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    • 2. 发明授权
    • Methods and apparatus for equalizing pressure between a refrigerating
compartment and ambient air
    • 用于均衡冷藏室和环境空气之间的压力的方法和装置
    • US5557942A
    • 1996-09-24
    • US334078
    • 1994-11-04
    • Sang U. KimSuk Bang
    • Sang U. KimSuk Bang
    • F25D17/04F25D21/14
    • F25D21/14F25D17/047F25D2321/146F25D2500/02
    • The pressure within a compartment of a refrigerator is kept equalized with ambient atmospheric air to facilitate the opening of the refrigerator door. An air passage capable of communicating the compartment with ambient air is closed when the compartment pressure is equal to the ambient air pressure, and is automatically opened when the compartment pressure become less than the ambient air pressure. The opening of the air passage is under the control of water contained in a trap portion of defrost water drain conduit of the refrigerator. The level of that trapped water fluctuates in height in response to differences in pressure between the compartment and ambient air, and the change in that height is used to open (or close) the air passage. The trapped water itself can be used to block the air passage, or a closure member floating on the water can block the air passage.
    • 冰箱隔室内的压力与环境大气保持一致,以方便开启冰箱门。 当室压力等于环境空气压力时,能够将隔室与环境空气连通的空气通道关闭,并且当舱室压力变得小于环境空气压力时,空气通道被自动打开。 空气通道的开口处于容纳在冰箱的除霜排水管道的收集部分中的水的控制下。 被捕获水的高度是响应于隔室和环境空气之间的压力差而在高度上波动的,并且该高度的变化用于打开(或关闭)空气通道。 被捕获的水本身可以用于阻挡空气通道,或者漂浮在水面上的封闭构件可以阻挡空气通道。