A filter insert for construction of an air filter in an automobile air streaming channel from a fluted filter comprising a number of piano accordion like folds useful for automobile air filtration

摘要

A filter insert (1,15) for construction of an air filter in an automobile air streaming channel from a fluted filter (2) from a number of piano-accordion like folds, with folds (3,4) with upper and lower fold edges (5,6,7,8), where the filter unit contains a filter mat of filter material, e.g. (10), and thick edges, e.g. (11,11'), for sealing the filter insert inside the streaming channel.