JP3075000B2 - Sanitary washing equipment - Google Patents

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 a sanitary washing toilet seat for washing a local part of a human body after stool, and more particularly to a type for mixing air bubbles in washing water. Related to a sanitary washing device.

[0002]

2. Description of the Related Art As this kind of washing apparatus for washing a local part of a human body, there is an apparatus for washing hot spots intensively by jetting hot water from a washing nozzle provided with a single or a plurality of nozzle holes. Is a continuous steady flow, which may give a user discomfort due to a strong stimulus. For this reason, a cleaning device disclosed in Japanese Patent Publication No. 58-13688 has been known as a device that can obtain a soft feeling by mixing bubbles in the cleaning water. In this device, an air suction unit for mixing air is provided near the ejection nozzle, and the amount of air depends on the ejection speed or the ejection amount of the cleaning water ejected from the nozzle. Therefore, the amount of air that can be mixed was naturally limited.

For this reason, in recent years, there has been proposed an apparatus in which air is forcibly mixed into cleaning water as shown in FIGS. In FIG. 1, reference numeral 1 denotes a toilet bowl, 2 denotes a sanitary washing toilet seat, and a toilet seat 3, a toilet lid 4, a main body 5 having a cleaning device, and a cleaning nozzle 7 provided to protrude into the toilet 1 to clean a local part of a human body 6. Is provided. FIG. 6 shows the structure of this sanitary washing device.

The cleaning water is supplied by a pump 8, and 9 is a supply path of the cleaning water. The cleaning water mixed with air is supplied by an air pump 10 and an air mixing means 11 provided on the upstream side. At this time, the pump 8 and the air pump 10
Can be adjusted by a washing switch 14 and an air amount adjusting switch 15 which are connected to a washing water control circuit 12 and an air control circuit 13, respectively. 16 is a nozzle cylinder, 17
Reference numeral denotes a movable nozzle, which is configured to be pushed out to the vicinity of the local position by the water pressure of the washing water, and to eject the washing water from the nozzle hole 19 to the local human body through the water supply passage 18.

When the cleaning water mixed with air acts on the supply passage 9 in the above configuration, the movable nozzle 17 is pushed out by water pressure and stops near a local position, and the cleaning water mixed with air bubbles is ejected from the nozzle hole 19. Cleaning of the human body. As a result, sufficient mixed air can be obtained, and the amount of mixed air can be adjusted as desired.

[0006]

However, in the conventional cleaning apparatus as described above, since air is mixed at the upstream side of the nozzle cylinder, individual bubbles interfere with each other during the passage through the nozzle cylinder and the movable nozzle. Each other,
The bubbles become non-uniform. That is, as shown in FIG. 6, bubbles flowing into the nozzle cylinder with a predetermined particle diameter interfere with each other, separate into a gas phase and a liquid phase, and change to a large diameter.
As a result, when spouting from the nozzle hole, there was a problem that a popping sound of air bubbles is generated and the degree of comfort is reduced.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a comfortable sanitary washing device which has a small sound of air bubbles popping out when cleaning water mixed with air bubbles is jetted from a cleaning nozzle. .

[0008]

To achieve the above object, a sanitary washing apparatus according to the present invention comprises a washing water supply means, a driving means for the washing water supply means, and a water supply passage communicating with the washing water supply means. Air supply means, driving means for the air supply means, an air supply path communicating with the air supply means,
The water supply path and the air supply path are connected, and air mixing means for mixing the cleaning water supplied from the cleaning water supply means and the air supplied from the air supply means is provided downstream of the air mixing means. A cleaning nozzle body having a vortex chamber for jetting cleaning water, wherein the flow rate of the cleaning water mixed by the air mixing means is Qw, the flow rate of the air is Qa, and the mixing ratio is Rm.
When Q = Qa / Qw, the mixing ratio Rm is configured to satisfy the range in which the sound of popping bubbles can be reduced, that is, the condition 0.2 <Rm <1.

[0009]

According to the sanitary washing device of the present invention, the flow rate of the washing water is Qw, the flow rate of the air is Qa, and the mixing ratio Rm = Qa.
/ Qw, the air supply means and the air mixing means are provided so that the mixing ratio Rm is 0.2 or more and 1 or less even when the flow rate of the washing water is changed. by mixing the air upstream of the cylinder, air bubbles flowing into the nozzle cylinder interfere with each other, with the large diameter of the bubbles is caused to separate into gas and liquid phases is suppressed, with the vortex chamber Stir the washing water to remove bubbles.
This reduces the size of the air bubbles and reduces the sound of air bubbles popping out of the cleaning nozzle.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 partial sectional view of a nozzle tip for washing an anus, and FIG. 3 is a sectional view of an air mixing means. It is. In the figure, reference numeral 20 denotes cleaning water supply means, and reference numeral 21 denotes a driving means of the cleaning water supply means 20. 22 is an electric heater 2
Hot water storage tank for storing hot water heated by 3; 24
Is a washing water supply path for supplying washing water. Reference numeral 25 denotes an air mixing means communicating with the washing water supply path 24, and has an ejector nozzle 26 and an air suction port 27.

The air mixing means 25 includes an ejector nozzle 26
When the cleaning water passes through the cleaning water, the flow velocity is increased, and when the pressure of the air suction port 27 becomes a negative pressure state, air can be effectively mixed into the cleaning water. Reference numeral 28 denotes a nozzle switching valve, which supplies cleaning water to a first nozzle unit 29 for cleaning an anus or a second nozzle unit 30 for cleaning a local part of a woman according to a user's selection. I do.

The first and second nozzle units 29,
Numerals 30 denote nozzle cylinders 31 communicating with the nozzle switching valve 28, respectively. The nozzle cylinder 31 receives the water pressure of the cleaning water and is driven to advance. The cleaning water stops near the human body part position and passes through the water supply passage 32. It is composed of a movable nozzle body 35 that jets cleaning water from the nozzle holes 34 of the cleaning nozzle bodies 33 and 33a provided at one end toward a human body part.

A cleaning nozzle 3 for cleaning the anus
Numeral 3 denotes an adhering wall 3 provided in the throttle portion 36 and the nozzle hole 34.
It has a pair of vortex chambers 39 and 40 provided on both sides in the flow direction of the jet flow, and constitutes a so-called fluid oscillation element type cleaning nozzle. On the other hand, the cleaning nozzle body 33a
Provides a shower-like jet suitable for local washing of women.

Reference numeral 41 denotes an elastic member,
When 0 stops and the supply of cleaning water stops, the movable nozzle body 35 is moved to the retracted position.

Reference numeral 42 denotes a driving means 21 of the washing water supply means 20.
The compressed air is mixed with the washing water in the air mixing means 25 through the air supply path 43 communicating with the air suction port 27 by the rotation of the driving means 21. You.

Reference numeral 44 denotes the driving means 21 and the nozzle switching valve 2
8 is a cleaning water control circuit for controlling the
Of the washing water supply means 2
0 to supply the washing water and the air supply means 4
2 to generate and supply compressed air.

The flow rate of the washing water mixed in the air mixing means 25 is Qw, the flow rate of the air is Qa, and the mixing ratio R
When m = Qa / Qw, the mixing ratio is set so as to satisfy the condition of 0.2 <Rm <1. This will be described in detail with reference to FIG.

FIG. 4 shows the flow rate Qa of air and the flow rate Qw of washing water.
FIG. 6 is a characteristic diagram showing a relationship between a mixing ratio of the cleaning nozzles and a noise level generated from the cleaning nozzles 33 and 33a during cleaning, that is, a popping sound of bubbles. In the figure, QT _{1 to} QT ₃ are the sum of the washing water and the air flow rate, and the minimum flow rate (QT ₁ ), standard flow rate (QT ₂ ), and maximum flow rate (QT
₃ ) 3 levels are shown. As can be seen from the figure, peaks are observed for each level. This peak indicates that the bubble-mixed washing water ejected from the nozzle hole 34 changes from a continuous flow to an intermittent flow due to an increase in the amount of mixed bubbles, and has the highest noise level. When the mixing ratio increases, that is, when the ratio of air increases and exceeds the peak point, the noise level tends to decrease, but an unpleasant sound is generated. Conversely, when the mixing ratio decreases, that is, the air ratio decreases, and the mixing ratio Rm <0.2, the user cannot feel the soft cleaning feeling, which is an advantage of the bubble-containing cleaning. For this reason, in the present embodiment, the mixing ratio at which the peak of the minimum flow rate (QT ₁ ) required for this type of sanitary washing apparatus does not exceed and the washing water containing bubbles is sensed, that is, Qa / Qw is 0.2 or more and 1 or less. Is set to

In the above configuration, the operation of this embodiment will now be described.
The effect will be described. When the driving means 21 is rotated by the washing water request signal, the washing water supply means 20 starts supplying the washing water, and the washing water stored at a predetermined temperature in the hot water storage tank 22 flows into the ejector nozzle 26, and the flow velocity is increased. Pass through. As a result, the pressure of the air suction port 27 becomes a negative pressure state, and the compressed air supplied from the air supply means 42 is more effectively mixed with the cleaning water and flows into the nozzle cylinder 31.

The water pressure of the bubble-mixed cleaning water flowing into the nozzle cylinder 31 acts on the end face of the movable nozzle body 35 and advances against the force of the elastic member 41, and the nozzle hole 34 reaches the vicinity of the local human body position. The washing is stopped, and the bubble-mixed washing water is jetted toward the human body part to perform washing.

When bubbles are mixed on the upstream side of the cleaning nozzles 33 and 33a, the individual bubbles interfere with each other in the process of passing through the nozzle cylinder 31, and the bubbles become non-uniform. That is, the bubbles flowing into the nozzle cylinder 31 interfere with each other and separate into a gaseous phase and a liquid phase to increase the diameter. In this embodiment, the cleaning is performed by the air mixing means 25 as described above. Since the ratio of water and air is limited to a predetermined range, the increase in the diameter of bubbles is suppressed, the sound of washing water spouting from the nozzle holes 34 is reduced, and a suitable washing feeling obtained by air mixing is maintained. Can be. The driving means of the air supply means 42 is shared with the driving means 21 of the cleaning water supply means 20, which is an essential component of this type of cleaning apparatus. As a result, a dedicated drive source for mixing air is not required, and cost reduction and downsizing of the apparatus can be realized. Since the flow rate of the washing water passing through the air mixing means 25, that is, the flow rate of the washing water is proportional to the amount of air sucked from the air suction port 27, even when the flow rate of the washing water is changed, the flow rate of the washing water and the air is changed. There is an effect that the mixing ratio can be maintained at a predetermined ratio suitable for cleaning.

In the conventional example, the popping sound of the air bubbles can be reduced by adjusting the amount of the mixed air. However, when installed in a public toilet or the like, an unfamiliar user can reduce the popping noise. It is difficult to adjust the amount and perform washing. Furthermore, female users tend to dislike hearing the washing noise outside when using the toilet when going out, such as in public places. In this embodiment, since the washing water control circuit 44 operates the driving device 21 so that the mixing ratio of washing water and air falls within a predetermined range in accordance with the washing state selected by the user, a public toilet is used. For the first time, a user who uses the apparatus for the first time can perform a cleaning operation with a low popping sound and a soft cleaning feeling due to the inclusion of air bubbles.

Further, in this embodiment, since the bubble-containing cleaning water jetted from the nozzle hole 34 and coming into contact with the human body part is the sum of the cleaning water and the bubbles, that is, the air-mixed amount, the amount of the cleaning water to be used can be reduced. . As a result, the size of the hot water storage tank 22 can be reduced, and the continuous hot water supply time can be extended, so that running out of the hot water hardly occurs even when there are a plurality of users.

[0025]

As described above in detail, the sanitary washing apparatus of the present invention has a vortex chamber and a mixing ratio Rm = Qa / Qw of the flow rate Qw of the cleaning water and the flow rate Qa of the air, and the flow rate of the cleaning water. in case of changing also, since the mixing ratio Rm is that configured by providing the air supply means and the air mixing means so as to be 0.2 to 1. when air bubbles are large diameter Ru is suppressed
In both cases, the cleaning water is agitated in the vortex chamber to reduce air bubbles.
As a result, it is possible to reduce the popping sound of bubbles at the time of ejection from the cleaning nozzle. Further, since the amount of air mixed by the air mixing means is proportional to the flow rate of the cleaning water, the mixing ratio of the cleaning water and the air can be maintained at a predetermined ratio suitable for cleaning even when the flow rate of the cleaning water is changed. . Further, since the bubble-containing cleaning water ejected from the nozzle hole is the sum of the cleaning water and the amount of air mixed in, the amount of the cleaning water used can be reduced as compared with the conventional case. As a result, the size of the hot water storage tank can be reduced, and the continuous hot water supply time can be extended, so that running out of the hot water hardly occurs even when a plurality of users are continuous.

[Brief description of the drawings]

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

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

FIG. 3 is a sectional view of the air mixing means.

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 sectional view of a conventional cleaning device.

FIG. 6 is a configuration diagram of a conventional cleaning device.

[Explanation of symbols]

 Reference Signs List 20 cleaning water supply means 21 driving means 24 cleaning water supply path 25 air mixing means 33, 33a cleaning nozzle body 42 air supply means 43 air supply path

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-318623 (JP, A) JP-A-3-279525 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E03D 9/08

Claims (2)

(57) [Claims] A cleaning water supply means, a driving means for the cleaning water supply means, a cleaning water supply path communicating with the cleaning water supply means, an air supply means, a driving means for the air supply means, An air supply path communicating with the air supply means, an air mixing means connected to the water supply path and the air supply path, and mixing the cleaning water supplied from the cleaning water supply means and the air supplied from the air supply means; A washing nozzle body provided on the downstream side of the air mixing means and having a vortex chamber for jetting washing water, wherein a flow rate of the washing water mixed in the air mixing means is Qw, and a flow rate of the air is Qa; Mixing ratio Rm = Qa
/ Qw, a sanitary washing apparatus configured to satisfy the condition of 0.2 <Rm <1. 2. The sanitary washing apparatus according to claim 1, wherein the driving means for the cleaning water supply means and the driving means for the air supply are common and the same.