JPH0514282U - Flush toilet - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain flush toilets that conserve water. [Composition] A means for closing and closing the drainage port is provided, and a means for pressurizing and depressurizing the inside of the trap drainage channel is provided. At the start of cleaning, the inside of the trap drainage channel is pressurized by the pressurizing means to raise the reservoir surface of the ball portion. A control means for depressurizing the inside of the trap drainage channel by the decompression means at the time of supplying washing water to generate a siphon action is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to flush toilets, especially siphon and siphon-jet flush toilets.

[0002]

[Prior Art]

 FIG. 4 is a vertical sectional view of a conventional siphon flush toilet. This flush toilet is equipped with a water supply pipe 101 for supplying flush water to the toilet bowl 100, and supplies flush water to the toilet bowl 100 by operating a flush valve 102 to trap dirt and dirty water in the toilet bowl 100 using a siphon action or the like. It is configured to be discharged from the discharge port 104 via the drainage channel 103. Further, although not shown, instead of providing the flush valve 102, there is also a structure in which a tank is used to supply washing water to the toilet bowl 100 and drain dirt and wastewater in the toilet bowl 100 using a siphon action or the like.

[0003]

[Problems to be solved by the device]

 However, such a siphon flush toilet requires an instantaneous flow rate of about 100 liters per minute to satisfy the cleaning function of the toilet bowl, and the toilet bowl has a wide reservoir surface to prevent odors and invasion of small animals from the sewer. Therefore, since the water seal is deep, it requires 11 to 13 liters of washing water to discharge the waste and sewage, which is not desirable from the viewpoint of saving water. The present invention has been made to solve such a problem, and an object thereof is to obtain a flush toilet that saves water by efficiently producing a siphon action with a relatively small amount of washing water and discharging dirt and sewage. It is in.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the flush toilet according to the present invention is provided with a closing means for closing the drainage port and a means for pressurizing and depressurizing the trap drainage channel, and pressurizing the trap drainage channel at the start of cleaning. A control means is provided to pressurize by means of means to raise the water level of the ball portion, and when supplying washing water, depressurize the inside of the trap drainage channel by decompressing means to bring the accumulated water into the trap drainage channel to generate a siphon action. ..

[0005]

[Action]

 The trap drainage channel is pressurized by the pressurizing means to raise the water level on the water surface of the ball part, and then the trap drainage channel is decompressed by the decompression means to draw the accumulated water into the trap drainage channel. The inside of the trap is quickly filled with washing water, and the inside of the trap drainage channel is quickly set to a complete siphon state.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a vertical sectional view of a flush toilet according to the present invention.

A toilet 1 forming a flush toilet has a bowl portion 3 partitioned by a partition wall 2 and a trap drainage channel 4. The bowl portion 3 has a double structure in which the upper end peripheral portion is the rim water passage 5, and has a rim water supply chamber 7 communicating with the rim water passage 5 for guiding the cleaning water supplied from the water supply pipe 6 into the bowl portion 3. .. The trap drainage channel 4 connects an inflow port 8 opened in the lower part of the rear wall of the bowl part 3 and a discharge port 9 opened in the bottom part of the rear part of the toilet 1 by bending them in a substantially inverted U shape.

In the present embodiment, an opening 10 is provided in the vicinity of the upper part of the trap drainage channel 4, and a compressor 12, which is a pressurizing and depressurizing means, is connected to the opening 10 via a supply channel 11. The compressor 12 is driven by the control means 13 so as to increase and decrease the pressure. The drainage port 9 is provided with a closing means 14 for closing the drainage port 9. As the closing means 14, for example, as shown in Japanese Patent Laid-Open No. 1-287330, an inner peripheral portion of a cylindrical body 14a having a substantially barrel shape in side view has its upper and lower end edges arranged above and below the cylindrical body 14a. A rubber 14b closely attached to the locking portion is provided, and water is made to flow between the rubber 14b and the tubular body 14a via a three-way valve 15 to bulge the tubular body in the radial direction to drain the water. A valve that restricts the inner diameter of the valve to close it can be used. The three-way valve 15 has an inflow side 15a for injecting water between the rubber 14b and the tubular body 14a and an exhaust side 15b for draining water between the rubber 14b and the tubular body 14a according to an instruction from the control means 13. To switch.

The water supply pipe 6 guides wash water to the toilet 1, and an opening / closing valve 16 for opening and closing the water supply pipe 6 is provided at an appropriate position, and a toilet bowl is provided between the opening / closing valve 16 and the toilet 1. A water amount detecting means 17 for detecting the amount of water supplied to 1 is provided, and the signal detected here is output to the control means 13 for controlling the on-off valve 16. The on-off valve 16 can be composed of, for example, an electromagnetic valve or an electric valve. Further, the water amount detecting means 17 can be composed of, for example, a flow rate sensor using an impeller or the like.

The configuration of the control means 13 is shown in the block diagram of FIG. The control means 13 comprises an input interface 13a, a microprocessor (hereinafter referred to as MPU) 13b, a memory 13c, a timer 13d and an output interface 13e. The input interface 13a is connected to the water amount detecting means 17 and the operation unit 18. Further, the output interface 13e is connected to the compressor 12, the three-way valve 15 and the opening / closing valve 16.

The operation unit 18 includes a switch for starting the cleaning of the toilet 1, and the opening and closing of the switch is input to the MPU 13b via the input interface circuit 13a by a predetermined switch operation by the user of the toilet. The operation section 18 is provided with a switch or a sensor for detecting the seat of the toilet user, and inputs these signals to the control means 13 to make the operation of the operation section 18 effective only when the user is seated, or when the toilet user is seated. It may be configured such that it is automatically washed after a predetermined time elapses after leaving the toilet bowl.

The operation of this embodiment having the above configuration will be described with reference to the flowchart of FIG. Note that S1 to S17 indicate each step of the flowchart. When a cleaning activation input is given from the operation unit 18 (S1), the MPU 13b activates the timer 13d (S2). Simultaneously with the activation of this timer, the MPU 13b opens the inflow side of the three-way valve 15 via the output interface 13e and closes the discharge port 9 by the closing means 14 (S3).

At this time, the compressor 12 is driven (S4), and compressed air is added from the opening 10 into the trap drainage channel 4 through the supply channel 11 to push down the water level of the trap drainage channel 4 and the bowl portion 3 The accumulated water surface of is raised (S5).

Thereafter, the compressor 12 is driven to a depressurized state (S6), and the inside of the trap drain 4 is brought to a negative pressure state equal to atmospheric pressure, preferably lower than atmospheric pressure (S7), and the open / close valve 16 is opened (S8). Cleaning water necessary for generating a siphon action is supplied to the bowl portion 3 of the toilet 1 through the rim water supply chamber 7 and the rim water passage 5. At this time, the three-way valve 15 is switched to the discharge side, and the closing means 14 opens the discharge port 9 (S9). By making the negative pressure state against the atmospheric pressure, the accumulated water in the bowl portion 3 suddenly crosses over the weir portion 4a of the trap drainage channel 4 and is drawn into the trap drainage channel 4, so that the cleaning water in the trap drainage channel 4 is washed. A full siphon is generated. When the siphon condition occurs, the flow rate in the trap drainage channel 4 rapidly increases, and the waste / sewage in the bowl section 3 is discharged. The control means 13 supplies the wash water based on the detection signal detected by the water amount detection means 17, and when the preset time elapses (S10), the open / close valve 16 is closed (S11).

The siphon action continues until the water level of the accumulated water drops below the lower end 2 a of the partition wall 2 and air flows into the trap drainage channel 4, during which most of the waste / sewage in the bowl 3 is discharged together with the accumulated water. Discharge from the outlet 9.

The control means 13 supplies the wash water based on the detection signal detected by the water amount detection means 17 and opens the on-off valve 16 again at the time when the preset water supply start time for sealing has been reached (S12). (S13). Then, when the preset sealing time has elapsed (S14), the on-off valve 15 is driven to the closed state (S15), the water supply to the toilet 1 is stopped, and at the same time, the timer 13d is stopped (S16). A series of cleaning operations are completed by the above steps (S17). When the capacity of the rim water supply chamber 7 is sufficiently large, the rim water supply chamber 7 is preliminarily filled with cleaning water necessary for sealing water, and when sealing the rim, the rim outlet provided at the bottom of the rim water passage 5 is closed. By supplying the sealing water from the bowl portion 3 (not shown), it is possible not to drive the on-off valve 16 again.

[0017]

[Effect of the device]

 As described above, in the flush toilet according to the present invention, the trap drainage channel is pressurized by the pressurizing means to raise the water level of the ball portion, and then the trap drainage channel is depressurized by the depressurizing means. It is possible to instantaneously increase the amount of wash water passing through the weir part of the trap drainage channel by drawing the accumulated water into the drainage channel, so that the trap drainage channel can be quickly filled with wash water into a siphon state. As well as being able to strengthen the siphoning power, filth can be discharged quickly and water can be saved. According to an experiment conducted by the present inventor, the amount of wash water required to discharge the waste and sewage satisfactorily was about half (6 liters) of the conventional amount.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a flush toilet according to the present invention.

FIG. 2 is a block configuration diagram of control means.

FIG. 3 is a flowchart showing the operation of the control means.

FIG. 4 is a vertical sectional view of a conventional flush toilet.

[Explanation of symbols]

1 ... Toilet bowl, 2 ... Partition wall, 2a ... Lower end, 3 ... Bowl part, 4 ...
Trap drainage channel, 4a ... Weir section, 5 ... Rim water channel, 6 ... Water supply pipe, 7 ... Rim water supply chamber, 8 ... Inlet port, 9 ... Outlet port, 10
... Aperture, 11 ... Supply path, 12 ... Compressor, 13 ...
Control means, 13a ... Input interface, 13b ... Microprocessor (MPU), 13c ... Memory, 13d ...
Timer, 13e ... Output interface, 14 ... Closing means, 14a ... Cylindrical body, 14b ... Rubber, 15a ... Inflow side, 15b ... Discharge side, 16 ... Open / close valve, 17 ... Water amount detecting means, 18 ... Operation part.

Claims (1)

[Scope of utility model registration request] 1. A flush toilet in which flush water supplied into the bowl of a toilet bowl by flush water supply means is caused to generate a siphon action in a trap drainage channel and discharged from an outlet provided in the trap drainage channel. A means to pressurize and depressurize the inside of the trap drainage channel is provided as well as a closing means for closing the drainage port, and at the start of cleaning, the pressure inside the trap drainage channel is pressurized by the pressurizing means to raise the water level of the ball portion, A flush toilet comprising a control means for depressurizing the inside of the trap drainage channel by a decompression means at the time of supply to draw the accumulated water into the trap drainage channel to generate a siphon action.