JP2002106028A - Closet bowl washing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small sized toilet bowl washing device capable of realizing a variable flow regulation in a device for washing a toilet bowl by an electric washing means. SOLUTION: A proportional valve with opening and closing function is used as an actuator used for the toilet bowl washing device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for cleaning a toilet bowl or a urinal with an electric actuator,
The present invention relates to a small-sized toilet bowl washing device capable of variably controlling a flow rate during washing.

[0002]

2. Description of the Related Art As a toilet cleaning apparatus using an electric actuator, Japanese Patent Laid-Open No. 5-156 shown in the system diagram of FIG.
679, "A flush valve for toilets and a method for automatically prewashing a siphon-type Western style toilet".

[0003] In this toilet flushing apparatus, a solenoid main valve (control valve) controls opening and closing of water in a pressure chamber (control chamber) to control opening and closing of a piston main valve to clean the toilet. In the siphon type toilet, there is a case where the siphon phenomenon occurs due to the washing water at the time of pre-washing, and the problem that the water level of the trap water is lowered may occur.To prevent this, it is necessary to separate it from the main system A small flow rate pre-cleaning was performed by providing a small flow bypass passage for pre-cleaning and an electric open / close valve.

As another conventional example, Japanese Patent Application Laid-Open No. Hei 7-109756, entitled "Flash Valve" as shown in FIG.

This toilet flushing device is similar to the toilet flushing device in that the electromagnetic open / close valve controls the opening and closing of water in the pressure chamber to control the opening and closing of the piston main valve to wash the toilet. The closing speed of the main valve is changed to two types by controlling opening and closing of the supply of water to the pressure chamber by an electric opening / closing valve provided separately from the valve and a bypass flow passage. The difference is that the flow rate characteristic for the urine and the flow rate characteristic for the urine as shown in FIG. 8 are appropriately switched to prevent wasteful water from flowing.

As described above, these toilet flushing devices are different in structure and purpose, but are provided with a plurality of on-off valves and a plurality of bypass passages to realize a plurality of flushing patterns. In common.

[0007]

However, these toilet bowl cleaning apparatuses have the disadvantage that the size of the toilet bowl cleaning apparatus becomes extremely large when trying to have a plurality of cleaning patterns, and the cleaning pattern is varied. It was difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object of the present invention is to provide a small-sized toilet flushing apparatus which realizes variable flow control.

[0009]

According to the present invention, there is provided an apparatus for cleaning a toilet using an electric actuator by a signal from a sensor or a manual switch, wherein the amount of the cleaning water is controlled using a proportional valve. Features.

Further, the present invention is characterized in that, in the above configuration, the proportional valve has an opening / closing function.

Further, the present invention is characterized in that feedback control is performed by providing a flow rate sensor or the like on the drain channel side.

Further, the present invention relates to a toilet cleaning device,
It is characterized in that the flow rate of the pressure chamber is controlled by a needle type proportional valve to proportionally control the amount of washing water of the main valve.

Further, the present invention is characterized in that, in the flow rate control of the pressure chamber of the needle type proportional valve, the water in the pressure chamber is discharged to a place where no back pressure is applied.

Further, the present invention is characterized in that a dither signal is superposed on the proportional control by the needle type proportional valve.

Further, the present invention is characterized in that a small flow rate cleaning is performed by using the proportional valve during the preliminary cleaning.

Further, the present invention is characterized in that a small flow rate cleaning is performed when replenishing trap water after the cleaning.

Further, the present invention is characterized in that the flushing water amount of the proportional valve is set to two types, one for stool and one for urine.

According to this configuration, since the proportional valve is used as the actuator, the amount of washing water can be variably controlled, and an appropriate flow control according to the application can be realized.

Since the proportional valve is provided with an opening / closing function, there is no need to provide a separate opening / closing valve to stop the washing, and the size of the toilet flushing apparatus does not increase.

Further, since a flow rate sensor is provided on the drain flow path side to perform feedback control, highly accurate flow rate control can be performed.

Further, since the flushing water amount of the main valve is controlled by controlling the pressure of the pressure chamber by the needle type proportional valve, the flow rate from a small flow rate to a large flow rate can be accurately proportionally controlled.

Further, in the flow rate control of the pressure chamber of the needle type proportional valve, since the water in the pressure chamber is discharged to a place where the back pressure is not applied, a highly accurate proportional control without adverse effects due to the back pressure can be performed. Can be.

In addition, since the dither signal is superimposed on the proportional control by the needle type proportional valve, highly accurate proportional control with less hysteresis can be performed.

In addition, the proportional valve can be used for cleaning at a small flow rate so as not to cause a siphon phenomenon at the time of pre-cleaning, so that there is no problem such as a shortage of trap water during the main cleaning.

Further, trap water is replenished at such a small flow rate that the siphon phenomenon does not occur after the main cleaning of the toilet, so that there is no problem that the trap water becomes insufficient at the next main cleaning.

Further, if the amount of flush water of the proportional valve is set to two types for urinals and urinals, waste of flowing a large amount of water at urination does not occur.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to make the contents of the present invention easier to understand, the following description will be made based on the illustrated embodiment.

[0028]

FIG. 1 is a system diagram of a toilet flushing device using a proportional valve according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a Western-style toilet equipped with the toilet flushing device of the embodiment. FIG. FIG. 4 is a cross-sectional view of a needle type proportional valve according to an embodiment of the present invention. FIG. 4 is a system diagram of an embodiment of a toilet flushing device in which large / small flush switching is set. FIG. FIG. 6 is a system diagram of a conventional toilet flushing device for performing pre-washing, and FIG. 7 is an external configuration diagram of a conventional toilet flushing device with a size switching function.
FIG. 9 is a flow rate characteristic diagram for stool washing, and FIG. 9 is a flow rate characteristic diagram for urine washing.

As shown in FIG. 1, a water supply channel 2 for supplying flush water and a drain channel 3 for sending flush water to the toilet are connected to the toilet flushing apparatus 1 of the embodiment. The main valve 4 of the cleaning device blocks the flow.

The pressure chamber 6 formed between the upper portion of the main valve and the valve body 5 is connected to a pressure chamber flow path 7 communicating with a drain flow path. A proportional valve 8 that can be adjusted steplessly is provided, and a sensor 9 or a manual switch 10 serving as a trigger for flowing washing water is provided in the vicinity of the proportional valve 8, and the sensor 9 or the manual switch 1 is provided.
Control circuit 1 that drives proportional valve 8 with an electrical signal from 0
1 is provided.

Here, when a current is applied from the control circuit 11 to open the closed proportional valve 8, water flows from the closed pressure chamber 6 to the drainage channel 3 through the pressure chamber channel 7. As a result, the pressure in the pressure chamber 6 drops rapidly, and the main valve 4 opens due to pressure balance.

At this time, since the opening of the proportional valve 8 changes in accordance with the applied current, the opening of the main valve 4 linked thereto can also be controlled by the applied current to the proportional valve 8.

Further, since the flow rate sensor 12 is provided in the middle of the drain flow path 3, more accurate flow rate control can be performed by feedback control.

According to the above configuration, since the variable flow control can be performed by the proportional valve 8, unlike the related art, it is not necessary to use a corresponding number of on-off valves to realize a plurality of cleaning patterns. The size of the toilet flushing device can be reduced.

Further, since the flow rate sensor 12 is provided in the middle of the drain flow path 3, more accurate flow rate control can be performed by performing feedback control.

FIG. 2 is a cross-sectional view showing a state in which the toilet flushing device of the embodiment is attached to a Western-style toilet. However, since the size of the toilet flushing device is not large as compared with the prior art, the degree of freedom in construction is greatly improved. ing.

FIG. 3 is a sectional view of the needle type proportional valve 13 used in the toilet flushing device of the embodiment. The structure can be simplified because the pressure of the proportional valve does not need to be balanced. Since the dither signal is superposed on the needle valve and controlled, the flow rate can be controlled with high accuracy with little hysteresis.

FIG. 4 shows manual switches 14 and 15 of different sizes.
FIG. 1 is a system diagram of a toilet flushing device provided with a flushing device. Since large and small flushing can be switched according to the use, there is no waste of flowing a large flow of water when urinating.

In FIG. 4, a manual switch is used to switch between large and small cleaning. However, the present invention is not limited to this. Switching may be performed.

FIG. 5 is a flow characteristic diagram when replenishing trap water after the main cleaning. Since the trap water can be replenished at a small flow rate so that the siphon phenomenon does not occur after the main cleaning,
There is no problem such as a shortage of trap water at the next cleaning.

The above description relates only to one embodiment of the present invention, and does not mean that the present invention is limited only to the above content. For example, the proportional valve need not be a proportional solenoid, but may be a stepping motor or the like. The main valve of the needle type proportional valve does not need to be a diaphragm valve, but may be a piston valve. Further, the toilet is not limited to a toilet but may be a urinal. In addition, the toilet that requires makeup water is not limited to the siphon type, and any toilet that utilizes the siphon phenomenon, such as a siphon-set toilet, may be used.

[0042]

According to the present invention, there is provided an apparatus for cleaning a toilet using an electric actuator in accordance with a signal from a sensor or a manual switch, wherein the amount of the flush water is controlled using a proportional valve having an opening / closing function. Since the apparatus is configured, a variable flow control can be realized, and a small-sized toilet flushing apparatus can be provided.

[Brief description of the drawings]

FIG. 1 is a system diagram of a toilet flushing apparatus using a proportional valve according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a Western-style toilet provided with the toilet flushing device of the embodiment.

FIG. 3 is a sectional view of a needle type proportional valve according to an example of the embodiment;

FIG. 4 is a system diagram of an embodiment of a toilet flushing apparatus in which large / small flush switching is set.

FIG. 5 is a flow rate characteristic diagram in a case where trap water is replenished after the main cleaning by the toilet cleaning device of the embodiment.

FIG. 6 is a system diagram of a conventional toilet flushing apparatus for performing preliminary cleaning.

FIG. 7 is an external configuration diagram of a conventional toilet flushing device with a size switching function.

FIG. 8 is a flow rate characteristic diagram for stool cleaning of a conventional toilet bowl cleaning device with a size switching function.

FIG. 9 is a flow rate characteristic diagram for urinal cleaning of a conventional urinal cleaning device with a size switching function.

[Explanation of symbols]

1 ... toilet flushing device, 2 ... water supply channel, 3 ... drainage channel, 4 ...
Main valve, 5: Valve body 6, Pressure chamber, 7: Pressure chamber flow path, 8
... Proportional valve, 9 ... Sensor, 10 ... Manual switch, 11
... Control circuit, 12 ... Flow sensor, 13 ... Needle type proportional valve, 14 ... Manual switch for stool, 15 ... Manual switch for urine

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2D039 AA02 AA04 AC03 AC04 BB01 DA05 FB02 FD01 FD02

Claims (9)

[Claims] 1. A toilet cleaning apparatus for cleaning a toilet using an electric actuator by a signal from a sensor or a manual switch, wherein the amount of the cleaning water is controlled by using a proportional valve. . 2. The toilet flushing apparatus according to claim 1, wherein the proportional valve has an opening / closing function. 3. The toilet flushing apparatus according to claim 1, wherein the proportional valve performs feedback control. 4. The toilet flushing device according to claim 1, wherein the toilet flushing device controls the flow rate of the pressure chamber by a needle type proportional valve to proportionally control the flush water amount of the main valve. . 5. The toilet flushing apparatus according to claim 4, wherein in the flow rate control of the pressure chamber of the needle type proportional valve, water in the pressure chamber is discharged to a place where no back pressure is applied. 6. The toilet flushing apparatus according to claim 4, wherein a dither signal is superposed on the proportional control by the needle type proportional valve. 7. The toilet bowl washing apparatus according to claim 1, wherein said toilet bowl washing apparatus carries out a small flow rate washing using said proportional valve at the time of preliminary washing. 8. The toilet flushing device according to claim 1, wherein said toilet flushing device performs a small flow rate flush when replenishing trap water after flushing. 9. The toilet flushing device according to claim 1, wherein the flushing amount of the proportional valve is set to two types, i.e., stool and urine.