JPH09250816A - Hot water supplier - Google Patents
Hot water supplierInfo
- Publication number
- JPH09250816A JPH09250816A JP9011096A JP9011096A JPH09250816A JP H09250816 A JPH09250816 A JP H09250816A JP 9011096 A JP9011096 A JP 9011096A JP 9011096 A JP9011096 A JP 9011096A JP H09250816 A JPH09250816 A JP H09250816A
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- water
- auxiliary
- main heat
- auxiliary heat
- 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
Links
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、給湯器等において
燃焼排ガスの排熱を利用して熱効率の向上を図った給湯
器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water heater in which heat efficiency is improved by utilizing exhaust heat of combustion exhaust gas in a water heater or the like.
【0002】[0002]
【従来の技術】従来から熱交換器の熱効率を向上するた
めに燃焼排ガスの排熱を利用する方法があり、例えば特
公昭62−2671号公報に記載されているものは、ガ
スバーナと、その真上の燃焼排ガス流路の上流と下流に
2つの熱交換器を設け、下流側の補助熱交換器から上流
側の主熱交換器に直列に通水する構成となっている。2. Description of the Related Art Conventionally, there is a method of utilizing exhaust heat of combustion exhaust gas in order to improve the heat efficiency of a heat exchanger. For example, the one disclosed in Japanese Patent Publication No. 62-2671 discloses a gas burner and a true burner thereof. Two heat exchangers are provided upstream and downstream of the upper combustion exhaust gas passage, and water is passed in series from the auxiliary heat exchanger on the downstream side to the main heat exchanger on the upstream side.
【0003】[0003]
【発明が解決しようとする課題】ところが、特公昭62
−2671号公報記載の構成のように2つの熱交換器に
対して直列に通水する構成とすると、熱効率を低下させ
ることなく補助熱交換器を小型化し、給湯器全体の小型
化を図るため、熱交換器を構成する水管の径を細くし、
それら水管を密に配置するようにした場合、例えば、主
熱交換器の水管径を20mm、補助熱交換器の水管径を
12mmとすると、水管径の細径化により通水抵抗が増
加するため、十分な出湯量が得られないという問題があ
る。[Problems to be Solved by the Invention]
In order to reduce the size of the auxiliary heat exchanger and the overall size of the water heater without reducing the heat efficiency, the structure in which water is passed in series to the two heat exchangers as in the configuration described in Japanese Patent No. 2671 is used. , Reduce the diameter of the water pipes that make up the heat exchanger,
When these water pipes are arranged densely, for example, if the water pipe diameter of the main heat exchanger is 20 mm and the water pipe diameter of the auxiliary heat exchanger is 12 mm, the water resistance will decrease due to the thin water pipe diameter. There is a problem in that a sufficient amount of hot water is not obtained because of the increase.
【0004】本発明は上記の課題を解決し、熱交換器を
できる限り小さくしても、効率よく熱交換を行い、十分
な出湯量を得ることができる給湯器の提供を目的とす
る。SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a water heater capable of efficiently exchanging heat and obtaining a sufficient amount of hot water discharged even if the heat exchanger is made as small as possible.
【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
に請求項1の給湯器は、主熱交換器と、補助熱交換器
と、バーナとを備えた給湯器であって、主熱交換器と補
助熱交換器に並列に通水したことを特徴としている。ま
た、上記目的を達成するために請求項2の給湯器は、請
求項1の給湯器において、主熱交換器を構成する水管
と、補助熱交換器を構成する水管のうち、少なくともい
ずれか一方の水管径を細くしたことを特徴としている。To achieve the above object, a water heater according to a first aspect of the present invention is a water heater including a main heat exchanger, an auxiliary heat exchanger, and a burner. The feature is that water is passed in parallel to the vessel and the auxiliary heat exchanger. Further, in order to achieve the above object, the water heater according to claim 2 is the water heater according to claim 1, wherein at least one of a water pipe forming a main heat exchanger and a water pipe forming an auxiliary heat exchanger is used. The feature is that the diameter of the water pipe is thin.
【0006】本発明の給湯器において、供給水は分岐し
た入水回路から主熱交換器と補助熱交換器に並列に通水
される。そしてそれぞれの熱交換器において、バーナか
ら排出された高温の排ガスによって加熱された湯水は熱
交換器から出た後、再び混合されて出湯される。さらに
請求項2の給湯器においては、主熱交換器と補助熱交換
器のうち、少なくともいずれか一方の熱交換器の水管径
を細くし、それらを密に配置することによって熱交換器
を小型化することができる。このとき2つの熱交換器に
は並列に通水されるので、水管の細径化による通水抵抗
の増加により出湯量が減少することはない。In the water heater of the present invention, the feed water is passed from the branched water inlet circuit to the main heat exchanger and the auxiliary heat exchanger in parallel. Then, in each heat exchanger, hot and cold water heated by the high-temperature exhaust gas discharged from the burner exits from the heat exchanger and is then mixed again and discharged. Further, in the water heater according to claim 2, the water pipe diameter of at least one of the main heat exchanger and the auxiliary heat exchanger is reduced, and the heat exchangers are densely arranged to form the heat exchanger. It can be miniaturized. At this time, since water is passed through the two heat exchangers in parallel, the amount of hot water discharged does not decrease due to an increase in water passing resistance due to the thinning of the water pipe.
【0007】[0007]
【発明の実施の形態】図1は本発明の第一の実施形態に
おける給湯器の側断面図、図2は第二の実施形態におけ
る給湯器の側断面図である。1 is a side sectional view of a water heater according to a first embodiment of the present invention, and FIG. 2 is a side sectional view of a water heater according to a second embodiment.
【0008】図1において、第一の実施形態における給
湯器は、バーナ1の上方の排ガス流路7の上流側に主熱
交換器2、下流側に補助熱交換器4をドレン受け6を挟
んで互いに上下方向に重なるように配置している。補助
熱交換器4を構成する水管3の径は主熱交換器の水管5
の径より細く、例えば水管3は12mm、水管5は20
mmとなっており、水管3を密に配置することで補助熱
交換器を小型化することができる。供給水は図示しない
入水管から分岐され、水管3と水管5に並列に通水され
る。そしてバーナ1で形成される火炎より生じた高温の
排ガスによって、2つの熱交換器において加熱作用され
た湯水は再び混合され、図示しない給湯管から出湯され
る。In FIG. 1, the water heater according to the first embodiment has a main heat exchanger 2 on the upstream side of the exhaust gas passage 7 above the burner 1, an auxiliary heat exchanger 4 on the downstream side, and a drain receiver 6 sandwiched between them. Are arranged so that they overlap each other in the vertical direction. The diameter of the water pipe 3 that constitutes the auxiliary heat exchanger 4 is the water pipe 5 of the main heat exchanger.
The diameter of the water pipe 3 is 12 mm, and the water pipe 5 is 20 mm.
Since the water pipes 3 are densely arranged, the auxiliary heat exchanger can be downsized. The supply water is branched from a water inlet pipe (not shown) and is passed through the water pipe 3 and the water pipe 5 in parallel. The hot exhaust gas generated by the flame formed by the burner 1 mixes the hot and cold water heated in the two heat exchangers again, and the hot water is discharged from a hot water supply pipe (not shown).
【0009】図2において第二の実施形態における給湯
器は、主熱交換器2と補助熱交換器4との間で排ガス流
路7を狭窄することによって間隙を形成し、その間隙を
挟んで主熱交換器2と補助熱交換器4とを上下方向かつ
左右方向に重なるように配置している。バーナ1で形成
される火炎によって生じた高温の排ガスは、主熱交換器
2を加熱しながら、次第に狭くなる排ガス流路7を上昇
し、集約されていく。そして排ガス流路7の下流にある
補助熱交換器4を加熱した後、排気される。また図示し
ない入水管から分岐して水管3と水管5に並列に通水さ
れた供給水は、主熱交換器2で高温の排ガスによって加
熱される一方、補助熱交換器4では主熱交換器2におい
て加熱作用した後の排ガスによって、すなわち排熱を利
用して加熱された後、主熱交換器2で加熱された湯水と
再び混合され、図示しない給湯管から出湯される。In FIG. 2, in the water heater according to the second embodiment, a gap is formed between the main heat exchanger 2 and the auxiliary heat exchanger 4 by narrowing the exhaust gas passage 7, and the gap is sandwiched. The main heat exchanger 2 and the auxiliary heat exchanger 4 are arranged so as to overlap in the vertical direction and the horizontal direction. The high-temperature exhaust gas generated by the flame formed by the burner 1 rises in the exhaust gas passage 7 that gradually narrows while heating the main heat exchanger 2, and is collected. The auxiliary heat exchanger 4 located downstream of the exhaust gas passage 7 is heated and then exhausted. The supply water branched from a water inlet pipe (not shown) and passed through the water pipes 3 and 5 in parallel is heated by the high-temperature exhaust gas in the main heat exchanger 2, while in the auxiliary heat exchanger 4, the main heat exchanger is supplied. After being heated by the exhaust gas at 2, that is, after being heated by using exhaust heat, it is mixed again with the hot and cold water heated by the main heat exchanger 2 and tapped from a hot water supply pipe (not shown).
【0010】補助熱交換器4で排熱を利用して水を加熱
すると、排ガス中の水分が凝縮することによってドレン
が生じる。このドレンは強い酸性のため、ドレン受け6
で回収された後、中和装置8で中和処理される。第二の
実施形態では主熱交換器2と補助熱交換器4との間に間
隙を存し、ドレン受け6はその間隙の上方の排ガス流路
内壁面に設けられているので、排ガスの流れに直接さら
されることはなく、またドレン受け6の近傍に達した排
ガスは、2つの熱交換器において加熱作用した結果、温
度が幾分低下しているので、ドレン受け6が加熱され、
ドレンが蒸発することで熱が奪われ、熱効率が低下する
ことを防ぐことができる。さらに図2のように主熱交換
器2の形状に合わせて補助熱交換器4を設けると、補助
熱交換器4の伝熱面積を最大限確保しながら、給湯器全
体として小型化することができる。補助熱交換器4は、
主熱交換器2と組み合わせたときに主熱交換器2に対し
て突出するような形状でなければ、特に主熱交換器2の
形状に合わせなくてもよい。When water is heated using the exhaust heat in the auxiliary heat exchanger 4, the water in the exhaust gas is condensed to generate drain. This drain is strongly acidic, so drain drain 6
After being collected in (1), it is neutralized by the neutralizer 8. In the second embodiment, there is a gap between the main heat exchanger 2 and the auxiliary heat exchanger 4, and the drain receiver 6 is provided on the inner wall surface of the exhaust gas passage above the gap. The exhaust gas that has not been directly exposed to the exhaust gas and has reached the vicinity of the drain receiver 6 is heated in the two heat exchangers, as a result of which the temperature is somewhat lowered, the drain receiver 6 is heated,
It is possible to prevent heat from being lost due to evaporation of the drain, and to reduce thermal efficiency. Further, when the auxiliary heat exchanger 4 is provided according to the shape of the main heat exchanger 2 as shown in FIG. 2, it is possible to reduce the size of the entire water heater while ensuring the heat transfer area of the auxiliary heat exchanger 4 to the maximum. it can. The auxiliary heat exchanger 4 is
The shape does not have to match the shape of the main heat exchanger 2 unless the shape is such that it protrudes from the main heat exchanger 2 when combined with the main heat exchanger 2.
【0011】通水量は第一の実施形態、第二の実施形態
とも補助熱交換器4より主熱交換器2の方が多く、例え
ば2:8の割合で通水され、各熱交換器で加熱された
後、再び混合されて図示しない給湯管から出湯されるの
で、水管3の細径化による通水抵抗の増加の影響はな
い。また補助熱交換器4の水管3は密に配置されている
ため、細径化したことによる伝熱面積の減少に伴う熱効
率の低下もない。In both the first embodiment and the second embodiment, the main heat exchanger 2 has a larger amount of water flow than the auxiliary heat exchanger 4, and water is passed at a ratio of, for example, 2: 8. After being heated, they are mixed again and discharged from a hot water supply pipe (not shown), so that there is no influence of an increase in water flow resistance due to the thinning of the water pipe 3. Further, since the water pipes 3 of the auxiliary heat exchanger 4 are densely arranged, there is no reduction in thermal efficiency due to the reduction of the heat transfer area due to the reduced diameter.
【0012】さらに、出湯量に影響がない範囲であれ
ば、水管3と水管5を共に細径化して例えば両方とも1
5mmとしてもよいし、第一及び第二の実施形態とは逆
に、主熱交換器2の水管5を補助熱交換器4の水管3よ
り細くして例えば水管3を20mm、水管5を12mm
とし、水管5を密に配置する構成としてもよい。なお、
いずれの場合も図示しない入水管と給湯管は細径化しな
い。Further, within a range where the amount of hot water discharged is not affected, both the water pipe 3 and the water pipe 5 are reduced in diameter so that, for example, both of them have a diameter of 1.
5 mm may be used, or contrary to the first and second embodiments, the water pipe 5 of the main heat exchanger 2 is made thinner than the water pipe 3 of the auxiliary heat exchanger 4, for example, the water pipe 3 is 20 mm and the water pipe 5 is 12 mm.
The water pipes 5 may be densely arranged. In addition,
In either case, the water inlet pipe and hot water supply pipe (not shown) are not thinned.
【0013】[0013]
【発明の効果】以上説明したような構成にしたことで請
求項1の給湯器は次のような効果を奏する。すなわち本
発明の給湯器では、主熱交換器と補助熱交換器に並列に
通水したことによって、熱交換器を構成する水管径を細
くしても全体の通水抵抗が増加することはないので、十
分な出湯量を得ることができるという効果を奏する。ま
た請求項2の給湯器では、細くした水管を密に配置する
ことによって伝熱面積の減少による熱効率の低下を防止
し、熱交換器の小型化が可能となるため、給湯器全体と
しても小型化することができるという効果がある。The water heater according to the first aspect of the present invention having the above-described structure has the following effects. That is, in the water heater of the present invention, by passing water in parallel to the main heat exchanger and the auxiliary heat exchanger, even if the diameter of the water pipe constituting the heat exchanger is reduced, the overall water flow resistance does not increase. Since it does not exist, there is an effect that a sufficient amount of hot water can be obtained. Further, in the water heater according to claim 2, since the thin water pipes are densely arranged, the heat efficiency is prevented from being lowered due to the reduction of the heat transfer area, and the heat exchanger can be miniaturized. The effect is that it can be converted.
【図1】本発明の第一の実施形態を示す給湯器の側断面
図である。FIG. 1 is a side sectional view of a water heater showing a first embodiment of the present invention.
【図2】本発明の第二の実施形態を示す給湯器の側断面
図である。FIG. 2 is a side sectional view of a water heater showing a second embodiment of the present invention.
1 バーナ 2 主熱交換器 3 水管 4 補助熱交換器 5 水管 6 ドレン受け 7 排ガス流路 8 中和装置 1 burner 2 main heat exchanger 3 water pipe 4 auxiliary heat exchanger 5 water pipe 6 drain receiver 7 exhaust gas passage 8 neutralizer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 忽那 良治 兵庫県神戸市中央区江戸町93番地株式会社 ノーリツ内 (72)発明者 植田 英雄 兵庫県神戸市中央区江戸町93番地株式会社 ノーリツ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryoji Kona, 93, Edo-machi, Chuo-ku, Kobe, Hyogo Prefecture, Noritsu Co., Ltd. (72) Hideo Ueda, 93, Edo-cho, Chuo-ku, Kobe, Hyogo Prefecture, Noritsu, Ltd.
Claims (2)
とを備えた給湯器であって、主熱交換器と補助熱交換器
に並列に通水したことを特徴とする給湯器。1. A water heater provided with a main heat exchanger, an auxiliary heat exchanger, and a burner, wherein water is passed in parallel to the main heat exchanger and the auxiliary heat exchanger. .
換器を構成する水管のうち、少なくともいずれか一方の
水管径を細くしたことを特徴とする請求項1記載の給湯
器。2. The water heater according to claim 1, wherein at least one of the water pipe constituting the main heat exchanger and the water pipe constituting the auxiliary heat exchanger has a thin water pipe diameter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9011096A JPH09250816A (en) | 1996-03-18 | 1996-03-18 | Hot water supplier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9011096A JPH09250816A (en) | 1996-03-18 | 1996-03-18 | Hot water supplier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09250816A true JPH09250816A (en) | 1997-09-22 |
Family
ID=13989389
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9011096A Pending JPH09250816A (en) | 1996-03-18 | 1996-03-18 | Hot water supplier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09250816A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008039389A (en) * | 2007-09-21 | 2008-02-21 | Gastar Corp | Combustion device |
US20210262697A1 (en) * | 2020-02-26 | 2021-08-26 | Noritz Corporation | Heat exchanger and water heating device including the same |
-
1996
- 1996-03-18 JP JP9011096A patent/JPH09250816A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008039389A (en) * | 2007-09-21 | 2008-02-21 | Gastar Corp | Combustion device |
US20210262697A1 (en) * | 2020-02-26 | 2021-08-26 | Noritz Corporation | Heat exchanger and water heating device including the same |
US11624526B2 (en) * | 2020-02-26 | 2023-04-11 | Noritz Corporation | Heat exchanger and water heating device including the same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4143431B2 (en) | Heat exchanger | |
JPH09250816A (en) | Hot water supplier | |
JPS5842A (en) | Heat exchanger | |
TW546467B (en) | Heat exchanger | |
JP2002267273A (en) | Hot water supply apparatus | |
KR0132742B1 (en) | Heat exchanger apparatus | |
JP2002005522A (en) | Rapid rise electric water heater | |
JPH10103784A (en) | Combustion device | |
JP2008032276A (en) | Combined heat source unit | |
JPH09250817A (en) | Hot water feeder | |
JP3811334B2 (en) | Heating system | |
JP4179723B2 (en) | Heating device | |
JPH09126554A (en) | Heat exchanger | |
JP2004353964A (en) | Latent heat recovery heat exchanger | |
JP2005069665A (en) | Water heater | |
EP0751363A1 (en) | Heat exchanger | |
JP4470139B2 (en) | Natural combustion water heater | |
JPH10148398A (en) | Hot water supply apparatus | |
JP2004360968A (en) | Heat exchanger unit | |
JP2004003773A (en) | Heat exchanger | |
US5566648A (en) | Heat exchanger | |
JP2009097825A (en) | Hot water storage tank | |
JP2002107068A (en) | Heat exchanger | |
JP2002349968A (en) | Single-can multi-channel latent heat recovery heat exchanger system | |
JP2000146306A (en) | Heat exchanger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20041208 |
|
A131 | Notification of reasons for refusal |
Effective date: 20050124 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
A02 | Decision of refusal |
Effective date: 20050606 Free format text: JAPANESE INTERMEDIATE CODE: A02 |