JP2927115B2 - Heat exchanger for instant hot water supply - Google Patents

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】本発明はいわゆる１缶２水路の瞬
間給湯用の熱交換器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger for instantaneously supplying hot water in a so-called one-can-two waterway.

【０００２】[0002]

【従来の技術】図２に従来の瞬間給湯用熱交換器の例を
示す。10は吸熱用のフィン体で、複数枚が一定間隔で整
列せられる。各フィン体10にはダルマ形状の水管挿通穴
11が上下２段に千鳥状配置されている。各水管挿通穴11
には１缶２水路として、２系統の水管21、22が上下一対
の水管対として貫通される。水管挿通穴11の上穴11ａに
は例えば風呂追い焚き用水管21が貫通され、下穴11ｂに
は給湯用水管22が貫通せられる。そして、複数枚整列せ
られたフィン体10の下方から燃焼熱が上昇し、その熱が
水管21、22に直接吸収され、或いはフィン体10を介して
間接吸収されて、瞬間加熱が行われる。2. Description of the Related Art FIG. 2 shows an example of a conventional heat exchanger for instantaneous hot water supply. Numeral 10 denotes a heat absorbing fin body, a plurality of which are arranged at regular intervals. Dharma-shaped water tube insertion hole in each fin body 10
11 are arranged in a zigzag pattern in two rows above and below. Each water tube insertion hole 11
In this case, two water pipes 21 and 22 are penetrated as a pair of upper and lower water pipes as one can and two water paths. For example, a water pipe 21 for bath heating is passed through the upper hole 11a of the water pipe insertion hole 11, and a water pipe 22 for hot water supply is passed through the lower hole 11b. Then, combustion heat rises from below the aligned fin bodies 10 and the heat is directly absorbed by the water pipes 21 and 22 or indirectly absorbed through the fin bodies 10 to perform instantaneous heating.

【０００３】[0003]

【発明が解決しようとする課題】上記２系統の水管21、
22を上下一対の水管対とした場合、例えば上の水管21の
系統だけを運転し、下の水管22の系統を運転停止とした
場合には、下の水管22は通水停止状態或いは完全に空の
状態となり、領域Ａで示す部分が過熱されやすく、また
逆の場合には領域Ｂで示す部分が過熱されやすい問題が
あった。よってフィン体10の劣化がはやいという欠点が
あった。ところで、前記上の水管21を風呂追い焚き用水
管とし、下の水管22を給湯用水管22とした場合には、風
呂追い焚き単独使用（風呂追い焚き用水管21だけが通水
状態となる）をしても、風呂追い焚き運転での加熱熱量
は一般にあまり大きくないので、領域Ａの部分の高温化
はさほどでもなくなる。一方、給湯単独使用（給湯用水
管22だけが通水状態となる）をするときには、給湯運転
での加熱熱量が一般に大であるので、領域Ｂの部分の過
熱はかなり激しく、該Ｂ領域部分の劣化にともなう、フ
ィン体の耐久性の低下が大きいという欠点があった。The above two water pipes 21,
When 22 is a pair of upper and lower water pipes, for example, when only the system of the upper water pipe 21 is operated and the system of the lower water pipe 22 is stopped, the lower water pipe 22 is in a water stopped state or completely. There is a problem that the portion indicated by the region A is easily overheated and the portion indicated by the region B is easily overheated in the opposite case. Therefore, there is a disadvantage that the fin body 10 is rapidly deteriorated. By the way, when the upper water pipe 21 is a water pipe for bath reheating and the lower water pipe 22 is a water pipe 22 for hot water supply, only the bath reheating water pipe 21 is used (only the water pipe 21 for bath reheating is in a water-permeable state). However, since the amount of heating heat in the bath reheating operation is generally not so large, the temperature in the area A is not so high. On the other hand, when the hot water supply is used alone (only the hot water supply water pipe 22 is in a water-conducting state), the amount of heating heat in the hot water supply operation is generally large. There is a disadvantage that the durability of the fin body is greatly reduced due to deterioration.

【０００４】そこで本発明は、上記従来の欠点を解消
し、２系統の水管を上下一対の水管対として複数段千鳥
状配置にして吸熱用のフィン体に貫通してなる瞬間給湯
用熱交換器において、吸熱用のフィン体に大きな熱応力
が発生しない、よって割れたり、変形したり、その他の
劣化が生じにくい、耐久性のよいものの提供を目的とす
る。Accordingly, the present invention solves the above-mentioned conventional drawbacks, and provides a heat exchanger for instantaneous hot water supply in which two systems of water pipes are arranged as a pair of upper and lower water pipes in a staggered manner in a plurality of stages and penetrate through fin bodies for heat absorption. It is an object of the present invention to provide a fin body for heat absorption, which does not generate a large thermal stress, is less likely to be cracked, deformed or deteriorated, and has good durability.

【０００５】[0005]

【課題を解決するための手段】上記目的を達成するた
め、本発明の瞬間給湯用熱交換器は、複数枚が整列せら
れた吸熱用のフィン体に対して、上下一対にして配され
る２系統の水管の水管対を千鳥状に複数段で貫通させ、
下方からの熱によって前記水管内を流れる水を瞬間加熱
するようにしたものであって、前記千鳥状配置の水管対
における下段の水管対の上管の高さと、上段の水管対の
下管の高さとが、水平方向からみて一部重なるようにし
て各水管対の配置を構成したことを特徴としている。In order to achieve the above object, a heat exchanger for instantaneous hot water supply according to the present invention is arranged as a pair of upper and lower fins for heat absorption in which a plurality of heat exchangers are arranged. The water pipe pairs of the two water pipes are penetrated in multiple stages in a staggered manner,
The water flowing in the water pipe is instantaneously heated by heat from below, wherein the height of the upper pipe of the lower water pipe pair and the lower pipe of the upper water pipe pair in the staggered water pipe pair are determined. It is characterized in that the arrangement of the water pipe pairs is configured such that the height partially overlaps when viewed from the horizontal direction.

【０００６】[0006]

【作用】千鳥状配置の水管対における下段の水管対の上
管の高さと、上段の水管対の下管の高さとが、水平方向
からみて一部重なるようにして各水管対の配置を構成し
たことで、下段の水管対の上管と上段の水管対の下管と
の間隔が狭くなり、よって両者のいづれか一方の水管が
通水状態でなくても、その水管の周囲のフィン体に発生
する過熱状態は残る一方の通水状態の水管によって吸熱
解消される。即ち、本発明では２系統の水管の一方だけ
が単独運転される場合でも、非通水状態の水管の回りの
フィン体に発生する過熱状態は、近接する他段の通水水
管によって緩和される。[Function] The arrangement of each water pipe pair is configured such that the height of the upper pipe of the lower water pipe pair and the height of the lower pipe of the upper water pipe pair in the staggered water pipe pair partially overlap as viewed from the horizontal direction. As a result, the distance between the upper pipe of the lower water pipe pair and the lower pipe of the upper water pipe pair becomes narrower, so that even if one of the water pipes is not in a water-permeating state, the fin body around the water pipe is not formed. The generated overheated state is eliminated by the remaining one of the water pipes in the water flowing state. That is, in the present invention, even when only one of the two water pipes is operated independently, the overheating state generated in the fin body around the water pipe in the non-water-permeable state is alleviated by the adjacent water-flow water pipe in another stage. .

【０００７】[0007]

【実施例】図１は本発明の実施例を示す瞬間給湯用熱交
換器の構成図である。1 is a block diagram of a heat exchanger for instantaneous hot water supply according to an embodiment of the present invention.

【０００８】10は吸熱用のフィン体で、複数枚が一定間
隔で整列せられる。各フィン体10にはダルマ形状の水管
挿通穴11が上下２段に千鳥状配置されている。各水管挿
通穴11には１缶２水路、即ち２系統の水管である風呂追
い焚き用水管21と給湯用水管22とが上下一対の水管対と
して貫通される。水管挿通穴11の上穴11ａには前記風呂
追い焚き用水管21が貫通され、下穴11ｂには前記給湯用
水管22が貫通せられる。そして、複数枚整列せられたフ
ィン体10の下方から燃焼熱が上昇し、その熱が水管21、
22に直接吸収され、或いはフィン体10を介して間接吸収
されて、瞬間加熱が行われる。[0008] Numeral 10 is a heat absorbing fin body, a plurality of which are arranged at regular intervals. In each of the fin bodies 10, water pipe insertion holes 11 in a darma shape are arranged in a staggered manner in two upper and lower stages. In each of the water pipe insertion holes 11, one can and two water paths, that is, a two-system water pipe, a bath water pipe 21 and a hot water supply water pipe 22, are penetrated as a pair of upper and lower water pipes. The water pipe 21 for bath heating is passed through the upper hole 11a of the water pipe insertion hole 11, and the water pipe 22 for hot water supply is passed through the lower hole 11b. Then, the combustion heat rises from below the fin bodies 10 in which a plurality of fins are aligned, and the heat is
Immediate heating is carried out by being directly absorbed by 22 or indirectly absorbed through fin body 10.

【０００９】前記千鳥状配置されたフィン体10のダルマ
形状の水管挿通穴11は、下段にある水管挿通穴11の上穴
11ａと上段にある水管挿通穴11の下穴11ｂの高さが、水
平方向からみて一部重なるように配置構成する。即ち、
図１のｔで示すギャップが生じるように構成する。上段
の水管挿通穴11が下がる分、切り込み12の深さは浅くな
る。The Dharma-shaped water tube insertion hole 11 of the staggered fin body 10 is formed in the upper hole of the lower water tube insertion hole 11.
The lower hole 11b and the lower hole 11b of the water tube insertion hole 11 in the upper stage are arranged so as to partially overlap when viewed from the horizontal direction. That is,
It is configured such that a gap shown by t in FIG. 1 is generated. The depth of the cut 12 becomes shallower as much as the upper water tube insertion hole 11 is lowered.

【００１０】今、風呂追い焚き運転を単独で行うと、風
呂追い焚き用水管21だけが通水状態となり、給湯用水管
22は通水が行われない。よって、最下段の給湯用水管22
の下半周囲の領域Ａについては、やはり従来と同様に過
熱気味となる。が、上段の給湯用水管22の下半周囲のフ
ィン体10に生じる過熱状況は下段の追い焚き用配管21に
よって吸熱緩和される。また風呂追い焚き運転の場合は
一般に加熱入力が大きくないので、単独運転であって
も、前記Ａ領域の過熱はさほどでもない。次に、給湯運
転を単独で行うと、給湯用水管22だけが通水状態とな
り、風呂追い焚き用水管21は非通水状態若しくは完全に
空の状態となっている。また給湯運転の場合は一般に加
熱入力が大きい。よって下段の追い焚き用水管21の側部
の領域Ｂはかなり過熱傾向となるが、上段の給湯用水管
22によって吸熱緩和される。[0010] Now, when the bath reheating operation is performed alone, only the bath reheating water pipe 21 is in a water-permeable state,
22 does not pass water. Therefore, the hot water supply pipe 22 at the bottom
The area A around the lower half of the area is slightly overheated similarly to the related art. However, the overheating state generated in the fin body 10 around the lower half of the upper hot water supply water pipe 22 is mitigated by the lower heating pipe 21. In addition, in the case of the bath reheating operation, since the heating input is generally not large, the overheating in the A region is not so large even when the operation is performed alone. Next, when the hot-water supply operation is performed alone, only the hot-water supply water pipe 22 is in a water-permeable state, and the bath water heating water pipe 21 is in a non-water-permeable state or completely empty. In the case of hot water supply operation, the heating input is generally large. Therefore, although the region B on the side of the lower reheating water pipe 21 tends to overheat considerably, the upper water heating water pipe 21 does not.
Endothermic relaxation by 22.

【００１１】[0011]

【発明の効果】本発明は以上の構成、作用よりなり、請
求項１に記載の瞬間給湯用熱交換器によれば、複数枚が
整列せられた吸熱用のフィン体に対して、上下一対にし
て配される２系統の水管の水管対を千鳥状に複数段で貫
通させ、下方からの熱によって前記水管内を流れる水を
瞬間加熱するようにした瞬間給湯用熱交換器において、
前記千鳥状配置の水管対における下段の水管対の上管の
高さと、上段の水管対の下管の高さとが、水平方向から
みて一部重なるようにして各水管対の配置を構成したの
で、２系統の熱交換用水管の一方だけを単独運転する場
合でも、吸熱フィン体が大きく過熱されたりすることが
防止される。よってまた、熱応力による割れやその他の
熱劣化が減少せられ、耐久性を増すことができる。According to the heat exchanger for instantaneous hot water supply according to the first aspect of the present invention, a pair of upper and lower heat-absorbing fins are arranged with respect to the heat-absorbing fins. In a heat exchanger for instantaneous hot water supply in which a water pipe pair of two water pipes arranged in a staggered manner is penetrated in a plurality of stages, and water flowing in the water pipe is instantaneously heated by heat from below,
Since the height of the upper pipe of the lower water pipe pair in the staggered water pipe pair and the height of the lower pipe of the upper water pipe pair partially overlap when viewed from the horizontal direction, the arrangement of each water pipe pair was configured. In addition, even when only one of the two heat exchange water pipes is operated independently, the heat absorbing fin body is prevented from being greatly overheated. Therefore, cracks and other thermal degradation due to thermal stress are reduced, and durability can be increased.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例を示す瞬間給湯用熱交換器の構
成図である。FIG. 1 is a configuration diagram of a heat exchanger for instantaneous hot water supply showing an embodiment of the present invention.

【図２】従来の瞬間給湯用熱交換器の例を示す構成図で
ある。FIG. 2 is a configuration diagram showing an example of a conventional instant hot water supply heat exchanger.

【符号の説明】[Explanation of symbols]

10 吸熱用のフィン体 11 水管挿通穴 11ａ 上穴 11ｂ 下穴 21 風呂追い焚き用水管 22 給湯用水管 10 Heat absorption fin body 11 Water pipe insertion hole 11a Upper hole 11b Lower hole 21 Water pipe for bath reheating 22 Water pipe for hot water supply

───────────────────────────────────────────────────── フロントページの続き (72)発明者 関 育弘 兵庫県神戸市中央区明石町32番地 株式 会社ノーリツ内 (56)参考文献 特開 平２−247454（ＪＰ，Ａ) 特開 平２−89953（ＪＰ，Ａ) 実開 昭62−55037（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.⁶，ＤＢ名) F24H 9/00 F24H 1/00 303 F28F 1/32 F24H 1/14 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Ikuhiro Seki 32, Akashi-cho, Chuo-ku, Kobe-shi, Hyogo Noritsu Co., Ltd. (56) References JP-A-2-247454 (JP, A) JP-A-2-89953 (JP, A) Japanese Utility Model Showa 62-55037 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24H 9/00 F24H 1/00 303 F28F 1/32 F24H 1/14

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 複数枚が整列せられた吸熱用のフィン体
に対して、上下一対にして配される２系統の水管の水管
対を千鳥状に複数段で貫通させ、下方からの熱によって
前記水管内を流れる水を瞬間加熱するようにした瞬間給
湯用熱交換器であって、前記千鳥状配置の水管対におけ
る下段の水管対の上管の高さと、上段の水管対の下管の
高さとが、水平方向からみて一部重なるようにして各水
管対の配置を構成したことを特徴とする瞬間給湯用熱交
換器。1. A water pipe pair of two water pipes arranged in a pair at the top and bottom is penetrated in a plurality of steps in a staggered manner with respect to a heat absorbing fin body in which a plurality of heat absorbing fin bodies are arranged. An instantaneous hot water supply heat exchanger configured to instantaneously heat water flowing in the water pipes, the height of an upper pipe of a lower water pipe pair in the staggered arrangement of water pipes, and the lower pipe of an upper water pipe pair. An instant hot water supply heat exchanger, wherein the arrangement of each water pipe pair is configured such that the height and the height thereof partially overlap when viewed from the horizontal direction.