JP7049042B2

JP7049042B2 - Drainage device

Info

Publication number: JP7049042B2
Application number: JP2018086553A
Authority: JP
Inventors: 知久笹川; 和幸青; 恭平上田
Original assignee: 丸一株式会社; 積水ホームテクノ株式会社
Priority date: 2018-04-27
Filing date: 2018-04-27
Publication date: 2022-04-06
Anticipated expiration: 2038-04-27
Also published as: JP2019190194A

Description

本発明は、浴室の排水を行う排水装置に関する。 The present invention relates to a drainage device for draining a bathroom.

一般的に、浴室は、浴槽と、浴槽が載置される浴槽パンと、浴槽パンの横に配置される洗い場パンとから構成される。浴槽は、上部が開口して内部に水を貯留可能な槽であり、通常、内部に水や湯を貯留して入浴者が入浴するために使用される。浴槽パンは、浴槽から万が一水漏れが発生した場合等に、その漏水を受けるための受け台であって、建物内に水が漏れだすことを防ぐ。洗い場パンは、通常、その上で入浴者が身体を洗う等を行う場所である。浴槽パンと洗い場パンとによって浴室の床面が構成される。そして、浴室で生じた排水は、浴槽、浴槽パン、及び洗い場パンのそれぞれの底面に設けられた排水口から、浴槽パン及び洗い場パンの下の床下空間に設置される排水装置を通して、下水等の外部へと排出される。排水装置は、臭気や害虫等が下水等の外部から浴室に入ってこないように、浴室から排出される排水を貯留し、貯留した排水（封水という）によって、浴室側と下水側との通気を遮断する排水トラップを備えている。 Generally, a bathroom is composed of a bathtub, a bathtub pan on which the bathtub is placed, and a washing place pan arranged next to the bathtub pan. A bathtub is a bathtub that has an open upper part and can store water inside, and is usually used for storing water or hot water inside and for a bather to take a bath. The bathtub pan is a cradle for receiving the water leak in the unlikely event that water leaks from the bathtub, and prevents water from leaking into the building. The washing place bread is usually a place where the bather wash his / her body. The floor of the bathroom is composed of the bathtub pan and the washroom pan. Then, the drainage generated in the bathroom is discharged from the drainage outlets provided on the bottoms of the bathtub, the bathtub pan, and the washing place pan, through the drainage device installed in the underfloor space under the bathtub pan and the washing place pan, and the sewage, etc. It is discharged to the outside. The drainage device stores the drainage discharged from the bathroom so that odors and pests do not enter the bathroom from the outside such as sewage, and the stored drainage (called sealing water) ventilates the bathroom side and the sewage side. It is equipped with a drain trap that shuts off.

このような排水装置としては、例えば、本出願人の１人によって以前に提案された特許文献１が既に公知となっており、この排水装置の排水の流れは以下のようになっている。洗い場パン上の排水は、洗い場パンに開口した排水口から洗い場パン排水トラップへと排水され、排出口から下水へと排水される。浴槽パン上の排水は、浴槽パンに開口した排水口からエルボ部内を通過し、洗い場パン排水トラップの下流で洗い場パンの排水流路と合流して下水へと排水される。浴槽内の排水は、浴槽に開口した排水口から浴槽パンの排水流路とは別個の独立した流路としてエルボ部内を通過し、洗い場パン排水トラップの下流で洗い場パン及び浴槽パンの排水流路と合流して下水へと排水される。 As such a drainage device, for example, Patent Document 1 previously proposed by one of the applicants has already been known, and the drainage flow of this drainage device is as follows. The drainage on the washing place pan is drained from the drainage port opened in the washing place pan to the washing place pan drain trap, and drained from the discharge port to the sewage. The drainage on the bathtub pan passes through the elbow portion from the drainage port opened in the bathtub pan, joins the drainage channel of the washroom pan at the downstream of the washroom pan drain trap, and is drained to the sewage. The drainage in the bathtub passes through the elbow from the drainage port opened in the bathtub as a separate flow path from the drainage channel of the bathtub pan, and the drainage channel of the washroom pan and the bathtub pan downstream of the washroom pan drain trap. It merges with and is drained into the sewage.

特開２００５－２３２９３６号公報Japanese Unexamined Patent Publication No. 2005-232936

しかしながら、上記の排水装置は、浴槽、浴槽パン、及び洗い場パンのそれぞれの排水流路が浴槽パン側の上流側から洗い場パン側の下流側へ直列で配列されており、浴槽及び浴槽パンの排水流路は洗い場パン排水トラップの下に配置されていた。排水トラップにおける封水深は所定の高さを確保する必要があり、排水トラップの下に別の排水流路を配置すると、その分、床下空間の高さが高くなってしまうという問題があった。マンション等の多層住宅においては、階層高さを低くするために、床下空間の高さを低くすることが求められる。従来の排水装置において、浴槽及び浴槽パンの排水流路を洗い場パン排水トラップの下ではなく横に通して高さを低くすることも考えられるが、この場合、部材点数が増えて施工性が低下し、また、配管構造も複雑になるので、排水性能が低下するおそれがある。 However, in the above drainage device, the drainage channels of the bathtub, the bathtub pan, and the washing place pan are arranged in series from the upstream side of the bathtub pan side to the downstream side of the washing place pan side, and the drainage of the bathtub and the bathtub pan is performed. The channel was located under the washroom pan drain trap. It is necessary to secure a predetermined height for the sealing depth in the drain trap, and if another drainage channel is arranged under the drain trap, there is a problem that the height of the underfloor space becomes higher by that amount. In multi-story houses such as condominiums, it is required to lower the height of the underfloor space in order to lower the height of the floor. In the conventional drainage device, it is conceivable to pass the drainage channel of the bathtub and the bathtub pan sideways instead of under the washing place pan drain trap to lower the height, but in this case, the number of members increases and the workability deteriorates. However, since the piping structure is complicated, the drainage performance may be deteriorated.

本発明は上記事情に鑑みてなされたものであって、浴室の床下空間の高さを低くすることができ、また、簡素な配管構造で施工性の高い排水装置を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a drainage device having a simple piping structure and high workability, in which the height of the underfloor space of the bathroom can be lowered. ..

上記課題を解決するために本発明に係る排水装置は、浴槽と、浴槽が載置される浴槽パンと、浴槽パンの横に配置される洗い場パンと、を備える浴室の排水装置であって、浴槽からの排水が流入する浴槽排水流入口と、浴槽排水流入口から流入した排水を貯留する浴槽封水部と、浴槽封水部からオーバーフローした排水が流出する浴槽封水流出口とを有する浴槽排水トラップと、浴槽パンからの排水が流入する浴槽パン排水流入口と、浴槽パン排水流入口から流入した排水を貯留する浴槽パン封水部と、浴槽パン封水部からオーバーフローした排水が流出する浴槽パン封水流出口とを有する浴槽パン排水トラップと、洗い場パンからの排水が流入する洗い場パン排水流入口と、洗い場パン排水流入口から流入した排水を貯留する洗い場パン封水部と、洗い場パン封水部からオーバーフローした排水が流出する洗い場パン封水流出口とを有する洗い場パン排水トラップと、長手方向一端側に外部へ排水を排出する排水管に接続される排出口を有し、長手方向他端側が閉塞された、浴槽封水流出口、浴槽パン封水流出口、及び洗い場パン封水流出口から流出した排水が流入する排水筒部と、を備え、排水筒部が、浴槽排水トラップ及び浴槽パン排水トラップと、洗い場パン排水トラップとの間に設けられ、排水筒部の長手方向側面側の一方に浴槽封水流出口及び浴槽パン封水流出口が設けられ、他方に洗い場パン封水流出口が設けられたことを特徴とする。 In order to solve the above problems, the drainage device according to the present invention is a drainage device for a bathroom including a tub, a tub pan on which the tub is placed, and a washing place pan arranged next to the tub pan. A tub drainage having a tub drainage inlet for which drainage from the tub flows in, a tub water seal for storing the drainage flowing in from the tub drainage inlet, and a tub drainage outlet for drainage overflowing from the tub water seal. A trap, a tub pan drainage inlet where drainage from the tub pan flows in, a tub pan water sealing section that stores drainage flowing in from the tub pan drainage inlet, and a tub where overflow drainage flows out from the tub pan drainage section. A bath pan drain trap with a pan sealing water outlet, a washing pan drain inlet where drainage from the washing pan flows in, a washing pan pan sealing section for storing drainage flowing in from the washing pan drain inlet, and a washing pan pan seal. It has a washing place pan drain trap with a washing place pan sealing water outlet for drainage overflowing from the water part, and a drain port connected to a drain pipe for discharging drainage to the outside on one end side in the longitudinal direction, and the other end in the longitudinal direction. It is provided with a tub sealing water outlet, a tub pan sealing outlet, and a drainage cylinder portion through which drainage flowing out from the washing place pan sealing water outlet is closed. A tub pan sealing water outlet and a tub pan sealing water outlet were provided on one side of the drainage tube portion in the longitudinal direction, and a washing basin pan sealing water outlet was provided on the other side. It is characterized by.

さらに、排水筒部の内部に、浴槽封水流出口及び浴槽パン封水流出口から流入した排水の流路である第１通水部と、洗い場パン封水流出口から流入した排水の流路である第２通水部とを隔てる第１隔壁が設けられたことを特徴とする。 Further, inside the drainage cylinder part, the first water passage part which is the flow path of the drainage flowing in from the bathtub sealing water outlet and the bathtub pan sealing water outlet, and the drainage flow path flowing in from the washing place pan sealing water outlet. It is characterized in that a first partition wall separating the two water passage portions is provided.

さらに、第１通水部に、浴槽封水流出口から流入した排水の流路である第３通水部と、浴槽パン封水流出口から流入した排水の流路である第４通水部とを隔てる第２隔壁が設けられ、第２隔壁によって隔てられた第３通水部と第４通水部とが合流する第２合流部は、第１隔壁によって隔てられた第１通水部と第２通水部とが合流する第１合流部より上流側に設けられたことを特徴とする。 Further, in the first water passage part, a third water passage part, which is a flow path of drainage flowing from the tub pan sealing water outlet, and a fourth water passage part, which is a flow path of drainage flowing in from the tub pan sealing water outlet, are provided. A second partition wall is provided, and the second confluence section where the third water flow section and the fourth water flow section separated by the second partition wall meet is the first water flow section and the first water flow section separated by the first partition wall. It is characterized in that it is provided on the upstream side of the first confluence section where the two water passage sections meet.

浴槽パン封水部に貯留できる封水の上限の高さである浴槽パン封水上限が、浴槽封水部に貯留できる封水の上限の高さである浴槽封水上限よりも低いことを特徴とする。 The feature is that the bathtub pan sealing upper limit, which is the upper limit of the sealing water that can be stored in the bathtub pan sealing part, is lower than the bathtub sealing upper limit, which is the upper limit of the sealing water that can be stored in the bathtub sealing part. And.

また、排水筒部は、長手方向の両端が開口した筒状の筒部本体と、筒部本体の長手方向の端部に固定されて排出口を有する排出口部材と、筒部本体の長手方向の端部に固定されて該端部を閉塞する閉塞蓋部材とを有し、排出口部材及び閉塞蓋部材が、筒部本体の長手方向の端部に選択的に取り付け可能であることを特徴とする。 Further, the drainage cylinder portion includes a tubular cylinder body having both ends open in the longitudinal direction, a discharge port member fixed to the end portion of the cylinder body in the longitudinal direction and having a discharge port, and a cylinder portion in the longitudinal direction. It has a closing lid member that is fixed to the end portion of the cylinder and closes the end portion, and the discharge port member and the closing lid member can be selectively attached to the longitudinal end portion of the cylindrical portion main body. And.

本発明に係る排水装置によると、浴槽排水トラップ及び浴槽パン排水トラップと、洗い場パン排水トラップとの間に排出口が設けられているため、浴槽パン側からの排水の流路を洗い場パン側の排水トラップの下に設ける必要が無く、また、配管構造も簡素になるため、床下空間の高さを低くすることができ、また、施工性も向上する。 According to the drainage device according to the present invention, since the drainage port is provided between the tub drain trap and the tub pan drain trap and the washing place pan drain trap, the drainage flow path from the tub pan side is set on the washing place pan side. Since it is not necessary to install it under the drain trap and the piping structure is simplified, the height of the underfloor space can be lowered and the workability is improved.

さらに、排水筒部の内部に、浴槽封水流出口及び浴槽パン封水流出口から流入した排水の流路である第１通水部と、洗い場パン封水流出口から流入した排水の流路である第２通水部とを隔てる第１隔壁が設けられているので、浴槽及び浴槽パン側から洗い場パン側へ、もしくは洗い場パン側から浴槽及び浴槽パン側へ排水が直接流れ込むことを防止できる。 Further, inside the drainage cylinder portion, the first water passage portion, which is the flow path of the drainage flowing from the bathtub sealing water outlet and the bathtub pan sealing water outlet, and the drainage flow path flowing in from the washing place pan sealing water outlet, are the first. Since the first partition partition separating the two water passage portions is provided, it is possible to prevent the drainage from directly flowing from the bathtub and the bathtub pan side to the washing place pan side, or from the washing place pan side to the bathtub and the bathtub pan side.

さらに、第１通水部に、浴槽封水流出口から流入した排水の流路である第３通水部と、浴槽パン封水流出口から流入した排水の流路である第４通水部とを隔てる第２隔壁が設けられており、第２隔壁によって隔てられた第３通水部と第４通水部とが合流する第２合流部は、第１隔壁によって隔てられた第１通水部と第２通水部とが合流する第１合流部より上流側に設けられているので、浴槽からの排水時に排水の流路が負圧になった場合でも、洗い場パン排水トラップ側へその影響が及ぶことを軽減することができる。 Further, in the first water passage part, a third water passage part, which is a flow path of drainage flowing from the tub pan sealing water outlet, and a fourth water passage part, which is a flow path of drainage flowing in from the tub pan sealing water outlet, are provided. A second partition wall is provided, and the second confluence section where the third water flow section and the fourth water flow section separated by the second partition wall meet is the first water flow section separated by the first partition wall. Since it is provided on the upstream side of the first confluence where the water and the second water flow are confluent, even if the drainage flow path becomes negative pressure when draining from the tub, its effect on the washing place pan drain trap side. Can be reduced.

また、浴槽パン封水部に貯留できる封水の上限の高さである浴槽パン封水上限が、浴槽封水部に貯留できる封水の上限の高さである浴槽封水上限よりも低いので、浴槽からの排水時に排水の流路が負圧になり、浴槽パン封水部の封水が引き込まれた場合でも、浴槽からの排水の勢いが弱まった時に浴槽パン封水部へ一部の排水が流れ込むため、浴槽パン排水トラップの破封を防止できる。 In addition, the bathtub pan sealing upper limit, which is the upper limit of the sealing water that can be stored in the bathtub pan sealing section, is lower than the bathtub sealing upper limit, which is the upper limit of the sealing water that can be stored in the bathtub sealing section. Even if the flow path of the drainage becomes negative pressure when draining from the bathtub and the sealing water of the bathtub pan sealing part is drawn in, when the momentum of the drainage from the bathtub weakens, a part of it goes to the bathtub pan sealing part. Since the drainage flows in, it is possible to prevent the bathtub pan drainage trap from being broken.

また、排水筒部は、長手方向の両端が開口した筒状の筒部本体と、筒部本体の長手方向の端部に固定されて排出口を有する排出口部材と、筒部本体の長手方向の端部に固定されて該端部を閉塞する閉塞蓋部材とを有し、排出口部材及び閉塞蓋部材が、筒部本体の長手方向の端部に選択的に取り付け可能なため、筒部本体に取り付けられる排出口部材と閉塞蓋部材とを入れ替えることによって排出口の位置を変更することができる。そのため、排水管の取り回しが簡単になる方を排出口とすることができるので施工性が向上し、また、排水管の長さを短くできるので施工コストを下げることができ、さらに排水管の長さが短くなって取り回しが簡単になって排水管の曲がりが減ることによって排水性能も向上する。また、排出口が排出口部材に備えられているため、排水管の接続部の形状等が異なる場合でも、排出口部材を取り換えることによって対応することができる。 Further, the drainage cylinder portion includes a tubular cylinder body having both ends open in the longitudinal direction, a discharge port member fixed to the end portion of the cylinder body in the longitudinal direction and having a discharge port, and a cylinder portion in the longitudinal direction. The cylinder portion has a closing lid member that is fixed to the end portion of the cylinder and closes the end portion, and the discharge port member and the closing lid member can be selectively attached to the longitudinal end portion of the cylinder portion main body. The position of the discharge port can be changed by exchanging the discharge port member attached to the main body and the closing lid member. Therefore, the drainage pipe can be easily handled as the discharge port, which improves workability, and the length of the drainage pipe can be shortened, so that the construction cost can be reduced, and the length of the drainage pipe can be further reduced. The drainage performance is also improved by shortening the length, making it easier to handle, and reducing the bending of the drainage pipe. Further, since the discharge port is provided in the discharge port member, even if the shape of the connection portion of the drain pipe is different, it can be dealt with by replacing the discharge port member.

本発明の一実施形態に係る排水装置の一例を示す正面図である。（ａ）は排水装置が浴室に取り付けられた様子を示す一部断面正面図である。（ｂ）は排水装置の断面正面図であり、図２のＡ－Ａ’矢視図である。It is a front view which shows an example of the drainage device which concerns on one Embodiment of this invention. (A) is a partial cross-sectional front view showing a state in which the drainage device is attached to the bathroom. (B) is a cross-sectional front view of the drainage device, and is a view taken along the line AA'in FIG. 本発明の一実施形態に係る排水装置の断面平面図であり、図１のＢ－Ｂ’矢視図である。It is a cross-sectional plan view of the drainage device which concerns on one Embodiment of this invention, and is the BB' arrow view of FIG. 本発明の一実施形態に係る排水装置の排水筒部の断面正面図であり、図２のＣ－Ｃ’矢視図である。It is sectional front view of the drainage cylinder part of the drainage apparatus which concerns on one Embodiment of this invention, and is the CC'arrow view of FIG. 本発明の一実施形態に係る排水装置が浴室に取り付けられた様子を示す模式平面図である。It is a schematic plan view which shows the appearance that the drainage device which concerns on one Embodiment of this invention is attached to a bathroom.

本発明に係る排水装置の一実施形態について、以下、図面を参照しつつ説明する。本実施形態に係る排水装置１は、図１（ａ）に示すように、浴槽７と、浴槽７が載置される浴槽パン８と、浴槽パン８の横に配置される洗い場パン９とを備える浴室において、浴槽パン８と洗い場パン９の下の床下空間に設置される。浴室で生じた排水は、排水装置１を経由して下水等の外部へと排出される。 An embodiment of the drainage device according to the present invention will be described below with reference to the drawings. As shown in FIG. 1A, the drainage device 1 according to the present embodiment includes a bathtub 7, a bathtub pan 8 on which the bathtub 7 is placed, and a washing place pan 9 arranged next to the bathtub pan 8. In the bathroom provided, it is installed in the underfloor space under the bathtub pan 8 and the washing place pan 9. The drainage generated in the bathroom is discharged to the outside such as sewage via the drainage device 1.

排水装置１は、図１（ａ）、図１（ｂ）、図２に示すように、浴槽排水トラップ２と、浴槽パン排水トラップ３と、洗い場パン排水トラップ４と、排水筒部５と、を有する。浴槽排水トラップ２及び浴槽パン排水トラップ３は浴槽パン８の下に配置されてそれぞれ排水筒部５に接続されており、洗い場パン排水トラップ４は洗い場パン９の下に配置されて排水筒部５に接続されている。排水筒部５は浴槽パン８と洗い場パン９との境目である堰部の下に配置される。 As shown in FIGS. 1A, 1B, and 2, the drainage device 1 includes a bathtub drainage trap 2, a bathtub pan drainage trap 3, a washing place pan drainage trap 4, a drainage cylinder portion 5, and the drainage device 1. Has. The bathtub drain trap 2 and the bathtub pan drain trap 3 are arranged under the bathtub pan 8 and connected to the drainage cylinder portion 5, respectively, and the washroom pan drainage trap 4 is arranged under the washroom pan 9 and the drainage cylinder portion 5 It is connected to the. The drainage tube portion 5 is arranged under the weir portion which is the boundary between the bathtub pan 8 and the washing place pan 9.

排水筒部５は排出口５０を有し、排出口５０には下水等の外部へと繋がる排水管６が接続される。図４に示すように、浴槽７で生じた排水は、浴槽７の底面に設けられた浴槽排水口７１から浴槽排水トラップ２及び排水筒部５を経由して排出口５０から排水管６へと排出される。浴槽パン８で生じた排水は、浴槽パン８の底面に設けられた浴槽パン排水口８１から浴槽パン排水トラップ３及び排水筒部５を経由して排出口５０から排水管６へと排出される。洗い場パン９で生じた排水は、洗い場パン９の底面に設けられた洗い場パン排水口９１から洗い場パン排水トラップ４及び排水筒部５を経由して排出口５０から排水管６へと排出される。以下、排水装置１の各部について図１（ａ）、図１（ｂ）、図２、及び図３に基づいて、さらに詳細に説明する。 The drainage cylinder portion 5 has a drainage port 50, and a drainage pipe 6 connected to the outside such as sewage is connected to the drainage port 50. As shown in FIG. 4, the drainage generated in the bathtub 7 is discharged from the bathtub drainage port 71 provided on the bottom surface of the bathtub 7 to the drainage pipe 6 from the drainage port 50 via the bathtub drain trap 2 and the drainage cylinder portion 5. It is discharged. The drainage generated in the bathtub pan 8 is discharged from the bathtub pan drainage port 81 provided on the bottom surface of the bathtub pan 8 to the drainage pipe 6 from the discharge port 50 via the bathtub pan drain trap 3 and the drainage cylinder portion 5. .. The drainage generated in the washing place pan 9 is discharged from the washing place pan drainage port 91 provided on the bottom surface of the washing place pan 9 to the drainage pipe 6 from the discharge port 50 via the washing place pan drainage trap 4 and the drainage cylinder portion 5. .. Hereinafter, each part of the drainage device 1 will be described in more detail with reference to FIGS. 1 (a), 1 (b), 2 and 3.

浴槽排水トラップ２は、浴槽排水流入口２１と、浴槽封水部２２と、浴槽封水流出口２３と、を有する。 The bathtub drain trap 2 has a bathtub drainage inlet 21, a bathtub sealing portion 22, and a bathtub sealing water outlet 23.

浴槽封水部２２は、底面と、底面の周縁から略垂直上方に延出する側面と、側面の延出端を閉塞する上面とを有する内部が中空の箱体であり、内部に水を貯留できるようになっている。 The bathtub water sealing portion 22 is a hollow box body having a bottom surface, a side surface extending substantially vertically upward from the peripheral edge of the bottom surface, and an upper surface closing the extending end of the side surface, and stores water inside. You can do it.

浴槽排水流入口２１は、浴槽封水部２２の上面に設けられた開口部の周縁から浴槽封水部２２の底面に対して略垂直下方に延出し、その延出下端が浴槽封水部２２の内部で浴槽封水部２２の底面から一定の距離を隔てた上方の位置となるように設けられた、内部が中空の筒状の部位である。図１（ｂ）に示すように、浴槽排水流入口２１の上端の浴槽封水部２２の上面の開口部には、浴槽排水口７１に接続される浴槽排水管７２が嵌着されており、浴槽７で生じた排水は、浴槽排水口７１及び浴槽排水管７２を通って、浴槽排水流入口２１の下端の開口部から浴槽封水部２２の内部へと流入するようになっている。浴槽排水口７１から浴槽排水流入口２１の下端までの間の排水の流路は水密性が保たれている。 The bathtub drainage inlet 21 extends substantially vertically downward from the peripheral edge of the opening provided on the upper surface of the bathtub water sealing portion 22 with respect to the bottom surface of the bathtub water sealing portion 22, and the lower end of the extension extends downward to the bathtub water sealing portion 22. The inside of the bathtub is a hollow tubular portion provided at an upper position separated from the bottom surface of the bathtub water sealing portion 22 by a certain distance. As shown in FIG. 1 (b), a bathtub drainage pipe 72 connected to the bathtub drainage port 71 is fitted in the opening on the upper surface of the bathtub water sealing portion 22 at the upper end of the bathtub drainage inlet 21. The drainage generated in the bathtub 7 flows into the inside of the bathtub sealing portion 22 from the opening at the lower end of the bathtub drainage inlet 21 through the bathtub drainage port 71 and the bathtub drainage pipe 72. The drainage flow path from the bathtub drainage port 71 to the lower end of the bathtub drainage inlet 21 is kept watertight.

浴槽封水流出口２３は、浴槽封水部２２の側面の上部に設けられた開口部である。浴槽７から排水が流入して浴槽封水部２２の内部の水位が浴槽封水流出口２３の下端の浴槽封水上限２３ａよりも高くなると、浴槽封水流出口２３からオーバーフローして流出する。浴槽封水上限２３ａは、浴槽封水部２２の内部に水が貯留できる上限の高さである。 The bathtub sealing water outlet 23 is an opening provided in the upper part of the side surface of the bathtub sealing portion 22. When the drainage flows from the bathtub 7 and the water level inside the bathtub sealing portion 22 becomes higher than the bathtub sealing upper limit 23a at the lower end of the bathtub sealing water outlet 23, the drainage overflows from the bathtub sealing outlet 23 and flows out. The bathtub water sealing upper limit 23a is the upper limit height at which water can be stored inside the bathtub water sealing portion 22.

通常、浴槽封水部２２には、図１（ｂ）に示すように、浴槽封水上限２３ａまで水が貯留された状態となっている。このとき、浴槽排水流入口２１の下端は、浴槽封水上限２３ａよりも低い位置にあるため、浴槽封水部２２に貯留された水の中に浸かった状態になっている。従って、浴槽７から下水等の外部までの排水の流路において、上流側である浴槽７側の流路と、下流側である下水等の外部側の流路とは、この浴槽封水部２２に貯留された水（封水という）によって通気が遮断された状態となっている。この封水は、下水等の外部からガス、臭気、害虫等が浴槽７、すなわち、室内空間側に侵入することを防ぐ。 Normally, as shown in FIG. 1B, the bathtub sealing portion 22 is in a state where water is stored up to the bathtub sealing upper limit 23a. At this time, since the lower end of the bathtub drainage inlet 21 is located at a position lower than the bathtub water sealing upper limit 23a, it is in a state of being immersed in the water stored in the bathtub water sealing portion 22. Therefore, in the drainage flow path from the bathtub 7 to the outside such as sewage, the flow path on the upstream side of the bathtub 7 and the flow path on the external side such as sewage on the downstream side are the bathtub sealing portion 22. The ventilation is blocked by the water stored in the bathtub (called sealed water). This sealing water prevents gas, odors, pests and the like from entering the bathtub 7, that is, the indoor space side from the outside such as sewage.

封水が、吸出し作用、蒸発、毛管現象等の何らかの理由によって失われ、封水の水面（封水面という）が浴槽排水流入口２１の下端よりも下がり、浴槽排水流入口２１の下端が封水から露出した状態になった場合、浴槽７から下水等の外部までが通気可能な状態となり、封水の機能が失われる（破封という）。従って、封水の機能を果たすのは、封水面が浴槽排水流入口２１の下端から浴槽封水流出口２３の下端、つまり浴槽封水上限２３ａまでの間にある場合である。この封水の機能を果たす高さの幅（浴槽排水流入口２１の下端から浴槽封水上限２３ａまでの垂直距離）を封水深といい、一般的に排水トラップにおいて封水深は５ｃｍ以上１０ｃｍ以下とすることが定められている。このように封水深は、定められた最低の高さ分は確保する必要があるため、浴槽排水流入口２１の下端から浴槽封水部２２の底面までの距離を大きくしすぎると、その分、排水装置１の高さが高くなってしまう。また、小さくしすぎると、浴槽７からの排水速度が遅くなってしまうので、排水速度と高さのバランスを考慮して適宜設計すればよい。本実施形態では、浴槽排水流入口２１の下端から浴槽封水部２２の底面までの距離を１ｃｍ程度としている。 The sealing water is lost for some reason such as suction action, evaporation, capillary phenomenon, etc., the water surface of the sealing water (called the sealing surface) is lower than the lower end of the bathtub drainage inlet 21, and the lower end of the bathtub drainage inlet 21 is the sealing water. When it is exposed from the water, the bathtub 7 to the outside such as sewage can be ventilated, and the function of sealing water is lost (called rupture). Therefore, the function of sealing water is fulfilled when the sealing surface is between the lower end of the bathtub drainage inlet 21 and the lower end of the bathtub sealing water outlet 23, that is, the bathtub sealing upper limit 23a. The width of the height that fulfills this water sealing function (vertical distance from the lower end of the bathtub drainage inlet 21 to the bathtub sealing upper limit 23a) is called the sealing depth, and generally, the sealing depth is 5 cm or more and 10 cm or less in the drain trap. It is stipulated to do. In this way, it is necessary to secure the minimum height of the sealing water, so if the distance from the lower end of the bathtub drainage inlet 21 to the bottom surface of the bathtub sealing portion 22 is made too large, the distance will be increased. The height of the drainage device 1 becomes high. Further, if it is made too small, the drainage speed from the bathtub 7 will be slowed down, so it may be appropriately designed in consideration of the balance between the drainage speed and the height. In the present embodiment, the distance from the lower end of the bathtub drainage inlet 21 to the bottom surface of the bathtub water sealing portion 22 is about 1 cm.

浴槽パン排水トラップ３は、浴槽パン排水流入口３１と、浴槽パン封水部３２と、浴槽パン封水流出口３３と、を有する。浴槽パン排水トラップ３は、下水等の外部からガス、臭気、害虫等が浴槽パン８に侵入することを防ぐ。 The bathtub pan drain trap 3 has a bathtub pan drainage inlet 31, a bathtub pan sealing unit 32, and a bathtub pan sealing water outlet 33. The bathtub pan drain trap 3 prevents gas, odors, pests and the like from entering the bathtub pan 8 from the outside such as sewage.

浴槽パン封水部３２は、底面と、底面の周縁から略垂直上方に延出する側面と、側面の延出端を閉塞する上面とを有する内部が中空で、内部に水を貯留できる箱体である。浴槽パン排水流入口３１は、浴槽パン封水部３２の上面に設けられた開口部の周縁から浴槽パン封水部３２の底面に対して略垂直下方に延出し、その延出下端が浴槽パン封水部３２の内部で浴槽パン封水部３２の底面から一定の距離を隔てた上方の位置となるように設けられた、内部が中空の筒状の部位である。浴槽パン封水流出口３３は、浴槽パン封水部３２の側面の上部に設けられた開口部である。 The bathtub pan water sealing portion 32 has a hollow inside having a bottom surface, a side surface extending substantially vertically upward from the peripheral edge of the bottom surface, and an upper surface that closes the extending end of the side surface, and is a box body capable of storing water inside. Is. The bathtub pan drainage inlet 31 extends substantially vertically downward from the peripheral edge of the opening provided on the upper surface of the bathtub pan water sealing portion 32 with respect to the bottom surface of the bathtub pan water sealing portion 32, and the lower end of the extension extends to the bathtub pan. The inside of the water-sealing portion 32 is a hollow tubular portion provided at an upper position separated from the bottom surface of the bathtub pan water-sealing portion 32 by a certain distance. The bathtub pan sealing water outlet 33 is an opening provided in the upper part of the side surface of the bathtub pan sealing portion 32.

浴槽パン排水流入口３１は、図１（ａ）、図１（ｂ）に示すように、浴槽パン排水管８２を介して浴槽パン排水口８１に接続されており、浴槽パン８上で生じた排水は、浴槽パン排水口８１及び浴槽パン排水管８２を通って、浴槽パン排水流入口３１から浴槽パン封水部３２へと流入するようになっている。浴槽パン排水口８１から浴槽パン排水流入口３１の下端までの間の排水の流路は水密性が保たれている。浴槽パン封水部３２には、浴槽パン封水流出口３３の下端の浴槽パン封水上限３３ａまで封水を貯留することができ、封水面の高さが浴槽パン封水上限３３ａを超えると、浴槽パン封水流出口３３からオーバーフローして流出する。封水面が浴槽パン排水流入口３１の下端より下がると破封となる。図３に示すように、浴槽パン封水上限３３ａは、浴槽封水上限２３ａよりも低い位置となっている。 As shown in FIGS. 1A and 1B, the bathtub pan drainage inlet 31 is connected to the bathtub pan drainage port 81 via the bathtub pan drainage pipe 82, and is generated on the bathtub pan 8. The drainage flows from the bathtub pan drainage inlet 31 to the bathtub pan sealing portion 32 through the bathtub pan drainage port 81 and the bathtub pan drainage pipe 82. The drainage flow path from the bathtub pan drainage port 81 to the lower end of the bathtub pan drainage inlet 31 is kept watertight. The bathtub pan sealing unit 32 can store the sealed water up to the bathtub pan sealing upper limit 33a at the lower end of the bathtub pan sealing water outlet 33, and when the height of the sealing surface exceeds the bathtub pan sealing upper limit 33a, It overflows from the bathtub pan sealing water outlet 33 and flows out. When the sealing surface falls below the lower end of the bathtub pan drainage inlet 31, the sealing is broken. As shown in FIG. 3, the bathtub pan sealing upper limit 33a is lower than the bathtub sealing upper limit 23a.

本実施形態では、図２に示すように、浴槽封水部２２の浴槽封水流出口２３が設けられた側面を除いて、浴槽パン封水部３２が、浴槽封水部２２の側面の周囲を覆うように平面略Ｕ字形状に設けられている。浴槽パン封水流出口３３は、浴槽封水流出口２３が設けられた側面と同じ側の、浴槽パン封水部３２の浴槽封水部２２を挟んだ両側の端部にそれぞれ設けられている。また、浴槽パン封水部３２の浴槽封水部２２を挟んだ両側の底面は、図１（ａ）に示すように、それぞれ浴槽パン封水流出口３３に向かって上向きに傾斜する傾斜部３２ａとなっている。傾斜部３２ａを除く浴槽パン封水部３２の底面は、浴槽封水部２２の底面と略等しい高さとなっており、浴槽排水トラップ２が浴槽パン排水トラップ３の内側に配置されるようにして、浴槽排水トラップ２と浴槽パン排水トラップ３とが一体となるように形成されており、浴槽排水トラップ２及び浴槽パン排水トラップ３の中心を通る底面に垂直な面に対して略面対称となっている。 In the present embodiment, as shown in FIG. 2, the bathtub pan sealing portion 32 surrounds the side surface of the bathtub sealing portion 22 except for the side surface of the bathtub sealing portion 22 provided with the bathtub sealing water outlet 23. It is provided in a substantially U-shaped plane so as to cover it. The bathtub pan sealing water outlet 33 is provided at both ends of the bathtub pan sealing portion 32 sandwiching the bathtub sealing portion 22 on the same side as the side surface where the bathtub sealing water outlet 23 is provided. Further, as shown in FIG. 1A, the bottom surfaces of the bathtub pan sealing portion 32 on both sides of the bathtub sealing portion 22 sandwiching the bathtub sealing portion 22 are inclined portions 32a that incline upward toward the bathtub pan sealing water outlet 33, respectively. It has become. The bottom surface of the bathtub pan sealing portion 32 excluding the inclined portion 32a has a height substantially equal to the bottom surface of the bathtub sealing portion 22, so that the bathtub drain trap 2 is arranged inside the bathtub pan drain trap 3. , The bathtub drain trap 2 and the bathtub pan drain trap 3 are formed to be integrated, and are substantially plane-symmetrical with respect to the plane perpendicular to the bottom surface passing through the center of the bathtub drain trap 2 and the bathtub pan drain trap 3. ing.

また、本実施形態では、図１（ｂ）に示すように、浴槽パン排水流入口３１の下端から浴槽パン封水部３２の底面までの距離の方が、浴槽排水流入口２１の下端から浴槽封水部２２の底面までの距離よりも短くなっている。これによって浴槽パン封水上限３３ａを浴槽封水上限２３ａよりも低くしても浴槽パン封水部３３の封水深を確保できる。本実施形態では、浴槽パン排水流入口３１の下端から浴槽パン封水部３２の底面までの距離は５ｍｍ程度としており、また、浴槽パン封水上限３３ａと浴槽封水上限２３ａとの垂直距離も５ｍｍ程度としている。ここでは浴槽パン排水流入口３１の下端の高さを下げた距離と略同じだけ浴槽パン封水上限３３ａの高さも下げているが、浴槽パン封水部３３の封水深が確保できて浴槽パン封水上限３３ａが浴槽封水上限２３ａよりも低くなっていればよい。 Further, in the present embodiment, as shown in FIG. 1 (b), the distance from the lower end of the bathtub pan drainage inlet 31 to the bottom surface of the bathtub pan water sealing portion 32 is from the lower end of the bathtub drainage inlet 21 to the bathtub. It is shorter than the distance to the bottom surface of the water sealing portion 22. As a result, even if the upper limit of the bathtub pan sealing 33a is lower than the upper limit of the bathtub sealing 23a, the sealing depth of the bathtub pan sealing portion 33 can be secured. In the present embodiment, the distance from the lower end of the bathtub pan drainage inlet 31 to the bottom surface of the bathtub pan sealing portion 32 is about 5 mm, and the vertical distance between the bathtub pan sealing upper limit 33a and the bathtub sealing upper limit 23a is also set. It is about 5 mm. Here, the height of the bathtub pan water sealing upper limit 33a is also lowered by almost the same distance as the height of the lower end of the bathtub pan drainage inlet 31 is lowered, but the water sealing depth of the bathtub pan water sealing portion 33 can be secured and the bathtub pan is sealed. It suffices if the water sealing upper limit 33a is lower than the bathtub water sealing upper limit 23a.

浴槽７は浴槽パン８の上に載置され、排水装置１は浴槽パン８及び洗い場パン９の下の床下空間に設置されるため、浴槽７の浴槽排水口７１から排水装置１の浴槽排水流入口２１に接続される浴槽排水管７２は、浴槽パン８を貫通する必要がある。そのため、図１（ａ）、図１（ｂ）に示すように、浴槽パン８の浴槽パン排水口８１は、浴槽排水管７２の外径よりも大きくなっており、浴槽排水管７２は浴槽パン排水口８１に挿通されることで浴槽パン８を貫通するようになっている。本実施形態では、浴槽排水トラップ２及び浴槽パン排水トラップ３が一体となるように形成されているため、浴槽排水流入口２１の上端の浴槽封水部２２の上面の開口部と、浴槽パン排水流入口３１の上端の浴槽パン封水部３２の上面の開口部とが内側に囲まれるような浴槽封水部２２及び浴槽パン封水部３２の上面から上方に延出する略円筒状の囲い壁を設けて、この囲い壁に内嵌されるようにして浴槽パン排水管８２が取り付けられている。従って、浴槽排水流入口２１の上端の浴槽封水部２２の上面の開口部と、浴槽パン排水流入口３１の上端の浴槽パン封水部３２の上面の開口部とは、浴槽パン排水管８２を構成する管壁の内側に存在する形になっている。浴槽排水管７２は、浴槽パン排水口８１から浴槽パン排水管８２の内側を通って、浴槽排水流入口２１に接続されている。また、浴槽パン排水管８２と囲い壁との間は水密性が保たれており、浴槽パン８上で生じた排水は、浴槽パン排水口８１から浴槽パン排水管８２の内壁と浴槽排水管７２の外壁の間の流路を流れて、浴槽パン排水流入口３１の上端の浴槽パン封水部３２の上面の開口部から浴槽パン排水流入口３１を介して浴槽パン封水部３２へ流れ込む。このように、浴槽７から浴槽排水トラップ２までの流路と、浴槽パン８から浴槽パン排水トラップ３までの流路とは、互いに水密性が保たれた独立した流路となっている。 Since the bathtub 7 is placed on the bathtub pan 8 and the drainage device 1 is installed in the underfloor space under the bathtub pan 8 and the washing place pan 9, the bathtub drainage flow of the drainage device 1 from the bathtub drain port 71 of the bathtub 7 The bathtub drain pipe 72 connected to the inlet 21 needs to penetrate the bathtub pan 8. Therefore, as shown in FIGS. 1A and 1B, the bathtub pan drainage port 81 of the bathtub pan 8 is larger than the outer diameter of the bathtub drainage pipe 72, and the bathtub drainage pipe 72 is the bathtub pan. By being inserted into the drain port 81, it penetrates the bathtub pan 8. In the present embodiment, since the bathtub drain trap 2 and the bathtub pan drain trap 3 are formed to be integrated, the opening on the upper surface of the bathtub sealing portion 22 at the upper end of the bathtub drain inlet 21 and the bathtub pan drainage. A substantially cylindrical enclosure extending upward from the upper surface of the bathtub water sealing portion 22 and the bathtub pan sealing portion 32 so that the opening on the upper surface of the bathtub pan sealing portion 32 at the upper end of the inflow port 31 is surrounded inside. A wall is provided, and the bathtub pan drain pipe 82 is attached so as to be fitted inside the surrounding wall. Therefore, the opening on the upper surface of the bathtub water sealing portion 22 at the upper end of the bathtub drainage inlet 21 and the opening on the upper surface of the bathtub pan water sealing portion 32 at the upper end of the bathtub pan drainage inlet 31 are the bathtub pan drainage pipe 82. It has a shape that exists inside the pipe wall that constitutes. The bathtub drainage pipe 72 is connected to the bathtub drainage inlet 21 from the bathtub pan drainage port 81 through the inside of the bathtub pan drainage pipe 82. Further, watertightness is maintained between the bathtub pan drainage pipe 82 and the enclosure wall, and the drainage generated on the bathtub pan 8 is collected from the bathtub pan drainage port 81 to the inner wall of the bathtub pan drainage pipe 82 and the bathtub drainage pipe 72. It flows through the flow path between the outer walls of the bathtub and flows from the opening on the upper surface of the bathtub pan water sealing portion 32 at the upper end of the bathtub pan drainage inlet 31 to the bathtub pan sealing portion 32 through the bathtub pan drainage inlet 31. As described above, the flow path from the bathtub 7 to the bathtub drain trap 2 and the flow path from the bathtub pan 8 to the bathtub pan drain trap 3 are independent flow paths that are kept watertight with each other.

洗い場パン排水トラップ４は、洗い場パン排水流入口４１と、洗い場パン封水部４２と、洗い場パン封水流出口４３と、を有する。洗い場パン排水トラップ４は、下水等の外部からガス、臭気、害虫等が洗い場パン９、すなわち、室内空間側に侵入することを防ぐ。 The washing place bread drain trap 4 has a washing place bread drainage inlet 41, a washing place bread sealing portion 42, and a washing place bread sealing water outlet 43. The washing place pan drain trap 4 prevents gas, odor, pests and the like from entering the washing place pan 9, that is, the indoor space side from the outside such as sewage.

洗い場パン封水部４２は、底面と、底面の周縁から略垂直上方に延出する側面と、側面の延出端を閉塞する上面とを有する内部が中空で、内部に水を貯留することができる箱体である。洗い場パン排水流入口４１は、洗い場パン封水部４２の上面に設けられた開口部の周縁から洗い場パン封水部４２の底面に対して略垂直下方に延出し、その延出下端が洗い場パン封水部４２の内部で洗い場パン封水部４２の底面から一定の距離を隔てた上方の位置となるように設けられた、内部が中空の筒状の部位である。洗い場パン封水流出口４３は、洗い場パン封水部４２の側面の上部に設けられた開口部である。 The washing place pan water sealing portion 42 has a hollow inside having a bottom surface, a side surface extending substantially vertically upward from the peripheral edge of the bottom surface, and an upper surface closing the extending end of the side surface, and can store water inside. It is a box body that can be made. The washing place pan drainage inlet 41 extends substantially vertically downward from the peripheral edge of the opening provided on the upper surface of the washing place pan water sealing part 42 with respect to the bottom surface of the washing place pan water sealing part 42, and the lower end of the extending extends downward to the washing place pan. The inside of the water-sealing portion 42 is a hollow tubular portion provided so as to be located above the washing place pan water-sealing portion 42 at a certain distance from the bottom surface of the water-sealing portion 42. The washing place pan sealing water outlet 43 is an opening provided in the upper part of the side surface of the washing place bread sealing portion 42.

洗い場パン排水流入口４１は、図１（ａ）、図１（ｂ）に示すように、洗い場パン排水管９２を介して洗い場パン排水口９１に接続されており、洗い場パン９上で生じた排水は、洗い場パン排水口９１及び洗い場パン排水管９２を通って、洗い場パン排水流入口４１から洗い場パン封水部４２へと流入するようになっている。洗い場パン排水口９１から洗い場パン排水流入口４１の下端までの間の排水の流路は水密性が保たれている。洗い場パン封水部４２には、通常、図１（ｂ）に示すように、洗い場パン封水流出口４３の下端の洗い場パン封水上限４３ａまで封水が貯留されており、封水面の高さが洗い場パン封水上限４３ａを超えると、洗い場パン封水流出口４３からオーバーフローして流出する。封水面が洗い場パン排水流入口４１の下端より下がると破封となる。洗い場パン封水部４２の容積は浴槽パン封水部３２の容積よりも大きくなっており、洗い場パン封水部４２に貯留できる封水の容量は浴槽パン封水部３２に貯留できる封水の容量よりも大きくなっている。本実施形態では、洗い場パン排水流入口４１の下端から洗い場パン封水部４２の底面までの距離は浴槽排水トラップ２と略等しく１ｃｍ程度としており、また、洗い場パン封水上限４３ａを浴槽封水上限２３ａと略等しい高さとしているが、洗い場パン９からの排水の流量や封水深等を考慮して適宜設計すればよい。 As shown in FIGS. 1 (a) and 1 (b), the washing place pan drainage inlet 41 is connected to the washing place pan drainage port 91 via the washing place pan drainage pipe 92, and is generated on the washing place pan 9. The drainage flows from the washing place pan drainage inlet 41 to the washing place pan sealing unit 42 through the washing place pan drainage port 91 and the washing place pan drainage pipe 92. The drainage flow path from the washing place pan drainage port 91 to the lower end of the washing place bread drainage inlet 41 is kept watertight. As shown in FIG. 1 (b), the washing place pan sealing portion 42 normally stores the sealing water up to the washing place pan sealing upper limit 43a at the lower end of the washing place bread sealing water outlet 43, and the height of the sealing surface. When the upper limit of the washing place pan sealing water 43a is exceeded, it overflows from the washing place bread sealing water outlet 43 and flows out. When the sealing surface falls below the lower end of the washing place pan drainage inlet 41, the sealing is broken. The volume of the washing place pan water sealing part 42 is larger than the volume of the bath pan water sealing part 32, and the capacity of the sealing water that can be stored in the washing place pan water sealing part 42 is the sealing water that can be stored in the bath pan water sealing part 32. It is larger than the capacity. In the present embodiment, the distance from the lower end of the washing place pan drainage inlet 41 to the bottom surface of the washing place pan water sealing portion 42 is about 1 cm, which is substantially the same as the bath drain trap 2, and the washing place pan sealing upper limit 43a is set to the bath sealing water. Although the height is set to be substantially equal to the upper limit 23a, it may be appropriately designed in consideration of the flow rate of drainage from the washing place pan 9 and the sealing depth.

排水筒部５は、図２に示すように、筒部本体５１と、筒部本体５１の長手方向端部に選択的に取り付け可能な排出口部材５２及び閉塞蓋部材５３と、を有する。筒部本体５１は、内部が中空で長手方向の両端部が開口した筒状部材である。排出口部材５２及び閉塞蓋部材５３は、筒部本体５１の長手方向端部に選択的に取り付け可能となっており、筒部本体５１の長手方向一端側の端部に排出口部材５２が取り付けられる場合には、長手方向他端側の端部には閉塞蓋部材５３が取り付けられる。そして、筒部本体５１の長手方向一端側の端部に閉塞蓋部材５３が取り付けられる場合には、長手方向他端側の端部には排出口部材５２が取り付けられる。排出口部材５２は、下水等の外部に繋がる排水管６が接続される排出口５０を有し、筒部本体５１内の排水は排出口５０から排出される。閉塞蓋部材５３は、閉塞蓋部材５３が取り付けられた側の筒部本体５１の端部からの通気及び通水を遮断する。このような排出口部材５２及び閉塞蓋部材５３を筒部本体５１の長手方向端部に選択的に取り付け可能としていることによって、排水筒部５の排水口５０の位置を排水筒部５の長手方向のどちらかに変更することができる。なお、排水筒部５の排水口５０の位置を決定した後は、排出口部材５２及び閉塞蓋部材５３は、筒部本体５１に接着等によって固定し、排水時等に外れないようにする。本実施形態では、排出口部材５２及び閉塞蓋部材５３を筒部本体５１と別体として構成しているが、筒部本体５１と一体的に構成しても良い。 As shown in FIG. 2, the drainage cylinder portion 5 has a cylinder portion main body 51, a drainage port member 52 that can be selectively attached to a longitudinal end portion of the tubular portion main body 51, and a closing lid member 53. The tubular portion main body 51 is a tubular member having a hollow inside and opening both ends in the longitudinal direction. The discharge port member 52 and the closing lid member 53 can be selectively attached to the longitudinal end portion of the tubular portion main body 51, and the discharge port member 52 is attached to the end portion on one end side in the longitudinal direction of the tubular portion main body 51. If this is the case, the closing lid member 53 is attached to the end on the other end side in the longitudinal direction. When the closing lid member 53 is attached to the end on one end side in the longitudinal direction of the tubular portion main body 51, the discharge port member 52 is attached to the end on the other end side in the longitudinal direction. The drainage port member 52 has a drainage port 50 to which a drainage pipe 6 connected to the outside such as sewage is connected, and drainage in the cylinder portion main body 51 is discharged from the drainage port 50. The closing lid member 53 blocks ventilation and water flow from the end of the tubular portion main body 51 on the side to which the closing lid member 53 is attached. By selectively attaching such a discharge port member 52 and a closing lid member 53 to the longitudinal end portion of the cylinder portion main body 51, the position of the drainage port 50 of the drainage cylinder portion 5 is set to the length of the drainage cylinder portion 5. You can change to either direction. After determining the position of the drainage port 50 of the drainage cylinder portion 5, the discharge port member 52 and the closing lid member 53 are fixed to the cylinder portion main body 51 by adhesive or the like so as not to come off during drainage or the like. In the present embodiment, the discharge port member 52 and the closing lid member 53 are configured as separate bodies from the tubular portion main body 51, but may be integrally configured with the tubular portion main body 51.

排水筒部５は、図１（ａ）に示すように、浴槽パン８と洗い場パン９との境目である堰部の下で略水平に、堰部に沿うようにして排水筒部５の長手方向と堰部とが略平行になるように設けられている。浴槽パン８の下には浴槽排水トラップ２及び浴槽パン排水トラップ３が設けられており、洗い場パン９の下には洗い場パン排水トラップ４が設けられているので、排水筒部５は、浴槽パン排水トラップ２及び浴槽パン排水トラップ３と、洗い場パン排水トラップ４との間に位置する。図２に示すように、筒部本体５１の長手方向側面側の一方（浴槽パン８側）には、浴槽封水流出口２３と浴槽パン封水流出口３３とが設けられ、筒部本体５１の長手方向側面側の他方（洗い場パン９側）には、洗い場パン封水流出口４３が設けられている。浴槽７、浴槽パン８、及び洗い場パン９で生じた排水は、それぞれ浴槽排水トラップ２、浴槽パン排水トラップ３、及び洗い場パン排水トラップ４を経由して排水筒部５に流入し、排出口５０から排出されて、排水管６を通って下水等の外部へと排出される。 As shown in FIG. 1A, the drainage cylinder portion 5 is substantially horizontal under the weir portion which is the boundary between the bath pan 8 and the washing place pan 9, and the length of the drainage cylinder portion 5 is along the weir portion. It is provided so that the direction and the weir portion are substantially parallel to each other. Since the bathtub drain trap 2 and the bathtub pan drain trap 3 are provided under the bathtub pan 8, and the washroom pan drain trap 4 is provided under the washroom pan 9, the drain tube portion 5 is the bathtub pan. It is located between the drain trap 2 and the bathtub pan drain trap 3 and the washing place pan drain trap 4. As shown in FIG. 2, a bathtub sealing water outlet 23 and a bathtub pan sealing water outlet 33 are provided on one side (bathtub pan 8 side) of the tubular portion main body 51 in the longitudinal direction, and the length of the tubular portion main body 51 is long. On the other side (washing place pan 9 side) on the side surface side in the direction, a washing place pan sealing water outlet 43 is provided. The drainage generated in the tub 7, the tub pan 8, and the washing place pan 9 flows into the drain pipe portion 5 via the tub drain trap 2, the tub pan drain trap 3, and the washing place pan drain trap 4, respectively, and flows into the drain pipe portion 50. Is discharged from the water, and is discharged to the outside such as sewage through the drain pipe 6.

筒部本体５１の内部には、図２に示すように、筒部本体５１の長手方向に延伸する第１隔壁５４が設けられている。第１隔壁５４は、浴槽排水トラップ２及び浴槽パン排水トラップ３から筒部本体５１に流入した排水の流路である第１通水部５６と、洗い場パン排水トラップ４から筒部本体５１に流入した排水の流路である第２通水部５７とを隔てる壁である。さらに、第１通水部５６には、筒部本体５１の長手方向に延伸する第２隔壁５５が設けられている。第２隔壁５５は、浴槽排水トラップ２から筒部本体５１に流入した排水の流路である第３通水部５８と、浴槽パン排水トラップ３から筒部本体５１に流入した排水の流路である第４通水部５９とを隔てる壁である。第１通水部５６と第２通水部５７とは、筒部本体５１の内部の、第１隔壁５４の排出口５０側の端部の第１合流部５４ａで合流する。また、第３通水部５８と第４通水部５９とは、筒部本体５１の内部の、第２隔壁５５の排出口５０側の端部の第２合流部５５ａで合流する。そして、第２合流部５５ａは、第１合流部５４ａよりも上流側に設けられている。 As shown in FIG. 2, a first partition wall 54 extending in the longitudinal direction of the tubular portion main body 51 is provided inside the tubular portion main body 51. The first partition wall 54 flows into the cylinder portion main body 51 from the first water passage portion 56, which is a flow path for drainage flowing into the cylinder portion main body 51 from the bathtub drain trap 2 and the bathtub pan drain trap 3, and the washing place pan drain trap 4. It is a wall that separates the second water passage portion 57, which is a flow path for drainage. Further, the first water passage portion 56 is provided with a second partition wall 55 extending in the longitudinal direction of the tubular portion main body 51. The second partition 55 is a third water passage portion 58, which is a flow path for drainage flowing from the bathtub drain trap 2 into the cylinder portion main body 51, and a flow path for drainage flowing from the bathtub pan drain trap 3 into the cylinder portion main body 51. It is a wall that separates a certain fourth water passage part 59. The first water passage portion 56 and the second water passage portion 57 meet at the first junction portion 54a at the end of the first partition wall 54 on the discharge port 50 side inside the cylinder portion main body 51. Further, the third water passage portion 58 and the fourth water passage portion 59 meet at the second merging portion 55a at the end of the second partition wall 55 on the discharge port 50 side inside the tubular portion main body 51. The second merging portion 55a is provided on the upstream side of the first merging portion 54a.

本実施形態では、排出口部材５２及び閉塞蓋部材５３を取り換えることによって排出口５０の位置を変更できるようになっているので、筒部本体５１の両端部で、第１隔壁５４及び第２隔壁５５の、第１合流部５４ａ及び第２合流部５５ａの距離関係は等しくなっており、閉塞蓋部材５３は、その形状に合うように形成され、第１通水部５６、第２通水部５７、第３通水部５８、第４通水部５９をそれぞれ閉塞できるようになっている。 In the present embodiment, since the position of the discharge port 50 can be changed by replacing the discharge port member 52 and the closing lid member 53, the first partition wall 54 and the second partition wall can be changed at both ends of the tubular portion main body 51. The distance relationship between the first merging portion 54a and the second merging portion 55a of 55 is the same, and the closing lid member 53 is formed so as to match the shape of the first merging portion 54a and the second merging portion 55a. 57, the third water passage part 58, and the fourth water passage part 59 can be closed respectively.

筒部本体５１の洗い場パン９側の長手方向側面と第１隔壁５４との間が第２通水部５７、第１隔壁５４と第２隔壁５５との間が第３通水部５８、第２隔壁５５と筒部本体５１の浴槽パン８側の長手方向側面との間が第４通水部５９になっている。 The second water passage portion 57 is between the longitudinal side surface of the cylinder portion 51 on the washing place pan 9 side and the first partition wall 54, and the third water passage portion 58 is between the first partition wall 54 and the second partition wall 55. The fourth water passage portion 59 is formed between the partition wall 55 and the longitudinal side surface of the tubular portion main body 51 on the bath pan 8 side.

浴槽排水トラップ２の浴槽封水流出口２３は、第２隔壁５５の上部に第２隔壁５５の長手方向に長い略矩形状に設けられ、第３通水部５８に対して開口している。そのため、第４通水部５９は、浴槽封水部２２によって分断された形になっている。 The bathtub sealing outlet 23 of the bathtub drain trap 2 is provided on the upper part of the second partition wall 55 in a substantially rectangular shape long in the longitudinal direction of the second partition wall 55, and is open to the third water passage portion 58. Therefore, the fourth water passage portion 59 is divided by the bathtub water sealing portion 22.

浴槽パン排水トラップ３の浴槽パン封水流出口３３は、浴槽封水部２２の両側で、この分断された第４通水部５９にそれぞれ開口するように、筒部本体５１の浴槽パン８側の長手方向側面に設けられている。浴槽パン封水流出口３３の下端は浴槽封水流出口２３の下端よりも低くなるように設けられており、浴槽パン封水上限３３ａは浴槽封水上限２３ａよりも低くなっている。 The bathtub pan sealing water outlets 33 of the bathtub pan drain trap 3 are on both sides of the bathtub sealing portion 22 on the bathtub pan 8 side of the tubular portion main body 51 so as to open into the divided fourth water passage portion 59, respectively. It is provided on the side surface in the longitudinal direction. The lower end of the bathtub pan sealing water outlet 33 is provided so as to be lower than the lower end of the bathtub sealing water outlet 23, and the bathtub pan sealing upper limit 33a is lower than the bathtub sealing upper limit 23a.

第１通水部５６及び第３通水部５８の底面の高さは、筒部本体５１の底面と略等しい高さとなっているが、第４通水部５９の底面は、図３に示すように、浴槽パン封水上限３３ａと略等しい高さとなっており、排水筒部５１の底面よりも高くなっている。また、第４通水部５９の筒部本体５１の長手方向に垂直な断面積は、第３通水部５８の筒部本体５１の長手方向に垂直な断面積よりも小さく、第１通水部５６の筒部本体５１の長手方向に垂直な断面積は、第３通水部５８及び第４通水部５９の筒部本体５１の長手方向に垂直な断面積の和よりも大きくなっている。 The heights of the bottom surfaces of the first water passage portion 56 and the third water passage portion 58 are substantially equal to the bottom surface of the tubular portion main body 51, but the bottom surface of the fourth water passage portion 59 is shown in FIG. As described above, the height is substantially equal to the upper limit of the water filling of the bath pan 33a, which is higher than the bottom surface of the drainage cylinder portion 51. Further, the cross-sectional area of the fourth water passage portion 59 perpendicular to the longitudinal direction of the tubular portion main body 51 is smaller than the cross-sectional area perpendicular to the longitudinal direction of the tubular portion main body 51 of the third water passage portion 58, and the first water passage is performed. The cross-sectional area perpendicular to the longitudinal direction of the tubular portion main body 51 of the portion 56 is larger than the sum of the cross-sectional areas perpendicular to the longitudinal direction of the tubular portion main body 51 of the third water passage portion 58 and the fourth water passage portion 59. There is.

洗い場パン排水トラップ４の洗い場パン封水流出口４３は、筒部本体５１の洗い場パン９側の長手方向側面に設けられ、第２通水部５７に開口している。洗い場パン封水流出口４３の下端は、浴槽封水流出口２３の下端の高さと略等しく、洗い場パン封水上限４３ａと浴槽封水上限２３ａは略等しい高さとなっている。また、第２通水部５７の底面の高さは筒部本体５１の底面の高さと略等しくなっている。 The washing place pan sealing water outlet 43 of the washing place pan drain trap 4 is provided on the longitudinal side surface of the washing place pan 9 side of the tubular portion main body 51, and is open to the second water passage portion 57. The lower end of the washing place pan sealing water outlet 43 is substantially equal to the height of the lower end of the bathtub sealing water outlet 23, and the washing place pan sealing upper limit 43a and the bathtub sealing upper limit 23a are substantially equal in height. Further, the height of the bottom surface of the second water passage portion 57 is substantially equal to the height of the bottom surface of the cylinder portion main body 51.

排水装置１は、排水筒部５の排出口部材５２及び閉塞蓋部材５３を除いて、中心を通る筒部本体５１の長手方向に垂直な面に対して略面対称となっている。 The drainage device 1 is substantially plane-symmetrical with respect to a plane perpendicular to the longitudinal direction of the cylinder portion main body 51 passing through the center, except for the discharge port member 52 and the closing lid member 53 of the drainage cylinder portion 5.

本実施形態では、排水筒部５が堰部の下に配置されるようになっているが、これは、一般的に堰部の下の空間がデッドスペースになっていることが多いためであって、堰部でなくても、浴槽排水トラップ２及び浴槽パン排水トラップ３と、洗い場パン排水トラップ４との間に排水筒部５が配置されていればよい。また、排水口部材５２及び閉塞蓋部材５３を筒部本体５１に取り付けることによって排出口５０の位置を排水筒部５の長手方向両端部のどちらかに変更できるようにしているが、排出口５０の位置の変更が不要な場合等には、排水口部材５２及び閉塞蓋部材５３を用いずに筒部本体５１の長手方向一端側に排出口５０を形成して他端側を閉塞したものを排水筒部５として用いてもよい。また、排水筒部５は略水平になるように設けられているが、これも排出口５０の位置を変更できるようにしているためであって、変更不要な場合等には、排出口５０を設けた側の端部の方がやや下がる下り勾配となるように排水筒部５を設けるようにしてもよい。また、中心を通る筒部本体５１の長手方向に垂直な面に対して略面対称となっており、浴槽排水トラップ２及び浴槽パン排水トラップ３も一体となるように形成されているが、対称な形状になっていなくてもよいし、浴槽排水トラップ２及び浴槽パン排水トラップ３を別々に分離して設けるようにしてもよい。第３通水部５８及び第４通水部５９についても、第２隔壁５５に対して逆の位置になるようにしてもよい。 In the present embodiment, the drainage cylinder portion 5 is arranged under the weir portion, because the space under the weir portion is generally a dead space in many cases. Even if it is not a weir portion, the drainage cylinder portion 5 may be arranged between the bathtub drainage trap 2 and the bathtub pan drainage trap 3 and the washing place pan drainage trap 4. Further, by attaching the drainage port member 52 and the closing lid member 53 to the cylinder portion main body 51, the position of the discharge port 50 can be changed to either of both ends in the longitudinal direction of the drainage cylinder portion 5, but the drainage port 50 When it is not necessary to change the position of the drainage port 50, the drainage port 50 is formed on one end side in the longitudinal direction of the tubular portion main body 51 and the other end side is closed without using the drainage port member 52 and the closing lid member 53. It may be used as a drainage cylinder portion 5. Further, the drainage cylinder portion 5 is provided so as to be substantially horizontal, but this is also because the position of the discharge port 50 can be changed, and when the change is unnecessary, the drainage port 50 may be used. The drainage cylinder portion 5 may be provided so that the end portion on the provided side has a slightly lower downward slope. Further, it is substantially plane-symmetrical with respect to the plane perpendicular to the longitudinal direction of the tubular portion main body 51 passing through the center, and the bathtub drain trap 2 and the bathtub pan drain trap 3 are also formed to be integrated, but are symmetrical. The shape may not be the same, or the bathtub drain trap 2 and the bathtub pan drain trap 3 may be provided separately. The third water passage portion 58 and the fourth water passage portion 59 may also be positioned opposite to the second partition wall 55.

次に、浴室で生じた排水が、本実施形態に係る排水装置１によって下水等の外部へ排出される時の流れについて説明する。 Next, the flow when the drainage generated in the bathroom is discharged to the outside such as sewage by the drainage device 1 according to the present embodiment will be described.

浴槽７で生じた排水は、浴槽排水口７１から浴槽排水管７２を流れ、浴槽排水トラップ２の浴槽排水流入口２１から浴槽封水部２２に流入し、浴槽封水流出口２３から排水筒部５の第３通水部５８に流出し、第２合流部５５ａ、第１通水部５６、第１合流部５４ａを経て、排出口５０から排出され、排出口５０に接続された排水管６を通って下水等の外部へ排出される。 The drainage generated in the tub 7 flows through the tub drain pipe 72 from the tub drain port 71, flows into the tub drainage inlet 21 of the tub drain trap 2, and flows into the tub water seal 22. The drainage pipe 6 which flows out to the third water passage portion 58, is discharged from the discharge port 50 through the second confluence portion 55a, the first water passage portion 56, and the first confluence portion 54a, and is connected to the discharge port 50. It is discharged to the outside such as sewage through it.

浴槽パン８で生じた排水は、浴槽パン排水口８１から浴槽パン排水管８２を流れ、浴槽パン排水トラップ３の浴槽パン排水流入口３１から浴槽パン封水部３２に流入し、浴槽パン封水流出口３３から排水筒部５の第４通水部５９に流出し、第２合流部５５ａ、第１通水部５６、第１合流部５４ａを経て、排出口５０から排出され、排出口５０に接続された排水管６を通って下水等の外部へ排出される。 The drainage generated in the tub pan 8 flows through the tub pan drain pipe 82 from the tub pan drain port 81, flows into the tub pan drainage inlet 31 of the tub pan drain trap 3, and flows into the tub pan sealing unit 32. It flows out from the outlet 33 to the fourth water passage portion 59 of the drainage cylinder portion 5, passes through the second confluence portion 55a, the first water passage portion 56, and the first confluence portion 54a, and is discharged from the discharge port 50 to the discharge port 50. It is discharged to the outside such as sewage through the connected drain pipe 6.

洗い場パン９で生じた排水は、洗い場パン排水口９１から洗い場パン排水管９２を流れ、洗い場パン排水トラップ４の洗い場パン排水流入口４１から洗い場パン封水部４２に流入し、洗い場パン封水流出口４３から排水筒部５の第２通水部５７に流出し、第１合流部５４ａを経て、排出口５０から排出され、排出口５０に接続された排水管６を通って下水等の外部へ排出される。 The drainage generated in the washing place pan 9 flows from the washing place pan drainage port 91 to the washing place pan drainage pipe 92, flows into the washing place pan drainage inlet 41 of the washing place pan drainage trap 4, and flows into the washing place pan water sealing section 42. It flows out from the outlet 43 to the second water passage part 57 of the drainage cylinder part 5, is discharged from the discharge port 50 through the first confluence part 54a, and passes through the drainage pipe 6 connected to the drainage port 50 to the outside of sewage or the like. Is discharged to.

排水筒部５内で、第１通水部５６と第２通水部５７とは第１隔壁５４によって分断されて独立した流路を構成し、また、排水筒部５内の第１通水部５６内で、第３通水部５８と第４通水部５９とは第２隔壁５５によって分断されて独立した流路を構成している。浴槽７からの排水流路と、浴槽パン８からの排水流路とは、浴槽７からの排水が流入する第３通水部５８と、浴槽パン８からの排水が流入する第４通水部５９とが合流する第２合流部５５ａまでは独立した流路となっており、第１通水部５６は浴槽７からの排水と浴槽パン８からの排水との共通の流路となる。第１通水部５６の下流の第１合流部５４ａでは、さらに洗い場パン９からの排水が流入する第２通水部５７が合流し、そこから下流側は全流路の共通の流路となる。洗い場パン９からの排水流路は、第１合流部５４ａまでは独立した流路となっている。第１隔壁５４を構成していることによって、浴槽７からの排水時に洗い場パン９側へ排水が流入するといった逆流が起こらず、また、洗い場パン９からの排水時に浴槽７側及び浴槽パン８側へ排水が流入するといった逆流が起こらないようになっている。 In the drainage cylinder portion 5, the first water passage portion 56 and the second water passage portion 57 are separated by the first partition wall 54 to form an independent flow path, and the first water passage portion in the drainage cylinder portion 5 is formed. In the portion 56, the third water passage portion 58 and the fourth water passage portion 59 are separated by the second partition wall 55 to form an independent flow path. The drainage flow path from the bathtub 7 and the drainage flow path from the bathtub pan 8 are a third water passage section 58 into which the drainage from the bathtub 7 flows in, and a fourth water passage section in which the drainage from the bathtub pan 8 flows in. The second confluence portion 55a where the 59 merges is an independent flow path, and the first water passage portion 56 is a common flow path for the drainage from the bathtub 7 and the drainage from the bathtub pan 8. At the first confluence portion 54a downstream of the first water passage portion 56, the second water passage portion 57 into which the drainage from the washing place pan 9 flows further merges, and the downstream side from there is a common flow path of all the flow paths. Become. The drainage flow path from the washing place pan 9 is an independent flow path up to the first confluence portion 54a. By configuring the first partition wall 54, backflow such as drainage flowing into the washing place pan 9 side when draining from the bathtub 7 does not occur, and when draining from the washing place pan 9, the bathtub 7 side and the bathtub pan 8 side do not occur. Backflow such as drainage flowing into the bathtub does not occur.

浴槽７は、主に、内部に水や湯を貯留して入浴するために使用され、入浴後に不要となった貯留された水が排水となる。従って、浴槽７からの排水は大量であることが多い。浴槽７に水を貯留する際は、浴槽排水口７１に排水栓を装着することによって浴槽排水口７１を閉塞して貯留し、水を排出する際は、浴槽排水口７１に装着された排水栓を取り外すことによって排出する。この時、浴槽排水口７１には大気圧に加えて浴槽７に貯留された水の高さの分の圧力がかかり、排水の流量は大きくなる。このような大流量の排水が排水流路に流れ込んできた場合、排水流路内の空気が排水の流れに引き込まれるようにして下流へと流れるため、排水流路内の空気が失われ、負圧が発生する。 The bathtub 7 is mainly used for storing water or hot water inside for bathing, and the stored water that is no longer needed after bathing becomes drainage. Therefore, the amount of drainage from the bathtub 7 is often large. When storing water in the bathtub 7, the bathtub drainage port 71 is closed and stored by attaching a drainage plug to the bathtub drainage port 71, and when draining water, the drainage plug attached to the bathtub drainage port 71 is used. Drain by removing. At this time, a pressure corresponding to the height of the water stored in the bathtub 7 is applied to the bathtub drainage port 71 in addition to the atmospheric pressure, and the flow rate of the drainage increases. When such a large amount of drainage flows into the drainage channel, the air in the drainage channel is drawn into the drainage channel and flows downstream, so that the air in the drainage channel is lost and negative. Pressure is generated.

浴槽７からの排水時に、浴槽７からの排水流路の下流で負圧が発生すると、浴槽パン８からの排水流路と、洗い場パン９からの排水流路にも負圧の影響が及ぶ。下流側が負圧となっているのに対して、上流の浴槽パン８側及び洗い場パン９側は略大気圧であるため、その圧力差に応じて浴槽パン封水部３２及び洗い場パン封水部４２の封水が下流側に引き込まれる。しかし、このような封水の引き込みが発生した場合、浴槽パン封水部３２の容積は洗い場パン封水部４２の容積よりも小さくなっているため、浴槽パン封水部３２の封水が先に破封する。浴槽パン封水部３２が破封すると、浴槽パン８上の空気が引き込まれ、浴槽パン８からの排水流路を通って第２合流部５５ａで浴槽７からの排水中に空気が混ざり込む。ここで、第２合流部５５ａは第１合流部５４ａよりも上流側に設けられているため、浴槽７からの排水時の負圧は、第２合流部５５ａより下流から第１合流部５４ａまでの間の第１通水部５６内で発生するが、浴槽パン８から吸引された空気が第２合流部５５ａで第１通水部５６内に混ざり込むため、第１合流部５４ａより下流では負圧が解消されている。従って、第１通水部５６内の負圧が第２通水部５７に影響されることがなく、それ以上洗い場パン封水部４２の封水が引き込まれなくなるので、洗い場パン排水トラップ４の破封を防ぐことができる。また、浴槽７からの排水が続いている状態では、浴槽パン８の空気が常に吸引された状態となるので、浴槽７からの排水が浴槽パン８へ逆流することが防止される。 If a negative pressure is generated downstream of the drainage channel from the bathtub 7 when draining from the bathtub 7, the negative pressure also affects the drainage channel from the bathtub pan 8 and the drainage channel from the washing place pan 9. While the downstream side has a negative pressure, the upstream tub pan 8 side and the washing place pan 9 side have a substantially atmospheric pressure, so the tub pan water sealing part 32 and the washing place pan water sealing part according to the pressure difference. The sealed water of 42 is drawn to the downstream side. However, when such water sealing occurs, the volume of the bathtub pan sealing portion 32 is smaller than the volume of the washing place pan sealing portion 42, so that the bathtub pan sealing portion 32 is sealed first. To break the seal. When the bathtub pan sealing portion 32 is broken, the air on the bathtub pan 8 is drawn in, and the air is mixed into the drainage from the bathtub 7 at the second confluence portion 55a through the drainage flow path from the bathtub pan 8. Here, since the second merging portion 55a is provided on the upstream side of the first merging portion 54a, the negative pressure at the time of drainage from the bathtub 7 is from the downstream of the second merging portion 55a to the first merging portion 54a. Although it is generated in the first water passage part 56 between the two, the air sucked from the bathtub pan 8 is mixed in the first water passage part 56 at the second merging part 55a, so that it is downstream from the first merging part 54a. The negative pressure has been eliminated. Therefore, the negative pressure in the first water passage portion 56 is not affected by the second water passage portion 57, and the sealing water of the washing place pan water sealing unit 42 is no longer drawn in. It is possible to prevent the seal from being broken. Further, in the state where the drainage from the bathtub 7 continues, the air in the bathtub pan 8 is always sucked, so that the drainage from the bathtub 7 is prevented from flowing back to the bathtub pan 8.

浴槽７からの排水の勢いが弱まり、負圧が発生しなくなると、浴槽パン８からの空気の吸引が無くなり、また、浴槽パン封水上限３３ａが浴槽封水上限２３ａよりも低くなっているため、浴槽７からの排水の一部が第４通水部５９を通って浴槽パン封水流出口３３から浴槽パン封水部３２へと流れ込む。そのため、浴槽７からの排水時に浴槽パン排水トラップ３が破封しても、浴槽７の排水の完了時には、浴槽パン封水部３２に封水が再び貯留された状態となり、浴槽パン排水トラップ３の破封が防止される。 When the momentum of the drainage from the bathtub 7 weakens and negative pressure is no longer generated, the suction of air from the bathtub pan 8 is lost, and the bathtub pan sealing upper limit 33a is lower than the bathtub sealing upper limit 23a. , A part of the drainage from the bathtub 7 flows into the bathtub pan sealing portion 32 from the bathtub pan sealing water outlet 33 through the fourth water passage portion 59. Therefore, even if the bathtub pan drain trap 3 is broken when draining from the bathtub 7, when the drainage of the bathtub 7 is completed, the sealed water is stored again in the bathtub pan sealing portion 32, and the bathtub pan drain trap 3 is used. The rupture of the seal is prevented.

浴槽パン８は、その上に載置される浴槽７が万が一破損する等して浴槽７から漏れ出た水が床下に漏れることを防ぐために設けられているものであり、通常、浴槽パン８上で排水を生じることはほとんど無く、生じた場合でもごく少量である。従って、浴槽パン８からの排水によって負圧が発生するようなことは無く、浴槽パン８からの排水によって浴槽排水トラップ２や洗い場パン排水トラップ４が破封することは少ない。 The bathtub pan 8 is provided to prevent water leaking from the bathtub 7 from leaking under the floor due to accidental damage to the bathtub 7 placed on the bathtub pan 8, and is usually provided on the bathtub pan 8. Almost no drainage is generated, and even if it is generated, it is very small. Therefore, the drainage from the bathtub pan 8 does not generate a negative pressure, and the drainage from the bathtub pan 8 rarely breaks the bathtub drain trap 2 and the washing place pan drain trap 4.

洗い場パン９は、通常、入浴者が身体を洗う等を行う場所であり、洗い場パン９に水が貯留されることはほとんど無く、シャワーや掛け湯等によって洗い場パン９で使用した水がそのまま排水されることになり、浴槽７からの排水ほど流量が大きくならない。従って、洗い場パン９からの排水によって浴槽７からの排水時のような負圧が発生することは無く、浴槽排水トラップ２や浴槽パン排水トラップ３が破封することは少ない。 The washing place pan 9 is usually a place where a bather washes his / her body, and water is rarely stored in the washing place pan 9, and the water used in the washing place pan 9 is drained as it is by a shower or a hot water bath. The flow rate is not as large as the drainage from the bathtub 7. Therefore, the drainage from the washing place pan 9 does not generate a negative pressure as in the case of drainage from the bathtub 7, and the bathtub drain trap 2 and the bathtub pan drain trap 3 are rarely broken.

上記はあくまで本発明に係る排水装置の一実施形態を示したものであるため、本発明の思想を逸脱しない範囲で適宜変更可能である。 Since the above is only an embodiment of the drainage device according to the present invention, it can be appropriately changed without departing from the idea of the present invention.

１排水装置２浴槽排水トラップ
２１浴槽排水流入口２２浴槽封水部
２３浴槽封水流出口２３ａ浴槽封水上限
３浴槽パン排水トラップ３１浴槽パン排水流入口
３２浴槽パン封水部３３浴槽パン封水流出口
３３ａ浴槽パン封水上限４洗い場パン排水トラップ
４１洗い場パン排水流入口４２洗い場パン封水部
４３洗い場パン封水流出口４３ａ洗い場パン封水上限
５排水筒部５０排出口
５１筒部本体５２排出口部材
５３閉塞蓋部材５４第１隔壁
５４ａ第１合流部５５第２隔壁
５５ａ第２合流部５６第１通水部
５７第２通水部５８第３通水部
５９第４通水部６排水管
７浴槽８浴槽パン
９洗い場パン 1 Drainage device 2 Drainage trap 21 Drainage trap 21 Drainage outlet 22 Drainage inlet 23 Drainage outlet 23a Drainage upper limit 3 Drainage trap 31 Drainage trap 31 Drainage pan drainage inlet 32 Drainage pan drainage outlet 33 Drainage outlet 33a Bath pan water seal upper limit 4 Washing place pan drainage trap 41 Washing place pan drainage inlet 42 Washing place pan water sealing part 43 Washing place pan water sealing outlet 43a Washing place pan water sealing upper limit 5 Drainage cylinder part 50 Drainage port 51 Cylinder body 52 Discharge port member 53 Closing lid member 54 1st partition 54a 1st confluence 55 2nd confluence 55a 2nd confluence 56 1st water flow part 57 2nd water flow part 58 3rd water flow part 59 4th water flow part 6 Drainage pipe 7 Drainage 8 Drainage pan 9 Washroom pan

Claims

浴槽と、前記浴槽が載置される浴槽パンと、前記浴槽パンの横に配置される洗い場パンと、を備える浴室の排水装置であって、
前記浴槽からの排水が流入する浴槽排水流入口と、前記浴槽排水流入口から流入した排水を貯留する浴槽封水部と、前記浴槽封水部からオーバーフローした排水が流出する浴槽封水流出口とを有する浴槽排水トラップと、
前記浴槽パンからの排水が流入する浴槽パン排水流入口と、前記浴槽パン排水流入口から流入した排水を貯留する浴槽パン封水部と、前記浴槽パン封水部からオーバーフローした排水が流出する浴槽パン封水流出口とを有する浴槽パン排水トラップと、
前記洗い場パンからの排水が流入する洗い場パン排水流入口と、前記洗い場パン排水流入口から流入した排水を貯留する洗い場パン封水部と、前記洗い場パン封水部からオーバーフローした排水が流出する洗い場パン封水流出口とを有する洗い場パン排水トラップと、
長手方向一端側に外部へ排水を排出する排水管に接続される排出口を有し、長手方向他端側が閉塞された、前記浴槽封水流出口、前記浴槽パン封水流出口、及び前記洗い場パン封水流出口から流出した排水が流入する排水筒部と、
を備え、
前記排水筒部が、前記浴槽排水トラップ及び前記浴槽パン排水トラップと、前記洗い場パン排水トラップとの間に設けられ、
前記排水筒部の長手方向側面側の一方に前記浴槽封水流出口及び前記浴槽パン封水流出口が設けられ、他方に前記洗い場パン封水流出口が設けられたことを特徴とする排水装置。 A bathroom drainage device comprising a bathtub, a bathtub pan on which the bathtub is placed, and a washroom pan arranged next to the bathtub pan.
A bathtub drainage inlet into which drainage from the bathtub flows in, a bathtub sealing section for storing drainage flowing in from the bathtub drainage inlet, and a bathtub sealing outlet in which drainage overflowing from the bathtub sealing section flows out. With a bathtub drain trap and
A bathtub pan drainage inlet into which drainage from the bathtub pan flows in, a bathtub pan water sealing section for storing drainage flowing in from the bathtub pan drainage inlet, and a bathtub in which drainage overflowing from the bathtub pan drainage section flows out. Bathtub pan drain trap with pan seal water outlet, and
The washing place pan drainage inlet where the drainage from the washing place pan flows in, the washing place bread sealing part which stores the drainage flowing in from the washing place bread drainage inlet, and the washing place where the drainage overflowing from the washing place bread sealing part flows out. Washing area with a pan seal water outlet and a pan drain trap,
The bathtub sealing water outlet, the bathtub pan sealing water outlet, and the washing place pan sealing, which have an outlet connected to a drain pipe for discharging drainage to the outside on one end side in the longitudinal direction and are closed on the other end side in the longitudinal direction. The drainage pipe part where the drainage that flows out from the water outlet flows in, and
Equipped with
The drainage cylinder portion is provided between the bathtub drainage trap, the bathtub pan drainage trap, and the washing place pan drainage trap.
A drainage device characterized in that the bathtub sealing water outlet and the bathtub pan sealing water outlet are provided on one side of the drainage cylinder portion in the longitudinal direction, and the washing place pan sealing water outlet is provided on the other side.

前記排水筒部の内部に、前記浴槽封水流出口及び前記浴槽パン封水流出口から流入した排水の流路である第１通水部と、前記洗い場パン封水流出口から流入した排水の流路である第２通水部とを隔てる第１隔壁が設けられたことを特徴とする請求項１に記載の排水装置。 Inside the drainage cylinder portion, the first water passage portion, which is the flow path of the drainage flowing from the bathtub sealing water outlet and the bathtub pan sealing water outlet, and the drainage flow path flowing from the washing place pan sealing water outlet. The drainage device according to claim 1, wherein a first partition wall separating the second water passage portion is provided.

前記第１通水部に、前記浴槽封水流出口から流入した排水の流路である第３通水部と、前記浴槽パン封水流出口から流入した排水の流路である第４通水部とを隔てる第２隔壁が設けられ、
前記第２隔壁によって隔てられた前記第３通水部と前記第４通水部とが合流する第２合流部は、前記第１隔壁によって隔てられた前記第１通水部と前記第２通水部とが合流する第１合流部より上流側に設けられたことを特徴とする請求項２に記載の排水装置。 In the first water passage part, a third water passage part which is a flow path of drainage flowing from the bathtub sealing water outlet and a fourth water passage part which is a flow path of drainage flowing in from the bathtub pan sealing water outlet. A second partition wall is provided to separate the water from the water.
The second confluence portion where the third water passage portion and the fourth water passage portion joined by the second partition wall is the first water passage portion and the second water passage portion separated by the first partition wall. The drainage device according to claim 2, wherein the drainage device is provided on the upstream side of the first confluence portion where the water portion confluences.

前記浴槽パン封水部に貯留できる封水の上限の高さである浴槽パン封水上限が、前記浴槽封水部に貯留できる封水の上限の高さである浴槽封水上限よりも低いことを特徴とする請求項１から３のいずれか一項に記載の排水装置。 The bathtub pan sealing upper limit, which is the upper limit of the sealing water that can be stored in the bathtub pan sealing portion, is lower than the bathtub sealing upper limit, which is the upper limit of the sealing water that can be stored in the bathtub sealing portion. The drainage device according to any one of claims 1 to 3, wherein the drainage device is characterized.

前記排水筒部は、長手方向の両端が開口した筒状の筒部本体と、前記筒部本体の長手方向の端部に固定されて前記排出口を有する排出口部材と、前記筒部本体の長手方向の端部に固定されて該端部を閉塞する閉塞蓋部材とを有し、
前記排出口部材及び前記閉塞蓋部材が、前記筒部本体の長手方向の端部に選択的に取り付け可能であることを特徴とする請求項１から４のいずれか一項に記載の排水装置。 The drainage cylinder portion includes a cylindrical cylinder portion body having both ends opened in the longitudinal direction, a drainage port member fixed to the longitudinal end portion of the cylinder portion main body and having the discharge port, and the cylinder portion main body. It has a closing lid member that is fixed to an end in the longitudinal direction and closes the end.
The drainage device according to any one of claims 1 to 4, wherein the discharge port member and the closing lid member can be selectively attached to the longitudinal end portion of the tubular portion main body.