JPH01287330A - Water closet - Google Patents

Abstract

PURPOSE:To reduce the water quantity consumed for washing water by providing a detection means of the washing water quantity from a controlling valve of a drain pipe and a washing water supply means, supplying the washing water in case the washing starts and draining based on a signal of the detection of the water quantity when the water in a bowl section reaches a specific quantity. CONSTITUTION:The washing water supplied to a bowl section 1a of a stool 1 by a washing water supply means 9 and the like causes siphonage in a trap section 1c to drain from a drain pipe 2. A controlling valve 4 controlling a degree of opening and closing is provided to the drain pipe 2, and a water quantity detection means 10 detecting the washing water supplied into the bowl section 1a by the washing water supply means 9 is provided as well. The controlling valve 4 is driven to the closing side to supply the washing water in case the washing starts, the controlling valve 4 is driven to the opening side by a controlling means 8 to drain based on an output signal of the water quantity detection 10 when the water in the bowl section 1a reaches a specific quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a flush toilet that cleans the inside of the bowl portion of the toilet bowl using supplied flush water.

(Prior Art) For example, flush toilets are well known in which, after using the toilet, flush water is supplied to the toilet bowl by operating a flush valve or the like.

In such a flush toilet, the flushing water causes a siphon action in a trap section provided in the toilet bowl, thereby increasing its discharge power and enhancing the cleaning effect within the bowl section.

(Problem to be Solved by the Invention) In order to cause the siphon action, at least the drainage channel section from the trap section to a part of the drain pipe must not be filled with water or communicated with water. However, in such conventional flush toilets, the flushing water can be drained from the drain pipe even before the drainage channel is filled with water, so when supplying the flushing water, this is necessary. There is a problem in that it is necessary to supply washing water that far exceeds the amount of waste water, and therefore the amount of washing water used increases.

(Means for Solving the Problems) In order to solve the problems of the prior art, the present invention provides a system in which the wash water supplied into the bowl part la of the toilet bowl 1 by the wash water supply means 9 is caused to have a siphon effect in the trap part IC. In this flush toilet, the drain pipe 2 is provided with a control valve 4 for adjusting the opening/closing degree of the drain pipe 2, and the flush water supply means 9 is used to drain the water from the bowl part a.
A water amount detecting means 10 is provided for detecting the amount of washing water supplied to the ball part, and when starting washing, the control valve 4 is driven to the open side to supply washing water, and the ball portion is controlled based on the output signal of the water amount detecting means 10. A control means 8 is provided which drives the control valve 4 to the open side to drain water when the amount of water in the tank a reaches a predetermined amount.

(Function) According to this configuration, the amount of water discharged from the trap part to the drain pipe can be minimized until the water necessary to cause the siphon action accumulates in the trap part. Therefore, a siphon effect can be effectively caused with a small amount of water.

(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a configuration diagram showing a flush toilet according to an embodiment of the present invention.

In the figure, 1 is a toilet bowl, 2 is a drain pipe, and 3 is a water supply pipe. The toilet bowl 1 has a double structure at the upper end of the bowl portion 1a, and a water passage portion 1b is formed to guide flush water supplied from the water supply pipe 3 into the bowl portion. Further, a trap portion 1c is formed on the side of the ball portion 1a to guide the cleaning water upward once from the bottom of the ball portion 1a, and a trap portion 1c is formed between the trap portion IC and the drain pipe 3 according to the present invention. Such a regulating valve 4 is provided.

As shown in FIGS. 2 and 3, this control valve 4 has a rubber 6 attached to the inner circumferential portion of a cylindrical body 5 which is interposed between the trap portion 1c and the drain pipe 2 and has a substantially barrel shape when viewed from the side. The upper and lower end edges 6a, 6b of the rubber 6 are attached to the upper and lower locking portions 5a, 5 of the cylindrical body 5.
At the same time, a three-way valve 7 is used to allow water to flow in or out between the rubber 6 and the cylindrical body 5, and the three-way valve 7 is placed at an appropriate location in the toilet. It is driven by control means 8. Thus, according to the control valve 4, when water is allowed to flow in through the three-way valve 7, the rubber 6 expands in the radially inward direction of the cylindrical body 5 as shown in FIGS. 2 and 3, thereby narrowing the diameter of the pipe and adjusting. The valve 4 is set to the closed side, and the control valve 4 is set to the open side by discharging the power water.

The strength of the rubber 6 can be increased by covering its outer surface with a Teflon net, and in this structure, fins 6c are formed at the bottom as shown in FIG. , by causing the fin 6c to protrude radially inward when it expands, the degree of constriction (
It is also possible to efficiently increase the amount of closure.

The water supply pipe 3 leads flush water to the toilet bowl 1, and an on-off valve 9 for opening and closing the water supply pipe 3 is provided at a suitable location. Water amount detection means 10 is provided.

The on-off valve 9 is constituted by, for example, a solenoid valve or an electric valve driven by the control means 8 based on a predetermined switch operation by the toilet user or a detection signal from the user, and the water amount detection means 10 is composed of a flow rate sensor using, for example, an impeller, and its detection signal is output to the control means 8. Thus, the water amount detection means 10 detects the amount of flushing water supplied to the toilet bowl by detecting the flow rate from the start of water supply by the on-off valve 9, and the on-off valve 9 and the control means 8 etc. constitute the washing water supply means according to the present invention.

FIG. 5 is a flowchart showing the operation of this embodiment with the above configuration, and the operation of this embodiment will be explained below with reference to FIG.

As mentioned above, when the cleaning operation is started based on a predetermined cleaning operation by the user or a detection signal from the user,
The control means 8 first opens the three-way valve 7 to the control valve side to close the control valve 4 [step 11], and then opens the on-off valve 9 to start water supply [step 12]. Thereafter, the flow rate reaches a predetermined value based on the output signal of the water amount detection means 10, that is, the water level in the ball section becomes higher than the height of the top 1d of the trap section IC by a predetermined value, and the trap section IC is filled with cleaning water. The value C1 became [13Y]
It is determined whether or not [13N] [Step 13], and if the predetermined value is reached [13Y], the three-way valve 7 is switched to the drain side, the water in the valve body is drained, and the control valve 4 is opened. [Step 14]. Note that this water can be automatically discharged by simply switching the three-way valve 7 to the drain side using the elastic force of the rubber 6 and the water pressure within the trap section. Then, on condition that the supply amount of cleaning water reaches a predetermined value C2 according to the output signal of the water amount detection means 10 again [15Y], the on-off valve 9 is closed to stop the water supply [Step 16], and a series of cleaning operations are performed. Finish the operation.

Although water is introduced between the rubber 6 and the cylindrical body 5, other liquids or gases such as pressurized air may be injected instead of water.

Thus, according to this embodiment, the control valve 4 is opened after the trap section is completely filled with water with the control valve 4 closed, so that the siphon effect can be effectively generated even without supplying a large amount of water. and the cleaning can be done efficiently.

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment. For example, as a control valve, in addition to the embodiment described above, embodiments as shown in FIGS. 6 to 16 may be used. It is also possible to do this.

6 and 7 show a ball valve, and FIG. 7 shows a sectional view taken along the line BB in FIG. 6. In this embodiment, the drain pipe 2 is opened and closed by rotating a ball valve 21 by a motor 20 driven by a control means. In the figure, 22° and 23 are sealing materials.

FIG. 8 shows a control valve using a shape memory alloy, in which there is a 9. The shape memory alloy 25 and 26 shown in FIG. 9 are arranged coaxially.
The shape memory alloy 2 becomes cylindrical when heated, and the shape memory alloy 2 shown in FIG.
6 is made to memorize the shape as much as possible into a string shape when heated, and when opening the shape memory alloy 25 shown in FIG. 9 is energized to heat it, while when closing the shape memory alloy 26 shown in FIG. 10 is energized. The control valve 4 is opened or closed, respectively.

11 and 12 show the shutter valve, and FIG. 12 shows a sectional view taken along the line CC in FIG. 11. The control valve 4 is configured such that a ring member 28 is rotated by a motor 27 to open and close a shutter 29, and the drain pipe 2 is opened and closed via a sealing rubber 30.

The control valve 4 shown in FIG. 13 has a rubber 31 provided only on one side of the inner wall 2a of the drain pipe 2, and the same three-way valve 32 as shown in FIG. It was designed to do this.

14 and 15 show a butterfly valve, and FIG. 15 shows a sectional view taken along the line DD in FIG. 14. The control valve 4 has a butterfly valve 33 rotated by a motor 34 to open and close the drain pipe 2, similar to the aforementioned ball valve.

In FIG. 16, a movable iron piece 35 is operated between coils 36, and a flat valve 35a provided at the tip thereof is moved forward and backward relative to the drain pipe 2 to open and close the drain pipe 2. be.

The above has shown another embodiment of the control valve of the present invention, but in addition to this, another embodiment of the water amount detection means 10 of the present invention is as shown in FIG. A non-contact type water level sensor IOA such as a sonic sensor or an optical sensor, or a water level sensor such as a float switch (not shown) may be provided, and as shown in FIG. A pressure sensor IOB that detects the water level as pressure may be provided in the system.

Further, as for the structure of the drain pipe, as shown in FIG. 19, a drain pipe 2 with a regulating valve 4 attached in advance may be attached near the upper end of the trap part IC when constructing the toilet. This will make the toilet installation work easier.

(Effects of the Invention) As is clear from the above description, according to the present invention, the control valve is closed and the trap section is filled with cleaning water, and then the control valve is opened. Even flushing water can effectively cause a siphon action, thereby enhancing the cleaning effect, thereby providing a flush toilet that is excellent in water conservation.

[Brief explanation of the drawing]

Fig. 1 is a configuration diagram showing a flush toilet according to the present invention, Fig. 2 is a longitudinal cross-sectional view showing a control valve, Fig. 3 is a cross-sectional view taken along line A-A in Fig. 2, and Fig. 4 is another implementation of the control valve. 5 is a flowchart, FIGS. 6 to 16 are diagrams showing another embodiment of the control valve, FIGS. 17 and 18 are diagrams showing another embodiment of the water amount detection means, and FIG. The figure shows another embodiment of the drain pipe structure. In the drawings, 1 is a toilet bowl, 1a is a bowl part, 1c is a trap part, 2 is a drain pipe, 4 is a control valve, 8 is a control means, 9 is an on-off valve, and 10 is a water amount detection means.

Claims (2)

[Claims] (1) In a flush toilet in which the flush water supplied into the bowl part of the toilet bowl by the flush water supply means is caused to siphon in the trap part and discharged from the drain pipe, the drain pipe is opened and closed. A control valve for adjusting the water level is provided, and a water amount detection means is provided for detecting the amount of washing water supplied into the ball part by the washing water supply means, and when washing starts, the control valve is driven to the closed side to supply washing water. The flushing toilet is further provided with a control means for driving the control valve to an open side to drain water when the amount of water in the bowl portion reaches a predetermined amount based on the output signal of the water amount detection means. . (2) The flush toilet according to claim 1, wherein the water amount detection means is a flow rate sensor that detects the flow rate of flushing water.