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    • 1. 发明申请
    • AIRFLOW HEADGEAR FOR A WELDING HELMET
    • 用于焊接螺栓的气流龙头
    • WO2009032823A1
    • 2009-03-12
    • PCT/US2008/075072
    • 2008-09-03
    • ILLINOIS TOOL WORKS INC.BECKER, WilliamDOBSON, Kenneth S.KWOK, Kui-chiu
    • BECKER, WilliamDOBSON, Kenneth S.KWOK, Kui-chiu
    • A61F9/06
    • A61F9/068
    • An airflow system is provided for a welding helmet. The airflow system includes an air intake (16) with a filter, a blower, and a battery mounted to the rear of headgear for a welding helmet. A manifold wraps around the side and front of the headgear and directs air from the- blower to the front of the headgear. The manifold includes a lower vent (26) for directing air onto a user's face and an upper vent (30) for directing air over a user's head toward the rear of the headgear. The vents are intended to create positive pressure to impede the entry of unfiltered air into the user's breathing zone. The manifold further includes a portion of flexible tubing (22) for adjusting the size of the airflow system in conjunction with adjustment of the headgear diameter. The airflow system generally conforms to the structure and shape of the headgear to maintain a location close to the user's head.
    • 为焊接头盔提供气流系统。 气流系统包括具有过滤器的进气口(16),鼓风机和安装在用于焊接头盔的头带后部的电池。 歧管围绕头盔的侧面和前部,并将空气从鼓风机引导到头带前部。 歧管包括用于将空气引导到使用者的脸上的下部通气口(26)和用于将空气引导到使用者的头部朝向头罩的后部的上部通气口(30)。 通风口旨在创造积极的压力,以阻止未过滤的空气进入使用者的呼吸区域。 歧管还包括柔性管道(22)的一部分,用于结合头带直径的调节来调节气流系统的尺寸。 气流系统通常符合头带的结构和形状,以保持靠近用户头部的位置。