| 摘要 |
The double layer improves the fire resistance of the walls in accordance with the technological refrigeration mode of operation of the chambers. It shall be used in civil engineering in building of cold store and refrigeration chambers construction made of three-layer panels. The two layer external form is made of two sheets and the surface sheet (2) is perforated along its entire surface, the internal sheet being fitted on the intermediate layer (3) of the panel is corrugated made of chamfered sections (4) alternating in straight sections (5). The connection between the perforated and the corrugated sheet of the layer is made by the folded end sections of the surface sheet (2), sheet (2) and sections (5) of the corrugated sheet being parallel and fitted at some distance from each other. Air gaps (1) are formed between the perforated sheet (2) and the chamfered parts (4) of the corrugated sheet in which dry fire resistant materials (6, 7) are fitted. The dry fire resistant materials (6) fitted in the air gaps (1) on one of the sides of the panel are made with round cross section. On the other side of the panel the dry fire resistant materials (7) fitted in the air gaps (1) are made of four different densities and have triangular cross section forming a common triangular prism the chamfered sides of which are resting on the chamfered parts (4) of the corrugated sheet, and the horizontal part of the prism resting on the perforated sheet (2) of the layer. 3 claims, 3 figures
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