TH25650B - Salt shaker - Google Patents

Abstract

The DC60 (19/01/42) desalination unit is exposed for the removal of dissolved solids from seawater and brackish water. The desalination unit (10) consists of a fitting (12) through which a pump (14), driven by a motor (16), pumps seawater or brackish water under pressure. The desalination tube (76) inside the fitting (12) contains a semipermeable material which acts as a reverse osmosis membrane through which the permeable substance is forced to separate it from the seawater or brackish water. The dissolved solids in the brackish or seawater are trapped in the desalination passage of the tube (76). Three electrical coils (94, 96 and 98) surround such tube (76) and are fixed in the walls of the fitting (12). The coils are fed by The current from the supply (112), which as it should be, is a three-phase 50 Hz 380 volt supply, the various windings are also connected by wire (108) to a variable frequency AC driver (110), which in turn is connected to the motor (16). The windings (94, 96 and 98) force a magnetic field onto the seawater or brackish water in the salt containment passages, which controls the rate at which water permeates the reverse osmosis membrane and also prevents clogging. In addition, the windings (94, 96 and 98) also act as chokes for the motor (16). The desalination unit is exposed for the removal of dissolved solids from seawater and brackish water. The desalination unit (10) consists of a fitting (12) in which a pump (14), driven by a motor (16), pumps the seawater or brackish water under pressure. The desalination tube (76) inside the fitting (12) contains a semipermeable material which acts as a reverse osmosis membrane and through which the permeation is forced. A passage is created to separate it from seawater or brackish water. Dissolved solids in the brackish or seawater are trapped in the salt containment passage of the pipe (76). Three electrical coils (94, 96 and 98) surround the pipe (76) and are embedded in the walls of the enclosure (12). The coils are fed with current from a supply (112), which, as it should be, is a three-phase 50 Hz 380 volt supply. The coils are also connected by wires (108) to a variable frequency AC drive (110), which is simultaneously connected to a motor (16). The coils (94, 96 and 98) exert a magnetic field on the seawater or brackish water in the salt containment passage, which affects the rate at which water permeates the reverse osmosis membrane and also prevents clogging. In addition, the coils (94, 96 and 98) also act as chokes for the motor (16).

Claims (11)

1. A method for removing dissolved solids in water, in which the water is fed through a salt trap sealed by a reverse osmosis membrane, and the membrane, water in the salt trap and water that has passed through it are exposed to a variable magnetic field, which is specific in the step of applying a variable current to each of at least two coils (96,98) spaced apart along the length of the salt trap. The water in the salt trap is in the magnetic field of these coils, and the magnetic fields generated by the coils are of different phases and overlap. 2. The method according to claim 1 consists of the procedure of feeding three-phase alternating current to three windings (94, 96, 98-162, 164, 166) spaced apart along the length of the aforementioned salt containment passage. Each winding is fed one phase at a time, in the order of the phases mentioned. 3. A device for removing dissolved solids from water, which consists of a long, narrow salt trap passage sealed by a reverse osmosis membrane and pathways (14,16) for supplying water to the trap passage so that water flows through it. The device is characterized by having at least two coils (96,98) spaced apart along the length of the trap passage and pathways (112) for applying varying voltages to each coil so that each coil generates a variable magnetic field. This magnetic field is phase different and overlapping, and the water in the trap passage, when the device is in use, is exposed to the variable magnetic field generated by the coils. 4. The instrument according to claim 3 consists of a longitudinal fitting (12) and a longitudinal tube (76) inside the said fitting. The tube contains a semipermeable membrane that seals off the passage for a large amount of salt. The coils are spaced apart along the length of the fitting. 5. The instrument according to claim 4 consists of three windings (94,96,98-162,164, 166) spaced apart along the length of the sleeve and the path of the three-phase alternating current. Each winding is connected to one phase in the order of phase, where the field generated by the three windings is not in phase with one another. 6. The device according to claim 5, where the aforementioned path for water supply consists of a pump (14) driven by a three-phase electric motor (16), the aforementioned motor (16) is connected to the aforementioned three-phase alternating power supply (112) through a winding which acts as a choke for the motor. 7. The device according to claim 6 and consisting of a variable frequency AC drive (110) between the aforementioned coils and the aforementioned motor. 8. The instrument according to claim 7 and consisting of a pressure sensor (114) for the sensing of the pressure at the pressure port of the pump and for feeding control signals to the aforementioned drive (110), in which the drive controls the aforementioned motor in such a manner that it maintains a constant pressure at the said port. 9. The device according to claim 4 consists of a metal plate (52) with numerous holes (54) in the plate between the aforementioned pathway (14) for water intake and the aforementioned pipe (76). The holes in the metal plate divide the water into streams and direct the aforementioned water streams to the end of the pipe (76), where the water entering the brine passages circulates within them and there is a pressure drop at the aforementioned metal plate. 10. The device under claim 4, in which the aforementioned (12) fitting has a cylindrical wall made of a fixed resin reinforced with such wire fibers, is embedded in the aforementioned cylindrical wall. 11. The device, in accordance with claim 10, consists of layers of gel (100, 102) that enter radially and exit radially from each coil for protection and as a shield to each coil.