Air filtration technology can not be separated from the air filter theory research and development. Filter theory, particularly the air filter theory as early as the 19th century has begun, and the air-edge filter research and development is only 20 years of history, filtered by the theory of the early classics to modern filtration theory and the theory of micro filtration filter theory.
On the movement of tiny particles of understanding as early as in the early 19th century, when the botanist Brown observed the fine particles suspended in liquid in the movement (that is, Brownian motion); in 1922, Freundlich development of the aerosol filtration understanding of the law, put forward 0.1 ~ 0.2μm in the radius of maximum penetration of aerosol particles exist; in 1931, Albrecht took the lead on the air through a single fiber cylinder movement has been studied to establish the theory of Albrecht and then Sell them the necessary improvements.
In 1952, Davies [10] the proliferation of inertia and the retention mechanism 3 and combine with that formula, so as to establish a new filter theory - the theory isolated fiber; in 1958 Friedlander [11] and in 1967 Yoshioka [12] Development Independent fiber theory, a greater number of their cases, the particle inertia, diffusion and deposition Effect of gravity and the edge filter blocking phenomenon has been studied and summarized; in 1967, Pickaar and Clarenburg trying to put a micro fiber filter structure Mathematical Theory; 1987 Pich and Brown in 1993 in his monograph describes the latest developments in filter theory. Thomas, and so on [14] on the block have a filter in the conduct of the air filter theory and experimental research in the filter cake exist, filtration efficiency and pressure loss calculation model. In recent years, many foreign scholars on the edge filter the air in the dust where the performance and efficiency of the cake and the formation mechanism of the theoretical and experimental simulation, and achieved certain results [15 to 17].
作者:S-Blog