JPH07310351A - Water closet bowl - Google Patents

Abstract

PURPOSE:To economize chemicals by preventing remaining in a stool of the chemicals after the washing of the stool, effectively extracting the effect of the chemicals at the same time and efficiently washing the stool in a water closet bowl in a type that the chemicals are infected into the bowl when the washing of the stool. CONSTITUTION:A chemial tank 46, an infection path 48, a chemical infection valve 50, a rim water supply path 52, a rim water supply valve 54 and a control section 56 controlling the operation of these valves are mounted. These rim water supply valve 54 and chemical infection valve 50 are operated and controlled by the control section 56 in the different modes of a first mode, in which only the rim water supply valve 54 of the rim water supply valve 54 and the chemical infection valve 50 is opened and operated, and a second mode, in which both the rim water supply valve 54 and the chemical infection valve 50 are opened and worked, at the time of the rim washing of a stool by wash water from a rim water path 22. The chemical infection valve 50 is opened and operated after a fixed short time after the opening of the rim water supply valve 54 in the second mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet bowl, and more particularly, to a flush toilet bowl of the type in which a chemical solution is injected during flushing to flush the toilet bowl.

[0002]

2. Description of the Related Art A type of flush toilet is a type having a rim water passage along the upper edge of the toilet body and supplying water introduced into the rim water passage into a toilet bowl to wash the toilet bowl. And is widely used. Also, in the case of cleaning the toilet bowl by supplying cleaning water from this kind of rim water passage,
There is known a chemical flushing type flush toilet in which a cleaning chemical is simultaneously injected into the toilet bowl during cleaning so as to enhance cleaning efficiency.

[0003]

However, in the conventional flush toilet of this type of chemical solution injection type, the chemical solution may remain in the toilet bowl after cleaning the toilet bowl, which causes the peculiar odor of the chemical solution to the toilet bowl. There is a problem in that the bubbles may remain, or bubbles caused by the medicinal solution may be generated and left in the toilet bowl, which may give discomfort to a person who later uses the toilet bowl.

Further, in the case of the conventional liquid flush toilet bowl, the effect of the liquid chemical is not always sufficiently drawn out, and there is a problem that the amount of the liquid chemical used increases and the cost required for the liquid chemical increases.

[0005]

The invention of the present application has been made to solve such a problem. Thus, the invention of the present application supplies the cleaning water into the toilet bowl from the rim water passage provided along the upper end peripheral portion of the toilet body to perform the toilet cleaning, and at the time of the cleaning, a predetermined cleaning chemical solution is supplied. In a flush toilet configured to be injected into the toilet bowl, (a) a liquid medicine tank for containing the liquid medicine therein, (b) an injection path for injecting the liquid medicine in the liquid medicine tank into the toilet bowl, (C) a chemical liquid injection valve that opens and closes the injection passage, (D) a rim water supply passage that supplies water to the rim water passage, and (E) a rim water supply valve that opens and closes the rim water supply passage, (F) A first mode in which only the rim water supply valve of the rim water supply valve and the chemical liquid injection valve is opened during rim cleaning in which cleaning water is supplied from the rim water passage to perform toilet cleaning, and the rim Multiple modes including a second mode in which both the water supply valve and the chemical liquid injection valve are opened The operation control of the rim water supply valve and the chemical liquid injection valve is performed, and in the second mode, the rim water supply valve and the liquid chemical injection valve are operated so that the chemical liquid injection valve is opened after a predetermined short time has elapsed after the opening of the rim water supply valve. A control unit for controlling the chemical liquid injection valve is provided (Claim 1).

According to another invention of the present application, in the flush toilet bowl according to claim 1, the control unit controls the rim water supply valve and the chemical liquid in the second mode for the same period of time after the chemical liquid injection valve is opened. It is characterized in that the injection valve is opened (claim 2).

According to still another aspect of the present invention, in the flush toilet bowl according to claim 1 or 2, after the control unit opens the rim water supply valve after the first mode when the rim is washed and when the rim is washed. While maintaining the valve open state, the chemical liquid injection valve is opened with a certain delay after a certain time, and after the rim water supply valve and the chemical liquid injection valve are closed, the rim water supply valve is opened again for a predetermined time with an interval. The valve control is performed in a plurality of types of modes including the third mode, and at that time, either the first mode or the third mode is selected to control the operation of the rim water supply valve and the chemical liquid injection valve. (Claim 3).

According to still another invention of the present application, in the flush toilet bowl according to claim 1, the control unit is in either the second mode or the third mode when the rim is washed with the chemical liquid. Is selected to control the operation of the rim water supply valve and the chemical liquid injection valve (claim 4).

Still another invention of the present application is to claim 1, 2, 3
Or in the flush toilet of item 4, the flush toilet is a siphon type flush toilet, and the control unit seals water after a predetermined time has passed after the rim cleaning in the first mode, the second mode or the third mode. It is characterized in that the rim water supply valve is opened for a predetermined time in order to perform the subsequent water supply, and the chemical liquid injection valve is kept closed during the subsequent water supply (claim 5).

Still another invention according to the present application is as follows.
In 3, 4, or 5, the flush toilet is a siphon jet flush toilet, a jet hole for ejecting jet water toward the trap drainage channel, and a jet water channel for supplying water to the jet hole. A jet water supply valve for opening and closing the water supply passage for the jet, and the control section,
In the first, second or third mode, the jet water supply valve is opened under the closed state of the chemical liquid injection valve during or after the rim cleaning, and the post water supply is performed after the valve is closed. Open the rim water supply valve of,
Further, in the second and third modes, the opening time of the jet water supply valve is set to be longer than that in the first mode (claim 6).

Still another invention of the present application is to provide claims 1, 2,
In the flush toilet of 3, 4, 5 or 6, the control unit,
It is characterized in that the valve control for the toilet cleaning in the second or third mode accompanied by the chemical liquid injection is performed at a predetermined time (Claim 7).

[0012] Still another invention of the present application is as follows.
In the flush toilet bowl of 3, 4, 5, 6 or 7, the control unit performs valve control for flushing the toilet bowl in the second or third mode with the chemical solution injection, and flushing toilet bowl in the first mode. Is performed every time a predetermined number of times is continuously determined (claim 8).

[0013]

As described above, according to the first aspect of the invention, the first mode in which only the rim water supply valve is opened, that is, the first mode without injection of the chemical liquid, and the rim water supply valve and the chemical liquid injection valve are provided. A second mode in which both valves are opened, that is, a toilet mode is configured to be performed in a plurality of different modes including a second mode involving injection of a chemical solution when cleaning the toilet bowl, and in a second mode involving injection of a chemical solution, Do not supply cleaning water and cleaning chemicals (hereinafter simply referred to as chemicals) to the toilet bowl at the same time.
First, the cleaning water is first supplied and then the chemical solution is injected.

In the toilet cleaning in the second mode,
First, since the cleaning liquid supplied first wets the inner surface of the toilet bowl and then the chemical solution is injected, the chemical solution spreads widely in the toilet bowl and is evenly distributed in every corner. Can effectively clean the toilet bowl. That is, according to the present invention, the effect of the drug solution is sufficiently brought out.

In addition, in the present invention, since the toilet bowl is less contaminated and only the cleaning water is supplied into the toilet bowl when it is not necessary to inject the chemical solution (first mode), the chemical solution is wastefully consumed. In addition, the effect of the chemical liquid can be sufficiently brought out, so that the consumption amount of the chemical liquid can be reduced and the cost required for the chemical liquid can be reduced.

In the second mode, it is desirable that the supply duration of the cleaning water and the chemical solution after the start of the chemical solution injection be equal to that in the rim cleaning in the first mode (claim 2). This is because if the supply time of the cleaning water and the chemical solution thereafter is shortened by delaying the start of injection of the chemical solution, there is a risk that the toilet bowl cannot be sufficiently cleaned.

The above chemical solution has a greater effect of peeling off stains if it remains in the toilet bowl for a certain period of time, rather than being immediately flushed by the cleaning water after being poured into the toilet bowl. Therefore, in the invention of claim 3, the rim water supply valve and the chemical liquid injection valve are closed at the time of cleaning the rim, and then the rim water supply valve is opened again at a certain time interval to supply water to the rim. According to this, the chemical solution can be more effectively worked, the toilet bowl can be cleaned more efficiently, and the chemical solution can be further saved.

It is desirable that the toilet cleaning be performed by selectively selecting the second mode or the third mode when cleaning the rim accompanied by injecting the chemical liquid (claim 4). In this way, there is an advantage that the toilet bowl can be cleaned in a more suitable pattern according to the soiled condition of the toilet bowl.

According to a fifth aspect of the present invention, in the siphon-type flush toilet, the chemical liquid injection valve is kept closed when rim water supply (post-water supply) for sealing water after rim cleaning is performed. Thus, according to the present invention, the liquid medicine remaining in the toilet bowl after the rim cleaning can be washed away by water supply after sealing, and finally the liquid medicine can be prevented from remaining in the toilet bowl.

Thus, when a chemical solution is used for cleaning the toilet bowl, it is possible to prevent the odor peculiar to the chemical solution or the bubbles due to the chemical solution from remaining in the toilet bowl after cleaning, which makes it comfortable for the person who uses the toilet bowl later. You can use the toilet.

Next, in the siphon jet type flush toilet of the present invention, jet water is jetted under the closed state of the chemical liquid injection valve, and the jet in the second or third mode is accompanied by the injection of the chemical liquid. The jetting of water is performed longer than in the first mode which does not involve the injection of the chemical liquid. According to the present invention, compared with the case where the chemical liquid is injected into the toilet bowl during jetting of the jet water. In addition, it is possible to prevent the chemical solution from being wasted without performing the cleaning action, and the chemical solution injected during rim cleaning can be sufficiently discharged by jetting jet water, preventing the chemical solution from remaining in the toilet bowl. it can.

Usually, the frequency of use of the toilet bowl is not uniform throughout the day, and it is generally determined that the time of use is particularly high. Therefore, according to the invention of claim 7, the toilet bowl is cleaned in the second mode or the third mode involving the injection of the above-mentioned liquid medicine at a certain time when the frequency of use is high. According to the present invention, the toilet bowl is used. It is possible to perform toilet bowl cleaning with injection of a medical fluid at a time when the frequency is high and the toilet bowl is most heavily contaminated, and the toilet bowl can be efficiently washed while suppressing the amount of the medical fluid used.

According to the invention of claim 8, the toilet cleaning in the second mode or the third mode with the liquid chemical injection is performed every predetermined number of times of the toilet cleaning in the first mode without the liquid chemical injection. Therefore, according to the present invention, the toilet bowl can be efficiently washed while saving the chemical solution.

[0024]

Embodiments of the present invention will now be described in detail with reference to the drawings. In FIG. 1, 10 is a flush toilet, and 12
Is the body of the toilet. The toilet body 12 has a toilet bowl 14 on the upper part and leg portions 16 on the lower part.

A rim 18 is provided on the upper end of the toilet body 12 along the periphery thereof. The inside of the rim 18 is partitioned by a partition wall 20 into a rim water passage 22 on the inner peripheral side and a chemical liquid passage 24 on the outer peripheral side.

The rim water passage 22 communicates with a water supply chamber 26 provided in the rear part of the toilet, and a large number of water spray holes 28 are distributed along the lower surface thereof to guide the water from the water supply chamber 26 to the rim water passage 22. The cleaning water that has been splashed is used as the water spray holes
It is designed to be ejected vigorously toward the toilet bowl 14. On the other hand, a large number of chemical liquid outflow holes 29 are dispersedly arranged in the chemical liquid passage 24 on the outer peripheral side, and a predetermined chemical liquid 47 (see (B)) introduced into the chemical liquid passage 24 has these outflow holes 29.
Further, it flows out into the toilet bowl 14.

A trap portion 30 is provided on the toilet body 12. The trap portion 30 has an inlet portion 32 located at the bottom of the toilet bowl 14, and a drain passage 34 extending from the inlet portion 32.

The drainage passage 34 is provided with a first passage 34A for sealing water, which extends curving upward following the inlet 32,
The second passage 34 extending downward from the upper end of the first passage 34A
B and a third passage 34C extending horizontally rightward from the lower end of the second passage 34B.

In other words, in this example, the portion mainly from the first passage 34A to the second passage 34B and the second passage 3 at the time of cleaning the toilet bowl.
4B to the third passage 34C, and further the third passage 3
A large resistance to running water is generated at the portion where 4C is transferred to the outlet portion 36, whereby the trap drainage passage 34 is quickly filled with water and a siphon action is caused.

A jet hole 38 is provided in the toilet body 12 near the bottom of the toilet bowl 14. Jet hole 38
Is provided toward the trap drainage passage 34, and one end of a jet water supply passage 40 which is provided independently of the jet hole 38, that is, which is provided separately from a rim water supply passage 52 which will be described later, is connected. Has been done. The other end of the jet water supply passage 40 is connected to the main water supply passage 42. Further, on the jet water supply passage 40, a jet water supply valve (solenoid valve)
44 are provided.

Reference numeral 46 is a chemical liquid tank for containing a chemical liquid 47 therein, and an injection path 48 extends from the tank 46. The tip of the injection path 48 is connected to the chemical passage 24, and a chemical injection valve (electromagnetic valve) 50 is provided on the injection path 48.

Jet water supply channel 40 of the main water supply channel 42
A rim water supply path 52 extends from the branching point to the water supply chamber 26, and its tip is connected to the water supply chamber 26. A rim water supply valve (electromagnetic valve) 54 is provided on the rim water supply passage 52.

The rim water supply valve 54 and the jet water supply valve 4
4. Further, the chemical liquid injection valve 50 is electrically connected to the control unit 56 and is controlled by the control unit 56.

FIG. 2 shows modes of control by the control unit 56. As illustrated, in this example, the control unit 56 controls the chemical liquid injection valve 50, the jet water supply valve 44, and the rim water supply valve 54 in three different modes of the first mode, the second mode, and the third mode.

Thus, the first mode is a toilet flushing mode that does not involve injection of a chemical liquid. In this first mode, the rim water supply valve 54 is _first opened for a fixed time (T ₁ ) to perform rim water supply. That is, the cleaning water is guided to the rim water passage 22 to supply the cleaning water into the toilet bowl 14 to clean the rim.

Thereafter, the rim water supply is stopped, and at the same time, the jet water supply valve 44 is opened to eject the jet water from the jet hole 38 (T ₂ ). This causes the siphon action to discharge the waste in the toilet bowl 14. Simultaneously with the end of the jet water supply, the rim water supply (T ₃ ) is performed again and the post-water supply for sealing water is performed.

Next, the second mode is a toilet flushing mode in which a chemical solution is injected. Similar to the first mode, rim water supply for rim cleaning is first performed (T ₄ ), and at the same time as the rim cleaning ends. Jet water is supplied (T ₅ ). Then, at the same time when the jet water supply is completed, rim water supply for sealing (post-water supply) is performed again (T ₃ ). At the same time, during the rim water supply for cleaning the rim, the liquid medicine injection valve 50 is opened to inject the liquid medicine 47 into the toilet bowl 14 (T _{6, where} T ₆ may be equal to T ₁₎ . it can).

However, the injection operation of the chemical liquid 47 is not performed at the same time as the start of the rim water supply, but after the rim water supply is first started, the chemical liquid injection is performed with a delay of time t. Further, in this second mode, the jet water supply time T ₅ is set longer than the jet water supply time T ₂ in the first mode.

On the other hand, in the third mode, the rim water supply for cleaning the rim is performed twice. That is, first
After the start of the rim water supply, the liquid chemical injection is performed with a delay of time t (T ₈ ; T ₈ can be equal to T ₆ ). Only the rim water supply is performed again at a time interval (T ₄ ). When the second rim water supply is completed, jet water supply is performed (T ₅ ), and when the jet water supply is completed, post-water supply for sealing water is performed (T ₃ ).

The control unit 56 selects one of the first mode without the chemical injection and the second mode or the third mode with the chemical injection based on the operation of the push button or the like by the toilet user. The rim water supply valve 54, the jet water supply valve 44, and the chemical liquid injection valve 50 are controlled according to those modes. Alternatively, they are automatically selected for valve control based on dirt sensing.

According to the present embodiment, in the second mode or the third mode involving the injection of the chemical liquid, the liquid injection is first performed after the rim water supply is performed, that is, the cleaning water is supplied to the inside of the toilet bowl 14 to remove the feces. Since the chemical solution is injected while the inner surface of the bowl 14 is sufficiently wet, the chemical solution can be sufficiently and uniformly dispersed in every corner of the toilet bowl 14, and the toilet bowl can be efficiently cleaned.

Further, when the first mode is selected, the chemical solution is not injected, so that the degree of contamination is small, and the chemical solution is automatically injected even when there is no need to inject the chemical solution. Therefore, it is possible to suppress the consumption of the chemical liquid to a small amount.

Further, in this example, in the second mode or the third mode with the injection of the chemical liquid, the jet water supply time is longer than that in the first mode without the injection of the chemical liquid.
Since the chemical solution 47 injected into the toilet bowl is sufficiently discharged, and the chemical solution is not injected at the time of post-water supply for sealing water, the chemical solution 47 remains in the toilet bowl after cleaning the toilet bowl, which is unique. It has an advantage that it is possible to prevent generation of odor or leaving bubbles.

Further, in the third mode, after the chemical solution 47 is injected into the toilet bowl 14, the chemical solution 47 is not immediately flushed by the cleaning water, and the chemical solution 47 remains in the toilet bowl 14 for a certain period of time. , The chemical liquid 47 exerts a sufficient peeling effect on dirt, and when the dirt is sufficiently peeled off, the dirt is washed away by performing the second rim cleaning again, so that the toilet cleaning is efficiently performed.

In the present invention, the toilet cleaning in the second mode or the third mode with the injection of the chemical liquid is performed at a specified time within a day, that is, the toilet is used most frequently, and therefore the toilet is not contaminated. It can be done at the most intense time. In this case, the toilet bowl can be efficiently washed while suppressing the consumption amount of the chemical liquid 47 to be small.

Alternatively, as another embodiment, after the toilet bowl cleaning in the first mode is repeated a predetermined number of times, that is, every time the toilet bowl cleaning in the first mode is performed a predetermined number of times, the toilet bowl in the second mode or the third mode. It is also possible to perform cleaning. Also in this case, the toilet bowl can be efficiently washed while suppressing the consumption amount of the chemical liquid 47 to be small.

Although the embodiment of the present invention has been described in detail above, this is merely an example. For example, in the above example, the supply of the chemical liquid 47 and the water passage for the rim water supply are separately provided, and the chemical liquid 47 and the cleaning water are supplied into the toilet bowl 14 through different routes, respectively. Alternatively, it is possible to connect an injection passage of the chemical liquid 47 to the rim water passage so that both of them flow into the toilet bowl 14 while the chemical liquid 47 is being injected into the rim water supply. It is also possible to use the water in the wash water tank as a water supply source for rim water supply and jet water supply.

Further, the setting of the time in FIG. 2 is merely an example, and the rim cleaning, jet water supply,
It is possible to appropriately set or change the time of the chemical solution injection, the post-water supply for sealing water, etc., as needed.
At that time, it is possible to make the chemical injection time during rim cleaning in the second and third modes shorter than the rim cleaning time in the first mode. Furthermore, the present invention can be applied to a flush urinal, and can be configured in a form in which various changes are made without departing from the spirit of the invention.

[Brief description of drawings]

FIG. 1 is a view showing a flush toilet which is an embodiment of the present invention.

FIG. 2 is a diagram showing a pattern of valve control by the control unit of FIG.

[Explanation of symbols]

 10 siphon jet flush toilet 12 toilet body 14 toilet bowl 22 rim water passage 30 trap portion 34 drainage passage 38 jet hole 40 jet water supply passage 44 jet water supply valve 46 chemical liquid tank 47 chemical liquid 48 injection passage 50 chemical liquid injection valve 52 rim water supply passage 54 rim water supply valve 56 control unit

Claims (8)

[Claims] 1. A toilet bowl is provided with cleaning water from a rim water passage provided along the upper peripheral edge of the toilet body to wash the toilet bowl, and a predetermined cleaning chemical solution is supplied in the toilet bowl during the cleaning. (B) a liquid medicine tank for containing the liquid medicine therein, (b) an injection passage for injecting the liquid medicine in the liquid medicine tank into the toilet bowl, and (c) the passage for injection. And (d) a rim water supply passage for supplying water to the rim water passage, (e) a rim water supply valve for opening and closing the rim water passage, and (f) cleaning from the rim water passage. Both of the rim water supply valve and the chemical solution injection valve, and the first mode in which only the rim water supply valve of the rim water supply valve and the chemical solution injection valve is operated to be opened at the time of rim cleaning for supplying toilet water. Water supply to those rims in multiple modes, including the second mode of opening the valve The rim water supply valve and the chemical liquid injection valve are operated to control the valve and the chemical liquid injection valve, and in the second mode, the rim water supply valve and the chemical liquid injection valve are operated so as to open the chemical liquid injection valve after a predetermined short time has elapsed after the opening of the rim water supply valve. And a control unit for controlling the flush toilet. 2. The flush toilet according to claim 1, wherein the control unit opens the rim water supply valve and the chemical liquid injection valve for the same period of time as in the first mode after opening the chemical liquid injection valve in the second mode. A flush toilet which is characterized by being made to be. 3. The flush toilet bowl according to claim 1 or 2, wherein the control unit sets the first mode when the rim is washed,
At the time of cleaning the rim, first, the rim water supply valve is opened, and then the chemical liquid injection valve is opened with a certain short delay while maintaining the open state, and after the rim water supply valve and the chemical liquid injection valve are closed, an interval is set. Then, the valve control is performed again in a plurality of kinds of modes including the third mode in which the rim water supply valve is opened for a predetermined time again, and at that time, one of the first mode and the third mode is selected and A flush toilet bowl characterized in that it controls operation of a rim water supply valve and a chemical injection valve. 4. The flush toilet according to claim 1, 2, or 3, wherein the control unit selects either the second mode or the third mode during the rim cleaning accompanied by the chemical injection. A flush toilet bowl characterized in that it controls operation of a rim water supply valve and a chemical injection valve. 5. The flush toilet according to claim 1, 2, 3 or 4, wherein the flush toilet is a siphon type flush toilet, and the control unit is configured to operate the rim in the first mode, the second mode or the third mode. After washing, after a lapse of a predetermined time, the rim water supply valve is opened for a predetermined time in order to perform a water supply for sealing, and the chemical liquid injection valve is kept closed during the water supply. A flush toilet characterized in that 6. The flush toilet according to claim 1, 2, 3, 4 or 5, wherein the flush toilet is a siphon jet flush toilet, and a jet hole for ejecting jet water toward a trap drainage channel, and the jet. A jet water supply passage for supplying water to the hole, and a jet water supply valve for opening / closing the jet water supply passage, and the control unit is in the middle of the rim cleaning in the first, second or third mode. Alternatively, after the end, the jet water supply valve is opened under the closed state of the chemical liquid injection valve, and after the valve is closed, the rim water supply valve for the post water supply is opened, and the second In the third mode, the opening time of the jet water supply valve is set to be longer than that in the first mode. 7. The flush toilet according to claim 1, 2, 3, 4, 5 or 6, wherein the control unit controls a valve for flushing the toilet in the second or third mode accompanied by the injection of the chemical solution. A flush toilet bowl characterized in that the flush toilet is operated at a predetermined time. 8. The flush toilet according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the control unit is a valve for flushing the toilet in the second or third mode with the liquid injection. A flush toilet characterized in that control is performed every time the toilet cleaning in the first mode is continuously performed a predetermined number of times.