Plenum pulsed filter vent
AssigneeMcNeilus Truck and Manufacturing, Inc.
InventorsR. James Horton, James D. Ellis
Life of this patent
Estimating the term…
Abstract
A filter vent system and method for separating entrained airborne particulate matter from the conveying fluid is disclosed, particularly as it relates to filling a storage vessel. The filter system employs a simplified, yet more efficient filter cleaning arrangement, in which the entire clean air plenum on the downstream side of a filter array of one or more filter units is periodically pulsed with a large burst or pulse of relatively high pressure air from a single source which rapidly raises the plenum pressure to, in turn, produce a temporary pulsed flow reversal in the filter units which blasts through the filter pores to displace particulate matter collected on the upstream side of all of the filter units alike thereby cleaning or re-generating the filter surfaces.
Claims25
A filter vent system for separating entrained particulate matter from a conveying fluid in a vessel for containing said particulate matter, the system comprising:
- (a) a filtration zone, including a common clean air plenum defined within said filtration zone upstream of a vent outlet by a filter-supporting partition structure;
- (b) a plurality of filter units carried by said partition structure, each said filter unit having a downstream side continuously open to said common clean air plenum and an upstream side on which said particulate matter collects;
- and
- (c) a plenum pulsing system including a source of high pressure air connected to direct air into said common clean air plenum for applying a burst of high pressure air to pulse the volume of said plenum generally on a periodic basis to clean all of said filter units generally at the same time by inducing common short term rapid back flow.
A method of operating a filter vent system having a plurality of filter units having each upstream sides and having downstream sides which lead to a common vent outlet plenum comprising the step of applying a high volume burst of high pressure air to said common vent outlet plenum generally on a periodic basis sufficient to clean said filter units through rapid back flow.
Dependencies are inferred from the claim text.