发明名称 |
Filter medium for air filter and filter unit |
摘要 |
A filter medium for an air filter collecting dust in an air flow has a principal collection layer including a porous polytetrafluoroethylene film. A surface of the filter medium is provided with a plurality of embossed projections. Preferably, a processed filter medium maintains a zigzag shape by pleating an unprocessed filter medium to create mountain folds and valley folds. Preferably, an air filter unit includes such a processed filter medium and a frame body holding the processed filter medium. |
申请公布号 |
US9242201(B2) |
申请公布日期 |
2016.01.26 |
申请号 |
US201214241029 |
申请日期 |
2012.08.30 |
申请人 |
Daikin Industries, Ltd. |
发明人 |
Bao Li;Kobayashi Makoto;Morita Jun;Sakano Tatsumi;Kitayama Osamu;Hara Satoshi;Niinuma Hitoshi |
分类号 |
B01D46/52;B01D39/16;B01D46/54;B32B5/02;B32B5/26;B32B7/12 |
主分类号 |
B01D46/52 |
代理机构 |
Global IP Counselors |
代理人 |
Global IP Counselors |
主权项 |
1. A filter medium for an air filter collecting dust in an air flow, the filter medium comprising:
a principal collection layer including a porous polytetrafluoroethylene film, a pre-collection layer located at an upstream side of the air flow relative to the principal collection layer, the pre-collection layer being configured to collect a part of dust in the air flow; and an air-permeable cover layer positioned as an outermost layer of the filter medium at the upstream side of the air flow, the air-permeable cover layer allowing dust in the air flow to pass therethrough, and the air-permeable cover layer suppressing deformation of a surface of the filter medium by pressing force from outside, a surface of the filter medium being provided with a plurality of embossed projections, the filter medium being maintained in a zigzag shape obtained by folding so as to create mountain folds and valley folds, and the plurality of embossed projections being provided between each adjacent mountain fold and valley fold. |
地址 |
Osaka JP |