JPS6367338A - 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 cleaning devices installed in flush toilets either flush water for a certain period of time regardless of the size of the toilet, or they do not allow water to flow for a certain period of time regardless of the size of the toilet. The distinction was made to be selected through human operations.

(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 When you are relieving yourself, you spray water a second time (sound-reducing or odor-eliminating water spray), and then spray water for washing (hereinafter referred to as main washing). As for the type, less than 10% of the usage is of large size.
Most of them were used briefly. In this way, even in terms of the frequency of flushing water, a large amount of water is wasted, and the longer the time spent in the room, the greater the amount of water being sprayed.

The purpose of this invention was made in view of the conventional situation as described above, and is to provide a water-saving device for a flush toilet 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) A water saving device for a flush toilet according to the present invention includes 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 an entry/exit detection means for detecting entry/exit. a timer means for measuring the occupancy time from room entry detection to exit detection by the exit detection stage; an operation means for discharging water into the toilet bowl; and an operation number counting means for counting the number of operations each time the operation means is operated. , an operation number comparison and determination means for comparing the number of operations m counted by the operation number counting means and a preset set number M for each operation of the operation means; water spray control means that selectively outputs a water spray control signal for business or large use to the water spray means; and when the entry/exit detection means detects leaving the room, the occupancy time t measured by the timer means and the 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 first large-use water spray control means for outputting to the water spray means; a number of people detection means for detecting the number of users who have entered the room; and 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 room occupancy time comparison and determination means determines that the room occupancy time t does not exceed the set time T, the number of people counted by the number of people count 1 means is compared with the preset number of people N; and a second large-use water spray control for outputting a large-use water spray control signal to the water spray means based on the judgment result when the number comparison and judgment means judges that the counted number of people has reached the set number of people N. The gist of this is to provide means and preparations.

(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. When the room occupancy time comparison and determination means determines that the room occupancy time t is longer than the set time T,
Based on the determination result, the first large 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, the number of people counting means counts the number of users present in the room based on the detection by the number of people detection means, and if the time t of the user does not exceed the set time T when the user leaves the room, the number of users is counted as being present in the room. When the time comparison and determination means makes the determination, the number of people comparison and determination means compares the number of people n counted by the number of people counting means with a preset number of people N. Then, the counted number of people n becomes the set number of people N1. When the number of people comparing and determining means determines that the number of people has reached the number of people, the second large-scale water spraying control means outputs a large-scale water spraying control signal to the water spraying means based on the judgment result.

Further, the operation number counting means counts the number of operations each time the operation means is operated by the user, and the operation number comparison and determination means compares the number of operations m counted by the operation number counting means and a preset set number M. Compare with. The water spray control means selectively outputs a small or large water spray control signal to the water spray means based on the determination result of the operation frequency comparison and determination 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.

Reference numeral 5 denotes a room entry/exit sensor as a means for detecting the number of people and a means for detecting entry/exit, which is provided on the lock of the toilet door (not shown), and is composed of a mitt 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.

Reference numeral 7 indicates a timer means, a comparison and determination means for the number of operations, a means for comparing and determining the occupancy time, a means for comparing and determining the number of people, and a first. A central processing control 11 device (hereinafter referred to as a second large-scale water spray control means, a number of people counting means, an operation number counting means, and a water spray control means)
The CPU is equipped with a timer circuit (not shown). 8 is a read-only memory (ROM) storing a control program for controlling and driving the CPtJ7, and 9 is a readable and writable memory (RAM) for temporarily storing performance results.11 is a drive circuit which excites and drives the electromagnetic valve 3 based on a control signal from the CPU 7.

Next, we will explain the operation of the water saving device ffi configured as described above in the third section.
The explanation will be given according to the flowchart shown in the figure.

When the power switch (not shown) is turned on, the CPU 7
Count register A of AM9 is reset to "0" and various registers and various memories are reset (step 1 (hereinafter step will be referred to as S)), and count register B is reset to rOJ in step S2. 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 (S3).

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 (S4). Then, in S5, 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 entry/exit sensor 5 has been turned off.

Then, when the user operates the operation switch 6 while entering the room, the determination in S5 is No based on the on signal generated by the operation.
, S6 becomes YES, and the CPU 7 adds "1" to the count register B in S7. And C.P.
At tJ7, the number of operations m counted by the count register B in S8 is read out, and the number of operations m is compared with the set number of times M stored in advance in the ROM8. This operation number m
is initially less than the set number of times M, so the determination in S8 is NO.
Based on this determination result, the CPU 7 outputs a small water spray control signal to the drive circuit 11 in S9. Then, the electromagnetic valve 3 is driven and controlled by the drive circuit 11, and is excited for a predetermined time t2 (in this embodiment, 3 seconds tl), sprays small-sized cleaning water, and returns to S5.

Returning to S5, when the user operates the operation switch 6 a plurality of times, steps 85 to S9 are repeated, and as a result, the number of operations m becomes m≧M in S7. Then, the determination in S8 becomes YES, and based on this determination result, the CPU 7 outputs a large water discharge control signal to the drive circuit 11 in S10.

Then, the electromagnetic valve 3 is driven and controlled by the drive circuit 11 and is excited for a predetermined period of time t1 (>t2>), sprays a large amount of cleaning water, and returns to S5. Therefore, the number of operations v1m of the operation switch 6 is equal to the set number of times M. After this point, only water will be sprayed on a regular basis.

Then, when the user leaves the room, that is, when the entry/exit sensor 5 is turned off in S5, the CPU 7 determines YES, and calculates 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 (S11).

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

When the CPU 7 determines that the in-room time t≧the set time T, in 812, the number of operations m stored in the count register 8 up to the time of leaving the room is compared with the set number M stored in the ROM 8 in advance.

If it is determined in S12 that the number of operations m is not m2M, the CPU 7 outputs a large water discharge control signal to the drive circuit 11 in S13. Then, the electromagnetic valve 3 is driven and controlled by the drive circuit 11 for a predetermined time t1 (>t2)
It is excited, discharges a large amount of cleaning water, and returns to Sl.

On the other hand, when the CPU 7 determines that the occupancy time t<the set time T in S11, "1" is added to the count register A in S14, and in 315, the counted number of people n counted in the count register A is read out, The count person fin and the set number of people N (pre-stored in ROM8)
In this example, there are 7 people).

Since this counted number of people n is initially smaller than the set number of people N, the determination at 815 is NO, and the control program returns to S2. Further, when the number of users increases and n≧N in S15, the determination in S15 becomes YES and the process moves to 813. That is, when the set number of people N is reached, a large amount of water will be sprayed when that person leaves the room.

Further, in 812, when the user operates the operation switch 6 a set number of times M or more while in the room, the process moves to 314. Therefore, if the user is the Nth user, 814, S15, S
The regular water spray will be performed through step 13, and if the person is not the N person and leaves the room even if the occupancy time t is equal to or longer than the set time 1, the regular water spray will not be performed.

As described above, in this embodiment, when the number of times the operation switch 6 has been operated up to the time of leaving the room m is equal to or greater than the set number of times M, water is not sprayed in large quantities, so that water can be saved.

It is also possible to use a separate circuit for the steps after the "No" decision to leave the room in S5, and to return to S5 when the "No" decision is made in S5.

In this case, by using a separate circuit for the operation switch 6,
Regardless of the detection operation of the entry/exit 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, the present invention prevents large amounts of water from being discharged when the user operates the operation switch less than the set number of times.
When the user leaves the room after a set time has elapsed from Ozora, the cleaning water for cleaning can be automatically flushed out, making it possible to save total water and reducing the amount of water used for cleaning to the minimum necessary. Furthermore, in the case where there are multiple users who spend only a short time in the room, even if only small wash water is continuously supplied by the operation switch of the user, the predetermined number of users When a person leaves the room, a large amount of water can be sprayed, and there is no concern that filth will become clogged with it, making it suitable for 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... Entry/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, first. A second large-scale water spray control means, a number of people counting means, an operation number counting means, and a central control device D (CPLI) as a water spray control means, 8... ROM,
9...RAM, 11...Drive circuit.

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 occupancy time; an operation means for discharging water into the toilet; an operation count means for counting the number of operations each time the operation means is operated; and an operation count means for counting the number of operations for each operation of the operation means. operation number comparison and determination means for comparing the counted number of operations m with a preset set number of times M, and a water discharge control signal for selectively discharging water for small or large use based on the determination result of the operation number comparison and determination means. an occupancy time comparison and determination means for comparing an occupancy time t measured by the timer means with a preset time T when the room entry/exit detection means detects leaving the room; When the room occupancy time comparison and determination means determines that the room occupancy time t exceeds the set time T, a first large-use water spray control means outputs a large-use water spray control signal to the water spray means based on the judgment result. 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; a number of people comparison and determination means that compares the number of people counted by the number of people n by the number of people counting means and a preset number of people N when the said occupancy time comparison and determination means determines that the number of people who are in the room has not reached the set number of people N; and second large-use water discharge control means for outputting a large-use water discharge control signal to the water discharge means based on the judgment result when the number of people comparison and determination means judges. Device.