JPH08302797A - Washing method for siphon jet type water closet - Google Patents

Abstract

PURPOSE: To promote efficiency when a water closet is washed to economize water consumption and, at the same time, to make it possible to miniaturize a washing water tank. CONSTITUTION: Washing water is flowed along the inside of a bowl 12 from a rim water channel 16 provided along the circumferential section of the upper end of the bowl 12, at the same time, in a washing method of a siphon jet type water closet jetting the jet water for siphon operation from a jet hole 32 opened toward a drainage trap section 20 of the water closet, the jet water is netted from the jet hole 32 at timing delayed by a specific time from the commencement of the flowout of washing water from the rim water channel 16 in a state to flow washing water from the rim water channel 16 while keeping washing water in constant flow substantially. Then, after the jet of the jet water is stopped, the flowout of washing water from the rim water channel 16 is stopped.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cleaning a siphon jet type toilet bowl.

[0002]

2. Description of the Related Art As a method of cleaning a siphon jet toilet, cleaning water is caused to flow out from the rim water passage provided along the upper edge of the toilet bowl along the inner surface of the toilet bowl. A method of jetting jet water from a jet hole toward a drain trap portion of a toilet is widely used.

Here, jetting of jet water from the jet hole is for causing a siphon action, and the water jetted from the jet hole quickly fills the drain trap portion. Along with this, a siphon action occurs and the wastewater inside the toilet bowl is drawn into the drain trap section, and the wastewater is efficiently discharged.

When cleaning the siphon jet toilet after use, it has been conventionally practiced to start the flush water outflow from the rim water passage and the jet water jet at the same time. Since the siphon action is further induced, there is a disadvantage that the upper part of the toilet bowl is not sufficiently washed. Since the siphon action occurs at an early stage, the water level of the accumulated water in the toilet bowl does not rise despite the washing water flowing out from the rim water passage, and the upper portion of the toilet bowl is not sufficiently cleaned.

Therefore, in the case of this cleaning method, since the cleaning efficiency is insufficient, a large amount of cleaning water is required for one cleaning, and in the case of the toilet using the cleaning water tank, the cleaning water tank becomes large. It causes inconvenience.

On the other hand, tap water is supplied to both the rim water passage and the jet hole by direct pressure (water supply pressure), and first, the tap water is supplied to the rim water passage to discharge the wash water from the rim water passage. After performing this for a certain period of time, water supply to the rim water passage and wash water outflow from the rim water passage are temporarily stopped, water supply to the jet hole, jet water jet from the jet hole are performed for a certain time, and In addition to or after stopping this, a method has been proposed in which water is supplied to the rim water passage and flush water is again discharged from the rim water passage to seal water (JP-A-3-176523).

However, in the case of this cleaning method, since water supply to the rim water passage, washing water outflow from the rim water passage, and stop are repeated a plurality of times during one cleaning, the rim water passage is appropriately timed. There is a problem that a mechanism for starting and stopping the outflow of cleaning water is required and becomes complicated.

In the case of this cleaning method, in order to secure the water pressure from the rim water passage or the jet hole, tap water is selectively switched between the water supply to the rim water passage and the water supply to the jet hole. However, in this case, there is a problem that water is not substantially flown out or ejected from either the rim water passage or the jet hole, and the momentum to wash the toilet bowl is not sufficient.

[0009]

The invention of the present application has been made to solve such a problem. Thus, the invention of the present application is such that washing water is made to flow along the inner surface of the toilet bowl from the rim water passage provided along the upper edge of the toilet bowl, and siphon action is made from the jet hole opened toward the drain trap of the toilet bowl. In the method of cleaning a siphon jet type toilet bowl for ejecting jet water for cleaning the flush water from the rim water passage while letting the wash water flow out from the rim water passage and maintaining the flow rate of the wash water at a substantially constant flow rate. The jet water is jetted from the jet hole at a timing delayed by a predetermined time from the start of washing water outflow, and then the jetting of the wash water from the rim water passage is stopped after a predetermined time after the jet water jetting is stopped. It is characterized (Claim 1).

According to another invention of the present application, in claim 1, water is supplied to the rim water passage from a flush water tank provided on an upper rear portion of the toilet, while tap water is directly supplied to the jet hole and the rim water passage is provided. It is characterized in that it is carried out through a jet water supply passage which is provided separately from the water supply passage to the above (Claim 2).

[0011]

As described above, according to the invention of claim 1, the flush water is continuously discharged from the rim water passage while being kept at a substantially constant flow rate, and in the meantime, specifically, the rim. This is to start jetting of jet water at a timing delayed from the start of washing water outflow from the water passage and to stop jetting of jet water a predetermined time before stopping the outflow of washing water from the rim water passage. According to the invention, the toilet bowl can be efficiently cleaned, water can be saved, and the toilet water tank using the toilet water tank can be downsized and made compact.

In the cleaning method of the present invention, the cleaning water flows out from the rim water passage for a certain period of time before jetting of jet water, so that the water level on the reservoir surface inside the toilet bowl is sufficiently high during that time. As a result, the upper part of the toilet bowl is washed well and dirt is removed. Then, when sufficient water is accumulated in the toilet bowl, jet water jetting causes a siphon action, and a large amount of accumulated water is discharged together with filth. After the siphon action, the flush water is satisfactorily sealed by continuing the outflow of the wash water from the rim water passage.

As described above, according to the present invention, the cleaning efficiency at the time of cleaning the toilet bowl is improved. Therefore, in a toilet bowl using a wash water tank, the tank can be downsized, and the start and stop of the wash water outflow from the rim water passage is not repeated during one wash, so the wash from the rim water passage is not repeated. The mechanism for water outflow can be simplified.

Further, in the present invention, a large amount of water can be supplied to the toilet bowl at one time so that the flush water can be discharged and jetted from both the rim water passage and the jet hole all at once, so that the dirt can be swiftly and rapidly washed. It can be washed and drained.

Next, in the second aspect of the present invention, water is supplied to the rim water passage from a wash water tank provided on the upper rear side of the toilet bowl.
Since tap water is directly supplied to the jet holes, according to the present invention, the disadvantage that the water force from the rim water passage and the jet holes becomes weak does not occur, and cleaning is performed simultaneously and with sufficient force from both. Water outflow and jet water ejection can be performed.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described in detail with reference to the drawings. In FIG. 2, reference numeral 10 denotes an S-trap type siphon jet toilet having a rim 14 provided along the upper peripheral edge of the toilet bowl 12, and a rim water passage 16 is formed inside the rim 14. There is. A large number of water spray holes 18 are formed along the rim water passage 16 at the bottom of the rim 14 so as to communicate with the rim water passage 16 so that the water in the rim water passage 16 flows out along the inner surface of the toilet bowl 12. ing.

At the bottom of the toilet bowl 10, a drain trap portion 20 having a substantially S-shape as a whole is provided. The trap portion 20 includes a first water channel 24 that extends rearward and obliquely upward following the bottom opening 22 of the toilet bowl 12, a second water channel 26 that rises from the upper end of the first water channel 24, and a toilet center from the lower end of the second water channel 26. The third water channel 28 that extends horizontally to the discharge port 30
It has and.

In the vicinity of the entrance of the trap portion 20, that is, in the vicinity of the bottom opening 22 of the toilet bowl 12, there is provided a jet hole 32 opening toward the inside of the trap portion 20.

A wash water tank 34 is provided on the upper rear side of the toilet bowl 10.
Is provided. A water outlet 36 is provided at the bottom of the wash water tank 34, and the water outlet 36 is opened and closed by a ball-shaped drain valve 38. Here the drain valve 38 is connected to a lever 42 via a chain 40,
The drain valve 38 is lifted by rotating the lever 42.

A water pipe 44 projects into the interior of the wash water tank 34. The water pipe 44 is bifurcated inside the wash water tank 34, and each has a solenoid valve 4
6, 48 are provided. These solenoid valves 46 and 48 are electrically connected to a control device 50 that controls the operation thereof. The lever 42 is provided with a switch (not shown) for detecting its rotation, and the switch is electrically connected to the control device 50.

One of the branch pipes opens toward the inside of the wash water tank 34, and the opening serves as a water outlet 52. The other branch pipe is connected to a jet water supply pipe (jet water supply passage) 54 via an electromagnetic valve 46, and the tip of the jet water supply pipe 54 is connected to the jet hole 32.

Below the wash water tank 34, a water chamber 56 for receiving the falling water from the wash water tank 34 is formed. The water chamber 56 is connected to the rim water passage 16.

The control device 50 operates the solenoid valves 46 and 48 so that the flush water flows out from the rim water passage 16 and the jet water flows out from the jet holes 32 at a predetermined timing after the toilet 10 is used. Control.

FIG. 1 shows the timing of starting and stopping the outflow of washing water from the rim water passage 16 and jetting and stopping jet water from the jet holes 32.

As shown in the figure, in this embodiment, after the toilet 10 has been used, the lever 42 is pivotally operated so that the cleaning water in the cleaning water tank 34 is first guided to the rim water passage 16 and the rim. From the large number of water spray holes 18 provided along the water passage 16, the water is vigorously discharged along the inner surface of the toilet bowl 12. As a result, the dirt on the inner surface of the toilet bowl 12 is washed away.

The outflow of wash water from the rim water passage 16 is continued until the inside of the wash water tank 34 is almost empty, and during that time, the water is supplied to the inner surface of the toilet bowl 12 through the water outlet 36 and the rim water passage 16. The lane is kept fully open. That is, during this period, the maximum amount of cleaning water is continuously supplied to the inner surface of the toilet bowl 12. At this time, the amount of washing water from the rim water passage 16 to the inner surface of the toilet bowl 12 is maintained at a substantially constant flow rate.

When the inside of the flush water tank 34 becomes almost empty, the drain port 36 is closed by the drain valve 38, and the flush water outflow from the rim water passage 16 to the inner surface of the toilet bowl 12 is stopped here.

In this example, after a lapse of a predetermined time (for example, about 3 seconds) from the start of the flush water outflow from the rim water passage 16, the water supply to the jet holes 32 is started and the jet water is jetted from the jet holes 32. To be done. As a result, the inside of the trap portion 20 is quickly filled with water to induce the siphon action, and the accumulated water 58 inside the toilet bowl 12 is discharged to the outside all together with the waste.

After the jet water is jetted for a predetermined time, the water supply to the jet holes 32, that is, jetting of the jet water is stopped. Then, after a further predetermined time has elapsed, the outflow of washing water from the rim water passage 16 is stopped. In other words, in the present example, the jet water jet from the jet hole 32 is performed while the wash water outflow from the rim water passage 16 continues, that is, before a predetermined time when the wash water outflow from the rim water passage 16 is stopped. Be stopped.

The time between the timing T _{3 at} which the jet water jetting stops and the timing T _{4 at} which the flush water outflow from the rim water passage 16 stops is, for example, about 3 seconds. Here, the outflow of cleaning water between T ₃ and T ₄ has the meaning of supplying water to the trap portion 20 to seal it.

According to the cleaning method of this example, the cleaning water flows out from the rim water passage 16 for a certain period of time before jetting of jet water, so that the water level of the accumulated water 58 in the toilet bowl 12 is during that time. Is sufficiently high, whereby the upper part of the toilet bowl 12 is washed well and dirt is removed. And toilet bowl 1
When the water is sufficiently accumulated in 2, the jet water is ejected to induce the siphon action, and a large amount of the accumulated water 58 is discharged together with the dirt.

According to the method of this embodiment, the toilet bowl can be efficiently washed, and therefore, the capacity of the wash water tank 34 can be reduced and the wash water tank 34 can be downsized.
Further, since the start and stop of the outflow of the wash water from the rim water passage 16 are not repeated during one wash, the mechanism for the wash water outflow from the rim water passage 16 can be configured with the above-described simple structure. .

Further, in this embodiment, since the flush water is made to flow out and jet from both the rim water passage 16 and the jet hole 32 at once, a large amount of water can be supplied to the toilet 10 at a time, and the filth is expelled at once. it can.

Further, in this embodiment, the cleaning water is supplied from the cleaning water tank 34 to the rim water passage 16 and the tap water is supplied to the jet holes 32 at a direct pressure. Also, from any of them, the flush water can flow out and jet water can be jetted with sufficient force, and the toilet bowl can be efficiently washed.

The controller 50 controls the flush water tank 3 from the water outlet 52 when the water supply to the jet hole 32 is stopped.
The operation of the solenoid valves 46 and 48 is switched so as to supply tap water into the inside of the valve 4.

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 solenoid valve 4
Although the jet water is jetted out from the jet hole 32 at a predetermined timing by electrically controlling the operation of 6, 6 and 48 by the control device 50, the jet water is constantly discharged after the flush water starts to flow out from the rim water passage 16. At a timing delayed, that is, when the water level in the wash water tank 34 drops by a certain amount, tap water from the water pipe 44 is jetted into the jet hole 32.
It is also possible to provide a mechanical switching valve for switching to the above.

Furthermore, the present invention can be applied to various forms other than the above examples, such as siphon jet toilets, and can be carried out in variously modified forms without departing from the spirit of the invention.

[Brief description of drawings]

FIG. 1 is a diagram showing a relationship between a flush water outflow timing from a rim water passage and a jet water ejection timing from a jet hole in a method according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a siphon jet type toilet bowl to which the present invention is applied.

[Explanation of symbols]

 10 Siphon jet type toilet bowl 12 Toilet bowl 16 Rim water passage 18 Water injection hole 20 Drain trap part 32 Jet hole 34 Wash water tank 44 Water pipe 54 Jet water supply pipe 56 Water room

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takeshi Yomota 5-1-1, Koiehoncho, Tokoname City, Aichi Prefecture Inax Co., Ltd.

Claims (2)

[Claims] 1. A washing water is made to flow along the inner surface of the toilet bowl from a rim water passage provided along the upper edge of the toilet bowl, and a siphon action is provided from a jet hole opened toward the drain trap portion of the toilet bowl. In a method for cleaning a siphon jet type toilet bowl that ejects jet water, the flush water starts to flow out from the rim water passage while letting the wash water flow out from the rim water passage and maintaining the flow rate of the wash water at a substantially constant flow rate. A siphon characterized in that jet water is jetted from the jet hole at a timing delayed by a predetermined time, and after that, jet water is stopped from jetting water from the rim water passage after a predetermined time. How to clean a jet toilet. 2. The rim water passage according to claim 1, wherein water is supplied to the rim water passage from a flush water tank provided on a rear upper side of the toilet, while tap water is directly supplied to the rim water passage. Is a cleaning method for siphon jet toilets, which is performed through a separately provided jet water supply channel.