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    • 27. 发明授权
    • Activated charcoal filter layer for gas masks
    • 用于防毒面具的活性炭过滤层
    • US4992084A
    • 1991-02-12
    • US341091
    • 1989-04-20
    • Hasso Von BlucherErnest De Ruiter
    • Hasso Von BlucherErnest De Ruiter
    • A62B23/04A62B23/02B01J20/28
    • B01J20/28023A62B23/02B01J20/28004B01J20/28011B01J20/28019B01J20/28045B01J20/28057B01J20/28085
    • The activated charcoal filter layer for gas masks contains a highly air-permeable, three-dimensional carrier framework essentially stable in shape, formed of wires, monofilaments or stays, to which a layer of granular, particularly spherical activated charcoal particles with a diameter of 0.1 to 1 mm is affixed. The carrier framework can be composed of wires, monofilaments or stays, the distance between them being at least twice as great as the diameter of the activated charcoal particles. The carrier framework can also be a large-pore reticulated polyurethane foam which has a weight of 20 to 60 g/l and pores with a diameter of 1.5 to 3 mm. The carrier framework can furthermore consist of wire netting or wire mesh arranged in layers, as well as of plastic or wire spirals with a length equal to and up to 10 times their diameter, or of wires or monofilaments with a length of 2 to 10 mm, which are held by twisted metal or plastic wires and project perpendicular from this axis in the shape of a spiral staircase. In spite of a very slight pressure drop, the filter performance is excellent.
    • 用于防毒面具的活性炭过滤层包含由导线,单丝或撑条形成的基本上稳定的高度透气的三维载体框架,其中直径为0.1的颗粒状,特别是球形的活性炭颗粒层 至1毫米。 载体框架可以由电线,单丝或支柱组成,它们之间的距离是活性炭颗粒直径的至少两倍。 载体框架还可以是重量为20至60g / l和直径为1.5至3mm的孔的大孔网状聚氨酯泡沫。 载体框架还可以由布置成层的丝网或丝网以及长度等于或高达其直径的10倍的塑料或线螺旋构成,或者长度为2至10mm的线或单丝 它们由扭曲的金属或塑料线保持,并以螺旋形楼梯的形式从该轴垂直伸出。 尽管有非常轻微的压降,但是过滤器性能也非常好。