JPH0754007B2 - Sanitary washing equipment - Google Patents

Description

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

2. Description of the Related Art A conventional sanitary washing device directly connected to a water supply system, in particular, a method of detecting a flow rate by arranging a rotating body in running water and detecting the flow rate by the number of rotations will be described as a flow rate detecting method.

FIG. 8 is a system diagram of a conventional sanitary washing device directly connected to a water supply.

Tap water is passed from the water supply unit 40, the washing level desired by the user is set by the flow rate setting unit 45, and the flow rate is adjusted by the flow rate adjusting unit 41 according to the washing level. After that, the flow rate detector 42 detects the flow rate. A sensor ball is used as the flow rate sensor, and it detects that the rotation speed of the sensor ball changes depending on the flow rate. Here, the deviation from the set flow rate is detected and fed back to the flow rate control section 41, and the set flow rate is passed through the hot water section, the solenoid valve 17a or 17b, and the cleaning nozzle (19
a or 19b).

Therefore, when switching and using the two washing nozzles, for example, the anus washing solenoid valve 17a is opened to perform anus washing, the anus washing solenoid valve 17a is closed, and then the bidet washing solenoid valve 17b is momentarily operated. It was opened so that the bidet could be washed.

Also, in some hot water heaters, in controlling the fluid of the gas, a sensor ball is used, and the flow rate is detected by the rotation of the sensor ball to control the amount of hot water discharged.
Also in this case, when switching from the shower to the callan, the switch is instantaneously switched as in the case of the sanitary washing device.

Problems to be Solved by the Invention However, the above configuration has the following problems.

Since the anus washing and the bidet washing are switched instantaneously, the sensor ball as the flow rate detecting means is shown in FIG. 7A even though both solenoid valves 17a and 17b are closed.
Like the part, it keeps rotating due to inertia. For this reason,
When either solenoid valve is opened again and water is to be discharged, the flow rate signal to the control section is a signal that there is a flow rate, and the control section makes a misjudgment, for example, the set flow rate is 1000 cc / m 2.
Even though it is in, the opening of the flow control valve is adjusted so that the flow rate is only 400cc / min. Then, after a while, the desired flow rate can be obtained for the first time, and the usability is extremely poor.

Moreover, as shown in FIG. 7B, an irregular signal output can be obtained, and if the flow rate control is immediately performed based on this signal, it is extremely unstable to adjust the flow rate. Become.

In view of the above problems, the present invention provides a sanitary washing device that can stably switch between anus washing and bidet washing.

Means for Solving Problems The technical means for solving the above problems is to detect the water supply part and the discharge part of the wash water, the water channel connecting these parts, and the flow rate of the wash water by the rotation of the rotating body. A flow rate detection unit, a flow rate setting unit that sets the flow rate of washing water, and a flow rate adjustment unit that adjusts the flow rate according to a signal from the flow rate setting unit, and the discharge unit has at least two washing nozzles. A fixed delay time is provided when switching the cleaning nozzle.

Action When switching the cleaning nozzle, there is a certain delay, so
The true flow rate value can be detected after the state in which the rotating body is rotating due to inertia ends, and the wash water can be stably discharged by the normal feed back control.

Embodiment One embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 shows the configuration for controlling the cleaning water of the present invention including the flow of the cleaning water, and FIG. 2 is an external view of the sanitary cleaning device.

First, the flow of washing water will be described. The flow of washing water is from the water pipe 10 to a branch fitting as shown in Figs.
11, It passes through the water supply unit 8 and is branched into two paths from the middle of the water stop unit 3 and the flow rate control unit 4. The washing water passage 14 side passes through the flow rate sensor 5 of the flow rate detection unit 7, the heat exchanger 16 that heats water by the heater 15 to turn it into warm water, and the switching solenoid valves 17a and 17b.
After passing through the vacuum breaker valve (vacuum breaker) 18a or 18b, it is ejected from the anus washing nozzle 19a or the bidet washing nozzle 19b which is the discharging part 9. Reference numeral 20 is a sub-waterway branched between the water shutoff unit 3 and the flow rate control unit 4, which is provided to secure a dead water amount of approximately 250 cc / min, and is discharged to the discharge port 21 via the vacuum break valve 18c. It is in a row. And
In the water passage 12, when a switching solenoid valve 17a or 17b is applied with a predetermined or higher water pressure, high-pressure washing water is introduced to the sub water passage 20 to prevent the switching solenoid valve 17a or 17b from being overloaded. It is a waterway through the relief valve 13.

Next, a configuration for controlling the wash water will be described. Normally, at the same time when a value is input from the flow rate setting unit 1 to the control unit 2, the valve of the water shutoff unit 3 is opened, and the value at the flow rate setting unit 1 and the flow rate value indicated by the pulse signal from the flow rate detection unit 7 are shown. And a value corresponding to the value set by the flow rate setting unit 1 is set by the operation of the control unit that changes the opening degree of the valve of the flow rate adjusting unit 4 as indicated by the pulse signal from the flow rate detecting unit 7. The wash water of the specified value is discharged.

If the water pressure fluctuates during use, the control unit 2 compares the value set by the flow rate setting unit 1 and the value indicated by the pulse signal from the flow rate detecting unit 7 as described above, and the difference is calculated. Since the feedback control for adjusting the amount of cleaning water is performed by changing the opening degree of the valve of the flow rate controller 4, it is possible to constantly discharge the cleaning water at a constant level.

Next, the flow rate sensor 5 and the amplification circuit 6 in the flow rate detection unit 7 of FIG. 2 will be described.

FIG. 5 is a configuration diagram of the flow sensor 5. The flow rate sensor 5 is composed of a flow rate sensor main body 27 and a sensor ball 25 housed in a cavity of the flow rate sensor main body 27. It is the operation of the flow sensor 5, but when water flows in from the water supply port of the flow sensor main body 27, the sensor ball 25
Rotates. A magnetic field is applied to the sensor ball 25 by the permanent magnet 26 of the amplification circuit unit 28, and the magnetic field of the permanent magnet 26 is changed by the rotation of the sensor ball 25, and the magnetic resistance element 27 detects the change. Then, the amplifier circuit 6 converts it into a pulse signal. The converted pulse signal is input to the control unit 2 as a frequency, and is converted into a flow rate value and recognized by the control unit 2. The relationship between the frequency F of the pulse signal and the flow rate value Q is in a proportional relationship as shown in FIG.

Next, the control unit 2 will be mainly described with reference to FIG.

The rotation number of the ball sensor 5a is processed as a sensor rotation signal, and this is used as the flow rate value of the washing water flowing in the water channel. The washing mode setting 2b and the flow rate setting signal 2a are sent by the operation unit 1a, and whether the anal washing is bidet washing or not is set by the washing mode setting. If the anal washing and the bidet washing are switched, the delay mode switching unit 2e delays. The circuit 2d detects the deviation between the flow rate setting value of the flow rate setting signal and the flow rate signal without detecting the flow rate signal 7b for a certain period of time, and performs control processing as one input of the deviation amplifying unit 2c that outputs the deviation.

Except when switching between anal washing and bidet washing, the flow signal does not pass through the delay circuit 2d and the real-time flow signal 7b is taken into the deviation amplification section and output to the flow control system to obtain stable wash water. Is.

Next, the control flow of this embodiment will be described with reference to the flowchart shown in FIG.

It is judged whether the washing mode is selected 29, and if the washing mode is not selected, it returns to the initial state, and if the washing mode is selected, it is judged whether the washing mode is anal washing or bidet washing 30, and then the anal washing is performed. In the case of, a solenoid valve for cleaning the anus
Open 19a 32, and in case of bidet cleaning, solenoid valve for bidet cleaning 19b
Open 31.

The opening of the flow rate control valve 4 is adjusted 33 so that the set amount of water is obtained, and the cleaning water is delivered to each cleaning nozzle. Then, the above-mentioned feed back control is performed so as not to be affected by fluctuations in the water pressure 34. Then, determine if the signal from the flow rate setting unit is not stopped.
5. If it is a stop signal, close the solenoid valve 36 and return to the start. If there is no stop signal, it is judged whether there is a mode switching signal37, and if there is a mode switching signal,
For example, when anal washing is changed to bidet washing or bidet washing is changed to anal washing, the solenoid valve in the washing mode before the change is closed 38, after a certain time delay 39, the other solenoid valve is opened. It is composed. Therefore, the sensor ball 25, which is the detection body of the flow rate detection unit 7 in FIG. 5, is a state in which both solenoid valves 19a and 19b are closed and the flow rate is lost, and the sensor ball 25 is rotating only by inertia or the detection signal is in an unstable region. Therefore, the flow rate control is not performed until the state where the sensor ball 25 is stopped, that is, the true flow rate can be detected. As a result, the flow rate can be supplied very stably even when the cleaning mode is changed.

EFFECTS OF THE INVENTION As is apparent from the above, according to the present invention, when the nozzles are switched and used, water is caused to flow to the other cleaning nozzle after a delay time is provided and the rotating body is stopped. Since the control is not performed by using the signal of the state in which the flow is rotating due to inertia although there is no flow rate in practice, the set flow rate can be accurately controlled.

[Brief description of drawings]

FIG. 1 is a control block diagram of a sanitary washing device according to an embodiment of the present invention, FIG. 2 is a configuration diagram of the sanitary washing device, FIG. 3 is an external view of the sanitary washing device, and FIG. 4 is the sanitary washing device. 5 is a flow chart of the control of FIG. 5, FIG. 5 is a configuration diagram of the flow rate detecting unit, FIG. 6 is a diagram showing the relationship between the frequency of the signal obtained by the rotation of the sensor ball and the flow rate, and FIG. FIG. 8 is a diagram showing the relationship between the time and the number of rotations of the sensor ball, and FIG. 8 is a configuration diagram of a conventional sanitary washing device. 1 ... Flow rate setting section, 2 ... Control section, 4 ... Flow rate adjusting section,
5 ... Flow rate sensor, 6 ... Amplification circuit, 7 ... Flow rate detector, 17a ... Solenoid valve for anus washing, 17b ... Solenoid valve for bidet washing, 19a ... Anus washing nozzle, 19b ... Bidete washing nozzle .

Claims (1)

[Claims] 1. A discharge part having at least two nozzles for discharging wash water to a local part of a human body, a water supply part for supplying wash water to the discharge part, and a water channel connecting the discharge part and the water supply part. A flow rate adjusting section for adjusting the flow rate of the wash water in the water channel, a flow rate detecting section for detecting the flow rate of the wash water by rotation of a rotating body, a flow rate setting section for setting a flow rate of the wash water, The control unit controls the flow rate adjusting unit by the signals of the flow rate detecting unit and the flow rate setting unit, and the discharging unit and the operating unit that outputs an operation command to the control unit. 2 according to the selection signal from the operating unit. A sanitary washing device in which a constant delay time is provided in the control unit when switching between two washing nozzles.