Self cleaning filter system and method
AssigneeAsia Connection LLC
InventorReza Afshar
Life of this patent
Estimating the term…
Abstract
A filter apparatus includes a filter, such as a cartridge, positioned within a housing. The filter apparatus has multiple ports and valves, so as to allow a user to easily switch between a filtration mode of filtering fluids and a maintenance mode of cleaning the filter. The filter can have a filter substrate in a housing and after filtrate builds up on the substrate, the substrate can be cleaned by directing a spray of fluid, such as from a ring of nozzles at the top of the housing, onto the substrate. A maintenance port can be provided to drain the debris washed from the substrate. The filter can switch between a backwash mode and a filtration mode.
Claims13
A fluid filtration apparatus, comprising:
- a housing having an interior and an upper section, a lower section beneath the upper section and a central cannister section enclosing a central cannister with an inside surface, between the upper section and the lower section, the central cannister defining a downward direction along a vertical longitudinal axis from a top of the central cannister to a bottom of the central cannister;
- a filtration inlet port and a filtration outlet downstream from the filtration inlet port in fluid communication with the interior;
- a porous filtration structure extending in the downward direction within the central cannister, between the filtration inlet and the filtration outlet, and having an outside surface extending in the downward direction, facing the inside surface of the central cannister;
- a nozzle assembly having an inlet, the nozzle assembly having a plurality of nozzles, each tangential to the outside surface of the porous filtration structure, wherein the nozzles have an outlet positioned above the porous filtration structure and point downward, aimed in a direction tangential to the outside surface of the porous filtration structure, the nozzles positioned and adapted to spray multiple jets of a fluid downwards, tangentially onto an outer surface of the filtration structure at a volume and direction effective to downwardly dislodge material from the filtration structure in a maintenance mode of operating the filtration apparatus.
Dependencies are inferred from the claim text.