JP4052085B2 - Toilet bowl cleaning device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a toilet bowl cleaning apparatus that supplies cleaning water to a western style toilet bowl, and more particularly to a toilet bowl cleaning apparatus that is employed when the western style toilet bowl is a siphon jet type western style toilet bowl. More specifically, the present invention relates to an improvement in a toilet cleaning device that supplies cleaning water to a Western-style toilet using tap water pressure 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 are of a low tank type in which a low tank is installed on the upper surface of the rear part of the toilet body and water in the low tank is supplied to a rim or the like.
[0003]
This low tank type Western-style toilet is traveling backwards by the amount of the low tank, and in recent years, Western-style toilets that have significantly reduced the rear protrusion of the Western-style toilet by eliminating the low tank and supplying cleaning water with tap water pressure have been rapidly developed. It is becoming popular. In this toilet flushing device using tap water pressure, a siphon jet cleaning system that forms a siphon discharge water flow by ejecting water from the jet hole to the trap of the toilet bowl in order to powerfully discharge dirt and paper from the toilet bowl. The method is adopted.
[0004]
By the way, when water is supplied to the toilet bowl by tap water pressure, the wash water cannot be supplied to the toilet bowl by a sufficient water force if the tap water pressure is low. As a countermeasure, JP-A-7-300891 discloses that a pressure accumulator is provided in the middle of a water pipe.
[0005]
[Patent Document 1]
JP-A-7-300891 [0006]
[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 the entire amount of washing water supplied to the Western-style toilet using an accumulator. Become a large volume.
[0007]
An object of this invention is to provide the toilet bowl washing | cleaning apparatus which had sufficient discharge | emission capability even if it used the small pressure accumulator.
[0008]
[Means for Solving the Problems]
The toilet bowl cleaning device of the present invention (Claim 1) has a rim water supply means for supplying water to the rim of the toilet bowl, and a jet water supply means for supplying water to the jet hole facing the trap portion, and the rim water supply means is a water pipe. In the toilet flushing apparatus that supplies water to the rim by tap water pressure from the water supply, the jet water supply means can supply the accumulated water accumulated in the pressure accumulator to the jet holes , and the jet water supply means A first flow path that communicates piping and the jet hole and does not have a pressure accumulator; and a second flow path that communicates water pipe and the jet hole and has the pressure accumulator. When cleaning, first, water is supplied to the rim for a predetermined time by the rim water supply means, then water is supplied to the jet holes for a required time by the first flow path of the jet water supply means, and water is supplied to the jet holes by this first flow path. Some It is configured to supply pressure-accumulated water to the jet holes by two flow paths, and after a predetermined time has elapsed since the start of water supply to the jet holes by the first flow paths, It is characterized by starting water supply .
The toilet bowl cleaning device of the present invention (Claim 4) has a rim water supply means for supplying water to the rim of the toilet bowl, and a jet water supply means for supplying water to the jet holes facing the trap part, and the rim water supply means is a water pipe. In the toilet flushing apparatus that supplies water to the rim by tap water pressure from the water supply, the jet water supply means can supply the accumulated water accumulated in the pressure accumulator to the jet holes, and the jet water supply means A main flow path communicating with the pipe and the jet hole, and a pressure accumulator connected to the main flow path via a connection flow path, and at the time of toilet flushing, water is first supplied to the rim by a rim water supply means for a predetermined time. Then, the jet water is supplied to the jet hole by the main flow path of the jet water supply means for a required time, and the jet flow is supplied to the jet hole by the main flow path by the connection flow path and the main flow path. The accumulated pressure water is supplied to the jet hole by the main flow path, and after a predetermined time has passed since the main flow path, It is characterized by starting water supply.
[0009]
In the toilet cleaning device of the present invention, only the water (preferably a part of this water) ejected from the jet hole is accumulated by the accumulator, and the water from the rim does not accumulate, so the volume of the accumulator is small. Small enough.
[0010]
In the present invention, the water supplied to the jet holes, by a water water part was accumulated by accumulator, the volume of the accumulator is so sufficient further reduced. In this case, when flushing the toilet bowl, water is first flowed through the rim for a predetermined time to wash away the bowl surface deposits, and then water is ejected from the jet holes to form a siphon discharge water flow at the trap portion.
[0011]
When water is ejected from the jet hole, first, unaccumulated water is flowed to form a relatively gentle siphon discharge water flow to discharge sedimentary filth that is relatively easy to discharge, and then the accumulated water is discharged from the jet hole. the by ejecting enhance siphon discharge water flow, to discharge a relatively discharged hard floating substances paper or the like. Thereby, even if the required amount of accumulated water is further reduced, filth and paper can be sufficiently discharged from the toilet bowl.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1A is a perspective view of a Western-style toilet equipment equipped with a toilet cleaning device according to the embodiment, FIG. 1B is a configuration diagram of the electric valve unit, and FIG. 2A is a cleaning water supply flow path. A system diagram and FIG. 2B are water supply timing charts of the cleaning water supply flow path.
[0013]
The pottery-made western style toilet 1 includes a bowl portion 2 at the front, and a rim 3 is provided on the upper inner periphery of the bowl portion 2. Wash water is supplied to the rim 3 through the rim nozzle 4. In addition, the trap portion of the bowl portion 2 is provided with a jet nozzle 5 that ejects water (jet water) for inducing a siphon discharge flow into the trap portion. This trap part has a rising part that rises obliquely upward from the bottom of the pot part 2 and a rising part that continues to the rising part and falls downward, and this rising part is connected to a drain pipe (not shown). ing. This trap structure itself is well known.
[0014]
The end of the water supply pipe protrudes from the wall surface of the toilet room, and a stop cock 10 is attached to the end of the water supply pipe. This stop cock 10 is connected to a strainer 12 installed at the rear part of the Western-style toilet 1 via a water supply hose 11. The water that has passed through the strainer 12 can be supplied to the motor-operated valve unit 20 and can be supplied to a hot water tank (not shown) of the hot water cleaning device of the human body via the pipe 13 branched from the strainer 12. Yes.
[0015]
The electric valve unit 20 drives the valve devices 22 and 23 disposed therein by a motor 21 to supply water to the rim nozzle water supply pipe 24 or the jet nozzle water supply pipe 25. Note that a manual washing 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 electric valve unit 20 is arranged in a cover casing (not shown).
[0016]
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 negative pressure is generated in the water supply pipe 24 or 25 and to communicate the inside of the water supply pipe 24 or 25 with the atmosphere. When supplying cleaning water to the Western-style toilet 1 after a stool (stool), first, the valve 22 is opened for a predetermined time, and the cleaning water is supplied to the rim 3 so that the dirt adhering to the bowl surface is washed off to the trap portion. Next, the valve 23 is opened for a predetermined time, water is ejected from the jet nozzle 5, a siphon is induced in the trap portion, and sewage is discharged to the drain pipe. Thereafter, the valve 22 is opened again for the required time, and trap water is stored.
[0017]
As shown in FIG. 2, the jet nozzle water supply pipe 25 branches into a first flow path 31 and a second flow path 32, and joins at the pipe 51. The first flow path 31 supplies water to the jet nozzle 5 through the first on-off valve 41, the pressure reducing valve 50 and the pipe 51. The second flow path 32 supplies water from the pipe 51 to the jet nozzle 5 via the second on-off valve 42 and the third on-off valve 43.
[0018]
The second flow path 32 between the second open / close valve 42 and the third open / close valve 43 communicates with the pressure accumulator 61 via the connection pipe 60. The pressure accumulator 61 has a known structure in which a pressure-resistant outer shell container is partitioned into an air pressure accumulating chamber and a water accumulating chamber by a stretchable elastic diaphragm. When water is supplied from the electric valve unit 20 to the pipe 25 with the first on-off valve 41 and the third on-off valve 43 closed and the second on-off valve 42 opened, water is supplied into the accumulator 61 by tap water pressure. The water gradually flows in and water having a pressure equal to the tap water pressure (static pressure) is stored in the pressure accumulator 61. When the third on-off valve 43 is opened, the accumulated water in the accumulator 61 is supplied to the jet nozzle 5.
[0019]
The electric valve unit 20 and the on-off valves 41, 42, 43 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 this controller, and the motor-operated valve unit 20 and the on-off valves 41, 42, 43 are operated based on these signals. The
[0020]
In the toilet bowl cleaning device configured as described above, when the cleaning water is not supplied to either the rim nozzle 4 or the jet nozzle 5, the on-off valves 41 and 43 are closed and the on-off valve 42 is opened while the on-off valve 42 is open. 20 supplies water to the jet nozzle water supply pipe 25 for a predetermined time and causes the pressure accumulator 61 to store the water. The tap water pressure from the water pipe becomes a considerably low value due to a large amount of water discharge when the water pipe is thin. However, since water flows into the pressure accumulator 61 little by little, water can be stored in the pressure accumulator 61 at a water pressure substantially equal to the water supply source pressure. In this embodiment, sufficient discharge capacity can be obtained even if the water supply source pressure is about ² to 3 kg / cm ² .
[0021]
When the toilet bowl cleaning is started, the motor-operated valve unit 20 first supplies water to the rim nozzle 4 for a predetermined time as shown in FIG. 2 (b) to wash away dirt adhering to the bowl surface of the toilet bowl. At this time, all of the first to third on-off valves 41, 42, 43 are closed, water is supplied only to the rim nozzle 4, and water is not supplied to the jet nozzle 5.
[0022]
After stopping the water supply to the rim nozzle 4, only the first on-off valve 41 is opened, and the water is supplied to the jet nozzle 5 by the direct pressure of the tap water pressure only through the first flow path 31. Water is spouted out by water, a relatively gentle siphon is induced in the trap portion, and filth that is easily discharged, such as sedimentary solids, is discharged from the trap portion to the drain pipe together with water.
[0023]
When a predetermined time t elapses after the first on-off valve 41 is opened, the second and third on-off valves 42 and 43 are opened, and the accumulated water in the accumulator 61 is also supplied to the jet nozzle 5. As a result, the amount of water jetted from the jet nozzle 5 and the water pressure increase, and a strong siphon discharge water flow is formed in the trap portion. As a result, solids that are difficult to flow, such as paper floating on or near the water surface in the bowl, are also quickly discharged.
[0024]
In addition, when discharging the accumulated water in the pressure accumulator 61, the second on-off valve 42 may be closed and only the third on-off valve 43 may be opened.
[0025]
Thereafter, the first to third on-off valves 41 to 43 are closed, and the water supply to the jet nozzle water supply pipe 25 by the electric valve unit 20 is stopped. Thereafter, the motor-operated valve unit 20 supplies water to the rim nozzle 4 for a predetermined time, and stores a required amount of trap water at the bottom of the toilet bowl. Further, although not shown in FIG. 2B, the motor-operated valve unit 20 supplies water to the jet nozzle water supply pipe 25 with only the second on-off valve 42 opened, and stores the accumulated water in the accumulator 61. Let
[0026]
As described above, according to this embodiment, the accumulated water of the pressure accumulator 61 is supplied to the jet nozzle 5 so that a strong siphon discharge flow can be formed, and paper that is difficult to flow is reliably discharged. Is possible.
[0027]
In this embodiment, at the initial stage of siphon discharge, water is ejected from the jet nozzle 5 only by water supply-type water supply to discharge easy-flowing sedimentary solids. Since it is made to discharge | emit by a flow, the amount of the pressure accumulation water supplied from the pressure accumulator 61 needs to be small, and the pressure accumulator 61 comes to have a small volume.
[0028]
The length of the delay time t is preferably selected according to the volume of the pressure accumulator 61.
[0029]
The second on-off valve 42 in this embodiment may be a check valve.
[0030]
In the present invention, any one of the on-off valves 41 to 43 (preferably the on-off valves 42 and 43) and the pressure accumulator 61 may be installed on a common installation member to form a unit. Installation work can be simplified. Other devices may be appropriately unitized.
[0031]
In the above embodiment, the jet nozzle water supply pipe 25 is branched into the first flow path 31 and the second flow path 32, but the main pipe 25A for jet nozzle water supply is connected to the jet nozzle 5 as shown in FIG. The pressure accumulator 61 may be connected via the connection pipe 60 in the middle thereof. The main pipe 25A is provided with a check valve 70, a pressure reducing valve 50, and a downstream opening / closing valve 71 sequentially from the upstream side, and the connection pipe 60 is provided between the pressure reducing valve 50 and the downstream opening / closing valve 71. It is connected. A pressure accumulation water opening / closing valve 72 is provided in the connecting pipe 60, and the discharge timing of the pressure accumulation water from the pressure accumulator 61 is controlled to be the same as in the above embodiment. Instead of the check valve 70, an on-off valve (upstream side on-off valve) may be provided. These on-off valves are controlled to open and close by a controller.
[0032]
The pressure accumulator 61 may be disposed inside the western-style toilet (for example, inside the pedestal) or may be disposed outside the western-style toilet.
[0033]
【The invention's effect】
As described above, according to the present invention, a strong siphon discharge flow can be formed using a pressure accumulator when a siphon jet western-style toilet is washed with tap water pressure. Further, according to the present invention, it is possible to reduce the volume of the pressure accumulator.
[Brief description of the drawings]
FIG. 1A is a perspective view of a Western-style toilet facility equipped with a toilet cleaning device according to an embodiment, and FIG. 1B is a configuration diagram of the motor-operated valve unit.
2A is a system diagram of a cleaning water supply channel, and FIG. 2B is a water supply timing chart of the cleaning water supply channel.
FIG. 3 is a wash water flow diagram of a toilet bowl cleaning device according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Western style toilet 2 Bowl part 3 Rim 4 Rim nozzle 5 Jet nozzle 6 Toilet 7 Toilet lid 8 Toilet box 10 Stop cock 11 Water supply hose 12 Strainer 20 Electric valve unit 31 1st flow path 32 2nd flow path 41 1st on-off valve 42 Second on-off valve 43 Third on-off valve 61 Accumulator 70 Check valve 71 Downstream on-off valve 72 Accumulated water on-off valve

Claims (6)

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 holes facing the trap part,
In the toilet cleaning device, the rim water supply means supplies water to the rim by tap water pressure from a water pipe.
The jet water supply means is capable of supplying the accumulated water accumulated in the accumulator to the jet hole ,
The jet water supply means
A first flow path that communicates the water pipe with the jet hole and has no pressure accumulator;
A second flow path having the pressure accumulator communicating with the water pipe and the jet hole;
Have
When cleaning the toilet bowl,
First, water is supplied to the rim for a predetermined time by the rim water supply means,
Next, water is supplied to the jet holes for the required time by the first flow path of the jet water supply means, and the accumulated water is supplied to the jet holes by the second flow path in a part of the time zone in which the water is supplied to the jet holes by the first flow path. Configured to supply,
A toilet cleaning device , wherein water supply to a jet hole by the second flow path is started after a predetermined time has elapsed since water supply to the jet hole is started by the first flow path . The jet water supply means according to claim 1 ,
A first on-off valve provided in the first flow path;
A second on-off valve provided upstream of the pressure accumulator of the second flow path;
A third on-off valve provided downstream of the pressure accumulator of the second flow path;
A controller for controlling opening and closing of the first, second and third on-off valves;
A toilet bowl cleaning device comprising: The jet water supply means according to claim 1 ,
An on-off valve provided in the first flow path;
A check valve provided upstream of the pressure accumulator of the second flow path;
A third on-off valve provided downstream of the pressure accumulator of the second flow path;
A controller for controlling opening and closing of the opening and closing valves of the first channel and the second channel;
A toilet bowl cleaning device comprising: 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 holes facing the trap part,
In the toilet cleaning device, the rim water supply means supplies water to the rim by tap water pressure from a water pipe.
The jet water supply means is capable of supplying the accumulated water accumulated in the accumulator to the jet hole,
The jet water supply means
A main flow path communicating with the water pipe and the jet hole;
And possess a connected accumulator via a connecting channel to the main channel,
When cleaning the toilet bowl,
First, water is supplied to the rim for a predetermined time by the rim water supply means,
Next, water is supplied to the jet hole by the main flow path of the jet water supply means for a required time, and is stored in the jet hole by the connection flow path and the main flow path in a part of the time zone in which the water is supplied to the jet hole by the main flow path. Is configured to supply
A toilet flushing device characterized in that after a predetermined time has elapsed since the start of water supply to the jet holes by the main flow path, water supply to the jet holes of the accumulated water by the connection flow path and the main flow path is started. . In claim 4 ,
A check valve is provided in the main flow path;
A downstream opening / closing valve is provided downstream of the check valve,
The connection flow path is connected to the main flow path between the check valve and the downstream on-off valve,
An accumulating water on-off valve is provided in the connection flow path,
A toilet cleaning device, characterized in that a controller for controlling the opening and closing of the downstream opening and closing valve and the pressure accumulating water opening and closing valve is provided. In claim 4 ,
An upstream on-off valve is provided in the main flow path;
A downstream on-off valve is provided downstream from the upstream on-off valve;
The connection flow path is connected to the main flow path between the upstream opening / closing valve and the downstream opening / closing valve,
An accumulating water on-off valve is provided in the connection flow path,
A toilet cleaning device, comprising a controller for controlling the opening and closing of the upstream opening and closing valve, the downstream opening and closing valve, and the pressure accumulating water opening and closing valve.

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