, comprising a support body shaped so as to take a collar-like shape around an axis and to define an opening intended to house a pipe, an expandable element, made up of at least one intumescent material and positioned in the support body, and one or more foldable fin joined to the support body by at least one respective hinge portion along a radially inner peripheral edge of said opening. Due to the expansion of the expandable element, the fins are movable between an initial position, in which the fins are substantially parallel to each other and not intercepting said opening, to a closing position, in which the fins converge towards the axis to close at least partially the opening. Advantageously the expandable element is made of at least one first intumescent material, expandable at temperatures equal to or greater than a first activation temperature T1, and at least one second intumescent material, expandable at temperatures equal to or greater than a second activation temperature T2 higher than said first activation temperature T1. The first intumescent material and the second intumescent material are axially staggered.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
