JPH0638002B2 - Heat exchanger for water heater - Google Patents
Heat exchanger for water heaterInfo
- Publication number
- JPH0638002B2 JPH0638002B2 JP26520685A JP26520685A JPH0638002B2 JP H0638002 B2 JPH0638002 B2 JP H0638002B2 JP 26520685 A JP26520685 A JP 26520685A JP 26520685 A JP26520685 A JP 26520685A JP H0638002 B2 JPH0638002 B2 JP H0638002B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- drum
- heat
- water heater
- cells
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 24
- 239000000567 combustion gas Substances 0.000 claims description 10
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 210000004027 cell Anatomy 0.000 description 14
- 238000001816 cooling Methods 0.000 description 12
- 238000009835 boiling Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
Landscapes
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Details Of Fluid Heaters (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は家庭用あるいは業務用等の湯沸器に使用する熱
交換器に関するものである。TECHNICAL FIELD The present invention relates to a heat exchanger used for a domestic or commercial water heater.
従来の技術 従来の湯沸器用熱交換器では、フィンチューブ式熱交換
器とこの周囲に筒状のドラムを位置させて燃焼室を構成
し、ドラムの周囲には熱交換用チューブを巻き、材質と
して銅を用いる事が多い。加熱水はドラムの周囲の熱交
換用チューブとフィンチューブ熱交換器により熱を受
け、湯として利用されていた。2. Description of the Related Art In a conventional heat exchanger for a water heater, a fin tube heat exchanger and a cylindrical drum are placed around the heat exchanger to form a combustion chamber, and a heat exchange tube is wound around the drum to form a material. Often used copper. The heated water receives heat from the heat exchange tube and the fin tube heat exchanger around the drum and is used as hot water.
発明が解決しようとする問題点 このような熱交換器において、バーナを燃焼室の入口に
位置し、バーナ上に形性する火炎の燃焼熱が利用され
る。出湯時に湯を止めると、熱交換器に残った湯の温度
は上昇を続ける。この現象は一般に後沸きと云われてお
り、熱交換器に蓄熱された燃焼熱が水温を上昇させてい
たものと思われる。この後沸きは利用者がただちに、再
度湯を利用する時に、はじめに高温の湯が出るために、
火傷の原因になり、安全上問題点が多い。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a heat exchanger, the burner is located at the inlet of the combustion chamber, and the combustion heat of the flame formed on the burner is used. If the hot water is stopped when it is coming out, the temperature of the hot water remaining in the heat exchanger will continue to rise. This phenomenon is generally called post-boiling, and it is considered that the heat of combustion stored in the heat exchanger increased the water temperature. After this, when the user immediately uses hot water again, hot water comes out first.
It causes burns and has many safety problems.
また、この後沸きを防止するために、ドラムをセラミッ
クス板で構成する試みが行われたが、このセラミックス
板には燃焼熱が蓄熱され、バーナ消火後、この熱がフィ
ンチューブ内の水を加熱し、充分な効果が得られない。
本発明はドラムの蓄熱を少くし、後沸きを防ぐものであ
る。In addition, in order to prevent boiling after this, an attempt was made to configure the drum with a ceramic plate, but this ceramic plate stores combustion heat, and this heat heats the water in the fin tube after extinguishing the burner. However, a sufficient effect cannot be obtained.
The present invention reduces the heat storage of the drum and prevents the after-boiling.
問題点を解決するための手段 そして上記問題点を解決する本発明の技術的な手段は、
上記熱交換器のドラムにハニカム構造からなるセラミッ
クスを使用し、ハニカムを構成するセルを燃焼ガス流の
方向に位置づけている。Means for Solving the Problems And technical means of the present invention for solving the above problems,
Ceramics having a honeycomb structure are used for the drum of the heat exchanger, and the cells constituting the honeycomb are positioned in the direction of the combustion gas flow.
作 用 この技術的手段による作用は次のようになる。Operation The effects of this technical means are as follows.
バーナで燃焼した火炎から発生した熱の一部はふく射
で、一部は燃焼ガスの熱伝達でドラムに供給される。そ
して大部分の熱はフィンチューブ式熱交換器に供給され
る。この時、ドラムに供給された熱は、ドラムのハニカ
ム部の空気を加熱する。そのため、空気は浮力により上
方に流れ、ドラムの熱を奪う。その結果、ドラムの温度
は上昇せず、特に、ドラムの外表面の温度上昇は小さ
い。Part of the heat generated from the flame burned in the burner is radiant, and part of it is supplied to the drum by heat transfer of combustion gas. And most of the heat is supplied to the fin tube type heat exchanger. At this time, the heat supplied to the drum heats the air in the honeycomb portion of the drum. Therefore, the air flows upward due to the buoyancy and takes the heat of the drum. As a result, the temperature of the drum does not rise, and in particular, the temperature rise of the outer surface of the drum is small.
従って、ドラムの蓄熱量は小さく、前述の後沸きを防止
する事が容易になる。Therefore, the amount of heat stored in the drum is small, and it becomes easy to prevent the above-mentioned post-boiling.
実施例 以下本発明の一実施例を添付図面にもとずいて説明す
る。Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図において、１は熱交換器本体、２はフィンチュー
ブ式熱交換器、３は上下を開口した筒状のドラム、４は
ドラム３の下面開口の下に臨ますバーナである。熱交換
器本体１はフィンチューブ式熱交換器２とこの熱交換器
２を上面開口に設けるドラム３からなり、燃焼室５を構
成している。そして、フィンチューブ式熱交換器２は多
数の平板状のフィン６と水パイプ７から構成されてお
り、水パイプ７には加熱水８が流れ、バーナ４上で発生
した高温の燃焼ガス９により加熱され、湯として利用さ
れる。In FIG. 1, 1 is a heat exchanger main body, 2 is a fin tube type heat exchanger, 3 is a cylindrical drum having upper and lower openings, and 4 is a burner which faces under the opening of the lower surface of the drum 3. The heat exchanger body 1 is composed of a fin tube type heat exchanger 2 and a drum 3 provided with the heat exchanger 2 at an upper surface opening, and constitutes a combustion chamber 5. The fin tube type heat exchanger 2 is composed of a large number of flat fins 6 and water pipes 7. The heating water 8 flows through the water pipes 7 and the high temperature combustion gas 9 generated on the burner 4 It is heated and used as hot water.
第２図は熱交換器本体１とバーナの組立図であり、第１
図のＡ−Ａ断面に相当する。１０は火炎である。１１は
湯沸器の外装の一部である。FIG. 2 is an assembly diagram of the heat exchanger body 1 and the burner.
It corresponds to the AA cross section of the figure. 10 is a flame. Reference numeral 11 is a part of the exterior of the water heater.
第３図はドラムの一部の詳細図である。ドラム３の材質
はセラミックスであり、ハニカム構造体１２となってい
る。一例として、ハニカム構造体は次のように製造され
る。波状シート１３と板状シート１４を接着してコルゲ
ートシートを成形し、各シートの壁をセル壁１５として
多数のセル１６を構成し、ハニカム構造体とする。セラ
ミックスはアルミナ繊維を主成分としており、この成形
物を空気中に於て１２５０℃で焼成する。FIG. 3 is a detailed view of a part of the drum. The material of the drum 3 is ceramics, and the honeycomb structure 12 is formed. As an example, the honeycomb structure is manufactured as follows. A corrugated sheet is formed by adhering the corrugated sheet 13 and the plate-shaped sheet 14, and a large number of cells 16 are formed by using the walls of each sheet as cell walls 15 to form a honeycomb structure. The ceramic is mainly composed of alumina fiber, and this molded product is fired in air at 1250 ° C.
次に、この一実施例の構造における作用を説明する。バ
ーナ４に供給された燃焼ガスはバーナ上で火炎９を形成
し、高温の燃焼ガス８となってフィンチューブ式熱交換
器２に供給され、そして、加熱水８を加熱し、湯として
利用される。バーナで発生した熱の一部はふく射して、
また他の一部は高温の燃焼ガスの熱伝達により、ドラム
３に供給される。この熱はハニカム構造体１２のセル１
６内の冷却空気１７を加熱する。冷却空気は浮力を得て
上昇する。従って、ドラム３に供給された熱を冷却空気
で持ち去るので、ドラムの蓄熱量は小さい。Next, the operation of the structure of this embodiment will be described. The combustion gas supplied to the burner 4 forms a flame 9 on the burner, becomes a high temperature combustion gas 8 and is supplied to the fin-tube type heat exchanger 2, and then heats the heated water 8 to be used as hot water. It Part of the heat generated by the burner is radiated,
The other part is supplied to the drum 3 by heat transfer of high-temperature combustion gas. This heat is applied to the cells 1 of the honeycomb structure 12.
The cooling air 17 in 6 is heated. The cooling air gains buoyancy and rises. Therefore, since the heat supplied to the drum 3 is carried away by the cooling air, the amount of heat stored in the drum is small.
ドラムのセル１６は波状シート１３と平板状シート１４
との空隙であり、セルは燃焼室の入口１８から出口１９
方向に位置し、かつフィンチューブ式熱交換器２の入口
に通じている。The drum cell 16 includes a corrugated sheet 13 and a flat sheet 14.
And the cell is the space between the inlet 18 and the outlet 19 of the combustion chamber.
Direction, and communicates with the inlet of the fin-tube heat exchanger 2.
火炎あるいは高温の燃焼ガスからドラム３の内表面２０
に熱が供給される。この熱は波状シート１３に伝えられ
る。この時、冷却空気１７は平板状シート１４と波状シ
ート１３から熱を奪うが、波状シートは表面積が大き
い。従って、セル１６を通過する冷却空気１７の持去る
熱量は大きい。また、セル１６の周囲のセル壁はセラミ
ックスの断熱材で構成されているため、冷却空気の浮力
を充分に生かし、冷却効果は大きい。そのため、ドラム
外表面２１の温度上昇は小さい。Inner surface 20 of drum 3 from flame or hot combustion gas
Is supplied with heat. This heat is transferred to the corrugated sheet 13. At this time, the cooling air 17 takes heat from the flat sheet 14 and the corrugated sheet 13, but the corrugated sheet has a large surface area. Therefore, the amount of heat carried away by the cooling air 17 passing through the cells 16 is large. Further, since the cell wall around the cell 16 is made of a ceramic heat insulating material, the buoyancy of the cooling air is fully utilized and the cooling effect is large. Therefore, the temperature rise on the outer surface 21 of the drum is small.
また、このハニカム構造体１２は重量が小さいけれど、
機械的応力に強く、湯沸器熱交換器としての機械的強度
は充分に保つことができる。Although the honeycomb structure 12 has a small weight,
It is resistant to mechanical stress and can maintain sufficient mechanical strength as a water heater heat exchanger.
第２図に於て、ドラム３の出口１９はフィンチューブ熱
交換器に位置しており、燃焼ガスが通過する際、冷却空
気１７を吸い込むと同時に、加熱された冷却空気をフィ
ンチューブ式熱交換器２で吸熱する。冷却空気１７はセ
ル１６内で浮力を受け、更にフィンチューブ式熱交換器
２で吸引されるため、セル１６内の流速が大きくなり、
セル１６で熱を充分に奪う事ができ、外表面２１の温度
は低い。In FIG. 2, the outlet 19 of the drum 3 is located in the fin-tube heat exchanger. When the combustion gas passes, the cooling air 17 is sucked in, and at the same time, the heated cooling air is transferred to the fin-tube heat exchanger. Heat is absorbed in vessel 2. Since the cooling air 17 receives buoyancy in the cell 16 and is further sucked by the fin-tube heat exchanger 2, the flow velocity in the cell 16 increases,
The cells 16 can sufficiently remove heat, and the temperature of the outer surface 21 is low.
また、ドラムの外表面が低いため、外装１１との距離を
小さくでき、湯沸器を小形にする事が容易である。Further, since the outer surface of the drum is low, the distance from the exterior 11 can be reduced, and the water heater can be easily made small.
次に本発明の他の実施例について説明する。Next, another embodiment of the present invention will be described.
第４図は他の実施例を示しており、この実施例のドラム
２７の出口２２はフィンチューブ式熱交換器２３の外側
に位置している。このような構造ではセル２５内を通過
する冷却空気２６はドラム出口２２から大気に開放され
るため、バーナ及び加熱水を止めた時の後沸きを更に防
止することが可能である。FIG. 4 shows another embodiment, in which the outlet 22 of the drum 27 of this embodiment is located outside the fin-tube heat exchanger 23. With such a structure, the cooling air 26 passing through the cells 25 is opened to the atmosphere from the drum outlet 22, so that it is possible to further prevent post-boiling when the burner and the heated water are stopped.
発明の効果 このように本発明の湯沸器用熱交換器はそのドラムをセ
ラミックスの材質でハニカム構造体に形成し、このハニ
カム構造体のセルの方向を燃焼ガス流の方向に位置させ
る事により、次のような効果が得られる。As described above, the heat exchanger for a water heater of the present invention has its drum formed of a ceramic material into a honeycomb structure, and by arranging the cells of the honeycomb structure in the direction of the combustion gas flow, The following effects can be obtained.
(1) 熱容量の小さいハニカム構造体からなるドラムの
セルを冷却空気が通過して、ドラムの熱を奪う事から、
ドラムの蓄熱量は小さく、バーナ消火後の後沸きを防止
できる。(1) Since the cooling air passes through the cells of the drum made of a honeycomb structure having a small heat capacity, and takes heat from the drum,
The amount of heat stored in the drum is small and it is possible to prevent post-boiling after the burner extinguishes.
(2) ハニカム構造体であり、軽量で機械強度の大きい
熱交換器にできる。(2) Since it is a honeycomb structure, it can be made into a heat exchanger that is lightweight and has high mechanical strength.
第１図は本発明の湯沸器用熱交換器の一実施例の分解
図、第２図は同断面図、第３図は同ドラムの要部斜視
図、第４図は他の実施例の断面図である。 ２……フィンチューブ熱交換器、３……ドラム、４……
バーナ、１６……セル。FIG. 1 is an exploded view of an embodiment of a heat exchanger for a water heater according to the present invention, FIG. 2 is a sectional view of the same, FIG. 3 is a perspective view of an essential part of the drum, and FIG. 4 is of another embodiment. FIG. 2 ... Fin tube heat exchanger, 3 ... drum, 4 ...
Burner, 16 ... cell.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 川端 教男 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 特開 昭60−178213（ＪＰ，Ａ) 実開 昭61−23046（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Norio Kawabata 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP 60-178213 (JP, A) 23046 (JP, U)
Claims (2)
ラムの上部開口に設けたフィンチューブ式の熱交換器と
を備え、前記ドラムは複数のセルを有する多孔質セラミ
ックスからなるハニカム構造体からなり、かつ各セルは
熱交換器の燃焼ガスの流れの方向に位置させた湯沸器用
熱交換器。1. A honeycomb structure comprising a cylindrical drum forming a combustion chamber and a fin tube type heat exchanger provided in an upper opening of the drum, the drum being made of a porous ceramic having a plurality of cells. A heat exchanger for a water heater, which is composed of a body and whose cells are positioned in the direction of the flow of combustion gas in the heat exchanger.
中に位置させた特許請求の範囲第１項記載の湯沸器用熱
交換器。2. The heat exchanger for a water heater according to claim 1, wherein the end faces of the cells are located in the fin tube type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26520685A JPH0638002B2 (en) | 1985-11-26 | 1985-11-26 | Heat exchanger for water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26520685A JPH0638002B2 (en) | 1985-11-26 | 1985-11-26 | Heat exchanger for water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62125259A JPS62125259A (en) | 1987-06-06 |
| JPH0638002B2 true JPH0638002B2 (en) | 1994-05-18 |
Family
ID=17414004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26520685A Expired - Lifetime JPH0638002B2 (en) | 1985-11-26 | 1985-11-26 | Heat exchanger for water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0638002B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537940A (en) * | 2012-02-13 | 2012-07-04 | 郭丰亮 | Evaporative cooling heat dissipation combustor |
-
1985
- 1985-11-26 JP JP26520685A patent/JPH0638002B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62125259A (en) | 1987-06-06 |
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