JPH01287331A - Water closet - Google Patents

Abstract

PURPOSE:To improve the effect of water saving by supplying the washing water by a controlling valve of a drain pipe and a water-level sensor in a bowl section in case the washing starts and draining based on an output signal of the water- level sensor when the water-level in the bowl section reaches a specific water- level. 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 at 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-level sensor 10 detecting the water-level in the bowl section 1a 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- level sensor 10 when the water-level in the bowl section 1a reaches a specific water-level.

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 method for siphoning the wash water supplied into the bowl portion a of the toilet bowl 1 by the wash water supply means 9 or the like in the trap portion 1c. In a flush toilet that discharges water from a drain pipe 2 by raising water, the drain pipe 2 is provided with a control valve 4 for adjusting the opening/closing degree of the drain pipe 2, and the water level in the ball portion a is detected. When a water level sensor 10 is provided, the control valve 4 is driven to the closed side at the start of cleaning to supply cleaning water, and the water level in the ball portion a based on the output signal of the water level sensor 10 reaches a predetermined water level. is provided with a control means 8 for driving the control valve 4 to the open side to drain water.

(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 ball part 1a, and a water flow passage part 1b is formed to guide the flushing water supplied from the water supply pipe 3 into the bowl part, and a water level inside the bowl part is detected on the wall surface of the water passage part 1b. A water level sensor 10 according to the present invention is provided. This water level sensor 10 emits ultrasonic waves to the water surface inside the ball part, detects the distance to the water surface, that is, the water level, by detecting the time until the reflected wave is detected, and sends the detection signal to an appropriate location in the toilet. It outputs to the control means 8 provided.

A trap IC is formed on the side of the ball part 1a to guide the cleaning water upward from the bottom of the ball part 1a, and between the trap 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.
b, and allows water to flow in or out between the rubber 6 and the cylindrical body 5 by means of a three-way valve 7, which is driven by a control means 8. Thus, according to the control valve 4, the three-way valve 7
By allowing water to flow in, the rubber 6 expands in the radially inward direction of the cylindrical body 5 as shown in Figs. 2 and 3, narrowing the diameter of the pipe, closing the control valve 4, and - draining the force water. By doing so, the control valve 4 is opened.

The strength of this 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. It is composed of an electromagnetic valve or an electric valve that is driven by a control means 8 based on a user's detection signal, etc., and the on-off valve 9 and the control means 8 constitute the cleaning water supply means according to the present invention. There is.

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 113], and then opens the on-off valve 9 to start water supply [step 12]. Thereafter, based on the output signal of the water level sensor 10, the water level inside the ball section becomes a predetermined value, that is, the water level inside 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 1c is filled with cleaning water. It is determined whether [13Y] or not [13N] the value L1 has reached such that the
3], when 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. After that, the water level sensor 10
[15Y] The on-off valve 9 is closed and the water supply is stopped [Step 161, the series of cleaning operations ends] on the condition that the supply amount of cleaning water reaches a predetermined value LO according to the output signal of [15Y].

Although water is injected 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, the control valve may have a structure as shown in FIGS. 6 to 16 in addition to the above embodiment. 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, as another embodiment of the water level sensor 10 of the present invention, as shown in FIG. , an arm 42 that swingably supports the float 41 at one end, a limit switch 43 that is opened and closed by swinging of the other end 42a of the arm 42 as the float 41 moves upward, and a protective cover that covers these. 44
Furthermore, instead of such a swinging arm type, as shown in FIG. A ball-shaped float 47 that moves up and down in accordance with the up and down movement of the water level may be provided in the holder, and the upward movement of the float 47 may close a limit switch 48 provided at the upper end of the cylindrical body 46. Furthermore, instead of these float switches, as shown in FIG.
The light receiving element 49b can detect the reflected light only after the light emitted from the ball 9a is reflected on the water surface in the ball that has reached a predetermined water level. I can do it.

Further, as for the structure of the drain pipe, as shown in FIG. 20, a drain pipe 2 with a regulating valve 4 attached in advance may be attached near the upper end of the trap part 1c when constructing the toilet bowl. 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 wash water, and then the control valve is opened. However, it can effectively cause a siphon effect, increasing the cleaning effect,
This makes it possible to provide a flush toilet that is highly water-saving.

[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 to 19 are diagrams showing another embodiment of the water level sensor, and FIG. 20 is a diagram showing an example. FIG. 2 is a diagram showing 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 level sensor.

Claims (1)

[Scope of Claims] A flush toilet in which flush water supplied into the bowl portion of the toilet bowl by a flush water supply means or the like is caused to cause a siphon action in a trap portion and is discharged from a drain pipe, comprising: A control valve is provided to adjust the opening/closing degree of the drain pipe, and a water level sensor is provided to detect the water level in the ball portion, and at the start of cleaning, the control valve is driven to the closed side to supply wash water, and the water level sensor is A flush toilet characterized by comprising a control means for driving the control valve to an open side to drain water when the water level in the bowl portion reaches a predetermined water level based on an output signal.