JP6489502B2 - Sanitary washing device - Google Patents

Description

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

  In the sanitary washing device, the pulsation generating part and the washing water discharge port are arranged to discharge the pulsating washing water toward the user's local area in order to enhance the washing feeling and washing strength without changing the amount of water used for discharging water. There is known a sanitary washing device including a water discharge section provided and a water passage connecting them. By causing the pulsation generator to intermittently generate a pressure higher than the water discharge pressure obtained from the water supply source, temporal flow rate fluctuations can be added to the water discharged from the discharge port. The discharged cleaning water with fluctuations in the flow rate causes a catch-up phenomenon until it reaches the user's local area, and reaches a certain amount of water mass. Can be obtained.

JP 2001-90151 A

  In order to further increase the feeling of cleaning and the strength of water discharge using the catch-up phenomenon, it is effective to make a large water mass quickly land on the user's local area. Specifically, it is necessary to increase the amount of water in the water mass or increase the flow rate of the water mass.

  Therefore, in the present invention, in order to increase the amount of water in the water mass, or to increase the flow velocity of the water mass, the pulsation frequency generated in the pulsation generating unit is resonated with the natural vibration frequency of the water passage, We focused on how to increase the amount of water that catches up the wash water.

  If resonance is used, the amplitude of the pulsation generated by the pulsation generator and the amplitude due to the natural vibration of the water passage can be prevented from becoming unstable due to the timing depending on the timing. The flow rate of catching up water can be stably increased, and the amount of wash-up water can be increased.

  However, in the water discharge using resonance, the amount of catching-up water increases and becomes an ideal large ball, so that the difference between the ideal catch-up timing and the catch-up water amount becomes more remarkable. For this reason, when the distance from a discharge outlet to a local part changes with how a user sits, the problem that a feeling of washing | cleaning may change a lot by the difference in the distance was discovered.

  Accordingly, an object of the present invention is to provide a sanitary washing device that suppresses a change in washing feeling due to a difference in distance from a discharge port to a local area while stably increasing the flow velocity that catches up using resonance. To do.

  In order to solve the problem, a sanitary washing device according to the present invention is a sanitary washing device that discharges water toward a user's local area, and the cleaning water is directed toward the user's local area from a water discharge hole formed in a nozzle. The cleaning water supply means for ejecting water, the pulsation generating means for pumping the cleaning water with a speed difference to the cleaning water supply means, and the water passage connecting the pulsation generating means and the cleaning water supply means, It is composed of an elastic body whose vibration cycle changes according to the amount of wash water pumped and the temperature of the wash water, and the pulsation is generated by synchronizing the pulsation cycle of the wash water by the pulsation generating means with the vibration cycle of the water channel The pulsation generating means is configured to expand the amplitude of the pulsation of the washing water by the means, and further adjust the pulsation period of the washing water by the pulsation generating means in accordance with the change of the vibration cycle of the water passage. The peak on the low pressure side Operative to begin accelerating flush water late.

  According to the present invention, the pulsation cycle of the washing water by the pulsation generating means is adjusted in accordance with the change in the vibration cycle of the water passage. This suppresses the attenuation of the pulsation amplitude of the discharged wash water due to the vibration of the water passage that changes due to changes in the amount of water and the water temperature, and stabilizes the pulsation of the discharged water by the resonance generated in the water passage. Can be amplified. By doing so, the feeling of washing and the washing strength can be enhanced without changing the amount of washing water.

  Further, the pulsation generating means operates so as to start accelerating the wash water with a delay from the low-pressure peak of the wash water pulsation. In this way, the cleaning water that is not accelerated by the pulsation generating means and is generated in the period before and after the low pressure peak of the pulsation of the cleaning water and has no significant speed difference is discharged in a continuous state. And when the wash water that catches up with the stretched part merges and lands on the local area as a big ball, even if the distance to the local area is different, the stretched part continues to land on the local area If it is between, the change of a washing | cleaning feeling when a catch-up water flow reaches a local part can be suppressed. By doing so, it is possible to suppress the change in the feeling of cleaning due to the difference in the distance from the discharge port to the local part while stably increasing the flow velocity that catches up using resonance.

  Further, in the present invention, it is preferable that the pulsation generated by the pulsation generating means is stopped from the low pressure side peak of the pulsation of the cleaning water until the cleaning water starts to accelerate. By so doing, the wash water can be stabilized at the feed water pressure, and the difference in the speed of the wash water before and after the low pressure peak of the wash water pulsation can be further suppressed.

  Further, in the present invention, it is preferable that the cleaning water is started to accelerate after the low pressure peak of the pulsation of the cleaning water, and the cleaning water is continuously accelerated to the high pressure peak. By doing so, the speed of the catch-up water flow is increased, so that a larger amount of water can contribute to the generation of water mass.

  ADVANTAGE OF THE INVENTION According to this invention, the sanitary washing apparatus which suppresses that a feeling of washing | cleaning changes with the difference in the distance from a discharge outlet to a local part can be provided, improving the flow velocity caught up using resonance stably.

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). It is a figure which shows 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).

  Similarly, when a portion for adjusting the strength of the cleaning water on the operation panel is operated, an operation signal instructing that the amount of cleaning water and the pressure of the cleaning water are changed according to the operation is transmitted to the main body WAa, and the water discharged from the cleaning water is discharged. Is controlled according to the instructions. Similarly, when a portion for adjusting the temperature of the cleaning water is operated, an operation signal is transmitted to the main body WAa to control the discharge of the cleaning water in accordance with the instruction.

  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 more specifically showing the structure from the pulsation generating unit 15 to the washing water supply unit 18 in FIG. The pulsation generating unit and the washing water supply unit are disposed adjacent to each other, and are connected by a water passage between them. In response to the user's operation, the cleaning water supply unit advances the nozzle toward the local area of the user before discharging the cleaning water, and stores the nozzle in the original position after the cleaning is completed. Accordingly, the nozzle is driven back and forth so that the cleaning water discharge hole of the nozzle is directed to the local part of the user only at the time of cleaning.

  The water passage is a water passage through which the wash water to which the cyclic pressure fluctuation is applied by the pulsation generator 15 is passed to the wash water supply unit 18 having a drive unit. The water passage is composed of an elastic body that can be deformed in accordance with the driving of the cleaning water supply unit. As shown in FIG. 4, the water passage has a certain natural frequency, and the elastic modulus changes and the natural frequency also changes when the water temperature and the amount of the washing water change according to the user's setting.

  By applying pressure fluctuations to the discharged water by the pulsation generator 15, the first water flow having a low flow velocity and the second water flow having a high flow velocity are alternately ejected. Thus, after the water is discharged, the later second water flow catches up with the first first water flow, and a large water mass can be made to land on the user.

  In this embodiment, in order to surely generate the catch-up phenomenon of the discharged wash water and to increase the amount of water to catch up, the vibration waveform according to the peak of the drive waveform of the pulsation generator 15 and the natural frequency of the water passage It is configured to align with the peak of. If they are not aligned, the pressure fluctuation generated in the pulsation generating part is hindered by the natural frequency of the water passage, and the amplitude of the water discharge waveform becomes small as shown in FIG. Accordingly, the speed of the second water flow cannot be increased so as to catch up with the first water flow having a low flow velocity. In this case, the catch-up phenomenon does not occur until the landing position, or even if it catches up, it becomes a very small water mass.

  As shown in FIG. 6, 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 passage are aligned, the pressure fluctuation generated in the pulsation generator is not hindered. The speed of the two water streams can be sufficiently increased. As a result, a larger amount of water can be caught up to the landing position, and a larger water mass can be formed.

Further, in the present embodiment, the catch-up phenomenon of the discharged wash water is reliably generated even when the distance to the landing position is deviated, so that the pulsation generation unit 15 is delayed from the low-pressure peak of the wash water pulsation. It is configured to start driving. As shown in FIG. 7, if the drive of the pulsation generating unit is started before the low pressure peak of the pulsation of the wash water, the speed of the first water flow that is caught up does not drop sufficiently, and the amount decreases, so the catch up The distance at which the phenomenon becomes difficult to occur or the ideal catch-up phenomenon occurs is very limited.

As shown in FIG. 8, when the driving of the pulsation generating unit 15 is started after the pulsation generating unit 15 has stopped driving from the low-pressure peak of the washing water pulsation, the speed of the first water flow to be caught up is increased. The water flow can be sufficiently dropped, and a sufficiently slow water flow can be discharged in a stretched state with a temporal width. As a result, the catch-up phenomenon can be continued for a long time, and even if the distance to the local area varies depending on the way the user sits, the catch-up water flow can continue as long as the first continuous water stream continues to land on the local area. It is possible to suppress a change in the feeling of washing when the water reaches the local area.

  A sanitary washing apparatus according to the present invention is a sanitary washing apparatus that discharges water toward a user's local area, and supplies cleaning water that ejects the cleaning water from a water discharge hole formed in the nozzle toward the user's local area. And a 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. The pulsation of the washing water by the pulsation generating means is made of an elastic body whose period of vibration varies depending on the amount of water and the temperature of the washing water, and the pulsation period of the washing water by the pulsation generating means is synchronized with the period of vibration of the water channel And the pulsation cycle of the washing water by the pulsation generating means is adjusted in accordance with the change of the vibration cycle of the water passage.

  According to the present invention, the pulsation cycle of the washing water by the pulsation generating means is adjusted in accordance with the change in the vibration cycle of the water passage. This suppresses the attenuation of the pulsation amplitude of the discharged wash water due to the vibration of the water passage that changes due to changes in the amount of water and the water temperature, and amplifies the pulsation of the discharged water by the resonance generated in the water passage. Therefore, the flow rate difference can be increased without increasing the risk of water leakage, and the amount of catch-up water can be increased. Therefore, the feeling of washing and the washing strength can be enhanced without changing the amount of washing water.

  Further, in the sanitary washing device according to the present invention, when the amount of washing water is increased by the setting changing means for changing the amount and temperature of the water to be discharged based on the setting changed by the operation of the user, and the setting changing means. Or a correction value set according to the setting change by the setting change means when the temperature of the washing water is increased, and a pulsation generating means when the amount of the washing water is increased by the setting change means It is also preferable that the pulsation cycle is adjusted to be shortened based on a preset correction value.

  In this preferable aspect, it is possible to suppress the attenuation due to the vibration of the water passage that changes due to a change in the amount of water or the water temperature that detects the frequency of the vibration of the water passage.

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 (3)

A sanitary washing device that discharges washing water toward the user's local area,
Cleaning water supply means for ejecting the cleaning water from a water discharge hole formed in the nozzle toward a local part of the user;
Pulsation generating means for pumping the 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,
The water passage is made of an elastic body whose period of vibration changes depending on the amount of the wash water pumped and the temperature of the wash water,
By synchronizing the period of the pulsation of the washing water by the pulsation generating means with the period of the vibration of the water passage, the amplitude of the pulsation of the washing water by the pulsation generating means is expanded, and further, the vibration period of the water passage is changed. In addition, it is configured to adjust the period of pulsation of the washing water by the pulsation generating means,
Further, the pulsation generating means operates so as to start accelerating the washing water after a delay from the low-pressure peak of the washing water pulsation.   The pulsation generating means is configured to stop the generation of pulsation by the pulsation generating means from the low pressure side peak of the pulsation of the cleaning water until the cleaning water starts to accelerate. The sanitary washing device according to claim 1.   The pulsation generating means is configured to start accelerating the wash water after a delay from the low-pressure side peak of the pulsation of the wash water and continue to accelerate the wash water to the high-pressure side peak. The sanitary washing device according to claim 1 or 2.

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