Search

CA-3044783-C - FIRE PROTECTION ELEMENT

CA3044783CCA 3044783 CCA3044783 CCA 3044783CCA-3044783-C

Abstract

The invention relates to a fire protection element (100) for the separation of openings passing through walls or ceilings, in particular of line passages, comprising a molded part (112) with a honeycomb structure (114) made from intumescent material.

Inventors

  • Herbert Munzenberger

Assignees

  • HILTI AKTIENGESELLSCHAFT

Dates

Publication Date
20260505
Application Date
20180207
Priority Date
20170222

Claims (10)

  1. We Claim: 1. A fire-protection element for sealing of openings in walls or ceilings, the fire-protection element comprising: a honeycomb structure having a plurality of openings disposed adjacent to one another and being made of a material consisting of an intumescent material and expandable-graphite particles, wherein a cross. section of each of the plurality of openings has a polygon shape, wherein the honeycomb structure extends in an axial direction, wherein at least a part of the intumescent material forming a wall of a first of the plurality of openings is shared with a wall of a second of the plurality of openings that is adjacent to the first of the plurality of openings, wherein prior to activation the plurality of openings are unobstructed along their axial length by the intumescent material, and wherein· each wall · in the honeycomb structure has homogeneous thickness in a direction perpendicular to an axial direction along the axial length, and a frame that surrounds the honeycomb structure along the axial direction.
  2. 2. The fire-protection element according to claim 1, wherein the honeycomb structure is more compressible in the direction perpendicular to the axial direction than in the axial direction.
  3. 3. The fire-protection element according to claim 1 or claim 2, wherein the honeycomb structure is filled with a filling foam.
  4. 4. The fire-'protection element according to claim 3, wherein the filling foam is flexible.
  5. 5. The fire-protection element according to claim 3, wherein the filling foam is pressure-stable.
  6. 6 The fire-protection element according to any one of claims 1 to 5, wherein the frame comprises at least one material selected from the group consisting of cardboard, metal, glass fibers, basalt fibers, carbon fibers, .and ceramic fibers.
  7. 7. The fire-protection element according to any one of claims 1 to 6, wherein the frame comprises an intumescent material and has a higher temperature resistance than the honeycomb structure.
  8. 8. The fire-protection element according to any one of claims 1 to 7, wherein the fire-protection element has a cover plate.
  9. 9. The fire-protection element according to claim 8, wherein the cover plate comprises at least one material selected from the group consisting of cardboard, metal, glass fibers, basalt fibers, carbon fibers, and ceramic fibers.
  10. 10. The fire-protection element according to claim 8, wherein the cover plate comprises an intumescent m~terial and has a higher temperature resistance than the honeycomb structure.

Description

.. ] - FIRE PROTECTION ELEMENT The invention relates to a fire-protection element for sealing of openings, especially of line passages, that are routed through walls or ceilings, having a molded part of intumescent material. Fire-protection elements, which are capable of sealing line passages of non-fire,resistant pipes or cables in ceilings or warrs in the fire situation, in order to prevent the spread . of fire and smoke in buildings, are known in the most diverse configurations. The fire-protection elements usually contain an intumescent material containing expandable graphite, which is disposed around the lines, and a reinforcing inJay, which stabilizes the intumascent material. rn the known fire-protection elements, the expandable•graphite particles are activated b¥ heat at the surface, expand toward the fire and for the time being form an insulating crust. After some time, however, this becomes unstable and drops off. Thus the crust is no longer available as an insulating layer and the intumescent layer situated underneath is activ~ted. In this way, the fire-protection element bums away step-by~step and ensures protection for only a limited duration. The object of the invention is to create a fire-protection element in which a more stable crust is formed in the fire situation and which thereby has improved fire-protection properties. As the solution to the object, a frre~protection element is provided for sealing of openings, especially of line passages, that are routed through walls or ceilings, having a molded part of intumescent material, wherein the molded part has a honeycomb structure. Within the meaning of the inventionr a honeycomb structure is a three-cllmensfonal grid, which in a sectional pfane is constructed from one or more Date Regue/Date Received 2023-03-20 4 CA 03044783 2019-05-23 basic shapes in the form of polygons and extends along an axis that in particular is oriented perpendicular to the sectional plane. Preferably, the honeycomb structure has a uniform, hexagonal basic shape and in this way forms a kind of honey or bee comb. Preferably, the honeycombs do not have bottoms or tops, whereby the honeycomb structure is formed by several tubes disposed next to one another and having a cross-section in the form of a polygon. In principle, all basic shapes are possible that permit tiling, i.e. the seamless and overlap-free coverage of a plane by partial surfaces having the same shape. In this way, the honeycomb structure has a homogeneous wall thickness and thus homogeneous properties such as density, strength and fire-protection properties. The advantage of the inventive fire-protection element is that, by virtue of the grid-like honeycomb structure, the intumescent material is able to expand into the honeycomb and bond there with intumescent material of adjacent honeycomb structures. Hereby a crosslinked stable crust, which ensures reliable fire protection for a longer time, is formed in the fire situation. The molded part is preferably designed in pressure-stable manner in one direction and in flexible manner in all other directions oriented perpendicular to the first direction. As used in the invention, flexible means that the molded part may be compressed by a fitter, especially elastically. As used in the invention, pressurestable means that the molded part· can be loaded in one direction and opposite to it without substantial deformation of the molded part hereby, for example so that the molded part may be pushed by a fitter into an opening even against an active frictional force. In this way, the fire-protection element can be easily adapted to the opening to be sealed by a fitter on the spot by compressing it and at the same time may also be pushed under pressure into the opening. Alternatively, the molded part may be preferably designed in pressure-stable manner in two directions perpendicular to one another and in flexible manner in the direction perpendicular to these directions. Furthermore, the fire-protection element having at least one pressure-stable direction in the form of a plate may also be assembled as a wall or on walls. It is of advantage when the first direction is oriented parallel to the axial extent of the honeycomb structure. Thus the fire-protection element is pressure-resistant in the direction that extends parallel to the honeycomb walls of the honeycomb • CA 03044783 2019-05-23 structure. In this way, the honeycombs extend in axial direction through the opening, preferably perpendicular to the wall or ceiling of the opening, whereby lines may be routed through the fire-protection element without perforating honeycomb walls or damaging the honeycomb structure in the process. According to a preferred embodiment, the honeycomb structure is filled with a filling foam. The filling foam ensures smoke-tight sealing of the opening through the fire-protection element, by the fact that the honeycomb structure is filled, especially completely, by the filling foam.