JPS6367339A - Water saving apparatus 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, for example, flush valve type and tank type flushing devices installed in flush toilets either flush a fixed amount of water regardless of the size of the toilet, or they do not dispose of water regardless of the size of the toilet. The distinction had to be made by human operation.

(Problem to be solved by the invention) Especially in women's flush toilets, a large amount of flushing water is flushed regardless of the size of use.Recent research has shown that flush toilets for women flush water once (hereinafter referred to as The result is a second spray of water (sound-reducing or odor-eliminating water) while you are relieving yourself, and then a water spray for cleaning (hereinafter referred to as "main washing"). Regarding the type of use, less than 10% of the use was for large size, and most of them were for small use. In this way, considering the frequency of flushing water, it can be said that a large amount of water is wasted. There was a problem that the longer the time spent in the room, the more water needed to be sprayed.

The purpose of this invention was made in view of the above-mentioned conventional circumstances, and is to provide a water saving device for flush toilets that can reduce the amount of water used for large-scale use to the minimum necessary, thereby saving total water usage. It is about providing.

(Means for Solving the Problems) The flush toilet flushing device of the present invention includes a water spraying means for spraying flushing water into the toilet bowl based on a water spraying control signal, an entry/exit detection means for detecting entry/exit, and a timer means for measuring the occupancy time from the entry detection to the exit detection by the entry/exit detection means; the occupancy time t measured by the timer means when the entry/exit detection means detects leaving the room; and a preset setting time. and when the room occupancy time comparison and judgment means determines that the occupancy time t exceeds the set time T, the occupancy time comparison and judgment means sends a large water discharge control signal based on the judgment result. A necessary water discharge control means is provided to output water to the water discharge means. Furthermore, a number of people detection means detects the number of users who have entered the room, and when the room occupancy time comparison and determination means determines that the room occupancy time t is within the set time 1, based on the detection by the number of users detection means. A number counting means for counting the number of users n, an operating means for discharging water into the toilet bowl, and whether the number of people counted by the number counting means reaches a preset number N each time the operating means is operated. The gist of the invention is that it is provided with a number comparison determination means for determining whether or not the number of people is present, and a size discrimination control means for selectively outputting a small or large water discharge control signal to the water discharge means based on the determination result of the number comparison and determination means. That is.

(Function) When the user enters the toilet, the timer means measures the time the user is in the room from the time when the entry/exit detection means detects the user entering the room until the time when the user exits the room. When the user leaves the room, the occupancy time comparison and determination means compares and determines the occupancy time t and a preset time T. Then, the occupancy time t is the set time T
When the occupancy time comparison determination means determines that the occupancy time has exceeded
Based on the determination result, the necessary water spray control means outputs a large water spray control signal to the water spray means, and the water spray means sprays large water for washing based on the signal.

Further, when the room occupancy time comparison and determination means determines that the room occupancy time t is within the set time 1, the number of people counting means counts the number of users n based on the detection by the number of people detection means.

Furthermore, when the user operates the operating means while in the room, each time the operating means is operated, it is determined by comparing the number of people whether or not the counted number of people n counted by the number of people counting means has reached the preset number of people N. The means determine. and,
Based on the determination result of the number of people comparison and determination means, the size discrimination control means selectively outputs a small or large water spray control signal to the water spray means.

(Example) Hereinafter, an example in which the present invention is embodied in a valve-type flush toilet will be described with reference to FIGS. 1 to 3.

1 is a Japanese-style flush toilet, 2 is a water discharge pipe for discharging water to the toilet bowl 1, and 3 is an electromagnetic valve as a water discharge means provided in the water discharge pipe 2, and together with the water discharge pipe 2 constitutes a water discharge device 4. 5
Reference numeral 1 denotes an entry/exit room sensor installed in the lock of the toilet door (not shown) as a means for detecting the number of people and a means for detecting entry/exit, and is composed of a limit switch. The entry/exit sensor 5 is turned on when a user who enters the room locks the room, and is turned off when the user unlocks the room. Reference numeral 6 denotes an operation switch as an operation means for discharging water from the water discharging device 4, and is provided on a wall or the like in the toilet.

Next, the electrical configuration of this water saving device will be explained.

7 is a central processing control unit (hereinafter referred to as CPI) as a timer means, a room occupancy time comparison and determination means, a number of people comparison and determination means, a large water spray control means, a number of people counting means, and a size discrimination control means.
J) and is equipped with a timer circuit (not shown). 8 is a read-only memory (ROM) storing a control program for controlling and driving the CPU 7, and 9 is a readable and writable memory (RAM) for temporarily storing the results of calculations. Reference numeral 11 denotes a drive circuit, which excites and drives the electromagnetic valve 3 based on a control signal from the CPU 7.

Next, the operation of the water saving device constructed as described above will be explained according to the flowchart shown in FIG.

When the power switch (not shown) is turned on, the CPU 7
The count register etc. of AM9 are reset to "0", and various registers and various memories are reset (step 1, hereinafter step is represented by S). Next, it is determined whether the entry/exit sensor 5 is turned on, that is, whether the user enters the room and locks the door (S2).

When the user enters the room and locks the room, the entry/exit sensor 5 is turned on, and the CPU 7 starts measuring the occupancy time t based on the reference pulse signal from the timer circuit based on this on signal (S3). Then, in S4, the CPU 7 determines whether the entry/exit sensor 5 has detected leaving the room, that is, whether the door has been unlocked and the selected room sensor 5 has been turned off.

Then, when the user operates the operation switch 6 while entering the room, the determination in S4 is N0 based on the ON signal generated by the operation.
The determination in 1S5 is YES, and in S6 the CPU 7 reads out the count register A to read out the counted number of people n.
The counted number of people n is compared with a set number of people N stored in advance in the ROM 8 (in this embodiment, the seventh person is targeted). Since this counted number of people n is initially smaller than the set number of people N, the determination in S6 is NO, and based on this determination result, the CPU 7 outputs a small water spray control signal to the drive circuit 11 in S7. Then, the electromagnetic valve 3 is driven and controlled by the drive circuit 11, and is excited for a predetermined time t2 (that is, 3 seconds tl in this embodiment), sprays small-sized cleaning water, and returns to S4.

Therefore, if the number of users is less than the set number N, water will be sprayed only for small use by operating the operation switch 6.

Then, when the user leaves the room, that is, when the entry/exit sensor 5 is turned off in S4, the CPU 7 determines YES, and sets the occupancy time t from the entry detection of the entry/exit sensor 5 until the exit detection, and A comparison is made with the set time T stored in the ROM-8 (SIO).

This set time T (2 minutes and 30 seconds in this embodiment) is set as a time sufficient to cover a large errand.

When the CPU 7 determines that the existing time t≧the set time T, the CPLI 7 outputs a general water discharge control signal to the drive circuit 11 in S11.

Then, the electromagnetic valve 3 is driven and controlled by the drive circuit 11, and is excited for a predetermined time t1 (>t2), discharges a large amount of cleaning water, and returns to Sl.

On the other hand, if the CPU 7 determines in S10 that the room occupancy time t is equal to the set time T, then in 812 it adds "1" to the count register A and returns to S2.

Then, when the Nth person (in this example, the 7th person) enters the toilet from the person who first used this toilet, S2, 33.8
If the user operates the operation switch 6 while entering the room after passing through step 4, the determination in S5 becomes YES, and the determination in S6 also becomes YES.
Then, the process moves to S8. In S8, the CPU 7 outputs a general water discharge control signal to the drive circuit 11. Then, the electromagnetic valve 3 is driven and controlled by the drive circuit 11 and excited for a predetermined time t1 (>t2), and after discharging a large amount of cleaning water, the CPU 7 resets the count register to "0" in S9, and returns to S4. . After that, even if you operate the operation switch 6 again and again, the count register will not change.
0", the determination in S6 is No, and only small water is sprayed in S7.

In other words, if a number of people continue to leave the room within the set time of 1, if the N-thick person operates the operation switch 6 first, a large amount of water will be sprayed based on that operation. When the operation switch 6 is operated, only small water is sprayed.

It is also possible to provide a separate circuit for the steps after the No determination to leave the room in S4, and to return to S4 when a No determination is made in S4.

In this case, by using a separate circuit for the operation switch 6,
Regardless of the detection operation of the selected room sensor 5, a small amount of water is sprayed by the user's operation of the operation switch 6. Therefore,
This allows water to be sprayed during cleaning work.

Note that the present invention is not limited to the above-mentioned embodiments, and the number of people detection means and room entry/exit detection means may be configured separately, or these means may include an infrared sensor, a proximity sensor that detects people entering and exiting, It is possible to use a door switch that detects the opening and closing of a toilet door, an ultrasonic sensor, a temperature sensor that detects a person's body temperature, etc., or to change the set time T as appropriate, without departing from the spirit of the invention. It is also possible to change it arbitrarily.

Effects of the Invention As detailed above, in this invention, even if a number of users leave the room within the set time, a large amount of water will be sprayed by operating the first operation switch of the set number of users. There is no concern that it will become clogged.

In addition, it is possible to prevent users from spraying water only for general use, and to automatically flush water for general use when they leave the room after a set time has elapsed from the sky, making it possible to save total water. The amount of water used for commercial purposes can be kept to the minimum necessary, thereby increasing the effectiveness of industrial use.

[Brief explanation of the drawing]

FIG. 1 is an electrical block circuit diagram of an embodiment embodying the present invention, FIG. 2 is a schematic diagram of a water discharging device, and FIG. 3 is a flowchart diagram. DESCRIPTION OF SYMBOLS 1... Toilet bowl, 2... Water discharge pipe, 3... Solenoid valve as water discharge means, 5... Room entrance/exit sensor, 6... Operation switch as operating means, 7... Timer means, Operation frequency comparison and determination means, occupancy time comparison and determination means, number of people comparison and determination means, 1st. A central processing control unit (CPU) as a second necessary water discharge control means, a number of people counting means, an operation number counting means, and a size discrimination control means, 8... ROM,
9...RAM, 11...Drive circuit. Patent applicant Takamatsu Electric Seisaku Shinshiki Ri
Person Patent Attorney On 1) Hironobu Figure 1 Figure 2

Claims (1)

[Scope of Claims] 1. A water spraying means for discharging flushing water into the toilet bowl based on a water spraying control signal, an entry/exit detection means for detecting entry/exit, and a process from entry detection to room exit detection by the entry/exit detection means. A timer means for measuring the occupancy time, and when the room entry/exit detection means detects leaving the room, the occupancy time t measured by the timer means.
and a room occupancy time comparison and determination means that compares the room occupancy time t with a preset set time T, and when the room occupancy time comparison and determination means determines that the room occupancy time t exceeds the set time T, based on the determination result. large-use water spray control means for outputting a large-use water spray control signal to the water spray means; a number of people detection means for detecting the number of users who have entered the room; a number of people counting means for counting the number of users n based on the detection by the number of people detection means when the time comparison and determination means makes a judgment; an operation means for discharging water into the toilet bowl; and a number of people for each operation of the operation means. A number of people comparison and determination means for determining whether the number of people counted by the counting means has reached a preset number of people N, and a water discharge control signal for small or large use is selected based on the determination result of the number of people comparison and determination means. 1. A water-saving device for a flush toilet, characterized by comprising a size discrimination control means for automatically outputting water to a water discharge means.