JPH04222730A - Siphon jet type toilet stool - Google Patents

Abstract

PURPOSE:To prevent the effect of hydraulic pressure variation on discharging water, by arranging a tank to store washing water in the inside of toilet stool and a pump and ejecting the washing water from a nozzle provided at the bottom of the bowl to a trap discharge water passage to make it be a siphon condition. CONSTITUTION:The flow-in opening 5 of reversed U-shaped trap discharge water way 4 and the jet ejection opening 13 of jet nozzle 12 are arranged to be opposite at the bottom of the bowl 3 of a stool. Next, a rim water way 8 having a plurality of rim ejecting openings 9 is formed at the upper peripheral edge of the bowl 3. Next, a tank is installed to connect to the water way 8 at the lower part thereof to enable to discharge water from the nozzle 12 through a pump 11. And a water feeder 14 having a controller 15 is provided to drive an operation disc 16 and to discharge the washing water from the ejecting opening 9 through the water way 8 and to store water in the tank 10. And further, after a specified time has passed, the pump 11 is driven to eject the washing water from the ejecting opening 13 to the flow-in opening 5 to make it be a siphon condition for discharging sewage. In this way, even in a low hydraulic pressure, sewage can be continuously discharged.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a siphon jet toilet.

0002

BACKGROUND OF THE INVENTION Siphon jet toilets have been known that use a low tank, a flush valve, etc. to supply flushing water to a jet injection hole to discharge waste from a toilet tank.

0003

[Problem to be solved by the invention] However, in the case of using a low tank, the water is once supplied to the tank and then released to flush the toilet bowl, so the water pressure of the tap water can be low, but it is difficult to fill the tank with the required amount again. Continuous use is difficult because complete cleaning cannot be performed until water is supplied. Furthermore, since 8 liters or more of washing water is usually required for flushing a toilet bowl, the tank cannot be completely contained within the toilet bowl, spoiling its appearance and getting in the way of cleaning. On the other hand, flush valves do not have the above problems because they are connected directly to the water supply pipe, but they are susceptible to fluctuations in water supply pressure, especially in areas where water supply pressure is low. It is not possible to supply the necessary flushing water to the toilet bowl. An object of the present invention is to obtain a cleaning water supply device that solves these problems.

0004

[Means for Solving the Problems] In order to solve the above-mentioned problems, a siphon jet toilet according to the present invention includes a tank for storing washing water inside and a pump for spouting the stored washing water from a jet injection hole. Ta.

[0005]

[Operation] According to the siphon jet type toilet bowl of the present invention, flush water can be continuously supplied to the toilet bowl at an accurately set flow rate without being affected by fluctuations in water supply pressure.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be explained below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a siphon jet toilet according to an embodiment of the present invention. The siphon jet toilet 1 has a bulkhead 2
It has a bowl part 3 and a trap drainage channel 4 divided by. The trap drainage channel 4 includes 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 toilet bowl 1 at the approximate center.
The drain passage 4b on the downstream side of the weir part 4a of the trap drainage passage 4 is formed into a substantially straight pipe shape.

A rim passageway 8 is formed in the rim 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 injection holes 9 are formed at appropriate intervals on the bottom surface of the rim passageway 8. Each section is opened diagonally with respect to the bowl portion 3. The rim water passage 8 also communicates with a tank 10 provided at the bottom of the bowl portion 3, and a pump 11 is provided at the bottom of the tank 10.

A jet nozzle 12 for compressing and spraying cleaning water stored in a tank 10 with a pump 11 is installed at the bottom of the bowl portion 3 so that its jet injection hole 13 is directed toward the inlet 5 of the trap drainage channel 4. It is attached in a watertight manner.

A water supply device 14 is provided above the rear portion of the toilet bowl 1. 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 bowl valve mechanism 17, and an atmosphere release valve 18. Water supply pipe 1
9 is connected to a rim water supply chamber 20 that communicates with the rim water passage 8 via a constant flow valve 21, a bowl valve mechanism 17, and an atmosphere release valve 18.

As shown in the block diagram of FIG. 2, the control device 15 includes an input interface 15a, a microprocessor (hereinafter referred to as MPU) 15b, a memory 15c,
It consists of a timer 15d and an output interface 15e. The input interface 15a is connected to the operating section 16, and the output interface 15e is connected to the bowl valve mechanism 17 and the pump 11.

The operating section 16 includes a switch for starting flushing of the toilet bowl 1, and opening/closing of this switch is inputted to the control device 15 via a start signal line 16a. The bowl valve mechanism 17 is composed of a solenoid valve that opens when a predetermined voltage is applied. The memory 15c stores in advance data regarding the order in which cleaning water is supplied, the amount of water supplied, and the time of water supply.

Next, the operation of the first embodiment with the above configuration will be explained using the flowchart shown in FIG. Operation unit 16
When a cleaning start input is given from , the MPU 15b starts the timer 15d (S1). Upon activation of the timer 15d, the MPU 15b opens the bowl valve mechanism 17 via the output interface 15e (S2
). Due to this drive, cleaning water is supplied from the rim injection hole 9 formed on the bottom surface of the rim passageway 8 to the bowl part 3 to clean the bowl part 3, and the water is supplied to the lower part of the bowl part 3 via the rim passageway 8. Cleaning water is supplied to the provided tank 10.

[0013] The MPU 15b monitors the elapsed time of the timer 15d, and when the water supply time to the bowl part 3 has elapsed (S3), it drives the bowl part valve mechanism 17 to the closed state (S4). At the same time, the pump 11 is driven (S5) to inject cleaning water from the jet injection hole 13 of the jet nozzle 12 toward the dam 4a of the trap drainage channel 4, thereby driving the pump 11 into a jet water supply state. This washing water generates negative pressure inside the trap drainage channel 4, and as a result, the accumulated water in the bowl part 3 is drawn into the trap drainage channel 4, creating a siphon state inside the trap drainage channel 4, and discharging filth and sewage. is started.

When the elapsed time of the timer 15d reaches the jet water supply time stored in advance in the memory 15c (S6), the MPU 15b stops driving the pump 11 (S7) and restarts the bowl valve mechanism. 17 is driven to an open state (S8). On the other hand, the siphon state continues until the water level of the stored water becomes below the lower end of the partition wall 2 and air flows into the trap drainage channel 4. After this, the bowl part 3 is sealed with water by the washing water injected from the rim injection hole 9, and the washing water is again supplied to the tank 10.

The MPU 15b drives the bowl valve mechanism 17 to the closed state (S10) when the elapsed time of the timer 15d reaches the sealed water supply time stored in advance in the memory 15c (S9). Stop the timer 16d (S
11) Complete a series of toilet flushing operations. In this embodiment, the bowl valve mechanism 17 is closed while the pump 11 is driving, but the bowl valve mechanism 17 is kept open even while the pump 11 is driving. Good too.

FIG. 4 is a flowchart showing the operation of the second embodiment using a different control method but having the same configuration as the first embodiment. That is, when a cleaning start input is given from the operation unit 16, the MPU 15b starts the timer 15d (
ST1). With the activation of this timer 15d, the MPU 15b
drives the bowl valve mechanism 17 to an open state and also drives the pump 11 via the output interface 15e. Due to this drive, cleaning water is supplied to the bowl part 3 from the rim injection hole 9 opened at the bottom of the rim passageway 8, and the bowl part 3
At the same time, jet water is supplied from the jet nozzle 13 of the jet nozzle 12 toward the dam 4a of the trap drainage channel 4. (ST2). Therefore, negative pressure is generated in the trap drainage channel 4 due to the washing water, and accumulated water in the bowl section 3 is drawn into the trap drainage channel 4, creating a siphon state inside the trap drainage channel 4, causing filth and sewage to flow inside the trap drainage channel 4. discharge begins. At this time, cleaning water is supplied to the tank 10 provided at the lower part of the bowl portion 3 via the drive rim passageway 8, as in the first embodiment.

The MPU 15b monitors the elapsed time of the timer 15d, and when the jet water supply time stored in advance in the memory 15c has elapsed (ST3), the pump 1
1 is stopped (ST7).

The MPU 15b drives the bowl valve mechanism 17 to the closed state (ST6) when the elapsed time of the timer 15d reaches the sealed water supply time stored in advance in the memory 15c (ST5). Stop the timer 16d (
ST7) Complete a series of toilet bowl cleaning operations. Incidentally, the water supply to the tank 11 may be directly connected to the water supply pipe 19 instead of through the rim water passage 8, and the amount of accumulated water may be controlled by a ball tap. A cleaning operation can be performed in which the pump and the pump are terminated at the same time. In addition, if the operation unit 16 is provided with a switch to distinguish between urination and urination, and the switch is used to control the amount of water supplied, water can be saved.

[0019]

[Effects of the Invention] The siphon jet toilet of the present invention includes a tank that stores jet cleaning water inside and a pump that jets out this cleaning water from a nozzle, and the pump jets the cleaning water stored in the tank. As a result, the flushing water necessary for continuously discharging filth, etc. can be supplied to the toilet bowl without experiencing fluctuations in water supply pressure, even in areas with low water supply pressure, and the flushing water for jets is Since only about 2 liters is required for each flush, it can be stored inside the toilet bowl without damaging its appearance or getting in the way of cleaning.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a siphon jet toilet according to an embodiment of the present invention.

FIG. 2 is a block diagram of a control device for a siphon jet toilet according to an embodiment of the present invention.

FIG. 3 is a flowchart showing the flow of operation of the siphon jet toilet according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing the operation flow of the siphon jet toilet according to the second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... Toilet bowl, 2... Bulkhead, 3... Bowl part, 4... Trap drainage channel, 4a... Weir part, 4b... Discharge channel, 5... Inflow port, 6... Outflow port, 7... Rim, 8... Rim passageway, 9 ...Rim injection hole, 10
...Tank, 11...Pump, 12...Jet nozzle, 1
3...Jet injection hole, 14...Water supply device, 15...Control device, 15a...Input interface, 15b...Microprocessor (MPU) 15c...Memory, 15d...Timer, 1
5e... Output interface, 16... Operation unit, 17... Valve mechanism for bowl part, 18... Atmospheric release valve, 19... Water supply pipe, 20
...Rim water supply chamber, 21...Constant flow valve.

Claims (1)

[Claims] Claim 1: A toilet bowl equipped with a jet injection hole at the bottom of the bowl part that sprays flushing water toward a trap drainage channel, the toilet bowl comprising a tank for storing flushing water therein, and a tank for storing flushing water therein, and a tank for storing flushing water therein, A siphon jet toilet characterized by being equipped with a pump that spouts water from a jet nozzle.