Integrated composite filter cartridge and water purifying system having same

Patent metadata

Field	Value
Publication number	US-10399011-B2
Application number	US-201515550015-A
Country	US
Kind code	B2
Filing date	Apr 30, 2015
Priority date	Feb 9, 2015
Publication date	Sep 3, 2019
Grant date	Sep 3, 2019

Abstract

Disclosed are an integrated composite filter cartridge (200) and a water purifying system (300) having same. The integrated composite filter cartridge (200) comprises: an outer shell (20), wherein a chamber (21) is defined in the outer shell (20), and the outer shell (20) is provided with a raw water inlet (22), a pre-treated water outlet (23), a pre-treated water inlet (24), a purified water outlet (25) and a waste water outlet (26) which are in communication with the chamber (21); a pre-treatment filter cartridge (100); a central pipe (30); a filter membrane (40); and a control member, which is connected to the pre-treated water outlet (23) and the pre-treated water inlet (24). When the integrated composite filter cartridge (200) is used for the first time, the control member switches on the raw water inlet (22) and the pre-treated water outlet (23) and switches off the pre-treated water inlet (24).

First claim

What is claimed is:

1. An integrated composite filter cartridge, comprising:
a housing defining a chamber therein, and having a raw-water inlet, a pretreated-water outlet, a pretreated-water inlet, a pure-water outlet and a waste-water outlet each in communication with the chamber;
a pretreatment filter cartridge mounted in the chamber and extending in an axial direction of the chamber, and the pretreatment filter cartridge comprising:
a mounting pipe configured to have a hollow cylinder shape extending in an up-and-down direction;
a filter layer fitted over the mounting pipe, a water input passage in communication with the raw-water inlet being defined between the filter layer and the housing, and a pretreated-water output passage in communication with the pretreated-water outlet being defined between the filter layer and the mounting pipe;
a central pipe mounted in the mounting pipe and extending in an axial direction of the mounting pipe, the central pipe being spaced apart from the mounting pipe to form a filter chamber in communication with the pretreated-water inlet, an end of the central pipe being in communication with the pure-water outlet, and the central pipe having a water input hole in a side wall thereof;
a filter membrane disposed in the filter chamber and winded around an outer circumferential wall of the central pipe, a waste-water passage being defined between an outer circumferential wall of the filter membrane and an inner circumferential wall of the mounting pipe, and the waste-water passage being in communication with the waste-water outlet;
a control member connected to the pretreated-water outlet and pretreated-water inlet, and configured to communicate the raw-water inlet with the pretreated-water outlet and to close the pretreated-water inlet when the integrated composite filter cartridge is used for the first time, wherein the control member has one or more control valves.

2. The integrated composite filter cartridge according to claim 1 , wherein two filter layers are provided and winded around the mounting pipe respectively, the filter layer located at an outer circle is configured as a polypropylene (PP) cotton, and the filter layer located at an inner circle is configured as a carbon rod.

3. The integrated composite filter cartridge according to claim 1 , wherein the filter layer comprises a first filter layer, a second filter layer and a third filter layer fitted over the mounting pipe successively from outside to inside, the first filter layer is configured as a PP cotton, the second filter layer is configured as an activated carbon fiber winding layer, the third filter layer is configured as one of the PP cotton, a microfiltration membrane or an ultrafiltration membrane, the water input passage in communication with the raw-water inlet is defined between the first filter layer and the housing, and the pretreated-water output passage in communication with the pretreated-water outlet is defined between the third filter layer and the mounting pipe.

4. The integrated composite filter cartridge according to claim 1 , wherein the pretreatment filter cartridge further comprises:
an upper-end cap disposed to a periphery of an upper end of the mounting pipe;
a lower-end cap disposed to a periphery of a lower end of the mounting pipe, and the filter layer being disposed between the upper-end cap and the lower-end cap;
a support pipe fitted over the mounting pipe and located between the upper-end cap and the lower-end cap, the filter layer being disposed between an outer circumferential surface of the mounting pipe and an inner circumferential surface of the support pipe, and the support pipe having a plurality of through holes communicating inside with outside.

5. The integrated composite filter cartridge according to claim 4 , wherein the pretreatment filter cartridge further comprises an inner pipe fitted over the mounting pipe, an inner circumferential surface of the inner pipe is spaced apart from the outer circumferential surface of the mounting pipe, an upper end of the inner pipe abuts against the upper-end cap, a lower end of the inner pipe abuts against the lower-end cap, the filter layer is fitted over the inner pipe, and the inner pipe has a plurality of water-passing holes communicating inside with outside.

6. The integrated composite filter cartridge according to claim 1 , wherein the raw-water inlet is configured as a single hole, the pretreated-water outlet and the pretreated-water inlet are configured to be in a nested arrangement, the pretreated-water inlet is nested within the pretreated-water outlet, the pure-water outlet and the waste-water outlet are configured to be in a nested arrangement, and the pure-water outlet is nested within the waste-water outlet.

7. The integrated composite filter cartridge according to claim 1 , wherein the filter membrane is configured as a reverse osmosis membrane, an ultrafiltration membrane or a nanofiltration membrane.

8. The integrated composite filter cartridge according to claim 1 , wherein the control member is further configured to recognize whether the integrated composite filter cartridge is used for the first time.

9. The integrated composite filter cartridge according to claim 1 , wherein the control member is further configured to communicate the pretreated-water outlet with the pretreated-water inlet when the integrated composite filter cartridge is not used for the first time.

10. The integrated composite filter cartridge according to claim 1 , wherein the control member comprises an anti-counterfeiting chip, the anti-counterfeiting chip configured to automatically recognize whether the integrated composite filter cartridge is used for the first time.

11. The integrated composite filter cartridge according to claim 10 , wherein the control member further comprises:
a first control valve disposed between the pretreated-water outlet and the pretreated-water inlet and configured to switch on or off communication between the pretreated-water outlet and the pretreated-water inlet; and
a second control valve disposed between the pretreated-water outlet and a concentrated-flushing-water outlet and configured to switch on or off communication between the pretreated-water outlet and the concentrated-flushing-water outlet said concentrated-flushing-water outlet being in communication with the waste-water outlet.

12. The integrated composite filter cartridge according to claim 11 , wherein when the anti-counterfeiting chip recognizes that the integrated composite filter cartridge is used for the first time, the first control valve is deactuated and the second control valve is actuated.

13. The integrated composite filter cartridge according to claim 11 , wherein when the anti-counterfeiting chip recognizes that the integrated composite filter cartridge is not used for the first time, the first control valve is actuated and the second control valve is deactuated.

Assignees

• Foshan Shunde Midea Water Dispenser Mfg Co Ltd
• Midea Group Co Ltd

Inventors

• Cai Xuegang
• Liu Lei

Classifications

• B01D2321/40

  Automatic control of cleaning processes · CPC title

• B01D2311/04

  Specific process operations in the feed stream; Feed pretreatment · CPC title

• B01D63/065

  on the outer surface thereof · CPC title

• B01D61/18

  Apparatus therefor · CPC title

• B01D61/02

  Reverse osmosis; Hyperfiltration {; Nanofiltration} · CPC title