JP2763608B2 - Cleaning water supply device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for supplying flush water to a toilet.

(Prior Art) FIG. 7 is a vertical sectional view at the bottom of a siphon jet toilet. Wash water is trapped from a jet nozzle 101 provided at the bottom of the bowl section 100 of the toilet bowl, and the rising pipe section 10 of a drainage channel 102 is provided.
A technique is known in which the toilet water is sprayed toward 3, and the washing water is used to generate a siphon action in the trap drainage channel 102 to wash the toilet.

(Problems to be Solved by the Invention) However, when waste is present in the form of closing the inflow port 104 of the rising pipe section 103 or immediately before the injection hole 105 of the jet nozzle 101, the waste is injected from the injection hole 105. As a result, the siphon action cannot be efficiently generated. For this reason, the flushing of the toilet becomes insufficient. Or,
A large amount of washing water is consumed because washing water is supplied a plurality of times.

An object of the present invention is to solve such a problem and to provide a flush water supply device capable of efficiently flushing a toilet with a relatively small amount of flush water.

(Means for Solving the Problems) In order to solve the above problems, the cleaning water supply apparatus according to the present invention performs pre-jet water supply to the jet nozzle before water supply for generating the jet nozzle siphon action. A water supply control device is provided.

(Operation) Based on the cleaning start input, the control device first supplies pre-jet water to the jet nozzle, and crushes or moves waste at the bottom of the bowl portion. Then, a siphon action is generated in the trap drainage channel by supplying water to the next jet nozzle, thereby discharging dirt and wastewater in the bowl portion.

(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 injection holes 9 are formed obliquely with respect to the bowl portion 3 at appropriate intervals on the bottom surface of the rim water passage 8. In addition, rim waterway 8
A rim water supply chamber 10 communicates with the rim water supply chamber 10 at the rear, and a rim water supply port 11 is formed in the 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 through an atmosphere release valve 20,
The other end of the jet water pipe 22 is connected to the jet water supply port 23 of the jet nozzle 12. This jet water pipe 22
Uses a tube made of metal, synthetic resin or synthetic rubber, and is arranged along the rear lower surface of the bowl portion 3 so as to shorten the length.

 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,
The output interface circuit 16e is connected with valve mechanisms 18 and 19 for the bowl and the trap.

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 S11 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.

Upon receiving a start signal from the operation unit 17, the control unit 16
The MPU 16b starts the timer 16d (S1), and at the same time, drives the trap valve 19 to the open state via the output interface circuit 16e (S2). As a result, the washing water is injected from the jet injection holes 13, and if there is any dirt or the like at the bottom of the bowl portion 3, the dirt is crushed or dispersed.

The MPU 16b monitors the elapsed time of the timer 16d, and when the pre-jet water supply start time t1 has elapsed (S3),
The trap valve 19 is driven to a closed state (S4), and the bowl valve 18 is driven to an open state (S5). As a result, the pre-jet water supply from the jet injection holes 13 is stopped, and the cleaning water is supplied from the rim water injection holes 9 to the bowl portion 3 to wash the wall surface of the bowl portion 3 and generate vortices in the stored water 24.

The MPU 16b monitors the elapsed time of the timer 16d, and when the pre-wash water supply time t2 from the rim spray hole 9 has elapsed (S
6), while driving the bowl valve 18 to the closed state (S
7) The trap valve 19 is driven to the open state (S8). As a result, the pre-wash water supply is stopped, and the wash water is jetted from the jet holes 13 of the jet nozzle 12 toward the rising pipe portion of the trap drainage channel 4. This washing water rushes over the weir portion 4a, flows into the discharge path 4b side, collides with the protrusion 4d of the discharge path 4b, and flows down almost uniformly throughout the entire pipe of the discharge path 4b while changing the flow. The throttle 4c provided near the outlet 6 by this washing water
A water seal is generated in the portion, 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,
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 becomes a complete siphon state filled with wash water. In this siphon state, the flow rate of the trap drainage channel 4 rapidly increases, becomes greater than or equal to the supply amount of cleaning water, and discharge of dirt / sewage is started.

In the present embodiment, the water supply to the jet injection holes 13 is continued even after the siphon action has occurred, so that dirt and wastewater are pushed into the trap drainage channel 4 (blowing effect). On the other hand, the siphon state is stopped 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. Thereafter, water is sealed in the bowl portion 3 by the cleaning water injected from the jet injection holes 13. On the other hand, when the trap unit water supply time t3 previously stored in the memory 16c has elapsed (S9), the MPU 16b
19 is driven to the closed state, and the timer 16d is stopped (S11).
Thus, a series of cleaning operations shown in FIG. 4 is completed.

As shown in FIG. 6, the order of the washing water supply is such that the trap valve 19 is closed after the siphon action is generated, and after the siphon action is completed, the bowl valve 18 is opened to set the rim spray hole. From 9, water supply for sealing may be performed.

In addition, during the pre-jet water supply period, the opening and closing of the trap valve 19 may be repeated to inject the cleaning water intermittently.Furthermore, the trap valve 19 is not a mere open / close valve but a flow control valve. The control device 16 may be configured so that the degree of opening of the flow control valve is periodically changed so as to give strength to the jet flow.

Further, the flush water supply device 15 may be attached to a wall surface of a toilet or the like without being built in the toilet 1.

(Effects of the Invention) As described above, the cleaning water supply apparatus according to the present invention first supplies pre-jet water to the jet nozzle based on the cleaning start input, and crushes or moves dirt at the bottom of the bowl portion. Since water is supplied for the generation of the action, the jet jet for the generation of the siphon action is not significantly obstructed by dirt, etc., and the siphon action can be reliably generated. Washing can be performed.

[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 the water supply sequence, FIG. 5 is a flowchart showing the operation of the control device, FIG. 6 is a time chart showing another water supply sequence,
FIG. 7 is a vertical sectional view of an essential part for explaining the operation of the conventional siphon jet toilet. 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 Continued on the front page (72) Inventor Shinji Shibata 2-8-1, Honmura, Chigasaki-shi, Kanagawa Prefecture Tochiki Kiki Co., Ltd. No. 1 Tochiki Kikai Co., Ltd. Chigasaki Plant (56) References JP-A-2-35132 (JP, A) JP-B-55-30092 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , (DB name) E03D 11/02 E03D 5/10

Claims (1)

(57) [Claims] An apparatus for supplying flush water to at least a jet nozzle of a toilet, wherein the apparatus first supplies water to a jet nozzle based on a flush start input, and then supplies water for generating a siphon action again. A washing water supply device comprising a control device for driving a valve mechanism.