Air cleaner having scavenger arrangement
AssigneeDonaldson Company, Inc.
InventorsGary R. Gillingham, Peter A. Betts, Daniel T. Risch, James C. Rothman, Fred H. Wahlquist
Life of this patent
Estimating the term…
Abstract
An air cleaner construction including a precleaner arrangement, a filter assembly and a scavenger arrangement is provided. In the precleaner arrangement, air directed into the air cleaner assembly is subjected to some particulate removal. The air from the precleaner arrangement is then directed into the filter assembly, for further particulate material. The scavenger arrangement is constructed and arranged to scavenge separated particulate material from both the precleaner arrangement and the filter assembly. A pulse jet cleaner assembly is provided to facilitate removal of particulate material from the filter assembly.
Claims19
An air cleaner construction comprising:
- (a) a filter arrangement including a housing having a bottom well and a sidewall arrangement;
- said bottom wall and sidewall arrangement defining a housing interior;
- said sidewall arrangement including a clean air aperture therein;
- (b) a first filter pack positioned within said filter arrangement and having an exterior filter surface and a clean air space;
- said first filter pack including a clean air exit therefrom;
- (c) a seal arrangement constructed and arranged to seal said filter pack within said housing interior and against said sidewall arrangement such that said clean air exit in said first filter pack is in air flow communication with a first air exit aperture in said housing sidewall arrangement;
- and,
- (d) a scavenger arrangement constructed and arranged to withdraw separated particulate material from said housing interior;
- (i) said scavenger arrangement including a first scavenger duct;
- said first scavenger duct including a first perforated section positioned within said housing interior and on said housing bottom wall;
- and
- (ii) said first scavenger duct first perforated section including scavenger flow perforations positioned above said housing bottom wall.
Dependencies are inferred from the claim text.