A personal air conditioning device cools and moistens environmentally hot and dry blower-forced air using water vaporization occurring on external surface of a hollow fiber micro-porous membrane while water or other liquid coolant is taken from a container by means of internal capillaries of hollow
A personal air conditioning device cools and moistens environmentally hot and dry blower-forced air using water vaporization occurring on external surface of a hollow fiber micro-porous membrane while water or other liquid coolant is taken from a container by means of internal capillaries of hollow fiber tubes. The device is able to deliver the pre-cooled air flow over any desired body fragment, particularly under a protective vest.
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1. A wearable personal air conditioning system comprising: a moisture exchange cartridge having a bundle of capillary tubes extending from a first bundle end to a second bundle end, said bundle being arranged to provide interstitial space between and among outside surfaces of the tubes, said capilla
1. A wearable personal air conditioning system comprising: a moisture exchange cartridge having a bundle of capillary tubes extending from a first bundle end to a second bundle end, said bundle being arranged to provide interstitial space between and among outside surfaces of the tubes, said capillary tubes being constructed of a polymer permeable to a liquid coolant, and a cartridge housing accommodating said bundle, said cartridge housing having an inlet for receiving air flow to the interstitial space and an outlet for exhausting the air flow;a sealant closing the interstitial space portion of the first end of the bundle while interiors of the tubes remain open at the first end for receiving a liquid coolant, the tube interiors being closed at the second end;a liquid coolant reservoir operatively connected to the bundle first end for presenting a liquid coolant to the tube interiors at the first end; andan air blower for supplying an air flow to the cartridge housing inlet, whereby relatively dry and warm air flow through the interstitial space can be cooled and moistened by evaporation of a liquid coolant at the outside surfaces of the tubes and exhausted from the cartridge as a relatively cool and moist air flow. 2. The system according to claim 1, further comprising a device enclosure having a shell for removably receiving the cartridge, said shell having an air intake opening for permitting the passage of air flow from the air blower to the cartridge housing inlet and an air outlet opening for permitting the release of air flow from the cartridge housing outlet to outside the device enclosure and a coolant interface opening for permitting coolant access to the tube interiors at the cartridge housing first end. 3. The system according to claim 2, wherein the cartridge housing is closed by a removable cap and the shell air outlet is located on the cap. 4. The system according to claim 2, further comprising a distribution tube connected to the shell air outlet for supplying air flow from the shell air outlet to a selected area on the wearer. 5. The system according to claim 2, wherein the device enclosure further encloses the coolant fluid reservoir. 6. The system according to claim 2, further including a replaceable power supply and wherein the device enclosure further encloses the air blower and the replaceable power supply. 7. The system according to claim 2, further including a replaceable power supply and wherein the device enclosure further encloses the coolant fluid reservoir, the air blower and the replaceable power supply. 8. The system according to claim 7, further comprising a closeable opening for refilling the coolant reservoir, a closeable door for accessing the replaceable power supply and a removable cap for accessing the moisture exchange cartridge wherein the closable opening, the door and the cap are each accessible from a top of the device enclosure. 9. The system according to claim 7, wherein a conduit is provided within the device enclosure for routing air flow from the air blower to the cartridge housing intake, said conduit further providing a reservoir duct for routing airflow from the air blower to the coolant reservoir to pressurize the coolant reservoir. 10. The system according to claim 2, wherein the cartridge housing is cylindrical. 11. The system according to claim 10, wherein the cartridge housing inlet is formed as at least two openings around the periphery of the cartridge housing adjacent the first end of the cartridge housing and the cartridge housing outlet is an opening at a second end of the cartridge housing. 12. The system according to claim 2, wherein the coolant reservoir includes a separate container outside the device enclosure and a tube from the separate container to the device enclosure for supplying liquid coolant from the separate container to the device enclosure. 13. The system according to claim 2, further comprising a liquid coolant transport media contacting said bundle first end for absorbing liquid coolant from the coolant reservoir and presenting the liquid coolant to the bundle first end, whereby liquid coolant can be consistently supplied to the bundle first end even when liquid coolant levels in the coolant reservoir are low or fluctuate with movement. 14. The system according to claim 2, further comprising a garment having a pouch holding the device enclosure. 15. The system according to claim 14, wherein the garment is one of a belted waist pack, a back pack, and a vest. 16. The system according to claim 2, further comprising a vest having a ventilation channel and holes for directing cooled humidified air to a wearer's body and a distribution tube for routing air flow from the device enclosure to ventilation channel. 17. The system according to claim 2, wherein the polymer is permeable to one of water, alcohol, a mixture of water and alcohol and water containing liquids. 18. A moisture exchange cartridge for use in a wearable personal air conditioning system, said cartridge comprising a bundle of capillary tubes extending from a first bundle end to a second bundle end, said bundle being arranged to provide interstitial space between and among outside surfaces of the tubes, said capillary tubes being constructed of a polymer permeable to a liquid coolant, and a cartridge housing accommodating said bundle, said cartridge housing having an inlet for receiving air flow to the interstitial space and an outlet for exhausting the air flow; and a sealant closing the interstitial space portion of the first end of the bundle while interiors of the tubes remain open at the first end for receiving a liquid coolant, the tube interiors being closed at the second end.
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