JP5720091B2 - 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: Wash water can be discharged from the water discharge hole in the shape of a hollow cone A water discharging means and a granulated water flow are generated, and before the washing water discharged in the hollow cone shape is landed on the human body part, the hollow portion of the washing water discharged in the hollow cone shape is divided into the particles. A granulated water flow generating means for filling with the water flow that has been atomized , and the granulated water flow generating means is configured to fill a hollow portion of the wash water discharged into the hollow conical shape with the granulated water flow. The washing water different from the washing water discharged from the water discharging means is sprayed so that the landing pressure of the landing portion is uniform, and the landing pressure in the landing portion of the washing water is the central portion and the outer peripheral portion. Hygiene characterized by the same or higher at the outer periphery than at the center Kiyoshi is a device.

  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 is in a state in which the hollow part is filled with a granulated water stream (hereinafter referred to as “granulated water stream” for convenience of explanation) before landing on the human body part. Land in a wider area of the human body of the user sitting on the toilet seat.

  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. Moreover, the hollow conical water discharge may land on the human body part in a state where the liquid film is crushed and granulated, or may land on the human body part while remaining in the liquid film state.

  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.

  Furthermore, in the sanitary washing device of the present invention, the contour of the washing range is formed by hollow conical water discharge. That is, the hollow conical water discharge becomes a kind of wall and prevents the cleaning water having a small particle diameter from splashing out of the cleaning area. Therefore, it is possible to prevent the washing water having a smaller washing pressure from reaching the outside of the washing area, and to prevent the portion outside the desired washing area (for example, the thigh) from getting wet unnecessarily. it can. Accordingly, it is possible to solve the problem that the user sitting on the toilet seat feels uncomfortable because the portion outside the desired cleaning area gets wet unnecessarily.

  According to this sanitary washing device, the nozzle is a nozzle used for bidet washing, and the landing pressure at the washing water landing portion is the same at the center portion and the outer peripheral portion, or at the outer periphery than the central portion. High in department. Here, “landing pressure” is a momentum per unit area, and refers to a force that removes, peels off, or floats.

At this time, 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 can meet the desire to wash a wide range at once, and is suitable as a device used by women during menstruation.
Further, according to this sanitary washing device, the granulated water flow generating means fills the hollow portion of the wash water discharged in a hollow conical shape with the granulated water flow so that the landing pressure at the landing portion is uniform. Thus, a fluid different from the washing water is ejected. Therefore, it is possible to control more easily so that the landing pressure and the amount of landing water in the cleaning area are uniform. Therefore, it is possible to surely meet the demand for cleaning a wide range at once. In other words, it is possible to more reliably suppress the occurrence of the hollow portion at the time of landing, and to solve the problem regarding the cleaning performance in the hollow portion.
In addition, the sanitary washing device of the present invention can remove menstrual stains in a shorter time because it can be more easily controlled so that the landing pressure and the amount of landing water in the cleaning area are uniform. It can be floated or washed away in a shorter time. Therefore, the sanitary washing device of the present invention can be surely responded to the desire to wash a wide range at once, and is suitable as a device used by women during menstruation.

Further, the second invention is characterized in that, in the first invention, the amount of landing water in the washing water landing portion is the same in the central portion and the outer peripheral portion, or more in the outer peripheral portion than in the central portion. It is a sanitary washing device.

  According to this sanitary washing device, the nozzle is a nozzle that is used for bidet washing, and the amount of landing water in the landing portion of the cleaning water is the same in the central portion and the outer peripheral portion, or the outer peripheral portion is closer than the central portion. Many in the department. Here, “amount of water landing” is the amount of water landing per unit time, and refers to the power to wash away dirt.

  At this time, 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 the 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 can meet the desire to wash a wide range at once, and is suitable as a device used by women during menstruation.

The third invention is characterized in that, in the first invention, the liquid film wave preventing means for preventing the liquid film wave from being generated in the liquid film of the wash water discharged in the hollow conical shape is further provided. This is a sanitary washing device.

According to this sanitary washing device, the liquid film wave preventing means can prevent the liquid film wave from being generated in the liquid film of the wash water discharged in a hollow conical shape.
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.

  On the other hand, according to the sanitary washing device of the present invention, the liquid film wave preventing means can prevent the liquid film wave from being generated in the liquid film of the wash water discharged in a hollow conical shape. 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. 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.

In a fourth aspect based on the third aspect, the liquid film wave preventing means crushes the liquid film before the liquid film wave is generated in the liquid film of the wash water discharged in the hollow conical shape. This is a sanitary washing device.

  According to this sanitary washing device, the liquid film wave preventing means is generated to crush the liquid film of the hollow conical water discharge before the liquid film wave is generated in the liquid film of the wash water discharged into the hollow conical shape. The diameter of the granulated water stream can be increased. Therefore, 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. 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.

  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.

It is a perspective schematic diagram showing the toilet apparatus provided with the sanitary washing apparatus concerning embodiment of this invention. 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 conceptual schematic diagram which illustrates the discharge form of the wash water discharged from the nozzle of this embodiment. It is a conceptual schematic diagram which illustrates the other water discharge form of the wash water discharged from the nozzle of this embodiment. It is a conceptual schematic diagram which illustrates further another water discharge form of the wash water discharged from the nozzle of this embodiment. 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. It is a cross-sectional schematic diagram showing the nozzle concerning the other specific example of this embodiment. It is a cross-sectional schematic diagram showing the nozzle concerning the other specific example of this embodiment. It is a cross-sectional schematic diagram which illustrates the internal structure of the pressure modulation apparatus of this example. It is a perspective schematic diagram showing the nozzle concerning the modification of this embodiment. It is the upper surface schematic diagram which looked at the nozzle concerning this modification from the upper part. It is a cross-sectional schematic diagram in cut surface AA represented to FIG. It is a cross-sectional schematic diagram showing the nozzle concerning the other specific example of this embodiment. It is the upper surface schematic diagram which looked at the nozzle concerning this modification from the upper part. It is an end surface schematic diagram in cut surface BB represented to FIG.

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 an outline of the state of the wash water discharged from the nozzle of the present embodiment.
FIG. 3 is a graph showing the landing pressure and the amount of landing water in the landing portion of the washing water.
FIG. 4 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 FIG. 2, 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 water discharge means for discharging 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 generates a water flow that is granulated so as to fill the hollow portion of the hollow conical water discharge 510 before the hollow conical water discharge 510 reaches the human body part. A converted water flow generating means is provided. That is, as will be described in detail later, the granulated water flow generating means generates a granulated water flow (hereinafter referred to as “granulated water flow” for convenience of explanation) as shown in FIG. 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 granulated water flow generation means can fill the hollow portion of the hollow conical water discharge 510 with the granulated water flow 520. Here, the diameter of the granulated water flow 520 is, for example, about 1 mm (millimeter), and is larger than a mist having a diameter of, for example, about 10 to 100 μm (micron).

  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. At this time, the hollow conical water discharge 510 may land on the human body part in a state where the liquid film is crushed and granulated, or may land on the human body part while remaining in the liquid film state.

  When the hollow conical water discharge 510 lands on the human body local part, the landing pressure and the amount of the landing water in the landing part of the cleaning water 500 are substantially equal between the center part and the outer peripheral part of the landing part as shown in FIG. The same or as shown in FIG. 4, the outer peripheral 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.

Next, the outline of the water discharge form of the wash water discharged from the nozzle of this embodiment will be described with reference to the drawings.
FIG. 5 is a conceptual schematic view illustrating the water discharge form of the cleaning water discharged from the nozzle of this embodiment.
FIG. 6 is a conceptual schematic view illustrating another water discharge form of the cleaning water discharged from the nozzle of the present embodiment.
FIG. 7 is a conceptual schematic view illustrating still another form of water discharge from the cleaning water discharged from the nozzle of this embodiment.

  In the water discharge form shown in FIG. 5, the hollow conical water discharge 510 is crushed before landing on the human body part, and transitions to the granulated water flow 520. And the granulated water flow 520 lands in a wider area of the human body part. That is, the wash water 500 ejected from the nozzle 410 is filled in the hollow portion by the granulated water flow 520 that has been crushed and transitioned by the hollow conical water discharge 510 itself, and reaches the human body local area. Therefore, the landing pressure and the landing water amount in the landing portion in the water discharge form shown in FIG. 5 are as shown in FIG. The means for crushing the hollow conical water discharge 510, that is, the means for generating the granulated water flow 520 will be described in detail later.

  Further, in the water discharge form shown in FIG. 6, the straight flow 530 is discharged to the central portion of the hollow conical water discharge 510, that is, the hollow portion. The straight flow 530 is crushed before landing on the human body part, and transitions to the granulated water flow 520. That is, the wash water 500 ejected from the nozzle 410 is filled in the hollow portion of the hollow conical water discharge 510 by the granulated water flow 520 that has been transitioned by the straight flow 530 being crushed and landed on the local body part.

  In addition, the form discharged to the hollow part of the hollow conical water discharge 510 is not limited to the straight flow 530 but may be a swirl flow. That is, a swirling flow may be discharged into the hollow portion of the hollow conical water discharge 510, and the swirling flow may be crushed before landing on the human body local part, and may transition to the granulated water flow 520.

  On the other hand, the hollow conical water discharge 510 may land on the human body part in a state where the liquid film is crushed and granulated, or may land on the human body part while remaining in the liquid film state. The means for discharging the straight flow 530 and the means for crushing the straight flow 530 will be described in detail later.

  Further, in the water discharge form shown in FIG. 7, the granulated water flow 520 is discharged into the central portion of the hollow conical water discharge 510, that is, the hollow portion. That is, in the water discharge form shown in FIG. 5, the hollow conical water discharge 510 itself transitions to the granulated water stream 520, whereas in the water discharge form shown in FIG. 6, the straight flow 530 transitions to the granulated water stream 520. In the water discharge form shown in FIG. 7, the granulated water flow 520 is discharged from the nozzle 410 in the hollow portion of the hollow conical water discharge 510. As a result, the wash water 500 sprayed from the nozzle 410 is filled in the hollow portion of the hollow conical water discharge 510 by the granulated water flow 520 discharged from the nozzle 410 and reaches the human body part.

  On the other hand, the hollow conical water discharge 510 may land on the human body part in a state in which the liquid film is crushed and granulated, similar to the water discharge form described above with reference to FIG. You may land on the local area. The means for discharging the granulated water flow 520 from the nozzle 410 will be described in detail later.

  As described above, according to the present embodiment, the cleaning 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 hollow portion is filled with the granulated water flow 520. Then, the user sits on a wider area of the human body part of the user sitting on the toilet seat 200. Here, the cleaning range of the cleaning water 500 (the cleaning area at the time of landing) is, for example, about φ35 to 45 mm. That is, the width of the rising portion shown in FIGS. 3 and 4 corresponds to about 35 to 45 mm, for example.

  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, in the sanitary washing device 100 according to the present embodiment, the outline of the washing range is formed by the hollow conical water discharge 510. That is, the hollow conical water discharge 510 becomes a kind of wall and can prevent cleaning water having a small particle size from splashing outside the cleaning area. Therefore, it is possible to prevent the cleaning water 500 having a lower cleaning pressure from landing on the outside of the cleaning area, and to prevent the portion outside the desired cleaning area (for example, the thigh) from getting wet unnecessarily. Can do. 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.

  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. 4, 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.

  Further, according to the present embodiment, the amount of landing water at the landing portion of the cleaning water 500 is substantially the same at the center portion and the outer peripheral portion of the landing portion as shown in FIG. Alternatively, as shown in FIG. 4, 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. 8 is a schematic cross-sectional view illustrating a nozzle according to a specific example of the present embodiment.
FIG. 9 is a schematic cross-sectional view showing a nozzle according to a comparative example.
FIG. 10 is a schematic cross-sectional view illustrating a modification of the throat.
FIG. 8 is a specific example related to the water discharge form illustrated in FIG. 5, and is a specific example in which the hollow conical water discharge 510 is crushed and transitions to the granulated water flow 520.

  As shown in FIG. 8, the nozzle 410 of this specific example includes a nozzle body 420 and a throat 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.

  Inside the throat 430, a throat flow path 431 through which washing water discharged 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. 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 body channel 421 is connected in the tangential direction of the large-diameter inner peripheral wall 423e of the swirl chamber 423, the wash water flowing into the swirl chamber 423 flows into the large-diameter 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 swirl force, and is discharged into the throat flow path 431 of the throat 430. 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 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 washing 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 becomes slower toward the water discharge hole 433. Accordingly, as shown in FIG. 8, 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.

  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. 8 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 a granulated water flow generating means for generating a water flow that is granulated so as to fill the hollow portion of the hollow conical water discharge 510.

  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. That is, the throat 430 of this specific example functions as an expansion preventing unit that prevents the water discharge diameter of the hollow conical water discharge 510 from expanding.

  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.

  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, as indicated by an arrow A2 in FIG. 8, 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.

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. 9 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 liquid film of the cleaning water passing through the communication passage 425 of this comparative example is thinner 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. 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. 9, 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 particles 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. 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. That is, the throat 430 of this specific example functions as a liquid film wave preventing unit that prevents the liquid film wave from occurring in the hollow conical water discharge 510.

  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 generation of the liquid film wave or to force the hollow conical water discharge 510 to be granulated by the vortex generated inside the throat 430 before the liquid film wave is generated, The diameter of 520 can be made larger. 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.

  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. 10, the washing water flowing through the throat channel has a greater resistance from the spiral groove 435. Receive. More specifically, the speed of the swirl component of the wash water flowing through the throat flow path is maintained, and the speed of the straight component is reduced.

  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.

  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 in the vicinity of the water discharge hole 433 can be increased. Thereby, the hollow conical water discharge 510 discharged from the water discharge hole 433 is more reliably crushed at a position apart from the water discharge hole 433 to some extent.

FIG. 11 is a schematic cross-sectional view showing a nozzle according to another specific example of the present embodiment.
In addition, FIG. 11 is a specific example regarding the water discharge form illustrated in FIG. 5 similarly to the specific example illustrated in FIG. 8, and is a specific example in which the hollow conical water discharge 510 is crushed and transitions to the granulated water flow 520. .

  The nozzle 410 according to this specific example does not have a throat but has a nozzle body 420. The washing water flowing into the swirl chamber 423 swirls in the swirl chamber 423, passes through the communication path 425, and is discharged as a liquid film having a hollow portion at the center, that is, as a hollow conical water discharge 510. That is, in the nozzle 410 of this specific example, one end of the communication path 425 functions as the water discharge hole 426.

  In addition, the sanitary washing device 100 including the nozzle 410 according to this specific example includes a fluid ejection device 460 that crushes the hollow conical water discharge 510 discharged from the water discharge hole 426 on the upstream side of the nozzle 410. The fluid ejection device 460 is, for example, a pump that can generate a liquid flow or an airflow. In the nozzle body 420, an ejection flow path 461 through which a liquid flow or an air flow supplied from the fluid ejection device 460 passes is provided. One end of the ejection channel 461 is connected to the fluid ejection device 460, and the other end functions as an ejection hole 463 that ejects a liquid flow or an air current supplied from the fluid ejection device 460. Other structures are the same as those of the nozzle 410 according to the specific example described above with reference to FIG.

  As shown in FIG. 11, the nozzle 410 according to this specific example injects the liquid flow or airflow supplied from the fluid injection device 460 via the injection flow path 461 from the injection hole 463 and discharges water from the water discharge hole 426. It can be made to collide with the hollow conical water discharge 510. According to this, the hollow conical water discharge 510 discharged from the water discharge hole 426 is crushed by the liquid flow or air flow injected from the injection hole 463 and transitions to the granulated water flow 520.

  That is, the fluid ejection device 460 of this specific example functions as a granulated water flow generating unit that generates a water flow that is granulated so as to fill the hollow portion of the hollow conical water discharge 510. In addition, the fluid ejection device 460 of this specific example functions as an expansion preventing unit that prevents the water discharge diameter of the hollow conical water discharge 510 from expanding. In addition, the fluid ejection device 460 of this specific example functions as a liquid film wave preventing unit that prevents the liquid film wave from occurring in the hollow conical water discharge 510.

  According to this specific example, by colliding the liquid flow or the air flow with the hollow conical water discharge 510, the hollow conical water discharge 510 is crushed, so that the crushing position can be controlled more reliably. As a result, the cleaning water can be landed more accurately in the desired cleaning range. Further, with respect to other effects, the same effects as those described above with reference to FIGS.

FIG. 12 is a schematic cross-sectional view showing a nozzle according to still another specific example of the present embodiment.
FIG. 13 is a schematic cross-sectional view illustrating the internal structure of the pressure modulation device of this example.
12 is a specific example related to the water discharge form illustrated in FIG. 5 as in the specific example illustrated in FIG. 8, and is a specific example in which the hollow conical water discharge 510 is crushed and transitions to the granulated water flow 520. .

  The nozzle 410 according to this specific example does not have a throat and has a nozzle main body 420, like the specific example nozzle 410 described above with reference to FIG. The washing water flowing into the swirl chamber 423 swirls in the swirl chamber 423, passes through the communication path 425, and is discharged as a liquid film having a hollow portion at the center, that is, as a hollow conical water discharge 510. That is, in the nozzle 410 of this specific example, one end of the communication path 425 functions as the water discharge hole 426.

  Further, the sanitary washing device 100 including the nozzle 410 according to this specific example includes the pressure modulation device 470 in the middle of the nozzle main body flow path 421. The pressure modulation device 470 can pulsate the flow of water in the nozzle body flow path 421 and pulsate the cleaning water discharged from the water discharge holes 426. Other structures are the same as those of the nozzle 410 according to the specific example described above with reference to FIG.

Here, an example of the internal structure of the pressure modulation device 470 will be described with reference to the internal structure illustrated in FIG.
As described above, the pressure modulator 470 can pulsate the flow of water in the nozzle main body flow path 421. 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 nozzle body channel 421.

  As shown in FIG. 13, the pressure modulation device 470 is provided in a cylinder 471 connected to the nozzle body flow path 421, a plunger 472 provided to be able to advance and retreat inside the cylinder 471, and the plunger 472. It includes a check valve 473 and a pulsation generating coil 474 that moves the plunger 472 back and forth 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 nozzle main body flow path 421 (when the pressure of the water in the nozzle main body flow path 421 is changed), the plunger is controlled by controlling the excitation voltage flowing through the pulsation generating coil 474. 472 is moved forward and backward in the axial direction (upstream / downstream) of the cylinder 471.

  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 nozzle body channel 421 on the downstream side. In other words, when the plunger 472 moves from the plunger original position to the downstream side, the water in the nozzle body channel 421 on the upstream side 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 nozzle body channel 421 is constant when the plunger 472 operates.

  Thereafter, when returning to the original position, the washing water flows into the cylinder 471 through the check valve 473. Therefore, in the next movement of the plunger 472 on the downstream side, a certain amount of washing water is sent again to the downstream nozzle body channel 421. In this way, the pressure modulation device 470 can pulsate the flow of water in the nozzle body channel 421.

  According to this specific example, since the pressure modulation device 470 can give pulsation to the wash water discharged from the water discharge hole 426, the hollow conical water discharge 510 discharged from the water discharge hole 426 is liquidated by the pulsation. Cracks occur in the direction across the membrane. As a result, the hollow conical water discharge 510 transitions to a granulated water stream 520 having a larger diameter. That is, the pressure modulation device 470 of this specific example functions as a granulated water flow generating unit that generates a water flow that is granulated to fill the hollow portion of the hollow conical water discharge 510. In addition, the pressure modulation device 470 of this specific example functions as an expansion preventing unit that prevents the water discharge diameter of the hollow conical water discharge 510 from expanding. Further, the pressure modulation device 470 of this specific example functions as a liquid film wave preventing unit that prevents the liquid film wave from occurring in the hollow conical water discharge 510.

  According to this, since the hollow conical water discharge 510 discharged from the water discharge hole 426 is crushed in the direction crossing the liquid film by the pulsation given by the pressure modulator 470, the diameter of the granulated water flow 520 is more large. Therefore, it is possible to further increase the landing pressure and the amount of landing water in the landing section. 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, with respect to other effects, the same effects as those described above with reference to FIGS.

FIG. 14 is a schematic perspective view illustrating a nozzle according to a modified example of the present embodiment.
FIG. 15 is a schematic top view of the nozzle according to this modification as viewed from above.
FIG. 16 is a schematic cross-sectional view taken along the cutting plane AA shown in FIG.
In the schematic perspective view shown in FIG. 14, for convenience of explanation, the internal structure is also appropriately represented by a solid line.

  The nozzle 410 according to this modification has a nozzle body 420. A swirl flow channel 427 and a straight flow channel 428 are provided in the nozzle body 420. As shown in FIG. 15, the swirl flow 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. 15, the straight flow 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 the same as those of the nozzle 410 according to the specific example described above with reference to FIG.

  Since the swirl flow channel 427 is connected to the tangential direction of the large-diameter inner peripheral wall 423e of the swirl chamber 423, the wash water that has passed through the swirl flow channel 427 and flowed into the swirl chamber 423 has a large-diameter inner peripheral wall 423e. And it turns along the inclined inner peripheral wall 423f. This is as described above with reference to FIG. On the other hand, since the straight flow 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 flowing into the swirl chamber 423 through the straight flow channel 428 is Water is discharged from one end of the communication path 425, that is, the water discharge hole 426 without turning.

  Therefore, according to this modification, when the cleaning water is caused to flow into the swirl chamber 423 only through the swirl flow channel 427, the hollow conical water discharge 510 having a larger swirl force can be discharged from the water discharge hole 426. . Further, when the nozzle 410 according to this modification has the throat 430 shown in FIG. 8, the hollow conical water discharge 510 discharged from the water discharge hole 433 transitions to the granulated water flow 520. Therefore, in this case, a wider range can be quickly cleaned at a time.

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

According to this, it is possible to clean a narrower range than the case where the cleaning water flows into the swirl chamber 423 only through the swirl flow channel 427. That is, the user can intensively clean the portion to be cleaned as desired.
Therefore, according to this modification, the user appropriately changes the ratio between the flow rate of the cleaning water passing through the swirl flow channel 427 and the flow rate of the cleaning water passing through the straight flow channel 428. It is possible to switch between a cleaning mode in which a wider range is cleaned at a time and a cleaning mode in which a narrower range is more focused.

  In addition, when the nozzle 410 according to the present modification includes the throat 430, it is more preferable to provide a gap between the nozzle body 420 and the throat 430 as illustrated in FIG. According to this, by taking air into the throat flow path 431 through the gap, it is possible to more easily form a water discharge mode in a cleaning mode in which a narrower range is preferentially cleaned.

FIG. 17 is a schematic cross-sectional view showing a nozzle according to still another specific example of the present embodiment.
FIG. 18 is a schematic top view of the nozzle according to this modification as viewed from above.
FIG. 19 is a schematic end face view taken along the cutting plane BB shown in FIG.
In the schematic perspective view shown in FIG. 17, the internal structure is also indicated by a solid line as appropriate for convenience of explanation.
17 to 19 are specific examples of the water discharge form illustrated in FIGS. 6 and 7, and the wash water discharged into the hollow portion of the hollow conical water discharge 510 is crushed and transitions to the granulated water flow 520. A specific example is a specific example in which the granulated water flow 520 is discharged in the hollow portion of the hollow conical water discharge 510.

  The nozzle 410 of this specific example includes a nozzle body 420 as shown in FIG. Inside the nozzle body 420 are a first nozzle body channel 421a and a second nozzle body channel 421b through which wash water supplied from a water source (not shown) passes, and a first swirl chamber capable of generating a swirl flow. 423a and a second swirl chamber 423b. As shown in FIG. 18, the first nozzle body channel 421a and the second nozzle body channel 421b are connected in a tangential direction to the first swirl chamber 423a and the second swirl chamber 423b, respectively. Yes. The first nozzle body channel 421a and the first swirl chamber 423a are provided above the second nozzle body channel 421b and the second swirl chamber 423b.

  At the center of the first swirl chamber 423a, a projecting portion 424a that generates a swirl flow with a more stable swirl force is provided. In addition, a first communication path 425a connected to the first swirl chamber 423a is provided above the first swirl chamber 423a. One end of the first communication path 425 a functions as a first water discharge hole 426 a that discharges the cleaning water that has passed through the first communication path 425 a to the outside of the nozzle body 420. On the other hand, a second communication path 425b is provided above the second swirl chamber 423b. As shown in FIG. 19, one end of the second communication path 425b is connected to the second swirl chamber 423b, and the other end is a second water discharge hole 426b provided through the protruding portion 424a. Function.

  Since the first nozzle body channel 421a is tangentially connected to the first swirl chamber 423a, the cleaning that has flowed into the first swirl chamber 423a through the first nozzle body channel 421a. Water swirls in the first swirl chamber 423a. Then, the wash water swirled in the first swirl chamber 423a passes through the first communication path 425a while maintaining swirl force, and is discharged from the first water discharge hole 426a. At this time, since the washing water discharged from the first water discharge hole 426a maintains the turning force, it is discharged as a liquid film having a hollow portion at the center, that is, as the hollow conical water discharge 510.

  On the other hand, since the second nozzle body channel 421b is tangentially connected to the second swirl chamber 423b, it flows through the second nozzle body channel 421b and flows into the second swirl chamber 423b. The washed water swirls in the second swirl chamber 423b. Then, the wash water swirled in the second swirl chamber 423b passes through the second communication path 425b while maintaining swirl force, and is discharged from the second water discharge hole 426b.

  At this time, as shown in FIGS. 17 and 19, the length of the second communication path 425b is longer than the length of the first communication path 425a. Therefore, the resistance received by the cleaning water passing through the second communication path 425b is greater than the resistance received by the cleaning water passing through the first communication path 425a. Therefore, the turning force of the washing water discharged from the second water discharge hole 426b is weaker than the turning force of the hollow conical water discharge 510 discharged from the first water discharge hole 426a.

  Therefore, the wash water discharged from the second water discharge hole 426b is discharged as the hollow conical water discharge 510, and the water discharge diameter is larger than the water discharge diameter of the hollow conical water discharge 510 discharged from the first water discharge hole 426a. small. Alternatively, the wash water discharged from the second water discharge hole 426b is discharged as a water discharge in a state where the turning force is sufficiently reduced, that is, as a straight flow as described above with reference to FIG. Thereby, in any case, the wash water discharged from the second water discharge hole 426b is discharged into the hollow portion of the hollow conical water discharge 510 discharged from the first water discharge hole 426a.

  Then, since the swirl force of the wash water discharged from the second water discharge hole 426b is weaker than the swirl force of the hollow conical water discharge 510 discharged from the first water discharge hole 426a, the water discharge from the second water discharge hole 426b. As described above with reference to FIG. 6, the washed water is crushed before landing on the human body part, and transitions to the granulated water stream 520. That is, the hollow conical water discharge 510 discharged from the first water discharge hole 426a is a hollow portion of the hollow conical water discharge 510 due to the granulated water flow 520 that is transitioned by the washing water discharged from the second water discharge hole 426b being crushed. To fill the human body part.

  Alternatively, the wash water discharged from the second water discharge hole 426b is discharged as the granulated water flow 520 as described above with reference to FIG. Then, the granulated water flow 520 discharged from the second water discharge hole 426b is discharged into the hollow portion of the hollow conical water discharge 510 discharged from the first water discharge hole 426a. That is, the hollow conical water discharge 510 discharged from the first water discharge hole 426a is filled with the hollow portion of the hollow conical water discharge 510 by the granulated water flow 520 discharged from the second water discharge hole 426b, and reaches the local body part. Water.

  That is, the second nozzle body channel 421b, the second swirl chamber 423b, and the second communication passage 425b of this specific example generate a water flow that is granulated to fill the hollow portion of the hollow conical water discharge 510. It functions as a granulated water flow generating means. In addition, the second nozzle main body channel 421b, the second swirl chamber 423b, and the second communication passage 425b of this specific example function as an expansion preventing unit that prevents the discharge diameter of the hollow conical water discharge 510 from expanding. To do. In addition, the second nozzle body channel 421b, the second swirl chamber 423b, and the second communication path 425b of the present specific example prevent the liquid film wave from being generated in the hollow conical water discharge 510. Functions as a means.

  According to this specific example, the hollow portion of the hollow conical water discharge 510 is separated from the water discharge for defining the cleaning range, that is, separately from the hollow conical water discharge 510 discharged from the first water discharge hole 426a. Water is discharged for filling with the converted water stream 520. Therefore, it is possible to control more easily so that the landing pressure and the amount of landing water in the cleaning area are uniform. Further, for example, since it is not necessary to provide the throat 430 shown in FIG. 8, the structure of the nozzle 410 can be simplified. Further, with respect to other effects, the same effects as those described above with reference to FIGS.

The embodiment of the present invention has been described. 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, 404 Seating detection sensor, 410 Nozzle, 411 Spout hole, 420 Nozzle body, 421 Nozzle body channel, 421a First nozzle body channel, 421b Second Nozzle body channel, 423 swirl chamber, 423a first swirl chamber, 423b second swirl chamber, 423e large diameter inner peripheral wall, 423f inclined inner peripheral wall, 424, 424a projecting portion, 425 communication path, 425a first communication Passage, 425b second communication passage, 426 water discharge hole, 426a first water discharge hole, 426b second water discharge hole, 427 swirl flow passage, 428 straight flow passage, 430 throat, 431 throat flow passage, 432 taper portion 433 water discharge hole, 435 spiral groove, 460 fluid ejection device, 461 jet flow Passage, 463 injection hole, 470 pressure modulator, 471 cylinder, 472 plunger, 473 check valve, 474 pulsation generating coil, 475 downstream side, 476 return spring, 477 buffer spring, 500 washing water, 510 hollow conical water discharge, 520 Granulated water flow, 530 straight flow, 800 Western-style toilet bowl, 801 bowl

Claims (4)

A sanitary cleaning device that discharges cleaning water from a nozzle hole used for bidet cleaning toward a local body part,
Water discharge means capable of discharging wash water in a hollow conical shape from the water discharge hole;
Before the washing water spouted into the hollow conical shape generates a granulated water flow and reaches the human body local part, the hollow portion of the washing water spouted into the hollow conical shape is subjected to the granulated water flow. Granulated water flow generating means filled with
With
The granulated water flow generating means fills the hollow portion of the wash water discharged in the hollow conical shape with the granulated water flow so that the landing pressure of the water landing portion is uniform from the water discharging means. Injecting cleaning water that is different from the cleaning water discharged,
The sanitary washing apparatus, wherein the landing pressure in the washing water landing part is the same in the central part and the outer peripheral part or higher in the outer peripheral part than in the central part.   2. The sanitary washing apparatus according to claim 1, wherein the amount of water landing in the washing water landing portion is the same in the central portion and the outer peripheral portion, or more in the outer peripheral portion than in the central portion.   2. The sanitary washing apparatus according to claim 1, further comprising a liquid film wave preventing means for preventing a liquid film wave from being generated in the liquid film of the wash water discharged in the hollow conical shape.   4. The sanitary washing apparatus according to claim 3, wherein the liquid film wave preventing means crushes the liquid film before the liquid film wave is generated in the liquid film of the wash water discharged in the hollow conical shape. .

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