TW201623746A - Sanitary washing apparatus - Google Patents

Abstract

An amount of air mixed in a bubble mixture section 18fb is adjusted such that wash water reaches a height corresponding to a bottom surface of a toilet seat before a plurality of bubbles mixed in the bubble mixture section 18fb collect into a single bubble.

Description

Sanitary washing device

The present invention relates to a sanitary washing device for discharging washing water to a part of a user.

In the sanitary washing device described in the following Patent Document 1, the water is supplied to the spout hole while the washing water pressure is pulsating. Then, the amount of water and the flow rate of the washing water are similarly pulsated, and the washing water is discharged so as to cause a pulsation transition between the state of the maximum flow rate and the maximum flow rate to the state of the minimum flow rate and the minimum flow rate. Each of the water discharge portions constituting the water flow is formed in a water spouting form in which the water discharge portion having the maximum flow rate and the maximum flow velocity is combined with the preceding water discharge portion to become a water mass, and the water mass is connected to the subsequent water discharge portion. When the washing feeling of the sanitary washing device is specific to the sense of volume and the sensation, the sanitary washing device described in Patent Document 1 below needs to increase the pulsation amplitude of the washing water pressure if a larger water mass is to be formed. However, if the pulsation amplitude of the washing water pressure is further increased, the maximum flow rate and the spouting portion of the maximum flow rate pass through the preceding spouting portion without causing a catch-up phenomenon.

The sanitary washing device described in Patent Document 2 below is accompanied by The chasing phenomenon caused by the pulsation of the above-described washing water pressure causes bubbles to be mixed in the spit water to form a larger water mass. Although the feeling of the amount is increased when bubbles are mixed in the water mass as described above, it is difficult to increase the irritation feeling because the water mass becomes soft.

Patent Document 1: Japanese Patent Laid-Open Publication No. 2001-90151

Patent Document 2: Japanese Patent Laid-Open Publication No. 2012-127107

In the sanitary washing device described in Patent Document 2, in order to improve the irritation, it is conceivable to increase the pulsation amplitude of the washing water pressure as described above. However, as mentioned in the description of the sanitary washing device described in the above Patent Document 1, if the pulsation amplitude of the washing water pressure is increased, the spouting portion of the maximum flow rate and the maximum flow rate will pass through the preceding spouting portion instead of It will cause a catch-up phenomenon.

However, the inventors of the present invention have made a new insight that the surface energy of the water flow increases when bubbles are mixed in the spit water under certain conditions, so even if the pulsation amplitude of the washing water pressure is increased, the water flow does not The chasing phenomenon occurs when the phenomenon occurs. The present inventors believe that the surface energy of the water flow is proportional to the total area of the gas-liquid interface of the water flow (the outer surface area of the water flow and the sum of the inner surfaces of the water flow and the bubble), and the water flow is less likely to be deformed when the surface energy is increased.

Further, when the air is mixed into the jetting water by the ejector action in the high pressure frequency band in which the washing water pressure is increased, a relatively large and large number of air bubbles are taken in. The large amount of bubbles taken in above may develop into large bubbles due to surface tension fit over time. As mentioned above, the surface energy of the water flow depends on the internal area that is in contact with the inner bubble, so the combination of the bubbles causes The reduction in the internal area causes the surface energy to gradually decrease. Therefore, there is a new problem that causes the water flow to rupture before reaching the user's part.

The present invention has been developed in view of the above-mentioned problems, and it is an object of the present invention to provide a sanitary washing apparatus capable of preventing a high-volume feeling and a high-stimulation feeling even when air is mixed in a jetting water having a pressure fluctuation in a high pressure band. The flow of water is broken before reaching the part of the user.

In order to solve the above problems, the sanitary washing device of the present invention is a sanitary washing device that discharges washing water to a part of a user, and is characterized in that it has a toilet seat for seating by a user during defecation, and a washing nozzle having a water discharge port for discharging the washing water toward a part of the user seated on the toilet seat; the pressure fluctuation portion applies a pressure fluctuation to the washing water supplied to the water spout; the air bubble is mixed with the water generating unit, and is provided in the pressure fluctuation portion. Between the water spout and the water spout, the air bubbles are mixed into the washing water that generates pressure fluctuations by the pressure fluctuation portion. The pressure fluctuation unit is configured to intermittently execute a pressure increasing step of continuously increasing the pressure of the washing water discharged from the water spouting port within a predetermined time width, so that the washing water discharged from the spouting port is chased The water mass formed by the washing water that is first spit out intermittently comes into contact with the user. The bubble-incorporated water-generating unit has an injection port that ejects washing water that generates pressure fluctuations by the pressure-fluctuating portion, and an air introduction port that is provided between the injection port and the spouting port. Produced by washing water sprayed from the aforementioned injection port The raw negative pressure is introduced into the air; the air bubble mixing portion is provided between the air introduction port and the water discharge port, and the washing water sprayed from the injection port is temporarily stored, and the air introduced from the air introduction port is formed. The air-mixing amount adjusting means mixes the washing water to a height corresponding to the bottom surface of the toilet seat before the air bubbles are mixed into the single air bubbles by the plurality of air bubbles mixed in the air bubble mixing portion. It is adjusted by the amount of air mixed by the bubble mixing portion.

According to the present invention, since the pressure fluctuation portion imparts pressure fluctuation to the washing water supplied to the spout, the chasing phenomenon occurs due to the pulsation of the washing water pressure, and a larger water mass can be formed and partially applied to the user. supply. Further, in the bubble-incorporated water generating portion, the air introduced from the air introduction port is mixed into the washing water in a plurality of bubbles, so that the volume can be increased by the bubble to form a larger water mass. In the bubble mixing water generating unit, the air is introduced by the negative pressure generated by the washing water sprayed from the injection port, and the washing water sprayed from the injection port is temporarily stored and introduced from the air introduction port. Since the air is mixed with a plurality of bubbles in the stored washing water, it is not necessary to use an air pump or the like to generate air bubbles.

In addition, in order to bring the washing water to a height corresponding to the bottom surface of the toilet seat before the plurality of air bubbles mixed in the air bubble mixing portion are integrated into the single air bubble, the air mixing amount adjustment for adjusting the amount of air mixed by the air bubble mixing portion is provided. In this manner, even when the water that has been subjected to the pressure fluctuation of the high pressure band by the pressure fluctuation portion is mixed with the air, it is possible to prevent the water flow from being broken before reaching the user's part.

Moreover, in the sanitary washing device of the present invention, the aforementioned empty The gas mixing amount adjusting means is configured to have a larger amount of air mixed in by the bubble mixing portion at the maximum pressure than in the case of the minimum pressure in the pressure increasing step.

The flow rate of the water having a high jetting pressure is also fast, and the time taken from the bubble mixing portion to the height position corresponding to the bottom surface of the toilet seat is short. Therefore, even if a large amount of air is mixed into the water flow having a high jetting pressure, it does not pass through a long period of time in which the bubbles are excessively aggregated. Therefore, by mixing a large amount of air into the water flow having a high jetting pressure, not only the sense of mass but also the amount of feeling can be prevented. The flow of water is broken before reaching the part of the user.

Further, in the sanitary washing apparatus of the present invention, the air mixing amount adjusting means is configured to adjust the amount of air mixed in the air bubble mixing portion so that the washing water discharged from the water spouting port is on the bottom surface of the toilet seat At a considerable height, a state in which a plurality of bubbles are close to each other and a water film between the plurality of bubbles is formed to disappear, that is, a state in which the gas-liquid interface is shared is preferable.

The washing water is at a height corresponding to the bottom surface of the toilet seat, and a plurality of air bubbles are close to each other to form a state in which the water film between the plurality of air bubbles disappears, that is, a state in which the gas-liquid interface is shared, whereby the air bubbles can be made slightly easier. In the deformed state, the local contact with water can prevent the irritating feeling from becoming excessive.

Further, in the sanitary washing apparatus of the present invention, the air mixing amount adjusting means is configured to increase the pressure before the washing water discharged from the spouting port reaches a height corresponding to the bottom surface of the toilet seat. In the step, the washing water that is spit out is used to complete the washing water that is first spit out, and the water flow is broken out from the continuous water flow with the spouting port. good.

Since the chasing phenomenon is completed before the washing water reaches the height corresponding to the bottom surface of the toilet seat, the water is touched before the agitation of the air bubbles caused by the chasing phenomenon occurs, and the gas-liquid interface common state can be formed more reliably.

Further, in the sanitary washing apparatus of the present invention, the air mixing amount adjusting means is configured to temporarily store only the washing water in the bubble mixing portion, and interfere with a part of the periphery of the washing water sprayed from the injection port. And formed as good.

The washing water that has been temporarily stored in the bubble mixing portion is formed by interfering with a part of the peripheral edge of the washing water sprayed from the injection port, so that the amount of the washing water temporarily stored in the bubble mixing portion can be reduced. Further, in the present invention in which air is mixed by the ejector effect, the amount of air incorporation can be reduced. By reducing the amount of air incorporation, it is possible to take in a relatively small and small amount of air bubbles even when air is mixed into the water spout which is subjected to pressure fluctuations in the high pressure band by the action of the ejector. Therefore, it is possible to bring the washing water to a height corresponding to the bottom surface of the toilet seat before the plurality of air bubbles mixed in the bubble mixing portion are aggregated into a single air bubble.

Further, in the sanitary washing device of the present invention, the injection port is formed such that a diffusion angle of the washing water sprayed from the injection port with respect to a central axis of the injection port has a first angle and a first angle The second angle is small.

If the diffusion angle is made equal, when it is desired to interfere only with a part of the periphery of the washing water sprayed from the ejection port, it is necessary to test the non-interference side. The flow path design is carried out in consideration of the diffusion angle and dimensional tolerance of the washed water. Therefore, in this preferred aspect, by forming a region of the second angle in which the diffusion angle of the washing water is small, it is possible to avoid increasing the size of the entire flow path and to obtain a large dimensional tolerance.

Further, the sanitary washing device of the present invention includes a swirling chamber provided on the upstream side of the injection port, and having a cylindrical wall to impart a swirling component to the washing water sprayed from the jetting port, and a swirling chamber water supply path. Provided on the upstream side of the swirling chamber, the washing water is supplied to the swirling chamber, and the inner wall on one end side in the width direction is connected along the tangential direction of the cylindrical wall, and the swirling chamber water supply path is formed as the swirling chamber. The width of the water supply path is larger than the radius of the aforementioned swirling chamber.

In this preferred embodiment, the width of the swirling chamber water supply passage is formed to be larger than the radius of the swirling chamber, so that the flow passage sectional area of the water supply passage can be increased, and the flow rate of the washing water flowing into the swirling chamber can be slowed down. Since the flow rate of the washing water flowing into the swirling chamber can be slowed down, the flow rate of the washing water flowing in the tangential direction can also be reduced to reduce the swirling flow rate. Further, since the flow rate of the washing water flowing in the tangential direction and the washing water flowing in the portion opposite to the tangential direction flows slowly, the swirling flow is not caused when the water flowing toward the injection port merges. disorder.

Further, in the sanitary washing apparatus of the present invention, the angle of connection between the inner wall on the other end side in the width direction of the swirling chamber water supply passage and the cylindrical wall is preferably such that the angle at which eddy current is locally generated is suppressed.

The angle of connection between the inner wall on the other end side in the width direction of the swirling chamber water supply path and the cylindrical wall is, for example, 180 degrees or more and 270 degrees. In the following, it is possible to suppress the occurrence of eddy currents locally, and it is possible to suppress the occurrence of eddy currents and reduce the turbulence of the swirling flow.

Further, in the sanitary washing device of the present invention, it is preferable that no protrusion for rectifying the swirling reflow is provided in the center of the swirling chamber.

In this preferred aspect, the swirling flow rate can be slowed compared to when the center has a rectifying projection.

Further, in the sanitary washing apparatus of the present invention, the swirling chamber water supply passage has a curved portion, and the flow velocity on the side in the width direction is faster than the flow velocity on the other side in the width direction.

Since the curved portion is provided so that the flow velocity on the one side in the width direction is faster than the flow velocity on the other side in the width direction, the washing water having a fast flow velocity can be supplied in the direction along the cylindrical wall of the swirling chamber, and Suppresses the generation of eddy currents and reduces the turbulence of the swirling flow.

According to the present invention, it is possible to provide a sanitary washing apparatus capable of preventing a part of the user from reaching the user even when air is mixed into the water spouting which is subjected to the pressure fluctuation of the high pressure band in order to achieve both high feeling and high irritation. Causes the water to rupture.

10‧‧‧Operation Department

12‧‧‧Control Department

14‧‧‧ solenoid valve

15‧‧‧Flow regulating valve

16‧‧‧ Pressure Fluctuation Department

17‧‧‧Flow path switching valve

18‧‧‧Nozzles (washing water supply department)

CB‧‧‧ Toilet

CBa‧‧‧ basin

WA‧‧‧Sanitary washing device

Fig. 1 is a perspective view showing a warm water washing toilet seat including a sanitary washing device according to an embodiment of the present invention.

2 is a view showing the functionality of a sanitary washing device according to an embodiment of the present invention; Constructed block construction diagram.

Fig. 3 is a partial cross-sectional view schematically showing a structure of a hip water spouting portion of Fig. 2;

FIG. 4 is a view schematically showing a state of the washing water discharged from the washing water supply unit (nozzle).

FIG. 5 is a view schematically showing a state of the washing water discharged from the washing water supply unit (nozzle).

FIG. 6 is a view schematically showing a state of the washing water discharged from the washing water supply unit (nozzle).

FIG. 7 is a view schematically showing a state of the washing water discharged from the washing water supply unit (nozzle).

Fig. 8 is a view showing a structure of a hip water spouting portion and a third flow path of Fig. 2;

Fig. 9 is an enlarged view of the buttocks water discharge portion of Fig. 8;

Fig. 10 is a perspective view of the hip water spouting portion of Fig. 8;

Fig. 11 is a view showing the correspondence relationship between the present cleaning mode and the stored water formation mode.

Fig. 12 is a flow chart showing the operation of the control unit of Fig. 2;

Fig. 13 is a view showing pressure fluctuations applied to the washing water by the pressure fluctuation portion of Fig. 2;

Embodiments of the present invention will be described below with reference to the drawings. For easy understanding of the description, the same constituent elements are marked as much as possible in each figure. The same symbols are given and overlapping descriptions are omitted.

A warm water washing toilet seat including the sanitary washing device according to the embodiment of the present invention will be described with reference to Fig. 1 . Fig. 1 is a schematic perspective view showing a warm water washing toilet seat including a sanitary washing device according to an embodiment of the present invention. As shown in Fig. 1, the warm water washing toilet seat WA (sanitary washing device) is mounted on the toilet bowl CB for use. The warm water washing toilet seat WA includes a main body WAa, a toilet seat WAb, a toilet cover WAc, and an operation unit 10. An operation panel is provided on the operation unit 10, and an operation signal corresponding to the operation of the operation panel can be transmitted to the main body WAa.

For example, when the operation panel displays "large wash" and "small wash", an operation signal for instructing a washing operation corresponding to "large wash" and "small wash" can be transmitted to the main body WAa. At the time of the above operation signal transmission, the main body WAa performs an operation of flushing the surface CBa of the washing water to clean the bowl surface CBa of the toilet bowl CB.

In addition, for example, when the operation panel displays the "shoulder washing" and "cleansing" portions, the main body WAa is sent a washing water corresponding to the "water washing" and "cleansing". Operation signal. When the operation signal is transmitted, the main body WAa performs an operation of extending the nozzle 18 (including the washing water supply unit, hereinafter also referred to as a washing water supply unit) and discharging the washing water.

The nozzle 18 is for discharging the washing water in order to clean the vicinity of the anus of the user seated in the toilet seat WAb or near the vaginal opening or near the urethral opening. The nozzle 18 is provided with a cleansing and washing spout hole 181 (spraying hole) and a buttock washing and discharging water hole 182 (spraying hole). When the user is operating When the portion of the panel that displays "the buttocks are washed" is operated, the washing water is discharged from the buttocks washing spout hole 182. When the user operates the portion of the operation panel that is "cleaned and cleaned", the user washes the washing water from the cleansing and draining water hole 181.

Next, a mechanism for switching the state of the washing water discharged from the nozzle 18 will be described with reference to Fig. 2 . Fig. 2 is a block diagram showing a functional structure of a warm water washing toilet seat as a sanitary washing device. As shown in FIG. 2, the warm water washing toilet seat WA includes an operation unit 10, a control unit 12, a solenoid valve 14, a flow rate adjusting valve 15, a pressure fluctuation unit 16, a flow path switching valve 17, and a washing water supply unit including a nozzle. 18 (bubble mixing water generating unit, air mixing amount adjusting means). In Fig. 2, when the blocks are connected by a broken line, the signal is transmitted and received, and when the blocks are connected by a solid line, the flow of water is indicated.

The operation unit 10 is a portion that accepts an operation of the user and transmits an operation signal corresponding to the operation to the control unit 12 when the cleansing function or the butt washing function is executed. In the present embodiment, the water discharge from the washing water supply unit 18 is provided to start. Stop the "stop", "clean", "butt wash" and "butt (soft)" buttons. Further, a "strong" "weak" button for adjusting the water potential from the washing water supply unit 18 and "1", "2", "3", "4" and "5" for lighting are provided.

The control unit 12 is a portion that outputs a predetermined operation signal to the electromagnetic valve 14, the flow rate adjusting valve 15, the pressure fluctuation unit 16, and the flow path switching valve 17 in accordance with an operation signal input from the operation unit 10. The control unit 12 is provided An arithmetic element such as a CPU, a memory element such as a RAM or a ROM, and an interface for transmitting and receiving signals.

The solenoid valve 14 is a valve for causing the valve body to be detached from the valve seat in accordance with an operation signal input from the control unit 12, to cause the washing water supplied from the water supply source to flow to the downstream side, or to abut the valve body. The valve seat stops the washing water supplied from the water supply source. The flow rate adjusting valve 15 is a valve that regulates the flow rate of the washing water flowing through the electromagnetic valve 14.

The pressure fluctuation unit 16 is a portion that pulsates the water pressure of the water supplied to the washing water supply unit 18 and pulsates the water discharged from the washing water supply unit 18. Specifically, a cylinder having a cylindrical space is provided in the pressure fluctuation portion 16. A piston is provided in the cylinder body. An O-ring is mounted on the piston. The space defined by the piston and the cylinder is a pressurized chamber. A washing water inlet is provided on the cylinder block. Further, the water supply line connected from the flow rate adjusting valve 15 is connected to the washing water inlet, so that water can flow into the pressurizing chamber. An umbrella pad is placed on the wash water inlet to prevent backflow to the water supply line. Further, a washing water outlet is provided in the cylinder. The washing water outlet is connected to the water supply line connected to the flow path switching valve 17, and the water pressurized in the working cylinder is sent to the water supply line.

When the motor of the pressure fluctuation unit 16 is energized in accordance with an instruction from the control unit 12, the rotation shaft rotates to reciprocate the piston up and down. That is, the operation is repeated: the piston moves from the bottom dead center to the upper dead point to pressurize the water and pushes the water supply line; and the piston is reset from the top dead center to the dead center to allow water to flow into the cylinder. As a result, periodic pressure fluctuations, that is, pulsations, occur in the washing water supplied to the water supply line.

The pressure fluctuation unit 16 is configured to intermittently execute a pressure increase step of continuously increasing the pressure of the washing water discharged from the water discharge port within a predetermined time width, and to cause the washing water that is discharged later to catch up from the spout. The water mass formed by the discharged washing water intermittently contacts the part of the user.

The washing water flowing from the pressure fluctuation portion 16 flows into the flow path switching valve 17. The flow path switching valve 17 supplies the washing water to any of the first flow path 18a, the second flow path 18b, the third flow path 18c, and the fourth flow path 18d which will be described later.

The washing water supply unit 18 is a portion that discharges the washing water flowing from the flow path switching valve 17 to the downstream side, and discharges it from the body washing and discharging water hole 181 (spraying hole) and the buttock washing water discharging hole 182 (spraying hole). The washing water supply unit 18 includes a first flow path 18a, a second flow path 18b, a third flow path 18c, a fourth flow path 18d, a body water spouting portion 18e, a hip water spouting portion 18f, and a buttocks (soft) spouting portion 18g.

The first flow path 18a and the second flow path 18b are connected to the body water discharge unit 18e. The third flow path 18c is connected to the buttocks spouting portion 18f. The fourth flow path 18d is connected to the buttocks (soft) spouting portion 18g.

Next, the configuration of the buttocks spouting portion 18f will be described with reference to Fig. 3 . The buttocks spouting portion 18f has a spouting port 18fa, a bubble mixing portion 18fb, an air introduction port 18fc, an injection port 18fd, a swirling chamber 18fe, and a swirling chamber water supply path 18fg.

The injection port 18fd is a portion that ejects the washing water that has generated pressure fluctuations by the pressure fluctuation portion 16 to the spouting port 18fa. The air introduction port 18fc is provided between the injection port 18fd and the spouting port 18fa, and is utilized. The portion of the air is introduced by the negative pressure generated by the washing water sprayed from the injection port 18fd.

The air bubble inlet portion 18fb is provided between the air introduction port 18fc and the water discharge port 18fa, and temporarily stores the washing water sprayed from the injection port 18fd, and the air introduced from the air introduction port 18fc is formed into a plurality of bubbles and mixed therein. Part of the wash water.

The swirling chamber 18fe is a portion provided on the upstream side of the injection port 18fd and having a cylindrical wall to impart a swirling component to the washing water sprayed from the injection port 18fd. The swirling chamber water supply passage 18fg is provided on the upstream side of the swirling chamber 18fe, and supplies the washing water to the swirling chamber 18fe, and connects the inner wall on one end side in the width direction to the tangential direction of the cylindrical wall.

FIG. 4 is a view schematically showing a state of the washing water discharged from the washing water supply unit (nozzle) 18. As shown in FIG. 4, the washing water supply unit 18 causes the washing water to contain a plurality of air bubbles, and the washing water reaches a height corresponding to the bottom surface of the toilet seat before the plurality of air bubbles are condensed into a single air bubble. Thereby, the user can be brought into contact with the state in which a plurality of air bubbles are mixed, and the user feels the sense of volume and the water saving effect.

In (A) of Fig. 4, when a cross section of the water flow is observed, a large number of small bubbles are mixed in a large amount, and the surface energy is large and the water flow is not easily broken. In (B) of FIG. 4, a state in which the small bubbles are slightly agglomerated and the water film between the small bubbles disappears is the interface common state. In the present embodiment, the water flow reaches the height corresponding to the bottom surface of the toilet seat in this state. Although the state of (C) of FIG. 4 does not occur in actual use, it may already have local contact with the user, but if it is assumed that the water flow remains in this state, Continued advancement will become a state in which small bubbles are condensed into one large bubble.

More specifically, as shown in FIG. 5, the first water flow having a small number of microbubbles and having a low flow velocity and the second water flow having a large number of microbubbles and having a high flow velocity are alternately ejected (see FIG. 5 (A). )). At the time of reaching the bottom surface of the toilet seat, the second water flow that follows will catch up with the first water flow that has occurred, and form a large water mass containing a large number of fine bubbles (see FIG. 5(C)).

As shown in FIG. 6(A), although the water flow is surrounded by fine bubbles in a state in which they are separated from each other, they are then split as shown in FIG. 6(B), and the microbubbles are in contact with each other to share the interface. As described above, by forming a gas-liquid interface in which the bubbles share a common interface, the gas-liquid interface is reduced, and the water mass can be softened without breaking the water mass. Therefore, the water discharge pressure can be increased to generate larger water. The group also eased the stimulation of spitting.

The washing water supply unit 18 mixes air bubbles by the ejector effect. FIG. 7 shows a state in which air bubbles are mixed in the buttocks spouting portion 18f of the washing water supply unit 18. As shown in Fig. 7, in the buttocks spouting portion 18f, an air introduction port 18fc is provided between the injection port 18fd and the spouting port 18fa. A bubble mixing portion 18fb is provided between the air introduction port 18fc and the water discharge port 18fa.

The flow path of the bubble mixing portion 18fb is formed to be larger than the flow path of the injection port 18fd. The water sprayed from the injection port 18fd reaches the bubble mixing portion 18fb. The water that has reached the bubble mixing portion 18fb is temporarily stored in the bubble mixing portion 18fb, and the water that has been ejected later protrudes into the water. Since the water ejected from the ejection port 18fd protrudes from the air introduction port 18fc, air bubbles are mixed in the bubble mixing portion 18fb and discharged to the outside.

An orientation inclined portion 18fh is formed on the ejection opening 18fd. Therefore, the water ejected from the ejection port 18fd is oriented to come into contact with the side surface of a part of the bubble mixing portion 18fb. Since the washing water is temporarily stored in the vicinity of the spout hole as described above, and the air is mixed into the stored washing water by the ejector effect, it is possible to prevent the air bubbles from being excessively mixed, thereby increasing the spouting pressure and increasing the catching water flow. Make the water mass larger.

In addition, the amount of water is reduced by the contact with a part of the side surface of the bubble mixing portion 18fb, and the thickness of the water film formed by the water in contact with the side surface of the bubble mixing portion 18fb is changed. Thin, will reduce the amount of air bubbles mixed.

As described above, in the present embodiment, in order to allow the washing water to reach a height corresponding to the bottom surface of the toilet seat before the plurality of air bubbles mixed in the air bubble mixing portion 18fb are integrated into the single air bubble, the air mixing portion 18fb is mixed. The amount of air is adjusted. Therefore, the air mixing amount adjusting means of the present invention is configured by interacting the respective portions of the washing water supply unit 18.

In the present embodiment, the amount of air mixed in the bubble mixing portion 18fb at the time of the maximum pressure is larger than the minimum pressure in the pressure increasing step. The flow rate of the water having a high jetting pressure is also fast, and the time taken from the bubble mixing portion 18fb to the height position corresponding to the bottom surface of the toilet seat (see Fig. 4) is short. Therefore, even if a large amount of air is mixed into the water flow having a high jetting pressure, the time during which the bubbles are excessively aggregated does not pass. Therefore, by mixing a large amount of air into the water flow having a high jetting pressure, not only the sense of mass but also the arrival of the air can be prevented. Part of the person caused the water to rupture before.

In the present embodiment, the amount of air mixed in the bubble mixing portion 18fb is adjusted so that the washing water discharged from the water spouting port 18fa is at a height corresponding to the bottom surface of the toilet seat, and a plurality of air bubbles are close to each other to form a plurality of air bubbles. The state before the water film between the bubbles disappears, that is, the state in which the gas-liquid interface is shared (see Fig. 4). By the washing water at a height corresponding to the bottom surface of the toilet seat, the plurality of air bubbles are brought close to each other to form a state in which the water film between the plurality of air bubbles disappears, that is, a state in which the gas-liquid interface is shared, and the air bubbles can be slightly deformed. The local contact with water can prevent the irritation from being too strong.

In the present embodiment, before the washing water discharged from the spouting port 18fa reaches the height corresponding to the bottom surface of the toilet seat, the washing water that is discharged after the pressure rising step is completed and the first flushing is performed. The water is washed, and the continuous water flow from the spout breaks out the water mass (refer to Figure 5). Since the chasing phenomenon is completed before the washing water reaches the height corresponding to the bottom surface of the toilet seat, the water is touched before the bubble agitation caused by the chasing phenomenon occurs, and the gas-liquid interface common state can be formed more reliably.

In the present embodiment, only the washing water temporarily stored in the bubble mixing portion 18fb is formed to interfere with a part of the peripheral edge of the washing water sprayed from the injection port 18fd (see FIG. 7).

Since only the washing water temporarily stored in the bubble mixing portion 18fb is formed to interfere with a part of the peripheral edge of the washing water sprayed from the injection port 18fd, it is possible to reduce the amount of the washing water temporarily stored in the bubble mixing portion 18fb. The amount, and the air in the air using the ejector effect In the embodiment, the amount of air incorporation can be reduced. By reducing the amount of air incorporation, it is possible to take in a relatively small and small amount of air bubbles even when air is mixed into the water spout which is subjected to pressure fluctuations in the high pressure band by the action of the ejector. Therefore, it is possible to bring the washing water to a height corresponding to the bottom surface of the toilet seat before the plurality of air bubbles mixed by the air bubble mixing portion 18fb are condensed into a single air bubble.

In the present embodiment, the injection port 18fd is formed such that the diffusion angle of the washing water sprayed from the injection port 18fd with respect to the central axis of the injection port 18fd has a first angle (an angle spread to the left side of FIG. 7) and The second angle (the angle of diffusion toward the right side of FIG. 7) that is smaller than the first angle.

When the diffusion angle is equalized, when it is desired to interfere only with a part of the peripheral edge of the washing water sprayed from the injection port 18fd, it is necessary to design the flow path by considering the diffusion angle and the dimensional tolerance of the washing water on the non-interference side. Therefore, by forming a region of the second angle in which the diffusion angle of the washing water is small, it is possible to avoid increasing the size of the entire flow path and to obtain a large dimensional tolerance.

In the present embodiment, the swirling chamber water supply passage 18fg is formed such that the width of the swirling chamber water supply passage 18fg is larger than the radius of the swirling chamber 18fe. Fig. 8 is a plan view showing the hip water spouting portion 18f and the third flow path 18c. Fig. 9 is a partial enlarged view of the buttocks spouting portion 18f. Fig. 10 is a perspective view showing the buttocks spouting portion 18f.

As shown in Fig. 9, the width of the swirling chamber water supply path 18fg is formed to be larger than the radius of the swirling chamber 18fe. Since the width of the swirling chamber water supply path 18fg is formed to be larger than the radius of the swirling chamber 18fe, the supply can be increased. The flow path of the waterway cuts the area and slows down the flow rate of the washing water flowing into the swirling chamber 18fe. Since the flow rate of the washing water flowing into the swirling chamber 18fe can be reduced, the flow rate of the washing water flowing in the tangential direction (the flow direction indicated by the thick arrow line in FIG. 9) can also be reduced, and the swirling flow rate can be slowed down. Further, since the flow rate of the washing water flowing in the tangential direction and the washing water flowing in the portion opposite to the tangential direction flows slowly, the flow of the water toward the injection port 18fd does not cause the cycle. Flow disorder.

In the present embodiment, the connection angle θ between the inner wall 18fgb on the other end side in the width direction of the swirling chamber water supply passage 18fg and the cylindrical wall is configured to suppress the angle at which the eddy current is locally generated. The connection angle θ between the inner wall 18fgb on the other end side in the width direction of the swirling chamber water supply passage 18fg and the cylindrical wall is, for example, 180 degrees or more and 270 degrees or less, thereby suppressing the occurrence of eddy currents locally, thereby suppressing generation. Eddy currents and reduce the turbulence of the swirling flow.

In the present embodiment, a projection for rectifying the swirling reflow is not provided at the center of the swirling chamber 18fe. Therefore, the swirl flow velocity can be slowed down compared to when the center has a rectifying projection.

As shown in FIG. 8, FIG. 9 and FIG. 10, in the present embodiment, the curved portion 18ca is provided so that the flow velocity in the vicinity of the inner wall 18fga on the one end side in the width direction is closer to the inner wall 18fgb flowing on the other end side in the width direction. The flow rate is fast.

Since the curved portion 18ca is provided, the flow velocity on the one side in the width direction is faster than the flow velocity on the other side in the width direction, so that the flow rate can be quickly washed in the direction along the cylindrical wall of the swirling chamber 18fe. Purify water and suppress the generation of eddy currents to reduce the turbulence of the swirling flow.

In the present embodiment, the control unit 12 performs the discharge of the set flow rate selected by the "water potential" of the operation unit 10, which is the water potential selection operation unit, when the "water pressure" of the operation unit 10 is operated. Before the main cleaning mode of the water, the storage water generation mode of the washing water required to discharge the washing water and store the bubble mixing portion 18fb at a set flow rate smaller than the flow rate selected by the water potential selection operation unit is performed. Specifically, as shown in FIG. 11 , for example, when the set water potential of the main cleaning mode is “5”, the set water potential of the stored water generation mode is “3”.

In the present embodiment, as described above, since the stored water generation mode in which the washing water is discharged at a flow rate lower than the set flow rate selected by the user is provided before the main washing mode, a small amount of the remaining in the bubble mixing portion can be stored. Washing water. With this, it is possible to reduce the amount of air mixed in the washing water. Therefore, even when air is mixed into the water spout which is subjected to the pressure fluctuation of the high pressure band, it is possible to suppress the water flow from being broken before reaching the user's part.

The specific operation of the control unit 12 will be described with reference to the flowchart of Fig. 12 . In step S01, the "hip" switch of the operation unit 10 shown in Fig. 2 is turned on by the user.

In step S02 following step S01, the stored water generation mode is started. The control unit 12 outputs, to the flow rate adjusting valve 15, a control signal for discharging the washing water having a water potential smaller than the water potential setting value of the operation unit 10. The control unit 12 outputs a control signal for switching the flow path to the third flow path 18c to the flow path switching valve 17.

In step S03 subsequent to step S02, the control unit 12 outputs a valve opening signal to the solenoid valve 14. In step S04 subsequent to step S03, the control unit 12 determines whether or not a predetermined time has elapsed. If the predetermined time has not elapsed, the determination is repeated, and when the predetermined time has elapsed, the process proceeds to step S05.

In step S05, the control unit 12 outputs, to the flow rate adjusting valve 15, a control signal for discharging the water having a water potential that is one less than the water potential setting value of the operation unit 10. In step S06 subsequent to step S05, the control unit 12 determines whether or not a predetermined time has elapsed. If the predetermined time has not elapsed, the determination is repeated, and when the predetermined time has elapsed, the process proceeds to step S07.

In step S07, the control unit 12 outputs a control signal for discharging the washing water having a water potential corresponding to the water potential setting value of the operation unit 10 to the flow rate adjusting valve 15. In step S08 subsequent to step S07, the control unit 12 outputs a control signal for driving the pressure fluctuation unit 16 to activate the main cleaning mode.

In the present embodiment, the control unit 12 suppresses the operation of the pressure fluctuation unit 16 in the stored water generation mode from the operation of the pressure fluctuation unit 16 in the main cleaning mode.

When the operation of the pressure fluctuation unit 16 in the storage water generation mode is suppressed from the operation of the pressure fluctuation unit 16 in the main cleaning mode, it is possible to reliably store a small amount of the washing water in the bubble mixing portion 18fb in the storage water generation mode. .

In the present embodiment, as shown in FIG. 11, the control unit 12 is configured As the flow rate selected by the water potential selection operation unit (corresponding to the water potential in the main cleaning mode) increases, the flow rate of the washing water discharged in the stored water generation mode also increases.

When the flow rate in the formal cleaning mode is increased, the force for extruding the stored washing water to the outside is also increased. In order to cope with the extrusion force, the water potential of the jet is prevented from completely ejecting the stored washing water outward, and as the flow rate of the main washing mode increases, the flow rate in the storage water forming mode is increased to increase the retained water.

As described with reference to Fig. 12, in the present embodiment, the control unit 12 performs a flow rate in which the flow rate from the stored water generation mode is approached to the flow rate in the main cleaning mode between the stored water generation mode and the main cleaning mode. The phase shift mode (step S05 and step S06 of Fig. 12).

As described above, by performing the phase shift mode in which the flow rate from the stored water generation mode is approached to the flow rate in the main cleaning mode, it is possible to prevent the user from feeling uncomfortable in the flow rate change from the stored water formation mode to the main cleaning mode.

As described with reference to Fig. 12, the control unit 12 starts the operation of the pressure fluctuation unit after the phase transition mode is completed. Thereby, it is possible to prevent the user from feeling uncomfortable in the flow rate change from the stored water formation mode to the main cleaning mode.

The pressure fluctuation unit 16 of the present embodiment is configured to mix a predetermined amount or more of air in a minimum pressure state of all water potentials. In the present embodiment, since the washing water sprayed from the injection port 18fd is utilized The generated negative pressure introduces air, and the washing water sprayed from the injection port 18fd is temporarily stored, and the air introduced from the air introduction port 18fc is mixed with a plurality of bubbles into the stored washing water, so that it is not necessary to use an air pump. Wait until the bubbles are mixed into the water. In the present embodiment, as shown in FIG. 13, when a predetermined amount or more of air (the lowest water pressure at which air can be mixed) is mixed in the lowest pressure state of all the water potentials, even if the water is mixed into the water that is subjected to the pressure fluctuation. When the air is present, it is also possible to suppress the water flow from being broken when the catching phenomenon occurs.

As shown in Fig. 13, in the present embodiment, the pressure fluctuation portion 16 is configured such that as the water potential increases, the minimum pressure increases. As the water potential is larger, the maximum pressure is also increased, so the amount of air mixed at this time is increased to make the catching water flow hard. Here, since the minimum pressure increases as the water potential increases, the amount of air mixed in the water flow on the side of the catching side increases as the hardness of the water flow on the catching side increases, and the water flow to be chased also changes. hard. As a result, it is possible to more reliably prevent the water flow from being broken when the catching phenomenon occurs in all the water potentials.

18f‧‧‧Hip Hips Department

18fa‧‧‧ spout

18fb‧‧‧ bubble mixing department

18fc‧‧‧air inlet

18fd‧‧‧jet

18fe‧‧‧ whirlpool

18fg‧‧‧Round room water supply road

Claims (10)

A sanitary washing device for discharging washing water to a part of a user, comprising: a toilet seat for seating by a user during defecation; and a washing nozzle having a portion for facing a user seated on the toilet seat a water discharge port for discharging the washing water; the pressure fluctuation portion applies a pressure fluctuation to the washing water supplied to the water spout; the air bubble is mixed with the water generating portion, and is provided between the pressure wave portion and the water spout, and the air bubbles are mixed therein. The pressure fluctuation portion generates a washing water having a pressure fluctuation, and the pressure fluctuation portion is configured to intermittently execute a pressure increasing step of continuously increasing a pressure of the washing water discharged from the water spouting port within a predetermined time width. The water jet formed by the washing water which is discharged from the water spouting port and the washing water which is discharged first is intermittently in contact with the user, and the air bubble is mixed with the water generating unit, and has an injection port for utilizing the aforementioned pressure fluctuation. The washing water that generates pressure fluctuations is sprayed toward the spouting port, and the air introduction port is provided between the jetting port and the spouting port, and is utilized. The air is introduced into the negative pressure generated by the washing water sprayed from the injection port; the air bubble mixing portion is provided between the air introduction port and the water discharge port, and the washing water sprayed from the injection port is temporarily stored. Make the past The air introduced into the air introduction port is formed into a plurality of bubbles and mixed with the stored washing water. The air mixing amount adjusting means causes the washing water to reach before a plurality of air bubbles mixed in the air bubble mixing portion are integrated into a single air bubble. The height corresponding to the bottom surface of the toilet seat adjusts the amount of air mixed in by the bubble mixing portion. The sanitary washing apparatus according to claim 1, wherein the air mixing amount adjusting means is configured to use an amount of air mixed in the bubble mixing portion at a maximum pressure as compared with a minimum pressure in the pressure increasing step. More. The sanitary washing apparatus according to claim 1, wherein the air mixing amount adjusting means is configured to adjust the amount of air mixed in the air bubble mixing portion so that the washing water discharged from the water spouting port is At a height corresponding to the bottom surface of the toilet seat, a plurality of air bubbles approach each other to form a state in which the water film between the plurality of air bubbles disappears, that is, a state in which the gas-liquid interface is shared. The sanitary washing apparatus according to claim 3, wherein the air mixing amount adjusting means is configured such that, before the washing water discharged from the spouting port reaches a height corresponding to a bottom surface of the toilet seat, The washing water which is discharged after the pressure rising step is completed to chase the washing water which is discharged first, and the water mass is scattered from the water flow continuously flowing through the spout. In the sanitary washing apparatus according to the first aspect of the invention, the air mixing amount adjusting means is configured to temporarily store the washing water in the air bubble mixing portion, and to interfere with the washing from the jet port. A part of the circumference of the water is formed. The sanitary washing device according to claim 5, wherein the injection port is formed to have a first angle with respect to a diffusion angle of the washing water sprayed from the injection port with respect to a central axis of the injection port. And a second angle smaller than the first angle. The sanitary washing apparatus according to claim 6, comprising: a swirling chamber provided on an upstream side of the injection port, having a cylindrical wall, and providing a swirling component to the washing water sprayed from the jetting port; The swirling chamber water supply path is provided on the upstream side of the swirling chamber, and the washing water is supplied to the swirling chamber, and the inner wall on one end side in the width direction is connected along the tangential direction of the cylindrical wall, and the swirling chamber water supply path is formed as The width of the swirling chamber water supply passage is larger than the radius of the swirling chamber. The sanitary washing apparatus according to claim 7, wherein the angle of connection between the inner wall on the other end side in the width direction of the swirling chamber water supply passage and the cylindrical wall is configured to suppress an angle at which a vortex is locally generated. A sanitary washing device according to claim 7 of the patent application, In the center of the swirling chamber, no protrusion for rectifying the swirling flow is provided. The sanitary washing apparatus according to claim 7, wherein the swirling chamber water supply passage has a curved portion so that a flow velocity on one side in the width direction is faster than a flow velocity on the other side in the width direction.