JP2777220B2 - Toilet flush water supply - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flush water supply device for a toilet having a water supply path to both a trap section and a bowl section of the toilet.

(Prior art) Japanese Patent Publication No. 55-30092 discloses a cleaning water supply device in which water is supplied to a trap drainage channel to discharge dirt and wastewater, and then water is supplied to a bowl portion to wash and seal the bowl portion. It is known at

This washing / water supply device is provided with two solenoid valves for a bowl portion and a trap, and each of the solenoid valves is opened for a preset time.

(Problems to be Solved by the Invention) However, since the solenoid valve of such a water supply device does not have an adjusting function of changing the opening to various sizes only with a certain opening, the conventional device has The flow control to be performed is only the control of the water supply time, the flow per unit time cannot be adjusted, and the effective water supply control according to the purpose of water supply cannot be performed.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention is directed to a water supply pipe for supplying flush water to a toilet body, and provided at each flow rate control valve of the branched water supply pipe. And a controller connected to supply water to the drain section and the trap drainage passage, and adjusting the opening of each flow control valve based on a preset opening pattern.

(Operation) Water can be supplied based on the flow rate pattern of each of the bowl portion and the trap drainage channel, so that the washing effect can be enhanced and the water saving effect can be enhanced.

(Example) Hereinafter, an example of the present invention is described based on an accompanying drawing.

FIG. 1 is a longitudinal sectional view of a toilet provided with a flush water supply device according to the present invention. In FIG. 1, reference numeral 1 denotes a siphon jet toilet, and the toilet 1 includes a bowl portion 3 partitioned by a partition 2 and a trap drainage channel 4. The trap drainage channel 4 connects an inflow port 5 formed in a lower portion of a rear wall of the bowl portion 3 and an outflow port 6 formed in a rear bottom surface of the toilet 1 in a substantially inverted U-shape. The trap drainage channel 4 has a substantially straight pipe-shaped drainage channel 4b downstream of the weir portion 4a, which is a bent portion, and has a throttle 4c at the lower end of the drainage channel 4b. The constricted portion 4c is obtained by reducing the inner diameter of the discharge passage 4b in a direction orthogonal to the pipe wall of the discharge passage 4b. The throttle 4c may not necessarily be provided at the position of the water outlet 6, which is the lower end of the discharge path 4b.
It may be provided at a substantially middle portion of 4b or at a position downstream of the middle portion.

In the trap drainage channel 4, a large number of projections 4d are provided on the pipe wall downstream of the weir 4a. In the embodiment shown in FIG. 1, three projections 4d are formed by making the inner circumference of the tube wall make a full circumference at a predetermined interval. The projections 4d are arranged at predetermined intervals. However, as shown in FIG. 2, the phase of the position where the projections 4d...
., And the flow is changed uniformly over the entire circumference of the pipe wall of the discharge path 4b while changing the flow. As a result, the washing water is supplied to the throttle portion 4c substantially uniformly over the entire circumference, a stable water film state is generated even with a small flow rate, and the siphon action can be efficiently caused.

In the toilet 1 according to the present embodiment, a rim water passage 9 is formed in an annular shape on the rim portion 8 at the upper peripheral edge of the bowl portion 3 so as to protrude inward of the bowl portion 3, and the bottom surface of the rim water passage 9 is formed. Water outlets 10 are formed obliquely with respect to the bowl 3 at appropriate intervals. In addition, the rim water passage 9 has a rim water supply chamber 11 at the rear.
Contact

The jet nozzle 12 is attached to the jet nozzle mounting hole at the bottom of the bowl portion 3 in a watertight state via an adhesive or the like. The jet injection hole 12a of the jet nozzle 12 is connected to the inflow port 5 of the trap drain passage 4. It is directed substantially at the center of the upward inclined pipe line from the upper part to the weir portion 4a. The jet nozzle 12 is formed of metal, synthetic resin, or the like. In the present embodiment, the jet nozzle 12 has a hook shape.

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

The water supply device 14 includes a control device 15 as water supply control means, and push button switches 16a and 16b for large cleaning and small cleaning, and provides a cleaning start input to the control device 15 at the same time as a selection input of a cleaning water amount. The operation unit 16 as the washing water amount selection input means, the flow rate control valve 17 for the bowl for controlling the water supply to the bowl unit 3, the atmosphere release valve 18, and the water supply to the jet nozzle 12 are controlled, and the water is supplied to the trap drain passage. A trap flow control valve 20 for controlling water supply and an atmosphere release valve 21 are provided.

One end of the flow control valve 17 for the bowl is connected to the water supply pipe 23, and the other end is connected to the rim water supply port of the rim water chamber 11 through the atmosphere release valve 18.
Connect to 11a.

One end of the trap flow control valve 20 is connected to the water supply pipe 23,
The other end is connected to one end of a jet water pipe 24 via an atmosphere release valve 21. The jet water pipe 24 is a pipe made of metal, synthetic resin or synthetic rubber, and directly connects the water supply control system 14 and the jet nozzle 12.
It is arranged along the rear lower surface of the bowl part 3 so as to shorten the length of the bowl part 3, and the other end of the jet water pipe 24 is connected to the jet water supply port 12 b of the jet nozzle 12.

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

The control device 15 includes an input interface circuit 15a, a microprocessor unit (MPU) 15b, a memory 15c, a timer 1
5d, an output interface circuit 15e, an operation section 16 is connected to the input interface 15a, and a bowl flow control valve 17 and a trap flow control valve 20 are connected to the output interface circuit 15e.

The operation unit 16 includes push buttons 16a and 16b for large washing and small washing, and the opening and closing of these switches is input to the control device via a start signal line 16c.

Flow control valve for bowl and flow control valve for trap 1
For 7,20, for example, a pulse motor is used for each drive source, and the opening is determined according to the number of pulses. 17a and 20a are signal lines for driving the control valves 17 and 20, respectively.

Next, the operation of this embodiment will be described with reference to the time chart of FIG. 4 and the flowchart of FIG.

As is clear from the time chart shown in FIG.
In the present embodiment, a water supply pattern to the bowl portion and the trap drainage channel is respectively defined, and a water supply pattern to the bowl portion is firstly air bleeding water supply 30 performed at a small flow rate to eliminate air in the rim water passage, and then Pre-cleaning water supply 31 performed at a large flow rate in order to swirl the stored water in the bowl portion to increase the cleaning power, and thereafter, sealing water supply 32 for sealing the bowl portion performed after pushing water into a trap drainage channel described later. There are three types of water supply.

On the other hand, the water supply pattern to the trap drainage channel is the air drainage water supply 33, which is performed at a small flow rate to eliminate the air in the jet water pipe 24, which is the trap water supply path, and then the large flow rate is used to cause a siphon action and increase the cleaning power. Siphon water supply 3
4, and then there are three types of feedwater, the push-in feedwater 35, which runs at medium flow to push waste into the trap drains.

In addition, these water supply patterns are defined as two types, one for stool and one for urine, based on the signal of the operation unit.The pre-washing and siphon water supply time for stool is longer than that for urine, and the detergency is improved. At the same time, water savings have been devised for urination.

Hereinafter, the operation of this embodiment will be described with reference to the flowchart of FIG. In FIG. 5, for simplicity, the bowl flow control valve is referred to as a bowl valve, and the trap flow control valve is referred to as a trap valve.

First, it is determined whether the operation for the stool or the urine is performed based on the start signal from the operation unit, and the pre-wash water supply time t2 and the siphon water supply time t3 are determined based on the determination (S
1). Next, the flow control valve for the bowl is set to the small flow water supply state, and air bleed water is supplied for a predetermined time t1 (S2, S3). This time t1 is given in advance, and the timer 15d is activated and counted simultaneously with water supply. After the predetermined time t1 has elapsed, the bowl flow control valve is then set to a large flow water supply state, and pre-cleaning water supply for turning the pool water in the bowl portion is performed (S4). At the same time, the trap flow control valve 20 is set to a small flow water supply state. And water is evacuated and supplied to the trap drain (S5). The water supply is performed over the predetermined time t2 determined in the step (S1) (S6). After the lapse of time t2, the flow rate control valve 17 for the bowl is closed (S7) to stop the pre-wash water supply,
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, S9).

As a result, the washing water is jetted from the jet nozzle 12 a of the jet nozzle 12 into the trap drainage channel 4. Therefore, the amount of the washing water flowing into the discharge passage 4b beyond the weir portion 4a of the trap drainage passage 4 increases, and the momentum of the washing water also increases.

The washing water that has passed over the weir portion 4a collides with a projection 4d provided on the inner wall of the discharge passage 4b, flows down almost uniformly over the entire circumference of the pipe wall of the discharge passage 4b while changing the flow, and the narrow portion 4c portion A water film is generated on the surface. The generation of the water film shuts off the inside of the trap drainage channel 4 from the atmosphere, and as the cleaning water is filled upstream from the water film portion, the air in the trap drainage channel 4 together with the cleaning water flows from the outlet 6 (not shown). It is discharged to the drain pipe side. For this reason, a negative pressure is generated in the trap drainage channel 4, the pool water 25 in the bowl portion 3 is drawn into the trap drainage channel 4, and the inside of the trap drainage channel 4 becomes a complete siphon state filled with washing water. Become.

This siphon state continues for a while after the elapse of the time t3, and at this time, the trap flow control valve is set to the medium flow water supply state, and push-in water is supplied (S10).

After this push-in water supply is performed for a preset time t4 (S11), the control device sets the trap flow control valve 20
Is closed (S12). Then, at the same time as closing the trap flow control valve, the bowl flow control valve 17 is again opened to the small flow water supply state, and after sealing water supply for time t5 (S1
3, S14) The bowl flow control valve 17 is closed (S15).

 Thus, a series of water supply control shown in FIG. 5 is completed.

In addition, the present invention is not limited to the water supply pattern of the embodiment, for example, in this embodiment, the siphon water supply 34 is started after the end of the pre-washing of the bowl portion. You may do it.

Further, in the present embodiment, the trap flow control valve 20 is configured to control the water supply to the jet nozzle. However, the present invention is not limited to such control of the jet nozzle. A shower 7 may be provided instead of the jet nozzle as shown, and the supply of water to the shower 7 may be controlled.

The shower 7 is provided in the trap drainage channel on the downstream side by the weir portion of the trap drainage channel 4, and water is sprayed from the shower to make the pressure inside the trap drainage channel negative. Is drawn into the trap drainage channel to facilitate the siphon action and enhance the cleaning effect.

In FIG. 6, the same reference numerals are given to the same objects as in FIG.

(Effects of the Invention) As is apparent from the above description, the present invention controls the water supply to the bowl portion by the flow control valve for trap, which can freely change the opening degree. The flow rate can be controlled based on the flow rate, and the cleaning effect and the water saving effect can be enhanced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a toilet provided with the flush water supply device according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a block diagram of the water supply device, and FIG. 3 is a time chart showing the operation of the water supply device of FIG. 3, FIG.
FIG. 6 is a longitudinal sectional view of a toilet showing a toilet according to another embodiment of the present invention. In the drawings, 1 is a toilet bowl, 3 is a bowl portion, 4 is a trap drainage channel, 9 is a rim water channel, 11a is a rim water inlet, 12 is a jet nozzle, 14 is a flush water supply device (water supply device), 15 Is a control device serving as water supply control means, 16 is an operation unit, 16a and 16b are push button switches for large and small washing, 17 is a flow rate control valve for a bowl, and 20, 20a are flow rate control valves for a trap.

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shinji Shibata 2-8-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Tochiki Kiki Co., Ltd. No. 1 Tochiki Kikai Co., Ltd. Chigasaki Factory (56) References JP-A-63-22931 (JP, A) JP-A-63-27580 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , (DB name) E03D 11/02 E03D 5/10

Claims (1)

(57) [Claims] A water supply pipe for supplying flush water to a toilet body is branched, and a flow control valve is provided for each of the branched water supply pipes so that water is supplied to a bowl portion and a trap drainage channel of the toilet body. A flush water supply device for a toilet, comprising a control device for adjusting an opening degree of a control valve based on a preset opening degree pattern.