JP2005016738A - Instantaneous water heater - Google Patents

Instantaneous water heater Download PDF

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Publication number
JP2005016738A
JP2005016738A JP2003177962A JP2003177962A JP2005016738A JP 2005016738 A JP2005016738 A JP 2005016738A JP 2003177962 A JP2003177962 A JP 2003177962A JP 2003177962 A JP2003177962 A JP 2003177962A JP 2005016738 A JP2005016738 A JP 2005016738A
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JP
Japan
Prior art keywords
hot water
water supply
heat
heating
storage tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2003177962A
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Japanese (ja)
Inventor
Masamitsu Kondo
正満 近藤
Fumitaka Kikutani
文孝 菊谷
Norio Sugawara
範夫 菅原
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Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Priority to JP2003177962A priority Critical patent/JP2005016738A/en
Publication of JP2005016738A publication Critical patent/JP2005016738A/en
Pending legal-status Critical Current

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  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To realize the simple and effective instantaneous hot water supply by heating water to be supplied in a hot water supply main pipe 16 and a supplied hot water storage tank 23 with hot water for space heating, in an instantaneous water heater for heating the water to be supplied applying the hot water space for heating as a heating source. <P>SOLUTION: This instantaneous water heater comprises circulation heating circuits 19, 20 for circulating the hot water for space heating and the hot water supply main pipe 16, and the circulating heating circuits 19, 20 and the hot water supply pipe 16 have the heat transferring relationship to each other, are arranged with a heat insulating material 22, and exchange the heat to each other by a heat exchanger 21. The heat exchanger 21 is composed of a heat radiation pipe 24 for circulating the hot water for space heating in the supplied hot water storage tank 23, and a hot water supply header 25. The hot water supply main pipe 16 is arranged in a state of being heated and keeping its warm by the hot water for space heating, further the supplied hot water is heated by the heat radiation pipe 24 where the hot water for space heating is circulated in the heat exchanger 21, and the hot water can be instantaneously supplied from the hot water supply header 26, whereby the instantaneous hot water supply can be inexpensively realized at a plurality of places with a simple constitution. <P>COPYRIGHT: (C)2005,JPO&NCIPI

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】
従来の即時給湯装置は、循環加熱回路の温水の熱を即湯循環回路に伝えている(例えば特許文献1参照)。図8は、特許文献1に記載された従来の即時給湯装置を示すものである。図8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、入水管と出湯管を保温しているものもある(例えば特許文献2参照)。図9は、特許文献2に記載された従来の即時給湯装置を示すものである。図9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】
【特許文献1】
特開2001−193955号公報(0003段落−0016段落、図1)
【特許文献2】
特開昭60−216143号公報(第4−9頁、第1図)
【0005】
【発明が解決しようとする課題】
しかしながら上記特許文献1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、即湯循環回路1全体を加熱せねばならないためランニングコストがアップする課題があった。
【0006】
さらに、上記特許文献2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給湯貯水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った。
【0007】
本発明は上記課題を解決するため、暖房温水を循環する暖房循環回路を使用し給湯主配管を加熱しつつ断熱配管し、給湯水を暖房温水で加熱する熱交換装置と給湯貯水タンクを設け、即時給湯用の循環ポンプと循環回路を設けることなくカランを開栓するとすぐにお湯が出る簡易な構成で本格的な即時給湯装置の提供を目的とする。
【0008】
【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、暖房装置等から送られた温水を循環する循環加熱回路と、給湯機等から温水配管する給湯主配管と、循環加熱回路の温水で給湯主配管の水を加熱し断熱配管するとともに、熱交換装置で熱交換し、熱交換装置の給湯貯水タンク内に循環回路の放熱管を設ける構成としたものである。
【0009】
本発明によれば、暖房用の温水で給湯主配管を加熱するとともに、熱交換器で給湯水をさらに加熱できる構成であるため、給湯用の循環回路と循環ポンプが不要であることから、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。
【0010】
【発明の実施の形態】
本発明の請求項1における即時給湯装置は、暖房温水が熱源機と熱交換装置を循環する循環加熱回路と、循環加熱回路と給湯主配管は互いに伝熱関係を有し断熱材により配管され熱交換装置で熱交換し、熱交換装置に設けた給湯貯水タンクと循環加熱回路の放熱管と給湯ヘッダーを設けた構成としてある。
【0011】
上記構成によって、暖房用の温水で給湯主配管を加熱するとともに、熱交換器で給湯水をさらに加熱できる構成であるため、給湯用の循環回路と循環ポンプが不要であることから、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。
【0012】
請求項2に記載の発明は、特に、請求項1に記載の熱交換装置の給湯貯水タンク内に設けた放熱管に放熱フィンを設けることにより、加熱能力が向上し給湯貯水タンクの容積を小さくすることができる。
【0013】
本発明の請求項3における即時給湯装置は、給湯貯水タンク内に複数の放熱細管を設けことにより、加熱能力が向上し給湯貯水タンクの容積を小さくすることができる。
【0014】
請求項4に記載の発明は、特に、請求項3に記載の熱交換装置の複数の放熱細管と給湯貯水タンク内の給湯水が対向流とすることで、加熱能力が向上し給湯貯水タンクの容積を小さくすることができる。
【0015】
本発明の請求項5における即時給湯装置は、熱交換装置の給湯貯水タンク内に設けた放熱管を螺旋管とすることで、加熱能力が向上し給湯貯水タンクの容積を小さくすることができる。
【0016】
請求項6に記載の発明は、特に、請求項5に記載の給湯貯水タンク内に設けた螺旋管に放熱促進部を設けることで、加熱能力が向上し給湯貯水タンクの容積を小さくすることができる。
【0017】
【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。
【0018】
(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等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。
【0019】
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。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。
【0020】
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。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。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。
【0021】
ここで、熱交換装置21は給湯主配管16の給湯水を貯湯する給湯貯水タンク23と、給湯貯水タンク23の内部に設けた暖房温水が通過する放熱管24と、放熱管24に設けた放熱フィン25と、台所や洗面所、お風呂等へ配管する為の給湯ヘッダー26を設けて構成する。
【0022】
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の放熱管24に循環し、給湯貯水タンク23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。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の給湯貯水タンク23で温められていたお湯とにより加温されるとともに、放熱フィン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。
【0023】
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。
【0024】
(実施例2)
図4は本発明の実施例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、給湯貯水タンク23内に設けた放熱管24を複数の放熱細管27としたものである。このように放熱細管内27を暖房温水が循環する際に給湯貯水タンク23の給湯水と熱交換するとき、高温接触する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。
【0025】
ここで、放熱細管27の流路断面は円形でも矩形としても同様の効果を発揮できるものである。さらに星形形状等の表面積を増加させると効果がさらに向上する。
【0026】
(実施例3)
図5は本発明の実施例3における熱交換装置の拡大図である。図5において、実施例1と実施例2の構成と異なるところは、給湯貯水タンク23内に設けた放熱管24を複数の放熱細管27とし、給湯水が通過する流路と対向するように暖房水の循環する流路設けたものである。このように放熱細管内27を暖房温水が循環する際に給湯貯水タンク23の給湯水が対向するように流れ熱交換することにより、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。
【0027】
ここで、放熱細管27の流路断面は円形でも矩形としても同様の効果を発揮できるものである。さらに星形形状等の表面積を増加させると効果がさらに向上する。
【0028】
(実施例4)
図6は本発明の実施例4における即時給湯装置の熱交換装置の拡大図である。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において給湯貯水タンク23の内部に暖房温水が循環する伝熱管である螺旋管28を設けた構成とした点である。
【0029】
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の螺旋管28を暖房温水が通過し加熱する。この時、螺旋管内28を暖房温水が循環する際に給湯貯水タンク23の給湯水が対向するように流れ熱交換することにより、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。
【0030】
カラン17を開栓して出湯したとき、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の給湯即水タンク23内の水は螺旋管28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。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。
【0031】
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。
【0032】
(実施例5)
図7は本発明の実施例5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4の構成と異なるところは、給湯貯水タンク23内に設けた螺旋管28に放熱促進部である熱伝導率の高い銅線29を巻き付けたものである。このように螺旋管28に銅線29を巻き付けることで螺旋管28の外側の給湯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。
【0033】
ここで、放熱促進部を銅線29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。
【0034】
【発明の効果】
以上の説明から明らかなように本発明の即時給湯装置によれば、暖房用の温水で給湯主配管を加熱するとともに、給湯貯水タンクで給湯水を加熱することで、初期のわずかな死に水以外に冷水がでることがなく、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し、簡易で安価であるが本格的な即時給湯装置を提供できるものである。
【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等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】本発明の実施例2における即時給湯装置の熱交換装置の断面構成図
【図5】本発明の実施例3における即時給湯装置の熱交換装置の断面構成図
【図6】本発明の実施例4における即時給湯装置の熱交換装置の断面構成図
【図7】本発明の実施例5における即時給湯装置の熱交換装置における要部拡大図
【図8】従来の即時給湯装置のシステム構成図
【図9】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 給湯貯水タンク
24 放熱管
25 放熱フィン
26 給湯ヘッダー
27 放熱細管
28 螺旋管
29 放熱促進部
[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]
The conventional immediate hot water supply apparatus transmits the heat of the hot water in the circulation heating circuit to the immediate hot water circulation circuit (see, for example, Patent Document 1). FIG. 8 shows a conventional immediate hot water supply apparatus described in Patent Document 1. As shown in FIG. As shown in FIG. 8, hot water for immediate hot water supply is circulated 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]
In some cases, the water inlet and outlet pipes are kept warm (see, for example, Patent Document 2). FIG. 9 shows a conventional immediate hot water supply apparatus described in Patent Document 2. As shown in FIG. As shown in FIG. 9, a circulation heating circuit 4 (trace hot water going-out pipe, return pipe) of a heating device 3 (heating heater for trace hot water) that heats and keeps the inlet pipe 6 and the outlet pipe 7 for hot water supply, and circulation And a pump 8.
[0004]
[Patent Document 1]
JP 2001-193955 (paragraphs 0003-0016, FIG. 1)
[Patent Document 2]
JP-A-60-216143 (page 4-9, Fig. 1)
[0005]
[Problems to be solved by the invention]
However, in the conventional immediate hot water supply device of Patent Document 1 described above, since the quick hot water circulation circuit 1 and the circulation pump 2 are provided, the device is larger and heavier, the initial cost is increased, and the entire quick hot water circulation circuit 1 is heated. There was a problem that the running cost increased because it had to be done.
[0006]
Furthermore, in the conventional immediate hot water supply device of Patent Document 2 described above, the circulating water circuit for heating hot water 4 is configured to heat the piping water of the water inlet pipe 6 and the hot water outlet pipe 7, so that cooling at the start of hot water heating in the hot water heater is performed. Since there is no hot water hot water storage tank, instant hot water tank or heating heat exchanger that serves as a buffer for warming the cold water when hot water flows, there is a problem of temporarily supplying hot water.
[0007]
In order to solve the above problems, the present invention uses a heating circuit that circulates heating hot water to heat-insulate piping while heating the hot water supply main piping, and provides a heat exchange device and hot water storage tank for heating the hot water with heating hot water, The objective is to provide a full-fledged instant hot water supply device with a simple configuration that immediately produces hot water when the karan is opened without providing a circulation pump and a circulation circuit for immediate hot water supply.
[0008]
[Means for Solving the Problems]
In order to solve the above-described conventional problems, an immediate hot water supply apparatus of the present invention includes a circulation heating circuit that circulates hot water sent from a heating apparatus or the like, a hot water supply main pipe that pipes hot water from a water heater or the like, and a circulation heating circuit. The water in the hot water supply main pipe is heated with hot water and insulated, and heat is exchanged in the heat exchange device, and a heat radiation pipe of the circulation circuit is provided in the hot water storage tank of the heat exchange device.
[0009]
According to the present invention, the hot water supply main pipe is heated with hot water for heating, and the hot water supply water can be further heated with a heat exchanger, so that a circulation circuit and a circulation pump for hot water supply are not required. A cheap but full-fledged immediate hot water supply system can be realized.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The instant hot water supply apparatus according to claim 1 of the present invention is a circulation heating circuit in which heating hot water circulates through a heat source unit and a heat exchange device, and the circulation heating circuit and the hot water supply main pipe have heat transfer relation to each other and are piped by a heat insulating material. Heat is exchanged by an exchange device, and a hot water storage tank provided in the heat exchange device, a radiator pipe of a circulating heating circuit, and a hot water supply header are provided.
[0011]
With the above configuration, the hot water supply main pipe is heated with hot water for heating, and the hot water supply can be further heated with a heat exchanger. Therefore, a circulation circuit and a circulation pump for hot water supply are not required, and it is simple and inexpensive. However, a full-fledged immediate hot water supply device can be realized.
[0012]
In the invention described in claim 2, the heating capacity is improved and the volume of the hot water storage tank is reduced by providing the heat radiating fins in the heat radiating pipe provided in the hot water storage tank of the heat exchange device described in claim 1 in particular. can do.
[0013]
In the instant hot water supply apparatus according to claim 3 of the present invention, by providing a plurality of radiating thin tubes in the hot water storage tank, the heating capacity can be improved and the volume of the hot water storage tank can be reduced.
[0014]
In the invention according to claim 4, in particular, a plurality of heat radiating thin tubes of the heat exchange device according to claim 3 and hot water in the hot water storage tank are opposed to each other, so that the heating capacity is improved and the hot water storage tank is The volume can be reduced.
[0015]
In the instant hot water supply apparatus according to claim 5 of the present invention, the heat dissipating pipe provided in the hot water storage tank of the heat exchange device is a spiral pipe, so that the heating capacity is improved and the volume of the hot water storage tank can be reduced.
[0016]
In the invention described in claim 6, in particular, by providing the heat radiation promoting portion in the spiral pipe provided in the hot water storage tank according to claim 5, the heating capacity is improved and the volume of the hot water storage tank can be reduced. it can.
[0017]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0018]
(Example 1)
FIG. 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 heat exchanger configuration diagram.
[0019]
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. 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 from the water inlet 15 to the hot water supply source 11 and heated, and then hot water is discharged from the currant 17 and the like through the hot water main pipe 16.
[0020]
On the other hand, the heating hot water heated by the heating heat source unit 12 is circulated by the heating circulation pump 18 and is circulated to an indoor warm air fan or floor heating. 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. 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.
[0021]
Here, the heat exchange device 21 includes a hot water storage tank 23 for storing hot water in the hot water main pipe 16, a heat radiating pipe 24 through which heating hot water provided in the hot water storage tank 23 passes, and heat dissipation provided in the heat radiating pipe 24. The fin 25 and the hot water supply header 26 for piping to a kitchen, a washroom, a bath, etc. are provided and comprised.
[0022]
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 in the hot water storage tank 23 is also heated. Since the heat exchange device 21 is provided in the vicinity where the water circulation is concentrated when the currant 17 is opened and hot water is to be discharged, the distance from the heat exchange device 21 to the heat exchange device 21 is only about 2 to 3 meters. There is very little dead water, which is cold water at the time of hot water supply, and warm hot water immediately comes out. 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 exchange device 21 and heated by the radiation fins 24. Since it is heated by warm water, there is no cold water other than water from Karan 17 in the initial slight death. 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. .
[0023]
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.
[0024]
(Example 2)
FIG. 4 is an enlarged view of a heat exchange device according to Embodiment 2 of the present invention. In FIG. 4, the difference from the configuration of the first embodiment is that the heat radiating pipe 24 provided in the hot water storage tank 23 is a plurality of heat radiating thin tubes 27. As described above, when heat exchange with the hot water in the hot water storage tank 23 is performed while the heating hot water circulates in the radiating thin tube 27, the heat transfer area is increased, thereby increasing the heat transfer rate and heating the hot water. The speed increases and the capacity for immediate hot water supply increases.
[0025]
Here, the flow passage cross section of the radiating thin tube 27 can exhibit the same effect even if it is circular or rectangular. Furthermore, the effect is further improved by increasing the surface area such as the star shape.
[0026]
Example 3
FIG. 5 is an enlarged view of a heat exchange device according to Embodiment 3 of the present invention. In FIG. 5, the difference from the configurations of the first and second embodiments is that the heat radiating pipe 24 provided in the hot water storage tank 23 is a plurality of heat radiating thin tubes 27, and is heated so as to face the flow path through which the hot water passes. A flow path for circulating water is provided. In this way, when heating hot water circulates in the radiating thin tube 27, the hot water in the hot water storage tank 23 flows so that the hot water flows so as to face each other, thereby exchanging heat and improving the heat transfer rate and increasing the heating speed of the hot water. The hot spring capacity is improved.
[0027]
Here, the flow passage cross section of the radiating thin tube 27 can exhibit the same effect even if it is circular or rectangular. Furthermore, the effect is further improved by increasing the surface area such as the star shape.
[0028]
(Example 4)
FIG. 6 is an enlarged view of a heat exchange device of an immediate hot water supply apparatus in Embodiment 4 of the present invention. In FIG. 6, what is different from the configuration of the first embodiment is that the heat exchanger 21 is provided with a spiral tube 28 that is a heat transfer tube through which heating hot water circulates inside the hot water storage tank 23.
[0029]
In the instantaneous 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 heating hot water passes through the hot water supply main pipe 16 and the spiral pipe 28 of the heat exchange device 21. And heat. At this time, when heating hot water circulates in the spiral pipe 28, the hot water in the hot water storage tank 23 flows so that the hot water flows in the opposite direction to exchange heat, thereby improving the heat transfer rate and increasing the heating speed of the hot water. Increases hot spring capacity.
[0030]
When the currant 17 is opened and the hot water is discharged, the heat exchanger 21 is provided in the vicinity where the water is concentrated. Since the water cooled in the hot water supply heat source 11 is heated by the hot water supply main pipe 16 and the water in the hot water instant water tank 23 of the heat exchanger 21 is heated by the heating hot water in the spiral tube 28, There is no cold water other than water in the initial slight death. 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 realize a full-scale immediate hot water supply apparatus that can achieve reduced construction, compactness, low initial cost and low running cost. .
[0031]
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.
[0032]
(Example 5)
FIG. 7 is an enlarged view of a heat exchange device according to Embodiment 5 of the present invention. In FIG. 7, the difference from the configuration of the fourth embodiment is that a copper wire 29 having a high thermal conductivity, which is a heat dissipation promoting portion, is wound around a spiral tube 28 provided in the hot water storage tank 23. By winding the copper wire 29 around the spiral tube 28 in this way, the effect of disturbing the flow of hot water outside the spiral tube 28 and the heat transfer area are expanded, thereby improving the heat transfer rate and increasing the heating rate of the hot water. And the hot water supply capacity of immediate hot water supply is improved.
[0033]
Here, although the copper wire 29 is used as the heat radiation promoting portion, the same effect can be exhibited as a finned tube or a grooved tube.
[0034]
【The invention's effect】
As is clear from the above description, according to the instant hot water supply apparatus of the present invention, the hot water supply main pipe is heated with hot water for heating, and hot water is heated with a hot water storage tank, so that the initial slight death other than water. No cold water is generated, and there is no need to install a dedicated circulation pump for immediate hot water supply or a circulation circuit for immediate hot water, which realizes reduced installation, compactness, low initial cost and low running cost, and is simple and inexpensive. A full-fledged immediate hot water supply system can be provided.
[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 an installation sketch when the immediate hot water supply apparatus is installed in an apartment. Fig. 4 is a cross-sectional configuration diagram of a heat exchange device of an immediate hot water supply apparatus according to a second embodiment of the present invention. Fig. 5 is a cross-sectional configuration diagram of a heat exchange device of an immediate hot water supply device according to a third embodiment of the present invention. 6 is a cross-sectional configuration diagram of a heat exchange device of an immediate hot water supply apparatus according to Embodiment 4 of the present invention. FIG. 7 is an enlarged view of a main part of the heat exchange device of an immediate hot water supply apparatus according to Embodiment 5 of the present invention. System configuration diagram of a hot water supply device [FIG. 9] System configuration diagram of another conventional hot water supply device [Explanation of symbols]
16 Hot water supply main pipes 19 and 20 Circulation heating circuit 21 Heat exchange device 22 Heat insulating material 23 Hot water storage tank 24 Radiation pipe 25 Radiation fin 26 Hot water supply header 27 Radiation narrow pipe 28 Spiral pipe 29 Radiation promotion part

Claims (6)

暖房温水が熱源機と熱交換装置を循環する循環加熱回路と、前記循環加熱回路と給湯主配管は互いに伝熱関係を有し断熱材により配管され前記熱交換装置で熱交換し、前記熱交換装置に設けた給湯貯水タンクと前記循環加熱回路の放熱管と給湯ヘッダーを設けた即時給湯装置。A circulation heating circuit in which heating hot water circulates through a heat source device and a heat exchange device, and the circulation heating circuit and the hot water supply main pipe have a heat transfer relationship with each other and are piped by a heat insulating material and exchange heat with the heat exchange device, and the heat exchange An instant hot water supply apparatus provided with a hot water storage tank provided in the apparatus, a heat radiation pipe of the circulation heating circuit, and a hot water supply header. 熱交換装置の給湯貯水タンク内に設けた放熱管に放熱フィンを設けた請求項1記載の即時給湯装置。The instantaneous hot water supply apparatus of Claim 1 which provided the radiation fin in the heat radiating pipe provided in the hot water storage tank of the heat exchanger. 熱交換装置の給湯貯水タンク内の放熱管を複数の放熱細管とした請求項1記載の即時給湯装置。The instantaneous hot water supply apparatus according to claim 1, wherein the heat radiating pipe in the hot water storage tank of the heat exchange device is a plurality of heat radiating thin tubes. 複数の放熱細管と給湯貯水タンク内の給湯水が対向流となる請求項3記載の即時給湯装置。The instantaneous hot water supply apparatus according to claim 3, wherein the plurality of radiating thin tubes and the hot water in the hot water storage tank are opposed to each other. 熱交換装置の給湯貯水タンク内に設けた放熱管を螺旋管とした請求項1記載の即時給湯装置。The instantaneous hot water supply apparatus according to claim 1, wherein the heat dissipating pipe provided in the hot water storage tank of the heat exchange apparatus is a spiral pipe. 熱交換装置の給湯貯水タンク内に設けた螺旋管に放熱促進部を設けた請求項5記載の即時給湯装置。6. The immediate hot water supply apparatus according to claim 5, wherein a heat radiation promoting portion is provided in a spiral tube provided in a hot water storage tank of the heat exchange device.
JP2003177962A 2003-06-23 2003-06-23 Instantaneous water heater Pending JP2005016738A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006317092A (en) * 2005-05-13 2006-11-24 Noritz Corp Instantaneous hot water system
CN113465170A (en) * 2021-07-12 2021-10-01 重庆交通大学 Non-circulation zero-cold water heater device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006317092A (en) * 2005-05-13 2006-11-24 Noritz Corp Instantaneous hot water system
JP4711053B2 (en) * 2005-05-13 2011-06-29 株式会社ノーリツ Instant hot water system
CN113465170A (en) * 2021-07-12 2021-10-01 重庆交通大学 Non-circulation zero-cold water heater device

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