JPH08338058A - Washing nozzle device - Google Patents

Abstract

PURPOSE: To utilize an ejector effect to make it possible to effectively mix washing water with bubbles for a washing nozzle device for washing private parts, etc. CONSTITUTION: A washing nozzle device is equipped with a nozzle cylinder 11 internally having a movable nozzle 12 providing an air mixing device 21 constituted of ejector nozzle 16, air intake 17, air-mixing section 18, throat section 19 and diffuser 20. Since the air mixing device 21 is provided to an advanced position of the movable nozzle 12, the throat section 19 and diffuser section 20 can be provided, and air can be effectively mixed with washing water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning nozzle device used for sanitary cleaning toilet seats for cleaning a human body part, and more particularly to a cleaning nozzle device of a type in which cleaning water is mixed with air. .

[0002]

2. Description of the Related Art JP-A-58-58 is known as a device which can be washed with a soft feeling by mixing air bubbles into the washing water after use.
The sanitary washing nozzle device shown in Japanese Patent No. 9688 has been conventionally known.

A cross-sectional view of a conventional sanitary washing nozzle device of this type is shown in FIG. In the figure, the present nozzle 1 is composed of a first nozzle 2 and a nozzle body 3, and the pressure inside the cavity 4 is made negative by causing the washing water to contract at the first nozzle 2 and to be jetted at an increased flow velocity. , The air is sucked and mixed from the air suction port 5 by the ejector effect, and about 90
The direction of the water flow is bent so that the water is jetted from the jet port 6 toward the local part.

With this structure, by applying the cleaning water containing air bubbles to the local area, it is possible to save water without lowering the cleaning effect, reduce pain and scattering, and obtain a comfortable feeling. There is.

[0005]

The above-mentioned effects, namely, the effect of saving water, the pain at the time of washing, and the scattering of washing water, are increased as the amount of air sucked increases. In the case of effectively performing air suction by the air suction means utilizing the ejector effect of some kind, a throat portion and a diffuser portion having a predetermined diameter and length are required on the downstream side of the air suction portion.

However, in the conventional cleaning nozzle device,
Since the first nozzle 2 for sucking air, the hollow portion 4 and the air suction port 5 are provided in the main nozzle 1 having the jet port, the throat portion and the diffuser portion cannot be provided. For this reason, the negative pressure state of the cavity 4 cannot be kept sufficiently low, so that the air is not effectively sucked and mixed, and the effect of the air mixing and cleaning cannot be sufficiently exhibited.

Further, since the single injection port 6 is provided, the cleaning range is narrow and the local area cannot be cleaned over a wide range.
Since it is a concentrated jet, it hits the local area in a concentrated manner, and the refreshing feeling of a shower cannot be obtained. For this reason, there is a problem in that there is a risk of causing pain, especially when cleaning the female part (hereinafter referred to as bidet cleaning).

The present invention solves the above-mentioned conventional problems. By effectively sucking and mixing the air with the cleaning water, a sufficient soft feeling can be obtained especially during bidet cleaning, and the scattering of the cleaning water is effective. It is a first object of the present invention to provide a cleaning nozzle device that can be significantly reduced.

Further, by optimizing the inner diameters of the ejector nozzle and the throat portion, it is possible to effectively suck and mix air into the cleaning water, and to provide a cleaning nozzle device that can more effectively obtain a soft feeling during cleaning. That is the second purpose.

Further, by optimizing the inner diameter of the throat portion and the distance from the ejector nozzle outlet end face to the throat portion inlet, air is effectively sucked into and mixed with the washing water, and a softer feeling is obtained during washing. A third object is to provide a cleaning nozzle device that can be obtained.

Further, by optimizing the inner diameter of the throat part and the distance between the throat part, a cleaning nozzle device that effectively sucks and mixes air with the cleaning water to obtain a softer feeling during cleaning is provided. The fourth purpose is to provide.

A fifth object is to realize a water flow suitable for cleaning the female local area by optimizing the range in which the nozzle holes are arranged.

Further, by optimizing the thickness of the discharge portion of the nozzle hole and the nozzle hole diameter, independent water streams that do not interfere with each other are ejected from the plurality of nozzle holes, and a cleaning nozzle with a small amount of scattering of cleaning water is provided. The sixth purpose is to provide.

Further, it is a seventh object of the present invention to provide a washing nozzle which realizes a hollow water flow and prevents the washing water from directly hitting the delicate female local center portion and can be comfortably washed without causing pain. .

[0015]

In order to achieve the above-mentioned first object, a cleaning nozzle device of the present invention has a movable nozzle provided at one end with a nozzle body for ejecting cleaning water, and the movable nozzle is movable back and forth. A built-in nozzle cylinder, an air inlet provided in the nozzle cylinder and the movable nozzle, an ejector nozzle, an air mixing unit inside the movable nozzle,
An air mixing unit including a throat section and a diffuser section is provided, and the air mixing section is configured to be capable of sucking and mixing air from an air intake port communicating with the advancing position of the movable nozzle.

In order to achieve the second object, in the cleaning nozzle device of the present invention, the cross-sectional area of the ejector nozzle is S ₁ , the cross-sectional area of the throat portion is S _2, and the value of the area ratio S ₂ / S ₁ is Where α is α, the condition of 1.5 ≦ α ≦ 4.5 is satisfied.

In order to achieve the third object, in the cleaning nozzle device of the present invention, the inner diameter of the throat portion is e and the distance from the ejector nozzle outlet end face to the throat portion inlet is L _1.
And when the ratio L ₁ / e of these is β, 1 ≦ β ≦ 3
It is configured to satisfy the following condition.

In order to achieve the fourth object, in the cleaning nozzle device of the present invention, the inner diameter of the throat portion is e, the length of the throat portion is L _2, and the ratio L ₂ / e thereof is δ. In this case, the condition of 1.6 ≦ δ ≦ 7 is satisfied.

Further, in order to achieve the fifth object, the cleaning nozzle device of the present invention is provided with a plurality of nozzle holes in the nozzle body and has a maximum pitch Pm in the front-back direction with respect to the advancing and retracting direction of the nozzle body. When the maximum pitch in the left-right direction is Pn, the conditions of 10 ≦ Pm ≦ 18 and 3 ≦ Pn ≦ 5 are satisfied.

Further, in order to achieve the sixth object, the cleaning nozzle device of the present invention is such that the thickness of the discharge portion of the nozzle hole is tn,
When the nozzle hole diameter is ds and the ratio of these ds / tn values is ε, the condition of 0.2 ≦ ε ≦ 0.4 is satisfied.

Further, in order to achieve the seventh object, the cleaning nozzle device of the present invention has a structure in which a nozzle hole is provided in addition to the central axis portion of the nozzle body.

[0022]

In the cleaning nozzle device of the present invention, since the air mixing means is provided inside the movable nozzle, the throat portion and the diffuser portion can be provided. As a result, when the wash water is circulated, the wash water is discharged toward the throat section with the flow velocity increased by the ejector nozzle provided inside the movable nozzle, and the inside of the air mixing section becomes a negative pressure state, and the air is introduced from the air intake port. Is mixed in by suction.
Further, since the pressure is restored in the process of passing through the throat section and the diffuser section, the negative pressure level in the air mixing section is more effectively reduced, the air is suctioned and mixed more effectively, and the air containing uniform and fine bubbles is more effectively reduced. It becomes a liquid two-layer flow and is ejected from the nozzle body. As a result, it is possible to obtain an appropriate feeling of washing and a very soft feeling that does not irritate the delicate female part during bidet washing. 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, in the cleaning nozzle device according to the present invention, the value of the area ratio α between the cross-sectional area S ₁ of the ejector nozzle and the cross-sectional area S ₂ of the throat portion in the air mixing means is set within a predetermined range so that the air suction characteristic becomes the highest. Since it is set, the amount of sucked air can be increased, and a cleaning jet that can more effectively obtain a soft cleaning feeling can be realized. Further, in the cleaning nozzle device according to the present invention, not only the area ratio α but also the value of the ratio β of the inner diameter e of the throat portion and the distance L ₁ from the end face of the ejector outlet to the inlet of the throat portion is set so that the air suction characteristic is improved. Since it is set within the range of
Furthermore, the amount of sucked air can be increased, and a cleaning jet that can more effectively obtain a soft cleaning feeling can be realized.

Further, in the cleaning nozzle device of the present invention, not only the area ratio α but also the value of the ratio δ of the inner diameter e of the throat portion and the length L ₂ of the throat portion is within a predetermined range so that the air suction characteristic is improved. Since it is set to, it is possible to further increase the amount of suctioned air and to realize a cleaning jet flow that more effectively provides a soft cleaning feeling.

Further, the cleaning nozzle device according to the present invention is
Since the maximum pitches Pm and Pn in the front-rear direction and the left-right direction of the plurality of nozzle holes provided in the nozzle body are set within predetermined ranges, respectively, a jet flow capable of cleaning a wide range suitable for cleaning a female local area is realized. it can. Therefore, it is possible to wash the entire female part without moving the body.

Further, in the cleaning nozzle device according to the present invention, the ratio ε between the thickness tn of the discharge portion of the nozzle hole and the nozzle hole diameter ds is set in the optimum range, so that when the cleaning water is ejected from the nozzle hole. The straightening effect is improved, and each jet stream is jetted as a straight water stream without being disturbed. Therefore, the respective water streams do not contact and interfere with each other, and the scattering of the cleaning water to the unnecessary portion can be reduced, so that a refreshing cleaning feeling like a shower can be obtained.

Further, in the cleaning nozzle device of the present invention, since the nozzle hole is provided in the portion other than the central axis portion of the nozzle body, the jetted water does not directly hit the center of the local portion. As a result, it is possible to wash the delicate vaginal opening without stimulating, especially during bidet washing. Further, it is possible to prevent the wash water from entering the vaginal opening.

[0027]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a sectional view of a cleaning nozzle device showing an embodiment of the present invention, and FIG. 2 is a partial sectional view of an aeration unit. FIG. 3 is a top view of the nozzle tip portion and a projection view of the jetted water cleaning range, and FIG. 4 is a cross-sectional view and an explanatory view showing the jet flow expansion.

In FIG. 1, reference numeral 7 is a pump for supplying washing water, and the pump 7 uses a motor 8 as a driving means. Reference numeral 9 denotes a hot water tank that heats the supplied wash water to a predetermined temperature and stores the hot water. Reference numeral 10 is a supply path for supplying the cleaning water to the nozzle cylinder 11. Numeral 12 is a movable nozzle, which is located in the nozzle cylinder 11 and is driven to move forward by receiving the supplied water pressure of the cleaning water, stopped at the human body local position, and passed through the water supply passage 13 to provide the cleaning water at one end. It is ejected from the nozzle hole 15 of the nozzle body 14 toward the human body part. Here, an ejector nozzle 16 for increasing the flow rate of the cleaning water, an air intake 17 for taking in air into the movable nozzle 12, and an air for mixing the sucked air with the cleaning water are provided at one end on the upstream side of the movable nozzle 12. The mixing unit 18 and an air mixing unit 21 including a throat unit 19 and a diffuser unit 20 for effectively sucking air and mixing the air into the cleaning water are provided. Here, as shown in FIG. 2, the dimensions of each part of the aeration unit 21 are defined as follows.

(1) The inner diameter of the ejector nozzle is de (2) The inner diameter of the throat portion is e (3) The distance from the ejector nozzle outlet end face to the throat inlet is L ₁ (4) The throat portion length is L ₂ or As shown in FIG. 3, the maximum pitch in the front-rear direction of the nozzle holes 15 with respect to the forward / backward direction of the nozzle body 14 is defined as Pm, and the maximum pitch in the left-right direction is defined as Pn.

Further, as shown in FIG. 4, the thickness of the discharge portion of the nozzle hole is defined as tn, the nozzle hole diameter is defined as ds, and the flow diameter on the surface H to be cleaned is defined as ds'.

Further, as shown in FIG. 3, the nozzle hole 14 is provided in a portion other than the central axis portion of the nozzle body 15.

In the above structure, the operation of this embodiment will be described below.
The operation will be described. Motor 8 by washing water request signal
When the rotation of the
After being supplied to the nozzle cylinder 11, the water pressure of the cleaning water acts on the end surface of the movable nozzle 12 to move the movable nozzle 12 forward and stop when the nozzle hole 15 reaches the human body local cleaning position. The cleaning water is discharged toward the throat portion 19 in a state where the flow velocity is increased by the ejector nozzle 16 provided inside the movable nozzle 12, the inside of the air mixing portion 18 becomes a negative pressure state, and the air is sucked in from the air inlet. To be done.
Further, since the pressure is recovered in the process of passing through the throat portion 19 and the diffuser portion 20, the negative pressure level of the air mixing portion 18 is more effectively reduced, and the air is suctioned and mixed more effectively, and the air is uniformly and finely mixed. A gas-liquid two-layer flow containing bubbles is ejected from a nozzle hole 15 provided in the nozzle body 14. As a result, it is possible to obtain an appropriate feeling of washing and a very soft feeling that does not irritate the delicate female part during bidet washing. 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.

FIG. 5 shows the cross-sectional area S _{1 of the} ejector nozzle 10.
And the ratio α of the sectional area S ₂ of the throat portion 19 to 0.8 l / mi
The relationship with the ratio of the amount of air mixed in the wash water in the flow rate range of n or more is shown. In the delicate cleaning of the female part, it is necessary to improve the soft feeling and reduce the scattering even in a large flow rate range of 0.8 l / min or more, and thus it is necessary to increase the ratio of the amount of air sucked and mixed. Therefore, when changing the ratio of the amount of air, when the amount of air was about 7% of the flow rate of the washing water, a comfortable feeling of washing was obtained. Therefore, in the range of α, 7% or more of air was mixed in the washing water. It has been decided to set 1.5 ≦ α ≦ 4.5.

FIG. 6 shows the relationship between the inner diameter e of the throat portion 19, the ratio β of the distance L ₁ from the outlet end face of the ejector nozzle 16 to the inlet of the throat portion 19 and the ratio of the amount of air mixed in the wash water. There is. The range of β is set to 1 ≦ β ≦ 3 for the same reason as above.

FIG. 7 is a diagram showing the relationship between the ratio δ of the inner diameter e of the throat portion 19 and the length L ₂ of the throat portion 19 and the ratio of the amount of air mixed in the wash water. For the same reason as above, the range of δ is set to 1.6 ≦ δ ≦ 7.

By optimizing the air mixing means in this way, the air mixing ratio can be improved.
As a result, it is possible to realize a cleaning jet that more effectively gives a soft cleaning feeling.

Further 8, the maximum pitch P _x of the nozzle holes 15 in the X-axis, taking the maximum pitch P _Y in the cleaning area in the Y-axis, with the maximum pitch value and cleaning range of the maximum pitch of the nozzle holes 15 The correlation is shown in the front-back direction and the left-right direction. As a result of the sensation experiment, it was found that the area of the female local area that the woman wants to wash is the entire area near the vagina and urethra. Therefore, as a result of examining the standard size of the local area, about 20 to 25 in the front-back direction.
It has been found that it is necessary to have a cleaning range of 8 mm to 8 mm in the horizontal direction. From this result, the range of the required maximum pitches Pm and Pn of the nozzle holes 15 is 10 ≦.
It was decided to set Pm ≦ 18 and 3 ≦ Pn ≦ 5. By optimizing the maximum pitch of the nozzle holes 15 in this manner, it is possible to realize a jet flow capable of cleaning a wide range, which is suitable for cleaning the female part. Therefore, when the bidet is washed, the entire vagina and urethra can be washed, and the entire local area can be washed without moving the body.

Further, FIG. 9 shows the thickness t of the discharge portion of the nozzle hole.
The relationship between the ratio ε of n and the nozzle hole diameter ds and the jet expansion ratio F is shown. Here, the jet flow expansion rate F is defined by the equation shown in Formula 1 where the jet flow diameter at the time of jetting is ds and the jet flow diameter on the surface H to be cleaned is ds' as shown in FIG.

(Equation 1) F = (ds′−ds) / ds × 100 [%] When the jet expansion rate F is 10% or more, the jets are dispersed and interfere with the adjacent jets, and scattering to the body is increased. Therefore, a refreshing feeling of washing cannot be obtained. Therefore, the range of ε is set to 0.2 ≦ ε ≦ 0.4 where the jet expansion rate F is 10% or less. As described above, since the rectifying effect when the cleaning water is ejected from the nozzle hole 15 is improved, the jet water is ejected as a straight water flow without being disturbed by suppressing the dispersion of the jet flows. For this reason, the respective water streams do not contact and interfere with each other, and the scattering of the cleaning water to unnecessary portions can be reduced, so that a refreshing cleaning feeling like a shower can be obtained.

Further, since the nozzle hole 15 is provided in a portion other than the central axis portion of the nozzle body 14, the jetted water does not directly hit the center of the local portion. As a result, it is possible to clean the delicate vaginal opening without stimulating during bidet cleaning. In addition, since it is possible to prevent the wash water from entering the vagina, the self-cleaning action in the vagina is not hindered.

[0041]

As described above in detail, in the cleaning nozzle device of the present invention, the throat portion and the diffuser portion can be provided because the air mixing means is provided inside the movable nozzle. Therefore, the air can be effectively sucked, and a gas-liquid two-layer flow containing bubbles with uniform and fine particle size is discharged from the cleaning nozzle.
As a result, it is possible to obtain an appropriate feeling of washing and a very soft feeling that does not irritate the delicate female part during bidet washing. Further, since the bubble particle size does not become large, the popping noise of air at the time of ejection from the cleaning nozzle can be reduced and the scattering of cleaning water can be reduced. Further, since the air is mixed in at the position where the movable nozzle has advanced, the air is not mixed during the advance of the movable nozzle, and it is possible to prevent the scattering of cleaning water and the popping noise of the air, and the parts other than the part to be cleaned get wet. Will disappear.

Further, in the cleaning nozzle device of the present invention, the diameter and length of the ejector, the air mixing portion, the throat portion and the diffuser portion, which are the air mixing means, are effectively sucked by the air.
Since it is set in the optimum range in which it can be mixed, it is possible to realize a cleaning jet that can more effectively and softly clean.

Further, in the cleaning nozzle device of the present invention, since the plurality of nozzle holes provided in the nozzle body are arranged so as to realize a wide range of cleaning suitable for the female part, the body is moved during bidet cleaning. It is possible to clean the entire local area without any need.

Further, in the cleaning nozzle device of the present invention, in order to enhance the rectifying effect of the water flow ejected from the plurality of nozzle holes,
Since the ratio between the nozzle hole diameter and the thickness of the discharge portion is optimized, each jet stream is jetted as a straight water stream without being disturbed. As a result, the respective water streams do not contact and interfere with each other, and the scattering of cleaning water to unnecessary portions can be reduced, so that a refreshing cleaning feeling like a shower can be obtained.

Further, in the cleaning nozzle device of the present invention, the nozzle hole is arranged so that the water flow ejected from the nozzle hole does not directly hit the center of the local part, so that the delicate vaginal opening is stimulated during the bidet cleaning. Can be washed without. In addition, since the wash water can be prevented from entering the vagina, the self-cleaning action inside the vaginal opening is not hindered.

[Brief description of drawings]

FIG. 1 is a view showing a cleaning nozzle device showing an embodiment of the present invention.

FIG. 2 is a sectional view of the main part of the cleaning nozzle.

FIG. 3 is a top view of the nozzle body of the same cleaning nozzle and a projected view of the cleaning range of jet water.

FIG. 4 is a cross-sectional view of a nozzle body of the cleaning nozzle and an explanatory view showing expansion of a jet flow.

FIG. 5 is a characteristic diagram showing the relationship between the ratio α of the cross-sectional area of the ejector nozzle and the cross-sectional area of the throat portion and the amount of air.

FIG. 6 is a characteristic diagram showing the relationship between the air amount and the ratio β of the inner diameter of the throat part to the distance from the ejector nozzle outlet end face to the throat part inlet.

FIG. 7 is a characteristic diagram showing the relationship between the air amount and the ratio δ of the inner diameter of the throat portion and the length of the throat portion.

FIG. 8 is a correlation diagram showing the relationship between the maximum nozzle hole pitch and the cleaning range.

FIG. 9 is a characteristic diagram showing the relationship between the jet expansion ratio F and the ratio ε of the nozzle hole discharge thickness to the nozzle hole diameter.

FIG. 10 is a sectional view of a conventional cleaning nozzle.

[Explanation of symbols]

11 Nozzle Cylinder 12 Movable Nozzle 14 Nozzle Body 15 Nozzle Hole 16 Ejector Nozzle 17 Air Inlet 18 Air Mixing Part 19 Throat 20 Diffuser S ₁ Cross Section of Ejector Nozzle S ₂ Cross Section of Throat e Inner Diameter of Throat L ₁ Distance from ejector nozzle outlet end face to throat inlet L ₂ Length of throat Pm Maximum pitch in forward / backward direction of nozzle body Pn Maximum horizontal pitch in forward / backward direction of nozzle body tn Thickness of discharge part of nozzle hole Ds Nozzle hole diameter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideki Ohno 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (7)

[Claims] 1. A movable nozzle having a nozzle body for ejecting cleaning water at one end, a nozzle cylinder having the movable nozzle incorporated therein so as to move forward and backward, and a nozzle cylinder and a movable nozzle body provided with the movable nozzle body. An air intake for taking in air, an air mixing unit provided in the movable nozzle for mixing the cleaning water supplied from the nozzle cylinder and the air sucked from the air intake, and the nozzle cylinder and air mixing. An ejector nozzle provided between the air mixing portion and the nozzle body, and a throat portion and a diffuser portion provided between the air mixing portion and the nozzle body, and the air intake port of the nozzle cylinder and the movable nozzle at the advance completion position of the movable nozzle. A cleaning nozzle device that communicates with each other to mix cleaning water and air. 2. When the cross-sectional area of the ejector nozzle is S ₁ , the cross-sectional area of the throat portion is S ₂ , and the area ratio S ₂ / S ₁ is α, the condition of 1.5 ≦ α ≦ 4.5 is satisfied. The cleaning nozzle device according to claim 1, which satisfies the above condition. 3. When the inner diameter of the throat portion is e, the distance from the outlet end face of the ejector nozzle provided in the air mixing portion to the inlet of the throat portion is L _1, and the ratio L ₁ / e of these is β, 1 The cleaning nozzle device having the configuration according to claim 1 or 2, which satisfies the condition of ≦ β ≦ 3. 4. When the inner diameter of the throat portion is e, the length of the throat portion is L ₂ and the ratio L ₂ / e of these is δ, the condition of 1.6 ≦ δ ≦ 7 is satisfied. And a cleaning nozzle device having the configuration described in 2. 5. A nozzle body is provided with a plurality of nozzle holes, and the maximum pitch in the front-back direction is P with respect to the forward / backward direction of the nozzle body.
The cleaning nozzle device according to claim 1, wherein the following conditions are satisfied: 10 ≦ Pm ≦ 18 and 3 ≦ Pn ≦ 5, where m is the maximum pitch in the left-right direction. 6. When the thickness of the discharge portion of the nozzle hole is tn, the nozzle hole diameter is ds, and the ratio ds / tn of these is ε, the condition of 0.2 ≦ ε ≦ 0.4 is satisfied. Item 5. The cleaning nozzle device according to item 5. 7. A cleaning nozzle device which realizes a hollow jet by providing a nozzle hole in a portion other than the central axis portion of the nozzle body.