Customizable multi-stage water treatment system

Patent metadata

Field	Value
Publication number	US-10759675-B2
Application number	US-201816184717-A
Country	US
Kind code	B2
Filing date	Nov 8, 2018
Priority date	Nov 12, 2012
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A customizable multi-stage fluid treatment assembly typically includes a connector, a plurality of cartridges, and a cap. The plurality of cartridges have a treatment medium spaced within an interior volume of the individual cartridges, between the ends thereof. The ends of the plurality of cartridges are configured to receive a fluid, bring the fluid into operative contact with the treatment medium, and dispense the fluid from the opposing end of the cartridge. The connector is coupled with one end of the plurality of cartridges and has an inlet and an outlet for receiving and dispensing the fluid to and from an appliance. The cap is coupled with the other end of the plurality of cartridges, enclosing the fluid treatment assembly, which is configured to be received in a cavity of an appliance. The cartridges of the plurality of cartridges may be individually replaced with cartridges to meet customized needs.

First claim

What is claimed is:

1. A water filter comprising:
a connector,
a cap, and
a water treatment cartridge comprising elements of:
a first end;
a second end;
a sidewall extending between the first end and the second end, enclosing an interior volume defined by an interior facing wall and wherein a water channel flow path segment is formed within the sidewall that extends through the sidewall and extends between the first end and the second end;
a water treatment medium spaced within the interior volume;
a treated water delivery aperture that transmits treated water out of the water treatment cartridge and into a treated water receiving aperture within the connector; and
a first locking configuration disposed on an exterior facing surface of the first end and a second locking configuration disposed on an exterior facing surface of the second end such that the first end is configured to directly engage a corresponding first locking configuration on the connector and the second end is configured to directly engage a corresponding second locking configuration that is different than the first locking configuration.

2. The water filter of claim 1 , wherein the water treatment cartridge is configured to permit a water flow to return to the first end and pass through the water treatment medium, creating a closed circuit to return the water flow to an appliance, and wherein the water channel flow path segment is a cylindrical shape and has a diameter configured to reduce the rate at which the water flow travels through the water channel flow path segment and the closed circuit;
wherein the water filter comprises a plurality of water filter treatment cartridges configured to be engaged and disengaged with one another by hand and without the use of tools;
wherein the plurality of water filter treatment cartridges are coaxially spaced within an exterior housing of the water filter;
wherein the water filter is configured to be engaged and disengaged with the appliance by hand and without the use of tools; and
wherein each of the plurality of cartridges comprises:
a first end;
a second end;
a sidewall extending between the first end and the second end, enclosing an interior volume defined by an interior facing wall and wherein a water channel flow path segment is formed within the sidewall that extends through the sidewall and extends between the first end and the second end;
a water treatment medium spaced within the interior volume;
a treated water delivery aperture that transmits treated water out of the water treatment cartridge and into a treated water receiving aperture within the connector; and
a first locking configuration disposed on an exterior facing surface of the first end and a second locking configuration disposed on an exterior facing surface of the second end such that the first end is configured to directly engage a corresponding first locking configuration on the connector and the second end is configured to directly engage a corresponding second locking configuration that is different than the first locking configuration.

3. The water filter of claim 2 , wherein the second locking configuration comprises an extension that extends from the second end and wherein the second end further comprises a flow passage that permits water to travel between the treatment medium spaced within the water treatment cartridge in an opposite direction than the water flowing through the channel segment and wherein one of the plurality of water filter treatment cartridges contains a different water treatment media from another of the plurality of water filter treatment cartridges.

4. The water filter of claim 1 , wherein the water treatment cartridge further comprises an extension that extends from the second end of the water treatment cartridge and a flow passage that permits water to travel between the water treatment medium spaced within the water treatment cartridge in an opposite direction than a water flow through the water channel flow path segment.

5. The water filter of claim 4 , wherein the second end of the water treatment cartridge comprises a threaded extension receiving aperture that receives water flow into the water treatment cartridge.

6. The water filter of claim 5 , wherein the extension is threaded and engaged with an O-ring.

7. The water filter of claim 5 , wherein the water channel flow path segment is proximate the exterior facing surface of the water treatment cartridge.

8. The water filter of claim 1 , wherein the water treatment medium is sized and spaced within the interior volume to form a gap between the interior facing surface and the water treatment medium and a first end facing surface is engaged with a top cover that directs water radially outward toward the sidewall of the water treatment cartridge; thereafter the water is directed radially inward and through the water treatment medium and into a hollow central conduit that delivers a treated water flow to an outlet.

9. The water filter of claim 1 , wherein the water treatment cartridge is a first water treatment cartridge, and the water filter comprises a second water treatment cartridges comprising all of the elements of the first water treatment cartridge,
wherein the first water treatment cartridge is a base water treatment cartridge and wherein the water treatment medium is a base water treatment medium;
wherein the second water treatment cartridge is an additional water treatment cartridge and wherein the water treatment medium of the second water treatment cartridge is an additional water treatment medium; and
wherein the base water treatment cartridge matingly engages and disengages the connector by hand and without the use of tools using the first locking configuration and the base water treatment cartridge matingly engages and disengages the additional water treatment cartridge by hand and without the use of tools using the second locking configuration and wherein the first locking configuration and the second locking configuration arrange each of the base water treatment cartridge and the additional water treatment cartridge at a specific stage of water treatment.

10. The water filter of claim 1 , wherein the water treatment cartridge is cylindrically shaped and the water channel flow path segment has an arch-shaped cross-section within the water treatment cartridge;
wherein the water treatment cartridge is a base water treatment cartridge, and the water filter comprises at least one additional water treatment cartridge having all of the elements of the base water treatment cartridge;
wherein the connector, the cap, the base water treatment cartridge and the at least one additional water treatment cartridge are matingly engaged and disengaged by hand and without the use of tools and also form the water filter when the connector, the cap, the base water treatment cartridge and the additional water treatment cartridge are engaged with one another and the water filter engages and disengages an appliance by hand and without the use of tools.

11. The water filter of claim 1 , wherein the water treatment medium is chosen from one or more of the group consisting of: activated carbon particles, a carbon powder, a vitamin treatment material, aluminosilicate material, an organic acid, inorganic acid, particles sintered with a plastic binder, carbon particles coated with a silver material, a block of porous carbon, an ion exchange material, resin beads, flat filtration membranes, fibrous filtration structures, zeolite particles, zeolite coatings, alumina, diatomaceous earth, polyethylene, charged-modified webs, melt-blown webs, and microfiber glass.

12. The water filter of claim 1 , wherein

Assignees

• Whirlpool Co

Inventors

• Patera Ginger Elayne
• Kuehl Steven John
• Senninger Mark M

Classifications

• C02F1/28

  by sorption (using ion-exchange C02F1/42; sorbent compositions B01J) · CPC title

• B01D63/00

  Apparatus in general for separation processes using semi-permeable membranes · CPC title

• C02F5/105

  combined with inorganic substances · CPC title

• C02F1/688

  Devices in which the water progressively dissolves a solid compound · CPC title

• C02F2201/004

  Seals, connections · CPC title