JPH0988158A - Sanitary cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide various cleaning feelings by a liking of a user by opening and closing a flow control valve according to a change in a flow rate of wash water, and setting flow speed and a flow rate in various conditions. SOLUTION: In a flow control valve 74b, a ball valve element 74c is energized in the valve opening direction by a spring 74d, and when a flow rate of wash water is a little, the ball valve element 74c is opened, and when it becomes a flow rate not less than a prescribed value, its load is set so that the valve is opened. When wash water of a small flow rate is supplied from a water stop condition, water pressure is slightly applied to the ball valve element 74c, and the flow control valve 74b is opened, and wash water is spouted out from three injection ports 72a together with the other injection port 72a. On the other hand, when wash water of a large flow rate is supplied, strong water pressure is applied to the ball valve element 74c, and the outlet side of the injection ports 72a is closed, and wash water is injected only from the other two injection ports 72a. When flow speed is increased larger than an increase in a flow rate, water power can be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sanitary washing device for jetting washing water toward a local area of a human body.

[0002]

2. Description of the Related Art Conventionally, a sanitary washing device of this type includes, for example, a valve unit connected to a water source such as tap water, a heat exchanger for heating washing water supplied through the valve unit, and a user. A flow rate adjusting unit that adjusts the flow rate of the washing water by the adjusting operation and the like, and a washing nozzle that ejects the washing water toward the local part of the human body.

In this sanitary washing device, the flow rate is changed by the adjusting operation of the flow rate adjusting unit, but the flow velocity is also changed at this time. This relationship will be described with reference to FIG. FIG. 19 is a graph showing the relationship between the flow rate Q of the cleaning water discharged from the cleaning nozzle and the flow velocity V. As can be seen from the graph, the flow velocity V also increases in proportion to the increase in the flow rate Q. The flow velocity V can be expressed by V = Q / A, where A is the area of the injection port of the cleaning nozzle.

[0004]

By the way, the feeling of cleaning is
Generally, it is represented by a water force (flow velocity) that represents the cleaning ability and a volume (flow rate) that represents comfort. However, in the above-mentioned conventional technique, the flow velocity V and the flow amount Q have a monotonous proportional relationship. That is, when the flow rate Q is increased, the flow velocity V is monotonically increased. Therefore, in particular, the flow rate Q
There is a problem that it does not bring about a more diverse cleaning feeling, which corresponds to the user's preference when it is desired to increase only the flow rate V without changing the flow rate, or when it is desired to increase only the flow rate Q without changing the flow rate V. It was

An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide a sanitary washing device capable of designing the flow rate and flow rate of washing water according to the preference of the user and enhancing the feeling of washing. With the goal.

[0006]

Means for Solving the Problem and Its Action / Effect The invention according to claim 1 made in order to solve the above-mentioned problem, is to supply the washing water in a sanitary washing device for discharging washing water for washing a local part of a human body. Cleaning water supply means, an injection means having an injection port for ejecting the cleaning water supplied from the cleaning water supply means toward a local part of a human body, and the cleaning water supply means supplies the cleaning water to the injection means by the setting of the user. Flow rate changing means for changing the flow rate of the cleaning water, and the spraying means changes the effective area for discharging the cleansing water from the jet port according to the change of the flow rate of the cleaning water by the flow rate changing means. It is characterized in that it comprises an effective area changing means.

In the sanitary washing device of the present invention, the washing water is supplied to the jetting means by the washing water supply means. The spraying unit sprays the cleaning water supplied from the cleaning water supply unit from the spraying port to clean the human body locally. At this time, the user can change the flow rate of the wash water supplied from the wash water supply means to the jetting means by adjusting the flow rate changing means.

Further, the jetting means is provided with an effective area changing means. The effective area changing means changes the effective area for ejecting the cleaning water according to the flow rate of the cleaning water. By changing this effective area, the flow velocity does not increase monotonically in proportion to the flow rate of the washing water, but depending on the design, the flow velocity does not change, but only the flow velocity is strengthened, or the flow velocity does not change. Can be increased. Therefore, it is possible to obtain various feelings of washing according to the taste of the user.

As the effective area changing means, the effective area of the injection port can be increased as the flow rate of the washing water increases. That is, by the effective area changing means,
By increasing the effective area as the flow rate increases,
Instead of monotonically increasing the flow velocity, it is possible to obtain a feeling of volume at a large flow rate while suppressing the rate of increase in the flow velocity.

Further, as the effective area changing means in another aspect, the effective area of the injection port can be reduced as the flow rate of the washing water increases. That is, the effective area changing means reduces the effective area as the flow rate increases, so that a water force with high cleaning power can be obtained.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to further clarify the configuration and operation of the present invention described above, preferred embodiments of the present invention will be described below. FIG. 1 is an external view of a Western style toilet equipped with a sanitary washing device.

As shown in FIG. 1, the sanitary washing device 10 includes:
A casing body 11 that is attached to the toilet body 5 and contains a device for heating the wash water and blowing hot air, and a nozzle device 12 for ejecting the wash water locally.
An operation panel 13 for performing operation, and hot water for controlling hot water discharge and nozzle position based on the operation of the operation panel 13.
And a nozzle control device 14 (see FIG. 2). In the embodiment, the toilet lid 16 and the toilet seat 17 are also attached to the casing body 11 so as to be openable and closable.

The external water source is connected to a flush water tank (not shown) for storing flush water flowing on the ball surface 5a of the toilet body 5, but as shown in FIG.
Therefore, the sanitary washing device 10 is also piped through the connecting pipe 21 to supply water thereto. The sanitary washing device 10 includes a water supply adapter 22, a pressure reducing valve 23, and a solenoid valve 2 from the upstream side.
4, a valve unit 26 including a safety valve 25 and a heater 2 while detecting the temperature of the supplied water by a temperature detector 28.
A heat exchanger unit 3 including a heat exchanger 30 for heating to an appropriate temperature at 9 and a float switch 31 for detecting a water discharge state.
2, a check valve 33, a flow control unit 36 including a flow control valve 35 driven by a flow control motor 34, and a first opening / closing valve 37.
a and an on-off valve unit 37 having a second on-off valve 37b, and the nozzle device 12 is connected to the tip thereof. The nozzle device 12 includes a drive device 80 and the like for driving the nozzle body 60 in the axial direction.

The hot water / nozzle controller 14 is, as shown in FIG. 3, an electronic controller 4 comprising a microcomputer.
0 mainly, the anal washing button 13a, the bidet washing button 13b, the stop button 13c from the operation panel 13
And input the signal of the flow rate adjustment button 13d,
Input a signal from the seat sensor 38 provided on the toilet seat 17,
The electromagnetic valve 24 and the heater 29 are controlled.

A rough operation of each unit will be described.
When the user sits on the toilet seat 17, a signal to that effect is output from the seating sensor 38, and thereafter, when the user operates the operation panel 13 to instruct, for example, washing after toilet, the drive device 80 is driven. The nozzle body 60 is integrally advanced to the cleaning position, the first opening / closing valve 37a of the valve unit 26 is opened, and the ejection of cleaning water is started. The flow rate of wash water is
It is controlled by the flow adjustment motor 34 based on the operation amount of the flow rate adjusting button 13d. After the cleaning is completed, when the stop button 13c of the operation panel 13 is turned on to instruct the completion of the cleaning, the first opening / closing valve 37a is closed and the spraying of the cleaning water is completed. Body 60
To the storage position.

Next, the nozzle device 12 will be described in detail with reference to FIGS. As shown in FIG. 4, the nozzle device 12 includes a base 52 fixed to the lower portion of the casing body 11 and having a slide surface 52 a, and a pipe-shaped nozzle body 60 slidably assembled to the slide surface 52 a of the base 52. A nozzle head 70 fixed to the tip of the nozzle body 60, a drive unit 80 for sliding the nozzle body 60, and a nozzle cleaning cover 100 for cleaning the nozzle head 70.

As shown in FIG. 5, the nozzle body 60 is provided internally with a first passage 62a for washing the anus and a second passage 62b for washing the bidet. First passage 62a and second
The passage 62b is formed along the axial direction of the nozzle body 60, and the second passage 62b is formed from the first passage 62a to the tip of the nozzle head 70. First passage 62a
Is connected to the first opening / closing valve 37a (FIG. 2) and is connected to the second passage 6
2b are respectively connected to the second on-off valve 37b (FIG. 2).

As shown in FIG. 5, the nozzle head 70 is provided.
Has an axial length that is hidden by the nozzle cleaning cover 100 at the storage position where the nozzle body 60 is completely stored in the slide surface 52a. On the upper surface of the nozzle head 70, an anus washing jet 72a and a bidet washing jet (not shown) are formed. The injection port 72a communicates with the first passage 62a, and the injection port for bidet cleaning communicates with the second passage 62b.

The jet port 72a of the nozzle head 70 is
Three are formed (two are shown in the drawing), and one of them forms a part of the injection mechanism 74. 7 to 9 show the injection mechanism 74, FIG. 7 shows the valve closed state when the water is stopped, FIG. 8 shows the valve opened state at the small flow rate, and FIG. 9 shows the valve closed state at the large flow rate. The injection mechanism 74 includes the first passage 62a.
Is provided with an injection passage 74a. A flow rate adjusting valve 74b is provided in the injection passage 74a, and the flow rate adjusting valve 74b includes a ball valve body 74c and a spring 74d.

In the flow rate control valve 74b, the ball valve element 74c is biased in the valve closing direction by the spring 74d, and the pressure of the cleaning water is not applied to the ball valve element 74c. The entrance is closed.
Further, the spring 74d is set to have the following load with respect to the ball valve element 74c. That is, the spring 74d opens the ball valve element 74c when the flow rate of the washing water is small (state of FIG. 8), and closes the ball valve element 74c when the flow rate exceeds a predetermined value. The load is set to (state of FIG. 9).

Next, the sanitary washing device 10 and the nozzle device 1
The cleaning operation of No. 2 will be described. When the user presses the anus washing button 13a on the operation panel 13 after the urination, hot water /
The nozzle control device 14 opens the first opening / closing valve 37a and the second opening / closing valve 37b, and the heat exchanger 30 opens the first passage 62a and the second passage 62a.
Supply wash water to the passage. First passage 62a, second passage 6
Water that has passed through 2b is ejected from the ejection port 72a and the like. The sprayed cleaning water hits the inner surface of the nozzle cleaning cover 100 and bounces off, and becomes a flow along the inner surface of the nozzle cleaning cover 100, and then flows down from the lower end opening portion of the nozzle cleaning cover 100 to the ball surface 5a of the toilet body 5, which causes the nozzle head to flow. 7
Rinse the dirt and other substances adhering to the 0 peripheral surface for a predetermined time.

After cleaning the nozzle head 70, the drive motor 82 advances the nozzle body 60 to a predetermined stroke. At the same time, the heat exchanger 30
The cleaning water from the nozzle head 70 is discharged from the first passage 62a.
And the washing water is jetted from the anus washing jet port 72a. As a result, anus washing is performed. And
When the stop button 13c is pressed, the supply of washing water is stopped,
Further, the drive motor 82 is rotated in the reverse direction to return the nozzle body 60 to the stored state shown in FIG.

Next, the operation of the ejection mechanism 74 of the nozzle head 70 will be described. Now, when a small amount of cleaning water is supplied from the water stop state of FIG. 7, a slight water pressure is applied to the ball valve element 74c, and the flow rate control valve 74b opens (state of FIG. 8). As a result, the cleaning water is ejected from the three ejection ports 72a together with the other ejection ports 72a. On the other hand, when a large amount of cleaning water is supplied, the ball valve element 74c
A strong water pressure is applied to the outlet to close the outlet side of the injection port 72a (the state of FIG. 9), and the wash water is ejected from only the other two injection ports 72a.

In FIG. 10, the flow rate Q of the washing water is plotted along the horizontal axis and the flow velocity V
Is shown on the vertical axis. As shown in FIG. 10, the flow rate Q is 300
The flow rate V can be adjusted to ~ 1300 ml / min.
It is configured to be variable from 2.5 to 16.2 m / s. Here, the solid line shows the present embodiment, the one-dot chain line shows the case where three injection ports 72a are formed, and the two-dot chain line shows the characteristics when two injection ports 72a are formed.

In the embodiment shown by the solid line, a small flow rate Q
In the case of 1, the wash water is ejected from the three ejection ports 72a, so that the flow rate Q and the flow velocity V have a relationship along the alternate long and short dash line. When the flow rate Q exceeds a predetermined value, the flow rate control valve 74b is closed and the wash water is jetted from the two jet ports 72a, so that the relationship along the chain double-dashed line is obtained. Therefore, the flow velocity V does not increase proportionally along the one-dot chain line with the increase of the flow rate Q, but becomes larger when the flow rate V is large. In this way, by increasing the flow velocity V to be larger than the increase in the flow amount Q, the water force can be increased.

Further, since it is not necessary to change the maximum flow rate (1300 ml / min) in order to increase the flow velocity V, it is not necessary to increase the heating capacity of the heat exchanger 30 or other capacity.

Furthermore, when the flow rate Q is small, water is discharged from the three injection ports 72a, so that the water force does not become too large when the amount of water is small.

11 and 12 are cross-sectional views showing the main parts of a nozzle head 70B according to another embodiment. The nozzle head 70B shown in FIGS. 11 and 12 has the same configuration as the nozzle head 70 shown in FIGS. 7 to 9 except that the load of the spring 74Bd is large. That is,
The spring 74Bd loads the load so that the ball valve body 74Bc closes the inlet of the injection passage 74Ba in the small flow rate range (state of FIG. 11) and opens the ball valve body 74Bc in the large flow rate range (state of FIG. 12). It is set.

FIG. 13 shows the flow rate Q of the washing water in the nozzle head 70B of FIGS. 11 and 12 on the horizontal axis, and the flow velocity V on the vertical axis. As shown in FIG. 13, the flow rate Q is 300 to 17
It can be adjusted to 40 ml / min, and the flow rate V is 1.9.
It can be adjusted within the range of m / s to 10.9 m / s. In FIG. 13, the solid line shows the present embodiment, the one-dot chain line shows the case where four injection ports 72Ba are formed, and the two-dot chain line shows the case where three injection ports 72Ba are formed.

Therefore, when the flow rate is small, the ball valve body 7
Since the water pressure applied to 4Bc is small, the flow control valve 74Bb
Is closed, and the three injection ports 7 are
Wash water is jetted from 2Ba. At this time, since the combined area of the three injection ports is small, even with a small flow rate,
It is possible to secure a flow velocity V that is relatively large to some extent.

On the other hand, when the flow rate is large, the ball valve body 74Bc
Since the water pressure applied to the valve is large, the flow rate control valve 74Bb opens, and the four injection ports 72Ba have the characteristics along the alternate long and short dash line.
The washing water is jetted from. At this time, the four injection ports 72
Since the combined area of Ba is large, the maximum flow rate Q can be obtained without increasing the maximum flow rate V (10.9 m / s) of the flow rate V.
Can be increased.

Therefore, when the flow rate is small, it is possible to secure a water flow (flow velocity) above a predetermined level, and when the flow rate is high, the flow rate can be increased without increasing the water flow (flow velocity).

FIG. 14 is a sectional view showing another embodiment.
In this embodiment, the effective area of the injection port 72Ca is reduced as the flow rate increases. In FIG. 14, the injection mechanism 74C is urged toward the upstream side by the injection port 72Ca formed in the flow path forming member 75C, the ball valve body 74Cc arranged in the injection port 72Ca, and the ball valve body 74Cc. And a spring 74Cd. The injection port 72Ca is formed so as to reduce the flow passage area toward the downstream side.

With this configuration, at a small flow rate, the ball valve body 74Cc does not move largely against the urging force of the spring 74Cd because the flow velocity of the cleaning water is weak and does not move greatly.
Cannot reduce the effective area (state of FIG. 14A). On the other hand, when the flow rate is large, the ball valve element 74Cc moves,
The effective area of the injection port 72Ca is narrowed, and the flow velocity can be increased (state of FIG. 14B).

FIG. 15 is a sectional view showing another embodiment.
In this embodiment, the flow rate range is increased.
The ejection mechanism 74D is formed by forming the ejection port forming member 75D with an elastic material. With this configuration, when a large fluid pressure is applied to the periphery of the injection port 72Da at the time of a large flow rate, the surrounding portion is elastically deformed, and the area of the injection port 72Da increases. Thereby, the flow velocity at the time of a large flow rate can be weakened.

FIG. 16 is a sectional view showing still another embodiment. In this embodiment, compared with the embodiment of FIG. 14, the change of the flow passage area of the injection port 72Ea of the injection mechanism 74E is formed in the opposite direction, that is, the flow passage area becomes larger toward the downstream side. It is a thing. With this configuration, when the flow rate is small, the ball valve element 74Ec does not move so much, so that a strong flow velocity V is obtained, while when the flow rate is large, the ball valve element 74Ec is obtained.
Since Ec moves against the force of the spring 74Ed and the effective area of the injection port 72Ea increases, the flow velocity can be increased.

The present invention is not limited to the above embodiment, but can be implemented in various modes without departing from the gist of the present invention. For example, the following modifications are possible.

By combining the flow rate control valves of FIGS. 7 and 11, as shown in FIG. 17, a structure is provided in which the flow rate is increased at a large flow rate and a small flow rate and a range in which the flow rate is weakened is provided, and as shown in FIG. Thus, it is possible to realize a configuration in which the flow rate is increased at a medium flow rate and the upper limit of the flow rate is increased.

[Brief description of drawings]

FIG. 1 is an external view showing a western-style toilet equipped with a sanitary washing device 10 according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a water channel system of the sanitary washing device 10 according to the present embodiment.

FIG. 3 is a block diagram illustrating an electronic control device of the sanitary washing device 10 of the present embodiment and its input / output device.

FIG. 4 is a side view showing the nozzle device 12 partially broken away.

FIG. 5 is a nozzle head 70 and a nozzle cleaning cover 100.
FIG.

FIG. 6 is a sectional view showing a main part of a nozzle head 70.

FIG. 7 is an explanatory diagram showing a closed state of a flow rate control valve 74b.

FIG. 8 is an explanatory diagram showing the operation of the flow rate control valve 74b when the flow rate is small.

FIG. 9 is an explanatory diagram showing the operation of the flow rate control valve 74b when the flow rate is large.

FIG. 10 is a graph showing the relationship between the flow rate and the flow rate of cleaning water ejected from the nozzle head 70.

FIG. 11 is an explanatory diagram showing the operation of the injection mechanism according to the second embodiment when the flow rate is small.

FIG. 12 is an explanatory diagram showing the operation of the injection mechanism according to the second embodiment at a large flow rate.

FIG. 13 is a graph showing the relationship between the flow rate and the flow rate of cleaning water ejected from the nozzle head according to the second embodiment.

FIG. 14 is an explanatory diagram illustrating an injection mechanism according to a third embodiment.

FIG. 15 is an explanatory diagram illustrating an injection mechanism according to a fourth embodiment.

FIG. 16 is an explanatory diagram illustrating an injection mechanism according to a fifth embodiment.

FIG. 17 is a graph showing the relationship between the flow rate and the flow rate of cleaning water ejected from the nozzle head according to another embodiment.

FIG. 18 is a graph showing the relationship between the flow rate and the flow rate of cleaning water ejected from the nozzle head according to another embodiment.

FIG. 19 is a graph showing the relationship between the flow rate and the flow velocity of cleaning water ejected from a conventional nozzle head.

[Explanation of symbols]

 5 ... Toilet body 5a ... Ball surface 10 ... Sanitary washing device 11 ... Casing body 12 ... Nozzle device 13 ... Operation panel 13a ... Anus washing button 13b ... Bidet washing button 13c ... Stop button 13d ... Flow control button 14 ... Hot water / nozzle Control device 16 ... Toilet lid 17 ... Toilet seat 20 ... Branch fitting 21 ... Connection pipe 22 ... Water supply adapter 23 ... Pressure reducing valve 24 ... Electromagnetic valve 25 ... Safety valve 26 ... Valve unit 28 ... Temperature detector 29 ... Heater 30 ... Heat exchanger 31 ... Float switch 32 ... Heat exchanger unit 33 ... Check valve 34 ... Flow control motor 35 ... Flow control valve 36 ... Flow control unit 37 ... Open / close valve unit 37a ... First open / close valve 37b ... Second open / close valve 38 ... Seat sensor 40 ... Electronic control device 52 ... Base 52a ... Sliding surface 60 ... Nozzle body 62a ... First passage 62b ... Second passage 0 ... Nozzle head 70B ... Nozzle head 72Ba ... Jet port 72Ca ... Jet port 72Da ... Jet port 72Ea ... Jet port 72a ... Jet port 74 ... Jet mechanism 74Ba ... Jet passage 74Bb ... Flow rate control valve 74Bc ... Ball valve element 74Bd ... Spring 74C ... injection mechanism 74Cb ... flow control valve 74Cc ... ball valve body 74Cd ... spring 74D ... injection mechanism 74Db ... flow control valve 74E ... injection mechanism 74Eb ... flow control valve 74Ec ... ball valve body 74Ed ... spring 74a ... injection passage 74b ... flow control Valve 74c ... Ball valve body 74d ... Spring 75C ... Flow path forming member 75D ... Injection port forming member 80 ... Drive device 82 ... Drive motor 100 ... Nozzle cleaning cover

Claims (3)

[Claims] 1. A sanitary washing device for discharging washing water for washing a local part of a human body, wherein the washing water supply means for supplying the washing water and the washing water supplied from the washing water supply means are jetted toward the local part of the human body. And a flow rate changing means for changing the flow rate of the wash water supplied from the wash water supply means to the jetting means according to the setting of the user, and the jetting means is the flow rate changing means. A sanitary washing device comprising: an effective area changing means for changing an effective area for ejecting the washing water from the jet port in accordance with a change in the flow rate of the washing water. 2. The sanitary washing device according to claim 1, wherein the effective area changing means is configured to increase the effective area of the injection port as the flow rate of the washing water increases. 3. The sanitary washing device according to claim 1, wherein the effective area changing means is configured to reduce the effective area of the injection port as the flow rate of the washing water increases.