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    • 9. 发明申请
    • Automatic flooding protection for underground ventilation ducts
    • 地下通风管道自动淹水保护
    • US20090185864A1
    • 2009-07-23
    • US12321263
    • 2009-01-16
    • Louis A. Waters, JR.
    • Louis A. Waters, JR.
    • E02B7/50
    • E21F1/08
    • Embodiments are described for preventing downward flow of substantial surface water into an underground ventilation duct communicating upwardly to a ground surface opening. The embodiments comprise a support having a top opening and an opening in a lower portion above a floor. The opening in the lower portion is for venting communication with a proximate portion of the ventilation duct. The support supports at least one seat and paired buoyant gate set. The seat is mounted perpendicularly relative to the gate and a portion of a passageway under the seat for fluidly communicating beyond such portion to the top opening of the support and to the proximate portion of the ventilation duct. The buoyant gate is positioned lower than the seat and the passageway, is of sufficient size to block the passageway, and is responsive to water rising in the support by floatingly pivoting upwardly until engaging the seat, thereby blocking the passageway. In an embodiment, the seat of at least one set is mounted under the top opening spaced from one of the opposing sides a horizontal distance nominally equal to a fraction applied to a length for the particular opening, the fraction having the numerator 1 and a denominator which is the sum of 1 plus the number of seat and gate sets, and the buoyant gate has a seat engagement height nominally equal to the same fraction applied to the same opening length.
    • 描述了用于防止实质地表水向下流动到与地面开口向上连通的地下通风管道中的实施例。 实施例包括具有顶部开口和位于地板上方的下部中的开口的支撑件。 下部的开口用于与通风管道的最近部分通气。 支撑件支撑至少一个座椅和配对的浮力门组。 座椅相对于门垂直地安装,并且在座椅下面的通道的一部分用于流体地连通超过这种部分到支撑件的顶部开口和通风管道的最近部分。 浮力门位于座位和通道的下方,具有足够的尺寸以阻挡通道,并且响应于通过向上浮动地向上浮动的水直到接合座,从而阻塞通道。 在一个实施例中,至少一个组的座被安装在顶部开口的下方,与相对侧之一间隔开一个标称等于施加到特定开口的长度的分数的水平距离,具有分子1的分数和分母 这是1加上座椅和门组的数量的总和,浮动门具有名义上等于施加到相同开口长度的相同分数的座椅接合高度。