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US 11,383,188 B2Granted
Filter capsule and method of use
AssigneePall Corporation
InventorsNeil J. Walker, Charles N. Rothwell, Robert Knowles
Life of this patent
Estimating the term…
Abstract
A module alignment element, and a filter capsule including the module alignment element, a method of filtering fluid using the filter capsule, and a system including the filter capsule, are disclosed.
Claims14
A filter capsule comprising
- (a) a hollow filter capsule housing having an upper hollow housing portion including an inlet, the upper hollow housing portion including an upper bowl portion, a secondary upper bowl portion including a secondary upper bowl portion fluid flow port and a secondary upper bowl portion inner diameter;
- an intermediate hollow housing portion;
- a lower hollow housing portion including an outlet, the lower hollow housing portion including a lower bowl portion, a secondary lower bowl portion including a secondary lower bowl portion fluid flow port;
- and defining a fluid flow path between the upper hollow housing portion and the lower hollow housing portion;
- (b) a filter module comprising a hollow cylindrical porous filter arranged between an inner core and an outer cage, wherein the filter module is arranged in the hollow filter capsule housing across the fluid flow path, the filter module having an upper end cap with a central opening and a lower end cap with a central opening;
- (c) a module alignment element, arranged in, and moveable axially in, the upper hollow housing portion and arranged to contact the upper end cap of the filter module, the module alignment element comprising an open top end, and a closed bottom end comprising a base, the open top end and the closed bottom end being connected by a plurality of spaced apart vertically arranged struts, the open top end including an outer side wall including a circumferential groove containing a resilient ring, the circumferential groove including two or more flattened portions formed in the side wall;
- the base comprising a plurality of horizontally arranged outwardly extending ears, the plurality of horizontally arranged outwardly extending ears extending beyond the secondary upper bowl portion inner diameter, wherein the plurality of horizontally arranged outwardly extending ears can contact an inner surface of the secondary upper bowl portion forming the inner diameter;
- and,
- (d) a hollow cylindrical end cap, arranged in the lower hollow housing portion and contacting the lower end cap of the filter module, the hollow cylindrical end cap comprising a side wall including at least one circumferential groove containing a hollow end cap resilient ring, the hollow end cap resilient ring providing a seal when the hollow cylindrical end cap is arranged in the lower hollow housing portion.
6 more elements
A method of filtering fluid, the method comprising:
- passing fluid through a filter capsule comprising
- (a) a hollow filter capsule housing having an upper hollow housing portion including an inlet, the upper hollow housing portion including an upper bowl portion, a secondary upper bowl portion including a secondary upper bowl portion fluid flow port and a secondary upper bowl portion inner diameter;
- an intermediate hollow housing portion;
- a lower hollow housing portion including an outlet, the lower hollow housing portion including a lower bowl portion, a secondary lower bowl portion including a secondary lower bowl portion fluid flow port;
- and defining a fluid flow path between the upper hollow housing portion and the lower hollow housing portion;
- (b) a filter module comprising a hollow cylindrical porous filter arranged between an inner core and an outer cage, wherein the filter module is arranged in the hollow filter capsule housing across the fluid flow path, the filter module having an upper end cap with a central opening and a lower end cap with a central opening;
- (c) a module alignment element, arranged in, and moveable axially in, the upper hollow housing portion and arranged to contact the upper end cap of the filter module, the module alignment element comprising an open top end, and a closed bottom end comprising a base, the open top end and the closed bottom end being connected by a plurality of spaced apart vertically arranged struts, the open top end including an outer side wall including a circumferential groove containing a resilient ring, the circumferential groove including two or more flattened portions formed in the side wall;
- the base comprising a plurality of horizontally arranged outwardly extending ears, the plurality of horizontally arranged outwardly extending ears extending beyond the secondary upper bowl portion inner diameter, wherein the plurality of horizontally arranged outwardly extending ears can contact an inner surface of the secondary upper bowl portion forming the inner diameter;
- and,
- (d) a hollow cylindrical end cap arranged in the lower hollow housing portion and contacting the lower end cap of the filter module, the hollow cylindrical end cap comprising a side wall including at least one circumferential groove containing a hollow end cap resilient ring, the hollow end cap resilient ring providing a seal when the hollow cylindrical end cap is arranged in the lower hollow housing portion.
7 more elements
Dependencies are inferred from the claim text.