JP3841028B2

JP3841028B2 - Instant water heater

Info

Publication number: JP3841028B2
Application number: JP2002209060A
Authority: JP
Inventors: 正満近藤; 文孝菊谷; 範夫菅原; 裕文河島; 豊岡野; 博北西
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2002-07-18
Filing date: 2002-07-18
Publication date: 2006-11-01
Anticipated expiration: 2022-07-18
Also published as: JP2004053077A

Description

【０００１】
【発明の属する技術分野】
本発明は、暖房温水を利用した加熱により給湯管から即時にお湯が出る即時給湯装置に関するものである。
【０００２】
【従来の技術】
従来のこの種の即時給湯装置は特開２０００−１８６２３号公報に記載されているようなものが一般的であった。この即時給湯装置は図１２に示すように、即湯循環回路１に設けた循環ポンプ２により即時給湯用の温水を循環させる。また、温水暖房装置３の循環加熱回路４の暖房温水を加熱源として即湯循環回路１内の温水を加熱する熱交換器５を設けて構成される。
【０００３】
また、他の即時給湯装置としては特開昭６０−２１６１４３号公報に記載されているようなものがある。この即時給湯装置は、図１３に示すように、即時給湯用の入水管６と出湯管７を加熱保温する暖房装置３（トレース温水用加熱バーナ）の循環加熱回路４（トレ
ース温水往き管、戻り管）と、循環ポンプ８とから構成される。
【０００４】
【発明が解決しようとする課題】
しかしながら上記初めの従来の即時給湯装置では、即湯循環回路１と循環ポンプ２を設けて構成されるため装置が大きく重量も重くなりイニシャルコストがアップし、循環ポンプ１を運転することで騒音発生とランニングコストがアップする課題があった。
【０００５】
さらに、上記他の従来の即時給湯装置では、暖房用温水の循環加熱回路４で入水管６と出湯管７の配管水を加熱する構成であるため、給湯機内の給湯加熱開始時の冷めた水が流れてきたときに冷水を温めるバッファとなる温水の貯湯タンクや即湯タンクや加熱熱交換器がないため、一時冷たい水が給湯される課題がある。
【０００６】
本発明は上記課題を解決したもので、給湯端末を開放すればすぐにお湯が出る簡易な構成で本格的な即時給湯装置を提供することを目的とする。
【０００７】
【課題を解決するための手段】
前記従来の課題を解決するために、本発明の即時給湯装置は、給湯熱源部およびこの給湯熱源部に一体構成された暖房熱源部と、入水路を介して送給された水を前記給湯熱源部で加熱し、給湯温水として給湯端末に供給する給湯主配管と、前記暖房熱源部で加熱された暖房温水が暖房端末とこの暖房熱源部との間で循環する循環加熱回路と、前記給湯端末に近いところで暖房温水と給湯温水を熱交換する熱交換装置とを具備し、前記熱交換装置に至る給湯主配管と循環加熱回路とは相互に接触させて循環加熱回路から給湯主配管へ伝熱されるように構成するとともに、それらを断熱材を介して断熱空間に位置させたものであり、簡易で、しかも安価な即時給湯装置を実現できる。
【０００８】
【発明の実施の形態】
本発明の即時給湯装置は、給湯熱源部およびこの給湯熱源部に一体構成された暖房熱源部と、入水路を介して送給された水を前記給湯熱源部で加熱し、給湯温水として給湯端末に供給する給湯主配管と、前記暖房熱源部で加熱された暖房温水が暖房端末とこの暖房熱源部との間で循環する循環加熱回路と、前記給湯端末に近いところで暖房温水と給湯温水を熱交換する熱交換装置とを具備し、前記熱交換装置に至る給湯主配管と循環加熱回路とは相互に接触させて循環加熱回路から給湯主配管へ伝熱されるように構成するとともに、それらを断熱材を介して断熱空間に位置させたもので、したがって、簡易で、しかも安価な即時給湯装置を実現できる。
【０００９】
熱交換装置は、暖房温水が流れる貯湯タンク内に給湯主配管の受熱管を臨ませて構成したもの、循環加熱回路と給湯主配管を相互に接触する扁平管とするとともに、重ねあわせて構成したものが考えられる。
【００１０】
そして、暖房温水が流れる貯湯タンク内に給湯主配管の受熱管を臨ませて熱交換装置を設けたものにあっては、受熱管に吸熱促進部を設けておけば、熱交換効率を高めることができる。
【００１１】
【実施例】
以下、本発明の実施例について図面を用いて説明する。
【００１２】
（実施例１）
図１は本発明実施例１の即時給湯装置のシステム全体構成図であり、図２は即時給湯装置をマンションに設置したときの設置見取り図であり、図３は熱交換器構成図である。
【００１３】
図１〜図３において、１０は屋外等に設置した給湯暖房機であり、給湯熱源部１１と暖房熱源部１２が一体で構成されている。
【００１４】
給湯暖房機１０は、ガス等の燃料とファン１３による燃焼用の空気によりバーナ１４で燃焼熱を発生し、給湯熱源部１１と暖房熱源部１２で水を加熱し熱交換する。給湯熱源部１１へは入水路１５から水が供給され、加熱された後給湯主配管１６を通りカラン１７等から出湯する。
【００１５】
一方暖房熱源部１２で加熱された暖房温水は暖房循環ポンプ１８により循環し室内の温風機や床暖房等に循環する。
【００１６】
幾つかの暖房循環経路の一つに即時給湯用の循環加熱往き回路１９と循環加熱戻り回路２０を設け、屋内の水回りが集中する屋内中心部付近に設けた熱交換装置２１へ暖房温水を循環させる。
【００１７】
このとき、給湯主配管１６は循環加熱往き回路１９と循環加熱戻り回路２０で伝熱関係があるように密接させ、断熱材２２で断熱し鞘管等で配管する。さらに、熱交換装置２１は暖房温水を貯湯する貯湯タンク２３と、給湯主配管１６から入水する給湯用の受熱管である螺旋管２４と、台所や洗面所、お風呂等へ配管する為の給湯ヘッダー２５を設けて構成する。
【００１８】
以上のように構成した即時給湯装置において、床暖房用に約６０℃の低温の暖房温水を暖房循環ポンプ１８で循環し、断熱材２２内で給湯主配管１６を加熱するとともに、熱交換装置２１の貯湯タンク２３内に循環し、螺旋管２４内の給湯水も加熱する。カラン１７を開栓し、お湯を出そうとしたとき、熱交換装置２１を水回りが集中する近傍へ設けており、カラン１７から熱交換装置２１の距離は２〜３メートル程しかないため、初期給湯時の冷めた水である死に水は極わずかであり、すぐに温かいお湯が出湯する。
【００１９】
給湯熱源部１１で冷めていた水も給湯主配管１６の温められていたお湯と、熱交換装置２１の貯湯タンク２３で温められていたお湯とにより加温されるとともに、螺旋管２４で暖房温水により加熱されるためカラン１７から初期のわずかな死に水以外に冷水がでない。すなわち、即時給湯用の専用循環ポンプや即湯用循環回路を設ける必要がないため、省施工、コンパクト、低イニシャルコストと低ランニングコストを実現でき、本格的な即時給湯装置を提供できるものである。
【００２０】
本実施例では給湯暖房機１０を給湯熱源部１１と暖房熱源部１２を一体で構成した例で説明したが、別々の熱源部で構成しても同様の効果を発揮できるものである。また、受熱管を螺旋管としたが、螺旋以外にも湾曲させた管を使用しても同様の効果を発揮できる。
【００２１】
（実施例２）
図４と図５は本発明実施例２における熱交換装置の拡大図である。図４において、実施例１の構成と異なるところは、給湯用の螺旋管２４に吸熱促進部である熱伝導率の高い銅線２６を巻き付けたものである。
【００２２】
このように螺旋管２４に銅線２６を巻き付けることで螺旋管２４の外側の暖房温水の流れを乱す効果と伝熱面積が拡大することにより、熱伝達率が向上し給湯水の加熱速度が上昇し即時給湯の出湯能力がアップする。
【００２３】
ここで、吸熱促進部を銅線２６としたが、フィン付き管や溝付き管としても同様の効果を発揮できるものである。
【００２４】
さらに、図５に示すように給湯ヘッダー２５にフィン２７設けても同様の効果を発揮できる。
【００２５】
（実施例３）
図６は本発明実施例３における即時給湯装置の熱交換装置構成図である。図６において、実施例１の構成と異なるとこは、熱交換装置２１において給湯ヘッダー２５を兼用する即湯タンク２８の外周部２９に暖房温水が循環する伝熱管である螺旋管３０を巻き付けた構成とした点である。
【００２６】
以上のように構成した即時給湯装置において、床暖房用の約６０℃の低温の暖房温水を暖房循環ポンプ１８で循環し、給湯主配管１６と熱交換装置２１の即湯タンク２８を暖房温水が通過する螺旋管３０で加熱する。
【００２７】
カラン１７を開栓し出湯したとき熱交換装置２１を水回りが集中する近傍へ設けているため、死に水はわずかですぐに出湯する。給湯熱源部１１で冷めていた水も給湯主配管１６の温められていたお湯と、熱交換装置２１の即湯タンク２８で温められていたお湯とにより加温されるとともに、螺旋管３０の暖房温水により加熱されるためカラン１７から初期のわずかな死に水以外に冷水がでない。
【００２８】
すなわち、即時給湯用の専用循環ポンプや即湯用循環回路を設ける必要がないため、省施工、コンパクト、低イニシャルコストと低ランニングコストを実現でき、本格的な即時給湯装置を提供できるものである。
【００２９】
ここで、受熱管を螺旋管としたが、螺旋以外にも湾曲させた管を使用しても同様の効果を発揮できる。
【００３０】
（実施例４）
図７は本発明実施例４における熱交換装置の拡大図である。図７において、実施例１と実施例３の構成と異なるところは、即湯タンク２８の外周部２９に凹部３１を設け、凹部３１に螺旋管３０を嵌合して巻き付けたものである。
【００３１】
このように暖房温水が流れる螺旋管３０を凹部３１に沿わせて巻き付けることで伝熱面積が拡大することにより給湯水の加熱速度が上昇し即時給湯の出湯能力がアップする。
【００３２】
（実施例５）
図８は本発明実施例５における即時給湯装置の熱交換装置の構成図である。図８において、実施例１の構成と異なるとこは、熱交換装置２１において給湯水と暖房温水が流れる管が互いに接触した扁平管３２を互いに折り重ねた構成とした点である。
【００３３】
以上のように構成した即時給湯装置において、床暖房用の約６０℃の低温の暖房温水を暖房循環ポンプ１８で循環し、給湯主配管１６と熱交換装置２１の扁平管３２で加熱する。カラン１７を開栓し出湯したとき熱交換装置２１を水回りが集中する近傍へ設けているため、死に水はわずかですぐに出湯する。
【００３４】
給湯熱源部１１で冷めていた水も給湯主配管１６の温められていたお湯と、熱交換装置２１の扁平管３２により加熱されるためカラン１７から初期のわずかな死に水以外に冷水がでない。
【００３５】
すなわち、即時給湯用の専用循環ポンプや即湯用循環回路を設ける必要がないため、省
施工、コンパクト、低イニシャルコストと低ランニングコストを実現でき、本格的な即時給湯装置を提供できるものである。
【００３６】
（実施例６）
図９は本発明実施例６における熱交換装置の構成図である。図９において、実施例１と実施例５の構成と異なるところは、暖房温水と給湯水が流れる扁平管３２を積層した積層扁平管３３を設けたものである。このように暖房温水と給湯水が流れる扁平管３２が積層構造となる積層扁平管３３とすることにより上下の扁平管３２で加熱できるため小さな体積で熱交換装置２１を実現でき伝熱面積が拡大することにより給湯水の加熱速度が上昇し即時給湯の出湯能力がアップする。
【００３７】
（実施例７）
図１０は本発明実施例７における即時給湯装置の熱交換装置の構成図である。図１０において、実施例１の構成と異なるとこは、熱交換装置２１において内側を給湯水が流れ、外側を暖房温水が流れる二重管３４構成とした点である。
【００３８】
以上のように構成した即時給湯装置において、床暖房用の約６０℃の低温の暖房温水を暖房循環ポンプ１８で循環し、給湯主配管１６と熱交換装置２１の二重管３４で加熱する。カラン１７を開栓し出湯したとき熱交換装置２１を水回りが集中する近傍へ設けているため、死に水はわずかですぐに出湯する。
【００３９】
給湯熱源部１１で冷めていた水も給湯主配管１６の温められていたお湯と、熱交換装置２１の二重管３４により加熱されるためカラン１７から初期のわずかな死に水以外に冷水がでない。
【００４０】
すなわち、即時給湯用の専用循環ポンプや即湯用循環回路を設ける必要がないため、省施工、コンパクト、低イニシャルコストと低ランニングコストを実現でき、本格的な即時給湯装置を提供できるものである。
【００４１】
（実施例８）
図１１は本発明実施例８における熱交換装置の構成図である。図１１において、実施例１と実施例７の構成と異なるところは、暖房温水と給湯水が流れる二重管３４に吸熱促進部である溝部３５と銅線３６を設けたものである。
【００４２】
このように暖房温水が流れる内壁に溝部３５を設け、給湯水が流れる外壁に銅線３６を巻き付けることで、水の流れを乱す効果と伝熱面積が拡大することにより、熱伝達率が向上し給湯水の加熱速度が上昇し即時給湯の出湯能力がアップする。
【００４３】
ここで、吸熱促進部を溝部３５と銅線３６としたが、フィン付き管や蛇腹管としても同様の効果を発揮できるものである。
【００４４】
以上各実施例の技術的意義をまとめれば、以下次の通りである。
【００４５】
【発明の効果】
（１）暖房用の温水で給湯主配管を加熱するとともに、貯湯タンクで給湯用の螺旋管と給湯ヘッダーを加熱することから、簡易で安価であるが本格的な即時給湯装置を実現できる。
【００４６】
（２）暖房用の温水で給湯主配管を加熱するとともに、即湯タンクを暖房用の螺旋管で加熱することから、簡易で安価であるが本格的な即時給湯装置を実現できる。
【００４７】
（３）暖房用の温水で給湯主配管を加熱するとともに、給湯水と暖房温水が流れる管が互いに接触した扁平管をつづら折れに設けて加熱することから、簡易で安価であるが本格的な即時給湯装置を実現できる。
【００４８】
（４）暖房用の温水で給湯主配管を加熱するとともに、内側を給湯水が流れ外側を暖房温水が流れる二重管構成として加熱することから、簡易で安価であるが本格的な即時給湯装置を実現できる。
【００４９】
【発明の効果】
このように本発明の即時給湯装置によれば、給湯開始時に速やかに温水をだすことができ、大いにその使い勝手を向上できるものである。
【図面の簡単な説明】
【図１】本発明の実施例１における即時給湯装置のシステム構成図
【図２】同、即時給湯装置をマンションに設置した場合の設置見取り図
【図３】同、即時給湯装置の熱交換装置の断面構成図
【図４】同、即時給湯装置の熱交換装置の要部拡大図
【図５】本発明の実施例２における熱交換装置の断面構成図
【図６】本発明の実施例３における熱交換装置の構成図
【図７】本発明の実施例４における熱交換装置における要部拡大図
【図８】（ａ）本発明実施例５における熱交換装置の平面構成図
（ｂ）（ａ）におけるＡ−Ａ断面図
【図９】（ａ）本発明の実施例６における熱交換装置の平面構成図
（ｂ）同、熱交換装置の側面構成図
【図１０】本発明の実施例７における熱交換装置の構成図
【図１１】本発明の実施例８における熱交換装置の要部拡大図
【図１２】従来の即時給湯装置のシステム構成図
【図１３】従来の他の即時給湯装置のシステム構成図
【符号の説明】
１６給湯主配管
１９、２０循環加熱回路
２１熱交換装置
２２断熱材
２３貯湯タンク
２４、３０螺旋管
２５給湯ヘッダー
２６吸熱促進部
２８即湯タンク
２９外周部
３１凹部
３２扁平管
３３積層扁平管
３４二重管
３５溝部
３６銅線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an immediate hot water supply apparatus in which hot water is immediately discharged from a hot water supply pipe by heating using heating hot water.
[0002]
[Prior art]
Conventional quick water heaters of this type are generally those described in Japanese Patent Application Laid-Open No. 2000-18623. As shown in FIG. 12, this instant hot water supply apparatus circulates hot water for instant hot water supply by a circulation pump 2 provided in the immediate hot water circulation circuit 1. Moreover, the heat exchanger 5 which heats the hot water in the immediate hot water circulation circuit 1 by using the heating hot water of the circulation heating circuit 4 of the hot water heating device 3 as a heating source is provided.
[0003]
Another instant hot water supply apparatus is described in Japanese Patent Application Laid-Open No. 60-216143. As shown in FIG. 13, this immediate hot water supply apparatus has a circulation heating circuit 4 (trace hot water outlet pipe, return) of a heating device 3 (trace hot water heating burner) that heats and keeps the water intake pipe 6 and hot water discharge pipe 7 for immediate hot water supply. Tube) and a circulation pump 8.
[0004]
[Problems to be solved by the invention]
However, in the first conventional instant hot water supply apparatus, since the quick hot water circulation circuit 1 and the circulation pump 2 are provided, the apparatus is large and heavy, the initial cost is increased, and noise is generated by operating the circulation pump 1. And there was a problem that running costs increased.
[0005]
Further, in the other conventional instant hot water supply apparatus, the water in the hot water supply pipe 6 and the hot water discharge pipe 7 are heated by the circulating heating circuit 4 for heating hot water. Since there is no hot water storage tank, instant hot water tank or heating heat exchanger that serves as a buffer for warming the cold water when the water flows, there is a problem that cold water is temporarily supplied.
[0006]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object thereof is to provide a full-fledged immediate hot water supply apparatus with a simple configuration in which hot water is immediately produced when a hot water supply terminal is opened.
[0007]
[Means for Solving the Problems]
In order to solve the above-described conventional problems, an immediate hot water supply apparatus according to the present invention includes a hot water supply heat source unit, a heating heat source unit integrally formed with the hot water supply heat source unit, and water supplied via a water inlet. A hot water supply main pipe that is heated at the heating section and is supplied to the hot water supply terminal as hot water supply hot water , a circulating heating circuit in which the heating hot water heated by the heating heat source section circulates between the heating terminal and the heating heat source section, and the hot water supply terminal A heat exchange device for exchanging heat between the hot water and hot water hot water near the hot water supply pipe, and the hot water supply main pipe and the circulation heating circuit leading to the heat exchange device are in contact with each other to transfer heat from the circulation heating circuit to the hot water supply main pipe. In addition, these are positioned in the heat insulating space via a heat insulating material, and a simple and inexpensive immediate hot water supply device can be realized.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The instant hot water supply apparatus of the present invention includes a hot water supply heat source unit, a heating heat source unit integrally formed with the hot water supply heat source unit, and water supplied via the water inlet channel at the hot water supply heat source unit. A hot water supply main pipe to be supplied to the heating source, a circulating heating circuit in which heating hot water heated by the heating heat source unit circulates between the heating terminal and the heating heat source unit, and heating hot water and hot water hot water near the hot water supply terminal. A hot water supply main pipe leading to the heat exchange apparatus and the circulation heating circuit are configured to be in contact with each other and to transfer heat from the circulation heating circuit to the hot water supply main pipe, and to insulate them. Therefore, an instant hot water supply apparatus that is simple and inexpensive can be realized.
[0009]
The heat exchanging device is constructed by facing the heat receiving pipe of the hot water supply main pipe in the hot water storage tank through which the heated hot water flows, and the circulation heating circuit and the hot water supply main pipe are made to be flat pipes that are in contact with each other, and are configured to overlap each other. Things can be considered.
[0010]
And, in the case where the heat receiving pipe of the hot water supply main pipe is faced in the hot water storage tank through which the heated hot water flows, the heat exchange efficiency can be improved by providing a heat absorption promoting part in the heat receiving pipe. Can do .
[0011]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0012]
Example 1
1 is an overall system configuration diagram of an immediate hot water supply apparatus according to Embodiment 1 of the present invention, FIG. 2 is an installation sketch when the immediate hot water supply apparatus is installed in an apartment, and FIG. 3 is a configuration diagram of a heat exchanger.
[0013]
1 to 3, reference numeral 10 denotes a hot water heater installed outdoors or the like, and a hot water supply heat source unit 11 and a heating heat source unit 12 are integrally formed.
[0014]
The hot water heater 10 generates combustion heat in the burner 14 with fuel such as gas and air for combustion by the fan 13, and heats water by the hot water supply heat source unit 11 and the heating heat source unit 12 to exchange heat. Water is supplied to the hot water supply heat source section 11 from the water inlet 15, and after heating, the hot water is discharged from the currant 17 and the like through the hot water supply main pipe 16.
[0015]
On the other hand, the heated hot water heated by the heating heat source unit 12 is circulated by a heating circulation pump 18 and circulated to an indoor warm air fan or floor heating.
[0016]
A circulation heating forward circuit 19 and a circulation heating return circuit 20 for immediate hot water supply are provided in one of several heating circulation paths, and the heating hot water is supplied to the heat exchange device 21 provided in the vicinity of the center of the indoor area where the indoor water circulation is concentrated. Circulate.
[0017]
At this time, the hot water supply main pipe 16 is brought into close contact with the circulation heating forward circuit 19 and the circulation heating return circuit 20 so as to have a heat transfer relationship, insulated by the heat insulating material 22 and piped by a sheath pipe or the like. Further, the heat exchange device 21 includes a hot water storage tank 23 for storing hot water for heating, a spiral pipe 24 that is a heat receiving pipe for hot water entering from the hot water supply main pipe 16, and hot water for piping to a kitchen, a washroom, a bath, and the like. A header 25 is provided and configured.
[0018]
In the instant hot water supply apparatus configured as described above, heating hot water having a low temperature of about 60 ° C. is circulated by the heating circulation pump 18 for floor heating, the hot water supply main pipe 16 is heated in the heat insulating material 22, and the heat exchange device 21. The hot water is circulated in the hot water storage tank 23 and the hot water in the spiral tube 24 is also heated. When opening the karan 17 and trying to take out hot water, the heat exchanger 21 is provided in the vicinity where the water is concentrated, and the distance from the karan 17 to the heat exchanger 21 is only about 2 to 3 meters. There is very little dead water, which is cold water at the time of initial hot water supply, and warm hot water comes out immediately.
[0019]
The water cooled in the hot water supply heat source section 11 is also heated by the hot water heated in the hot water supply main pipe 16 and the hot water heated in the hot water storage tank 23 of the heat exchanger 21, and heated in the spiral tube 24. There is no cold water other than water in the initial slight death from the currant 17 because it is heated by. In other words, since it is not necessary to provide a dedicated circulation pump for immediate hot water supply or a circulation circuit for immediate hot water supply, it is possible to provide a full-scale immediate hot water supply apparatus that can achieve reduced construction, compactness, low initial cost and low running cost. .
[0020]
In the present embodiment, the hot water supply / room heater 10 has been described as an example in which the hot water supply heat source unit 11 and the heating heat source unit 12 are integrally formed. Moreover, although the heat receiving tube is a spiral tube, the same effect can be exhibited even if a curved tube is used in addition to the spiral.
[0021]
(Example 2)
4 and 5 are enlarged views of the heat exchange device according to the second embodiment of the present invention. In FIG. 4, the difference from the configuration of the first embodiment is that a hot wire copper wire 26, which is a heat absorption promoting portion, is wound around a hot water supply spiral tube 24.
[0022]
By winding the copper wire 26 around the spiral tube 24 in this manner, the effect of disturbing the flow of the heated hot water outside the spiral tube 24 and the heat transfer area are expanded, thereby improving the heat transfer rate and increasing the heating rate of the hot water supply water. And the hot water supply capacity of immediate hot water supply is improved.
[0023]
Here, although the heat absorption promotion part was made into the copper wire 26, the same effect can be exhibited also as a finned tube or a grooved tube.
[0024]
Furthermore, even if the fins 27 are provided on the hot water supply header 25 as shown in FIG.
[0025]
Example 3
FIG. 6 is a configuration diagram of a heat exchange device of an immediate hot water supply apparatus according to Embodiment 3 of the present invention. In FIG. 6, the difference from the configuration of the first embodiment is a configuration in which a spiral tube 30, which is a heat transfer tube through which heating hot water circulates, is wound around an outer peripheral portion 29 of an immediate hot water tank 28 that also serves as a hot water supply header 25 in the heat exchange device 21. This is the point.
[0026]
In the instant hot water supply apparatus configured as described above, heating hot water having a low temperature of about 60 ° C. for floor heating is circulated by the heating circulation pump 18, and the hot water is supplied to the hot water main pipe 16 and the immediate hot water tank 28 of the heat exchange device 21. Heat with the passing spiral tube 30.
[0027]
Since the heat exchange device 21 is provided in the vicinity where the water is concentrated when the karan 17 is opened and the hot water is discharged, the water is dead and the hot water is discharged immediately. The water cooled in the hot water supply heat source section 11 is also heated by the hot water heated in the hot water supply main pipe 16 and the hot water heated in the immediate hot water tank 28 of the heat exchanger 21, and the spiral tube 30 is heated. Since it is heated by warm water, there is no cold water other than water from Karan 17 in the initial slight death.
[0028]
In other words, since it is not necessary to provide a dedicated circulation pump for immediate hot water supply or a circulation circuit for immediate hot water supply, it is possible to provide a full-scale immediate hot water supply apparatus that can achieve reduced construction, compactness, low initial cost and low running cost. .
[0029]
Here, although the heat receiving tube is a spiral tube, the same effect can be exhibited even if a curved tube other than the spiral is used.
[0030]
Example 4
FIG. 7 is an enlarged view of a heat exchange device according to Embodiment 4 of the present invention. In FIG. 7, the difference from the configurations of the first embodiment and the third embodiment is that a recess 31 is provided in the outer peripheral portion 29 of the immediate hot water tank 28, and the spiral tube 30 is fitted and wound around the recess 31.
[0031]
Thus, by winding the spiral tube 30 through which the heating hot water flows along the recess 31, the heat transfer area is expanded, the heating speed of the hot water supply is increased, and the hot water supply capacity of the immediate hot water supply is increased.
[0032]
(Example 5)
FIG. 8 is a configuration diagram of a heat exchange device of an immediate hot water supply apparatus according to Embodiment 5 of the present invention. In FIG. 8, what is different from the configuration of the first embodiment is that the flat tubes 32 in which the pipes through which hot water and hot water flow are in contact with each other in the heat exchanging device 21 are folded together.
[0033]
In the immediate hot water supply apparatus configured as described above, low-temperature heating hot water of about 60 ° C. for floor heating is circulated by the heating circulation pump 18 and heated by the hot water supply main pipe 16 and the flat pipe 32 of the heat exchange device 21. Since the heat exchange device 21 is provided in the vicinity where the water is concentrated when the karan 17 is opened and the hot water is discharged, the water is dead and the hot water is discharged immediately.
[0034]
The water cooled in the hot water supply heat source 11 is heated by the hot water heated in the hot water supply main pipe 16 and the flat tube 32 of the heat exchange device 21, so that there is no cold water other than water in the initial slight death from the currant 17.
[0035]
In other words, since it is not necessary to provide a dedicated circulation pump for immediate hot water supply or a circulation circuit for immediate hot water supply, it is possible to provide a full-scale immediate hot water supply apparatus that can achieve reduced construction, compactness, low initial cost and low running cost. .
[0036]
(Example 6)
FIG. 9 is a configuration diagram of a heat exchange device according to Embodiment 6 of the present invention. In FIG. 9, the difference from the configurations of the first embodiment and the fifth embodiment is that a laminated flat tube 33 in which flat tubes 32 through which heating hot water and hot water supply flow are stacked is provided. Thus, since the flat tube 32 in which the heating hot water and hot water supply flow is a laminated flat tube 33 having a laminated structure, it can be heated by the upper and lower flat tubes 32, so that the heat exchange device 21 can be realized with a small volume and the heat transfer area is expanded. By doing so, the heating speed of the hot water is increased, and the hot water discharge capacity is increased.
[0037]
(Example 7)
FIG. 10 is a configuration diagram of a heat exchange device of an immediate hot water supply apparatus according to Embodiment 7 of the present invention. In FIG. 10, the difference from the configuration of the first embodiment is that the heat exchanger 21 has a double pipe 34 configuration in which hot water flows through the inside and heating hot water flows through the outside.
[0038]
In the hot water supply apparatus configured as described above, low-temperature heating hot water of about 60 ° C. for floor heating is circulated by the heating circulation pump 18 and heated by the hot water supply main pipe 16 and the double pipe 34 of the heat exchange device 21. Since the heat exchange device 21 is provided in the vicinity where the water is concentrated when the karan 17 is opened and the hot water is discharged, the water is dead and the hot water is discharged immediately.
[0039]
The water that has been cooled in the hot water supply heat source section 11 is heated by the hot water that has been heated in the hot water supply main pipe 16 and the double pipe 34 of the heat exchange device 21, so there is no cold water other than water from the currant 17 to the initial slight death. .
[0040]
In other words, since it is not necessary to provide a dedicated circulation pump for immediate hot water supply or a circulation circuit for immediate hot water supply, it is possible to provide a full-scale immediate hot water supply apparatus that can achieve reduced construction, compactness, low initial cost and low running cost. .
[0041]
(Example 8)
FIG. 11 is a configuration diagram of a heat exchange device according to Embodiment 8 of the present invention. In FIG. 11, the difference from the configurations of the first embodiment and the seventh embodiment is that a double pipe 34 through which heating hot water and hot water supply flows is provided with a groove 35 and a copper wire 36 which are heat absorption promoting portions.
[0042]
Thus, by providing the groove portion 35 on the inner wall through which the heating hot water flows and wrapping the copper wire 36 around the outer wall through which the hot water flows, the effect of disturbing the flow of water and the heat transfer area are expanded, thereby improving the heat transfer coefficient. The heating speed of hot water is increased and the hot water discharge capacity is increased.
[0043]
Here, although the heat absorption promotion part was made into the groove part 35 and the copper wire 36, the same effect can be exhibited also as a finned tube or a bellows tube.
[0044]
The technical significance of each embodiment is summarized as follows.
[0045]
【The invention's effect】
(1) Since the hot water supply main pipe is heated with warm water for heating and the hot water supply spiral pipe and the hot water supply header are heated in the hot water storage tank, a simple and inexpensive but full-scale immediate hot water supply apparatus can be realized.
[0046]
(2) Since the hot water supply main pipe is heated with the hot water for heating and the instant hot water tank is heated with the spiral pipe for heating, a simple and inexpensive but full-fledged immediate hot water supply apparatus can be realized.
[0047]
(3) The hot water supply main pipe is heated with hot water for heating, and the flat pipes in which the hot water and heating hot water flow in contact with each other are provided in a folded manner for heating. Instant water heater can be realized.
[0048]
(4) A hot water supply main pipe is heated with hot water for heating and a double pipe configuration in which hot water flows through the inside and heating hot water flows through the outside. Can be realized.
[0049]
【The invention's effect】
As described above, according to the instant hot water supply apparatus of the present invention, hot water can be quickly discharged at the start of hot water supply, and the convenience of use can be greatly improved.
[Brief description of the drawings]
FIG. 1 is a system configuration diagram of an immediate hot water supply apparatus according to a first embodiment of the present invention. FIG. 2 is a layout view of the immediate hot water supply apparatus installed in an apartment. FIG. Cross-sectional configuration diagram [FIG. 4] Same as above, enlarged view of the main part of the heat exchange device of the hot water supply device [FIG. 5] Cross-sectional configuration diagram of the heat exchange device in Embodiment 2 of the present invention [FIG. 6] In Embodiment 3 of the present invention FIG. 7 is an enlarged view of a main part of a heat exchange device according to Embodiment 4 of the present invention. FIG. 8A is a plan view of a heat exchange device according to Embodiment 5 of the present invention. FIG. 9 is a cross-sectional view taken along the line A-A in FIG. 9A. FIG. 9A is a plan view of a heat exchange device according to a sixth embodiment of the present invention. FIG. FIG. 11 is a configuration diagram of a heat exchange device in FIG. Fig. 12 is a system configuration diagram of a conventional immediate hot water supply device. Fig. 13 is a system configuration diagram of another conventional immediate hot water supply device.
DESCRIPTION OF SYMBOLS 16 Hot water supply main piping 19, 20 Circulation heating circuit 21 Heat exchange apparatus 22 Heat insulating material 23 Hot water storage tank 24, 30 Spiral pipe 25 Hot water supply header 26 Heat absorption promotion part 28 Immediate hot water tank 29 Outer peripheral part 31 Recessed part 32 Flat pipe 33 Laminated flat pipe 34 Two Heavy pipe 35 Groove 36 Copper wire

Claims

A hot water supply heat source unit and a heating heat source unit integrally formed with the hot water supply heat source unit, water supplied through a water inlet channel is heated by the hot water supply heat source unit, and a hot water supply main pipe is supplied to the hot water supply terminal as hot water supply hot water, A circulation heating circuit in which heating hot water heated by the heating heat source unit circulates between the heating terminal and the heating heat source unit, and a heat exchanging device for exchanging heat between the heating hot water and the hot water hot water near the hot water supply terminal. The hot water supply main pipe and the circulation heating circuit leading to the heat exchange device are configured to contact each other and transfer heat from the circulation heating circuit to the hot water supply main pipe, and are positioned in the heat insulation space via the heat insulating material. immediate hot water supply device with.

2. The instantaneous hot water supply apparatus according to claim 1, wherein the heat exchange apparatus is configured such that a heat receiving pipe of a hot water supply main pipe faces a hot water storage tank through which heating hot water flows .

The instantaneous hot water supply apparatus according to claim 2, wherein the heat receiving pipe is provided with an endothermic promotion part .

The instantaneous hot water supply apparatus according to claim 1, wherein the circulation heating circuit and the hot water supply main pipe are made into flat pipes that are in contact with each other, and the heat exchange apparatus is configured by overlapping them .