JPH0390724A - Cleaning water supply device for toilet bowl - Google Patents

Abstract

PURPOSE:To effectively wash with water and save water by providing a controller to adjust the valve travel of a flow regulating valve for a trap on the basis of a preset flow rate pattern. CONSTITUTION:In a controller 15, whether operation is made for faecess or urine is judged to determine the supply time of prewashing water and the supply time water by siphon. A flow regulating valve 17 for a bowl is put to a small flow rate water supply condition for ventilating water supply for a given time period. The valve 17 is then put to a great flow rate water supply condition for prewashing water supply, and a flow regulating valve 20 for a trap, whose opening degree can be freely altered, is set to a small flow rate water supply condition for ventilating water supply for a given time period while controlling supply of water to ball. At the same as the valve 17 is closed, the valve 20 is put to a great flow rate water supply condition for water supply by siphon, followed by push-in water supply for a given time period. At the same time as the valve 20 is closed, the valve 17 is set to a small flow rate water supply condition for sealing water supply for a given time period.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a toilet flush water supply device having a water supply path to both a trap section and a bowl section of the toilet bowl.

(Conventional technology) After supplying water to the trap drainage channel and discharging filth and sewage,
A cleaning water supply device for cleaning and sealing the bowl by supplying water to the bowl is known from Japanese Patent Publication No. 55-30092.

This cleaning water supply device includes two solenoid valves, one for the bowl portion and one for the trap, and is configured to open each solenoid valve for a preset time.

(Problem to be Solved by the Invention) However, the solenoid valve of such a water supply device only has a fixed opening degree and does not have an adjustment function of changing the opening degree to various sizes. The flow rate control that is performed is the water supply time! II control, it is not possible to adjust the flow rate per unit time, and it is not possible to perform effective water supply control according to the purpose of water supply.

(Means for Solving the Problem) In order to solve the problem, the invention as set forth in claim (1) provides a device for independently supplying flush water to the bowl portion of a toilet bowl and a trap drain. A trap flow rate control valve that adjusts the flow rate of water supplied to the trap, and a control device that adjusts the opening degree of the trap flow rate control valve based on a preset flow rate pattern.

Further, the invention described in claim (2) is such that, in the flow rate pattern of the invention described in claim (1), the flow rate when generating the siphon effect and the flow rate for pushing in waste after the generation of the siphon effect are made different. It becomes.

The invention described in claim (3) provides, in the flow rate pattern of the invention described in claim (1), a small flow rate of air purge water supply for discharging the air in the trap water supply channel, and a water supply for generating a siphon effect. Three kinds of water supply amount are made to be different: siphon water supply and forced water supply for pushing in waste.

(Function) By adjusting the opening degree of the bowl flow rate control valve, flow rate control can be performed based on various flow rate patterns.

Therefore, according to the invention described in claim (2), by making the water supply flow rate for pre-cleaning and the sealing water flow rate different, it is possible to supply water more suitable for each water supply purpose, which improves cleaning, water saving effects, etc. Excellent.

Furthermore, according to the invention described in claim (3), the air can be smoothly removed by setting the water supply flow rate for air removal at a small flow rate, and the water supply flow rate for generating the siphon effect is set at a large flow rate. This allows the siphon action to be carried out effectively and reliably, and furthermore, by setting the water supply flow rate for pushing in dirt to a medium flow rate, it is possible to prevent dirt from being scattered and to effectively perform cleaning and water conservation.

(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a longitudinal sectional view of a toilet bowl equipped with a cleaning water supply device according to the present invention. In the figure, reference numeral 1 indicates a siphon jet type toilet bowl, and the toilet bowl 1 includes a bowl portion 3 separated by a partition wall 2 and a trap drainage channel 4.

The trap drainage channel 4 connects an inlet 5 opened at the lower part of the rear wall of the bowl part 3 and an outlet 6 opened at the rear bottom surface of the toilet bowl 1 by bending it into a substantially inverted U shape. Trap drain 4
The discharge passage 4b on the downstream side of the base 4a, which is the bent part, is formed into a substantially straight pipe shape, and a constricted part 4c is provided at the lower end of the discharge passage 4b. This constriction part 4c makes the inner diameter of the discharge passage 4b
The diameter is reduced in the direction perpendicular to the tube wall of b. In addition,
The constricted portion 4c does not necessarily need to be provided at the position of the outlet 6, which is the lower end of the discharge passage 4b, and may be provided, for example, at a substantially intermediate portion of the discharge passage 4b or at a position downstream from the intermediate portion.

In such a trap drainage channel 4, a large number of protrusions 4d are provided on the pipe wall downstream of the base 4a. In the embodiment shown in FIG. 1, three stages of protrusions 4d are provided that extend around the inner periphery of the tube wall at predetermined intervals. The protrusion 4d is
Although they are arranged at predetermined intervals, as shown in Fig. 2, the phases of the positions where the protrusions 4d... are provided are shifted for each stage so that the cleaning water does not collide with any of the protrusions 4d... , while changing the flow so that it flows down uniformly over the entire circumference of the pipe wall of the discharge path 4c. As a result, cleaning water is supplied to the constriction portion 4c from time to time over the entire circumference, and a stable water film state is generated even at a small flow rate, allowing efficient siphon action.

In the toilet bowl 1 according to this embodiment, a rim passageway 9 is formed in the rim part 8 at the upper edge of the bowl part 3 in an annular shape so as to protrude inward of the bowl part 3, and the bottom surface of the rim passageway 9 Water injection ports 10 are opened obliquely to the bowl part 3 at appropriate intervals. In addition, the rim water passage 9 is connected to the rim water supply N1 at the rear.
Contact 1.

The jet nozzle 12 is attached to the jet nozzle attachment hole at the bottom of the bowl part 3 in a watertight manner via an adhesive or the like, and the jet injection hole 12a of the jet nozzle 12 is connected to the inlet 5 of the trap drainage channel 4. It is oriented approximately at the center of the upwardly inclined conduit from the top to the base 4a. The jet nozzle 12 is made of metal, synthetic resin, or the like, and in this embodiment, the jet nozzle 12 has a hook-like shape.

A box 13 is provided at the rear upper part of the toilet bowl 1, and a cleaning water supply device (hereinafter referred to as water supply device) 14 is housed in the box 13.

The water supply device 14 includes a control device 15 which is a water supply control means,
push button switch 16a for large cleaning and small cleaning;
16b, an operating section 16 which is a washing water amount selection input means for giving a washing start input at the same time as a washing water amount selection input to the control device 15, and a bowl flow rate control valve that controls the water supply to the bowl section 3. 17. Atmospheric release valve 18; Trap flow control valve 20 that controls water supply to the jet nozzle 12 and water supply to the trap drainage channel. Atmospheric release valve 21
It consists of

-14 of the bowl flow control valve 17 is connected to the water supply pipe 23, and the other end is connected to the rim water supply port 11a of the rim water passage chamber 11 via the atmosphere release valve 18.

One end of the trap flow control valve 20 is connected to the water supply pipe 23, and the other end is connected to the jet water conduit pipe 24 via the atmosphere release valve 21.
Connect to one end of the This jet water conduit 24 is made of metal.
Water supply control system 1 using synthetic resin or synthetic rubber pipes
4 and the jet nozzle 12, it is arranged along the rear lower surface of the bowl part 3 so that the length of the jet water conduit pipe 24 is shortened, and the other end of the jet water conduit pipe 24 is connected directly to the jet nozzle 12. Connect to the jet water supply port 12b of the nozzle 12.

FIG. 3 is a block diagram of the water supply device.

The control device 15 includes an input interface circuit 1581, a microprocessor unit (MPU) 15b1, and a memory 15.
It is composed of a c1 timer 15d5 output interface circuit 15e, and the input interface 15a includes an operation section 16.
is connected to the output interface circuit 15e, and a bowl flow rate adjustment valve #-17 and a trap flow rate adjustment valve 20 are connected to the output interface circuit 15e.
is connected.

The operating section 16 includes push button switches 16a and 16b for large cleaning and small cleaning, and the opening and closing of these switches is input to the control device through an activation signal line 16c.

Bowl flow control valve and trap flow control valve 17
．． 20 uses, for example, a pulse motor for each drive source, and the opening degree is determined according to the number of pulses. 17a, 20
A is a signal line for driving each control valve 17, 20, respectively.

Next, the operation of this embodiment will be explained with reference to the time chart of FIG. 4 and the flow chart of FIG. 5.

As is clear from the time chart shown in FIG. 4, in this embodiment, the water supply pattern to the bowl part and the trap drainage channel is determined respectively. Air purge water supply 30 is carried out at a small flow rate to eliminate water, then pre-cleaning water supply 31 is carried out at a large flow rate to swirl the water accumulated in the bowl and increase the cleaning power, and then after that, after water is forced into the trap drainage channel as described later. There are three types of water supply 32 for water sealing of the bowl portion.

On the other hand, the water supply pattern to the trap drainage channel is as follows: Air purge water supply 33 is performed at a small flow rate to eliminate air in the jet water conduit 24, which is the trap water supply channel, and then a large flow rate is performed to cause a siphon effect to increase cleaning power. There are three types of water supply: a siphon water supply 34 which is carried out at 100 mA, and a forced water supply 35 which is then carried out at a medium flow rate to force the waste into the trap drain.

Two types of water supply patterns are defined, one for urination and one for urination, based on the signal from the operation unit.The water supply time for pre-washing and siphon water for urination is longer than that for urination, and the cleaning power is improved. At the same time, efforts have been made to conserve water when urinating.

Hereinafter, the operation of this embodiment will be explained according to the fifth flowchart. In FIG. 5, for the sake of simplicity, the bowl flow rate control valve is referred to as a bowl valve, and the trap flow rate control valve is referred to as a trap valve.

First, it is determined whether the operation for urination or urination has been performed based on the activation signal from the operation section, and based on this determination, the pre-cleaning water supply time t2 and the siphon water supply time t3 are determined (
SL). Next, the flow control valve for the bowl is set to a small flow water supply state, and water is supplied with air removed for a predetermined time t1 (S2.S
3). This time t1 is given in advance, and the timer 15
Start the d at the same time as water supply and count. When the predetermined time t1 has elapsed, the bowl flow rate control valve 20 is then set to the high flow rate water supply state to perform pre-cleaning water supply that swirls the accumulated water in the bowl (S4), and at the same time, the trap flow rate control valve 20 is switched to the small flow rate water supply state. The trap drainage channel is opened to vent air and water is supplied (S5). These water supplies are performed over the predetermined time t2 determined in the step (Sl) (S6). After time t2 has elapsed, the bowl flow rate control valve 17 is closed (
S7) While the pre-cleaning water supply is stopped, the trap flow control valve 20 is opened to a large flow water supply state, and siphon water supply is performed for a predetermined time t3 (S8 to S9).

Thereby, the cleaning water is vigorously jetted into the trap drainage channel 4 from the jet injection hole 12a of the jet nozzle 12. Therefore, the amount of cleaning water flowing over the base 4a of the trap drainage channel 4 and flowing into the discharge channel 4b increases, and the force of the cleaning water also becomes stronger.

The cleaning water that has exceeded the base 4a collides with the protrusions 4d provided on the inner wall of the discharge passage 4b, and while changing the flow, it flows down over the entire circumference of the pipe wall of the discharge passage 4b, and flows down to the constriction part. 40
Forms a water film on the area. Due to the occurrence of this water belly, the inside of the trap drainage channel 4 is cut off from the atmosphere, and as the upstream side of this water belly is filled with wash water, the air inside the trap drain channel 4 is discharged together with the wash water through the outlet 6 (not shown). It is discharged to the pipe side. For this reason, the trap drainage channel 4
Negative pressure is generated inside, and the standing water 25 in the bowl part 3 is drawn into the trap drainage channel 4 (the interior of the trap drainage channel 4 becomes a complete siphon state filled with washing water).

This siphon state continues for a while even after time t3 has passed, and at this time, the trap flow rate control valve is set to a medium flow water supply state and forced water supply is performed (sio).

After this forced water supply is performed for a preset time t4 (Sll), the control device closes the trap flow rate control valve 20 (S12). Then, at the same time as closing the trap flow rate control valve, the bowl flow rate control valve 17 is opened again to a small flow water supply state, and after sealing water supply for time t5 (S13, 514), the bowl flow rate control valve 17 (S15).

This completes the series of water supply controls shown in FIG.

Note that the water supply pattern of the present invention is not limited to this embodiment. For example, in this embodiment, the siphon water supply 34 is started after the pre-cleaning of the bowl part, but the water supply pattern of the present invention is not limited to the present embodiment. may be done.

Further, in this embodiment, the trap flow rate control valve 20 is configured to control the water supply to the jet nozzle, but the present invention is not limited to such control of the jet nozzle, and for example, as shown in FIG. Instead of the jet nozzle shown, a shower 7 may be provided, and the water supply to the shower 7 may be controlled.

The shower 7 is installed in the trap drain on the downstream side of the base of the trap drain 4, and by sprinkling water from this shower, a negative pressure is created in the trap drain, and this negative pressure causes flushing water to flow into the toilet bowl. It is drawn into the trap drainage channel and easily causes a siphon action to enhance the cleaning effect. Further, an on-off valve may be used instead of the bowl flow rate control valve 17.

In FIG. 6, objects similar to those in FIG. 1 are given the same reference numerals.

(Effects of the Invention) As is clear from the above explanation, the present invention controls the water supply to the bowl part by a trap flow rate control valve whose opening degree can be freely changed, so that a predetermined flow rate pattern is achieved. It becomes possible to control the flow rate based on the flow rate, thereby increasing the cleaning effect and water saving effect.

According to the invention described in claim (2), while the siphon water supply when generating the siphon action is made to have a large flow rate,
By setting the flow rate for pushing and collecting dirt to a medium flow rate, for example, it is possible to effectively generate a siphon while preventing dirt from flying up, and the cleaning power is excellent.

Furthermore, the invention as set forth in claim (3) makes it possible to prevent dirt from splashing up by making the air purge water supply for discharging the air in the trap water supply channel a small flow rate, thereby further enhancing the above-mentioned effect. Not only that, but it also has an excellent water-saving effect.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a toilet bowl equipped with a cleaning water supply device according to the present invention, Fig. 2 is a sectional view taken along line II-II in Fig. 1, Fig. 3 is a block diagram of the water supply device, and Fig. 4 is FIG. 3 is a time chart showing the operation of the water supply device, FIG. 5 is a flowchart of the same, and FIG. 6 is a vertical sectional view of a toilet bowl showing another embodiment of the present invention. In addition, in the drawing, 1 is a toilet bowl, 3 is a bowl part, 4 is a trap drainage channel, 9 is a rim water passage, Ila is a rim water supply port, 12 is a jet nozzle, 14 is a cleaning water supply device (water supply device),
15 is a control device which is a water supply control means; 16 is an operation unit; 1
6a and 18b are push button switches for large and small cleaning,! 7 is a flow control valve for the bowl, and 20.20a is a flow control valve for the trap.

Claims (3)

[Claims] (1) A device for independently supplying flush water to the bowl of a toilet bowl and a trap drain, which includes a trap flow control valve that adjusts the flow rate of water supplied to the trap drain;
A cleaning water supply device comprising a control device that adjusts the opening degree of a trap flow control valve based on a preset flow rate pattern. (2) The toilet bowl cleaning water supply device according to claim (1), wherein the flow rate pattern is such that the flow rate for pushing in waste after the siphon effect is smaller than the flow rate when the siphon effect is generated. . (3) The flow rate pattern includes a small flow rate of air removal water supply for discharging the air in the trap water supply channel, a large flow rate of siphon water supply for generating a siphon effect, and a medium flow rate of push water supply for pushing in waste. The toilet bowl cleaning water supply device according to claim 1, characterized in that: