JP3575309B2

JP3575309B2 - Bath kettle equipment

Info

Publication number: JP3575309B2
Application number: JP1757499A
Authority: JP
Inventors: 康城菅原; 久二御立; 雅典東内
Original assignee: Noritz Corp
Current assignee: Noritz Corp
Priority date: 1999-01-26
Filing date: 1999-01-26
Publication date: 2004-10-13
Anticipated expiration: 2019-01-26
Also published as: JP2000213802A

Description

【０００１】
【発明の属する技術分野】
本発明は、浴槽水を循環加熱する風呂釜装置に関する。
【０００２】
【従来の技術】
図３に従来の自然循環型風呂釜装置の例を示す。浴槽１０に対して自然循環型の風呂釜２０が連結されており、浴槽水が風呂釜２０に自然循環されながら加熱される。
自然循環型風呂釜装置の場合、浴槽１０側の壁に上下一対の大きな口径の循環用接続口１１を設け、風呂釜２０への自然循環が大口径のパイプを通じて良好に行えるようにする必要があった。
【０００３】
【発明が解決しようとする課題】
ところが、上記従来の古くなった自然循環型風呂釜２０を、浴槽１０を残して、新しい強制循環式の風呂釜に取り替えようとする場合、壁等を壊して循環用接続口１１を取り外し、強制循環式用の循環金具に付け替えなければならないという問題が有った。
一方、従来の自然循環型風呂釜２０は循環加熱効率やその他の機能の点において、新しい強制循環型風呂釜には劣るという問題があった。
【０００４】
そこで本発明は上記不都合を解消し、従来の自然循環型風呂釜に対して用いられていた浴槽をそのまま利用して、良好な循環加熱を行うことができる風呂釜装置の提供を課題とする。
【０００５】
【課題を解決するための手段】
上記課題を解決するため、本発明の風呂釜装置は、浴槽壁に設けられた上下一対の循環用接続口から浴槽水を循環させて加熱するための風呂釜装置であって、前記浴槽の循環用接続口に対して接続される一対の連結用パイプと該一対の連結用パイプを上下の位置に配置した水室とを備えた自然循環用連結具と、加熱手段を有する熱交換器と循環ポンプと強制循環用配管とを少なくとも備えた強制循環加熱具とからなり、強制循環加熱具は前記強制循環用配管を構成する追焚き戻り管の吸込口と追焚き往き管の吐出口をそれぞれ前記自然循環用連結具内に差入れた状態に配置してあることを第１の特徴としている。
また本発明の風呂釜装置は、上記第１の特徴に加えて、追焚き戻り管は、水室を貫通して下部連結用パイプの付け根から先端部へ深く侵入させて、その吸込口を設け、追焚き往き管は水室を貫通して上部連結用パイプの付け根から少しだけ侵入させて、その吐出口を設けたことを第２の特徴としている。
また本発明の風呂釜装置は、上記第２の特徴に加えて、下部連結用パイプの先端付近に、流れに対する抵抗部を設けたことを第３の特徴としている。
また本発明の風呂釜装置は、上記第２又は第３の特徴に加えて、水室の上下の連結用パイプの中間位置に対して浴槽の水位を検出するための水位センサを設けたことを第４の特徴としている。
また本発明の風呂釜装置は、上記第１〜４の何れかの特徴に加えて、浴槽の循環用接続口に対して連結用パイプを連結するのに用いる連結用ゴムを、樹脂製とした自然循環用連結具の前記連結用パイプに一体成形で取り付けてあることを第５の特徴としている。
また本発明の風呂釜装置は、上記第１〜５の何れかの特徴に加えて、浴槽の循環用接続口に対して連結用パイプを連結するのに用いる連結用ゴムを、予め自然循環用連結具の前記連結用パイプに取り付けておくと共に、該取り付けた連結用ゴムだけを風呂釜外装体から出しておく構成として、前記浴槽の循環用接続口と接続できるようにしたことを第６の特徴としている。
【０００６】
上記第１の特徴によれば、浴槽から自然循環用連結具内に流れ込んだ浴槽水は、その一部が強制循環用配管の追焚き戻り管の吸込口から熱交換器に循環されて加熱され、更に追焚き往き管を通って吐出口から再び自然循環用連結具内に戻り、浴槽内に循環する。
本特徴によれば、一対の循環用接続口を備えた従来の自然循環型風呂釜用の浴槽をそのまま利用して、強制循環型風呂釜を取り付けて用いることができる。
強制循環加熱具を通って加熱された高温水が自然循環用連結具を通る温水によって適当に温度低下され、適当な温度になって浴槽に入るので、入浴者に高温水による違和感を与えることがない。
【０００７】
上記第２の特徴によれば、上記第１の特徴に加えて、追焚き戻り管は、水室を貫通して下部連結用パイプの付け根から先端部へ深く侵入させて、その吸込口を設けているので、その吸込口での吸引圧が水室に及ぼす影響を無くすことができる。そして追焚き往き管は水室を貫通して上部連結用パイプの付け根から少しだけ侵入させて、その吐出口を設けたので、該吐出口からの強制循環温水の吐出力によるエジェクタ効果を十分に自然循環用連結具内を流れる自然流に対して及ぼすことができ、自然循環を促進させることができる。よって循環ポンプによる強制循環量以上の流量を流すことができ、適温に混合された温水を速やかに循環させて、入浴者に高温水による違和感を与えることなく追焚きすることができる。
【０００８】
また上記本発明の第３の特徴によれば、上記第２の特徴による作用に加えて、下部連結用パイプの先端付近に、流れに対する抵抗部を設けたことで、連結用パイプを利用して両搬送給湯により給湯器から浴槽に給湯する際に、下部連結用パイプから浴槽内に流出する勢いが弱められ、浴槽側から嵌め込まれたフィルタが水の勢いで外れるのが防止される。
【０００９】
また上記本発明の第４の特徴によれば、上記第２又第３の特徴による作用に加えて、水室の上下の連結用パイプの中間位置に対して浴槽の水位を検出するための水位センサを設けたことで、連結用パイプを利用して両搬送給湯により給湯器から浴槽に給湯する際に、水室内の圧力のバランスが前記中間位置でとられるため、給湯を行いながら水位を検出して、水位検出のための中断を行うことなく浴槽への湯張りが可能となる。
【００１０】
また上記本発明の第５の特徴によれば、上記第１〜４の何れかの特徴による作用に加えて、連結用ゴムを、樹脂製とした自然循環用連結具の前記連結用パイプに一体成形で取り付けることで、連結用ゴムと連結用パイプとを連結するための締め付けリング等の締め付け金具の数が半減され、また連結のための作業時間、作業コストが半減される。
【００１１】
また上記本発明の第６の特徴によれば、上記第１〜５の何れかの特徴による作用に加えて、風呂釜外装体からは連結用ゴムだけが突出し、連結用パイプは風呂釜外装体からに外に突出しないので、運搬時や組み立て時等において、風呂釜外装体から突出した連結用パイプが破損したりする不都合が解消される。また連結用パイプは風呂釜外装体から外に突出しないので、連結用パイプを樹脂製にした場合でも強度上の問題が生じない。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照しながら説明する。
図１は本発明の一実施形態を示す風呂釜装置の全体構成図、図２は抵抗板の正面図である。
【００１３】
図１において、１０は浴槽で、側壁の上下の位置に一対の循環用接続口１１が離間して設けられている。このような浴槽１０は、従来より自然循環型風呂釜用として用いられている。
風呂釜２０は、浴槽の循環用接続口１１に対して接続される一対の連結用パイプ２１ａ、２１ｂと該一対の連結用パイプ２１ａ、２１ｂを上下の位置に配置した水室２２とを備えた自然循環用連結具Ａ、加熱手段を有する熱交換器２３と循環ポンプ２４と追焚き戻り管２５及び追焚き往き管２６からなる強制循環用配管とを備えた強制循環加熱具Ｂ、及び外装体Ｃ等から構成されている。
前記風呂釜２０に対しては、図示しない給湯器からの給湯回路３０が接続されるようになされており、浴槽１０への湯張りができるようになっている。勿論、前記風呂釜２０は図示しない給湯器と一体的に構成してもよく、その場合には前記風呂釜２０と給湯器は同じ外装体Ｃに内装されることになる。
【００１４】
前記強制循環加熱具Ｂは、前記強制循環用配管を構成する追焚き戻り管２５の吸込口２５ａと追焚き往き管２６の吐出口２６ａをそれぞれ自然循環用連結具Ａ内に差し入れた状態に配置することで、浴槽１０から自然循環用連結具Ａ内に入ってきた浴槽水の一部を更に追焚き戻り管２５から熱交換器２３に導いて加熱し、追焚き往き管２６を介して、再び自然循環用連結具Ａ内に戻して、浴槽１０内に循環させることができる。
【００１５】
前記追焚き戻り管２５は、より具体的には、水室２２を貫通して下部連結用パイプ２１ｂの付け根から先端部へ深く侵入させて、その吸込口２５ａを設けている。一方、追焚き往き管２６は水室２２を貫通して上部連結用パイプ２１ａの付け根から少しだけ侵入させて、その吐出口２６ａを設けている。吐出口２６ａはその口を先細りに構成することで、吐出の勢いを上げ、エジェクタ効果を更に向上させることができる。
前記自然循環用連結具Ａの水室２２は連結用パイプ２１ａ、２１ｂに対して容量が大きくなされており、水室２２の側壁の上下に離間した位置から前記一対の連結用パイプ２１ａ、２１ｂを水平方向に突出させて設けている。この水平方向に伸びた連結用パイプ２１ａ、２１ｂに対して、そのパイプ内のほぼ中心線付近に、前記追焚き戻り管２５と追焚き往き管２６がそれぞれ同方向に侵入した形となっている。
【００１６】
前記下部連結用パイプ２１ｂの先端付近に、流れに対する抵抗部として抵抗板２７を設けている。この抵抗板２７は、図２に示すように、下部連結用パイプ２１ｂの通路断面積を減少させるような形状とされている。
浴槽１０から下部連結用パイプ２１ｂ側への循環用接続口１１には、浴槽１０から流出してゆく循環流に含まれるゴミ等を取り除くためのフィルタ１２が設けられる。その一方、浴槽１０に湯張りを行う際には、給湯器の給湯回路３０から風呂釜２０に供給された水を、追焚き戻り管２５、追焚き往き管２６の両方を通す両搬送で、両方の連結用パイプ２１ａ、２１ｂから浴槽１０内に導入させるのが効率的である。このとき下部連結用パイプ２１ｂを流れる水の勢いが大きいと、フィルタ１２が外れてしまう。そのため抵抗板２７を設けることで、流速を減じ、フィルタ１２が外れるのを防止することができる。
【００１７】
前記水室２２の上下の連結用パイプ２１ａ、２１ｂの中間位置に対して浴槽の水位を検出するための水位センサ２８を設けている。水位センサ２８は取入れパイプ２８ａを介して設けられている。
水位センサ２８を前記中間位置に設けることで、前記両搬送によって浴槽１０への湯張りを行う場合においても、水室２２内の前記水位センサ２８の位置では水圧がバランスをとり、湯張り水の流れによる水位圧力の影響を受けることなく、正確な浴槽水位の圧力を検出することができる。よって、途中中断して浴槽水位を測る必要なく、浴槽の連続湯張りができる。
【００１８】
前記自然循環用連結具Ａの一対の連結用パイプである上部連結用パイプ２１ａと下部連結用パイプ２１ｂにはその先端部付近に、それぞれ連結用ゴム２９、２９が取り付けられる。上下の連結用パイプ２１ａ、２１ｂと水室２２は樹脂製とし、一体成形により構成されている。そして前記連結用ゴム２９、２９の連結用パイプ２１ａ、２１ｂへの取り付けは、前記樹脂による一体成形の際に連結用ゴム２９、２９も連結用パイプ２１ａ、２１ｂに対して一体に成形しておく。これによって連結用ゴム２９、２９の連結用パイプ２１ａ、２１ｂに対する取り付け作業を省くことができ、また取り付けリング等の締め付け金具の必要数も半減させることができる。浴槽１０の循環用接続口１１への取り付けは、前記連結用ゴム２９、２９を循環用接続口１１に嵌め合わせて、前述した図示しない締め付けリング等の締め付け具で締め付けることで行う。
なお前記樹脂は、例えばＥＰＤＭ等の耐熱性樹脂材料とすることができる。
【００１９】
前記一対の連結用パイプ２１ａ、２１ｂは、それに取り付けた連結用ゴム２９だけが外装体Ｃから突出するようにし、連結用パイプ２１ａ、２１ｂそのものは外装体Ｃから出ないように構成する。この場合には、連結用ゴム２９を予め連結用パイプ２１ａ、２１ｂに前述の一体成形により或いは締め付け金具を用いて、取り付け固定しておくことになる。
連結用パイプ２１ａ、２１ｂが外装体Ｃから出ないように構成することで、連結用パイプ２１ａ、２１ｂが破損するのを大きく低減することができる。連結用パイプ２１ａ、２１ｂが外装体Ｃから突出していると、運搬中やその他の場合に破損しやすい。
【００２０】
上記において、連結用パイプ２１ａ、２１ｂは必ずしも外装体Ｃから出ないようにする必要はない。が、外装体Ｃから出ないようにすることで、従来破損し易かった連結用パイプ２１ａ、２１ｂの破損を低減できる。また自然循環用連結具Ａ全体を樹脂による一体成形品とすることができ、コスト低減を図ることができる。
また上記自然循環用連結具Ａは、必ずしも樹脂製で一体成形する必要はない。が、樹脂製とすることで、コスト低減を図れる他、連結用ゴム２９を連結用パイプ２１ａ、２１ｂと一体成形できるメリットがある。
【００２１】
【発明の効果】
本発明は以上の構成、作用からなり、請求項１に記載の風呂釜装置によれば、浴槽壁に設けられた上下一対の循環用接続口から浴槽水を循環させて加熱するための風呂釜装置であって、前記浴槽の循環用接続口に対して接続される一対の連結用パイプと該一対の連結用パイプを上下の位置に配置した水室とを備えた自然循環用連結具と、加熱手段を有する熱交換器と循環ポンプと強制循環用配管とを少なくとも備えた強制循環加熱具とからなり、強制循環加熱具は前記強制循環用配管を構成する追焚き戻り管の吸込口と追焚き往き管の吐出口をそれぞれ前記自然循環用連結具内に差入れた状態に配置してあるので、
一対の循環用接続口を備えた従来の自然循環型風呂釜用の浴槽をそのまま利用して、強制循環型風呂釜を取り付けて用いることができる。
また強制循環加熱具を通って加熱された高温水を、自然循環用連結具を通る温水により適当な温度に温度低下させて浴槽に導入することができ、入浴者に高温水による違和感を与えるのを解消することができる。
また請求項２に記載の風呂釜装置によれば、請求項１に記載の構成による効果に加えて、追焚き戻り管は、水室を貫通して下部連結用パイプの付け根から先端部へ深く侵入させて、その吸込口を設け、追焚き往き管は水室を貫通して上部連結用パイプの付け根から少しだけ侵入させて、その吐出口を設けたので、
吸込口での吸引圧が水室に及ぼす影響を無くすことができる。
特に吐出口からの強制循環温水の吐出力によるエジェクタ効果を十分に自然循環用連結具内の自然流に対して及ぼすことができ、自然循環を促進させることができる。よって循環ポンプによる強制循環量以上の流量を流すことができ、適温に混合された温水を速やかに循環させ、これにより入浴者に高温水による違和感を与えることなく、良好に追焚きすることができる。
また請求項３に記載の風呂釜装置によれば、請求項２に記載の構成による効果に加えて、下部連結用パイプの先端付近に、流れに対する抵抗部を設けたので、連結用パイプを利用して両搬送給湯により給湯器から浴槽に給湯する際に、下部連結用パイプから浴槽内に流出する勢いを弱めることができ、浴槽側から嵌め込まれたフィルタが水の勢いで外れるのを防止することができる。
また請求項４に記載の風呂釜装置によれば、請求項２又は３に記載の構成による効果に加えて、水室の上下の連結用パイプの中間位置に対して浴槽の水位を検出するための水位センサを設けたので、
連結用パイプを利用して両搬送給湯により給湯器から浴槽への給湯中であっても、浴槽内の水位を良好に検出することが可能となり、水位検出のための中断を途中で行うことなく浴槽への連続湯張りを行うことができる。
また請求項５に記載の風呂釜装置によれば、請求項１〜４の何れかに記載の構成による効果に加えて、浴槽の循環用接続口に対して連結用パイプを連結するのに用いる連結用ゴムを、樹脂製とした自然循環用連結具の前記連結用パイプに一体成形で取り付けてあるので、
連結用ゴムと連結用パイプとを連結するための締め付けリング等の締め付け金具の数を半減させることができ、また連結のための作業時間、作業コストを半減させることができる。
また請求項６に記載の風呂釜装置によれば、請求項１〜５の何れかに記載の構成による効果に加えて、浴槽の循環用接続口に対して連結用パイプを連結するのに用いる連結用ゴムを、予め自然循環用連結具の前記連結用パイプに取り付けておくと共に、該取り付けた連結用ゴムだけを風呂釜外装体から出しておく構成として、前記浴槽の循環用接続口と接続できるようにしたので、
運搬時や組み立て時等において、風呂釜外装体から突出した連結用パイプが破損したりする不都合が解消される。そして連結用パイプは風呂釜外装体から外に突出しないので、連結用パイプを自然循環用連結具の一部として低コストの樹脂製からなる一体品にしても強度上の問題を生じさせなくすることができる。
【図面の簡単な説明】
【図１】本発明の一実施形態を示す風呂釜装置の全体構成図である。
【図２】抵抗板の正面図である。
【図３】従来の自然循環型風呂釜装置の例を示す図である。
【符号の説明】
１０浴槽
１１循環用接続口
１２フィルタ
２０風呂釜
２１ａ上部連結用パイプ
２１ｂ下部連結用パイプ
２２水室
２３熱交換器
２４循環ポンプ
２５追焚き戻り管
２５ａ吸込口
２６追焚き往き管
２６ａ突出口
２７抵抗板
２８水位センサ
２９連結用ゴム
３０給湯回路
Ａ自然循環用連結具
Ｂ強制循環加熱具
Ｃ外装体[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a bath pot device for circulating and heating bath water.
[0002]
[Prior art]
FIG. 3 shows an example of a conventional natural circulation type bath pot apparatus. A bathtub 20 of a natural circulation type is connected to the bathtub 10, and the bathtub water is heated while being naturally circulated through the bathtub 20.
In the case of the natural circulation bathtub apparatus, it is necessary to provide a pair of upper and lower large-diameter circulation connection ports 11 on the wall on the side of the bathtub 10 so that natural circulation to the bathtub 20 can be favorably performed through a large-diameter pipe. there were.
[0003]
[Problems to be solved by the invention]
However, when replacing the conventional old natural circulation type bath kettle 20 with a new forced circulation type bath kettle while leaving the bathtub 10, the wall or the like is broken, the circulation connection port 11 is removed, and the forced circulation type bath kettle 20 is removed. There was a problem that it had to be replaced with a circulation fitting for the circulation type.
On the other hand, there has been a problem that the conventional natural circulation bath kettle 20 is inferior to the new forced circulation bath kettle in terms of circulation heating efficiency and other functions.
[0004]
Therefore, an object of the present invention is to solve the above-mentioned inconvenience and to provide a bath-cooker device capable of performing good circulation heating by directly using a bathtub used for a conventional natural circulation-type bath-cooker.
[0005]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a bath kettle device of the present invention is a bath kettle device for circulating and heating bath tub water from a pair of upper and lower circulation connection ports provided on a bath tub wall, and circulating the bath tub. For natural circulation, comprising a pair of connecting pipes connected to the connecting port and a water chamber in which the pair of connecting pipes are arranged at upper and lower positions, a heat exchanger having heating means and circulation A forced circulation heating tool comprising at least a pump and a forced circulation pipe, wherein the forced circulation heating tool has a suction port of a supplementary return pipe and a discharge port of a supplementary return pipe constituting the forced circulation pipe, respectively. The first feature is that the device is inserted into the natural circulation connector.
In addition, in the bath kettle device of the present invention, in addition to the above-mentioned first feature, the additional heating return pipe penetrates through the water chamber and deeply penetrates from the base of the lower connecting pipe to the tip portion, and the suction port is provided. The second feature is that the additional heating pipe is penetrated through the water chamber and slightly penetrates from the base of the upper connecting pipe to provide a discharge port.
The third feature of the bath kettle device of the present invention is that, in addition to the above-described second feature, a flow resistance portion is provided near the tip of the lower connecting pipe.
Further, in addition to the second or third feature, the bath kettle device of the present invention further includes a water level sensor for detecting a water level of the bathtub at an intermediate position between the connecting pipes above and below the water chamber. This is the fourth feature.
In addition, in addition to the features of any one of the first to fourth aspects, the bath rubber device of the present invention is configured such that the connection rubber used for connecting the connection pipe to the circulation connection port of the bathtub is made of resin. A fifth feature is that the connection device for natural circulation is attached to the connection pipe by integral molding.
Further, in addition to the features of the first to fifth aspects, the bath kettle device of the present invention further includes a connecting rubber used for connecting the connecting pipe to the circulating connection port of the bathtub in advance for natural circulation. A sixth aspect of the present invention is that the connection rubber is attached to the connection pipe of the connection tool, and only the attached connection rubber is taken out of the bathtub exterior body so as to be connectable to the circulation connection port of the bathtub. Features.
[0006]
According to the first feature, the bathtub water flowing from the bathtub into the natural circulation connector is partially circulated to the heat exchanger from the suction port of the additional heating return pipe of the forced circulation pipe and heated. Then, it returns to the inside of the connector for natural circulation again from the discharge port through the additional heating pipe and circulates in the bathtub.
According to this feature, the forced circulation bath can be attached and used by using the conventional bathtub for the natural circulation bath having the pair of circulation connection ports as it is.
The high-temperature water heated through the forced circulation heater is appropriately cooled by the hot water passing through the natural circulation connector, reaches a suitable temperature, and enters the bathtub. Absent.
[0007]
According to the second feature, in addition to the first feature, the additional heating return pipe penetrates through the water chamber and penetrates deeply from the base of the lower connecting pipe to the tip end to provide a suction port therefor. Therefore, the influence of the suction pressure at the suction port on the water chamber can be eliminated. And the additional heating pipe penetrates the water chamber and penetrates a little from the base of the upper connecting pipe, and its discharge port is provided, so that the ejector effect by the discharge force of the forced circulating hot water from the discharge port is sufficient. It can affect the natural flow flowing in the natural circulation connector, and can promote natural circulation. Therefore, a flow rate equal to or greater than the forced circulation amount by the circulation pump can be flown, and the warm water mixed at an appropriate temperature can be quickly circulated, and the bather can be refired without giving the bather a sense of discomfort due to the high-temperature water.
[0008]
According to the third aspect of the present invention, in addition to the effect of the second aspect, a flow resistance portion is provided near the tip of the lower connecting pipe, so that the connecting pipe can be used. When hot water is supplied from the water heater to the bathtub by the two-way hot water supply, the momentum flowing out of the lower connecting pipe into the bathtub is weakened, and the filter fitted from the bathtub side is prevented from being removed by the force of the water.
[0009]
According to the fourth aspect of the present invention, in addition to the operation of the second or third aspect, a water level for detecting a water level of the bathtub with respect to an intermediate position between the connecting pipes above and below the water chamber. With the provision of the sensor, the pressure in the water chamber is balanced at the intermediate position when hot water is supplied from the water heater to the bath tub by using both connecting hot water pipes using the connecting pipe, so that the water level is detected while hot water is being supplied. Thus, the bathtub can be filled with water without interruption for detecting the water level.
[0010]
According to the fifth aspect of the present invention, in addition to the function of any one of the first to fourth aspects, the connecting rubber is integrated with the connecting pipe of the natural circulation connecting tool made of resin. By mounting by molding, the number of fastening fittings such as fastening rings for connecting the connecting rubber and the connecting pipe is halved, and the working time and working cost for the connection are halved.
[0011]
According to the sixth aspect of the present invention, in addition to the effect of any one of the first to fifth aspects, only the connecting rubber protrudes from the bathtub exterior, and the connection pipe is a bathtub exterior. Since it does not protrude from the outside, the inconvenience that the connecting pipe protruding from the bathtub exterior body is damaged during transportation or assembling is eliminated. Further, since the connecting pipe does not protrude out of the bathtub exterior body, there is no problem in strength even when the connecting pipe is made of resin.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an overall configuration diagram of a bath kettle device showing one embodiment of the present invention, and FIG. 2 is a front view of a resistance plate.
[0013]
In FIG. 1, reference numeral 10 denotes a bathtub, and a pair of circulation connection ports 11 are provided at positions above and below the side wall so as to be separated from each other. Such a bathtub 10 is conventionally used for a natural circulation type bathtub.
The bath kettle 20 includes a pair of connecting pipes 21a, 21b connected to the circulation connection port 11 of the bathtub, and a water chamber 22 in which the pair of connecting pipes 21a, 21b are arranged at upper and lower positions. A natural circulation connection tool A, a forced circulation heating tool B having a heat exchanger 23 having a heating means, a circulation pump 24, a forced circulation pipe including a reheating return pipe 25 and a reheating heating pipe 26, and an exterior body C and the like.
A hot water supply circuit 30 from a hot water heater (not shown) is connected to the bath kettle 20 so that the bathtub 10 can be filled with hot water. Of course, the bath kettle 20 may be integrally formed with a water heater (not shown). In that case, the bath kettle 20 and the water heater are housed in the same exterior body C.
[0014]
The forced circulation heating tool B is disposed in a state where the suction port 25a of the additional heating return pipe 25 and the discharge port 26a of the additional heating return pipe 26 constituting the forced circulation pipe are inserted into the natural circulation connector A, respectively. By doing so, a part of the bathtub water that has entered the natural circulation connector A from the bathtub 10 is further guided from the additional heating return pipe 25 to the heat exchanger 23 to be heated. It can be returned to the natural circulation connector A again and circulated in the bathtub 10.
[0015]
More specifically, the additional heating return pipe 25 penetrates through the water chamber 22 and penetrates deeply from the base of the lower connecting pipe 21b to the tip end thereof, and is provided with a suction port 25a. On the other hand, the additional boiler pipe 26 penetrates through the water chamber 22 and penetrates a little from the base of the upper connecting pipe 21a to provide its discharge port 26a. By making the discharge port 26a tapered, the discharge force can be increased and the ejector effect can be further improved.
The capacity of the water chamber 22 of the connector A for natural circulation is larger than that of the connecting pipes 21a and 21b, and the pair of connecting pipes 21a and 21b are separated from the upper and lower sides of the side wall of the water chamber 22. It is provided so as to protrude in the horizontal direction. With respect to the connecting pipes 21a and 21b extending in the horizontal direction, the additional heating return pipe 25 and the additional heating return pipe 26 are respectively intruded in the same direction in the vicinity of the center line in the pipes. .
[0016]
A resistance plate 27 is provided near the tip of the lower connection pipe 21b as a resistance part against flow. As shown in FIG. 2, the resistance plate 27 is shaped so as to reduce the cross-sectional area of the passage of the lower connecting pipe 21b.
At the connection port 11 for circulation from the bathtub 10 to the lower connecting pipe 21b side, a filter 12 for removing dust and the like contained in the circulation flow flowing out of the bathtub 10 is provided. On the other hand, when filling the bathtub 10 with water, the water supplied from the hot water supply circuit 30 of the water heater to the bath kettle 20 is transported through both the additional heating return pipe 25 and the additional heating forwarding pipe 26, It is efficient to introduce into the bathtub 10 from both connecting pipes 21a and 21b. At this time, if the momentum of the water flowing through the lower connecting pipe 21b is large, the filter 12 comes off. Therefore, by providing the resistance plate 27, the flow velocity can be reduced, and the filter 12 can be prevented from coming off.
[0017]
A water level sensor 28 for detecting the water level in the bathtub is provided at an intermediate position between the connecting pipes 21a and 21b above and below the water chamber 22. The water level sensor 28 is provided via an intake pipe 28a.
By providing the water level sensor 28 at the intermediate position, even when filling the bathtub 10 by the two conveyances, the water pressure is balanced at the position of the water level sensor 28 in the water chamber 22 and the filling water is provided. It is possible to accurately detect the bathtub water level pressure without being affected by the water level pressure due to the flow. Therefore, it is possible to continuously fill the bathtub without interrupting the bathtub and measuring the bathtub water level.
[0018]
Connecting rubbers 29, 29 are attached to the upper connecting pipe 21a and the lower connecting pipe 21b, which are a pair of connecting pipes of the connecting tool A for natural circulation, near their distal ends. The upper and lower connecting pipes 21a and 21b and the water chamber 22 are made of resin and are integrally formed. When the connecting rubbers 29, 29 are attached to the connecting pipes 21a, 21b, the connecting rubbers 29, 29 are also formed integrally with the connecting pipes 21a, 21b when the resin is integrally formed. . As a result, the work of attaching the connecting rubbers 29 to the connecting pipes 21a, 21b can be omitted, and the required number of fasteners such as mounting rings can be reduced by half. Attachment of the bathtub 10 to the circulation connection port 11 is performed by fitting the connection rubbers 29 and 29 to the circulation connection port 11 and tightening them with a tightening tool such as a tightening ring (not shown) described above.
The resin may be a heat-resistant resin material such as EPDM.
[0019]
The pair of connecting pipes 21a and 21b are configured such that only the connecting rubber 29 attached thereto protrudes from the outer casing C, and the connecting pipes 21a and 21b themselves do not protrude from the outer casing C. In this case, the connecting rubber 29 is attached and fixed in advance to the connecting pipes 21a and 21b by the above-described integral molding or by using a clamp.
By configuring the connecting pipes 21a and 21b so as not to protrude from the exterior body C, breakage of the connecting pipes 21a and 21b can be greatly reduced. If the connecting pipes 21a and 21b protrude from the exterior body C, they are likely to be damaged during transportation or in other cases.
[0020]
In the above description, the connecting pipes 21a and 21b do not necessarily need to be kept out of the exterior body C. However, by preventing the connecting pipes 21a and 21b from being damaged easily by preventing the connecting pipes 21a and 21b from being damaged from the exterior body C, the damage can be reduced. In addition, the entire natural circulation connector A can be formed as an integrally molded product made of resin, so that the cost can be reduced.
The natural circulation connector A is not necessarily required to be integrally formed of resin. However, by using a resin, there is an advantage that the cost can be reduced and the connecting rubber 29 can be integrally formed with the connecting pipes 21a and 21b.
[0021]
【The invention's effect】
The present invention has the above configuration and operation, and according to the bath kettle device according to claim 1, a bath kettle for circulating and heating bath tub water from a pair of upper and lower circulating connection ports provided on the bath tub wall. A device for natural circulation comprising a pair of connecting pipes connected to the circulating connection port of the bathtub and a water chamber in which the pair of connecting pipes are arranged at upper and lower positions, The forced circulation heating tool includes at least a heat exchanger having a heating means, a circulation pump, and a forced circulation pipe. The forced circulation heating tool is connected to a suction port of a reheating return pipe constituting the forced circulation pipe. Since the discharge ports of the fired pipes are arranged in a state inserted into the natural circulation coupler, respectively,
A bathtub for a forced circulation type bath can be attached and used by using a conventional bathtub for a natural circulation type bathtub provided with a pair of connection ports for circulation as it is.
In addition, the high-temperature water heated through the forced circulation heating device can be introduced into the bathtub by lowering the temperature to an appropriate temperature with the hot water passing through the natural circulation connection device, thereby giving a bather a sense of discomfort due to the high-temperature water. Can be eliminated.
According to the bath kettle device of the second aspect, in addition to the effect of the configuration of the first aspect, the additional heating return pipe penetrates the water chamber and extends deeply from the base of the lower connection pipe to the tip. Inlet was made, the suction port was provided, and the reheating pipe was penetrated through the water chamber and penetrated only a little from the base of the upper connecting pipe, so that the discharge port was provided.
The effect of the suction pressure at the suction port on the water chamber can be eliminated.
In particular, the ejector effect by the discharge force of the forced circulation hot water from the discharge port can be sufficiently exerted on the natural flow in the connector for natural circulation, and natural circulation can be promoted. Therefore, a flow rate equal to or more than the forced circulation amount by the circulation pump can be flowed, and the warm water mixed at an appropriate temperature can be quickly circulated, whereby the bather can be satisfactorily refired without giving the bather discomfort due to the high-temperature water. .
According to the bath kettle device of the third aspect, in addition to the effect of the configuration of the second aspect, since the flow resistance portion is provided near the tip of the lower connection pipe, the connection pipe is used. When hot water is supplied from the water heater to the bath tub by the two-way hot water supply, the momentum flowing out of the lower connecting pipe into the bath tub can be reduced, and the filter fitted from the bath tub side is prevented from coming off with the force of the water. be able to.
According to the bath kettle device of the fourth aspect, in addition to the effect of the configuration of the second or third aspect, the water level of the bathtub is detected at an intermediate position between the connecting pipes above and below the water chamber. The water level sensor of
The water level in the bathtub can be detected satisfactorily even during the hot water supply from the water heater to the bathtub by the two transport hot water supply using the connecting pipe, without interrupting the water level detection on the way. Continuous filling of the bathtub can be performed.
According to the bath kettle device according to the fifth aspect, in addition to the effect of the configuration according to any one of the first to fourth aspects, it is used for connecting the connection pipe to the circulation connection port of the bathtub. Since the connecting rubber is attached to the connecting pipe of the natural circulation connecting tool made of resin by integral molding,
The number of fasteners such as fastening rings for connecting the connecting rubber and the connecting pipe can be halved, and the work time and cost for connecting can be halved.
According to the bath kettle device of the sixth aspect, in addition to the effect of the configuration according to any one of the first to fifth aspects, it is used for connecting the connection pipe to the circulation connection port of the bathtub. The connection rubber is previously attached to the connection pipe of the natural circulation connection tool, and only the connection rubber attached is taken out of the bathtub exterior body, and is connected to the circulation connection port of the bathtub. Now that we can do it,
Inconveniences such as breakage of the connecting pipe protruding from the bath kettle outer body during transportation, assembling, and the like are eliminated. And since the connecting pipe does not protrude out of the bathtub exterior, even if the connecting pipe is made of a low-cost resin as an integral part of the natural circulation connector, it will not cause a problem in strength. be able to.
[Brief description of the drawings]
FIG. 1 is an overall configuration diagram of a bath kettle device showing an embodiment of the present invention.
FIG. 2 is a front view of a resistance plate.
FIG. 3 is a diagram showing an example of a conventional natural circulation type bath kettle device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Bathtub 11 Circulation connection port 12 Filter 20 Bath kettle 21a Upper connection pipe 21b Lower connection pipe 22 Water chamber 23 Heat exchanger 24 Circulation pump 25 Additional heating return pipe 25a Suction port 26 Additional heating pipe 26a Protruding port 27 Resistance Plate 28 Water level sensor 29 Rubber for connection 30 Hot water supply circuit A Connector for natural circulation B Forced circulation heater C Exterior

Claims

浴槽壁に設けられた上下一対の循環用接続口から浴槽水を循環させて加熱するための風呂釜装置であって、前記浴槽の循環用接続口に対して接続される一対の連結用パイプと該一対の連結用パイプを上下の位置に配置した水室とを備えた自然循環用連結具と、加熱手段を有する熱交換器と循環ポンプと強制循環用配管とを少なくとも備えた強制循環加熱具とからなり、強制循環加熱具は前記強制循環用配管を構成する追焚き戻り管の吸込口と追焚き往き管の吐出口をそれぞれ前記自然循環用連結具内に差入れた状態に配置してあることを特徴とする風呂釜装置。A bathtub device for circulating and heating bathtub water from a pair of upper and lower circulation connection ports provided on a bathtub wall, and a pair of connection pipes connected to the circulation connection port of the bathtub. A natural circulation connection tool including a water chamber in which the pair of connection pipes are arranged at upper and lower positions, a forced circulation heating tool including at least a heat exchanger having a heating unit, a circulation pump, and a forced circulation pipe The forced circulation heating tool is arranged such that the suction port of the additional heating return pipe and the discharge port of the additional heating return pipe constituting the forced circulation pipe are inserted into the natural circulation connection tool, respectively. A bath kettle device characterized by the above-mentioned.

追焚き戻り管は、水室を貫通して下部連結用パイプの付け根から先端部へ深く侵入させて、その吸込口を設け、追焚き往き管は水室を貫通して上部連結用パイプの付け根から少しだけ侵入させて、その吐出口を設けたことを特徴とする請求項１に記載の風呂釜装置。The additional heating return pipe penetrates through the water chamber and penetrates deeply from the root of the lower connection pipe to the tip, and the suction port is provided. The bath kettle device according to claim 1, wherein the discharge port is provided so as to slightly intrude therefrom.

下部連結用パイプの先端付近に、流れに対する抵抗部を設けたことを特徴とする請求項２に記載の風呂釜装置。The bath kettle device according to claim 2, wherein a resistance portion against flow is provided near a tip of the lower connecting pipe.

水室の上下の連結用パイプの中間位置に対して浴槽の水位を検出するための水位センサを設けたことを特徴とする請求項２又は３に記載の風呂釜装置。The bathtub apparatus according to claim 2 or 3, further comprising a water level sensor for detecting a water level in the bathtub at an intermediate position between the connecting pipes above and below the water chamber.

浴槽の循環用接続口に対して連結用パイプを連結するのに用いる連結用ゴムを、樹脂製とした自然循環用連結具の前記連結用パイプに一体成形で取り付けてあることを特徴とする請求項１〜４の何れかに記載の風呂釜装置。The connection rubber used for connecting the connection pipe to the circulation connection port of the bathtub is integrally molded and attached to the connection pipe of the natural circulation connection tool made of resin. Item 5. The bath kettle device according to any one of Items 1 to 4.

浴槽の循環用接続口に対して連結用パイプを連結するのに用いる連結用ゴムを、予め自然循環用連結具の前記連結用パイプに取り付けておくと共に、該取り付けた連結用ゴムだけを風呂釜外装体から出しておく構成として、前記浴槽の循環用接続口と接続できるようにしたことを特徴とする請求項１〜５の何れかに記載の風呂釜装置。The connecting rubber used for connecting the connecting pipe to the circulating connection port of the bath tub is previously attached to the connecting pipe of the natural circulation connecting tool, and only the attached connecting rubber is attached to the bathtub. The bath kettle device according to any one of claims 1 to 5, wherein the bathtub device is configured to be connected to a circulation connection port of the bathtub as a structure to be taken out of the exterior body.