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公开(公告)号：US10821377B2
公开(公告)日：2020-11-03
申请号：US16210030
申请日：2018-12-05
IPC分类号： B01D19/00 , F15B1/26 , F16K24/04 , F15B21/04 , B01D36/00 , B01D29/90 , B01D35/147 , B01D29/21 , B01D24/00 , B01D29/01 , B01D29/00 , B01D29/88
摘要： An air vent hole includes a substantially columnar hole main body portion, a first hole portion formed on the upper side of the hole main body portion, and a second hole portion formed on the lower side of the hole main body portion. Each of the first hole portion and the second hole portion partly has, in a cross section of the hole portion substantially orthogonal to a first direction that is a longitudinal direction of the hole main body portion, a cross-sectional area smaller than a cross-sectional area of a cross section of the hole main body portion substantially orthogonal to the first direction. A float inserted into the air vent hole is movable between a position where the float occludes the first hole portion and a position where the float occludes the second hole portion. The float occludes the first hole portion under the weight of the float. However, the float is pushed up by air. Furthermore, the float is formed of a material having a smaller specific gravity than a liquid to be filtered. Thus, the float is pushed up by the liquid to occlude the first hole portion.
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公开(公告)号：US10350527B2
公开(公告)日：2019-07-16
申请号：US15803958
申请日：2017-11-06
摘要： A filter device is provided with an impeding member that impedes a flow of a fluid in a hollow portion of a filter element or a hollow portion of an outflow portion that communicates the hollow portion of the filter element and an exterior of a filter case. Further, a lid member that covers an upper end of the filter case includes an external flow path that communicates the hollow portion of the filter element to the exterior of the filter case.
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