JP4071508B2 - Toilet equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a toilet apparatus, and more particularly to a toilet apparatus in which cleaning water is heated by instantaneous heating means and sprayed locally from nozzle means.
[0002]
[Prior art]
As a toilet apparatus having a hot water washing means using a conventional instantaneous heating means, as shown in FIG. 4, water is supplied from a water supply terminal to a solenoid opening / closing valve 23 via a check valve 21 and a constant flow valve 22, and at the time of washing. Washing water supplied to the instantaneous heating means 27 from the electromagnetic opening / closing valve 23 via the vacuum break valve 24, the pump 25, and the flow sensor 26, and heated to a predetermined temperature is jetted toward the local portion by the nozzle means 28. It is configured as follows. 29 is an overflow passage. A water supply means 30 is constituted by the check valve 21 to the pump 25 and the overflow passage 29 described above. On the inlet side of the instantaneous heating means 27, an incoming water temperature detection means 31 comprising a thermistor for detecting the temperature of incoming water, and on the outlet side, an outlet water temperature detection comprising a thermistor for detecting the temperature of the hot water supplied to the nozzle means 28. Means 32 are provided.
[0003]
As shown in FIG. 5, the control device for the toilet apparatus receives the detection signals and setting data signals from the flow sensor 26, the incoming water temperature detecting means 31, the outgoing water temperature detecting means 32, and the setting means 34. Based on these data, the amount of water supplied by the water supply means 30 and the energization control for the instantaneous heating means 27 are performed to supply hot water of a desired temperature and flow rate to the nozzle means 28, and the switching control of the nozzle means 28 is controlled. Configured to do.
[0004]
At the start of cleaning, the heating amount in the instantaneous heating means 27 is calculated based on the flow rate detected by the flow sensor 26, the incoming water temperature detected by the incoming water temperature detecting means 31, and the set hot water temperature, and instantaneous heating is performed. The energization control for the means 27 is performed.
[0005]
During normal use, PID control is performed based on the flow rate detected by the flow sensor 26, the incoming water temperature detected by the incoming water temperature detecting means 31, the outgoing water temperature detected by the outgoing water temperature detecting means 32, and the set temperature. The instantaneous heating means 27 is energized and controlled to a desired hot water temperature.
[0006]
Further, the flow rate control of the hot water sprayed from the nozzle means 28 is performed by controlling the water supply means 30 based on the flow rate detected by the flow rate sensor 26 and the set flow rate.
[0007]
[Problems to be solved by the invention]
However, since the conventional configuration uses the flow sensor 26, there is a problem that the cost increases.
[0008]
In view of the above-described conventional problems, an object of the present invention is to provide a toilet apparatus capable of accurate flow control with a low-cost configuration that does not use a flow sensor.
[0009]
[Means for Solving the Problems]
The toilet device according to the present invention includes a nozzle unit that ejects cleaning water locally, a water supply unit that operates with a set operation control value and supplies the cleaning water toward the nozzle unit, and a cleaning water supplied to the nozzle unit Instantaneous heating means for instantaneously heating the water to the hot water, incoming water temperature detecting means for detecting the temperature of the cleaning water supplied to the instantaneous heating means, and water discharge for detecting the temperature of the cleaning water discharged from the instantaneous heating means a temperature detector, Bei example, the control means and control means for controlling the water supply means and the instantaneous heating means, the operation control value of the water supply means, the temperature detected by the heating amount and the entering-water temperature detecting means at the instant heating means its flow rate was determine to a predetermined flow rate, the heating amount at the moment heating means, was estimated from the operation control value of the water supply means to calculate the flow rate of the washing water by the temperature detected by the water temperature detecting means The flow rate of washing water And the temperature detected by the entering-water temperature detecting means, which is configured to determine by the setting temperature of the washing water, by calculating the flow rate based on the temperature difference before and after heating and the heating amount at the instant heating means, the flow rate at a low cost structure without using a sensor can perform accurate flow control, and washing water accurately controlled to a predetermined hot water temperature by the heating amount control is Ru reliably obtained.
[0010]
In addition, the control means, the actual flow rate detected by the external flow rate detection means temporarily installed in the toilet device during the manufacturing process of each toilet device and the water supply means at that time, the relationship between the operation control value of the water supply means and the set flow rate of the cleaning water It is preferable to store the relationship with the operation control value .
[0011]
In addition, when calculating the flow rate from the heating amount of the instantaneous heating unit and the detected temperature difference between incoming and outgoing water , the control unit refers to the relationship between the heating amount and temperature rise value obtained in advance in the instantaneous heating unit . When configured to do so, the accuracy of flow rate calculation is improved and more accurate flow rate control can be performed.
[0012]
If the power supply voltage detection means for detecting the power supply voltage is provided and the control means is configured to correct the control value of the instantaneous heating means according to the power supply voltage, the amount of heating by the instantaneous heating means due to fluctuations in the power supply voltage It is possible to reliably obtain washing water that is accurately controlled to a predetermined hot water temperature and flow rate.
[0013]
Further, the water supply means may include a pump and a motor for driving the water supply means, and the water supply amount may be varied by output control of the motor, or the water supply means may be provided with a flow rate adjustment valve. The amount of water supply may be varied by adjusting the opening degree.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the toilet apparatus of the present invention will be described with reference to FIGS. 1 and 2.
[0015]
In FIG. 1, water is supplied from a water supply terminal to an electromagnetic on-off valve 3 through a check valve 1 and a constant flow valve 2, and is driven and controlled by a motor 6 from the electromagnetic on-off valve 3 through a vacuum breaker valve 4 during cleaning. The pump 5 supplies water to the instantaneous heating means 7, and the cleaning water heated to a predetermined temperature by the instantaneous heating means 7 is supplied to the nozzle means 8 and sprayed toward the local portion. Yes. 9 is an overflow passage. A water supply means 10 is constituted by the check valve 1 to the pump 5 and the overflow passage 9 described above.
[0016]
The combination of the pump 5 and the motor 6 is generally a combination of a gear pump and a DC servo motor. The voltage control includes phase control using an AC power supply, PWM (pulse width modulation control) using a DC power supply, and PFM (pulse frequency). Modulation control) can be applied. In addition, it is preferable to use a frequency synchronous control motor such as a pulse motor or a synchronous motor in place of the DC servo motor, because the flow rate can be reliably adjusted and fine adjustment can be performed. Moreover, it can replace with the combination of a pump and a motor, and can also use an electromagnetic pump.
[0017]
The instantaneous heating means 7 is configured by a ceramic heater as a hot water heater facing a meandering heat exchange channel. An inlet water temperature detecting means (TsI) 11 comprising a thermistor for detecting the temperature of the washing water is provided on the inlet side of the instantaneous heating means 7, and an outlet water comprising a thermistor for detecting the temperature of the heated washing water is provided on the outlet side. A temperature detecting means (TsO) 12 is provided.
[0018]
As shown in FIG. 2, the control device for the toilet apparatus includes a control means 13 that includes a water temperature detection means 11, a detection signal from the water temperature detection means 12, a setting data signal from the setting means 14, and a power supply voltage detection means. The detection signal from 15 is input, flow control by the water supply means 10 and energization control to the instantaneous heating means 7 are performed based on those data, and hot water at a desired temperature and flow rate is supplied to the nozzle means 8. It is configured to perform switching control of the means 8.
[0019]
A specific control operation at the start of cleaning by the control means 13 will be described. An operation control value corresponding to the set flow rate by the setting means 14 is output from the control means 13 to the motor 6 of the water supply means 10, and the water supply means 10 The corresponding flow rate of water is supplied. Further, the energization control value for the instantaneous heating means 7 is determined based on the temperature detected by the incoming water temperature detecting means 11 and the operation control value of the motor 6 of the water supply means 10, and the instantaneous heating means 7 is energized to wash water. Heating is performed. That is, based on the operation control value of the motor 6 of the water supply means 10 determined according to the set value of the flow rate set by the setting means 14 at the start of cleaning when the temperature detection of the outlet water temperature of the instantaneous heating means 7 cannot be used. Based on the flow rate and the incoming water temperature detected by the incoming water temperature detecting means 11, the energization control for the instantaneous heating means 7 is performed. The heating amount Q by energization in the instantaneous heating means 7 is obtained by Q = k (set temperature−incoming water temperature) × flow rate (k is a coefficient).
[0020]
Further, when determining the operation control value of the motor 6 of the water supply means 10, the control means 13 is previously set as an operation program or a reference table in a storage means such as a ROM or EEPROM built in the control means 13. It is preferable to make a determination based on the relationship between the control value and the flow rate. Then, the flow rate is controlled with high accuracy by the control of the water supply means 10 based on the operation control value. Further, along with this, the amount of heating by the instantaneous heating means 7 is appropriately controlled, and cleaning water accurately controlled to a predetermined hot water temperature can be obtained with certainty. Note that the relationship between the operation control value and the flow rate is stored in the storage unit, the external flow rate detection unit is connected at the manufacturing stage to detect the actual flow rate, and the detection result and the operation control value are input to the control unit 13. Then, the relationship according to the characteristic for each toilet device can be easily set, and the flow rate can be controlled with higher accuracy.
[0021]
Next, after the energization control of the instantaneous heating means 7 is performed from the operation control value of the water supply means 10 and the incoming water temperature detected by the incoming water temperature detection means 11 and the set temperature at the start of washing as described above, the outlet temperature detection means 12, the actual water supply flow rate by the water supply means 10 is calculated from the heating amount in the instantaneous heating means 7, the detection temperature by the incoming water temperature detection means 11, and the detection temperature by the discharge water temperature detection means 12. Desired. That is, the feed water flow rate F can be obtained by F = heating amount / {k (outflow temperature−incoming water temperature)}, where k is a coefficient. Then, by adjusting the operation control value of the water supply means 10 so that the water supply flow rate F becomes a predetermined water supply flow rate, the cleaning water accurately controlled to the predetermined flow rate can be ejected from the nozzle means 8.
[0022]
Further, the heating amount in the instantaneous heating means 7 at that time can be determined based on the operation control value of the water supply means 10 and the detected incoming water temperature in the same manner as at the start of cleaning, and can be determined by simple control. Washing water that is accurately controlled to the hot water temperature can be obtained with certainty.
[0023]
Further, the relationship between the heating amount (the amount of energized power) in the instantaneous heating means 7 of each actual toilet device and the temperature rise value of the cleaning water is obtained in advance, and the relational expression and table are stored inside the control means 13. The control means 13 refers to this relationship when calculating the flow rate from the difference between the heating amount in the instantaneous heating means 7 and the temperature before and after passing through the instantaneous heating means 7. Therefore, the flow rate calculation accuracy is improved, and more accurate flow rate control can be performed. Furthermore, it is preferable to cover as much as possible the conditions that influence the heat exchange efficiency, such as the flow rate, room temperature, and incoming water temperature, as variables that define the above relationship, thereby improving the accuracy of the calculated flow rate.
[0024]
Further, the control means 13 is configured to correct the control value of the instantaneous heating means 7 in accordance with the power supply voltage detected by the power supply voltage detection means 15, and the heating by the instantaneous heating means 7 due to the fluctuation of the power supply voltage. It is possible to prevent the amount of water from fluctuating and the hot water temperature from fluctuating, and to reliably obtain wash water that is accurately controlled to a predetermined hot water temperature and improve the flow rate accuracy.
[0025]
Note that the heating amount Q by energization in the instantaneous heating means 7 may be PID controlled based on the set temperature, the detected incoming and outgoing temperatures, the calculated feed water flow rate F, and the set flow rate. It is possible to reliably obtain a predetermined amount of washing water that is controlled more precisely to the hot water temperature.
[0026]
In the above embodiment, an example is shown in which the water supply means 10 includes the pump 5 and the motor 6 that drives the pump 5 and the water supply amount is varied by the output control of the motor 6, but the present invention shown in FIG. As in the embodiment of the present invention, the water supply pressure is the water pressure at the water supply terminal, or a separate water supply means is used so that the water supply means 10 is provided with a flow rate adjustment valve 16 incorporating a stepping motor or the like. If the amount of feed water is varied by adjusting the opening degree of the flow rate adjusting valve 16 as described above, the flow rate can be reliably and reproducibly adjusted, and fine adjustment is possible. Washing water can be obtained reliably.
[0027]
【The invention's effect】
According to the toilet apparatus of the present invention, as apparent from the above description, in the toilet apparatus provided with the nozzle means, the water supply means, the instantaneous heating means, the incoming water temperature detection means, and the control means, the control means is the water supply means. determine the actuation control value, so that the flow rate to calculate the flow rate of the washing water by the temperature detected by the detected temperature and the water temperature detecting means according to the amount of heating and incoming water temperature detecting means at the instant heating means becomes a predetermined flow rate The amount of heating in the instantaneous heating means is determined by the flow rate of the washing water estimated from the operation control value of the water supply means, the detection temperature by the incoming water temperature detection means, and the set temperature of the washing water Therefore, by calculating the flow rate based on the heating amount in the instantaneous heating means and the temperature difference before and after heating, accurate flow rate control can be performed with a low-cost configuration that does not use a flow sensor. Come, and washing water accurately controlled to a predetermined hot water temperature by the heating amount control is Ru reliably obtained.
[0028]
In addition, when calculating the flow rate from the heating amount of the instantaneous heating unit and the detected temperature difference between incoming and outgoing water , the control unit refers to the relationship between the heating amount and temperature rise value obtained in advance in the instantaneous heating unit . When configured to do so, the accuracy of flow rate calculation is improved and more accurate flow rate control can be performed.
[0029]
If the power supply voltage detection means for detecting the power supply voltage is provided and the control means is configured to correct the control value of the instantaneous heating means according to the power supply voltage, the amount of heating by the instantaneous heating means due to fluctuations in the power supply voltage It is possible to reliably obtain washing water that is accurately controlled to a predetermined hot water temperature and flow rate.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a toilet apparatus according to an embodiment of the present invention.
FIG. 2 is a configuration diagram of a toilet device control device according to the embodiment;
FIG. 3 is a schematic configuration diagram of a toilet apparatus according to another embodiment of the present invention.
FIG. 4 is a schematic configuration diagram of a conventional toilet apparatus.
FIG. 5 is a configuration diagram of a control device for a toilet apparatus according to the conventional example.
[Explanation of symbols]
5 Pump 6 Motor 7 Instantaneous heating means 8 Nozzle means 10 Water supply means 11 Incoming water temperature detecting means 12 Outlet water temperature detecting means 13 Control means 15 Power supply voltage detecting means 16 Flow rate adjusting valve

Claims (6)

Nozzle means for ejecting cleaning water locally, water supply means for operating the set operation control value to supply cleaning water to the nozzle means, and cleaning water supplied to the nozzle means are instantaneously heated to warm water Instantaneous heating means, incoming water temperature detecting means for detecting the temperature of the cleaning water supplied to the instantaneous heating means, outlet temperature detecting means for detecting the temperature of the cleaning water discharged from the instantaneous heating means, and water supply means When e Bei and control means for controlling the instantaneous heating means, control means, the operation control value of the water supply means, the temperature detected by the detected temperature and the water temperature detecting means according to the amount of heating and incoming water temperature detecting means at the instant heating means calculates the flow rate of the washing water by the decide as its flow rate becomes a predetermined flow rate, the heating amount at the moment heating means, and the flow rate of washing water is estimated from the operation control value of the water supply means, the water inlet By temperature detection means Toilet and wherein the detection temperature, by being configured to determine by the setting temperature of the washing water. The control means, the actual flow rate detected by the external flow rate detection means temporarily installed in the toilet device during the manufacturing process of each toilet device, and the operation of the water supply device at that time, the relationship between the operation control value of the water supply means and the set flow rate of cleaning water The toilet device according to claim 1 , wherein a relationship with a control value is stored . When the control means calculates the flow rate from the heating amount of the instantaneous heating means and the detected temperature difference between incoming and outgoing water, it refers to the relationship between the heating amount and the temperature rise value obtained in advance in the instantaneous heating means. The toilet device according to claim 1, wherein the toilet device is configured as described above.   The power supply voltage detection means for detecting a power supply voltage is provided, and the control means is configured to correct the control value of the instantaneous heating means according to the power supply voltage. Toilet equipment.   The toilet apparatus according to any one of claims 1 to 4, wherein the water supply means includes a pump and a motor that drives the pump, and is configured to vary the amount of water supply by output control of the motor.   The toilet apparatus according to any one of claims 1 to 4, wherein the water supply means includes a flow rate adjustment valve, and is configured to vary the amount of water supply by adjusting the opening of the flow rate adjustment valve.

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