Abstract
This patent application has not been assigned to a company or institution.The following quote was obtained by the news editors from the background informa tion supplied bythe inventors: “In the field of intelligent cleaning, filtering elements are the most commonly used filteringstructures. The filtering element s used in the related art are all cylindrical filtering elements. Althoughthey are relatively large in size, filtering effect thereof is not significantly impr oved, and a larger space isoccupied.”
NETL
NSTL