초록 ▼

A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption t

A device (1) for purification of water driven by gravity through a purification unit between an upper dirt water container (2) and a lower clean water tank (3). A backwash system may be integrated, the system comprising a receptacle (8) for accumulation of the backwash water to prevent consumption thereof by mistake.

대표청구항 ▼

1. A device (1) for water purification, the device (1) comprising a rigid dirt water container (2) for accumulating dirt water and a purification unit (5) for purifying the dirt water, wherein the dirt water container (2) is arranged above the purification unit (5) for driving water through the puri

1. A device (1) for water purification, the device (1) comprising a rigid dirt water container (2) for accumulating dirt water and a purification unit (5) for purifying the dirt water, wherein the dirt water container (2) is arranged above the purification unit (5) for driving water through the purification unit (5) by gravity; wherein the purification unit (5) comprises a filter housing (5′) enclosing a purification medium that is separating an upstream side of the purification unit (5) from a downstream side of the purification unit (5) such that water in the purification unit (5) can flow from the upstream side to the downstream side only through the purification medium;wherein the purification unit (5) is a filtration unit (5) and the purification medium is a microporous filtration membrane;wherein the dirt water container (2) has a container outlet (10), and the filter housing (5′) has an upstream inlet (19) connected to the upstream side, wherein the container outlet (10) and the upstream inlet (19) are fluid-flow-connected by a first flow connector (9) for receiving dirt water from the dirt water container (2) into the upstream side of the purification unit (5);wherein the device comprises a rigid clean water tank (3) fluid-flow connected to the downstream side through a downstream outlet (29A) for receiving purified water from the downstream side;wherein the dirt water container (2) is arranged above the clean water tank (3) by a rigid connection supporting the dirt water container above the clean water tank and with a clearance of at least 5 cm between the clean water tank (3) and the dirt water container (2),wherein, the rigid connection (36, 36′) comprises a rotationally hinged (42) profile (47) for varying the distance between the clean water tank (3) and the dirt water container (2), wherein the rotationally hinged (42) profile (47) is provided with an angle varying relatively to the clean water tank (3) in dependency of the distance between the clean water tank (3) and the dirt water container (2),wherein the profile (47) is hinged in a first hinge (43, 44) at the clean water tank (3) and is hinged in a second hinge (42) at the dirt water container (2), wherein the dirt water container (2) has an upper opening having a dimension larger than a cross section of the clean water tank (3) for collapsibly receiving the clean water tank (3) inside the dirt water container (2) in storage,wherein the rigid connection (36, 36′) has a first state where the dirt water container (2) and the clean water tank (3) are in a closed position, which is a storage or transport state in which the dirt water container partly encloses the clean water tank, and the connection (36, 36′) has a second state where the clean water tank (3) and the dirt water container (2) are in a remote operational condition for water filtration, andwherein the distance between the clean water tank and the dirt water container in the second state is between 5 cm and 100 cm larger than in the closed position. 2. A device (1) for water purification, the device (1) comprising a rigid dirt water container (2) for accumulating dirt water and a purification unit (5) for purifying the dirt water, wherein the dirt water container (2) is arranged above the purification unit (5) for driving water through the purification unit (5) by gravity; wherein the purification unit (5) comprises a filter housing (5′) enclosing a purification medium that is separating an upstream side of the purification unit (5) from a downstream side of the purification unit (5) such that water in the purification unit (5) can flow from the upstream side to the downstream side only through the purification medium;wherein the purification unit (5) is a filtration unit (5) and the purification medium is a microporous filtration membrane;wherein the dirt water container (2) has a container outlet (10), and the filter housing (5′) has an upstream inlet (19) connected to the upstream side, wherein the container outlet (10) and the upstream inlet (19) are fluid-flow-connected by a first flow connector (9) for receiving dirt water from the dirt water container (2) into the upstream side of the purification unit (5);wherein the device comprises a rigid clean water tank (3) fluid-flow connected to the downstream side through a downstream outlet (29A) for receiving purified water from the downstream side,wherein the dirt water container (2) has an upper opening having a dimension larger than a cross section of the clean water tank (3) for collapsibly receiving the clean water tank (3) inside the dirt water container (2) in storage,wherein the device comprises a compressible backwash bulb (7) that is fluid-flow connected to the downstream side (53) for receiving clean water from the purification unit (5) after filtration and for backwashing the microporous filtration membrane in reverse direction;wherein the device (1) comprises a distributor (25); the distributor comprising an inlet channel (29) connected to the downstream outlet (29A) for receiving clean water from the downstream side therefrom; the distributor comprising a first distributor outlet (20) different and remote from the inlet channel (29), the first distributor outlet (20) being fluid-flow connected to the compressible backwash bulb (7) for dispensing filtered water to the compressible backwash bulb (7) and a second distributor outlet (30) different and remote from the inlet channel (29) and different and remote from the first distributor outlet (20), the second distributor outlet (30) being fluid-flow connected to the clean water tank for providing filtered water into the clean water tank (3),wherein the compressible backwash bulb and the clean water tank are fluid-flow connected to the distributor functionally in parallel through the first and the second outlet, respectively, for flow of filtered water from the inlet through the distributor and distribution thereof either through the first outlet into the compressible backwash bulb or through the second outlet into the clean water tank,the distributor (25) further comprising a one-way check valve (26A, 26B, 32) arranged between the first distributor outlet (20) and the second distributor outlet (30) for preventing backwash water from the compressible backwash bulb from entering the clean water tank (3) when water is forced backwards through the first distributor outlet (20) due to compression of the backwash bulb (7),wherein the dirt water container (2) is arranged above the clean water tank (3) by a rigid connection supporting the dirt water container above the clean water tank,wherein, the rigid connection (36, 36′) comprises a rotationally hinged (42) profile (47) for varying the distance between the clean water tank (3) and the dirt water container (2), wherein the rotationally hinged (42) profile (47) is provided with an angle varying relatively to the clean water tank (3) in dependency of the distance between the clean water tank (3) and the dirt water container (2),wherein the profile (47) is hinged in a first hinge (43, 44) at the clean water tank (3) and is hinged in a second hinged (42) at the dirt water container (2),wherein the rigid connection (36, 36′) has a first state where the dirt water container (2) and the clean water tank (3) are in a closed position, which is a storage or transport state in which the dirt water container partly encloses the clean water tank, and the rigid connection (36, 36′) has a second state where the clean water tank (3) and the dirt water container (2) are in a remote operational condition for water filtration. 3. A device according to claim 2, wherein the check valve is a ball valve, comprising a valve housing (26A) containing a ball (26B) and with a ball seat (32) in a wall of the valve housing (26A) on a side adjacent to the second distributor outlet (30) and remote to the first distributor outlet (20), wherein the distributor (25) is configured for preventing water to enter the second distributor outlet (30) during backwash when backwash water from the bulb (7) is pressing the ball (26B) in the valve housing (26A) against the ball seat (32). 4. A device according to claim 2, wherein a backwash tube (12, 12A) is provided which is connected to the upstream side of the filtration unit and connected to a backwash receptacle and configured for receiving contaminated backwash water from the filtration unit at the upstream side of the filtration unit and dispensing the backwash water into the backwash receptacle when water is pressed from the downstream side of the filter unit through the membrane to the upstream side by compression of the backwash bulb and further from the upstream side of the filtration unit through the backwash tube (12, 12A) into the backwash receptacle (8); wherein the backwash receptacle (8) is different and separate from the dirt water container, wherein the backwash receptacle is configured for collection of backwash water in the backwash receptacle for minimizing the risk for unintended consumption of contaminated backwash water. 5. A device according to claim 2, wherein the compressible backwash bulb is manually compressible and is fluid-flow connected to the first distributor outlet (20) by a tube (57) for receiving of clean water in the backwash bulb (7). 6. A device according to claim 4, wherein a one way check valve is provided between the dirt water container (2) and the upstream side of the filtration unit (5) for preventing backwash water to be pressed into the dirt water container (2) wherein the check valve is configured for closing by pressure generated in the backwash water due to compression of the backwash bulb. 7. A device (1) for water purification, the device (1) comprising a dirt water container (2) for accumulating dirt water and a purification unit (5) for purifying the dirt water, wherein the dirt water container (2) is arranged above the purification unit (5) for driving water through the purification unit (5) by gravity; wherein the purification unit (5) comprises a filter housing (5′) enclosing a purification medium that is separating an upstream side of the purification unit (5) from a downstream side of the purification unit (5) such that water in the purification unit (5) can flow from the upstream side to the downstream side only through the purification medium;wherein the purification unit (5) is a filtration unit (5) and the purification medium is a microporous filtration membrane;wherein the dirt water container (2) has a container outlet (10), and the filter housing (5′) has an upstream inlet (19) connected to the upstream side, wherein the container outlet (10) and the upstream inlet (19) are fluid-flow-connected by a first flow connector (9) for receiving dirt water from the dirt water container (2) into the upstream side of the purification unit (5);wherein the device comprises a clean water tank (3) fluid-flow connected to the downstream side through a downstream outlet (29A) for receiving purified water from the downstream side;wherein the dirt water container (2) is arranged above the clean water tank (3) by a rigid connection supporting the dirt water container above the clean water tank and with a clearance of at least 5 cm between the clean water tank (3) and the dirt water container (2),wherein the dirt water container has an upper opening (2′) having a dimension larger than a cross section of the clean water tank (3) for collapsibly receiving the clean water tank (3) inside the dirt water container (2) in storage,wherein the dirt water container comprises an antimicrobial unit (60) that comprises a compartment (63) comprising a downward directed bottom with a pinhole (66) in the bottom, the pinhole having a diameter for preventing water from entering the pinhole due to surface tension of the water, the compartment containing an antimicrobial source (64), the compartment being sealed with an exception of the bottom pin hole (66) for escape of the antimicrobial in gas form from the sealed compartment (64) for enriching the dirt water,wherein the rigid connection (36, 36′) comprises a rotationally hinged (42) profile (47) for varying the distance between the clean water tank (3) and the dirt water container (2), wherein the rotationally hinged (42) profile (47) is provided with an angle varying relatively to the clean water tank (3) in dependency of the distance between the clean water tank (3) and the dirt water container (2),wherein the profile (47) is hinged in a first hinge (43, 44) at the clean water tank (3) and is hinged in a second hinge (42) at the dirt water container (2),wherein the rigid connection (36, 36′) has a first state where the dirt water container (2) and the clean water tank (3) are in a closed position, which is a storage or transport state in which the dirt water container partly encloses the clean water tank, and the rigid connection (36, 36′) has a second state where the clean water tank (3) and the dirt water container (2) are in a remote operational condition for water filtration. 8. A device according to claim 7, wherein the antimicrobial source is a tablet containing gas-releasable chlorine. 9. A device (1) for water purification, the device (1) comprising a dirt water container (2) for accumulating dirt water and a purification unit (5) for purifying the dirt water, wherein the dirt water container (2) is arranged above the purification unit (5) for driving water through the purification unit (5) by gravity; wherein the purification unit (5) comprises a filter housing (5′) enclosing a purification medium that is separating an upstream side of the purification unit (5) from a downstream side of the purification unit (5) such that water in the purification unit (5) can flow from the upstream side to the downstream side only through the purification medium;wherein the purification unit (5) is a filtration unit (5) and the purification medium is a microporous filtration membrane;wherein the dirt water container (2) has a container outlet (10), and the filter housing (5′) has an upstream inlet (19) connected to the upstream side, wherein the container outlet (10) and the upstream inlet (19) are fluid-flow-connected by a first flow connector (9) for receiving dirt water from the dirt water container (2) into the upstream side of the purification unit (5);wherein the device comprises a rigid clean water tank (3) fluid-flow connected to the downstream side through a downstream outlet (29A) for receiving purified water from the downstream side;wherein the dirt water container (2) is arranged above the clean water tank (3) by a rigid connection supporting the dirt water container above the clean water tank and with a clearance of at least 5 cm between the clean water tank (3) and the dirt water container (2),wherein the dirt water container (2) has an upper opening having a dimension larger than a cross section of the clean water tank (3) for collapsibly receiving the clean water tank (3) inside the dirt water container (2) in storage,wherein the filtration unit (5) has an upstream outlet (23) in the filter housing (5′) for outlet of fluid from the upstream side, the upstream outlet (23) being different and separate from the upstream inlet (19), wherein a vent tube (12) is connected to the upstream outlet (23), the vent tube (12) extending upwards and having a vent opening (22) which opens into atmosphere for venting of air from the upstream side, wherein the vent opening (22) is provided at a level closer to a top than to a bottom (16) of the dirt water container (2), wherein the upstream outlet (23) is different and separate from the upstream inlet (19),wherein the rigid connection (36, 36′) comprises a rotationally hinged (42) profile (47) for varying the distance between the clean water tank (3) and the dirt water container (2), wherein the rotationally hinged (42) profile (47) is provided with an angle varying relatively to the clean water tank (3) in dependency of the distance between the clean water tank (3) and the dirt water container (2),wherein the profile (47) is hinged in a first hinge (43, 44) at the clean water tank (3) and is hinged in a second hinge (42) at the dirt water container (2),wherein the rigid connection (36, 36′) has a first state where the dirt water container (2) and the clean water tank (3) are in a closed position, which is a storage or transport state in which the dirt water container partly encloses the clean water tank, and the rigid connection (36, 36′) has a second state where the clean water tank (3) and the dirt water container (2) are in a remote operational condition for water filtration. 10. A device according to claim 9, wherein the vent opening (22) is provided at a reference height, the reference height being at most 5 cm from an upper edge (14) of the dirt water container (2). 11. A device according to claim 9, wherein the device comprises a manually compressible backwash bulb (7) that is fluid-flow connected to the downstream side for receiving of clean water in the backwash bulb (7) for backwash purposes; wherein a backwash tube (12, 12A) is provided which is connected to the upstream side for receiving contaminated backwash water and connected to a backwash receptacle (8) for dispensing the contaminated backwash water into the backwash receptacle when water is pressed from the downstream side through the membrane to the upstream side by compression of the backwash bulb and further from the upstream side through the backwash tube (12, 12A) into the backwash receptacle (8); wherein the backwash receptacle (8) is different and separate from the dirt water container, wherein the backwash receptacle is configured for collection of backwash water in the backwash receptacle for minimizing the risk for unintended consumption of contaminated backwash water; wherein the backwash tube (12, 12A) is an integral part of the vent tube (12) for venting air from the upstream side and dispensing backwash water through the same tube (12, 12A). 12. A device according to claim 2, wherein the dirt water container (2) is arranged above the clean water tank (2) and with a clearance of at least 5 cm between the clean water tank (3) and the dirt water container (2). 13. A device according to claim 2, wherein the downstream outlet (29A) is only provided at a level above any uppermost microporous surface of the microporous filtration membrane for maintaining a water level in the filtration unit (5) above the uppermost microporous surface and for preventing the microporous filtration membrane from drying out. 14. A device according to claim 2, wherein the device is a portable device with dry weight of less than 30 kg, with a volume of the dirt water container of less than 30 liters, and with a volume of the clean water tank of less than 30 liters. 15. A device according to claim 2, wherein a lever (56) is provided for compression of the backwash bulb (7) for backwash purposes by operating the lever (56), wherein the lever is supported by the clean water tank. 16. A device according to claim 15, wherein the lever (56) comprises a rigid lever tube (57) fluid-flow connecting the backwash bulb (7) with the downstream outlet (29A) of the filter housing (5′) for flow of backwash water between the backwash bulb and the filter housing through the lever tube. 17. A device according to claim 16, wherein the rigid lever tube (57) is fluid-flow connected with the first distributor outlet (20). 18. A device according to claim 17, wherein the rigid lever tube (57) has a first end that is mounted pivotal adjacent the distributor (25); the rigid lever tube (57) having an opposite end, remote from the distributor, the opposite end being provided with a handle (70) for operating the lever (56). 19. A device according to claim 2, wherein a one way check valve is provided between the dirt water container (2) and the upstream side of the filtration unit (5) for preventing backwash water from backwashing to be pressed into the dirt water container (2), wherein the check valve is configured for closing by pressure generated in the backwash water due to compression of the backwash bulb. 20. A device according to claim 2, wherein the device comprises a floater 58 in the clean water tank for following the water level in the clean water tank; the floater being functionally connected to the distributor and configured for shutting off the flow from second distributor outlet 30 into the clean water tank when the floater rises to an upper water level in the clean water tank in order to prevent overfilling of the clean water tank. 21. A device according to claim 4, wherein the backwash receptacle is located at the side of the dirt water container (2). 22. A device according to claim 15, wherein the lever has a pivot mount at the distributor. 23. A device according to claim 1, wherein the device is a portable device with dry weight of less than 30 kg, with a volume of the dirt water container of less than 30 liters, and with a volume of the clean water tank of less than 30 liters.