JPH0390750A - Flush toilet - Google Patents

Abstract

PURPOSE:To increase a washing force with a sufficient vortex in a pool, by providing a vortex in the pool of a bowl with fed water to bowl injection water holes after precleaning of the bowl with fed water into rim injection holes and by generating a syphon action in the discharge way. CONSTITUTION:A rim water passage 8 projected inward at the rim 7 of a bowl 3 is formed annularly and rim injection water holes 9 are provided at the bottom of the rim water passage 8 at every appropriate interval to be slant against the bowl 3. The rim water passage 8 is connected to a feed water chamber 10 and a feed water inlet 11 is opened on the upper face thereof. A bowl feed water chamber 12 is partitioned between the feed water chamber 10 and a trap drainage way 4 under the feed water chamber 10 and a feed water inlet 13 for a vortex is opened at the upper face thereof. And further, the front end of the feed water chamber 12 is extended downward along the bowl 3 and a plurality of bowl water injection holes 15 are formed so as to go around the inner periphery of the bowl in the lower part than the sealed water level 14. And a syphon action is caused in the occurred strong vortex of the pool 17 to suck promptly excrement into the drainage way 4.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flush toilet, and more particularly to a flush toilet that enhances the cleaning power within the bowl portion.

(Prior art) In conventional siphon jet type toilets, water is supplied from the rim at the upper edge of the bowl for washing the bowl wall, and water is also supplied from the jet nozzle provided at the bottom of the bowl to the trap drainage channel. The system injects cleaning water to create a siphon effect in the trap drainage channel. A plurality of rim water injection holes are opened diagonally to the bowl part at appropriate intervals in the rim part, and the cleaning water discharged from the rim water injection holes cleans the wall surface of the bowl part and swirls into the water stored in the bowl part. This improves the cleaning power of the bowl part.

(Problem to be solved by the invention) In this way, conventional toilets supply water to the rim and water to generate a siphon effect at the same time, so when the water supply pressure in the water supply pipe is low, the rim spout The water force from the bowl becomes weaker, and sufficient swirl is not given to the pooled water, reducing the cleaning power of the bowl. Therefore, it is possible to supply cleaning water to each part independently by staggering the timing of the water supply for the rim part and the siphon effect, but the cleaning water discharged from the rim water injection hole flows down the wall of the bowl part and becomes a pool of water. Since it provides a turning force, if the water supply pressure is low, there is a limit to the turning force that can be applied.

SUMMARY OF THE INVENTION An object of the present invention is to solve these problems and provide a toilet bowl that gives sufficient swirl to the water accumulated in the bowl even when the water supply pressure is low, thereby improving the cleaning power.

(Means for Solving the Problems) In order to solve the above problems, a flush toilet according to the present invention is provided with a rim water injection hole, a bowl water injection hole, and a trap injection hole, and a control device that operates based on a flush start input. First, water is supplied to the rim water injection hole to pre-clean the bowl part, and then water is supplied to the bowl water injection hole to swirl the water in the bowl part.
Next, water is supplied to the trap injection hole to generate a siphon effect in the trap drainage channel, and then water is supplied to the bowl portion for water sealing.

(Function) First, washing water is supplied from the rim water injection hole to wash the wall surface of the bowl portion, and then water is supplied to the bowl water injection hole to swirl the water in the bowl portion.

Next, water is supplied to the trap drainage channel, and a siphon action occurs in the trap drainage channel, discharging dirt and waste water from the bowl section.Finally, water is supplied to the bowl section for water sealing, completing a series of cleaning operations. .

(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 siphon jet type toilet bowl according to the present invention.

In the figure, a toilet bowl 1 has 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 bottom of the approximately central part of the toilet bowl 1 by bending it into an approximately inverted U shape. A drainage channel 4b on the downstream side of the base 4a of the trap drainage channel 4 is formed into a substantially straight pipe shape. A constricted portion 4c is provided near the outlet 6, which is the lower end thereof, by reducing the diameter of the tube wall inward, and a plurality of projections 4e are provided on the tube wall of the discharge path 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. It is opened diagonally 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 bowl water supply chamber 12 is defined between the lower side of the rim water supply chamber 10 and the top of the trap drainage channel 4, and a turning water supply port 13 is bored in the upper surface of the bowl water supply chamber 12. Further, the front end of the bowl water supply chamber 12 extends downward along the bowl portion 3, and a plurality of bowl water injection holes 15 are provided so as to circulate inside the bowl below the water sealing surface 14 of the bowl portion 3. I am contacting you.

The bowl water injection holes 15 are formed by forming a bowl water passage 16 that goes around the bowl part in the wall surface of the bowl part, and providing a plurality of water injection holes that penetrate the bowl water passage 16 and the bowl surface. .

The plurality of bowl water injection holes 15... are all formed in the same direction as the inclination direction of the rim water injection hole 9, and the force of the washing water sprayed from the bowl water injection holes 15... directly flows into the bowl. The accumulated water 17 in the section 3 is rotated to form the rim water injection hole 9.
The eddy current generated by the water supply from ... is encouraged to generate a strong eddy current.

Note that the bowl water passage 16 provided in the wall surface of the bowl portion may have a structure in which a vibrator made of metal, synthetic resin, or the like having a plurality of holes is buried therein.

A jet nozzle 18 is attached to the bottom of the bowl portion 3 so that a jet injection hole 19 is directed toward the inlet 5 of the trap drainage channel 4.

A box 2o is provided above the rear part of the toilet bowl 1, and a water supply control system 21 is housed within this box 20. The water supply control system 21 includes a control device 22, an operation unit 23 that gives manual power to start cleaning to the control device 22, a pressure sensor 25 that detects the water supply pressure of the water supply pipe 24, and valve mechanisms for rim, rotation, and jet. 2B, 27.28 and the atmosphere release valve 29.30 are located at the bottom of the tank.

One end of the rim valve mechanism 26 is connected to the water supply pipe 24, and the other end is connected to the rim water supply port 11 of the rim water passage chamber 10. One end of the swing valve mechanism 27 is connected to the water supply pipe 24, and the other end is connected to the swing water supply port 13 via an atmosphere release valve 29. One end of the jet valve mechanism 28 is connected to a water supply pipe, and the other end is connected to the jet water supply port 32 of the jet nozzle 18 via an atmosphere release valve 30 and a jet water supply channel 31 made of metal, synthetic resin, synthetic rubber, etc. Connecting.

Next, the configuration of the water supply control system will be explained with reference to the block diagram shown in FIG.

The control device 22 includes a human interface circuit 22a1 and a microprocessor (MPU) 22b.

It is composed of a memory 22c, a timer 22d, and an output interface circuit 22e. Input interface circuit 22a
An operating section 23 and a pressure sensor 25 are connected to the output interface circuit 22e, and valve mechanisms 26, 27, and 28 for rim, rotation, and jet are connected to the output interface circuit 22e.

The operation unit 23 includes a switch for starting flushing of the toilet bowl 1, and opening/closing of this switch is controlled by a start signal line 23.
a is input to the control device 22.

Note that the operation unit 23 may be provided with a plurality of operation buttons so that the amount of cleaning water to be supplied 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 23 only when the user is seated, or to enable a predetermined operation after changing from the seated state to the non-seated state. It may be configured to automatically start cleaning after a certain period of time.

The pressure sensor 25 uses a semiconductor or piezoelectric ceramic type pressure sensor. The output signal of the pressure sensor 25 is sent to A in the human power interface 22a via the pressure signal line 25a.
- Manually input to the D converter to convert into a digital signal corresponding to the water supply pressure.

Valve mechanisms for rim, rotation, and jet 26°27.2
Reference numeral 8 represents a solenoid valve, which opens when a predetermined voltage is applied. 26a, 27a,
28a is a signal line for driving each valve mechanism 26, 27, and 28, 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.

In addition, in the flowchart of FIG. 5, 51 to S9 indicate each step of the flowchart. Furthermore, for convenience of explanation, the rim valve mechanism 26, the swirl valve mechanism 27, and the jet valve mechanism 28 will be referred to as a rim valve, a swirl valve, and a jet valve, respectively.

In response to the activation signal from the operating section 23, the control device 22 opens the rim valve 26 (Sl).

As a result, cleaning water is supplied from the rim water injection hole 9 to the bowl section 3, cleaning the wall surface of the bowl section 3, and also cleaning water from the reservoir 1.
7. Generate a vortex.

The control device 22 performs control to supply a predetermined amount of water by varying the valve opening time based on the water supply pressure of the water supply pipe 24. For this reason, valve opening time data corresponding to various water supply pressures is registered in advance in the memory 22c.

When the preset valve opening time has elapsed, the control device 22 closes the rim valve 26 (S2) and drives the swing valve 27 to open (S3). This results in
Cleaning water is sprayed from the bowl water injection hole 15 into the bowl 3,
The vortex of the stored water 17 in the bowl part 3 is increased. When the water supply time for the bowl, which is preset according to the water supply pressure, has elapsed, the control device 22 closes the swing valve 27 (S4) and drives the jet valve 28 to an open state (S5).
).

As a result, the pre-cleaning of the bowl portion 3 is completed, and cleaning water is injected into the trap drainage channel 4 from the jet injection hole 19 of the jet nozzle 18. The cleaning water injected into the trap drainage channel 4 flows into the discharge channel 4b over the neck section 4a, collides with the protrusion 4e formed on the discharge section 4b, and flows throughout the pipe of the discharge channel 4b while changing the flow. It flows down into the road. This washing water creates a water seal in the constriction section 4C provided near the outlet 6, and also causes a water seal in the trap drainage channel 4.
The air inside is discharged together with the cleaning water from the outlet 6 to a drain pipe (not shown). Therefore, a negative pressure is generated in the trap drainage channel 4, and the accumulated water 17 in the bowl part 3 flows into the trap drainage channel 4.
The inside of the trap drainage channel 4 becomes a complete siphon filled with wash water.

The control device 22 reads the jet valve opening time data corresponding to the water supply pressure from among the plurality of data in the memory 22c, and opens the jet valve when the jet valve 28 remains open for a predetermined period of time. 28 to the closed state (S
6).

Next, the control device 22 starts the timer 22d (S7)
. The timer 22d is set with a time period from when the jet valve 28 is closed to stop the supply of cleaning water until the accumulated water 17 in the bowl portion 3 is discharged.

On the other hand, even after the jet valve 28 is closed, the siphon action within the trap drainage channel 4 continues, and the bowl portion 3
The filth, sewage, etc. inside will be discharged together with the standing water.

The control device 15 drives the rim valve 26 to the open state again after a predetermined period of time set by the timer 22d has elapsed (S
8). As a result, water sealing of the bowl portion 3 is started. Next, when the water sealing water supply time corresponding to the water supply pressure has elapsed, the control device 22 drives the rim valve 26 to the closed state (S9).

With the above steps S1 to S9, a series of cleaning water supply operations shown in the time chart of FIG. 4 are completed.

In this embodiment, water is supplied for water sealing from the rim water injection hole 9, but water may be supplied for water sealing from the bowl water injection hole 15 or the jet injection hole 19.

Alternatively, a structure may be adopted in which water is directly supplied to the rim water passage 8 and the bowl water passage 16 without providing the rim water supply chamber 10 and the bowl water supply chamber 12.

Further, the configuration of each valve mechanism 26, 27, 28 is arbitrary,
It may also be configured using a flow path switching valve or the like.

FIG. 6 is a longitudinal sectional view of a toilet bowl showing another embodiment of the present invention.

In this embodiment, cleaning water is supplied to the trap drain channel 4 to generate a siphon effect through a shower water injection hole 52 formed at the top of the trap drain channel 4, and the trap drain channel 4 is discharged from the trap drain channel 4. Water sprinkling steps 53 are provided on the pipe wall of the channel 4b.

The differences from the toilet shown in FIG. 1 are as follows. One end of the shower valve mechanism 54 is connected to the water supply pipe 24, and the other end is connected to the shower water supply port 57 of the shower water supply chamber 56 via the atmosphere release valve 55. The shower water injection holes 52 are formed to spray washing water radially from the top 4a of the trap drainage channel 4 toward the downstream side.

Therefore, when washing water is supplied from the shower water injection holes 52..., the washing water is scattered by the water sprinkling steps 53... and generates a water seal inside the drain channel 4b, and also inside the trap drain channel 4. The air is discharged together with cleaning water to a drain pipe (not shown) connected to the outlet 6. Therefore, the pressure inside the trap drainage channel 4 becomes negative with respect to the atmospheric pressure, and the accumulated water 17 in the bowl part 3 is drawn into the drain channel 4b side, and the trap drainage channel 4
The interior becomes a siphon filled with wash water, and dirt, etc. inside the bowl section 3 is discharged.

The water supply order and water supply operation are the same as those in the first embodiment in which the jet valve mechanism 28 is replaced with the shower valve mechanism 54, and the explanation thereof will be omitted.

Although the rim water supply chamber 10 and the bowl water supply chamber 12 are provided in each of the embodiments, a structure may be adopted in which water is directly supplied to the rim water passage 8 and the bowl water passage I6 without providing these water supply chambers 10 and 12. Alternatively, a shower water supply chamber may be provided only above the shower water injection holes 52, and water may be directly supplied to the shower water supply chamber.

Furthermore, the configuration of each valve mechanism 2B, 27, 28, or 54 is arbitrary, and may be configured using a flow path switching valve.

(Effects of the Invention) As explained above, the flush toilet according to the present invention supplies flush water from the bowl water injection hole to the accumulated water in the bowl after cleaning the wall surface of the bowl, so the water supply pressure is relatively high. Even when the water is low, a strong vortex can be generated in the water in the bowl, resulting in excellent washing power for the bowl.

Furthermore, since a strong eddy current is generated in the water accumulated in the bowl, a siphon effect is generated in the trap drainage channel, so the filth and wastewater in the bowl are forcefully sucked into the trap drainage channel. This has the effect of making it difficult for wastewater to remain undischarged.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view of the siphon jet toilet according to the present invention, Fig. 2 is a cross-sectional view taken along the line II-II of Fig. 1, Fig. 3 is the block constituent countries of the water supply control system, and Fig. 4 is the water supply order. FIG. 5 is a flowchart showing the operation of the water supply control system, and FIG. 6 is a longitudinal sectional view of a toilet bowl showing another embodiment of the present invention. In addition, in the drawing, 1.51 is a toilet bowl, 3 is a bowl part, 4 is a trap drainage channel, 7 is a rim part, 8 is a rim water passage, 9 is a rim water injection hole, 10 is a rim water supply chamber, and 11 is a rim water supply port , 12 is a bowl water supply chamber, 13 is a rotating water supply port, 14 is a water sealing surface, 1
5 is a bowl water injection hole, 16 is a bowl water passage, 17 is a water reservoir,
18 is a jet nozzle, 19 is a jet injection port, 22
is a control device, 23 is an operation unit, 24 is a water supply pipe, 26 is a rim valve mechanism, 27 is a swing valve mechanism, 28 is a jet valve mechanism, 31 is a jet water supply channel, 32 is a jet water supply port,
52 is a shower water injection hole, 53 is a water sprinkling step, 54 is a shower valve mechanism, 56 is a shower water supply chamber, and 57 is a shower water supply port.

Claims (1)

[Claims] a rim water injection hole provided in the rim portion of the upper edge of the bowl portion and for discharging washing water onto the wall surface of the bowl portion; a bowl water injection hole provided in the bowl portion for ejecting washing water for swirling the water accumulated in the bowl portion; A trap injection hole supplies water to the trap drainage channel to generate a siphon effect, and based on the cleaning start input, water is first supplied to the rim water injection hole to perform pre-cleaning of the bowl part, and then water is supplied to the bowl water injection hole. The water supply device is equipped with a water supply device that swirls the accumulated water in the bowl portion, then supplies water to the trap injection hole to generate a siphon effect in the trap drainage channel, and then seals the bowl portion with water. Features a flush toilet.