JPS6344032A - Water saving device of flash toilet - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] purpose of invention (Industrial application field) This invention relates to a water saving device for flush toilets.

(Prior art) Conventionally, this type of water saving device uses a sensor to detect when a user enters the room, measures the elapsed time from the time the user enters the room to the time the user operates the water discharge valve, and calculates the elapsed time. A system has been proposed in which small wash water is flown when the time is within a preset time, and large river wash water is flowed when the time is longer than the preset time.

(Problems to be Solved by the Invention) However, in the water-saving device for flush toilets proposed above, since there are individual differences among users due to differences in the state of clothing, etc., it is difficult for users to actually use the flush toilet. It was not possible to accurately detect the starting time.

Structure of the Invention (Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the present invention aims to solve the above-mentioned problems by discharging water for the first time ( (hereinafter referred to as etiquette cleaning)
It is common practice to spray water a second time to muffle the noise during use (hereinafter referred to as "noise-muffling water spray"), and finally to spray water for cleaning (hereinafter referred to as "main cleaning"). The first invention has been made by focusing on the above point, and the first invention includes a water discharging means for discharging flushing water into the toilet bowl, and an operation for activating the water discharging means to start discharging the flushing water into the toilet bowl. exit detection means for detecting exit of a user; timer operation means for operating a timer to measure when the operation means is operated for the first time after the exit detection means detects exit; and the exit detection means. After the exit is detected by the means, a small amount of etiquette washing water is discharged when the operating means is operated for the first time by a new user, and the time t measured by the timer is within a predetermined time T elapsed. The water discharging means is controlled so that a small amount of sound-muffling or small-use washing water is sprayed depending on the operation of the operating means, and a large amount of washing water is sprayed depending on the operation of the operating means after the elapse of the time T. and water discharge amount control means for adjusting the amount of water discharged.

Furthermore, in addition to the configuration of the first invention, a second invention further includes a counting means for counting the number of times of water spraying, and a water spraying means for discharging washing water from a large mountain when the number of water spraying reaches a predetermined number of times. The system is equipped with water discharge amount control means for adjusting the amount of water discharged.

(Function) With the above configuration, in the first aspect of the invention, when the operation means is operated for the first time by a new user after the exit detection means detects the exit of the user, the water discharge amount control means is not activated due to etiquette. When the operating means is operated for the first time, a timer is operated to measure the timer based on the timer operating means.If the operating means is operated within a predetermined time period, the amount of water sprayed is controlled. The means discharges a small amount of cleansing water for sound muffling or small use, and discharges a large amount of cleansing water when the operating means is operated after the above-mentioned time has elapsed.

Furthermore, in the second invention, in addition to the effect of the first invention, when the counting means for counting the number of times of water spraying reaches a predetermined number of water spraying, the water spraying amount control means sprays a large amount of washing water with the water spraying means. let

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 4.

In Figure 2, 1 is a Japanese-style flush toilet, and 2 is the Japanese-style flush toilet 1.
A water discharge pipe for discharging washing water to the water discharge pipe 2.
A solenoid valve 3 that starts and stops discharging wash water to the solenoid valve 3, and a water pressure regulating valve 5 that controls the water pressure supplied from the water supply pipe 4 to the solenoid valve 3 are provided. And the water discharge pipe 2. Solenoid valve 3, water supply pipe 4. The water pressure regulating valve 5 constitutes a water discharging means 6.

7 is a control box incorporating the water spraying means 6,
Various control devices are built in to control the water spraying operation for the water spraying means 6, and a water spraying switch 8 as an operating means is provided on the side wall thereof. Reference numeral 9 denotes an exit sensor as exit detection means, which is composed of an infrared sensor installed on the side walls of the toilet facing each other, and is turned off while the user is blocking infrared rays at a position above the Japanese-style flush toilet 1; When the user exits, the switch is turned on, and an exit detection signal is output one time each time to a control device as a water spray control means provided in the control box 7.

Note that when the user enters the room and the infrared rays are blocked, the exit sensor 9 also functions as a room presence sensor and outputs an on signal different from the exit detection signal to the control device.

Next, this control li! ! The electrical configuration of the device will be explained.

In Figure 1, 10 is a central processing unit (hereinafter referred to as CPU)
A timer operation means, a counting means, a first water discharge amount control circuit 15, a second water discharge amount control circuit 1, which will be described later.
6. Together with the third water discharge amount control circuit 17, it constitutes a water discharge amount control means, the water discharge switch 8 and exit sensor 9 are connected, and a water discharge signal and an exit detection signal are input.

17 is a read-only memory (hereinafter referred to as ROM) that stores a control program for controlling and driving the CPLI 10; 12 is a readable and writable memory;
The RAM is configured to store the results of calculations and exit detection signals, and is also provided with a count register 13.

A timer circuit 14 is connected to the CPU 10 and measures time based on a control signal from the CPU 10.

The first water discharge amount control circuit 15 excites and drives the electromagnetic valve 3 based on the control signal from the CPU 10, and discharges a small amount (about 3 to 4 liters in this embodiment assuming etiquette cleaning).
It sprays washing water and then stops. The second water discharge amount control circuit 16 excites and drives the electromagnetic valve 3 based on a control signal from the CPU 10, and a small amount (about 6 liters in this embodiment, assuming sound-reducing water discharge and main cleaning for small items). It sprays washing water and then stops.

The third water discharge amount control circuit 17 operates based on a control signal from the CPU 10 to excite and drive the N solenoid valve 3 to discharge a large amount (about 12 liters in this embodiment, assuming main cleaning of Okawa). It sprays cleaning water and then stops.

Now, the operation of the control device configured as described above will be explained with reference to the flowchart shown in FIG.

When the power is turned on, the CPtJ 10 resets the count register 13 provided in the RAM 12 as a counting means for storing the number of times of water spraying (step 1, hereinafter, step is expressed as S), and sets the count number N to "0". Toshi, S
2, the CPU 10 waits for the room occupancy sensor to be turned on, and when it is determined that it has been turned on, the CPU 10 then determines whether the user has turned on the water discharge switch 8 (S3). Then, when the water discharge switch 8 is turned on, the CPU 10 outputs a control signal to the first water discharge amount control circuit 15 in S4, and excites the 1i magnetic valve 3 to discharge a small amount of cleaning water. While cleaning the etiquette, add ``1J'' to the count register 13.
uio is the time (t) for the timer circuit 14 in S5.
Start measurement.

Next, CPUIO waits for the water discharge switch 8 to be operated again in S6, and when the water discharge switch 8 is turned on, the time t of the timer circuit 14 is determined in 87. And C
PtJlo is 88 when it is determined that time t is less than a predetermined time T (2 minutes in this example).
In S9, "1" is added to the count register, and in S9 it is determined whether the count number N in the counter register 13 is less than 5, which is the predetermined number of times of water spraying in this embodiment.

If the cpuio determines that N<5 in S9, it outputs a control signal to the second water discharge amount control circuit 16 in step 310, and excites and drives the solenoid valve 3 to discharge a small amount of sound-muffling or small-use cleaning water. water and return to S6.

When the CPU 10 determines that t>l in S7, the CPU 10 determines the third water discharge amount υ1lil1 circuit 17 in 811.
outputs a control signal to the solenoid valve 3 to excite and drive the solenoid valve 3 to discharge a large amount of cleaning water, and also outputs a control signal to the count register 13.
is reset to rOJ and returns to S6.

Further, when the CPU 10 determines in S9 that the number of times of water spraying N is 5, which is the predetermined number of times of water spraying,
Perform 1 or less actions.

Note that when the water discharge switch 8 is not turned on in S6, the CPU 10 determines whether an exit detection signal has been output from the exit sensor 9 in S12, and if it is determined that the exit detection signal has not been output, the CPU 10 returns to S6. Return to

Conversely, when the CPU 10 determines in S12 that the exit sensor 9 has output an exit detection signal, the CPU 10 returns to $1 and resets the count register 13 to rOJ.
2. Wait for a new user.

Further, the CPU 10 determines in S3 whether or not the water discharge switch 8 has been operated, and if it is determined that the water discharge switch 8 has not been operated on, the CPU 10 determines in S13 whether or not the exit sensor 9 has outputted an exit detection signal in 83. If it is determined that the output has not been output, the process returns to S2. vice versa,
If the CPU 10 determines that the exit sensor 9 is outputting an exit detection signal in S13, this means that the user left the room without using the water spray operation, so the CPU 10 determines that the exit sensor 9 is outputting an exit detection signal. In this step, the second water discharge amount control circuit 16 and the solenoid valve 3 are operated to discharge a small amount of water for small use, and the process returns to Sl (automatic water discharge).

Therefore, when the water spray switch 8 is operated for the first time after the exit sensor 9 is activated, the CPtJ 10 first performs etiquette cleaning in S4, and the water discharge switch is operated at $6 within a predetermined time 1 from the time of said operation. Further, when the count number N in the count register 13 is less than 5, water is sprayed at 810, and
When "1" is added to the count register 13 and the water discharge switch is operated after a predetermined time T, water is discharged into the large river at 811, and the count register 13 is set to rO.
Reset to J.

Also, if the number of times of watering reaches the predetermined number of times of watering, which is 5, based on the count number N in the count register 13 within the above time 1, water is sprayed into the large river in S11, and the count register 13 is set to rOJ. Reset.

Therefore, using the etiquette washing as a reference for the time when use is started, large or small washing water can be accurately selected and flushed based on the operation of the water discharge switch 8 at that time according to the operation time. Furthermore, if the count number N in the count register 13 is already 5 when the water discharge switch 8 is operated in S6, water is discharged into the large river in 311, the count register 13 is reset, and the count number N is changed to "○".
”. Therefore, even within the predetermined time 1,
If the water is released for the fifth time, the washing water from the large river will flow.
There is no fear that the filth cannot be completely flushed away.

Further, when CPtJlo determines that the exit sensor 9 has worked in 313, it outputs a control signal to the second water discharge amount control circuit 16 in 814, and excites and drives the solenoid valve 3 to dispense a small amount of cleaning water. To keep a flush toilet bowl 1 clean by spraying water for small use (automatic water discharge) even if the user does not operate the water discharge switch 8 even after using the room and leaving the room so as to discharge water and stop the flushing. Can be done.

(Second Embodiment) Next, a second embodiment embodying the present invention will be described with reference to the flowchart shown in FIG. 4 regarding the differences from the previous embodiment.

In the above embodiment, the CPU 10 stores in the count register 13 the number of times water has been sprayed from the time the exit sensor 9 is activated until the exit sensor 9 is activated again by a new user, and when the user changes, the count is started. The register 13 was reset, but in this embodiment, the number of consecutive small water sprays is stored in the count register 13, and the count register 13 is reset when the large river water is sprayed. It has become.

That is, when the power is turned on, the CPU 10 resets the count register 13 to rOJ in 315, and then resets the S
At step 16, the presence sensor is turned on, and when it is determined that it is turned on, it is determined at step 517 whether or not the water discharge switch 8 is turned on. When determining that the water discharge switch 8 has been turned on, the CPU 10 causes the timer circuit 14 to start measuring time in S18.

Then, the CPU 10 adds "1" to the count register 13 in S19, and if it is determined in S20 that the count number N in the count register 13 is less than 5 times as the predetermined number of times of water spraying, the CPU 10 adds "1" to the count register 13 in S21.
The water spray amount control circuit 16 drives the electromagnetic valve 3 to spray a small amount of water for etiquette cleaning, and adds "1" to the count register 13. Next, the CPU 10 determines in 822 whether or not the water discharge switch 8 has been turned on, and if it is determined that the water discharge switch 8 has been turned on, the CPU 10 goes to S23 in which the measurement time t of the timer circuit 14 is set to a predetermined time T (in this embodiment, 2
(minutes) has elapsed, and if it has not elapsed, perform the processing from 319 onwards.

The CPU 10 registers the count register 13 in S19.
"1" is added to the count register 1 in S20.
If it is determined that the count number N in 3 has already reached 5 times, the Okawa water is discharged in S24, the count register 13 is reset to rOJ, and the process moves to steps 822 and subsequent steps. Further, when the cpuio determines in S23 that the measured time t is after the elapse of the time T, it performs the process of S24, discharges water from the large river, and moves on to the process from 322 onwards. moreover,
If it is determined in step 323 that the measured time t is before time T, the process moves to step 5191X.

If the CPU 10 determines in step 822 that the water discharge switch 8 is not turned on, it determines in step S25 whether the exit sensor 9 is turned on, and repeats the processing operation returning to step S22 until it is turned on. And the above 325
31 when it is determined that the exit sensor 9 is turned on.
Return to 6.

Further, the CPU 10 determines whether the leaving sensor 9 is turned on again in S26 unless the water discharge switch 8 is turned on in 317, and returns to 816 unless it is turned on. If cpuio determines that the exit sensor 9 has been turned on again in S26, this means that the user left the room without spraying water even though the user used the room and left the room. Water flow control circuit 1
6 to perform small water spraying (automatic water spraying), add "1" to the count register 13, and return to S16. In addition,
In this S27, "1" is set for the count register 13.
It may be implemented without adding .

Therefore, in this embodiment, after a predetermined period of time has elapsed since the first water spraying by a new user after the user leaves the room, water is sprayed into the large river and the count register 13 is reset to rOJ. Furthermore, even before the predetermined time has elapsed, if the small water spray is repeated a predetermined number of times (5 times), the large river water is sprayed and the count register 13 is reset to "○j".

Note that the present invention is not limited to the above-mentioned embodiments, and the processing (automatic water spraying) according to 814 or 327 may be carried out as water spraying into a large river, or the water spraying operation may be omitted and carried out.
Alternatively, if the exit sensor outputs the exit detection signal within 2 minutes after the presence sensor is turned on, the water spraying operation may not be performed in order to save water.

Also, changing the predetermined time T1 or the number of times N of water spraying,
Etiquette cleaning can be carried out with the same amount of water as for small errands, the amount of water sprayed can be changed as appropriate, or it can be implemented in a Western-style flush toilet, etc., as long as it does not deviate from the spirit of this invention. You may change it to

Effects of the Invention As detailed above, in the first invention, the water discharge amount control means performs a water discharge operation that matches the user's usage pattern in an actual flush toilet based on the user's operation of the operation switch and the operation time. This allows washing water to flow without wastage. Furthermore, in the second invention, the first invention
In addition to the effects of the invention, when the number of water sprays reaches the predetermined number of water sprays regardless of the operating time, a large amount of washing water is sprayed, so that the filth can be reliably flushed away, which is a superior effect for industrial use. .

[Brief explanation of the drawing]

1 to 4 show an embodiment embodying the present invention, in which FIG. 1 is an electrical block circuit diagram, FIG. 2 is a road body diagram of a water discharge device, FIG. 3 is a flowchart, and FIG. is a flowchart diagram showing the operation of the second embodiment. DESCRIPTION OF SYMBOLS 1... Flush toilet, 6... Water discharge means, 8... Water discharge switch, 9... Exit sensor, 10... Central processing unit (CPU), 11... ROM, 12... RAM ,1
3...Count register, 14...Timer circuit, 1
5... 1st water discharge amount control circuit, 16... 2nd water discharge amount control circuit, 17... 3rd water discharge 8 control circuit.

Claims (1)

[Scope of Claims] 1. Water discharging means for discharging flushing water into the toilet bowl, operating means for activating the water discharging means to start discharging flushing water into the toilet bowl, and detecting the exit of a user. a timer operating means for causing a timer to perform a measuring operation when the operation means is operated for the first time after the exit detection means detects exit; and after the exit detection means detects exit; When a new user operates the operating means for the first time, a small amount of etiquette washing water is discharged, and the time measured by the timer (t
), by operating the operating means within a predetermined time (T), a small amount of sound-muffling or small-use washing water is discharged, and by operating the operating means after the elapse of the aforementioned time (T), A water saving device for a flush toilet, comprising a water discharge amount control means for controlling the water discharge means to adjust the amount of water discharged so as to discharge a large amount of flush water. 2. Water discharging means for discharging flushing water into the toilet bowl; operating means for activating the water discharging means to start discharging flushing water into the toilet bowl; exit detection means for detecting the exit of the user; a timer operating means for operating a timer when the operation means is operated for the first time after the exit detection means detects exit; a counting means for counting the number of times a small amount of washing water is sprayed; and the exit detection means. After the exit is detected by the means, when the operating means is operated for the first time by a new user, a small amount of etiquette washing water is discharged, and the time measured by the timer (t
), depending on the operation of the operating means within the elapse of a predetermined time (T), a small amount of sound muffling or small-use washing water is discharged, and the operation of the operating means after the elapse of the predetermined time (T). This water saving device for a flush toilet comprises a water discharge amount control means which discharges a large amount of flush water depending on the situation and further discharges a large amount of flush water when the number of times (N) of water discharge reaches a predetermined number of times of water discharge. 3. The water saving device for a flush toilet according to claim 2, wherein the counting means is reset when the exit detection means detects exit. 4. The water saving device for a flush toilet according to claim 2, wherein the counting means is reset when a large amount of flush water is discharged.