JP2769670B2 - Toilet bowl - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a toilet provided with a failure diagnosing means for detecting that a control system of a heater or a toilet seat heater of hot water for local cleaning is in an abnormal state.

[0002]

2. Description of the Related Art Conventionally, in a toilet with a local cleaning device, as a means for detecting that the temperature of hot water for local cleaning or the temperature of a toilet seat has become abnormal, Japanese Patent Application Laid-Open No.
Japanese Patent Application Laid-Open No. 88737/88. The abnormality detecting means is provided with an electronic circuit for inputting a temperature detection signal from a temperature sensor and outputting an abnormality detection signal when the detected temperature is abnormal, that is, a hard circuit.

However, since the above-mentioned conventional abnormality detecting means uses an electronic circuit constituted by a hard circuit, there is a problem that the cost is increased accordingly. SUMMARY OF THE INVENTION It is an object of the present invention to make it possible to detect an abnormality in temperature control with a part of a microcomputer program for controlling the entire toilet.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. A first means is a nozzle for jetting hot water for cleaning to a local area and an externally supplied nozzle. A heater for heating the cold water to generate the hot water, a temperature sensor for detecting the temperature of the hot water, and adjusting a current supplied to the heater based on a temperature detection signal from the temperature sensor; In a toilet with a local washing device, comprising: a control means having a built-in microcomputer for controlling the temperature of the hot water to a predetermined temperature, the microcomputer transmits a temperature detection signal from the temperature sensor at predetermined time intervals. type in,
After calculating the temperature gradient of the hot water, if the temperature gradient deviates from a predetermined range, it is detected that the energization control for the heater has become abnormal, and a failure process is performed based thereon. That is, a failure diagnosis means is provided. The second means includes a toilet seat in which a heater is incorporated, a temperature sensor for detecting the temperature of the toilet seat, and a current supplied to the heater based on a temperature detection signal from the temperature sensor. And a control means having a built-in microcomputer for controlling the temperature of the toilet seat to a predetermined temperature. The microcomputer inputs a temperature detection signal from the temperature sensor at predetermined time intervals. After calculating the temperature gradient of the toilet seat, if the temperature gradient is out of the predetermined range, it is detected that the energization control for the heater has become abnormal, and the failure processing is performed based on the abnormality. That is to provide a failure diagnosis means.

[0005]

According to the toilet constructed as described above, the micro computer
The temperature detector inputs a temperature detection signal from the temperature sensor at predetermined time intervals, calculates a temperature gradient of the hot water temperature or the toilet seat temperature, and when the temperature gradient is out of the predetermined range, the failure diagnosis means performs the heater diagnosis. , An abnormality is detected in the energization control with respect to, and processing such as displaying a failure and stopping energization is performed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 relate to a toilet with a local cleaning device, FIG. 1 is a perspective view of the toilet, FIG. 2 is a side sectional configuration diagram, and FIG. 3 is a schematic configuration diagram of a control board.

In FIG. 1, a toilet seat 2 and a toilet lid 3 are provided on a toilet body 1 so as to be openable and closable, and a low tank 4 for storing washing water is provided upright behind the toilet seat 2. The outer periphery of the tank 4 is covered with a tank cover 5, and a control base 6 having a microcomputer centrally disposed on the front side of the low tank 4 in the tank cover 5 is provided. . This microcomputer has various functions of controlling a toilet with a local cleaning device, and has a failure diagnosis function of detecting an abnormality in a temperature control described later and performing a failure process based on the abnormality. A flash motor 7 is provided on the side of the control board 6, and when the user turns on the switch of the operation unit 17, the flash motor 7 is activated to operate the rotor. The water in the tank 4 flows out to the toilet body 1 side.

Further, a deodorizing fan 8 is provided below the flash motor 7, and the odor generated on the toilet body 1 side can be discharged to the outside through the deodorizing duct 9 by the operation of the deodorizing fan 8. It has become. Further, a hot air fan 10 is provided behind the toilet seat 2, and is configured to blow hot air for drying to a local part of the user after cleaning. A hot water tank 11 is provided below the hot air fan 10, and the hot water generated in the hot water tank 11 is supplied to a side nozzle 13 via an electromagnetic pump 12. It is configured to be able to clean a local part of the user with warm water spouted from the. In order to change the angle of the nozzle 13 when hot water is blown out to a local part of a woman, a charm motor 1 is provided.
4 are provided.

An operation unit 17 provided on the side of the toilet body 1
Is equipped with various switches and LED display
18 are attached. The display LED 18 is used as a display for a failure diagnosis function described later.

[0010] The anti-freezing heater 19 is provided on the sheet.
A freezing prevention heater 19 is connected to the control board 6. The various devices are connected to the control board 6, and a schematic diagram of the control board 6 is shown in FIG.

That is, the control board 6 is connected to an operation section 17 provided with the above-mentioned various switches and display LEDs 18, and on the side thereof, a deodorizing deodorant provided in the deodorizing duct 9. A solenoid 28 is connected, and a deodorizing motor for driving the deodorizing fan 8 is provided on a side thereof.
A hot water thermistor 22 for temperature control provided in the hot water tank 11 is connected to a side of the heater 27. Further on the right side is the toilet seat 2
A heater 15 for heating, which is provided inside, is connected thereto, and a toilet seat thermistor 15a for controlling the temperature of the heater 15 is connected above the heater. Further, a leakage prevention plug 29 is connected above the plug. The plug 29 is configured to be able to supply power to the control board 6 by inserting the plug 29 into an outlet provided on a wall or the like.

A hot water heater 21 provided in the hot water tank 11 is connected above the hot water tank 11, and a float provided in the low tank 4 on the upper surface of the control board 6. Twenty-four switches 30 are connected, the side of the switch is connected to the charm motor 14, the side is connected to the flash motor 7, and the side is further connected to the side. Fan motor for driving the hot air fan 10
And a hot air fan 1 on its side.
0 is connected to the fan heater 32. Further, a remote control light receiving unit 36 for receiving an operation signal from a remote control 16 mounted on a wall surface of a toilet or the like is connected to a left side surface of the control board 6, and further below the freeze prevention heater 19 is connected therewith. And below that, Figure 2
Is connected to a room temperature sensor 20 which is provided at the rear of the hot water tank 11 and detects a room temperature. A transformer 35 is further connected therebelow, and a pump thermo 34 and a toilet seat 2 are further provided therebelow. A seating switch 33 for detecting that the user is seated is connected. Note that FIG.
Reference numeral 23 denotes a ball tap provided with the float 24, and reference numeral 25 denotes a service tank for supplying water from the ball tap 23 to the hot water tank 11.

In the toilet with the local washing device constructed as described above, the temperature of the hot water heater 21 provided in the hot water tank 11 is controlled, and the heating heater provided in the toilet seat 2 is provided. A failure diagnosis function is provided for detecting an abnormality in temperature control for the device 15. In this failure diagnosis function, the microcomputer of the control board 6 detects an abnormality in temperature control based on a failure diagnosis program. More specifically, temperature detection signals from the temperature thermistor 22 for detecting the temperature in the hot water tank 11 and the temperature thermistor 15a for detecting the temperature of the toilet seat 2 are inputted at predetermined time intervals, and the temperature gradients are inputted. When the value is out of the predetermined range, a failure process (turning on the display LED 18 and stopping the power supply to the failure circuit) is performed.

FIG. 4 is a flowchart showing a failure diagnosis function for diagnosing whether the temperature control of the hot water heater 21 in the hot water tank 11 is abnormal.
The same applies to a failure diagnosis function for detecting an abnormality in temperature control for a heater 15 provided in the toilet seat 2 for heating.
As shown in the flowchart of FIG.
2 and the temperature A is stored. Next, energization of the warm water heater 21 is started.
Next, after a lapse of a predetermined time, a temperature detection signal from the temperature thermistor 22 is input and the temperature B is stored. Next, the temperature A
Is calculated, that is, a temperature gradient, and it is determined whether or not AB> C is satisfied. Where C is a reference value,
The program automatically changes according to temperature changes in summer, winter, etc. In this determination step, when AB> C is satisfied, that is, when the temperature gradient is larger than the reference value C,
When it is determined that the temperature control for the hot water heater 21 is abnormal, the display LED 18 is turned on, and the hot water heater 21 is turned on.
The energization to 1 is stopped. On the other hand, if the temperature gradient is smaller than the reference value C, the process returns to the first step and repeats the same processing. In addition, as an example of the timing of performing the above processing,
When the electromagnetic pump 12 is turned on and hot water is ejected from the nozzle 13, a trigger is generated and a temperature gradient when water is supplied to the hot water tank 11 is calculated. In the above-mentioned flowchart, the control for performing the failure processing is performed when the temperature gradient is too large than the predetermined reference value. However, the control is performed so that the failure processing is also performed when the temperature gradient is too small for the reference value. Is also good.

FIG. 5 shows a characteristic diagram of the temperature gradient in the hot water tank 11 to supplement the above description. That is,
In FIG. 5, when the washing water is jetted from the nozzle 13 to wash the buttocks, the washing water flows into the hot water tank 11 through the service tank 25, and the temperature in the hot water tank 11 is thereby reduced. At this time, the hot water heater 21 is energized through the hot water thermistor 22 and is heated by the hot water heater 21 at this time. When the valve 21 operates, the temperature gradient in the hot water tank 11 becomes a gentle temperature gradient as shown in FIG. However, warm water heater-21
In the case where a failure (disconnection) occurs, since the heating by the hot water heater 21 is not performed, the temperature decrease gradient becomes sharp as shown in FIG. It is determined that there is an abnormality and the above control is performed. In addition,
P1 in FIG. 5 indicates a point at which hot water is ejected from the nozzle 13 to suck hot water in the hot water tank 11, and P2 in the figure indicates a point at which the hot water heater 21 is turned on.

Next, for reference, FIG. 6 shows a characteristic diagram of a temperature gradient of the heating heater 15 of the toilet seat 2. That is, when the heating toilet seat 2 is turned on in FIG. 6, the temperature of the toilet seat 2 rises from a point P3 at which the switch is turned on to a predetermined temperature by a heater 15 in a normal state as shown in FIG. Although the temperature is kept at a constant value, if the heater 15 has failed (disconnected), the temperature does not rise and the temperature gradient becomes 0 as shown by b, and this state is determined to be abnormal.
Further, when the heater temperature thermistor 15a is out of order, the heater 15 goes out of control and the temperature rises rapidly as shown in FIG. Judge.

[0017]

As described above, according to the present invention, a nozzle for jetting hot water for cleaning to a local area, a heater for generating cold water by heating cold water supplied from the outside, And a built-in microcomputer for controlling the current supplied to the heater based on a temperature detection signal from the temperature sensor and controlling the hot water to a predetermined temperature. In a toilet with a local washing device provided with a control means, or based on a toilet seat in which a heater is incorporated, a temperature sensor for detecting the temperature of the toilet seat, and a temperature detection signal from the temperature sensor. A toilet provided with a microcomputer built-in control means for controlling the current supplied to the heater and controlling the temperature of the toilet seat to a predetermined temperature, wherein the temperature of the toilet is controlled by a program of the microcomputer; It is possible to detect an abnormality,
The temperature control can be diagnosed at low cost without the need for a special hard circuit.

[Brief description of the drawings]

FIG. 1 is a transparent perspective view of a toilet with a local cleaning device.

FIG. 2 is a side sectional configuration diagram of FIG. 1;

FIG. 3 is a schematic configuration diagram of an arrangement of a control board.

FIG. 4 is a flowchart showing an example for failure diagnosis.

FIG. 5 is a temperature gradient characteristic diagram in a hot water tank.

FIG. 6 is a temperature gradient characteristic diagram of a toilet seat.

[Explanation of symbols]

 Reference Signs List 1 toilet body 2 toilet seat 4 low tank 6 control board 11 hot water tank 12 electromagnetic pump 13 nozzle 15 toilet seat heater 15a temperature thermistor 17 operation unit 18 display LED 21 hot water heater 22 temperature thermistor

Claims (2)

(57) [Claims] A nozzle for jetting hot water for cleaning to a local area; a heater for heating cold water supplied from the outside to generate the hot water; a temperature sensor for detecting the temperature of the hot water; With a local cleaning device having a built-in microcomputer control means for controlling the current supplied to the heater based on a temperature detection signal from a temperature sensor and controlling the hot water to a predetermined temperature. In the toilet, the microcomputer inputs a temperature detection signal from the temperature sensor at predetermined time intervals, calculates a temperature gradient of the hot water, and, when the temperature gradient is out of a predetermined range, the heat pump.
A toilet comprising a failure diagnosis means for detecting an abnormal state of energization control for a heater and performing a failure process based on the detection. 2. A toilet seat in which a heater is incorporated, a temperature sensor for detecting the temperature of the toilet seat, and a current supplied to the heater is adjusted based on a temperature detection signal from the temperature sensor. A toilet having a microcomputer built-in control means for controlling the temperature of the toilet seat to a predetermined temperature, wherein the microcomputer inputs a temperature detection signal from the temperature sensor at predetermined time intervals, After calculating the temperature gradient of the toilet seat, if the temperature gradient is out of the predetermined range, it is detected that the energization control for the heater has become abnormal, and a failure diagnosis is performed based on the abnormality. A toilet bowl comprising means.