JP2763607B2 - Cleaning water supply device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for independently supplying washing water to a bowl portion of a toilet bowl and a trap drainage channel.

(Conventional technology) Wash water is supplied to the trap drainage channel to generate a siphon action in the trap drainage channel, and after discharging dirt and wastewater from the bowl portion, water is supplied to the bowl portion to wash and seal the bowl portion. The washing and water supply system that performs
No. 092 is known.

(Problems to be Solved by the Invention) The conventional flush water supply device can clean the toilet with a small amount of flush water, but since the waste water and the contaminated water are discharged, the bowl is sealed and supplied with water. If dirt or the like adheres to the wall surface of the part, the dirt or the like remains in the sealed water, which is not preferable.

An object of the present invention is to solve such problems and to provide a flush water supply device that can clean a toilet with a relatively small amount of water supply and that does not easily leave dirt and the like in sealed water.

(Means for Solving the Problems) In order to solve the above problems, the washing water supply apparatus according to the present invention supplies water to a bowl part after supplying water to a trap drainage channel,
A control device for driving the bowl valve mechanism and the trap valve mechanism so as to supply water only to the bowl portion after a predetermined simultaneous water supply time has elapsed is provided.

(Operation) A siphon action is generated in the trap drainage channel by supplying water to the trap drainage channel, and discharge of waste and sewage in the bowl portion is started. Next, the water is simultaneously supplied to the bowl portion and the trap drainage channel, and the washing water flowing down while washing the wall surface of the bowl portion merges with the cleaning water supplied to the trap drainage channel and is discharged. By this flow, dirt and the like adhering to the bowl wall surface are transported in a short time, so that no dirt and the like remain in the sealed water.

(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 the figure, reference numeral 1 denotes a siphon jet toilet, and the toilet 1 has a bowl portion 3 and a trap drainage channel 4 partitioned by a partition wall 2. The trap drainage channel 4 connects an inflow port 5 opened in the lower part of the rear wall of the bowl portion 3 and an outflow port 6 opened in a substantially central bottom surface of the toilet bowl 1 in a substantially inverted U-shape.
A discharge channel 4b downstream of the weir portion 4a of the trap drain channel 4 is formed in a substantially straight pipe shape. A narrowed portion 4c with a reduced diameter of the tube wall is provided near the outlet 6 at the lower end thereof, and a plurality of projections 4b are formed at predetermined intervals on the tube wall of the discharge passage 4b as shown in FIG. It is arranged spirally.

A rim water passage 8 is provided on the rim 7 at the upper peripheral edge of the bowl portion 3.
Are formed in an annular shape so as to protrude inward of the bowl portion 3, and rim water holes 9 are formed obliquely with respect to the bowl portion 3 at appropriate intervals on the bottom surface of the rim water passage. The rim water passage 8 communicates with a rim water supply chamber 10 at the rear, and a rim water supply port 11 is formed in an upper surface of the rim water supply chamber 10.

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

A box 14 is provided above the rear of the toilet 1
A cleaning water supply device 15 is housed in 14. Cleaning water supply device 15,
A control unit 16, an operation unit 17 for giving a cleaning start input to the control unit 16, a bowl valve mechanism 18, a trap valve mechanism 19,
And an atmosphere release valve 20.

The water supply pipe 21 is connected to one end of each of the branched valve mechanisms 18 and 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 a jet water pipe 22 via an atmosphere release valve 20, and the other end of the jet water pipe 24 is connected to a jet water supply port 23 of the jet nozzle 12. . The jet water pipe 22 is made of metal, synthetic resin or synthetic rubber.
It is arranged along the rear lower surface of the bowl portion 3 so that its length is shortened.

 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, a memory 16c, a timer 16d, and an output interface circuit 16e. An operation unit 17 is connected to the input interface circuit 16a, and valve mechanisms 18 and 19 for bowl and trap are connected to the output interface circuit 16e.

The operation unit 17 includes a switch for starting the cleaning of the toilet 1, and opening and closing of the switch is performed by a start signal line 17a.
Is input to the control device 16.

The operation unit 17 may be provided with a plurality of operation buttons so that the supply amount of the cleaning water can be selected. In addition, a switch or a sensor for detecting a seat is provided, and these signals are input to the control device to enable the operation of the operation unit 17 only in the seated state, or a predetermined state after the seated state is changed to the unseated state. A configuration in which cleaning is automatically started after a lapse of time may be employed.

The bowl and trap valve mechanisms 18 and 19 are constituted by electromagnetic on-off valves, which are opened when a predetermined voltage is applied. 18a and 19a are each valve mechanism 1
This is a valve drive line for driving 8,19.

The memory 16c stores in advance data relating to the water supply order and water supply time.

Next, the operation of this embodiment will be described with reference to the time chart of FIG. 4 and the flowchart of FIG. In FIG. 5, S1 to S9 indicate each step of the flowchart. For convenience of explanation, the respective valve mechanisms 18 and 19 are referred to as a bowl valve and a trap valve.

When a cleaning start input is given from the operation unit 17, the MPU 16b starts the timer 16d (S1). Simultaneously with the activation of the timer 16d, the MPU 16b drives the trap valve 19 to open via the output interface circuit 16e (S2). Next, the MPU 16b reads the bowl part water supply start time t1 stored in the memory 16c, compares this time data with the data of the timer 16d (S3), and when the time t1 is reached, the bowl valve 18 is opened. Drive. Then, when the trap section water supply time t2 stored in advance in the memory 16c has elapsed (S5), the trap valve 19 is driven to the closed state (S6), and then the bowl section water supply time t3 has elapsed. (S7), drives the bowl valve 18 to the closed state (S8), and stops the timer 16d (S7).
9).

When the trap valve 19 is opened in step S2, the washing water is vigorously jetted from the jet injection hole 13 of the jet nozzle 12 into the rising pipe connected to the flowing water port 5 of the trap drainage channel 4. The injected washing water passes through the weir 4a and is discharged
4b, collides with a plurality of projections 4d formed on the discharge path 4b, and flows down substantially uniformly over the entire pipe of the discharge path 4b while changing the direction of the flow. With this washing water, a water seal is generated in the throttle portion 4c provided near the outlet 6, and
The air in the trap drain passage 4 is discharged from the outlet 6 to a drain pipe (not shown) together with the washing water.

For this reason, a negative pressure is generated in the trap drainage channel 4, and the stored water 24 in the bowl portion 3 is drawn into the trap drainage channel 4, and the inside of the trap drainage channel 4 is completely filled with the washing water. State. This siphon state is continued until the water level of the stored water 24 drops and air flows into the trap drainage channel 4 from the lower end 2a of the partition wall 2, and during this time, dirt and wastewater in the bowl portion 3 are discharged. During steps S4 to S6, the water supply to the trap drainage channel 4 and the water supply to the bowl portion 3 are simultaneously performed, and the wall surface is washed with the cleaning water sprayed from the rim water holes 9 to the inner wall surface of the bowl portion 3. While holding the water 24
Water level drops. Therefore, the washing water from the rim spray hole 9 causes the dirt adhering to the wall surface of the bowl portion 3 and the floating dirt in the pool water 24 to flow down, and the washing water injected from the jet nozzle 12 traps these dirt. Drainage channel 4
Since it is pushed into the inside (blowing effect), there is no waste remaining on the inner wall surface of the bowl portion 3, and washing with a high effect of transporting floating waste is performed.

In addition, even after the siphon action is cut off, the bowl valve 18 is kept open for a predetermined time to supply water for sealing, and
The cleaning operation shown in FIG.

In the present embodiment, the water is supplied to the trap drainage channel 4 by the single-hole jet nozzle 12. However, a configuration in which the washing water is jetted into the trap drainage channel 4 like a shower from a plurality of injection holes. Good.

Further, the flush water supply device 15 may be provided on a toilet wall or the like without being built in the toilet 1.

(Effect of the Invention) As described above, the cleaning water supply apparatus according to the present invention first supplies cleaning water to the trap drainage channel to generate a siphon action, and then simultaneously supplies water to the trap drainage channel and the bowl portion. Therefore, the sewage having washed the wall of the bowl portion and the floating sewage in the stagnant water can be efficiently pushed into the trap drainage channel and discharged, and effective washing can be performed with a small amount of washing water.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a toilet provided with a 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 flush water supply device, FIG. Is a time chart showing a water supply order, and FIG. 5 is a flowchart showing an operation of the control device. In the drawings, 1 is a toilet bowl, 3 is a bowl portion, 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 flush water supply device,
Reference numeral 16 denotes a control device, 17 denotes an operation unit, 18 denotes a bowl valve mechanism, 19 denotes a trap valve mechanism, 21 denotes a water supply pipe, and 23 denotes a jet water supply port.

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shinji Shibata 2-8-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Tochiki Kikai Co., Ltd. Chigasaki Plant (72) Inventor Noboru Niihara 2--8, Honmura, Chigasaki-shi, Kanagawa Prefecture No. 1 Toga Kikai Co., Ltd. Chigasaki Plant (56) References JP-A-3-90742 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) E03D 11/02 E03D 5/10 E03D 3/00

Claims (1)

(57) [Claims] An apparatus for independently supplying flush water to a bowl portion of a toilet bowl and a trap drainage channel, the device controlling a water supply to a bowl portion and a valve mechanism for controlling water supply to the bowl portion. After the trap valve mechanism and the trap valve mechanism are driven to the open state based on the cleaning start input, the bowl valve mechanism is driven to the open state and the trap valve mechanism is closed after the predetermined simultaneous water supply time has elapsed. And a control device for driving the bowl valve mechanism to a closed state.