JP4689080B2

JP4689080B2 - Circulation fitting for nonpolar bathtub

Info

Publication number: JP4689080B2
Application number: JP2001169617A
Authority: JP
Inventors: 勝広樋高; 靖彦鈴木; 秀人黒崎
Original assignee: 橋本金属工業株式会社
Priority date: 2001-06-05
Filing date: 2001-06-05
Publication date: 2011-05-25
Anticipated expiration: 2021-06-05
Also published as: JP2002364932A

Description

【０００１】
【発明の属する技術分野】
この発明は、浴槽の側壁に取り付け、温湯を外部の加熱器を介して循環させる配管を浴槽に接続するために用いる無極性浴槽用循環金具に関する。
【０００２】
【従来の技術】
浴槽の側壁に取り付け、外部の加熱器を介して温湯を循環させるための浴槽用循環金具において、循環口本体の前面に吸入用開口と、周囲に吐出用開口を設けた構造では、加熱器の吸入用配管を吸入用開口と接続し、同じく吐出用配管を吐出用開口と接続しなければならないという、接続に対する極性がある。
【０００３】
しかし、浴槽用循環金具と加熱器の接続を行う現場では、接続に対する極性があると、不注意から配管の接続を間違うことが往々にしてあり、配管を逆に接続すると、循環口本体の前面から温度の高い温湯が吐出され、入浴時に火傷の危険を伴うことになる。
【０００４】
そこで、上記のような配管の接続ミスを防ぐためには、浴槽用循環金具の無極性化が有効な手段となる。
【０００５】
図５は、従来の無極性浴槽用循環金具の構造を模式的に示し、浴槽１の側壁２に設けた貫通孔３を挟んで、内側に循環口本体４と外側に外部ケース５を水密状に固定し、循環口本体４と外部ケース５の内部を内側通路６と外側通路７に分離し、上記循環口本体４の周囲で左右両側下部の位置に、内側通路６と連通する吸入兼吐出用開口８と、外側通路７と連通する吸入兼吐出用開口９をそれぞれ設け、外部ケース５に、内側通路６と連通した接続管１０と外側通路７と連通した接続管１１を設けた構造になっている。
【０００６】
このような浴槽用循環金具は、加熱器の吸入用配管と吐出用配管をどちらの接続管に接続してもよく、何れか一方の吸入兼吐出用開口８又は９が温湯を吸入し、他方の吸入兼吐出用開口８又は９が温湯を吐出することなる。
【０００７】
図６と図７は、従来の無極性浴槽用循環金具の他の構造を模式的に示し、上記図５の例と同一部分は同一符号を用いる。
【０００８】
循環口本体４の前面に吸入用開口１２と、周囲の左右両側下部の位置に第１と第２の吐出用開口１３、１４を設け、上記循環口本体４の内部に、内側通路６を吸入用開口１２と第１の吐出用開口１３に接続する第１の温湯通路１５と、外側通路７を吸入用開口１２と第２の吐出用開口１４に接続する第２の温湯通路１６を設け、上記第１の温湯通路の途中には、吸入用開口１２に対して内側通路６寄りの部分に、吸入用開口１２から第１の温湯通路１５への温湯の流入を許容する逆止弁１７と、第１の吐出用開口１３の部分に、第１の温湯通路１５から第１の吐出用開口１３への温湯の流出を許容する逆止弁１８が設けてある。
【０００９】
更に、第２の温湯通路１６の途中には、吸入用開口１２に対して外側通路７寄りの部分に、吸入用開口１２から第２の温湯通路１６への温湯の流入を許容する逆止弁１９と、第２の吐出用開口１４の部分に第２の温湯通路１６から第２の吐出用開口１４への温湯の流出を許容する逆止弁２０が設けてある。
【００１０】
この無極性浴槽用循環金具においては、加熱器の吸入用配管と他方に吐出用配管をどちらの接続管１０、１１に接続してもよい無極性となり、図６は、加熱器の吸入用配管を内側通路６に接続し、加熱器の吐出用配管を外側通路７に接続した状態の温湯の流れを示している。
【００１１】
同図において、矢印で示すように、浴槽の温湯は吸入用開口１２から流入し、逆止弁１７を押し開いて第１の温湯通路１５から内側通路６に流出し、逆止弁１８は閉弁している。
【００１２】
また、加熱器からの温湯は、外側通路７から第２の温湯通路１６に入り、逆止弁２０を押し開いて第２の吐出用開口１４から浴槽に吐出する。このとき、逆止弁１９は閉弁している。
【００１３】
図７は、加熱器の吸入用配管を外側通路７に接続し、加熱器の吐出用配管を内側通路６に接続した状態の温湯の流れを示し、同図において、矢印で示すように、浴槽の温湯は吸入用開口１２から流入し、逆止弁１９を押し開いて第２の温湯通路１６から外側通路７に流出し、逆止弁２０は閉弁している。
【００１４】
また、加熱器からの温湯は、内側通路６から第１の温湯通路１５に入り、逆止弁１８を押し開いて第１の吐出用開口１３から浴槽に吐出する。このとき、逆止弁１７は閉弁している。
【００１５】
【発明が解決しようとする課題】
ところで、上記した何れの無極性浴槽用循環金具においても、配管接続時の無極性を達成することはできるが、浴槽への温湯の吐出が左右何れか片方の開口からしか得られず、このため、浴槽の温湯の沸き上がり温度にバラツキが出やすいと共に、片方の開口からでる構造では浴槽に吐出される温湯の温度が局部的に熱くなり、入浴中の追い焚き時に火傷のおそれがあるという問題がある。
【００１６】
そこで、この発明の課題は、浴槽への温湯の吐出が左右両側の開口から行え、浴槽の温湯の沸き上がり温度にバラツキが出ないと共に、入浴中の追い焚き時に火傷のおそれがない無極性浴槽用循環金具を提供することにある。
【００１７】
【課題を解決するための手段】
上記のような課題を解決するため、この発明は、浴槽の側壁に貫通固定され、外部の加熱器と浴槽内との温湯循環を行わせる無極性浴槽用循環金具において、浴槽の側壁に設けた貫通孔に固定されるスリーブの先端に、前面に第１と第２の吸入用開口と、周囲に第１の吐出用開口と第２の吐出用開口を有する循環口本体を固定し、上記スリーブの内部に加熱器と接続される内側通路と外側通路を分離して設け、上記循環口本体の内部に、内側通路を第１の吸入用開口と第１の吐出用開口に接続する第１の温湯通路と、外側通路を第２の吸入用開口と第２の吐出用開口に接続する第２の温湯通路を設け、上記第１の温湯通路には、第１の吸入用開口の部分に、第１の吸入用開口から第１の温湯通路への温湯の流入を許容する逆止弁と、第１の吐出用開口の手前に第１の温湯通路から第１の吐出用開口への温湯の流出を許容する逆止弁を設け、更に、第２の温湯通路には、第２の吸入用開口の部分に、第２の吸入用開口から第２の温湯通路への温湯の流入を許容する逆止弁と、第２の吐出用開口の手前に第２の温湯通路から第２の吐出用開口への温湯の流出を許容する逆止弁を設け、上記第１と第２の両吐出用開口をそれぞれの逆止弁より下流側の位置で互いに連通させた構成を採用したものである。
【００１８】
上記内側通路と外側通路に対する加熱器の吸入用配管と吐出用配管の接続において、吸入用配管と吐出用配管を何れの側に接続しても、合計四個の逆止弁の作用により、第１の吸入用開口と第２の吸入用開口の何れから浴槽内の温湯を吸入し、第１の吐出用開口と第２の吐出用開口の両方から加熱器の温湯が吐出し、配管接続時の無極性が得られる。
【００１９】
【発明の実施の形態】
以下、この発明の実施の形態を図１乃至図４に示す図示例と共に説明する。
【００２０】
図１と図２のように、無極性浴槽用循環金具３１は、浴槽１の側壁２に設けた貫通孔３に挿通されるスリーブ３２と、このスリーブ３２の浴槽内側先端に設けた循環口本体３３と、上記スリーブ３２の浴槽外に突出する部分に外嵌状に取り付けられる外部ケース３４とを有している。
【００２１】
上記スリーブ３２は、合成樹脂製であり、貫通孔３に挿通する円筒部３５の先端外周にフランジ３６を設けて形成され、フランジ３６に接するようにパッキング３７が円筒部３５に挿入されている。また、外部ケース３４は、スリーブ３２の円筒部３５に外嵌螺合し、その先端フランジ３８をパッキング３９で覆い、スリーブ３２に対してねじ込んで浴槽１の側壁２をパッキング３７と３９で挟むことにより、スリーブ３２と外部ケース３４は浴槽１の側壁２に水密状に固定される。
【００２２】
上記スリーブ３２の内部には、循環口本体３３に設けた筒状の仕切り壁４０が同軸心の配置で位置し、外部ケース３４の内部に突設した接続筒４１がこの仕切り壁４０内に水密状に嵌合して接続され、スリーブ３２の内部を、仕切り壁４０と接続筒４１の内部に位置する内側通路４２と、スリーブ３２の内周と仕切り壁４０の外周の間の外側通路４３に分離していると共に、外部ケース３４に、内側通路４２と連通した接続管４４と外側通路４３と連通した接続管４５が設けられている。
【００２３】
前記循環口本体３３は、合成樹脂を用い、内部が中空の偏平な円形ケースに形成され、後部の中央に仕切り壁４０が突設され、この循環口本体３３の外部に金属製のフイルターキャップ４６が外嵌固定されている。
【００２４】
図３と図４のように、この循環口本体３３の前壁には第１の吸入用開口４７と第２の吸入用開口４８が設けられ、周壁の左右の下部両側に、第１の吐出用開口４９と第２の吐出用開口５０が設けられ、循環口本体３３の内部は、内側通路４２を第１の吸入用開口４７と第１の吐出用開口４９に接続する第１の温湯通路５１と、外側通路４３を第２の吸入用開口４８と第２の吐出用開口５０に接続する第２の温湯通路５２が水密状に区画形成されている。
【００２５】
なお、循環口本体３３に外嵌した金属製のフイルターキャップ４６は、図２のように、前面に設けた開口５３にフイルター５４が張設され、周囲には第１の吸入用開口４９と第２の吸入用開口５０に一致する開口４９ａと５０ａが設けられている。
【００２６】
上記第１の温湯通路５１の途中で第１の吸入用開口４７寄りの部分に、第１の吸入用開口４７から第１の温湯通路５１への温湯の流入を許容する逆止弁５５と、第１の吐出用開口４９の手前に第１の温湯通路５１から第１の吐出用開口４９への温湯の流出を許容する逆止弁５６が設けられ、更に、第２の温湯通路５２の途中で第２の吸入用開口４８寄りの部分に、第２の吸入用開口４８から第２の温湯通路５２への温湯の流入を許容する逆止弁５７と、第２の吐出用開口５０の手前に第２の温湯通路５２から第２の吐出用開口５０への温湯の流出を許容する逆止弁５８が設けられている。
【００２７】
また、第１の温湯通路５１と第２の温湯通路５２は、循環口本体３３に設けた連通路５９により、両吐出用開口４９、５０の逆止弁５６、５８の下流側で互いに連通し、これにより、両吐出用開口４９、５０は連通路５９により、それぞれの逆止弁５６、５８より下流側で互いに接続され、第１と第２の温湯通路５１と５２の何れか一方から出てきた温湯を連通路５９で両吐出用開口４９、５０の両方に振り分けて浴槽内に吐出させるようになっている。
【００２８】
この発明の無極性浴槽用循環金具は、上記のような構成であり、浴槽１の側壁２に取り付けた状態で外部ケース３４の接続管４４、４５と、浴槽１の外部に設置された加熱器の吸入用配管と吐出用配管を接続する。このとき、加熱器の吸入用配管と吐出用配管を両接続管４４、４５の何れの側に接続してもよい。
【００２９】
図３は、内側通路４２の接続管４４に加熱器の吸入用配管を接続し、外側通路４３の接続管４５に加熱器の吐出用配管を接続した場合の温湯の流れを示している。
【００３０】
加熱器を点火することで、吐出用配管から接続管４５を介して外側通路４３に流入した温湯は、第２の温湯通路５２に流入し、この第２の温湯通路５２に位置する第２の吸入用開口４８の逆止弁５７は水圧で閉弁し、第２の吐出用開口５０の逆止弁５８は水圧で開弁することになり、従って、第２の温湯通路５２の温湯は、逆止弁５８を通り、連通路５９で両吐出用開口４９、５０の両方に振り分けられて左右の下部両側から浴槽１内に吐出する。
【００３１】
また、吸入用配管に作用する吸引力で内側通路４２から第１の温湯通路５１内が吸引され、第１の温湯通路５１に位置する第１の吸入用開口４７の逆止弁５５は開弁し、第１の吐出用開口４９の逆止弁５６は閉弁することで、浴槽内の温湯は、第１の吸入用開口４７から第１の温湯通路５１内に流入し、内側通路４２から接続管４４を介して加熱器の吸入用配管に流出し、これにより、浴槽１内の温湯は循環して温度が上昇することになる。
【００３２】
図４は、外側通路４３の接続管４５に加熱器の吸入用配管を接続し、内側通路４２の接続管４４に加熱器の吐出用配管を接続した場合の温湯の流れを示している。
【００３３】
加熱器を点火することで、吐出用配管から接続管４４を介して内側通路４２に流入した温湯は、第１の温湯通路５１に流入し、この第１の温湯通路５１に位置する第１の吸入用開口４７の逆止弁５５は水圧で閉弁し、第１の吐出用開口４９の逆止弁５６は水圧で開弁することになり、従って、第１の温湯通路５１の温湯は、逆止弁５６を通り、連通路５９で両吐出用開口４９、５０の両方に振り分けられて左右の下部両側から浴槽内に吐出する。
【００３４】
また、吸入用配管に作用する吸引力で外側通路４３から第２の温湯通路５２内が吸引され、第２の温湯通路５２に位置する第２の吸入用開口４８の逆止弁５７は開弁し、第２の吐出用開口５０の逆止弁５８は閉弁することで、浴槽１内の温湯は、第２の吸入用開口４８から第２の温湯通路５２内に流入し、外側通路４３から接続管４５を介して加熱器の吸入用配管に流出し、浴槽１内の温湯は循環して温度が上昇することになる。
【００３５】
上記のように、外部ケース３４の接続管４４、４５と、浴槽１の外部に設置された加熱器の吸入用配管と吐出用配管を接続するにおいて、両接続管４４、４５に対して吸入用配管と吐出用配管の何れを接続してもよく、接続の無極性が得られると共に、何れの接続においても、浴槽内への温湯の吐出は、左右の下部両側の両吐出用開口４９、５０に振り分けられ、浴槽１の温湯の沸き上がり温度にバラツキが出ないだけでなく、入浴中の追い焚き時に火傷のおそれもない。
【００３６】
【発明の効果】
以上のように、この発明によると、上記のような構成としたので、浴槽の外部に設置された加熱器の吸入用配管と吐出用配管の接続において、接続時の無極性が得られると共に、浴槽への温湯の吐出が左右両側下部の開口から行え、浴槽の温湯の沸き上がり温度にバラツキが出ないと共に、吐出する温湯の両側開口への振り分けにより、温湯の温度が緩和されるので、入浴中の追い焚き時に火傷のおそれがないという効果がある。
【００３７】
また、浴槽の温湯をフイルターキャップを介して前面側から吸込むことがきるので、ゴミが詰まりにくいという利点がある。
【図面の簡単な説明】
【図１】この発明の無極性浴槽用循環金具を示す縦断側面図
【図２】この発明の無極性浴槽用循環金具の外形を示す斜視図
【図３】（Ａ）は無極性浴槽用循環金具の循環口本体の通路構造を示す縦断側面図、（Ｂ）は内側通路の接続管に加熱器の吸入用配管を接続し、外側通路の接続管に加熱器の吐出用配管を接続した場合の温湯の流れを示す無極性浴槽用循環金具の回路図
【図４】（Ａ）は無極性浴槽用循環金具の循環口本体の通路構造を示す縦断側面図、（Ｂ）は外側通路の接続管に加熱器の吸入用配管を接続し、内側通路の接続管に加熱器の吐出用配管を接続した場合の温湯の流れを示す無極性浴槽用循環金具の回路図
【図５】（Ａ）は従来の無極性浴槽用循環金具の循環口本体の通路構造を模式的に示す縦断正面図、（Ｂ）は同縦断側面図
【図６】（Ａ）は従来の更に他の例の無極性浴槽用循環金具における循環口本体の通路構造を示す縦断側面図、（Ｂ）は加熱器の吸入用配管を内側通路に接続し、加熱器の吐出用配管を外側通路に接続した場合の温湯の流れを示す回路図
【図７】（Ａ）は従来の更に他の例の無極性浴槽用循環金具における循環口本体の通路構造を示す縦断側面図、（Ｂ）は加熱器の吸入用配管を外側通路に接続し、加熱器の吐出用配管を内側通路に接続した場合の温湯の流れを示す回路図
【符号の説明】
３１無極性浴槽用循環金具
３２スリーブ
３３循環口本体
３４外部ケース
３５円筒部
３６フランジ
３７パッキング
３８フランジ
３９パッキング
４０仕切り壁
４１接続筒
４２内側通路
４３外側通路
４４接続管
４５接続管
４６フイルターキャップ
４７第１の吸入用開口
４８第２の吸入用開口
４９第１の吐出用開口
５０第２の吐出用開口
５１第１の温湯通路
５２第２の温湯通路
５３開口
５４フイルター
５５逆止弁
５６逆止弁
５７逆止弁
５８逆止弁
５９連通路[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a non-polar bathtub circulation fitting that is attached to a side wall of a bathtub and used for connecting a pipe for circulating hot water through an external heater to the bathtub.
[0002]
[Prior art]
In the bathtub metal fittings that are attached to the side wall of the bathtub and circulate hot water via an external heater, the structure with the suction opening on the front of the circulation port body and the discharge opening on the periphery of the heater There is a polarity to the connection that the suction pipe must be connected to the suction opening and the discharge pipe must be connected to the discharge opening.
[0003]
However, at the site where the circulation fittings for the bathtub and the heater are connected, if there is a polarity to the connection, it is often the case that the piping connection is inadvertently mistaken, and if the piping is connected in reverse, the front of the circulation port body Hot water with a high temperature is discharged from the bath, and there is a risk of burns when taking a bath.
[0004]
Therefore, in order to prevent the above-described piping connection error, non-polarization of the circulation fitting for the bathtub is an effective means.
[0005]
FIG. 5 schematically shows the structure of a conventional non-polar bathtub circulating metal fitting, with a through hole 3 provided in the side wall 2 of the bathtub 1 sandwiching the circulation port body 4 on the inside and the outer case 5 on the outside in a watertight manner. And the inside of the circulation port body 4 and the outer case 5 is separated into an inner passage 6 and an outer passage 7, and suction and discharge communicating with the inner passage 6 around the circulation port body 4 at positions on the left and right sides. In the structure, an opening 8 for suction and discharge that communicates with the outer passage 7 is provided, and a connection pipe 10 that communicates with the inner passage 6 and a connection pipe 11 that communicates with the outer passage 7 are provided on the outer case 5. It has become.
[0006]
Such bathtub circulation fittings may be connected to either of the connection pipes of the intake pipe and the discharge pipe of the heater, and either one of the intake and discharge openings 8 or 9 draws hot water, and the other The suction / discharge opening 8 or 9 discharges hot water.
[0007]
6 and 7 schematically show another structure of a conventional nonpolar bathtub circulation fitting, and the same reference numerals are used for the same parts as in the example of FIG.
[0008]
A suction opening 12 is provided on the front surface of the circulation port body 4, and first and second discharge openings 13 and 14 are provided at positions on the lower left and right sides of the periphery. A first hot water passage 15 connecting the opening 12 for the discharge and the first discharge opening 13, and a second hot water passage 16 connecting the outer passage 7 to the suction opening 12 and the second discharge opening 14, In the middle of the first hot water passage, a check valve 17 that allows inflow of hot water from the suction opening 12 to the first hot water passage 15 is provided in a portion near the inner passage 6 with respect to the suction opening 12. In addition, a check valve 18 that allows the hot water to flow out from the first hot water passage 15 to the first discharge opening 13 is provided at a portion of the first discharge opening 13.
[0009]
Further, in the middle of the second hot water passage 16, a check valve that allows hot water to flow from the suction opening 12 to the second hot water passage 16 at a portion closer to the outer passage 7 with respect to the suction opening 12. 19 and a check valve 20 that allows the hot water to flow out from the second hot water passage 16 to the second discharge opening 14 is provided at a portion of the second discharge opening 14.
[0010]
In this non-polar bathtub circulation fitting, the suction pipe of the heater and the discharge pipe on the other side can be connected to any of the connecting pipes 10 and 11, and the non-polar bathtub circulation pipe is shown in FIG. Is connected to the inner passage 6 and the hot water flow in a state where the discharge pipe of the heater is connected to the outer passage 7 is shown.
[0011]
In the figure, as indicated by an arrow, hot water in the bathtub flows from the suction opening 12, pushes the check valve 17 out, flows out from the first hot water passage 15 to the inner passage 6, and the check valve 18 is closed. I speak.
[0012]
The hot water from the heater enters the second hot water passage 16 from the outer passage 7, pushes the check valve 20 open, and discharges it from the second discharge opening 14 to the bathtub. At this time, the check valve 19 is closed.
[0013]
FIG. 7 shows the flow of hot water in a state where the suction pipe of the heater is connected to the outer passage 7 and the discharge pipe of the heater is connected to the inner passage 6. In FIG. The hot water flows in from the suction opening 12, pushes the check valve 19 open, flows out from the second hot water passage 16 to the outer passage 7, and the check valve 20 is closed.
[0014]
Further, the hot water from the heater enters the first hot water passage 15 from the inner passage 6, pushes the check valve 18 open, and discharges it from the first discharge opening 13 to the bathtub. At this time, the check valve 17 is closed.
[0015]
[Problems to be solved by the invention]
By the way, in any of the above non-polar bathtub circulation fittings, it is possible to achieve non-polarity at the time of pipe connection, but discharge of hot water to the bathtub can only be obtained from either the left or right opening, and therefore The problem is that the boiling temperature of the hot water in the bathtub tends to vary, and the temperature of the hot water discharged to the bathtub becomes locally hot in a structure that comes out from one of the openings, and there is a risk of burns when chasing the bath There is.
[0016]
Accordingly, an object of the present invention is to provide a non-polar bathtub in which hot water can be discharged into the bathtub from both the left and right openings, the boiling temperature of the hot water in the bathtub does not vary, and there is no risk of burns during reheating during bathing It is to provide a circulating metal fitting.
[0017]
[Means for Solving the Problems]
In order to solve the problems as described above, the present invention is provided on the side wall of the bathtub in a non-polar bathtub circulation fitting that is fixed to the side wall of the bathtub and circulates hot water between the external heater and the inside of the bathtub. A circulation port body having first and second suction openings on the front surface and first and second discharge openings on the front surface is fixed to the front end of the sleeve fixed to the through hole, and the sleeve An inner passage and an outer passage connected to the heater are provided separately in the interior of the circulation port body, and a first passage for connecting the inner passage to the first suction opening and the first discharge opening is provided in the circulation port body. A hot water passage and a second hot water passage connecting the outer passage to the second suction opening and the second discharge opening are provided, and the first hot water passage is provided at a portion of the first suction opening, A check valve for allowing hot water to flow into the first hot water passage from the first suction opening; A check valve that allows the hot water to flow out from the first hot water passage to the first discharge opening is provided in front of the opening, and further, the second hot water passage is provided at a portion of the second suction opening. A check valve that allows inflow of hot water from the second suction opening to the second hot water passage, and hot water from the second hot water passage to the second discharge opening before the second discharge opening. The first and second discharge openings are communicated with each other at positions downstream of the respective check valves.
[0018]
In the connection of the suction pipe and the discharge pipe of the heater to the inner passage and the outer passage, no matter which side the suction pipe and the discharge pipe are connected, a total of four check valves are used. Hot water in the bathtub is sucked from either the first suction opening or the second suction opening, and the hot water from the heater is discharged from both the first discharge opening and the second discharge opening. The nonpolarity of is obtained.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below together with examples shown in FIGS.
[0020]
As shown in FIGS. 1 and 2, the non-polar bathtub circulation fitting 31 includes a sleeve 32 inserted into the through hole 3 provided in the side wall 2 of the bathtub 1, and a circulation port body provided at the inner end of the bathtub 32. 33 and an outer case 34 attached to the portion of the sleeve 32 that protrudes out of the bathtub.
[0021]
The sleeve 32 is made of synthetic resin, is formed by providing a flange 36 around the outer periphery of the cylindrical portion 35 inserted through the through hole 3, and a packing 37 is inserted into the cylindrical portion 35 so as to be in contact with the flange 36. Further, the outer case 34 is externally screwed into the cylindrical portion 35 of the sleeve 32, the tip flange 38 is covered with the packing 39, the screw is inserted into the sleeve 32, and the side wall 2 of the bathtub 1 is sandwiched between the packings 37 and 39. Thus, the sleeve 32 and the outer case 34 are fixed to the side wall 2 of the bathtub 1 in a watertight manner.
[0022]
Inside the sleeve 32, a cylindrical partition wall 40 provided in the circulation port body 33 is positioned coaxially, and a connection tube 41 protruding from the outer case 34 is watertight in the partition wall 40. The sleeve 32 is connected to the inner passage 42 located inside the partition wall 40 and the connection tube 41, and the outer passage 43 between the inner periphery of the sleeve 32 and the outer periphery of the partition wall 40. While being separated, the outer case 34 is provided with a connection pipe 44 communicating with the inner passage 42 and a connection pipe 45 communicating with the outer passage 43.
[0023]
The circulation port body 33 is made of a synthetic resin and is formed into a flat circular case with a hollow inside, and a partition wall 40 protrudes from the center of the rear portion. A metal filter cap 46 is formed outside the circulation port body 33. Is fixed by external fitting.
[0024]
As shown in FIGS. 3 and 4, a first suction opening 47 and a second suction opening 48 are provided on the front wall of the circulation port body 33, and the first discharge is formed on both left and right lower portions of the peripheral wall. A first hot water passage for connecting the inner passage 42 to the first suction opening 47 and the first discharge opening 49 is provided in the circulation port body 33. 51 and a second hot water passage 52 connecting the outer passage 43 to the second suction opening 48 and the second discharge opening 50 are partitioned in a watertight manner.
[0025]
As shown in FIG. 2, the metal filter cap 46 fitted around the circulation port body 33 has a filter 54 stretched around an opening 53 provided on the front surface, and a first suction opening 49 and a Two openings 49a and 50a corresponding to the two suction openings 50 are provided.
[0026]
A check valve 55 that allows inflow of hot water from the first suction opening 47 to the first hot water passage 51 in a portion near the first suction opening 47 in the middle of the first hot water passage 51; A check valve 56 that allows the hot water to flow out from the first hot water passage 51 to the first discharge opening 49 is provided in front of the first discharge opening 49, and further in the middle of the second hot water passage 52. Thus, a check valve 57 that allows inflow of hot water from the second suction opening 48 to the second hot water passage 52 and a portion near the second suction opening 48 and the second discharge opening 50 are provided. In addition, a check valve 58 that allows the hot water to flow out from the second hot water passage 52 to the second discharge opening 50 is provided.
[0027]
Further, the first hot water passage 51 and the second hot water passage 52 communicate with each other on the downstream side of the check valves 56 and 58 of the discharge openings 49 and 50 by the communication passage 59 provided in the circulation port body 33. As a result, the discharge openings 49 and 50 are connected to each other downstream of the check valves 56 and 58 through the communication passage 59, and are discharged from either the first or second hot water passages 51 and 52. The hot water is distributed to both the discharge openings 49 and 50 through the communication passage 59 and discharged into the bathtub.
[0028]
The non-polar bathtub circulating metal fitting according to the present invention is configured as described above, and is attached to the side wall 2 of the bathtub 1. The connection pipes 44 and 45 of the outer case 34 and the heater installed outside the bathtub 1. Connect the suction pipe and the discharge pipe. At this time, the suction pipe and the discharge pipe of the heater may be connected to either side of both connection pipes 44 and 45.
[0029]
FIG. 3 shows the flow of hot water when the inlet pipe of the heater is connected to the connection pipe 44 of the inner passage 42 and the discharge pipe of the heater is connected to the connection pipe 45 of the outer passage 43.
[0030]
By igniting the heater, the hot water that has flowed into the outer passage 43 from the discharge pipe via the connecting pipe 45 flows into the second hot water passage 52, and the second hot water passage 52 is located in the second hot water passage 52. The check valve 57 of the suction opening 48 is closed by water pressure, and the check valve 58 of the second discharge opening 50 is opened by water pressure. Therefore, the hot water in the second hot water passage 52 is It passes through the check valve 58, is distributed to both the discharge openings 49 and 50 through the communication passage 59, and is discharged into the bathtub 1 from both the left and right lower sides.
[0031]
Further, the inside of the first hot water passage 51 is sucked from the inner passage 42 by the suction force acting on the suction pipe, and the check valve 55 of the first suction opening 47 located in the first hot water passage 51 is opened. The check valve 56 of the first discharge opening 49 is closed, so that the hot water in the bathtub flows into the first hot water passage 51 from the first suction opening 47 and from the inner passage 42. The hot water in the bathtub 1 circulates and rises in temperature by flowing out into the intake pipe of the heater via the connecting pipe 44.
[0032]
FIG. 4 shows the flow of hot water when a pipe for intake of the heater is connected to the connection pipe 45 of the outer passage 43 and a discharge pipe of the heater is connected to the connection pipe 44 of the inner passage 42.
[0033]
By igniting the heater, the hot water that has flowed into the inner passage 42 from the discharge pipe via the connecting pipe 44 flows into the first hot water passage 51, and the first hot water passage 51 is located in the first hot water passage 51. The check valve 55 of the suction opening 47 is closed by water pressure, and the check valve 56 of the first discharge opening 49 is opened by water pressure. Therefore, the hot water in the first hot water passage 51 is It passes through the check valve 56, is distributed to both the discharge openings 49 and 50 through the communication passage 59, and is discharged into the bathtub from both the left and right lower sides.
[0034]
Further, the inside of the second hot water passage 52 is sucked from the outer passage 43 by the suction force acting on the suction pipe, and the check valve 57 of the second suction opening 48 located in the second hot water passage 52 is opened. Then, the check valve 58 of the second discharge opening 50 is closed, so that the hot water in the bathtub 1 flows into the second hot water passage 52 from the second suction opening 48, and the outer passage 43. The hot water in the bathtub 1 circulates and rises in temperature through the connection pipe 45 to the suction pipe of the heater.
[0035]
As described above, when connecting the connection pipes 44 and 45 of the outer case 34 and the suction pipe and discharge pipe of the heater installed outside the bathtub 1, the suction pipes are connected to both the connection pipes 44 and 45. Either the pipe or the discharge pipe may be connected, and non-polarity of the connection can be obtained. In any connection, the hot water is discharged into the bathtub at both discharge openings 49 and 50 on both the left and right lower sides. Not only does the temperature of the hot water in the bathtub 1 boil, but there is no risk of burns when chasing while taking a bath.
[0036]
【The invention's effect】
As described above, according to the present invention, since it is configured as described above, in the connection between the suction pipe and the discharge pipe of the heater installed outside the bathtub, nonpolarity at the time of connection is obtained, Hot water can be discharged into the bathtub from the openings on the left and right sides, the boiling temperature of the hot water in the bathtub does not vary, and the temperature of the hot water is relaxed by distributing the hot water discharged to the both sides. There is an effect that there is no risk of burns when chasing inside.
[0037]
Moreover, since the hot water of a bathtub can be sucked in from a front side via a filter cap, there exists an advantage that it is hard to clog garbage.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a non-polar bathtub circulation fitting according to the present invention. FIG. 2 is a perspective view showing an outer shape of a non-polar bathtub circulation fitting according to the present invention. A vertical side view showing the passage structure of the metal circulation port body, (B) shows the case where the heater intake pipe is connected to the inner passage connection pipe and the heater discharge pipe is connected to the outer passage connection pipe [Fig. 4] (A) is a longitudinal side view showing the passage structure of the circulation port body of the non-polar bathtub circulation fitting, and (B) is the connection of the outer passage. Circuit diagram of non-polar bath circulation fittings showing the flow of hot water when the pipe for connecting the heater is connected to the pipe and the pipe for discharging the heater is connected to the connecting pipe in the inner passage [Figure 5] (A) Is a longitudinal front view schematically showing the passage structure of the circulation port body of the conventional non-polar bathtub circulation fitting, (B) is the longitudinal section [FIG. 6] (A) is a longitudinal side view showing a passage structure of a circulation port body in a conventional nonpolar bathtub circulation fitting, and (B) is a drawing of an intake pipe of a heater as an inner passage. FIG. 7A is a circuit diagram showing the flow of hot water when the discharge pipe of the heater is connected to the outer passage. FIG. 7A is a view of the circulation port body in the conventional non-polar bathtub circulation fitting. Fig. 3B is a longitudinal side view showing the passage structure. Fig. 2B is a circuit diagram showing the flow of hot water when the heater suction pipe is connected to the outer passage and the heater discharge pipe is connected to the inner passage. ]
31 Non-polar bathtub circulation fitting 32 Sleeve 33 Circulation port body 34 Outer case 35 Cylindrical part 36 Flange 37 Packing 38 Flange 39 Packing 40 Partition wall 41 Connection pipe 42 Inner passage 43 Outer passage 44 Connection pipe 45 Connection pipe 46 Filter cap 47 1 suction opening 48 second suction opening 49 first discharge opening 50 second discharge opening 51 first hot water passage 52 second hot water passage 53 opening 54 filter 55 check valve 56 check valve 57 Check valve 58 Check valve 59 Communication path

Claims

In a non-polar bathtub circulation fitting that is fixed to the side wall of the bathtub and circulates hot water between an external heater and the inside of the bathtub,
A circulation port body having first and second suction openings on the front surface and first and second discharge openings on the front end of a sleeve fixed to a through hole provided in a side wall of the bathtub The inner passage and the outer passage connected to the heater are provided separately in the sleeve, and the inner passage is provided in the circulation port body with the first suction opening and the first discharge opening. And a second hot water passage connecting the outer passage to the second suction opening and the second discharge opening, and the first hot water passage includes a first suction passage. A check valve that allows inflow of hot water from the first suction opening to the first hot water passage in the opening portion for the first discharge, and a first discharge from the first hot water passage in front of the first discharge opening. A check valve is provided for allowing the hot water to flow out to the opening for use, and the second hot water passage is provided with a second check valve at the second suction opening. A check valve that allows inflow of hot water from the suction opening to the second hot water passage, and the flow of hot water from the second hot water passage to the second discharge opening before the second discharge opening. A non-polar tub circulating metal fitting provided with a check valve to allow, wherein the first and second discharge openings communicate with each other at positions downstream of the check valves.