JPH02161027A - Siphon jet water closet - Google Patents

Abstract

PURPOSE:To make siphonage even under lower water supply pressure by leading a jet water conduit to a jet nozzle provided to the bowl section of a closet from a water supply device, and supplying directly washing water to jet. CONSTITUTION:A jet water conduit 24 is led and connected to a jet nozzle 12 provided to the bowl section 3 of a water closet 1 from a water supply device 14. Washing water is directly supplied from the water supply device 14 to the jet nozzle 12 without reducing water supply pressure and is jetted. According to the constitution, effective siphonage can be made with a simple construction even under lower water supply pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a siphon-jet toilet bowl that supplies flush water to a trap drain to generate a siphon action.

(Prior art) A conventional siphon jet toilet is, for example,
As known from Publication No. 3882, water is supplied from the water supply chamber provided at the rear upper part of the toilet bowl through the rim water passage in the rim portion.
Cleaning water is supplied to the jet nozzle through a jet passageway extending below the bowl.

(Problem to be solved by the invention) For this reason, the length of the water supply channel from the water supply chamber to the jet nozzle is long, and the flow resistance of the cleaning water is large, so cleaning water is vigorously jetted from the jet nozzle to drain the trap. High water supply pressure was required to create a siphon effect in the channel.

Furthermore, since the toilet bowl is made of ceramic, the complex-shaped water passage portion has a structure in which multiple parts are pasted together, which complicates the manufacturing process and increases production costs.

The present invention has been made to solve these problems, and its purpose is to provide a toilet that is easy to manufacture and that can generate a siphon effect even at low water supply pressure.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a method in which a jet nozzle is attached to the bowl of a toilet bowl, and this jet nozzle and a water supply device are connected by a jet water supply pipe. Features.

(Function) Since the cleaning water is directly supplied from the water supply device to the jet nozzle through the jet water supply pipe, the water supply pressure does not decrease.

Additionally, the structure of the toilet bowl is simplified.

(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 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 rear bottom surface of the toilet bowl 1 by bending it into a substantially inverted U shape. The discharge passage 4b on the lower side of the neck portion 4a of the passage 4 is formed into a substantially straight pipe shape, and a cylindrical water seal generating mechanism 7 is provided on the outlet 6 side of the discharge passage 4b.

This water seal generating mechanism is made of synthetic resin or the like and is separate from the toilet bowl 1. The water seal generating mechanism 7 has an inner diameter expanded at approximately the center of the cylindrical body, and a dirt guide cylinder 7b is provided concentrically in each diameter cylinder part 7a below this, and the lower end of the water seal generating mechanism 7 is roughly expanded. A constricted portion 7c is provided. The water seal generating mechanism 7 has a connecting cylinder portion 7d at the upper end fitted and connected to the trap drainage channel 4 of the toilet bowl 1, and the fitting connecting portion is fixed in a watertight and airtight state with an adhesive or the like.

Between the upper end of the dirt guide tube 7b and the enlarged diameter tube part 7a, between the lower end of the dirt guide tube 7b and the constriction part 7c, and between the outer wall surface of the dirt guide tube 7b and the inner wall surface of the enlarged diameter tube part 7a. teeth,
Gaps 7e and 7f, respectively.

7g, and the dirt guide cylinder 7b is fixed within the enlarged diameter cylinder part 7a by three connecting parts 7h, as shown in the horizontal cross-sectional view of FIG.

A rim water 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 rim water injection ports 10 are formed at appropriate intervals on the bottom surface of the rim water passageway 9. It is opened diagonally to the bowl part 3. Further, the rim water passage 9 communicates with a rim water supply chamber 11 at the rear.

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. oriented towards. 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 water supply device 14 is housed in this box 13. The water supply device 14 includes a control device 15, an operation section 16 that provides a cleaning start input to the control device 15, a rim valve mechanism 17 that controls water supply to the bowl section 3, an atmospheric release valve 18, and a rim flow meter 19. Also, a jet valve mechanism 20 that controls water supply to the jet nozzle 12, an atmospheric release valve 21, and a jet flow meter 22.
It consists of.

One end of the rim valve mechanism 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 and the rim flow meter 19.

One end of the jet valve mechanism 20 is connected to a water supply pipe 23, and the other end is connected to one end of a jet water conduit 24 via an atmosphere release valve 21 and a jet flow meter 22. This jet water conduit 24 is made of metal, synthetic resin, or synthetic rubber, and is used to directly connect the water supply control system 14 and the jet nozzle 12. 3, and the other end of the jet water guide pipe 24 is connected to the jet water supply port 12b of the jet nozzle 12.

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

The control device 15 includes a human power interface circuit 1581 and a microprocessor (MPU) 15b.

It is composed of a memory 15c, a timer 15d1, an output interface circuit 15e, and an input interface 15a.
Operation unit 16 and rim and jet flow meters 19
．． 22 is connected to the output interface circuit 15e, and a rim valve mechanism 17 and a jet valve mechanism 20 are connected to the output interface circuit 15e.

The operation unit 16 includes a switch for starting flushing of the toilet bowl 1, and opening/closing of this switch is controlled by a start signal line 1.
6a is input to the control device 15.

Note that the operation unit 16 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 15 to enable operation of the operating section 16 only when the user is seated, or after changing from the seated state to the non-seated state. , the cleaning may be started automatically after a predetermined period of time.

The flowmeters 19 and 22 for the rim and jet use impeller type flowmeters. This flowmeter 19.22 has a magnet attached to the impeller, and electromagnetically detects the rotation of the impeller.
An alternating electromotive force with a frequency proportional to the rotation of the impeller is output as a flow signal.

Note that the flowmeters 19 and 22 may be an electromagnetic flowmeter or the like other than the impeller type.

The flow signal inputted to the input interface circuit 15a through the flow signal lines 19a and 22a is waveform-converted within the input interface circuit 15a, and converted into a pulse signal with a predetermined amplitude and a predetermined pulse width proportional to the frequency of the flow signal. and is input to the microprocessor tsb.

The valve mechanisms 17 and 20 for the rim and the jet are composed of, for example, electromagnetic valves, which open when a predetermined voltage is applied.

17a and 20a are signal lines for driving each valve mechanism 17 and 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. In addition, in the flowchart of FIG. 5, 31 to S7 indicate each step of the flowchart. For convenience of explanation, the rim valve mechanism 17 and the jet valve mechanism 20 will be referred to as a rim valve and a jet valve, respectively.

The control device 15 drives the rim valve 17 to an open state in response to the activation signal from the operating section 16 (Sl).

Thereby, flush water is supplied to the bowl portion 3 of the toilet bowl 1. The supplied washing water generates a vortex in the bowl part 3, and pre-washes the bowl part 3.

Next, the control device 15 drives the jet valve 20 to an open state. Thereby, the cleaning water is injected 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.

On the other hand, the microprocessor 15b processes the rim flow meter 19.
The integrated flow rate value or instantaneous flow rate is determined by counting the pulse signal obtained by shaping the flow rate signal, and when it matches the set value of the bowl pre-washing water amount set in advance in the memory 15c, the output interface circuit 15e is activated. The rim valve 17 is then closed (S3).

Even if the rim valve 17 is closed, the shed nozzle 12
The washing water injection continues, and a part of the washing water flowing through the drainage channel 4b flows into the expanded diameter cylinder part 7a of the wood seal generating mechanism 7.
It enters the gap 7g between the dirt guide cylinder 7b and the constriction part 7.
Flowing water is sprayed from the gap 7f between the lower end of the dirt guide tube 7b and the bottom end of the tube into the center of the tube, and a water seal (water belly) is placed at the outflow port 6.
to occur. Due to the occurrence of this water seal, the inside of the trap drainage channel 4 is isolated from the atmosphere, and as the upstream side of this water seal is filled with cleaning water, the air inside the trap drainage channel 4 is discharged from the combing outlet 6 along with the cleaning water as shown in the figure. It is discharged to the drain pipe side.

Therefore, negative pressure is generated in the trap drain 4, and the standing water 24 in the bowl part 3 is drawn into the trap drain 4, creating a complete siphon state in which the trap drain 4 is filled with washing water. Become.

The water supply amount data of the cleaning water injected from the jet nozzle 12 is set in advance in the memory 15c similarly to the bowl section described above, and the microprocessor 15b
The amount of water supplied is determined as an integrated or instantaneous amount of combing based on the combing amount signal of the jet flow meter 22, and when it matches the set value of the jet water supply amount, the output interface circuit 1
5e to close the jet valve 20 (S4)
.

Even if the cleaning water jet from the jet nozzle 12 stops,
The siphon action continues until the water level of the standing water 24 drops below the lower end 2a of the partition wall 2. During this time, the waste in the bowl portion 3 is discharged together with the standing water 24. Note that the dirt passes through the dirt guide 8b of the water seal generating mechanism 7 and is discharged from the outlet 6.

After driving the jet valve 20 to the open state in step S4, the control device 15 immediately starts the timer 15d, and when a preset predetermined time period has elapsed (SS), it drives the rim valve 17 to the open state again. SS) When a preset amount of sealed water is supplied to the bowl portion 3, the rim valve is closed (37).

This completes the series of water supply controls shown in FIG. 4. In this embodiment, the injection of cleaning water from the jet nozzle 12 is started during the pre-cleaning of the bowl part, but after the pre-cleaning is completed, Cleaning water may also be sprayed.

Alternatively, instead of providing a flow meter 1.9.20, a pressure sensor is provided in the water supply pipe 23, and the opening time of each valve mechanism 17.20 is varied in response to the water supply pressure of the water supply pipe 23 to obtain a predetermined amount of water. It may be configured to supply the following.

(Effects of the Invention) As explained above, since the jet nozzle attached to the lower part of the bowl of the toilet bowl and the water supply device are directly connected by the jet water pipe, the structure of the toilet is simplified, and There is little drop in water supply pressure between the water supply device and the jet nozzle, and the siphon effect can be generated even in places where the water supply pressure of the water supply pipe is low.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of the toilet bowl according to the present invention, Fig. 2 is a sectional view taken along the line TI-II in Fig. 1, Fig. 3 is a block diagram of the water supply device, and Fig. 4 shows the operation of the water supply device. The time chart and FIG. 5 are the same flowchart. In the drawings, 1 is a toilet bowl, 3 is a bowl part, 4 is a trap drain, 5 is an inlet of the trap drain, 12 is a jet nozzle, 14 is a water supply device, 15 is a control device, and 20 is a jet valve. The mechanism 24 is a jet water conduit.

Claims (1)

[Claims] In a siphon jet toilet that generates a siphon effect by supplying flush water from a water supply device to a trap drain,
A jet nozzle for spraying the wash water toward the trap drainage channel is attached to the bowl portion of the toilet bowl, and a jet water conduit pipe connects the water supply device and the jet nozzle to the water supply device. A siphon jet toilet bowl characterized in that the washing water is guided more directly to a jet nozzle.