JP2012021378A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device capable of performing bidet washing by a water force appropriate to the size of a water arrival area in the bidet washing.SOLUTION: The sanitary washing device includes a nozzle, which has a water discharge hole, for squirting washing water from the water discharge hole at a female private part. The sanitary washing device, using the nozzle, switches to perform a first water discharge, for squirting the washing water from the water discharge hole at a first area of the female private part, and a second water discharge for squirting the washing water from the water discharge hole so as to evenly reach a second area of the female private part which is wider than the first area. And, the sanitary washing device includes a water force control means for squirting the washing water to suppress the water force of the first water discharge on the first area when switching from the second water discharge to the first water discharge.

Description

  Aspects of the present invention generally relate to a sanitary washing apparatus, and more particularly to a sanitary washing apparatus that uses water to wash a woman's local area of a user sitting on a Western-style sitting toilet.

  In bidet cleaning, there is a human body cleaning device that can change wide cleaning with a wide cleaning area and spot cleaning with a narrow cleaning area by a button operation (Patent Document 1). According to the human body cleaning apparatus described in Patent Document 1, for example, as a water discharge mode, it is possible to take a mode of cleaning with a small cleaning flow and a wide cleaning area without reducing the cleaning power. However, the human body cleaning apparatus described in Patent Document 1 may discharge a wide range by moving the nozzle. In this case, the user may feel uncomfortable when cleaning the bidet. Therefore, there is room for improvement in this respect.

  Further, there is a human body cleaning device that applies a turning force around the axis of the water discharge hole to the supplied wash water, guides the wash water to the water discharge hole, and discharges the wash water from the water discharge hole with the turning force. (Patent Document 2). The human body cleaning apparatus described in Patent Document 2 can swirl and discharge cleaning water without moving the nozzle, and can expand the cleaning range to a two-dimensional shape determined by swirling. However, when swirling water is discharged, a hollow portion inside the swirling water, that is, a hollow portion is generated at the time of landing, so there is room for improvement in the cleaning performance at the hollow portion. That is, for example, during menstruation, menstrual blood stains adhere to a wide area around the female local area, and therefore further improvement is required to meet the desire to clean a wide area at once. .

  Also, a human body local cleaning device that changes the discharge condition of the cleaning water discharged from the nozzle in order to appropriately change the water flow, the width of the cleaning range, its shape, etc. according to the physical properties of excrement discharged from the user (Patent Document 3). According to the human body local cleaning device described in Patent Document 3, a reliable and high cleaning ability can be exhibited regardless of the type and state of excrement without performing complicated and troublesome operations and adjustments. However, the human body local cleaning apparatus described in Patent Document 3 obtains a strong water force by increasing the flow rate and reducing the air mixing rate in the “sticky mode” in the “sticky mode” in the cage cleaning. In addition, in the “sticky mode”, things that do not spread easily in the vicinity of the entrance of the vagina are easily spread in the “smooth mode”. Therefore, in the latter, the washing range is expanded more than the former. For this reason, there is a strong water force in the center of the cleaning range, and there is a possibility that a strong stimulus is applied to the delicate area of the woman more than necessary. Therefore, there remains a problem as a cleaning feeling required for bidet cleaning in which a wide range is desired to be cleaned at once. Also, if the cleaning area is simply widened or narrowed, when the cleaning area is switched, the stimulation when washing a narrow area is too strong compared to when washing a wide area, and the user feels uncomfortable. .

JP 2000-282545 A JP 2001-90155 A Japanese Patent Application Laid-Open No. 2001-279979

  The present invention has been made based on recognition of such a problem, and provides a sanitary washing apparatus capable of performing bidet washing with a landing force suitable for widening and narrowing of the landing range of washing water in bidet washing. Objective.

  1st invention is equipped with the nozzle which has a water discharge hole, and sprays washing water from the said water discharge hole, and makes it land on a female local part, and the said nozzle lands in the 1st range of the said female local part A first water discharge for ejecting the washing water from the water discharge hole, and a second water for discharging the washing water from the water discharge hole so as to uniformly land in a second range wider than the first range. When the water discharge is switched and executed, and the second water discharge is switched to the first water discharge, the washing water is used so that the landing force in the first range of the first water discharge is suppressed. This is a sanitary washing device characterized by comprising means for suppressing the landing force to be ejected.

  According to this sanitary washing device, the first water discharge that ejects the wash water from the water discharge hole of the nozzle so as to land on the first range of the female local area, and the second range wider than the first range It is possible to switch between and execute the second water discharge that ejects the washing water from the water discharge holes of the nozzles so that the water is evenly distributed. That is, the user can switch between a first water discharge that quickly cleans a narrower range at a time and a second water discharge that focuses on a wider range according to preference. Then, when switching from the second water discharge for cleaning a wide area to the first water discharge for cleaning a narrow area by the water landing force suppression means, the water landing power at the female local area of the first water discharge is suppressed. Spout water.

According to the 2nd water discharge, a wash water can be made to land in the wider range of the female local part of the user who sat on the toilet seat. Therefore, a desired wide range can be quickly cleaned. On the other hand, according to the 1st water discharge, while being able to wash | clean a range narrower than the case of the 2nd water discharge, it is added that a strong irritation | stimulation is added more than necessary to the delicate area of the woman located near the center of a female local part. Can be suppressed. Therefore, a bidet cleaning with a very comfortable cleaning feeling can be realized.
And when switching to the 1st water discharge which wash | cleans a narrow range in the middle of execution of the 2nd water discharge which wash | cleans a wide range, the water landing force in the female local part of the 1st water discharge is suppressed by the water landing force suppression means. In this way, since the washing water is ejected, even if the washing water concentrates in the narrower range than the second water discharge in the first water discharge, no stronger stimulation is felt than necessary.

  According to this, the washing water sprayed from the nozzle by switching the range of the landing area of the washing water according to the application of the bidet washing so as to have a landing force suitable for the widening and narrowing of the landing area to the female local area Erupted. Moreover, even if it switches so that a wide landing range may be narrowed especially, it will not become the irritation | stimulation stronger than necessary. Therefore, comfortable bidet washing can be executed with a landing force suitable for widening and narrowing the landing range of the washing water in bidet washing.

  According to a second aspect of the present invention, in the first aspect of the present invention, the water landing force suppressing means causes the wash water to be ejected at a flow rate smaller than that of the second water discharge in the first water discharge. It is a cleaning device.

  According to this sanitary washing device, the first water discharge spouts the wash water so as to land on the female local area at a smaller flow rate than the second water discharge. Therefore, the 1st water discharge can be washed comfortably, suppressing that a strong stimulus is added more than necessary to the delicate area of the woman located near the center of a woman's local part. On the other hand, the second water discharge reaches the female local area at a flow rate higher than that of the first water discharge. Therefore, the cleaning power of the second water discharge is larger than the cleaning power of the first water discharge. Therefore, it is possible to efficiently wash away menstrual blood stains attached to a wide area around the female local area.

  According to a third aspect of the present invention, in the second aspect of the present invention, the water landing force suppressing means causes the wash water to be ejected at a flow velocity smaller than that of the second water discharge in the first water discharge. It is a cleaning device.

  According to this sanitary washing device, the first water discharge reaches the female local area at a lower flow rate than the second water discharge. Therefore, the 1st water discharge can be washed comfortably, controlling more strongly that a strong stimulus is added more than necessary to the delicate area of a woman located near the center of a woman's local part. On the other hand, the second water discharge reaches the female local area at a faster flow rate than the first water discharge. Therefore, the 2nd water discharge can wash the peripheral part of a woman local part with a bigger washing power. Therefore, it is possible to efficiently wash away menstrual blood stains attached to a wide area around the female local area.

  In addition, in a fourth aspect based on the second aspect, the amount of air mixed into the wash water in the first water discharge is greater than the amount of air mixed into the wash water in the second water discharge. This is a sanitary washing device characterized by.

  According to this sanitary washing device, the first discharged water reaches the female local area in a state where the amount of air mixed is larger than that of the second discharged water. Therefore, the 1st water discharge which mainly wash | cleans a narrower range can give a feeling of washing softer than the 2nd water discharge which wash | cleans a wider range at once. Thereby, in 1st water discharge, it can suppress more strongly that the strong irritation | stimulation is added to the delicate area of the woman located near the center of a female local part, and can implement the bidet washing of a more comfortable washing feeling. it can. Moreover, since the apparent volume of the washing water is increased by mixing air into the washing water, even if the flow rate of the washing water is reduced in the first water discharge, it is possible to suppress a decrease in feeling of volume.

  In addition, a fifth aspect of the present invention further includes a pressure modulation device that imparts pulsation to the flow of the cleaning water in the second aspect of the present invention, and in the first water discharge, the pressure modulation device is operated and the water discharge A pulsation is imparted to the flow of cleaning water ejected from the hole to continuously change the flow rate of the cleaning water. In the second water discharge, the water is discharged from the water discharge hole without operating the pressure modulator. This is a sanitary washing device characterized by ejecting water.

  According to this sanitary washing device, since the flow rate of the wash water is continuously changed in the first water discharge, a catch-up phenomenon of the wash water due to the difference in flow rate occurs after the wash water is jetted, and the jetted wash water The cross-sectional area can be increased intermittently. Therefore, even if the flow rate of the cleaning water is reduced in the first water discharge, it is possible to suppress a decrease in the feeling of volume.

  In a sixth aspect based on the first aspect, the first water discharge and the second water discharge cause the washing water to be granulated and ejected from the water discharge hole. In this water discharge, the cleaning water is granulated so that the particle size is smaller than the particle size in the second water discharge.

  According to this sanitary washing device, since the particle size of the granulated wash water is smaller in the first water discharge than in the second water discharge, the feeling of irritation at the time of landing of the first water discharge is weakened. Is possible.

  ADVANTAGE OF THE INVENTION According to the aspect of this invention, the sanitary washing apparatus which can perform bidet washing | cleaning with the water landing force suitable for the width of the washing water landing range in bidet washing | cleaning is provided.

It is a perspective schematic diagram showing the toilet apparatus provided with the sanitary washing apparatus concerning embodiment of this invention. It is a block diagram showing the principal part structure of the sanitary washing apparatus concerning this embodiment. It is a cross-sectional schematic diagram for demonstrating wide water discharge. It is a cross-sectional schematic diagram for demonstrating spot water discharge. It is a graph showing the landing power of washing water at a position away from the water landing part or the water discharge hole by a predetermined distance. It is a graph showing the flow velocity of washing water at a position away from the water landing part or the water discharge hole by a predetermined distance. It is a graph showing the flow volume of the washing water per unit area in the position away from the water landing part or the water discharge hole by a predetermined distance. It is a perspective schematic diagram which illustrates the specific example of the nozzle of this embodiment. It is the upper surface schematic diagram which looked at the nozzle of this example from the upper direction. It is a cross-sectional schematic diagram in cut surface AA represented to FIG. It is a cross-sectional schematic diagram which illustrates the specific example of the pressure modulation apparatus of this embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a schematic perspective view showing a toilet apparatus provided with a sanitary washing device according to an embodiment of the present invention.

  The toilet device shown in FIG. 1 includes a Western-style seat toilet (hereinafter simply referred to as “toilet” for convenience of explanation) 800 and a sanitary washing device 100 provided thereon. The sanitary washing device 100 includes a casing 400, a toilet seat 200, and a toilet lid 300. The toilet seat 200 and the toilet lid 300 are pivotally supported with respect to the casing 400 so as to be freely opened and closed.

  The casing 400 incorporates a local cleaning function unit that realizes cleaning of the female local part of the user sitting on the toilet seat 200. Further, for example, the casing 400 is provided with a seating detection sensor 404 that detects that the user has sat on the toilet seat 200. When the seating detection sensor 404 detects a user sitting on the toilet seat 200, when the user operates an operation unit such as a remote controller (not shown), the nozzle 410 can be advanced into the bowl 801 of the toilet 800. . In the sanitary washing device 100 shown in FIG. 1, the nozzle 410 has entered the bowl 801.

  One or a plurality of water discharge holes 411 are provided at the tip of the nozzle 410. And the nozzle 410 can wash the female local part of the user who sat on the toilet seat 200 by ejecting water from the water discharge hole 411 provided in the front-end | tip part. For example, in the nozzle 410 illustrated in FIG. 1, one of the two water discharge holes 411 is a water discharge hole for bidet cleaning, and the other water discharge hole 411 is a water discharge hole for butt cleaning. . In the present specification, “water” includes not only cold water but also heated hot water.

FIG. 2 is a block diagram showing a main configuration of the sanitary washing device according to the present embodiment.
The sanitary washing device 100 according to this embodiment includes a flow path 10 that guides water supplied from a water supply source (not shown) such as a water supply or a water storage tank. An electromagnetic valve 440 is provided on the upstream side of the flow path 10. The electromagnetic valve 440 is an electromagnetic valve that can be opened and closed, and controls the supply of water to the heat exchanger 450 based on a command from a control unit (not shown) provided inside the casing 400.

  A heat exchanger 450 is provided on the downstream side of the electromagnetic valve 440. The heat exchanger 450 heats the supplied water to make predetermined hot water. The heat exchanger 450 may be, for example, an instantaneous heating type heat exchanger using a sheathed heater or the like, or a hot water storage type heat exchanger using a hot water storage tank.

A pressure modulation device 470 is provided on the downstream side of the heat exchanger 450. The pressure modulation device 470 can pulsate the flow of water in the flow path 10 and pulsate the water ejected from the water discharge hole 411 of the nozzle 410.
A nozzle 410 is provided on the downstream side of the pressure modulation device 470. The nozzle 410 includes a flow rate adjustment valve 480 that adjusts the water flow (flow rate), a wide water discharge channel 427 that flows when wide water discharge, and a spot water discharge channel 428 that flows when spot water discharge. And a nozzle body 420. The flow rate adjustment valve 480 can adjust the water flow, and can open, close, and switch water supply to the nozzle 410. More specifically, the sanitary washing device 100 according to this embodiment is a spot water discharge (first water discharge) that discharges wash water from the water discharge hole 411 of the nozzle 410 so as to land on the first range of the female local area. ) And wide water discharge (second water discharge) for spraying the wash water from the water discharge holes 411 of the nozzle 410 so as to uniformly land in the second range wider than the first range. it can.

  The flow rate adjusting valve 480 can pass water to the wide water discharge flow path 427 or flow to the wide water discharge flow path 427 based on a command from a control unit (not shown) by a switch operation of the remote controller. Alternatively, the flow rate adjustment valve 480 can pass water to the wide water discharge channel 427 and the spot water discharge channel 428 at a predetermined ratio. As a result, the user switches between the wide water discharge channel 427 and the spot water discharge channel 428 or the flow rate of the cleaning water passing through the wide water discharge channel 427 and the spot water discharge channel 428. By appropriately changing the ratio of the flow rate of the washing water that passes through, you can switch between wide water discharge that quickly cleans a wider area at once and spot water discharge that focuses on a narrower area according to your preference. be able to. This will be described in detail later.

  The nozzle 410 receives a driving force from a motor or the like, for example, and can advance or retreat into the bowl 801 of the toilet bowl 800. And the nozzle 410 can wash the female local part of the user who sat on the toilet seat 200 by ejecting water from the water discharge hole 411 in the state which advanced into the bowl 801.

Next, the structure of the nozzle 410 of this embodiment, and the water discharge form of wide water discharge and spot water discharge are demonstrated, referring drawings.
FIG. 3 is a schematic cross-sectional view for explaining wide water discharge.

  The nozzle 410 of this embodiment includes a nozzle body 420 and a throat 430. Inside the nozzle body 420, a wide water discharge channel 427 through which wash water supplied from a water source (not shown) passes, a swirl chamber 423 capable of generating swirl flow, and wash water from the swirl chamber 423 to the throat 430. And a communication path 425 for guiding. In addition, a projecting portion 424 that generates a swirling flow with a more stable swirl force is provided at the center of the swirl chamber 423.

  The swirl chamber 423 is formed by a large-diameter inner peripheral wall 423e having a larger diameter at the bottom and an inclined inner peripheral wall 423f having a diameter contracted toward the communication path 425, and is a hollow chamber. The inclined inner peripheral wall 423f is connected to the communication path 425 at one end thereof. On the other hand, the wide water discharge channel 427 is eccentrically connected to the swirl chamber 423. More specifically, the wide water discharge channel 427 is connected in the tangential direction of the large-diameter inner peripheral wall 423e of the swirl chamber 423.

  Inside the throat 430, a throat flow path 431 through which the washing water ejected from the communication passage 425 of the nozzle body 420 passes is provided. Further, at one end of the throat channel 431, a water discharge hole 433 for discharging the cleaning water that has passed through the throat channel 431 to the outside of the throat 430 is formed. That is, when the nozzle 410 has the throat 430 like the nozzle 410 shown in FIG. 3, the water discharge hole 433 provided in the throat 430 functions as the water discharge hole 411 shown in FIG. In the throat flow path 431 in the vicinity of the water discharge hole 433, a taper portion 432 is formed in which the flow path expands toward the water discharge hole 433.

  In the nozzle 410 of the present embodiment, a gap is provided between the nozzle body 420 and the throat 430, but this gap is not necessarily provided. That is, the nozzle body 420 and the throat 430 may be integrally formed, and the communication path 425 and the throat flow path 431 may be connected.

  When the wide water discharge is performed, the wash water supplied from a water source (not shown) passes through the wide water discharge channel 427 and is supplied to the nozzle 410 and flows into the swirl chamber 423. Here, since the wide water discharge channel 427 is connected to the tangential direction of the inner peripheral wall 423e of the large-diameter portion of the swirl chamber 423, the wash water flowing into the swirl chamber 423 is as indicated by an arrow A3 shown in FIG. Rotating at a speed faster than spot water discharge, which will be described later, along the large-diameter portion inner peripheral wall 423e and the inclined inner peripheral wall 423f. Then, the wash water swirled in the swirl chamber 423 passes through the communication passage 425 while maintaining swirl force, and is jetted into the throat flow path 431 of the throat 430. At this time, since the washing water ejected from the nozzle body 420 maintains the turning force, it is ejected in a hollow conical shape as a liquid film having a hollow portion at the center. Hereinafter, for convenience of explanation, the washing water ejected in the hollow conical shape is referred to as “hollow conical water discharge”.

  The wash water that has flowed into the throat flow path 431 flows along the inner wall of the throat flow path 431 while maintaining the turning force, and is guided to the water discharge hole 433. That is, the washing water passing through the throat flow path 431 flows so as to adhere to the inner wall of the throat flow path 431. Therefore, the wash water flowing through the throat flow path 431 receives resistance due to frictional force from the inner wall of the throat flow path 431, and the flow rate of the wash water becomes smaller toward the water discharge hole 433. As a result, as shown in FIG. 3, the thickness of the liquid film in the vicinity of the water discharge hole 433 is the thickness of the liquid film when ejected from the nozzle body 420 or the liquid immediately after flowing into the throat channel 431. Thicker than the film thickness.

  Further, the flow rate of the washing water flowing through the throat flow path 431 is faster in the center of the throat flow path 431 than in the vicinity of the inner wall of the throat flow path 431, that is, the boundary layer. Therefore, a vortex is generated in the direction of crossing the liquid film as indicated by an arrow A1 in FIG. 3 in the wash water flowing through the throat flow path 431. In addition, the throat flow path 431 in the vicinity of the water discharge hole 433 is formed with a tapered portion 432 whose flow path expands toward the water discharge hole 433, so that the cleaning water ejected from the water discharge hole 433 is tapered. Flowing along. Therefore, eddy currents are more likely to occur in the direction crossing the liquid film in the wash water ejected from the water discharge hole 433.

  Then, the washing water ejected from the water discharge hole 433 is ejected as a liquid film having a hollow portion at the center, that is, as the hollow conical water discharge 510, but the water flow granulated at a position somewhat away from the water discharge hole 433. (Hereinafter referred to as “granulated water flow” for convenience of explanation). More specifically, since the vortex flow is generated in the hollow conical water discharge 510 ejected from the water discharge hole 433 in a direction crossing the liquid film, it is adjacent to the water discharge hole 433 at a certain distance. Cracks occur between the vortex flows. Then, the hollow conical water discharge 510 ejected from the water discharge hole 433 is crushed at a position somewhat away from the water discharge hole 433 as shown in FIG. Thus, the hollow conical water discharge 510 ejected from the water discharge hole 433 transitions to the granulated water flow 520. And the granulated water flow 520 spreads evenly inside the area where the hollow conical water discharge 510 diffuses.

  Further, the pressure of the hollow portion of the hollow conical water discharge 510 is smaller than the pressure outside the hollow conical water discharge 510. This is because air does not easily enter the hollow portion of the hollow conical water discharge 510 from the outside, and the air in the hollow portion is drawn out by the flow of the hollow conical water discharge 510. Thus, when the pressure of the hollow part of the hollow conical water discharge 510 is smaller than the pressure outside the hollow conical water discharge 510, the hollow conical water discharge 510 is prevented from expanding the water discharge diameter (cone diameter). The

  Therefore, according to the nozzle 410 of the present embodiment, it is possible to prevent the granulated water flow 520 from landing on the outside of the washing area, and a portion outside the desired washing area (for example, the thigh) is unnecessary. Wetting can be suppressed. Thereby, it can suppress that the user sitting on the toilet seat 200 senses discomfort by the part outside a desired washing area getting wet unnecessarily.

  Furthermore, the diameter of the granulated water stream 520 is about 1 mm, for example, and is larger than that of a mist having a diameter of about 10 to 100 μm, for example. This is because, as described above, the flow rate of the cleaning water flowing through the throat flow path 431 becomes smaller toward the water discharge hole 433, and the thickness of the liquid film near the water discharge hole 433 becomes thicker. That is, in order to forcibly granulate the hollow conical water discharge 510 ejected with a thicker liquid film by the vortex generated inside the throat 430, the diameter of the granulated water stream 520 is such as fog. Big in comparison.

  According to this, the granulated water flow 520 is less likely to drift in the air, and is less likely to scatter outside the desired cleaning area. That is, according to the nozzle 410 of the present embodiment, the granulated water flow 520 can be prevented from landing outside the cleaning area, and the portion outside the desired cleaning area can be prevented from being unnecessarily wetted. it can. Moreover, since the diameter of the granulated water flow 520 is larger, it is possible to further increase the landing force in the landing portion. Therefore, for example, menstrual blood stains during menstruation can be dropped or floated in a shorter time, and can be washed out in a shorter time.

  In addition, as described above with respect to the pressure of the hollow portion of the hollow conical water discharge 510 being smaller than the pressure outside the hollow conical water discharge 510, the pressure of the hollow portion of the hollow conical water discharge 510 is the same as that of the hollow conical water discharge 510. The pressure in the hollow portion of the hollow conical water discharge 510 when not crushed is larger. This is because, as indicated by an arrow A2 in FIG. 3, the air outside the hollow portion of the hollow conical water discharge 510 is cracked between adjacent vortex flows or between the crushed hollow conical water discharge 510. It is for entering into a hollow part from. According to this, it is possible to suppress the possibility that a sufficiently wide cleaning range cannot be secured due to the pressure in the hollow portion of the hollow conical water discharge 510 becoming too small. Moreover, since the pressure of the hollow part of the hollow conical water discharge 510 is larger than the pressure of the hollow part of the hollow conical water discharge 510 when the hollow conical water discharge 510 is not crushed, it is possible to suppress the occurrence of liquid film waves. it can.

  Thus, according to the wide water discharge of the present embodiment, the toilet seat 200 is in a state where the granulated water flow 520 is uniformly distributed in the hollow portion of the hollow conical water discharge 510 (inside the region where the wash water 500 is diffused). The washing water can be landed on a wider range of female localities of the user sitting on the floor. Therefore, a desired wide range can be quickly cleaned.

FIG. 4 is a schematic cross-sectional view for explaining spot water discharge.
Inside the nozzle body 420, similarly to the wide water discharge channel 427, a spot water discharge channel 428 through which wash water supplied from a water source (not shown) passes is provided. The spot water discharge channel 428 is connected to the large-diameter inner peripheral wall 423e of the swirl chamber 423 so as to go to the axial center of the swirl chamber 423.

  When spot water discharge is executed, wash water supplied from a water source (not shown) is supplied to the nozzle 410 through the spot water discharge channel 428 and flows into the swirl chamber 423. Here, since the spot water discharge channel 428 is connected to the large-diameter inner peripheral wall 423e of the swirl chamber 423 so as to go to the axial center of the swirl chamber 423, the wash water flowing into the swirl chamber 423 is shown in FIG. As shown by the arrow A4, the flow flows to the communication path 425 without turning or with reduced turning force. Then, the washing water that has flowed into the communication path 425 without turning or with reduced turning force passes through the communication path 425 and is jetted into the throat flow path 431 of the throat 430. At this time, the washing water ejected from the nozzle body 420 does not have a turning force or has a reduced turning force, and is thus ejected as a straight flow 530.

  A part of the straight flow 530 ejected from the nozzle body 420 is separated from the straight flow 530 into droplets 540. The droplet 540 separated from the straight flow 530 is reflected on the inner wall of the throat channel 431 as indicated by an arrow A5 shown in FIG. Then, a part of the droplet 540 reflected on the inner wall of the throat flow channel 431 joins the straight flow 530 again. As a result, a gas-liquid interface is generated between the straight flow 530 and the surrounding air. Then, the wash water ejected from the nozzle body 420 is ejected from the water discharge hole 433 in a state where the straight flow 530 and the droplet 540 are mixed. That is, the cleaning water ejected from the nozzle body 420 is ejected in a water granular form.

  The wash water ejected from the water discharge hole 433 at the time of spot water discharge does not diffuse like the wash water discharged from the water discharge hole 433 at the time of wide water discharge, and is not ejected as the hollow conical water discharge 510. . That is, the wash water ejected from the water discharge hole 433 at the time of spot water discharge is not in a hollow state but in a solid state or a filled state.

  Thus, according to the spot water discharge of this embodiment, the range narrower than the case of wide water discharge can be wash | cleaned. That is, the spot water discharge landing range (first range) is narrower than the wide water discharge landing range (second range). In other words, the wide water discharge landing range (second range) is wider than the spot water discharge landing range (first range). The user can focus on the portion to be cleaned according to his / her preference.

  Therefore, according to the present embodiment, the user appropriately sets and changes the ratio between the flow rate of the wash water that passes through the wide water discharge channel 427 and the flow rate of the wash water that passes through the spot water discharge channel 428. Thus, it is possible to switch between wide water discharge for cleaning a wider range at once and spot water discharge for cleaning a narrower range according to preference.

  Further, when spot water is discharged, the throat flow path 431 is almost filled with the straight flow 530 and the droplet 540. Therefore, as described above, the wash water ejected from the water discharge hole 433 at the time of spot water discharge is in a solid state or a filled state. On the other hand, the wash water ejected from the water discharge hole 433 during the wide water discharge is a liquid film having a hollow portion at the center, that is, a hollow conical water discharge 510 as described above with reference to FIG. Thereby, the flow rate of the wash water that reaches the female local area during spot water discharge is smaller than the flow rate of the wash water that reaches the female local area during wide water discharge.

  Therefore, according to the spot water discharge of the present embodiment, it is possible to wash a narrower range than in the case of wide water discharge, and that a strong stimulation is added to the delicate area of the woman located near the center of the female local area more than necessary. Can be suppressed. Therefore, a bidet cleaning with a very comfortable cleaning feeling can be realized.

  3 and FIG. 4, when a gap is provided between the nozzle body 420 and the throat 430, air can be taken into the throat channel 431 through the gap. it can. According to this, it is possible to more easily form a water discharge form of spot water discharge that focuses on a narrower range. Furthermore, more air can be mixed into the washing water ejected from the water discharge hole 433 during spot water discharge. Therefore, spot water discharge can give a feeling of washing softer than wide water discharge. Moreover, since the apparent volume of the washing water is increased by mixing air into the washing water, even if the flow rate of the washing water is reduced in spot water discharge, it is possible to suppress a decrease in the feeling of volume.

  In the present embodiment, the amount of air mixed in the cleaning water ejected from the water discharge hole 433 can be increased in the spot water discharge than in the wide water discharge. Also by this, spot water discharge can give a feeling of washing softer than wide water discharge. For this reason, in spot water discharge, it is possible to further suppress the unnecessary stimulation from being applied to the delicate area of the woman located near the center of the female local area more than necessary, and to realize a bidet cleaning with a more comfortable cleaning feeling.

  The nozzle 410 is provided with a decelerating means for decelerating the wash water sprayed from the spray hole of the swirl chamber 423 between the swirl chamber 423 and the water discharge hole 411. From the deceleration amount of the wash water in the wide water discharge Also, decelerate so that the decelerating amount of the washing water in the spot water discharge becomes larger.

  By differentiating the speed of the swirling flow in the swirl chamber 423 between the wide water discharge and the spot water discharge, a speed difference is added to the swirl flow so as to vary the water discharge form. Furthermore, by providing a speed reduction means between the spray hole of the swirl chamber 423 and the water discharge hole 411 so as to reduce the speed of the wash water in the spot water discharge larger than that in the wide water discharge. The water discharge flow rate due to spot water discharge is actively decelerated.

  Specifically, the cleaning water sprayed from the swirl chamber 423 is decelerated by temporarily storing the wash water closer to the water discharge hole 411 than the spray hole of the swirl chamber 423. By temporarily storing the wash water so that the wash water stored in the spot water discharge becomes larger than the wash water stored in the wide water discharge, the wash water is jetted from the swirl chamber 423. The amount of pressure loss in spot water discharge due to the entry of wash water becomes larger than the amount of pressure loss in wide water discharge, and the amount of wash water deceleration in spot water discharge is greater than the amount of wash water deceleration in wide water discharge. It decelerates to become larger.

  Therefore, the flow rate in spot water discharge can be reduced by a simple method of using the wash water sprayed from the swirl chamber 423 and decelerating using the pressure loss of the stored wash water.

  This speed reduction means has a throat flow path 431 having a larger inner diameter than the injection hole of the swirl chamber 423 on the side of the water discharge hole 411 with respect to the spray hole of the swirl chamber 423. In the spot water discharge, a water flow whose outer periphery is granulated is discharged from the injection hole of the swirl chamber 423, and in the wide water discharge, a water flow whose outer periphery is turned into a liquid film is discharged from the discharge hole of the swirl chamber 423.

  In the wide water discharge, a water flow whose outer periphery is formed into a liquid film is discharged from the injection hole of the swirl chamber 423, and is discharged from the water discharge hole 411 while being formed into a liquid film along the throat flow path 431. On the other hand, in spot water discharge, a water flow whose outer periphery is granulated is ejected from the injection hole of the swirl chamber 423, and the granulated water flow collides with the throat flow path 431 and is decelerated. Accordingly, the throat flow path 431 having a diameter larger than that of the injection hole of the swirl chamber 423 is provided downstream of the swirl chamber 423, and the washing water is washed more in the spot water discharge than in the wide water discharge just by changing the form of the water flow injected from the injection hole. It is possible to reliably decelerate and discharge water.

  In the nozzle 410, air is entrained on the side of the water discharge hole 411 with respect to the spray hole of the swirl chamber 423, and air is naturally mixed into the cleaning water due to the ejector effect. In this way, air is mixed into the wash water, and the pressure loss amount due to mixing this air is decelerated because the pressure loss amount in the spot water discharge becomes larger than the pressure loss amount in the wide water discharge.

  In this way, by making the air mixing amount in the spot water discharge larger than the air mixing amount in the wide water discharge, the pressure loss amount in the spot water discharge is made larger than the pressure loss amount in the wide water discharge, As a result, the decelerating speed is reduced so that the decelerating amount of the cleaning water in the spot water discharge becomes larger. Therefore, the water discharge flow velocity in the spot water discharge is reduced by a simple method of using the wash water injected from the injection hole of the swirl chamber 423 and decelerating using the pressure loss of the wash water due to air mixing using the ejector effect. be able to.

  Further, the nozzle 410 has an air mixing portion between the injection hole of the swirl chamber 423 and the throat flow path 431. Specifically, a gap is provided between the nozzle body 420 and the throat 430 to serve as an aeration unit. Then, in spot water discharge, a water flow whose outer periphery is granulated is ejected from the injection hole of the swirl chamber 423 so as to exhibit the ejector effect, and in the wide water discharge, the outer periphery is liquid from the injection hole of the swirl chamber 423 so as not to exhibit the ejector effect. Discharges the filmed water stream.

Thus, since the throat flow path 431 and the air mixing portion having an inner diameter larger than the injection hole of the swirl chamber 423 are provided closer to the water discharge hole 411 than the injection hole of the swirl chamber 423, The amount of bubbles mixed in the jetted cleaning water can be influenced by the mode of the jetted cleaning water. In the wide water discharge, a water flow whose outer periphery is formed into a liquid film is discharged from the injection hole of the swirl chamber 423, and thus proceeds while being formed into a liquid film along the throat flow path 431 with almost no air being sucked in from the aeration unit. The water can be discharged from the water discharge hole 411 as it is. On the other hand, in the spot water discharge, since the water flow whose outer periphery is granulated is discharged from the injection hole of the swirl chamber 423, the granulated water flow collides with the throat flow path 431 and is decelerated. Further, air is sucked in from the air mixing part, and air is mixed by the ejector effect. Therefore, the throat flow path 431 having a larger diameter than the injection hole of the swirl chamber 423 and the air mixing portion are provided downstream of the swirl chamber 423, and the structure of the water flow ejected from the spray hole 411 is changed to have the same structure. The washing water can be surely decelerated and ejected in the spot water discharge rather than the wide water discharge.
In addition, when air is mixed into the cleaning water, the air mixing amount may be controlled using an air pump instead of naturally mixing air as described above.

Next, the landing power of washing water in wide water discharge and spot water discharge will be described in more detail with reference to the drawings.
FIG. 5 is a graph showing the landing force of the cleaning water at a position away from the landing portion or the water discharge hole by a predetermined distance.

  As shown in FIG. 5, in this embodiment, the landing range of the wide water discharge is wider than the landing range of the spot water discharge. In other words, the spot water landing range is narrower than the wide water landing range. In the example shown in FIG. 5, the landing force at the center of the spot water landing range is equal to or smaller than the water landing force of the wide water discharge range. The water landing force of the spot water discharge may be equal to the water landing force of the spot water, or the water landing force of the wide water discharge may be made larger.

  Here, in the specification of the present application, the “landing force” means at least one of the landing flow rate, the landing water amount, and the landing pressure of the cleaning water 500, and the momentum of the cleaning water per unit area. Yes, it refers to the power to clean, peel off and float. Further, the “water arrival flow velocity” refers to the flow velocity of the cleaning water 500 at a position away from the water arrival portion or the water discharge hole 411 by a predetermined distance. Further, the “water landing pressure” is a momentum per unit area at a position away from the water landing portion or the water discharge hole 411 by a predetermined distance, and refers to a force that removes, peels off, or floats. Further, the “amount of water landing” is the amount of water landing per unit time at a position away from the water landing portion or the water discharge hole 411 by a predetermined distance, and refers to the power to wash away dirt.

  When spot water discharge is performed at the same flow rate and flow velocity as wide water discharge, spot water discharge causes the same amount of wash water to land in a narrower range than wide water discharge. As shown in FIG. 5, the landing force 501s-1 is larger than the landing force of wide water discharge. In this case, when the spot water is discharged, the stimulation given to the delicate area in the female local area is too strong, which makes the user feel uncomfortable. Therefore, in this embodiment, when starting spot water discharge, or when switching from wide water discharge to spot water discharge, the flow rate of cleaning water is reduced or the flow rate is reduced, or the amount of air mixed In order to suppress the water landing force during spot water discharge. That is, the water landing force suppressing means is means for adjusting the flow rate, flow rate, air mixing amount, and the like of spot water discharge and wide water discharge. Then, the washing water is jetted out in such a manner as to suppress the landing force at the time of spot water discharge, and the landing force 501s of the spot water discharge is reduced as shown in FIG. The landing force at the center of the water range is made equal to or smaller than the landing force of the wide water discharge landing range. As a result, it is possible to prevent a strong stimulus from being applied to the delicate area located near the center of the female local area more than necessary during spot water discharge, and to realize a comfortable bidet cleaning.

  The water landing force at the center of the spot water discharge range is made smaller than when the wash water is injected into the spot water discharge range at the same flow rate and flow velocity as the wide water discharge. In addition, if the water landing force is equal to or smaller than the landing force of the wide water discharge range, spot water discharge will ensure that a strong stimulation is applied to the delicate area of women located near the center of the female local area more than necessary. It is possible to clean comfortably while suppressing. In other words, spot water discharge can realize a bidet cleaning with a very comfortable cleaning feeling without causing discomfort to the delicate area of the woman located near the center of the female local area.

  On the other hand, in the wide water discharge, the washing water is landed in a wider area of the female part of the user sitting on the toilet seat 200 in a state where the granulated water flow 520 is uniformly distributed in the hollow portion of the hollow conical water discharge 510. be able to. Therefore, wide water discharge can quickly wash a desired wide range at a time.

  According to this, the washing water ejected from the nozzle 410 by switching the washing water landing range according to the application of the bidet washing becomes a landing force suitable for the widening and narrowing of the landing area to the female local area. Land on the water. Therefore, bidet cleaning can be performed with a landing force suitable for widening and narrowing the landing range of cleaning water in bidet cleaning.

  It should be noted that the distribution of the landing force in the landing portion at the time of wide water discharge is not limited to being substantially the same over the entire landing range as indicated by the solid landing force 501w shown in FIG. Absent. The distribution of the landing force at the landing portion at the time of wide water discharge may be larger at the outer peripheral portion than at the central portion of the landing range, as indicated by the broken landing force 503w shown in FIG. Alternatively, the distribution of the landing force at the landing portion in the case of wide water discharge may be smaller at the outer peripheral portion than at the center portion of the landing range as indicated by the alternate long and short dash landing force 505w shown in FIG.

  Further, the distribution of the landing force at the landing portion at the time of spot water discharge is not limited to being substantially the same over the entire landing range as indicated by the solid landing force 501s shown in FIG. Absent. The distribution of the landing force at the landing portion at the time of spot water discharge may be larger at the outer peripheral portion than at the central portion of the landing range, as indicated by the broken landing force 503s shown in FIG. Alternatively, the distribution of the landing force at the landing portion at the time of spot water discharge may be smaller at the outer peripheral portion than at the center portion of the landing range, as shown by the alternate long and short dash landing force 505s shown in FIG.

  Spot water landing range regardless of whether the water landing force distribution in the water landing portion during wide water discharge or spot water discharge is the water landing force 501w, 503w, 505w or the water landing force 501s, 503s, 505s shown in FIG. It is preferable that the water landing force at the center of the water is equal to or smaller than the water landing force in the landing range of the wide water discharge.

  When the distribution of the landing force at the landing portion at the time of wide water discharge is larger at the outer peripheral portion than the center portion of the landing range, as shown by the dotted landing force 503w shown in FIG. In some cases, menstrual blood stains may adhere to a wide area around the female local area, and it is possible to meet the desire to clean the wide area at once.

  More specifically, the outer peripheral portion of the desired cleaning area is an area that is desired to be positively cleaned when menstrual blood stains are attached to the woman. Therefore, when the water landing force at the outer peripheral portion is larger than the water landing force at the central portion, the cleaning water 500 having a high cleaning power reaches the area where menstrual blood stains are desired to be removed. On the other hand, since the washing water having a small water landing force is landed on the delicate area of the woman, the feeling of irritation stronger than necessary is not added. Therefore, the sanitary washing device 100 according to the present embodiment can remove or lift menstrual stains in a shorter time, and can realize bidet washing with a very comfortable washing feeling. In addition, the sanitary washing device 100 according to this embodiment can wash out menstrual stains in a shorter time, and can realize a bidet washing with a very comfortable washing feeling. Therefore, the sanitary washing device 100 according to the present embodiment is suitable as a device used by women during menstruation. In particular, menstrual stains tend to dry out and adhere to the periphery of women's local areas, but when the outer periphery has a greater landing force than the center, the washed menstrual stain is washed away. Is preferred.

  Moreover, the sanitary washing device 100 according to the present embodiment can land at once in a wider range than the conventional bidet washing regardless of the distribution of the landing force in the landing portion. Therefore, the sanitary washing device 100 according to the present embodiment uses the nozzle 410 moved in the front-rear direction and the left-right direction (refer to the arrows shown in FIG. 1) to move the water landing position, or used while sitting on the toilet seat 200. It is not necessary for the person himself / herself to move the landing position by moving the sitting position. Therefore, the sanitary washing device 100 according to the present embodiment is less likely to give a sense of being traced when washing a female local part in a wide range. Also by this, the sanitary washing device 100 according to the present embodiment can realize bidet washing with a very comfortable washing feeling.

  In addition, the landing power of wide water discharge and spot water discharge may be in a form other than that shown in FIG. For example, even if the spot water discharge power is slightly larger than the wide water discharge power, reducing the flow rate and flow rate of the wash water during spot water discharge can suppress the water landing force and weaken the sense of irritation. Is possible. In particular, when switching to spot water discharge by remote control operation during execution of wide water discharge, there is almost no water stop time and the cleaning range is switched. For this reason, the wash water that has been diffused and sprayed over a wide area concentrates in a narrower area, so that the landing power increases and it becomes easy to feel a strong stimulus. If the flow velocity and the flow rate are reduced so as to suppress, it is possible to suppress the excessive stimulation from being applied to the delicate area of the female local area more than necessary. Also by this, the bidet cleaning with a very comfortable cleaning feeling can be realized.

Next, when the landing force at the landing portion in the case of wide water discharge is greater in the outer peripheral portion than in the center portion of the landing range, and the landing force in the landing portion at the time of spot discharge over the entire landing range Taking the case of substantially the same as an example, the flow rate of cleaning water at a position away from the water landing part or the water discharge hole by a predetermined distance and the flow rate of cleaning water per unit area will be described.
FIG. 6 is a graph showing the flow rate of the cleaning water at a position away from the water landing part or the water discharge hole by a predetermined distance.

  In the present embodiment, as shown in FIG. 6, the flow velocity at the center of the spot water landing range is equal to or smaller than the flow velocity in the wide water landing range. As described above with reference to FIG. 4, the washing water ejected from the water discharge hole 433 during the spot water discharge is in a solid state or filled, while the water discharge hole during the wide water discharge. This is because the wash water ejected from 433 is hollow conical water discharge 510.

  More specifically, in the wide water discharge, the wash water that has flowed into the throat flow path 431 flows along the inner wall of the throat flow path 431 while maintaining the turning force, so the axial direction of the throat flow path 431 (water discharge direction) The area occupied by the wash water in the water discharge hole 433 or the throat flow path 431 is smaller than that in the case of spot water discharge. On the other hand, in spot water discharge, the throat flow path 431 is almost full due to the straight flow 530 and the droplets 540, so that the cleaning water when viewed in the axial direction (water discharge direction) of the throat flow path 431 is the water discharge hole 433 The area occupying the flow path 431 is larger than that in the case of wide water discharge. Therefore, the flow velocity at the center of the spot water landing range is equal to or smaller than the flow velocity in the wide water landing range.

  According to this, spot water discharge lands on the female local area at a lower flow velocity than that when the washing water is ejected toward the landing area of the spot water discharge at the same flow rate as the wide water discharge. Therefore, the spot water discharge of this embodiment can be washed comfortably while suppressing a strong stimulus from being applied to the delicate area of the woman located near the center of the female local area more than necessary. On the other hand, wide water discharge reaches a female local area at a faster flow rate than spot water discharge. Therefore, the wide water discharge of this embodiment can wash | clean the peripheral part of a female local part with bigger detergency. Therefore, it is possible to efficiently wash away menstrual blood stains attached to a wide area around the female local area.

  Further, the flow rates of the wide water discharge and the spot water discharge differ from each other depending on the area of the cleaning water occupying the water discharge holes 433 or the throat flow path 431 when viewed in the axial direction of the throat flow path 431. Therefore, the flow velocity difference is automatically generated by switching between wide water discharge and spot water discharge. Thereby, the flow velocity can be varied between the wide water discharge and the spot water discharge without providing a large-scale device or device.

FIG. 7 is a graph showing the flow rate of cleaning water per unit area at a position away from the water landing portion or the water discharge hole by a predetermined distance.
Means for reducing the landing force in the center of the spot water landing range is not limited to changing the flow velocity described above with reference to FIG. In order to reduce the landing force at the center of the spot water landing range, the flow rate of cleaning water per unit area may be varied.

  More specifically, the flow rate adjusting valve 480 determines the flow rate of cleaning water per unit area at the center of the spot water landing range based on a command from a control unit (not shown). The flow rate of washing water per area can be reduced. Thereby, the landing force in the center of the spot water landing range can be made equal to or smaller than the water landing force in the wide water discharge range.

  According to this, spot water discharge lands on the female local area at a lower flow rate than the case where the wash water is ejected toward the spot water discharge range at the same flow rate as the wide water discharge. Therefore, the spot water discharge of this embodiment can be washed comfortably while suppressing a strong stimulus from being applied to the delicate area of the woman located near the center of the female local area more than necessary. On the other hand, the wide water discharge reaches the female local area at a flow rate larger than the spot water discharge. Therefore, the cleaning power of the wide water discharge of this embodiment is larger than the cleaning power of the spot water discharge. Therefore, it is possible to efficiently wash away menstrual blood stains attached to a wide area around the female local area.

Next, a specific example of the nozzle 410 of this embodiment will be described with reference to the drawings.
FIG. 8 is a schematic perspective view illustrating a specific example of the nozzle of this embodiment.
FIG. 9 is a schematic top view of the nozzle of this example as viewed from above.
FIG. 10 is a schematic cross-sectional view taken along the cutting plane AA shown in FIG.

  The nozzle 410 according to this specific example includes a nozzle body 420. Inside the nozzle body 420, a wide water discharge channel 427 and a spot water discharge channel 428 are provided. As shown in FIG. 9, the wide water discharge channel 427 is connected in the tangential direction of the large-diameter inner peripheral wall 423 e of the swirl chamber 423. On the other hand, as shown in FIG. 9, the spot water discharge channel 428 is connected to the large-diameter inner peripheral wall 423 e so as to go to the axial center of the swirl chamber 423. Other structures are similar to the structure of the nozzle 410 described above with reference to FIGS.

  Since the wide water discharge channel 427 is connected in the tangential direction of the large-diameter inner peripheral wall 423e of the swirl chamber 423, the wash water that has flowed into the swirl chamber 423 through the wide water discharge channel 427 is contained in the large-diameter portion. It turns along the peripheral wall 423e and the inclined inner peripheral wall 423f. This is as described above with respect to FIG. On the other hand, since the spot water discharge channel 428 is connected to the large-diameter inner peripheral wall 423e so as to be directed to the axial center of the swirl chamber 423, the wash water that has flowed into the swirl chamber 423 through the spot water discharge channel 428. Is ejected from one end of the communication path 425, that is, from the water discharge hole 426 without turning. This is as described above with reference to FIG.

  Therefore, according to the nozzle 410 of this specific example, when the cleaning water flows into the swirl chamber 423 only through the wide water discharge channel 427, the hollow conical water discharge 510 having a larger swirl force is discharged from the water discharge hole 426. can do. When the nozzle 410 according to this specific example has the throat 430 shown in FIG. 3, the hollow conical water discharge 510 ejected from the water discharge hole 433 transitions to the granulated water flow 520. Therefore, in this case, the user can quickly clean a wider area at a time.

  On the other hand, when the cleaning water is introduced into the swirl chamber 423 not only through the wide water discharge channel 427 but also through the wide water discharge channel 427 and the spot water discharge channel 428, a swirl flow generated in the swirl chamber 423. The swirl force is reduced as compared with the case where the washing water flows into the swirl chamber 423 only through the wide water discharge channel 427. This is because the swirling flow caused by the wash water flowing into the swirl chamber 423 from the wide water discharge flow path 427 interferes with the straight flow caused by the wash water flowing into the swirl chamber 423 from the spot water discharge flow path 428. Therefore, in this case, the hollow conical water discharge 510 having a smaller turning force than that in the case where the washing water is allowed to flow into the swirl chamber 423 only through the wide water discharge channel 427 is ejected from the water discharge hole 426.

  On the other hand, when the cleaning water is allowed to flow into the swirl chamber 423 only through the spot water discharge channel 428, the straight flow 530 and the droplet 540 can be discharged from the water discharge hole 426. Therefore, in this case, the user can intensively clean the portion to be cleaned as desired.

  According to this, when washing water is made to flow into the swirl chamber 423 through the wide water discharge channel 427 and the spot water discharge channel 428, and the wash water into the swirl chamber 423 only through the spot water discharge channel 428. Can be washed in a narrower range than when washing water is allowed to flow into the swirl chamber 423 only through the wide water discharge channel 427. That is, the user can intensively clean the portion to be cleaned as desired.

  Therefore, according to this example, the user appropriately changes the ratio between the flow rate of the wash water that passes through the wide water discharge channel 427 and the flow rate of the wash water that passes through the spot water discharge channel 428. Thus, it is possible to switch between wide water discharge for cleaning a wider range at once and spot water discharge for cleaning a narrower range according to preference.

Next, a specific example of the pressure modulation device 470 of the present embodiment will be described with reference to the drawings.
FIG. 11 is a schematic cross-sectional view illustrating a specific example of the pressure modulation device of this embodiment.

As described above with reference to FIG. 2, the sanitary washing device 100 according to the present embodiment pulsates the flow of water in the flow path 10 and pulsates the water ejected from the water discharge hole 411 of the nozzle 410. 470. The pressure modulation device 470 operates during spot water discharge based on a command from a control unit (not shown), and pulsates the flow of water in the flow path 10. The washing water to which the pulsation is applied is ejected in a state where there is a speed difference from the water discharge hole 411 due to a change in pressure, that is, a state where the flow rate is high and a state where the flow rate is low. The wash water having the speed difference causes a phenomenon in which the fast speed part catches up with the slow speed part after jetting, and the cross-sectional area of the wash water is intermittently increased by combining the wash water. Therefore, even if the flow rate of the cleaning water is reduced in spot water discharge, it is possible to suppress a decrease in the feeling of volume and to further increase the feeling of cleaning.
In the case of wide water discharge, the pressure modulation device 470 is not operated and the washing water is ejected without pulsation.

  The pressure modulator 470 shown in FIG. 11 can pulsate the flow of water in the flow path 10 as described above. Here, “pulsation” in the present specification refers to fluctuations in pressure caused by the pressure modulation device 470. Therefore, the pressure modulation device 470 is a device that varies the pressure of water in the flow path 10.

  As shown in FIG. 11, the pressure modulation device 470 includes a cylinder 471 connected to the flow path 10, a plunger 472 provided inside the cylinder 471 so as to freely advance and retract, and a check provided inside the plunger 472. It has a valve 473 and a pulsation generating coil 474 that moves the plunger 472 forward and backward by controlling the excitation voltage.

  When the position of the plunger 472 changes to the nozzle 410 side (downstream side), the pressure of water downstream from the pressure modulator 470 increases, and the side opposite to the nozzle 410 (upstream side). In the case of changing to, a check valve is arranged so that the pressure of water downstream of the pressure modulator 470 decreases. In other words, when the position of the plunger 472 changes to the nozzle 410 side (downstream side), the pressure of water upstream from the pressure modulator 470 decreases, and the side opposite to the nozzle 410 (upstream side). ), The pressure of water upstream of the pressure modulator 470 increases.

  Then, by controlling the excitation of the pulsation generating coil 474, the plunger 472 is advanced and retracted upstream and downstream. That is, when pulsation is added to the water in the flow path 10 (when the pressure of the water in the flow path 10 is changed), the plunger 472 is moved to the cylinder 471 by controlling the excitation voltage flowing through the pulsation generating coil 474. Advancing and retreating in the axial direction (upstream / downstream).

  In this case, the plunger 472 moves from the illustrated original position (plunger original position) to the downstream side 475 by excitation of the pulsation generating coil 474. When the excitation of the pulsation generating coil 474 disappears, the pulsation generating coil 474 returns to the original position by the urging force of the return spring 476. At this time, the return movement of the plunger 472 is buffered by the buffer spring 477. The plunger 472 has a duck pill type check valve 473 in the inside thereof, and prevents backflow to the upstream side.

  Therefore, when the plunger 472 moves from the plunger original position to the downstream side, the water in the cylinder 471 is pressurized and can be pushed into the flow path 10 on the downstream side. In other words, when the plunger 472 moves downstream from the plunger original position, the water in the upstream flow path 10 can be decompressed and sucked into the cylinder 471. At this time, since the plunger original position and the position moved downstream are always constant, the amount of washing water sent to the downstream flow path 10 when the plunger 472 operates is constant.

  Thereafter, when returning to the original position, the washing water flows into the cylinder 471 through the check valve 473. Therefore, at the next downstream side movement of the plunger 472, a fixed amount of washing water is sent to the downstream flow path 10 again. In this manner, the pressure modulation device 470 illustrated in FIG. 11 can pulsate the flow of water in the flow path 10.

  As described above, according to the present embodiment, the spot water discharged from the water discharge hole 411 of the nozzle 410 so as to land on the first range of the female local area, and the first range wider than the first range. And wide water discharge in which washing water is ejected from the water discharge holes 411 of the nozzles 410 so as to uniformly land in the range of 2. That is, the user can switch between wide water discharge for cleaning a wider range at once and spot water discharge for focusing on a narrower range according to his / her preference. The landing force in the center of the spot water landing range is equal to or smaller than the water landing force in the wide water discharge range.

  According to the wide water discharge, the washing water is landed in a wider area of the female part of the user sitting on the toilet seat 200 in a state where the granulated water flow 520 is uniformly distributed in the hollow portion of the hollow conical water discharge 510. be able to. Therefore, a desired wide range can be quickly cleaned. According to spot water discharge, it is possible to wash a narrower range than in the case of wide water discharge, and it is possible to suppress unnecessary strong stimulation from being applied to a female delicate area located near the center of a female local area. Therefore, a bidet cleaning with a very comfortable cleaning feeling can be realized.

  According to this, the washing water ejected from the nozzle 410 by switching the washing water landing range according to the application of the bidet washing becomes a landing force suitable for the widening and narrowing of the landing area to the female local area. Land on the water. Therefore, bidet cleaning can be performed with a landing force suitable for widening and narrowing the landing range of cleaning water in bidet cleaning.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, size, material, arrangement, and the like of each element included in the nozzle 410 and the like are not limited to those illustrated, and can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  10 channel, 100 sanitary washing device, 200 toilet seat, 300 toilet lid, 400 casing, 404 seating detection sensor, 410 nozzle, 411 water discharge hole, 420 nozzle body, 423 swirl chamber, 423e large-diameter inner peripheral wall, 423f inclined inner peripheral wall, 424 Projection part, 425 communication path, 426 water discharge hole, 427 wide water discharge flow path, 428 spot water discharge flow path, 430 throat, 431 throat flow path, 432 taper part, 433 water discharge hole, 440 solenoid valve, 450 heat exchange 470 pressure modulator, 471 cylinder, 472 plunger, 473 check valve, 474 pulsation generating coil, 475 downstream side, 476 return spring, 477 buffer spring, 480 flow rate adjustment valve, 500 washing water, 501s, 501s-1, 501w, 5 3s, 503w, 505s, 505w landing force, 510 hollow conical water discharge, 520 granulation water flow, 530 straight flow, 540 droplet 800 toilet, 801 bowl

Claims (6)

A nozzle having a water discharge hole, and spraying washing water from the water discharge hole and landing on a female local area;
The nozzle is evenly distributed in a first water discharge for ejecting the washing water from the water discharge hole so as to land on the first range of the female local area and a second range wider than the first range. Switching and executing the second water discharge that ejects the washing water from the water discharge hole so as to land,
When switching from the second water discharge to the first water discharge, there is provided a landing force suppression means for ejecting the washing water so that the landing force in the first range of the first water discharge is suppressed. Sanitary washing device characterized by that.   The sanitary washing apparatus according to claim 1, wherein the water landing force suppressing means causes the washing water to be ejected at a lower flow rate in the first water discharge than in the second water discharge.   The sanitary washing apparatus according to claim 2, wherein the water landing force suppressing means causes the washing water to be ejected at a flow velocity smaller than that of the second water discharge in the first water discharge.   The sanitary washing device according to claim 2, wherein the amount of air mixed into the wash water in the first water discharge is greater than the amount of air mixed into the wash water in the second water discharge. Further comprising a pressure modulator for imparting pulsation to the flow of the wash water;
In the first water discharge, the pressure modulator is operated to pulsate the flow of wash water ejected from the water discharge hole to continuously change the flow rate of the wash water,
The sanitary washing device according to claim 2, wherein in the second water discharge, washing water is ejected from the water discharge hole without operating the pressure modulation device. The first water discharge and the second water discharge, the washing water is granulated and ejected from the water discharge hole,
The sanitary washing according to claim 1, wherein the water landing force suppressing means granulates the wash water so that the first water discharge has a particle size smaller than the particle size of the second water discharge. apparatus.

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