METHOD TO PREVENT FIRE SPARK OF BONFIRE FROM BEING DISPERSED, AIR PERMEABLE SHEET, AND FIRE SPARK DISPERSION PREVENTION TOOL

To provide a method to prevent fire spark of bonfire from being dispersed by efficiently collecting fire spark generated by bonfire to prevent the fire spark from being dispersed around, and an air permeable sheet used for the method.SOLUTION: A method to prevent fire spark of bonfire from being dis...

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Bibliographic Details
Main Authors WAKATSUKI KAORU, KAMIYA KYOKO, MIYASHIRO YUHO, WATANABE NORIMICHI
Format Patent
LanguageEnglish
Japanese
Published 17.10.2023
Subjects
BRAIDING
COTTON-WOOL
FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS
KNITTING
LACE-MAKING
LOOMS
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL
METHODS OF WEAVING
NON-WOVEN FABRICS
TEXTILES
TRIMMINGS
WADDING
WEAVING
WOVEN FABRICS
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Summary:To provide a method to prevent fire spark of bonfire from being dispersed by efficiently collecting fire spark generated by bonfire to prevent the fire spark from being dispersed around, and an air permeable sheet used for the method.SOLUTION: A method to prevent fire spark of bonfire from being dispersed covers an upper part of the bonfire by an air permeable sheet 5 formed of flame retardant fibers at a height position unexposed to flame across a prescribed range centering on the flame central axis, makes the upward hot air flow of the bonfire collide with the air permeable sheet 5 from the lower side, and collects fire spark (a) moving along the upward hot air flow from the bonfire in the air permeable sheet 5. The fire spark moving along the upward hot air flow is autonomously collected by making use of the upward hot air flow on the flame of the bonfire. An air blower is not required to collect the fire spark by making the upward hot air flow collide with the air permeable sheet 5, so that damage such as a burn can be prevented simply at low cost and bonfire can be safely enjoyed at ease.SELECTED DRAWING: Figure 2 【課題】焚火で発生する火の粉を効率良く捕集して外周に飛散しないようにした焚火の火の粉飛散防止方法、当該方法に用いる通気性シートを提供すること。【解決手段】焚火の火の粉飛散防止方法では、焚火の上部を、火炎に晒されない高さ位置において、火炎中心軸を中心とする所定の範囲に亘って、難燃繊維からなる通気性シート５で覆い、焚火の上昇熱気流を通気性シート５に下側から衝突させ、焚火から上昇熱気流に沿って移動する火の粉ａを通気性シート５に捕集する。焚火の火炎上の上昇熱気流を利用して、上昇熱気流に沿って移動する火の粉の自律的な捕集が行われる。上昇熱気流を通気性シート５に衝突させることによる火の粉の捕集は、送風装置を必要としないので、安価・簡便に火傷等の弊害を防止でき、安全に、安心して焚火を楽しむことができる。【選択図】図２
Bibliography:Application Number: JP20230053006