JP2000038757A - Private part washing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain secondary flow of wash water and raise application feeling by smoothly delivering wash water. SOLUTION: A private part washing apparatus is provided with a nozzle discharging opening 7 for discharging wash water outside and a connection passage 12a for supplying wash water to the nozzle discharging opening 7. The axis of the opening 12b of the connection passage 12a and that of the nozzle discharge opening 7 are dislocated with each other, and when wash water from the opening 12b flows into the nozzle discharging opening 7, flow toward the revolving direction is checked by a plate 14 and corrected to flow toward the axial direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning a local part of a human body suitable for use in a Western-style toilet or the like, and more particularly to a technique for smoothly discharging cleaning water.

[0002]

2. Description of the Related Art Conventionally, Western-style toilets provided with a human body local cleaning device for cleaning by discharging cleaning water to a local part of a human body have been widely used. Further, in recent years, a human body local cleaning apparatus has been provided which mixes air bubbles into cleaning water to increase the cleaning power to give a soft cleaning feeling and also saves water. Japanese Patent Application Laid-Open No. Sho 56-70338 discloses such a human body local cleaning device.
JP-A-5-33377, JP-A-10-18391
Many proposals have been made for the issue.

[0003]

By the way, in the conventional human body local cleaning apparatus, since the cleaning water or the mixed liquid of the cleaning water and the air follows a complicated path to reach the nozzle discharge port, the flow in the swirling direction or the like is reduced. Wash water having an undesirable flow may be discharged from the nozzle discharge port, and as a result,
There is a danger that use may be hindered due to splashing of washing water. However, in the above-described conventional technology, no consideration has been given to controlling the flow of the cleaning water in the apparatus. Therefore, the present invention does not cause a flow in the swirling direction in the cleaning water up to the nozzle discharge port,
It is an object of the present invention to provide a human body local cleaning device capable of smoothly discharging cleaning water.

[0004]

In order to solve the above-mentioned problems, a human body local cleaning apparatus according to the present invention provides a nozzle discharge port for discharging cleaning water to the outside, and supplies the cleaning water to the nozzle discharge port. In a human body local cleaning device having a flow path,
It is characterized in that the flow path and / or the nozzle discharge port is provided with a secondary flow suppressing means for suppressing a secondary flow of the washing water.

[0005] For example, in a human body local cleaning apparatus provided in a Western style toilet, a flow path of cleaning water along an axial direction is provided inside a substantially horizontal rod-shaped nozzle body. Further, a nozzle head having a discharge port for washing water is attached to a tip end portion of the nozzle body, and a flow path reaching the nozzle discharge port of the nozzle head is bent upward with respect to a flow path of the nozzle body, and Are often offset from each other in the lateral direction. Such a configuration is a typical example of causing a flow in the swirling direction (hereinafter, referred to as a secondary flow) in the cleaning water. In other words, in the above-described configuration, a difference occurs in the distance to the other flow path depending on the position of the flow path in the circumferential direction. The next flow. However, according to the study of the present inventors, even in the case of a straight flow path, if a slight displacement of the flow path occurs due to a manufacturing error or the like in the middle of the flow path, the secondary flow is It has been confirmed that this occurs and affects the discharge from the nozzle discharge port. Therefore, in the present invention, there is a problem not only in the case where the displacement of the axis of the flow path is caused by the bent and displaced flow path, but also in the case where it is caused by a dimensional error in manufacturing.

In the apparatus for cleaning a human body part according to the present invention, the flow path and / or the nozzle discharge port are provided with the secondary flow suppressing means for suppressing the secondary flow of the cleaning water. At this time, the flow of the cleaning water becomes normal, and the cleaning water is discharged smoothly. Here, when the displacement of the axis of the flow path is considerably upstream from the nozzle outlet, the secondary flow generated there disappears before reaching the nozzle outlet. Therefore, the present invention is particularly problematic when the axial displacement of the flow path exists near the nozzle discharge port,
In this case, the secondary flow suppressing means is naturally arranged near the nozzle discharge port.

[0007] It is preferable that the secondary flow suppressing means includes pressure recovery means for directing the velocity in the turning direction in the flow path toward the flow path. FIG. 6 shows an example of the pressure recovery means. When the washing water flows into the spiral pressure recovery means Q while rotating from the pipe P, it is discharged from an outlet Ex provided on the outer periphery of the pressure recovery means Q. . At this time, the swirling direction of the secondary flow becomes the flowing direction from the outlet Ex as it is, so that the flow of the washing water can be corrected without causing pressure loss.

In order to reduce the pressure loss while suppressing the secondary flow of the washing water, the secondary flow suppressing means is provided at a predetermined angle in the axial direction so as to gradually convert the rotating speed of the washing water into a static pressure. It is good to arrange. For example, it is conceivable that the secondary flow suppressing means is constituted by a plate extending along the axial direction in the flow path. In this case, the plate is configured to deflect the secondary flow in the axial direction of the flow path. So that it can be inclined with respect to the flow direction of the secondary flow. FIG. 7 shows an example thereof. In the bent portion in the pipeline P, a swirling flow can be generated even by a delicate asymmetry of the shape or Coriolis force due to the rotation of the earth. It is desirable to dispose a secondary flow suppressing means in the second position. In FIG.
A plate T extending in the axial direction is arranged, and the plate T is arranged to be slightly inclined in the axial direction along the turning direction. Thereby, the pressure loss caused by the secondary flow colliding with the plate can be reduced. For similar purposes,
The plate can also be formed helically so as to divert the direction of the secondary flow in the axial direction of the flow path. In addition, when the turning direction of the secondary flow is not determined in advance, it is desirable that the plate be substantially parallel to the axial direction.

The plates can be provided at a plurality of locations toward the downstream side, or the plurality of plates can be provided separately from each other or continuously. In this case, it is preferable from the viewpoint of reducing the pressure loss that the angle between the plate and the axis becomes smaller toward the downstream side. That is, with such a configuration, the secondary flow does not go against the flow of the secondary flow in the upstream portion of the plate, and the secondary flow is gradually corrected to flow in the axial direction toward the downstream side. FIG. 8 shows an example of this, in which a spiral plate T is disposed on the inner periphery of the pipe P, and a spiral in the flow direction is formed in order to gradually reduce the turning speed and efficiently convert the turning speed to static pressure. Is set so as to gradually decrease toward the downstream side.

[0010] The plate may be provided to project inward from the inner wall of the conduit as described above, or may be erected from the inner wall to the opposite inner wall. 9A and 9B show an example thereof, FIG. 9A shows an example in which a plate T is provided so as to form a cross on the inner wall of the pipeline P, and FIG. 9B shows a diameter line of the pipeline P. This is an example in which T is provided. Also in these examples, the plate T can be provided in a spiral shape, and further, the twist angle of the spiral can be reduced toward the downstream side.

Further, the secondary flow suppressing means may be constituted by a flow path in which the inner peripheral surface of the flow path is formed to have a non-circular axial cross section. Specifically, as shown in FIG. 10, the flow of the secondary flow is also prevented by making the cross-sectional shape of the flow path into an ellipse, a triangle, a quadrangle, a polygon such as a hexagon, and as a result, the flow is It is corrected in the direction. The cross-sectional shape of the flow channel is not limited as long as it is non-circular, and any shape such as a star shape, a heart shape, and a shape in which a plurality of circles are overlapped can be applied.

From the viewpoint of reducing the pressure loss of the washing water,
The flow path formed to have a non-circular axial cross section can be formed spirally in the axial direction of the flow path so as to deflect the direction of the secondary flow in the axial direction of the flow path. Further, also in this case, the flow path formed to have a non-circular cross section can be formed so that the twist angle decreases toward the downstream side.

[0013]

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic diagram showing the entire configuration of the human body local cleaning apparatus of the embodiment. In this overall configuration, the wash water is supplied from the tap water to the heat exchanger 24 via the electromagnetic shutoff valve 25 having a pressure adjusting function. In the heat exchanger 24, a heater 22 for raising the water temperature to a comfortable temperature for the user is provided.
A first water level sensor 27 and a second water level sensor 23 are provided for detecting the water level in the inside and preventing empty cooking or the like. Further, a temperature sensor 26 for measuring the water temperature in the heat exchanger 24 is provided.

The washing water raised to an appropriate temperature by the heat exchanger 24 passes through the air discharge valve 30 to the water flow switching unit 1.
It is led to 7. In the water flow path switching unit 17, the user operates the operation unit 16 to select a water discharge mode for cleaning the buttocks (discharge indicated by P in FIG. 1) or bidet cleaning (discharge indicated by Q in FIG. 1). And the nozzle body 18
The nozzle head 19 has a structure having independent pipe systems so that it can be used for buttocks washing and bidet washing. In addition, in the operation unit 16, a water discharge amount, a water force, and the like are selected in addition to the water discharge mode, and the adjusted water is supplied to the nozzle body 18 via the water flow path switching unit 17. On the other hand, the air is pressurized by the air pump 21 and
The flow is guided to 0, and the flow path is switched according to the operation of the user. The cleaning water and the air are supplied to the nozzle body 18, respectively, and the nozzle head 1 detachably mounted at the tip thereof.
9 mixed.

The power supply section 29 is an operation section for the main power supply.
Normally, the use is automatically detected by the use detecting means 15 and the standby state is released. The flow path switching unit 17 and the air flow path switching unit 20 are each driven by a motor. However, since the operations of both are performed in synchronization, they may be driven by one motor. In particular, when uniaxial driving is performed for motor rotation, the number of motors used can be reduced, and it is also suitable for miniaturization. The air pump 21 is a rolling pump, but a vane pump,
A rotary pump, a linear pump, or the like may be used.

The heat exchanger 24 is a hot water storage type with little change in temperature and unevenness in temperature control. good. The semi-hot water storage type has a small hot water storage portion and a large heater capacity as compared with the conventional hot water storage type heat exchanger, and therefore has a high temperature rising capability and low temperature unevenness as in the instantaneous type. In the semi-hot water storage type, the small hot water storage part installed downstream of the heat exchanger functions as a temperature buffer with a fixed washing water residence time to reduce temperature unevenness, so it is excellent in energy saving effect and usability It is also preferable because the improvement of the size can be achieved.

By adjusting the rotation speed of the air pump 21, the air entrapment rate can be changed, thereby making it possible to control the feeling of irritation and water saving. Generally, if the air mixing ratio is high, the feeling of irritation is strong, and if the air mixing ratio is low, the sensation becomes soft. Therefore, the adjustment can be made according to the user's preference. For this purpose, the user can adjust the rotation speed of the air pump 21 with the operation unit 16. In this case, the control of the air mixing rate can be performed independently of the water pressure adjustment.

Next, referring to FIG. 2 to FIG.
8 and the nozzle head 19 will be described in detail. As shown in FIG. 2, a manifold 31 is attached to the base of the nozzle body 18, and three joints 32 are attached to the manifold 31 in two rows in one row. The tubes connected to the air flow switching unit 20 are connected to the joints 32 in the upper row, and the tubes connected to the water flow switching unit 17 are connected to the joint 32 in the lower row. The joints 32 at the ends of the upper and lower rows are connected to the nozzle discharge ports 6 for bidet cleaning by tubes provided inside the nozzle body 18, and the other joints 32 of the upper and lower rows are connected to the nozzle discharge ports for buttocks cleaning. The outlet 7 is connected via a tube. For example, strong pressure water and air are supplied to the end of the buttocks washing joint 32,
The central one is supplied with weak water and air. The strength of the washing water is selected by a user operating the operation unit 16.

FIG. 3 shows details of the nozzle head 19 in FIG.
3 is a cross-sectional view taken along line AA of FIG. The tubes connected to the joint 32 are connected to the air pipe 11 and the water pipe 12, respectively. The two air ducts 11 for buttocks washing merge at the communication flow path 11 a, branch off at the end thereof, and communicate with the two air mixing chambers 8. The two water pipes 12 for washing the buttocks are joined at a communication flow path (flow path) 12a, branched at the end thereof, and communicated with the lower ends of the two air mixing chambers 8. A cylindrical porous body 8 a is inserted into the air mixing chamber 8. The porous body 8a is formed by heating and molding synthetic resin particles of, for example, ultra-high molecular weight polyethylene, and the air that has passed through from the surroundings to the inside becomes fine bubbles and is mixed with water.

Although not shown in FIG. 3, an air mixing chamber for cleaning bidet is provided at the center of the tip of the nozzle head 19, and a porous body is inserted therein. The air pipe 11 for cleaning bidet is in communication with the air mixing chamber, and the water pipe 12 for cleaning bidet is in communication with the lower end of the air mixing chamber. In the figure, reference numeral 9 denotes an upper lid, which locks the porous body 8 a in the air mixing chamber 8.
The upper lid 9 is formed with a nozzle discharge port 7 coaxial with a hollow part (a part of the nozzle discharge port) of the porous body 8a, and discharges a washing water for buttock cleaning. The upper lid 9 is formed with a nozzle discharge port 6 coaxial with a hollow portion of the bidet cleaning porous body. Reference numeral 13 in the figure denotes a lower lid, which closes the lower surface of the nozzle head 19 in a liquid-tight manner.

The nozzle head 19 is provided with a secondary flow suppressing means for preventing the cleaning water from flowing in the circumferential direction and correcting the cleaning water in the axial direction. FIG. 4 is a bottom view of the nozzle head 19 with the lower lid 13 removed. Symbol 1 in the figure
Reference numeral 2b denotes an opening of the water communication flow passage 12a, through which water flows into the nozzle discharge port 7. As shown in FIG. 4, the axis of the opening 12 b is shifted outward with respect to the axis of the nozzle outlet 7. For this reason, the distance from the opening 12b to the nozzle outlet 7 is farther outside than inside. For this reason, the flow velocity of the water that has exited the opening 12b is higher on the outside than on the inside. As a result, a secondary flow as shown by an arrow in FIG.

Therefore, in this embodiment, a plate (secondary flow suppressing means) 14 is arranged at the entrance of the nozzle discharge port 7 along the axis of the nozzle discharge port 7. The plate 14 is the lower lid 1
Although it is easy to fix to the main body 3, it can also be fixed to the opposite main body. Due to the presence of the plate 14, the flow of water reaching the nozzle outlet 7 is corrected in the axial direction, and bubbles are mixed around the water introduced into the porous body 8a. At this time, since the secondary flow is reduced or eliminated, the bubbles do not aggregate due to the centrifugal force, and therefore, the gas is smoothly discharged from the discharge port 7. Further, in this embodiment, since the secondary flow can be corrected with an extremely simple configuration, there is an advantage that the manufacturing cost is hardly affected.

Next, FIG. 5B shows a modification of the above embodiment. In this example, the plate 14 is inclined in the direction of the secondary flow (indicated by the arrow in the figure). Thereby, the pressure loss caused by the secondary flow colliding with the plate 14 can be reduced. For the same purpose, the plate 14 can be formed in a spiral shape along the axis of the nozzle discharge port 7. Further, another plate can be arranged at the lower end of the nozzle discharge port 7 (the lower end of the hollow portion of the porous body 8a). In this case, it is preferable from the viewpoint of reducing the pressure loss that the angle between the plate and the axis becomes smaller toward the downstream side.

Furthermore, it is also effective to form the cross section of the inner peripheral portion at the lower end of the nozzle discharge port 7 into a polygon, a star, or any other non-circular shape. Also in this case, such a flow path can be formed in a spiral shape along the axis of the nozzle discharge port 7, and further, the twist angle can be reduced toward the downstream side.

[0025]

As described above, according to the human body cleaning apparatus of the present invention, the secondary flow of the cleaning water can be suppressed by the secondary flow suppressing means, so that the cleaning water can be smoothly discharged and used. The effect that a feeling can be raised is acquired.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an entire configuration of a human body local cleaning apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of a nozzle body and a nozzle head according to the present embodiment.

FIG. 3 is a cross-sectional view of the nozzle head according to the embodiment taken along line AA in FIG. 2;

FIG. 4 is a bottom view of the nozzle head according to the embodiment with a lower lid removed.

5A is an enlarged view of a main part of the nozzle head according to the present embodiment, and FIG. 5B is a view taken in the direction of arrow B in FIG.

FIG. 6A is a sectional view taken along an axis of the pressure recovery means,
(B) is sectional drawing seen from B direction of (a).

7A is a cross-sectional view illustrating an example in which an inclined plate is used as a secondary flow suppressing unit, FIG. 7B is a view in the direction of arrow B in FIG.
(C) is a view in the direction of arrow C in (a).

8A is a cross-sectional view illustrating an example in which a spiral plate is used as a secondary flow suppressing unit, and FIG. 8B is a view in the direction of arrow B in FIG.

FIG. 9 is an axial sectional view showing another example of the plate.

FIG. 10 is an axial sectional view showing an example of a non-circular flow path.

[Explanation of symbols]

6: nozzle discharge port (flow path), 7: nozzle discharge port (flow path), 12a: communication flow path (flow path), 14: plate (secondary flow suppressing means), P: pipe (flow path), Q: Pressure recovery means, T
... plate.

Continuation of the front page (72) Inventor Shinsuke Matsuo 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-city, Fukuoka Prefecture Inside Totoki Kiki Co., Ltd. (72) Kozo Fujita 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture No. 1 Toto Kiki Co., Ltd. (72) Minoru Sato 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka Prefecture Toko Kiki Co., Ltd. (72) Takahiro Ohashi Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka 2-chome No. 1-1 Totoki Kiki Co., Ltd. F-term (reference) 2D038 JA00 JB03 JF03 KA22

Claims (10)

[Claims] 1. A human body local cleaning apparatus having a nozzle discharge port for discharging cleaning water to the outside and a flow path for supplying cleaning water to the nozzle discharge port, wherein the flow path and / or the nozzle discharge port includes: A human body local cleaning device comprising a secondary flow suppressing means for suppressing a secondary flow of the washing water. 2. The apparatus according to claim 1, wherein the secondary flow suppressing unit is disposed near the nozzle discharge port.
2. A human body local cleaning device according to claim 1. 3. The human body local cleaning apparatus according to claim 1, wherein the secondary flow suppressing unit includes a pressure recovery unit that directs the rotational speed in the flow channel toward the flow channel. 4. The apparatus according to claim 1, wherein the secondary flow suppressing means is disposed at a predetermined angle in the axial direction so as to gradually convert the rotational speed of the washing water into a static pressure. 4. The human body local cleaning device according to any one of 3. 5. The human body local cleaning device according to claim 1, wherein the secondary flow suppressing means is a plate extending in an axial direction in the flow path. . 6. The plate has a spiral shape so as to deflect the flow of the washing water in the circumferential direction, which may occur as a result of the displacement of the axis of the flow path, in the axial direction of the flow path. The apparatus for cleaning a human body part according to claim 5, characterized in that: 7. The plate according to claim 5, wherein the plate is provided at a plurality of locations or continuously in a downstream direction, and an angle between the plate and the axis decreases toward the downstream side. 2. A human body local cleaning device according to claim 1. 8. The human body part cleaning apparatus according to claim 1, wherein the secondary flow suppressing means is a flow path in which an inner peripheral surface of the flow path is formed to have a non-circular axial cross section. 9. The flow path formed in a non-circular shape in the axial cross section so as to deflect the flow of the washing water in the swirling direction, which may occur as a result of displacement of the axis of the flow path, in the axial direction of the flow path. 9. The apparatus according to claim 8, wherein the apparatus has a spiral shape in the axial direction of the flow path. 10. The non-circular flow path formed in the axial cross section,
The body part cleaning apparatus according to claim 9, wherein the torsion angle becomes smaller toward the downstream side.