JP5117261B2 - Flush toilet - Google Patents

Flush toilet Download PDF

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JP5117261B2
JP5117261B2 JP2008098978A JP2008098978A JP5117261B2 JP 5117261 B2 JP5117261 B2 JP 5117261B2 JP 2008098978 A JP2008098978 A JP 2008098978A JP 2008098978 A JP2008098978 A JP 2008098978A JP 5117261 B2 JP5117261 B2 JP 5117261B2
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water
toilet
toilet bowl
drainage channel
intake
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JP2009249909A (en
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嵩正 伊奈
康宏 近藤
雅史 深川
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Lixil Corp
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Description

本発明は水洗式便器に関する。   The present invention relates to a flush toilet bowl.

特許文献1に従来の水洗式便器が開示されている。この水洗式便器は、便鉢と、便鉢の下流側に連通し、便鉢とともに封水部を形成する便器排水路とを有する便器本体を備えている。また、水洗式便器は洗浄水供給装置を備えている。この洗浄水供給装置は、便鉢の上部開口の周縁に設けられたリムに洗浄水を供給した後、便鉢の下端に設けられ、便器排水路に向けて開口するジェット口に洗浄水を供給する。ジェット口から洗浄水が噴出すると、便器排水路内にサイホン作用が発生し、封水部の洗浄水は便器排水路の下流へ排出される。洗浄水供給装置によるジェット口への洗浄水の供給が終了すると、サイホン作用が終了する。その後に洗浄水供給装置によりリムへ供給される洗浄水の水量を少なくすることにより、便鉢内の洗浄水の水面を通常の待機時の水面よりも低くすることができる。   Patent Document 1 discloses a conventional flush toilet. This flush toilet bowl includes a toilet bowl body having a toilet bowl and a toilet drainage channel that communicates with the downstream side of the toilet bowl and forms a sealed portion together with the toilet bowl. Further, the flush toilet bowl is provided with a washing water supply device. This cleaning water supply device supplies cleaning water to a rim provided at the periphery of the upper opening of the toilet bowl, and then supplies cleaning water to a jet opening provided at the lower end of the toilet bowl and opening toward the toilet drainage channel To do. When the washing water is ejected from the jet port, a siphon action is generated in the toilet drainage channel, and the washing water in the sealing portion is discharged downstream of the toilet drainage channel. When the supply of the cleaning water to the jet port by the cleaning water supply device is finished, the siphon action is finished. Thereafter, by reducing the amount of cleaning water supplied to the rim by the cleaning water supply device, the surface of the cleaning water in the toilet bowl can be made lower than the normal standby water level.

このような構成である従来の水洗式便器では、便鉢内の洗浄水の水面を通常の待機時の水面よりも低くして便鉢内面を掃除することができる。このため、通常の待機時の水面近傍の便鉢面をブラシ等で容易に掃除することができ、水垢を良好に取り除くことができる。また、ブラシ等で便鉢面を掃除する際に生じる水跳ねを少なくすることができる。   In the conventional flush toilet having such a configuration, the inner surface of the toilet bowl can be cleaned by making the surface of the wash water in the toilet bowl lower than the normal standby surface. For this reason, the toilet bowl surface near the water surface at the time of normal standby can be easily cleaned with a brush or the like, and the scale can be removed well. Moreover, the water splash which arises when cleaning a toilet bowl surface with a brush etc. can be decreased.

また、この水洗式便器は、大便及び男子小便を行う際に、便鉢内の洗浄水の水面を通常の待機時の水面よりも低くすることにより、便鉢内の洗浄水の跳ね返りを少なくすることができる。   In addition, this flush toilet bowl reduces the splashing of flushing water in the toilet bowl by lowering the flushing water level in the toilet bowl compared to the normal standby level when performing urination and men's urination. be able to.

特開平11−350578号公報JP-A-11-350578

しかし、上記従来の水洗式便器では、便鉢内の洗浄水の水面を低下させるために、ジェット口から洗浄水を噴出させなければならず、節水性及び静音性に欠ける。   However, in the conventional flush toilet, in order to lower the surface of the wash water in the toilet bowl, the wash water must be ejected from the jet port, which lacks water saving and quietness.

本発明は、上記従来の実情に鑑みてなされたものであって、便鉢内の洗浄水の水面を良好に低下させることができる水洗式便器を提供することを解決すべき課題としている。   This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the flush toilet bowl which can reduce the water surface of the wash water in a toilet bowl favorably.

本発明の水洗式便器は、便鉢と、該便鉢の下流側に連通し、該便鉢とともに封水部を形成する便器排水路と、該便器排水路の下流側に連通し、洗浄水が滞留する滞留部とを有する便器本体と、
該便鉢に洗浄水を供給する洗浄水供給装置と、
該便器排水路から空気を吸引し、かつ該便器排水路へ空気を排出する吸排気装置と、
該洗浄水供給装置及び該吸排気装置を制御する制御装置とを備えた水洗式便器において、
前記便器排水路には、前記封水部の洗浄水と前記滞留部の洗浄水とにより閉鎖空間が形成され、
前記制御装置は、前記吸排気装置が該便器排水路から該閉鎖空間の空気を吸引する時に、前記洗浄水供給装置が前記便鉢へ洗浄水を供給しない便鉢内水面低下モードを有していることを特徴とする。
The flush toilet of the present invention communicates with the toilet bowl, the toilet drain downstream of the toilet bowl, and forms a sealed water portion with the toilet bowl, and the downstream of the toilet drain path. A toilet body having a staying part in which
A washing water supply device for supplying washing water to the toilet bowl;
An intake / exhaust device for sucking air from the toilet drainage channel and discharging air to the toilet drainage channel;
In the flush toilet equipped with the washing water supply device and a control device for controlling the intake / exhaust device,
In the toilet drainage channel, a closed space is formed by the washing water of the sealed water part and the washing water of the staying part,
The control device has a toilet bowl water surface lowering mode in which the cleaning water supply device does not supply cleaning water to the toilet bowl when the intake / exhaust device sucks air in the closed space from the toilet drainage channel. It is characterized by being.

この水洗式便器では、便鉢内水面低下モードが実行されると、洗浄水供給装置による便鉢への洗浄水の供給を行なわずに吸排気装置により便器排水路から閉鎖空間の空気が吸引され、その負圧力により封水部の洗浄水が滞留部側に流出する。これにより、便鉢内の洗浄水の水面を低下させることができる。このように、便鉢内の洗浄水の水面を低下させる際に、洗浄水供給装置により便鉢へ洗浄水を供給せず、また、吸排気装置は便器排水路から閉鎖空間の空気を吸引する音をほとんど発生させないため、この水洗式便器は節水性及び静音性に優れている。   In this flush toilet, when the toilet bowl water level lowering mode is executed, the air in the closed space is sucked from the toilet drainage channel by the intake / exhaust device without supplying the wash water to the toilet bowl by the wash water supply device. The negative pressure causes the washing water in the sealed portion to flow out to the staying portion. Thereby, the surface of the washing water in the toilet bowl can be lowered. Thus, when lowering the surface of the wash water in the toilet bowl, the wash water supply device does not supply the wash water to the toilet bowl, and the intake / exhaust device sucks the air in the closed space from the toilet drainage channel. This flush toilet bowl is excellent in water saving and quietness because it hardly generates sound.

したがって、本発明の水洗式便器は、便鉢内の洗浄水の水面を良好に低下させることができる。   Therefore, the flush toilet of the present invention can satisfactorily lower the water level of the wash water in the toilet bowl.

滞留部は、便鉢内水面低下モードが実行された後も滞留する洗浄水により水封され得る。この場合、滞留部の下流側から上流側に臭気が逆流することが防止される。このため、便鉢内の洗浄水の水面を低下させて便鉢内面の掃除等を行う際に、封水部の洗浄水が滞留部側へ押し出され、封水部の水封が切れてしまっても、滞留部の下流側から水洗式便器が設置されたトイレ室内に臭気が逆流してしまうことを防止することができる。   The staying part can be sealed with washing water that stays even after the toilet bowl water level lowering mode is executed. In this case, the odor is prevented from flowing backward from the downstream side to the upstream side of the staying portion. For this reason, when cleaning the inner surface of the toilet bowl by lowering the water level of the cleaning water in the toilet bowl, the cleaning water in the sealing part is pushed out to the staying part side, and the water seal in the sealing part is broken. However, it is possible to prevent the odor from flowing backward from the downstream side of the staying part into the toilet room where the flush toilet is installed.

便鉢内水面低下モードは、吸排気装置が便器排水路から閉鎖空間の空気を吸引した後に便器排水路へ空気を排出し得る。この場合、吸排気装置により便器排水路から空気が吸引され、封水部の洗浄水が滞留部側に流出した後に便器排水路の上流側に残存する洗浄水が便鉢側に押し戻される。このため、封水部の洗浄水は滞留部側へ押し出され難くなり、封水部の水封が切れにくくなる。このため、封水部の下流側からトイレ室内に臭気が逆流してしまうことを防止することができる。   In the toilet bowl water level lowering mode, air can be discharged to the toilet drainage channel after the intake / exhaust device sucks air in the closed space from the toilet drainage channel. In this case, air is sucked from the toilet drainage channel by the intake / exhaust device, and the washing water remaining on the upstream side of the toilet drainage channel is pushed back to the toilet bowl side after the flushing water in the sealed water portion flows out to the retention portion side. For this reason, the washing water in the sealed water portion is hardly pushed out toward the staying portion, and the sealed water in the sealed water portion is difficult to break. For this reason, it is possible to prevent the odor from flowing back into the toilet room from the downstream side of the sealing portion.

制御装置は、便鉢内水面低下モードの実行により便鉢内の水面が低下した後、洗浄水供給装置により便鉢に洗浄水が供給され、便鉢内の水面が上昇位置まで上昇した後、吸排気装置を作動させて便器排水路から閉鎖空間の空気を吸引し、その後、洗浄水供給装置の便鉢への洗浄水の供給を停止し、吸排気装置が便器排水路へ空気を排出する便鉢内水面復帰モードを有し得る。この場合、便鉢内水面低下モードの実行後に、便鉢内の洗浄水の水面を通常の便器洗浄と同じ上昇位置まで上昇させて、サイホン作用を発生させ、通常の便器洗浄時と同様に便鉢を覆水する。このため、封水部や滞留部の洗浄水の量及び閉鎖空間の空気の量等を通常の待機時と同じ状態に確実に復帰させることができるため、その後の便器洗浄を良好に行うことができる。   After the water level in the toilet bowl is lowered by the execution of the toilet bowl water level lowering mode, the control device is supplied with washing water to the toilet bowl by the washing water supply device, and the water level in the toilet bowl rises to the raised position, The intake / exhaust device is operated to suck the air in the closed space from the toilet drainage channel, and then the supply of cleaning water to the toilet bowl of the cleaning water supply device is stopped, and the intake / exhaust device exhausts air to the toilet drainage channel It may have a toilet bowl water surface return mode. In this case, after the toilet bowl water level lowering mode is executed, the flush water level in the toilet bowl is raised to the same ascending position as in normal toilet flushing to generate a siphon action, and the toilet bowl is washed in the same manner as in normal toilet flushing. Cover the pot with water. For this reason, since it is possible to reliably return the amount of washing water in the sealed water part and the staying part and the amount of air in the closed space to the same state as during normal standby, it is possible to perform subsequent toilet flushing well. it can.

便鉢内水面低下モードは、吸排気装置が便器排水路から閉鎖空間の空気を吸引する前に洗浄水供給装置を作動させ、便鉢に設定量の洗浄水を供給し得る。この場合、滞留部の洗浄水が何らかの理由により減少したり、水封が切れていたりしても、便鉢内水面低下モードの実行初期に滞留部に洗浄水が供給されることにより、滞留部が確実に水封される。このため、閉鎖空間を確実に形成することができる。よって、吸排気装置が便器排水路から空気を吸引すると負圧力が生じ、便鉢内の洗浄水の水面を確実に低下させることができる。また、滞留部が待機時に空気を流通可能に形成されていても、便鉢内水面低下モードの実行初期に滞留部に洗浄水が供給されることにより、滞留部を水封することができる。これにより、閉鎖空間を形成することができる。このため、吸排気装置が便器排水路から閉鎖空間の空気を吸引すると負圧力が生じ、便鉢内の洗浄水の水面を確実に低下させることができる。   In the toilet bowl water level lowering mode, the washing water supply device is operated before the intake / exhaust device sucks the air in the closed space from the toilet drainage channel, and a set amount of washing water can be supplied to the toilet bowl. In this case, even if the washing water in the staying portion is reduced for some reason or the water seal is cut off, the washing water is supplied to the staying portion at the initial stage of execution of the toilet bowl water level lowering mode, so that the staying portion Is securely sealed. For this reason, a closed space can be formed reliably. Therefore, when the intake / exhaust device sucks air from the toilet drainage channel, negative pressure is generated, and the water level of the wash water in the toilet bowl can be reliably lowered. Moreover, even if the staying part is formed so that air can be circulated during standby, the staying part can be sealed with water by supplying cleaning water to the staying part at the initial stage of the execution of the toilet bowl water level lowering mode. Thereby, a closed space can be formed. For this reason, when the intake / exhaust device sucks air in the closed space from the toilet drainage channel, a negative pressure is generated, and the water level of the wash water in the toilet bowl can be reliably lowered.

以下、本発明の水洗式便器を具体化した実施例1及び2を図面を参照しつつ説明する。   Examples 1 and 2 embodying the flush toilet of the present invention will be described below with reference to the drawings.

実施例1の水洗式便器は、図1に示すように、便器本体1と、洗浄水供給装置10と、吸排気装置20と、制御装置30とを備えている。   As shown in FIG. 1, the flush toilet according to the first embodiment includes a toilet body 1, a flush water supply device 10, an intake / exhaust device 20, and a control device 30.

便器本体1は、便鉢2と、便器排水路5と、滞留部Rとを有している。便鉢2の上部周縁には、リム3が設けられている。便鉢2の下端には、水平面上で開口する流出口4が設けられている。流出口4には、便器排水路5が連通している。便器排水路5は、上昇流路6と下降流路7とから構成されている。上昇流路6と便鉢2とにより、洗浄水が滞留する封水部Hが形成されている。   The toilet body 1 includes a toilet bowl 2, a toilet drainage channel 5, and a staying portion R. A rim 3 is provided on the upper peripheral edge of the toilet bowl 2. An outlet 4 that opens on a horizontal plane is provided at the lower end of the toilet bowl 2. A toilet drainage channel 5 communicates with the outlet 4. The toilet drainage channel 5 includes an ascending channel 6 and a descending channel 7. The ascending flow path 6 and the toilet bowl 2 form a sealed water portion H in which washing water stays.

下降流路7は、上昇流路6の上昇端に設けられた開口に連通する便器排水管40により形成されている。便器排水管40の下流端の開口は、排水接続具50を介して図示しない床面に引き出された排水管の接続口に連通される。便器排水管40は、上面に吸排気装置20を接続する連通管41が設けられている。   The descending flow path 7 is formed by a toilet drain pipe 40 communicating with an opening provided at the rising end of the ascending path 6. The opening at the downstream end of the toilet drain pipe 40 communicates with a drain pipe connection port drawn out to a floor surface (not shown) via a drain connector 50. The toilet drain pipe 40 is provided with a communication pipe 41 for connecting the intake / exhaust device 20 to the upper surface.

排水接続具50は、筐体51と、筐体51内に配置される内部配管52とを有している。筐体51は、上面に設けられ、便器排水管40の下流端部とパッキンPを介して接続される流入口51Uと、下面に設けられ、排水管に接続される流出口51Dとを有している。内部配管52は、流入口51Uに連続する下降流路52Aと、下降流路52Aの下流端に連続し、筐体51内に開口する下流口52Cを有する上昇流路52Bとから構成されている。内部配管52は、下降流路52Aと上昇流路52Bとから形成され、洗浄水が滞留する滞留部Rを有している。滞留部Rは、滞留する洗浄水により完全に水封される。これにより、便器本体1に形成される封水部Hの下流側と、滞留部Rの上流側との間の便器排水路5及び内部配管52には、閉鎖空間が形成される。また、滞留部Rの下流側から上流側に臭気が逆流することが防止される。このため、便鉢2の内面を掃除する際等に封水部Hの水封が切れたとしても、滞留部Rの下流側から水洗式便器が設置されたトイレ室内に臭気が逆流してしまうことを防止することができる。   The drainage connector 50 includes a housing 51 and an internal pipe 52 disposed in the housing 51. The casing 51 includes an inlet 51U provided on the upper surface and connected to the downstream end of the toilet drain pipe 40 via the packing P, and an outlet 51D provided on the lower surface and connected to the drain pipe. ing. The internal pipe 52 includes a descending channel 52A that is continuous with the inflow port 51U, and an ascending channel 52B that is continuous with the downstream end of the descending channel 52A and has a downstream port 52C that opens into the housing 51. . The internal pipe 52 is formed of a descending channel 52A and an ascending channel 52B, and has a staying portion R in which the washing water stays. The stay part R is completely sealed with the staying wash water. As a result, a closed space is formed in the toilet drainage channel 5 and the internal pipe 52 between the downstream side of the sealing portion H formed in the toilet body 1 and the upstream side of the retention portion R. Further, the odor is prevented from flowing backward from the downstream side of the staying portion R to the upstream side. For this reason, even when the water seal of the sealing part H is broken when the inner surface of the toilet bowl 2 is cleaned, the odor flows backward from the downstream side of the retention part R into the toilet room where the flush toilet is installed. This can be prevented.

洗浄水供給装置10は、図示しない水道管に連通されている。また、洗浄水供給装置10には、図示しないストレーナ装置、定流量弁、開閉弁及びバキュームブレーカが上流側から順に配置されている。洗浄水供給装置10の下流側には、ノズル11が接続されている。このノズル11の下流端は、リム3に連通している。ノズル11の先端から吐水される洗浄水は、リム3を旋回しながら便鉢2内へ流出し、便鉢2内に旋回流を発生させる。開閉弁は、開弁及び閉弁される際、徐々に吐水流量が増加及び減少するようなものを採用し、急激な弁の開閉によりウォーターハンマー現象が生じないようにされている。   The washing water supply device 10 is communicated with a water pipe (not shown). Further, in the cleaning water supply device 10, a strainer device, a constant flow valve, an on-off valve, and a vacuum breaker (not shown) are sequentially arranged from the upstream side. A nozzle 11 is connected to the downstream side of the cleaning water supply device 10. The downstream end of the nozzle 11 communicates with the rim 3. Wash water discharged from the tip of the nozzle 11 flows into the stool 2 while turning the rim 3 and generates a swirl flow in the stool 2. The on-off valve employs a valve that gradually increases and decreases the water discharge flow rate when the valve is opened and closed, so that the water hammer phenomenon does not occur due to sudden opening and closing of the valve.

吸排気装置20は、吸排気タンク21と、駆動装置22とを有している。吸排気タンク21は、鍋形状のハウジング21H内に上下方向に移動可能な隔膜21Dが設けられている。ハウジング21Hの下面には、吸排気管21Pが設けられている。吸排気管21Pは、便器排水管40の連通管41に挿入され接続されている。駆動装置22は、上下方向に長い筒形状のケース本体22Hと、ケース本体22H内に上下方向に移動可能な隔膜22Dと、隔膜22Dを下方から押上可能な円盤形状の押上板22Aを有する棒状体22Bと、押上板22Aを上下動させるモーター22Mとを有している。吸排気タンク21の隔膜21Dによって区画された上側の上部空間24と、駆動装置22の隔膜22Dによって区画された下側の下部空間25とは、接続管23によって接続されている。   The intake / exhaust device 20 includes an intake / exhaust tank 21 and a drive device 22. The intake / exhaust tank 21 is provided with a diaphragm 21 </ b> D that is movable in a vertical direction in a pan-shaped housing 21 </ b> H. An intake / exhaust pipe 21P is provided on the lower surface of the housing 21H. The intake / exhaust pipe 21 </ b> P is inserted and connected to the communication pipe 41 of the toilet drain pipe 40. The driving device 22 is a rod-like body having a cylindrical case body 22H that is long in the vertical direction, a diaphragm 22D that can move in the vertical direction in the case body 22H, and a disk-shaped push-up plate 22A that can push up the diaphragm 22D from below. 22B and a motor 22M that moves the push-up plate 22A up and down. The upper upper space 24 defined by the diaphragm 21D of the intake / exhaust tank 21 and the lower lower space 25 defined by the diaphragm 22D of the driving device 22 are connected by a connecting pipe 23.

吸排気装置20では、モーター22Mが回転し、棒状体22Bが上方に延びることにより、押上板22Aが上方に押し上げられ、駆動装置22の隔膜22Dが上昇位置に移動する。これにより、吸排気タンク21の上部空間24の空気が駆動装置の下部空間25に吸引され、吸排気タンク21の隔膜21Dは上昇位置に移動する。このようにして、吸排気タンク21が便器排水路5から閉鎖空間の空気を吸引する。また、モーター22Mが回転し、棒状体22Bが下方に縮むことにより、押上板22Aが下降し、駆動装置22の隔膜22Dが下降位置に移動する。これにより、駆動装置22の下部空間25の空気が吸排気タンク21の上部空間24に押し込まれ、吸排気タンク21の隔膜21Dは下降位置に移動する。このようにして、吸排気タンク21が便器排水路5へ空気を排出する。また、駆動装置22の隔膜22Dが下降しない限り、吸排気タンク21の隔膜21Dは上昇位置に維持される。   In the intake / exhaust device 20, the motor 22M rotates and the rod-like body 22B extends upward, whereby the push-up plate 22A is pushed upward, and the diaphragm 22D of the drive device 22 moves to the raised position. As a result, the air in the upper space 24 of the intake / exhaust tank 21 is sucked into the lower space 25 of the drive unit, and the diaphragm 21D of the intake / exhaust tank 21 moves to the raised position. In this way, the intake / exhaust tank 21 sucks air in the closed space from the toilet drainage channel 5. Further, when the motor 22M rotates and the rod-like body 22B contracts downward, the push-up plate 22A descends, and the diaphragm 22D of the driving device 22 moves to the lowered position. Thereby, the air in the lower space 25 of the drive device 22 is pushed into the upper space 24 of the intake / exhaust tank 21, and the diaphragm 21D of the intake / exhaust tank 21 moves to the lowered position. In this way, the intake / exhaust tank 21 discharges air to the toilet drainage channel 5. Further, unless the diaphragm 22D of the driving device 22 is lowered, the diaphragm 21D of the intake / exhaust tank 21 is maintained at the raised position.

制御装置30は、図示しないリモコンからの信号により洗浄水供給装置10と吸排気装置20とを制御する。つまり、制御装置30は、洗浄水供給装置10を構成する開閉弁の開閉と、吸排気装置20の駆動装置22に組み込まれたモーター22Mの回転とを制御することができる。また、制御装置30は記憶装置を有し、洗浄水供給装置10及び吸排気装置20の複数の制御モードを記憶し、実行させることができる。   The control device 30 controls the cleaning water supply device 10 and the intake / exhaust device 20 by a signal from a remote controller (not shown). That is, the control device 30 can control the opening / closing of the opening / closing valve constituting the cleaning water supply device 10 and the rotation of the motor 22M incorporated in the drive device 22 of the intake / exhaust device 20. The control device 30 has a storage device, and can store and execute a plurality of control modes of the cleaning water supply device 10 and the intake / exhaust device 20.

以上の構成を有する本発明の水洗式便器において、便鉢2内の水面を低下させる便鉢内水面低下モードの実行及び便鉢2内の水面を通常の待機時の水面に復帰させる便鉢内水面復帰モードの実行について説明する。   In the flush toilet of the present invention having the above-described configuration, the toilet bowl in which the water level in the toilet bowl 2 is lowered and the water level in the toilet bowl 2 is returned to the normal standby water level. Execution of the water surface return mode will be described.

[待機時(図1)]
図1に示すように、便器本体1の封水部Hには、洗浄水が上昇流路6の上昇端の開口下部6Aの高さまで滞留している。このため、便鉢2内の水面Lは、上昇流路6の上昇端の開口下部6Aの高さの待機位置に位置している。また、排水接続具50の内部配管52の滞留部Rは、滞留する洗浄水により完全に水封されている。このため、封水部Hの下流側と、滞留部Rの上流側との間の便器排水路5及び内部配管52には、閉鎖空間が形成されている。また、封水部H及び滞留部Rにより、滞留部Rより下流側の臭気が水洗式便器を設置したトイレ室内に逆流してしまうことを防止している。吸排気タンク21の隔膜21D及び駆動装置22の隔膜22Dは、下降位置に配置されている。
[Standby (Fig. 1)]
As shown in FIG. 1, the washing water stays in the sealing part H of the toilet body 1 up to the height of the opening lower part 6 </ b> A at the rising end of the rising channel 6. For this reason, the water surface L in the toilet bowl 2 is located at the standby position at the height of the opening lower portion 6 </ b> A at the rising end of the rising flow path 6. Further, the staying portion R of the internal pipe 52 of the drainage connector 50 is completely sealed with the staying wash water. For this reason, a closed space is formed in the toilet drainage channel 5 and the internal pipe 52 between the downstream side of the sealed water portion H and the upstream side of the staying portion R. Moreover, the sealing part H and the stay part R prevent the odor downstream from the stay part R from flowing back into the toilet room in which the flush toilet is installed. The diaphragm 21D of the intake / exhaust tank 21 and the diaphragm 22D of the driving device 22 are disposed at the lowered position.

[排水工程(図2)]
図示しないリモコンに設けられた便鉢内水面低下ボタンが操作されると、制御装置30は、便鉢内水面低下モードを実行する。便鉢内水面低下モードが実行されると、図9のA時点からB時点の間に、図2に示すように、駆動装置22のモーター22Mが回転し、押上板22Aを上方に押し上げ、隔膜22Dを上昇位置に移動させる。これにより、吸排気タンク21の隔膜21Dも上昇位置に移動し、便器排水路5から閉鎖空間の空気を吸引する。この際に生じる負圧力によって封水部Hの洗浄水が滞留部R側に流出する。このため、便鉢2内の洗浄水の水面Lは、流出口4に向けて下降する。
[Drainage process (Figure 2)]
When a toilet bowl water level lowering button provided on a remote controller (not shown) is operated, the control device 30 executes a toilet bowl water level lowering mode. When the toilet bowl water level lowering mode is executed, the motor 22M of the driving device 22 rotates between the time A and the time B in FIG. 9 to push the push-up plate 22A upward, as shown in FIG. 22D is moved to the raised position. Thereby, the diaphragm 21 </ b> D of the intake / exhaust tank 21 is also moved to the raised position, and the air in the closed space is sucked from the toilet drainage channel 5. The washing water in the sealed water portion H flows out to the staying portion R due to the negative pressure generated at this time. For this reason, the water surface L of the wash water in the toilet bowl 2 descends toward the outlet 4.

吸排気タンク21の隔膜21Dが上昇位置に移動した後も、図9のB時点からC時点の間において、封水部Hの洗浄水は滞留部R側に流出する。この際、便鉢2内の洗浄水の水面Lが低くなるにつれて、封水部Hの上流側より下流側の水位が徐々に高くなるため、封水部Hの洗浄水には上昇流路6内から便鉢2方向に戻ろうとする作用が徐々に強くなる。このため、封水部Hから滞留部R側に流出する洗浄水の流量は徐々に少なくなる。一方、滞留部Rに流入する洗浄水の流量が少なくなるにつれて、待機時よりも上昇した滞留部Rの上流側の水位は、徐々に低下する。これにより、滞留部Rの上流側と下流側との水位差が徐々に小さくなるため、滞留部Rの洗浄水には上流から下流側に流れようとする作用が徐々に弱くなる。これため、滞留部Rに封水部H内の洗浄水を引き込む力も弱くなるため、さらに封水部Hの洗浄水が滞留部R側に流出する洗浄水量は少なくなる。   Even after the diaphragm 21 </ b> D of the intake / exhaust tank 21 moves to the ascending position, the cleaning water in the sealed water portion H flows out to the staying portion R side from time B to time C in FIG. 9. At this time, as the water level L of the wash water in the toilet bowl 2 becomes lower, the downstream water level gradually increases from the upstream side of the sealed water portion H, so that the ascending flow path 6 flows into the wash water of the sealed water portion H. The action of returning from the inside toward the toilet bowl 2 is gradually strengthened. For this reason, the flow rate of the washing water flowing out from the sealed water portion H to the staying portion R side gradually decreases. On the other hand, as the flow rate of the washing water flowing into the staying portion R decreases, the water level on the upstream side of the staying portion R that has risen from the standby time gradually decreases. As a result, the difference in water level between the upstream side and the downstream side of the retention portion R is gradually reduced, so that the action of trying to flow from the upstream side to the downstream side is gradually weakened in the wash water of the retention portion R. For this reason, since the force to draw the cleaning water in the sealed water portion H into the staying portion R is also weakened, the amount of cleaning water flowing out from the sealing water portion H to the staying portion R side is further reduced.

[安定工程(図3)]
図9のC時点において、図3に示すように、封水部Hの上流側と下流側の水位差により生じる上昇流路6内の洗浄水が便鉢2方向に戻ろうとする作用と、滞留部Rの上流側と下流側の水位差により生じる滞留部R内の洗浄水が下流側に流出しようとする作用とが均衡した状態になると、封水部H内の洗浄水は、滞留部R側に流出しなくなり、便鉢2内の水面は、流出口4よりも低い位置で停止する。滞留部Rは、排水接続具50の流出口51Dに連通する排水管内の圧力変動の影響を受ける。滞留部Rが下流側の圧力変動の影響を受けると封水部Hとの均衡が崩れるおそれがあるため、図9のC時点からD時点まで、吸排気タンク21の隔膜21Dを上昇位置に維持し、封水部H内の洗浄水を安定させる。
[Stable process (Fig. 3)]
At the time point C in FIG. 9, as shown in FIG. When the washing water in the staying part R caused by the difference in the water level between the upstream side and the downstream side of the part R is balanced with the action of flowing out to the downstream side, the washing water in the sealed water part H is retained in the staying part R. The water surface in the toilet bowl 2 stops at a position lower than the outlet 4. The stay part R is affected by pressure fluctuations in the drain pipe communicating with the outlet 51D of the drain connector 50. Since the balance with the sealed water portion H may be lost if the staying portion R is affected by the pressure fluctuation on the downstream side, the diaphragm 21D of the intake / exhaust tank 21 is maintained at the elevated position from time C to time D in FIG. And the washing water in the sealed water portion H is stabilized.

[低下水面形成工程(図4)]
図9のD時点からE時点の間に、図4に示すように、駆動装置22のモーター22Mが回転し、押上板22Aを下方に下降させ、隔膜22Dを下降位置に移動させる。この際、隔膜22Dを上昇位置から下降位置に移動させるのに要する時間は、便鉢内水面低下モードの実行初期に隔膜22Dを下降位置から上昇位置に移動させるよりも長く設定されている。これにより、吸排気タンク21の隔膜21Dも下降位置に移動し、便器排水路5へ空気を排出する。すると、上昇流路6内の洗浄水は便鉢2側に押し戻され、便鉢2内の水面Lは流出口4より僅か高くなる。また、上昇流路6内の洗浄水の水位は、上昇流路6の上昇端の開口下部6Aよりも低くなる。このため、封水部Hの洗浄水は、滞留部R側に押し出され難くなるため封水部Hの水封が切れ難くなる。よって、便鉢2の内面を掃除する際等に、封水部Hの下流側から水洗式便器が設置されたトイレ室内に臭気が逆流してしまうおそれを少なくすることができる。一方、滞留部Rの上流側の水位は低下し、待機状態と同じ水位にもどる。
[Dropped water surface forming step (FIG. 4)]
As shown in FIG. 4, the motor 22M of the driving device 22 rotates between the time point D and time E in FIG. 9, lowers the push-up plate 22A downward, and moves the diaphragm 22D to the lowered position. At this time, the time required to move the diaphragm 22D from the raised position to the lowered position is set longer than when the diaphragm 22D is moved from the lowered position to the raised position at the initial stage of execution of the toilet bowl water level lowering mode. Thereby, the diaphragm 21 </ b> D of the intake / exhaust tank 21 is also moved to the lowered position, and air is discharged to the toilet drainage channel 5. Then, the wash water in the ascending flow path 6 is pushed back to the toilet bowl 2 side, and the water level L in the toilet bowl 2 becomes slightly higher than the outlet 4. Further, the level of the washing water in the ascending flow path 6 is lower than the opening lower part 6 </ b> A at the rising end of the ascending flow path 6. For this reason, since the washing water of the sealed water part H becomes difficult to be pushed out to the retention part R side, the water seal of the sealed water part H becomes difficult to break. Therefore, when cleaning the inner surface of the toilet bowl 2, the possibility that odors may flow backward from the downstream side of the sealing part H into the toilet room where the flush toilet is installed can be reduced. On the other hand, the water level on the upstream side of the staying portion R decreases and returns to the same water level as in the standby state.

このように、実施例1の水洗式便器では、便鉢内水面低下モードが実行されると、洗浄水供給装置10による便鉢2への洗浄水の供給が行われずに吸排気装置20により便器排水路5から閉鎖空間の空気が吸引され、その負圧力により封水部Hの洗浄水が滞留部R側に流出する。これにより、便鉢2内の洗浄水の水面を低下させることができる。この際、洗浄水供給装置10により便鉢2へ洗浄水を供給せず、また、吸排気装置20は便器排水路5から閉鎖空間の空気を吸引する音をほとんど発生させないため、この水洗式便器は節水性及び静音性に優れている。   As described above, in the flush toilet according to the first embodiment, when the toilet bowl water level lowering mode is executed, the flush water supply device 10 does not supply the flush water to the toilet bowl 2 and the intake / exhaust device 20 performs the toilet bowl. Air in the closed space is sucked from the drainage channel 5, and the washing water of the sealed water portion H flows out to the staying portion R side by the negative pressure. Thereby, the surface of the washing water in the toilet bowl 2 can be lowered. At this time, the flush water supply device 10 does not supply flush water to the toilet bowl 2, and the intake / exhaust device 20 hardly generates the sound of sucking the air in the closed space from the toilet drainage channel 5. Is excellent in water saving and quietness.

したがって、実施例1の水洗式便器は、便鉢2内の洗浄水の水面を良好に低下させることができる。   Therefore, the flush toilet of Example 1 can satisfactorily reduce the water level of the wash water in the toilet bowl 2.

便鉢内水面低下モードの実行により、便鉢2内の洗浄水の水面が低下した後、リモコンに設けられた洗浄ボタンが操作されると、制御装置30は、便鉢2内の水面を待機時と同じにする便鉢内水面復帰モードを実行し、その後の便器洗浄を良好に行えるようにする。   After the water level in the toilet bowl 2 is lowered by the execution of the toilet bowl water level lowering mode, when the washing button provided on the remote control is operated, the control device 30 waits for the water surface in the toilet bowl 2. The toilet bowl water surface return mode that is the same as the time is executed so that the toilet bowl can be washed well thereafter.

[便鉢内洗浄水増加工程(図5)]
便鉢内水面復帰モードは、図10のV時点からW時点の間において、洗浄水供給装置10の開閉弁を開弁し、ノズル11からリム3を介して便鉢2内に洗浄水を供給する。便鉢2への洗浄水の供給流量は、洗浄水供給装置10の開閉弁が開弁した数秒後には一定流量となる。この一定流量は、後述するサイホン作用が発生した後、便鉢2内の水面Lが流出口4の近傍まで下降した際に便器排水路5を経由して排水接続具50から排水される洗浄水の排水流量と略等しい流量に設定されている。洗浄水供給装置10から便鉢2に洗浄水が供給されると、図5に示すように、便鉢2内の洗浄水の水面Lは上昇位置まで徐々に上昇する。この上昇位置は、上昇流路6の上昇端の開口下部6Aを越えているため、封水部Hから洗浄水が滞留部Rに溢出している。このため、滞留部Rの上流側の水位が上昇し、滞留部Rは確実に水封される。この工程では、吸排気タンク21の隔膜21D及び駆動装置22の隔膜22Dは、下降位置に配置されている。
[Toilet bowl wash water increase process (Figure 5)]
In the toilet bowl water surface return mode, the opening / closing valve of the cleaning water supply device 10 is opened between the time V and the time W in FIG. 10, and the cleaning water is supplied into the toilet bowl 2 from the nozzle 11 via the rim 3. To do. The supply flow rate of the wash water to the toilet bowl 2 becomes a constant flow rate several seconds after the opening / closing valve of the wash water supply device 10 is opened. This constant flow rate is the wash water drained from the drainage connector 50 via the toilet drainage channel 5 when the water surface L in the toilet bowl 2 descends to the vicinity of the outlet 4 after the siphon action described later occurs. The flow rate is set to be approximately equal to the drainage flow rate. When cleaning water is supplied from the cleaning water supply device 10 to the toilet bowl 2, the water level L of the cleaning water in the toilet bowl 2 gradually rises to the rising position as shown in FIG. Since this ascending position exceeds the opening lower part 6A at the ascending end of the ascending flow path 6, the washing water overflows from the sealed water part H to the staying part R. For this reason, the water level upstream of the retention part R rises, and the retention part R is reliably sealed with water. In this step, the diaphragm 21D of the intake / exhaust tank 21 and the diaphragm 22D of the driving device 22 are disposed at the lowered position.

[サイホン発生工程(図6)]
図10のW時点において、便鉢2内の洗浄水の水面Lが上昇位置まで上昇し、図6に示すように、駆動装置22のモーター22Mが回転し、押上板22Aを上方に押し上げ、隔膜22Dを上昇位置に移動させる。これにより、吸排気タンク21の隔膜21Dも上昇位置に移動し、便器排水路5から閉鎖空間の空気を吸引する。この際に生じる負圧力と、便鉢2内の洗浄水の位置エネルギーとの相乗効果により、便鉢2内の洗浄水が旋回しながら勢いよく便器排水路5内に流入し、強力なサイホン作用が発生する。図10に示すように、便鉢2内の洗浄水の水面は、W時点からX時点の間に、急激に流出口4の近傍まで下降する。
[Siphon generation process (Fig. 6)]
At the time point W in FIG. 10, the water level L of the wash water in the toilet bowl 2 rises to the ascending position, and as shown in FIG. 6, the motor 22M of the driving device 22 rotates to push up the push-up plate 22A upward. 22D is moved to the raised position. Thereby, the diaphragm 21 </ b> D of the intake / exhaust tank 21 is also moved to the raised position, and the air in the closed space is sucked from the toilet drainage channel 5. Due to the synergistic effect of the negative pressure generated at this time and the potential energy of the wash water in the toilet bowl 2, the wash water in the toilet bowl 2 flows into the toilet drainage channel 5 vigorously while swirling, and has a powerful siphon action. Will occur. As shown in FIG. 10, the water level of the wash water in the toilet bowl 2 suddenly falls to the vicinity of the outlet 4 between the time point W and the time point X.

サイホン作用は、便鉢2内の洗浄水の位置エネルギーも利用するため、サイホン作用が発生した時点が最も強力であり、便鉢2内の洗浄水の水面Lが下降するに従い弱くなる。このため、便器排水路5を経由して排水接続具50から排水される洗浄水も、水面Lが下降するに従い減少する。上述したように、洗浄水供給装置10から便鉢2へ供給される洗浄水の流量は、便鉢2内の洗浄水の水面Lが流入口4の近傍まで下降した際の排水流量と略等しい流量に設定されているため、X時点で、便鉢2に対する洗浄水の供給流量と排出流量とは均衡する。   Since the siphon action also uses the potential energy of the wash water in the toilet bowl 2, the point in time when the siphon action occurs is the strongest and becomes weaker as the water level L of the wash water in the toilet bowl 2 falls. For this reason, the wash water drained from the drainage connector 50 via the toilet drainage channel 5 also decreases as the water surface L descends. As described above, the flow rate of the wash water supplied from the wash water supply device 10 to the toilet bowl 2 is substantially equal to the drainage flow rate when the water level L of the wash water in the toilet bowl 2 descends to the vicinity of the inflow port 4. Since the flow rate is set, at the time point X, the supply flow rate and the discharge flow rate of the wash water to the toilet bowl 2 are balanced.

[サイホン維持工程(図7)]
図10のX時点からY時点において、吸排気タンク21の隔膜21Dは上昇位置に維持される。また、洗浄水供給装置10から便鉢2へ供給される洗浄水は、X時点から設定時間、一定流量に維持される。これにより、図7に示すように、封水部Hでは、便鉢2内の洗浄水の水面Lの水位Aと便器排水路5の下流端近傍の水位Bとの水位差が維持される。また、溜水部Rでは、便器排水路5の下流端近傍の水位Bと内部配管52の下流口52Cにおける水位Cとの水位差が維持される。このため、便鉢2内の洗浄水の水面Lが流入口4の近傍に維持されながら、サイホン作用が維持される。X時点から設定時間経過後に、洗浄水供給装置10の開閉弁が閉弁され、便鉢2に供給される洗浄水の流量は、徐々に減少する。
[Siphon maintenance process (Fig. 7)]
From the time X to the time Y in FIG. 10, the diaphragm 21D of the intake / exhaust tank 21 is maintained at the raised position. Moreover, the wash water supplied to the toilet bowl 2 from the wash water supply apparatus 10 is maintained at a constant flow rate for a set time from the point X. As a result, as shown in FIG. 7, the water level difference between the water level A of the flush water L in the toilet bowl 2 and the water level B near the downstream end of the toilet drainage channel 5 is maintained in the sealed water portion H. Further, in the water reservoir R, the water level difference between the water level B near the downstream end of the toilet drainage channel 5 and the water level C at the downstream port 52C of the internal pipe 52 is maintained. For this reason, the siphon action is maintained while the water level L of the washing water in the toilet bowl 2 is maintained in the vicinity of the inflow port 4. After a set time has elapsed since time X, the opening / closing valve of the cleaning water supply device 10 is closed, and the flow rate of the cleaning water supplied to the toilet bowl 2 gradually decreases.

[覆水工程(図8)]
図10のY時点からZ時点において、駆動装置22のモーター22Mが回転し、押上板22Aを下方に下降させ、隔膜22Dを下降位置に移動させる。隔膜22Dを上昇位置から下降位置に移動させるのに要する時間は、サイホン発生工程において隔膜22Dを下降位置から上昇位置に移動させるよりも長く設定されている。これにより、吸排気タンク21の隔膜21Dも下降位置に移動し、便器排水路5へ空気を排出する。Y時点で便器排水路5へ空気が排出され始めると、その影響により直ちにサイホン作用は終了する。この際、流出口4から空気が便器排水路5内へ入らないため、サイホン作用の終了の際に破封音は生じない。その後、洗浄水供給装置10から供給される洗浄水により、便鉢2内の洗浄水の水面Lが待機位置に復帰し、覆水が完了する。
[Water-covering process (Fig. 8)]
From the time Y to the time Z in FIG. 10, the motor 22M of the driving device 22 rotates to lower the push-up plate 22A downward and move the diaphragm 22D to the lowered position. The time required to move the diaphragm 22D from the raised position to the lowered position is set to be longer than the time required to move the diaphragm 22D from the lowered position to the raised position in the siphon generation process. Thereby, the diaphragm 21 </ b> D of the intake / exhaust tank 21 is also moved to the lowered position, and air is discharged to the toilet drainage channel 5. When air begins to be discharged into the toilet drainage channel 5 at the time Y, the siphon action is immediately terminated due to the influence. At this time, since the air does not enter the toilet drainage channel 5 from the outlet 4, no breaking sound is generated at the end of the siphon action. Thereafter, the wash water supplied from the wash water supply device 10 returns the water level L of the wash water in the toilet bowl 2 to the standby position, and the water covering is completed.

このように、実施例1の水洗式便器では、制御装置30により便鉢内水面復帰モードが実行されると、通常の便器洗浄と同じように便鉢2内の洗浄水の水面を上昇位置まで上昇させてサイホン作用を発生させ、その後、便鉢2は覆水される。このため、封水部Hや滞留部Rの洗浄水の量及び閉鎖空間の空気の量等を通常の待機時と同じ状態に復帰させることができるため、その後の便器洗浄を良好に行うことができる。   As described above, in the flush toilet of the first embodiment, when the toilet bowl water level return mode is executed by the control device 30, the flush water level in the toilet bowl 2 is raised to the raised position in the same manner as normal toilet flushing. Raise the siphon action to raise the toilet bowl 2 and then cover it. For this reason, since the amount of washing water in the sealed water portion H and the staying portion R, the amount of air in the closed space, and the like can be returned to the same state as during normal standby, subsequent toilet flushing can be performed satisfactorily. it can.

実施例2の水洗式便器は、実施例1と同様の構成を有し、便鉢内水面低下モードにおける洗浄水供給装置10の作動が実施例1の水洗式便器とは相違するのみである。また、便鉢内水面復帰モードは実施例1の水洗式便器と同様である。実施例2の水洗式便器において、便鉢内水面低下モードの洗浄水供給装置10の作動について相違する点を説明する。   The flush toilet of Example 2 has the same configuration as that of Example 1, and the operation of the flush water supply device 10 in the toilet bowl water level lowering mode is only different from the flush toilet of Example 1. Further, the toilet bowl water surface return mode is the same as that of the flush toilet of the first embodiment. In the flush toilet of Example 2, the difference in operation of the flush water supply device 10 in the toilet bowl water level lowering mode will be described.

実施例2の水洗式便器では、図9に示される排水工程前に洗浄水供給装置10が便鉢2に設定量の洗浄水を供給する。排水工程以後は、実施例1の水洗式便器と同様に洗浄水供給装置10は便鉢2に洗浄水を供給しない。このようにすると、排水工程の前に封水部Hから洗浄水が滞留部Rに流出する。このため、滞留部Rの洗浄水が何らかの理由により減少していたり、水封が切れていたりしていても、滞留部Rは確実に水封される。よって、閉鎖空間が確実に形成され、吸排気装置20が便器排水路5から閉鎖空間の空気を吸引すると負圧力が生じ、便鉢2内の洗浄水の水面を確実に低下させることができる。排水工程の前に洗浄水供給装置10が便鉢2に供給する洗浄水の量は、滞留部Rの洗浄水を水封する程度の少量で良く、その際の洗浄水の流水音はほとんど発生しないため、節水性及び静音性に優れている。   In the flush toilet of Example 2, the washing water supply device 10 supplies a set amount of washing water to the toilet bowl 2 before the draining step shown in FIG. After the drainage step, the washing water supply device 10 does not supply washing water to the toilet bowl 2 as in the flush toilet bowl of the first embodiment. If it does in this way, washing water will flow out to seal part R from sealed water part H before a drainage process. For this reason, even if the washing water of the retention part R has decreased for some reason or the water seal has been cut off, the retention part R is reliably sealed with water. Therefore, when the closed space is reliably formed and the intake / exhaust device 20 sucks the air in the closed space from the toilet drainage channel 5, negative pressure is generated, and the water level of the wash water in the toilet bowl 2 can be reliably lowered. The amount of washing water supplied to the toilet bowl 2 by the washing water supply device 10 before the draining process may be small enough to seal the washing water in the staying portion R, and almost no running sound is generated at that time. Therefore, it is excellent in water saving and quietness.

したがって、実施例2の水洗式便器も、便鉢2内の洗浄水の水面を良好に低下させることができる。   Therefore, the flush toilet of Example 2 can also satisfactorily reduce the water level of the wash water in the toilet bowl 2.

以上において、本発明を実施例1及び2に即して説明したが、本発明は上記実施例1及び2に制限されるものではなく、その趣旨を逸脱しない範囲で適宜変更して適用できることはいうまでもない。   In the above, the present invention has been described with reference to the first and second embodiments. However, the present invention is not limited to the first and second embodiments, and can be applied with appropriate modifications without departing from the spirit of the present invention. Needless to say.

例えば、便器本体1は、便鉢2、便器排水路5及び滞留部Rが一体に形成されたものでも良い。
また、吸排気装置20は、吸引タンク21の隔膜21Dを電気駆動により上下動させて、便器排水路5から空気を吸引し、かつ便器排水路5へ空気を排出してもよい。
また、滞留部の洗浄水の上方に、洗浄水の供給により水封可能な隙間が形成され、空気が流通するようにされていてもよい。
また、便鉢内水面低下モードにおいて、吸引タンク21の隔膜21Dの上昇高さを変更することができるようにしてもよい。この場合、便鉢2内の洗浄水の水面Lが低下する幅を変更することができる。
For example, the toilet bowl body 1 may be one in which the toilet bowl 2, the toilet drainage channel 5, and the staying portion R are integrally formed.
The intake / exhaust device 20 may move the diaphragm 21 </ b> D of the suction tank 21 up and down by electric drive to suck air from the toilet drainage channel 5 and discharge air to the toilet drainage channel 5.
Further, a clearance that can be sealed with water by supplying cleaning water may be formed above the cleaning water in the staying portion so that air flows.
Moreover, you may enable it to change the raise height of the diaphragm 21D of the suction tank 21 in the toilet bowl water surface fall mode. In this case, the width | variety which the water surface L of the wash water in the toilet bowl 2 falls can be changed.

実施例1及び2の水洗式便器の待機時を示す模式図である。It is a schematic diagram which shows the time of standby of the flush toilet bowl of Examples 1 and 2. 実施例1及び2の便鉢内水面低下モードにおける排水工程を示す模式図である。It is a schematic diagram which shows the drainage process in the toilet bowl water surface fall mode of Examples 1 and 2. 実施例1及び2の便鉢内水面低下モードにおける安定工程を示す模式図である。It is a schematic diagram which shows the stable process in the toilet bowl water surface fall mode of Examples 1 and 2. 実施例1及び2の便鉢内水面低下モードにおける低下水面形成工程示す模式図である。It is a schematic diagram which shows the fall water surface formation process in the toilet bowl water surface fall mode of Example 1 and 2. 実施例1及び2の便鉢内水面復帰モードにおける便鉢内洗浄水増加工程を示す模式図である。It is a schematic diagram which shows the wash water increase process in the toilet bowl in the toilet bowl water surface return mode of Examples 1 and 2. 実施例1及び2の便鉢内水面復帰モードにおけるサイホン発生工程を示す模式図である。It is a schematic diagram which shows the siphon generation | occurrence | production process in the toilet bowl water surface return mode of Example 1 and 2. 実施例1及び2の便鉢内水面復帰モードにおけるサイホン維持工程を示す模式図である。It is a schematic diagram which shows the siphon maintenance process in the toilet bowl water surface return mode of Examples 1 and 2. 実施例1及び2の便鉢内水面復帰モードにおける覆水工程を示す模式図である。It is a schematic diagram which shows the water covering process in the toilet bowl water surface return mode of Examples 1 and 2. 実施例1の便鉢内水面低下モードを示すタイミングチャートであるである。3 is a timing chart illustrating a toilet bowl water level lowering mode according to the first embodiment. 実施例1及び2の便鉢内水面復帰モードを示すタイミングチャートである。3 is a timing chart showing a toilet bowl water surface return mode of Examples 1 and 2;

符号の説明Explanation of symbols

1…便器本体
2…便鉢
5…便器排水路
10…洗浄水供給装置
20…吸排気装置
30…制御装置
H…封水部
R…滞留部
DESCRIPTION OF SYMBOLS 1 ... Toilet body 2 ... Toilet bowl 5 ... Toilet drain channel 10 ... Washing water supply device 20 ... Intake / exhaust device 30 ... Control device H ... Sealing part R ... Retention part

Claims (5)

便鉢と、該便鉢の下流側に連通し、該便鉢とともに封水部を形成する便器排水路と、該便器排水路の下流側に連通し、洗浄水が滞留する滞留部とを有する便器本体と、
該便鉢に洗浄水を供給する洗浄水供給装置と、
該便器排水路から空気を吸引し、かつ該便器排水路へ空気を排出する吸排気装置と、
該洗浄水供給装置及び該吸排気装置を制御する制御装置とを備えた水洗式便器において、
前記便器排水路には、前記封水部の洗浄水と前記滞留部の洗浄水とにより閉鎖空間が形成され、
前記制御装置は、前記吸排気装置が該便器排水路から該閉鎖空間の空気を吸引する時に、前記洗浄水供給装置が前記便鉢へ洗浄水を供給しない便鉢内水面低下モードを有していることを特徴とする水洗式便器。
It has a toilet bowl, a toilet drainage channel that communicates with the downstream side of the toilet bowl, and forms a sealed water portion with the toilet bowl, and a retention portion that communicates with the downstream side of the toilet drainage channel and in which the wash water stays The toilet body,
A washing water supply device for supplying washing water to the toilet bowl;
An intake / exhaust device for sucking air from the toilet drainage channel and discharging air to the toilet drainage channel;
In the flush toilet equipped with the washing water supply device and a control device for controlling the intake / exhaust device,
In the toilet drainage channel, a closed space is formed by the washing water of the sealed water part and the washing water of the staying part,
The control device has a toilet bowl water surface lowering mode in which the cleaning water supply device does not supply cleaning water to the toilet bowl when the intake / exhaust device sucks air in the closed space from the toilet drainage channel. A flush toilet.
前記滞留部は、前記便鉢内水面低下モードが実行された後も滞留する洗浄水により水封されている請求項1記載の水洗式便器。   The flush toilet according to claim 1, wherein the stay portion is sealed with wash water that stays after the toilet bowl water level lowering mode is executed. 前記便鉢内水面低下モードは、前記吸排気装置が前記便器排水路から前記閉鎖空間の空気を吸引した後に該便器排水路へ空気を排出する請求項1又は2記載の水洗式便器。   The flush toilet according to claim 1 or 2, wherein the toilet bowl water level lowering mode discharges air to the toilet drainage channel after the intake / exhaust device sucks air in the closed space from the toilet drainage channel. 前記制御装置は、前記便鉢内水面低下モードの実行により該便鉢内の水面が低下した後、前記洗浄水供給装置により該便鉢に洗浄水が供給され、該便鉢内の水面が上昇位置まで上昇した後、前記吸排気装置を作動させて前記便器排水路から前記閉鎖空間の空気を吸引し、その後、該洗浄水供給装置の該便鉢への洗浄水の供給を停止し、該吸排気装置が該便器排水路へ空気を排出する便鉢内水面復帰モードを有している請求項1乃至3のいずれか1項記載の水洗式便器。   After the water level in the stool is lowered by execution of the water level lowering mode in the stool, the control device is configured to supply cleaning water to the stool by the cleaning water supply device and to raise the water level in the stool. After rising to the position, the intake and exhaust device is operated to suck the air in the closed space from the toilet drainage channel, and then the supply of the wash water to the toilet bowl of the wash water supply device is stopped, The flush toilet according to any one of claims 1 to 3, wherein the intake / exhaust device has a toilet bowl water surface return mode for discharging air to the toilet drainage channel. 前記便鉢内水面低下モードは、前記吸排気装置が前記便器排水路から前記閉鎖空間の空気を吸引する前に前記洗浄水供給装置を作動させ、前記便鉢に設定量の洗浄水を供給する請求項1乃至4のいずれか1項記載の水洗式便器。   In the toilet bowl water level lowering mode, the washing water supply device is operated before the intake / exhaust device sucks air in the closed space from the toilet drainage channel, and a set amount of washing water is supplied to the toilet bowl. The flush toilet bowl according to any one of claims 1 to 4.
JP2008098978A 2008-04-07 2008-04-07 Flush toilet Expired - Fee Related JP5117261B2 (en)

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