# US 2017/0283282 A1 · Siphon trap disinfection system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0283282 A1 - Document ID: US20170283282A1 - Status: Published application - Kind: A1 - Application number: 15/090,330 - Filed: 2016-04-04 - Published: 2017-10-05 - Earliest claimed: 2016-04-04 - Inventors: GHOLAM HOSSEIN ZERESHKIAN - Web page: https://patentgrep.com/patent/US20170283282A1 ## CPC - C02F 1/4606: {for producing oligodynamic substances to disinfect the water} - C02F 1/008: {Control or steering systems not provided for elsewhere in subclass C02F} - E03C 1/126: Installations for disinfecting or deodorising waste-water plumbing installations - C02F 2103/003: {Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms} - C02F 2303/04: Disinfection - C02F 2307/14: Treatment of water in water supply networks, e.g. to prevent bacterial growth - E03C 2201/40: Arrangement of water treatment devices in domestic plumbing installations - 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) - E03C: DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER (not connected to either water-supply main or to waste pipe A47K; devices of the kind used in the ground E03B, E03F); SINKS ## Abstract A disinfection device for a trapped-liquid comprising of a drain trap for a liquid flow having an inner surface to trap a volume of the trapped-liquid and a helical coil capable of generating metal ions to eliminate biological cells attached to said drain trap. An electric valve is connected to a tap water and the helical coil and a power supply provides a current and a voltage to the helical coil for a period of ionization and a sensor system installed in the drain trap to sense flow of a liquid through the drain trap. A timer system to determine the length of a stagnant-time that the trapped-liquid is stagnant in the drain trap; and to determine the length of an ionization-time for the period of ionization. ## Claims ### Claim 1 A disinfection device for a trapped-liquid comprising: a. a drain trap for a liquid flow having an inner surface to trap a volume of said trapped-liquid; b. a helical coil capable of generating metal ions to eliminate biological cells attached to said drain trap; c. an electric valve connected to a tap water from a distal end and connected to said helical coil from a proximal end; d. a power supply to provide a current and a voltage to said helical coil for a period of ionization; e. a sensor system installed in the drain trap to sense flow of a liquid through said drain trap; f. a timer system to determine the length of a stagnant-time that said trapped-liquid is stagnant in the drain trap, and to determine the length of an ionization-time for said period of ionization, and g. a control system to control said period of ionization, and to turn on the power to the helical coil and said electric valve when a timer system indicates that the trapped-liquid is stagnant for a predefined said stagnant-time and turn off the power when the ionization is performed for a predefined said ionization-time or when the liquid flows in the drain. ### Claim 2 (depends on 1) The disinfection device of claim 1, wherein said drain trap is any one of a U-trap, a P-trap, a J-trap, a full S-trap, a ¾ S-trap, a bag trap, or a Y-trap. ### Claim 3 (depends on 1) The disinfection device of claim 1, wherein said helical coil comprise of a copper-silver alloy. ### Claim 4 (depends on 3) The disinfection device of claim 3, wherein said copper-silver alloy comprises of 60-90% copper and 10-40% silver. ### Claim 5 (depends on 1) The disinfection device of claim 1, wherein said helical coil made from the same material and said control system alternates the polarity. ### Claim 6 (depends on 1) The disinfection device of claim 1, wherein said power supply is a DC battery. ### Claim 7 (depends on 1) The disinfection device of claim 1, wherein said sensor being any one of a conductive sensor, a capacitive sensor, a hydrostatic or a float sensor, a laser based sensor, or an acoustic sensor. ### Claim 8 (depends on 1) The disinfection device of claim 1, wherein said sensor being a conductive sensor comprising of a first and a second conductive plates, wherein the first plate being installed inside the trapped-liquid and the second plate being installed outside of the trapped-liquid, and thereby, the resistance between the two plates determines if the liquid is flowing or not. ### Claim 9 (depends on 1) The disinfection device of claim 1, wherein said ionization-time is 3 to 10 minutes. ### Claim 10 A disinfection device for a trapped-liquid comprising: a. a metallic drain trap having an interior defining a flow-path, said metallic drain trap being a first electrode; b. a copper wire being a second electrode is placed inside said flow-path to generate metal ions to eliminate biological cells, the copper wire is not in contact with said metallic drain trap; c. a power supply to provide a current and a voltage to said copper wire for a period of ionization; d. a sensor system installed in the drain trap to sense flow of a liquid through said drain trap; e. a timer system to determine the length of a stagnant-time that said trapped-liquid is stagnant in the drain trap; and to determine the length of an ionization-time for said period of ionization; and f. a control system to control said period of ionization, and to turn on the power to the copper wire when a timer system indicates that the trapped-liquid is stagnant for a predefined said stagnant-time and turn off the power when the ionization is performed for a predefined said ionization-time or when the liquid flows in the drain. ### Claim 11 A method of disinfecting a trapped-liquid in a drain trap having an inner surface, said method comprising steps of; a. attaching a helical coil to the drain trap between a tap water and an electric valve; b. installing a sensor on the drain trap to sense the flowing of a liquid inside the drain; c. turning on a power to said helical coil and said electric valve if the liquid is not flowing for a predefined stagnant-time; d. ionizing the tap water for a predefined ionization-time, and then stopping the ionization, and e. repeating steps c. and e. ### Claim 12 (depends on 11) The method of claim 11, wherein said stagnant-time is five minutes. ### Claim 13 (depends on 11) The method of claim 11, wherein said ionization-time is obtained from: t=(predetermined concentration (ppb)−b)V/aI wherein t is the ionization time in seconds, I is the current in mA that is applied to the electrode, V is the volume of the trapped water in liters, and wherein constants a and b are predetermined based on the size and shape of a drain. ### Claim 14 (depends on 13) The method of claim 13, wherein a=10.7 and b=100. ### Claim 15 (depends on 13) The method of claim 13, wherein said predetermined concentration of ions is 800-1200 ppb of a copper ion in the trapped-liquid. ### Claim 16 (depends on 13) The method of claim 13, wherein said predefined ionization-time is 3 to 10 minutes. ### Claim 17 (depends on 13) The method of claim 13, wherein said method further alternating the polarity in said helical coil.