JP2551694B2 - Local cleaning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local cleaning device.

[0002]

2. Description of the Related Art FIG. 7 shows the structure of a conventional local cleaning apparatus. In this conventional example, a plug 13 is connected to a power outlet and a commercial power source of AC100V is full-wave rectified by a power source circuit 1. A DC 100V composed of the pulsating current is applied to the pump motor 3 through the pump drive circuit 2, and a predetermined power supply voltage for control is obtained by the power supply circuit 1 and applied to the control circuit 4 as an operating power supply for the control circuit 4.

The control circuit 4 turns on the pump drive circuit 2 in response to an operation signal from the operation section 5, applies DC 100 V of pulsating flow to the pump motor 3 through the pump drive circuit 2, and drives the pump motor 3. There is. The pump motor 3 drives the pump 6, and the pump 6 absorbs water from the low tank in the toilet via the filter 8 through the water supply hose 7 and the water that is absorbed and pressurized through the connection hose 10. The hot water stored in the hot water tank 9 in advance is ejected from the ejection nozzle 12 through the connection hose 10 ′ and the cylinder 11.

[0004]

However, in the above-mentioned conventional example, the pulsating DC voltage obtained by full-wave rectifying AC100V of the commercial power source is applied to the pump motor 3 through the pump drive circuit 2, AC1 as shown in 8 (a)
When the commercial power supply of 00V fluctuates to AC110V and AC90V, as shown in FIG.
Since it changes to 10V and DC90V, the rotation speed of the pump motor 3 changes and the cleaning flow rate also changes. For this reason, there is a problem that the set amount of water cannot be obtained, and the amount of water increases or decreases even at the same level, which gives the user discomfort.

The present invention has been made in view of the above problems, and an object thereof is to provide a local cleaning apparatus in which the amount of cleaning water does not change even if the power supply voltage changes.

[0006]

In order to achieve the above object, the present invention pressurizes hot water stored in a hot water tank.
Drive the pump to eject from the nozzle
Pulse motor obtained by full-wave rectification of the pump motor and AC power supply.
Apply a current voltage to the pump motor via a photo coupler.
Drive circuit and voltage detection means for detecting the power supply voltage used
And a pulse with a constant period shorter than the above-mentioned pulsating voltage generation period.
When a signal is generated as the drive signal for the photo coupler,
Depending on the power supply voltage fluctuation detected by the voltage detection means,
So that the average voltage applied to the pump motor is constant
And a control circuit for changing the on-duty of the pulse signal .

[0007]

According to the present invention, therefore, when the power supply voltage used fluctuates, the voltage detection means detects this fluctuation and the control circuit
Depending on the detection voltage road is detected by the voltage detecting means, Hotoka
The on-duty of the pulse signal that drives the
The average voltage applied to the controller is changed so as to be constant.
Therefore, the voltage applied to the pump motor is averaged.
The cycle of the pulse signal is shorter than the cycle of the pulsating voltage.
As a result , the rotation speed of the pump motor is constant without being affected by the fluctuation of the power supply voltage, so that the comfortable local cleaning can be performed without fluctuation of the amount of cleaning water.

[0008]

EXAMPLES The present invention will be described below with reference to examples. FIG. 1 shows a circuit of the embodiment, and the circuit shown in FIG.
A DC voltage obtained by full-wave rectifying a voltage obtained by reducing the commercial power supply voltage input through the plug 13 connected to the power outlet with the transformer 19 with the diode bridge 14, smoothing it with the capacitor C ₀ , and then stabilizing it with the constant voltage circuit 16. Is used as a drive power source for the control circuit 4. Further, the commercial power supply voltage is full-wave rectified by another diode bridge 15, and the DC voltage composed of the full-wave rectified pulsating current is supplied to the pump drive circuit 2.
Is connected to the pump motor 3 via the phototransistor 18 of the photocoupler 17.

The pump drive circuit 2 is adapted to be turned on when the photocoupler 17 is turned on to apply a voltage to the pump motor 3. The control circuit 4 is a diode bridge 15
The output voltage of is detected by the divided output of resistors R ₁ and R ₂ to detect the fluctuation of the commercial power supply voltage, and the divided voltage output corresponding to the fluctuation of the commercial power supply voltage is taken into the A / D conversion port,
After A / D conversion inside, the fluctuation amount of the commercial power supply voltage is determined. Based on this determination, the period in which the photocoupler 17 is turned on is controlled, and the average voltage applied to the pump motor 3 is made constant. That is, the applied voltage of the pump motor 3 is duty-controlled to make the average voltage applied to the pump motor 3 constant, and the rotation speed of the pump motor 3 is stabilized.
In addition to the output of the diode bridge 15, the voltage may be detected by using the direct current obtained by smoothing the output of the diode bridge 14 with the capacitor C _{1. In} this case, the variation of the transformer 19 causes the diode bridge 15 to output voltage. It is preferable to use the output, but it is not limited to this if the accuracy of the transformer 19 is good.

Here, the drive signal given from the control circuit 4 to the photocoupler 17 has a constant period T as shown in FIG. 2 (a) and has a pulsating voltage generation period obtained by full-wave rectification.
It is a shorter pulse signal, and its on-duty W is changed according to the fluctuation amount of the power supply voltage. In this case, since the pulsating power supply voltage for full-wave rectification shown in FIG.
The voltage shown in (c) is applied, and the average voltage becomes V. Therefore, when the pulsating power supply voltage fluctuates corresponding to the fluctuation of the commercial power supply voltage, the width of the on-duty W is controlled so that the average voltage is stabilized at V.

By the way, the control circuit 4 can set the washing water amount in, for example, five stages by a setting input from the operating section 5. In this case, the applied voltage of the pump motor 3 is set in accordance with the setting operation. Can be controlled according to. Naturally, when the power supply voltage fluctuates so that the set cleaning water amount does not fluctuate with respect to the power supply voltage fluctuation, the on-duty of the photocoupler 17 is controlled to stabilize the rotation speed of the pump motor 3 and obtain a stable cleaning water amount.

The following table shows the relationship between the five levels of wash water and the duty control in the commercial power supply voltage range.

[0013]

[Table 1]

In the above table, t may be constant or may be changed. FIG. 3 shows the actual configuration of the mechanical portion of the embodiment when bidet washing is also possible. The solenoid valve 20 is switched between a cylinder-type ejection nozzle (not shown) for bidet washing or an anus washing side by switching. It is for switching whether to eject from the cylinder-type ejection nozzle 12, and is controlled by the control circuit 4. The control circuit 4 controls the voltage of the power supply voltage fluctuations described above, drives the switching of the solenoid valve 20, and additionally controls the hot water tank 9
It also controls the heating of the hot water inside.

Next, the control operation of the control circuit 4 other than the above voltage control will be described. The control circuit 4 discriminates the operation signals sent from the operation section 5 shown in FIG. 5 and controls each section based on the respective operation signals. The control output port drives the pump motor 3 described above. Drive circuit 21 including a pump drive circuit 2 and a photocoupler 17, an energization control circuit 23 for the hot water heater 22, and a drying hot air heater 2
4 is connected to at least the drive circuit 26 of the fan motor 27 for blowing warm air, the switching control circuit 28 of the solenoid valve 20, and the drive circuit 16 of the water amount display element L ₁ ... , In addition, the switch SW ₁ for anal washing and the switch SW ₂ for bidet washing at the input port,
A drying switch SW3 for sending warm drying air,
High / low setting switches SW ₄ and SW ₅ for setting the amount of water for cleaning, and a command to drive the pump motor 3 above a certain level (120%) of the rating to increase the amount of cleaning water. The increasing switch SW ₆ and the stop switch SW ₇ for stopping the operation are connected.

These switches SW _{1 to} SW ₇ are push button switches, and are provided in the control section 5 together with the display elements L 1 ... Next, the operation of the local cleaning apparatus of the present invention will be described. First, in an initial state in which a power switch (not shown) is turned on, the pump motor 3 is driven to cause the pump 6 to store water in the hot water tank 9, and the hot water heater 22 is energized through the energization control circuit 23 to remove the water in the hot water tank 9. It is heated so that it becomes hot water with a constant temperature. This heating is performed by the energization control circuit 2 by a signal from the control circuit 4 based on a detection signal from a temperature detection element (not shown) such as a thermistor.
3 controls the energization of the hot water heater 22 by phase control or the like to keep the hot water at a constant temperature.

Now, the operation after entering the standby state from the initial state will be described with reference to the flowchart of FIG. First, when the anal washing switch SW ₁ is pushed in the standby state, the control circuit 4 checks the set washing water amount (hydraulic force) and drives the driving circuit 8 so as to correspond to the set washing water amount.
The drive of the pump motor 3 is controlled through to start the operation of the pump 6.

When the operation of the pump 6 is started, water is absorbed from the raw tank into the warm water tank 9. The water pressurized and fed into the hot water tank 9 pushes hot water stored in advance toward the electromagnetic valve 20. At this time, the control circuit 4 switches the solenoid valve 20 by the control circuit 15 to switch the flow path to the jet nozzle 6 for irrigation of the anus, and sends the hot water pushed out to the jet nozzle 6. Since the ejection nozzle 6 is a cylinder type, it is raised toward the anus by the pressure of the hot water sent in,
Warm water is spouted toward the anus vigorously from the nozzle opening at the tip to cleanse the anus. This washing period is set to about 10 to 30 seconds in advance, and the drive of the pump motor 3 is maintained until the washing period elapses by counting this period with an internal timer from the time of pressing the anal washing switch SW _1. When the cleaning period has elapsed, the drive of the pump motor 3 is stopped, and the sending of hot water to the jet nozzle 6 is stopped. Therefore, the pressure of the hot water is lost and the ejection nozzle 6 returns to the original state.

The above-mentioned setting of the amount of washing water can be switched to the above-mentioned five stages by pressing the switch SW ₄ or SW _5, and when the switch SW ₄ is operated, the amount of washing water is increased, and the switch SW ₅ is set. When operated, the amount of washing water can be gradually set so as to decrease. In this case, the setting value is stored in the control circuit 4 so that the set value is sequentially increased from the current value to the maximum value or sequentially decreased to the minimum value at every elapse of a certain time during the period when the switch SW ₄ or SW ₅ is pressed. The set value is updated, and the set value at that time is stored when the operation is canceled. Further, through the drive circuit 29, the display element L corresponding to the set water amount
₁ Turn on. This set amount of wash water is for the pump motor 3
It is set within the rated range of.

Therefore, the anus washing by operating the anus washing switch SW ₁ is performed with the amount of water within the above range. Here, when it is desired to increase the amount of washing water and shorten the washing time, it is preferable to operate the increasing switch SW ₆ . When the increase switch SW ₆ is pressed, the control circuit 4 outputs a control signal for driving the pump motor 3 at, for example, 120% of the rating to the drive circuit 8. The drive circuit 8 drives the pump motor 3 at 120% of the rating based on this control signal. The control circuit 4 sends a control signal to the drive circuit 8 so as to continue the drive of the pump motor 3 until the stop switch SW ₇ is pressed or the pushing operation of the increase switch SW ₆ is released.
Continue to output. That is, 120% operation is performed during the period in which the user is operating. In this case pump 6
As a result, the amount of water absorbed in the warm water tank 9 increases, and the amount of warm water pushed out accordingly increases. The control circuit 4 switches the flow path of the solenoid valve 20 to the jet nozzle 6 for anus washing by operating the increasing switch SW ₆ , so that the anus is washed with an increased amount of washing water, and the washing time can be shortened accordingly. Of. Since the pump motor 3 is driven only during the pressing operation of the increasing switch SW _{6 by} the user, the operating time of the pump motor 3 can be minimized.

If it is desired to dry the wet anus after washing, the drying switch SW ₃ may be pushed. When the switch SW ₃ is pushed, the control circuit 4 drives the fan motor 13 to drive the circuit 26. The hot air heater 24 is energized through the energization control circuit 25 at the same time to heat the air blown by the rotation of the fan motor 13 into warm air, and the hot air dries the local area.
This drying period is preset by the internal timer of the control circuit 4, and the energization of the fan motor 13 and the warm air heater 24 is maintained until the drying period elapses from the pressing operation of the drying switch SW ₃ .

When performing bidet washing, the bidet washing switch SW ₂ may be operated. In this case, the control circuit 4 pumps through the drive circuit 8 so that the predetermined washing water amount suitable for bidet washing is obtained. Drive the motor 3 for a certain time,
At the same time, the electromagnetic valve 20 is switched to the jet nozzle (not shown) side for bidet washing, and hot water pushed out from the hot water tank 9 is jetted from the jet nozzle (not shown) as in the case of anal washing.

When it is desired to stop the operation midway during the anus washing or bidet washing, the stop switch SW is used.
_It suffices to operate _7, and if there is this operation, the control circuit 4 immediately stops the operation.

[0024]

INDUSTRIAL APPLICABILITY The present invention relates to the temperature stored in the hot water tank.
A pump for ejecting water from a nozzle that pressurizes and ejects water.
Full-wave rectification of the AC motor and the pump motor that drives the pump
The obtained pulsating current voltage is transferred to the pump mode via a photo coupler.
Drive circuit applied to the controller and the voltage that detects the power supply voltage used
Detecting means and constant period shorter than the pulsating voltage generation period
Pulse signal is generated as the drive signal for the above photo coupler.
Power supply voltage change detected by the voltage detection means.
The average voltage applied to the pump motor is not
To change the on-duty of the pulse signal
Since it is that a control circuit, when using the power supply voltage varies, the voltage detection means detects this variation, control times
Depending on the detection voltage road is detected by the voltage detecting means, Hotoka
The on-duty of the pulse signal that drives the
Change the average voltage applied to the
The voltage applied to the pump motor can be averaged.
In addition, the period of the pulse signal is
Since it is shorter than the cycle, it can be stabilized, and as a result, the rotation speed of the pump motor can be kept constant without being affected by fluctuations in the power supply voltage. An effect that local cleaning can be performed.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention.

FIG. 2 is a waveform diagram for explaining the operation of the embodiment of the present invention.

FIG. 3 is a configuration diagram of a mechanical portion according to an embodiment of the present invention.

FIG. 4 is a circuit diagram for explaining another control operation of the embodiment of the present invention.

FIG. 5 is a front view of the operation unit according to the embodiment of the present invention.

FIG. 6 is a flowchart for explaining another control operation of the present invention.

FIG. 7 is a circuit diagram of a conventional example.

FIG. 8 is a waveform diagram for explaining the operation of the conventional example.

[Explanation of symbols]

2 Pump drive circuit 3 Pump motor 4 Control circuit 5 Operation part 14 Diode bridge 15 Diode bridge 16 Constant voltage circuit 17 Photocoupler R ₁ resistance R ₂ resistance

Claims (1)

(57) [Claims] 1. Pressurizing hot water stored in a hot water tank
Drives a pump to eject from the ejecting nozzle
Ripple flow obtained by full-wave rectification of pump motor and AC power supply
Apply a voltage to the pump motor via a photo coupler
A drive circuit and a voltage detection means for detecting the power supply voltage used,
Pulse signal with a constant period shorter than the generation period of the pulsating voltage
Is generated as the drive signal of the photo coupler.
In accordance with the fluctuation of the power supply voltage detected by the voltage detection means,
Make sure that the average voltage applied to the pump motor is constant.
A local cleaning device comprising: a control circuit that changes the on-duty of a pulse signal .