JPH0390741A - Cleaning water supply device - Google Patents

Abstract

PURPOSE:To clean up a toilet bowl by a small amounts of washing water with good efficiency by providing a controller to control the amount of water to supply to a jet nozzle in a prejetted manner before water supply for generating siphonic action. CONSTITUTION:The inlet port 5 of the lower part of the back wall of a bowl part 3 and an outlet port 6 of the central bottom of a toilet bowl 1 are bent into a U-shaped form and connected, where they are formed straightly from the weir 4a to the drain path 4b of a trap drain path 4. A jet nozzle port 13 is formed in the bottom of the bowl part 3 by directing it toward the inlet port 5, and a box 14 is provided on the back side of the toilet bowl 1 to house a washing water supplier 15. A water supply tube 21 is branched into a valve mechanism 18 leading to the rim water supply port 11 and a valve mechanism 19 leading to one end of a jet water conveyance tube 22 through an atmosphere open valve 20 and connected to the jet water supply port 23 on the tip of the nozzle 12. Water is first supplied to the jet nozzle by a controller 16 and then supplied further for generating siphonic action.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to an apparatus for supplying flush water to a toilet bowl.

(Prior Art) FIG. 7 is a vertical sectional view of the bottom of a siphon jet toilet bowl. Washing water is jetted from a jet nozzle 101 provided at the bottom of the bowl part 100 of the toilet toward the rising pipe part 103 of the trap drainage path 102, and this washing water causes a siphon effect in the trap drainage path 102, Techniques for flushing toilet bowls are known.

(Problem to be Solved by the Invention) However, there are cases in which filth exists in a form that blocks the inlet 104 of the riser pipe section 103, and the
If it is located immediately before, the cleaning water flow injected from the injection hole 105 is obstructed, and the siphon effect cannot be efficiently generated. This results in insufficient cleaning of the toilet bowl. Alternatively, a large amount of washing water is consumed because water is supplied for washing multiple times.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a flushing water supply device that can efficiently flush a toilet bowl with a relatively small amount of flushing water.

(Means for Solving the Problems) In order to solve the above problems, the cleaning water supply device according to the present invention includes:
Features (effects) characterized by comprising a control device that controls water supply to perform bridging water supply to the jet nozzle before supplying water to the jet nozzle to generate a siphon action.Based on a cleaning start input. The control device first supplies bridge water to the jet nozzle to crush or move the dirt at the bottom of the bowl. Then, by supplying water to the next jet nozzle, a siphon effect is generated in the trap drainage channel, and the filth and sewage in the bowl are discharged.

(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, 1 is a siphon jet type toilet bowl, and the toilet bowl 1 is divided by a partition wall 2 into a bowl part 3 and a trap drainage channel 4.
has. 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 bottom of the approximately central part of the toilet bowl 1 by bending it in an approximately inverted 0 shape. A discharge passage 4b on the downstream side of the ring portion 4a of the trap drainage passage 4 is formed into a substantially straight pipe shape. A constricted part 4c is provided near the outlet 6 at the lower end of the pipe wall, and a plurality of protrusions 4d are provided on the pipe wall of the discharge passage 4b at predetermined intervals as shown in FIG. They are arranged in a spiral.

A rim water passageway 8 is formed in the rim part 7 at the upper edge of the bowl part 3 in an annular shape so as to protrude inward of the bowl part 3, and rim water injection holes 9 are formed at appropriate intervals on the bottom surface of the rim water passageway 8. The opening is diagonal to the bowl part 3. Further, the rim water passage 8 communicates with a rim water supply chamber 10 at the rear, and a rim water supply port 11 is bored in the upper surface of the rim water supply chamber 1o.

A jet nozzle 12 is attached to the bottom of the bowl part 3 in a watertight manner so that the jet injection hole 13 faces the inlet 5 of the trap drainage channel 4.

A box 14 is provided above the rear part of the toilet bowl 1, and a washing water supply device 15 is housed in the box 14.

The cleaning water supply device 15 includes a control device 16 and this control device 1.
an operation unit 17 that provides a cleaning start input to 6; a bowl valve mechanism 18; a trap valve mechanism 19; and an atmosphere release valve 20.
It consists of

The water supply pipe 21 is branched and connected to one end of each valve mechanism 18 , 19 , and the other end of the bowl valve mechanism 18 is connected to the rim water supply port 11 of the rim water supply chamber 10 .

The other end of the trap valve mechanism 19 is connected to one end of the jet water conduit 22 via the atmosphere release valve 20, and the other end of the jet water conduit 22 is connected to the jet water supply port 23 of the jet nozzle 12. . This jet water guide pipe 22 is made of metal, synthetic resin, or synthetic rubber, and is arranged along the rear lower surface of the bowl portion 3 so that its length is short.

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

The control device 16 includes an input interface circuit 16a, a microprocessor (hereinafter referred to as MPU) 16b, and a memory 1.
6C1 timer 16d and output interface circuit 16
Consists of e. An operating section 17 is connected to the input interface circuit 16a, and valve mechanisms 18 and 19 for the bowl and trap are connected to the output interface circuit 16e.

The operation unit 17 includes a switch for starting flushing of the toilet bowl 1, and opening/closing of this switch is controlled by a start signal line 17.
a is input to the control device 16.

Note that the operation unit 17 may be provided with a plurality of operation buttons so that the supply amount of cleaning water can be selected. In addition, a switch or a sensor for detecting seating may be provided, and these signals may be input to the control device to enable the operation of the operating section 17 only when the user is seated, or to enable a predetermined operation after the seat is changed from the seated state to the non-seated state. It may be configured to automatically start cleaning after a certain period of time.

The bowl and trap valve mechanisms 18 and 19 are composed of electromagnetic on-off valves that open when a predetermined voltage is applied. 18a and 19a are valve drive lines for driving each valve mechanism 18.19.

The memory 16c stores in advance data regarding the water supply order and water supply time of the cleaning water.

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. In addition, the fifth
In the figure, S1 to Sit indicate each step of the flowchart. Further, for convenience of explanation, each valve mechanism 18, 19 will be referred to as a bowl valve and a trap valve.

Upon receiving the activation signal from the operation unit 17, the MPU 16b in the control device 16 activates the timer 16d (S 1 ).
At the same time, the trap valve 19 is driven to an open state via the output interface circuit 16e (S2). This results in
Washing water is sprayed from the jet injection hole 13 and the bowl part 3
If there is dirt etc. at the bottom of the container, crush or disperse it.

The MPUI 6b monitors the elapsed time of the timer 16d, and when the Bridget water supply start time t1 has elapsed (S3), it drives the trap valve 19 to the closed state (S4) and closes the bowl valve 18. is driven to the open state (S5). As a result, the bridge water supply from the jet injection hole 13 is stopped, and the water supply from the rim water injection hole 9 to the bowl part 3 is stopped.
Washing water is supplied to wash the wall surface of the bowl portion 3 and generate a vortex in the stored water 24.

The MPU 16b monitors the elapsed time of the timer 16d, and when the pre-cleaning water supply time t2 from the rim water injection hole 9 has elapsed (S6), it drives the bowl valve 18 to the closed state (S7) and closes the trap. The valve 19 is driven to an open state (S8). As a result, the pre-cleaning water supply is stopped, and cleaning water is injected from the injection hole 13 of the jet nozzle 12 toward the rising pipe section of the trap drainage channel 4. This washing water flows over the ring part 4a and flows into the discharge passage 4b side.
It collides with the protrusion 4d of the discharge passage 4b and flows down into the discharge passage 4b while changing its flow. This washing water causes a water seal to occur at the constriction portion 40 provided near the outlet 6, and the air in the trap drainage channel 4 is discharged together with the washing water from the outlet 6 to a drain pipe (not shown). Therefore, negative pressure is generated in the trap drainage channel 4, and the accumulated water 2 in the bowl part 3
4 is drawn into the trap drainage channel 4, and the trap drainage channel 4 is filled with wash water, creating a complete siphon state.

When this siphon state occurs, the flow rate of the trap drainage channel 4 increases rapidly, and exceeds the supply amount of washing water, so that the discharge of filth and sewage starts.

In this embodiment, even after the siphon effect occurs, the water supply to the jet nozzle 13 is continued to push dirt and waste water into the trap drainage channel 4 (blow effect). On the other hand, in the siphon state, the water level of the stored water 24 is at the lower end 2a of the partition wall 2.
It stops when air flows into the trap drainage channel 4. Thereafter, the bowl part 3 is sealed with water by the cleaning water jetted from the jet injection hole 13. On the other hand, the MPU 16b (S
9), the trap valve 19 is driven to the closed state, and the timer 18 is activated.
d is stopped (Sll). This completes the series of cleaning operations shown in FIG.

The order of water supply for washing is as shown in Fig. 6. After the siphon action is generated, the trap valve 19 is closed, and after the siphon action is completed, the bowl valve 18 is opened to open the rim water injection hole. Water may be supplied from 9 for water sealing.

Further, during the Bridget water supply period, the trap valve 19 may be configured to be repeatedly opened and closed to intermittently inject cleaning water, or the trap valve 19 may be used not as a simple opening/closing valve but as a flow rate regulating valve. The control device 16 may be configured to periodically vary the opening degree of the flow control valve to give strength to the jet flow.

Alternatively, the cleaning water supply device 15 may not be built into the toilet bowl 1, but may be attached to the wall of the toilet.

(Effects of the Invention) As explained above, the cleaning water supply device of the present invention first supplies bridge water to the jet nozzle based on the cleaning start input, crushes or moves the dirt at the bottom of the bowl, and then siphons the water into the jet nozzle. Since water is supplied to generate the siphon effect, the jet flow for generating the siphon effect is not significantly obstructed by dirt, etc., and the siphon effect can be reliably generated. Can be washed.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of a toilet bowl equipped with a cleaning water supply device according to the present invention, FIG. 2 is a cross-sectional view taken along line II-II in FIG. 1, FIG. 3 is a block diagram of the cleaning water supply device, and FIG. 4 5 is a flow chart showing the operation of the control device, FIG. 6 is a time chart showing other water supply orders, and FIG. 7 is a main part explaining the operation of a conventional siphon jet toilet. FIG. 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 injection hole, 11 is a rim water supply port, 12 is a jet nozzle, 13 is a jet injection hole, 15 is a cleaning water supply device, 16 is a control device, 17 is an operating section, 18 is a bowl valve mechanism, 19 is a trap valve mechanism, 21 is a water supply pipe, 2
3 is a jet water supply port. No.

Claims (1)

[Claims] At least in a device that supplies flush water to a jet nozzle of a toilet bowl, the device drives a valve mechanism to first supply water to the jet nozzle and then supply water to generate a siphon action again based on a flush activation input. A cleaning water supply device characterized by being equipped with a control device.