JPH0390743A - Flushing water feeder - Google Patents

Abstract

PURPOSE:To effectively feed water in the water feeding/sealing respectively, by constituting a valve mechanism for jet water with a flow rate regulating valve provided with a water shutting mechanism and controlling the opening degree of the valve to be different respectively in the cases of water feed for generation of syphon action and water feed for sealing water. CONSTITUTION:A valve 18 for a bowl is driven to be in the open condition via an output interface circuit 16e, when a flush start signal is input from an operation part 17, and flush water is supplied from a rim water injection hole 9 to a bowl 3 to clean the wall and cause a vortex in the pool 24. The valve 18 of the bowl is closed after the time (t1) passed and also the valve 19 for jet water is driven to the large flow volume condition. And when a timer 16d of MPU 16b in the controller 16 reaches the time (t2) passed, a jet valve 19 is constricted to feed water for water seal of the bowl 3. And further, after the time (t3) passed the jet valve 19 is shut to complete the flushing water feed cycle. In this way, flushing water can be effectively fed for generation of syphon action and discharging.

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) Cleaning water is supplied to the trap drainage channel to generate a siphon action in the trap drainage channel to discharge dirt and waste water from the bowl section, and then water is supplied to the bowl section to clean the bowl section and seal the water. The cleaning water supply device designed to perform
It is known from Publication No. 0092.

(Problems to be Solved by the Invention) This conventional cleaning water supply device can clean the toilet bowl with a small amount of flushing water, but since the water is supplied to the bowl portion in a sealed manner after filth and sewage are discharged, If dirt, etc. adheres to the wall of the bowl part, it will remain in the sealed water, which is undesirable. Therefore, it is conceivable to reverse the order of water supply, first supplying water to the bowl section, then supplying water to the trap drainage channel to generate a siphon action, and to seal the water after the siphon action is completed. However, in order for the siphon effect to occur, the cleaning water is vigorously jetted so that the cleaning water flows beyond the neck of the trap drainage channel to the drain side, so it is difficult to use this water supply to seal the water. However, most of the water supply flows out to the drainage channel, and only a portion of the water supply is supplied to the bowl, which is inefficient.

The present invention has been made to solve these problems, and it is an object of the present invention to provide a cleaning water supply device that can efficiently supply water for siphon action and drainage.

(Means for Solving the Problems) In order to solve the above problems, the cleaning water supply device according to the present invention includes:
The present invention is characterized by comprising a control device that controls the opening degree of the flow rate control valve to be different when water is supplied for generating a siphon effect and when water is supplied for water sealing.

(Function) First, the control device drives the jet valve mechanism to supply water at a large flow rate. As a result, the cleaning water vigorously jetted from the jet outlet flows over the neck of the trap drainage channel and flows toward the discharge channel side, causing a siphon effect.

Next, the control device throttles the amount of water supplied to the jet nozzle, so that the cleaning water is supplied to the bowl portion without flowing out to the discharge path side. Therefore, the bowl portion is water-sealed.

(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 into an approximately inverted U shape. A discharge passage 4b on the downstream side of the neck portion 4a of the trap drainage passage 4 is formed into a substantially straight pipe shape. A constriction part 4C is provided near the outlet 6 at the lower end of the pipe wall, and a plurality of protrusions 4d are provided at predetermined intervals on the pipe wall of the discharge passage 4b, 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. It is opened diagonally with respect 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 10.

A jet nozzle 12 is attached to the bottom of the bowl part 3 in a watertight manner so that the jet nozzle 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, an operating section 17 that provides manual power for starting cleaning to the control device 6, a bowl valve mechanism 18, a jet 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 N10. Jet valve mechanism 1
The other end of 9 is connected to the jet water conduit 2 via the atmosphere release valve 20.
2, 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 16a1, a microprocessor (hereinafter referred to as MPU) 16b, and a memory 1.
6C1 timer 16d1 and output interface circuit 1
It consists of 8e.

An operating section 17 is connected to the input interface circuit 16a, and valve mechanisms 18 and 19 for bowl and jet 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.

Bowl valve T! The A structure 18 is composed of an electromagnetic on-off valve, which opens when a predetermined voltage is applied. The jet valve mechanism 19 is composed of a flow rate control valve with a water stop function, and the flow rate control valve is capable of controlling the valve opening depending on the applied voltage or the number of applied pulses. The flow rate regulating valve may be one that can control the opening degree continuously from a water stop state to a fully open state, or may be one that can control the flow rate in at least two stages. Further, the jet valve mechanism 19 may have a configuration in which two types of electromagnetic on-off valves having different flow rates when opened are arranged side by side and are selectively driven. This is a valve drive line for driving each of the valve mechanisms 18 and 19 of 18a and 19a.

The memory 16c stores in advance data regarding the order in which cleaning water is supplied, control of the amount of water supplied, and water supply time.

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, in FIG. 5, 51 to SIO 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 jet valve.

When a cleaning start input is given from the operation unit 17, the MPU 1
6b starts timer lad (St).

Simultaneously with activation of the timer 16d, the MPU 18b opens the bowl valve 18 via the output interface circuit 16e (S2).

As a result, cleaning water is supplied from the rim water injection hole 9 to the bowl part 3, cleaning the wall surface of the bowl part 3, and also cleaning water from the reservoir 2.
4. Generate a vortex.

On the other hand, the MPU 16b monitors the elapsed time of the timer 16d, and when the bowl water supply time t1 has elapsed (S3
), the bowl valve 18 is driven to the closed state to end the pre-cleaning water supply to the bowl portion 3 (S4), and the jet valve 19 is driven to the large flow water supply state (S5).

As a result, the jet nozzle 1 of the jet nozzle 12
Cleaning water is vigorously sprayed from 3 toward the inner depth of the rising pipe portion of the trap drainage channel 4. This washing water flows over the base 4a to the discharge passage 4b side, collides with the protrusion 4e of the discharge passage 4b, changes the flow, and flows down over the entire pipe of the discharge passage 4b. 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 from the outlet 6 to a drainage channel (not shown) together with the washing water. Therefore, a negative pressure is generated in the trap drainage channel 4, and the accumulated water 24 in the bowl part 3 is drawn into the trap drainage channel 4, and the trap drainage channel 4 becomes a complete siphon filled with washing water. state.

On the other hand, the MPU 16b in the control device 16 uses a timer 16d.
When the elapsed time reaches the jet section large flow water supply time t2 registered in advance in the memory 16c (S6),
The opening degree of the jet valve 19 is reduced (S7). This results in
The amount of water supplied to the jet nozzle 13 is smaller than when water is supplied to generate a siphon effect, and the force of the cleaning water jetted from the jet nozzle 13 is also weaker.

Due to the occurrence of the siphon action, the flow rate of the trap drainage channel 4 increases rapidly, and the filth and waste water in the bowl part 3 are discharged, so that the water level of the stored water 24 in the bowl part 3 decreases. During this time, cleaning water is also supplied from the jet outlet 13 to the trap drain channel 4, so dirt at the bottom of the bowl part 3 and floating dirt in the sealed water are swept into the trap drainer 4 by this jet flow. Pushed in (blow effect).

When the water level of the stored water 24 drops to the lower end 2a of the partition wall 2 and air flows into the trap drainage channel 4, the siphoning state is interrupted, and from then on, the cleaning water supplied from the jet outlet 13 is used to clean the bowl. Section 3 is sealed. Even when water is supplied for this water sealing, the opening degree of the jet valve 19 is narrowed, so that the cleaning water injected from the jet outlet 13 crosses the base 4a of the trap drainage channel 4 to the drain channel 4b side. Sealed water supply to the bowl part 3 is performed in a relatively short time without water flowing out to the bowl part 3.

The MPU 16b monitors the elapsed time of the timer 16d, and sets the water sealing water supply time t3 registered in advance in the memory 16c.
When the time has elapsed (S8), the jet valve 19 is driven to a water stop state (S9), and the timer 16d is stopped (SIO) to complete the series of cleaning water supply operations shown in FIG. 4.

In this embodiment, water is supplied to the jet holes 13 after the pre-cleaning water supply to the bowl portion 3 is completed; however, the water supply to the jet holes 13 is started during the pre-cleaning water supply. You can.

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

(Effects of the Invention) As explained above, the cleaning water supply device according to the present invention is configured to reduce the flow rate after generating a siphon effect by supplying a large flow of water, so that water can be efficiently supplied from the jet nozzle with a sealed water supply. can be set. In addition, after the siphon action occurs, the water supply continues at a reduced flow rate, so while the siphon action continues, it exerts a blowing effect that pushes dirt at the bottom of the bowl and floating dirt in the sealed water into the trap drainage channel. - Sewage can be discharged reliably.

[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 time chart showing the order of water supply, and FIG. 5 is a flow chart showing the operation of the control device. 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 unit, 18 is a bowl valve mechanism, 19 is a jet valve mechanism, 21 is a water supply pipe, 2
3 is a jet water supply port.

Claims (1)

[Scope of Claims] A device for supplying cleaning water to at least a jet nozzle of a toilet bowl, the device includes a jet valve mechanism capable of adjusting or switching the flow rate to control the water supply to the jet nozzle, and a jet valve mechanism that controls the water supply to the jet nozzle. and a control device that drives a jet valve mechanism so that after supplying a large flow of water to the trap drainage channel to generate a siphon action, water is supplied for water sealing at a flow rate lower than that when the siphon action occurs. Characteristic washing water supply device.