Patent ID: 7563295

Claim:
A filter which comprises: a filter housing which includes an essentially horizontal partition wall that divides said housing into a clean air chamber and a dust chamber, said partition wall defining a plurality of apertures; a plurality of filter bags which are connected to the partition wall and extend through respective apertures into the dust chamber; said filter housing defining an outlet channel, an inlet portion connected to the filter housing at a location level with lowermost ends of said filter bags for delivering dust-containing air to the dust chamber, from which clean air can be sucked through the plurality of filter bags into the air chamber and removed through the outlet channel, with dust accumulated in the dust chamber, said inlet means defining a first cross-sectional area at an inlet mouth thereof and a second, larger cross-sectional area between the inlet mouth and the filter housing, and a plurality of separate diffuser elements within the inlet portion for interrupting flow of dust-containing air approaching the filter housing slowing of dust particles by impact with the diffuser elements before entering the dust chamber.