Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1991-08-16
1992-04-21
Hart, Charles
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
55 20, 55 21, 55 23, 55 80, 55 97, 55213, 55215, 55217, 55269, 55279, 55472, 62 93, 62272, 210128, 210251, 210806, C02F 100, B01D 500, F25D 1706
Patent
active
051065126
ABSTRACT:
A water generating device for obtaining potable water from ambient air inside or outside a structure or dwelling, having ducts for bringing this supply of ambient air to the device and for releasing the air back outside the device after it has been processed. There is an air filter for filtering the air prior to processing of the air. The air filter includes a one-time sensing element which renders it unusable when removed from the generator. A condenser is provided for extracting water vapor in the air brought thereto by the ducts. Within the ducts there is a fan or blower to move air from outside the device through the condenser and for returning the air back outside the device after it has traversed the condenser. Between the condenser and the collection point, there is an immediate temporary holding reservoir, or plumbing to this reservoir, which contains an ultraviolet light to kill existing microorganisms, as well as a pump to transport the water through a subsequent water filter, a second exposure to ultraviolet light, and into the ultimate internal or external water storage unit. The water filter also includes a one-time sensing element which renders it unusable when removed. An internal container is positioned to receive and collect the water after it leaves the second exposure to ultraviolet light, and there is a water sensor below the top of the internal container for shutting down the device when the container is full of water. Prior to this internal container, which is removable and may be reusable, is a valve for diverting this water instead to external water storage units. A switch is provided for automatically deactivating the device until the nonreusable air filter element is replaced after a predetermined pressure drop in the air after the air filter compared to that of the air before the air filter. A timer is provided for deactivating the device until a nonreusable water filter element is replaced after a predetermined number of hours of operation. A sensor is provided for deactivating the device when the UV light(s) fail to operate. A thermostat and humidistat are settable in conjunction with each other by a user to minimize energy consumption and maximize water yield. There is also a manual override switch to these conditional settings. First, second, and third indicators provide a signal when the air filter element, the water filter element, and the UV light element(s) are in need of being replaced. A fourth indicator provides a signal when the internal water container is full.
REFERENCES:
patent: 4146372 (1979-03-01), Groth et al.
patent: 4252003 (1981-02-01), Eckard et al.
patent: 4319461 (1982-03-01), Shaw
patent: 4351651 (1982-09-01), Courveya
patent: 4505128 (1985-03-01), Miller
patent: 4735054 (1988-04-01), Beckey
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