JPS622670B2 - - Google Patents
Info
- Publication number
- JPS622670B2 JPS622670B2 JP55071730A JP7173080A JPS622670B2 JP S622670 B2 JPS622670 B2 JP S622670B2 JP 55071730 A JP55071730 A JP 55071730A JP 7173080 A JP7173080 A JP 7173080A JP S622670 B2 JPS622670 B2 JP S622670B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- drain
- water
- water heater
- exhaust
- 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
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000011084 recovery Methods 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 6
- 230000003472 neutralizing effect Effects 0.000 claims description 6
- 238000006386 neutralization reaction Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 claims 1
- 230000002378 acidificating effect Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000001976 improved effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000009291 secondary effect Effects 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Description
【発明の詳細な説明】
本発明は湯沸し器、に関し、熱効率の向上を第
１義とし、それに付随して燃料など熱エネルギー
の消費量節減、および、排気温低下に伴なう排気
設備の熱的耐久性の増進等の副次的効果を図るべ
く、例えば熱交換容量を大きくしたり、或いは、
排熱回収型の熱交換器を付加する構成を採用する
ことに伴なう派生的問題点を効果的に解決せんと
する目的を有する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a water heater, and its primary purpose is to improve thermal efficiency, and in conjunction with this, it also reduces consumption of thermal energy such as fuel, and reduces heat generated by exhaust equipment due to a decrease in exhaust temperature. In order to achieve secondary effects such as improving physical durability, for example, increasing the heat exchange capacity or
The purpose of this invention is to effectively solve the problems that arise from adopting a configuration in which an exhaust heat recovery type heat exchanger is added.
即ち、熱交換器容量の大形化や排熱回収型熱交
換器の付加等によつて熱効率の向上を図ると、湯
沸し器使用時においてその大形熱交換器や付加し
た排熱回収型熱交換器の所での燃焼生成水の凝縮
によつて多量のドレンが発生し、かつ、このドレ
ンに排気中のSOxやNOx等が溶け込んで、PHで２
〜５程度の高い酸性度のドレン水になり、この高
酸性ドレンの後処理において排水管路等に腐蝕な
どを生起し易い問題を伴なう。それ故に、従来の
湯沸し器においては、その熱交換器を、高酸性ド
レン水の発生がない、或いは、極く僅量のドレン
発生で済むような容量のものに設計していたのが
実情であり、その結果、熱効率面でロスを招く欠
点があつた。 In other words, if you try to improve thermal efficiency by increasing the heat exchanger capacity or adding an exhaust heat recovery type heat exchanger, when using a water heater, the large heat exchanger or the added exhaust heat recovery type heat exchanger will be used. A large amount of condensate is generated due to condensation of combustion generated water at the exchanger, and SO x and NO x etc. in the exhaust are dissolved in this condensate, resulting in a pH of 2.
Drain water has a high acidity of about 5 to 5, and the post-treatment of this highly acidic drain is accompanied by the problem of corrosion easily occurring in drainage pipes and the like. Therefore, the reality is that in conventional water heaters, the heat exchanger is designed with a capacity that does not generate highly acidic drain water or only generates a very small amount of drain water. As a result, it had the disadvantage of causing loss in thermal efficiency.
本発明に係る湯沸し器は、上記の実情に鑑みて
開発したものであつて、上記の問題点と欠点とを
解消することを目的として、本発明は、ガスバー
ナの上部に水熱交換器が配置され、この水熱交換
器の上部に排熱回収型の熱交換器が設けられてい
る湯沸し器において、上記の排熱回収型の熱交換
器の所で発生するドレンを受容するべくこの熱交
換器の下部に配設のドレン回収器とこれに接続の
排出路とからなるドレン回収装置が設けられ、上
記排出路にドレン酸性度を中和する中和装置が組
込まれていること特徴とする湯沸し器を提供す
る。その回収ドレンをPHで５〜９前後のほぼ中性
のものに改善した上、排出することができるよう
にしたから、熱交換器の容量増加や排熱回収型熱
交換器の付加等によつて湯沸し器全体として熱効
率を十二分に向上させ、かつ、それに付随して冒
述したエネルギー消費の節減等の副次的効果を挙
げながらも、それに伴なう派生的問題点、即ち、
ドレン排水管路の腐蝕等を効果的に解消できるに
至り、これによつて、従来では考えらなかつた高
熱効率湯沸し器の商品化を現実的なものにできる
に至つたのである。 The water heater according to the present invention was developed in view of the above-mentioned circumstances, and in order to solve the above-mentioned problems and drawbacks, the present invention provides a water heat exchanger disposed above the gas burner. In a water heater in which an exhaust heat recovery type heat exchanger is installed above the water heat exchanger, this heat exchanger is installed to receive the drain generated at the above-mentioned exhaust heat recovery type heat exchanger. A drain recovery device consisting of a drain recovery device disposed at the bottom of the vessel and a discharge path connected to the drain recovery device is provided, and a neutralization device for neutralizing the acidity of the drain is incorporated in the discharge path. Provide a water heater. The recovered drain has been improved to be almost neutral with a pH of around 5 to 9, and can be discharged, so by increasing the capacity of the heat exchanger and adding an exhaust heat recovery type heat exchanger, etc. Although the thermal efficiency of the water heater as a whole has been sufficiently improved and secondary effects such as the above-mentioned reduction in energy consumption have been achieved, there are secondary problems associated with this, namely:
It has become possible to effectively eliminate corrosion of drain pipes, and as a result, it has become possible to commercialize water heaters with high thermal efficiency, which was previously unthinkable.
特に、主たる水熱交換器の上方に位置した排熱
回収型の熱交換器のところでドレンが多量に発生
することに鑑みてその下部のみにドレン回収器を
設け、上記の主たる水熱交換器はバーナからの高
温の燃焼排ガスに直接触れるように構成したか
ら、ドレン回収効率と熱効率とが同時に顕著に改
善されるに至つた。 In particular, in view of the fact that a large amount of drainage is generated at the exhaust heat recovery type heat exchanger located above the main water heat exchanger, a drain recovery device is installed only at the bottom of the heat exchanger. Since it is configured so that it comes into direct contact with the high-temperature combustion exhaust gas from the burner, drain recovery efficiency and thermal efficiency are simultaneously significantly improved.
本発明の実施例を以下説明するが、先ずその原
型ないしは比較例としての構成を第１図により説
明すると、ガスバーナ４の上部に、その両端を給
水管５および給湯管７に連通接続させた状態でフ
インチユーブ式の水熱交換器６を配置し、この水
熱交換器６の容量を大きくしてある。本発明はこ
れを改良したものであり、第２図で示す如く前記
水熱交換器６の上部に、排熱によつて給湯用水を
予熱する排熱回収型のフインチユーブ式熱交換器
１を設けることにより、熱効率の向上を図る構成
にするとともに、排熱回収型熱交換器１の下部
に、そこで発生する高酸性ドレンを受容するドレ
ン回収器２Ｂと回収したドレン水を流下排出する
排出路２Ａとから成るドレン回収装置２を設け、
かつ、前記熱交換器６又は１の上部に、排気速度
を上げることで境膜伝熱抵抗を減少して熱回収効
率をも高めるべく、吸排式の強制排気フアン８を
設けてある湯沸し器におて、前記熱交換器６の下
方にはドレン回収器を設けずバーナ４の燃焼排ガ
スに直接さらしてある。そして排熱回収型熱交換
器１を、銅管および銅製フインの表面に錫やニツ
ケルメツキする、或いぁ、デイツピングにより耐
酸性被覆を施すとともに、前記ドレン回収装置２
の排出路２Ａにドレン酸性度を中和する装置３を
組込んだものであつて、その中和装置３として、
例えば、第３図で明示の如く、前記ドレン排出路
２Ａにフランジ接合可能な筒状容器３Ａ内に、マ
グネシウム、アルミニウム等の金属粒子、或い
は、CaCO3，Na2CO3，K2CO3等の粉状無機化合
物、更に、セメント等の固形中和物質ａを充填し
たものを使用する、又は、図示しないがPH改善用
液剤を添加する、或いは、前記回収器２Ｂにマグ
ネシウム合金やステンレスなどアルカリ性金属皿
を付設して滴下してくるドレンを中和することな
どが考えられる。 Embodiments of the present invention will be described below, but first the configuration as a prototype or a comparative example will be explained with reference to FIG. A Finch-Ube type water heat exchanger 6 is disposed, and the capacity of this water heat exchanger 6 is increased. The present invention is an improvement on this, and as shown in FIG. 2, an exhaust heat recovery type Finch-Ube heat exchanger 1 is provided above the water heat exchanger 6 to preheat hot water supply water using exhaust heat. By doing so, the structure is designed to improve thermal efficiency, and at the bottom of the exhaust heat recovery type heat exchanger 1, a drain recovery device 2B that receives highly acidic drain generated therein and a discharge path 2A that discharges the recovered drain water are provided. A drain recovery device 2 consisting of
In addition, the water heater is equipped with an intake/exhaust type forced exhaust fan 8 above the heat exchanger 6 or 1 in order to increase the exhaust speed, reduce film heat transfer resistance, and increase heat recovery efficiency. A drain recovery device is not provided below the heat exchanger 6, and the heat exchanger 6 is directly exposed to the combustion exhaust gas of the burner 4. Then, the exhaust heat recovery type heat exchanger 1 is coated with acid-resistant coating by tin or nickel plating or dipping on the surfaces of the copper tubes and copper fins, and the drain recovery device 2
A device 3 for neutralizing drain acidity is incorporated in the discharge path 2A, and as the neutralizing device 3,
For example, as clearly shown in FIG. 3, metal particles such as magnesium, aluminum, etc., or CaCO 3 , Na 2 CO 3 , K 2 CO 3 , etc. A powdered inorganic compound, further filled with a solid neutralizing substance a such as cement, or a pH improving liquid agent (not shown) may be added, or an alkaline material such as magnesium alloy or stainless steel may be used in the recovery vessel 2B. A possible solution would be to attach a metal plate to neutralize the dripping condensate.
尚、第１〜２図中、９はバーナコントローラ、
１０はガスガバナ、１１は水ガバナである。 In addition, in Figures 1 and 2, 9 is a burner controller,
10 is a gas governor, and 11 is a water governor.
第１図の比較例においては上記実施例と異な
り、ドレン回収器２Ｂが熱交換器６の下面全体を
おおつているので、バーナ燃焼ガスとの直接的接
触が妨げられる。この点を改良したのが第２図の
湯沸し器である。 In the comparative example shown in FIG. 1, unlike the above embodiment, the drain recovery device 2B covers the entire lower surface of the heat exchanger 6, so that direct contact with the burner combustion gas is prevented. The water heater shown in Figure 2 is an improvement on this point.
第１図は比較例を示した概略断面図、第２図は
本発明実施例を示した概略断面図、第３図は同じ
く要部の拡大断面図である。
１，６……熱交換器、２……ドレン回収装置、
２Ａ……ドレンの排出路、２Ｂ……ドレン回収
器、３……中和装置、４……ガスバーナ。
FIG. 1 is a schematic sectional view showing a comparative example, FIG. 2 is a schematic sectional view showing an embodiment of the present invention, and FIG. 3 is an enlarged sectional view of the main parts. 1, 6... Heat exchanger, 2... Drain recovery device,
2A... Drain discharge path, 2B... Drain recovery device, 3... Neutralization device, 4... Gas burner.
Claims (1)
れ、この水熱交換器の上部に排熱回収型の熱交換
器１が設けられている湯沸し器において、上記の
排熱回収型の熱交換器１の所で発生するドレンを
受容するべくこの熱交換器１の下部に配設のドレ
ン回収器２Ｂとこれに接続の排出路２Ａとからな
るドレン回収装置２が設けられ、上記排出路２Ａ
にドレン酸性度を中和する中和装置３が組込まれ
ていることを特徴とする湯沸し器。 ２ 前記の中和装置３が、固形中和物質ａを充填
した構造のものである特許請求の範囲第１項に記
載の湯沸し器。[Claims] 1. In a water heater in which a water heat exchanger 6 is disposed above the gas burner 4 and an exhaust heat recovery type heat exchanger 1 is provided above the water heat exchanger, the above-mentioned waste heat exchanger 6 is provided. In order to receive the drain generated at the heat recovery type heat exchanger 1, a drain recovery device 2 consisting of a drain recovery device 2B disposed at the bottom of the heat exchanger 1 and a discharge path 2A connected thereto is provided. and the above discharge path 2A
A water heater characterized in that a neutralization device 3 for neutralizing drain acidity is built into the water heater. 2. The water heater according to claim 1, wherein the neutralization device 3 has a structure filled with solid neutralizing substance a.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7173080A JPS56168054A (en) | 1980-05-28 | 1980-05-28 | Hot water supplier |
| DE3121220A DE3121220C2 (en) | 1980-05-28 | 1981-05-27 | Water heater |
| US06/448,276 US4444156A (en) | 1980-05-28 | 1982-12-09 | Water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7173080A JPS56168054A (en) | 1980-05-28 | 1980-05-28 | Hot water supplier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56168054A JPS56168054A (en) | 1981-12-24 |
| JPS622670B2 true JPS622670B2 (en) | 1987-01-21 |
Family
ID=13468923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7173080A Granted JPS56168054A (en) | 1980-05-28 | 1980-05-28 | Hot water supplier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56168054A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5716752A (en) * | 1980-07-03 | 1982-01-28 | Matsushita Electric Ind Co Ltd | Water heater |
| JPS5994247U (en) * | 1982-12-15 | 1984-06-26 | パロマ工業株式会社 | water heater |
| JPS59151047U (en) * | 1983-03-28 | 1984-10-09 | 松下電器産業株式会社 | High efficiency heat exchange equipment |
| JPH0236625Y2 (en) * | 1985-10-14 | 1990-10-04 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5374110A (en) * | 1976-12-08 | 1978-07-01 | Ebara Mfg | Heat exchanger for paper making apparatus |
| JPS5512128U (en) * | 1978-07-07 | 1980-01-25 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51121553U (en) * | 1975-03-26 | 1976-10-01 | ||
| JPS53145752U (en) * | 1977-04-22 | 1978-11-16 |
-
1980
- 1980-05-28 JP JP7173080A patent/JPS56168054A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5374110A (en) * | 1976-12-08 | 1978-07-01 | Ebara Mfg | Heat exchanger for paper making apparatus |
| JPS5512128U (en) * | 1978-07-07 | 1980-01-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56168054A (en) | 1981-12-24 |
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