Sanitary washing device

Patent metadata

Field	Value
Publication number	US-10501922-B2
Application number	US-201715708691-A
Country	US
Kind code	B2
Filing date	Sep 19, 2017
Priority date	Mar 27, 2015
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

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.

First claim

What is claimed is:

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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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.

Assignees

• Toto Ltd

Inventors

• Yaoka Toshinari
• Murase Yoichi
• Amemori Hiroaki

Classifications

• E03D9/08 Primary

  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} · CPC title

• C02F1/325

  Irradiation devices or lamp constructions · CPC title

• B05B12/122

  responsive to presence or shape of target (B05B12/124 takes precedence) · CPC title

• B05B12/008

  integrated in or attached to a discharge apparatus, e.g. a spray gun · CPC title

• C02F2307/06

  Mounted on or being part of a faucet, shower handle or showerhead · CPC title