JP4737331B2 - Sanitary washing device - Google Patents

Description

  Aspects of the present invention generally relate to a sanitary washing device, and more particularly, to a sanitary washing device that cleans a human body part of a user sitting on a western-style seated toilet with water.

  As a technique for expanding the cleaning range (cleaning area at the time of landing) without moving the local cleaning nozzle, there is a human body cleaning device that can discharge spirally swirled cleaning water from the nozzle spout (Patent Document) 1 and 2). The technique of performing spiral swirling water discharge (hollow conical water discharging) is a useful technique that can adjust the cleaning range depending on the degree of swirling. However, when water is discharged in a hollow cone shape, a hollow portion inside the hollow cone shape, that is, a hollow portion is generated at the time of landing, so there is room for improvement in cleaning performance in 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. .

  On the other hand, there is a sanitary washing device that can obtain a strong washing feeling in a straight flow while securing a wide washing area by the swirl jet by further discharging water in a hollow portion inside the swirl jet (patent) Reference 3). However, in the sanitary washing device described in Patent Literature 3, since the straight flow is further discharged into the hollow portion inside the swirling jet, the washing pressure at the center of the washing area is high, and the female delicate area is strongly stimulated. May be added 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.

  Further, there is a local cleaning device that can change the cleaning area of the spray pattern by changing the interference state between the axial jet flow and the tangential jet flow (Patent Document 4). However, since the local cleaning device described in Patent Document 4 uses an axial jet, the cleaning pressure at the center of the cleaning area is high, and a strong stimulus may be applied to the female delicate area more than necessary. There is. 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.

  On the other hand, there is a water discharge device that can discharge subdivided wash water in a swiveling state (Patent Document 5). However, if the wash water that has been subdivided into a wide range that is required for bidet cleaning that wants to wash a wide area at once is discharged, the subdivided wash water drifts in the air and the desired wash area There is a risk of splashing outside. Then, the scattered washing water adheres to the thigh of the user seated on the toilet seat and the user may feel uncomfortable.

JP 2001-90155 A JP 2001-90151 A JP 2007-100300 A JP 2001-90154 A Japanese Patent No. 3848886

  The present invention has been made on the basis of recognition of such a problem, and it is possible to evenly irrigate the washing area at once by uniformly landing on a wider washing area than a conventional bidet washing, and a delicate area for women. Provides a sanitary washing device that does not cause unpleasant feelings such as a strong irritation or a feeling of being traced in the center more than necessary, and can further prevent splashing of washing water outside the desired washing area The purpose is to do.

  1st invention is the sanitary washing apparatus which discharges wash water toward the human body part from the water discharge hole of the nozzle used at the time of bidet washing, Comprising: The water discharge which discharges wash water from the said water discharge hole to a hollow cone shape And the washing water discharged in the hollow conical shape from the water discharge holes is granulated by crushing the liquid film of the washing water discharged in the hollow conical shape before landing on the local body part. A crushing means for generating a water flow and filling the hollow portion of the wash water discharged in the hollow conical shape with the granulated water flow, and downstream of the water discharge means and upstream of the water discharge hole The thickness of the liquid film provided is greater than the thickness of the liquid film of the wash water discharged from the water discharge means in a hollow conical shape from the water discharge hole. A sanitary washing device characterized by comprising an enlargement means That.

  According to this sanitary washing apparatus, the washing water sprayed from the nozzle is first discharged from the water discharge hole in the shape of a hollow cone as a liquid film having a hollow portion at the center. Hereinafter, for convenience of explanation, the washing water discharged in the hollow conical shape is referred to as “hollow conical discharged water”. And the hollow part of the hollow conical water discharge transitions to a water stream that has been crushed and granulated by the crushing means (hereinafter referred to as “granulated water stream” for convenience of explanation) before landing on the local body part. . Therefore, the hollow conical water discharge reaches a wider area of the human body part of the user sitting on the toilet seat in a state where the hollow portion is filled with the granulated water flow.

  Therefore, for example, during menstruation of women, menstrual blood stains may adhere over a wide area around the female local area, but the sanitary washing device of the present invention responds to the desire to clean the wide area at once. be able to. That is, it is possible to suppress the occurrence of a hollow portion at the time of landing, and to solve the problem regarding the cleaning performance in the hollow portion.

  Here, the washing range (washing area at the time of landing) of the washing water is, for example, about φ35 to 45 mm. Further, the hollow conical water spouting water reaches the human body part in a state where the liquid film is crushed and granulated. At this time, the liquid film thickness expanding means expands the liquid film of the cleaning water discharged in the hollow conical shape, so that the water discharge hole is larger than the thickness of the liquid film of the cleaning water discharged in the hollow conical shape from the water discharging means. The thickness of the liquid film of the wash water discharged in a hollow conical shape is increased.

  In addition, since the granulated water flow filled with the hollow portion of the hollow conical water discharge lands near the center of the cleaning area, the cleaning pressure at the center of the cleaning area is lower than when the conventional straight flow lands. There is little possibility that strong stimulation will be applied more than necessary to the delicate area of women located near the center of the female local area. Therefore, the sanitary washing device of the present invention provides a problem of giving unpleasant sensation due to an excessively strong sense of irritation in the central part more than necessary in washing delicate areas of women sensitive to irritation, i.e., to clean a wide range at once. The problem of cleaning feeling required for bidet cleaning can be solved, and bidet cleaning with a very comfortable cleaning feeling can be realized.

  Further, the sanitary washing device of the present invention can land at once in a wider range than conventional bidet washing, so that the landing position can be moved by moving the nozzle in the front-rear direction and the left-right direction, and the toilet seat It is not necessary for the user sitting on the floor to move the landing position by moving the sitting position. Therefore, the sanitary washing device of the present invention is less likely to give a sense of being traced when washing a human body part in a wide range. Also by this, the sanitary washing device of the present invention can realize a bidet washing with a very comfortable washing feeling without feeling uncomfortable feeling as traced in washing delicate areas of women sensitive to stimulation.

  Further, in the sanitary washing device of the present invention, the washing water discharged from the nozzle is discharged as a hollow conical water discharge, but is crushed by a crushing means at a position somewhat away from the nozzle and transitions to a granulated water flow. More specifically, the crushing means crushes the liquid film by generating a flow of water in the direction crossing the liquid film inside the wash water discharged in a hollow conical shape. According to this, since air easily enters the hollow portion of the hollow conical water discharge, it is possible to prevent the pressure of the hollow portion of the hollow conical water discharge from becoming smaller. Therefore, it can suppress that a liquid film wave generate | occur | produces in hollow conical water discharge.

  Here, the “liquid film wave” will be described. First, the pressure in the hollow portion of the hollow conical water discharge is smaller than the pressure outside the wash water discharged in the hollow conical shape. At this time, when the hollow conical water discharge continues to expand without breaking the liquid film, the thickness of the liquid film decreases as the water discharge diameter (conical diameter) increases. If it does so, the liquid film of hollow conical water spouting will become easy to receive to the influence of the pressure difference between the hollow part of hollow conical water spouting and the outer part of the wash water discharged in the hollow conical form. Therefore, the liquid film state is maintained in the hollow conical water discharge at a position somewhat away from the water discharge hole due to the pressure difference between the hollow portion of the hollow conical water discharge and the outer portion of the hollow conical water discharge. A phenomenon that hits a wave occurs. In the present specification, such a phenomenon is referred to as “liquid film wave”.

  When the liquid film of the hollow conical water discharge is crushed after the liquid film wave is generated, the granulated water flow after crushed will be scattered in an irregular direction due to the influence of the wave, and the desired washing It becomes easy to scatter to the outside of the area. Then, the scattered washing water adheres to the thigh of the user seated on the toilet seat and the user may feel uncomfortable.

  Further, the liquid film wave is generated when the thickness of the liquid film is reduced, and the trajectory of the liquid film is further increased due to the generation of the wave, so that the thickness of the liquid film is further reduced. That is, when the liquid film wave is generated in the hollow conical water discharge, the hollow conical water discharge is crushed into particles having a relatively small diameter. Since the diameter and mass of the crushed particles are small, the small particles drift in the air and easily scatter to the outside of the desired cleaning area. Then, the scattered washing water adheres to the thigh of the user seated on the toilet seat and the user may feel uncomfortable.

  In contrast, the sanitary washing device of the present invention can suppress the occurrence of liquid film waves in the hollow conical water discharge. Therefore, it is possible to prevent the water flow that has been granulated due to the influence of the waves from splashing in an irregular direction, and to prevent the cleaning water from splashing outside the desired cleaning area. It is possible to suppress wetting when necessary. Moreover, it can suppress that hollow conical water discharge is crushed into the particle | grains which have a smaller diameter. That is, the diameter of the granulated water flow can be increased by preventing the occurrence of liquid film waves. Further, as described above, the liquid film thickness enlarging means enlarges the liquid film of the cleaning water discharged in a hollow cone shape, thereby increasing the thickness of the cleaning water liquid film discharged in the hollow cone shape from the water discharging means. In addition, the thickness of the liquid film of the cleaning water discharged in a hollow conical shape from the water discharge hole is increased. Therefore, the diameter of the granulated water stream can be increased more reliably.

  For this reason, the granulated water flow is less likely to drift in the air and is less likely to scatter outside the desired cleaning area. That is, it is possible to prevent the cleaning water from scattering to the outside of the desired cleaning area, and it is possible to suppress the portion outside the desired cleaning area from getting wet unnecessarily. Accordingly, it is possible to further solve the problem that the user sitting on the toilet seat feels uncomfortable because the portion outside the desired cleaning area gets wet unnecessarily.

  Further, since the liquid film wave can be prevented from occurring and the liquid film of the wash water discharged in a hollow conical shape can be enlarged, the diameter of the granulated water flow can be further increased. The water pressure and the amount of landing water can be further increased. The “landing pressure” is a momentum per unit area, and refers to a force that removes, peels off, or floats. On the other hand, “amount of landing water” is the amount of water landing per unit time, and refers to the ability to wash away dirt. Thereby, 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.

  Further, according to the sanitary washing device of the present invention, the landing pressure at the landing portion of the cleaning water is substantially the same at the central portion and the outer peripheral portion of the landing portion. Alternatively, the landing pressure at the landing portion of the washing water is higher at the outer peripheral portion than at the central portion of the landing portion.

  Here, 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 pressure at the outer periphery is substantially the same as the water landing pressure at the center or higher than the water landing pressure at the center, the cleaning water having a high cleaning power reaches the area where menstrual stains are to be removed. . On the other hand, since the wash water having a low landing pressure is landed on the delicate area of the woman, the feeling of irritation stronger than necessary is not added. Therefore, the sanitary washing device of the present invention can remove or lift menstrual stains in a shorter time, and can realize a bidet washing with a very comfortable washing feeling. Therefore, the sanitary washing device of the present invention is suitable as a device used by women during menstruation.

  In addition, according to the sanitary washing device of the present invention, the amount of landing water in the landing portion of the cleaning water is substantially the same in the central portion and the outer peripheral portion of the landing portion. Alternatively, the amount of landing water in the washing water landing portion is larger in the outer peripheral portion than in the central portion of the landing portion.

  Here, as described above, the outer peripheral portion of the desired cleaning area is an area that is desired to be actively cleaned when menstrual blood stains are attached to a woman. Therefore, when the amount of landing water at the outer periphery is substantially the same as the amount of water landing at the center or larger than the amount of water landing at the center, a sufficient amount of washing water reaches the area where menstrual contamination is desired to be removed. . On the other hand, since the washing water with a small amount of landing water reaches the delicate area of the woman, discomfort caused by washing with a larger amount of water than necessary can be suppressed. Therefore, menstrual blood stains are reliably taken in by the washed water that has landed, washed away in a shorter time, and a bidet cleaning with a very comfortable cleaning feeling can be realized. Therefore, the sanitary washing device of the present invention is suitable as a device used by women during menstruation.

  Further, according to a second aspect, in the first aspect, the liquid film thickness enlargement unit is configured so that the liquid film thickness enlargement unit is more than the flow rate of the cleaning water when flowing into the liquid film thickness enlargement unit. The sanitary washing apparatus is characterized in that the liquid film of the wash water discharged in the hollow conical shape from the water discharge hole is thickened by slowing the flow rate of the wash water when flowing out.

  According to this sanitary washing device, the liquid film thickness enlarging means has a slower flow rate of the cleaning water when flowing out from the liquid film thickness enlarging means than the flow speed of cleaning water flowing into the liquid film thickness expanding means. By doing so, the liquid film of the wash water discharged in the shape of a hollow cone is thickened. Therefore, the liquid film thickness enlarging means can averagely increase the thickness of the liquid film of the cleaning water flowing inside the liquid film thickness enlarging means. Therefore, the liquid film thickness enlarging means can more reliably prevent generation of grains having a smaller diameter due to variations in the thickness of the liquid film. Thereby, the sanitary washing apparatus of this invention can implement | achieve the bidet washing | cleaning of a very comfortable cleaning feeling.

  In addition, according to a third aspect, in the second aspect, the liquid film thickness expanding means is more than the liquid film thickness expanding means than the resistance given to the cleaning water when flowing into the liquid film thickness expanding means. The sanitary washing device is characterized by slowing the flow rate of the washing water by increasing the resistance given to the washing water when flowing out of the washing water.

  According to this sanitary washing device, the liquid film thickness enlargement means is more resistant to wash water when it flows out of the liquid film thickness enlargement means than it is given to the wash water when it flows into the liquid film thickness enlargement means. The flow rate of the washing water is decreased by increasing. Therefore, the cleaning water that has flowed into the liquid film thickness enlarging means is gradually decelerated on the inflow side of the liquid film thickness enlarging means, and is rapidly decelerated on the outflow side of the liquid film thickness enlarging means. Thereby, it can suppress that the washing water which flowed into the liquid film thickness enlargement means receives larger resistance when the speed is higher, or is granulated by receiving an impact. Therefore, it is possible to decelerate more stably while maintaining the cleaning water flowing inside the liquid film thickness expanding means in a liquid film state. Thereby, the thickness of a liquid film can be expanded more reliably.

  According to a fourth aspect of the present invention, in the second aspect, the liquid film thickness increasing means is a throat that is formed in a cylindrical shape and has a flow path therein, and the throat has a hollow conical shape from the water discharge means. Sanitary cleaning characterized in that the discharged cleaning water is received by the inner wall of the flow path, and the flow rate of the cleaning water is reduced by a frictional force generated when the cleaning water passes along the inner wall of the flow path. Device.

  According to this sanitary washing device, the liquid film thickness increasing means is a throat that is formed in a cylindrical shape and has a flow path therein, and the throat is a flow path for the wash water discharged in a hollow conical shape from the water discharge means. The flow rate of the cleaning water is reduced by the frictional force generated when the cleaning water passes along the inner wall of the flow path. Therefore, the throat can receive the impact of the cleaning water uniformly in the circumferential direction. Therefore, the throat can discharge water from the water discharge hole by increasing the thickness of the liquid film with less variation in the circumferential direction of the cleaning water. Thereby, the throat can more reliably prevent generation of grains having a smaller diameter due to variations in the thickness of the liquid film.

  Moreover, 5th invention is a sanitary washing apparatus characterized by the part between the said water discharging means and the said throat being open | released by air | atmosphere in 4th invention.

  According to this sanitary washing device, the portion between the water discharging means and the throat is open to the atmosphere. According to this, it can suppress that a negative pressure generate | occur | produces between the outer peripheral side of the liquid film of the wash water discharged in the hollow cone shape from the water discharging means, and the inner wall of the flow path of a throat. Therefore, it is possible to suppress the liquid film of the cleaning water discharged from the water discharging means from being discharged into a hollow cone from being granulated inside the throat by being pulled by the negative pressure and becoming unstable. That is, the state of the liquid film can be maintained inside the throat, and the thickness of the liquid film can be expanded more reliably.

In addition, in a sixth aspect based on the second aspect, the nozzle is configured to discharge a hollow conical cleaning water formed by a swirling flow, and the hollow conical cleaning discharged from the spout. receiving water, the washing water is decelerating the wash water while maintaining the state of the liquid film by passing by along the inner wall and have a, an annular portion for increasing the thickness of the liquid film of the cleaning water Further, on the downstream side of the annular portion, the water discharging hole for discharging the cleaning water that has passed through the annular portion into the hollow conical shape is provided, and the liquid with the hollow conical cleaning water discharged from the water discharging hole is provided. The membrane is a sanitary washing device characterized in that it is crushed.

According to this sanitary washing device, the hollow conical washing water discharged from the outlet is received between the outlet and the outlet and the state of the liquid film is changed by passing the washing water along the inner wall. An annular portion is provided that slows the wash water while maintaining it and increases the thickness of the liquid film of the wash water. Therefore, it is possible by a very simple structure, the thickness of the liquid film more reliably.

  According to the aspect of the present invention, it is possible to evenly land in a wider washing area than the conventional bidet washing, and the washing area can be quickly washed, and in the delicate area washing of a woman, it is more central than necessary. There is provided a sanitary washing device that does not give unpleasant feelings such as a strong sense of irritation or a tactile sensation, and can further suppress the scattering of washing water outside a desired washing area.

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. It is a conceptual schematic diagram showing the principal part structure of the sanitary washing apparatus concerning this embodiment. It is a conceptual schematic diagram showing the outline of the state of the wash water discharged from the nozzle of this embodiment. It is a graph showing the landing pressure and the amount of landing water in the washing water landing part. It is a graph showing the other landing pressure and the amount of landing water in the washing water landing part. It is a cross-sectional schematic diagram showing the nozzle concerning the specific example of this embodiment. It is a cross-sectional schematic diagram showing the nozzle concerning a comparative example. It is a cross-sectional schematic diagram which illustrates the modification of a throat.

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 a human body part of a 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 | clean the human body part of the user who sat on the toilet seat 200 by injecting 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 conceptual schematic diagram showing the main configuration of the sanitary washing device according to the present embodiment.
FIG. 3 is a conceptual schematic diagram showing an outline of the state of the cleaning water discharged from the nozzle of the present embodiment.
Moreover, FIG. 4 is a graph showing the landing pressure and the amount of landing water in the washing water landing section.
FIG. 5 is a graph showing another landing pressure and the amount of landing water in the washing water landing portion.

  As described above with reference to FIG. 1, the nozzle 410 according to the present embodiment can spray the cleaning water 500 from the water discharge hole 411 toward the human body part of the user sitting on the toilet seat 200. At this time, as shown in FIGS. 2 and 3, the cleaning water 500 is discharged from the water discharge hole 411 in a hollow conical shape as a liquid film having a hollow portion at the center. That is, the sanitary washing device 100 according to the present embodiment includes the water discharge means 401 that discharges the wash water in a hollow conical shape from the water discharge hole 411 of the nozzle 410. Hereinafter, for convenience of explanation, the washing water discharged in the hollow conical shape is referred to as “hollow conical discharged water”.

  In the hollow portion of the hollow conical water discharge 510, the amount of air discharged from the hollow portion of the hollow conical water discharge 510 to the outside increases following the flow of the liquid film. On the other hand, since the passage of air entering the hollow portion of the hollow conical water discharge 510 is blocked by the liquid film of the hollow conical water discharge 510, the air is discharged from the hollow portion of the hollow conical water discharge 510 to the center of the air. It will be limited. Therefore, the amount of air entering the hollow portion of the hollow conical water discharge 510 is reduced, and a negative pressure state in which the pressure is lower than the outside air is generated in the hollow portion of the hollow conical water discharge 510.

  In addition, the sanitary washing device 100 according to the present embodiment applies a liquid film of the hollow conical water discharge 510 so that the hollow conical water discharge 510 fills the hollow portion of the hollow conical water discharge 510 before the hollow conical water discharge 510 reaches the human body part. A crushing means for crushing is provided. That is, although the details of the crushing means will be described later, as shown in FIG. 3, the water flow granulated by crushing the liquid film of the hollow conical water discharge 510 (hereinafter, for convenience of explanation, “granulated water flow”). "). A part of the granulated water flow 520 traveling in the traveling direction of the liquid film is drawn into the hollow portion by the negative pressure generated in the hollow portion of the hollow conical water discharge 510. Thereby, the crushing means can fill the hollow portion of the hollow conical water discharge 510 with the granulated water flow 520.

  That is, the washing water 500 sprayed from the nozzle 410 is first discharged from the water discharge hole 411 as the hollow conical water discharge 510, and the human body part of the user sitting on the toilet seat 200 in a state where the hollow portion is filled with the granulated water flow 520. Of a wider range of water.

  Here, as shown in FIG. 2, the sanitary washing device 100 according to the present embodiment has a liquid film thickness that is provided on the downstream side of the water discharge means 401 and on the upstream side of the water discharge hole 411 of the nozzle 410. Enlarging means 402 is provided. The liquid film thickness expanding means 402 increases the thickness of the liquid film of the hollow conical water discharge 510. More specifically, the liquid film thickness enlarging means 402 is configured such that the liquid film thickness D2 of the hollow conical water discharge 510 discharged from the water discharge hole 411 of the nozzle 410 is the hollow conical shape discharged from the water discharge means 401. It can be made thicker than the thickness D1 of the liquid film of the discharged water. Therefore, the diameter of the granulated water flow 520 generated by crushing the liquid film of the hollow conical water discharge 510 is about 1 mm (millimeters), for example, and the diameter is about 10 to 100 μm (microns). Big in comparison.

  When the hollow conical water discharge 510 is crushed by the crushing means and lands on the human body part in a state where the hollow portion is filled with the granulated water flow 520, the landing pressure and the amount of the landing water in the landing portion of the washing water 500 are: As shown in FIG. 4, the center portion and the outer peripheral portion of the landing portion are substantially the same, or as shown in FIG. 5, the outer portion is larger than the central portion of the landing portion.

Here, in the present specification, “landing pressure” is a momentum per unit area and refers to a force that removes, peels off, or floats.
In the specification of the present application, “amount of landing water” is the amount of water landing per unit time, and refers to the power to wash away dirt.

  The cleaning range of the cleaning water 500 (the cleaning area at the time of landing) is about φ35 to 45 mm, for example. That is, the width of the rising portion shown in FIGS. 4 and 5 corresponds to, for example, about 35 to 45 mm.

  Therefore, for example, during menstruation, menstrual blood stains may adhere over a wide area around the female local area, but the sanitary washing device 100 according to the present embodiment wants to clean the wide area at once. We can meet your needs. In addition, since the granulated water flow 520 filled with the hollow portion of the hollow conical water discharge 510 lands near the center of the cleaning area, the cleaning pressure in the central portion of the cleaning area is higher than that when the conventional straight flow lands. It is also low, and there is little possibility that strong stimulation will be applied to the delicate area of women located near the center of the women's local area. Therefore, the sanitary washing device 100 according to the present embodiment can realize bidet washing with a very comfortable washing feeling.

  Moreover, since the sanitary washing device 100 according to the present embodiment can land at once in a wider range than the conventional bidet washing, the nozzle 410 is moved in the front-rear direction and the left-right direction (see arrows shown in FIG. 1). There is no need to move the landing position by moving the seating position, or the user sitting on the toilet seat 200 moves 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 the human body local area 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.

  Further, according to the present embodiment, the landing pressure at the landing portion of the cleaning water 500 is substantially the same at the central portion and the outer peripheral portion of the landing portion as shown in FIG. Or, as shown in FIG. 5, the landing pressure at the landing portion of the cleaning water 500 is higher at the outer peripheral portion than at the central portion of the landing portion. Here, 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 pressure at the outer peripheral portion is substantially the same as the water landing pressure at the central portion or higher than the water landing pressure at the central portion, the cleaning water 500 having a high cleaning power reaches the area where menstrual dirt is to be removed. To do. On the other hand, since the wash water having a low landing pressure 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. Therefore, the sanitary washing device 100 according to the present embodiment is suitable as a device used by women during menstruation.

  In addition, according to the present embodiment, the amount of landing water in the landing portion of the cleaning water 500 is substantially the same in the central portion and the outer peripheral portion of the landing portion as shown in FIG. Alternatively, as shown in FIG. 5, the amount of landing water in the landing portion of the cleaning water 500 is larger in the outer peripheral portion than in the central portion of the landing portion. Here, as described above, the outer peripheral portion of the desired cleaning area is an area that is desired to be actively cleaned when menstrual blood stains are attached to a woman. Therefore, when the amount of landing water at the outer peripheral portion is substantially the same as the amount of landing water at the central portion or larger than the amount of landing water at the central portion, a sufficient amount of the washing water 500 reaches the area where menstrual stains are to be removed. To do. On the other hand, since the washing water with a small amount of landing water reaches the delicate area of the woman, discomfort caused by washing with a larger amount of water than necessary can be suppressed. Therefore, menstrual blood stains can be reliably taken in by the washed water 500 that has landed, washed away in a shorter time, and a bidet cleaning with a very comfortable cleaning feeling can be realized. Therefore, as described above, the sanitary washing device 100 according to the present embodiment is suitable as a device used by women during menstruation.

Next, a specific example of the present embodiment will be described with reference to the drawings.
FIG. 6 is a schematic cross-sectional view illustrating a nozzle according to a specific example of the present embodiment.
FIG. 7 is a schematic cross-sectional view showing a nozzle according to a comparative example.
FIG. 8 is a schematic cross-sectional view illustrating a modification of the throat.

  As shown in FIG. 6, the nozzle 410 of this specific example includes a nozzle body (water discharge means) 420 and a throat (liquid film thickness expanding means and annular portion) 430. Inside the nozzle body 420, a nozzle body channel 421 through which cleaning water supplied from a water source (not shown) passes, a swirling chamber 423 capable of generating a swirling flow, and the washing water from the swirling chamber 423 is guided to the throat 430. And a communication path 425 is provided. 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 nozzle body channel 421 is eccentrically connected to the swirl chamber 423. More specifically, the nozzle body channel 421 is connected in the tangential direction of the large-diameter inner peripheral wall 423e of the swirl chamber 423.

  The throat 430 is formed in a cylindrical shape. Inside the throat 430, a throat flow path 431 through which cleaning water discharged from the communication passage 425 of the nozzle body 420 passes is provided. Further, at one end of the throat flow path 431, a water discharge hole 433 (water discharge hole) for discharging the cleaning water that has passed through the throat flow path 431 to the outside of the throat 430 is formed. 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 this specific example, 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 cleaning water is supplied from a water source (not shown) to the nozzle 410, the cleaning water passes through the nozzle body channel 421 and flows into the swirl chamber 423. Here, since the nozzle main body flow path 421 is connected in the tangential direction of the large-diameter portion inner peripheral wall 423e of the swirl chamber 423, the wash water flowing into the swirl chamber 423 flows into the large-diameter portion inner peripheral wall 423e and the inclined inner peripheral wall 423f. Turn along. Then, the wash water swirled in the swirl chamber 423 passes through the communication path 425 while maintaining the swirl force, and is discharged into the throat flow path 431 of the throat 430 from one end (water discharge port) of the communication path 425. At this time, since the cleaning water discharged from the nozzle body 420 maintains the turning force, it is discharged in a hollow conical shape as a liquid film having a hollow portion at the center.

  The washing water discharged from the nozzle body 420 in a hollow conical shape is received by the inner wall of the throat flow path 431. Subsequently, 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 slower toward the water discharge hole 433. Thus, as shown in FIG. 6, the thickness of the liquid film in the vicinity of the water discharge hole 433 is the thickness of the liquid film when water is discharged from the nozzle body 420 or the liquid immediately after flowing into the throat flow path 431. Thicker than the film thickness. Alternatively, the thickness D2 of the liquid film of the hollow conical water discharge 510 discharged from the water discharge hole 433 is larger than the thickness D1 of the liquid film of the hollow conical water discharge discharged from the nozzle body 420. That is, in this specific example, the nozzle body 420 functions as the water discharge means 401 described above with reference to FIG.

  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. That is, the throat 430 can make the flow rate of the cleaning water flowing near the inner wall of the throat flow channel 431 different from the flow rate of the cleaning water flowing nearer the center than the vicinity of the inner wall of the throat flow channel 431. . In other words, the throat 430 includes a flow outside the cleaning water liquid film (on the inner wall side of the throat flow path 431), a flow inside the cleaning water liquid film (on the central part side of the throat flow path 431), A speed difference can be made between the two. This is because the cleaning water outside the liquid film (on the inner wall side of the throat flow path 431) has a larger frictional force than the cleaning water inside the liquid film (on the central portion side of the throat flow path 431). This is because it is slower than the inner cleaning water by receiving from the inner wall.

  Therefore, a vortex is generated in the direction crossing the liquid film as indicated by an arrow A1 in FIG. 6 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, and thus the cleaning water discharged from the water discharge hole 433 is the tapered portion 432. Flowing along. Therefore, eddy currents are more likely to occur in the direction crossing the liquid film in the wash water discharged from the water discharge holes 433.

  Then, the wash water discharged from the water discharge hole 433 is discharged as a liquid film having a hollow portion at the center, that is, as the hollow conical water discharge 510, but to the granulated water flow 520 at a position somewhat away from the water discharge hole 433. Transition. More specifically, since a vortex flow is generated in the hollow conical water discharge 510 discharged 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 discharged 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 discharged from the water discharge hole 433 transitions to the granulated water flow 520. That is, the throat 430 of this specific example functions as the liquid film thickness enlargement unit 402 and also functions as a crushing unit.

  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 this specific example, the granulated water flow 520 can be prevented from landing outside the cleaning area, and a portion outside the desired cleaning 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, as described above with reference to FIG. 2, the diameter of the granulated water flow 520 is, for example, about 1 mm, and is larger than a mist having a diameter of, for example, about 10 to 100 μm. As described above, this is because the flow rate of the cleaning water flowing through the throat flow path 431 becomes slower toward the water discharge hole 433, and the thickness of the liquid film in the vicinity of the water discharge hole 433 becomes thicker. That is, the hollow conical water discharge 510 discharged with a thicker liquid film is forcibly granulated by the vortex generated inside the throat 430, so that the diameter of the granulated water flow 520 is mist or the like. Big in comparison.

  In addition, since the flow rate of the cleaning water flowing through the throat flow path 431 becomes slower toward the water discharge hole 433, the throat 430 can increase the thickness of the liquid film of the cleaning water flowing through the throat flow path 431 on average. it can. Therefore, the throat 430 can more reliably prevent generation of grains having a smaller diameter due to variations in the thickness of the liquid film. Further, since the throat 430 receives the cleaning water discharged from the nozzle body 420 by the inner wall of the throat flow path 431, the impact of the cleaning water can be received uniformly in the circumferential direction. Therefore, the throat 430 can discharge water from the water discharge hole 433 by increasing the thickness of the liquid film with less variation in the circumferential direction of the cleaning water. Thereby, the throat 430 can more reliably prevent generation of grains having a smaller diameter due to variations in the thickness of the liquid film.

  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 this specific example, 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 pressure and the amount of landing water in the landing section. 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 the air outside the hollow portion of the hollow conical water discharge 510 enters the hollow portion from a crack generated between adjacent vortex flows as indicated by an arrow A2 shown in FIG. 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.

Here, the liquid film wave will be described with reference to a comparative example shown in FIG.
The nozzle of the comparative example shown in FIG. 7 does not have a throat. Therefore, the washing water that has flowed into the swirl chamber 423 swirls along the large-diameter inner peripheral wall 423e and the inclined inner peripheral wall 423f, passes through the communication passage 425, and forms a liquid film having a hollow portion at the center, that is, a hollow conical shape. Water is discharged as water discharge 510. That is, in the nozzle of this comparative example, one end of the communication path 425 functions as the water discharge hole 426.

  At this time, the flow rate of the wash water passing through the communication passage 425 of this comparative example is not as slow as the flow rate of the wash water flowing through the throat flow path 431 of the specific example shown in FIG. Therefore, the thickness of the cleaning water liquid film passing through the communication passage 425 of this comparative example is smaller than the thickness of the cleaning water liquid film flowing through the throat flow path 431 of the specific example shown in FIG. In addition, since the thickness of the liquid film of the cleaning water that passes through the communication path 425 of this comparative example is thinner, vortex flow hardly occurs in the direction of crossing the liquid film inside the cleaning water. Therefore, the hollow conical water discharge 510 discharged from the water discharge hole 426 of this comparative example is less likely to be crushed than the specific example shown in FIG.

  Then, the hollow conical spouting water 510 continues to expand without being crushed, and the thickness of the liquid film becomes thinner as the diameter of the spouting water discharge of the hollow conical spouting water 510 increases. Thereby, the liquid film of the hollow conical water discharge 510 is easily affected by the pressure difference between the hollow portion of the hollow conical water discharge 510 and the outer portion of the hollow conical water discharge 510.

  Therefore, as shown in FIG. 7, the hollow conical shape at a position spaced apart from the water discharge hole 426 to some extent by the pressure difference between the hollow portion of the hollow conical water discharge 510 and the outer portion of the hollow conical water discharge 510. In the discharged water 510, a phenomenon that a wave is generated while the state of the liquid film is maintained occurs. In the present specification, such a phenomenon is referred to as “liquid film wave”.

  When the liquid film of the hollow conical water discharge 510 is crushed after the liquid film wave is generated, the granulated water flow after crushed will be scattered in an irregular direction due to the influence of the wave, It becomes easy to scatter to the outside of the washing area. Then, the scattered washing water adheres to the user's thighs and the like seated on the toilet seat 200, and the user may feel uncomfortable.

  Further, the liquid film wave is generated when the thickness of the liquid film is reduced, and the trajectory of the liquid film is further increased due to the generation of the wave, so that the thickness of the liquid film is further reduced. That is, when the liquid film wave is generated in the hollow conical water discharge 510, the hollow conical water discharge 510 is crushed into grains having a smaller diameter than the granulated water flow 520 shown in FIG. Since the diameter and mass of the crushed particles are small, the small particles drift in the air and easily scatter to the outside of the desired cleaning area. Then, the scattered washing water adheres to the user's thighs and the like seated on the toilet seat 200, and the user may feel uncomfortable.

  On the other hand, in the nozzle 410 according to this specific example, the thickness of the liquid film in the vicinity of the water discharge hole 433 is the thickness of the liquid film when water is discharged from the nozzle body 420 or flows into the throat flow path 431. It is larger than the thickness of the liquid film immediately after. Alternatively, the thickness D2 of the liquid film of the hollow conical water discharge 510 discharged from the water discharge hole 433 is larger than the thickness D1 of the liquid film of the hollow conical water discharge discharged from the nozzle body 420. Therefore, eddy currents are more likely to occur in the direction crossing the liquid film in the wash water discharged from the water discharge holes 433. According to this, since the hollow conical water discharge 510 is easily crushed and air easily enters the hollow portion, the pressure in the hollow portion of the hollow conical water discharge 510 can be prevented from becoming smaller. Therefore, it can suppress that a liquid film wave generate | occur | produces in the hollow conical water discharge 510. FIG.

  According to this, the water flow granulated by the influence of the wave is scattered in an irregular direction, and it is possible to suppress the washing water from being scattered outside the desired washing area. It can suppress that a part gets wet unnecessary. Further, the hollow conical water discharge 510 can be prevented from being crushed into grains having a smaller diameter. That is, in order to prevent the occurrence of the liquid film wave or before the liquid film wave is generated, the hollow conical water discharge 510 discharged in a thicker liquid film is generated inside the throat 430. Since it is forcibly crushed and granulated by the vortex, the diameter of the granulated water stream 520 can be increased. Therefore, it is possible to prevent the cleaning water from scattering to the outside of the desired cleaning area, and it is possible to suppress the portion outside the desired cleaning area from getting wet unnecessarily. Therefore, it is possible to suppress a user sitting on the toilet seat 200 from feeling uncomfortable when a portion outside the desired cleaning area gets wet unnecessarily.

  Moreover, since it can suppress that a liquid film wave generate | occur | produces in the hollow conical water discharge 510, it can suppress that the pressure of the hollow part of the hollow conical water discharge 510 becomes small too much. Therefore, in a state where the hollow portion of the hollow conical water discharge 510 is filled with the granulated water flow 520, the washing water can be landed on a wider area of the human body part of the user sitting on the toilet seat 200, and the desired wide range. Can be cleaned quickly.

  Further, in the nozzle 410 of this specific example, a gap is provided between the nozzle body 420 and the throat 430. That is, the portion between the nozzle body (water discharge means) 420 and the throat (liquid film thickness expanding means) 430 is open to the atmosphere. According to this, it can suppress that a negative pressure generate | occur | produces between the outer peripheral side of the liquid film of the wash water discharged from the nozzle main body 420 in the shape of a hollow cone, and the inner wall of the throat flow path 431. Therefore, the liquid film of the cleaning water discharged from the nozzle body 420 in a hollow conical shape can be prevented from being granulated inside the throat 430 by being pulled by the negative pressure and becoming unstable. . That is, the state of the liquid film can be maintained inside the throat 430, and the thickness of the liquid film can be expanded more reliably.

  In the case where the spiral groove 435 is formed on the inner wall of the throat channel as in the modification shown in FIG. 8, the washing water flowing through the throat channel has a greater resistance from the spiral groove 435. Receive. More specifically, the washing water flowing through the throat channel is larger on the outflow side (water discharge hole 433 side) of the throat channel than the inflow side (side of the communication channel 425 of the nozzle body 420) of the throat channel. Receive resistance. The washing water flowing through the throat flow path maintains the speed of the swirling component of the washing water flowing through the throat flow path, and the speed of the straight traveling component is reduced.

  According to this, the wash water that has flowed into the throat flow path is gradually decelerated on the inflow side of the throat flow path, and is decelerated all at once on the outflow side of the throat flow path. Therefore, the washing water discharged from the nozzle body 420 and flowing into the throat flow path can be prevented from being granulated by receiving a larger resistance when the speed is higher or receiving an impact. Therefore, in this modification, it is possible to decelerate more stably while maintaining the cleaning water flowing through the throat flow path in a liquid film state. Thereby, the thickness of a liquid film can be expanded more reliably.

  In addition, the contact time between the cleaning water flowing through the throat flow path and the spiral groove 435 is longer than when the spiral groove 435 is not provided. Therefore, in this modification, the wash water flowing through the throat flow channel receives frictional force from the spiral groove 435 for a longer time than when the spiral groove 435 is not provided. As a result, the speed difference between the flow outside the cleaning water liquid film (the inner wall side of the throat flow path) and the flow inside the cleaning water liquid film (the center side of the throat flow path) is It is larger than the case where the spiral groove 435 is not provided.

  Therefore, the thickness of the liquid film of the cleaning water flowing through the throat flow path of this modification is larger than the thickness of the liquid film of the cleaning water flowing through the throat flow path 431 of the specific example shown in FIG. That is, by forming the spiral groove 435 on the inner wall of the throat channel, the thickness of the liquid film near the water discharge hole 433 or the thickness D2 of the liquid film of the hollow conical water discharge 510 discharged from the water discharge hole 433 is obtained. Can be made thicker.

  Therefore, in this modification, it can prevent more reliably that the particle | grains which have a smaller diameter are produced | generated, and can make the diameter of the granulated water flow 520 larger. Thereby, it can suppress more reliably that cleaning water disperses to the exterior of a desired cleaning area, and can suppress that the part outside a desired cleaning area gets wet unnecessarily. Therefore, it is possible to suppress a user sitting on the toilet seat 200 from feeling uncomfortable when a portion outside the desired cleaning area gets wet unnecessarily.

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, dimensions, material, arrangement, etc. of each element included in the nozzle 410, the nozzle body 420, the throat 430, and the like, the installation form of the throat 430, 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.

  DESCRIPTION OF SYMBOLS 100 Sanitary washing apparatus, 200 Toilet seat, 300 Toilet lid, 400 Casing, 401 Water discharge means, 402 Liquid film thickness expansion means, 404 Seating detection sensor, 410 Nozzle, 411 Water discharge hole, 420 Nozzle main body (water discharge means), 421 Nozzle main body Flow path, 423 swirl chamber, 423e large diameter inner peripheral wall, 423f inclined inner peripheral wall, 424 projecting part, 425 communication path, 426 water discharge hole, 430 throat, 431 throat flow path, 432 taper part, 433 water discharge hole, 435 spiral Groove, 500 wash water, 510 hollow conical water discharge, 520 granulated water flow, 800 toilet bowl, 801 bowl

Claims (6)

A sanitary cleaning device that discharges cleaning water from a nozzle hole used for bidet cleaning toward a local body part,
Water discharging means for discharging cleaning water in a hollow conical shape from the water discharge hole;
Before the washing water discharged in the hollow conical shape from the water discharge hole reaches the human body local part, a granulated water flow is generated by crushing the liquid film of the washing water discharged in the hollow cone shape. And crushing means for filling the hollow portion of the wash water discharged into the hollow cone with the granulated water flow,
Provided downstream from the water discharge means and upstream from the water discharge hole, and from the water discharge hole to the hollow cone shape rather than the thickness of the liquid film of the washing water discharged in a hollow cone shape from the water discharge means. Means for increasing the liquid film thickness to increase the thickness of the liquid film of discharged wash water;
A sanitary washing device characterized by comprising:   The liquid film thickness enlarging means slows the flow rate of the washing water when flowing out of the liquid film thickness enlarging means than the flow speed of the cleaning water flowing into the liquid film thickness expanding means. 2. The sanitary washing device according to claim 1, wherein a liquid film of the wash water discharged in the hollow conical shape from the water discharge hole is thickened.   The liquid film thickness enlarging means makes a resistance given to the cleaning water when flowing out from the liquid film thickness enlarging means larger than a resistance given to the washing water when flowing into the liquid film thickness enlarging means. The sanitary washing apparatus according to claim 2, wherein the flow rate of the washing water is slowed down. The liquid film thickness enlarging means is a throat that is formed in a cylindrical shape and has a flow path therein.
The throat receives the cleaning water discharged in a hollow conical shape from the water discharging means by the inner wall of the flow path, and the cleaning water is generated by a frictional force generated when the cleaning water passes along the inner wall of the flow path. The sanitary washing apparatus according to claim 2, wherein the flow rate of the sanitary washing apparatus is reduced.   The sanitary washing apparatus according to claim 4, wherein a portion between the water discharging means and the throat is open to the atmosphere. The nozzle is
A water outlet for discharging hollow conical washing water formed by the swirling flow;
Receiving the hollow conical cleaning water discharged from the water outlet, passing the cleaning water along the inner wall, decelerating the cleaning water while maintaining the state of the liquid film, the liquid of the cleaning water An annular portion to increase the thickness of the membrane;
Have
On the downstream side of the annular portion, the water discharge hole for discharging the cleaning water that has passed through the annular portion into the hollow cone shape is provided, and the liquid film of the hollow cone-shaped cleaning water discharged from the water discharge hole is The sanitary washing device according to claim 2, wherein the sanitary washing device is crushed.

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