# US 2014/0197084 A1 · Seawater desalination unit > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197084 A1 - Document ID: US20140197084A1 - Status: Published application - Kind: A1 - Application number: 13/860,637 - Filed: 2013-04-11 - Published: 2014-07-17 - Earliest claimed: 2013-01-11 - Assignees: Industrial Technology Research Institute - Applicants: Industrial Technology Research Institute - Inventors: YUNG-JEN CHENG; HUNG-CHENG YEN - Web page: https://patentgrep.com/patent/US20140197084A1 ## CPC - C02F 1/002: {using small portable filters for producing potable water, e.g. personal travel or emergency equipment, survival kits, combat gear (C02F1/003 takes precedence)} - B01D 61/08: Apparatus therefor - B01D 35/26: Filters with built-in pumps {filters provided with a pump mounted in or on the casing (aquarium pumps or filters A01K63/04)} - B01D 35/30: Filter housing constructions - B01D 61/10: Accessories; Auxiliary operations - B01D 2313/205: characterised by the shape - B01D 2313/2061: Organic, e.g. polymeric material - B01D 2313/208: Resilient or flexible housing walls, e.g. bags or foils - B01D 2313/243: Pumps - C02F 1/283: {using coal, charred products, or inorganic mixtures containing them} - C02F 1/42: by ion-exchange (ion-exchange in general B01J) - C02F 1/441: {by reverse osmosis} - C02F 2001/427: {using mixed beds} - C02F 2103/08: Seawater, e.g. for desalination - Y02A 20/131: Reverse-osmosis - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract A seawater desalination unit is disclosed, which comprises: a frame, an exit filtration part, and a water drawing part. The frame is configured with a reservoir, a water intake pipe and a water discharge pipe in a manner that the water intake pipe is connected to the reservoir respectively via one end thereof, while allowing a first check valve to be disposed at a position between the reservoir and the water intake pipe, and the water discharge pipe is connected to the second filtration part and the reservoir respectively via two opposite ends thereof, while allowing a second check valve to be disposed at a position between the high-pressure reservoir and the water discharge pipe. Moreover, the water drawing part is arranged in fluid communication with the water intake pipe. ## Claims ### Claim 1 A seawater desalination unit, comprising: an exit filtration part, having at least one exit filter disposed thereat; a frame, configured with a reservoir, a water intake pipe and a water discharge pipe in a manner that the reservoir is formed with a first water storage volume, the water intake pipe is connected to the reservoir respectively via one end thereof, while allowing a first check valve to be disposed at a position between the reservoir and the water intake pipe, and the water discharge pipe is connected to the exit filtration part and the reservoir respectively via two opposite ends thereof, while allowing a second check valve to be disposed at a position between the reservoir and the water discharge pipe; and a water drawing part, arranged in fluid communication with the water intake pipe for generating a water-drawing pressure to force a fluid to flow from an end of the water intake pipe that is not connected to the reservoir into the reservoir of the frame. ### Claim 2 (depends on 1) The seawater desalination unit of claim 1, wherein the water drawing part comprises: a flexible housing, disposed outside the frame; a piston, disposed inside the flexible housing while being arranging inside a water-drawing tank of the frame that is arranged in fluid communication with the water intake pipe; and an elastic element, arranged inside the flexible housing at a position between the flexible housing and the piston to be used for providing a resilience force to work upon the flexible housing and the piston in a manner that the piston is brought along to move reciprocatively inside the water-drawing tank between the pressing of the flexible housing from the exterior thereof and the releasing of the elastic element. ### Claim 3 (depends on 2) The seawater desalination unit of claim 2, wherein the water intake pipe is extending parallel to a first direction by a length, and the piton is disposed for allowing the same to move reciprocatively in a moving direction parallel to a second direction, while the first direction and the second direction are orientated perpendicular to each other. ### Claim 4 (depends on 3) The seawater desalination unit of claim 3, wherein the first direction is orientated perpendicular to a level surface of the fluid. ### Claim 5 (depends on 2) The seawater desalination unit of claim 2, wherein the water-drawing tank is formed with a second water storage volume, and the second water storage volume is equal to the first water storage volume. ### Claim 6 (depends on 2) The seawater desalination unit of claim 2, wherein the product of the resilience force of the elastic element and the sectional area of the piston equals to the water-drawing pressure. ### Claim 7 (depends on 2) The seawater desalination unit of claim 2, wherein the second check valve is designed to withstand an accumulation pressure, and the accumulation pressure of the second check valve equals to the product of the sectional area of the piston and the amount of time that the elastic element is being pressed. ### Claim 8 (depends on 2) The seawater desalination unit of claim 2, wherein the flexible housing is corrugated in a wave-like shape, or the flexible housing is formed into an oval ball-like shape. ### Claim 9 (depends on 2) The seawater desalination unit of claim 2, wherein the flexible housing is made of a water resistance material selected from the group consisting of: a rubber and a plastic. ### Claim 10 (depends on 1) The seawater desalination unit of claim 1, wherein an end of the exit filtration part that is arranged opposite to another end of the exit filtration part connecting to the frame is formed with a tube-like structure. ### Claim 11 (depends on 10) The seawater desalination unit of claim 10, wherein the tube-like structure is configured with a flexible structure for allowing the tube-like structure to become bendable and retractable. ### Claim 12 (depends on 1) The seawater desalination unit of claim 1, wherein the exit filtration part is configured with a first shell, and the at least one exit filter of the exit filtration part is disposed inside the first shell. ### Claim 13 (depends on 12) The seawater desalination unit of claim 12, wherein the first shell and the frame are respectively configured with mating screw threads for allowing the exit filtration part to mount detachably to the frame. ### Claim 14 (depends on 12) The seawater desalination unit of claim 12, wherein the at least one exit filter includes a resin filter formed by the mixing of cation exchange resin particles and anion exchange resin particles. ### Claim 15 (depends on 14) The seawater desalination unit of claim 14, wherein the resin filter is disposed sandwiching between two membrane filters. ### Claim 16 (depends on 1) The seawater desalination unit of claim 1, wherein the at least one exit filter includes a seawater desalination reverse osmosis membrane. ### Claim 17 (depends on 16) The seawater desalination unit of claim 16, wherein seawater desalination reverse osmosis membrane is disposed sandwiching between two membrane filters. ### Claim 18 (depends on 1) The seawater desalination unit of claim 1, wherein the exit filtration part had a third water storage volume, and the third water storage volume is equal to the first water storage volume. ### Claim 19 (depends on 1) The seawater desalination unit of claim 1, wherein the water intake pipe is configured with an entrance filtration part, and the entrance filtration part has at least one entrance filter disposed thereat at a position for enabling the fluid to be drawn and flow through the at least one entrance filter of the entrance filtration part into the water intake pipe and thus enter the reservoir. ### Claim 20 (depends on 19) The seawater desalination unit of claim 19, wherein the entrance filtration part is configured with a second shell, and the at least one entrance filter of the entrance filtration part is disposed inside the second shell. ### Claim 21 (depends on 20) The seawater desalination unit of claim 20, wherein the second shell is formed like an elongated tube, and the first shell is extending in a direction parallel to a first direction by a length while enabling the first direction to be orientated perpendicular to a level surface of the fluid. ### Claim 22 (depends on 20) The seawater desalination unit of claim 20, wherein the second shell and the frame are respectively configured with mating screw threads for allowing the entrance filtration part to mount detachably to the frame. ### Claim 23 (depends on 19) The seawater desalination unit of claim 19, wherein each of the at least one entrance filter is composed of a membrane filter and at least one activated carbon filter, while allowing the at least one activated carbon filter to be disposed sandwiching between the membrane filter and the frame. ### Claim 24 (depends on 1) The rescue unit of claim 1, wherein the water intake pipe is further configured with a third check valve, and the third check valve is provided for preventing the fluid in the water intake pipe to backwash out of the water intake pipe. ### Claim 25 (depends on 1) The seawater desalination unit of claim 1, wherein the water discharge pipe is further configured with a reverse osmosis (RO) unit. ### Claim 26 (depends on 1) The seawater desalination unit of claim 1, wherein the frame is made of a water resistance material. ### Claim 27 (depends on 1) The seawater desalination unit of claim 1, wherein the reservoir is charged with air to a predefined pressure.