JP3832058B2

JP3832058B2 - Hot water heater

Info

Publication number: JP3832058B2
Application number: JP33260997A
Authority: JP
Inventors: 正山崎; 健吉橋戸; 村上　　茂
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 1997-12-03
Filing date: 1997-12-03
Publication date: 2006-10-11
Anticipated expiration: 2017-12-03
Also published as: JPH11166743A

Description

【０００１】
【発明の属する技術分野】
本発明は温水を用いて室内の暖房を行う温水暖房装置に関するものである。
【０００２】
【従来の技術】
一般にこの種の温水暖房装置には図７に示すように室外に温水を供給する熱源機１を設け、この温水を熱源機１に内蔵する温水循環手段により温水配管を介して室内に設置した熱交換器２ａと温風ファン２ｂを内蔵する放熱機２に循環し、温風ファン２ｂからの送風を熱交換して温風を吹き出し室内を暖房する温風暖房方式や、断熱材料等によって形成されたパネルの内部に温水を循環する放熱パイプ３ａを埋設して構成した床暖房パネル３に前記熱源機より温水を供給して部屋を暖房する床暖房方式や、前記放熱機２と床暖房パネル３に同一の熱源機１より、同時に温水を供給して部屋を暖房する温風暖房と床暖房の併用暖房方式などがある。そして、放熱機２のみを用いた温風暖房運転時は熱源機１で作られた高温の温水を直接放熱機２に供給して暖房を行うため問題はないが、床暖房パネル３を用いた床暖房運転時は熱源機１で作られる温水を直接供給すると温度が高すぎるため、温水配管の途中に流量を調節する流量調節バルブ４を設けたりして温水の温度を下げてから床暖房パネル３に供給するようにしている。また、温風暖房と床暖房を併用して運転する場合は、高温の温水を必要とする温風暖房と低い温度の温水で暖房する床暖房が同一の温水経路に接続されているため、熱源機１から床暖房パネル３に供給する温水配管の途中に流量を調節する流量調節バルブ４を設けたり、この温水の温度に応じて自動的に流量を調節する温調弁を設けたり、また床暖房パネルに供給する温水を間欠的に行うなどして、放熱機２側には高温の温水を供給し、床暖房パネル３側には床暖房に適した温度に調節した温水を供給するようにしている。また、近年では上記併用暖房運転の構成として、温風暖房経路と床暖房経路をそれぞれ独立して設け、高温の温水が循環する温風暖房経路の温水で床暖房経路の温水を間接的に加熱して床暖房に適した温水を確保するという構成も考案されている。
【０００３】
このように、床暖房に用いる温水の温度は６０℃以下が適当であるのに対し、熱源機１から供給される温水の温度は約８０℃と高いため、床暖房単独運転時や温風暖房との併用運転時は床暖房パネル３側に供給する温水の温度を下げるべく、上記したような構成が採られていた。
【０００４】
【発明が解決しようとする課題】
しかしながら、従来のように床暖房パネルに供給する温水の温度を床暖房経路に設けた流量調節バルブや温調弁で流量を調節して行うという方法では床暖房に適した約６０℃の温水温度を確保するためには極端に流量を制限し、ゆっくりとした速度で温水を循環させる必要がある。このため、床暖房パネルでは放熱状態が入口部から出口部にかけて比較的大きく変化する状態を示し、入口部と出口部の温度差が極端に大きくなる。つまり、床暖房パネル内における温度分布が極めて悪くなり、入口部近傍では暖かく感じるが、出口部近傍になるほど寒く感じることになる。
【０００５】
また、微少流量に調整するということから変動要因が多く、流量調整バルブの変動や温水循環用ポンプの圧力変動等でも流量が微妙に変動し、温水温度が大きく変動することになって床暖房パネルの温度に影響することになる。
【０００６】
また、温風暖房経路の温水で床暖房経路の温水を間接的に加熱するというものにおいては温水温度は比較的安定して確保できるが、暖房経路が２回路必要になり構成が複雑になるとともに床暖房経路の温水を確保するときは、必ず温風暖房経路の運転が必要となり、温風暖房をしない場合でも運転をしておかなければならないという使い勝手の極めて悪いものであった。
【０００７】
本発明は上記問題点を解決し、温風暖房と床暖房を１つの温水回路で併用運転するような場合でも温風暖房に必要な高温の温水と床暖房に適した温度の低い温水をそれぞれ安定して供給することを目的としている。
【０００８】
【課題を解決するための手段】
本発明は上記の課題を解決するためなされたものであり、温水を供給する熱源機と、前記温水を熱交換し暖められた空気を送風機で室内に送出する放熱機と、前記温水を循環して室内を暖房する床暖房パネルからなる放熱機と、前記熱源機と各放熱機との間を温水を循環する温水配管からなる温水経路を備え、前記熱源機と床暖房パネルからなる放熱機を接続する温水経路の適所に、往き側の温水を戻り側の温水で熱交換させるようにした温水熱交換器を設け、前記温水熱交換器は内側に高温の温水が流れる温水経路を配し、その周囲を満たすように低温の温水が流れる温水経路を設け密閉された缶体構造よりなるものである。
【０００９】
上記発明によれば、熱源機より供給される高温の往き側温水は、温水熱交換器により床暖房パネルからなる放熱機を経由して温度が下がった戻り側温水で熱交換されことになり、前記温水熱交換器の往き側出口部温度、すなわち床暖房パネルからなる放熱機の入口側温度は低下することになり、所望の温度の温水を供給することが可能となる。
【００１０】
反対に、床暖房パネルからなる放熱機への戻り側温水温度は前記温水熱交換器により床暖房パネルからなる放熱機の出口部温度より上昇した状態で戻ることになるため、熱源機の燃費が改善されることになる。
【００１１】
また、床暖房パネルには温度の低い温水を供給し、放熱機側には熱源機より直接高温の温水を供給することができるので、同一経路において異なる温度の温水を確保するのに複雑な構成を必要とせず、簡単な構成で安定して所望の温水を供給することができる。
【００１２】
そして、熱源機から供給される高温の往き側温水経路を内側に配し、その周囲を満たすように放熱装置で損失した温度の低い戻り側温水経路を所定の容量を確保するように缶体構造とすることで、往き側温水と戻り側温水の熱交換を効果的におこなうことができ床暖房等で要望される温度の低い温水を確保することができる。
【００１３】
【発明の実施の形態】
本発明の請求項１の発明は温水を供給する熱源機と、前記温水を熱交換し暖められた空気を送風機で室内に送出する放熱機と、前記温水を循環して室内を暖房する床暖房パネルからなる放熱機と、前記熱源機と各放熱機との間を温水を循環する温水配管からなる温水経路を備え、前記熱源機と床暖房パネルからなる放熱機を接続する温水経路の適所に、往き側の温水を戻り側の温水で熱交換させるようにした温水熱交換器を設け、前記温水熱交換器は内側に高温の温水が流れる温水経路を配し、その周囲を満たすように低温の温水が流れる温水経路を設け密閉された缶体構造よりなるようにしている。
【００１４】
そして、同一経路の往き側温水と戻り側温水を温水配管の途中で熱交換させるように二重構造とした温水熱交換器を設けることで、往き側温水の温度を下げ、戻り側温水の温度を上昇させるようにすることができるため、微少流量にして温水温度を調節するという煩わしい作業を必要とせず、温度の低い温水で暖房をする床暖房への温水供給が可能となり、さらに戻り側温水温度を上昇するため熱源機の燃費も改善することができる。
【００１５】
そして、放熱機を用いた温風暖房と床暖房パネルに温水を循環して暖房する床暖房を同一経路で併用運転する場合、床暖房側の温水配管の途中に往き側温水と戻り側温水を熱交換させるように二重構造とした温水熱交換器を設けることで、床暖房パネルには温度の低い温水を供給し、放熱機側には熱源機より直接高温の温水を供給することができる。このように、同一経路において異なる温度の温水を確保するのに複雑な構成を必要とせず、簡単な構成で安定して所望の温水を供給することができる。
【００１６】
また、温水熱交換器は内側に高温の温水が流れる温水経路を配し、その周囲を満たすように低温の温水が流れる温水経路を設けた密閉された缶体構造としている。
【００１７】
そして、熱源機から供給される高温の往き側温水経路を内側に配し、その周囲を満たすように放熱機で損失した温度の低い戻り側温水経路を所定の容量を確保するように缶体構造とすることで、往き側温水と戻り側温水の熱交換を効果的におこなうことができ床暖房で要望される温度の低い温水を確保することができる。
【００１８】
また、請求項２の発明は温水熱交換器は内側にパイプを螺旋状にした温水管を設け、その周囲を温水が満たすような缶体構造とし、前記温水管と缶体にはそれぞれ温水配管と接続を行う入出口接続部を設けている。
【００１９】
そして、温水熱交換器の内側に配した往き側温水経路を螺旋状にしたパイプで形成することで、戻り側温水との熱交換面積を増大して、コンパクトな形状で効果的に熱交換を行うようにしている。
【００２０】
また、請求項３の発明は温水熱交換器は内側にパイプと放熱フィンで構成する熱交換部を設け、その周囲を温水が満たすような缶体構造とし、前記熱交換部と缶体にはそれぞれ温水配管との接続を行う入出口接続部を設けている。
【００２１】
そして、温水熱交換器の内側に配した往き側温水管に熱交換用の放熱フィンを取り付け、戻り側温水との熱交換面積をより増大させることで、熱交換効率を改善しコンパクト化を図ることができる。
【００２２】
また、請求項４の発明は温水熱交換器の缶体は断熱構造としている。そして、戻り温水経路を形成する缶体は樹脂材料等を用いた断熱構造とすることで、缶体からの放熱を抑制し、戻り側の温水温度が低下するのを防止して、効果的な熱交換を行うようにしている。
【００２３】
また、請求項５の発明は温水熱交換器の入出口接続部は入口側接続部と出口側接続部を対向するような位置に設けている。
【００２４】
そして、温水熱交換器内における往き側温水と戻り側温水が全体的に熱交換するようにし、戻り側温水経路のショートサーキットによる不完全な熱交換を防止することで効果的に熱交換を行うようにしている。
【００２５】
また、請求項６の発明は温水熱交換器は、温水管両端および缶体に設けた入出口接続部のいずれか１箇所またはその近傍の温水配管に流量調節バルブを設け、循環流量が調節できるようにしている。
【００２６】
そして、温水熱交換器を流れる流量を調節することで、床暖房パネル等の放熱装置に供給する温水の温度を調節することができるため、床暖房パネルの容量などに応じて容易に温度調節が可能となり、使い勝手が極めて向上するものである。
【００２７】
【実施例】
以下本発明の実施例について図面に基づき説明する。
【００２８】
（実施例１）
まず、図１を用いて本発明の実施例１の温水暖房装置の構成を説明する。
【００２９】
２１は温水を供給するための熱源機、２２は前記温水を循環し放熱して暖房するための放熱機で放熱パイプ２２ａが埋設されている。２３は熱源機２１より放熱機２２に温水を供給するための往き側温水経路、２４は放熱機２２からの温水を熱源機１に戻すための戻り側温水経路、２５は往き側温水経路２３と戻り側温水経路２４を二重構造とし、往き側温水を戻り側温水で熱交換するようにした温水熱交換器で、内側に高温の温水が流れる往き側温水経路２３で構成した熱交換部２５ａと、その周囲を満たすように戻り側温水を貯湯する缶体２５ｂで構成し、前記熱交換部２５ａには熱源機２１側に往き側入口接続部２５ｃを備え、放熱機２２側には往き側出口接続部２５ｄが設けられている。また、缶体２５ｂにも放熱機２２側に戻り側入口接続部２５ｅを備え、熱源機２１側には戻り側出口接続部２５ｆが設けられている。そして、前記戻り側入口接続部２５ｅと戻り側出口接続部２５ｆは対向するような位置に設けるようにして、戻り側温水が温水熱交換器２５内でショートサーキットを形成するのを防止するようにしている。
【００３０】
また、前記缶体２５ｂは樹脂材料などを用いた断熱構造とし、戻り側温水の放熱を抑制するようにしている。
【００３１】
次に、上記のように構成された温水暖房装置の動作について説明する。
【００３２】
まず、熱源機２１で所定温度の温水が作られ、熱源機２１に備えられた循環ポンプ（図示せず）で往き側温水経路２３を経由して、放熱機２２に搬送される。そして、放熱装置２２に埋設された放熱パイプ２２ａに温水が流れるときの放熱による熱で暖房する。そして、この放熱機２２による室内での放熱により熱源機２１より供給された温水は温度を下げて戻り側温水経路２４より再度熱源機２１に戻る。この温水の循環を繰り返すことで暖房を継続する訳であるが、床暖房などのように床に敷設して使用者が直に触れて暖房をとるような放熱機２２の場合は、熱源機２１で作った温水を直接供給すると温度が高すぎて使用者は暑く感じ不快感を持つものであった。このため往き側温水経路２３と戻り側温水経路２４を二重構造とした温水熱交換器２５を放熱装置２２の循環経路に配して、放熱機２２に供給する温水の温度を下げるようにしている。つまり、温水熱交換器２５には往き側温水が流れる熱交換部２５ａとその周囲を満たすように放熱装置２２で温度が下がった戻り側温水が流れる缶体２５ｂを備え、熱源機２１より供給される高温の温水を温度の下がった戻り側温水により熱交換するようにして、温水熱交換器２５の往き側入口接続部２５ｃの高温の温水を熱交換して往き側出口接続部２５ｄより温度を下げて放熱装置２２に供給し、放熱機２２でさらに低下した温水を戻り側入口接続部２５ｅより温水熱交換器２５の缶体２５ｂに流入し、熱交換部２５ａとの熱交換で温度を上昇させて戻り側出口接続部２５ｆより熱源機２１に戻すようにしている。
【００３３】
図２は各部の温度状態を経時的に示すもので、上記動作時における温水温度の変化特性を示したものである。つまり、特性（Ａ）は往き側入口接続部２５ｃの温水温度を示し、特性（Ｂ）は往き側出口接続部２５ｄすなわち放熱機２２に供給される温水温度の状態を示し、特性（Ｃ）は戻り側入口接続部２５ｅの温水温度を示し、特性（Ｄ）は戻り側出口接続部２５ｆすなわち熱源機２１への戻り側温水の温度を示すものである。
【００３４】
このように、往き側の温水と戻り側の温水を熱交換させる構成とすることで、複雑な温水回路の構成を必要とせず、また、微少な流量調節で温水温度の制御をする必要がなくなるため、温水回路の簡素化と安定した温水温度の確保が可能となり、さらに、熱源機２１への戻り側の温水も上昇させることができるため燃費の改善にも多大な効果を奏するものである。
【００３５】
また、運転初期は特性（Ｂ）の温水温度の変化でも判るように高温の温水が放熱装置２２に供給されることになるため、暖房の立ち上がり特性も極めて良好な特性を示し、使用感においても多大な効果を奏するものである。
【００３６】
（実施例２）
まず、図３を用いて本発明の実施例２の温水暖房装置の構成を説明する。
【００３７】
実施例１と同一部分は同一番号を付与して説明を省略する。
【００３８】
実施例２は１台の熱源機２１で約８０℃の温水を供給して温風暖房を行う放熱機２６と、約６０℃の温水を供給して床暖房パネルで暖房を行う放熱機２２を併用運転する場合の温水暖房装置に関するものである。
【００３９】
放熱機２６は温水を熱交換するための熱交換器２６ａと室内空気を吸引し温風を送出する温風ファン２６ｂ等を備えた放熱機で、熱源機２１と往き側温水経路２３ｂおよび戻り側温水経路２４ｂにより循環経路を構成している。２２は内部に放熱パイプ２２ａを埋設した床暖房パネルからなる放熱機で、熱源機２１と往き側温水経路２３ａおよび戻り側温水経路２４ａにより循環経路を構成している。２５は前記床暖房パネルからなる放熱機２２の循環経路の往き側温水経路２３ａと戻り側温水経路２４ａを二重構造とし、往き側温水を戻り側温水で熱交換するようにした温水熱交換器で、内側に高温の温水が流れる往き側温水経路２３ａで構成した熱交換部２５ａと、その周囲を満たすように戻り側温水を貯湯する缶体２５ｂで構成している。
【００４０】
次に、上記のように構成された温水暖房装置の動作について説明する。
【００４１】
まず、熱源機２１で所定温度の温水が作られ、熱源機２１に備えられた循環ポンプ（図示せず）で往き側温水経路２３ａ、２３ｂを経由して、床暖房パネルからなる放熱機２２と放熱機２６に搬送される。そして、放熱機２６では熱交換器２６ａで吸引された室内空気が熱交換され温風ファン２６ａにより室内に温風として送出され、室内の暖房が行われる。この温風暖房の場合は比較的高温の温風が要求されるため温水温度も熱源機２１より供給される高温の温水を熱交換器２６ａを介して循環させることで満足できる。
【００４２】
しかし、床暖房パネルからなる放熱機２２に供給される温水は温度が高すぎると実施例１でも述べたように使用者は暑く感じ不快感を持つものである。このため床暖房パネルからなる放熱機２２の循環経路には往き側温水経路２３ａと戻り側温水経路２４ａを二重構造とした温水熱交換器２５を配して、放熱機２２に供給する温水の温度を下げるようにしている。つまり、温水熱交換器２５には往き側温水が流れる熱交換部２５ａとその周囲を満たすように放熱装置２２で温度が下がった戻り側温水が流れる缶体２５ｂを備え、熱源機２１より供給される高温の温水を温度の下がった戻り側温水により熱交換するようにしている。
【００４３】
そして、放熱機２２に供給する温水温度を下げるとともに熱源機２１に戻る戻り側温水温度を上昇するようにしている。
【００４４】
このように、温風暖房を行う放熱機２６と床暖房を行う放熱機２２を同時併用運転する場合でもその目的に応じた温度の温水を複雑な温水回路構成を用いることなく、安定して供給することができるものである。
【００４５】
（実施例３）
まず、図４を用いて本発明の実施例３の温水暖房装置の温水熱交換器の構成を説明する。
【００４６】
実施例１と同一部分は同一番号を付与して説明を省略する。
【００４７】
実施例３は温水熱交換器２５の具体的構成を示すものである。
【００４８】
２５ｇは熱交換部２５ａを構成する螺旋状に構成した温水管で、缶体２５ｂ内に配設され、両端に往き側入口接続部２５ｃと往き側出口接続部２５ｄに接続されている。また、この温水管２５ｇはその周囲を戻り側入口接続部２５ｅと戻り側出口接続部２５ｆより流入出する戻り側温水により満たされた状態となり、温水管２５ｇ内を流れる往き側温水は前記戻り側温水により熱交換される。
【００４９】
次に、上記構成においてその作用を説明する。
【００５０】
まず、熱源機２１より供給される高温の往き側温水は往き側入口接続部２５ｃより流入し螺旋状に構成した温水管２５ｇを通って往き側出口接続部２５ｄより流出する。この流出した温水は床暖房パネル等の放熱機２２を経由して再度温水熱交換器２５の缶体２５ｂ側に設けた戻り側入口接続部２５ｅより流入し、缶体２５ｂ内を通って戻り側出口接続部２５ｆより流出する。そして、熱源機２１の戻り側に戻る。このとき温水熱交換器２５では螺旋状に構成した温水管２５ｇ内を流れる温水が缶体２５ｂ内の戻り側温水により熱交換されて、温度を下げて往き側出口接続部２５ｄより流出し、缶体２５ｂ内の戻り側温水は温度を上昇して戻り側出口接続部２５ｆより流出する。
【００５１】
また、熱交換部２５ａを構成する温水管２５ｇを螺旋状に構成することで、戻り側温水との熱交換面積を増大させることができ、温水熱交換器２５のコンパクト化が図れるものである。
【００５２】
このように、温水管２５ｇを螺旋状にして熱交換部２５ａを構成することで、温水熱交換器２５のコンパクト化が図れるとともに床暖房パネルからなる放熱機２２へ供給する温水の温度を下げ、熱源機２１への戻り側温水の温度を上昇させるという効果的な熱交換が行えるものである。
【００５３】
（実施例４）
まず、図５を用いて本発明の実施例４の温水暖房装置の温水熱交換器の構成を説明する。
【００５４】
実施例１と同一部分は同一番号を付与して説明を省略する。
【００５５】
実施例４は温水熱交換器２５の別の具体的構成を示すものである。
【００５６】
２５ｈは缶体２５ｂ内に設けられた往き側温水が流れる温水管で、放熱フィン２５ｉが取り付けられ、両端に往き側入口接続部２５ｃと往き側出口接続部２５ｄに接続されている。また、この温水管２５ｈはその周囲を戻り側入口接続部２５ｅと戻り側出口接続部２５ｆより流入出する戻り側温水により満たされた状態となり、温水管２５ｈ内を流れる往き側温水は前記戻り側温水により熱交換される。
【００５７】
次に、上記構成においてその作用を説明する。
【００５８】
まず、熱源機２１より供給される高温の往き側温水は往き側入口接続部２５ｃより流入し放熱フィン２５ｉを取り付けた温水管２５ｈを通って往き側出口接続部２５ｄより流出する。この流出した温水は床暖房パネルの放熱機２２を経由して再度温水熱交換器２５の缶体２５ｂ側に設けた戻り側入口接続部２５ｅより流入し、缶体２５ｂ内を通って戻り側出口接続部２５ｆより流出する。そして、熱源機２１の戻り側に戻る。このとき温水熱交換器２５では放熱フィン２５ｉを取り付けた温水管２５ｉ内を流れる温水が缶体２５ｂ内の戻り側温水により熱交換されて、温度を下げて往き側出口接続部２５ｄより流出し、缶体２５ｂ内の戻り側温水は温度を上昇して戻り側出口接続部２５ｆより流出する。
【００５９】
また、熱交換部２５ａを構成する温水管２５ｈに放熱フィン２５ｉを取り付けることで、戻り側温水との熱交換面積をさらに増大して熱交換効率を高め、床暖房パネルからなる放熱機２２に供給する温水をより所望される温度に近づけることができ、かつ温水熱交換器２５のコンパクト化も図れるものである。
【００６０】
このように、温水管２５ｈに放熱フィン２５ｉを取り付けた構成にすることで、温水熱交換器２５のコンパクト化が図れるとともに床暖房パネルからなる放熱機へ供給する温水の温度を下げ、熱源機２１への戻り側温水の温度を上昇させるという効果的な熱交換が行えるものである。
【００６１】
（実施例５）
まず、図６を用いて本発明の実施例５の温水暖房装置の温水熱交換器の構成を説明する。
【００６２】
実施例１と同一部分は同一番号を付与して説明を省略する。
【００６３】
２８は戻り側出口接続部２５ｆに取り付けた流量調節バルブで、温水熱交換器２５を流れる温水量を調節するようにしている。
【００６４】
そして、この温水熱交換器２５を流れる温水量を調節することで、温水管２５ｇ内を流れる往き側温水と缶体２５ｂ内の戻り側温水の熱交換状態を調節するようにして、往き側出口接続部２５ｄより流出する温水の温度を調節し、床暖房パネルからなる放熱機２２に供給するようにしている。
【００６５】
これにより、床暖房パネルの容量などに応じて供給する温水の温度を任意に調節することができ、より使い勝手のよいものとなる。
【００６６】
【発明の効果】
以上説明したように請求項１の発明によれば、温水を供給する熱源機と、前記温水を熱交換し暖められた空気を送風機で室内に送出する放熱機と、前記温水を循環して室内を暖房する床暖房パネルからなる放熱機と、前記熱源機と各放熱機との間を温水を循環する温水配管からなる温水経路を備え、前記熱源機と床暖房パネルからなる放熱機を接続する温水経路の適所に、往き側の温水を戻り側の温水で熱交換させるようにした温水熱交換器を設け、前記温水熱交換器は内側に高温の温水が流れる温水経路を配し、その周囲を満たすように低温の温水が流れる温水経路を設け密閉された缶体構造よりなることで、往き側温水の温度を下げ、戻り側温水の温度を上昇させるようにすることができるため、微少流量にして温水温度を調節するという煩わしい作業を必要とせず、温度の低い温水で暖房をする床暖房への温水供給が可能となり、さらに戻り側温水温度を上昇するため熱源機の燃費も改善することができる。
【００６７】
また、放熱機を用いた温風暖房と床暖房パネルに温水を循環して暖房する床暖房を同一経路で併用運転するので、床暖房側の温水配管の途中に往き側温水と戻り側温水を熱交換させるように二重構造とした温水熱交換器を設けることで、床暖房パネルには温度の低い温水を供給し、放熱機側には熱源機より直接高温の温水を供給することができる。このように、同一経路において異なる温度の温水を確保するのに複雑な構成を必要とせず、簡単な構成で安定して所望の温水を供給することができる。
【００６８】
また、熱源機から供給される高温の往き側温水経路を内側に配し、その周囲を満たすように放熱装置で損失した温度の低い戻り側温水経路を所定の容量を確保するように缶体構造とすることで、往き側温水と戻り側温水の熱交換を効果的におこなうことができ床暖房で要望される温度の低い温水を確保することができる。
【００６９】
また、請求項２の発明によれば、温水熱交換器の内側に配した往き側温水経路を螺旋状にしたパイプで形成することで、戻り側温水との熱交換面積を増大して、コンパクトな形状で効果的に熱交換を行うことができる。
【００７０】
また、請求項３の発明によれば、温水熱交換器の内側に配した往き側温水管に熱交換用の放熱フィンを取り付け、戻り側温水との熱交換面積をより増大させることで、熱交換効率を改善しコンパクト化を図ることができる。
【００７１】
また、請求項４の発明によれば、戻り温水経路を形成する缶体を樹脂材料等を用いた断熱構造とすることで、缶体からの放熱を抑制し、戻り側の温水温度が低下するのを防止して、効果的な熱交換を行うことができる。
【００７２】
また、請求項５の発明によれば、温水熱交換器内における往き側温水と戻り側温水が全体的に熱交換するようにし、戻り側温水経路のショートサーキットによる不完全な熱交換を防止することで効果的に熱交換を行うことができる。
【００７３】
また、請求項６の発明によれば、温水熱交換器を流れる流量を調節することで、床暖房パネル等の放熱装置に供給する温水の温度を調節することができるため、床暖房パネルの容量などに応じて容易に温度調節が可能となり、使い勝手を極めて向上することができる。
【図面の簡単な説明】
【図１】本発明の実施例１の温水暖房装置の構成図
【図２】同温水暖房装置の温水熱交換器の各部温水温度を示す図
【図３】本発明の実施例２の温水暖房装置の構成図
【図４】本発明の実施例３の温水暖房装置の温水熱交換器の構成図
【図５】本発明の実施例４の温水暖房装置の温水熱交換器の構成図
【図６】本発明の実施例５の温水暖房装置の温水熱交換器の構成図
【図７】従来の温水暖房装置の構成図
【符号の説明】
２１熱源機
２２，２６放熱機
２３往き側温水経路
２４戻り側温水経路
２５温水熱交換器
２５ａ熱交換部
２５ｂ缶体
２５ｇ温水管
２５ｈ温水管
２５ｉ放熱フィン
２６放熱機
２７床暖房パネル
２８流量調節バルブ[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a hot water heater that heats a room using hot water.
[0002]
[Prior art]
  In general, this type of hot water heating apparatus is provided with a heat source unit 1 for supplying hot water to the outside as shown in FIG. 7, and this hot water is installed in the room through hot water piping by means of hot water circulation means built in the heat source unit 1. The heat exchanger 2a and the hot air fan 2b are circulated to the radiator 2 and are formed by a hot air heating system in which heat is blown from the hot air fan 2b to blow out hot air to heat the room, or by a heat insulating material. A floor heating system in which warm water is supplied from the heat source unit to a floor heating panel 3 configured by burying a heat radiating pipe 3a for circulating hot water inside the panel, or the radiator 2 and the floor heating panel 3 In addition, there is a combined heating method of hot air heating and floor heating in which hot water is supplied simultaneously from the same heat source unit 1 to heat the room. And at the time of the warm air heating operation using only the radiator 2, there is no problem because the high temperature hot water produced by the heat source unit 1 is directly supplied to the radiator 2 for heating, but the floor heating panel 3 is used. During the floor heating operation, if the hot water produced by the heat source unit 1 is supplied directly, the temperature will be too high, so the floor heating panel will be lowered after the temperature of the hot water is lowered by installing a flow rate adjustment valve 4 to adjust the flow rate in the middle of the hot water piping. 3 is supplied. Also, when operating with both hot air heating and floor heating, the hot air heating that requires hot water and the floor heating that uses low temperature hot water are connected to the same hot water path. A flow rate adjustment valve 4 for adjusting the flow rate is provided in the middle of the hot water piping supplied from the machine 1 to the floor heating panel 3, a temperature control valve for automatically adjusting the flow rate according to the temperature of the hot water, Hot water supplied to the heating panel is intermittently supplied so that high-temperature hot water is supplied to the radiator 2 side and hot water adjusted to a temperature suitable for floor heating is supplied to the floor heating panel 3 side. ing. Also, in recent years, as a configuration of the combined heating operation, a hot air heating path and a floor heating path are provided independently, and the hot water of the floor heating path is indirectly heated by the hot water of the hot air heating path through which high-temperature hot water circulates. And the structure of ensuring the hot water suitable for floor heating is also devised.
[0003]
  Thus, while the temperature of hot water used for floor heating is suitably 60 ° C. or lower, the temperature of hot water supplied from the heat source unit 1 is as high as about 80 ° C. During the combined use operation, the above-described configuration has been adopted in order to lower the temperature of the hot water supplied to the floor heating panel 3 side.
[0004]
[Problems to be solved by the invention]
  However, in the conventional method in which the temperature of the hot water supplied to the floor heating panel is adjusted by adjusting the flow rate with a flow control valve or a temperature control valve provided in the floor heating path, the hot water temperature of about 60 ° C. suitable for floor heating is used. It is necessary to limit the flow rate extremely and circulate hot water at a slow speed in order to ensure this. For this reason, in the floor heating panel, the heat radiation state changes relatively greatly from the inlet portion to the outlet portion, and the temperature difference between the inlet portion and the outlet portion becomes extremely large. That is, the temperature distribution in the floor heating panel becomes extremely poor, and it feels warm near the entrance, but feels colder as it approaches the exit.
[0005]
  In addition, there are many fluctuating factors because the flow rate is adjusted to a minute flow rate, and the flow rate slightly fluctuates due to fluctuations in the flow rate adjustment valve and pressure fluctuation of the hot water circulation pump. Will affect the temperature.
[0006]
  Further, in the case where the hot water in the floor heating path is indirectly heated by the hot water in the hot air heating path, the hot water temperature can be secured relatively stably, but the heating path requires two circuits and the configuration becomes complicated. When securing hot water in the floor heating path, it is necessary to operate the hot air heating path, and it is extremely inconvenient that it must be operated even when hot air heating is not performed.
[0007]
  The present invention solves the above-described problems, and even when hot air heating and floor heating are operated in combination with one hot water circuit, hot water required for hot air heating and hot water having a low temperature suitable for floor heating are respectively provided. The purpose is to provide a stable supply.
[0008]
[Means for Solving the Problems]
  The present invention has been made to solve the above problems,A heat source device for supplying hot water, a radiator for exchanging heat from the warm water and sending out the warmed air to the room with a blower, a radiator comprising a floor heating panel for circulating the hot water to heat the room, and the heat source A hot water path consisting of hot water piping that circulates hot water between the radiator and each radiator, and the warm water on the return side is placed on the return side at the appropriate location of the hot water path connecting the heat source machine and the radiator consisting of the floor heating panel. A hot water heat exchanger designed to exchange heat with hot water is provided, and the hot water heat exchanger is provided with a hot water path through which high-temperature hot water flows inside, and a hot water path through which low-temperature hot water flows so as to fill the surroundings. Made of a can structureIs.
[0009]
  According to the above-described invention, the high-temperature forward-side hot water supplied from the heat source machine is heated by the hot water heat exchanger.Radiator consisting of floor heating panelThe heat is exchanged with the return-side hot water whose temperature has decreased via the temperature of the outlet side of the hot water heat exchanger, that is,Radiator consisting of floor heating panelThe inlet side temperature of the water will be lowered, and hot water having a desired temperature can be supplied.
[0010]
  Conversely,Radiator consisting of floor heating panelReturn side hot water temperature to the hot water heat exchangerRadiator consisting of floor heating panelThus, the fuel consumption of the heat source machine is improved.
[0011]
  Also, warm water with low temperature can be supplied to the floor heating panel, and hot water with high temperature can be supplied directly to the radiator side from the heat source device, so it is complicated to secure hot water with different temperature in the same route The desired hot water can be stably supplied with a simple configuration.
[0012]
  And a can body structure is provided so as to secure a predetermined capacity of the return side hot water path having a low temperature lost by the heat radiating device so as to fill the periphery of the high temperature forward side hot water path supplied from the heat source device. By doing so, heat exchange of the outgoing hot water and the return hot water can be performed effectively, and hot water having a low temperature required for floor heating or the like can be secured.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
  The invention of claim 1 of the present inventionA heat source device for supplying hot water, a radiator for exchanging heat from the warm water and sending out the warmed air to the room with a blower, a radiator comprising a floor heating panel for circulating the hot water to heat the room, and the heat source A hot water path consisting of hot water piping that circulates hot water between the radiator and each radiator, and the warm water on the return side is placed on the return side at the appropriate location of the hot water path connecting the heat source machine and the radiator consisting of the floor heating panel. A hot water heat exchanger designed to exchange heat with hot water is provided, and the hot water heat exchanger is provided with a hot water path through which high-temperature hot water flows inside, and a hot water path through which low-temperature hot water flows so as to fill the surroundings. Made of a can structureI am doing so.
[0014]
  The temperature of the return-side hot water is lowered by providing a double-structured hot-water heat exchanger that exchanges heat between the return-side hot water and the return-side hot water in the middle of the hot water piping. Therefore, it is possible to supply hot water to floor heating that is heated with low-temperature hot water without the troublesome work of adjusting the temperature of the hot water with a small flow rate. Since the temperature rises, the fuel consumption of the heat source machine can also be improved.
[0015]
  And when using both the warm air heating with a radiator and the floor heating that circulates and warms the floor heating panel in the same route, the outgoing hot water and the return hot water are placed in the middle of the hot water piping on the floor heating side. By providing a hot water heat exchanger with a double structure so as to exchange heat, warm water with low temperature can be supplied to the floor heating panel, and hot water with high temperature can be supplied directly to the radiator side from the heat source device. . As described above, a complicated configuration is not required to secure hot water having different temperatures in the same path, and desired hot water can be stably supplied with a simple configuration.
[0016]
  Also hot water heat exchangerHas a hot water path through which high temperature hot water flows, and has a sealed can structure with a hot water path through which low temperature hot water flows so as to fill the periphery.
[0017]
  And the can body structure is arranged so that the high-temperature forward-side hot water path supplied from the heat source unit is arranged inside, and the low-temperature return-side hot water path lost by the radiator is filled so as to satisfy the surrounding area. By doing so, heat exchange of the outgoing hot water and the return hot water can be performed effectively, and hot water having a low temperature required for floor heating can be secured.
[0018]
  Also,Claim 2According to the present invention, the hot water heat exchanger is provided with a hot water pipe having a spiral pipe inside, and a can structure in which the hot water is filled with the hot water pipe, and the hot water pipe and the can body are respectively connected to the hot water piping. An outlet connection is provided.
[0019]
  And by forming the outgoing side hot water path arranged inside the hot water heat exchanger with a spiral pipe, the heat exchange area with the return side hot water is increased, and heat exchange is effectively performed in a compact shape. Like to do.
[0020]
  Also,Claim 3According to the invention, the hot water heat exchanger is provided with a heat exchanging portion composed of a pipe and a radiation fin on the inside, and a can structure in which the hot water is filled with the heat exchanging portion. An entry / exit connection for connection is provided.
[0021]
  Then, heat exchange fins are attached to the outgoing hot water pipes arranged inside the hot water heat exchanger, and the heat exchange area with the return hot water is further increased, thereby improving the heat exchange efficiency and downsizing. be able to.
[0022]
  Also,Claim 4In the present invention, the can body of the hot water heat exchanger has a heat insulating structure. And the can body forming the return hot water path has a heat insulating structure using a resin material or the like, thereby suppressing heat dissipation from the can body, preventing the return-side hot water temperature from being lowered, and effective. Heat exchange is performed.
[0023]
  Also,Claim 5In the invention, the inlet / outlet connection portion of the hot water heat exchanger is provided at a position where the inlet side connection portion and the outlet side connection portion face each other.
[0024]
  In addition, heat exchange is effectively performed by preventing the incomplete heat exchange by the short circuit of the return side hot water path so that the return side hot water and the return side hot water in the hot water heat exchanger exchange heat as a whole. I am doing so.
[0025]
  Also,Claim 6According to the present invention, the hot water heat exchanger is provided with a flow rate adjusting valve in one of the hot water pipes at or near one of the hot water pipe ends and the inlet / outlet connection portion provided in the can so that the circulating flow rate can be adjusted.
[0026]
  And by adjusting the flow rate through the hot water heat exchanger, the temperature of the hot water supplied to the heat radiating device such as the floor heating panel can be adjusted, so the temperature can be easily adjusted according to the capacity of the floor heating panel, etc. It becomes possible and the usability is extremely improved.
[0027]
【Example】
  Embodiments of the present invention will be described below with reference to the drawings.
[0028]
  (Example 1)
  First, the structure of the hot water heating apparatus of Example 1 of this invention is demonstrated using FIG.
[0029]
  Reference numeral 21 denotes a heat source unit for supplying hot water, and 22 is a radiator for circulating the hot water to radiate heat for heating, in which a radiating pipe 22a is embedded. 23 is a forward side hot water path for supplying hot water from the heat source unit 21 to the radiator 22, 24 is a return side hot water path for returning the hot water from the radiator 22 to the heat source unit 1, and 25 is a forward side hot water path 23. The return side hot water passage 24 has a double structure, and is a hot water heat exchanger configured to exchange heat with the return side hot water using the return side hot water. The heat exchange section 25a is configured by the forward side hot water passage 23 through which high temperature hot water flows. And a can body 25b for storing the return-side hot water so as to fill the periphery thereof, the heat exchanging portion 25a is provided with a forward-side inlet connection portion 25c on the heat source device 21 side, and the forward side on the radiator 22 side. An outlet connection portion 25d is provided. Further, the can body 25b is also provided with a return side inlet connection portion 25e on the radiator 22 side, and a return side outlet connection portion 25f is provided on the heat source device 21 side. The return side inlet connection part 25e and the return side outlet connection part 25f are provided at positions facing each other so as to prevent the return side hot water from forming a short circuit in the hot water heat exchanger 25. ing.
[0030]
  Further, the can body 25b has a heat insulating structure using a resin material or the like so as to suppress heat dissipation of the return side hot water.
[0031]
  Next, the operation of the hot water heating apparatus configured as described above will be described.
[0032]
  First, hot water having a predetermined temperature is produced by the heat source device 21, and conveyed to the radiator 22 via the outgoing hot water path 23 by a circulation pump (not shown) provided in the heat source device 21. And it heats with the heat | fever by heat radiation when warm water flows into the heat radiating pipe 22a embed | buried under the heat radiating device 22. FIG. And the warm water supplied from the heat source device 21 by the heat radiation in the room by the radiator 22 lowers the temperature and returns to the heat source device 21 from the return side hot water path 24 again. Heating is continued by repeating the circulation of the hot water. However, in the case of the radiator 22 that is laid on the floor and heated directly by the user such as floor heating, the heat source device 21 is used. When the hot water made in was directly supplied, the temperature was too high and the user felt hot and uncomfortable. For this reason, a hot water heat exchanger 25 having a double structure of the outgoing hot water path 23 and the return hot water path 24 is arranged in the circulation path of the radiator 22 so as to lower the temperature of the hot water supplied to the radiator 22. Yes. That is, the hot water heat exchanger 25 includes a heat exchanging portion 25a through which the outgoing hot water flows and a can body 25b through which the return hot water whose temperature has been lowered by the heat radiating device 22 so as to fill the surroundings, and is supplied from the heat source unit 21. The high temperature hot water is exchanged with the return side hot water whose temperature is lowered, and the high temperature hot water at the outgoing side inlet connection portion 25c of the hot water heat exchanger 25 is exchanged with heat, and the temperature is changed from the outgoing side outlet connection portion 25d. The hot water further lowered by the heat radiator 22 flows into the can body 25b of the hot water heat exchanger 25 from the return side inlet connection portion 25e, and the temperature is raised by heat exchange with the heat exchange portion 25a. It is made to return to the heat source machine 21 from the return side exit connection part 25f.
[0033]
  FIG. 2 shows the temperature state of each part over time, and shows the change characteristic of the hot water temperature during the above operation. That is, the characteristic (A) indicates the hot water temperature of the outgoing side inlet connection portion 25c, the characteristic (B) indicates the state of the hot water temperature supplied to the outgoing side outlet connection portion 25d, that is, the radiator 22, and the characteristic (C) is The hot water temperature of the return side inlet connection part 25e is shown, and the characteristic (D) shows the temperature of the return side hot water supply to the return side outlet connection part 25f, that is, the heat source unit 21.
[0034]
  In this way, by configuring the heat exchange between the warm water on the outgoing side and the warm water on the return side, it is not necessary to configure a complicated warm water circuit, and it is not necessary to control the warm water temperature with a minute flow rate adjustment. Therefore, the hot water circuit can be simplified and a stable hot water temperature can be secured, and the hot water on the return side to the heat source unit 21 can be raised, which has a great effect on improving fuel consumption.
[0035]
  In addition, high temperature hot water is supplied to the heat radiating device 22 at the initial stage of operation, as can be seen from the change in the hot water temperature in the characteristic (B). It has a great effect.
[0036]
  (Example 2)
  First, the structure of the hot water heating apparatus of Example 2 of this invention is demonstrated using FIG.
[0037]
  The same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
[0038]
  The second embodiment includes a radiator 26 that supplies hot water of about 80 ° C. with one heat source unit 21 to perform hot air heating, and a radiator 22 that supplies hot water of about 60 ° C. and performs heating with a floor heating panel. The present invention relates to a hot water heater in the case of combined operation.
[0039]
  The radiator 26 is a radiator having a heat exchanger 26a for exchanging heat of hot water, a hot air fan 26b for sucking indoor air and sending out hot air, and the like, and includes a heat source device 21, an outgoing hot water path 23b, and a return side. A circulation path is configured by the hot water path 24b. Reference numeral 22 denotes a heat radiator composed of a floor heating panel in which a heat radiating pipe 22a is embedded, and the heat source device 21, the outgoing hot water passage 23a and the return hot water passage 24a constitute a circulation route. Reference numeral 25 denotes a hot water heat exchanger in which the forward side hot water path 23a and the return side hot water path 24a of the circulation path of the radiator 22 comprising the floor heating panel have a double structure, and the forward side hot water is heat-exchanged with the return side hot water. Thus, the heat exchanging portion 25a is configured by the outgoing hot water passage 23a through which the hot water flows at the inner side, and the can body 25b for storing the returning hot water so as to fill the periphery thereof.
[0040]
  Next, the operation of the hot water heating apparatus configured as described above will be described.
[0041]
  First, warm water having a predetermined temperature is produced by the heat source device 21, and a circulation pump (not shown) provided in the heat source device 21 is connected to the radiator 22 including a floor heating panel via the outgoing hot water paths 23a and 23b. It is conveyed to the radiator 26. In the radiator 26, the indoor air sucked by the heat exchanger 26a is heat-exchanged and sent out as hot air to the room by the hot air fan 26a to heat the room. In the case of this hot air heating, since a relatively high temperature hot air is required, the hot water temperature can be satisfied by circulating the high temperature hot water supplied from the heat source unit 21 through the heat exchanger 26a.
[0042]
  However, if the temperature of the hot water supplied to the radiator 22 including the floor heating panel is too high, the user feels hot and uncomfortable as described in the first embodiment. For this reason, a hot water heat exchanger 25 having a double structure of the forward side hot water path 23a and the return side hot water path 24a is arranged in the circulation path of the radiator 22 composed of the floor heating panel, and the hot water supplied to the radiator 22 is arranged. I try to lower the temperature. That is, the hot water heat exchanger 25 includes a heat exchanging part 25a through which the outgoing hot water flows and a can body 25b through which the return hot water whose temperature has been lowered by the heat radiating device 22 flows so as to fill the surroundings. Heat is exchanged between the hot water and the return-side hot water.
[0043]
  Then, the temperature of the hot water supplied to the radiator 22 is lowered and the temperature of the return-side hot water returning to the heat source device 21 is raised.
[0044]
  In this way, even when the radiator 26 that performs hot air heating and the radiator 22 that performs floor heating are operated simultaneously, the hot water having a temperature according to the purpose is stably supplied without using a complicated hot water circuit configuration. Is something that can be done.
[0045]
  (Example 3)
  First, the configuration of the hot water heat exchanger of the hot water heating apparatus according to the third embodiment of the present invention will be described with reference to FIG.
[0046]
  The same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
[0047]
  The third embodiment shows a specific configuration of the hot water heat exchanger 25.
[0048]
  Reference numeral 25g denotes a helical hot water pipe constituting the heat exchanging portion 25a, which is disposed in the can body 25b, and is connected to the forward side inlet connecting portion 25c and the forward side outlet connecting portion 25d at both ends. The hot water pipe 25g is filled with return-side hot water flowing in and out from the return-side inlet connection part 25e and the return-side outlet connection part 25f, and the forward-side hot water flowing in the hot water pipe 25g is returned to the return side. Heat exchange with hot water.
[0049]
  Next, the operation of the above configuration will be described.
[0050]
  First, the high-temperature forward-side hot water supplied from the heat source device 21 flows in from the forward-side inlet connection portion 25c, and flows out of the forward-side outlet connection portion 25d through the spirally configured hot water pipe 25g. The outflowed hot water flows again from the return side inlet connection portion 25e provided on the can body 25b side of the hot water heat exchanger 25 via the radiator 22 such as a floor heating panel, and returns to the return side through the inside of the can body 25b. It flows out from the outlet connection part 25f. And it returns to the return side of the heat source unit 21. At this time, in the hot water heat exchanger 25, the hot water flowing in the spirally configured hot water pipe 25g is heat-exchanged by the return side hot water in the can body 25b, and the temperature is lowered and flows out from the forward side outlet connection portion 25d. The return-side hot water in the body 25b rises in temperature and flows out from the return-side outlet connection portion 25f.
[0051]
  Further, by forming the hot water pipe 25g constituting the heat exchanging portion 25a in a spiral shape, the heat exchange area with the return side hot water can be increased, and the hot water heat exchanger 25 can be made compact.
[0052]
    In this way, by configuring the heat exchange section 25a by spirally forming the hot water pipe 25g, the hot water heat exchanger 25 can be made compact and the temperature of the hot water supplied to the radiator 22 composed of the floor heating panel is lowered, Effective heat exchange in which the temperature of the return-side hot water to the heat source device 21 is increased can be performed.
[0053]
  (Example 4)
  First, the structure of the hot water heat exchanger of the hot water heating apparatus of Example 4 of this invention is demonstrated using FIG.
[0054]
  The same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
[0055]
  Example 4 shows another specific configuration of the hot water heat exchanger 25.
[0056]
  Reference numeral 25h denotes a hot water pipe provided in the can body 25b through which the outgoing hot water flows, and radiating fins 25i are attached to both ends, and connected to the outgoing inlet connecting portion 25c and the outgoing outlet connecting portion 25d. The hot water pipe 25h is filled with return-side hot water flowing in and out from the return-side inlet connecting part 25e and the return-side outlet connecting part 25f, and the outgoing hot water flowing in the hot water pipe 25h is Heat exchange with hot water.
[0057]
  Next, the operation of the above configuration will be described.
[0058]
  First, the high-temperature forward-side hot water supplied from the heat source device 21 flows in from the forward-side inlet connection portion 25c, and flows out of the forward-side outlet connection portion 25d through the hot water pipe 25h to which the radiating fins 25i are attached. The outflowed hot water flows again from the return side inlet connection portion 25e provided on the can body 25b side of the hot water heat exchanger 25 through the radiator 22 of the floor heating panel, and passes through the can body 25b to return the return side. It flows out from the connecting portion 25f. And it returns to the return side of the heat source unit 21. At this time, in the hot water heat exchanger 25, the hot water flowing in the hot water pipe 25i to which the radiation fins 25i are attached is heat-exchanged by the return side hot water in the can body 25b, and the temperature is lowered and flows out from the forward side outlet connection portion 25d. The return-side hot water in the can body 25b rises in temperature and flows out from the return-side outlet connection portion 25f.
[0059]
  Moreover, by attaching the radiation fin 25i to the hot water pipe 25h constituting the heat exchanging portion 25a, the heat exchange area with the return side hot water is further increased to enhance the heat exchange efficiency and supplied to the radiator 22 composed of the floor heating panel. Therefore, the hot water heat exchanger 25 can be made more compact, and the hot water heat exchanger 25 can be made compact.
[0060]
  In this way, by adopting a configuration in which the heat radiating fins 25i are attached to the hot water pipe 25h, the hot water heat exchanger 25 can be made compact, and the temperature of the hot water supplied to the heat radiator composed of the floor heating panel is lowered. It is possible to perform an effective heat exchange that raises the temperature of the return-side hot water.
[0061]
  (Example 5)
  First, the configuration of the hot water heat exchanger of the hot water heating apparatus according to the fifth embodiment of the present invention will be described with reference to FIG.
[0062]
  The same parts as those in the first embodiment are denoted by the same reference numerals and the description thereof is omitted.
[0063]
  Reference numeral 28 denotes a flow rate adjusting valve attached to the return-side outlet connection portion 25f, which adjusts the amount of hot water flowing through the hot water heat exchanger 25.
[0064]
  Then, by adjusting the amount of hot water flowing through the hot water heat exchanger 25, the heat exchange state of the outgoing hot water flowing in the hot water pipe 25g and the return hot water in the can 25b is adjusted, and the outgoing outlet The temperature of the hot water flowing out from the connecting portion 25d is adjusted and supplied to the radiator 22 composed of a floor heating panel.
[0065]
  Thereby, the temperature of the hot water supplied according to the capacity | capacitance of a floor heating panel, etc. can be adjusted arbitrarily, and it becomes more convenient.
[0066]
【The invention's effect】
  As described above, according to the invention of claim 1,A heat source device for supplying hot water, a radiator for exchanging heat from the warm water and sending out the warmed air to the room with a blower, a radiator comprising a floor heating panel for circulating the hot water to heat the room, and the heat source A hot water path consisting of hot water piping that circulates hot water between the radiator and each radiator, and the warm water on the return side is placed on the return side at the appropriate location of the hot water path connecting the heat source machine and the radiator consisting of the floor heating panel. A hot water heat exchanger designed to exchange heat with hot water is provided, and the hot water heat exchanger is provided with a hot water path through which high-temperature hot water flows inside, and a hot water path through which low-temperature hot water flows so as to fill the surroundings. Made of a can structureTherefore, it is possible to lower the temperature of the return-side hot water and increase the temperature of the return-side hot water. doTo floor heatingThis makes it possible to supply hot water, and further raises the return-side hot water temperature, thereby improving the fuel efficiency of the heat source machine.
[0067]
  Also radiatorCombined operation of warm air heating using floor heating and floor heating that circulates hot water through the floor heating panel on the same routeBecauseBy providing a hot water heat exchanger with a double structure to exchange heat between the outgoing hot water and the return hot water in the middle of the hot water piping on the floor heating side, low temperature hot water is supplied to the floor heating panel, Hot water having a high temperature can be directly supplied to the radiator side from the heat source device. As described above, a complicated configuration is not required to secure hot water having different temperatures in the same path, and desired hot water can be stably supplied with a simple configuration.
[0068]
  Heat source machineBy placing the high-temperature forward-side hot water path supplied from the inside, and using a can body structure to ensure a predetermined capacity for the low-temperature return-side hot water path lost by the heat dissipation device so as to fill the surrounding area It is possible to effectively perform heat exchange between the outgoing hot water and the return hot water and to secure hot water having a low temperature required for floor heating.
[0069]
  Also,Claim 2According to the invention, by forming the outgoing hot water path arranged inside the hot water heat exchanger with a spiral pipe, the heat exchange area with the return hot water is increased, and the compact shape is effective. Heat exchange can be performed.
[0070]
  Also,Claim 3According to the invention, heat exchange efficiency is improved by attaching heat-radiating fins to the outgoing hot water pipe arranged inside the hot water heat exchanger and further increasing the heat exchange area with the return hot water. Compactness can be achieved.
[0071]
  Also,Claim 4According to the invention, by making the can body forming the return warm water path into a heat insulating structure using a resin material or the like, heat dissipation from the can body is suppressed, and the warm water temperature on the return side is prevented from being lowered. Effective heat exchange can be performed.
[0072]
  Also,Claim 5According to the invention, the outgoing hot water and the return hot water in the hot water heat exchanger exchange heat as a whole, effectively preventing incomplete heat exchange by a short circuit in the return hot water path. Heat exchange can be performed.
[0073]
  Also,Claim 6According to the invention, the temperature of the hot water supplied to the heat radiating device such as the floor heating panel can be adjusted by adjusting the flow rate flowing through the hot water heat exchanger, so that it is easy depending on the capacity of the floor heating panel. In addition, the temperature can be adjusted and the usability can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a hot water heater according to a first embodiment of the present invention.
FIG. 2 is a diagram showing the temperature of hot water in each part of the hot water heat exchanger of the hot water heater
FIG. 3 is a configuration diagram of a hot water heater according to a second embodiment of the present invention.
FIG. 4 is a configuration diagram of a hot water heat exchanger of a hot water heating apparatus according to a third embodiment of the present invention.
FIG. 5 is a configuration diagram of a hot water heat exchanger of a hot water heating apparatus according to a fourth embodiment of the present invention.
FIG. 6 is a configuration diagram of a hot water heat exchanger of a hot water heating apparatus according to a fifth embodiment of the present invention.
FIG. 7 is a configuration diagram of a conventional hot water heater.
[Explanation of symbols]
  21 Heat source machine
  22, 26 radiator
  23 Outward hot water route
  24 Return side hot water route
  25 Hot water heat exchanger
  25a Heat exchange section
  25b can body
  25g hot water pipe
  25h hot water pipe
  25i Heat radiation fin
  26 Radiator
  27 Floor heating panel
  28 Flow control valve

Claims

A heat source device for supplying hot water, a radiator for exchanging heat from the warm water and sending out the warmed air to the room with a blower, a radiator comprising a floor heating panel for circulating the hot water to heat the room, and the heat source A hot water path consisting of hot water piping that circulates hot water between the radiator and each radiator, and the warm water on the return side is placed on the return side at the appropriate location of the hot water path connecting the heat source machine and the radiator consisting of the floor heating panel. A hot water heat exchanger designed to exchange heat with hot water is provided, and the hot water heat exchanger is provided with a hot water path through which high-temperature hot water flows inside, and a hot water path through which low-temperature hot water flows so as to fill the surroundings. Water heater with a can structure .

The hot water heat exchanger is provided with a hot water pipe with a spiral pipe inside, and a can structure in which the hot water is filled with the surroundings, and the hot water pipe and the can body are connected to the hot water pipe respectively. The hot water heater according to claim 1, which is provided.

The hot water heat exchanger is provided with a heat exchange part composed of pipes and radiating fins on the inside, and the surroundings are filled with hot water, and the heat exchange part and the can body are each connected to hot water piping. The hot water heater according to claim 1 or 2, wherein an inlet / outlet connection is provided.

The hot water heater according to any one of claims 1 to 3 , wherein the can body of the hot water heat exchanger has a heat insulating structure.

The hot water heating apparatus according to claim 2 or 3, wherein the inlet / outlet connection portion of the hot water heat exchanger is arranged at a position where the inlet side connection portion and the outlet side connection portion face each other.

The hot water heating apparatus according to any one of claims 1 to 3 , wherein the hot water heat exchanger is provided with a flow rate adjusting valve so that a circulating flow rate can be adjusted.