JP2004251020A - Toilet bowl flushing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet bowl flushing device which carries out strong rim flushing by means of an accumulator, wherein the volume of the accumulator is reduced. <P>SOLUTION: According to the toilet bowl flushing device, washing water is supplied to a rim 3 via a rim nozzle 4, and a jet nozzle 5 is arranged in a trap portion. When the device is in a non-flushing state where no washing water is supplied to the rim nozzle 4 or the jet nozzle 5, a valve 33 is closed and a valve 31 is opened, and therefore water is accumulated in the accumulator 32. In a flushing state, water supply is started to the rim nozzle 4 by using service water pressure, and almost simultaneously with the start of the water supply, accumulated water in the accumulator 32 is supplied to the rim nozzle 4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a toilet flushing device for supplying flush water to a Western toilet, and more particularly to a toilet flushing device employed when the Western toilet is a siphon jet type Western toilet. More specifically, the present invention relates to an improvement in a toilet flushing device that supplies flush water to a Western-style toilet by the pressure of tap water without installing a tank such as a low tank or a high tank.
[0002]
[Prior art]
Many Western style toilets that have been used in the past have a low tank installed on a rear upper surface of a toilet body and supply the water in the low tank to a rim or the like.
[0003]
This low-tank type Western style toilet has a business that travels rearward by the amount of the low tank.In recent years, the Western style toilet that has omitted the low tank and supplied flushing water with tap water pressure to significantly reduce the rear projection of the Western style toilet has rapidly increased. Spreading. In this toilet flushing device using tap water pressure, a siphon jet type flushing system that forms a siphon discharge water flow by ejecting water from a jet hole into the trap portion of the toilet bowl in order to strongly discharge dirt and paper from the toilet bowl. The method is adopted.
[0004]
By the way, when water is supplied to the toilet with tap water pressure, if the tap water pressure is low, the flush water cannot be supplied to the toilet with sufficient water pressure. As a countermeasure against this, it is described in Japanese Patent Application Laid-Open No. Hei 7-300891 that a pressure accumulator is provided in the middle of a water pipe.
[0005]
[Patent Document 1]
JP-A-7-300891
[Problems to be solved by the invention]
In the Western-style toilet equipment disclosed in JP-A-7-300891, the Western-style toilet is a blow-out type Western-style toilet, and it is necessary to accumulate all the washing water supplied to the Western-style toilet by an accumulator. Large volume.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide a toilet bowl cleaning device having a sufficient pot surface cleaning ability even when a small pressure accumulator is used.
[0008]
[Means for Solving the Problems]
The toilet flushing device of the present invention has rim water supply means for supplying water to a rim of a toilet bowl, and jet water supply means for supplying water to a jet hole facing a trap portion, and the rim water supply means is provided by tap water pressure from a water supply pipe. A toilet flushing device capable of supplying water to a rim, characterized in that the device is provided with a pressure-accumulated water supply means for supplying pressure-accumulated water accumulated by an accumulator as a part of water supply to the rim.
[0009]
Such a toilet flushing device of the present invention accumulates only a part of the water supplied to the rim by the pressure accumulator, so that the volume of the pressure accumulator is small.
[0010]
In the present invention, the accumulated water supply means may be operated prior to the supply of water to the rim by the tap water pressure. In this case, as described later, the dirt on the pot surface can be thoroughly washed away.
[0011]
Further, the accumulated water supply means may be operated simultaneously with the supply of water to the rim by the tap water pressure, so that the pot surface can be strongly washed as described later.
[0012]
Further, the accumulated water supply means may be operated after the supply of water to the rim by tap water pressure, so that the pot surface cleaning can be performed extremely strongly as described later. In this case, the stop of the supply of the accumulated water, the stop of the rim supply by the tap water pressure, and the start of the jet supply may be substantially simultaneous. In this way, as will be described later, the discharged water flow from the pot can be made strong.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1A is a perspective view of a Western-style toilet equipped with a toilet cleaning device according to an embodiment, FIG. 1B is a configuration diagram of an electric valve unit and a stored-pressure water supply mechanism, and FIG. 2 is a perspective view of a Western-style toilet FIG. 3 and FIG. 3 are water supply timing charts of the cleaning water supply passage.
[0014]
The Western-style urinal 1 made of earthenware is provided with a pot portion 2 at the front portion, and a rim 3 is provided on the inner periphery of the upper portion of the pot portion 2. Wash water is supplied to the rim 3 via a rim nozzle 4. The rim nozzle 4 is arranged only on the left side when facing the front of the Western-style toilet 1, and is a so-called "one-sided water supply system". By supplying water from the rim nozzle 4 to the rim 3, a swirling flow is formed on the bowl surface.
[0015]
The trap portion of the bowl portion 2 is provided with a jet nozzle 5 for jetting water (jet water) for inducing a siphon discharge flow into the trap portion. The trap portion has a rising portion that rises obliquely upward from the bottom of the bowl portion 2 and a rising portion that is continuous with the rising portion and that falls downward. The rising portion is connected to a drain pipe (not shown). ing. This trap structure itself is well known.
[0016]
A toilet seat box 6 is provided on the rear upper surface of the Western-style toilet 1. The rear portion of the toilet seat box 6 projects slightly rearward from the Western-style toilet bowl 1, and an under case 7 is connected to the lower side. The toilet seat 8 and the toilet lid 9 are supported by the toilet seat box 6 so that the toilet seat 8 and the toilet lid 9 can be turned upside down.
[0017]
The end of the water supply pipe protrudes from the wall surface of the toilet room, and a water stopcock 10 is attached to the end of the water supply pipe. The water stopcock 10 is connected via a water supply hose 11 to a strainer 12 installed at the rear of the Western-style toilet 1. The water that has passed through the strainer 12 can be supplied to the electric valve unit 20 and can be supplied to the pressure accumulator 32 via a pipe 30 and a valve 31 branched from the secondary side of the strainer 12.
[0018]
The motor-operated valve unit 20 supplies water to the rim nozzle water supply pipe 24 or the jet nozzle water supply pipe 25 by driving the valve devices 22 and 23 disposed inside by the motor 21. The accumulated water in the accumulator 32 can be discharged to the rim nozzle water supply pipe 24 via the valve 33 and the pipe 34.
[0019]
A manual cleaning handle 28 is attached to the rotating shaft of the motor 21 so that the toilet can be used even during a power failure. The motor-operated valve unit 20 and the accumulator 32 are arranged from the toilet seat box 6 to the inside of the under case 7.
[0020]
The electric valve unit 20 is provided with vacuum breakers 26 and 27 for breaking the negative pressure in the rim nozzle water supply pipe 24 and the jet nozzle water supply pipe 25. The vacuum breakers 26 and 27 are configured to open when a negative pressure is generated in the water supply pipe 24 or 25 to communicate the inside of the water supply pipe 24 or 25 with the atmosphere.
[0021]
When cleaning water is supplied to the Western-style toilet 1 after the stool (stool), the valve 22 is opened for a predetermined time, the cleaning water is supplied to the rim 3 by tap water pressure, and the dirt attached to the pot surface is washed off to the trap portion. It is. In this embodiment, the valve 33 is opened before, at the same time as, or after the supply of the cleaning water to the rim 3 by the electric valve unit 20, and the accumulated water is supplied from the accumulator 32 to the pipe 24 and the rim nozzle. 4 to the rim 3.
[0022]
When a predetermined time has elapsed from the start of the supply of the accumulated water, the valve 33 is closed, and the valve 22 is closed. After or almost simultaneously with the closing of the valve 22, the valve 23 is opened for a predetermined time, water is jetted from the jet nozzle 5, a siphon is induced in the trap portion, and sewage is discharged to a drain pipe. Thereafter, the valve 23 closes, then the valve 22 opens again for a required time, and trap water is stored.
[0023]
After the valve 22 is closed, the valve 31 is opened for a required time, and water is stored in the accumulator 32.
[0024]
The pressure accumulator 32 has a known structure in which the inside of a pressure-resistant outer shell is partitioned into an air pressure accumulating chamber and a water accumulating chamber by an elastic elastic membrane. When the valve 31 is opened with the valve 33 closed, the water gradually flows into the accumulator 32 due to the tap water pressure, and water having a pressure equal to the tap water pressure (static pressure) is stored in the accumulator 32. In addition, the tap water pressure from the tap water pipe takes a considerably low value with a large amount of water discharge when the tap water pipe is thin. However, since water flows into the accumulator 32 little by little, water can be stored in the accumulator 32 at a water pressure substantially equal to the water supply source pressure. In this embodiment, the accumulated water can be sufficiently stored even when the water supply source pressure is about ² to 3 kg / cm ² . When the valve 31 is closed and the valve 33 is opened, the accumulated water in the accumulator 32 is supplied to the pipe 24.
[0025]
The motor-operated valve unit 20 and the valves 31, 33 are controlled by a controller (not shown). A detection signal of a user of the Western-style toilet 1 and a flash switch signal of a remote controller (not shown) are input to the controller, and the electric valve unit 20 and the valves 31 and 33 are operated based on these signals.
[0026]
In the pattern (1) of FIG. 3, the valve 33 is opened before the valve 22 is opened (for example, about 1 to 5 seconds), and the accumulated water is discharged. Then, the valve 22 is opened during the discharge period of the accumulated water, and rim water supply by tap water pressure is started. During the period of the rim water supply by the tap water pressure, the discharge of the accumulated pressure water is stopped, and thereafter, only the rim water supply by the tap water pressure is continued.
[0027]
According to the pattern (1), after the high-pressure accumulated water alone flows out to the rim 3, wets the inner surface and the pot surface of the rim 3, and forms a swirling water film on them, the rim water is supplied by tap water pressure. Starts. The rim water supply by the tap water pressure is gentle, but since the swirling water flow has already been formed on the inner surface and the pot surface of the rim 3, the rim water supply by the tap water pressure is smooth without almost attenuating the water force. And a relatively strong swirling flow is formed on the pot surface.
[0028]
According to this pattern 1, since a swirling flow is formed on the pot surface for a relatively long time, dirt on the pot surface can be thoroughly washed away.
[0029]
According to the pattern {circle around (2)} in FIG. 3, the water supply by the tap water pressure via the valve 22 and the accumulated water from the accumulator 32 are discharged from the rim nozzle 4 to the rim 3 substantially simultaneously (for example, within ± 1 second). Then, a large amount of water flows into the rim 3 vigorously, and a swirling flow having a predetermined amount of water is formed on the pot surface from the beginning. For this reason, even the dirt firmly adhered to the pot surface can be washed away as if scraped off.
[0030]
According to the method of pattern {circle around (3)} in FIG. 3, a gentle swirling flow due to tap water pressure via the valve 22 is first formed on the bowl surface. Then, paper and dirt slightly adhered to the pot surface are washed away. Thereafter, for example, after about 1 to 5 seconds have elapsed, the accumulated water flows at a stretch in such a state that the water film is formed on the inner surface and the pot surface of the rim 3 by the water supply by the tap water pressure. The flowing water flows into the pot surface with little attenuation and forms a high-speed swirling flow. For this reason, even if the dirt is firmly stuck to the pot surface, it can be sufficiently washed away.
[0031]
In the case of the pattern (3), the accumulated water rapidly flows into the pot surface, so that the water level in the pot surface rises temporarily. When the valve 22 is closed almost simultaneously with the closing of the valve 33 (for example, within ± 1 second) and the jet valve 23 is opened to start jetting from the jet nozzle 5, the water level which has increased The descending water flow that tends to pass through the trap by its own weight and the jet jet water flow are superimposed, and an extremely strong discharge water flow can be formed in the trap section.
[0032]
The above-described embodiment is an example of the present invention, and the present invention may be applied to modes other than those illustrated. For example, the valve 31 in the above embodiment may be a check valve. Further, the pressure accumulator 32 may be arranged in a Western-style toilet (for example, inside the pedestal portion), but it is preferable to arrange the accumulator 32 as high as possible in order to gain a water head.
[0033]
【The invention's effect】
As described above, according to the present invention, when cleaning a siphon jet type Western style toilet using tap water pressure, strong rim cleaning can be performed using a pressure accumulator. Further, according to the present invention, it is possible to reduce the volume of the accumulator.
[Brief description of the drawings]
FIG. 1 (a) is a perspective view of a Western-style toilet equipped with a toilet flushing device according to an embodiment, and FIG. 1 (b) is a configuration diagram of an electric valve unit thereof.
FIG. 2 is a perspective view of a Western-style toilet bowl.
FIG. 3 is a cleaning timing chart of the toilet bowl cleaning apparatus according to the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Western-style toilet 2 Pot part 3 Rim 4 Rim nozzle 5 Jet nozzle 6 Toilet seat box 7 Under cover 10 Water stopcock 11 Water supply hose 12 Strainer 20 Electric valve unit 32 Accumulator

Claims (5)

Rim water supply means for supplying water to the rim of the toilet bowl, and jet water supply means for supplying water to the jet hole facing the trap portion,
The rim water supply means is a toilet flushing device capable of supplying water to the rim by tap water pressure from a water pipe,
A toilet flushing device comprising a pressure-accumulated water supply means for supplying accumulated water accumulated in a pressure accumulator as a part of water supply to a rim. 2. The toilet flushing apparatus according to claim 1, wherein the accumulated water supply means is operated prior to the start of water supply to the rim by tap water pressure. 2. The toilet flushing apparatus according to claim 1, wherein the accumulated water supply means is operated simultaneously with the start of water supply to the rim by tap water pressure. 2. The toilet flushing apparatus according to claim 1, wherein the accumulated water supply means is operated after water supply to the rim is started by tap water pressure. 5. The toilet flushing apparatus according to claim 4, wherein the stop of the supply of the accumulated water, the stop of the rim supply by the tap water pressure, and the start of the jet supply are substantially simultaneous.

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