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A refrigerator with a water treatment system including a head connecting a water supply to a water-using accessory. An end piece is provided for connecting a treatment cartridge to the head. The end piece comprises an inlet fitting having a cam that contacts a follower of a valve located in the head

A refrigerator with a water treatment system including a head connecting a water supply to a water-using accessory. An end piece is provided for connecting a treatment cartridge to the head. The end piece comprises an inlet fitting having a cam that contacts a follower of a valve located in the head to open the valve when the end piece is mounted to the head and connects the treatment cartridge to the water treatment system.

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What is claimed is: 1. A refrigerator comprising: a cabinet comprising at least one compartment having an open face and a door for selectively closing the open face of the compartment; a water-using accessory provided on the cabinet; a head fixed relative to the cabinet and fluidly coupling the wa

What is claimed is: 1. A refrigerator comprising: a cabinet comprising at least one compartment having an open face and a door for selectively closing the open face of the compartment; a water-using accessory provided on the cabinet; a head fixed relative to the cabinet and fluidly coupling the water-using accessory to a water supply; a water-treatment cartridge removably coupled to the head such that when the cartridge is coupled to the head, the cartridge treats the water from the supply for use by the water-using accessory; and a cartridge mounting bracket comprises a casing defining a hollow interior sized to receive the cartridge for removably mounting the cartridge to the casing within the cabinet, with an exterior opening accessible from the exterior of the cabinet and an interior end aligned with the head, the cartridge mounting bracket being located on the cabinet relative to the head such that the mounting of the cartridge to the cartridge mounting bracket by inserting the cartridge into the casing exterior opening effects the coupling of the cartridge to the head without opening the door. 2. A refrigerator comprising: a cabinet defining at least one compartment having an open face and having a door for selectively closing the open face of the compartment; a water-using accessory provided on one of the cabinet and door; a head fixed relative to the cabinet and fluidly coupling the water-using accessory to a water supply; a water-treatment cartridge removably coupled to the head such that when the cartridge is coupled to the head, the cartridge treats the water from the supply for use by the water-using accessory; and a cartridge mounting bracket removably mounting the cartridge within the cabinet and located on the cabinet relative to the head such that the mounting of the cartridge to the cartridge mounting bracket effects the coupling of the cartridge to the head and the cartridge can be mounted to the cartridge mounting bracket; and wherein the cartridge and head are keyed relative to the cartridge mounting bracket to ensure that the cartridge is properly oriented to the cartridge mounting bracket such that the cartridge will fluidly couple with the head when the cartridge is inserted into the cartridge mounting bracket. 3. The refrigerator according to claim 1, and further comprising a latch operable between a latch position, where the cartridge is held in the inserted position, and a release position, where the cartridge can be withdrawn from the casing. 4. The refrigerator according to claim 3, wherein the latch comprises a strike associated with the casing and a catch provided on the cartridge such that the strike holds the catch when the cartridge is in the inserted position to prevent the withdrawal of the cartridge. 5. The refrigerator according to claim 3, wherein the latch comprises a release operable between a locked position, where the latch is placed in the latch position, and an unlocked position, where the latch is placed in the release position. 6. The refrigerator according to claim 5, wherein the release is accessible from the exterior of the cabinet. 7. The refrigerator according to claim 6, wherein the cabinet further comprises a grill having a pass-through opening aligned with the exterior end of the casing to permit the insertion of the cartridge into the casing through the pass-through opening of the grill. 8. The refrigerator according to claim 7, wherein the release is accessible through the pass through opening of the grill. 9. The refrigerator according to claim 8, wherein grill is located at a lower front portion of the cabinet. 10. The refrigerator according to claim 9, and further comprising a handle mounted to the end of the cartridge to assist the user in inserting and withdrawing the cartridge from the casing. 11. The refrigerator according to claim 10, wherein the handle comprises a finger recess accessible from the exterior of the cabinet whereby the user can insert his fingers into the recess to aid in inserting and withdrawing the cartridge from the casing. 12. The refrigerator according to claim 10, and further comprises a removable mount for removably securing the handle to the cartridge. 13. The refrigerator according to claim 12, wherein the removable mount comprises cooperating lugs on the handle and the cartridge, and the lugs collectively forming a bayonet mount for removably securing the handle to the cartridge. 14. The refrigerator according to claim 5, wherein the release is a button moveably coupled to the cartridge such that as the cartridge is inserted into the casing, the button is moved from the locked to the release position to visually indicate that the cartridge is inserted. 15. The refrigerator according to claim 14, wherein the button is biased into the locked position. 16. The refrigerator according to claim 15, wherein the button is uncoupled from the cartridge when the cartridge is fully inserted into the casing resulting in the automatic return of the button to the locked position. 17. The refrigerator according to claim 1, wherein the cartridge and head are keyed relative to the casing to ensure that the cartridge is properly oriented to the casing such that the cartridge will fluidly couple with the head when the cartridge is inserted into the casing. 18. The refrigerator according to claim 17, wherein the head comprises an inlet port for coupling to the water supply and an outlet port coupled to the water-using accessory, and the cartridge comprises inlet and outlet fittings that couple with the inlet and outlet ports, respectively, when the cartridge is in the inserted position to establish water flow from the water supply, through the cartridge, and to the water-using accessory. 19. The refrigerator according to claim 18, wherein the head further comprises a valve for each of the inlet and outlet ports, with each valve having a follower, and each of the inlet and outlet fittings have a cam that contacts the followers to open the valves when the cartridge is in the inserted position. 20. The refrigerator according to claim 19, wherein the head further comprises inlet and outlet passageways fluidly connected to the inlet and outlet ports, with the valves being mounted in the passageways such that the followers extend into the ports. 21. The refrigerator according to claim 20, wherein the passageways are oriented at an angle relative to the ports to reduce the overall length of the head. 22. The refrigerator according to claim 21, wherein the angle is approximately 90 degrees. 23. The refrigerator according to claim 22, wherein the cartridge is elongated and defines a longitudinal axis, with the inlet and outlet fittings and the inlet and outlet ports being oriented generally parallel to the cartridge longitudinal axis. 24. The refrigerator according to claim 18, wherein the head further comprises a bypass valve that fluidly couples the inlet port to the outlet port when the cartridge is not in the inserted position to permit the flow of water from the water supply to the water-using accessory when no cartridge is present. 25. The refrigerator according to claim 1, and further comprising a handle mounted to the end of the cartridge to assist the user in inserting and withdrawing the cartridge from the casing. 26. The refrigerator according to claim 25, wherein the handle comprises a finger recess accessible from the exterior of the cabinet whereby the user can insert his fingers into the recess to aid in inserting and withdrawing the cartridge from the casing. 27. The refrigerator according to claim 26, and further comprises a removable mount for removably securing the handle to the cartridge. 28. The refrigerator according to claim 27, wherein the removable mount comprises cooperating lugs on the handle and the cartridge that form a bayonet mount for removably securing the handle to the cartridge. 29. The refrigerator according to claim 1, wherein the cartridge mounting bracket has an elongated recess in which the cartridge is axially inserted to mount the cartridge to the cartridge mounting bracket. 30. The refrigerator according to claim 29, wherein the head is located at one end of the elongated recess and an inlet opening is formed at an opposing end of the elongated recess, wherein the insertion of the cartridge into the inlet opening mounts the cartridge to the cartridge mounting bracket and fluidly couples the cartridge to the head. 31. The refrigerator according to claim 30, wherein the inlet opening is accessible from the exterior of the cabinet. 32. The refrigerator according to claim 31, wherein the inlet opening is accessible from a side of the cabinet on which the door is provided. 33. The refrigerator according to claim 1, and further comprising a visual indicator indicating when the cartridge is properly mounted to the mounting bracket. 34. The refrigerator according to claim 33, wherein the visual indicator also comprises an audible indicator indicating when the cartridge is properly mounted to the mounting bracket. 35. The refrigerator according to claim 33, wherein the visual indicator comprises a moveable element that operably couples to the cartridge as the cartridge is mounted to the bracket such that the moveably element moves in response to the mounting of the cartridge to the bracket. 36. The refrigerator according to claim 35, wherein the cartridge mounting bracket comprises a casing defining a hollow interior sized to receive the cartridge, with an exterior opening and an interior end aligned with the head, wherein the cartridge is removably mounted to the casing and coupled to the head by inserting the cartridge into the casing exterior opening. 37. The refrigerator according to claim 36, wherein the moveable element comprises a strike that extends into the hollow interior of the casing and the cartridge comprises a catch which catches the strike as the cartridge is inserted into the hollow interior of the casing to couple the movement of the moveable element to the cartridge. 38. The refrigerator according to claim 37, and further comprising a release for uncoupling the moveable element from the cartridge when the cartridge is properly inserted within the casing. 39. The refrigerator according to claim 38, wherein the moveable element is moveable between a normal position and a withdrawn position corresponding to the cartridge being properly inserted. 40. The refrigerator according to claim 39, wherein the release is automatically actuated upon the proper insertion of the cartridge resulting in the moveable element being automatically biased to the normal position upon the proper insertion of the cartridge. 41. A refrigerator comprising: a water-using accessory; and a water-treatment system fluidly coupling a water supply to the water-using accessory for supplying treated water to the water-using accessory, and comprising: a head assembly comprising at least one valve controlling the flow of water from the water supply through the head assembly; and an end piece of a treatment cartridge fluidly connecting the treatment cartridge to the head assembly by actuating the at least one valve, the end piece comprising: an end piece wall; an inlet fitting and an outlet fitting, with at least one of the inlet fitting and outlet fitting having a cam surface; wherein said inlet fitting and said outlet fitting extend discretely from said end piece wall, and wherein at least a portion of said cam surface is vectored from a longitudinal axis of the treatment cartridge for actuating the at least one valve when the treatment cartridge is connected to the head assembly. 42. The refrigerator of claim 41, wherein at least a portion of said cam surface is vectored between about 1 degree and about 90 degrees from said longitudinal axis. 43. The refrigerator of claim 41, wherein at least a portion of said cam surface is angled between about 1 degree and about 90 degrees from said longitudinal axis. 44. The refrigerator of claim 41, wherein said cam surface comprises an essentially straight surface. 45. The refrigerator of claim 41, wherein said cam surface comprises an essentially curved surface. 46. The refrigerator of claim 41, wherein said cam surface comprises a first essentially straight surface and a second essentially straight surface, each said surface being vectored from said longitudinal axis. 47. The refrigerator of claim 46, wherein said first essentially straight surface is vectored between about 1 degree and about 45 degrees from said longitudinal axis and said second essentially straight surface is vectored between about 45 degrees and 90 degrees from said longitudinal axis. 48. The refrigerator of claim 41, wherein said cam surface comprises an essentially curved surface and an essentially straight surface, each said surface being vectored from said longitudinal axis. 49. The refrigerator of claim 48, wherein said essentially straight surface is vectored between about 5 degrees and 90 degrees from said longitudinal axis. 50. The refrigerator of claim 48, wherein at least one of said first essentially straight surface and said second essentially straight surface are angled in relation to said longitudinal axis. 51. The refrigerator of claim 48, wherein said essentially straight surface is angled in relation to said longitudinal axis. 52. The refrigerator of claim 41, wherein said cam surface is distal from a sealing surface. 53. The refrigerator of claim 41, wherein said both the inlet and outlet fittings have a cam surface, the inlet fitting has an inlet fitting longitudinal axis, and the outlet fitting has an outlet fitting longitudinal axis,. 54. The refrigerator of claim 53, the end piece further comprising a protrusion having a protrusion longitudinal axis, said protrusion extending from said end piece wall. 55. The refrigerator of claim 54, wherein said protrusion is positioned between said inlet and said outlet fittings. 56. The refrigerator of claim 55, wherein the distance from said inlet fitting longitudinal axis to said outlet fitting longitudinal axis is less than the distance from said inlet fitting longitudinal axis to said protrusion longitudinal axis, and wherein the distance from said inlet fitting to said protrusion longitudinal axis is less than the distance from said outlet fitting longitudinal axis to said protrusion longitudinal axis. 57. The refrigerator of claim 56, wherein the distance from said inlet fitting longitudinal axis to said outlet fitting longitudinal axis is about 0.8 cm, and wherein the distance from said inlet fitting to said protrusion longitudinal axis is about 1.1 cm, and wherein the distance from said outlet fitting longitudinal axis to said protrusion longitudinal axis is about 1.9 cm. 58. The refrigerator of claim 57, wherein the most distal portion of said protrusion is closer to said end piece wall than the most distal portions of said inlet and said outlet fittings. 59. The refrigerator of claim 41, wherein said cam surface is positioned on a wall extending from the base of a channel of said inlet fitting. 60. The refrigerator of claim 41, and further comprising a cartridge housing having a first end, a closed second end, and a longitudinal axis extending therebetween, wherein said end piece wall is connected to said first end of said cartridge housing. 61. The refrigerator of claim 60, wherein said cartridge housing comprises a treatment material in fluid communication with said inlet and said outlet fittings. 62. The refrigerator of claim 41, wherein the head assembly comprises an inlet receiving port and out outlet receiving port, wherein the inlet receiving port is sized to receive the inlet fitting and the outlet receiving port is sized to receive the outlet fitting to fluidly couple the head and the end piece. 63. The refrigerator of claim 62, wherein the head assembly further comprises a valve having a follower located in the inlet receiving port and the inlet fitting has an inlet fitting longitudinal axis and a cam surface, such that when the inlet fitting is received within the inlet receiving port, the cam surface contacts the follower to open the valve. 64. The refrigerator of claim 62, wherein said outlet valve is actuated by pressure. 65. The refrigerator of claim 63, wherein the head assembly further comprises a second valve having a follower located in the outlet receiving port and the outlet fitting has an outlet fitting longitudinal axis and a cam surface, such that when the outlet fitting is received within the outlet receiving port, the cam surface of the outlet fitting contacts the follower of the second valve to open the second valve. 66. The refrigerator of claim 63, wherein the head assembly further comprises a bypass valve fluidly connecting the inlet receiving port and the outlet receiving port when the end piece is not mounted to the head assembly. 67. The refrigerator of claim 66, wherein said end piece further comprises a protrusion for actuating the bypass valve, and the head assembly further comprises a bypass passageway housing which contains the bypass valve, wherein the bypass passageway housing is so arranged to receive said protrusion and the bypass valve is actuated by said protrusion. 68. The refrigerator of claim 63, wherein the head further comprises an inlet port fluidly coupling the water supply to the inlet receiving port, and an outlet port fluidly coupling the water-using accessory to the outlet receiving port, wherein the valve is located in the inlet port such that a portion of the follower extends into the inlet receiving port. 69. The refrigerator of claim 68, wherein the inlet port is oriented at an angle relative to the inlet receiving port to reduce the overall length of the head assembly. 70. The refrigerator of claim 69, wherein the angle is approximately 90 degrees. 71. A refrigerator comprising: a cabinet comprising at least one compartment having an open face and a door for selectively closing the open face of the compartment; a water-using accessory provided on the cabinet; a head fixed relative to the cabinet and fluidly coupling the water-using accessory to a water supply; a water-treatment cartridge removably coupled to the head such that when the cartridge is coupled to the head, the cartridge treats the water from the supply for use by the water-using accessory; and a cartridge mounting bracket defining a hollow interior sized to receive the cartridge and aligned with the head, the hollow interior opening onto the exterior of the cabinet such that the hollow interior is accessible from the exterior of the cabinet; wherein the cartridge can be inserted into the exterior opening to effect the coupling of the cartridge to the head without opening the door. 72. The refrigerator according to claim 71, and further comprising a latch operable between a latch position, where the cartridge is held in the inserted position, and a release position, where the cartridge can be withdrawn from the cartridge mounting bracket. 73. The refrigerator according to claim 72, wherein the latch comprises a strike associated with the cartridge mounting bracket and a catch provided on the cartridge such that the strike holds the catch when the cartridge is in the inserted position to prevent the withdrawal of the cartridge. 74. The refrigerator according to claim 72, wherein the latch comprises a release operable between a locked position, where the latch is placed in the latch position, and an unlocked position, where the latch is placed in the release position. 75. The refrigerator according to claim 74, wherein the release is accessible from the exterior of the cabinet. 76. The refrigerator according to claim 71, and further comprising a grill associated with the cabinet having a pass-through opening aligned with the hollow interior of the cartridge mounting bracket to permit the insertion of the cartridge into the cartridge mounting bracket through the pass-through opening of the grill, wherein the cartridge is removably mounted to the cartridge mounting bracket and coupled to the head by inserting the cartridge through the grill into the cartridge mounting bracket exterior opening to place the cartridge into an inserted position. 77. The refrigerator according to claim 76, wherein grill is located at a lower front portion of the cabinet. 78. The refrigerator according to claim 77, and further comprising a handle mounted to the end of the cartridge to assist the user in inserting and withdrawing the cartridge from the cartridge mounting bracket. 79. The refrigerator according to claim 78, wherein the handle comprises a finger recess accessible from the exterior of the cabinet whereby the user's fingers can be inserted into the recess to aid in inserting and withdrawing the cartridge from the cartridge mounting bracket. 80. The refrigerator according to claim 78, and further comprises a removable mount for removably securing the handle to the cartridge. 81. The refrigerator according to claim 80, wherein the removable mount comprises cooperating lugs on the handle and the cartridge, and the lugs collectively forming a bayonet mount for removably securing the handle to the cartridge. 82. The refrigerator according to claim 2, wherein the head comprises an inlet port for coupling to the water supply and an outlet port coupled to the water-using accessory, and the cartridge comprises inlet and outlet fittings that couple with the inlet and outlet ports, respectively, when the cartridge is in the inserted position to establish water flow from the water supply, through the cartridge, and to the water-using accessory. 83. The refrigerator according to claim 82, wherein the head further comprises a valve for each of the inlet and outlet ports, with each valve having a follower, and each of the inlet and outlet fittings have a cam that contacts the followers to open the valves when the cartridge is in the inserted position. 84. The refrigerator according to claim 83, wherein the head further comprises inlet and outlet passageways fluidly connected to the inlet and outlet ports, with the valves being mounted in the passageways such that the followers extend into the ports. 85. The refrigerator according to claim 84, wherein the passageways are oriented at an angle relative to the ports to reduce the overall length of the head. 86. The refrigerator according to claim 85, wherein the angle is approximately 90 degrees. 87. The refrigerator according to claim 86, wherein the cartridge is elongated and defines a longitudinal axis, with the inlet and outlet fittings and the inlet and outlet ports being oriented generally parallel to the cartridge longitudinal axis.