JP5720986B2 - Sanitary washing device - Google Patents

Description

  The present invention relates to a sanitary washing device for washing a local part of a human body.

  In such a sanitary washing device, it is possible to reduce the amount of washing water in normal butt washing and bidet washing that require continuous washing with washing water, and to make washing water spouting intermittent There has been proposed a water discharge method that can reduce the problems associated with.

  For example, the sanitary washing device described in Patent Document 1 below includes a pressure generating unit that intermittently generates a pressure higher than a water discharge pressure obtained from a water supply source. By comprising in this way, the washing water discharge at a high pressure is generated intermittently, and the amount of washing water can be reduced during normal local washing.

JP 2001-90151 A

  The conventional technology described above has a basic configuration for generating pulsating water discharge, and is useful as a device that provides a certain water-saving effect. In particular, a technique for increasing the apparent volume by mixing air bubbles into the water discharge is useful for further enhancing the water-saving effect.

  However, the present inventors have clarified that there is a limit to the capability of the conventional technology when pursuing more water-saving performance. Since the conventional technique is to generate the water saving effect to the maximum by mixing bubbles in the pulsating spout water, it is necessary to further increase the amount of mixed bubbles in order to further increase the water saving effect.

  However, if the amount of air bubbles mixed in is increased in order to further improve the water-saving effect, the water discharge density decreases excessively, and the load when landing on the human body is reduced too much. In some cases, it may not be possible to secure sufficient cleaning ability.

  The present invention has been made in view of such problems, and an object of the present invention is a sanitary washing device for washing a local part of a human body, which can achieve both a water-saving effect and a washing ability at a higher level. It is to provide a cleaning device.

  In order to solve the above-described problems, a sanitary washing device according to the present invention is a sanitary washing device that discharges water toward a local area of a user, a nozzle having a water discharge hole for discharging water, and the water discharge hole Water discharge means for discharging water toward the user's local area, and air adjustment means for adjusting the amount of air mixed in the water discharged by the water discharge means. The water discharge means is configured to discharge pulsating water from the water discharge hole by feeding water pulsating with periodically varying pressure toward the water discharge hole. The air adjusting means adjusts so that the amount of air mixed into the water discharged from the nozzle is minimized at a peak of pulsation in which the pressure of water discharged from the nozzle is high.

  In the present invention, the water discharge means is configured to discharge pulsating water from the water discharge hole by sending water that pulsates with periodically varying pressure toward the water discharge hole. Water can be discharged so that there are alternating portions where the water travel speed is high and portions where the water is traveling. Accordingly, the discharged water forms a water tank by a catch-up phenomenon due to a speed difference. In the present invention, since air is mixed into the water discharged from the nozzle to discharge the bubble-containing water, the apparent volume of the water tank formed after being discharged can also be increased by the bubble-containing water. .

  Furthermore, the air adjusting means in the present invention adjusts so that the amount of air mixed into the water discharged from the nozzle is minimized at the pulsation peak where the pressure of the water discharged from the nozzle is high. In this way, at the peak of pulsating water discharge, the amount of air mixed into the water discharge is minimized, so that a water tank with high density and high speed is formed and heads for the local area to be landed. . Such a water tank with high density and speed can land on the local area, making it possible to land with a high impact force, and it is possible to reliably remove the dirt adhering to the local area by the impact force of the landing water. it can.

  In this way, in the present invention, the water tank made of bubble-mixed water whose apparent volume is increased and the water tank having high density and speed can be mixed and landed locally, so that the amount of water used is suppressed. Therefore, it is possible to achieve both landing on a large area and landing with high detergency.

  In the sanitary washing device according to the present invention, the nozzle is discharged so that a first water tank with a large amount of air mixed in and a second water tank with a small amount of air mixed in are alternately formed. The speed of the second water tank is higher than the speed of the first water tank, and the first water tank that travels first passes through the second water tank that travels later to the local area of the user. It is also preferable to reach.

  In this preferred embodiment, the first water tank with a large amount of air mixed in penetrates the second water tank with a small amount of air mixed in, so that the cross-sectional area perpendicular to the traveling direction of the first water tank can be enlarged. Therefore, the landing area of the first water tank can be expanded, and both water saving and wide area cleaning can be achieved.

  Further, in the sanitary washing device according to the present invention, the air adjusting means temporarily retains water in the vicinity of the water discharge hole, and mixes air into the retained water by an ejector effect, from the nozzle. The ejector effect is temporarily reduced by adjusting so that the pressure of the discharged water exceeds the predetermined pressure, and the air to the water discharged from the nozzle is temporarily reduced by temporarily reducing the ejector effect. It is also preferable to minimize the amount of contamination.

  In this preferred embodiment, since the bubble mixed water is generated by the ejector effect, a water tank having an apparent volume can be formed and landed locally without using a means such as an air pump. Furthermore, the ejector effect is temporarily reduced by adjusting the pressure of the water discharged from the nozzle to exceed a predetermined pressure, and the water discharged from the nozzle is temporarily reduced by the temporary reduction of the ejector effect. Therefore, the second water tank with a small amount of air can be formed by adjusting the ejector effect. In this way, air bubbles mixed water is generated using the ejector effect, and the amount of air mixed in can be reduced by adjusting the ejector effect with a simple method of adjusting the water discharge pressure. It is possible to achieve both water saving and wide area cleaning.

  ADVANTAGE OF THE INVENTION According to this invention, it is a sanitary washing apparatus which wash | cleans the local part of a human body, Comprising: The sanitary washing apparatus which can make a water-saving effect and washing | cleaning capability compatible in higher dimensions can be provided.

It is a perspective view which shows the warm water washing toilet seat containing the sanitary washing apparatus which is embodiment of this invention. It is a block block diagram which shows the functional structure of the sanitary washing apparatus which is embodiment of this invention. It is a perspective view which shows the external appearance of the nozzle shown in FIG. FIG. 3 is a plan view sectional view of the bidet cleaning swirl chamber shown in FIG. 2. FIG. 3 is a side sectional view of the bidet cleaning swirl chamber shown in FIG. 2. It is side view sectional drawing which shows a mode that the washing water was supplied to the bidet washing | cleaning swirl chamber shown in FIG. 5 from the 1st water supply path. In the case shown in FIG. 6, it is a figure which shows the relationship between discharged water pressure and the amount of air mixing. In the case shown in FIG. 6, it is a figure which shows typically the state of the water discharged from the water discharge hole. It is a figure which shows typically the state of the water discharged from the water discharging hole at the time of suppressing a water discharging pressure.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In order to facilitate the understanding of the description, the same constituent elements in the drawings will be denoted by the same reference numerals as much as possible, and redundant description will be omitted.

  A warm water cleaning toilet seat including a sanitary cleaning device according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic perspective view showing a warm water cleaning toilet seat including a sanitary cleaning device according to an embodiment of the present invention. As shown in FIG. 1, a warm water cleaning toilet seat WA (sanitary cleaning device) is used by being placed in a toilet CB. The warm water washing toilet seat WA includes a main body WAa, a toilet seat WAb, a toilet lid WAc, and an operation unit 10. The operation unit 10 is provided with an operation panel, and an operation signal corresponding to the operation of the operation panel is transmitted to the main body WAa.

  For example, if a portion of the operation panel labeled “Large cleaning” or “Small cleaning” is operated, an operation signal instructing to perform a cleaning operation corresponding to “Large cleaning” or “Small cleaning” is transmitted to the main body WAa. Is done. When such an operation signal is transmitted, the main body WAa executes an operation of flowing cleaning water to the bowl surface CBa in order to clean the bowl surface CBa of the toilet bowl CB.

  Also, for example, when an operation panel labeled “wet washing” or “bidet washing” is operated, an operation signal instructing to discharge cleaning water corresponding to “wet washing” or “bidet washing” is issued. It is transmitted to the main body WAa. When such an operation signal is transmitted, the main body WAa performs an operation of extending the nozzle 18 and discharging cleaning water.

  The nozzle 18 discharges washing water in order to wash the vicinity of the user's anus, the vicinity of the vaginal opening, and the vicinity of the urethral opening seated on the toilet seat WAb. The nozzle 18 is provided with a bidet cleaning water discharge hole 181 and a buttocks cleaning water discharge hole 182. When the user operates the portion of the operation panel labeled “wet cleaning”, cleaning water is discharged from the buttocks cleaning water discharge hole 182. In addition, when the user operates the portion of the operation panel indicated as “bidet cleaning”, cleaning water is discharged from the bidet cleaning water discharge hole 181.

  In the present embodiment, there are two types of “bidet cleaning”, and “spot cleaning” and “wide cleaning” can be switched. When “spot cleaning” of “bidet cleaning” is operated, water discharged from the bidet cleaning water discharge hole 181 is concentrated in a relatively narrow range. On the other hand, when “wide cleaning” of “bidet cleaning” is operated, water is discharged from a bidet cleaning water discharge hole 181 over a relatively wide range.

  Subsequently, a mechanism for switching the mode of the cleaning water discharged from the nozzle 18 will be described with reference to FIG. FIG. 2 is a block configuration diagram showing a functional configuration of a hot water cleaning toilet seat as a sanitary cleaning device, and is a diagram mainly illustrating a mechanism for switching the mode of cleaning water discharged from the nozzle 18. As shown in FIG. 2, the warm water washing toilet seat WA includes an operation unit 10, a control unit 12, an electromagnetic valve 14 (water discharge means), a pulsation generation unit 15 (air adjustment means), and a flow path switching valve 16 ( Water discharge means) and a nozzle 18 (a part of which also functions as air adjustment means). In FIG. 2, when each block is connected by a broken line, it indicates that there is a signal exchange, and when each block is connected by a solid line, it indicates that there is a flow of water.

  The operation unit 10 is a part that receives a user's operation and transmits an operation signal corresponding to the operation to the control unit 12 when executing the bidet cleaning function and the buttocks cleaning function. The control unit 12 is a part that outputs a predetermined operation signal to the electromagnetic valve 14, the pulsation generation unit 15, and the flow path switching valve 16 in accordance with an operation signal input from the operation unit 10. The control unit 12 includes an arithmetic element such as a CPU, a storage element such as a RAM and a ROM, and an interface for transmitting and receiving signals.

  In accordance with an operation signal input from the control unit 12, the electromagnetic valve 14 separates the valve body from the valve seat and causes the cleaning water supplied from the water supply source to flow downstream, or causes the valve body to contact the valve seat. It is a valve that plays the role of stopping the wash water supplied from the water supply source. A flow path switching valve 16 is provided on the downstream side of the electromagnetic valve 14.

  The pulsation generator 15 is a part that varies the water pressure of the water fed to the nozzle 18 and pulsates the water discharged from the nozzle 18. Specifically, the pulsation generator 15 is provided with a cylinder having a columnar space. A piston is provided in the cylinder. An O-ring is attached to the piston. A space defined by the piston and the cylinder is a pressurizing chamber. The cylinder is provided with a cleaning water inlet. And the water supply pipe line connected from the solenoid valve 14 is connected to the washing water inlet so that water can flow into the pressurizing chamber. An umbrella packing is provided at the washing water inlet to prevent backflow to the water supply pipe. The cylinder is provided with a washing water outlet. The washing water outlet is connected to a water supply pipe line connected to the flow path switching valve 16, and water pressurized in the cylinder is sent out to the water supply pipe line.

  When the motor of the pulsation generator 15 is energized by a command from the controller 12, the rotation shaft rotates and the piston reciprocates up and down. That is, the piston moves from the bottom dead center to the top dead center, pressurizes the water and pushes it toward the water supply line, and the piston returns from the top dead center to the bottom dead center, causing water to flow into the cylinder. The operation is repeated. As a result, periodic pressure fluctuations, that is, pulsations occur in the wash water supplied to the water supply pipeline.

  The flow path switching valve 16 is a valve that switches the flow path so that the wash water that flows when the electromagnetic valve 14 is opened flows into any of the plurality of flow paths provided on the downstream side. In the case of this embodiment, the first water supply path 185, the second water supply path 186, and the third water supply path 187, which are three flow paths, are connected to the downstream side of the flow path switching valve 16. Therefore, the flow path switching valve 16 causes the cleaning water flowing from the electromagnetic valve 14 side to flow through one of the first water supply path 185, the second water supply path 186, and the third water supply path 187. The valve body is switched. A nozzle 18 is provided on the downstream side of the flow path switching valve 16.

  The nozzle 18 flows downstream when the electromagnetic valve 14 is opened, and the washing water distributed by the flow path switching valve 16 is washed with bidet washing water discharge (water discharge for washing the vicinity of the vaginal opening and the vicinity of the urethral opening) or Switching to buttocks washing water discharge (water discharge for washing the vicinity of the anus) and discharging. A bidet cleaning swirl chamber 183 in which a bidet cleaning spout hole 181 for communicating with a bidet cleaning spout is connected to the nozzle 18 and a butt cleaning swirl chamber in which a butt cleaning spout hole 182 for performing butt cleaning spout is communicated. 184 is formed.

  A first water supply channel 185 and a second water supply channel 186 are connected to the bidet cleaning swirl chamber 183. A third water supply channel 187 is connected to the buttocks cleaning swirl chamber 184. Therefore, when the cleaning water is caused to flow through the first water supply path 185 or the second water supply path 186 by the flow path switching valve 16, the cleaning water is supplied to the bidet cleaning swirl chamber 183 and discharged from the bidet cleaning water discharge hole 181. On the other hand, when the cleaning water is caused to flow into the third water supply channel 187 by the flow path switching valve 16, the cleaning water is supplied to the buttocks cleaning swirl chamber 184 and discharged from the buttocks cleaning water discharge hole 182.

  Next, the nozzle 18 will be described with reference to FIG. FIG. 3 is a perspective view showing the nozzle 18 and shows a state in which the outermost cover is removed. As shown in FIG. 3, the nozzle 18 includes a nozzle body 28a and a pipe line member 28b. A first water supply path 185, a second water supply path 186, and a third water supply path 187 are provided so as to extend from one end side of the nozzle body 28a. A pipe member 28b is disposed on the other end side of the nozzle body 28a. The pipe member 28b is formed with a bidet cleaning water discharge hole 281a and a buttocks cleaning water discharge hole 282a. The bidet cleaning water discharge hole 281a is connected to the bidet cleaning water discharge hole 181 shown in FIG. 1, and the butt cleaning water discharge hole 282a is connected to the butt cleaning water discharge hole 182 shown in FIG.

  In the present embodiment, when the flow path is switched to the first water supply path 185 by the flow path switching valve 16, the first water discharge mode that is spot water discharge is executed. Moreover, when the flow path is switched to the second water supply path 186 by the flow path switching valve 16, the second water discharge mode which is wide water discharge is configured to be executed. In this embodiment, the change of the water discharge mode between spot water discharge and wide water discharge is performed by changing the form of the bidet cleaning swirl chamber 183 in which the bidet cleaning water discharge hole 281a is formed, the first water supply path 185 to the bidet cleaning swirl chamber 183, and This is realized by the connection form of the second water supply path 186.

  Next, the configuration of the bidet cleaning swirl chamber 183 and the connection configuration of the first water supply path 185 and the second water supply path 186 to the bidet cleaning swirl chamber 183 will be described with reference to FIGS. 4 and 5. FIG. 4 is a plan view sectional view of the bidet cleaning swirl chamber 183, and is a cross-sectional view at a level where the first water supply path 185 and the second water supply path 186 are connected to the bidet cleaning swirl chamber 183. FIG. 5 is a side sectional view of the bidet cleaning swirl chamber 183 and is a sectional view of a portion passing through the center of the bidet cleaning water discharge hole 281a.

  As shown in FIG. 4, a swivel cylinder 183 a is provided in the bidet cleaning swirl chamber 183. The swivel cylinder 183a is formed as a spire-like cylinder whose upper end is conical. Therefore, when cleaning water is supplied into the bidet cleaning swirl chamber 183, a swirling flow is generated around the swirling cylinder 183a, and the swirling flow is discharged from the bidet cleaning water discharge hole 281a.

  The first water supply path 185 and the second water supply path 186 have a first inflow center 185 b and a second inflow center 186 b, which are the respective center lines, separated from the center of the bidet cleaning swirl chamber 183 and tangent to the outer periphery of the bidet cleaning swirl chamber 183. It is arranged to approach the direction. The distance d1 between the first inflow center 185b of the first water supply path 185 and the center of the bidet cleaning swirl chamber 183 is greater than the distance d2 between the second inflow center 186b of the second water supply path 186 and the center of the bidet cleaning swirl chamber 183. It is arranged to be shorter. The second water supply path 186 is disposed such that the inner wall on the outer side thereof is along the tangent line of the inner wall on the outer peripheral side of the bidet cleaning swirl chamber 183. Accordingly, the cleaning water supplied from the second water supply path 186 is configured to generate a maximum swirl flow in the bidet cleaning swirl chamber 183.

  Next, the configuration of the pipe line member 28b will be described with reference to FIG. FIG. 5 is a side sectional view of the bidet cleaning swirl chamber 183 and is a sectional view of a portion passing through the center of the bidet cleaning water discharge hole 281a.

  As shown in FIG. 5, the first water supply path 185 and the second water supply path 186 are on the lower end side of the bidet cleaning swirl chamber 183 (the end opposite to the upper end where the bidet cleaning injection hole 281c is formed). It is arranged to be connected. Accordingly, the cleaning water supplied from the first water supply path 185 and the second water supply path 186 is configured to go to the bidet cleaning injection hole 281c while turning around the turning column 183a. The cleaning water supplied from the second water supply path 186 is configured to form a large swirl flow in the bidet cleaning swirl chamber 183, while the bidet cleaning swirl depends on the cleaning supplied from the first water supply path 185. The chamber 183 is configured to generate an extremely small swirling flow.

  A pipe member 28b is disposed on the side of the bidet cleaning swirl chamber 183 where the bidet cleaning injection hole 281c is formed. A raised portion 281d is formed from the nozzle body 28a toward the pipe member 28b. The bidet cleaning injection hole 281c is formed so as to penetrate the raised portion 281d from the bidet cleaning swirl chamber 183.

  A pipe line 281b is formed in the pipe line member 28b. The pipe line 281b is formed so as to penetrate the surface facing the bidet cleaning spray hole 281c from the bidet cleaning water discharge hole 281a. Accordingly, the cleaning water supplied from the first water supply path 185 and the second water supply path 186 and entering the bidet cleaning swirl chamber 183 is injected from the bidet cleaning injection hole 281c and passes through the pipe line 281b to the bidet cleaning water discharge hole 281a. And discharged from the bidet cleaning water discharge hole 281a toward the object to be cleaned.

  Next, a water discharge mode when the cleaning water is supplied from the first water supply path 185 to the bidet cleaning swirl chamber 183 will be described with reference to FIG. FIG. 6 is a cross-sectional side view showing a state in which cleaning water is supplied from the first water supply channel 185 to the bidet cleaning swirl chamber 183.

  As shown in FIG. 6, when the cleaning water is supplied from the first water supply path 185 to the bidet cleaning swirl chamber 183, the swirling component is small, so the cleaning water filling the bidet cleaning swirl chamber 183 is injected into the bidet cleaning jet. Jetted as a straight flow from the hole 281c to the pipe 281b. Many granulated water droplets WFg are formed around the water flow jetted as a straight flow from the bidet cleaning jet hole 281c. The water droplet WFg collides with the inner wall of the pipe 281b and is decelerated. The decelerated water droplet WFg fills the inside of the pipe 281b, and a straight flow jetted from the bidet cleaning injection hole 281c enters the filled portion. Due to the rush of the straight flow, the air AF introduced from the gap between the raised portion 281d of the nozzle main body 28a and the pipe member 28b is entrained, and the spot water discharge WFsa in which the bubbles Ba are mixed is formed by the ejector effect. The spot water discharge WFsa travels in the pipe 281b and is discharged from the bidet cleaning water discharge hole 281a to a relatively narrow range.

  Next, the relationship between the water discharge pressure and the air mixing amount when the pulsation generator 15 is driven to perform pulsating water discharge will be described with reference to FIG. (A) of FIG. 7 is a graph showing the water discharge pressure, and shows the pressure fluctuation of the water fed into the bidet cleaning water discharge hole 281a. FIG. 7B is a graph showing the amount of air contained in the water discharge when the water discharge pressure is varied.

  As shown in FIG. 7A, in the present embodiment, the water discharge pressure is varied so that the peak of the water discharge pressure exceeds the threshold pressure Vt. In general, the amount of air mixed into the water discharge varies with the variation in the water discharge pressure, and the amount of air mixed in increases as the water discharge pressure increases, and decreases when the water discharge pressure decreases. However, when the peak of the water discharge pressure is changed so as to exceed the threshold pressure Vt as shown in the figure, the air mixing amount is remarkably reduced while the threshold pressure Vt is exceeded, as shown in FIG. doing.

  With reference to FIG. 8, the variation mechanism of the air mixing amount when the water discharge pressure varies will be described. As shown in FIG. 7A, when the peak of the water discharge pressure is lower than the threshold pressure Vt, the first water tank WFm containing many bubbles is generated and discharged by the ejector effect described with reference to FIG. Is done. On the other hand, when the peak of the water discharge pressure is changed so as to exceed the threshold pressure Vt, the ejector effect described with reference to FIG. 6 does not occur, and the second water tank WFn that does not contain much bubbles is generated and discharged.

  If the peak of the water discharge pressure exceeds the threshold pressure Vt, the reason why the second water tank WFn that does not contain much bubbles is generated is considered as follows. As described with reference to FIG. 6, the water jetted from the bidet cleaning spray hole 281c temporarily stays in the vicinity of the bidet cleaning water discharge hole 281a, and the jet water enters the water that stays there. A first water tank WFm containing a large amount of bubbles is generated.

  However, when water is ejected at a water discharge pressure that exceeds the threshold pressure Vt, the water does not stay temporarily in the vicinity of the bidet cleaning water discharge hole 281a, and the water discharge is discharged as it is as the second water tank WFn. Therefore, as shown in FIG. 8B, following the first water tank WFm containing many bubbles, the second water tank WFn containing less bubbles is discharged.

  As shown in FIG. 8C, when the second water tank WFn having a high density and speed is discharged, it catches up with the first water tank WFm having a low density and speed. Further, as shown in FIG. 8D, the second water tank WFn that has caught up with the first water tank WFm penetrates the first water tank WFm. By penetrating the second water tank WFn, a part of the first water tank WFm becomes splash Sb, and the landing area can be further expanded.

  Thus, the second chickenpox WFn having a high density and speed is generated and landed on the local area, so that it is possible to create a physical strength, and the user can obtain a sense of irritation. In addition, the first water tank WFm and the droplet Sb having a low density and a large volume are generated and landed on the local area, so that the washing area is widened, and the user can obtain a feeling of volume (plentiful feeling).

  In the above description, the water discharge from the bidet cleaning water discharge hole 281a has been described, but the same applies to the water discharge from the buttocks cleaning water discharge hole 282a.

  For reference, pulsating water discharge when the water discharge pressure is not increased to the threshold pressure Vt will be described with reference to FIG. 9A shows a water discharge mode when pulsating water discharge is not performed, and FIG. 9B shows a pulsation water discharge mode when the water discharge pressure is not increased to the threshold pressure Vt. As shown in FIG. 9B, when the water discharge pressure is not increased to the threshold pressure Vt, only the first water tank WFm having a relatively low density and speed is generated.

  As described above, the warm water cleaning toilet seat WA that is a sanitary cleaning device according to the present embodiment is a sanitary cleaning device that discharges water toward a user's local area, and a bidet cleaning water discharge hole 281a (water discharge hole) that discharges water. ) And a nozzle 18 in which a butt cleaning water discharge hole 282a (water discharge hole) is formed, and an electromagnetic wave that functions as a water discharge means for discharging water from the bidet cleaning water discharge hole 281a and the butt cleaning water discharge hole 282a toward the user's local area. It has a valve 14 and a pulsation generator 15 that functions as an air adjusting means for adjusting the amount of air mixed in the discharged water. The pulsation generator 15 pulsates from the bidet cleaning water discharging hole 281a and the buttocks cleaning water discharging hole 282a by sending water that pulsates with periodically varying pressure toward the bidet cleaning water discharging hole 281a and the buttocks cleaning water discharging hole 282a. It is comprised so that water may be discharged. The pulsation generator 15 adjusts so that the amount of air mixed in the water discharged from the nozzle 18 is minimized at the pulsation peak where the pressure of the discharged water is high.

  In the present embodiment, water that pulsates due to periodic pressure fluctuations is sent toward the bidet cleaning water discharge hole 281a and the buttocks cleaning water discharge hole 282a, thereby pulsating water from the bidet cleaning water discharge hole 281a and the buttocks cleaning water discharge hole 282a. Therefore, it is possible to discharge water so that portions where the traveling speed of water is high and low are alternately present. Accordingly, the discharged water forms a water tank by a catch-up phenomenon due to a speed difference. In the present embodiment, air is mixed into the water discharged from the nozzle 18 to discharge the bubble-containing water. Therefore, the apparent volume of the water tank formed after the discharge is also increased by the bubble-containing water. Can do.

  Furthermore, the pulsation generator 15 in the present embodiment adjusts so that the amount of air mixed into the water discharged from the nozzle 18 is minimized at the pulsation peak where the pressure of the water discharged from the nozzle 18 is high. is there. In this way, at the peak of pulsating water discharge, the amount of air mixed into the water discharge is minimized, so that a water tank with high density and high speed is formed and heads for the local area to be landed. . Such a water tank with high density and speed can land on the local area, making it possible to land with a high impact force, and it is possible to reliably remove the dirt adhering to the local area by the impact force of the landing water. it can.

  As described above, in this embodiment, since the water tank made of bubble-mixed water with an apparent volume increased and the water tank with high density and speed can be mixed and landed locally, the amount of water used can be suppressed. However, it is possible to achieve both landing on a large area and landing with high detergency.

  Further, in the present embodiment, the first water tank WFm having a large air mixing amount and the second water tank WFn having a small air mixing amount are discharged from the nozzle 18 so as to be alternately formed. The speed of the second water tank WFn is higher than the speed of the water tank WFm, and the second water tank WFn that travels later passes through the first water tank WFm that travels first to reach the user's local area.

  Thus, since the second water tank WFn with a small air mixing amount penetrates the first water tank WFm with a large air mixing amount, the cross-sectional area orthogonal to the traveling direction of the first water tank WFm can be enlarged. it can. Therefore, the landing area of the first water tank WFm can be widened, and both water saving and wide area cleaning can be achieved.

  In the present embodiment, the nozzle 18 that partially functions as an air adjusting means temporarily retains water in the vicinity of the bidet cleaning water discharge hole 281a and the buttocks cleaning water discharge hole 282a, and ejects the retained water by the ejector effect. Air is mixed in. The pulsation generating unit 15 as the air adjusting means temporarily reduces the ejector effect by adjusting the pressure of the water discharged from the nozzle 18 to exceed a predetermined pressure, and temporarily reduces the ejector effect. By such a reduction, the amount of air mixed in the water discharged from the nozzle 18 is minimized.

  In this way, since the bubble mixed water is generated by the ejector effect, a water tank having a large apparent volume can be formed and landed locally without using a means such as an air pump. Further, the ejector effect is temporarily reduced by adjusting the pressure of the water discharged from the nozzle 18 so as to be maximized exceeding a predetermined pressure, and the nozzle 18 is discharged by the temporary reduction of the ejector effect. Since the amount of air mixed into water is minimized, the second water tank WFn with a small amount of air mixed can be formed by adjusting the ejector effect. In this way, air bubbles mixed water is generated using the ejector effect, and the amount of air mixed in can be reduced by adjusting the ejector effect with a simple method of adjusting the water discharge pressure. It is possible to achieve both water saving and wide area cleaning.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but 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 10: Operation part 12: Control part 14: Electromagnetic valve 15: Pulsation generation | occurrence | production part 16: Flow path switching valve 18: Nozzle 28a: Nozzle main body 28b: Pipe line member 181: Bidet washing water discharge hole 182: Butt washing water discharge hole 183: Bidet Cleaning swirl chamber 183a: swirling column 184: cleaning swirl chamber 185: first water supply path 185b: first inflow center 186: second water supply path 186b: second inflow center 187: third water supply path 281a: bidet cleaning water discharge hole 281b: Pipe 281c: Bidet washing injection hole 281d: Raised portion 282a: Butt washing water discharge hole AF: Air Ba: Bubble CB: Toilet bowl CBa: Bowl surface Sb: Spray Vt: Threshold pressure WA: Hot water washing toilet seat WAa: Main body WAb: Toilet seat WAc: toilet lid WFg: water droplet WFm: first chickenpox WFn: second chickenpox WFsa: spot water discharge

Claims (2)

A sanitary washing device that discharges water toward a user's local area,
A nozzle formed with water discharge holes for discharging water;
Water discharge means for discharging water from the water discharge hole toward the user's local area,
Air adjusting means for adjusting the amount of air mixed into the water discharged by the water discharging means,
The water discharge means is configured to discharge pulsating water from the water discharge hole by sending water pulsating with periodically varying pressure toward the water discharge hole,
In the vicinity of the water discharge hole, the air adjusting means adjusts so that the amount of air mixed into the water discharged from the nozzle is minimized at the peak of pulsation in which the pressure of water discharged from the nozzle is high . Water is temporarily retained and air is mixed into the retained water by the ejector effect, and the pressure of water discharged from the nozzle exceeds a predetermined pressure and is adjusted so as to be maximized. A sanitary washing apparatus characterized in that the ejector effect is temporarily reduced, and the amount of air mixed into the water discharged from the nozzle is minimized by temporarily reducing the ejector effect . From the nozzle, the first water tank having a large amount of air mixed and the second water tank having a small amount of air mixed are discharged so as to be alternately formed,
The speed of the second water tank is higher than the speed of the first water tank, and the second water tank that travels through the first water tank that travels first reaches the user's local area. The sanitary washing device according to claim 1, wherein the device is a sanitary washing device.

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