JP2002155565A - Human body washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new water discharge system producing the two-dimensional expansion of a washing range without nozzle movement. SOLUTION: This human body washing device is provided with a water supply means for supplying wash water to a discharge hole, and a swirl applying means for applying swirling force around the axis of the discharge hole to the supplied wash water to lead the wash water to the discharge hole and to discharge the wash water from the discharge hole in the state of having swirling force. The swirl applying means has a fluctuation generating means for generating periodic fluctuation to the flow of the wash water supplied from the water supply means to allow the degree adjustment of swirling force applied to the supplied wash water. The fluctuation generating means has a cylinder that forms a part of water supply line; a plunger reciprocated in the cylinder to generate pulsation to the flow of the wash water by the reciprocating motion to force-feed the wash water to the lower reaches of the cylinder; a solenoid for driving to reciprocate the plunger; a control means for controlling the excitation of the solenoid; and a check valve provided at the cylinder to allow the wash water to pass through to the lower reaches.

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 cleaning apparatus of this type, for example, a local cleaning apparatus for cleaning 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 diversification of the spouting form of the washing water has been attempted in addition to the spouting of the washing water. For example, a fluid element is incorporated into a nozzle having a water discharge hole, and the direction of water discharge of washing water is switched to the front-rear direction or the left-right direction with respect to the nozzle by the fluid element. By switching the water discharge direction in this way, an area (wash area) for receiving the discharged wash water is enlarged.

[0003]

However, the switching of the water discharge direction by the fluid element is limited to one direction of the nozzle front-back direction or the nozzle left-right direction due to its structure. Stay in. Therefore, in order to expand the cleaning range two-dimensionally, for example, into a substantially circular shape, it is necessary to combine front-back or left-right movement of the nozzle itself. Since moving the nozzle itself involves driving the nozzle drive motor, when expanding the cleaning range,
At all times, extra energy is consumed for motor driving.

The present invention has been made to solve the above-mentioned problem, and has as its object to provide a new water discharging method which provides a two-dimensional expansion of a cleaning range without moving a nozzle.

[0005]

Means for Solving the Problems and Their Functions and Effects In order to solve at least a part of the above problems, a human body cleaning device of the present invention is a human body cleaning device that discharges cleaning water from a water discharge hole of a nozzle to a human body. A water supply means for supplying cleaning water to the water discharge hole, and imparting a swirling force about the axis of the water discharge hole to the supplied cleaning water to guide the cleaning water to the water discharge hole,
A swirling means for spouting the washing water from the spout hole with the swirling force, the swirling applying means causing a periodic fluctuation in the flow of the water wash water from the water supply means, And a fluctuation generating means for varying the degree of the swirling force applied to the feed water cleaning water, wherein the fluctuation generating means reciprocates in the cylinder and forms a part of the water supply path. A plunger for pulsating the flow of the wash water to pump the wash water downstream of the cylinder;
An electromagnetic solenoid for reciprocatingly driving the plunger, control means for exciting and controlling the electromagnetic solenoid, and a check valve provided in the cylinder and allowing passage of washing water to a downstream side are provided.

In the human body washing apparatus of the present invention having the above-described structure, the washing water is spouted from the spouting hole with the swirling force around the axis of the spouting hole. Water is discharged while turning around the hole axis (hereinafter, such water discharge is referred to as turning water discharge). Since the swirling force of the swirling spout is applied to the feed water, the spouting hole and the nozzle having the spout need not be moved. Therefore, the washing water can be swirled and discharged without accompanying the nozzle movement, and the washing range can be expanded to a two-dimensional shape determined by the swirling. Further, since the swirl applying means has a variable means for changing the degree of the swirling force applied to the feed water cleaning water, the range of washing by swirling spout can be set wide through the variable swirling force. Further, the fluctuation generating means for causing the fluctuation described above includes a cylinder forming a part of the water supply path, and a reciprocating motion in the cylinder. A plunger for pressure-feeding the cylinder downstream, an electromagnetic solenoid for reciprocatingly driving the plunger, control means for exciting and controlling the electromagnetic solenoid, and a check valve provided in the cylinder for allowing passage of washing water to the downstream side Therefore, 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. Moreover, 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, flushing water is always supplied into the cylinder regardless of the movement of the plunger during the pulsating flow. Lead and pump the wash water. Therefore, 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.

[0007] The human body washing apparatus of the present invention having the above-described configuration can also adopt the following various aspects. The swirling means, the swirling chamber formed in the nozzle so as to communicate with the water discharge hole, and the washing water flowing into the swirling chamber swirls along the inner wall surface of the swirling chamber.
And an introduction unit for introducing cleaning water into the swirl imparting chamber. The introduction means may have an eccentric pipe line which is eccentrically communicated with the swirling chamber and through which washing water flows into the swirling chamber. In this case, the swirling water can be provided by applying the swirling force along the inner wall surface of the swirling application chamber to the water supply washing water only by introducing the washing water into the swirling applying chamber by the introducing means. Therefore, no special electric equipment such as a motor is required for imparting the turning force, so that energy can be saved. in this case,
In order to make the degree of the swirling force variable, the flow rate of the washing water (the eccentric pipe flow rate) introduced into the swirling chamber may be made variable.

In the case where two or more water discharge holes are provided in the nozzle, the following may be performed. First, the water discharge holes are arranged side by side on the substantially central axis of the nozzle. Then, the swirl imparting chambers corresponding to the respective water spouting holes are installed along the line of the water spouting holes, and the eccentric conduits communicating with the respective swirling imparting chambers are disposed on the left and right around the nozzle central axis. With this arrangement, the eccentric pipes arranged right and left can be arranged close to each other so as to reduce the interval therebetween, so that not only the nozzle but also the nozzle head which is the portion for forming the water discharge hole can be made compact. Of course, the eccentric pipes communicating with the respective swiveling chambers can be arranged vertically above and below the center axis of the nozzle.

[0009] Further, the swiveling chamber is provided with an axially oriented pipe communicating with the swirling chamber so as to direct the axis thereof, and the washing water flows into the swirling chamber. The variable means is connected to the eccentric pipe. The apparatus may have an adjusting means for adjusting the flow rate of the washing water in the axially oriented pipe. In this case, the cleaning water behavior in the swirling chamber is substantially determined by the flow ratio between the eccentric pipe and the axially-directed pipe. Therefore, by adjusting this flow rate, the swirling force can be varied and the cleaning range can be set to be wide or narrow. Can be.

[0010] Further, it is possible to have an air mixing means for mixing air into the cleaning water before the cleaning water to which the turning force is applied is discharged from the water discharging hole. In this way, in addition to the advantage of the above-described swirling water discharge, it is possible to achieve an effect associated with air mixing into the cleaning water, for example, to reduce the amount of the cleaning water, save water through the water, and diversify the feeling of cleaning. it can.

Further, in the above-described human body cleaning apparatus of the present invention and various aspects thereof, the following aspects can be adopted. That is, the variable means may be a pulsating wave generating means for generating a pulsating wave centered on the water supply pressure of the water supply means in the water supplied from the water supply means.
With this configuration, since the high-pressure spouting of the swirling water is generated only intermittently, it is possible to reduce the amount of the washing water at the time of cleaning, in addition to the advantage of the swirling water. Moreover,
The flow rate for the swirl can be changed periodically, which allows for a wider washing range.

[0012] The variable means may be a fluctuation generating means for causing a periodic fluctuation in the flow of the water supply washing water from the water supply means. In this way, the flow of the supplied cleaning water is changed, and the water can be discharged from the water discharge hole while rotating the cleaning water in the state of the flow of the generated cleaning water. And

By the way, as in this embodiment, when the flow of the washing water fluctuates and this washing water is spouted from the spout,
Periodic cleaning water spouting takes 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, when the flow varies and the cleaning water is led to the water discharge hole, a periodic water discharge form reflecting the fluctuation is obtained. Therefore, the wash water is guided to the water discharge hole in a pulsating flow state, and the water discharge form from the water discharge hole has a pulsation such that the pulsating flow reflects and the water discharge water amount increases and decreases while causing the swirling state of the wash water. It will be. 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 way, 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, the advantage that the same cleaning intensity can be obtained with a smaller amount of water than the continuous flow by using the pulsating flow can be obtained in addition to the above-described advantages associated with the swirling water discharge of the cleaning water. In addition, since only a small amount of water is required to obtain a desired cleaning strength, there are the following advantages. In addition, the flow rate for the swirl can be changed periodically, thereby making it possible to widen the washing range.

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 cleaning 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,
It is possible to reduce the size of the water heating mechanism and, in turn, the size of the device itself.

As described above, when the flow of the washing water is varied, it is possible to prevent the flow of the feed water washing water from having a zero flow rate. In this way, it is possible to prevent the flow of the washing water from being interrupted even momentarily, so that it is possible to avoid the occurrence of water hammer in the feed water washing water system or to generate only a weak water hammer. . As a result, troubles caused by intermittent flushing of water, specifically damages and deterioration of pipes and valves in pipes included in the flushing water system, or abnormal noises such as chattering sound and inadvertent vibrations Can be eliminated or reduced. In addition, when the flow of the cleaning water is changed without causing the state of the 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 state of the zero flow. 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. Moreover, the washing water can be discharged while turning with such a pulsation.

[0016] The fluctuation generating means may include a changing means for changing a fluctuation cycle generated in the flow of the feed water wash water, or a means for changing the fluctuation cycle regularly or irregularly. Can be included. This makes it possible to change the washing water spouting in the pulsating flow by changing the fluctuation cycle, so that the washing feeling and the cleaning intensity based on the washing water spouting in the pulsating flow change regularly or irregularly. Therefore, it is useful for diversification of washing feeling and washing strength.

Further, the sense of irritation caused by receiving the flush water spouting in the pulsating flow also changes. Therefore, if the sense of irritation changes regularly, it is possible to apply a regular change of irritation by applying flush water spouting with a pulsating flow to a human body part, thereby facilitating defecation by a massage effect.

On the other hand, if this stimulus changes irregularly,
Since it is difficult to predict the state of the change in the stimulus, it is possible to alleviate the monotonous feeling at the time of washing, and to promote defecation at the time of unconscious local washing as described later.

The fluctuation generating means is configured to recognize the fluctuation of the flow of the supply water and the flow of the cleaning water so that the human body does not recognize the change in the water discharge state based on the discharge of the cleaning water in the state of the flow of the cleaning water as the stimulus change. It may have means for inducing fluctuation. Further, the fluctuation inducing means may include an inducing means for inducing the fluctuation of the flow of the washing water at a frequency higher than a frequency at which a human body can recognize a periodic stimulation as a stimulation change. This way,
As described above, it is possible to prevent the human body from recognizing a change in the water discharge state based on the flush water discharge in the pulsating flow and a change in the flow for making the flush water discharge in the pulsating flow as a stimulus change.
Therefore, it is a pulsating flow of flushing water, so that it is in a spouting state in which the water masses of the instantaneous spouting flushing water are connected, and the human body does not feel that the water mass is hitting the human epidermis one after another. In addition, the flow of the washing water can be changed. For this reason, even if the washing water is spouted in a pulsating flow, the user can be given a feeling as if the washing water was spouted in a continuous flow. Therefore,
The pulsating flow of the washing water spouting can be suitably used for ordinary ass washing and bidet washing which requires continuous washing with the washing water, and does not cause discomfort or discomfort.

Further, the flow rate of the washing water can be reduced independently of the fluctuation of the flow of the washing water. Therefore, even if the flow rate of the washing water is reduced, the washing feeling and the comfortable feeling based on the pulsating flow of the washing water can be maintained, so that the effectiveness of water saving can be further enhanced.

The following method can be used to induce the human body not to recognize the water discharge state change based on the wash water discharge in the pulsating flow. 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 fluctuation of the flow of the washing water be 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 the difference is that the stimulation change is not recognized, it is common in that intentional water discharge control is performed. In other words, the stimulus change described here is a stimulus change inevitably occurring in performing the wash water spouting or continuation of the wash water spout, regardless of the form of the wash water spout, for example, simply continuing the spout. Frequency that occurs inevitably just by
It does not include stimulus changes in the cycle.

By the way, the location of the washing water landing (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 constituted by a cylinder forming a part of the water supply path and a reciprocating motion in the cylinder. , A solenoid for reciprocatingly driving the plunger, control means for exciting and controlling the electromagnetic solenoid, and a check provided in the cylinder to allow the passage of washing water downstream. And a valve. 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. Moreover, 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, flushing water is always supplied into the cylinder regardless of the movement of the plunger during the pulsating flow. Lead and pump the wash water. Therefore, 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.

Further, the electromagnetic solenoid can be controlled to be excited by controlling the duty ratio, and the duty ratio can be changed based on the set water discharge amount or the set cleaning intensity of the cleaning water. In this case, the water discharge amount and the cleaning intensity can be adjusted through the duty ratio control of the excitation of the electromagnetic solenoid.

Before the swirling of the cleaning water, the flow of the cleaning water may be varied as follows. That is, the flow of the washing water may be interrupted at a frequency of about 5 Hz or more in the water supply path leading to the water discharge hole, and the washing water may be guided to the swirling applying means in the state of the interrupted washing water flow. . 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. Therefore, it is possible to prevent the user who receives the flush water spout in the intermittent flow from feeling that the flush water intermittently hits the human skin. 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 washing water spouting in such an intermittent flow can be suitably used for ordinary ass washing and bidet washing in which continuous washing with washing water is required, and does not cause discomfort or discomfort. .

As a preferred embodiment of such an intermittent water discharge means, various means can be adopted as long as the means can make an intermittent flow at the above frequency. For example, an on / off valve for opening and closing a water supply path, It can be realized by a flow-type electromagnetic pump or the like, and the amount of water that increases or decreases due to intermittent operation can be completely increased or decreased from 0 to 100%, and can be experienced intermittently, and may be any range that is effective in saving water. , In a range of 10% to 100%, and in a mode in which the amount of intermittent water is variable according to time. If the intermittent frequency is set to the frequency of the commercial power supply, control of the valves and pumps becomes easy.

[0028] A pressure regulating 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 intermittent water discharge means. Can be. 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 wash water flowing through the water supply path affects the amount of wash water,
By adjusting the pressure of the cleaning water before and after the occurrence of the intermittent flow, it is possible to adjust the amount of the flushing water discharged in the intermittent flow.

[0029]

Other Embodiments of the Invention The present invention can also adopt the following other embodiments. That is, the nozzle has a plurality of the water discharge holes for each of the different water discharge targets, the water supply means supplies the wash water for each of the water discharge holes, and the swirl providing means comprises a water supply wash water for each of the water discharge holes. The turning force may be applied to the vehicle. In addition, a plurality of nozzles having the water discharge holes may be provided, each nozzle may be provided for each different water discharge target, and the turning imparting means may be provided for each water discharge hole of each nozzle.

[0030] In this way, the water is swirled and discharged onto different water discharge targets (the butt and bidet in local cleaning), and each water discharge target can be cleaned in a wide cleaning range. In this case, the degree of swirling of the washing water and its variable range can be set differently for each of the different water discharge targets. For example, in the local cleaning device, the bidet cleaning may be larger in swirling degree and wider in the buttocks cleaning than the butt cleaning. In this way, for bidet washing during menstruation, etc., by receiving a wide range of washing,
It is possible to increase the feeling of cleaning satisfaction.

As described above, when the cleaning water is swirled and discharged for each water discharge target, the flow of the washing water may be disturbed prior to the swirling. That is, the supply destination of the fluctuation or the intermittent cleaning water is switched to one of the swirling means for each of the water discharge holes, or switched to one of the swirling means for each of the nozzles. You can do so. In this case, the cleaning water can be swirled and discharged in a state of a pulsating flow or an intermittent flow to different water discharging targets, and each water discharging target can be cleaned. Moreover, at the time of cleaning each water discharge target, diversification of the cleaning feeling 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 different water discharge target. 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 preferred embodiment, a command means for instructing flush water discharge in a pulsating flow or an intermittent flow, and a frequency of a pulsating flow or an intermittent flow generated by a signal from the instruction means are changed. A frequency control unit that controls the frequency to be at least about 5 Hz (dead band frequency) at the time of landing on the surface to be cleaned can be adopted. 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.

[0033]

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 block diagram showing a schematic configuration of a local cleaning apparatus 300 according to the first embodiment.
FIG. 3 is a schematic perspective view schematically illustrating the nozzle head 170 of the cleaning nozzle included in the local cleaning apparatus 300 by seeing through the internal structure.

[0034] As shown in FIG.
Includes a water supply unit 302, a heat exchange unit 304, and a flow regulating valve 306 from the outside water supply source side. Then, the washing water whose flow rate has been adjusted by the flow regulating valve 306 is supplied to the washing nozzle 3.
08, and the cleaning water is discharged from the nozzle as described later. The cleaning nozzle 308 is configured to advance and retreat from the standby position in the apparatus main body to each of the buttocks and bidet cleaning positions by the nozzle drive motor 310. The local cleaning device 300 includes an electronic control device 312, and the electronic control device 3112 is operated in response to an operation of a cleaning button (not shown).
2, the nozzle advance / retreat drive, washing water supply and stop water, washing water warming, flow control valve control, and the like are performed.

Wash water (tap water) sent from a water supply source (tap water pipe) is guided to a water supply unit 302, and reaches a downstream heat exchange unit 304 after capturing dust and the like by a strainer of the unit. . The water supply unit 302
Is provided with a check valve (not shown), a pressure regulating valve for regulating pressure, and an electromagnetic valve for opening and closing the conduit in the pipeline. Therefore, in response to opening of the circuit by the solenoid valve, the washing water is supplied to the predetermined pressure (primary pressure: about 0.098 MPaＭＰabout 1.0 kg) by the pressure regulating valve.
f / cm ² ｝), and flows into the heat exchange unit 304 of the instantaneous heating type in a state where the pressure is adjusted. The water supply unit 3
A relief valve (not shown) is provided in a pipeline from 02 to the heat exchange unit 304 to avoid an inadvertent increase in pipeline pressure.

The heat exchange unit 304 is configured so as to instantaneously warm the passing cleaning water through energization of a built-in heater. A bimetal switch and a thermal fuse (not shown) for mechanically shutting off abnormal heating are mounted on the built-in heater or its vicinity.

In this case, the heat exchange unit 304 warms the cleaning water to the predetermined temperature with the built-in heater while detecting the temperature of the inflow / outflow cleaning water with a water temperature sensor (not shown). Then, the cleaning water heated in this way is subjected to flow rate adjustment by the flow control valve 306 and then the cleaning nozzle 3
08. The heat exchange unit 304 is provided with a float switch for preventing empty heating and a vacuum breaker for preventing washing water from flowing backward from the washing nozzle.

Next, the cleaning nozzle 308 will be described. As shown in FIG. 2, the cleaning nozzle 308 is provided with the flow regulating valve 6.
The head passage 34 through which the washing water from No. 5 passes extends to the nozzle head 170 portion. This nozzle head 170
The water discharge hole and the small-diameter communication passage 16 are located immediately below the water discharge hole 31.
3 has a washing water vortex chamber 171 communicating with the washing water vortex chamber 171. In addition,
Without providing the small-diameter communication passage 163, the water discharge hole 31 and the washing water vortex chamber 171 can be directly connected.
Further, the small-diameter communication passage 163 may be formed as the water discharge hole 31, that is, the water discharge hole 31 may be formed in substantially the same cylindrical shape.

The washing water vortex chamber 171 is a hollow chamber having an inner peripheral wall that is larger in diameter toward the bottom and is inclined toward the small-diameter communication passage 163. And, this washing water vortex chamber 171
Is connected to the head channel 34 eccentrically as shown in FIG. Therefore, the cleaning water flowing from the head channel 34 into the cleaning water vortex chamber 171 rotates along the large-diameter portion inner peripheral wall and the inclined inner peripheral wall as indicated by an arrow SY in the drawing. The washing water swirled in the washing water vortex chamber 171 in this manner passes through the small-diameter communication passage 163 and passes through the water discharge hole 3.
Water is discharged from 1.

The washing water discharged in this manner is affected by the swirling force of the washing water itself, and adopts a spiral (cone) swirling water discharge form as schematically shown in the figure. In other words, in such a swirling water discharge form of the cleaning water, a hollow cone-shaped KS shown in the drawing is formed of the water discharging cleaning water.

In the present embodiment, a swirling force is applied to the washing water in the washing water vortex chamber 171 to discharge the washing water in a spiral (cone) swirling spout form, thereby expanding the washing range. When the cleaning range is expanded, the cleaning nozzle 308 having the water discharging hole 31 as well as the water discharging hole 31 does not need to be moved. Therefore, the cleaning range can be easily expanded without moving the nozzle.

The swirling force of the washing water is equal to the washing water vortex chamber 171.
The inflow speed (wash water speed) determines the swirling degree of the wash water in the wash water vortex chamber 171. Therefore, by adjusting the flow rate of the washing water into the washing water vortex chamber 171 (washing water speed), in this embodiment, the flow rate is adjusted by the flow regulating valve 65, so that the spiral in the spiral swirling water discharge form is formed. The degree of spread can be adjusted variously. Moreover,
As described above, the swirling water discharge mode can be adopted only by causing the cleaning water to flow eccentrically from the head flow path 34 to the cleaning water vortex chamber 171. In this case, no special electric device such as a motor is required. Therefore, it is useful for energy saving.

Since the extent of the spiral affects the cleaning area, the cleaning area can be adjusted according to the present embodiment. Therefore, it is possible to perform local washing in various washing areas by swirling water discharge, and it is possible to impart a feeling of washing satisfaction with a wide range of washing area, a stimulating feeling by receiving swirling water discharge in a narrow range, and finally an enema feeling. it can.

Further, the repetition of the cleaning area can be realized by repeating the magnitude of the swirling (the extent of the spiral) of the swirling spout, specifically, by controlling the magnitude of the washing water repeatedly. Therefore, it is also possible to diversify the feeling of washing by repeatedly arranging the washing area, and obtain a massage effect. Note that the washing water speed can be variously changed by a method other than the flow control valve adjustment.

Next, an embodiment (second embodiment) in which air is mixed into the washing water which is swirled and discharged will be described. FIG.
FIG. 9 is a schematic perspective view schematically illustrating the internal structure of the nozzle head 170A of the second embodiment, with the internal structure seen through.

As shown in FIG. 3, the nozzle head 170A of the second embodiment has a cleaning water vortex chamber 1 in which the head flow path 34 is eccentrically connected similarly to the nozzle head 170 described above.
71 is provided. The nozzle head 170A includes a small-diameter communication passage 163 as an orifice 163A that connects the cleaning water vortex chamber 171 and the water discharge hole 31.
62 and an outside air introduction passage 164 communicating therewith. That is, the nozzle head 170A is connected to the outside air entrapment chamber 162.
The orifice 163 </ b> A and the water discharge hole 31 are arranged to face each other, and outside air is introduced from the outside air introduction passage 164 into the outside air entrapment chamber 162. Therefore, in the nozzle head 170A, a so-called jet pump having the cleaning water passing through the orifice 163A as the driving fluid, the air from the outside air introduction passage 164 as the driven fluid, and the water discharge hole 31 as a throat is configured. Become. The shape and the like of the cleaning water vortex chamber 171 are as described for the nozzle head 170.

Even in the nozzle head 170A, the cleaning water eccentrically flowing into the cleaning water vortex chamber 171 from the head flow path 34 turns along the inclined inner peripheral wall as shown by an arrow SY in the figure. . Then, the washing water swirled in this way passes through the orifice 163A and passes through the outside air entrapment chamber 1
When water is discharged from the throat (water discharge hole 31) through 62, the water is discharged with a large amount of air entrained therein.

The washing water discharged in this manner takes a spiral swirling water discharge form under the influence of the swirling force, similarly to the case of the nozzle head 170. Then, the cleaning water having the swirling water discharge form is discharged in a state where air is mixed by natural suction as shown in the figure. As described above, the washing water speed defines the swirling degree of the washing water, and also defines the aeration degree. Therefore, by adjusting the washing water inflow speed (washing water speed) into the washing water vortex chamber 171, not only the area of the washing area but also the degree of air entrapment can be variously adjusted. For this reason,
According to the second embodiment, it is possible to discharge water with various cleaning areas and discharge water with various amounts of air mixed in.
Soft feeling and the like can be imparted.

In the second embodiment, the orifice 163A
Are provided in the same direction as the wash water spouting direction,
The damping of the water force can be suppressed. Further, the amount of air entrainment can be increased by the action as the jet pump. Therefore, the amount of washing water can be reduced by the amount of air increase, and the effectiveness of water saving can be further improved,
A softer feeling of washing can be provided.
Further, since the orifice 163A and the flushing water discharge 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.

FIG. 3 shows the state of spouting of the washing water instantaneously, but since this state occurs continuously,
The actual water discharge form is substantially the same as that shown in FIG. 2, and a hollow cone-shaped KS is formed of the water discharge cleaning water.

Here, the nozzle head 170 of the second embodiment is used.
The air mixing ability in A will be described.

FIG. 4 is a schematic diagram schematically showing a comparative example nozzle head 161 to be compared with the nozzle head 170A. As shown in the drawing, the comparative example nozzle head 161 has a nozzle head 170 except that it does not have the cleaning water vortex chamber 171.
A jet pump is constituted by the orifice 163A, the outside air introduction passage 164, and the water discharge hole 31 as a throat.

With respect to the nozzle head 170A of the second embodiment and the comparative example nozzle head 161, the air entrainment amount was measured by variously changing the area ratio (S2 / S1) of the orifice diameter S1 and the throat diameter S2. When this air entrapment amount was expressed as a ratio of air to water (air mixing ratio%) and plotted for each nozzle head,
The result as shown in FIG. 5 was obtained. That is, in the comparative example nozzle head 161 having no vortex chamber, the air entrainment amount of 40 to 80% can be obtained in the area ratio range of 1 to 4. However, in the nozzle head 170A, the air entrainment amount can be increased by about 1.3 to 2 times as compared with the nozzle head 161 of the comparative example, and further from the viewpoint of improving the effectiveness of water saving and providing a soft washing feeling. It is advantageous. 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 as follows. That is, a hot wire type micro air flow meter is connected to the air suction port to directly measure the air flow rate, calculate the air mixing rate from this air flow rate and the water supply flow rate to the nozzle, and use this as the air entrainment amount. 5 was obtained.

Further, as shown in FIG.
In the case of 70A, since the water discharge form of the cone shape KS is adopted, the water discharged from the nozzle head 170A lands on the portion to be cleaned so as to surround the center of the portion to be cleaned. 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 cone outer wall. For this reason, air entrapment indicated by a white arrow in the drawing occurs inside the cone, and a dripping portion KSC in which the landing water is dripped in a substantially columnar shape is formed substantially at the center of the landing portion of the portion to be cleaned. 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 170 shown in FIG.
But the same is true.

The nozzle heads 170, 1 shown in FIGS.
The 70A, like the existing local cleaning device, can realize a spiral swirling water discharge form or an air-mixed water discharge simply by guiding cleaning water to each nozzle head in a continuous flow state. Then, by simply supplying the continuous flow of washing water, which has been subjected to normal flow rate adjustment with a flow rate adjusting valve or the like, to these nozzle heads, it is possible to discharge water with various cleaning areas and water with various amounts of air mixing. Pleasant washing feeling and soft feeling can be imparted. That is, the above-described nozzle heads 170, 170
According to A, the existing device can be easily improved so that a comfortable cleaning feeling, a soft feeling, and the like can be imparted only by replacing the nozzle head with an existing local cleaning device that discharges water in a continuous flow.

The nozzle heads 170 and 170A
According to the above, 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 expressed by the following equation. Where ρ is the washing water density,
V indicates a water discharge speed, Q indicates a water discharge amount, and S indicates a water discharge hole opening area. F = ρ · V · Q = ρ · (Q ² / S)

In the water discharge mode of the nozzle heads 170 and 170A, when the cleaning water is discharged from the water discharge holes 31, the cleaning 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 heads 170 and 170A, the actual water discharge hole area S1 when the cleaning water passes through the water discharge hole is an annular area along the water discharge hole wall surface, and is smaller than the water discharge hole opening area S. Therefore, when the force F when the washing water is simply spouted from the water spouting hole and the force F1 in the water spouting mode of the cone shape KS are compared, F
1 is represented by the following equation and S> S1, so that F1> F. F1 = ρ · (Q ² / S1)

In addition, in the nozzle head 170A, 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 170A, since the force F1 exerted by the cleaning water can be increased even with the same water discharge amount Q, a small water discharge amount is required to obtain the force F required for local cleaning. When trying to increase this force F by simply narrowing the flux and increasing the flow rate, the line feels thin and painful. As it shifts, I do not feel any pain despite the thinning of the wire bundle and the increase in flow velocity.

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, simply turning the cleaning water to discharge water, that is, the nozzle head 170
It is possible to increase the effectiveness of water saving only by adopting. In the nozzle head 170A in which air is mixed as described above, the softness can be enhanced by using the water mixed with water. Therefore, according to the nozzle head 170A, it is possible to execute water discharge that can exhibit a soft feeling while saving water.

It is also possible to force air into the nozzle head 170A by using an air pump or the like. For example, the orifice 163A is formed of a porous tubular body, and air is forcibly mixed into the tubular orifice from the outside into the internal passage. In this case, the amount of air mixed in increases, so that a softer feeling can be provided. In this case, the air pump can be used as variable means for varying the degree of the turning force. That is,
By increasing the amount of aeration, the actual flow path through which water passes is narrowed,
Since the flow velocity can be increased, the flow velocity can be varied by adjusting the output of the air pump.

Next, a third embodiment will be described. In this embodiment, cleaning nozzles are separately provided for cleaning the buttocks and the bidet. FIG. 7 shows a local cleaning apparatus 300 according to the third embodiment.
FIG. 2 is a block diagram illustrating a schematic configuration of A. As shown in the figure, the local cleaning device 300A includes a flow path switching valve 307 downstream of the flow control valve 306, and supplies the flow-regulated cleaning water to one of the cleaning nozzles 308A and 308B by the switching valve. The nozzle drive motor 310 is configured to move the cleaning nozzle 308A for buttocks cleaning between the standby position and the buttocks cleaning position, and to move the cleaning nozzle 308B for bidet cleaning between the standby position and the bidet cleaning position. ing.
It should be noted that a flow control switching valve that performs flow control and flow path switching at the same time can be used instead of the above two valves.

The cleaning nozzles 308A and 308B may have the nozzle head 170A that does not mix air, and may also have the nozzle head 170A that mixes air. Alternatively, one of the cleaning nozzles may have the nozzle head 170 that does not mix air, and the other cleaning nozzle may have the nozzle head 170A that mixes air.

According to the third embodiment, the washing water is swirled and spouted by different washing nozzles for different water discharge targets such as the buttocks and the bidet, so that each water discharge target can be cleaned in a wide cleaning range. In this case, the bidet cleaning may have a larger swiveling degree and a wider cleaning range than the buttocks cleaning. In this way, in the bidet washing or the like at the time of menstruation, the washing feeling can be increased by receiving a wide range of washing. Then, for each cleaning nozzle, it is only necessary to guide the cleaning water to the cleaning water vortex chamber 171 of each nozzle in the same cleaning range, that is, the same cleaning water flow rate, so that the flow rate control for each nozzle becomes easy.

Next, another embodiment (fourth embodiment) of swirling water discharge using the cleaning water vortex chamber 171 described in the nozzle heads 170 and 170A will be described. In the fourth embodiment, a single washing nozzle has a spout hole for washing the buttocks and a spout hole for cleaning the bidet. There is a feature in performing.
FIG. 8 is a block diagram illustrating a schematic configuration of a local cleaning device 320 according to a fourth embodiment. FIG. 9 is a schematic cross-sectional view of a main part for describing a schematic configuration of a nozzle head 200 according to another embodiment. FIG. 10 is a schematic perspective view in the X direction, and FIG. 11 is a perspective view of the bottom cover 210 of the nozzle head 200.

As shown in FIG. 8, the local cleaning device 320 according to the fourth embodiment has a cleaning nozzle 24 and a flow path switching valve 71 integrally attached to the end of the nozzle in addition to the water supply unit 302 and the like. . The cleaning nozzle 24 includes three flow paths described below in the nozzle, and discharges cleaning water from each water discharge hole of the nozzle head 200 to the tail or bidet through each flow path. The flow path switching valve 71 is a so-called disc-type switching valve, and is configured to open one of the three flow paths in the nozzle to guide the flow-regulated washing water to the open flow path. ing.

As shown in FIGS. 9 and 10, the nozzle head 200 is provided with water discharge holes 31 to 33 for normal butt cleaning, butt soft cleaning and bidet cleaning, and an upper lid 202 mounted on the upper surface of the head. To have. The upper lid 202 is detachable, and various types of water outlets 31 to 33 having different hole diameters are prepared, so that a plurality of combinations of the hole diameters of the water outlets 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 this air gap chamber 204 as follows.

The first head passage 34 for tail water discharge is directly connected to the air gap chamber 204, and the end of the passage faces the tail water discharge hole 31. As shown in FIGS. 9 and 10, 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. 10, 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 up 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 head flow paths 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 swirls 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 normal butt washing by the butt spouting hole 31, washing water spouting is performed in a state where air is mixed, and at the time of soft washing and bidet washing by the soft spouting hole 32 or the bidet spouting hole 33, Water can be discharged in a state where air mixing and washing water turning are achieved. And
In each washing, the above-mentioned effects obtained by air mixing and swirling spouting of the washing water can be obtained. In FIG. 9, for the sake of explanation, the outside air introduction passage 212 is drawn on the nozzle tip side in the cross-sectional view, but it may be opened from the lower surface of the head so as to be located between the water discharge holes as shown in FIG. .

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. When the standing plate 213 was not provided, the turning force became unstable when the flow rate was small, and the scattering was large. And splattering can be reduced. Further, by controlling the turning state, the bidet spouting can be performed every time when the air entrainment amount is almost the same.

Here, the head flow path and the nozzle flow path in the nozzle head 200 will be described. FIGS. 12 and 13 are exploded perspective views of main parts of the nozzle head 200 and the cleaning nozzle 24. FIG.

As shown, the nozzle head 200 is
It is positioned and assembled to the tip of the cylindrical cleaning nozzle 24 with the seal 240 interposed therebetween. The positioning of these members is determined by the groove 2 on the outer periphery of the nozzle tip and the peripheral edge of the seal body.
41 is carried out by fitting a ridge 242 on the inner wall of the nozzle head 200.

The nozzle head 200 includes the above-described first to third head flow paths 34 to 36 such that these flow paths are located at respective vertices of an isosceles triangle. In this case, the second and third head channels 35 and 36 are located at both ends of the bottom side. As shown in FIG. 12, the cleaning nozzle 24 has connection pipes 34a to 36a at its tip, and the connection pipes are positioned in the above-described first to third head flow paths 34 to 36. It is imitated and formed. The cleaning nozzle 24 has nozzle tip channels 34b to 36b communicating with the connection pipe portions 34a to 36a at the tip portion, and has three divided nozzle channels 34c to 36c at the tubular portion. . The seal body 240 includes seal cylinders 243 protruding at both ends so as to fit in the first to third head flow paths 34 to 36 and the nozzle tip flow paths 34b to 36b, respectively. Seals between the flow paths 34b to 36b and between the nozzle head 200 and the cleaning nozzle 24. The nozzle head 200 is fixed to the tip of the cleaning nozzle by fitting an engaging claw (not shown) into an engaging recess or the like.

The cross sections of the nozzle end flow paths 34b to 36b and the nozzle flow paths 34c to 36c are different.
Since the cleaning nozzle 24 is a resin molded product, the respective nozzle flow paths and the nozzle tip flow paths can be formed so as to communicate without any trouble.
In this case, if a plate member 245 (see FIG. 13) having an arc-shaped cross section is inserted into the nozzle flow paths 34c to 36c in close contact with the curved wall of the nozzle flow path, the area of the nozzle flow path is reduced and the flow rate of the washing water is reduced. Can be enhanced. Therefore, the soft water discharge holes 32
In addition, in the soft cleaning of the buttocks and the bidet cleaning by the bidet water discharge holes 33, the swirling degree of the cleaning water can be increased to perform a wide range of cleaning, and a sufficient cleaning feeling can be provided.

Next, a fifth embodiment will be described. The fifth embodiment is characterized in that the width of the cleaning area is adjusted. FIG.
FIG. 4 is a schematic perspective view schematically illustrating the nozzle head 220 of the fifth embodiment by seeing through its internal structure.

As shown, the nozzle head 220 is
Like the above-described nozzle head 170A, the outside air entrapment chamber 1
62, orifice 163A, spout 2 as throat
21 and a jet pump constituted by the outside air introduction passage 164, and the washing water vortex chamber 1 is provided below the orifice 163A.
71. The eccentric path 2 eccentrically connected to the cleaning water vortex chamber 171 as a nozzle water supply path for the cleaning water.
22 and an axis directing path 223 connected to the vortex chamber so as to direct its axis. In addition, a cleaning water supply unit (not shown) for supplying cleaning water is provided independently of the two paths. This washing water supply unit is provided with an axial centering path 223.
Water supply only to the shaft, the axis-oriented path 223 and the eccentric path 2
Simultaneous supply of washing water to both paths 22 is possible, and at the time of the water supply, the flow rates Q1 and Q2 of each path are adjusted. If the washing water supply unit supplies water only to the eccentric path 222, the cleaning water supply unit is the same as the nozzle head 170A described above.

Here, the state of water discharge when the cleaning water is discharged from the nozzle head 220 will be described.

First, when the washing water is supplied only to the axial center directing path 223, the washing water flows into the washing water vortex chamber 171 in such a manner as to direct the axis thereof. The washing water that has flowed in this way is hardly swirled in the swirl chamber and the orifice 1
63A is added, and air is entrained when passing through the outside air entrapment chamber 162, and water is 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 water discharge form does not become the cone-shaped KS but remains substantially cylindrical. For this reason, as shown in FIG. 14, 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 inject 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-described phenomenon is caused by the fact that the cleaning water is supplied simultaneously to both of the axis-directed path 223 and the eccentric path 222, and the flow rate Q1 of the axis-directed path 223 and the eccentric path 22
This occurs even when the flow rate Q2 of Q2 is Q1 >> Q2.

On the other hand, the flow rate Q1 of the axial direction path 223
When the cleaning water is simultaneously supplied to both of the eccentric paths 222 while adjusting the flow rate Q2 of the eccentric paths 222, the following is performed.
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, the amount of air entrained in the outside air entrapment chamber 162 increases due to this turning, and water can be discharged with a sufficiently soft feeling. Since the water discharge form is a cone-shaped KS, a large cleaning area SMc can be cleaned while giving a sufficient feeling of water volume due to a large amount of air mixing as shown in FIG. In addition, since it is the water discharge form of the cone-shaped KS, the washing feeling and the washing effect described with reference to FIG. 6 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 vortex 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. Water discharge form is cone-shaped K
Although it is S, the cleaning area SMb is reduced and the amount of air mixed in is reduced as shown in FIG. However, compared with the case of supplying the washing water using only the axis directing path, a sufficiently soft feeling and a feeling of water volume can be obtained.

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

As described above, the softness and the like of the nozzle head 220 can be adjusted as described above. Therefore, the nozzle head 220 can be configured as follows. When a normal buttocks washing button (not shown) is operated and normal buttocks washing is desired, the washing water is supplied only from the axial direction 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 axial direction path 223 and the flow rate Q2 of the eccentric path 222. Are 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 simultaneously supplied to both paths, and at this time, both flow rates are adjusted so that Q2 becomes sufficiently larger than Q1. The flow rate can be changed between a predetermined range in which Q2 and Q1 are close to each other and a range in which Q2 is sufficiently larger than Q1, and the water pressure is adjusted with the water pressure setting button during the soft or bidet cleaning. It can be so. This can be repeated periodically. In this case, the cycle may be a fixed cycle or a random cycle. By doing so, a new washing feeling, a massage effect, and the like can be obtained.

As described above, according to the nozzle head 220 of the fifth embodiment, it is possible to adjust the presence or absence of the enema effect and the feeling of softness with a single water discharge hole, and to perform different cleaning such as buttocks, softness, and bidet. The cleaning can be performed while satisfying different cleaning feelings required for each of these cleanings. Since a single water discharge hole is sufficient, the size of the nozzle head can be reduced, and the device can be reduced in size and portability.

Next, a description will be given of an embodiment characterized in that the cleaning water is supplied to the cleaning nozzle capable of executing the swirling water discharge as described above. FIG. 15 is a block diagram showing a schematic configuration of a local cleaning apparatus according to the sixth embodiment, focusing on a waterway system, and FIG.
FIG. 17 is a cross-sectional view illustrating a schematic configuration of an accumulator 73 provided in the waterway system, and FIG. 17 is a cross-sectional view illustrating a configuration of a wave generating device 74 similarly provided in the waterway system. FIG.
8 is an explanatory diagram for explaining the flow of the washing water by the wave generating device 74, FIG. 19 is a schematic diagram schematically showing the installation of the wave generating device 74, and FIG. 20 is a schematic diagram of the control system. It is a block diagram showing a structure.

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 remote operation device (not shown) or a button operation of a main body sleeve or the like. . As shown in FIG. 15, 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, washing water is supplied from the wave generation unit 70 to the cleaning nozzle 24 via the flow path switching valve 71 of the cleaning nozzle 24, and the wave generation unit 70
The cleaning water is discharged from the nozzle as described later. 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 60 are connected by the upstream water supply line 51, and the flow path switching valve 71 downstream of the wave generation unit is connected by the downstream side water supply line 72.

The upstream water supply pipe 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 main 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 predetermined pressure (primary pressure: about 0.098 MPa 圧 about 1.0 k) by the pressure regulating valve 54.
In a state where the pressure is adjusted to gf / cm ² ｝), it flows into the heat exchange unit 60 of the instant heating type. As described above, the flow rate of the cleaning water flowing in 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.

A first flushing water discharge line 56 a with a relief valve 56 interposed is provided in the upstream water supply line 51 between the water inlet side valve unit 50 and the heat exchange unit 60. 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 so that its end faces the deodorizing air inlet and the local drying air outlet. 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 side valve unit has a heat exchange section 62 having a built-in heater 61. 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 Kovar electrode plated with Ni is used for the current-carrying 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. Thus, the heater 61
Since the heat exchange section 62 has good thermal responsiveness, the heat exchange section 62 only needs to have a capacity capable of instantaneously heating the washing water by the heater 61, and the heat exchange section, and hence the heat exchange unit as a whole, can be downsized. Is possible. In addition, since the structure of the heat exchange unit 60 is simplified, there are advantages in manufacturing such as reduction in the number of assembling steps and cost reduction. 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 includes a heat exchange unit 62
The temperature of the wash water flowing into the heat exchange unit 62 and the temperature of the wash water flowing out of the heat exchange unit 62 are determined by an inlet water temperature sensor SS16a and an outlet water temperature sensor S.
While detecting in S16b, the heater 61 warms the cleaning water to the cleaning water at the set temperature. Then, the cleaning 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. 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 cleaning water can be reduced together with the effect of keeping the cleaning 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 becomes 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 heating of the heater. . The heater 61 of the heat exchange unit 60 is optimally controlled by an electronic control unit 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 in 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. 16, the accumulator 73 includes a housing 73a connected to the upstream water supply pipe 51 upstream of the wave generator 74, and a damper chamber 73b in the housing.
And a spring 73d that applies a biasing force to the damper 73c. 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 unit 6
The effect of the water hammer on the wash water temperature distribution of No. 2 can be reduced, and the temperature of the spout wash water can be stabilized.

In this case, if the accumulator 73 is disposed close to or integrated with the wave generating device 74, 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. In this case, the accumulator 73 is configured to have only the damper chamber 73b as a simple air chamber without the damper 73c and the spring 73d for biasing the damper 73c, or to intentionally inflate the upstream water supply pipe 51 partially upward. It can also be formed as such an air reservoir.

As shown in FIG. 17, the wave generating device 74 has a plunger 74b slidably provided in a cylinder 74a connected to the upstream and downstream water supply conduits 51, 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 original position (plunger original position) shown by the 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 line 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, it is sent to the downstream water supply pipeline 72.

When this state is represented by a diagram, as shown in FIG. 18, the cleaning water is supplied to the wave generating unit by the pressure P
With the pressure pulsating around in, water is sent from the wave generation device 74 to the downstream water supply conduit 72, and further to the washing nozzle 24, and is discharged to a local portion as described later. In addition, the washing water pressure sent downstream from the wave generating device 74 does not become zero due to the flushing water flowing into the cylinder 74a via the check valve 74f when the plunger 74b returns to its 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, the above introduced water pressure Pin, which is the center of the pulsation, is regulated by the pressure regulating valve 54, so that 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. 18 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, only the coil excitation for reciprocating the plunger 74b is required to generate the pulsating flow of the washing water.
Can be simplified.

In this embodiment, as shown in FIG. 15, since the wave generating device 74 is disposed downstream of the heat exchange unit 62 of the heat exchange unit 60, the pulsating flow of the washing water is
Since the diameter is larger than that of the water supply pipe, the water does not pass through a heat exchange section that easily causes pulsation damping. Therefore, the pulsating flush water can be sent to the downstream water supply pipe 72 and, consequently, the washing nozzle 24 without being affected by the pulsation attenuation by the heat exchange unit.

Further, when installing the wave generating device 74, a so-called anti-vibration rubber was 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, the spring constants k1 and k2 and the damping coefficients c1 and c2 that are effective for vibration
By selecting an anti-vibration rubber in such a manner, a high damping effect can be exhibited, and the propagation of vibration 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 it is possible to avoid fatigue due to deformation and contraction / expansion of the heat exchange section. 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 set to be 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 and 72 can be configured as follows. For example, the water supply pipes are made of flexible pipes of the same material with high hardness, and the pipe wall of the downstream water supply pipe 72 is made thicker than the upstream water supply pipe 51, so that the water supply pipes have different hardness. Can occur. 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 as a main device. The electronic control unit 80 includes various sensors such as the above-described seating sensor, incoming / outgoing water temperature sensor, float switch, fall detection sensor SS30, signal from the washing water amount sensor SS14, and various operations such as a washing button in a remote operation device. The operation status of the buttons and knobs is input via a wired or wireless (optical signal) via an input circuit. In this case, the washing water amount sensor detects the amount of washing water in the downstream water supply line 72,
The detection result is output 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 on / off valve of the water inlet side valve unit 50, controls the energization of the heater of the heat exchange unit 60, controls the flow control valve, and controls the display of the main body display unit based on the input signal. A power supply 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 energization control of a heating unit (not shown),
Based on the above signal, a pulsation frequency control through a nozzle drive motor control of the nozzle device 40 described later and an excitation control of the pulsation generating coil 74c is executed. 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. 21 is a schematic perspective view showing the nozzle device 40, FIG. 22 is a schematic cross-sectional view taken along line 22-22 in FIG. 21, and FIG. 23 is an explanatory diagram for explaining how the cleaning nozzle 24 advances and retreats.

The nozzle device 40 is housed and installed in the main body of the local cleaning device 10. The nozzle device 40 includes a base 41 fixedly installed on the main body, a nozzle driving motor 42 incorporated and arranged on a gantry 41a on the upper surface of the base,
The forward / reverse rotation of this motor is converted into a forward / backward motion, and the cleaning nozzle 2
4, a nozzle holder 41b erected on the upper surface of the base and slidably holding the washing nozzle 24 on the toilet bowl side, and guiding the washing nozzle 24 along a nozzle advance / retreat trajectory described later. And a guide rail section 44.

The transmission mechanism 43 includes a driving pulley 43a fixed to the rotation shaft of the nozzle driving motor 42, driven pulleys 43b before and after along 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 holding body 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 curved and formed concentrically with the arc-shaped nozzle advance / retreat orbit 45 shown in FIG. 23, and is installed below the cleaning nozzle 24. And, as shown in FIG. 22, the guide rail portion 44
The cleaning nozzle 24 is engaged with the cleaning nozzle 24 via a track holding body 24c below the rear end. This track gripper 24c
Grips the right and left rail portions 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 the 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 Teflon (registered trademark) coat,
It is manufactured using a rubber-based material that has been subjected to a surface treatment such as a halogen treatment and a satin finish. Therefore, even if the pulsating cleaning water flows from the wave generating device 74 into the cleaning nozzle as described later, and the cleaning nozzle generates a vibration due to the pulsating flow, the vibration can be prevented from propagating to other members. 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 case of the cleaning nozzle 24, the cylindrical portion 24a is formed to have the same radius of curvature as the nozzle advance / retreat orbit 45 and to be curved along the axial direction. For this reason,
The cleaning nozzle 24 is moved forward and backward between the standby position HP in the main body and the cleaning position (butt cleaning position AWP, bidet cleaning position VWP) in the toilet 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 nozzle is in contact with the outer wall of the nozzle. If a rubber-based material that exhibits the slidability and the vibration absorbing function after receiving the compounding treatment or the surface treatment is disposed at the contact portion, the above-described effect of preventing vibration propagation and the effect of avoiding generation of abnormal noise are provided. Can be increased.

As a result, as shown in FIG. 23, the washing 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 of the back end of the washing nozzle (nozzle height) from the top of 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 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, the above-mentioned washing nozzle 24 has a straight pipe shape, and the nozzle advance / retreat trajectory 4
5 can also be a linear trajectory, and the nozzle can be moved back and forth along the linear trajectory.

In the nozzle device 40 of this embodiment, as described above, the cleaning nozzle 24 and the guide rail portion 44 adopt a positional relationship in which the cleaning nozzle 24 and the guide rail portion 44 are vertically overlapped, 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. 21) 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 isolating rubber, and the generation of the abnormal noise due to the vibration can be suppressed.

Next, a description will be given of the peripheral configuration of the cleaning nozzle 24 of the sixth embodiment. The cleaning nozzle itself has a curved shape in addition to the nozzle head configuration and the flow channel configuration. It is the same as the cleaning nozzle described. FIG. 24 is a schematic cross-sectional view of a main part for describing a configuration of a flow path switching valve 71 included in the cleaning nozzle 24, and FIG.
FIG. 3 is an exploded perspective view of a main part of the flow path switching valve 71.

As shown in FIGS. 21, 22 and 24, the flow path switching valve 71 is located at the rear end of the washing nozzle 24. Then, the following configuration is provided to switch the supply destination of the pulsating flow of the wash water sent from the wave generation device 74 to the nozzle flow paths for the bottom cleaning, the soft cleaning, and the bidet cleaning of the cleaning nozzle 24.

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. 22, that is, the first nozzle flow path 34c of the buttocks cleaning nozzle flow path, and the first nozzle flow path of the soft cleaning nozzle flow path The second nozzle flow path 35c and the third nozzle flow path 36c of the bidet cleaning nozzle flow path are opened so as to communicate with the respective flow paths. That is, the communication holes are arranged along with the openings of the nozzle flow paths at the rear end of the cleaning nozzle. The first to third nozzle flow paths 34c to 36c described above.
c is a nozzle head 200 at the tip of the nozzle (FIGS. 9 to 13).
), And is formed in the longitudinal direction of the cylindrical portion 24a.

The rotor 71c has a notch 71 that 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 rotation shaft of the drive motor 71k of the flow path switching valve 71, and positions the rotation 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. Since the notch 71j selectively opens one of the communication holes as described above by the rotation of the rotor 71c, the pulsation from the wave generation device 74 is applied to the nozzle flow path corresponding to the selected communication hole. Stream wash water is supplied.

In this case, the washing water from the wave generation device 74 passes through the downstream water supply pipe 72 (see FIG. 15) and the connection joint 71s provided in the casing 71a of the flow path switching valve 71, and the flow switching valve 71 Flow into This connection joint 71s
In connecting the downstream water supply line 72 from the wave generation device 74 to the water supply device, measures such as disposing the wave generation device 74 below the connection joint 71 s are taken, so that air cannot be accumulated in the middle of the downstream water supply line. I did it. 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 7
The pipe line from the pulsating flow of the washing water in 4 to 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, a buffer material such as a vibration-proof rubber is disposed at a place where the downstream water supply pipe 72 can come into contact with surrounding members. Specifically, a vibration isolating rubber was attached to the surrounding member side, or the vibration isolating 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 (abbreviation: PPS), polyacetal (abbreviation: POM), polybutylene terephthalate (abbreviation: PBT), glass fiber reinforced polybutylene terephthalate (abbreviation: 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. Further, the downstream water supply pipe 72 leading to the nozzle device 40 can be reduced to a single line, so that the degree of load on 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.

As described above, the flow path switching valve 71 (FIG. 21)
When the cleaning water supply destination is switched to one of the first to third nozzle flow paths 34c to 36c at the rear end of the nozzle, the cleaning water passes through the switched nozzle flow path and the head flow path. After that, water is spouted from the spouts of the buttocks, soft and bidet. In this case, since the pulsating flush water is supplied from the wave generator 74, pulsating flush water is discharged from each of the water discharge holes. With the application of the swirl by the chamber 171, the state of the swirling water discharge also occurs at the same time.

Each of the water discharge holes 31 to 31 of the nozzle head 200
The bottom water discharge hole 33 has the smallest hole diameter, and the bidet water discharge hole 33 and the water discharge hole 32 have a larger diameter than the bottom water discharge hole. For this reason, in a situation where the water pressure is set to a constant value by a water pressure setting button of a remote control device (not shown), the water discharge speed of the washing water from each water discharge hole is the fastest in the bottom water discharge hole 31, and The water discharge holes 33 and the soft water discharge holes 32 are slower than the hip water discharge holes 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.

Next, the features of the cleaning water spouting by the local cleaning device 10 of this embodiment will be described by taking ass cleaning as an example. FIG. 26 is an explanatory diagram illustrating the state of excitation of the pulsation generating coil 74c of the pulsation generating device 74 that generates pulsation at the time of flushing water discharge. FIG. FIG. 28 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 200.

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. 40) 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. Thereby, from the wave generation device 74 to each water discharge hole of the nozzle head 200,
Wash water is supplied in a pulsating flow state in which the pressure periodically fluctuates up and down, and the pulsating washing water is discharged from each water discharge hole. At this time, the electronic control unit 80 variably controls the frequency of the above-described pulse signal in a predetermined frequency range, and controls the duty ratio of the on / off of the coil excitation pulse. 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 cleaning 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. 26, the pulsation cycle MT shown in FIG. 18 is set to a cycle T1, and the ON time of the pulse signal is set to t1.
Then, the duty ratio is (t1 / T1) × 100
(%). When the pressure pulsation as shown in FIG. 18 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. 27, the amount of water of such a pulsating flow increases and decreases in the range from the maximum flow rate Qmax to the minimum flow rate Qmin, and the flow rate also increases and decreases in the range from the maximum flow rate Vmax to the minimum flow rate Vmin. In FIG. 27, the reason why the minimum flow rate Qmin and the minimum flow velocity Vmin are not zero is because the pulsating pressure by the wave generation device 74 is not zero as described above even at its minimum.

In this case, as described above, the introduced water pressure Pin
Is adjusted by the pressure regulating valve 54, the up-down shift of the pulsation
The maximum flow rate Qmax and the minimum flow rate Qmin and the maximum flow rate Vmax and the minimum flow rate Vmin shown in FIG. 27 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 washing water of the continuous flow is spouted from the spout hole (for example, the butt spout hole 31) as in the prior art, the washing water from the spout hole becomes a continuous flow as shown in FIG. Take the form of water discharge. On the other hand, when the pulsating flow of cleaning water is discharged as described above, as shown in FIG. 28 (B), the cleaning water is discharged in a water discharge form that can be expressed as a discrete or water mass state. You. Thus, the wave generation device 74
The reason why the pulsating wash water is ejected from the water discharge hole of the washing nozzle to be in a discrete or water mass state will be described with reference to FIGS. 27 and 29.

FIG. 29 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 a 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.
The respective portions of the wash water of the pulsating flow of No. 7 are represented 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 (A) of 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 this flow velocity V3 is the maximum flow velocity Vmax shown in FIG. 27, the wash water discharged by the pulsating flow has a water discharge form in which a state of a united water mass appears at each pulsation cycle MT, and is discharged from the discharge hole. Will have been. 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. In addition, each of these water masses is discharged from 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 as a continuous flow from the tail water discharge hole 31 and the case where the washing water is ejected as a pulsating flow. The pulsating flow has twice or more the cleaning intensity with 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) In addition, the force at the time of collision with the wall surface is represented by f, and the time required for the cleaning water flow at the speed V to be reduced to 0 and disappear is Δ.
Assuming that t, the energy E is represented by the impulse by equation (2), and the force at that time is represented by equation (3), where α is the deceleration. E = fΔt (2) f = mα (3)

FIG. 30 is an explanatory diagram illustrating a state in which the washing water stream collides with the wall surface. In FIG. 30, the water mass is W
Assuming the case of three forms 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 has a long cross-sectional area S1, the water mass W2 has a short cross-sectional area S2 twice as large as S1, and the water mass W3 has a cross-sectional area S1 and a long water mass. W1
Is a form of 1/2. In these forms, the water mass W
1 corresponds to a continuous flow, and the water mass W3 corresponds to a pulsating flow. At this time, the times Δt1 and Δt2 until the water mass W1 and the water mass W2 collide with the wall surface and disappear are given as Δt1> Δt2. This means that from equation (3), the deceleration α is large and the water mass disappears with a large force in a short time. The force f1 of the water mass W1 and the force f2 of the water mass W2 are 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. From this, the water mass W3 corresponding to the pulsating flow has a mass of m / 2 compared to the water mass W1, but the force f
3 does not decrease much compared to f1. Therefore, when jetted as a pulsating flow, the amount of water can be reduced as compared with 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.

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 volume will be described. FIG. 31 is an explanatory diagram illustrating a state in which the pressure sensor plate Ps is installed so as to be opposed to the buttocks discharge hole 31 by 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. 32 shows the result. FIG. 32 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. 32 (A) shows that the cleaning water reaching the water discharge hole has a flow rate of 1.1 L / min. FIG. 32 (B) shows the measurement result when the flow rate of the washing water reaching the spout hole is 0.1.
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. 32B is greatly increased, although the amount of washing water is reduced by half compared to the continuous flow of FIG. 32A. ing. This indicates that the washing pressure on the water body is large, that is, the washing strength is large.
FIG. 33 is a timing chart showing a detection signal detected from one of the detection units. FIG.
FIG. 33B 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. 32B than in the continuous flow of FIG. As described above, the pulsating flow has an extremely large volume as compared with the continuous flow, and it can be understood that the pulsating flow has excellent detergency when the sensual element of the cleaning feeling is embodied in a numerical value.

FIG. 34 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,
It shows the required average water discharge. As can be seen from FIG. 34, 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 as compared with 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 hole, the cleaning strength and the user's feeling of cleaning can be dramatically increased.

When the pulsating flow of the washing water is spouted, the washing intensity is increased and the stimulation to the human body is increased. This can be explained as follows. In general, a stimulus that can be sensed at the same location on the human epidermis (in this embodiment, water masses W1, W shown in FIG. 30)
2. When a stimulus due to the collision of W3 is intentionally repeatedly applied, the repetition interval (in this embodiment, the pulsation cycle M
When T) is long and the repetition frequency is low, a 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 flow rate or flow rate of the washing water is repeatedly discharged (hereinafter, referred to as repeated water discharging) as viewed from the human skin to be stimulated. 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 a 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 hardly perceives the vibration based on intentional repeated water discharge. Therefore, it is difficult to recognize the water discharge mode (the flush water discharge form in the pulsating flow) that the water is intentionally repeatedly discharged, and the discomfort due to unnecessary vibration is further reduced.

At a repetition frequency of about 15 Hz or more, even the average part of the human epidermis exceeds the vibration recognition frequency, so that the majority of persons with normal perception do not feel discomfort. Furthermore, at a repetition frequency of about 20 Hz or more, even a sensitive part of the human body 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 body 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).
(60 Hz in a 0 Hz area), which also has the effect of facilitating driving. 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 this case, 5 out of the above-mentioned dead zone area
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 the 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,
An area from z to about 60 Hz or about 80 Hz may be set as a boundary area, and a frequency area above this boundary area may be set as a certain dead zone. In this way, it is possible to ensure that the stimulus change is not recognized.

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 repetitive water discharge. When the repetition frequency becomes a repetition frequency of 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, and in this embodiment, the user who receives the collision of the water mass shown in FIG. The majority of people cannot perceive the impact of this body of water as intermittent and can make it feel as if it is a continuous flow of wash water.

The description will be made with reference to the drawings. FIG. 35 is an explanatory diagram for explaining the reason why the cleaning intensity varies depending on the increase or decrease of the frequency. FIG. 35A is determined by this period because the pulsation period MT is large even with the same amount of cleaning water than FIG. 35B. This shows a state where the pulsation frequency fmt (= 1 / MT) is small. In FIG. 35A and FIG. 35B, the size can be made as large as the above-mentioned water mass by the length of the cycle. Therefore, in the case of FIG. 35A 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.
When the pulsation frequency fmt falls below the above-mentioned dead band frequency or becomes a frequency close to this frequency as shown in FIG. 35 (A), the human body repeatedly receives a strong stimulus while sensing the stimulus every time. feel.

On the other hand, as shown in FIG. 35 (B), 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 (cleaning intensity) to the human body is felt. FIG. 36 is a graph showing the relationship between the pulsation frequency and the washing intensity of the pulsating flow and the discomfort caused by 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 pulsation 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 upper limit is set to 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 water received from the continuous spouting of the washing water tends to fade as the pulsation frequency ftm is lower. Therefore, the pulsation frequency ftm can be intentionally lowered within the above range to give the user a slight intermittent feeling of washing (stimulation).

Also, the pulsation frequency control and the duty ratio control of the coil excitation can be performed as follows. FIG.
FIG. 38 is an explanatory diagram for explaining a control example in which the pulsation frequency in the pulsating flow of the washing water is made different between the tail cleaning and the bidet cleaning. FIG. 38 is an explanatory diagram for explaining a control example of the pulsating frequency ftm and the duty ratio Dtm. is there.

As shown in FIG. 37, the pulsation periods MTA and MTV for the ass washing and the soft / bidet washing are set to be large and small, so that the respective pulsation frequencies ftm can be 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 in 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. 37, as described with reference to FIG. 35, at the time of cleaning the buttocks, a water discharge form similar to FIG. 35 (A) is obtained.
It becomes a washing that receives a sufficient stimulus continuously,
A hard washing feeling can be obtained. Also, soft
During the bidet cleaning, the water is discharged as shown in FIG. 35B, 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 pulsation amplitude can be controlled to increase or decrease. Therefore, the amount of cleaning water and the flow velocity shown in FIG. 27 can be controlled according to the duty ratio Dtm. As a result, 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 adjust 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 ensured 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. 38, 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. 38 (a), 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, and diversification of the cleaning sensation can be achieved.

Further, if the frequency is different, since the continuous intervals of the collision of the water mass are different, the strength of the water obtained by the collision of the water mass can be adjusted by the frequency control. In addition, since this 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 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 may be achieved by loading a random number generation program and determining each time interval according to the generated random number.

As shown in FIG. 38B, 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-described configuration will be described. FIG.
9 is a time chart showing the cleaning operation of the local cleaning device of this embodiment.

As shown in the figure, when the user sits on a toilet seat (not shown) and the seating sensor SS10 (see FIG. 20) is turned on, the main cleaning unit receives this ON signal, and firstly the water inlet side valve unit 50 is turned on. Solenoid valve 55 (see FIG. 15)
Is controlled to open. As a result, the supply of the cleaning water into the apparatus is started, so that 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 to be used for head cleaning.

[0158] Water supply / 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 reaches a predetermined temperature (for example, a temperature that is lower by about 2 to 3 degrees than the hot water temperature during local cleaning). 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 ass 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 electromagnetic valve 55, pre-nozzle cleaning for self-cleaning the nozzle head 200 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, since the cleaning nozzle 24 is at the standby position and the nozzle head 200 is covered with the chamber 41c (see FIG. 21) at the tip of the nozzle holding portion 41b, the nozzle head 200 is cleaned by the rebound water in the chamber 41c. You. Due to 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 200.

For this reason, 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. It should be noted that even during the pre-nozzle cleaning, the wave generation device 74 may be driven to self-clean the nozzle head 200 with pulsating cleaning water. In this case, the pulsation frequency f of the coil
tm may be inside the dead zone or outside the dead zone.

This pre-nozzle cleaning is stopped when a predetermined time has elapsed. That is, as shown in the drawing, first, the upstream 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 the 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 no load, 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 perform normal rotation driving, and the cleaning nozzle 24 is advanced from the standby position to the buttocks cleaning position.
Also during this nozzle advance, the solenoid valve is in the open state, and at this time, the flush water supplied is discarded from a pipe (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 may be supplied to a functional water unit (not shown) that generates functional water (free chlorine water), and the generated functional water may be discharged from the chamber 41c. In this case, 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 washing nozzle (the bidet washing position in the case of a bidet) differ depending on the operated washing button. The same applies to buttons and bidet cleaning buttons.

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 buttons. 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 controlled to be 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 discharge of the pulsating flow of the cleaning water, and the flow shifts to the main cleaning. In this main cleaning, 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 cleaning 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 even though the flow rate of the cleaning water is reduced. There is. Therefore, the local cleaning device 10 of this 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 water pressure change is read from the operation status of the water pressure 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 sensor (not shown), and pulsation flow control (duty ratio control, pulsation frequency control) is performed based on the detected flow rate and the set amount of water pressure change. Therefore, finer water pressure adjustment is possible. In this case, the pressure sensor may be substituted for the 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, and if it is arranged according to the layout of each unit, the product can be made compact. Can be achieved.

The main cleaning is completed as follows by operating the stop button, and thereafter, the nozzle retreat and the 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 cleaning nozzle 24 is retracted and returned to the standby position. When the nozzle is retracted, the solenoid valve 55 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 200 is washed by the bounce 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 200 at the time of retreating the nozzle is washed away by the water flow in the post-nozzle cleaning. 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. 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). After that, the water 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 following procedure is used to complete the discharge of the remaining washing water using the wave generator 74.

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 where 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. Movement of the plunger and movement of the plunger in an empty condition where there is no washing water occur. Since the washing 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 the present embodiment, the same duty ratio Dtm), in the empty condition where there is no washing water, The plunger 74b moves faster. Therefore, when the plunger moves under the condition where the washing water exists in the cylinder 74a to the plunger movement under the condition where the washing water does not exist, that is, when the remaining washing 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. 20) 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. 40 is a circuit diagram showing an example of the bottom detection circuit 81 for the pulsation generating coil 74c.
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. 40, 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 the 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 moving, 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 the completion of the residual water discharge, stops the subsequent pulse output, and ends a series of the butt cleaning operation. In addition, in addition to completing the residual water discharge based on such a bottom detection result,
The pulse output may be stopped at a point in time when a predetermined time has elapsed since the coil excitation for discharging the residual water, and the coil excitation may be stopped to terminate the cleaning operation.

In the local cleaning apparatus 10 of this embodiment, move cleaning can be 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 can be increased near the center position to increase the softness and continuity, and the pulsation frequency ftm can be reduced near the forward end and the backward end to emphasize the 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 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) 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. 38B, 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 it is good.

In this massage cycle, 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, the user can clearly perceive the transition of the washing feeling and the stimulating feeling accompanying the duty ratio Dtm and the pulsation frequency ftm as described above. Therefore,
The user can regularly and repeatedly give the user the feeling of washing and irritation from the spout, and the regular repetition can 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.

In the massage washing described above,
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 the present embodiment, the fluctuation cleaning which gives a sense of comfort and comfort by irregularly changing the cleaning feeling and the stimulating feeling received from the water discharge 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 random numbers, 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, such 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 transition of 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 of 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.

When this fluctuation cleaning is performed for local cleaning after defecation, the duty ratio Dtm and pulsation frequency ft
Because it is difficult to predict the strength stimulus accompanying 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.

Also, the power spectrum of the physical quantity such as the fluctuation width or the instantaneous flow rate that 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 this 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. 42 is an explanatory diagram for describing an effect obtained by the accumulator 73.

By driving the wave generation device 74 to discharge the above-described pulsating flow of washing water, the pressure (primary pressure) of the upstream water supply pipe 51 (see FIG. 15) and the downstream side of the wave generation device 74 The pressure (secondary pressure) of the downstream water supply line 72 was measured. Then, the primary pressure without the accumulator 73 provided upstream of the wave generation device 74 was measured downstream of the flow regulating valve 65. In addition, the primary pressure when the accumulator 73 was provided as shown in FIG. 15 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 incorporated 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. 42, 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 the wave generating device 74 or integrally therewith, the accumulator 73 can be arranged close to the flow regulating valve 65 or integrally therewith.

Further, in the local cleaning apparatus 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 is less likely to occur. For this reason, it is not necessary to make the water channel system components including the wave generation device 74 high in water hammer resistance, and the configuration and structure can be simplified, the size can be reduced, and the resin can be formed.

The pulsation generated by the reciprocating motion of the plunger 74b does not exhibit the zero flow rate as described above in the wave generation device 74. 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.

Further, since the flushing water with a zero flow rate does not occur when the pulsating flushing water is discharged, 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 generating device 74, the adjustment range of the pulsation frequency can be extended to near the lower limit of the dead zone region, and the pulsation frequency adjustment over a wide range can diversify the washing feeling and the water force. Can be.

Further, in the local cleaning apparatus 10 of this embodiment, at the end of the cleaning operation in the buttocks cleaning, the soft cleaning, and the bidet cleaning, the wave generation device 74 is driven to reciprocate the plunger 74b as described above. The remaining washing water was forcibly discharged. Therefore, the drainage of the pipe from the flow control valve 65 to the nozzle head 200 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, the duty ratio Dtm of the pulsation generation coil 74c
And the pulsation frequency ftm is set to a low frequency, the plunger 74b is moved only at a constant speed and with a small force, and the plunger 74b does not collide with the end of the cylinder 74a with a high speed and a strong force. Therefore, the striking sound of the plunger 74b can be reduced. Further, as described above, the flow path switching valve 7
By opening all the communication holes of the respective nozzle flow paths at the time of draining water, water can be drained from all the flow paths in the cleaning nozzle 24.

In addition, in the local cleaning apparatus 10 of this embodiment, as described above, the user is provided with a feeling that the user is receiving continuous water discharge while reducing the amount of wash water (water discharge amount). 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, air is forcibly mixed into the cleaning water to reduce the amount of the 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 electric 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 device 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 washing water and the power consumption. Therefore, 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 is generated due to a failure of the solenoid valve 55, or when an abnormality such as water outage occurs, the detection signal from the flow rate sensor is received, the drive of the wave generation device 74 is stopped, and the heater 6 is turned off.
Operations such as stopping the 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.

Further, in the sixth embodiment, when the soft bidet is washed, the washing water in the pulsating flow is guided to the washing water vortex chamber 171 as described above, and a swirling force is applied to the washing water.
Therefore, in the cleaning of the soft and bidet, the above-mentioned effects obtained by the pulsating flow of the cleaning water spouting, the air mixing, and the swirling of the cleaning water can be obtained. Further, since the flow velocity periodically changes in the pulsating flow, the turning force also changes periodically. Accordingly, the extent of the spiral changes periodically within the cone-shaped KS range shown in FIG. 2 or FIG. Therefore, the washing water can be appropriately dispersed in the cone-shaped KS, and the local portion can be washed evenly.

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, and the same member names will be used for members performing the same function.

In the pulsating flow of flush water described above, the flow rate can be variably controlled while keeping the flow rate constant. FIG. 43 shows an example in which the flow velocity vm is decelerated (vm2 → vm3) while the flow rate is kept constant in the pulsating water discharge. In the figure, t2, 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 74 of the pulsation generator.
It represents the voltage applied to the switching transformer for turning ON / OFF the current supply to the switch c, in other words, the coil excitation voltage. 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)
Represents the relationship between the flow velocity vm and the time of the flush water discharged. With reference to FIG. 43, a description will be given of a control for increasing the flow velocity while keeping the flow rate constant in the pulsating water discharge.

When the pulsation generator comprises a pulsation generating coil 74c and a plunger 74b driven by this coil,
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. First, assuming that the speed should be reduced, the voltage V applied to the pulsation generating coil 74c (ie, the current flowing to the pulsation generating coil 74c)
(V3 → V2; see (b)). As a result, the suction force of the plunger 74b decreases, and the flow velocity decreases. At this time, if the duty ratio is the same before and after the voltage change, the stroke length of the plunger 74b is reduced by the reduction in the driving speed of the plunger 74b, and the flow rate is reduced. Therefore, when it is sufficient to reduce the flow rate even if the flow rate is reduced, it is only necessary to reduce the voltage at a constant duty ratio as described above. The reverse is true for increasing the flow velocity.

On the other hand, to accelerate or decelerate only the flow velocity without changing the flow rate, the following control is performed. In the case of the deceleration control, the duty ratio is increased (t2 / T2 → t) in order to shorten the stroke length, that is, compensate for the insufficient flow rate.
3 / T2; (a)). When the duty ratio is increased in this manner, the coil excitation period becomes longer, so that 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, when the pulsation is constantly generated at the stroke limit of the plunger 74b, the flow rate does not change because the drive stroke length does not change, and the pulsation generation coil 7 does not change.
4c only by controlling the applied voltage or current
Control with constant flow rate and variable flow rate becomes possible.

Next, the local cleaning device 10 of the above embodiment is described.
Another modification of will be described.

FIG. 44 is a block diagram showing a channel system configuration of a local cleaning apparatus 100 according to a modification, FIG. 45 is a block diagram showing a channel system configuration of a local cleaning apparatus 110 according to another modification, 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 view. FIG.
FIG. 13 is a block diagram illustrating a water channel configuration of a local cleaning apparatus 120 according to another modification. FIG. 48 is a cross-sectional view showing a configuration of a flow control switching valve 77 disposed in this waterway system.
FIG. 9 is an explanatory diagram for explaining the water pressure in the water channel system of the local cleaning device of the modified example having the intermittent valve. FIG. 50 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. 44, in the local cleaning apparatus 100 of this modification, a wave generating unit 70 having an accumulator 73 and a wave generating 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 one of the nozzle flow paths of the cleaning nozzle 24 (the nozzle flow paths for ass cleaning, soft cleaning, and bidet cleaning). 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 a reduction in the number of assembly steps and a reduction in cost due to the reduction in the number of parts. In addition, in the ordinary ass cleaning, the above-mentioned effects obtained by pulsating flow of washing water and air entrainment are used. The above effects obtained by the water swirl can be obtained.

In the local cleaning apparatus 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 path 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 hardly occur, and the influence of pulsation damping due to the 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. 45 is provided with 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 cleaning nozzle 114 and the bidet cleaning nozzle 116 having the nozzle heads 170 and 170A described in FIG. 2 and FIG. (Washing nozzle flow path and bidet cleaning nozzle flow path) The supply destination of the cleaning water is switched, and the flow rate of the cleaning water flowing through each of the switched flow paths is adjusted.

Washing 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 each of the cleaning nozzles from the standby position to the respective cleaning position, 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 improving 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 made of a flexible pipe having a higher hardness than the upstream water supply pipe 51, so that it is separately used for the buttocks and the bidet. 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. In addition, in the usual ass washing and bidet washing, the above-mentioned effects obtained by pulsating flow of washing water discharge, air mixing, and swirling of washing water can be obtained. Note that the buttocks cleaning nozzle 114 may not have the cleaning water vortex chamber 171.

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.

[0211] Further, 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 have Further, a cleaning nozzle for soft cleaning may be provided separately from the above-mentioned two cleaning nozzles. This makes it possible to achieve the above-described effects obtained by pulsating flow of cleaning water spouting, mixing of air, and swirling of cleaning water during soft cleaning.

(3) The local cleaning device 120 of the modified example shown in FIG. 47 is characterized in that the cleaning water is discharged in an intermittent flow. That is, it is characterized in that the flow of the cleaning water is changed to an intermittent flow in which the flow rate instantaneously becomes zero by pressurizing the supplied cleaning water and interrupting the cleaning 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 cleaning 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. The intermittent valve 128, as shown in FIG.
The motor 128a connects the valve body 128b to the housing 12
8c. Then, the intermittent valve 128
, The internal valve body flow path 128d is communicated 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).
The intermittent flow of 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. 49, 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^Two The pressure is reduced to｝
To the pressurizing device 122, and the pressurizing device 122
2MPa about 2kgf / cm ^Two It 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.
More diversification of washing feeling and detailed
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, the following advantages are obtained in addition to the above-mentioned effects obtained by the flush water discharge, the air mixing, and the swirl flow in the intermittent flow instead of the pulsating flow. As shown in FIG. 48, the intermittent valve 128 has an inclined portion 128f at the opening of the valve body flow path 128d. The inclined portion 128f 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. 49, 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. 18), and the flow rate can be adjusted.

(4) In the local cleaning apparatus 130 of another modified example shown in FIG. 50, the cleaning water is pressurized by the pressurizing device 122 and the intermittent flow generating unit 126 to be the intermittent cleaning water. Also, cleaning nozzles 114 and 116 for buttocks and bidets
Is moved forward and backward by the nozzle device 112, and the flow control switching valve 75 switches the flow path to the nozzle and adjusts the flow rate. Then, after the flow rate is adjusted, the above-mentioned intermittent flow of washing water is spouted from each of the buttocks and bidet washing nozzles. As described above, 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.

[0219] In addition, the local cleaning device 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 generation 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) Further, 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) A pressurizing device 122 having a pressurizing pump composed of a line pump and an intermittent valve 128 are used for pressurizing the washing water and thereafter forming the intermittent flow, and these two are configured separately. . However, the configuration is not limited to this, and the cleaning water may be pressurized and intermittent. FIG. 51 is an explanatory view illustrating a cleaning nozzle 175 of still another modified example, 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, this solenoid pump 1
76 is a suction-side check valve 176a and a discharge-side check valve 176b.
This 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 intermittent pressurized water from the pump chamber 176e. An ordinary solenoid pump uses an accumulator in order to eliminate fluid intermittent due to plunger advance / retreat sandwiched between check valves on the suction side and the discharge side 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 section and the intermittent section can be realized by one solenoid pump 176, the configuration can be simplified. Even in this case, the 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) Further, 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. 9, 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 way, even if the pressure of the water supply source itself such as a water supply is originally low, water can be spouted with the intermittent flush water as described above.

(5) Further, in the above-described embodiment and its modified example, 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 of water is provided on the remote control device, the sleeve of the main body, or the like. It is also possible to select the same type of water discharge as the conventional one by using the local cleaning in the above 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 section 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 installed inside the heat exchange unit.

(7) Instead of using an incoming water temperature sensor to detect the incoming water temperature to the heat exchange unit 60, based on the amount of supplied electricity to the heater 61, for example, the amount of supplied electricity to the heater 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.

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. In this case, the width direction of the cleaning nozzle can be narrowed, various devices and units including the nozzle device can be arranged in close proximity, 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 embodiment of the present invention has been described above.
The present invention is not limited to the above-described Examples and Embodiments, 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 by 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 is not required outside, and an overheat prevention device such as a bimetal is not required. 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. Further, although the nozzle is electrically driven, if a hydraulic nozzle is used, the motor for driving the nozzle can be eliminated and the cost can be relatively reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a schematic configuration of a local cleaning apparatus 300 according to a first embodiment.

FIG. 2 is a schematic perspective view schematically illustrating an internal structure of the local cleaning apparatus 300, for explaining a nozzle head 170 of a cleaning nozzle included in the local cleaning apparatus 300.

FIG. 3 is a schematic perspective view schematically illustrating the internal structure of a nozzle head 170A according to a second embodiment of the present invention.

FIG. 4 is a schematic diagram schematically showing a comparative example nozzle head 161 to be compared with a nozzle head 170A.

FIG. 5 is a graph showing air entrainment characteristics of a nozzle head 170A and a comparative example nozzle head 161.

FIG. 6 is an explanatory diagram schematically showing a state of spouting of cleaning water from the nozzle head 170A.

FIG. 7 is a block diagram illustrating a schematic configuration of a local cleaning apparatus 300A according to a third embodiment.

FIG. 8 is a block diagram illustrating a schematic configuration of a local cleaning apparatus 320 according to a fourth embodiment.

FIG. 9 is a schematic cross-sectional view of a main part for describing a schematic configuration of a nozzle head 200.

FIG. 10 is a schematic perspective view of the nozzle head 200 in the X direction.

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

FIG. 12 is a schematic exploded perspective view of a main part of a nozzle head 200 and a cleaning nozzle 24.

13 is a schematic exploded perspective view of a main part of the nozzle head 200 and the cleaning nozzle 24 viewed from a direction different from FIG.

FIG. 14 is a schematic perspective view schematically illustrating the internal structure of a nozzle head 220 according to a fifth embodiment of the present invention.

FIG. 15 is a block diagram showing a schematic configuration of a local cleaning apparatus according to a sixth embodiment, focusing on a waterway system.

FIG. 16 is an accumulator 7 provided in the waterway system.
FIG. 3 is a sectional view showing a schematic configuration of No. 3;

FIG. 17 shows a wave generator 7 also arranged in a waterway system.
4 is a cross-sectional view illustrating a configuration of FIG.

FIG. 18 is an explanatory diagram illustrating a state of a flow of cleaning water by the wave generation device 74.

FIG. 19 is a schematic diagram schematically showing a state of installation of the wave generation device 74.

FIG. 20 is a block diagram illustrating a schematic configuration of a control system.

FIG. 21 is a schematic perspective view showing a nozzle device 40.

FIG. 22 is a schematic sectional view taken along line 22-22 in FIG. 21;

FIG. 23 is an explanatory diagram for explaining how the cleaning nozzle moves forward and backward.

FIG. 24 is a flow path switching valve 7 of the cleaning nozzle 24;
1 is a schematic cross-sectional view of a main part for describing a configuration of FIG.

FIG. 25 is an exploded perspective view of a main part of the flow path switching valve 71.

FIG. 26 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. 27 is a timing chart showing a flow rate and a flow rate of cleaning water flowing out of the wave generation device 74.

FIG. 28 is an explanatory diagram schematically illustrating a state of flush water spouting from a tail spout hole 31 of the nozzle head 200.

FIG. 29 is an explanatory diagram illustrating a process in which, when the pulsating flow of cleaning water is discharged from the assumed water discharge hole 30, the discharged cleaning water is amplified into a pulsating flow.

FIG. 30 is an explanatory diagram illustrating a state in which the cleaning water stream collides with a wall surface.

FIG. 31 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. 32 is an explanatory diagram three-dimensionally expressing the position on the pressure sensor plate Ps and the peak value of the pressure.

FIG. 33 is a timing chart showing a detection signal detected from one of the detection units.

FIG. 34 is a graph showing a relationship between an average water discharge amount and a cleaning amount.

FIG. 35 is an explanatory diagram for explaining the reason why the cleaning intensity varies depending on the increase or decrease of the frequency.

FIG. 36 is a graph showing a relationship between a pulsation frequency and a washing intensity of a pulsating flow and discomfort due to stimulation of a human body local part.

FIG. 37 is an explanatory diagram for explaining a control example in which the pulsation frequency in the pulsating flow of the washing water is made different between the hip cleaning and the bidet cleaning.

FIG. 38 is an explanatory diagram illustrating a control example of a pulsation frequency ftm and a duty ratio Dtm.

FIG. 39 is a time chart illustrating a cleaning operation of the local cleaning device of this embodiment.

FIG. 40 is a circuit diagram illustrating an example of a bottom detection circuit 81 for the pulsation generation coil 74c.

FIG. 41 is an explanatory diagram for describing a state of a current waveform at the time of energization excitation of the pulsation generating coil 74c.

FIG. 42 is an explanatory diagram for describing an effect obtained by the accumulator 73.

FIG. 43 shows an example in which the flow velocity vm is decelerated (vm2 → vm3) while the flow rate is kept constant in the pulsating water discharge.

FIG. 44 is a block diagram illustrating a water channel configuration of a local cleaning apparatus 100 according to a modification.

FIG. 45 is a block diagram illustrating a water channel configuration of a local cleaning apparatus 110 according to another modification.

FIG. 46 is a schematic configuration diagram showing a schematic configuration of a flow control switching valve 75 of these modified examples, partially cut away.

FIG. 47 is a block diagram showing a water channel configuration of a local cleaning apparatus 120 according to another modification.

FIG. 48 is a cross-sectional view illustrating a configuration of an intermittent valve 128 arranged in the waterway system.

FIG. 49 is an explanatory diagram illustrating water pressure in a water channel system of a local cleaning device according to a modified example having the intermittent valve.

FIG. 50 is a block diagram illustrating a water channel configuration of a local cleaning apparatus 130 according to another modification.

FIG. 51 is an explanatory diagram illustrating a cleaning nozzle 175 of still another modified example.

FIG. 52 is an explanatory diagram illustrating a schematic configuration of a solenoid pump 176 used in a cleaning nozzle 175 of this modified example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Local washing | cleaning apparatus, 24 ... Cleaning nozzle, 24a ... Cylindrical part, 24b ... Belt holding body, 24c ... Track holding body, 24
d: gripping part, 30: water discharge hole, 31: butt water discharge hole (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, 34a connection pipe section, 40 nozzle apparatus, 41
... Base, 41a ... Stand, 41b ... Nozzle holding part, 41
c: chamber, 42: nozzle drive motor, 43: transmission mechanism, 43a: drive pulley, 43b: driven pulley, 43c
... timing belt, 43d ... tension roller, 44
... Guide rail part, 45 ... Nozzle advance / retreat track, 50 ... Inlet 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 pipe, 60 ... Heat exchange unit, 61 ... Heater, 62 ... Heat exchange section, 63 ...
Vacuum breaker, 65: Flow regulating valve, 70: Wave generation unit, 71: Flow path switching valve, 71a: Casing, 71
b ... 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 ...
Plunger, 74c: electromagnetic coil (pulsation generating coil),
74d: buffer spring, 74e: return spring, 7
4f Check valve, 75 Flow control switching valve, 75a Drum casing, 75b Drum, 75c Water supply groove, 77 Flow control switching valve, 79 Drying section, 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, buttocks cleaning nozzle, 116 Bidet cleaning nozzle, 120: local cleaning device, 122: pressurizing device, 124: flow regulating valve, 126: intermittent flow generating unit, 128: intermittent valve, 128a: motor,
128b: valve body, 128c: housing, 128d
... Valve body passage, 128e ... Valve passage, 128f ... Incline, 130 ... Local cleaning device, 161 ... Comparative example nozzle head, 162 ... Outside air entrainment chamber, 163 ... Small diameter communication passage,
163A: orifice, 164: outside air introduction passage, 170
... nozzle head, 170A ... nozzle head, 171 ... wash water vortex chamber, 175 ... wash nozzle, 176 ... solenoid pump, 176a ... suction side check valve, 176b ... discharge side check valve, 176c ... electromagnetic solenoid, 176d ... plunger 176e: pump chamber, 200: nozzle head, 20
2 top lid, 204 air gap chamber, 206 washing water vortex chamber, 206a connection port, 207 orifice, 208
... bidet washing water vortex chamber, 208a ... connection port, 210 ... bottom cover, 212 ... outside air introduction passage, 213 ... standing plate, 220 ...
Nozzle head, 222: eccentric path, 223: axis directing path, 240: seal, 241: groove, 242: ridge, 2
43: Seal tubular body, 300: Local cleaning device, 300A
... local cleaning device, 302 ... water supply unit, 304 ... heat exchange unit, 306 ... flow control valve, 307 ... flow path switching valve, 3
08: Cleaning nozzle, 308A: Cleaning nozzle, 308B:
Cleaning nozzle, 310: nozzle drive motor, 312: electronic control unit, 320: fourth local cleaning device, S1: orifice diameter, S2: throat diameter, SS16a: incoming water temperature sensor, SS16b: outgoing water temperature sensor, SS18: float switch , SS30: Fall detection sensor, SS14: Cleaning water amount sensor, HP: Standby position, AWP: Buttocks cleaning position, V
WP: bidet cleaning position, Ps: pressure sensor plate, SS10 ...
Seating sensor, SS113 ... water temperature sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Haruo Tsutsui 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Totoki Equipment Co., Ltd. 2-Chome 1-1 F-term in Totoki Kiki Co., Ltd. (Reference) 2D038 JA05

Claims (1)

[Claims] 1. A human body cleaning apparatus for discharging cleaning water from a water discharge hole of a nozzle to a human body, comprising: a water supply unit configured to supply cleaning water to the water discharge hole; To give the swirling force and guide the washing water to the water discharge hole,
A swirling means for spouting the washing water from the spout hole with the swirling force, the swirling applying means causing a periodic fluctuation in the flow of the water wash water from the water supply means, And a fluctuation generating means for varying the degree of the swirling force applied to the feed water cleaning water, wherein the fluctuation generating means reciprocates in the cylinder and forms a part of the water supply path. A plunger for pulsating the flow of the wash water to pump the wash water downstream of the cylinder;
A human body cleaning device, comprising: an electromagnetic solenoid for reciprocatingly driving the plunger; control means for exciting and controlling the electromagnetic solenoid; and a check valve provided in the cylinder and allowing the flow of cleaning water downstream.