# US 10,501,922 B2 · Sanitary washing device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,922 B2 - Document ID: US10501922B2 - Status: Granted - Kind: B2 - Application number: 15/708,691 - Filed: 2017-09-19 - Published: 2018-01-04 - Granted: 2019-12-10 - Earliest claimed: 2015-03-27 - Assignees: Toto Ltd. - Applicants: Toto Ltd. - Inventors: Toshinari Yaoka; Yoichi Murase; Hiroaki Amemori - Web page: https://patentgrep.com/patent/US10501922B2 ## CPC - E03D 9/08: Devices in the bowl producing upwardly-directed sprays; Modifications of the bowl for use with such devices (showers A47K3/28; bathing devices for special therapeutic or hygienic purposes A61H33/00, for specific parts of the body A61H35/00 ){; Bidets; Combinations of bowls with urinals or bidets; Hot-air or other devices mounted in or on the bowl, urinal or bidet for cleaning or disinfecting} - A61L 2/26: Accessories - B05B 1/12: capable of producing different kinds of discharge, e.g. either jet or spray (having selectively-effective outlets B05B1/16) - B05B 1/16: having selectively- effective outlets - B05B 9/002: {incorporating means for heating or cooling, e.g. the material to be sprayed} - B05B 12/008: {integrated in or attached to a discharge apparatus, e.g. a spray gun} - B05B 12/122: {responsive to presence or shape of target (B05B12/124 takes precedence)} - B05B 15/70: Arrangements for moving spray heads automatically to or from the working position - C02F 1/325: {Irradiation devices or lamp constructions} - A61L 2/10: Ultraviolet [UV] radiation - A61L 2202/11: Apparatus for generating biocidal substances, e.g. vaporisers, UV lamps - C02F 2103/42: from bathing facilities, e.g. swimming pools - C02F 2201/3228: Units having reflectors, e.g. coatings, baffles, plates, mirrors - C02F 2303/04: Disinfection - C02F 2307/06: Mounted on or being part of a faucet, shower handle or showerhead - E03D: WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) - 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) ## Abstract A sanitary washing device including: a nozzle discharging water toward a human body private part; a water guide part including a pipe line reaching from a water supply source to the nozzle, and guiding water supplied from the water supply source to the nozzle; a vacuum breaker provided on a path of the water guide part, and taking air into the pipe line when water does not flow in the water guide part; and an ultraviolet irradiation part provided between the vacuum breaker and the nozzle on the path of the water guide part, and including a flow channel flowing water and a light emitting part irradiating ultraviolet rays to the water flowing in the flow channel is provided. ## Claims ### Claim 1 A sanitary washing device comprising: a nozzle discharging water toward a human body private part; a water guide part including a pipe line reaching from a water supply source to the nozzle, and guiding water supplied from the water supply source to the nozzle; a vacuum breaker provided on a path of the water guide part, and taking air into the pipe line when water does not flow in the water guide part; and an ultraviolet irradiation part provided between the vacuum breaker and the nozzle on the path of the water guide part, and including a flow channel flowing water and a light emitting part irradiating ultraviolet rays to the water flowing in the flow channel. ### Claim 2 (depends on 1) The sanitary washing device according to claim 1, further comprising: a flow channel switching part provided on the path of the water guide part, the nozzle including a plurality of water discharge ports, the flow channel switching part switching a state of communicating with the pipe line and a state of not communicating with the pipe line with respect to each of the plurality of water discharge ports, and the ultraviolet irradiation part being provided between the vacuum breaker and the flow channel switching part. ### Claim 3 (depends on 2) The sanitary washing device according to claim 2, wherein the flow channel includes a main part, and a reflection part provided inside the main part and reflecting the ultraviolet rays, and a reflectance of the reflection part to the ultraviolet rays is higher than a reflectance of the main part. ### Claim 4 (depends on 2) The sanitary washing device according to claim 2, wherein at least a portion of the flow channel has a straight pipe shape, the light emitting part is a light emitting element, and an irradiation direction of the ultraviolet rays of the light emitting element is the same as an extending direction of at least the portion of the flow channel. ### Claim 5 (depends on 2) The sanitary washing device according to claim 2, wherein the light emitting part is a mercury lamp extending in one direction, and the flow channel is formed in a form being along the one direction of the mercury lamp. ### Claim 6 (depends on 1) The sanitary washing device according to claim 1, wherein the flow channel includes a main part, and a reflection part provided inside the main part and reflecting the ultraviolet rays, and a reflectance of the reflection part to the ultraviolet rays is higher than a reflectance of the main part. ### Claim 7 (depends on 1) The sanitary washing device according to claim 1, wherein at least a portion of the flow channel has a straight pipe shape, the light emitting part is a light emitting element, and an irradiation direction of the ultraviolet rays of the light emitting element is the same as an extending direction of at least the portion of the flow channel. ### Claim 8 (depends on 1) The sanitary washing device according to claim 1, wherein the light emitting part is a mercury lamp extending in one direction, and the flow channel is formed in a form being along the one direction of the mercury lamp. ### Claim 9 (depends on 1) The sanitary washing device according to claim 1, further comprising: a solenoid valve being provided on an upstream side from the vacuum breaker on the path of the water guide part, the solenoid valve being configured to open and close the pipe line, the solenoid valve being configured to switch supplying water supplied from the water supply source to the nozzle and stopping water supply to the nozzle; and a controller being configured to control the ultraviolet irradiation part, the controller allowing an operation of the ultraviolet irradiation part in a state that the solenoid valve is opening, and the controller stopping the operation of the ultraviolet irradiation part in a state that the solenoid valve is closing. ### Claim 10 (depends on 1) The sanitary washing device according to claim 1, further comprising: a casing; a nozzle motor being configured to move the nozzle between a stored position and an advanced position, the stored position being a position that the nozzle is stored in the casing, the advanced position being a position that the nozzle is advanced ahead from the casing; and a controller being configured to control the ultraviolet irradiation part and the nozzle motor, the controller being configured to perform a prewashing mode and a human body washing mode, the prewashing mode being a mode to flow water to the pipe line in a state that the nozzle is positioned in the stored position, the human body washing mode being a mode to discharge water toward a human body private part from the nozzle in a state that the nozzle is positioned in the advanced position, the controller performing the prewashing mode in response to an instruction of human body washing, performing the human body washing mode after the prewashing mode, and irradiating ultraviolet rays to the water flowing in the flow channel by the ultraviolet irradiation part when the prewashing mode is performed.