JP2004137857A

JP2004137857A - Toilet bowl washing device

Info

Publication number: JP2004137857A
Application number: JP2002305972A
Authority: JP
Inventors: Masaki Tomita; 冨田　勝紀; Takashi Yomoda; 四方田　毅史; Junichi Yamanaka; 山中　潤一
Original assignee: Inax Corp
Current assignee: Inax Corp
Priority date: 2002-10-21
Filing date: 2002-10-21
Publication date: 2004-05-13
Anticipated expiration: 2022-10-21
Also published as: JP4052085B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toilet bowl washing device which forms a strong siphon discharge current by using a pressure accumulator, and allows the pressure accumulator to be downsized. <P>SOLUTION: According to the toilet bowl washing device, wash water is supplied via a rim nozzle 4 to a rim 3, and a jet nozzle 5 is arranged in a trap portion of a toilet bowl. At the time of non-flushing, i.e. when wash water is not supplied to the rim nozzle 4 or the jet nozzle 5, on-off valves 41, 43 are closed and an on-off valve 42 is opened to store water in the pressure accumulator 61. At the time of flushing, water is supplied to the rim nozzle 4 for a predetermined period, and only the first on-off valve 41 is opened, followed by supplying water to the jet nozzle 5 only via a first channel 31 by using direct pressure of service water pressure. After a lapse of a predetermined time t, the second and third on-off valves 42, 43 are opened, and pressure water in the pressure accumulator 61 is supplied to the jet nozzle 5. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、洋風便器に洗浄水を供給する便器洗浄装置に係り、特に該洋風便器がサイホンジェット式洋風便器である場合に採用される便器洗浄装置に関する。さらに詳しくは、本発明は、ロータンクやハイタンクなどのタンクを設置せず、水道水の水圧によって洗浄水を洋風便器に供給する便器洗浄装置の改良に関する。
【０００２】
【従来の技術】
従来用いられてきた洋風便器は、便器本体の後部上面にロータンクを設置し、該ロータンク内の水をリム等へ供給するロータンク式のものが多い。
【０００３】
このロータンク式洋風便器は、ロータンクの分だけ後方に出張るところから、近年、ロータンクを省略し、水道水圧によって洗浄水を給水することにより洋風便器の後方出張りを著しく小さくした洋風便器が急速に普及しつつある。この水道水圧による便器洗浄装置にあっては、便鉢内から汚物やペーパーを強力に排出するために、便器のトラップ部にジェット孔から水を噴出させてサイホン排出水流を形成するサイホンジェット式洗浄方式が採用されている。
【０００４】
ところで、水道水圧によって便器に給水する場合、水道水圧が低いと十分な水勢によって洗浄水を便器に供給することができない。この対策として、水道配管の途中に蓄圧器を設けることが特開平７−３００８９１号に記載されている。
【０００５】
【特許文献１】
特開平７−３００８９１号公報
【０００６】
【発明が解決しようとする課題】
特開平７−３００８９１号公報の洋風便器設備にあっては、洋風便器はブローアウト式洋風便器であり、洋風便器に供給される洗浄水の全量を蓄圧器によって蓄圧する必要があり、蓄圧器が大容積のものになる。
【０００７】
本発明は、小型の蓄圧器を用いても十分な排出能力を有した便器洗浄装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明の便器洗浄装置は、便鉢のリムに給水するリム給水手段と、トラップ部に臨んだジェット孔に給水するジェット給水手段とを有し、該リム給水手段は水道配管からの水道水圧によって水をリムに供給するものである便器洗浄装置において、該ジェット給水手段は、蓄圧器で蓄圧した蓄圧水をジェット孔に供給可能とされていることを特徴とするものである。
【０００９】
かかる本発明の便器洗浄装置は、ジェット孔から噴出する水（好ましくは、この水の一部）のみを蓄圧器によって蓄圧したものであり、リムからの水は蓄圧しないので、蓄圧器の容積が小さくて足りる。
【００１０】
本発明では、ジェット孔に供給される水は、全量が蓄圧器で蓄圧された水であってもよいが、一部の水が蓄圧器で蓄圧された水とすることにより、蓄圧器の容積がさらに小さくて足りるようになる。この場合、便器洗浄に際しては、まずリムに所定時間水を流して鉢面付着物を洗い流し、その後、ジェット孔から水を噴出させてトラップ部にサイホン排出水流を形成する。
【００１１】
このジェット孔から水を噴出させるに際しては、まず蓄圧されていない水を流して比較的緩やかなサイホン排出水流を形成し、比較的排出されやすい沈降性汚物を排出し、その後、ジェット孔から蓄圧水を噴出させてサイホン排出水流を強化し、比較的排出されにくいペーパー等の浮遊物を排出するようにするのが好適である。これにより、蓄圧水の必要量を一段と減少させても十分に汚物やペーパーを便鉢から確実に排出することができる。
【００１２】
【発明の実施の形態】
以下、図面を参照して実施の形態について説明する。図１（ａ）は実施の形態に係る便器洗浄装置を備えた洋風便器設備の斜視図、図１（ｂ）はその電動弁ユニットの構成図、図２（ａ）は洗浄水供給流路の系統図、図２（ｂ）は洗浄水供給流路の給水タイミングチャートである。
【００１３】
陶器製の洋風便器１は、前部に鉢部２を備え、この鉢部２の上部内周にリム３が設けられている。このリム３へはリムノズル４を介して洗浄水が供給される。また、鉢部２のトラップ部には、該トラップ部にサイホン排出流を誘起するための水（ジェット水）を噴出するジェットノズル５が設けられている。このトラップ部は、鉢部２の底部から斜め上方に立ち上がる上昇部と、該上昇部に連なり、下方に立ち下がる立下部とを有しており、この立下部が排水管（図示略）に連なっている。このトラップ構造自体は周知のものである。
【００１４】
トイレルームの壁面には給水管の末端が突出しており、この給水管の末端に止水栓１０が取り付けられている。この止水栓１０は給水ホース１１を介して洋風便器１の後部に設置されたストレーナ１２に接続されている。このストレーナ１２を通過した水は電動弁ユニット２０へ供給可能とされると共に、該ストレーナ１２から分岐した配管１３を介して人体臀部の温水洗浄装置の温水タンク（図示略）へ供給可能とされている。
【００１５】
電動弁ユニット２０は、内部に配置された弁装置２２，２３をモータ２１で駆動し、リムノズル給水配管２４又はジェットノズル給水配管２５へ水を供給する。なお、停電時にも便器を使用できるようにするために、モータ２１の回転軸に手動式の洗浄ハンドル２８が取り付けられている。この電動弁ユニット２０は、カバーケーシング（図示略）内に配置されている。
【００１６】
この電動弁ユニット２０には、リムノズル用給水配管２４内及びジェットノズル用給水配管２５内の負圧をブレークするためのバキュームブレーカ２６，２７が設けられている。このバキュームブレーカ２６，２７は、該給水配管２４又は２５内に負圧が生じたときに開弁して該給水配管２４又は２５内を大気に連通させるよう構成されている。用便（大便）後に洋風便器１に洗浄水を供給するときには、まず弁２２が所定時間開弁してリム３へ洗浄水が供給されて鉢面に付着した汚れがトラップ部へ洗い落とされる。次に、弁２３が所定時間開弁し、ジェットノズル５から水が噴出してトラップ部にサイホンが誘起され、汚水が排水管へ排出される。その後、弁２２が再度所要時間開弁し、トラップ水が貯溜される。
【００１７】
図２の通り、このジェットノズル給水配管２５は第１流路３１と第２流路３２とに分岐し、配管５１にて合流している。該第１流路３１は第１開閉弁４１、減圧弁５０及び配管５１を介してジェットノズル５へ水を供給する。該第２流路３２は、第２開閉弁４２及び第３開閉弁４３を介して該配管５１からジェットノズル５へ水を供給する。
【００１８】
この第２開閉弁４２と第３開閉弁４３との間の第２流路３２は、接続配管６０を介して蓄圧器６１に連通している。この蓄圧器６１は、耐圧性外殻容器内を伸縮性の弾性隔膜によって空気蓄圧室と蓄水室とに区画した公知の構造を有している。第１開閉弁４１及び第３開閉弁４３を閉、第２開閉弁４２を開とした状態で配管２５に電動弁ユニット２０から水が供給されると、水道水圧によって水が蓄圧器６１内に徐々に流入し、水道水圧（静圧）と等しい圧力の水が蓄圧器６１内に貯えられる。第３開閉弁４３が開とされると、この蓄圧器６１内の蓄圧水がジェットノズル５へ供給される。
【００１９】
電動弁ユニット２０及び開閉弁４１，４２，４３は図示しない制御器によって制御される。この制御器へは、洋風便器１の使用者の検知信号及びリモコン（図示略）のフラッシュスイッチ信号が入力され、これらの信号に基づいて電動弁ユニット２０及び開閉弁４１，４２，４３が作動される。
【００２０】
このように構成された便器洗浄装置において、リムノズル４及びジェットノズル５のいずれにも洗浄水を供給しない非洗浄時に、開閉弁４１，４３を閉、開閉弁４２を開とした状態で電動弁ユニット２０がジェットノズル用給水配管２５に所定時間水を供給し、蓄圧器６１に蓄水させる。なお、水道配管からの水道水圧は、水道配管が細い場合などには、多量の吐水に伴ってかなり低い値となる。ところが、蓄圧器６１へは水が少しずつ流入するので、蓄圧器６１内に水道元圧とほぼ等しい水圧にて蓄水させることができる。この実施の形態では、水道元圧が２〜３ｋｇ／ｃｍ^２程度であっても十分な排出能力を得ることができる。
【００２１】
便器洗浄を開始する場合、電動弁ユニット２０は、図２（ｂ）の如く、まずリムノズル４へ所定時間水を供給し、便鉢の鉢面に付着した汚れを洗い落す。このとき、第１〜第３開閉弁４１，４２，４３はいずれも閉とされ、リムノズル４にのみ給水され、ジェットノズル５へは給水しない。
【００２２】
リムノズル４への給水を停止した後、第１開閉弁４１のみを開とし、第１流路３１のみを介して水道水圧の直圧によってジェットノズル５へ給水し、ジェットノズル５から比較的緩やかな水勢にて水を噴出させ、トラップ部に比較的緩やかなサイホンを誘起させ、沈殿性固形物など排出され易い汚物を水と共にトラップ部から排水管へ排出する。
【００２３】
第１開閉弁４１が開弁してから所定の時間ｔが経過すると、第２及び第３開閉弁４２，４３が開とされ、蓄圧器６１内の蓄圧水もジェットノズル５へ供給される。これにより、ジェットノズル５からの噴出水量及び水圧が増大し、トラップ部に強力なサイホン排出水流が形成される。これにより、鉢内の水面上あるいは水面付近に浮遊していたペーパーなど流れにくい固形物も速やかに排出される。
【００２４】
なお、蓄圧器６１内の蓄圧水を放出するときには、第２開閉弁４２を閉とし、第３開閉弁４３のみを開としてもよい。
【００２５】
その後、第１〜第３開閉弁４１〜４３が閉弁されると共に、電動弁ユニット２０によるジェットノズル給水用配管２５への給水が停止される。電動弁ユニット２０は、その後、所定時間だけリムノズル４へ給水し、便鉢底部に所要水量のトラップ水を貯留させる。さらにその後、図２（ｂ）には図示されていないが、第２開閉弁４２のみ開とした状態で電動弁ユニット２０がジェットノズル給水用配管２５に給水し、蓄圧器６１に蓄圧水を貯水させる。
【００２６】
このように、この実施の形態によると、蓄圧器６１の蓄圧水がジェットノズル５へ供給されることにより、強力なサイホン排出流を形成することができ、流れにくいペーパー等も確実に排出することが可能となる。
【００２７】
この実施の形態にあっては、サイホン排出初期には水道直結方式の給水のみによってジェットノズル５から水を噴出させ、流れやすい沈降性固形物を排出し、その後、流れにくいペーパー類を強力なサイホン流によって排出させるようにしているので、蓄圧器６１から供給する蓄圧水量が少なくて済み、蓄圧器６１が容積の小さいもので足りるようになる。
【００２８】
なお、上記の遅延時間ｔの長短は蓄圧器６１の容積に応じて選定されることが好ましい。
【００２９】
この実施の形態における第２開閉弁４２は逆止弁であってもよい。
【００３０】
本発明では、開閉弁４１〜４３のいずれか（好ましくは開閉弁４２，４３）と蓄圧器６１を共通の設置部材に設置してユニット化してもよく、このように構成することにより、これらの設置作業を簡易化することが可能となる。これら以外の機器でも適宜ユニット化してもよい。
【００３１】
上記実施の形態では、ジェットノズル給水用配管２５を第１流路３１と第２流路３２とに分岐させているが、図３のように、ジェットノズル給水用の主配管２５Ａをジェットノズル５に直結し、その途中に蓄圧器６１を接続配管６０を介して接続するよう構成してもよい。この主配管２５Ａには、上流側から順次に逆止弁７０、減圧弁５０、下流側開閉弁７１が設けられており、接続配管６０は、減圧弁５０と下流側開閉弁７１との間に接続されている。接続配管６０に蓄圧水用開閉弁７２を設け、蓄圧器６１からの蓄圧水の放出時期を上記実施の形態と同じとなるように制御している。なお、逆止弁７０の代りに開閉弁（上流側開閉弁）を設けてもよい。これらの開閉弁は制御器により開閉制御される。
【００３２】
蓄圧器６１は洋風便器内（例えば台座部の内側）に配置されてもよく、洋風便器外に配置されてもよい。
【００３３】
【発明の効果】
以上の通り、本発明によると、水道水圧によってサイホンジェット式洋風便器を洗浄する場合に、蓄圧器を用いて強力なサイホン排出流を形成することができる。また、本発明によると、この蓄圧器の容積の小型化を図ることも可能である。
【図面の簡単な説明】
【図１】（ａ）図は実施の形態に係る便器洗浄装置を備えた洋風便器設備の斜視図、（ｂ）はその電動弁ユニットの構成図である。
【図２】（ａ）図は洗浄水供給流路の系統図、（ｂ）図は洗浄水供給流路の給水タイミングチャートである。
【図３】別の実施の形態に係る便器洗浄装置の洗浄水流路図である。
【符号の説明】
１　洋風便器
２　鉢部
３　リム
４　リムノズル
５　ジェットノズル
６　便器
７　便蓋
８　便器ボックス
１０　止水栓
１１　給水ホース
１２　ストレーナ
２０　電動弁ユニット
３１　第１流路
３２　第２流路
４１　第１開閉弁
４２　第２開閉弁
４３　第３開閉弁
６１　蓄圧器
７０　逆止弁
７１　下流側開閉弁
７２　蓄圧水用開閉弁[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 Japanese Patent Application Laid-Open No. 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 with an accumulator. Large volume.
[0007]
SUMMARY OF THE INVENTION It is an object of the present invention to provide a toilet flushing device having a sufficient discharge capacity even with a small pressure accumulator.
[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. In a toilet flushing device for supplying water to a rim, the jet water supply means is capable of supplying pressurized water accumulated in a pressure accumulator to a jet hole.
[0009]
Such a toilet flushing device of the present invention accumulates only water (preferably, a part of this water) ejected from the jet hole by the pressure accumulator, and does not accumulate water from the rim. Small enough.
[0010]
In the present invention, the water supplied to the jet hole may be water whose entire amount has been stored in the pressure accumulator, but a part of the water is stored in the pressure accumulator to thereby increase the volume of the pressure accumulator. Will be smaller and sufficient. In this case, at the time of flushing the toilet, first, water is allowed to flow on the rim for a predetermined time to wash off the deposits on the pot surface, and then water is jetted from the jet holes to form a siphon discharge water flow in the trap portion.
[0011]
When jetting water from this jet hole, first, non-accumulated water is allowed to flow to form a relatively gentle siphon discharge water flow, to discharge sedimentary waste that is relatively easy to discharge, and then to accumulate water from the jet hole. It is preferable that the water is blown out to enhance the siphon discharge water flow so as to discharge suspended matter such as paper which is relatively difficult to discharge. Thereby, even if the required amount of the accumulated water is further reduced, the waste and the paper can be sufficiently discharged from the toilet bowl.
[0012]
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 flushing device according to an embodiment, FIG. 1B is a configuration diagram of the electric valve unit, and FIG. FIG. 2B is a water supply timing chart of the cleaning water supply flow path.
[0013]
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. A jet nozzle 5 for jetting water (jet water) for inducing a siphon discharge flow in the trap portion is provided in the trap portion of the bowl portion 2. 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.
[0014]
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 motor-operated valve unit 20 and can be supplied to a hot water tank (not shown) of a hot water washing device for a human buttock through a pipe 13 branched from the strainer 12. I have.
[0015]
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. 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 is disposed 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 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. When cleaning water is supplied to the Western-style toilet 1 after the toilet (stool), first, the valve 22 is opened for a predetermined time, the cleaning water is supplied to the rim 3, and the dirt attached to the pot surface is washed off to the trap portion. Next, 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 22 is opened again for a 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 a pipe 51. The first flow path 31 supplies water to the jet nozzle 5 through the first opening / closing 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 a second on-off valve 42 and a third on-off valve 43.
[0018]
The second flow path 32 between the second on-off valve 42 and the third on-off valve 43 communicates with a pressure accumulator 61 via a connection pipe 60. The pressure accumulator 61 has a known structure in which the inside of a pressure-resistant outer shell is divided into an air pressure accumulating chamber and a water accumulating chamber by an elastic elastic membrane. When water is supplied from the electric valve unit 20 to the pipe 25 in a state where the first on-off valve 41 and the third on-off valve 43 are closed and the second on-off valve 42 is open, the water is stored in the accumulator 61 by tap water pressure. Water that gradually flows in and has a pressure equal to the tap water pressure (static pressure) is stored in the 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 motor-operated 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 electric valve unit 20 and the opening / closing valves 41, 42, 43 are operated based on these signals. You.
[0020]
In the toilet flushing device configured as described above, the electric valve unit with the on-off valves 41 and 43 closed and the on-off valve 42 opened when the washing water is not supplied to both the rim nozzle 4 and the jet nozzle 5 is not washed. 20 supplies water to the jet nozzle water supply pipe 25 for a predetermined time, and causes the accumulator 61 to store water. 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 61 little by little, water can be stored in the accumulator 61 at a water pressure substantially equal to the water supply source pressure. In this embodiment, a sufficient discharge capacity can be obtained even when the water supply pressure is about ² to 3 kg / cm ² .
[0021]
When starting the toilet flush, the motor-operated valve unit 20 first supplies water to the rim nozzle 4 for a predetermined time, as shown in FIG. 2B, to wash off dirt attached to the bowl surface of the toilet bowl. At this time, the first to third on-off valves 41, 42, 43 are all closed, and water is supplied only to the rim nozzle 4, but not to the jet nozzle 5.
[0022]
After the supply of water to the rim nozzle 4 is stopped, only the first opening / closing valve 41 is opened, and water is supplied to the jet nozzle 5 by the direct pressure of tap water pressure only through the first flow path 31, and the water is relatively gentle from the jet nozzle 5. Water is spouted out by the water force to induce a relatively gentle siphon in the trap portion, and easily-discharged filth such as sedimentable solids is discharged from the trap portion to the drain pipe together with the water.
[0023]
When a predetermined time t has elapsed since the opening of the first on-off valve 41, the second and third on-off valves 42, 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, hard-to-flow solids such as paper floating on or near the water surface in the bowl are quickly discharged.
[0024]
When discharging the accumulated water in the 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 supply of water 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 trapped water at the bottom of the toilet bowl. Then, although not shown in FIG. 2B, the electric 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 it.
[0026]
As described above, according to this embodiment, since the accumulated water of the accumulator 61 is supplied to the jet nozzle 5, a strong siphon discharge flow can be formed, and paper and the like which are difficult to flow can be reliably discharged. Becomes possible.
[0027]
In this embodiment, in the initial stage of siphon discharge, water is jetted out of the jet nozzle 5 only by water supply of a direct water supply system to discharge sedimentable solids which are easy to flow, and thereafter, papers which are difficult to flow are turned into strong siphons. Since the discharge is performed by the flow, the amount of accumulated water supplied from the accumulator 61 is small, and the accumulator 61 having a small volume is sufficient.
[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 open / close valves 41 to 43 (preferably the open / close valves 42 and 43) and the accumulator 61 may be installed on a common installation member to form a unit. Installation work can be simplified. Devices other than these 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. However, as shown in FIG. 3, the jet nozzle water supply main pipe 25A is connected to the jet nozzle 5A. , And the pressure accumulator 61 may be connected through the connection pipe 60 on the way. The main pipe 25A is provided with a check valve 70, a pressure reducing valve 50, and a downstream opening / closing valve 71 in this order from the upstream side, and the connection pipe 60 is provided between the pressure reducing valve 50 and the downstream side opening / closing valve 71. It is connected. An on-off valve 72 for the accumulated water is provided in the connection pipe 60, and the release time of the accumulated water from the accumulator 61 is controlled to be the same as in the above embodiment. Note that an on-off valve (upstream-side on-off valve) may be provided instead of the check valve 70. These on-off valves are controlled to open and close by a controller.
[0032]
The pressure accumulator 61 may be arranged inside the Western-style toilet (for example, inside the pedestal portion) or 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 washing a siphon jet type Western style toilet with tap water pressure. 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. 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 flush water flow path diagram of a toilet flushing device according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Western-style toilet 2 Pot part 3 Rim 4 Rim nozzle 5 Jet nozzle 6 Toilet bowl 7 Toilet lid 8 Toilet box 10 Water stopcock 11 Water supply hose 12 Strainer 20 Electric valve unit 31 First flow path 32 Second flow path 41 First open / close valve 42 Second on-off valve 43 Third on-off valve 61 Accumulator 70 Check valve 71 Downstream on-off valve 72 On-off valve for accumulated water

Claims

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 a jet hole facing the trap portion,
In the toilet flushing device, wherein the rim water supply means supplies water to the rim by tap water pressure from a water pipe,
A toilet flushing device wherein the jet water supply means is capable of supplying pressurized water accumulated by an accumulator to a jet hole.

In claim 1, when flushing the toilet, the jet hole is supplied with water for a required time, and the accumulator is configured to supply the pressurized water to the jet hole from the pressure accumulator in a part of a time period during which water is supplied to the jet hole. Toilet washing device characterized.

In claim 1 or 2, the jet water supply means,
A first flow path communicating the water pipe with the jet hole and having no pressure accumulator;
A toilet flushing device having a second flow path communicating with a water pipe and the jet hole and having the pressure accumulator.

In claim 3, when cleaning the toilet bowl,
First, water is supplied to the rim for a predetermined time by the rim water supply means,
Next, the jet water is supplied to the jet hole by the first flow path of the jet water supply means for a required time, and the accumulated water is supplied to the jet hole by the second flow path during a part of the time when the jet hole is being supplied by the first flow path. A toilet flushing device configured to supply.

5. The toilet flushing apparatus according to claim 4, wherein water supply to the jet holes by the second flow path is started after a predetermined time has elapsed since the supply of water to the jet holes by the first flow path.

The jet water supply means according to any one of claims 3 to 5,
A first on-off valve provided in the first flow path;
A second on-off valve provided upstream of the accumulator in the second flow path;
A third on-off valve provided downstream of the accumulator in the second flow path;
A controller for controlling opening and closing of the first, second, and third on-off valves;
A toilet flushing device comprising:

The jet water supply means according to any one of claims 3 to 5,
An on-off valve provided in the first flow path;
A check valve provided upstream of the accumulator in the second flow path;
A third on-off valve provided downstream of the accumulator in the second flow path;
A controller for controlling the opening and closing of the on-off valves of the first flow path and the second flow path;
A toilet flushing device comprising:

In claim 1 or 2, the jet water supply means,
A main flow path communicating the water pipe and the jet hole,
A toilet accumulator having a pressure accumulator connected to the main flow path via a connection flow path.

In claim 8,
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 open / close valve,
An on-off valve for accumulated water is provided in the connection flow path,
A toilet flushing device provided with a controller for controlling the opening and closing of the downstream side on-off valve and the on-off valve for accumulated pressure water.

In claim 8,
An upstream opening / closing valve is provided in the main flow path,
A downstream on-off valve is provided downstream of the upstream on-off valve,
The connection flow path is connected to the main flow path between the upstream on-off valve and the downstream on-off valve,
An on-off valve for accumulated water is provided in the connection flow path,
A toilet flushing device provided with a controller for controlling the opening and closing of the upstream-side opening / closing valve, the downstream-side switching valve, and the on-off valve for accumulated water.

The toilet flushing apparatus according to any one of claims 6 to 10, wherein a part or all of the on-off valves and the accumulators are installed on a common installation member to form a unit.