JP2016079607A - Sanitary washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sanitary washing device capable of reliably forming a water mass at a target point by collecting a large amount of water flow utilizing a catch-up phenomenon.SOLUTION: The sanitary washing device WA is arranged to prevent attenuation of pressure of washing water given by pulsation generating means caused from natural frequency in a water flow passage in a high pressure range higher than a predetermined pressure.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a sanitary washing device that discharges water toward a user's local area.

  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.

  By the way, even if pumping of washing water with a speed difference at the pulsation generating part to generate pulsating water discharge, there may be a case where a sufficient catch-up phenomenon does not occur and a water mass cannot be formed. found.

  In order to cause a catch-up phenomenon, water is discharged at a faster speed than the preceding water flow, but if the preceding water flow velocity is slow, it takes a relatively long time to land, so the speed of the water flow that can be caught up Doesn't have to be that fast. On the other hand, in the region where the speed of the preceding water flow is high, the time required for landing is relatively short, so the speed of the water flow to catch up in that short time must be considerably faster than when the preceding flow velocity is slow. I must. However, in such a region where the flow velocity is fast, there is a problem in that when the water flow to be caught up catches up with the preceding water flow, the spout spouts and splashes remarkably, thereby hindering the catch-up phenomenon.

  The present invention has been made in view of such problems. The purpose of the present invention is to reliably form a water mass when a large amount of water is collected by catching up to form a large water mass and land. An object of the present invention is to provide a sanitary washing device that can perform the above.

  In order to solve the above-mentioned problems, a sanitary washing device according to the present invention is a sanitary washing device that discharges water toward a user's local part, and is directed to a user's local part from a water discharge hole formed in a nozzle, and a bubble. Cleaning water supply means for ejecting cleaning water mixed with pulsation, pulsation generating means for pumping the cleaning water with a speed difference to the cleaning water supply means, and a water passage connecting the pulsation generating means and the cleaning water supply means And is configured to prevent attenuation due to the natural frequency of the water passage in a high pressure range higher than a predetermined pressure among the pressures applied to the wash water by the pulsation generating means.

  The present inventor notices that the washing water discharged by mixing bubbles becomes difficult to break, and if no bubbles are mixed, the discharge pressure is too strong and the discharged water scatters and the catch-up phenomenon does not occur. It was discovered that even in a high pressure range that exceeds the pressure, it is possible to suppress the scattering and cause a catch-up phenomenon by mixing bubbles. As a result, the present inventors have found that the amount of catch-up water can be increased as compared with the case where bubbles are not mixed, and the pressure increase during landing can be achieved by increasing the flow velocity.

  Based on this idea, we studied to cause a catch-up phenomenon in a high pressure range exceeding a predetermined pressure by mixing bubbles, but in the high pressure range exceeding a predetermined pressure, the speed condition for causing the catch-up phenomenon becomes severe as described above. For this reason, the influence of the natural frequency of the water passage on the water discharge pressure is prominent, and a new problem has been found that the catch-up phenomenon is hindered and the formation of a water mass becomes impossible.

  According to the present invention, it is possible to avoid the pulsation frequency of the wash water pumped with a speed difference and the natural frequency of the water passage from resonating to attenuate the water pressure of the pump wash water. In forming a water mass containing bubbles and landing, the water mass can be reliably formed.

  In the sanitary washing device according to the present invention, vibration that accelerates the wash water is generated in the water passage when the pumped wash water passes, and the vibration is configured to synchronize with the high pressure range. Is also preferable.

  In this preferred embodiment, vibration that accelerates the wash water is generated in the water passage by passing the pumped wash water, and the vibration is configured to synchronize with the high pressure range, so that the amount of catch-up water can be increased. it can.

  In the sanitary washing device according to the present invention, it is also preferable that the vibration peak generated in the water passage is configured to synchronize with the high pressure range.

  In this preferred embodiment, since the peak of vibration generated in the water passage is configured to be synchronized with the high pressure range, the amount of catch-up water can be increased.

  Further, in the sanitary washing device according to the present invention, the washing water supply means temporarily retains the washing water in the vicinity of the water discharge hole, and mixes air in the retained washing water by an ejector effect. Further, it is also preferable that the cleaning water is allowed to strike the channel side wall near the water discharge hole.

  In this preferred embodiment, the cleaning water is temporarily retained in the vicinity of the water discharge hole, and air is mixed into the retained cleaning water by the ejector effect, so that the strength of the water flow entering the retained cleaning water and the retention are retained. The amount of bubbles is determined by the amount of water. When the amount of air bubbles mixed up too much, the air bubbles agglomerate, and one large bubble burst, bursting the water, and the catch-up phenomenon was hindered, making it impossible to form a water mass. The amount of water to be retained can be adjusted to be small by allowing the washing water to strike the channel side wall in the vicinity of the water discharge hole, so that the amount of bubbles mixed in can be adjusted to such an extent that a water mass can be formed.

  According to the present invention, it is possible to provide a sanitary washing apparatus that can reliably form a water mass when collecting a larger amount of water by catching up to form a large water mass and landing.

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 figure which shows typically the state of the washing water discharged from a washing water supply part (nozzle). It is a figure which shows typically the state of the washing water discharged from a washing water supply part (nozzle). It is a figure which shows typically the state of the washing water discharged from a washing water supply part (nozzle). It is a figure which shows typically the state of the washing water discharged from a washing water supply part (nozzle). It is a figure which shows typically the state of the washing water discharged from a washing water supply part (nozzle). In a modification, it is a figure showing typically the state of the washing water discharged from a washing water supply part (nozzle). In a modification, it is a figure showing typically the state of the washing water discharged from a washing water supply part (nozzle). In a modification, it is a figure showing typically the state of the washing water discharged from a washing water supply part (nozzle).

  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 discharging the cleaning water by feeding out the nozzle 18 (including the cleaning water supply unit, hereinafter also referred to as a cleaning water supply unit).

  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 discharging hole 181 (water discharging hole) and a buttocks cleaning water discharging hole 182 (water discharging hole). 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.

  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 warm water cleaning toilet seat as a sanitary cleaning 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 pulsation generating unit 15, and a washing water supply unit 18 including a nozzle. 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 and the pulsation generation unit 15 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.

  The pulsation generator 15 is a part that pulsates the water discharged from the cleaning water supply unit 18 by changing the water pressure of the water fed to the cleaning water supply unit 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 16 (water passage) connected to the washing water supply unit 18, and water pressurized in the cylinder is sent out to the water supply pipe 16 (water passage).

  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 16, and the piston returns from the top dead center to the bottom dead center, and the water flows into the cylinder. The operation is repeated. Accordingly, periodic pressure fluctuations, that is, pulsations are generated in the wash water supplied to the water supply pipe 16.

  The cleaning water supply unit 18 discharges the cleaning water flowing downstream when the electromagnetic valve 14 is opened from the bidet cleaning water discharging hole 181 (water discharging hole) and the buttocks cleaning water discharging hole 182 (water discharging hole).

  FIG. 3 is a diagram schematically showing the state of the cleaning water discharged from the cleaning water supply unit (nozzle) 18. As shown in FIG. 3, the washing water supply unit 18 includes a plurality of bubbles in the washing water, and the washing water is supplied to a height corresponding to the bottom surface of the toilet seat without being aggregated into a single bubble. To reach. By doing in this way, a user can be made to land while maintaining the state where a plurality of bubbles were mixed, and both the feeling of volume felt by the user and the water-saving effect can be achieved.

  More specifically, as shown in FIG. 4, a first water flow with a small number of included microbubbles and a low flow velocity and a second water flow with a large number of included microbubbles and a high flow rate are alternately ejected. (See FIG. 4A). When reaching the bottom surface of the toilet seat, the second subsequent water flow catches up with the first first water flow to form a large water mass containing many microbubbles (see FIG. 4C).

  In this embodiment, in order to generate the catch-up phenomenon as shown in FIG. 4 more reliably, the peak of the drive waveform of the pulsation generator 15 and the peak of the vibration waveform corresponding to the natural frequency of the water supply pipe line 16 are aligned. It is configured. If they are not aligned, the water discharge waveform as shown in FIG. 5A is obtained, and the speed of the second water flow cannot be increased so as to catch up with the first water flow. In this case, the catch-up phenomenon does not occur until the landing position as shown in FIG.

  On the other hand, when the peak of the drive waveform of the pulsation generator 15 and the peak of the vibration waveform corresponding to the natural frequency of the water supply pipe line 16 are aligned, the water discharge waveform as shown in FIG. The speed can be increased sufficiently. In this case, a catch-up phenomenon occurs up to the landing position as shown in FIG.

  The cleaning water supply unit 18 mixes bubbles using the ejector effect. As shown in FIG. 7, the cleaning water supply unit 18 includes a first water discharge unit 183 on the upstream side and a second water discharge unit 185 on the downstream side. An air inlet 184 is provided between the first water discharger 183 and the second water discharger 185. The channel diameter of the second water discharger 185 is formed to be larger than the channel diameter of the first water discharger 183. The water ejected from the first water discharger 183 reaches the second water discharger 185. The water that has reached the second water discharger 185 is temporarily stored in the second water discharger 185, and the water ejected later enters the water discharger 185. Since the water ejected from the first water discharger 183 enters the air suction port 184 while entraining the air, bubble-containing water is formed in the second water discharger 185 and is ejected to the outside.

  The first water discharger 183 is formed with a directing inclined part 183a. Therefore, the water ejected from the first water discharger 183 is directed so as to hit a part of the side surface of the second water discharger 185. In this way, the wash water is temporarily retained in the vicinity of the water discharge hole, and air is mixed into the retained wash water by the ejector effect, so that the strength of the water flow entering the retained wash water and the water to be retained The amount of bubbles is determined by the amount. When the amount of bubbles mixed in is too large, bubbles are aggregated, the bubbles that have grown into one large burst, and the water discharge splatters. Mixing bubbles to such an extent that a small amount of water can be retained with a simple structure by allowing the second water discharge part 185, which is the side wall of the flow path near the hole, to come into contact with each other so that a water mass can be formed. Made it possible to adjust the amount.

  The cleaning water supply unit 18B as a modified example shown in FIG. 8 includes a second water discharge unit 185B provided with an orientation step portion 183b instead of the orientation inclination portion 183a. The swirling flow is generated in the directing step portion 183b, so that the water discharge is drawn, and the same contact state as shown in FIG. 7 can be realized.

  The cleaning water supply unit 18C as a modified example shown in FIG. 9 offsets the center lines of the first water discharging unit 183 and the second water discharging unit 185, and realizes a single contact state similar to that shown in FIG. ing.

  The cleaning water supply unit 18 </ b> D as a modification shown in FIG. 10 includes a bypass water discharge unit 186 in the second water discharge unit 185. By supplying water from the bypass water discharger 186 to the second water discharger 185, similarly to the one-sided effect shown in FIG. 6, by reducing the water film, the amount of bubbles mixed in can be reduced and the same effect can be achieved. .

10: Operation unit 12: Control unit 14: Solenoid valve 15: Pulsation generation unit 18: Nozzle (washing water supply unit)
183: 1st water discharging part 183a: Inclined part 184: Air inlet 185: 2nd water discharging part CB: Toilet bowl CBa: Bowl surface WA: Sanitary washing apparatus

Claims (4)

A sanitary washing device that discharges water toward a user's local area,
A cleaning water supply means for ejecting cleaning water mixed with bubbles from a water discharge hole formed in the nozzle toward a local part of the user,
Pulsation generating means for pumping wash water with a speed difference to the wash water supply means;
A water passage connecting the pulsation generating means and the washing water supply means,
Hygiene characterized by being configured to prevent damping caused by the natural frequency of the water passage in a high pressure range higher than a predetermined pressure among the pressure applied to the washing water by the pulsation generating means. Cleaning device.   The vibration of accelerating cleaning water is generated in the water passage when the pumped cleaning water passes, and the vibration is configured to synchronize with the high pressure range. Sanitary washing device.   The sanitary washing device according to claim 2, wherein a peak of vibration generated in the water passage is configured to be synchronized with the high pressure range.   The cleaning water supply means temporarily retains cleaning water in the vicinity of the water discharge hole, and mixes air in the retained cleaning water by an ejector effect. The sanitary washing device according to claim 2 or 3, wherein the washing water is allowed to come into contact with each other.