AIRCRAFT POTABLE WATER SYSTEM

• US 20110297609A1
• Filed: 02/22/2011
• Published: 12/08/2011
• Est. Priority Date: 06/04/2010
• Status: Active Grant

• Current Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Goodrich Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Hu, Jin
• Granted Patent: US 8,678,201 B2
• Time in Patent Office: Days
• US Class Current: 210/259
• CPC Class Codes: B01D 2201/088 Arrangements for killing microorganisms
• CPC Class Codes: B01D 2239/025 comprising nanofibres apparatus incorporating such gas filtering material see B01D46/546
• CPC Class Codes: B01D 2239/0442 Antimicrobial, antibacterial, antifungal additives apparatus incorporating such gas filtering material B01D46/0028
• CPC Class Codes: B01D 2239/0631 Electro-spun
• CPC Class Codes: B01D 2325/48 Antimicrobial properties
• CPC Class Codes: B01D 39/2017 the material being filamentary or fibrous
• CPC Class Codes: B01D 39/2041 the material being filamentary or fibrous
• CPC Class Codes: B01D 69/02 characterised by their properties
• CPC Class Codes: B01D 69/12 Composite membranes; Ultra-thin membranes
• CPC Class Codes: B01D 69/1218 Layers having the same chemical composition, but different properties, e.g. pore size, molecular weight or porosity
• CPC Class Codes: B01D 69/147 containing embedded adsorbents
• CPC Class Codes: B01D 69/148 Organic/inorganic mixed matrix membranes
• CPC Class Codes: B01J 20/10 comprising silica or silicate
• CPC Class Codes: B01J 20/28038 Membranes or mats made from fibers or filaments
• CPC Class Codes: B01J 20/2804 Sheets with a specific shape, e.g. corrugated, folded, pleated, helical
• CPC Class Codes: B01J 2220/62 In a cartridge
• CPC Class Codes: C02F 1/001 Processes for the treatment of water whereby the filtration technique is of importance C02F1/44 takes precedence; construction of filters in general B01D24/00 - B01D41/00
• CPC Class Codes: C02F 1/283 using coal, charred products, or inorganic mixtures containing them
• CPC Class Codes: C02F 1/44 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 Class Codes: C02F 1/50 by addition or application of a germicide or by oligodynamic treatment C02F1/4606, C02F1/467, C02F1/76 take precedence
• CPC Class Codes: C02F 1/505 : by oligodynamic treatment
• CPC Class Codes: C02F 2201/001 : Build in apparatus for autonomous on board water supply and wastewater treatment (e.g. for aircrafts, cruiseships, oil drilling platforms, railway trains, space stations)
• CPC Class Codes: C02F 2201/006 : Cartridges
• CPC Class Codes: C02F 2301/026 : Spiral, helicoidal, radial
• CPC Class Codes: C02F 2303/04 : Disinfection
• CPC Class Codes: C02F 2305/08 : Nanoparticles or nanotubes
• CPC Class Codes: C02F 2307/10 : as part of a potable water dispenser, e.g. for use in homes or offices
• CPC Class Codes: Y10T 29/4973 : Replacing of defective part

Abstract

A potable water system (10) comprises a supply line (18) and a water-purification device (20) incorporated thereinto. The water-purification device (20) comprises a microorganism filter (40) having a housing (42) and replaceable cartridge (42). The cartridge'"'"'s filter media (50) includes a microorganism-capturing membrane (e.g., comprising an electropositive material) and a microorganism-killing membrane (e.g., comprising a biocidal material).

Claims

1. Filter media comprising a microorganism-killing membrane that kills microorganisms and a microorganism-capturing membrane that captures microorganisms.

2. Filter media as set forth in claim 1, wherein the microorganism-killing membrane is adhered to the microorganism-capturing membrane.

3. Filter media as set forth in claim 2, wherein the microorganism-killing membrane is adhered to an inlet side of the microorganism-capturing membrane.

4. Filter media as set forth in claim 1, wherein the microorganism-killing membrane comprises a biocidal material and wherein the microorganism-capturing membrane comprises an electropositive material.

5. Filter media as set forth in claim 1, wherein the POA of the microorganism-killing membrane is at least twice as great as the POA of the microorganism-capturing membrane.

6. Filter media as set forth in claim 1, wherein the POA of the microorganism-killing membrane is at least four times as great as the POA of the microorganism-capturing membrane.

7. Filter media as set forth in claim 1, wherein the microorganism-capturing membrane comprises microglass fiber on which nano aluminia is coated or deposited.

8. Filter media as set forth in claim 1, wherein the microorganism-killing membrane comprises an antibacterial fabric and contains biocidal nanosilver.

9. Filter media as set forth in claim 8, wherein the microorganism-capturing membrane comprises microglass fiber on which nano aluminia is coated or deposited.

10. Filter media as set forth in claim 1, wherein the microorganism-killing membrane comprises an electro-spinning polymer nanofiber mat containing biocidal nano-silver.

11. Filter media as set forth in claim 10, wherein nano-silver particles are embedded within the mat'"'"'s nanofibers or wherein fuzzy nanosilver is coated on the mat'"'"'s nanofibers.

12. Filter media as set forth in claim 10, wherein the microorganism-capturing membrane comprises microglass fiber on which nano aluminia is coated or deposited.

13. Filter media as set forth in claim 1, any of the preceding A claims, wherein the microorganism-killing membrane comprises an electro-spun polymer nanofiber mat containing organic biocides.

14. Filter media as set forth in claim 13, wherein the microorganism-capturing membrane comprises microglass fiber on which nano aluminia is coated or deposited.

15. Filter media as set forth in claim 1, wherein the microorganism-killing membrane is adhered to an inlet side of the microorganism-capturing membrane,

wherein the microorganism-killing membrane comprises a biocidal material and wherein the microorganism-capturing membrane comprises an electropositive material, and

wherein the POA of the microorganism-killing membrane is at least twice as great as the POA of the microorganism-capturing membrane.

16. A filter cartridge comprising the filter media set forth in claim 1, wherein water passes through the filter media as it flows from an inlet side to an outlet side.

17. A microorganism filter comprising a housing and a filter cartridge as set forth in claim 16 mounted within the housing.

18. A method of up keeping the microorganism filter set forth in claim 17, said method comprising the step of periodically replacing the filter cartridge.

19. A water-purification device comprising the microorganism filter set forth in claim 17, and a separate particle filter situated upstream of the microorganism filter.

20. A potable water system comprising a supply line and the water-purification device set forth in claim 19 installed in this supply line.