Liquid treatment cartridge, set of such cartridges and method of manufacturing it

Patent metadata

Field	Value
Publication number	US-10865125-B2
Application number	US-201515541685-A
Country	US
Kind code	B2
Filing date	Jan 7, 2015
Priority date	Jan 7, 2015
Publication date	Dec 15, 2020
Grant date	Dec 15, 2020

Abstract

A liquid treatment cartridge includes a housing, the housing including a housing part forming an axial end of the housing and including a connecting head at the axial end of the housing. The connecting head includes at least three liquid ports, each at an end of a respective channel defined by the housing part. The connecting head is configured for insertion into a head part of a liquid treatment system such that the liquid ports of the connecting head are in sealed liquid communication with respective liquid ports in the head part. The liquid treatment cartridge includes at least one separate flow conductor part on the inside of the housing, attached to the housing part and including at least one conduit for conducting liquid so as to separate interior ends of at least two of the channels from those of at least one other of the channels.

First claim

The invention claimed is:

1. A liquid treatment cartridge comprising:
a housing, the housing including a housing part forming an axial end of the housing and including a connecting head at the axial end of the housing,
wherein the connecting head includes at least three liquid ports, each at an end of a respective channel defined by the housing part,
wherein the connecting head is configured for insertion into a cavity of a head part of a liquid treatment system having liquid ports such that the liquid ports of the connecting head are in sealed liquid communication with respective liquid ports in the head part;

a liquid treatment part arranged in the housing, wherein the liquid treatment part comprises at least one component for treating a liquid; and
at least one separate flow conductor part on the inside of the housing, attached to the housing part and including at least one conduit for conducting liquid so as to separate interior ends of at least two of the channels from those of at least one other of the channel, wherein the at least three liquid ports at ends of respective channels defined by the housing part include at least a fourth liquid port.

2. The liquid treatment cartridge according to claim 1 , wherein the housing part includes a single moulded body in which the liquid ports and channels are formed.

3. The liquid treatment cartridge according to claim 1 , wherein at least one of the at least one flow conductor parts is plugged into an interior end of at least one of the channels.

4. The liquid treatment cartridge according to claim 1 ,
wherein the housing includes a vessel, and
wherein the housing part forms a cap closing off the vessel at an axial end of the vessel.

5. The liquid treatment cartridge according to claim 1 ,
wherein the connecting head projects in axial direction with respect to a remainder of the housing part.

6. The liquid treatment cartridge according to claim 1 ,
wherein the at least one component for treating a liquid comprises a hollow, liquid-permeable liquid treatment component, and
wherein at least one of the flow conductor parts is comprised in the liquid treatment part and arranged to conduct liquid radially through the liquid-permeable liquid treatment component.

7. The liquid treatment cartridge according to claim 1 ,
wherein the liquid treatment part includes a bed of liquid treatment material, and
wherein at least one of the flow conductor parts includes a conduit for conducting liquid through the interior of the housing between the housing part and an axial location separated from the housing part by at least a section of the bed.

8. The liquid treatment cartridge according to claim 1 ,
wherein the at least one flow conductor parts are arranged to separate interior ends of at least two of the channels from each other and from interior ends of at least a further one of the channels.

9. The liquid treatment cartridge according to claim 8 , wherein the at least one flow conductor parts are arranged to separate the interior ends of the at least two channels from each other and from each of at least two other ones of the channels, and
wherein at least two of the at least two other channels are in direct fluid communication.

10. The liquid treatment cartridge according to claim 8 , wherein the at least one flow conductor parts are arranged to separate interior ends of at least four of the channels from each other, and
wherein the liquid treatment cartridge includes at least one part for dividing a flow of liquid received through one of the four channels into at least two sub-flows conducted to different locations within the cartridge.

11. The liquid treatment cartridge according to claim 1 ,
wherein the liquid treatment part comprises at least one compartment including at least a medium for treatment of liquid by ion exchange, and
wherein the liquid treatment cartridge is arranged to conduct at least one of a flow of liquid received through at least one of the liquid ports and a sub-flow of liquid obtained by dividing the flow of liquid into sub-flows through the interior of the housing so as to by-pass at least a section of the at least one compartment including at least the medium for treatment of liquid by ion exchange.

12. The liquid treatment cartridge according to claim 1 ,
wherein the interior end of at least one of the channels is provided within at least one of the other channels.

13. The liquid treatment cartridge according to claim 12 , wherein at least end sections at the interior ends of the channels are arranged concentrically.

14. The liquid treatment cartridge according to claim 1 ,
wherein at least radially inner ones of the channels have interior ends directed essentially axially into the interior of the housing.

15. The liquid treatment cartridge according to claim 1 ,
wherein a majority of the liquid ports are provided in surface sections of the connecting head facing in a direction at an angle to an axial direction of the housing.

16. The liquid treatment cartridge according to claim 15 , wherein the surface sections are essentially planar.

17. The liquid treatment cartridge according to claim 15 , wherein the surface sections are inclined with respect to the axis, such that the connecting head tapers towards the axial end of the housing.

18. A liquid treatment system including at least one head part and at least one replaceable liquid treatment cartridge according to claim 1 .

19. A liquid treatment system including at least one head part and at least one replaceable liquid treatment cartridge according to claim 1 .

20. The liquid treatment cartridge according to claim 1 , wherein the separation between interior ends of at least two of the channels and those of at least one other of the channels is such that at least a sub-flow of liquid emerging from an interior end is carried away from the housing part and returns to an interior end separated from the interior end from which it has emerged after passing through the liquid treatment part arranged in the housing.

21. A liquid treatment cartridge including a housing, in which a liquid treatment part is arranged, the housing including a housing part forming an axial end of the housing and including a connecting head at the axial end of the housing,
wherein the liquid treatment part comprises at least one component for treating a liquid,
wherein the connecting head includes at least one liquid port and is configured for insertion into a cavity of a head part of a liquid treatment system such that the liquid port(s) of the connecting head are in sealed liquid communication with respective liquid ports in the head part,
wherein the connecting head is insertable in axial direction into a cavity of a receiving part of the head part movably journalled with respect to a housing of the head part, and
wherein the connecting head includes at least one alignment part for axially aligning the receiving part with the liquid treatment cartridge during insertion of the connecting head into the cavity,
the alignment part being provided on an external surface of the connecting head for insertion into a groove of the receiving part when the connecting head is inserted into the cavity,
wherein the alignment parts for insertion into the groove of the receiving part are arranged to contact the groove at multiple axial locations simultaneously.

22. The liquid treatment cartridge according to claim 21 , wherein at least one of the alignment parts is a r

Assignees

• Brita Gmbh

Inventors

• Zöller Jochen

Classifications

• B01D35/301 Primary

  Constructions of two or more housings (B01D35/12 takes precedence) · CPC title

• C02F1/44

  by dialysis, osmosis or reverse osmosis {(general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268)} · CPC title

• C02F1/42

  by ion-exchange (ion-exchange in general B01J) · CPC title

• B01D35/30

  Filter housing constructions · CPC title

• C02F9/00 Primary

  Multistage treatment of water, waste water or sewage · CPC title