JPH06228999A - Sanitary washing nozzle and sanitary washer - Google Patents

Abstract

PURPOSE:To prevent the increase of the size of bubbles at a time when bubbles are mixed into wash water, and to obtain excess simulation and soft washing feeling while attaining miniaturization and the reduction of cost regarding a sanitary washing nozzle and a washer washing the affected part of the human body, etc. CONSTITUTION:A cut-off valve 15, a heating means 17 for heating wash water, a wash-water supply pump 20, an elector means 24 mounted on the suction port 25 side of the wash-water supply pump 20 and a sanitary washing nozzle 30 having bubble crushed bodies 38 in a water supply line 32 are provided. Since mixed bubbles pass through the bubble crushed bodies 38, the increase of the diameters of bubbles is prevented, a bursting-open sound at the time of ejection is reduced, and bubbles can be mixed effectively, thus eliminating the need for a driving source exclusive for mixing bubbles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing nozzle and a sanitary washing device used for sanitary washing toilet seats, etc., for washing human body parts after toilet, and particularly to a type for mixing air bubbles in washing water. Of the sanitary washing device.

[0002]

2. Description of the Related Art As a cleaning device of this kind for cleaning a human body local part, there is one for spraying hot water from a cleaning nozzle having a single or a plurality of nozzle holes to intensively clean a local part. Is a continuous steady flow, and there is a case where the user feels uncomfortable because of strong stimulation. Therefore, the cleaning device disclosed in Japanese Patent Publication No. 58-13688 has been conventionally known as a device in which bubbles are mixed into the cleaning water to obtain a soft feeling. In this device, an air suction unit for mixing air is provided in the vicinity of the ejection nozzle, and the mixing amount of air depends on the ejection speed or the ejection amount of washing water ejected from the nozzle. Therefore, there is a limit to the amount of air that can be mixed.

For this reason, in recent years, a method has been proposed in which air is forcibly mixed into the wash water as shown in FIGS. In the figure, 1 is a toilet bowl, 2 is a sanitary washing toilet seat, a toilet seat 3, a toilet lid 4, a main body 5 containing a cleaning device, and a cleaning nozzle 7 that is provided so as to project into the toilet bowl 1 and cleans a local part of a human body 6. Is provided. FIG. 7 shows the structure of the cleaning nozzle 7. Reference numeral 8 denotes a supply path for cleaning water, to which cleaning water mixed with air is supplied by an air pump 9 and an air supply means 10 provided on the upstream side. Reference numeral 11 is a nozzle cylinder, and 12 is a movable nozzle, which is configured to be pushed out to a local position by the water pressure of the washing water, and jet the washing water from the nozzle hole 14 to the human body local portion through the water supply passage 13.

When the cleaning water mixed with air acts on the supply passage 8 in the above structure, the movable nozzle 12 is pushed out by the water pressure and stops at a local position, and the cleaning water containing bubbles is ejected from the nozzle hole 14. Human body parts are cleaned. As a result, a sufficient amount of mixed air can be obtained, and the amount of mixed air can be adjusted according to preference.

[0005]

However, since air is mixed in the upstream side of the nozzle cylinder in the above-described conventional cleaning apparatus, individual bubbles interfere with each other while passing through the nozzle cylinder and the movable nozzle. Each other,
Air bubbles become non-uniform. That is, as shown in FIG. 7, the bubbles having a predetermined particle diameter that have flowed into the nozzle cylinder interfere with each other, and are separated into a gas phase and a liquid phase to change to a large diameter.
As a result, when jetting from the nozzle hole, there is a problem that a popping sound of bubbles is generated, or when the jet contacts the human body part, the washing water is scattered and an unnecessary portion is wetted.

Further, since the air supply means is provided to forcibly mix the air, a dedicated actuator for pneumatic feeding is required, which leads to an increase in cost.

Further, there is a problem that it is not possible to properly use the bubble-containing cleaning and the continuous continuous flow cleaning according to preference. That is, since this type of cleaning device has a plurality of users, a comfortable cleaning mode differs depending on sex, age, individual difference, physical condition and the like. Particularly, in the case of local washing of women, there is a difference in the washing form required for the purpose of maintaining hygiene during the menstrual period and the washing style required after usual small use, and improvement is desired.

The present invention is intended to solve the above problems,
It is a first object of the present invention to prevent the mixed air bubbles from becoming non-uniform, to provide a stable air bubble mixed cleaning water, and to provide a cleaning nozzle with less scattering of cleaning water and less popping noise of bubbles.

A second object is to obtain stable bubble-mixing cleaning water, and to realize a small size and a low cost by using a means for mixing bubbles as an essential component of this type of cleaning device. To do.

A third object of the present invention is to provide a sanitary washing device which can selectively use air bubble mixed washing and washing with continuous continuous flow according to the physical condition and taste of the user.

[0011]

In order to achieve the above first object, the sanitary washing nozzle of the present invention comprises an air mixing means for mixing air into the cleaning water supplied from the cleaning water supply means,
A movable nozzle body having a water supply passage communicating with the cleaning water supply means and a nozzle hole for ejecting the cleaning water to a human body part, and configured to be movable back and forth by the water pressure of the cleaning water, and a nozzle incorporating the movable nozzle body. A cylinder, a valve means for preventing the wash water from leaking to the outside at the advanced position of the movable nozzle, and an elastic member for urging the movable nozzle body in the backward direction, and water supply to the movable nozzle body. An air bubble crushing body for refining air bubbles mixed by the air mixing means is provided in the passage.

In order to achieve the second object, the sanitary washing device of the present invention is provided with a washing water supply passage, a water stop valve, a heating means for heating the washing water, and a downstream side of the heating means. A cleaning water supply pump and a cleaning nozzle for ejecting cleaning water from the cleaning water supply pump to a human body part, and air is mixed into the cleaning water at a predetermined ratio at the water intake side of the cleaning water supply pump. It is configured by providing ejector means.

To achieve the third object, the sanitary washing device of the present invention is provided with a washing water supply passage, a water stop valve, a heating means for heating the washing water, and a downstream side of the heating means. A washing water supply pump, a driving means for the washing water supply pump, and a suction port side of the washing water supply pump,
Ejector means for mixing air into the wash water at a predetermined ratio, an air supply pump for generating compressed air using the drive means of the wash water supply pump as a power source, and wash water from the wash water supply pump for the human body part. An air supply passage that has a cleaning nozzle that ejects to the air pump and that connects the outlet of the air pump to the ejector means, a flow passage switching valve that controls opening and closing of the air supply passage, and an air mixing control that controls the flow passage switching valve. It is provided with a circuit.

[0014]

With the above-described structure, the cleaning nozzle of the present invention has a structure in which the cleaning water mixed with air bubbles in the state where the movable nozzle body is pushed out to the human body local position is used for cleaning the bubble crushing body provided in the water supply passage of the movable nozzle body. Since it is ejected from the nozzle hole after passing, by mixing air on the upstream side of the nozzle cylinder, the bubbles that have flowed into the nozzle cylinder interfere with each other and separate into a gas phase and a liquid phase. Even when the diameter is changed, the particles are re-miniaturized in the process of passing through the crushed body of bubbles. As a result, non-uniformity of air bubbles is prevented, and air bubbles having a stable particle diameter are generated. When jetted to a human body part, a moderate stimulus and a soft washing sensation can be obtained. Further, the bubbles can be repelled to enhance the detergency. Further, since the bubble particle size does not become large, the popping noise of bubbles at the time of jetting from the washing nozzle can be reduced and the scattering of washing water can be reduced.

Further, since the cleaning device of the present invention is constituted by providing the ejector means on the water intake side of the cleaning water supply pump, which is an essential component of this type of cleaning device, as the air bubble mixing means, the water intake side The pressure becomes a negative pressure state, and the wash water passes through the ejector, so that the air is efficiently mixed in a state where the flow velocity is increased. As a result, there is no need for a dedicated drive source for mixing air, and cost reduction and device miniaturization can be realized. Further, since the flow rate of the wash water passing through the ejector means, that is, the flow rate of the wash water and the air suction amount are proportional to each other, the mixing ratio of the wash water and the air can be maintained at a predetermined ratio even when the flow rate of the wash water is changed. .

Further, in the cleaning apparatus of the present invention, ejector means for mixing air into the cleaning water at a predetermined ratio is provided on the water intake side of the cleaning water supply pump, and the driving means of the cleaning water supply pump is used as a power source. Since an air supply pump that generates compressed air is provided, forced mixing of air is possible, and a dedicated actuator for driving the air supply pump is not required, so cost reduction and downsizing of the device can be achieved. .

Further, an air supply passage for communicating the outlet of the air supply pump with the ejector means is provided, and a passage switching valve for controlling opening / closing of the air supply passage and an air mixing control circuit for controlling the passage switching valve are provided. Therefore, it is possible to select the cleaning method in which bubbles are mixed and the cleaning method using a continuous continuous flow is selected according to the user's preference. Further, if the mixing of air bubbles is intermittently performed, a cleaning mode in which the strength is alternately repeated is obtained, the monotonous feeling is eliminated, the cleaning power is improved, and the massage effect of the portion to be cleaned is also obtained.

[0018]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of a sanitary washing apparatus showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line XX in FIG. 1, and FIG. 3 is a sectional view taken along the arrow A in FIG. In the figure, 15 is a water shutoff valve provided in the wash water supply passage 16, 17 is a heating means for heating the wash water, and is composed of a hot water tank 19 for storing hot water heated by the electric heater 18. Reference numeral 20 denotes a wash water supply pump, which is a wash water supply means provided on the downstream side of the heating means 17, and as shown in FIG.
A pair of gears 22 are provided inside, and the gears 22 are formed by the rotation of the driving means 23 composed of a motor.
Rotates in the direction of the arrow and pumps the wash water under pressure. Reference numeral 24 is an ejector means provided on the water suction port 25 side of the wash water supply pump 20, and has an ejector nozzle 26 and an air suction port 27. The flow velocity of the ejector means 24 is increased by the cleaning water passing through the ejector nozzle 26, and the pressure of the air suction port 27 becomes a negative pressure state, whereby the cleaning water can be effectively mixed with air. Reference numeral 28 denotes a check valve provided in the air supply path 29, which is opened to suck air when the pressure of the air suction port 27 is in a negative pressure state.
When the pressure of the air suction port 27 becomes a positive pressure state, the valve is closed to prevent the washing water from being spouted to the outside.

A sanitary washing nozzle 30 is provided downstream of the washing water supply pump 20. The sanitary washing nozzle 30 is located in the nozzle cylinder 31 and the nozzle cylinder 31 communicating with the washing water supply pump 20, and is driven to move forward by receiving the water pressure of the washing water. It is configured by a movable nozzle body 34 that sprays the wash water toward the human body part from a nozzle hole 33 provided at one end of the wash water that has stopped at the human body part position and passed through the water supply passage 32. Here, the nozzle cylinder 31 is provided with a valve seat 35 for preventing leakage of washing water to the outside of the nozzle at the position where the movable nozzle body 34 advances, and the movable nozzle body 34 is provided with a valve seat 35 facing the valve seat 35. A body 36 is provided, and the valve seat 35 and the valve body 36 constitute a valve portion 37. Reference numeral 38 denotes an air bubble crushing body provided at the inlet end of the water supply passage 32, which is composed of a lattice-like member as shown in FIG.
Even if the bubbles that have flowed into 1 interfere with each other and separate into a gas phase and a liquid phase and change to a large diameter, they pass through the bubble crushing body 38 to be regenerated into bubbles of a predetermined particle size, It is ejected from the nozzle hole 33 toward the human body part.

Reference numeral 39 denotes an elastic member, which is configured to move the movable nozzle body 34 to the retracted position when the cleaning water supply pump 20 is stopped and the supply of cleaning water is stopped.

When the flow rate of wash water mixed in the ejector means 24 is Qw and the flow rate of air is Qa, and the mixing ratio is Rm = Qa / Qw, the mixing ratio is set so as to satisfy the condition of Rm <1. Has been done. This point will be described in detail with reference to FIG. FIG. 4 is a characteristic diagram showing the relationship between the mixing ratio of the air flow rate Qa and the flow rate Qw of cleaning water and the noise level generated from the cleaning nozzle 30 during cleaning, that is, the popping sound of bubbles. In the figure, Q _{T1 to} Q _T3 are sums of the flow rates of cleaning water and air, and the minimum flow rate (Q _T1 ), the standard flow rate (Q _T2 ), and the maximum flow rate (Q
The three levels of _T3 ) are shown. As can be seen from the figure, peaks are recognized for each level. This peak indicates a point where the bubble-mixed cleaning water ejected from the nozzle hole 33 changes from a continuous flow to an intermittent flow as the amount of mixed bubbles increases, and the noise level is the highest. When the mixing ratio increases, that is, when the air ratio increases and exceeds the peak point, the noise level tends to decrease, but an offensive sound is generated. For this reason, in this embodiment, the mixing ratio that does not exceed the peak at the minimum flow rate (Q _T1 ) required for this type of sanitary washing device, that is, Qa / Qw is set to 1 or less.

In the above-mentioned structure, the operation of this embodiment will be described below.
The effect will be described. Water stop valve 1 by the wash water request signal
When 5 is opened and the drive means 23 is rotated, the gear 22 of the wash water supply pump 20 is rotated, the pressure of the water suction port 25 becomes a negative pressure state, and the wash water stored in the hot water storage tank 19 at a predetermined temperature. Flows into the ejector nozzle 26, passes through it with an increased flow velocity. As a result, a predetermined amount of air is effectively sucked from the air suction port 27 and mixed into the wash water,
It flows into the nozzle cylinder 31 via the wash water supply pump 20.

The water pressure of the bubble-mixed cleaning water that has flowed into the nozzle cylinder 31 acts on the end face of the movable nozzle body 34 to move forward against the force of the elastic member 39, and the valve body 36 comes into contact with the valve seat 35 and closes. Then, the nozzle hole 33 reaches the position of the human body local part and stops, and the bubble-mixed cleaning water is ejected toward the human body local part for cleaning.

When air bubbles are mixed on the upstream side of the sanitary washing nozzle 30, the individual air bubbles interfere with each other in the process of passing through the nozzle cylinder 31, resulting in non-uniform air bubbles. That is, as shown in FIG. 1, the bubbles having a predetermined particle diameter that have flowed into the nozzle cylinder 31 interfere with each other, and are separated into a gas phase and a liquid phase to change to a large diameter. When it gushes from 33, a popping sound of bubbles is generated,
When the jet contacted the human body part, the washing water was scattered and an unnecessary part got wet. However, in the present embodiment, since the bubble crushing body 38 is provided in the water supply passage 32 of the movable nozzle body 34, The bubble having the increased diameter is regenerated into a bubble having a predetermined diameter while passing through the bubble crushing body 38. Therefore, the popping sound of the bubbles when ejected from the nozzle hole 33 can be reduced and the scattering of the washing water can be prevented. Further, since the ejector means 24 is provided on the side of the water suction port 25 of the cleaning water supply pump 20 which is an essential component of this type of cleaning device as an air mixing means, the pressure of the water suction port 25 becomes a negative pressure state and the cleaning is performed. Water is ejector nozzle 26
By passing through, the air is efficiently mixed in a predetermined ratio with the flow velocity being increased. As a result,
There is no need for a dedicated drive source for mixing air, and cost reduction and device miniaturization can be realized. Further, since the flow rate of the wash water passing through the ejector means 24, that is, the flow rate of the wash water and the air amount sucked from the air suction port 27 are proportional to each other, the wash water and the air are mixed even when the flow rate of the wash water is changed. There is an effect that the ratio can be maintained at a predetermined ratio suitable for cleaning.

Further, in the present embodiment, the amount of cleaning water to be used, which is ejected from the nozzle hole 33 and abuts against the body part of the human body, is the sum of the cleaning water and the amount of air bubbles, that is, air, so that the amount of cleaning water used can be reduced. . As a result, the hot water storage tank 19 can be downsized and the continuous hot water discharge time can be extended, so that even when there are a plurality of users, hot water shortage does not easily occur.

Further, since the ratio of the cleaning water and the air mixed by the ejector means 24 is limited to a predetermined range, the nozzle hole 3
It is possible to reduce the spurting noise of the washing water spouted from the nozzle 3.

FIG. 5 is a block diagram of a sanitary washing device according to another embodiment of the present invention. In the figure, 39 is an air supply pump that uses the driving means 23 of the wash water supply pump 20 as a power source to pump air, and 40 is an air supply that connects the outlet 41 of the air supply pump 39 and the air suction port 27 of the ejector means 24. The passage 42 is a passage switching valve interposed in the air supply passage 40. One output port 4 of the flow path switching valve 42
3 communicates with the air suction port 27 of the ejector means 24, the other output port 44 is open to the atmosphere, and the valve element 45
Is operated, the compressed air generated by the air supply pump 39 can be selected to be supplied to the ejector means 24 or discharged to the atmosphere.

Reference numeral 46 denotes an air mixing control circuit for controlling the flow path switching valve 42, which operates when the first switch 47 is turned on to select whether or not air bubbles are mixed.
8 and an intermittent control circuit 50 that operates by turning on the second switch 49 to intermittently drive the flow path switching valve 42 to intermittently mix bubbles.

Others are the same as those of the embodiment shown in FIG. 1, and the same reference numerals are given and detailed description thereof will be omitted.

Next, the operation and operation of this embodiment having the above structure will be described. Drive means 2 by the wash water request signal
When 3 rotates, the cleaning water supply pump 20 operates and the cleaning water is supplied to the cleaning nozzle 30. On the other hand, the drive means 23
Is operated, the air supply pump 39 also operates, and the air generated as shown in FIG.
A predetermined amount is forcibly sucked from the air suction port 27 of the ejector means 24 through the flow path switching valve 42 to be mixed with washing water, supplied to the washing nozzle 30, and ejected from the nozzle hole 33. At this time, by adjusting the rotation speed of the driving means 23, the water force ejected from the nozzle holes 33 can be set as desired. Further, since the rotation speed of the driving means 23 is directly proportional to the flow rate of cleaning water and the amount of air mixed in, the mixing ratio of cleaning water and air can be maintained at a predetermined ratio suitable for cleaning even when adjusting the water pressure.

When the first switch 47 of the air mixing control circuit 46 is selected, the bubble selection circuit 48 operates to close the output port 43 of the flow path switching valve 42 and the air generated by the air supply pump 39 is removed. The air is discharged from the output port 44 to the atmosphere, the air supply to the ejector means 24 is stopped, and the cleaning is performed only with the cleaning water. At this time, since the washing water force is set by the sum of the washing water and the air flow rate, a gentle washing feeling can be obtained with a small flow rate.
Further, if the first switch 47 is selected again, the bubble mixed cleaning is restored.

Further, when the second switch 49 is selected, the intermittent control circuit 50 operates to intermittently open and close the flow path switching valve 42 to intermittently mix air, which is caused by the bubble cleaning and the steady flow. The continuous washing is alternately repeated to eliminate the monotonous feeling of the user and to obtain the massage effect of the portion to be washed. The flow rate Qw of the washing water mixed by the ejector means 24 as in the embodiment shown in FIG.
Since the mixing ratio Rm between the air flow rate Qa and the air flow rate Qa is set to Qa / Qm <1, it is possible to reduce the ejection noise from the nozzle hole 33.

As described above, in this embodiment, the ejector means 24 for mixing air is provided on the water intake 25 side of the wash water supply pump 20, and the compressed air is supplied by the drive means 23 of the wash water supply pump 20 as a power source. Since the generating air supply pump 39 is provided, the air can be forcibly mixed, and a large amount of air can be mixed. In addition, a dedicated actuator for driving the air supply pump 39 is not required, so that cost reduction and device miniaturization can be achieved. Further, an air supply path 40 that connects the outlet 41 of the air supply pump 39 and the ejector means 27 is provided, and a flow path switching valve 42 that controls opening and closing of the air supply path 40 and an air mixing control circuit that controls the flow path switching valve 42. Since 46 is provided, it is possible to select the cleaning method in which air bubbles are mixed and the cleaning method using a continuous continuous flow according to the user's preference. Further, if the mixing of air bubbles is intermittently performed, a cleaning mode in which the strength is alternately repeated is obtained, the monotonous feeling is eliminated, the cleaning power is improved, and the massage effect of the portion to be cleaned is also obtained. Further, the driving source of the wash water supply pump 20 and the air supply pump 39 is driven by the driving means 23.
Therefore, when adjusting the water pressure of the wash water, the amount of air is proportionally increased or decreased by adjusting the rotation speed of the driving means 23, and the predetermined ratio suitable for washing is maintained at each water force. it can.

[0035]

As described above in detail, in the sanitary washing nozzle of the present invention, the washing water containing bubbles is ejected from the nozzle hole after passing through the bubble crushing body provided in the water supply passage of the movable nozzle body. Therefore, even if the size of the bubble is increased, the size of the bubble is reduced again in the process of passing through the crushed body of the bubble, so that the unevenness of the bubble is prevented and the bubble having a stable particle diameter is generated.
As a result, a moderate stimulus and a soft cleaning sensation can be obtained when it is ejected to the human body local area. Further, the bubbles can be repelled to enhance the detergency. Further, since the bubble particle size does not become large, the popping noise of bubbles at the time of jetting from the washing nozzle can be reduced and the scattering of washing water can be reduced.

Further, since the cleaning device of the present invention is constituted by providing the ejector means on the water intake side of the cleaning water supply pump, which is an essential component of this type of cleaning device, as an air bubble mixing means, The pressure becomes a negative pressure state and the wash water passes through the ejector, whereby the air is efficiently mixed at a predetermined ratio in a state where the flow velocity is increased. As a result, there is no need for a dedicated drive source for mixing air, and cost reduction and device miniaturization can be realized. Further, since the flow rate of the wash water passing through the ejector means, that is, the flow rate of the wash water and the air suction amount are proportional to each other, even if the flow rate of the wash water is changed, the mixing ratio of the wash water and the air is a predetermined value suitable for washing. You can maintain the ratio. Further, since the bubble-containing cleaning water ejected from the nozzle hole is the sum of the cleaning water and the air mixing amount, the amount of cleaning water used can be reduced as compared with the conventional case. As a result, the hot water storage tank can be downsized, and the continuous hot water discharge time can be extended.

Further, in the cleaning apparatus of the present invention, the cleaning water supply pump and the air supply pump both serve as power sources, and
Since the air supply pump forcibly mixes the air through the ejector means, a dedicated actuator for driving the air supply pump is not required, and the cost and size of the device can be reduced and a large amount of air can be generated. Can be mixed.

Further, since the flow path switching valve is provided in the air supply path which connects the outlet of the air supply pump and the ejector means, and the air mixing control circuit for controlling the flow path switching valve is provided, the bubble mixing cleaning is performed. And, the cleaning mode by continuous continuous flow can be selected according to the user's preference, and if the mixing of air bubbles is intermittent, the cleaning mode in which the strength is alternately repeated can be obtained, and the monotonous feeling is eliminated and the cleaning is performed. The power is improved, and the effect of massaging the portion to be cleaned is also obtained.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a sanitary washing device showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX in FIG.

FIG. 3 is a view on arrow A of FIG.

FIG. 4 is a characteristic diagram showing a relationship between a mixing ratio of air and cleaning water and a noise level during cleaning.

FIG. 5 is a block diagram of a sanitary washing device showing another embodiment of the present invention.

FIG. 6 is a sectional view of a conventional cleaning device.

FIG. 7 is an enlarged sectional view of the cleaning nozzle.

[Explanation of symbols]

 15 Water Stop Valve 16 Wash Water Supply Channel 17 Heating Means 20 Wash Water Supply Pump 23 Drive Means 24 Ejector Means 25 Water Intake Port 30 Sanitary Wash Nozzle 31 Nozzle Cylinder 32 Water Supply Channel 33 Nozzle Hole 34 Movable Nozzle Body 37 Valve Part 38 Bubble Crusher 39 air supply pump 40 air supply path 41 outlet 42 flow path switching valve 46 air mixing control circuit

Claims (4)

[Claims] 1. Cleaning water supply means, and air mixing means for mixing air into the cleaning water supplied from the cleaning water supply means,
A movable nozzle body having a water supply passage communicating with the cleaning water supply means and a nozzle hole for ejecting the cleaning water to a human body part, and configured to be movable back and forth by the water pressure of the cleaning water, and a nozzle incorporating the movable nozzle body. A cylinder, a valve means for preventing the wash water from leaking to the outside at the advanced position of the movable nozzle, and an elastic member for urging the movable nozzle body in the backward direction, and water supply to the movable nozzle body. A sanitary washing nozzle provided with a bubble crushing body for miniaturizing bubbles mixed by the air mixing means in the passage. 2. A wash water supply passage, a water stop valve, a heating means for heating the wash water, a wash water supply pump provided on the downstream side of the heating means, and wash water from the wash water supply pump. A sanitary washing device having a washing nozzle for ejecting the washing water to the human body part, and an ejector means for sucking and mixing air into the washing water at a predetermined ratio is provided on the water intake side of the washing water supply pump. 3. A wash water supply passage, a water stop valve, a heating means for heating the wash water, a wash water supply pump provided on the downstream side of the heating means, and a drive means for the wash water supply pump. An ejector means provided on the water intake side of the wash water supply pump for mixing air into the wash water at a predetermined ratio; and an air supply pump for generating compressed air using a drive means of the wash water supply pump as a power source. And a cleaning nozzle for ejecting cleaning water from the cleaning water supply pump to a human body part, an air supply path communicating the outlet of the air pump with an ejector means, and a flow path switching control for opening / closing the air supply path. A sanitary washing device provided with a valve and an aeration control circuit for controlling the flow path switching valve. 4. When the flow rate of wash water is Qw, the flow rate of air mixed in the wash water is Qa, and the ratio of wash water and air mixed by the ejector means is Rm = Qa / Qw, Rm <1. The sanitary washing device according to claim 2 or 3, wherein the sanitary washing device is configured so as to satisfy the conditions.