JP2010222856A - Human body washing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a human body washing device capable of washing a human body with high comfortability by reduced amount of water. <P>SOLUTION: This human body washing device is provided with a water supply pipe, a pressure fluctuating part connected with the water supply pipe, a control part for controlling the pressure fluctuating part, and a water discharge hole provided on the downstream side of the pressure fluctuating part to discharge washing water on the human body. The control part controls water discharge to cause a change of pulsation of pressure in the pressure fluctuating part and let the washing water of pulsation flow having sections having different flow speeds appear from the water discharge hole due to the change of pulsation repeatedly and joins the sections having different flow speeds after the discharge to form water masses intermittently. The control part controls the pressure fluctuating part to make sizes of the water masses formed continuously different from each other. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a human body cleaning apparatus that discharges cleaning water from a water discharge hole to a human body.

  In this type of conventional human body cleaning apparatus, development of an apparatus capable of obtaining a high cleaning power even when the flow rate is reduced by intermittently generating a high pressure in the heightened awareness of energy saving. For example, in Patent Document 1, the channel volume variable means increases or decreases the volume in the channel of the wash water supplied from the water supply pipe at high speed and periodically, and the backflow prevention means further upstream of the channel volume variable means. Due to the structure that prevents the reverse flow of water, when the water channel volume variable means increases the water channel volume, the wash water supplied from the water supply pipe is drawn into the increased water channel, and the water channel volume decreases at a stretch. In this case, the backflow prevention means prevents the backflow of water upstream, and the washing water stored in the water channel is pushed out to the discharge means side at once, so that the water supply pressure supplied from the water supply pipe is greatly increased. It is described that a very high pressure washing water can be realized.

  However, in the human body washing apparatus as described in Patent Document 1, a jet having excellent detergency and physical strength can be obtained with a small amount of washing water. There is a problem that it is impossible to increase the sense of volume, which is a sensation of being washed.

  Further, Patent Document 2 includes pressure generating means for causing a pulsation transition such that a pressure higher than the water discharge pressure obtained from the water supply source is intermittently generated. It is described that water is discharged so that the washing water of the pulsating flow that it has repeatedly appears, and a portion with a different speed after water discharge causes a large water mass to land on the human body.

  This is because a part with a high speed catches up with a part with a slow flow rate before it, and a large water mass is landed on the human body. The amount of water itself can be reduced, and the washing feeling and washing strength can be increased. On the other hand, more diverse cleaning is required. In particular, there is a demand for washing with a feeling of volume as if washing with a large amount of water and washing with sufficient washing strength.

Japanese Unexamined Patent Publication No. 2003-119865 (FIG. 1) Japanese Patent No. 3264274 (page 20, FIG. 5)

  The present invention has been made in order to solve the above problems, and the object of the present invention is to provide a feeling of washing with a large amount of water that is washed with a large amount of water with a limited amount of water, and strength. It is to provide a highly comfortable human body washing apparatus by realizing a certain washing at the same time.

  According to one aspect of the present invention, a water supply pipe, a pressure fluctuation unit connected to the water supply pipe, a control unit that controls the pressure fluctuation part, and a human body provided downstream of the pressure fluctuation part are washed. A body cleaning device comprising a water discharge hole for discharging water, wherein the control unit generates a pulsation transition of pressure in the pressure fluctuation unit, and a portion having a different speed from the water discharge hole due to the pulsation transition. There is provided a human body washing apparatus characterized in that the water discharge is controlled so that the pulsating flow that it has repeatedly appears, and the portions having different speeds are merged after water discharge to continuously form water bodies of different sizes.

  According to the present invention, a highly comfortable human body is realized by realizing both a feeling of washing with a large amount of water with a limited amount of water and a strong washing feeling. A cleaning device can be provided.

It is a waterway figure of the human body washing | cleaning apparatus in this invention. 1 is a schematic cross-sectional view of a pulsation generator according to a first embodiment of the present invention. It is explanatory drawing explaining the mode of the pressure fluctuation of the washing water which concerns on the 1st Embodiment of this invention. It is sectional drawing of the washing nozzle in this invention. It is explanatory drawing explaining the mode of excitation of the pulsation generating coil of the pulsation generating apparatus which concerns on the 1st Embodiment of this invention. It is a timing chart which shows the flow rate of the wash water which flows out from the pulsation generating apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the process in which the wash water discharged from the water discharge hole of the present invention is amplified by the pulsating flow. It is a timing chart which shows change of load when washing water which flows out from a pulsation generating device concerning a 1st embodiment of the present invention lands on a human body. It is explanatory drawing explaining the relationship between the flow rate of the washing water which flows out from the pulsation generating apparatus which concerns on the 1st Embodiment of this invention, and the follow-up curve of washing water. It is explanatory drawing explaining an example of the relationship between the washing | cleaning feeling of washing | cleaning in this invention, and a physical quantity. It is explanatory drawing explaining an example of the water mass produced | generated in this invention. It is explanatory drawing explaining the example of the combination of the different water mass produced | generated in this invention. It is explanatory drawing explaining the mode of excitation of the pulsation generating coil of the pulsation generating apparatus which concerns on the 2nd Embodiment of this invention. It is a timing chart which shows the pressure of the wash water which flows out from the pulsation generating apparatus concerning a 2nd embodiment of the present invention. It is a timing chart which shows the flow velocity of the wash water which flows out from the pulsation generating apparatus concerning the 2nd embodiment of the present invention. It is explanatory drawing explaining the modification of the mode of the excitation of the pulsation generating coil of the pulsation generating apparatus which concerns on the 2nd Embodiment of this invention. It is a timing chart which shows the electric current when exciting the pulsation generating coil of the pulsation generating apparatus which concerns on the 2nd Embodiment of this invention as usual. It is a timing chart which shows an electric current when exciting the pulsation generating coil of the pulsation generating apparatus which concerns on the 2nd Embodiment of this invention. It is a timing chart which shows the mode of excitation of the pulsation generating coil of the pulsation generating apparatus which concerns on the 3rd Embodiment of this invention. It is a timing chart which shows the flow rate of the wash water which flows out from the pulsation generating apparatus which concerns on the 3rd Embodiment of this invention. It is a schematic structure sectional view of the pulsation generating device concerning a 4th embodiment of the present invention. It is a timing chart which shows operation | movement of the pulsation generation apparatus which concerns on the 4th Embodiment of this invention. It is a timing chart which shows the pressure of the wash water which flows out from the pulsation generating apparatus concerning a 4th embodiment of the present invention. It is a timing chart which shows the flow rate of the wash water which flows out from the pulsation generating apparatus which concerns on the 4th Embodiment of this invention.

40 water discharge hole 50 water supply means,
60 Instantaneous heat exchanger (heating means)
67 Water supply line 70 Pulsating unit 74 Pulsation generating device 74b Cylinder 73c Plunger 74d Pulsation generating coil 74e Buffer spring 74f Return spring 74g Check valve 74k Second coil 74m Check valve 75 Water supply line 81 Flow rate adjustment and flow path switching valve 82 Cleaning nozzle 90 Pressure fluctuation device 91 First pressure fluctuation part 92 Second pressure fluctuation part 910b, 920b Piston 910d, 920d Cylinder 910f, 920f Check valve 910h, 920h Check valve 911 Motor 912 Gear 913 Gear 914, 924 Crank shaft

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the waterway diagram of the human body washing apparatus according to the present embodiment is shown in FIG. FIG. 1 is a schematic configuration diagram showing a cleaning water supply system.

  As shown in FIG. 1, the water channel system of the human body cleaning device includes a water inlet side valve unit 50, a heat exchange unit 60, a pulsation unit 70, and water supplied from a supply source (not shown) outside the casing of the human body cleaning device. Is provided. Then, the cleaning water having the pulsation imparted by the pulsation generating unit 70 is guided from the pulsation generating unit 70 to the cleaning nozzle 82 through the flow rate adjustment flow path switching valve 81 of the cleaning nozzle unit 80, and the water discharged from the nozzle 82 is discharged. Is done. Each of these units is housed in a casing of a human body cleaning device. The controller 10 includes an electromagnetic valve 53, an incoming water temperature sensor 62a, a heater 61, an outgoing water temperature sensor 62b, a float switch 63, a pulsation generating device 74, a flow rate adjusting / flow path switching valve 81, a washing nozzle 82, and a control button (not shown). Connected). The control button has a strong sensation of hard washing, soft washing (hereinafter referred to as soft washing) and bidet washing (hereinafter referred to as bidet washing). A water change button for changing the temperature, a temperature adjustment button for selecting the temperature of the washing water, and a stop button for stopping the washing are included.

  Each of these units is connected by a water supply pipe with a pulsation generating unit interposed therebetween. That is, the water inlet side valve unit 50 and the heat exchange unit 60 are connected by a water supply line 55, and the flow rate adjustment / flow path switching valve 81 downstream of the pulsation generating unit is connected by a water supply line 75.

  The water supply line 55 is piped to the water inlet side valve unit 50 so as to directly supply cleaning water (tap water) from a water supply source (water pipe). The washing water guided to the water supply pipe 55 is captured by the strainer 51 of the water inlet side valve unit 50 and flows into the check valve 52. When the pipe is opened by the electromagnetic valve 53, the washing water flows into the pressure regulating valve 54 and is adjusted to a predetermined pressure (water supply pressure: 0.110 MPa), and the heat exchange unit 60 of the instantaneous heating method is used. Flow into. In this way, the flow rate of the cleaning water flowing in under pressure regulation is set to about 200 to 600 cc / min. Note that the water supply line 55 may be branched from a washing water tank (not shown) for storing flush water for toilet flushing and piped to the incoming water side valve unit 50.

  The heat exchanging unit 60 downstream of the water inlet side valve unit 50 includes a heat exchanging unit 62 in which a heater 61 is built. This heat exchanging unit 60 has the temperature of the washing water flowing into the heat exchanging unit 62, the temperature of the washing water flowing out of the heat exchanging unit 62, and the temperature of the washing water flowing out of the heat exchanging unit 62 as an incoming water temperature sensor 62a and an outgoing water temperature sensor. While detecting at 62b, based on the detected temperature, the heating operation of the heater 61 is controlled so as to overheat the cleaning water at the set temperature of the cleaning water. In this way, the warmed washing water flows into a pulsation generating unit 70 which will be described later, is added with pulsation, and flows into the flow rate adjustment / flow path switching valve 81. The pulsation is a pressure fluctuation caused by the pulsation generating unit, and devices that cause the pressure fluctuation are called a pulsation generating unit. Therefore, a pulsation generator is synonymous with a pressure fluctuation part.

  The heat exchange unit 60 also has a float switch 63 that detects the water level in the heat exchange unit 62. The float switch 63 is configured to output a signal to that effect when the heater 61 reaches or exceeds a predetermined water level where the heater 61 is submerged. And since the control part 10 energizes the heater 61 in the condition which has input this signal, the situation where the heater 61 which is not submerged is energized, that is, the so-called empty heating of the heater 61 is prevented. The heater 61 of the heat exchange unit 60 is optimally controlled by the controller 10 while combining feedforward control and feedback control.

  Further, the heat exchange unit 60 includes a vacuum breaker 64 and a safety valve 65 at the washing water outlet from the heat exchange section 62, that is, at the heat exchange section connection location of the pipe line downstream of the heat exchange section 62. The vacuum breaker 64 introduces the atmosphere into the pipe line having a negative pressure, cuts off the washing water in the pipe line downstream of the heat exchange unit, and prevents the back flow of the washing water from the downstream side of the heat exchange unit. The safety valve 65 opens when the water pressure in the water supply pipe 67 exceeds a predetermined value, and discharges washing water to the drainage pipe 66 to prevent malfunctions such as equipment breakage and disconnection of the hose at the time of abnormality. ing.

  Next, the structure of the pulsation generating unit 70 will be described. The pulsation generating unit 70 includes an accumulator 73 and a pulsation generating device 74. FIG. 2 is a schematic sectional view of the pulsation generating device 74. The pulsation generating device here is a pressure fluctuation part that causes pressure fluctuation. As shown in FIG. 2, a plunger 74 c is slidably provided in a cylinder 74 b connected to the water supply pipes 67 and 75. The plunger 74c is advanced and retracted upstream and downstream by controlling the excitation of the pulsation generating coil 74d. The plunger 74c moves from the illustrated original position (plunger original position) to the downstream side 74h by excitation of the pulsation generating coil 74d. When the excitation of the coil disappears, it returns to the original position by the urging force of the return spring 74f. At this time, the return operation of the plunger 74c is buffered by the buffer spring 74e. The plunger 74c is provided with a duckbill check valve 74g therein to prevent backflow upstream. Therefore, when the plunger moves from the original position to the downstream side, the cleaning water in the cylinder 74 b is pressurized and can be pushed to the water supply pipe 75. At this time, since the plunger original position and the position moved downstream are always constant, the amount of cleaning water sent to the water supply pipe 75 when the plunger operates is constant. Thereafter, when returning to the original position, the washing water flows into the cylinder 74b through the check valve 74g, so that a certain amount of washing water is sent to the water supply pipe 75 again by the next downstream movement of the plunger 74c. It will be.

  In this case, the pulsation generating device 74 is supplied with the cleaning water having the above-mentioned water supply pressure through the water supply pipe 55. Therefore, as described above, the wash water flowing into the cylinder 74b through the check valve 74g during the return to the original position of the plunger is affected by pressure loss due to the check valve 74g and drawing of wash water downstream. Although the pressure is not maintained, it is sent to the water supply line 75. When this state is represented by a diagram, as shown in FIG. 3, the wash water is supplied from the pulsation generating device 74 to the water supply line 75 with a pressure pulsated with reference to the introduction water pressure Pin (feed water pressure) to the pulsation generating device 74. As a result, it is sent to the washing nozzle unit 80 and discharged locally. Note that the pressure waveform shown in FIG. 3 is a result of measurement in the immediate vicinity of the water discharge hole 40, and the pressure in the cleaning vortex chamber 301 or 302 immediately before the orifice 401 or 402 was measured with a highly responsive pressure gauge at a high sampling period. It is a result.

  Next, the accumulator 73 will be described (not shown). The accumulator 73 has a damper chamber in the housing 73 housing and a damper disposed in the damper chamber. Therefore, the accumulator 73 reduces water hammer applied to the water supply pipe 67 on the upstream side of the pulsation generating unit 70. For this reason, the influence of the water hammer which has on the washing water temperature distribution of the heat exchange part 62 can be relieved, and the temperature of washing water can be stabilized. In this case, the accumulator 73 is arranged close to or integrally with the pulsation generating device 74 to quickly and effectively avoid the propagation of the pulsation generated by the pulsation generating device 74 upstream. From the viewpoint of being able to.

  Next, the cleaning nozzle unit 80 will be described. The cleaning nozzle unit 80 is provided with a flow rate adjustment / flow path switching valve 81, and is connected to the cleaning nozzle 82 through a water supply line 86. Then, the supply destination of the cleaning water of the pulsating flow sent from the pulsation generating unit 70 is switched to each flow path 83, 84, 85 of the cleaning nozzle 82 and the flow path is adjusted.

  Next, the cleaning nozzle 82 will be described. 4A and 4B are structural diagrams of the cleaning nozzle. The plurality of cleaning channels 83, 84, and 85 in the cleaning nozzle 82 communicate with a butt cleaning water discharge hole 401 and a bidet cleaning water discharge hole 402 that discharge cleaning water toward the butt near the tip of the cleaning nozzle, respectively. Washing water swirl chambers 301 and 302 are provided upstream of the water discharge holes 401 and 402 to discharge water from the water discharge holes as a swirling flow while swirling the cleaning water flowing through the cleaning flow paths 83 and 85. The cleaning channel 84 communicates with the lower part of the cleaning vortex chamber 301 and communicates with the water discharge hole 401. Moreover, the diameter of the water discharge holes 401 and 402 is in the range of about φ0.5 to φ1.8, and the optimum diameter is selected according to the flow rate. For example, when the flow rate is 430 ml / min, the diameter of the buttocks cleaning water discharge hole 401 is set to about φ0.9, and the diameter of the bidet cleaning water discharging hole 402 is set to about φ1.4.

  Here, the state of the washing water discharge in this embodiment is demonstrated. FIG. 5 is a voltage waveform diagram showing the state of excitation of the pulsation generating coil 74d of the pulsation generating device 74 that generates pulsation when water is discharged, and FIG. 6 shows the flow velocity of the cleaning water flowing out from the pulsation generating device 74. A timing chart shown in FIG. 7 is an explanatory diagram schematically illustrating the state of the water discharged from the water discharge hole 401.

  The control unit 10 excites the pulsation generating coil 74d and outputs a pulsed signal when the pulsation generating device 74 generates pulsation. Then, this pulse signal is output to a switching transistor (not shown) connected to the pulsation generating coil 74d for turning it on. Therefore, the pulsation generating coil 74d is repeatedly excited by turning ON / OFF the switching transistor according to the pulse signal, and periodically reciprocates the plunger 74c as described above. Accordingly, the cleaning water is supplied from the pulsation generating device 74 to the water discharge hole 401 in a pulsating flow state in which the pressure periodically fluctuates up and down, and the pulsating flow cleaning water is discharged from each water discharge hole.

  FIG. 5 shows a pulse signal applied to the pulsation generating coil 74d, and FIG. 6 shows a timing chart of the flow rate of the washing water flowing out from the pulsation generating device 74 thereby. FIG. 6 shows a waveform calculated based on the equation of flow velocity V = C√ΔP based on the pressure value shown in FIG. From FIG. 5, the pulse signal applied to the pulsation generator has a voltage waveform in which two rectangular groups having different ON times are combined in one cycle. A change in the flow rate of the washing water flowing out from the pulsation generating device 74 caused by this control will be described based on the operation of the plunger 74c of the pulsation generating device 74. A voltage waveform shown in FIG. 5 is applied to the pulsation generator 74. At T1, when a voltage is applied to the pulsation generating coil 74d of the pulsation generating device 74 and a current flows, the coil is excited and the plunger 74c is magnetized and attracted downstream. The downstream spring 74f is compressed to store energy by this attraction to the downstream side, and at the same time, pressurizing the wash water and reaching the highest pressure P4, the flow rate of the wash water discharged from the water discharge hole 401 is the highest. (V4). Thereafter, when the voltage is cut off at T2, the excitation of the coil disappears, and the urging force of the return spring 74f is received to return to the original position. At the same time, the pressure decreases and reaches the minimum pressure P1. At that time, the flow rate of the wash water discharged from the water discharge hole 401 is also lowered and falls to the lowest flow velocity region V1. After that, it tries to return to the water supply pressure Pin, and the flow velocity also tries to return to the flow velocity Vin at the time of the water supply pressure. By adding a rectangular wave of T3 with an ON time shorter than T1 to this return timing, the coil is excited. When the plunger 74c is attracted to the downstream side, the washing water is pressurized again. At this time, because the water pressure is in the process of returning and the time T3 is shorter than T1, the wash water does not increase up to the maximum pressure P4 but reaches the second peak pressure P2 higher than the supply water pressure. Therefore, a second peak flow velocity V2 that is higher than the flow velocity at the time of feed water pressure appears. In addition, a period of time during which water is discharged in the vicinity of the flow velocity Vin at the time of the incoming water pressure occurs for a certain period of time until the second peak flow velocity V2 and the timing V3 at which the plunger is excited again.

Here, the timing of the voltage waveform applied to the pulsating coil 74d is a pulsation frequency of 50 Hz, T1 is set to 4.8 msec, T2 is set to 7 msec, and T3 is set to 1 msec. However, the time widths of the frequencies, T1, T2, and T3 are not limited to this, and may be a repetitive frequency of a dead band frequency of 5 Hz or more, and the time widths from T1 to T3 may be set based on the period.

  Then, the state of the wash water obtained by the flow velocity waveform created as described above will be described. FIG. 7 is an explanatory diagram for explaining the assumption that when the pulsating flow of washing water is discharged from the assumed water discharge hole 40, the discharged washing water is amplified to the pulsating flow. Here, the relationship between the pressure fluctuation and the flow velocity change will be described with reference to FIGS. When the pressure is pulsated by the pulsation generating device 74, the flow velocity V is similarly changed to be pulsated. That is, when the pressure fluctuation in the discharged water becomes Pmax, the flow velocity also becomes the maximum velocity Vmax, and the instantaneous flow velocity fluctuates with time. Moreover, if each part in the pressure waveform of the washing water of the pulsating flow in FIG. 3 is P1, P2, P3, P4, and P5, the flow rates of V1, V2, V3, V4, and V5 in FIG. Correspond. Therefore, since V2 is faster than V1 as it moves from (A) to (D) in FIG. 7 immediately after water discharge, V3 merges with V2 to form a large water mass. Here, the relationship between the pressure P and the flow velocity V is V = C√ΔP.

  Thus, in the rising gradient of the flow velocity waveform, the fast flow velocity is sequentially merged with the previous slow flow velocity, so that it becomes a large lump and reaches the human body part (cleaning surface). Here, as shown in FIGS. 7A and 7B, since the overall flow velocity is slow at the rising gradient of the flow velocity in the lower flow velocity region, V2 is V1 before landing on the human body part. And can make a big water mass. When this washing water hits a human body part, it is in a water mass state with a large collision energy (washing strength). On the other hand, as shown in (C) and (D) of FIG. 7, in the rising slope of the flow velocity in the flow velocity region on the higher side of V3 and V4, since the entire flow velocity is fast, until the water hits the local body part Since the distance is not easily reduced in a short time, V4 will land as a small water mass quickly and hardly merge with V3 at the time of landing on the human body part. When this washing water hits the human body part, the collision energy (washing strength) is in a state of high speed. At this time, there is a sufficient opening in the timing of V2 and V4. In other words, by controlling so that peaks appear in V2 and V3, the water mass generated by V2 and the water mass generated by V4 are , A sufficient time difference occurs at the stage when V4 is discharged. As a result, the large and slow water mass generated at the flow velocity V2 means that the small and fast water mass generated at the flow velocity V4 can land independently at different local flow rates on the human body without interfering with each other. . In addition, at the timing of transition from V4 to V1, the flow velocity is reduced, so that no water mass is generated and the region does not contribute to the feeling of cleaning. Therefore, reducing this area also leads to an increased feeling of cleaning. In addition, the water mass here means a cross-sectional area immediately after water is discharged from the water discharge hole when the cross-sectional area when cut at right angles to the traveling direction of the wash water discharged from the water discharge hole is followed after water discharge. If it becomes larger, it is called a water mass.

  Here, when the washing water catches up after the water discharge, the cross-sectional area of the water discharge increases, and when a water mass is formed, the load when hitting the human body part does not increase the cross-sectional area of the water discharge (the water mass is not formed). Compared with water discharge, the load when hitting in the human body part becomes larger. FIG. 8 is a timing chart showing a change in load when the water discharged in this embodiment hits the human body part. From this, it can be seen that two timing loads are increased in one cycle. From this, it can be seen that in one cycle, two water masses are formed and hit independently. In this case, a large and slow water mass hits first, and a small and fast water mass hits later. Therefore, the user can feel two water masses having different flow rates and sizes independently. In this case, the user can feel a sense of volume with large and slow polka dots, and can feel strength with small and fast polka dots. In addition, about the change of this load, although the value integrated by each mountain | heap becomes M * V, ie, an impact force, when this value becomes large enough, it can obtain the perceived feeling. Also, the water mass referred to here means landing on the human body with a certain impact force, and even if it does not appear to be a water mass (polka dot shape), it is called a water mass. Here, the wash water discharged by the pulsating flow has a slow and large water mass in the flow velocity waveform in this case because a slow and large water mass having a velocity V2 and a fast and small water mass having a velocity V4 appear at each pulsation cycle MT. Then, small and fast water masses appear alternately, that is, appear at intervals of half the pulsation cycle MT. Therefore, even if the period is long, it is possible to obtain a more comfortable feeling of cleaning, and it is possible to provide more comfortable cleaning for people who do not feel intermittent. In addition, each of these water masses is connected to V5 and V1 discharged from V4 with a delay.

  Next, the effect obtained by such a state of water discharge will be described. A large water mass formed by coalescence at the rise of the low-side flow velocity is a larger water mass because the fluctuation amount of the low-side flow velocity is larger than the fluctuation amount of the high-side flow velocity. Here, a process in which a water mass is generated on the low flow rate side will be described. The water mass is generated by catching the fast wash water to the slow wash water at a time interval until the wash water is discharged from the water discharge hole 40 and hits a local part of the human body. At this time, if a water mass is to be generated in a region where the flow velocity is high, the time required to reach the human body part from the water discharge hole is short. For example, when the flow velocity is 15 m / sec, the time to reach the human body part 60 mm ahead is 4 msec. On the other hand, when considered in the slow flow velocity region, the time from the water discharge hole to the human body part is longer than that in the fast flow velocity region. For example, when the flow velocity is 7.5 m / sec, the time to reach the human body part is 8 msec. At this time, if there is the same amount of speed difference, the longer the time to reach the human body, the larger the amount that can be caught up. That is, it is possible to efficiently generate a larger water mass when the water mass is generated on the side where the flow rate of the washing water is lower. Since the water mass generated in this way is a larger water mass, the cross-sectional area S of the water mass is larger than usual. Therefore, there is a feeling of washing, that is, a feeling of volume, in which the water discharged with a large cross-sectional area is applied and the washing is performed at a large flow rate even though the amount of washing water is small. Further, in this water mass, although the speed is low, the amount of the water mass is large, so that the impact force related to the cleaning strength (cleaning strength) becomes large. On the other hand, the fast and small water mass cannot catch up with the previously washed water at the fast flow velocity V4, and land on the human body part before the water mass becomes large, so the cross-sectional area is small and the volume is poor. Become. However, the fact that it cannot catch up with the previously washed water can land on the human body part without absorbing energy at a slow flow rate, so that it can land while maintaining its strength. At this time, the impact force related to the strength of cleaning (cleaning strength) increases the flow velocity, and thus the impact force also increases. Therefore, by providing a feeling of volume with a large and slow water mass and giving strength with a small and fast water mass, it is possible to realize a highly comfortable cleaning that balances the feeling of mass and strength. The large and slow water masses and the small and fast water masses each have a sufficient impact force, so that it can be felt as a pulsation of about half of the pulsation cycle MT, and this sensation can be identified by humans. Because it is sufficiently short compared to the senses, it is possible to feel the strength and volume as a continuous washing.

Next, the phenomenon of water mass generation will be described. FIG. 9 is a timing chart showing a flow velocity waveform and a tracking curve according to the first embodiment. First, the following curve will be described. The follow-up curve indicates that even when the water is discharged and the flow rate of water discharged is different from each other, if it is on this curve, it will simultaneously land on the human body 60 mm ahead. Here, it is assumed that wash water having a flow velocity of v1 is discharged at the timing of t1. And after that Δt,
It is assumed that washing water having a flow velocity of v2 is discharged. At this time, if the distance from the nozzle to the human body is d, the time T required for the washing water having a flow velocity of v2 that comes out later to land on the human body is T = d / v2. Here, considering the washing water having the flow velocity of v1 previously, the washing water having the flow velocity of v1 comes out ahead of the washing water having the flow velocity of v2 by Δt. Progressing. In this state, if the human body has a speed of just landing on the human body after the time T required for the washing water having a flow velocity of v2 to land on the human body, v1 and v2 will land simultaneously. Therefore, the relationship between T and V of the follow-up curve for landing at the same time is expressed by a relational expression of v2 = (d · v1) / (Δt · v1 + 60). Then, the washing water having a flow rate slower than this curve is followed by the washing water having a high flow rate that comes later, and merges and reaches the human body at the same time. Therefore, when the follow-up curve is overlapped with the flow velocity waveform v2 as the base point in the flow velocity waveform, the flow velocity region slower than this follow-up curve is all added to the wash water having the flow velocity v2, and the integrated value A water mass having a volume of is generated and landed on the human body. In this case, the speed of the water mass is 12 m / sec, and the water mass is as large as 21 μL. On the other hand, in the follow-up curve drawn with v4 as the base point and the flow velocity waveform in the vicinity thereof, the slope is more sluggish than the follow-up curve, and the slow region (right hatched portion) is very small. In this case, although the amount of water mass is small, the amount of follow-up is small, so that the speed is absorbed by the slow flow velocity and does not become slow, that is, a small but fast water mass is generated. In this case, the speed of the water mass is 14 m / sec, and the water mass is 6 μl. From these things, that is, the water will land on the human body without the strength being attenuated. From these facts, in large water mass, the amount of water mass increases, so you can get the same feeling as washing with a large amount of water, and in small and fast water mass, it will land on the human body without slowing down In addition, you can feel the strength. In addition, by applying this water mass to the human body at a high frequency, it is possible to feel both strength and volume at the same time. Here, in order to feel a sense of volume with a large water mass, a water mass of 19 μl or more is necessary, and in order to feel strength with a fast water mass, a flow velocity of 13 m / sec or more is necessary. I know that. Furthermore, in each dead band frequency region of 5 Hz or more, each water mass reaches at least once, thereby making it possible to simultaneously feel strength and volume. That is, the pulsation frequency may be 5 Hz or more.

  Next, the feeling of cleaning in the present invention will be described. FIG. 10 shows an example of the relationship between the feeling of cleaning and the physical quantity. As shown in FIG. 10, the feeling of cleaning is composed of strength and quantity. The strength means that quick water is applied to the human body and a stimulus close to pain is felt, and depends on the flow velocity V. On the other hand, the sense of volume is a feeling that a large water flow is hit by the water discharge having a large water discharge cross-sectional area with sufficient force, and the water discharge cross-sectional area S (weight) M) depends on the impact force M · V in that it has sufficient force. By achieving all of these physical quantities, comfortable cleaning can be realized, but from the viewpoint of energy saving, if hot water is generated by an instantaneous heat exchanger that is currently mainstream, the amount of cleaning water will be less than 500 ml / min. It is difficult to achieve. Therefore, in order to achieve all of these, the production of water mass was examined. FIG. 11 shows an example of the flow velocity waveform of the pulsation transition and the shape of the generated water mass. Note that the relationship is an example, and the relationship is not necessarily generated due to a difference in flow velocity range. A water mass with a fast I is a water mass in which the rising speed of the flow velocity is made gentler than the follow-up curve to reduce the amount of follow-up, and the speed is fast but the amount of water mass is small. Despite this, a water mass with a small volume is generated. A large water mass of II is a water mass that is gathered by gradually following up by making the rising slope of the pressure close to the follow-up curve, the speed is reduced, the strength is not so much, but the water mass A large amount of water and a large impact force are generated. The dispersed water mass of III is made to follow up in a state where the speed difference between the slow flow rate and the fast flow rate is large by making the rising slope of the pressure steeper than the follow-up curve, and the water discharge of the fast flow rate is slow first This is a water mass that disperses the water discharge so as to blow off the water discharge at a flow rate, and a large water mass is generated by increasing the area. As described above, by generating different pulsating flows, it is possible to generate water discharge with different characteristics in different types of water masses, but on the other hand, one of physical quantities related to strength and volume is applied. It was. Therefore, each kind of water mass is allowed to land on the human body at least once within a dead band period of about 5 Hz or more, in which humans cannot perceive vibrations based on intentional repeated water discharge. Each mass independently creates a physical quantity and sensation, and each hits independently as a water mass, but because it lands within the dead zone period, it has all the physical quantities, that is, water discharge with strength and volume. You can feel it.

  As described above, we change the size, speed and amount of water mass to form water masses with different physical quantities, generate water masses with different sensations, and make these water masses independent. In this way, water discharge with a plurality of senses is realized by landing on the human body in a short time. Here, an example of the combination will be described. In FIG. 12, the schematic diagram of the example of the combination of a water mass is shown. FIG. 12 (a) shows a state in which large water masses alternately generate fast water masses at t2 and land on the human body independently at t1. In such water discharge, first, a large water mass is generated by increasing the amount of water discharged. In this case, the fast speed is attenuated by chasing and the speed is reduced, so the strength is poor, but the size of the water mass is large, it has a certain area, and the impact force is large So you can feel a sense of volume. After that, by reducing the amount of follow-up, although the size of the water mass is small, the strength can be felt with water discharge that maintains the strength because there is no deceleration of the speed of water discharge. These two kinds of water mass can be made to feel water discharge having both strength and volume feeling by watering at least once each within a dead zone period of 5 Hz. FIG. 12B shows a state where dispersed water discharge and large water discharge are alternately generated. In this case, a very high volume feeling is obtained with the dispersed water mass, and later, a large water mass with a large amount of follow-up is generated, so that a water mass with sufficient impact force hits, Since it has a volume and a certain flow velocity, you can feel the weight of water discharge. FIG. 12C shows a state where dispersed water masses and fast water masses are alternately generated. A large amount of feeling can be obtained with dispersed water discharge, and strength can be felt with fast water discharge. In addition, these water masses may be generated by combining three, thereby realizing a very high volume feeling and strong water discharge. In this case, the order may be other orders, or the order may be changed every time. Further, the timing of the water mass landing on the human body is not necessarily regular, and the interval of the water mass may be different. In this case, for example, a table of frequencies at which the pulsation period changes may be prepared in advance, and the frequency may be varied at the dead band frequency or higher. Further, it may fluctuate randomly above the dead band frequency. Further, pulsation may be generated sporadically. Thus, in the present invention, different sensations can be generated by different water masses, and a plurality of water masses can be applied within the dead zone period, and different sensations can be generated by the respective water masses. These are just examples of water masses, and the combinations are merely examples. It is important to realize a high feeling of washing by making up different sensations, insufficient sensations, and physical quantities with different water masses.

  Next, a second embodiment of the present invention will be described. FIG. 13 shows the voltage waveform applied to the pulsation generating device, FIG. 14 shows the timing chart of the pressure fluctuation at the nozzle tip caused by the pulsation generating device, and FIG. 15 shows the timing of the flow rate change of discharged water caused by the pressure fluctuation. A chart is shown. The configuration other than the above is substantially the same as that of the first example, and the detailed description of the same components as those of the first embodiment in the second embodiment is omitted.

  A pulsation generating coil 74d of the pulsation generating device 74 is applied with a voltage waveform in which a positive voltage and then a negative voltage are applied during one cycle, as shown in FIG. Next, the state of water discharge generated by this voltage waveform will be described. FIG. 15 shows a timing chart of the flow rate of the washing water flowing out from the pulsation generating device 74. Based on the pressure value of FIG. 14, the flow rate V = C√ΔP (C is a flow coefficient). It is calculated. The state of change in the flow velocity shown in FIG. 15 will be described according to the operation of the plunger 74c of the pulsation generating device 74. At T1 in FIG. 10, when a positive voltage is applied to the pulsation generating coil 74d of the pulsation generating device 74 and a current flows, the coil is excited and the plunger 74c is magnetized and attracted downstream. Due to the attraction to the downstream side, the return spring 74f is compressed to store energy, and at the same time, the washing water is pressurized and reaches the highest pressure P4. At that time, the flow rate of the wash water discharged from the water discharge hole 401 is the highest (V4). Thereafter, when the voltage is cut off at T2, the excitation of the coil disappears, and the biasing force of the return spring 74f is received to return to the original position. At the same time, the pressure drops. At that time, the flow rate of the wash water discharged from the water discharge hole 401 is lowered. Thereafter, at T3, by applying a negative voltage, the return speed of the plunger 74c is increased. As a result, the plunger reaches the upstream side beyond the original position, and compresses the buffer spring 74e. At this time, since the return speed is increased, the time required to reach the bottom flow velocity V1 from the peak flow velocity V4 can be shortened, and the bottom flow velocity V1 is further lowered because it reaches the upstream side beyond the original position. . The principle of increasing the return speed and its effect will be described later. Thereafter, it receives the urging force of the buffer spring 74e and returns to the original position again. At this time, due to the urging force of the buffer spring 74e and the inflow of cleaning water, it normally returns to the water supply pressure, but exceeds the water supply pressure and reaches the second peak pressure P2. Therefore, the second peak flow velocity V2 that has a higher flow velocity than that at the time of the supply water pressure appears. In addition, a period in which water is discharged in the vicinity of the flow rate at the time of the incoming water pressure is generated for a certain period of time until the second peak flow velocity V2 and the timing V3 at which the plunger is excited again. Here, the timing of the voltage waveform applied to the pulsating coil 74d is, for example, when the pulsation frequency is 50 Hz, the period is 20 msec. In this case, T1 is set to 4.8 msec, T2 is set to 1 msec, and T3 is set to 1 msec. It is. However, the frequency and the time width of T1, T2, and T3 are not limited to this. Further, the voltage waveform to be applied may be not only a rectangular wave but also a Sin waveform as shown in FIG. 16, and in this case, it is possible to obtain the above-described effect by applying halfway through the phase control. .

  Here, the mechanism of the effect obtained by applying the negative voltage will be described. The plunger 74c is energized when a current flows through the pulsation generating coil 74d. As a result, the plunger 74c is magnetized and is attracted downstream while compressing the return spring 74f. Thereafter, when the current is cut off, the coil excitation of the pulsation generating coil 74d disappears and the magnetic force of the plunger 74c is reduced, so that the pulsation generating coil 74d returns to the original position by the urging force of the return spring 74f. At this time, even if the coil excitation is turned off, the magnetic force of the plunger 74c remains and residual magnetism is generated. Due to this residual magnetism, a force is generated in a direction opposite to the urging force of the return spring 74f (downstream side), that is, a force is generated in a direction that prevents the return to the original position due to the residual magnetism. . FIG. 17 shows the time change of the current applied to the pulsation generating coil 74d when residual magnetism is generated. As shown in FIG. 17, it can be seen that even when the voltage becomes 0 V, the current does not immediately become 0, but the current flows slowly. This occurs because residual charges are stored in the pulsation generating coil 74d and released. It can be seen that residual magnetism is generated by this residual charge, and as a result, a force is generated in the reverse direction when the plunger 74c is returned. By applying a negative voltage in this state, a reverse current flows through the pulsation generating coil 74d. When the coil is excited, a reverse magnetic field is generated, and the residual magnetism can be immediately reduced. FIG. 18 shows the state of the current flowing through the pulsation generating coil 74d at this time. From FIG. 18, it can be seen that the current is zero almost simultaneously with the voltage applied to the pulsation generating coil 74d being zero volts. As a result, the influence of residual magnetism can be reduced, and the return speed to the original position of the plunger 74c can be increased. As a result, the transition time from the peak flow velocity V4 to the bottom flow velocity V1 can be shortened, and the bottom flow velocity V1 can be reduced. When the bottom flow velocity V1 returns to the flow velocity V2 at the time of feed water pressure, A peak flow rate V2 can be generated. Furthermore, shortening the time interval from the peak flow velocity V4 to the bottom flow velocity V1 is a region where the pressure drop (flow velocity drop) does not contribute much to cleaning because no water mass is generated. The area can be shortened. Further, the region from the bottom flow velocity V1 to the second peak flow velocity V2 can be made early, and a sufficient free time can be created between the second peak flow velocity V2 and the flow velocity V3 which is the next pressurization timing. It can also lead to a widening of the sensation of water bodies of different sizes. This leads to the creation of different water masses at the same timing during one cycle, and this also makes it possible to realize a comfortable cleaning with a low intermittent feeling even at a low frequency.

  The method of reducing the residual magnetism is not limited to the method of applying a negative voltage. Separately from the circuit for applying a voltage to the pulsation generating coil 74d, the voltage of the pulsation generating coil 74d is turned off by a switching transistor. A similar effect can be obtained by a residual charge consuming circuit (not shown) that switches at the timing when the residual charge is consumed and consumes the residual charge by the capacitor. In addition, the current value when the voltage is OFF may be suppressed by a snubber circuit or a bridge circuit.

  Further, the method of increasing the return speed of the plunger 74c is not limited to the method of reducing the residual magnetism. FIG. 16 shows a modification of the pulsation generating device for increasing the return speed of the plunger 74c.

  As shown in FIG. 16, the second coil 74k is provided upstream of the pulsation generating coil 74d of the pulsation generating device 70. Simple rectangular waves with different phases shown in FIG. 17 are applied to the first coil 75d and the second coil 75k. As a result, since the voltage is applied to the second coil 74k at the timing when the plunger 74c returns, the plunger 74c is attracted to the second coil 74k, and the return speed of the plunger 74c is increased. As a result, the same effect can be obtained.

  The method for increasing the return speed of the plunger described in the second embodiment and the generation of the two pulses described in the first embodiment may be used in combination. This leads to faster and faster bulky water mass, and it is possible to increase strength and volume.

  Next, a third embodiment will be described. FIG. 19 shows a voltage waveform applied to the pulsation generating device 74, and FIG. 20 shows a timing chart of the flow rate change of discharged water caused by the pressure fluctuation of the pulsation generating device 74. The configuration other than the above is substantially the same as that of the first embodiment, and in the third embodiment, detailed description of the same components as those of the first embodiment is omitted.

  As shown in FIG. 19, the pulsation generating coil 74d of the pulsation generating device 74 includes a region Ta1 that is intermittently applied during the ON time in one cycle, a region Ta2 that is turned OFF for a certain period, and a region Ta3 that is subsequently turned ON. A pulse waveform with is added. The total period at this time is MT. FIG. 20 shows a timing chart of the fluctuation of the flow velocity caused by this. In FIG. 20, the follow-up curve (dotted line) at the 60 mm point described above is drawn. Next, the state of water discharge will be described with reference to FIG. In FIG. 20, in the region Ta1 where the ON time is intermittently applied, the ON time becomes intermittent, so that the plunger 74c is sucked at a slightly slower speed than the normal ON Ta3 pulse. As a result, the increase in the flow velocity from the first bottom flow velocity Va1 reaches the first peak flow velocity Va2 gently. At this time, the rising gradient of the flow velocity is gentler than the follow-up curve and hardly catches up, but almost no deceleration due to follow-up occurs, so a fast water mass is generated (first water mass). . On the other hand, in the region Ta2 where the fixed period is ON, since the suction is performed at once, the flow rate rapidly increases from the second bottom flow velocity Va3 and reaches the second peak flow velocity Va4. The rising slope of the flow velocity at this time is the same as or a steep slope of the follow-up curve, and a large water mass is generated when the follow-up occurs (second water mass). At this time, a large amount of water is generated by chasing a large amount of the second water mass, but at that time, it is slightly decelerated by the chasing. Here, in the flow velocity waveform, the second peak Va4 is slightly higher than the first peak Va2, so that two types of water masses having different sizes are generated while the water mass speeds are substantially the same. Is done. As a result, a large water mass and a small water mass alternately hit the human body. Here, since the first fast water mass has a high flow velocity and a small area, the pressure when hit is increased and the strength is felt. On the other hand, since the second large water mass has a large area, the pressure is dispersed and weakened, but since the area is large, a feeling of volume is felt. In this way, it is possible to achieve both strength and sense of mass by generating water masses having different sizes and applying them to the human body at least once within the dead band frequency.

  In addition, it is not always necessary to regularly generate the water masses having different sizes, and it is sufficient that the water bodies land on the human body at least once in the dead band frequency of 5 Hz or more. Further, the generated frequency may vary.

  Next, a fourth embodiment will be described. FIG. 21 is a schematic cross-sectional view showing a motor-type reciprocating type pulsation generator 90. Except for the pulsation generating device, the second embodiment is the same as the first embodiment. In the fourth embodiment, detailed description of the same components as those of the first embodiment is omitted.

  The pulsation generator 90 is composed of two stations in which a first pulsation generator 91 and a second pulsation generator 92 are provided. In the pulsation generating portions 91 and 92, cylinders 910a and 920a are formed in a cylindrical space, respectively. Pistons 910b and 920b are provided in the cylinders 910a and 920a. O-rings 910c and 920c are attached to the pistons 910b and 920b. Pressurizing chambers 910d and 920d are formed in the spaces defined by the pistons 910b and 920b and the cylinders 910a and 920b. Into the pressurizing chambers 910d and 920d, the washing water inlets 910e and 920e are branched from the water supply pipe 67 so that the washing water flows. At that time, the umbrella packing 910f, 920f prevents back flow. In addition, washing water outlets 910g and 920g are provided, and merged in the middle, and pressurized washing water flows out. At that time, the umbrella packing 910h, 920h also prevents backflow.

  In the pulsation generator 91 (92), a gear 912 (922) is attached to the rotation shaft of the motor 911 (921), and the gear 912 (922) and the gear 913 (923) are engaged with each other. A crankshaft 914 (924) is attached to the gear 913 (923), and a piston 910b (920b) is attached via a piston holding portion 915 (925). The joint radius of the crankshaft 924 and the gear 923 is set so that the stroke of the piston 920b of the second pulsation generator 92 is shorter than the stroke of the piston 910b of the first pulsation generator 91. It is shorter than that of the generator 91.

  When the rotation shaft of the motor 911 (921) rotates based on the control signal given by the control unit 10, the gears 912 (922), 913 (923), the crankshaft 914 (924), and the piston holding portion 915 (925) are moved. Accordingly, the piston 910b (920b) reciprocates, and the pressure fluctuation, that is, the pulsation is generated by changing the volume of the pressurizing chamber. At this time, the strokes of the pistons 910b and 920b operate as shown in FIG. In other words, the stroke of the piston 920b is set to be approximately half of the stroke of the piston 910b and the phase is shifted by 180 °. Note that the period is the same.

    Next, how the flow velocity generated by the pulsation generator 90 changes will be described with reference to FIG. FIG. 24 is a timing chart showing changes in pressure and flow velocity generated by the pulsation generator 90. In FIG. 24, when the pulsation generating unit 92 (piston B) strokes to the top dead center at the timing of S1, the washing water in the pressurizing unit 920d is pressurized and accelerated to the flow velocity Vm1 shown in FIG. At this time, when the piston B is lowered after the first peak flow velocity is generated, the flow velocity is also lowered, and at the timing of S2, the flow velocity is lowered to Vm2. Then, at the timing when the piston 910b (piston A) of the pulsation generating portion 91 reaches top dead center, the flow velocity reaches the second peak flow velocity Vm3. Then, the piston A descends and the flow velocity also descends to Vm4.

  By causing such a flow rate fluctuation, the wash water having the flow velocity Vm1 forms a first water mass while catching up with the wash water that comes out earlier. Moreover, the wash water having the flow velocity Vm3 forms a second water mass while catching up with the wash water that has come out earlier. At this time, there is a sufficient time interval in the timing at which Vm1 and Vm3 are generated. Therefore, when the second water mass is generated, the first water mass is in a sufficiently advanced position, and when landing on the human body, the water mass reaches independently. Therefore, since water bodies with different flow velocities continuously land, different sensations can be obtained for each water body.

  In this case, the pressure fluctuation occurs at a pressure higher than the feed water pressure, that is, a pressure whose minimum pressure fluctuation is higher than the feed water pressure. Thereby, even in a region where the water pressure of the water supply source is low, it is possible to achieve a high feeling of cleaning. Further, the pulsation generating device 90 may be configured such that the umbrella packings 910h and 920h on the downstream side of the pressurizing portions 910d and 920d are not provided. Thereby, the pressure fluctuation centering on the feed water pressure is generated. Thereby, the water mass can be generated with a simpler configuration. In addition, the electromagnetic pump described in the first embodiment may be provided with a check valve on the downstream side of the pressurizing chamber to cause pressure fluctuation in a region higher than the feed water pressure.

  In this case, the number of cylinders is one, and two pressurizing chambers are provided in the cylindrical direction, and the strokes may be set differently. Further, by providing three cylinders and providing a phase difference for each of the three cylinders, a flow velocity fluctuation having a peak flow velocity may be caused. At that time, water discharge having three senses can be generated, and various washing feelings can be realized. Moreover, you may arrange | position the pulsation generator shown in FIG. 2 in parallel. Moreover, these Examples are only examples of the invention and can be applied as appropriate.

  As a modification, an air mixing unit may be provided so that air is mixed from the tip of the cleaning nozzle 82 (swirl vortex chambers 301 and 302 in FIG. 4). The air mixing part is configured so that air pressurized by an air pump that forcibly introduces air is mixed from the tube connected to the tip of the nozzle, and matches the pressure fluctuation (Fig. 6) caused by the pulsation generator. The timing when air is mixed by pressurizing with an air pump is adjusted. The timing is controlled by synchronizing the voltage waveform applied to the pulsation generating device and the air pump so that air is mixed in the rising gradient range in the low flow velocity region. Thus, when air is mixed in at the timing of a large water mass, the water mass is dispersed and spreads over a wide range. That is, the apparent cross-sectional area is increased by air, and as a result, the feeling of volume is increased. On the other hand, since air is not mixed in the region where the flow velocity is high, the high flow velocity is discharged without being dispersed, and the human body is landed while maintaining the strength. This also makes it possible to achieve both strength and volume in a higher volume state. In addition, since the air mixing part is brought to the nozzle tip, it is possible to mix air efficiently, and at the same time, in the region where the flow velocity is high, air is not mixed more than necessary. Can be prevented from being attenuated. The aeration unit is not limited to the tip of the nozzle, and may be joined by piping before the nozzle. Further, the aeration unit does not necessarily have to be forcibly mixed, and natural suction may be used. In this case, it will be mixed in the washing water as bubbles, thereby increasing the volume of the water mass, and it is possible to achieve both strength and volume while further increasing the volume. is there.

Claims (5)

A water pipe,
A pressure fluctuation portion connected to the water supply pipe;
A control unit for controlling the pressure fluctuation unit;
A water discharge hole for discharging washing water to the human body provided on the downstream side of the pressure fluctuation unit;
A human body cleaning apparatus comprising:
The control unit generates a pulsation transition of pressure in the pressure fluctuation unit, and controls water discharge so that a pulsating flow having a portion having a different speed from the water discharge hole repeatedly appears due to the pulsation transition, and after the water discharge, A human body washing apparatus characterized by combining different parts and forming water bodies of different sizes continuously.   2. The human body cleaning apparatus according to claim 1, wherein the control unit controls the pressure fluctuation unit such that the water blocks having different sizes are generated at least once in a dead zone period.   3. The human body cleaning apparatus according to claim 1, wherein the control unit controls the pressure fluctuation unit such that the speed of the water mass differs between the formed water masses before and after. The pressure fluctuation part is
Connected to the water supply pipe,
A cylinder forming part of the water supply line;
A pressurizing unit that reciprocates in the cylinder and pumps cleaning water in the cylinder downstream;
The human body cleaning apparatus according to claim 1, further comprising a driving unit that drives the pressurizing unit.   The pressure fluctuation unit is connected to the water supply pipe and forms a part of the water supply pipe. The plunger reciprocates in the Zenki cylinder, and the cleaning water in the cylinder is pumped to the downstream of the cylinder. 5. The human body washing apparatus according to claim 1, further comprising an electromagnetic solenoid that is moved.

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