Multistage high capacity and depth coalescing media system
AssigneeParker-Hannifin Corporation
InventorsPeter Popoff, Walter Stone
Life of this patent
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Abstract
A filter assembly having a first stage filter that filters particulates from fluid flowing through the filter and a second stage filter downstream of the first stage filter that coalesces water from the fluid. By providing the first stage filter upstream of the second stage filter, particulate filtration capacity and efficiency may be provided while protecting the second stage filter from particulates. Protecting the second stage filter from particulates allows for the life of the second stage filter to be extended while providing efficient emulsion removal in the filter assembly.
Claims20
A filter assembly configured to be coupled to a filter head, the filter assembly including:
- a housing circumscribing a central axis and having first and second ends and an internal chamber defined therebetween;
- and
- a filter element disposed within the internal chamber of the housing, the filter element including:
- a first stage filter circumscribing the central axis and defining a central cavity;
- a second stage filter downstream of the first stage filter, the second stage filter circumscribing the central axis and defining a central cavity;
- and
- a center tube disposed in the central cavity of the first and second stage filters,
- whereby fluid flows from the first end of the housing axially towards the second end into the first stage filter where particulates are filtered from the fluid, from the first stage filter axially into the second stage filter where water is coalesced from the fluid, and then from the second stage filter through the center tube towards the first end of the housing.
A filter assembly configured to be coupled to a filter head, the filter assembly including:
- a housing having upper and lower ends and a chamber defined therebetween;
- and
- a filter element disposed within the internal chamber of the housing, the filter element including:
- a first stage filter defining a central cavity and having an outer surface coupled to an inner surface of the housing;
- a second stage filter downstream of the first stage filter, the second stage filter defining a central cavity and having an outer surface coupled to an inner surface of the housing;
- a center tube disposed in the central cavity of the first and second stage filters and being coupled thereto, the center tube having upper and lower ends and defining a fluid flow path therethrough;
- and
- a third stage filter disposed at the lower end of the center tube.
A filter assembly configured to be coupled to a filter head, the filter assembly including:
- a housing having first and second ends and a chamber defined therebetween;
- and
- a filter element disposed within the internal chamber of the housing, the filter element including:
- a first stage filter defining a central cavity and being disposed in the internal chamber proximate the first end for removing particulates from fluid flowing through the filter element;
- a second stage filter defining a central cavity and being disposed in the internal chamber proximate the second end for coalescing water in the fluid flowing through the filter element;
- and
- a third stage filter disposed to receive fluid from the second stage filter and discharge the fluid towards the first end while allowing coalesced water droplets to move downward.
Dependencies are inferred from the claim text.