Replaceable integrated water filtration and sterilization cartridge and assembly therefor

• US 5,573,666 A
• Filed: 03/15/1995
• Issued: 11/12/1996
• Est. Priority Date: 09/23/1994
• Status: Expired due to Term

• Current Assignee: Access Business Group International LLC (Alticor Incorporated)
• Original Assignee: Amon Korin
• Inventors: Korin, Amon
• Primary Examiner(s): McCarthy, Neil
• Application Number:
  US08/406,338
• Time in Patent Office: 608 Days
• Field of Search: 210/232, 210/435, 210/443, 210/446, 210/451, 250/432 R, 250/436, 422/24, 422/186.3
• US Class Current: 210/232
• CPC Class Codes: C02F 1/003 using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices C02F9/20 takes precedence
• CPC Class Codes: C02F 1/325 Irradiation devices or lamp constructions
• CPC Class Codes: C02F 2201/3223 Single elongated lamp located on the central axis of a turbular reactor

Abstract

A filtration/sterilization assembly which comprises: a filtration housing comprising a base unit and an outer housing, the base unit comprises a permeate channel, a port for removing permeate from the permeate channel, a feed channel disposed about the permeate channel, and a port for feeding a feed stream into the feed channel; and an integrated filtration and sterilization cartridge replaceably disposed within the filtration housing; wherein the outer housing is disposed about the cartridge so as to form a feed chamber between the inner surface of the outer housing and the outer surface of the filtration member and wherein the feed chamber is in contact with the feed channel of the base unit, and wherein permeate from the cartridge is passed through to the permeate channel for discharging from the assembly.

Claims

1. An integrated filtration and sterilization cartridge which comprises:

a first end plate;

an ultraviolet lamp affixed to said first end plate; and

a filtration member being affixed to said first end plate and disposed about said ultraviolet lamp such that a permeate chamber is formed between said ultraviolet lamp and the inner surface of said filtration member, wherein said first end plate, said first filtration member and said ultraviolet lamp form an integrated unit that is removable and replaceable as a single cartridge.

2. The integrated cartridge according to claim 1 wherein said first end plate further comprises at least one permeate through-hole disposed therein and in contact with said permeate chamber.

3. The integrated cartridge according to claim 1 further comprising a counter current sleeve disposed between said ultraviolet lamp and the inner surface of said filtration member.

4. The integrated cartridge according to claim 3 wherein said counter current sleeve is comprises a permeable layer and an impermeable layer, said permeable layer being disposed between said impermeable layer and said inner surface of said filtration member.

5. The integrated cartridge according to claim 4 wherein said counter current sleeve is in contact with said inner surface of said filtration member.

6. The integrated cartridge according to claim 3 wherein said first end plate further comprises at least one permeate through-hole disposed between said ultraviolet lamp and said inner surface of said filtration member and in contact with said permeate chamber.

7. The integrated cartridge according to claim 1 wherein said first end plate comprises a first end portion which is affixed about said filtration member and a lamp conduit which is substantially perpendicularly and centrally disposed with respect to said first end portion such that said ultraviolet lamp may pass through said lamp conduit.

8. The integrated cartridge according to claim 7 wherein said ultraviolet lamp is sealing disposed within said lamp conduit such that a permeate conduit is formed between an inner surface of said lamp conduit and an outer surface of said ultraviolet lamp, and wherein said permeate conduit is in fluid communication with said permeate chamber and a permeate port disposed within said lamp conduit.

9. The integrated cartridge according to claim 8 wherein ultraviolet lamp is sealing disposed within said lamp conduit by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

10. The integrated cartridge according to claim 1 wherein said first end plate comprises a first end portion which is affixed about said filtration member and a lamp conduit which is substantially perpendicularly and centrally disposed with respect to said first end portion such that lamp conduit is sealing disposed about an inner surface of a lamp tube which is disposed about said ultraviolet lamp.

11. The integrated cartridge according to claim 10 wherein said lamp conduit is sealing disposed about said inner surface of said ultraviolet lamp by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

12. The integrated cartridge according to claim 1 wherein said filtration member is affixed to said first end plate by at least one method selected from the group consisting of:

an adhesive material, glue, hot melt, thermosetic material or in-situ formation.

13. The integrated cartridge according to claim 1 wherein said ultraviolet lamp is disposed within a lamp tube.

14. The integrated cartridge according to claim 13 wherein said lamp tube is formed of one material selected from the group consisting of:

quartz, hard glass, soft glass, and transparent or translucent ultraviolet resistant plastic.

15. The integrated cartridge according to claim 1 wherein said filter member is formed from at least one material selected from the group consisting of:

activated carbon, adsorption resins, ion exchange resins, zeolite, reduction catalysts, paper, polymers, clay, ceramics, metals, nylon, wood pulp, cellulose, cotton, and fibers.

16. The integrated cartridge according to claim 1 wherein said filter member is in the form of one of the following:

string wound filter, fiber composite molded filter, pleated filter, hollow fiber membrane, spiral wound membrane, and plate and frame membrane.

17. A filtration/sterilization assembly which comprises:

a filtration housing comprising a base unit and an outer housing, said base unit comprises a permeate channel, a means for removing permeate from said permeate channel, a feed channel disposed about said permeate channel, and a means for feeding a feed stream into said feed channel; and

an integrated filtration and sterilization cartridge which comprises;

a first end plate;

an ultraviolet lamp affixed to said first end plate; and

a filtration member being affixed to said first end plate and disposed about said ultraviolet lamp such that a permeate chamber is formed between said ultraviolet lamp and the inner surface of said filtration member, wherein said first end plate, said filtration member and said ultraviolet lamp form an integrated unit that is removable and replaceable as a single cartridge, and wherein said first end plate comprises a means for allowing permeate from said permeate chamber to pass through to said permeate channel;

said outer housing is disposed about said integrated filtration and sterilization cartridge so as to form a feed chamber between the inner surface of said outer housing and the outer surface of said filtration member and wherein said feed chamber is in contact with said feed channel of said base unit.

18. The assembly according to claim 17 wherein said base unit further comprises a means for dispensing said permeate, said dispensing means being connected to said means for removing permeate from said permeate channel.

19. The assembly according to claim 17 wherein said base unit further comprises a means for supplying power to said ultraviolet lamp.

20. The assembly according to claim 17 wherein said integrated filtration and sterilization cartridge further comprises a counter current sleeve disposed between said ultraviolet lamp and the inner surface of said filtration member.

21. The assembly according to claim 20 wherein said counter current sleeve is comprises a permeable layer and an impermeable layer, said permeable layer being disposed between said impermeable layer and said inner surface of said filtration member.

22. The assembly according to claim 21 wherein said counter current sleeve is in contact with said inner surface of said filtration member.

23. The assembly according to claim 20 wherein said first end plate further comprises at least one a means for allowing permeate from said permeate chamber to pass through to said permeate channel, said means for allowing permeate from said permeate chamber to pass through to said permeate channel is a permeate through-hole disposed between said ultraviolet lamp and said inner surface of said filtration member and in contact with both said permeate chamber and said permeate channel.

24. The assembly according to claim 17 wherein said first end plate comprises a first end portion which is affixed about said filtration member and a lamp conduit which is substantially perpendicularly and centrally disposed with respect to said first end portion such that said ultraviolet lamp may pass through said lamp conduit.

25. The assembly according to claim 24 wherein said ultraviolet lamp is sealing disposed within said lamp conduit such that said means for allowing permeate from said permeate chamber to pass through to said permeate channel is a permeate conduit which is formed between an inner surface of said lamp conduit and an outer surface of said ultraviolet lamp, and wherein said permeate conduit is in fluid communication with said permeate chamber and a permeate port disposed within said lamp conduit such that said permeate conduit is in fluid communication with said permeate channel.

26. The assembly according to claim 25 wherein ultraviolet lamp is sealing disposed within said lamp conduit by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

27. The assembly according to claim 17 wherein said first end plate comprises a first end portion which is affixed about said filtration member and a lamp conduit which is substantially perpendicularly and centrally disposed with respect to said first end portion such that said lamp conduit is sealing disposed about an inner surface of a lamp tube which is disposed about said ultraviolet lamp.

28. The assembly according to claim 27 wherein said lamp conduit is sealing disposed about said inner surface of said lamp tube by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

29. The assembly according to claim 17 wherein said filtration member is affixed to said first end plate by at least one method selected from the group consisting of:

an adhesive material, glue, hot melt, thermosetic material or in-situ formation.

30. The assembly according to claim 17 wherein said ultraviolet lamp is disposed within a lamp tube.

31. The assembly according to claim 30 wherein said lamp tube is formed of one material selected from the group consisting of:

quartz, hard glass, soft glass, and transparent or translucent ultraviolet resistant plastic.

32. The assembly according to claim 17 wherein said filter member is formed from at least one material selected from the group consisting of:

activated carbon, adsorption resins, ion exchange resins, zeolite, reduction catalysts, paper, polymers, clay, ceramics, metals, nylon, wood pulp, cellulose, cotton, and fibers.

33. The assembly according to claim 17 wherein said filter member is in the form of one of the following:

string wound filter, fiber composite molded filter, pleated filter, hollow fiber membrane, spiral wound membrane, and plate and frame membrane.

34. The assembly according to claim 17 wherein said permeate channel is formed between the outer surface of said first end plate and the adjacent surface of said base unit.

35. The assembly according to claim 25 wherein said permeate channel is molded into said base unit.

36. The assembly according to claim 17 wherein said feed channel is formed between the outer surface of said first end plate and the adjacent surface of said base unit.

37. The assembly according to claim 25 wherein said feed channel is molded into said base unit.

44. The assembly according to claim 37 wherein said first end plate is sealing disposed about said ultraviolet lamp by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

45. The assembly according to claim 37 wherein said first end plate is affixed about said filtration member and is sealing disposed about an inner surface of a lamp tube which is disposed about said ultraviolet lamp.

46. The assembly according to claim 45 wherein said first end plate is sealing disposed about said inner surface of said lamp tube by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

47. The assembly according to claim 37 wherein said filtration member is affixed to said first and second end plates by at least one method selected from the group consisting of:

an adhesive material, glue, hot melt, thermosetic material or in-situ formation.

48. The assembly according to claim 37 wherein said ultraviolet lamp is disposed within a lamp tube.

49. The assembly according to claim 48 wherein said lamp tube is formed of one material selected from the group consisting of:

quartz, hard glass, soft glass, and transparent or translucent ultraviolet resistant plastic.

50. The assembly according to claim 37 wherein said filter member is formed from at least one material selected from the group consisting of:

activated carbon, adsorption resins, ion exchange resins, zeolite, reduction catalysts, paper, polymers, clay, ceramics, metals, nylon, wood pulp, cellulose, cotton, and fibers.

51. The assembly according to claim 37 wherein said filter member is in the form of one of the following:

string wound filter, fiber composite molded filter, pleated filter, hollow fiber membrane, spiral wound membrane, and plate and frame membrane.

52. The assembly according to claim 37 wherein said feed channel is formed between the outer surface of said first end plate and the adjacent surface of said base unit.

53. The assembly according to claim 37 wherein said first end plate is sealing disposed against said base unit and said second end plate is sealing disposed against said outer housing by means of at least one means selected from the group consisting of:

an elastomeric gasket, a knife over gasket, compression o-ring, gland o-ring, grommet, chemical adhesive, hot melt, in-situ formation, insert molding, welding, chemical bonding, and compression fitting.

54. The assembly according to claim 17 wherein said first end plate is sealing disposed against said base unit and said second end plate is sealing disposed against said outer housing by means of at least one means selected from the group consisting of:

an elastomeric gasket, a knife over gasket, compression o-ring, gland o-ring, grommet, chemical adhesive, hot melt, in-situ formation, insert molding, welding, chemical bonding, and compression fitting.

38. A filtration/sterilization assembly which comprises:

a filtration housing comprising a base unit and an outer housing, said outer housing comprises a permeate port, and said base unit comprises a feed channel and a means for feeding a feed stream into said feed channel; and

an integrated filtration and sterilization cartridge which comprises;

a first end plate and a second end plate;

an ultraviolet lamp affixed to said first end plate; and

a filtration member disposed between said first and second end plates, said filtration member being affixed to both said first and second end plates and disposed about said ultraviolet lamp such that a permeate chamber is formed between said ultraviolet lamp and the inner surface of said filtration member, wherein said first end plate, said second end plate, said filtration member and said ultraviolet lamp form an integrated unit that is removable and replaceable as a single cartridge, and wherein said second end plate comprises a means for allowing permeate from said permeate chamber to pass through to said permeate port;

said outer housing is disposed about said integrated filtration and sterilization cartridge so as to form a feed chamber between the inner surface of said outer housing and the outer surface of said filtration member and wherein said feed chamber is in contact with said feed channel of said base unit.

39. The assembly according to claim 38 wherein said outer housing further comprises a means for dispensing said permeate, said dispensing means being connected to said permeate port.

40. The assembly according to claim 39 wherein said base unit further comprises a means for supplying power to said ultraviolet lamp.

41. The assembly according to claim 38 wherein said integrated filtration and sterilization cartridge further comprises a counter current sleeve disposed between said ultraviolet lamp and the inner surface of said filtration member.

42. The assembly according to claim 41 wherein said counter current sleeve is comprises a permeable layer and an impermeable layer, said permeable layer being disposed between said impermeable layer and said inner surface of said filtration member.

43. The assembly according to claim 42 wherein said counter current sleeve is in contact with said inner surface of said filtration member.

55. An in-line filtration/sterilization assembly which is capable of being replaceably mounted directly within a feed stream, said assembly comprises:

a filtration housing comprising a base unit and an outer housing, said base unit comprises a means for removing permeate from said assembly, and said outer housing comprises a means for feeding said feed stream into said assembly; and

an integrated filtration and sterilization cartridge which comprises;

a first end plate;

an ultraviolet lamp affixed to said first end plate; and

a filtration member being affixed to said first end plate and disposed about said ultraviolet lamp such that a permeate chamber is formed between said ultraviolet lamp and the inner surface of said filtration member, wherein said first end plate, said filtration member and said ultraviolet lamp form integrated unit that is removable and replaceable as a single cartridge;

said outer housing is disposed about said integrated filtration and sterilization cartridge so as to form a feed chamber between the inner surface of said outer housing and the outer surface of said filtration member and wherein said feed chamber is in contact with said means for feeding said feed stream into said assembly, and wherein said base unit is disposed at the opposite end of said cartridge as said outer housing so as to form a permeate compartment between the inner surface of said base unit and the outer surface of said first end plate, and wherein said permeate compartment is in contact with said means for removing permeate from said assembly and said first end plate comprises at least one permeate through-hole disposed therein and in contact with both said permeate chamber and said permeate compartment.

56. The assembly according to claim 55 wherein said base unit further comprises a means for supplying power to said ultraviolet lamp.

57. The assembly according to claim 55 wherein said integrated filtration and sterilization cartridge further comprises a counter current sleeve disposed between said ultraviolet lamp and the inner surface of said filtration member.

58. The assembly according to claim 57 wherein said counter current sleeve is comprises a permeable layer and an impermeable layer, said permeable layer being disposed between said impermeable layer and said inner surface of said filtration member.

59. The assembly according to claim 58 wherein said counter current sleeve is in contact with said inner surface of said filtration member.

60. The assembly according to claim 55 wherein said first end plate is sealing disposed about said ultraviolet lamp by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

61. The assembly according to claim 55 wherein said first end plate is affixed about said filtration member and is sealing disposed about an inner surface of a lamp tube which is disposed about said ultraviolet lamp.

62. The assembly according to claim 61 wherein said first end plate is sealing disposed about said inner surface of said lamp tube by at least one sealing means selected from the group consisting of:

an elastomeric seal, a packing material, a mechanical seal, a compression fitting, a chemical adhesive material, potting, hot melt and thermosetic material.

63. The assembly according to claim 55 wherein said filtration member is affixed to said first end plate by at least one method selected from the group consisting of:

an adhesive material, glue, hot melt, thermosetic material or in-situ formation.

64. The assembly according to claim 55 wherein said ultraviolet lamp is disposed within a lamp tube.

65. The assembly according to claim 64 wherein said lamp tube is formed of one material selected from the group consisting of:

quartz, hard glass, soft glass, and transparent or translucent ultraviolet resistant plastic.

66. The assembly according to claim 55 wherein said filter member is formed from at least one material selected from the group consisting of:

activated carbon, adsorption resins, ion exchange resins, zeolite, reduction catalysts, paper, polymers, clay, ceramics, metals, nylon, wood pulp, cellulose, cotton, and fibers.

67. The assembly according to claim 55 wherein said filter member is in the form of one of the following:

string wound filter, fiber composite molded filter, pleated filter, hollow fiber membrane, spiral wound membrane, and plate and frame membrane.