JP2001090150A - Human body washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To vary the bodily feeling of washing in a state the washing water flow rate is kept constant. SOLUTION: Water is supplied to a discharge port in the state where the washing water pressure is pulsated. Discharged water portions Wp1-Wp5 every moment form a discharge state as Wp3 having the maximum flow velocity is united to Wp1, 2 to form a water mass, and this water mass is connected to Wp4, 5. The generation of such a water masse can be attained by pulsating the washing water flow in a conduit, and this pulsation induction does not involve the increase or decrease of flow rate. The size or generating period of the water mass is changed, whereby the bodily feeling of washing by the adhesion of the water mass is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human body cleaning apparatus for discharging cleaning water from a water discharge hole to a human body.

[0002]

2. Description of the Related Art A human body washing apparatus of this type, for example, a local washing apparatus for washing a local part of a human body, is rapidly spreading because a human body part can be cleaned with washing water. In recent years, the added value has been increased not only by simply flushing the washing water but also by increasing or decreasing the feeling of irritation and the feeling of the amount of water received from the flushing water.

[0003]

In the conventional local cleaning device, a flow rate regulating valve is provided in a water supply path of the cleaning water, and the flow rate of the cleaning water is adjusted by the flow rate regulating valve. The washing feeling such as the strength of the skin was not obtained. Therefore, it has been difficult to diversify the cleaning experience while keeping the flow rate of the cleaning water constant.

[0004] The present invention has been made to solve the above-mentioned problems, and has as its object to diversify the sensation of washing while keeping the flow rate of washing water constant.

[0005]

In order to solve at least a part of the above problems, a first human body cleaning device of the present invention is a human body cleaning device that discharges cleaning water from a water discharge hole to a human body. A water supply means for supplying cleaning water to the water discharge hole; a bodily sensation setting means for setting a user's cleaning sensation received from the water discharge cleaning water; and a fluctuation that causes a regular fluctuation in the flow of the supplied cleaning water. It is characterized by comprising a generation unit and a fluctuation control unit that controls the fluctuation unit and changes the regularity of the flow fluctuation in accordance with the set cleaning experience.

[0006] In the human body washing apparatus of the present invention having the above-described structure, the flow of the supplied washing water is caused to fluctuate regularly. And make the flush water spout periodic. In addition, the regularity of the fluctuation of the flow of the washing water, for example, the fluctuation cycle, the duty ratio, and the like can be changed according to the set cleaning experience to obtain the set cleaning experience. Therefore, various cleaning feelings can be obtained by variously changing the regularity of the fluctuation. Furthermore, since the change in the regularity of the fluctuation for obtaining the cleaning experience does not involve the adjustment of the flow rate of the washing water, the cleaning experience can be diversified while maintaining the flow rate.

By the way, when the flow of the washing water is changed and the washing water is spouted from the spout hole as in the above-mentioned human body washing apparatus of the present invention, the periodic washing water spout has the following form. The state of the flow of the wash water guided to the water discharge hole is reflected in the wash water discharged from the water discharge hole. If the washing water is guided to the water discharge hole in a uniform flow (continuous flow), the wash water is continuously discharged from the water discharge hole, and a continuous flow of water is formed. However, if the flow fluctuates and the wash water is led to the spout,
A periodic water discharge form reflecting this change is obtained. In the present invention, the flush water is guided to the water discharge hole in a pulsating flow, and the form of water discharged from the water discharge hole has a pulsation such that the pulsating flow reflects and increases or decreases the amount of water discharged. When such a form of water discharge is instantaneously captured, as will be described in detail later, the wash water discharged when the amount of water discharged is large becomes a water lump, and the water discharged when the amount of water discharged from the water lump is small is washed out. It's like being connected by water.

When water is discharged with pulsation in this manner, that is, when the cleaning water is discharged as a pulsating flow, the force applied to the cleaning surface, that is, the instantaneous pressure peak value becomes larger than that of the continuous flow having the same flow rate. Therefore, by using a pulsating flow, the same cleaning intensity can be obtained with a smaller amount of water than in a continuous flow. In addition, since only a small amount of water is required to obtain a desired cleaning strength, there are the following advantages.

In general, in a human body washing apparatus for washing a local part of a human body, that is, a local washing apparatus, in order to alleviate discomfort when the washing water hits a local part, warmed washing water is discharged. Therefore, if the amount of water is small as described above, the capacity of the heat source required to warm the washing water to a predetermined temperature can be reduced, and a high power saving effect can be obtained. In other words, since a small-sized and small-capacity heater can be used,
The size of the water heating mechanism can be reduced, and the size of the device itself can be reduced.

As described above, when the flow of the cleaning water is varied, it is possible to prevent the flow of the cleaning water in the water supply path from being zero. In this way, it is possible to prevent a situation in which the flow of the washing water is interrupted even momentarily, so that it is possible to avoid occurrence of a water hammer in the washing water system including the water supply path, or to generate only a weak water hammer. I can do it. As a result, it is possible to eliminate or reduce problems such as damage or deterioration of devices such as pipes and pipe valves included in the washing water system, abnormal noise such as chattering noise, and inadvertent vibration.

Further, when the flow of the cleaning water is changed without causing the condition of zero flow in the flow of the cleaning water and the cleaning water is discharged from the water discharge hole, the periodic discharge of the cleaning water described above is changed to the flow rate of the cleaning water. Since the zero situation does not occur, the above-mentioned pulsating flow can be obtained more reliably. In other words, the form of water discharge from the water discharge hole has a pulsation such that the amount of water discharge increases or decreases without the condition of zero flow rate.

The cleaning sensation referred to in the present invention is the user's sensation received from the spouting water, not only the intensity of irritation and the amount of water but also the intensity of the enema sensed by the washing water entering the anus. Includes the size of the washing range (washing area), the strength of the feeling of washing being satisfied, such as dirt removed by the spouted washing water, and the like. Further, the feeling obtained by changing the intensity of the irritating feeling or the feeling of water volume or the width of the washing range regularly or irregularly in a time-series manner is also included in the washing sensation of the present invention. Further, a feeling obtained by a stimulus feeling or a feeling of water volume or a time-series transition of a cleaning range being wide and narrow occurring in a fluctuation cycle peculiar to a human body is also included in the cleaning feeling of the present invention.

For this reason, if the regularity of the fluctuations such as the fluctuation frequency and the duty ratio is changed regularly, irregularly or periodically, the state of the flush water discharge in the pulsating flow is changed by the change of the flow fluctuation regularity. Can be changed. Therefore,
The various cleaning sensations based on the pulsating flow of the cleaning water change regularly, irregularly, or fluctuate periodically, which is useful for diversifying the cleaning sensation.

Focusing on the change in the stimulus sensation, there are the following advantages. If the flow fluctuation regularity (for example, fluctuation frequency, duty ratio) is regularly changed, it is possible to give a regular change to the stimulus by applying the flush water spouting in the pulsating flow to a human body local part. Therefore, since the massage effect can be suitably exerted by the regular repetition of the stimulus, the defecation can be promoted. On the other hand, if this stimulus changes irregularly, it is difficult to predict the state of the change in stimulus, so that it is possible to alleviate the monotonous feeling at the time of washing and to promote defecation during unconscious local washing as described later. Can be achieved.

In addition, the above-mentioned feeling of washing sufficiency can be regarded as a physical property of the washing power for removing dirt. According to the present invention, the washing power of the washing machine can be improved by changing the regularity of the flow fluctuation. Diversification can also be achieved.

The human body washing apparatus of the present invention having the above-described configuration can also adopt the following modes. That is, under the condition that the regularity of the fluctuation of the flow is the same, the fluctuation generating means sets the water discharge state change based on the wash water discharge in the state of the flow of the wash water in which the fluctuation occurs as a stimulus change by the human body. In order not to recognize it, it is possible to have a fluctuation inducing means for inducing the fluctuation of the flow.

Thus, as described above, the regularity of the fluctuation of the water discharge state change based on the flush water spouting in the pulsating flow and the fluctuation of the flow for the flush water spouting in the pulsating flow is the same. Under certain circumstances, the human body can be prevented from recognizing a stimulus change. For example, in a situation where the fluctuation frequency and the duty ratio are the same, it is possible to prevent the human body from recognizing that the water is a pulsating flow based on the fluctuation frequency or the duty ratio as a stimulus change. Therefore, the washing water is spouted by the pulsating flow, so that the water is in the spouting state in which the water mass is connected as described above, and the human body does not feel that the water mass is hitting the human epidermis one after another. Fluctuations can occur in the flow. For this reason, even if the washing water is spouted in the pulsating flow, the user can be given a feeling that the washing water is spouted in a continuous flow. Therefore, the washing water spouting with the pulsating flow realized by the present invention can be suitably used for ordinary ass washing and bidet washing where continuous washing with washing water is required, and in that case, discomfort or discomfort is felt. Never give.

Further, since the regular fluctuation of the flow of the cleaning water can occur independently of the adjustment of the flow rate of the cleaning water, the flow rate of the cleaning water can be reduced independently of the induction of the fluctuation. Therefore, even if the flow rate of the washing water is reduced, the above various washing sensations based on the pulsating flow of the washing water can be obtained, so that the effectiveness of water saving can be further improved.

In order to induce the human body not to recognize the change in the water discharge state based on the discharge of the wash water in the pulsating flow, the following method can be adopted. If the cycle of the flushing water spouting in the pulsating flow is about 0.3 seconds, the human body can relatively clearly recognize the stimulus change caused by receiving the flushing water spouting in the pulsating flow. It is preferable that the cycle of the pulsating flow of the wash water, that is, the fluctuation of the flow of the wash water for causing such water discharge occurs in a short cycle of about 0.2 seconds or less. Wash water spouting in pulsating flow is about 3H
If the frequency is lower than z, the human body can clearly recognize the stimulus change, and if the frequency exceeds this frequency, it cannot be recognized as the stimulus change. That is, there is a dead zone (dead zone frequency) when recognizing a stimulus change.
Therefore, in order to prevent the human body from recognizing the change in the water discharge state, it is preferable that the above-mentioned regular fluctuation of the flow of the washing water is caused to occur at a frequency of about 5 Hz or more included in the dead band frequency. It is preferable to cause this change at the frequency of the commercial power supply, because the control of the device for causing such change becomes easy.

In this case, the meaning of preventing the human body from recognizing a stimulus change as referred to in the present application is to intentionally prevent the human body from recognizing the stimulus change. Therefore, when compared with massage washing in which the human body recognizes any stimulus change (for example, stimulus change based on a temperature change or a flow rate change) in order to promote convenience during local washing,
Although they differ in that the stimulus change is not recognized, they are common in that intentional water discharge control is performed. That is, the stimulus change referred to in the present invention is a stimulus change inevitably occurring in washing water spouting or continuation of washing water spouting in any form of washing water spouting. Frequency that occurs just inevitably
It does not include stimulus changes in the cycle.

By the way, the location of the washing water (washing area)
For example, in the case of local irrigation, local areas such as an anus and a female part are used, but these local parts are delicate epidermis parts and may be hypersensitive to stimuli due to hemorrhoidal disease or physiology. Moreover, the degree of hypersensitivity differs depending on the local area. Therefore, instead of fixing the above-mentioned dead zone region to a frequency region of about 5 Hz or more, the lowest frequency can be adjusted according to the local part to be cleaned. Furthermore, in the low frequency region of the dead band region, the user does not usually recognize the stimulus change in local washing, but the stimulus change in the washing water spouting in this low frequency region due to hemorrhoidal disease or physiology. May occur slightly. Therefore, the low frequency region can be set as a boundary region of the dead zone, and a frequency region higher than the boundary region can be set as a certain dead zone. In order to ensure that recognition of a stimulus change does not occur, the following method may be used. That is, the above-described boundary area is set to about 5 Hz.
To about 60 Hz or about 80 Hz, and a frequency region exceeding the boundary region of this frequency region is defined as a certain dead zone.

The above-mentioned fluctuation generating means for generating the above-mentioned fluctuation is provided by a cylinder forming a part of the water supply path, and reciprocating in the cylinder. , A solenoid valve for reciprocatingly driving the plunger, excitation means for exciting the electromagnetic solenoid, and a check valve provided in the cylinder to allow the passage of washing water downstream. Having the following. With this configuration, the plunger is reciprocated in the cylinder through the excitation control of the electromagnetic solenoid, whereby a pulsation is caused in the flow of the cleaning water, and the cleaning water can be pumped in a pulsating flow state.

Further, since the check valve is provided only on the downstream side and the check valve is not provided on the upstream side of the cylinder, the flush water is supplied into the cylinder at the time of the pulsating flow by pressure regardless of the moving state of the plunger. And constantly pump the washing water. Therefore, even without using a special configuration or plunger movement control, it is possible to prevent a situation in which the flow rate is zero when the washing water is pumped by the pulsating flow.

The variation control means controls the excitation means to change the excitation frequency of the electromagnetic solenoid. The excitation control means controls the excitation means to change the duty ratio of the electromagnetic solenoid. And at least one of the second changing means.

In this case, the first changing means may be configured to change the excitation frequency to be reduced as the stimulating feeling becomes stronger, depending on the setting of the stimulating feeling. The excitation frequency can be reduced and changed as much as possible.

The second changing means may change the duty ratio according to the setting of the stimulating sensation to increase the duty ratio as the stimulating sensation increases, or may change the duty ratio as the stimulating sensation increases according to the setting of the water sensation. Can be increased or the duty ratio can be increased and changed as the cleaning area increases, depending on the setting of the cleaning area. According to these, the washing water spouting in the pulsating flow through the excitation frequency control and the duty ratio control of the electromagnetic solenoid,
Various cleaning experiences can be obtained.

Further, the second change means may change the duty ratio when the level of the water discharge temperature is set as the washing feeling. In this way, by changing the contact time of the cleaning water, different cleaning feelings can be given even at the same water discharge temperature. Alternatively, the temperature difference due to the variation of the hot water means can be absorbed by controlling the duty ratio. Alternatively, it is possible to cope with a shortage of the capacity of the hot water means.

Further, the fluctuation generating means is provided in a water supply path of the washing water, and is connected to the air mixing section, which is formed so that air can be mixed into the water supply path from outside, and
And air mixing means for causing air to fluctuate in pressure or flow rate, forcibly mixing air from the aeration unit, and causing the regular variation in the flow of washing water in the aeration unit. it can. In this case, since the pressure or the flow rate fluctuates and the air is forcibly mixed into the cleaning water from the aeration unit, the flow of the cleaning water fluctuates, so that the fluctuation can be easily caused. Fluctuations in the flow of the washing water are caused by the incorporation of air, and since the air has compressibility, a situation in which the flow of the washing water has a zero flow rate due to the incorporation of air is unlikely to occur, which is also useful for suppressing water hammer.

[0029] In this case, the air mixing section may be located in the vicinity of the water discharge hole. In this case, after the flow of the cleaning water fluctuates due to the forced mixing of air, the cleaning water is discharged immediately. it can. Therefore, there is no need to attenuate the fluctuation of the flow of the washing water caused by the air inadvertently and to discharge the washing water.

[0030] The fluctuation generating means may include an interrupting means for interrupting the flow of the washing water at a frequency of about 5 Hz or more in a water supply path leading to the water discharge port, and controlling the fluctuation controlling means to control the interrupting means. Then, there may be provided means for changing the frequency in accordance with the set cleaning feeling. In this case, the water discharged from the water discharge hole becomes the flush water discharge in an intermittent flow, and the frequency is the above-mentioned dead band frequency of about 5 Hz or more. Then, the frequency of the intermittent flow can be changed according to the set cleaning experience, and the set cleaning experience can be obtained. For this reason, various cleaning sensations can be obtained by variously changing the frequency of the intermittent flow within a range of about 5 Hz or more. Furthermore, since the frequency of the intermittent flow for obtaining the cleaning experience does not require adjustment of the flow rate of the washing water, the cleaning experience can be diversified while maintaining the flow rate.

In addition, since the intermittent flow at the dead band frequency of about 5 Hz or more is used, the user receiving the flush water spouting in the intermittent flow does not feel that the flush water is intermittently hitting the human epidermis. Can be. For this reason, even in the case of the flush water spouting in the intermittent flow, which is a form of intermittent flushing, the user can be given a feeling as if the flush water spouting is performed in a continuous flow. Therefore,
The above-mentioned intermittent flow of washing water spouting can be suitably used for ordinary ass washing and bidet washing where continuous washing with washing water is required, without giving any discomfort or discomfort at that time. .

As a preferred embodiment of such an intermittent means,
Any means that can make intermittent flow at the above frequency,
Various aspects can be taken, for example, it can be realized by an on-off valve for opening and closing the water supply path, a flow type electromagnetic pump, and the like, and the amount of water that increases or decreases due to intermittent
In addition to being completely increased or decreased from 0 to 100%, it is only necessary to be able to experience intermittent and to be effective in saving water. It is possible to take a mode of making it variable. If the intermittent frequency is set to the frequency of the commercial power supply, control of the valve / pump or the like becomes easy.

Further, a pressure adjusting means for increasing and decreasing the pressure of the washing water flowing through the water supply path to a predetermined pressure is provided in the water supply path upstream of a portion where the flow of the washing water is interrupted by the interrupting means. be able to. With this configuration, when performing the intermittent flow of the flush water, the pressure of the flush water is increased / decreased in pressure, and then the flow of the flush water is interrupted. Since the pressure of the washing water flowing through the water supply path affects the amount of washing water, the pressure of the washing water before and after the occurrence of intermittent
It is possible to adjust the discharge amount of the wash water in the intermittent flow.

[0034]

Other Embodiments of the Invention The present invention can also adopt the following other embodiments. That is, a water hammer reducing means for reducing a water hammer accompanying the fluctuation generated in the flow of the washing water by the fluctuation generating means in the water supply path upstream of the fluctuation generating means can be provided. In this case, the water hammer can be reliably reduced or avoided. In particular, when used together with preventing the situation of zero flow rate in the flow of the washing water, the water hammer can be more reliably reduced or avoided.

[0035] In this case, a hot water means for warming the supplied washing water may be provided in the water supply path upstream of the water hammer reducing means. By doing so, the water hammer can be prevented from being transmitted to the hot water means, so that the washing water being heated can be hardly disturbed, and the temperature distribution at the time of hot water is not carelessly disturbed. Therefore, it is possible to stabilize the temperature at the time of hot water supply, and control becomes easy.

Further, a water discharging section having a plurality of the water discharging holes for each different water discharging object, and having a pipe line leading to the water discharging holes for each of the water discharging holes; And a switching unit for switching any one of the plurality of conduits of the water discharging section. In addition, a plurality of water discharge units having the water discharge hole and a conduit leading to the water discharge unit, prepared for each different water discharge target,
Switching means for switching a supply destination of the washing water in which the fluctuation or the interruption has occurred to one of the plurality of water discharge units to the conduit of the water discharge unit may be provided.

In this way, the water to be discharged can be cleaned by discharging the cleaning water to the different water discharge targets in a pulsating or intermittent flow state. Moreover, at the time of cleaning each water discharge target, diversification of the cleaning experience can be brought about as described above. In this case, the frequency of the pulsating flow or the intermittent flow can be set for each of the different water discharge targets. For example, in consideration of the boundary region described above, various cleaning modes such as changing the frequency to about 71 Hz in the buttocks cleaning, about 71 Hz in the soft cleaning, and about 83 Hz in the bidet cleaning in the local cleaning apparatus. The frequency may be set according to the characteristics.

Further, as another preferable mode, while changing the frequency of the pulsating flow or the intermittent flow generated by the signal from the commanding means for instructing the flush water discharge in the pulsating flow or the intermittent flow, A frequency control unit may be provided which controls the frequency to be at least about 5 Hz (dead band frequency) at the time of landing on the surface to be cleaned. As an example of this aspect, a pulsating flow or an intermittent flow is not performed during a period when the human body is not cleaned, for example, during a nozzle cleaning for cleaning around the water discharge hole at the beginning of cleaning or after the cleaning is completed, or when cleaning the nozzle itself. Thus, it is possible to adopt a configuration in which the dead band frequency of the pulsating flow or the intermittent flow is obtained only when the surface to be cleaned is landed. In the case where nozzle cleaning is performed before the start of human body cleaning, a pulsating flow or an intermittent flow having a frequency smaller than the dead band frequency is generated at the time of the nozzle cleaning, and the frequency is set at the time of landing on the surface to be cleaned thereafter. By adopting a configuration in which the frequency is raised to the dead band frequency range, comfortable cleaning by a pulsating flow or an intermittent flow can be reliably performed.

[0039]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment in which the human body cleaning apparatus according to the present invention is applied to a local cleaning apparatus for cleaning a local part of a human body will be described based on examples. FIG. 1 is a schematic perspective view showing a local cleaning device 10 according to an embodiment mounted on a toilet, FIG. 2 is a block diagram showing a schematic configuration of the local cleaning device centering on a water channel system, and FIG. FIG. 4 is a cross-sectional view illustrating a schematic configuration of an accumulator 73 provided in the system, and FIG. 4 is a cross-sectional view illustrating a configuration of a wave generation device 74 similarly provided in the waterway system. FIG. 5 is an explanatory view for explaining the flow of the washing water by the wave generating device 74. FIG. 6 is a schematic diagram schematically showing the setting of the wave generating device 74.
FIG. 3 is a block diagram illustrating a schematic configuration of a control system.

As shown in the figure, the local cleaning device 10 has a main body 12 fixed to the rear upper surface of the toilet BT, and a remote control device 14 for remotely controlling a cleaning operation, a drying operation and the like. The main body 12 is provided with a toilet seat 18 and a toilet lid 20 on the toilet opening side so as to be freely opened and closed. The main body has a sleeve 22 on the side of the toilet and a nozzle device 4 having a cleaning nozzle 24 for discharging cleaning water to a cleaning local portion.
0 (see FIG. 8) as well as various functional components described later.

The remote control device 14 has various buttons commonly used for defecation on its front surface, and emits a signal (optical signal) corresponding to the operated button. For example, when the buttocks washing button (not shown) operated when the buttocks washing is desired is operated, a signal to that effect is issued, and this signal is received by the main body 12 side. Then, in response to this signal, the ass washing is started. In addition,
This remote control device 14 has various buttons such as a drying button, a water pressure setting button, and a move setting button, in addition to a stop button and a bidet cleaning button. However, since the remote control device 14 is not directly related to the gist of the present invention, its detailed description will be omitted. Omitted.

The sleeve 22 has on its upper surface a display section 28 for displaying the operating status of the main cleaning device and a cover 29 which can be opened and closed. It should be noted that a light receiving unit that receives the optical signal emitted from the remote control device 14 is incorporated in the display unit. Further, a part of the cover 29 is a light transmitting window 29a that is colored so as to selectively transmit light from a seat sensor SS10 (see FIG. 7) for detecting a seated human body. Further, below the cover of the sleeve 22, a minimum number of buttons required for local cleaning are provided. Even when the remote control device 14 cannot be operated due to battery exhaustion or the like, local cleaning can be performed by button operation on the sleeve. Have been able to do so.

The local cleaning device 10 of the present embodiment has the following water channel configuration and control system configuration for performing a cleaning operation, a drying operation, and the like in accordance with a button operation of the remote control device 14 and the sleeve 22. As shown in FIG. 2, the water channel system of the local cleaning device includes a water inlet valve unit 50, a heat exchange unit 60, a flow regulating valve 65, and a wave generation unit 70 from an external water supply source (not shown). Then, the washing water is guided from the wave generation unit 70 to the washing nozzle 24 via the flow path switching valve 71 of the washing nozzle 24 while keeping the fluctuation by the wave generation unit 70, and the washing water is discharged from the nozzle as described later. It is spouted. These units are connected by upstream and downstream water supply pipes with the wave generation unit 70 interposed therebetween. That is, the water inlet side valve unit 50 and the heat exchange unit 6
Numeral 0 is connected by an upstream water supply pipe 51, and the flow path switching valve 71 downstream of the wave generation unit is connected by a downstream water supply pipe 72.

The upstream water supply line 51 is connected to the water inlet valve unit 50 so as to directly supply cleaning water (tap water) from a water supply source (water pipe) to the local cleaning device. The washing water guided to the upstream water supply pipe 51 is supplied to the water inlet valve unit 5.
After the dust and the like are captured by the strainer 52, the check valve 5
3. Flow into the pressure regulating valve 54. When the conduit is opened by the solenoid valve 55 downstream of the pressure regulating valve, the washing water is supplied to the pressure regulating valve 54 at a predetermined pressure (primary pressure: about 0.098 MPa ｛about 1.0 k).
In a state where the pressure is adjusted to gf / cm ² ６０), it flows into the heat exchange unit 60 of the instant heating type. As described above, the flow rate of the washing water flowing under the pressure regulation is about 300 to 600 cc / mi.
It is set to about n. The upstream water supply pipe 51 may be branched from a flush water tank (not shown) for storing flush water for flushing the toilet and piped to the water inlet valve unit 50.

In the upstream water supply line 51 extending from the water inlet side valve unit 50 to the heat exchange unit 60, a first washing water outlet line 56a with a relief valve 56 interposed is provided. When the pipe pressure on the upstream side of the relief valve rises for some reason and the pipe is opened by the relief valve 56, the first cleaning water outlet pipe 56a sends the washing water in the upstream water supply pipe 51 to the outside. Derive. As a result, it is possible to avoid an increase in the internal pressure of the heat exchange unit in the upstream water supply pipeline 51 and, consequently, the heat exchange unit 60.
Not only is it preferable because fatigue due to expansion can be avoided, and there is no need to provide a heat exchange portion having an unnecessarily high pressure resistance.

The first washing water outlet pipe 56a is disposed such that its end faces the air inlet for deodorization and the air outlet for local drying. Therefore, the washing water discharged from the discharge conduit is discharged to the intake port, the exhaust port, or the toy formed in the lower case. Since the intake port, the exhaust port, and the toy face the bowl portion of the toilet bowl, the intake port, the exhaust port, and the toy may be contaminated by splashing water of dirt disposed on the ball portion. However, since the intake port, the exhaust port, and the toy are washed with the washing water from the above-mentioned outlet pipe, it is preferable from the viewpoint of hygiene and cleanliness. Note that the flush water spouted from the outlet pipe flows down to the bowl bowl portion and does not stain the periphery of the toilet bowl.

The heat exchange unit 60 downstream of the water inlet valve unit has a heat exchange section 62 having a heater 61 built therein. The heater 61 is made of tungsten-molybdenum having good thermal responsiveness, and is manufactured as follows. First, a heater pattern is screen-printed on a ceramic sheet with a tungsten-molybdenum paste, and the ceramic sheet is wound around a cylindrical ceramic and sintered. By doing so, the heater 61 is configured as a cylindrical ceramic heater formed by insulating the heater pattern with the insulating layer. Then, a Ni-plated Kovar electrode is used for the energizing electrode portion, and this Kovar electrode is soldered and fixed to the heater pattern. Further, the mounting flange is fixed to the cylindrical heater thus formed by glass welding to form a heater 61. Since the heater 61 has good thermal responsiveness in this manner, the heat exchange section 62 only needs to have a capacity capable of instantaneously heating the cleaning water by the heater 61. The entire unit can be reduced in size. Further, since the structure of the heat exchange unit 60 is simplified, there are advantages in manufacturing such as a reduction in the number of assembling steps and a reduction in cost. A bimetal switch and a thermal fuse (not shown) for mechanically shutting off abnormal heating are mounted on or near the heater 61.

The heat exchange unit 60 detects the temperature of the wash water flowing into the heat exchange section 62 and the temperature of the wash water flowing out of the heat exchange section 62 with the incoming water temperature sensor SS16a and the outgoing water temperature sensor SS16b. The cleaning water is heated by the heater 61 into cleaning water having a set temperature. Then, the washing water heated in this way flows into a wave generation unit 70 described below after the flow rate is adjusted by the flow regulating valve 65.
The flow control valve 65 is a flow control switching valve that switches between a pipe leading to the wave generation unit 70 and another external pipe (for example, a drain water pipe to a bowl portion of a toilet bowl). Roads and other external pipelines (abandoned water pipelines)
By changing the ratio of the opening degree to the above, the flow rate (wash water discharge flow rate) to the wave generation unit 70 may be adjusted. In this case, the flush water having a difference between the flush water flow rate reaching the flow control switching valve and the flush water discharge flow rate flows down from the external conduit to the toilet bowl portion. In other words, the flow rate of the flush water spout is adjusted via the flush water derivation other than the nozzle. in this case,
If the heat exchange unit 60 is covered with a heat insulating material such as a foam material,
The power consumption of the heater for warming the washing water can be reduced in combination with the effect of keeping the washing water warm by the heat insulating material. That is, the energy saving effect increases.

Further, the heat exchange unit 60 has a float switch SS18 for detecting the water level in the heat exchange section. This float switch is configured to output a signal to that effect when the water level of the heater 61 is equal to or higher than a predetermined water level at which the heater 61 is submerged. Then, the electronic control unit 80 controls the energization of the heater 61 under the condition that this signal is input, so that it is possible to avoid a situation in which the heater 61 that is not submerged is energized, that is, a so-called empty heater. . Note that the heater 61 of the heat exchange unit 60 is optimally controlled by an electronic control device 80 described later while combining feed-forward control and feedback control.

Further, the heat exchange unit 60 is provided with a vacuum breaker 63 at a washing water outlet from the heat exchange section 62, that is, at a heat exchange section connection point of a pipe downstream of the heat exchange section. The vacuum breaker 63 introduces air into the pipeline to cut off the cleaning water in the pipeline downstream of the heat exchange unit, and prevents backflow of the cleaning water from the downstream side of the heat exchange unit.

The wave generation unit 70 has an accumulator 73 and a wave generation device 74 from the upstream side.
As shown in FIG. 3, the accumulator 73 includes a housing 73a connected to the upstream water supply pipe 51 upstream of the wave generator 74, a damper 73c disposed in a damper chamber 73b in the housing, and a damper 73c. And a spring 73d that exerts an urging force. Therefore, the accumulator 73 reduces the water hammer of the upstream water supply pipe 51 upstream of the wave generation device 74. Therefore, the heat exchange section 62
The effect of water hammer on the wash water temperature distribution can be reduced, and the temperature of the spout wash water can be stabilized.

In this case, the accumulator 73 may be disposed close to or integrated with the wave generating device 74, so that the pulsation generated by the wave generating device 74 is propagated to the upstream side as described later. This is preferable from the viewpoint that this can be quickly and effectively avoided. The accumulator 73 includes a damper 73c and a spring 7 for urging the damper 73c.
It is also possible to provide a configuration having only the damper chamber 73b as a mere air chamber without 3d, or to form an air reservoir in which the upstream water supply pipe 51 is partially expanded upward intentionally.

The wave generating device 74 includes, as shown in FIG.
A plunger 74b is slidably provided in a cylinder 74a connected to the upstream / downstream water supply conduits 51 and 72. Then, the plunger 74b is moved forward and backward by the excitation control of the electromagnetic coil (pulsation generating coil) 74c. The plunger 74b moves downstream from the illustrated original position (plunger original position) by excitation of the pulsation generating coil 74c, but returns to the original position by receiving the urging force of the return spring 74e when the coil excitation disappears. At this time, the operation of the plunger 74b is buffered by the buffer spring 74d.

Since the plunger 74b has a check valve 74f formed of a steel ball and a spring inside the plunger 74b, when the plunger 74b moves from the plunger original position to the downstream side, the cylinder 74a
The washing water in the inside is pressurized and flushed to the downstream water supply pipeline 72.
At this time, since the original position of the plunger is constant, a fixed amount of washing water is sent to the downstream water supply pipeline 72. Thereafter, when returning to the original position, the flush water flows into the cylinder 74a via the check valve 74f, so that the next time the plunger 74b moves downstream, a certain amount of flush water is again supplied to the downstream water supply line 72. Will be sent to In addition, when the plunger 74b returns to the original position, the washing water is drawn in the downstream side of the plunger, that is, in the downstream water supply pipe 72. Pulsation that periodically fluctuates up and down is caused, and the washing water flows in the downstream water supply conduit 72 in a pulsating flow state.

In this case, the wave generating unit 70 is supplied with the above-mentioned primary pressure washing water via the upstream water supply pipe 51. Therefore, as described above, the washing water flowing into the cylinder 74a via the check valve 74f during the return of the plunger 74b to the original position is affected by the pressure loss by the check valve 74f and the suction of the washing water on the downstream side. Although not maintained at the primary pressure, the water is sent to the downstream water supply pipeline 72. When this state is represented by a diagram, as shown in FIG.
The pressure pulsating around the water pressure Pin introduced into the wave generating unit is sent from the wave generating device 74 to the downstream water supply pipe 72, and further to the washing nozzle 24, and is discharged to a local portion as described later. Moreover, the washing water pressure sent downstream from the wave generating device 74 becomes zero due to the flushing water flowing into the cylinder 74a via the check valve 74f when the plunger 74b returns to the original position as described above. Absent. The pulsation transition of the washing water pressure is reflected in the transition of the washing water flow rate.
In this case, since the above introduced water pressure Pin, which is the center of the pulsation, is regulated by the flow regulating valve 65, the pulsation can be shifted up and down with the locus shown in FIG. Since the pulsation transition of the washing water pressure is reflected in the transition of the washing water flow rate, the pulsation can be shifted to adjust the water discharge amount itself up and down.

The pulsation cycle MT shown in FIG. 5 is synchronized with the excitation cycle of the pulsation generating coil 74c, and can be variously set as described later through control of changing the excitation cycle. In addition, since only the coil excitation for reciprocating the plunger 74b is required to generate the pulsating flow of the washing water, the configuration of the wave generating device 74 can be simplified.

In this embodiment, as shown in FIG.
The wave generating device 74 is connected to the heat exchange unit 62 of the heat exchange unit 60.
Is located downstream of the water supply line, the pulsating flow of the washing water has a larger diameter than the water supply pipe, and therefore does not pass through the heat exchange section where pulsation damping is likely to occur. Therefore, the downstream water supply line 7
2. The cleaning nozzle 24 can be supplied with the pulsating flow of the washing water without being affected by the pulsation attenuation by the heat exchange section.

Further, when installing the wave generating device 74, a so-called anti-vibration rubber is interposed. Therefore, the vibration caused by the pulsation can be suppressed and the generation of abnormal noise due to the vibration can be suppressed by the vibration damping action of the vibration-proof rubber. In this case, the wave generating device 74 is installed on a resin plate (not shown) whose specific gravity is increased by mixing a powder or a granular material having a high specific gravity such as a metal, and this resin plate is interposed with an anti-vibration rubber. Then, it can be arranged on the bottom plate of the main body. In this way, the vibration source mass itself is increased as the sum of the wave generating device 74 and the resin plate, so that the vibration caused by the pulsation can be made less likely to occur. Can be.

In order to increase the mass of the vibration source in this way, instead of installing the wave generating device 74 on the resin plate having a high specific gravity as described above, a member or a unit having a large mass of the local cleaning device is used. Wave generator 7
4 can also be installed. In this case, since no resin plate is required, there is an advantage in manufacturing such as a reduction in cost due to a reduction in the number of members, and the size of the apparatus can be reduced. Further, if a vibration isolating rubber is also provided between the wave generating device 74 and the resin plate, the vibration isolating rubber and the vibration isolating rubber on the lower surface of the resin plate can be used as a two-degree-of-freedom system vibration as shown in FIG. An insulating damper mechanism can be configured. For this reason, by selecting an anti-vibration rubber so that the spring constants k1 and k2 and the damping coefficients c1 and c2 are effective to reduce vibration, a high damping effect can be exhibited, and vibration can be propagated to a toilet seat or the like. Can be effectively avoided. It should be noted that such vibration suppression can also effectively suppress the generation of abnormal noise due to vibration.

In addition to the fact that the accumulator 73 is disposed between the wave generating device 74 and the heat exchange unit 62, unnecessary pulsating pressure is not applied to the heat exchange unit 62.
For this reason, it is possible to avoid an inadvertent rise in the internal pressure of the heat exchange section, so that it is possible to avoid fatigue due to deformation and contraction / expansion of the heat exchange section, and it is necessary to provide a heat exchange section having a pressure resistance performance higher than necessary Absent.

In the present embodiment, the following was used to construct the above-mentioned waterway system. That is, both the upstream and downstream water supply lines 51 and 72 are made of high-hardness flexible piping, and the hardness of the downstream water supply line 72 is made larger than that of the upstream water supply line 51. . Also, coupler type joints were used for these pipe lines and the pipe connection portions of the respective units. Furthermore, each unit was arranged close to each other to shorten the length of the water supply pipe between the units. As a result, expansion and contraction, expansion and contraction of the water supply pipe itself are less likely to occur, and the influence of pulsation damping due to this expansion and contraction can be suppressed. Can be sent.
In particular, since the wave generation device 74 and the flow path switching valve 71 are arranged close to each other, the pulsation damping when the wash water passes through the downstream water supply pipe 72 during this time, the downstream water supply pipe 72 has a high hardness. Combined with the flexible piping, it can be suppressed more effectively.

In this case, the upstream and downstream water supply lines 51,
The 72 water supply lines can be as follows. For example, the two water supply pipes are made of high hardness flexible pipes of the same material, and the pipe wall of the downstream water supply pipe 72 is connected to the upstream water supply pipe 51.
By making it thicker, it is possible to make the hardness of both water supply pipes large and small. Further, the material of the two water supply pipes may have a certain degree of hardness.

The control system of the local cleaning device of this embodiment is shown in FIG.
As shown in FIG. 1, the electronic control unit 80 mainly includes a microcomputer. The electronic control unit 80 includes various sensors such as the above-described seating sensor, incoming / outgoing water temperature sensor, a float switch, and a fall detection sensor S.
In step S30, in addition to the signal from the washing water amount sensor SS14, various operation buttons such as the washing button on the remote control device 14 and the sleeve 22 and the operation status of the knob are input by a wired or wireless (optical signal) via an input circuit. I do. in this case,
The washing water amount sensor detects the amount of washing water in the downstream water supply line 72, and outputs the detection result to the electronic control unit 80. The fall detection sensor SS30 detects the tilt state of the main cleaning unit and outputs the result to the electronic control unit 80.

The electronic control unit 80 controls the solenoid valve opening / closing valve of the water inlet valve unit 50, the heater energization control of the heat exchange unit 60, the flow control valve control, and the main body sleeve display unit based on the input signal. Display control, energization control of a drying unit 79 including a drying heater and a fan motor for local drying, a deodorizing unit (not shown) including an ozonizer and a suction fan motor for odor removal, and a heater and a fan motor for indoor heating In addition to executing the energization control of the heating unit (not shown) including the above, the pulsation frequency control through the nozzle drive motor control of the nozzle device 40 described later and the excitation control of the pulsation generation coil 74c is executed based on the above signal. This pulsation frequency control will be described later in detail. Note that the drying heater for local drying can be shared with a heater for indoor heating, and the fan motor for local drying can be shared with a fan motor for odor removal or indoor heating.

Next, the nozzle device 40 included in the local cleaning device 10 of this embodiment will be described. FIG. 8 is a schematic perspective view showing the nozzle device 40, and FIG. 9 is a view 9-9 in FIG.
FIG. 10 is a schematic cross-sectional view taken along a line, and FIG.

As shown, the nozzle device 40 is housed and installed in the main body 12 (see FIG. 1) of the local cleaning device 10. The nozzle device 40 includes a base 41 fixedly installed on the main body 12, a nozzle drive motor 42 incorporated and disposed on a pedestal 41a on the upper surface of the base, and a forward / reverse rotation of the motor converted into forward / backward movement for cleaning. A transmission mechanism 43 for transmitting to the nozzle 24, and a nozzle holder 41 erected on the upper surface of the base and slidably holding the cleaning nozzle 24 on the toilet bowl side.
b, and a guide rail portion 44 for guiding the cleaning nozzle 24 along a nozzle advance / retreat trajectory described later.

The transmission mechanism 43 includes a drive pulley 43a fixed to the rotation shaft of the nozzle drive motor 42, driven pulleys 43b before and after the nozzle advance / retreat trajectory, and a timing belt 43c stretched over these pulleys. And a tension roller 43d for applying tension to the belt. The timing belt 43c is provided via a belt gripper 24b extending from the cylindrical portion 24a of the cleaning nozzle 24.
The nozzle is engaged and fixed. Therefore, the cleaning nozzle 24 is driven forward and backward in accordance with the forward and reverse rotation of the timing belt 43c.

The guide rail portion 44 is formed concentrically with the arc-shaped nozzle advance / retreat track 45 shown in FIG. 10 and is located below the washing nozzle 24. As shown in FIG. 9, the guide rail portion 44 is engaged with the cleaning nozzle 24 via a track holding body 24 c below the rear end of the nozzle. This track gripper 24c
Grips the rail portions left and right of the guide rail portion 44 up and down,
The rail gripping portion has a gripping portion 24d having a track gripping surface having the same radius of curvature as the nozzle advance / retreat track 45. The grip portion 24d has a sliding property with respect to a rail portion and a vibration absorbing function, and is made of a rubber-based material that has been subjected to a material blending process such as oil impregnation and WAX blending, or a surface such as a Teflon coat, a halogen process, and a satin finish. Manufactured using processed rubber-based materials. Therefore, as described later, the wave generation device 7
Even if the pulsating cleaning water flows into the cleaning nozzle from 4 and the vibration due to the pulsating flow occurs in the cleaning nozzle, the propagation of the vibration to other members can be prevented. For this reason, generation of abnormal noise due to vibration can also be suppressed.

Further, the nozzle holding portion 41 on the toilet bowl portion side
b holds the cleaning nozzle 24 slidably. Therefore,
When the cleaning nozzle 24 is driven forward and backward by the timing belt 43c, the cleaning nozzle 24 is driven forward and backward along the guide rail portion 44, and its movement trajectory is an arc-shaped nozzle forward and backward trajectory 45.
Matches. In this case, even in the cleaning nozzle 24, the cylindrical portion 24 a is formed to be curved along the axial direction with the same radius of curvature as the nozzle advance / retreat track 45. For this reason,
The cleaning nozzle 24 is driven to move back and forth between the standby position HP in the main body and the cleaning positions (butt cleaning position AWP, bidet cleaning position VWP) in the bowl portion in accordance with the arc-shaped nozzle advance / retreat trajectory 45. I do. The nozzle holding part 41b
In order to reduce the sliding resistance of the cleaning nozzle, only a part of the cleaning nozzle is in contact with the outer wall of the nozzle. Then, if a rubber-based material exhibiting the slidability and the vibration absorbing function after receiving the above-mentioned compounding treatment or surface treatment is arranged in the contact portion, the above-described effect of preventing the propagation of vibration and the effect of avoiding generation of abnormal noise are provided. Can be increased.

As a result, as shown in FIG. 10, the cleaning nozzle 24 at the standby position HP can be mounted on the nozzle device 40 so as to approach the upper surface of the toilet bowl along its axial direction. Therefore,
The height (nozzle height) of the back end of the washing nozzle from the toilet
It can be lower than when the cylindrical cleaning nozzle is moved back and forth along an inclined straight orbit. Therefore, the main body 12 (see FIG. 1) can be lowered by the reduction of the nozzle height, and the local cleaning device itself can be downsized. Further, since the angle of the upper surface of the nozzle head changes due to the advance of the nozzle, and the angle of spouting the washing water from the head changes, the washing range can be largely moved with a small nozzle movement. Specifically, even if the reciprocating range of the nozzle during the move cleaning described below is narrowed, the cleaning water can be discharged over the cleaning range required for the move cleaning. Alternatively, even if the nozzle moving distance from the buttocks washing position AWP to the bidet washing position VWP is short, the washing location with the washing water can be changed from the buttocks to the bidet. In addition,
While the above-mentioned washing nozzle 24 has a straight pipe shape,
The nozzle advance / retreat trajectory 45 may also be a straight trajectory, and the nozzle may be advanced / retracted along the straight trajectory.

In the nozzle device 40 of this embodiment, as described above, the cleaning nozzle 24 and the guide rail portion 44 have a vertical positional relationship, so that the size can be reduced in the width direction. Therefore, the nozzle device 40 and the wave generation device 74 can be arranged closer to each other, so that the effect of suppressing pulsation attenuation in the downstream water supply pipe 72 can be enhanced. When the nozzle device 40 was installed, the base 41 (see FIG. 8) was disposed on the bottom plate of the main body with the vibration-proof rubber interposed therebetween. Therefore, even if the vibration accompanying the pulsation propagates to the nozzle device 40, the vibration can be effectively suppressed by the vibration damping action of the vibration-proof rubber, and
Generation of abnormal noise due to vibration can also be suppressed.

Next, the cleaning nozzle 24 will be described.
FIG. 11 shows a flow path switching valve 71 of the cleaning nozzle 24.
FIG. 12 is an exploded perspective view of a main part of the flow path switching valve 71 for explaining the configuration of FIG. FIG.
Is a plan view showing the nozzle head 25 in a plan view and a part of the periphery of the head cut away, and FIG. 14 is a plan view showing a modified example of the nozzle head 25.

As shown in FIGS. 8, 9 and 11, the flow path switching valve 71 is located at the rear end of the washing nozzle 24. The pulsating flow of the washing water sent from the wave generating device 74 is switched to the nozzle flow path for cleaning the tail of the cleaning nozzle 24, the soft cleaning, and the bidet cleaning.

The flow path switching valve 71 includes a casing 71a having a switching mechanism described below. The flow path switching valve 71 is integrated with the cleaning nozzle 24 by welding the casing 71a to the rear end surface of the cylindrical portion 24a of the cleaning nozzle 24. Therefore, it advances and retreats along the trajectory together with the cleaning nozzle 24 as described above.

The casing 71a has, from the nozzle side, a stator 71 having a communication hole communicating with each flow path in the nozzle.
b, a rotor 71c that rotates for switching the flow path and selectively opens each communication hole of the stator 71b;
c, and a housing 7 for rotatably housing the coupling 71d.
1e and a spring 71f for urging the rotor 71c toward the stator 71b. As shown in FIG.
The communication holes 71g to 71i of the stator 71b are
On the side facing 1c, the opening is equally divided, and on the nozzle side, the inner nozzle flow path shown in FIG. The second nozzle flow path 26b and the third nozzle flow path 26c of the bidet cleaning nozzle flow path are opened so as to communicate with the respective flow paths.
That is, the communication hole is formed to be curved in the stator 71b. These communication holes may be arranged alongside the openings of the nozzle flow paths at the rear end of the washing nozzle. In this case, the communication holes may be straight holes. In addition, the above-mentioned first to third nozzle flow paths 26a to 26c
Is the cylindrical portion 24a up to the nozzle head 25 at the tip of the nozzle.
Are formed in the longitudinal direction.

The rotor 71c has a notch 71 which can open one of the communication holes equally opened on the upper surface of the stator 71b.
j, and the communication hole is opened by overlapping the notch 71j with the opening of the communication hole. In this case, the rotor 71c can block each communication hole by positioning the notch 71j between the adjacent communication holes. That is, the notch 71
j is located between adjacent communication hole openings.
When the is slightly rotated, the washing water can be sent to the above-mentioned respective flow paths in the nozzles through the communication holes. In addition, for the convenience of draining (draining) water remaining in the nozzle, the rotor 71c is provided with a notch that can overlap with all the communication hole openings, and when draining, all of the notches are used. Can be opened.

The coupling 71d is mounted on the rotating shaft of the drive motor 71k of the flow path switching valve 71, and positions the rotating shaft pin 71n in the slit 71m. The coupling 71d positions the rotary key 71q in the slit 71r of the rotor 71c. Therefore, when the drive motor 71k rotates forward and reverse, the rotation is transmitted to the coupling 71d by the rotation shaft pin and to the rotor 71 by the rotation key 71q.
c. The notch 71j selectively opens one of the communication holes as described above by the rotation of the rotor 71c, so that the pulsation from the wave generation device 74 Stream wash water is supplied.

In this case, the washing water from the wave generating device 74 passes through the downstream water supply pipe 72 (see FIG. 2) and the connection joint 71 s provided in the casing 71 a of the flow path switching valve 71, and this flow switching valve 71. Flow into In connecting the downstream water supply line 72 from the wave generation device 74 to the connection joint 71s, a measure such as disposing the wave generation device 74 below the connection joint 71s is taken, and the connection is established in the middle of the downstream water supply line. Air accumulation was disabled. Therefore, during the time when the pulsating flow of the washing water reaches from the wave generating device 74 to the flow path switching valve 71, the pulsation is attenuated because there is no air pool and the pipe has a high hardness as described above. Can be suppressed more effectively. In addition, the wave generation device 74
The pipe line from which the pulsating flush water reaches the nozzle device 40 is only the downstream water supply pipe line 72 to the wave generation device 74 and the flow path switching valve 71. Then, in a place where the downstream water supply pipe 72 may come into contact with surrounding members,
A cushioning material such as a vibration-proof rubber was arranged. Specifically, the vibration-proof rubber was attached to the surrounding member side, or the vibration-proof rubber was wound around the water supply pipe. Therefore, in combination with the fact that the downstream-side water supply pipe 72 has a high hardness as described above, pulsation attenuation can be more effectively suppressed.

The members such as the casing of the flow path switching valve 71 are made of polyphenylene sulfide (abbreviated PPS), polyacetal (abbreviated POM), polybutylene terephthalate (abbreviated PBT), glass fiber reinforced polybutylene terephthalate (abbreviated GF / PBT). It is formed using engineering plastics that are highly durable and heat-resistant. Therefore, since the washing water flow path in the flow path switching valve functions as a high-strength pipe, pulsation attenuation due to the expansion and contraction of the pipe does not occur. When supplying the pulsating flow cleaning water from the wave generation device 74 to the nozzle flow path, the flow path switching valve 71 is integrated with the cleaning nozzle 24 and there is no piping therebetween, so that the pulsation damping is reduced. Hardly ever happen. Further, when switching the water supply destination as described above, since the rotation of the rotor 71c is used, the damping of the pulsation can be more effectively reduced as compared with a flow path switching valve using the elasticity of an elastic body such as a diaphragm. Can be suppressed.

The flow path switching valve 71 has the following advantages. The flow path switching valve 71 is not integrated with the wave generation device 74 but is integrated with the downstream cleaning nozzle 24, and is separated from the wave generation device 74 that can be a vibration source with the generation of the pulsating flow. Therefore, the vibration source can be only the wave generation source. The flow path switching valve 71 moves forward and backward integrally with the cleaning nozzle 24. However, since the drive motor 71k has its coil winding portion resin-molded, the cleaning water scatters to the drive motor 71k when it advances to the cleaning position. There is no problem in driving the motor. Furthermore, the downstream water supply pipe 72 leading to the nozzle device 40 can be reduced to a single pipe, so that the load of the pipe when the nozzle moves forward and backward can be reduced. Therefore, the load torque on the nozzle drive motor 42 can be reduced.

The nozzle head 25 of the cleaning nozzle 24 has a tail water discharge hole 31 for normal buttocks cleaning, a soft water discharge hole 32 for soft cleaning of the buttocks, and a bidet water discharge hole 33 for bidet cleaning. The nozzle head 25 is provided with the cleaning nozzle 2
The first head flow path 34, the second head flow path 35, and the third head flow path 36, which are fixed to the tip of the cylindrical portion 24a in a water-tight manner and are formed inside the nozzle head, respectively, Nozzle channel 26a, second nozzle channel 26b, third
It is connected to the nozzle channel 26c. As shown in the drawing, these nozzle flow paths reach the above-described water discharge holes on the upper surface of the nozzle head. Therefore, when the flow path switching valve 71 (see FIG. 8) switches the supply destination of the cleaning water to any one of the first to third nozzle flow paths 26a to 26c at the rear end of the nozzle, the cleaning water is switched. The water is discharged from each of the water discharge holes through the nozzle flow path and the head flow path. In this case, the pulsating flush water is supplied from the wave generation device 74, so that pulsating flush water is discharged from each water discharge hole.

In this case, in each of the water discharge holes 31 to 33 of the nozzle head 25, the bottom water discharge hole 31 has the smallest diameter, and the bidet water discharge hole 33 and the soft water discharge hole 32 have a larger diameter than this water discharge hole. Have been. For this reason, the water pressure setting buttons SWhu, SWh of the remote control device (not shown)
Under the situation where the water force is set to be constant by d,
The water discharge speed of the washing water from each water discharge hole is the fastest in the bottom water discharge hole 31, and is slower in the bidet water discharge hole 33 and the soft water discharge hole 32 than in the bottom water discharge hole 31. As described above, the soft cleaning using the soft water discharge hole 32 having a low water discharge speed is such that the washing feeling received from the water discharge is at least softer by the lower water discharge speed than in the case of the normal butt cleaning at the bottom water discharge hole 31. I do. Note that the bidet water discharge hole 33 and the soft water discharge hole 32
Is not limited to a single hole as shown,
As shown in FIG. 14, a plurality of small-diameter fine holes may be arranged, and the whole may be formed as a bidet water discharge hole 33 or a soft water discharge hole 32. In this case, if the total area of the water discharge holes, which is the sum of the areas of the plurality of pores, is equal to or more than the area of the bottom water discharge holes, the water discharge becomes softer as a whole of the pores than in the case of the bottom cleaning.

Next, taking the ass washing as an example, the state of spouting of washing water by the local washing apparatus 10 of this embodiment will be described. FIG. 15 is an explanatory diagram illustrating the state of excitation of the pulsation generating coil 74c of the wave generation device 74 that generates a pulsation at the time of flushing water discharge. FIG. FIG. 17 is a timing chart schematically illustrating a state in which the cleaning water is spouted from the tail spout hole 31 of the nozzle head 25.

The electronic control unit 80 includes a pulsation generating coil 74
Upon exciting c and generating a pulsation in the wave generation device 74, a pulse-like signal is output. Then, the pulse signal is output to a switching transistor 86 (see FIG. 29) connected to the pulsation generating coil 74c and turned on. Therefore, the pulsation generating coil 74c turns ON the switching transistor 86 according to the pulse signal.
Excitation is repeatedly performed by turning OFF, and the plunger 74b is periodically reciprocated as described above. As a result, wash water is supplied from the wave generation device 74 to each of the water discharge holes of the nozzle head 25 in a pulsating flow state in which the pressure periodically fluctuates up and down, and the pulsating flow of wash water is discharged from each of the water discharge holes. You.
At this time, the electronic control unit 80 variably controls the frequency of the pulse signal in a predetermined frequency range,
On / off of the coil excitation pulse is duty ratio controlled.
Thereby, various pulsations can be caused. In this case, a pressure sensor for detecting the pressure of the pulsation caused by the wave generating device 74 may be provided on the downstream side immediately after the wave generating device 74, and the duty ratio control may be fed back by the detection value of this sensor. The position of the sensor is not limited as long as it can reflect the pulsating pressure. For example, it may be provided in the vicinity of the washing nozzle, or may be provided in the vicinity or substantially integrally by using the mechanism of the wave generation device 74.

As shown in FIG. 15, assuming that the pulsation cycle MT shown in FIG. 5 is the cycle T1 and the ON time of the pulse signal is t1, the duty ratio is (t1 / T1) × 100 (%).
Is represented by When the pressure pulsation as shown in FIG. 5 occurs, the amount of the washing water decreases to a value represented by the duty ratio as compared with the continuous flow. As shown in FIG. 16, the amount of water of such a pulsating flow is changed from the maximum flow rate Qmax to the minimum flow rate Qm.
increase / decrease in the range of in.
From the minimum flow velocity Vmin. In FIG. 16, the reason why the minimum flow rate Qmin and the minimum flow velocity Vmin are not zero is that the pulsation pressure by the wave generating device 74 is not zero as described above even at its minimum.

In this case, as described above, the wave generator 7
4 is adjusted by the pressure regulating valve 54, the maximum flow rate Qmax and the minimum flow rate Qmin and the maximum flow velocity Vmax and the minimum flow velocity V shown in FIG.
min can be adjusted up and down. That is, the discharge water amount can be adjusted also by adjusting the introduced water pressure Pin.

When the continuous flow of the washing water is discharged from the water discharge hole (for example, the tail water discharge hole 31) as in the prior art, the wash water from the water discharge hole is converted into a continuous flow as shown in FIG. Take the form of water discharge. On the other hand, when the pulsating flow of the wash water is discharged as described above, as shown in FIG. 17B, the wash water is discharged in a water discharge mode that can be expressed as a discrete or water mass state. You. Thus, the wave generation device 74
The reason why the washing water pulsated by the above is ejected from the water discharge hole of the washing nozzle to be in a discrete or water lump state will be described with reference to FIGS. 16 and 18.

FIG. 18 is an explanatory diagram for explaining a process in which when the pulsating flush water is discharged from the assumed water discharge hole 30, the discharged flush water is amplified to the pulsating flow. FIG.
As shown in (A), when the amount of washing water is pulsated by the wave generation device 74, the flow velocity V is similarly changed to be pulsating.
That is, the amount of the flushing water discharged is the maximum flow rate Q.
When it reaches max, the flow velocity also reaches the maximum velocity Vmax, and the instantaneous flow velocity and flow rate fluctuate with time. FIG.
6. Each part of the pulsating flow of the washing water is denoted by Wp1, Wp2, Wp.
3, Wp4, and Wp5, the amount of each part is Wp1
(≒ Wp5) <Wp2 (≒ Wp4) <Wp3, and the respective flow rates are also V1 (≒ V5) <V2 (≒ V4) <V
It becomes 3. Therefore, from FIG.
As the process proceeds to (C), Wp3 has a higher speed than Wp2, so that Wp3 merges with Wp2 and further Wp1.
Into a large body of water.

As described above, the maximum flow velocity Wp3 is
By sequentially merging with p2 and Wp1, it becomes a large lump and lands on the human body local part (cleaning surface). When the washing water hits a human body part, the washing water is in a state of a water mass having a large collision energy (washing strength). Since the flow velocity V3 is the maximum flow velocity Vmax shown in FIG. 16, the wash water spouted by the pulsating flow has a water spouting form in which a state of a united water mass appears at each pulsation cycle MT. It will be. In addition, since such a phenomenon occurs in the pulsation cycle, the water mass that has passed through the coalescence of the maximum flow velocity Wp3 as described above repeatedly appears, and the water mass at a certain water discharge timing and the water mass at the next water discharge timing.
Will be moved (spouted) at substantially the same speed (maximum speed) as the body of water that has passed through the coalescence. Moreover, each of these water masses is discharged Wp4 with a delay of Wp3 at the maximum flow velocity,
It is as if connected by Wp5.

Next, a description will be given of the difference in cleaning intensity between the case where the washing water is ejected from the tail water discharge hole 31 as a continuous flow and the case where the washing water is ejected as a pulsating flow. The pulsating flow has twice or more the cleaning intensity at the same amount of water as compared with the conventional continuous flow. This is considered as the following reason. The energy E when the washing water having the mass m collides with the wall surface at the speed V is represented by the equation (1). E = (1/2) mV ² (1)

If the force at the time of collision with the wall surface at that time is f, and the time required for the washing water flow at the velocity V to decelerate to 0 and disappear is Δt, the energy E is expressed by the impulse as shown in the following equation (2). Further, the force at that time is represented by Expression (3), where α is the deceleration. E = fΔt (2) f = mα (3)

FIG. 19 is an explanatory view for explaining a state in which the washing water stream collides with the wall surface. In FIG. 19, the water mass is W
Assuming three cases of 1, W2, and W3, the cleaning strength of the cleaning water flow of each of these forms will be examined. Here, the water mass W1 is a long form having a cross-sectional area S1, the water mass W2 is a short form having a cross-sectional area S2 twice as large as S1, and the water mass W3 has a cross-sectional area S1 and a length of water W1
Is a form of 1/2. In these forms, the water mass W
1 corresponds to a continuous flow, and the water masses W2 and W3 correspond to a pulsating flow. At this time, the times Δt1 and Δt2 required for the water mass W1 and the water mass W2 to collide with the wall surface and disappear are given by Δt1> Δt2.
Becomes This means that from equation (3), the deceleration α is large,
It means that the body of water has disappeared with a large force in a short time,
The force f1 of the water body W1 and the force f2 of the water body W2 satisfy f1 <f2. Therefore, it can be understood that the force f2 applied to the human body local part is larger in the water body W2 that disappears in a short time than in the continuous water body W1. For this reason, the water mass W3 corresponding to the pulsating flow has a mass of m / 2 as compared with the water mass W1, but the force f3 does not decrease much as compared with f1. Therefore, when jetted as a pulsating flow, the amount of water can be made smaller than that of the continuous flow, and the force at the time of colliding with the human body local part does not decrease so much. Can be removed. And water mass W
2. When W3 is compared, the force f is larger in a water body having a larger cross-sectional area, and thus the force f can be increased as the number of water bodies increases. As will be described later, the size of the water mass increases as the duty ratio increases, so that the force f (cleaning power) can be controlled to increase or decrease based on the duty ratio.

Next, the relationship between the washing intensity, which is an index indicating the feeling of washing of a human body part, and the feeling of water will be described. FIG. 20 is an explanatory diagram illustrating a state in which the pressure sensor plate Ps is installed facing the buttocks discharge hole 31 at a predetermined distance La. The predetermined distance La is set at a position where the human body part is cleaned. The pressure sensor plate Ps is a sensor that includes detection units in a two-dimensional matrix and outputs the detection values of each detection unit independently. Using such an apparatus, the peak value of the pressure output from each detection unit when the washing water was spouted from the tail spout hole 31 of the washing nozzle 24 was measured. FIG. 21 shows the result. FIG. 21 is an explanatory diagram three-dimensionally expressing the position on the pressure sensor plate Ps and the peak value of the pressure, and the XY plane represents the position of the pressure sensor plate Ps, that is, the position of the object to be detected. And the Z axis represents the peak value of the pressure at each position. FIG. 21 (A) shows that the flow rate of the washing water reaching the spout hole is 1.1 L / min. FIG. 21 (B) is a measurement result at the time of the continuous flow of FIG.
5 L / min. 5 shows the measurement results at the time of the pulsating flow. FIG.
In, the cleaning intensity, which is a factor that affects the feeling of cleaning, is represented by a peak value of pressure, while the feeling of volume is represented by the volume of a mountain, which is the overall pressure distribution.

When these are compared, the peak value of the pressure in the pulsating flow of FIG. 21B is greatly increased, although the amount of washing water is halved as compared with the continuous flow of FIG. 21A. ing. This indicates that the washing pressure on the water body is large, that is, the washing strength is large.
FIG. 22 is a timing chart showing a detection signal detected from one of the detection units. FIG.
FIG. 22B shows a pulsating flow. It can be seen that the pulsating flow has a higher peak value and a higher intensity than the continuous flow. Also, the volume of the peak, which is the overall pressure distribution, is much larger in the pulsating flow of FIG. 21B than in the continuous flow of FIG. As described above, the pulsating flow has an extremely large volume (water volume) as compared with the continuous flow, and if the sensual element of the cleaning sensation is embodied in a numerical value, the pulsating flow has excellent cleaning power. I understand.

FIG. 23 shows the result of examining the actual cleaning amount by such a pulsating flow in comparison with a continuous flow. FIG.
It is a graph showing the relationship between the average amount of water discharged and the amount of cleaning, that is, when removing dirt attached to the human body part with cleaning water,
The average required water discharge is shown. As can be seen from FIG. 23, in order to remove the dirt of the cleaning amount D1 adhered to the human body part, it was found that the pulsating flow had a water amount of about ４ of that of the conventional product which can only discharge the continuous flow of cleaning water. . As described above, by the method of discharging the pulsating flow of cleaning water from the water discharge holes, the cleaning strength (cleaning power) and the user's feeling of cleaning (cleaning satisfaction) can be dramatically increased.

In the pulsating flow, the average amount of water discharged in FIG. 23 is a continuous form of the above-mentioned water mass, and as the size of the water mass increases, the average water discharge amount also increases.
Since the size of the water mass can be controlled by the duty ratio control as described above, the cleaning power can be adjusted also by the duty ratio control, and the larger the duty ratio, the higher the cleaning power can be obtained.

Further, when the pulsating flow of the washing water is spouted, the washing intensity increases and the stimulation to the local human body increases. This can be explained as follows. Generally, a stimulus that can be sensed at the same location on the human epidermis (in this embodiment, water masses W1 and W1 shown in FIG. 19).
2. When a stimulus caused by the collision of W3 is intentionally repeatedly applied, the repetition interval (in this embodiment, the pulsation cycle M
If T) is long and the repetition frequency is low, the person perceives this repeated stimulus as a vibration stimulus each time. On the other hand, if the repetition interval is short and the repetition frequency is high, a person cannot perceive this intentionally repeated stimulus as a vibration stimulus but perceives it as a continuous stimulus. In other words, there is a dead band frequency that cannot be sensed as a vibration stimulus for a repetitive stimulus to the human epidermis.

Here, in the washing of the local area and its surroundings, it is assumed that the magnitude of the flow rate or flow velocity of the washing water is repeatedly discharged (hereinafter referred to as “repeated discharging”) from the stimulus of the human epidermis. Since the magnitude is repeated, this repeated water discharge appears as a vibration stimulus on the epidermis of the washing location. If this is a repetition frequency in the dead band frequency range of about 5 Hz or more, the perception cannot follow the vibration based on this intentional repeated water discharge. For this reason, it becomes impossible to be conscious of the water discharge mode (wash water discharge form in a pulsating flow) of intentional repeated water discharge, and discomfort due to unnecessary vibration is reduced. As the repetition frequency of the repetitive water discharge increases, it becomes more difficult for the perception to follow the vibration based on the intentional repetition of the water discharge. Therefore, when the repetition frequency becomes a repetition frequency of about 10 Hz or more, the majority having the normal perception This person can hardly perceive the vibration based on intentional repeated water discharge. Therefore, it is difficult to recognize a water discharge mode (wash water discharge form in a pulsating flow) that water is intentionally repeated water discharge, and discomfort due to unnecessary vibration is further reduced.

Further, at a repetition frequency of about 15 Hz or more, even the average part of the human epidermis exceeds the vibration recognition frequency. Furthermore, at a repetition frequency of about 20 Hz or more, even a sensitive part of the human epidermis exceeds the vibration recognition frequency, so that a large number of people with normal perception can surely feel continuous and good washing feeling. it can. In addition, at a repetition frequency of about 30 Hz or more, even in a sensitive part where nerves of the human epidermis are particularly concentrated, the frequency exceeds the vibration recognition frequency. be able to. Then, the repetition frequency is made to coincide with the commercial frequency (50 Hz in the commercial frequency 50 Hz area, commercial frequency 6).
(In the 0 Hz area, it is 60 Hz). As the frequency is increased in this manner, the washing can be performed while feeling the continuous washing feeling more reliably, and it is possible to sufficiently cope with a user who desires a softer washing feeling. In other words, the lower the frequency, the stronger the stimulus, and the higher the frequency, the weaker the stimulus.
By controlling the frequency at the time of discharging the water in the pulsating flow, the intensity of the stimulus can be adjusted.

In this case, 5 out of the above-mentioned dead zone regions
In a low frequency range such as 20 Hz to 20 Hz, as described above, the user does not usually recognize a stimulus change during local cleaning. However, due to hemorrhoidal disease, physiology, or the like, a slight change in stimulus may be recognized in the washing water spouting in the low frequency region. Therefore, the region on the low frequency side is set as the boundary region of the dead zone,
A region from z to about 60 Hz or about 80 Hz may be set as a boundary region, and a frequency region above this boundary region may be set as a certain dead zone. In this way, it is possible to reliably prevent recognition of a stimulus change.

From these facts, in performing the intentional repetitive water discharge of the pulsating flow of the cleaning water discharge of the present embodiment,
As the repetition frequency increases, it becomes more difficult for the perception to follow the vibration based on intentional repeated water discharge. When the repetition frequency is about 10 Hz or more, most people who have normal perception hardly perceive the vibration based on intentional repeated water discharge. Therefore, it is difficult to recognize a water discharge mode (washing water of a pulsating flow) that the water is intentionally repeated water discharge. In this embodiment, the user who receives the collision of the water mass shown in FIG. Most people cannot perceive the impact of this body of water as intermittent, but can make it feel as if it is a continuous flow of wash water.

The following is a description with reference to the drawings. FIG. 24 is an explanatory diagram for explaining the reason why the cleaning intensity varies depending on the increase or decrease of the frequency. FIG. 24A is determined by this period because the pulsation period MT is large even with the same amount of cleaning water than FIG. 24B. This shows a state where the pulsation frequency fmt (= 1 / MT) is small. In FIGS. 24 (A) and 24 (B), the size can be as large or small as the above-mentioned body of water due to the length of the cycle. Therefore, in the case of FIG. 24A in which the pulsation cycle MT is large and the pulsation frequency is small, the mass of the water mass in one collision increases, the collision energy increases, and the stimulation to the human body is strong. That is, in the case of FIG.
The human body receives a large stimulus at once and feels a strong stimulus.
Further, as shown in FIG. 24A, when the pulsation frequency fmt falls below the above-mentioned dead band frequency or becomes a frequency close to this frequency, the human body repeatedly receives a strong stimulus while sensing it each time. feel.

On the other hand, as shown in FIG. 24B, if the pulsation frequency fmt is large and is within the above-mentioned dead band frequency, a small stimulus is received as a continuous stimulus as described above. Absent. From this, even with the same amount of water, the frequency increases, and the larger the water mass, the stronger the stimulus (washing intensity) to the human body is felt. FIG. 25 is a graph showing the relationship between the pulsating frequency and the washing intensity of the pulsating flow and the discomfort due to the stimulation of the local human body. When the frequency exceeds 5 Hz, the human skin approaches a continuous flow and can be felt as soft washing, and when the frequency exceeds about 30 Hz, it is almost indistinguishable from the continuous flow. Therefore, the frequency of the pulsating flow is preferably 5 Hz or more.
Considering that the frequency of the commercial power supply is used as it is for the excitation control of 4c, if the control frequency range is 50 to 60 Hz, the configuration for control can be simplified.

From the viewpoint of the dead band frequency, in the present embodiment, the excitation cycle of the pulsation generating coil 74c, that is, the pulsation cycle MT is determined by setting the pulsation frequency ftm (= 1 / MT) to about 5
The control is variably controlled so as to be in the range of Hz or more, and the stimulus to the local part of the human body due to the water mass is sensed as a continuous stimulus. In other words, despite the fact that the washing water volume is reduced only by intermittently ejecting the washing water mass to the washing location of the human body part at the pulsation cycle MT, the user is continuously provided with the washing spot. It is possible to give a feeling of washing as if the washing water is being spouted. Therefore, according to this embodiment, the flow rate of the washing water is controlled by the flow regulating valve 65 to about 1
Even if the cleaning water is reduced to about 500 cc / min, which is about １ ／ to 洗浄, the cleaning performance and the feeling of cleaning can be enhanced. Therefore, it is only necessary to discharge (supply) the cleaning water at the maximum flow rate. In other words, it is possible to give the user the feeling of receiving continuous water spouting while improving the effectiveness of water saving.

Even if the pulsation frequency ftm is set to the above-mentioned dead band frequency, it can be said that the sense of continuous spouting received from the continuous spouting of the washing water tends to fade as the pulsation frequency ftm decreases. Therefore, the pulsation frequency ftm can be intentionally lowered within the above range to give the user a slight intermittent feeling of washing (stimulation).

Further, the pulsation frequency control and the duty ratio control of the coil excitation can be performed as follows. FIG.
FIG. 27 is an explanatory diagram illustrating a control example in which the pulsation frequency in the pulsating flow of the washing water is made different between the butt cleaning and the bidet cleaning. FIG. 27 is an explanatory diagram illustrating a control example of the pulsating frequency ftm and the duty ratio Dtm. is there.

As shown in FIG. 26, the pulsation periods MTA and MTV in the ass washing and in the soft and bidet washing are set to be large and small, and the respective pulsation frequencies ftm can be made different. In addition, the pulsation frequency ftmA at the time of ass washing was set lower than the pulsation frequency ftmV at the time of soft / bidder washing. In this case, both frequencies are within the above-mentioned dead band frequency range. For example, by changing the frequency to 50 Hz for butt cleaning, 60 Hz for soft cleaning, 70 Hz for bidet cleaning, or about 71 Hz for butt cleaning,
By changing the frequency to about 71 Hz for soft cleaning and about 83 Hz for bidet cleaning, as described below, the frequency is set so that bidet cleaning and the like have a smaller form of water than butt cleaning. Is also good.

By the frequency control according to the object to be cleaned as shown in FIG. 26, as described with reference to FIG.
It becomes a washing that receives a sufficient stimulus continuously,
A hard washing feeling can be obtained. Also, soft
At the time of bidet cleaning, the water is discharged as shown in FIG. 24B, so that the cleaning is such that a relatively weak stimulus is continuously received, and a soft cleaning feeling can be obtained. In particular, in the soft bidet cleaning, the pulsation frequency ftm is increased to prevent an intermittent stimulus feeling, so that the soft cleaning feeling can be made more continuous. Moreover, in achieving such various washing feelings, the flow rate can be reduced as described above.

Further, as shown by a dotted line or a dashed line in the drawing, the pulsation frequency ftm is set to be the same for each cleaning, and the duty ratio Dtm can be changed and controlled for each cleaning. Since the duty ratio Dtm determines the coil exciting force, that is, the moving speed and the moving amount of the plunger 74b in the wave generating device 74, the amplitude of the pulsation can be controlled to increase or decrease. Therefore, the amount of cleaning water and the flow velocity shown in FIG. 16 can be controlled according to the duty ratio Dtm. As a result, it is possible to change and control the mass of the water mass shown in FIG.
While having a soft washing feeling, it is possible to adjust the intensity of the stimulating feeling and the washing power. In addition, the strength of the water can be adjusted based on the change in the flow velocity. In other words, since the user's desired washing feeling and water force can be secured by the duty ratio control and the frequency control of the pulsating flow, the amount of washing water can be significantly reduced as described above. In addition, since both the duty ratio control and the frequency control are independent of the flow rate adjustment by the flow control valve 65, the water pressure adjustment that cannot be adjusted by the flow rate adjustment by the flow control valve 65 can be realized through the two controls. . That is, the flow rate adjustment of the flow regulating valve 65 can be complemented by the duty ratio control and the frequency control. Then, the adjustment of the water force or the like through the flow rate adjustment by the flow regulating valve 65 and the adjustment of the water force or the like through the above-mentioned two controls can be used to finely adjust the water force or the like.

As shown in FIG. 26, the duty ratio Dtm is set to DtmS, Dtm at the time of each cleaning of the buttocks and bidet.
In the case of performing the change control like M and DtmL, the duty ratio Dtm defines the length of the plunger stroke (movement amount), that is, the size of the water mass shown in FIGS. 19 and 24. The larger the duty ratio Dtm, the larger the water mass. Since the size of the water mass determines the size of the water mass cross-sectional area shown in FIG. 19, the cleaning area as the water landing area of the water mass increases as the duty ratio Dtm increases. Therefore, through the change control of the duty ratio Dtm, it is possible to perform not only the adjustment of the intensity of the stimulus and the amount of water, the adjustment of the cleaning power, the adjustment of the intensity of the water, but also the adjustment of the size of the washing area.
At this time, the cleaning area increases as the duty ratio Dtm increases.

As shown in FIG. 27, the pulsation frequency ftm can be controlled, or the pulsation frequency ftm and the duty ratio Dtm can be controlled simultaneously. That is, as shown in FIG. 27A, each cleaning period TA, TB, TC
In step (1), the duty ratio Dtm is set to a value DtmL, and the pulsation frequency ftm is controlled to increase or decrease in each cleaning period. For example, as shown, the pulsation frequency ftm is set to ftmS, ftmM, ftmL (ftmS <ftmM <
ftmL). Or 2
The increase / decrease control may be performed stepwise, four or more steps, or steplessly. In this way, it is possible to achieve a change in the cleaning sensation of the hardware and the software for each cleaning period and a change in the stimulus sensation, thereby making it possible to diversify the cleaning sensation.

Further, if the frequency is different, since the continuous interval of the collision of the water mass is different, the strength of the water force obtained by the collision of the water mass can be adjusted by the frequency control. Moreover, since the frequency control is not related to the flow rate adjustment by the flow control valve, the water pressure adjustment that cannot be adjusted by the flow control by the flow control valve can be realized through the frequency control. That is, the flow control of the flow control valve can be complemented by the frequency control. And
Fine adjustment of the water force and the like can be performed by using both the adjustment of the water force and the like through the flow rate adjustment by the flow control valve and the adjustment of the water force and the like through the frequency control.

In this case, each cleaning period may have the same time interval, or may have different time intervals for each cleaning period. In addition, when different time intervals are used, the time intervals may change regularly or irregularly. For example, the time intervals are tS, tM, tL (tS <tM
<TL), tS → tM → tL → tS → tM ·
・ ・ It may change regularly like tL → tS → t
It may change irregularly as S → tM → tL → tM. It should be noted that such an irregular time interval change can be achieved by loading a random number generation program and determining each time interval according to the generated random number.

As shown in FIG. 27B, the duty ratio Dtm is controlled to increase or decrease in each of the cleaning periods TA, TB, TC,. For example, as shown, the duty ratio Dtm is set to DtmS, Dtmm, DtM.
mL (DtmS <Dtmm <DtmL). Alternatively, increase / decrease control may be performed in two steps, four or more steps, or steplessly. In addition, the pulsation frequency f
tm is controlled to increase or decrease for each cleaning period as described above.
In this case, the feeling of cleaning can be further diversified. Even in this case, each cleaning period may be set to the same time interval, or may be changed regularly or irregularly.

Next, a cleaning operation performed by the local cleaning apparatus 10 of the present embodiment having the above configuration will be described. FIG.
FIG. 8 is a time chart showing the cleaning operation of the local cleaning device of this embodiment.

As shown in the figure, the local cleaning device is configured such that the user sits on the toilet seat 18 (see FIG. 1) and the seating sensor SS1
When 0 (see FIG. 7) turns on, it receives this on signal,
First, the solenoid valve 55 of the water inlet side valve unit 50 (see FIG. 2)
Is controlled to open. As a result, the supply of the cleaning water into the apparatus is started, and the heater 61 is fully energized for preliminary heating of the cleaning water prior to the cleaning. The washing water supplied by turning on the electromagnetic valve immediately after the seating is discharged to a toilet bowl portion through a pipe (not shown) or discharged to the nozzle head surface and used for head cleaning.

[0117] Water supply and hot water supply performed immediately after sitting in this manner is performed after a predetermined time has elapsed since the sensor was turned on, or when the water discharge temperature sensor SS16b has reached a predetermined temperature (for example, a temperature that is about 2 to 3 degrees lower than the hot water temperature during local washing). Stopped when detected. That is, the solenoid valve is closed, the power supply to the heater is reduced (for example, about 2% of full power supply), and the subsequent operation of the cleaning button is awaited. In this manner, the heater is fully energized for a short time after seating, and then the energization is reduced, so that the washing water is preliminarily heated and the temperature is maintained. Therefore, rapid energization control of the heater is not required during the subsequent local washing. Also,
As described above, in this embodiment, since the effect of reducing the flow rate of the cleaning water is high, it is possible to save power when energizing the heater.

Thereafter, when the washing button, for example, the buttocks washing button SWb is turned on, the solenoid valve 55 is controlled to open to supply washing water for the buttocks washing, and the heater 61 is fully energized. The heater 61 is continuously energized until the stop button SWa is operated. The closing of the solenoid valve will be described later.

By opening the solenoid valve 55, pre-nozzle cleaning for self-cleaning the nozzle head 25 is performed prior to local cleaning. That is, following the opening of the electromagnetic valve 55, the supply destination of the wash water at the wash nozzle 24 is switched to the bottom channel by the flow path switching valve 71, and the flow rate of the wash water is set by the flow control valve 65. As a result, the adjusted amount of washing water is sent to the washing nozzle 24 and is ejected from the tail water outlet 31. At this time, the cleaning nozzle 24 is at the standby position, and the nozzle head 25 is moved to the chamber 41 at the tip of the nozzle holding portion 41b.
c (see FIG. 8), this chamber 41
The nozzle head 25 is washed by the bounce water at c. By the water flow in the pre-nozzle cleaning, the cleaning water that has already been heated to an appropriate temperature by the full energization of the heater is distributed to the pipeline leading to the nozzle head 25.

Therefore, from the beginning of the main cleaning described later,
It is possible to discharge cleaning water at an appropriate temperature to a local area, and it does not give any discomfort due to discharging the low-temperature cleaning water. Further, the flow path switching of the flow path switching valve 71 downstream of the flow control valve 65 is performed first, and thereafter, the flow rate of the flow control valve 65 is set. Therefore, the flow path switching valve 71 can be driven in a state close to the no-load state where the water pressure of the washing water is hardly applied.
It is preferable that the overload is not applied. Note that even during the pre-nozzle cleaning, the nozzle head 25 can be self-cleaned with the pulsating cleaning water by driving the wave generation device 74. In this case, the pulsation frequency ft of the coil
m may be inside the dead zone or outside the dead zone.

This nozzle pre-cleaning is stopped when a predetermined time has elapsed. That is, as shown in the figure, first, the upstream side flow control valve 65 is set in a water stop state so that the cleaning water does not flow toward the cleaning nozzle 24. Thereafter, the flow path switching valve 7
Stop the pre-nozzle cleaning by stopping water 1. in this way,
Even when the pre-nozzle cleaning is stopped, the flow path switching valve 71 can be driven in a state close to a no-load state, so that the driving motor 71k is preferably not overloaded.

Subsequent to the pre-nozzle cleaning, the nozzle drive motor 42 of the nozzle device 40 is controlled to rotate in the normal direction, and the cleaning nozzle 24 is advanced from the standby position to the tail cleaning position.
Also during this nozzle advance, the solenoid valve is in the open state, and the washing water supplied at this time is discarded from a conduit (not shown) to the toilet bowl. The pipe for the waste water may be connected to a flow control valve 65 serving as a flow control switching valve, and the pipe may be switched by the valve. Further, the waste water can be supplied to a functional water unit (not shown) that generates functional water (free chlorine water), and the generated functional water can be discharged from the chamber 41c. In this way, the functional water can sterilize and clean the cylindrical portion 24a of the cleaning nozzle 24 when the nozzle advances. In the operation up to the nozzle advance, only the switching destination of the flow path switching valve and the advance destination of the cleaning nozzle (the bidet cleaning position in the case of a bidet) differ according to the operated cleaning button. The same applies to the cleaning button.

When the advancement of the cleaning nozzle 24 to the cleaning position is completed in this way, the main cleaning of the local area (the butt cleaning, the soft cleaning, and the bidet cleaning) is executed according to the operation button. As shown in the figure, in the butt washing, the following soft start is performed in order to start the pulsating flow of washing water spouting from the butt spout hole 31. First, the flow path switching valve 71 is switched to the bottom flow path, and then the flow rate control valve 65 gradually adjusts the flow rate at that time from zero to a flow rate corresponding to the set set power. It should be noted that the flow rate corresponding to the set water force may be gradually increased from a flow rate smaller than the flow rate corresponding to the set water force by a predetermined amount to the flow rate corresponding to the set water force.

In this soft start, the wave generator 7
4 also starts generating a pulsating flow. That is, the electronic control unit 80 outputs a pulse signal to repeatedly excite the pulsation generating coil 74c and reciprocate the plunger 74b. Thereby, a pulsating flow is generated as described above. In the case of bottom cleaning, coil excitation is repeated at a pulsation frequency ftm lower than that of bidet / soft cleaning as shown in FIG.
Even in this coil excitation, the duty ratio Dtm of the pulse signal is gradually increased so as to gradually approach the duty ratio corresponding to the set water force that has been set. By such a soft start, even when the set water force is large, the water discharge amount is small, and the water can be gradually discharged from the soft water discharge, which is a pulsating flow based on the small duty ratio Dtm, to the set water force. It is preferable because it does not cause discomfort or discomfort. When such a soft start is completed, the water discharge at the set water force is performed by the pulsating flow of the cleaning water, and the process proceeds to the main cleaning. In this main washing, if the water pressure is changed and set thereafter, the flow regulating valve 65 is adjusted so that the water pressure is changed.
And the pulsation flow control (duty ratio control, pulsation frequency control) by the wave generation device 74 is performed.

In general, when adjusting the flow rate of a low flow rate of washing water, fine adjustment of the flow rate lacks the reliability of the adjustment accuracy. This is one of the reasons that the flow rate cannot be reduced with the conventional local cleaning device in which the water force is adjusted by the flow rate. However, in the local cleaning device of this embodiment, since the water pressure can be adjusted as described above through the pulsating flow control (duty ratio control, pulsating frequency control), it is possible to finely adjust the water pressure with a reduced flow rate of the cleaning water. There is. Therefore, the local cleaning device 10 of the present embodiment
In the case where the water pressure near the minimum water pressure is greatly changed from the water pressure close to the maximum water pressure, the flow rate adjustment and the pulsation adjustment are performed together, and in other cases, the water pressure is adjusted by the pulsation flow control I did it. That is, the degree of change in the water force is read from the operating states of the water force strength setting buttons SWhu, SWhd, and pulsation flow control (duty ratio control, pulsation frequency control) is performed according to the result. Specifically, if the water force is set to be strong, the duty ratio Dtm is increased, the pulsation frequency ftm is reduced, or both are used. The low water setting is the opposite.

At this time, the actual flow rate of the washing water reaching the wave generating device 74 is detected by a flow rate sensor (not shown), and pulsation flow control (duty ratio control, pulsation frequency control) is performed based on the detected flow rate and the water flow change set amount. Therefore, finer water pressure adjustment is possible. In this case, the pressure sensor may be used as a flow rate sensor, or the flow rate may be indirectly detected by a signal from a switch or the like involved in setting the flow rate. In addition to the configuration in which the flow rate sensor is arranged upstream of the wave generation device 74, the flow rate sensor may be arranged anywhere as long as it can detect the amount of washing water. Can be achieved.

The main cleaning is completed as follows by operating the stop button, and then the nozzle retreat and post-nozzle cleaning are performed. That is, when the stop button is operated, the button O
In response to the N signal, in order to stop the ass washing water spouting from the nozzle, first, the flow rate is set to zero by the flow control valve 65, then, the water stop of the flow path switching valve 71 and the output stop of the pulse signal of the coil excitation, Reduce the power supply to the heater. This heater power reduction is maintained until the seat sensor SS10 is turned off.
Therefore, the temperature of the washing water does not drop carelessly until the seating sensor is turned off, and is kept at the above-mentioned temperature slightly lower than the appropriate temperature. Therefore, when the local washing is repeated while sitting on the toilet seat, the washing water can be quickly heated to an appropriate temperature, which is preferable. Also, at the time of stoppage of the rear end flushing and spouting, the flow control valve and the flow path switching valve are driven in this order, and the flow path switching valve can be driven in a state close to no load, so that the driving motor 71k is overloaded. This is preferable because it is not applied. In addition, the above-mentioned main cleaning (butt cleaning main cleaning)
The process also ends when the user separates from the toilet seat and the seating sensor SS10 is turned off before the stop button is operated, or when each of the soft and bidet washing buttons is operated during the ass washing.

When the flow path switching valve 71 is stopped, the nozzle drive motor 42 of the nozzle device 40 is controlled to rotate in the reverse direction, and the washing nozzle 24 is retracted and returned to the standby position. When the nozzle is retracted, the solenoid valve 65 is in an open state, and the washing water supplied during this time is discarded as described above. Then, if the supplied water is used as the functional water in the functional water unit and is discharged from the chamber 41c, the cylindrical portion 24a of the cleaning nozzle 24 can be sterilized and cleaned with the functional water even when the nozzle is retracted. Can be.

When the cleaning nozzle 24 returns to the standby position,
In order to start post-nozzle cleaning, the flow path switching valve 71 is switched to the bottom flow path, and the flow rate at that time is set by the flow control valve 65. As a result, the adjusted flow rate of cleaning water is sent to the cleaning nozzle 24 at the standby position and is discharged from the tail water discharge hole 31.
The nozzle head 25 is washed by the rebound water in 1c. If the functional water is applied at the time of retreating the nozzle as described above, the functional water applied to the nozzle head 25 at the time of retreating the nozzle is washed away by the flow of water in the post-nozzle washing. Even in this post-nozzle cleaning, the flow control valve and the flow path switching valve are driven in this order, and the flow path switching valve 71 can be driven in a state close to a no-load state, so that the driving motor 71k is overloaded. It is preferable because it does not occur.

When the post-nozzle cleaning is performed for a predetermined time,
In order to prepare for the next and subsequent local cleaning, the electromagnetic valve 55 is controlled to close, and the supply of the cleaning water to the local cleaning device 10 is stopped.
Thereafter, the cleaning water remaining in the water supply pipe downstream of the flow control valve 65, the flow path switching valve 71, and the cleaning nozzle 24 is discharged.
That is, in response to the closing of the electromagnetic valve 55, the pulsation generating coil 74c of the wave generating device 74 is set to have a small duty ratio D.
Excitation is repeated at tm to reciprocate the plunger 74b. In this case, the pulsation frequency ftm may be a low frequency. When the plunger 74b reciprocates in this manner, the washing water is not supplied to the wave generation device 74, but the reciprocating motion of the plunger 74b causes the cylinder 7 of the upstream washing water to move.
Suction into the inside 4a and delivery of the suctioned washing water are performed. Therefore, the washing water remaining in the above-mentioned water supply conduit or the like is gradually sent downstream by the washing water sent out by the plunger 74b, and the switching flow path of the flow path switching valve 71 (in this case, the butt flow path). Is discharged to the toilet bowl from the tail water discharge hole of the nozzle at the standby position. When the discharge of the remaining washing water is completed in this way, the flow control valve 65 and the flow path switching valve 71
, A series of ass washing operations is completed. In addition,
In the operation after the nozzle retreat, the switching destination of the flow path switching valve 71 and the cleaning nozzle 2 are changed according to the operated cleaning button.
The only difference is the destination (the bidet cleaning position in the case of a bidet) of No. 4, and the same applies to the soft cleaning button and the bidet cleaning button.

In the present embodiment, the discharge of the remaining washing water using the wave generator 74 is completed as follows.

The pulsation generating coil 74c of the wave generating device 74
Is energized to move the plunger 74b, a back electromotive force is generated in the coil with the movement of the plunger 74b, and a so-called bottom phenomenon occurs in which the energizing current temporarily decreases. Since this bottom phenomenon appears as a waveform of the current flowing through the coil, there is a correlation between the current waveform and the movement of the plunger 74b. By the way, considering the situation in which the pulsation generating coil 74c is excited at the time of discharging the residual cleaning water, before and after the residual cleaning water is completely discharged, the cleaning water is present in the cylinder 74a of the plunger 74b. Plunger movement and plunger movement in an empty condition without washing water occur. Since the cleaning water in the cylinder 74a acts as a movement resistance of the plunger 74b, if the coil excitation is performed under the same condition (in this embodiment, the same duty ratio Dtm), the cleaning water before the cleaning water in the empty state where the cleaning water does not exist. The plunger 74b moves faster. Therefore, when the plunger moves under the condition where the cleaning water is present in the cylinder 74a to the plunger movement under the condition where the cleaning water is empty, that is, when the remaining cleaning water is completely discharged, the bottom phenomenon occurs. Changes. Therefore, in the local cleaning device 10 of the present embodiment, the bottom phenomenon is detected by the bottom detection circuit 81 (see FIG. 7) to detect the completion of the discharge of the remaining cleaning water, and the stop of the flow path switching valve 71 is stopped as described above. A series of ass washing operations was completed after passing water.

FIG. 29 is a circuit diagram showing an example of the bottom detection circuit 81 for the pulsation generating coil 74c, and FIG.
It is an explanatory view for explaining a situation of a current waveform at the time of energization excitation of the pulsation generating coil 74c.

As shown in FIG. 29, the bottom detecting circuit 81
Has a comparator 82, a capacitor 83, and a resistor 84, and the resistor 84 and the capacitor 83 constitute a delay circuit composed of a CR filter circuit. The CR filter circuit delays the input signal by a delay determined by the resistor 84 and the capacitor 83 and outputs the delayed signal. Therefore, the bottom detection circuit 81 compares the input signal (the voltage generated in the detection resistor 85 reflecting the supplied current) input to the negative terminal and the delayed signal obtained by delaying the input signal with the comparator 8.
2 is processed. As a result, a pulse signal (bottom detection signal) indicating the completion of the movement of the plunger 74b is output from the bottom detection circuit 81 to the electronic control unit 80 as follows.

After completion of the post-nozzle cleaning, the pulsation generating coil 7
A pulse signal having a predetermined period (constant duty ratio Dtm) is output to the switching transistor 86 shown in FIG.
Focusing on a certain pulse, the current flowing through the pulsation generating coil 74c increases with time. When a predetermined time has elapsed from the start of energization by the pulse, the plunger 74
b starts to move, and a back electromotive force is generated in the pulsation generating coil 74c with the movement of the plunger 74b, so that a bottom phenomenon occurs in which the energizing current temporarily decreases as shown by the solid line in FIG. This current waveform (original signal waveform) is input to the minus terminal of the comparator 82 as a voltage.
On the other hand, a delay signal as indicated by a dotted line in the figure is generated by a CR filter circuit and input to the positive terminal. Therefore, these signals are calculated by the comparator 82 in consideration of the polarity of the input terminal, and thus a pulse-like signal is generated as shown in the figure.

This pulse signal (bottom detection signal)
Is generated corresponding to each pulse output to the switching transistor 86 and is input to the electronic control unit 80 at the predetermined cycle. However, as described above, when the remaining washing water is completely discharged, the plunger 74b
, The bottom detection signal at this time is input at a different cycle from that before. Therefore, from the state of the signal input, the electronic control unit 80 determines completion of the residual water discharge, stops the pulse output thereafter, and terminates a series of the butt cleaning operation. In addition, in addition to completing the residual water discharge based on the bottom detection result,
The pulse output may be stopped when a predetermined time has elapsed from the coil excitation for discharging the residual water, and the coil excitation may be stopped to terminate the cleaning operation.

Here, the pulsation generating coil 74c is repeatedly excited at a predetermined duty ratio Dtm, and the plunger 74b
The current control when reciprocating is performed will be described. Fig. 57
Represents the current waveform of the pulsation generating coil 74c. In the local cleaning device, a rated voltage is applied to the pulsation generating coil 74c, but the actual applied voltage of the coil fluctuates due to an external uncertain factor. In order to cope with such a voltage variation, a waveform control circuit 87 is provided on the base wiring of the switching transistor 86 as shown in FIG. The waveform control circuit 87 has a reference voltage Vcc (rated voltage)
Based on the result of comparison between the pulsation generating coil 74c and the actual applied voltage Vc, the peak of the current waveform of the pulsation generating coil 74c does not exceed a predetermined value during the ON time of the pulse signal from the electronic control unit 80. As a result, as shown in FIG. 57, when the applied voltage Vc exceeds the reference voltage Vcc, the current peak is cut (FIG. 57).
(C)). Accordingly, since the exciting magnetic force of the pulsation generating coil 74c is not carelessly increased, it is possible to prevent the plunger 74b from striking.

Next, a description will be given of how the control is performed when the user sets the intensity of the irritating feeling and the feeling of the amount of water and the size of the washing area. The electronic control unit 80 converts these set values into
The reading is performed at predetermined intervals over a period in which the seating sensor SS10 is on. Specifically, the operation statuses of the irritability setting switch (not shown), the water volume setting switch, and the washing area setting switch are scanned, and each set value is read. Each time these set values are read, the duty ratio D is referred to by referring to a map stored in the ROM or the backup memory.
tm and the pulsation frequency ftm are determined, and for example, during the above-described main cleaning at the time of ass washing, the excitation control of the pulsation generating coil 74c is performed at the determined duty ratio Dtm and the pulsation frequency ftm.

The map for determining the duty ratio Dtm and the pulsation frequency ftm can be exemplified by the one shown in Table 1 below.

[0140]

[Table 1]

This table shows that the irritations are SS1-S
Until S7, the amount of water is from S1 to S7, the washing area is M1 to
The user can set up to M3, and when these are set, the corresponding duty ratio Dtm and pulsation frequency f
tm is determined. In addition, the duty ratio Dtm and the pulsation frequency ftm in the table are such that the greater the set stimulus feeling or the set water feeling, the larger the duty ratio Dtm is.
The pulsation frequency ftm is set to be low. Similarly, the cleaning area is set such that the larger the set cleaning area, the larger the duty ratio Dtm and the lower the pulsation frequency ftm. Excitation control of the pulsation generating coil 74c is performed with the duty ratio Dtm and the pulsation frequency ftm determined in this manner, and as described above, the washing water is discharged in a pulsating flow. Control can be obtained.

In the local cleaning apparatus 10 of this embodiment, move cleaning can be performed as follows. First, in the present embodiment, when performing the duty ratio control as described below, the move width (nozzle reciprocating width) is made wider than that of the existing local cleaning device. Specifically, the move width, which was about 20 mm in the existing apparatus, was changed to about 26 mm in the present embodiment.
mm. The move speed is also reduced by about 30% as compared with the existing local cleaning device, and the same portion is slowly cleaned by the reduced speed. Specifically, the number of drive pulses of the nozzle drive motor per second (500 pps) in the existing device was set to 333 pps. After setting the move width and the move speed, the move cleaning is performed as follows.

For example, the pulsation frequency ftm or the duty ratio Dtm is changed and controlled according to the nozzle position while the cleaning nozzle 24 is reciprocated back and forth about the center position.
At this time, the pulsation frequency ftm is increased near the center position to enhance the softness and continuity, and near the forward end and the backward end,
The pulsation frequency ftm can be lowered to emphasize a hard feeling. Further, if the duty ratio Dtm is also reduced around the center position, a soft feeling can be emphasized. Conversely, in the vicinity of the center position, the pulsation frequency ftm can be lowered to increase the sense of hardness and stimulation, and in the vicinity of the forward end and the backward end, the pulsation frequency ftm can be increased to emphasize the softness. In addition, under the condition that the pulsation frequency ftm is constant, the duty ratio Dtm is controlled to be changed according to the move position of the cleaning nozzle 24 as described above, and when the duty ratio Dtm is constant, the pulsation frequency ftm is changed as described above. Change control can also be performed.

Further, as shown in FIG. 58 which is an explanatory view for explaining the state of the move cleaning, the nozzle head of the cleaning nozzle 24 is moved to the center position of the move range (the cleaning position WP).
c) When it is near, the duty ratio Dtm is set to the maximum duty ratio Dtmmax in the practicable setting range. Then, the nozzle head is moved from this center position to the forward end position WP.
f. The duty ratio Dt increases as the distance to the retreat end position WPb increases.
m is reduced from the duty ratio Dtmmax so that at the forward end position WPf and the backward end position WPb, the minimum duty ratio Dtmmin in the practicable setting range is set. In this way, the cleaning area is large near the center position due to a large duty ratio, and the cleaning area is reduced toward the advancing end or the retreating end, so that the local area can be move-cleaned (see FIG. 58A). Therefore, it is possible to provide various washing feelings in which the washing area increases or decreases in accordance with the change in the washing position during the move washing, that is, the stimulus sensation changes strongly according to the washing position change. Further, since the entire cleaning area over the moving range can be widened at the center position and narrowed at the front and rear ends, the cleaning area is adapted to the shape of the cleaning target local area desired to be cleaned, and the cleaning target local area, for example, bidet cleaning. There is an advantage that the target local part can be reliably washed. In this case, the maximum duty ratio Dtmmax in the practically usable setting range may be a duty ratio Dtm according to the water force set by the user.

In variable control of the duty ratio Dtm according to the nozzle position, the center position (the cleaning position WP)
c) When it is near, the duty ratio Dtm is set to the central duty ratio Dtmmid of the practicable setting range, and the duty ratio Dtm at the forward end position WPf and the backward end position WPb.
max. Then, from the center position to each end position, Dtmmid → Dtmmin → Dtmmax
Increase or decrease as shown. By doing so, the cleaning area is moderate near the center position, the cleaning area is large at the forward end / retreat end positions, and the cleaning area is increased or decreased during that time, so that the local area can be move-cleaned (FIG. 58B). reference). Therefore, in addition to various washing feelings in which the stimulus sensation changes in accordance with the change in the washing position, the effect of being able to carefully wash the front and rear of the local area to be washed with a large washing area can be obtained.

Note that the variable control of the duty ratio Dtm according to the nozzle position according to the nozzle position described in FIG.
Step duty ratio (DtmS, Dtmm, DtmL)
It can also be performed by using. By doing so, it is only necessary to switch the duty ratio Dtm in accordance with the nozzle position, so that the control is facilitated and the calculation load on the electronic control unit can be reduced.

In addition, by focusing on the increase and decrease of the cleaning power due to the variable control of the duty ratio Dtm, the move cleaning can be performed as follows. That is, the cleaning nozzle 24 is moved to the forward end position W
While moving to the side of Pf, the duty ratio Dtm is set to the maximum duty ratio Dtmmax or the duty ratio Dtm according to the set water force. During the movement to the retreat end position WPb, the duty ratio Dtm is set to the minimum duty ratio Dtmmin. In this case, when the nozzle is advanced, the large amount of duty ratio Dtm enables strong detergency to remove locally adhered contaminants. At the time of nozzle advance, as shown in FIGS. 8 and 10, since the movement trajectory of the nozzle is obliquely downward and the movement direction is downward, in conjunction with the cleaning and peeling with strong cleaning power as described above, The waste can be effectively peeled downward.

Conversely, the duty ratio Dtm can be reduced during the movement of the cleaning nozzle 24 at the forward end, and increased during the movement of the cleaning nozzle 24 at the backward end. In this case, when the nozzle is retracted, the adhered contaminants in the local area can be peeled off with a strong detergency. In this case, since the direction of movement of the nozzle is obliquely upward, the separated contaminants can hardly flow forward. Therefore, when the bidet cleaning is performed by this move cleaning, the cleanliness around the local area is enhanced, which is preferable.

In the local cleaning device of this embodiment, massage cleaning can be performed as follows. Massage cleaning period is the same time interval cleaning period TA, TB, TC
This time interval is set as a massage cycle (Dtm is fixed, for example, Dtm = DtmL) as a repetition of.
As shown in (a), the pulsation frequency ftm is regularly controlled to increase or decrease in this massage cycle. For example, the pulsation frequency f
tm to ftmS → ftmm → ftmL → ftmm → ft
mS... (ftmS <ftmM <ftmL), and is changed regularly for each massage cycle. Also, ft
mS → ftmM → ftmL → ftmS → ftmm ・ ・ ・
It can also be as follows. Alternatively, in addition to the regular increase / decrease control of the pulsation frequency ftm, as shown in FIG. 27B, the cleaning periods TA, TB, TC at the same time interval.
The duty ratio Dtm for each massage cycle
Is variably controlled regularly. For example, the duty ratio Dtm
To DtmL → Dtmm → DtmS → Dtmm → DtmL
... (DtmS <Dtmm <DtmL) It changes regularly for every washing period. Also, DtmS → Dt
mM → DtmL → DtmS → Dtmm... Alternatively, the pulsation generating coil 74c is energized at the pulsation frequency ftm during the cleaning period TA, and in the subsequent cleaning period TA, the cleaning is performed by stopping the energization of the pulsation generating coil 74c. But good.

This massage cycle is such that the frequency determined by its reciprocal is outside the dead band frequency range described above (less than about 5 Hz).
It is to be. As a result, as described above, the transition of the washing feeling and the stimulating feeling accompanying the duty ratio Dtm and the pulsation frequency ftm is clearly sensed by the user. Therefore,
The washing feeling and the stimulating feeling received from the water spout can be regularly and repeatedly given to the user, and the regular repeating can also take various forms. Further, when the stimulus is increased by increasing the duty ratio Dtm, if the pulsation frequency ftm is reduced, the sense of continuity of the stimulus is reduced, so that a strong stimulus can be emphasized. Therefore, it is possible to amplify the intensity of the stimulus and promote defecation.

Here, an example of the above-mentioned massage cleaning will be described with reference to FIG. For convenience of explanation, the pulsation frequency ftm is assumed to be constant. As shown in the figure, since the cycle of this massage cleaning is 2 seconds, the frequency is 0.5 Hz, and the user can clearly perceive the transition of the feeling of washing and irritation as described above.

Now, when the massage cleaning button is operated, the duty ratio Dtm switches between high and low at one-second intervals. Is excited. On the other hand, the duty ratio Dtm /
In the High period, the pulsation generating coil 74c is excited at a duty ratio Dtmss of a value corresponding to the water force set by the user. Therefore, the user can set the minimum duty ratio Dtm
min, washing and irritation, and set duty ratio Dt
The washing feeling and the stimulating feeling by mss are alternately received, and the alternate switching between the washing feeling and the stimulating feeling is clearly sensed. Therefore, promotion of defecation by the massage effect can be effectively achieved. Although the duty ratio Dtm in the period of the duty ratio Dtm / High is set to the above set duty ratio Dtmss, the duty ratio Dtmmax of the maximum value in the settable range is set, or the set duty ratio Dtms is set.
The duty ratio Dtm may be larger than s by a predetermined value.

In the above-mentioned massage washing,
The cleaning periods TA, TB, TC,... Are different from each other. By doing so, the duty ratio Dtm in each cleaning period or the stimulus recognition time associated with the pulsation frequency ftm is changed, so that the way of receiving a stimulus diversifies,
The feeling of defecation can be more effectively promoted. In addition, by synchronizing with the five senses such as music, light, and odor (aromatherapy), a relaxing space can be provided, and further a feeling of defecation can be further promoted.

In the local cleaning apparatus 10 of this embodiment, the fluctuation cleaning which gives a sense of comfort and comfort by irregularly changing the feeling of cleaning and irritation received from the spout can be performed as follows. The fluctuation cleaning period is the repetition of the cleaning periods TA, TB, TC,... At the same time interval, and this time interval is a fluctuation period, and the duty ratio Dtm and the pulsation frequency ftm or both are irregularly increased and decreased in the fluctuation period. Control. For example, when the duty ratio Dtm and the pulsation frequency ftm are irregularly changed, a random number generation program is loaded to generate a random number, and the duty ratio Dtm and the pulsation frequency ftm are determined by the obtained random numbers.
By doing so, the duty ratio Dtm becomes DtmS →
Dtmm → DtmS → DtmS → DtmL → DtmS ・
.., The pulsation frequency ftm is ftmm → ftm
It changes at a constant fluctuation cycle as S → ftmM → DtmL → DtmS → DtmL. Alternatively, the two change independently.

As described above, with the transition of the duty ratio Dtm or the pulsation frequency ftm, the washing feeling and the stimulating feeling received from the water discharge change irregularly. In this case, with respect to the above-mentioned fluctuation cycle in which the washing feeling and the stimulating feeling change according to the duty ratio Dtm or the pulsation frequency ftm, the frequency f determined by the reciprocal of the fluctuation cycle is the massage cycle TM.
And the same frequency (less than about 5 Hz). As a result, the duty ratio D
The change in the feeling of washing and irritation accompanying the tm and the pulsation frequency ftm is clearly sensed by the user. The changing feeling of washing and irritation is different for each fluctuation cycle, and the changing of the feeling of washing and irritation is also irregular. Will receive it. This has the following advantages due to the difficulty in predicting the stimulus change transition.

The internal anal sphincter that opens and closes the anus for defecation is an involuntary muscle of the autonomic nervous system, which contracts and relaxes unconsciously. In the above-described massage cleaning, the cycle that affects the sense of irritation changes regularly. Therefore, if the massage cleaning is continued for a long period of time, the timing of the cycle change may be predicted by the brain. For this reason, the change in the stimulus change accompanying the cycle change is also predicted, and the sympathetic nerve is dominant, which may cause the contraction of the internal anal sphincter. On the other hand, in the fluctuation cleaning in which the cycle changes irregularly, the timing of the cycle change is difficult to predict, so that the stimulus change transition accompanying the cycle change is not predicted. For this reason, the parasympathetic nervous system is predominant, and the internal anal sphincter is easily unconsciously relaxed. As a result, according to the above-mentioned fluctuation cleaning, defecation can be promoted more effectively.

If this fluctuation cleaning is performed for local cleaning after defecation, the duty ratio Dtm and the pulsation frequency ft
Because it is difficult to predict the intensity stimulus with the change of m,
The monotonous feeling at the time of local washing can be further eliminated.

In the fluctuation cleaning described above, the cleaning periods TA, TB, TC,... Are different from each other. In this case, since the stimulus recognition time associated with the duty ratio Dtm or the pulsation frequency ftm in each cleaning period is changed, it becomes more difficult to predict the stimulus sensation.
Therefore, defecation can be promoted more effectively. Also,
By synchronizing with the five senses such as music, light, and odor (aromatherapy), a relaxing space can be provided, and the defecation can be further promoted.

The power spectrum of the physical quantity such as the fluctuation width or the instantaneous flow rate which determines the transition width of the duty ratio Dtm and the pulsation frequency ftm, and the transition timing thereof, is determined by the biological rhythm of the human body such as the heart rate and the natural world. Similarly to the rhythm of the above, it can be made to be proportional to the reciprocal of the frequency. This makes it possible to give the user a feeling of relaxation, so that the parasympathetic nerve becomes dominant, the internal anal sphincter is relaxed, and the effect of promoting defecation is enhanced.

The above-described local cleaning apparatus 10 of the present embodiment has the following advantages in addition to the above. First,
The accumulator 7 provided upstream of the wave generation device 74
3 has the following advantages. FIG. 31 is an explanatory diagram for describing an effect obtained by the accumulator 73.

The water generating device 74 is driven to discharge the above-mentioned pulsating flow of washing water, and the pressure (primary pressure) of the upstream water supply pipe 51 (see FIG. 2) and the downstream side of the wave generating device 74 The pressure (secondary pressure) of the downstream water supply pipeline 72 was measured. Then, the primary pressure without the accumulator 73 provided upstream of the wave generator 74 was measured downstream of the flow regulating valve 65. The primary pressure when the accumulator 73 was provided as shown in FIG. 2 was measured downstream of the flow regulating valve, that is, upstream of the accumulator. The result is shown in FIG.

When the accumulator 73 is installed upstream of the wave generator 74 of this embodiment, the accumulator 73
Water hammer reduction, which is the original function of
1 has the following advantages in addition to the advantages described above.
That is, as shown in FIG. 31, when the pulsation flow is generated by the wave generation device 74, the pressure fluctuation of the primary pressure in the upstream water supply pipe 51 can be effectively suppressed. Therefore, it is possible to avoid the disturbance of the wash water temperature distribution of the heat exchange unit 62 by suppressing the water hammer described above and the disturbance of the wash water temperature distribution of the heat exchange unit 62 by suppressing the primary pressure fluctuation. Therefore, in the heat exchanging section 62, the heater 61
As a result, the heater control can be simplified, and the temperature of the washing water can be made uniform with good responsiveness. In addition, the pulsating flow generated by the wave generation device 74 is in a state where the primary pressure is accumulated by the accumulator 73 and amplified on the secondary side.
4 can be reduced in capacity and downsized. In addition, since the pressure amplification by the accumulator 73 is obtained, the energy required for the pressure fluctuation generation (pulsation generation) in the wave generation device 74 is reduced, and power saving can be achieved. Although the accumulator 73 is arranged close to or integrated with the wave generating device 74, the accumulator 73 may be arranged close to the flow regulating valve 65 or integrated with the device.

Further, in the local cleaning device 10 of this embodiment, when the cleaning water is discharged by periodically changing the flow of the cleaning water, the wave generating device 74 utilizing the reciprocating motion of the plunger 74b is used. The pulsating flow generated by the wave generating device 74 is prevented from appearing at a zero flow state.
Therefore, a situation in which the flow of the washing water in the pipeline is not interrupted does not occur, so that water hammer hardly occurs. Therefore, it is not necessary to make the waterway system components including the wave generation device 74 have high water hammer resistance, and the configuration and structure can be simplified, the size can be reduced, and the resin can be formed.

Further, in the wave generating device 74, when the pulsation is generated by the reciprocating movement of the plunger 74b, the condition of zero flow rate is not developed as described above, so that the water stopping structure such as the check valve 74f is provided on the washing water discharge side. Do not need. For this reason, the structure and structure can be further simplified and downsized. Since the miniaturization can be achieved in this way, the degree of freedom of the installation location of the wave generating device 74 is increased, and the attachment and integration with other members having a large mass are simplified.

Furthermore, since the flushing water with a zero flow rate does not occur when the pulsating flushing water is spouted, the following advantages are provided. The pulsation frequency is within the dead band frequency range (about 5 Hz or more)
Even so, it can be said that the continuity of the stimulation of the user receiving the water discharge tends to fade as the pulsation frequency approaches the lower limit of the dead band frequency region. However, as described above, since the flush water discharge state with the zero flow rate does not occur, the sense of continuity of the stimulus can be hardly faded. Therefore, in the flush water spouting of the pulsating flow by the wave generation device 74, the pulsation frequency adjustment range can be extended to near the lower limit of the dead zone, and the pulsation frequency adjustment over a wide range allows for a diversification of the feeling of washing and water force. Can be.

Further, in the local cleaning device 10 of this embodiment, at the end of the cleaning operation in the buttocks cleaning, the soft cleaning, and the bidet cleaning, the wave generating device 74 is driven as described above to reciprocate the plunger 74b, The remaining washing water was forcibly discharged. Therefore, the drainage of the pipe from the flow control valve 65 to the nozzle head 25 of the cleaning nozzle 24 is completely performed. Therefore, freezing of the remaining water can be reliably avoided. When driving the wave generation device 74 for draining such water, since the duty ratio Dtm of the pulsation generation coil 74c is reduced and the pulsation frequency ftm is set to a low frequency, the plunger 74b is moved at a constant speed and with a weak force. Not too much
The plunger 74b does not collide with the end of the cylinder 74a with high speed and strong force. Therefore, the striking sound of the plunger 74b can be reduced. Further, as described above, if all the communication holes of the respective nozzle flow paths are opened when the flow path switching valve 71 is drained, water can be drained from all the flow paths in the cleaning nozzle 24.

In addition, in the local cleaning device 10 of this embodiment, as described above, the user is provided with the feeling of receiving continuous water discharge while reducing the amount of water (water discharge). Increased water saving effectiveness. Therefore, power consumption for heating the cleaning water to the desired temperature by the heater 61 can be reduced. That is, the limit capacity of the outlet in the toilet room is generally 15A. However, in the existing local cleaning device used in the conventional toilet, the hot water heater capacity of the instantaneous heat exchanger is set to about 2500 watts in order to enable a sufficient temperature and a sufficient time of water discharge even in a cold season. are doing. In order to reduce the heater capacity, it has been practiced to forcibly mix air into the cleaning water to reduce the amount of cleaning water.
A heater capacity of 0 watts or more was required. For this reason,
If a local cleaning device having such a heater capacity is plugged into an outlet in a toilet room, the limit capacity of the outlet is approached, so that there is a problem that other electrical devices cannot be connected. In addition, when the hot air drying function and the indoor heating function provided in the local cleaning device are simultaneously operated, the overall heater capacity increases. Therefore, when these functions are simultaneously operated, there is also a problem that a measure such as stopping the energization of any heater has to be taken.

Further, although it is necessary to install a plurality of local cleaning devices in hotels and facilities, there is a problem that they cannot be installed due to the upper limit of power consumption. However, according to the local cleaning apparatus 10 of this embodiment, the pulsation is generated by the wave generation device 74, and the control of the pulsation frequency ftm and the duty ratio Dtm of the pulsation significantly reduces the amount of cleaning water and the power consumption. Thus, the problem of the power supply as described above can be solved.

In the local cleaning device 10 of the above embodiment,
The flow rate of the washing water reaching the wave generator 74 is detected by a flow rate sensor (not shown). Therefore, as described above, the water pressure can be finely adjusted by pulsating flow control (duty ratio control, pulsating frequency control) using the flow rate detected by this sensor, and the following advantages are provided. That is, the electronic control unit 80
When an excessive flow rate occurs due to a failure of the solenoid valve 55 or when an abnormality such as water cutoff occurs, the detection signal from the flow rate sensor is received, the drive of the wave generation device 74 is stopped,
Operations such as stopping power supply to 1 and returning the cleaning nozzle 24 to the standby position are performed. In this way, it is possible to avoid the occurrence of a tapping sound due to the idling of the plunger 74b, the idling of the heater 61, and the like.

Next, a modification of the above-described local cleaning device 10 will be described. In the following description, the same members and the same reference numerals will be used for the same members as those in the above-described embodiment or the modified examples, and the same member names will be used for members performing the same function.

In the pulsating flush water discharge described above, the flow rate and the flow rate can be variably controlled, or the flow rate can be variably controlled while keeping the flow rate constant. FIG. 60 shows an example in which the flow rate / flow velocity is increased / decreased in this pulsating water discharge, and FIG. 32 shows a deceleration control of the flow velocity vm while keeping the flow rate constant (vm2 → vm3).
This is an example. In the figure, t
2, t3 (> t2) represents an energization time for exciting the coil of the wave generation device, T2 represents a pulsation generation period of pulsation generated by the wave generation device, and V represents a pulsation generation coil 74c of the pulsation generation device. Represents the voltage applied to the switching transformer for turning ON / OFF the current supply, in other words, the coil excitation voltage. Also, in the figure, (a) shows the state of the duty ratio of the pulse signal, (b) shows the relationship between the voltage V and time, and (c) shows the relationship between the flow rate vm and the time of the flushing water discharged. ing.

First, an example of increasing / decreasing the flow rate / flow velocity will be described with reference to FIG. As described above, the plunger 74b driven by the excitation of the pulsation generating coil 74c
When the pulsating flow is used as the washing water, the flow rate is defined according to the stroke length of the driven plunger 74b, and the flow rate is defined according to the driving speed of the plunger 74b, that is, the suction force of the plunger 74b. In order to reduce the washing water speed in generating the pulsation flow, the energizing voltage V to the pulsation generation coil 74c (that is, the current flowing to the pulsation generation coil 74c) is reduced while maintaining the duty ratio Dtm (V
2 → V2 ′; see FIG. 60 (b)). As a result, the attraction force of the plunger 74b decreases, and the drive speed of the plunger 74b decreases due to the decrease in the energization voltage. Since the duty ratio is the same in the pulsation generation period T2, the movement distance (stroke length) of the plunger 74b is reduced by the reduction of the plunger drive speed during the same energization time t2, and the washing water determined by the plunger movement amount The flow rate is reduced. Therefore, if the energizing voltage to the coil is reduced under the condition where the duty ratio is constant, both the flow rate and the flow velocity of the washing water can be reduced. When the flow rate and the flow velocity are increased, the reverse is true. Therefore, if the energization voltage to the coil is controlled to increase or decrease under the condition where the duty ratio is constant, the flow rate and the flow velocity of the washing water can be simultaneously increased and decreased.

Next, an example in which the flow velocity vm is decelerated (vm2 → vm3) while keeping the flow rate constant will be described with reference to FIG. In order to accelerate / decelerate only the flow rate without changing the flow rate of the washing water, the following control is performed. First, FIG.
As shown in FIG. 2B, the supply voltage V to the pulsation generating coil 74c is reduced. At this time, under the condition where the duty ratio is constant, the flow rate and the flow velocity are reduced due to the shortening of the stroke length as described above. Therefore, in order to compensate only for the insufficient flow rate, as shown in FIG. Is increased (t2 / T2 → t3 / T2). When the duty ratio is increased in this manner, the coil excitation period also changes from t2 to t3.
Therefore, the plunger 74b can be driven by a regular stroke, and the stroke length of the plunger 74b can be kept constant. Therefore, only the flow velocity can be reduced while keeping the flow rate constant. This phenomenon can also be explained by the fact that the area S2 during one cycle is equal in the left and right graphs (c) showing the relationship between the flow velocity and time. In the case of speed-up control, the reverse is true. Of course, in addition to this, the plunger 74
In the case where pulsation is constantly generated at the stroke limit of b, the flow rate does not change because the drive stroke length does not change. Variable control becomes possible.

Next, the local cleaning apparatus 10 according to the above-described embodiment will be described.
Another modified example will be described.

FIG. 33 is a block diagram showing the configuration of a water channel system included in the local cleaning device 100 of the modified example, FIG. 34 is a block diagram showing the configuration of a water channel system included in the local cleaning device 110 of another modified example, and FIG. It is a schematic block diagram which shows the schematic structure of the flow control switching valve 75 of these modifications in a partially broken manner. FIG.
FIG. 13 is a block diagram illustrating a water channel configuration of a local cleaning apparatus 120 according to another modification. FIG. 37 is a cross-sectional view showing a configuration of a flow control switching valve 77 disposed in this waterway system, and FIG.
FIG. 8 is an explanatory diagram for explaining the water pressure in the water channel system of the local cleaning device according to the modified example having the intermittent valve. FIG. 39 is a block diagram illustrating a water channel configuration of a local cleaning device according to another modification. It is.

(1) As shown in FIG. 33, in the local cleaning apparatus 100 of this modified example, a wave generation unit 70 having an accumulator 73 and a wave generation device 74 is provided downstream of the heat exchange unit 60. Wave generation unit 7
A flow control switching valve 75 is provided downstream of the zero. This flow control switching valve 7
Numeral 5 is provided separately from the cleaning nozzle 24, and supplies the cleaning water to any one of the nozzle flow paths (the nozzle flow paths for ass cleaning, soft cleaning, and bidet cleaning) of the cleaning nozzle 24. At the same time, the flow is switched, and the flow rate of the washing water flowing through each of the switched flow paths is adjusted. Therefore, the flow control switching valve 75
Thus, the water supply switching of each nozzle flow path in the cleaning nozzle 24,
In addition, the flow rate of the washing water to each flow path can be adjusted.
For this reason, in the above embodiment, two valves, the flow control valve 65 for adjusting the flow rate to the cleaning nozzle 24 and the flow path switching valve 71 for switching each nozzle flow path of the cleaning nozzle 24, are used. In this modification, only one flow control switching valve 75 is required. Therefore, there are advantages in manufacturing, such as reduction in the number of assembly steps and cost due to the reduction in the number of parts.

In the local cleaning device 100, the flow path downstream of the wave generation unit 70, that is, the flow path from the wave generation unit 70 to the flow control switching valve 75 and the flow from the flow control switching valve 75 to the cleaning nozzle 24. Downstream water supply pipeline 72
To the upstream water supply line 5 upstream of the wave generation unit 70.
A flexible pipe having a hardness higher than 1 was used. Therefore, even if the flow control switching valve 75 is separated from the washing nozzle 24, expansion and contraction, expansion and contraction of the water supply pipe itself can be made less likely to occur, and the influence of pulsation damping due to this expansion and contraction can be suppressed. Therefore, even in this modified example, the pulsation damping in the flow path can be reduced and the pulsating flow of the washing water can be sent to the washing nozzle 24.

(2) The local cleaning device 110 of another modification shown in FIG. 34 has separate cleaning nozzles for the buttocks and bidet, and each nozzle is connected to the flow control switching valve 75 of the above modification. Let me. The flow control switching valve 75 is connected to the buttocks washing nozzle 114 and the bidet washing nozzle 116,
The supply destination of the washing water is switched to the nozzle flow paths (the tail cleaning nozzle flow path and the bidet cleaning nozzle flow path) for each of the cleaning nozzles, and the flow rate of the cleaning water flowing through the switched flow paths is adjusted.

Cleaning nozzles 114 and 11 for buttocks and bidets
6 is mounted on the nozzle device 112. The nozzle device 112 is configured to separately advance and retreat the cleaning nozzles from the standby position to the respective cleaning positions, and is driven and controlled by the electronic control device 80. Thus, the local cleaning device 11 having separate cleaning nozzles for the buttocks and the bidet
Even if it is 0, as described above, it is possible to set various washing feelings and water forces through the control of the pulsation frequency ftm and the duty ratio Dtm while enhancing the effectiveness of water saving. Also,
Similarly to the above-described local cleaning device 100, the downstream water supply pipe 72 downstream of the wave generation unit 70 is a flexible pipe having a higher hardness than the upstream water supply pipe 51, so that the separate pipes for the buttocks and the bidet are separately provided. In the local cleaning apparatus 110 having the above-described cleaning nozzle, the pulsation attenuation in the flow path can be reduced, and the pulsating flow of the cleaning water can be sent to each of the buttocks and bidet cleaning nozzles.

The flow control switching valve 75 of these modifications can be, for example, a drum type flow control switching valve as shown in FIG. In the flow control switching valve 75, the drum casing 7
A drum 75b is rotatably (forward / reverse) inside 5a. A water supply groove 7 is provided on the surface of this drum for each water supply port.
5c is formed, and the degree of overlap between each water supply groove of the drum and the water supply port is adjusted to switch the water supply destination and adjust the flow rate of water supply to the switched water supply destination. According to the drum type flow control switching valve 75, pulsation damping can be more effectively suppressed as compared with a switching valve using the elasticity of an elastic body such as a diaphragm.

In the apparatus provided with the buttocks cleaning nozzle 114 and the bidet cleaning nozzle 116, either the buttocks or bidet cleaning nozzle is used to form a soft water discharge hole and a nozzle flow path therefor. Can be what you have. Further, a cleaning nozzle for soft cleaning may be provided separately from the above-mentioned two cleaning nozzles.

(3) The local cleaning device 120 of the modified example shown in FIG. 36 is characterized in that the cleaning water is discharged in an intermittent flow. In other words, the method is characterized in that the flow of the washing water is intermittently reduced to zero instantaneously by pressurizing the supplied washing water and interrupting the washing water flow downstream thereof. That is, the local cleaning device 120 of this modification includes a pressurizing device 122, a flow regulating valve 124, and an intermittent flow generating unit 126 on the downstream side of the heat exchange unit 60 in the water channel system. The cleaning water is discharged from the cleaning nozzle 24 via

The pressurizing device 122 is provided with a pressurizing pump such as a line pump, and pressurizes the washing water supplied from the heat exchange unit 60 and supplies it to the downstream device. Then, the pressurizer 122, the pump displacement to increase to about 0.2 MPa {about 2 kgf / cm ^2} a primary pressure of about 0.13MPa pressure regulated by the pressure regulating valve 54 {1.3kgf / cm ^2} Have. It should be noted that the pressure regulated by the pressure regulating valve 54 (about 0.13 MPa {1.3 kgf / cm ² })
It is almost the same as the conventional product.

The intermittent flow generating unit 126 is connected to the accumulator 73 from the upstream side and the intermittent valve 12 for intermittently connecting the flow path.
8 is provided. As shown in FIG. 37, the intermittent valve 128
The motor 128a connects the valve body 128b to the housing 12
8c. Then, the intermittent valve 128
Connects the internal valve body flow path 128d with the valve flow path 128e in synchronization with the rotation cycle of the motor 128a to interrupt the flow path. Accordingly, the intermittent valve 128 outputs the intermittent flow of the cleaning water flow pressurized by the pressurizing device 122 (intermittent flow).
Then, the intermittent washing water is supplied to the washing nozzle 24. The state of generation of this intermittent flow will be described with reference to the drawings as follows.

As shown in FIG. 38, the water supply pressure from the water supply source
Is Pw, the washing water is supplied by the pressure regulating valve 54 to about 0.1
3MPa ｛1.3kgf / cm^TwoThe pressure is reduced to｝
To the pressurizing device 122, and the pressurizing device 122
2MPa about 2kgf / cm ^TwoIt is boosted to｝. Soshi
This washing water is periodically washed by the intermittent valve 128.
The flow is intermittent due to the intermittent flow, and is discharged from the cleaning nozzle 24.
Be watered. The intermittent cycle DT of the intermittent flow at this time is the
28 times the motor rotation period of 28
Variable through rotation control of motor 128a by device 80
It can be controlled. In this modification, the intermittent cycle D
The dead band defined by the frequency specified by T (intermittent frequency)
Frequency range (5 Hz or more, preferably 10 to 100 H
z). Therefore, the flow path is interrupted.
Of the intermittent washing water obtained from the washing nozzle 24
In this modification, cleaning is performed in the same manner as in the above-described embodiment.
By controlling the frequency of spout water, the amount of flush water is constant.
Also, it is possible to diversify the washing feeling and adjust the water level. Ma
Also, the washing water flow rate can be changed by adjusting the amount of washing water.
Diversification of washing feeling
Water pressure adjustment can be performed. Also, by frequency control
As mentioned above, since the water pressure can be adjusted,
In case of water shortage, keep the water level desired by the user
Can be In other words, the cleaning feeling desired by the user
And water force can be secured by intermittent flow frequency control.
As described above, the amount of washing water can be significantly reduced.
You.

According to this modification, there are the following advantages. As shown in FIG. 37, the intermittent valve 128 is connected to the valve body flow path 12.
The 8d opening has a slope 128f. This inclined part 1
28f functions to gradually close the valve flow path 128e when the valve body 128b rotates the valve flow path 128e to the shielding side. Therefore, at the time of driving the intermittent valve for generating the intermittent flow, it is possible to suppress the occurrence of water hammer when the flow path is cut off due to the valve driving.

In this modification, as shown in FIG. 38, the pressure (approximately 0.2
a (approximately 2 kgf / cm ² ｝) as the maximum pressure.
An intermittent flow in which the pressure drops from this maximum pressure due to the intermittent flow at 28. Therefore, if the boost pressure by the pressurizing device 122 is shifted up and down, this intermittent flow can be shifted up and down similarly to the case of the pulsating flow described above (see FIG. 5), and the flow rate can be adjusted.

(4) In the local cleaning apparatus 130 of another modified example shown in FIG. 39, the cleaning water is pressurized by the pressurizing device 122 and the intermittent flow generating unit 126 to produce intermittent cleaning water. Cleaning nozzles 114 and 116 for the buttocks and bidet
Is advanced and retracted by the nozzle device 112, and the flow control switching valve 75 switches the flow path to the nozzle and adjusts the flow rate. After the flow rate is adjusted, the above-mentioned intermittent washing water is discharged from each of the ass and bidet washing nozzles. In this manner, the apparatus having the separate washing nozzles 114 and 116 for the buttocks and the bidet may be configured to discharge intermittently flowing washing water.

In order to improve the soft feeling in each local cleaning, a modification can be made so that air is forcibly mixed into the cleaning water. FIG. 40 is an explanatory diagram illustrating the configuration of a cleaning nozzle 140 according to a modification in which air is forcibly mixed.
5 is a graph showing a relationship between an air mixing amount when air is forcibly mixed into the cleaning water and a cleaning area of the cleaning water discharged by the air mixing. FIG. 42 is an explanatory diagram illustrating a configuration of a cleaning nozzle 140A according to another modification in which air is forcibly mixed.

(1) As shown in FIG. 40, the cleaning nozzle 140 of the modified example has a nozzle head 142 in which each of the head flow paths 34 to 36 of each of the water discharge holes 31 to 33 for buttocks cleaning, soft cleaning, and bidet cleaning. First to third air passages 143 communicating with
145. These air passages are provided for the cleaning nozzle 1
In the upper compartment 140b of the 40 cylindrical portion 140a,
The air pipes 146 to 148 are individually connected. Compressed air sent from the air pump 149 is supplied to each of the air pipes at a flow rate adjusted by the air flow rate adjustment valve 150. The air flow control valve 150 also switches air supply to each of the air pipes 146 to 148.
Therefore, the compressed air is blown into each of the head channels of the nozzle head 142 via the respective air channels. The wash water flowing in each of the head flow paths in a pulsating flow or an intermittent flow is subjected to frictional force generated by blowing compressed air while being discharged in a water mass as described above due to water discharging in the pulsating flow or the intermittent flow. For this reason, by blowing compressed air, the cleaning water is discharged as a minute water mass as shown in the figure. Even if these minute water bodies are ejected from the water discharge holes, they are in a state in which they are hardly combined with each other again.

When air is mixed in this manner, as shown in FIG. 41, as the flow rate of the blown air is increased, the water mass is finely dispersed and the cleaning area is increased. Therefore, when the amount of water is reduced and the cleaning range is narrowed, the cleaning range can be expanded by increasing the air flow rate. Further, as shown in FIG. 18, the pulsating flow or intermittent flow of cleaning water discharged from the water discharge hole increases to a large water mass, but by blowing air, the water mass is utilized by utilizing the shear force of the air. Can be made small, so that a soft washing feeling can be obtained. In this way, by blowing air, it is possible to increase or decrease the cleaning range and adjust the cleaning intensity. In addition, the washing strength and the like can be more finely adjusted in combination with the adjustment of the water force and the washing feeling in the pulsating flow or the intermittent flow. Furthermore, the amount of washing water can be reduced by the amount of air mixing, and a soft feeling of washing can be provided while enhancing the effectiveness of water saving.

(2) As shown in FIG. 42, a cleaning nozzle 140A according to another modified example is provided with a head channel 34 for butt cleaning, soft cleaning, and bidet cleaning in the nozzle head 142A.
The first to third air pipes 151 to 153 are inserted and provided in the water discharge holes 31 to 33, respectively. This first one
The third air pipes 151 to 153 are connected to the air pump 1 described above.
49 is connected. Therefore, the compressed air from the first to third air pipes 151 to 153 is directly jetted into the cleaning water flowing through the respective head flow paths 34 to 36. According to this configuration, since the air is blown directly into the cleaning water flow, the action of dispersing the cleaning water flow can be further enhanced.

The cleaning nozzle can be modified so that natural suction is achieved by utilizing the negative pressure of the cleaning water flow. FIG. 43 and FIG.
FIG. 4 is a schematic cross-sectional view of a main part of a cleaning nozzle of each modified example for achieving natural suction. FIG. 45 is a schematic view schematically showing a cleaning nozzle of another modified example for natural suction, and FIG.
Is a graph showing air entrainment characteristics in another modified example.

(1) As shown in FIG. 43, the nozzle head 142B of the cleaning nozzle of this modified example includes a flow path in a part of each of the head flow paths 34 to 36 for butt cleaning, soft cleaning, and bidet cleaning. Orifices 154 to 156 to reduce the area
Having. Further, downstream of each of the orifices, an outside air introduction passage 157-1 through which outside air is introduced from the back of the nozzle head.
59. According to this configuration, a negative pressure is generated when the flow of the washing water flowing out of each orifice increases the flow path area, and air is mixed into the washing water from each of the outside air introduction passages 157 to 159. According to this modification, there is no need to provide an air pump or the like, so that the configuration can be simplified. In this case, the orifices corresponding to the head channels 34 to 36 for buttocks washing, soft washing, and bidet washing may have different orifice diameters for each of the buttocks washing, soft washing, and bidet washing. For example, the orifice diameter is defined so that the amount of air entrainment in soft cleaning / bide cleaning is larger than that in bottom cleaning. In this way, the degree of air incorporation differs between the bottom cleaning, the soft cleaning, and the bidet cleaning, so that the cleaning feeling can be changed for each cleaning operation.

(2) In another modified example shown in FIG. 44, the nozzle head 142C is provided with an outside air introduction pipe 160 disposed in the nozzle flow path 36 for bidet cleaning. Even in this case, air can be directly introduced into the washing water stream. The same applies to the nozzle flow path for ass cleaning and soft cleaning.

(3) In another modification shown in FIG. 45, the following configuration is provided to improve the efficiency of natural intake. In addition, for convenience of explanation, one water discharge hole (butt water discharge hole) will be described, but the same applies to a soft water discharge hole and a bidet water discharge hole. Another modification is the nozzle head 161.
In addition, an outside air entrapment chamber 162 is provided. In the nozzle head 161, the orifice 163 and the buttocks discharge hole 31 in the buttocks cleaning head flow path 34 are opposed to each other with the outside air entrainment chamber 162 interposed therebetween.
Is provided with an outside air introduction passage 164. With this configuration, a so-called jet pump having the washing water discharged from the orifice 163 as the driving fluid, the air from the outside air introduction passage 164 as the driven fluid, and the buttocks discharge hole 31 as a throat is configured. .

In this modification, since the orifice 163 is provided in the same direction as the direction in which the washing water is discharged, the damping of the water force can be suppressed. Further, the amount of air entrainment can be increased by the action of the jet pump. Therefore, the amount of washing water can be reduced by an amount corresponding to the increase in the amount of air, and the effectiveness of water saving can be further improved, and a more soft feeling of washing can be provided. Furthermore,
Since the orifice 163 and the flush water spouting direction are the same, there is no bending of the pipe downstream of the orifice. Therefore,
Since the collision of the washing water does not occur at the bent portion of the pipe, there is no energy loss and the flow velocity is not reduced.

In this modified example, the air entrainment amount was measured by variously changing the area ratio (S2 / S1) between the orifice diameter S1 and the throat diameter S2. When this air entrapment amount is expressed as a ratio of air to water (air entrapment ratio%) and graphed, as shown in FIG. 46, if this area ratio is 1 to 4, a large air entrapment of 40 to 80% is obtained. Made with quantity. In other words, if the jet pump is configured as in this modified example and the above-mentioned area ratio is set to 1 to 4, it is about 1 .4 compared to the one having the orifice and the outside air introduction passage as shown in FIG.
The air entrainment amount can be increased by about 2 to 2 times, which is advantageous for improving the effectiveness of water saving and for giving a soft feeling of washing. In addition, the air entrapment amount was measured as follows. That is, a microwire air flow meter of the hot wire type is connected to the air suction port to directly measure the air flow rate, calculate the air entrapment rate from this air flow rate and the flow rate of water supply to the nozzle, and use this as the air entrainment amount. 46 graphs were obtained.

FIG. 47 is a schematic perspective view schematically showing an internal structure for explaining a nozzle head 170 in which the cleaning nozzle shown in FIG. 45 is further modified, and FIG. FIG. 49 is a graph showing the entrainment characteristics of air in the head 170, and FIG.

As shown in FIG. 47, the nozzle head 170 of this modification comprises, similarly to the nozzle head 161, an outside air entrapment chamber 162, an orifice 163, a tail water discharge hole 31 as a throat, and an outside air introduction passage 164. Jet pump. The nozzle head 170 has a cleaning water vortex chamber 171 between the orifice 163 and the head channel 34 for cleaning the buttocks. The washing water vortex chamber 171 has an inner peripheral wall that is larger in diameter toward the bottom and that is inclined from the bottom to the orifice. This cleaning water vortex chamber 17
Since the head flow path 34 is eccentrically connected to 1 as shown in the figure, the cleaning water flowing into the swirl chamber swirls along the inclined inner peripheral wall as indicated by an arrow SY in the figure. Then, the cleaning water swirled in this manner is discharged while passing through the orifice 163 and passing through the outside air entrainment chamber 162 to discharge a large amount of air at the time of discharging water from a throat (butt water discharge hole).

The washing water discharged in this way is affected by the swirling force of the washing water itself, and adopts a spiral water discharging form as schematically shown in the figure. In this modified example, when the washing water flows into the washing water vortex chamber 171, the washing water is supplied from the head channel 34 for buttocks washing in the above-described pulsating flow or intermittent flow. Therefore, the flush water discharged in this manner adopts a spiral (cone-shaped) water discharge form in which air is mixed as shown in the figure, while maintaining the above-described water discharge property in the pulsating flow or the intermittent flow. . The above-mentioned swirling force of the washing water is determined by the inflow speed (washing water speed) of the washing water into the washing water swirl chamber 171, and this inflow speed defines the degree of swirling of the washing water in the washing water swirl chamber 171. Also, the degree of aeration is determined by the washing water speed. Therefore, by adjusting the washing water inflow speed (washing water speed) into the washing water vortex chamber 171, it is possible to variously adjust the degree of spiral expansion and the degree of air mixing in the spiral water discharge form. Since the extent of the spiral affects the cleaning area, in this modification, the cleaning area can also be adjusted. The washing water speed can be variously changed by frequency adjustment or duty ratio adjustment in a pulsating flow or an intermittent flow, and flow adjustment by a flow regulating valve. Therefore, it is possible to discharge water with various cleaning areas and discharge water with various air mixing amounts, and it is possible to provide a more comfortable cleaning feeling, a soft feeling, and the like. In addition, it is possible to realize water pressure adjustment at a low flow rate by a pulsating flow or an intermittent flow. FIG. 47
Shows the state of spouting of the washing water instantaneously. Since this state occurs continuously, the actual spouting form is a hollow cone-shaped KS shown in the figure formed of the spouting washing water. Becomes

Also in this modified example, when the area ratio (S2 / S1) of the orifice diameter S1 and the throat diameter S2 was variously changed and the air entrapment amount was measured, the result shown in FIG. 48 was obtained. That is, as compared with the above-described nozzle head 161 having no vortex chamber (see FIG. 45), the amount of air entrainment can be increased about 1.3 to 2 times, and the effectiveness of water saving is improved. It is more advantageous from the viewpoint of the addition of It is preferable to set the area ratio to about 1.2 to 3 from the viewpoint of increasing the amount of air entrainment. The air entrainment was measured by the same method as described above.

As shown in FIG. 49, the water discharge form of the cone-shaped KS is adopted, so that the water discharged from the nozzle head 170 of this modification arrives at the part to be cleaned so as to surround the center of the part to be cleaned. Water. Therefore, cleaning can be performed in a state in which the dirt on the portion to be cleaned is confined in the cone-shaped KS, and the cleaning effect can be enhanced. Further, in the water discharge form of the cone-shaped KS, the cleaning water is not simply diffused and discharged, but the cleaning water is rotated (turned) along the outer wall of the cone. For this reason, air entrapment indicated by a white arrow in the drawing occurs in the inside of the cone, and a dripping portion KSC in which the washing water hangs down in a substantially columnar shape is formed substantially at the center of the portion to be washed. Therefore, the center of the portion to be cleaned can be cleaned even with the hanging portion KSC while being washed with water so as to surround the portion to be cleaned.

The nozzle head 1 of the modification shown in FIG.
Numeral 70 defines the degree of spiral expansion and the degree of air entrapment in the spiral water discharge form by the flow rate of cleaning water into the cleaning water vortex chamber 171 (the cleaning water velocity). Therefore, only by supplying the continuous flow of cleaning water that has been subjected to normal flow rate adjustment using a flow rate adjusting valve or the like, it is possible to discharge water in various cleaning areas and water with various amounts of air mixed in. Soft feeling and the like can be imparted. That is, the above-described nozzle head 17
According to 0, there is no need to supply washing water in a pulsating flow or an intermittent flow state. The existing device can be easily improved to give a feeling or the like.

In addition, the nozzle head 170 determines only the extent of the spiral in the spiral water discharge mode by the cleaning water vortex chamber 1.
It is defined by the washing water inflow speed into the 71 (washing water speed). Therefore, only by supplying a continuous flow of washing water whose normal flow rate has been adjusted by a flow rate adjusting valve or the like, it is possible to discharge water in various washing areas depending on the extent of the spiral. For this reason, in the above-mentioned nozzle head 170, a comfortable washing feeling, a soft feeling, and the like can be imparted even when the configuration relating to the supply of the washing water and the entrainment of air in the state of the pulsating flow or the intermittent flow is omitted.

On the other hand, if the washing water is guided to the washing water vortex chamber 171 in the state of the pulsating flow, as described with reference to FIG. The flow rate of the washing water flowing into the 171 can be increased or decreased. The washing water speed adjustment by the above-described duty ratio control has a higher adjustment sensitivity than that of the speed control through the flow rate adjustment by the flow rate adjusting valve, and enables fine speed adjustment. Therefore, if the cleaning water is guided in the state of the pulsating flow, the degree of the spiral spread in the spiral water discharge form (ie,
Since the cleaning area can be finely adjusted through fine speed adjustment, it is useful for diversification of the cleaning experience.

According to the nozzle head 170,
There are the following advantages. When the cleaning water is spouted from the water discharge hole to land on the surface to be cleaned, the force F exerted by the cleaning water is:
It is expressed by the following equation. Here, ρ is the density of the washing water, V is the water discharge speed, Q is the water discharge amount, and S is the water discharge hole opening area. F = ρ · V · Q = ρ · (Q ² / S)

In the water discharge mode of the nozzle head 170, when the wash water is discharged from the water discharge hole (the bottom water discharge hole 31), the wash water is discharged while rotating, forming a cone-shaped KS. Therefore, the state of the passage of the washing water at the opening of the spout hole is that the washing water does not pass through the entire area of the opening and is discharged, but there is no washing water at the center of the opening and the washing water passes in a ring along the wall surface. Water is discharged. For this reason, in the nozzle head 170, the actual water discharge hole area S1 when the cleaning water passes through the water discharge hole has an annular area along the water discharge hole wall surface, and is smaller than the water discharge hole opening area S. Therefore, comparing the force F when the wash water is simply discharged from the water discharge hole with the force F1 in the water discharge form of the cone shape KS, F1 is represented by the following equation, and since S> S1, F1> It becomes F. F1 = ρ · (Q ² / S1)

Further, in the nozzle head 170, since air is mixed into the spouted washing water, the area occupied by the washing water is reduced by the amount of air mixing, so that the actual spouting hole area S1 becomes smaller, and F1 Becomes larger. Therefore, according to the nozzle head 170, the force F1 exerted by the cleaning water can be increased even with the same water discharge amount Q, so that a small water discharge amount is required to obtain the force F required for local cleaning.

The main factor of reducing the actual water discharge hole area S1 and increasing the force F1 is that the cleaning water is swirled to discharge water. Therefore, the effectiveness of water saving can be enhanced only by giving a swirl to the cleaning water and discharging the water. And by mixing in air as described above,
The softness can be enhanced by using the aerated water discharge. Therefore, according to the nozzle head 170, it is possible to execute water discharge that can exhibit a soft feeling while saving water. In addition, in the nozzle head 170, since the washing water is spouted in a pulsating flow or an intermittent flow, in addition to the effect of the above-described swirling and the effect of air mixing, the above-described pulsating flow or intermittent flow can be obtained. The effect (for example, water saving effect etc.) which was achieved can be exhibited.

Further, air may be forcibly mixed into the nozzle head 170 using an air pump or the like. In this way, the amount of air mixed in increases, so that a more soft feeling can be provided. In a case where forced air mixing is performed in this way, the above-described pulsating flow or intermittent flow of washing water is discharged while forced air mixing is performed, or the forced air mixing is stopped. It is also possible to discharge water with a pulsating flow or intermittent flow of cleaning water.

Next, another modification utilizing the cleaning water vortex chamber 171 described in the nozzle head 170 will be described.
FIG. 50 is a schematic cross-sectional view of a main part of a nozzle head 200 according to another modification, FIG. 51 is a schematic perspective view in the X direction, and FIG.
5 is a perspective view of a bottom cover 210 of the nozzle head 200. FIG.

As shown, the nozzle head 200
Are the water discharge holes 31 to 31 for ass washing, soft washing and bidet washing.
33 is provided on the upper cover 202 mounted on the upper surface of the head.
The upper lid 202 is detachable, and each water outlet 3
Since various types having different hole diameters from 1 to 33 are prepared, a plurality of combinations of the hole diameters of the water discharge holes can be selected. An air gap chamber 204 communicating with each of the above water discharge holes is formed on the lower surface of the upper lid 202, and a head flow path for each water discharge hole is connected to the air gap chamber 204 as follows.

The first head flow path 34 for tail water discharge is directly connected to the air gap chamber 204, and the end of the flow path faces the tail water discharge hole 31. As shown in FIGS. 50 and 51, the second head flow path 35 for soft water discharge and the third head flow path 36 for bidet water discharge are formed at the lower end of the nozzle. It is formed by mounting the lid 210 in a watertight manner. The second head flow path 35 and the third head flow path 36 are eccentrically connected to a soft cleaning water vortex chamber 206 and a bidet cleaning water vortex chamber 208 which are formed in the nozzle head and are closed when the bottom cover 210 is mounted. ing. In this case, as shown in FIG. 51, the second head flow path 35 reaches the soft cleaning water vortex chamber 206 from the right side of the nozzle head, and the cleaning water from this head flow path is eccentric from the connection port 206a into the vortex chamber. Get in. The third head flow path 36 reaches the bidet cleaning water vortex chamber 208 from the left side of the nozzle head, and the cleaning water from this head flow path eccentrically enters the vortex chamber from the connection port 208a. The two vortex chambers have a larger diameter toward the bottom similarly to the washing water vortex chamber 171 described above, and the orifices 207 and 20 at the upper end from the bottom.
It has an inner peripheral wall inclined to 9.

Further, an outside air introduction passage 212 communicating with the air gap chamber 204 and introducing air into the gap chamber is provided in the bottom cover 210 and the head end. Therefore, the first to third nozzle channels 34 to
When the cleaning water is discharged from 36 through the air gap chamber 204 toward the respective water discharge holes, air is drawn in from the outside air introduction passage 212 in the air gap chamber 204. In the case of the soft water discharge and the bidet water discharge, the cleaning water is swirled in the respective vortex chambers, and the swirled cleaning water passes through the orifices 207 and 209, passes through the air gap chamber 204, and throats (soft water discharge holes). 32, when the water is discharged from the bidet discharge hole 33), the water is discharged with a large amount of air entrained therein. Therefore, at the time of ass washing, water is spouted with intermittent or pulsating flow of washing water spouted with air mixed in, and during soft washing and bidet washing, air is sprinkled with intermittent or pulsating washing water spouting. Water can be discharged in a state where mixing and swirling of the cleaning water are achieved. Then, at the time of each washing, the above-mentioned effects obtained by washing water spouting, intermixing of air, and swirling of washing water in an intermittent flow or a pulsating flow can be exhibited. It should be noted that, similarly to the nozzle head 170, the nozzle head 200 can be applied to a device that discharges washing water in a continuous flow.

Further, in the nozzle head 200, the bottom cover 210 is provided with an upright plate 213 located at the center of the bottom of the bidet washing water vortex chamber 208. Since the standing plate 213 enters the bidet cleaning water vortex chamber 208, it interferes with the swirling cleaning water near the center of the vortex chamber. Therefore, the swirling state (the amount of swirling) of the washing water in the bidet washing water vortex chamber can be controlled by adjusting the dimensions such as the height and width of the standing plate 213. For this reason, by controlling the turning state, the bidet spouting can be performed each time with the air entrainment amount being substantially the same.

Next, another modified example of the nozzle head 170 will be described. FIG. 53 is a schematic perspective view schematically illustrating the internal structure of the nozzle head 220 in a see-through manner for explaining the nozzle head 220 of this modification.

As shown in the drawing, the nozzle head 220 of this modified example is, similarly to the nozzle head 170 described above, a jet pump comprising an outside air entrainment chamber 162, an orifice 163, a water discharge hole 221 as a throat, and an outside air introduction passage 164. And a cleaning water vortex chamber 171 below the orifice 163. As a nozzle water supply path for the cleaning water, the cleaning water vortex chamber 171 has an eccentric path 222 eccentrically connected to the cleaning water vortex chamber 171, and a center-oriented path 223 connected to the vortex chamber so as to direct the center thereof. In addition, a cleaning water supply unit (not shown) for supplying cleaning water is provided independently for both paths. This washing water supply unit has a center-oriented path 2
It is possible to supply wash water only to the wash water 23, and to simultaneously supply wash water to both the center-directed path 223 and the eccentric path 222. At the time of the water supply, the flow rates Q1 and Q2 of each path are adjusted. It is configured. If the cleaning water supply unit is configured to supply water only to the eccentric path 222, the nozzle head 170 is the same as the nozzle head 170 described above.

Here, how water is discharged when the cleaning water is discharged from the nozzle head 220 will be described. First, when the cleaning water is supplied only to the center directing path 223, the cleaning water flows into the cleaning water vortex chamber 171 so as to direct the center thereof. The washing water that has flowed in this way passes through the orifice 163 almost without swirling in the swirl chamber,
When passing through the outside air entrapment chamber 162, the air is entrained and discharged from the throat (water discharge hole 221). Then, in this case, since the swirling of the washing water in the swirl chamber does not occur, the following water discharge state is obtained.

Since the amount of air entrained in the outside air entrainment chamber 162 is smaller than in the case where the washing water is swirled, the feeling of softness is reduced. The form of water discharge is not a cone-shaped KS but a substantially cylindrical shape. For this reason, as shown in FIG. 53, a small washing area SMa can be strongly washed with a column-shaped washing water column with a small amount of air mixing. Further, since the form of water spouting is cylindrical and thin, it is possible to forcibly apply the washing water into the anus at the time of washing the buttocks, so that a so-called enema effect can be achieved. The above-mentioned phenomenon is that the cleaning water is simultaneously supplied to both the center-directed path 223 and the eccentric path 222, and the flow rate Q1 of the center-directed path 223 and the flow rate Q2 of the eccentric path 222 are Q
It happens even in the case of 1 >> Q2.

On the other hand, the flow rate Q1 of the center directing path 223
When the cleaning water is simultaneously supplied to both the paths while adjusting the flow rate Q2 of the eccentric path 222 as follows.
When the flow rate Q1 and the flow rate Q2 are adjusted in the relationship of Q2 >> Q1, the cleaning water supplied from the eccentric path 222 at a large flow rate determines the behavior of the vortex chamber. , As shown by the arrow SY in the figure. Therefore, by this turning, the outside air entrapment chamber 162
The amount of air entrained in the water increases, and water can be spouted with a sufficiently soft feeling. Water discharge form is cone-shaped KS
Therefore, as shown in FIG. 53, the large cleaning area SMc
Can be washed while giving a sufficient amount of water due to the large amount of air mixing. In addition, since it is the water discharge form of the cone-shaped KS, the washing feeling and the washing effect described in FIG. 49 can be exhibited.

Then, the flow rate Q1 and the flow rate Q2, and Q2 is Q
When it is adjusted to approach 1, the effect of the cleaning water from the eccentric path 222 on the behavior of the swirl chamber becomes small. Therefore, when the flow rate is adjusted in this manner, the washing water flowing into the swirl chamber from both paths is swirled in the swirl chamber as shown by an arrow SY in the figure, but the swirling degree is small, and the following is achieved. .

Since the amount of air entrainment in the outside air entrapment chamber 162 decreases as the degree of the turn becomes smaller, the softness is gradually reduced. Although the water discharge form is a cone-shaped KS, the cleaning area SMb becomes narrower as shown in FIG.
The amount of aeration is also reduced. However, it is possible to obtain a sufficiently soft feeling and a feeling of water volume as compared with the case of supplying the washing water by the center-directed route alone.

Therefore, according to the nozzle head 220, the amount of air mixed in, the water discharge strength, the cleaning area, and the softness were variously adjusted by simultaneously supplying water from the two paths and adjusting the flow rate of each path at that time. Cleaning water spouting can be realized. Further, by supplying the washing water only from the center directing path 223, it is possible to obtain a specific air mixing amount, water discharge strength, washing area, and enema effect. If the flow rate is adjusted when supplying the cleaning water only from the center directing path 223, the air mixing amount, the water discharge strength, and the cleaning area can be changed according to the flow rate.

As described above, since the softness and the like of the nozzle head 220 can be adjusted as described above, the following configuration is also possible. When a normal buttocks washing button (not shown) is operated and normal buttocks washing is desired, the washing water is supplied only from the center-directed path 223. Then, the flow rate is adjusted according to the operation of the water pressure adjustment button. In the case of this usual butt washing, it is preferable to limit the regulating water force so that the column-shaped washing water column does not become extremely thin, so that the enema effect does not occur carelessly. If it is desired to exert an enema effect, an enema button or the like is provided separately from the normal ass washing, and when the button is operated, the washing water column is thinned to exert the enema effect. To

Further, a soft cleaning button and a bidet cleaning button are provided, and when the soft cleaning button is operated, the cleaning water is supplied to both of these paths while adjusting the flow rate Q1 of the center directing path 223 and the flow rate Q2 of the eccentric path 222. Water is supplied at the same time, and at this time, both flow rates are adjusted so that Q2 and Q1 are approximated within a predetermined range. On the other hand, if the bidet cleaning button is operated, the cleaning water is supplied to both paths at the same time, and at this time, both flow rates are adjusted so that Q2 becomes sufficiently larger than Q1. In a predetermined range in which Q2 and Q1 are close to each other, the flow rate can be changed in a range in which Q2 is sufficiently larger than Q1, and the water force can be adjusted by the water pressure setting button at the time of soft / bide cleaning. To do.

As described above, this nozzle head 2
According to No. 20, it is possible to adjust the presence or absence of an enema effect and the feeling of softness, etc. with a single spout, and to perform different washings such as ass, softness and bidet while satisfying the different washing feelings required for each of these washings. Can be. Since a single water discharge hole is sufficient, the size of the nozzle head can be reduced, and the size and the portability of the device can be reduced.

When the cleaning water is spouted by the nozzle head 220, the cleaning water supply unit may be configured to supply the cleaning water in a pulsating flow or an intermittent flow as in the above-described embodiment. In this way, in addition to the effects described above, such as diversification of a soft feeling according to the degree of turning,
The effect obtained by the flush water spouting in the pulsating flow or the intermittent flow can also be exhibited.

When the washing water supply in the pulsating flow or the intermittent flow is used together, the spread of the spiral by the washing water swirl chamber 171 is taken into consideration, and the feeling of the set stimulus, the set amount of water or the set washing area is determined. , The coil excitation duty ratio Dtm
Or the pulsation frequency ftm may be determined.

[0230] In addition, the local cleaning apparatus of the above embodiment or each modified example can be modified as follows. (1) Although the above-described wave generation device 74 was used to generate the pulsating flow of washing water, a pump capable of obtaining a pulsating output, such as a gear pump or a trochoid pump, can be used. In this case, the pulsation frequency can be variably controlled through the rotation speed control of these pumps to adjust the water force and the like. Further, it is also possible to perform the phase angle control of the wave generating device 74 with the AC drive as the AC drive, and to adjust the water force or the like similarly to the duty ratio control in the above-described embodiment. (2) Also, an on-off valve 128 that is used for washing water of an intermittent flow through an intermittent flow path is provided with a solenoid valve using a solenoid,
A poppet-type valve that opens and closes the water supply port by opening and closing the water supply port poppet to open and close the flow path may be used.

(3) Further, a pressurizing device 122 having a pressurizing pump composed of a line pump and an intermittent valve 128 were used for pressurizing the washing water and thereafter forming an intermittent flow, and both of them were configured separately. . However, the configuration is not limited to this, and the cleaning water may be configured to be pressurized and intermittent. FIG. 54 is an explanatory view illustrating a cleaning nozzle 175 of still another modification, and FIG.
FIG. 14 is an explanatory diagram illustrating a schematic configuration of a solenoid pump 176 used in a cleaning nozzle 175 of this modified example.

As shown in FIG.
76 is a suction-side check valve 176a and a discharge-side check valve 176b.
Is a normal flow type electromagnetic pump having The solenoid pump 176 excites the electromagnetic solenoid 176c to move the plunger 176d back and forth,
This is a valve for obtaining intermittently pressurized water from the pump chamber 176e. An ordinary solenoid pump uses an accumulator in combination with an accumulator in order to eliminate fluid intermittently due to the reciprocation of a plunger sandwiched between check valves on a suction side and a discharge side and to obtain a smooth pressure. However, the solenoid pump 176 of this modification is
By using the intermittent pressure as it is without using an accumulator, an intermittent cycle synchronized with the excitation voltage of the electromagnetic solenoid can be obtained. According to this embodiment, since the pressurizing unit and the intermittent unit can be realized by one solenoid pump 176, the configuration can be simplified. Even in this case, the above-described excitation cycle of the electromagnetic coil,
That is, the intermittent cycle is set so that its frequency falls within the dead band frequency range described above.

(4) In addition, the pressurizing device 122 and the intermittent valve 128 are used for pressurizing the washing water and thereafter making the intermittent flow.
As shown in FIG. 8, the intermittent flow in which the pressure fluctuation of the pressure regulating valve is the maximum pressure and the periodic fluctuation of the pressure occurs, but the intermittent flow in which the pressure fluctuation of the pressure regulating valve is the minimum pressure and the periodic fluctuation of the pressure occurs. It can also be. In this case, even when the pressure of the water supply source itself such as a water supply is originally low, the water can be spouted with the intermittent flushing water as described above.

(5) Further, in the above-described embodiment and its modifications, by stopping the driving of the wave generation device 74 and the like, it is possible to discharge the washing water by the continuous flow as in the conventional case. Therefore, a button for selecting the on / off state of the pulsating flow spout is provided on the remote control device or the sleeve of the main body, etc., and in accordance with the operation of the button, that is, according to the user's preference, the form of spouting of the pulsating flow flushing water. It is also possible to select the same water discharge mode as that of the conventional method using the local cleaning and the continuous flow of cleaning water.

(6) Further, a buffered hot water storage tank may be provided on the tapping side of the heat exchange unit 62 of the heat exchange unit 60, and this may be used in place of the accumulator 73. As a configuration of this buffered hot water storage tank, a tank arranged so as to have a higher water level than the heat exchange unit 62 is provided.
And the vacuum breaker 63 are installed. This buffered hot water tank absorbs pressure fluctuations propagating from the downstream side to the heat exchange section almost in the same manner as the accumulator. Therefore, even with this buffered hot water storage tank, disturbance in the temperature distribution in the heat exchange unit can be suppressed by fluctuation absorption, and the temperature in the heat exchange unit can be made uniform, and the temperature control characteristics are stabilized. A mixing plate or a mixing passage for promoting mixing of hot water may be provided in the buffered hot water storage tank to further enhance the pressure fluctuation absorbing effect. Further, the buffered hot water tank may be integrated with the heat exchange unit, and a mixing plate or the like may be provided inside the unit.

(7) Instead of using an incoming water temperature sensor to detect the incoming water temperature to the heat exchange unit 60, the amount of supplied electricity to the heater 61 is determined based on the amount of supplied electricity to the heater 61. May be calculated based on the differential value of. This eliminates the need for an incoming water temperature sensor,
The configuration can be simplified. The incoming water temperature sensor SS16a and the outgoing water temperature sensor SS113 can be provided not only in the heat exchange unit but also before and after the heat exchange unit as long as they reflect the temperature of the hot water in the heat exchange unit.

Next, another modification will be described.
FIG. 56 is a schematic cross-sectional view of a main part of a cleaning nozzle 180 included in the local cleaning device of this modified example. In the following description, the same member names and the same reference numerals will be used as described above. In addition, the description will be made assuming that the cleaning nozzle 180 is for cleaning the buttocks.

The cleaning nozzle 180 of this modified example discharges pulsating or intermittent cleaning water by forcibly mixing air into the cleaning water and discharging the water by periodically changing the amount of air mixing. There is a feature. That is, as shown in FIG. 56, the cleaning nozzle 180 has
The cleaning water is supplied to the water discharge hole 31 through the nozzle flow path 181. An air mixing chamber 182 is formed below the water discharge hole opening. In the air mixing chamber 182, the nozzle flow path is formed by a porous pipe 183 made of resin, metal, ceramic, or the like. .

The air mixing chamber 182 is in communication with an air pressure feeding mixing unit 185 via an air flow path 184.
As shown schematically in the drawing, this air pressure feeding / mixing unit 185 feeds air to the air mixing chamber while periodically varying the air flow rate or at a fixed set flow rate. The pneumatic feeding and mixing unit 185 is
At this time, air is mixed into the washing water by the porous pipe 183. The porous pipe 183 mixes air as fine bubbles into the cleaning water passing therethrough due to its porous nature. Therefore, the pneumatic feed mixing unit 18
Combined with the pumping from 5, it is possible to mix up to four times the volume of air to the washing water.

The above-mentioned pneumatic feed mixing unit 185 is
It can be configured using a variable displacement air pump, or can be configured using a constant displacement or variable displacement air pump and a flow regulating valve disposed downstream thereof. Alternatively, the air pump can be configured using these air pumps and an on-off valve arranged downstream of the air pump to open and close the pipeline. In order to pump air while periodically changing the air flow rate in the air pressure feed mixing unit 185 configured as described above, the flow rate may be periodically changed by controlling the rotation speed of the air pump, or the pipe may be controlled by a flow control valve. The effective area of the road may be changed periodically in the range of 0 to 100%, or may be changed periodically in the range of 10 to 100%. In the case of an on-off valve, the opening and closing of the pipeline may be repeated periodically. In this case, if a positive displacement air pump is used as the air pump, the air supply / stop / repeating is repeated in accordance with the operation of the air pump. In such a configuration, when the effective area of the pipeline is set to 0 by the flow control valve, the pipeline is shut off by the on-off valve, or the operation of the positive displacement air pump is stopped, the washing water is cut off. Situation, i.e., only air comes out of the spout. Therefore, it is possible to adopt a water discharge mode in which the mixed air becomes a sandwich in a state of water, air, water, air, etc. without being finely mixed with water. This water discharge form has almost the same behavior as the above-described water discharge form of intermittent flow of wash water. For this reason, the apparent volume increases due to aeration and the flow rate of the cleaning water is increased, and the water is interposed between the air and the cleaning water is ejected in a water mass. The same effect as can be expected.

In the cleaning nozzle 180, when water is supplied to the nozzle from the cleaning water supply unit 186 in a state where the air pressure supply from the air pressure mixing unit 185 is stopped, the cleaning water is continuously supplied from the tail water discharge hole 31. Can be spouted. When the nozzle is supplied with the air pressure from the air pressure mixing unit 185 at a constant set flow rate, the washing water in which bubbles are mixed at a substantially constant ratio can be in a continuous flow state. In other words, it is possible to selectively use the flushing water that has been mixed with air and the flushing water that contains only the flushing water. And water can be saved by the amount of air mixing. In addition, by adjusting the setting of the amount of mixed air and / or adjusting the flow rate of the washing water, the washing water mixed with air at various ratios can be discharged in a continuous flow state, depending on the amount of mixed air and the flow rate. A feeling of washing and water force can be obtained.

Further, in the cleaning nozzle 180, the air is pressure-fed while periodically varying the air flow rate and mixed with the cleaning water. The washing water is periodically repeated. In the part where the air mixing amount is dense, the flow rate of the washing water is increased by the amount of air mixing, and in the sparse part, the flow velocity does not increase as much as the dense part. And the part where the air mixing amount is high and the flow velocity is high is
Catch up with the sparse and slow flow area and merge with it. This phenomenon is not different from the phenomenon described with reference to FIG. Moreover, in this modified example, when the air is pressure-fed while periodically varying the air flow rate, the variation frequency determined by the variation cycle is set within the dead band frequency range described above.

As a result, the washing water spouting in this modification is
The pulsating flow or intermittent flow of the cleaning water is discharged in accordance with the state of the periodic fluctuation of the air flow rate, which is equivalent to that of the above-described embodiment or that of mixing the air. That is,
The washing water spouting by the washing nozzle 180 of this modified example is a water chunk-like spout as described above by spouting in a pulsating flow or an intermittent flow, but the cleaning water is mixed with a small water chunk as shown in FIG. It will be in a state of becoming. Even if these minute water bodies are ejected from the water discharge holes, they are in a state in which they are hardly combined with each other again. Therefore, the same effect as in the above-described embodiment, that is, the improvement of the water saving effect and the setting of various feelings of washing and water force can be achieved by the washing nozzle 180. In the cleaning nozzle 180, by adjusting the fluctuation width at the time of periodic fluctuation of the air flow rate and / or the flow rate of the cleaning water, it is possible to diversify the cleaning feeling. That is, even if the flow velocity is reduced due to a shortage of water, the water force can be maintained or the strength can be adjusted by adjusting the fluctuation width during the air pressure feeding.

In the above-described embodiment and each of the modifications, the head flow paths for the tail cleaning, the soft cleaning, and the bidet cleaning in the nozzle head may be arranged vertically. By doing so, the width direction of the cleaning nozzle can be narrowed, various devices and units including the nozzle device can be arranged close to each other, and the size of the device can be reduced. In this case, the nozzle flow path can be formed vertically in the cleaning nozzle in addition to the upper and lower head flow paths. Further, the nozzle head may be configured such that the head cover having each of the water discharge holes is mounted on the base having each of the head flow paths, and an outside air introduction hole is provided between the base and the head cover.

The embodiments of the present invention have been described above.
The present invention is not limited to the above-described examples and embodiments at all, and it goes without saying that the present invention can be implemented in various modes without departing from the gist of the present invention.

For example, the heat exchange unit 60 is replaced with a heater 61 made of a spiral nichrome wire and a small-capacity heat exchange section 62.
Although it is built in the following, it can also be as follows. That is, if the heater 61 is a laminated cylindrical ceramic heater, the leakage detection circuit and the overheat prevention circuit can be printed on the green sheet before baking and each circuit can be formed on the heater surface by baking. Therefore, an external leakage detection / leakage protection circuit becomes unnecessary, and an overheat prevention device such as a bimetal is also unnecessary. The heat exchange unit 60 can be reduced in size by stacking and omitting the equipment. Also, the heater 61
May be an electromagnetic induction heater that causes electromagnetic induction in a resistor by a change in magnetic flux linked to a high-frequency current to generate the resistor by Joule heat. This eliminates the need to submerge the heater 61 in the heat exchange section.
The leakage protection circuit is not required, and the size can be reduced accordingly.
Furthermore, since the degree of freedom of the shape of the heater is high, the heater 61 can be formed in a shape along a meandering channel, and the washing water can be efficiently heated.

The heat exchange unit 60 may be of a hot water storage type instead of an instantaneous type. This makes it possible to extend the continuous water discharge time of the cleaning water at the predetermined temperature. Further, warming of the washing water in the heat exchange section can be performed when the toilet is not used, such as at midnight, and in that case, the heater 61 with low power consumption can be used. In this way, the maximum power consumption of the entire local cleaning device can be reduced, so when installing the local cleaning device in an existing toilet, the indoor wiring capacity may be insufficient or the capacity contract may be changed. Is reduced.

[Brief description of the drawings]

FIG. 1 shows a local cleaning device 1 according to an embodiment mounted on a toilet bowl.
It is a schematic perspective view showing 0.

FIG. 2 is a block diagram illustrating a schematic configuration of the local cleaning device 10 with a focus on a water channel system.

FIG. 3 is a cross-sectional view illustrating a schematic configuration of an accumulator 73 provided in the waterway system.

FIG. 4 is a cross-sectional view illustrating a configuration of a wave generation device 74 similarly arranged in a waterway system.

FIG. 5 is an explanatory diagram illustrating a state of a flow of cleaning water by the wave generation device 74.

FIG. 6 is a schematic diagram schematically showing a state of installation of a wave generation device 74.

FIG. 7 is a block diagram illustrating a schematic configuration of a control system.

FIG. 8 is a schematic perspective view showing a nozzle device 40.

9 is a schematic sectional view taken along line 9-9 in FIG.

FIG. 10 is an explanatory diagram for explaining how the cleaning nozzle moves forward and backward.

FIG. 11 is a schematic cross-sectional view of a main part for describing a configuration of a flow path switching valve 71 included in a cleaning nozzle.

FIG. 12 is an exploded perspective view of a main part of the flow path switching valve 71.

FIG. 13 is a plan view showing the nozzle head 25 in a plan view and a part of the periphery of the head cut away.

FIG. 14 is a plan view showing a modified example of the nozzle head 25.

FIG. 15 is an explanatory diagram illustrating a state of excitation of a pulsation generating coil 74c of a wave generation device 74 that generates a pulsation at the time of flush water discharge.

FIG. 16 is a timing chart showing a flow rate and a flow rate of cleaning water flowing out of the wave generation device 74.

FIG. 17 is an explanatory view schematically illustrating a state of flush water spouting from a tail spout hole 31 of the nozzle head 25.

FIG. 18 shows a case in which pulsating flush water is discharged from a water discharge hole.
It is explanatory drawing explaining the process in which the discharged washing water is amplified into a pulsating flow.

FIG. 19 is an explanatory diagram illustrating a state in which a cleaning water stream collides with a wall surface.

FIG. 20 is an explanatory diagram illustrating a state in which a pressure sensor plate Ps is installed facing the buttocks discharge hole 31 and separated by a predetermined distance La.

FIG. 21 is an explanatory diagram three-dimensionally expressing a position on a pressure sensor plate Ps and a peak value of pressure.

FIG. 22 is a timing chart showing a detection signal detected from one of the detection units.

FIG. 23 is a graph showing a relationship between an average water discharge amount and a cleaning amount.

FIG. 24 is an explanatory diagram for explaining the reason why the cleaning intensity varies depending on the increase or decrease of the frequency.

FIG. 25 is a graph showing a relationship between a pulsating frequency and a washing intensity of a pulsating flow and discomfort caused by stimulation of a human body local part.

FIG. 26 is an explanatory diagram illustrating a control example in which the pulsation frequency in the pulsating flow of the washing water is made different between the butt cleaning and the bidet cleaning.

FIG. 27 is an explanatory diagram illustrating a control example of a pulsation frequency ftm and a duty ratio Dtm.

FIG. 28 is a time chart illustrating a cleaning operation of the local cleaning apparatus 10 according to the embodiment.

FIG. 29 is a circuit diagram illustrating an example of a bottom detection circuit 81 for the pulsation generation coil 74c.

FIG. 30 is an explanatory diagram for explaining a state of a current waveform at the time of energizing excitation of the pulsation generating coil 74c.

FIG. 31 is an explanatory diagram for describing an effect obtained by the accumulator 73.

FIG. 32 is an explanatory diagram illustrating a control method of increasing the flow velocity while keeping the flow rate constant when performing pulsating flush water discharge, and is an explanatory diagram illustrating a control state when the flow velocity is low. .

FIG. 33 is a block diagram illustrating a water channel configuration of a local cleaning device according to a modification.

FIG. 34 is a block diagram illustrating a water channel configuration of a local cleaning device according to another modification.

FIG. 35 is a schematic configuration diagram showing a schematic configuration of a flow control switching valve 75 of a modified example, partially cut away.

FIG. 36 is a block diagram illustrating a water channel configuration included in a local cleaning device according to another modification.

FIG. 37 is a cross-sectional view illustrating a configuration of an intermittent valve 128 arranged in the waterway system.

FIG. 38 is an explanatory diagram illustrating a water pressure in a water channel system of a local cleaning device according to a modified example having the intermittent valve.

FIG. 39 is a block diagram illustrating a water channel configuration of a local cleaning device according to another modification.

FIG. 40 is a cleaning nozzle 1 of a modified example in which air is forcibly mixed.
FIG. 4 is an explanatory diagram for explaining a configuration of a first embodiment;

FIG. 41 is a graph showing a relationship between an air mixing amount when air is forcibly mixed into the cleaning water and a cleaning area of the cleaning water spouted with the air mixing.

FIG. 42 is an explanatory diagram illustrating a configuration of a cleaning nozzle 140A according to another modification for forcibly mixing air.

FIG. 43 is a schematic cross-sectional view of a main part of a cleaning nozzle of each modified example for natural suction.

FIG. 44 is a schematic cross-sectional view of a main part of a cleaning nozzle according to each modification for achieving natural suction.

FIG. 45 is a schematic view schematically showing a cleaning nozzle according to another modification for achieving natural suction.

FIG. 46 is a graph showing air entrainment characteristics in another modified example.

FIG. 47 is a schematic perspective view schematically showing the internal structure in a see-through manner for explaining a nozzle head 170 in which the cleaning nozzle shown in FIG. 45 is further modified.

FIG. 48 shows a nozzle head 170 according to another modification.
6 is a graph showing air entrainment characteristics at the time of FIG.

FIG. 49 is an explanatory view schematically showing a state of spouting of cleaning water from the nozzle head 170.

FIG. 50 is a schematic cross-sectional view of a main part of a nozzle head 200 according to another modification.

FIG. 51 is a schematic perspective view in the X direction.

FIG. 52 is a perspective view of a bottom cover 210 of the nozzle head 200.

FIG. 53 is a schematic perspective view schematically illustrating the internal structure of a nozzle head 220 according to a modified example in which the nozzle head 170 is modified.

FIG. 54 is an explanatory diagram illustrating a cleaning nozzle 175 of still another modified example.

FIG. 55 is an explanatory diagram illustrating a schematic configuration of a solenoid pump 176 used in the cleaning nozzle of this modified example.

FIG. 56 is a schematic cross-sectional view of main parts of a cleaning nozzle 180 included in a local cleaning device according to another modification.

FIG. 57 is an explanatory diagram showing a current waveform of the pulsation generating coil 74c when the plunger 74b reciprocates.

FIG. 58 is an explanatory diagram for explaining a state of move cleaning in the first embodiment.

FIG. 59 is an explanatory diagram for explaining a state of massage cleaning in the first embodiment.

FIG. 60 is an explanatory diagram illustrating a control method for increasing / decreasing the flow rate / flow velocity when performing flushing water discharge of a pulsating flow, and is an explanatory view illustrating a control state in a case of a low flow velocity.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Local washing | cleaning apparatus 12 ... Body part 14 ... Remote-control device 20 ... Toilet lid 22 ... Sleeve part 24a ... Cylindrical part 24b ... Belt holding body 24c ... Track holding body 24d ... Holding part 24 ... Cleaning nozzle 25 ... Nozzle head 26a ... First nozzle flow path 26b ... Second nozzle flow path 26c ... Third nozzle flow path 28 ... Display unit 29 ... Cover 29a ... Light transmission window 30 ... Water discharge hole 31 ... Bottom water discharge hole 32 ... Soft water discharge hole 33 ... Bidet Water discharge hole 34 ... First head flow path 35 ... Second head flow path 36 ... Third head flow path 40 ... Nozzle device 41 ... Base 41a ... Stand 41b ... Nozzle holding part 41c ... Chamber 42 ... Nozzle drive motor 43 ... Transmission mechanism 43a: Drive pulley 43b: Driven pulley 43c: Timing belt 43d: Tension roller 44: Guide rail 45: Nozzle advance / retreat track 50: Water entry side Valve unit 51 ... Upstream water supply line 52 ... Strainer 53 ... Check valve 54 ... Pressure regulating valve 55 ... Solenoid valve 56 ... Relief valve 56a ... First washing water outlet line 60 ... Heat exchange unit 61 ... Heater 62 ... Heat exchange Part 63 Vacuum breaker 65 Flow regulating valve 65 Solenoid valve 70 Wave generation unit 71 Flow path switching valve 71a Casing 71b Stator 71c Rotor 71d Coupling 71e Housing 71f Spring 71g Communication hole 71j Notch 71k Drive motor 71m Slit 71n Rotating shaft pin 71q Rotating key 71r Slit 71s Connection joint 72 Downstream water supply line 73 Accumulator 73a Housing 73b Damper chamber 73c Damper 73d Spring 74 Wave Generator 74a… Cylinder 74b… Plan 74c ... Electromagnetic coil (pulsation generating coil) 74d ... Upstream / downstream spring 74f ... Check valve 75 ... Flow regulation switching valve 75a ... Drum casing 75b ... Drum 75c ... Water groove 77 ... Flow regulation switching valve 79 ... Drying section Reference Signs List 80 ... Electronic control device 81 ... Bottom detection circuit 82 ... Comparator 83 ... Capacitor 84 ... Resistor 85 ... Detection resistor 86 ... Switching transistor 100 ... Local cleaning device 110 ... Local cleaning device 112 ... Nozzle device 114 ... Bottom cleaning nozzle 116 ... Cleaning nozzle for bidet 120 ... Local cleaning device 122 ... Pressure device 124 ... Flow regulating valve 126 ... Intermittent flow generating unit 128 ... Intermittent valve 128a ... Motor 128b ... Valve body 128c ... Housing 128d ... Valve body flow path 128e ... Valve flow path 128f: inclined section 130: local cleaning device 140: Cleaning nozzle 140A Cleaning nozzle 140a Cylindrical part 140b Upper section chamber 142 Nozzle head 142A Nozzle head 142B Nozzle head 142C Nozzle head 146 Air piping 149 Air pump 150 Air flow regulating valve 154 Orifice 157 ... outside air introduction passage 160 ... outside air introduction pipe 161 ... nozzle head 162 ... outside air entrapment chamber 163 ... orifice 164 ... outside air introduction passage 170 ... nozzle head 171 ... washing water vortex chamber 175 ... washing nozzle 176 ... solenoid pump 176a ... suction side non-return Valve 176b ... Discharge-side check valve 176c ... Electromagnetic solenoid 176d ... Plunger 176e ... Pump chamber 180 ... Washing nozzle 181 ... Nozzle flow path 182 ... Air mixing chamber 183 ... Porous pipe 184 ... Air flow path 185 ... Air pressure feeding mixing unit G 186 Cleaning water supply unit 200 Nozzle head 202 Upper lid 204 Air gap chamber 206 Soft vortex chamber 206a Connection port 207 Orifice 208 Bide cleaning water vortex chamber 208a Connection port 210 Bottom lid 212 Outside air introduction passage 213 ... Standing plate 220 ... Nozzle head 221 ... Water discharge hole (throat) 222 ... Eccentric route 223 ... Center directional route BT ... Toilet SS16a ... Water temperature sensor SS16b ... Water temperature sensor SS18 ... Float switch SS30 ... Tilting detection sensor SS14 ... Washing water amount sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Nobuyuki Kawahara 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. (72) Haruo Tsutsui Nakajima, Nakajima-ku, Kitakyushu-shi, Fukuoka 2-1-1, F-term (reference) in Totoki Kiki Co., Ltd. 2D038 JA05 JB05 JF00 JH00 JH12

Claims (17)

[Claims] 1. A human body cleaning apparatus for discharging cleaning water from a water discharge port to a human body, comprising: a water supply unit configured to supply cleaning water to the water discharge port; and a bodily sensation setting for setting a user's cleaning experience received from the water discharge cleaning water. Means, a fluctuation generating means for causing a regular fluctuation in the flow of the supplied washing water, and fluctuation control for controlling the fluctuation means to change the regularity of the flow fluctuation in accordance with the set cleaning experience. Means for cleaning a human body. 2. The human body washing apparatus according to claim 1, wherein the variation control unit includes a frequency changing unit that changes a variation frequency among regularities of the flow variation. 3. The human body washing apparatus according to claim 1, wherein the variation control unit has a duty ratio changing unit that changes a duty ratio of the variation generating unit in the regularity of the flow variation. Cleaning equipment. 4. The human body cleaning apparatus according to claim 1, wherein the fluctuation generating means performs the cleaning in which the fluctuation occurs under a condition that the regularity of the fluctuation of the flow is the same. A human body cleaning apparatus comprising a fluctuation inducing means for inducing a fluctuation in the flow so that a human body does not recognize a change in a water discharge state based on the water discharge in the state of a water flow as a stimulus change. 5. The human body cleaning apparatus according to claim 4, wherein the fluctuation inducing means detects the fluctuation of the flow of the cleaning water at a frequency higher than a frequency at which the human body can recognize a periodic stimulation as a stimulation change. A human body cleaning device having an inducing means for inducing. 6. The human body cleaning apparatus according to claim 1, wherein the fluctuation generating unit includes: a cylinder forming a part of a water supply path of the cleaning water; A plunger for pulsating the flow of the wash water by the reciprocating motion to pump the wash water downstream of the cylinder; an electromagnetic solenoid for reciprocatingly driving the plunger; an exciting unit for exciting the electromagnetic solenoid; And a check valve which allows the flow of the washing water to the downstream side. 7. The human body cleaning device according to claim 6, wherein the variation control unit controls the excitation unit to change an excitation frequency of the electromagnetic solenoid, and the excitation unit includes A human body cleaning apparatus having at least one of a second changing unit for controlling and changing a duty ratio of the electromagnetic solenoid. 8. The human body washing device according to claim 7, wherein the first changing unit is configured such that, when the strength of the stimulus is set as the cleaning sensation by the sensation setting unit, the stimulus increases. A human body cleaning device for reducing and changing the excitation frequency. 9. The human body washing device according to claim 7, wherein the first changing unit is configured such that, when the strength of the feeling of water is set as the cleaning feeling by the feeling setting means, the stronger the feeling of water, the greater the feeling of water. A human body cleaning device for reducing and changing the excitation frequency. 10. The human body washing apparatus according to claim 7, wherein the second changing unit is configured such that, when the strength of the stimulus is set as the cleaning sensation by the sensation setting unit, the stimulus increases. A human body cleaning device for increasing and changing the duty ratio. 11. The human body washing device according to claim 7, wherein the second change unit is configured such that, when the strength of the water sense is set as the cleaning sense by the body sense setting unit, the stronger the sense of water, the greater the sense of water. A human body cleaning device for increasing and changing the duty ratio. 12. The human body cleaning device according to claim 7, wherein the second change unit changes the duty ratio when the level of the water discharge temperature is set as the cleaning sensation by the sensation setting unit. ,
Human body cleaning device. 13. The human body cleaning device according to claim 7, wherein the second change unit is configured such that a widening or narrowing of a cleaning area where the spouted cleaning water lands is set as the cleaning bodily sensation by the bodily sensation setting unit. Changing the duty ratio to increase as the cleaning area increases,
Human body cleaning device. 14. The human body cleaning apparatus according to claim 1, wherein the variation generating means is provided in a water supply path of the cleaning water, and is formed so that air can be mixed into the water supply path from outside. The aeration unit is connected to the aeration unit, the pressure or flow rate of the air fluctuates to force the air from the aeration unit, the aeration unit to the regular flow of the wash water A human body cleaning device having an air mixing means for causing fluctuation. 15. The human body cleaning device according to claim 14, wherein the air mixing unit is located near the water discharge hole. 16. The human body washing device according to claim 1, wherein the fluctuation generating means has an intermittent means for intermittently interrupting a flow of the washing water at a frequency of about 5 Hz or more in a water supply path leading to the water discharge port, The human body cleaning apparatus, wherein the variation control unit includes a unit that controls the intermittent unit and changes the frequency according to the set cleaning sensation. 17. The human body cleaning device according to claim 16, wherein the flow of the washing water is interrupted by the interrupting means, the pressure adjusting means for adjusting the pressure of the washing water flowing through the water supply path to a predetermined pressure. A human body cleaning device provided in the water supply path upstream of a location.