JPS628698B2 - - Google Patents
Info
- Publication number
- JPS628698B2 JPS628698B2 JP56193711A JP19371181A JPS628698B2 JP S628698 B2 JPS628698 B2 JP S628698B2 JP 56193711 A JP56193711 A JP 56193711A JP 19371181 A JP19371181 A JP 19371181A JP S628698 B2 JPS628698 B2 JP S628698B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- surface treatment
- treatment material
- added
- alkaline
- 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
- 239000007789 gas Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 14
- 238000004381 surface treatment Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 11
- 239000003973 paint Substances 0.000 claims description 9
- 229920002050 silicone resin Polymers 0.000 claims description 8
- 239000011521 glass Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 229910019440 Mg(OH) Inorganic materials 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 239000000049 pigment Substances 0.000 claims description 4
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical class 0.000 claims description 3
- 229910052783 alkali metal Inorganic materials 0.000 claims description 2
- 150000001340 alkali metals Chemical class 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 claims 1
- 239000003546 flue gas Substances 0.000 claims 1
- 150000004679 hydroxides Chemical class 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 9
- 229910052802 copper Inorganic materials 0.000 description 9
- 239000010949 copper Substances 0.000 description 9
- 239000002585 base Substances 0.000 description 6
- 230000008018 melting Effects 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- 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】
本発明は、風呂釜および瞬間湯沸器などの熱効
率向上を図るために設けられた補助熱交換器を耐
熱塗料で表面処理被覆し、該熱交換器で生成され
る結露水の中和処理と燃焼排ガスの浄化作用を同
時に付与することのできる熱交換器表面処理材に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a surface treatment coating for an auxiliary heat exchanger provided in order to improve the thermal efficiency of bathtubs, instantaneous water heaters, etc. with a heat-resistant paint. The present invention relates to a heat exchanger surface treatment material that can neutralize dew condensation water and purify combustion exhaust gas at the same time.
従来より、ガス給湯機器の熱効率の向上を図る
ために補助熱交換器を設け、燃焼排ガスの潜熱を
利用して、被加熱物質である水を予熱する方式の
ものが開発されている。その概略を第１図に示
す。１は主熱交換器、２は補助熱交換器、３はガ
ス火炎災、４はパイプ、５はドレイン受け、６は
結露水である。この方式のガス給湯機器の原理
は、被加熱物体である水が、パイプ４を通つて補
助熱交換器２において燃焼排ガス中の潜熱によつ
て予熱された後、主熱交換器１でガス火炎３によ
つて温湯に変換され、矢印の方へ給湯されること
である。この方式による給湯機は、従来の補助熱
交換器を設けない主熱交換器のみの方式に比べ
て、熱効率が10数％向上することが確認されてい
る。 BACKGROUND ART Conventionally, in order to improve the thermal efficiency of gas water heaters, systems have been developed in which an auxiliary heat exchanger is provided and water, which is a substance to be heated, is preheated using latent heat of combustion exhaust gas. The outline is shown in Fig. 1. 1 is a main heat exchanger, 2 is an auxiliary heat exchanger, 3 is a gas flame, 4 is a pipe, 5 is a drain receiver, and 6 is a condensed water. The principle of this type of gas water heater is that after water, which is an object to be heated, passes through a pipe 4 and is preheated by the latent heat in the combustion exhaust gas in an auxiliary heat exchanger 2, it is heated by a gas flame in the main heat exchanger 1. 3, the hot water is converted to hot water and is supplied in the direction of the arrow. It has been confirmed that water heaters using this method have improved thermal efficiency by more than 10% compared to conventional systems that only use a main heat exchanger without an auxiliary heat exchanger.
しかし、補助熱交換器を設けた給湯機では、燃
焼排ガスの潜熱を利用するために、燃焼排ガス中
に含有している水分が補助熱交換器部で露点以下
となつて激しく結露する現象が生じる。この結露
水中へは、燃焼排ガス中の一酸化窒素、二酸化窒
素、二酸化イオウ、二酸化炭素などのガスが溶け
込み、PH（ペーハー、水素イオン濃度）が3.0前
後の強酸性を呈し、従来から用いられているPb
―Sn系合金の表面処理材や銅素材を腐食して孔
あき現象を生じ、遂には熱交換器機能を有しない
状態に至るという問題があつた。 However, in water heaters equipped with an auxiliary heat exchanger, since the latent heat of the combustion exhaust gas is used, the moisture contained in the combustion exhaust gas drops below the dew point in the auxiliary heat exchanger section, resulting in severe condensation. . Gases such as nitrogen monoxide, nitrogen dioxide, sulfur dioxide, and carbon dioxide in the combustion exhaust gas dissolve into this condensed water, making it highly acidic with a pH (hydrogen ion concentration) of around 3.0. Pb
- There was a problem in that the surface treatment material of the Sn-based alloy and the copper material corroded, causing pitting, and eventually leading to a state where the heat exchanger function was lost.
このようなことから、結露水の排出に際して
は、下水道に直接流すことは危険であり、何らか
の中和処理をする必要がある。このため、従来よ
りマグネシウム金属などのアルカリ物品を用い
て、処理槽を設けて中和処理をしている。このよ
うな処理を必要とするため、中和処理槽を設けな
ければならないという欠点がある。 For this reason, when discharging condensed water, it is dangerous to discharge it directly into the sewer, and some kind of neutralization treatment is required. For this reason, neutralization treatment has conventionally been carried out using an alkaline material such as magnesium metal and providing a treatment tank. Since such treatment is required, there is a drawback that a neutralization treatment tank must be provided.
前述のように、燃焼排ガス中に含まれている各
種の化合物のうち、一酸化窒素、二酸化窒素およ
び二酸化イオウなどが結露水中に溶け込んで強酸
性を呈する一因になつているが、これらのガスは
結露水中にすべて溶け込まず、一部は気相状態で
有害物質として空気中に排出される欠点がある。 As mentioned above, among the various compounds contained in combustion exhaust gas, nitrogen monoxide, nitrogen dioxide, and sulfur dioxide dissolve into condensed water and contribute to its strong acidity. It has the disadvantage that not all of it dissolves in the condensed water, and some of it is emitted into the air as a harmful substance in the gas phase.
本発明は、給湯機の熱効率の向上を図るために
設けた補助熱交換器表面に、低融点ガラスフリツ
トの顔料とシリコーン樹脂の結合剤からなる塗料
に、アルカリ土金属またはアルカリ金属の水酸化
物もしくは炭酸塩を添加した表面処理材で被覆
し、この表面処理材によつて補助熱交換器表面で
結露水の中和処理と、燃焼排ガスの浄化作用とを
同時に行なうことのできる熱交換器表面処理材を
提供することである。 The present invention applies alkaline earth metal or alkali metal hydroxide or A heat exchanger surface treatment that is coated with a carbonate-added surface treatment material that simultaneously neutralizes dew condensation on the surface of the auxiliary heat exchanger and purifies combustion exhaust gas. It is to provide materials.
本発明の表面処理材で被覆した構成を第２図に
示す。本発明について第２図をもとに詳述する。 FIG. 2 shows a structure coated with the surface treatment material of the present invention. The present invention will be explained in detail with reference to FIG.
銅素地７の上にアルミニウムまたはアルミニウ
ム合金８で被覆した上に、低融点ガラスフリツト
９を顔料としたシリコーン樹脂１０で被覆する。
この場合、低融点ガラスフリツト９を顔料としシ
リコーン樹脂を結合剤とする塗料中にアルカリ土
金属またはアルカリ金属１１の炭酸塩もしくは水
酸化物を１〜20重量％添加する。１２は銅パイプ
である。 A copper base 7 is coated with aluminum or an aluminum alloy 8, and then a silicone resin 10 containing low melting point glass frit 9 as a pigment is coated.
In this case, 1 to 20% by weight of a carbonate or hydroxide of an alkaline earth metal or alkali metal 11 is added to a paint containing low melting point glass frit 9 as a pigment and silicone resin as a binder. 12 is a copper pipe.
銅素地７の上に直接これらの塗料で被覆すると
塗料の乾燥時に銅の酸化皮膜が生成し、銅素地７
とシリコーン樹脂１０との密着性が弱くなり、容
易に剥離する。このため、前述のように銅素地７
の上にアルミニウムまたはアルミニウム合金８で
被覆して塗料の密着力の向上を図つているが、し
かし銅素地と塗料の密着力の強い場合には、これ
らの金属を被覆する必要がなく銅素地上に直接に
被覆もできる。 If these paints are applied directly onto the copper base 7, a copper oxide film will be formed when the paint dries, and the copper base 7 will be coated with these paints.
The adhesion between the silicone resin 10 and the silicone resin 10 becomes weaker, and the silicone resin 10 is easily peeled off. For this reason, as mentioned above, the copper base 7
The paint is coated with aluminum or aluminum alloy 8 to improve the adhesion of the paint, but if the adhesion between the copper base and the paint is strong, there is no need to coat these metals and the copper base can be coated with aluminum or aluminum alloy 8. It can also be directly coated.
また、シリコーン樹脂単体では被覆後ピンホー
ルが多く発生するため、低融点ガラスフリツトを
顔料とすることで、このピンホールを埋めるもの
である。 Furthermore, since many pinholes occur after coating with silicone resin alone, the pinholes are filled by using low melting point glass frit as a pigment.
このようにして銅素地７に被覆した表面処理材
に含まれている低融点ガラスフリツト９が強酸性
結露水と反応し、PH5.5〜7.5の中和処理をする。
また、この表面処理材近傍を通る燃焼排ガス中の
NO2（亜硝酸）やSO2（亜硫酸）は、アルカリ物
質であるCa（OH）2やMg（OH）2と次式に示すよ
うな反応を起して分解されて無害のものとなつて
排出される。 The low melting point glass frit 9 contained in the surface treatment material coated on the copper substrate 7 in this manner reacts with the strongly acidic condensed water to neutralize it to a pH of 5.5 to 7.5.
In addition, in the combustion exhaust gas passing near this surface treated material,
NO 2 (nitrous acid) and SO 2 (sulfurous acid) react with the alkaline substances Ca(OH) 2 and Mg(OH) 2 as shown in the following equation and are decomposed into harmless substances. It is discharged.
4NO2＋2Ca（OH）2
→Ca（NO2）2＋Ca（NO3）2＋H2O
2CO2＋2Ca（OH）2 →2CaSO4・1/2H2O＋H2O
すなわち、燃焼排ガスを浄化する効果があり、従
来のものに比べ、反応が著しく早く、且つ、補助
熱交換器上で処理することができるため、一体化
された熱交換器でコンパクト設計ができる。 4NO2 +2Ca(OH) 2
→Ca(NO 2 ) 2 +Ca(NO 3 ) 2 +H 2 O 2CO 2 +2Ca(OH) 2 →2CaSO 4・1/2H 2 O+H 2 O In other words, it has the effect of purifying combustion exhaust gas and is more effective than conventional ones. , the reaction is extremely fast and can be processed on an auxiliary heat exchanger, allowing for a compact design with an integrated heat exchanger.
これらの燃焼排ガスの浄化作用には、アルカリ
物質であるCa（OH）2もしくはMg（OH）2を単体
または複合物として好ましくは１〜20重量％添加
すると反応がスムーズに進行する。 In order to purify these combustion exhaust gases, the reaction proceeds smoothly when Ca(OH) 2 or Mg(OH) 2, which is an alkaline substance, is preferably added in an amount of 1 to 20% by weight as a single substance or a composite.
本発明は、補助熱交換器の表面処理材であり、
該熱交換器表面で強酸性結露水を中和処理すると
ともに燃焼排ガスの浄化作用をも行なうもので、
熱交換器表面ですべてを処理する一体化熱交換器
である。このため、従来法において必要とした処
理槽が不要となり、さらに、燃焼排ガスを浄化す
るという効果がある。 The present invention is a surface treatment material for an auxiliary heat exchanger,
It neutralizes strongly acidic condensed water on the surface of the heat exchanger and also purifies combustion exhaust gas.
It is an integrated heat exchanger that processes everything on the heat exchanger surface. Therefore, the treatment tank required in the conventional method is not required, and there is an effect of purifying the combustion exhaust gas.
第１図は、従来の補助熱交換器を設けた給湯
機、第２図は、本発明の表面処理材の構成図であ
る。
９……低融点ガラスフリツト、１０……シリコ
ーン樹脂、１１……アルカリ物品。
FIG. 1 shows a conventional water heater equipped with an auxiliary heat exchanger, and FIG. 2 shows a configuration of the surface treatment material of the present invention. 9...Low melting point glass frit, 10...Silicone resin, 11...Alkaline article.
Claims (1)
に、被加熱物質を予熱する補助熱交換器を設け、
前記補助熱交換器の表面を低融点ガラスフリツト
の顔料とシリコーン樹脂の結合剤からなりさらに
アルカリ物質を添加した耐熱塗料で被覆し、前記
補助熱交換器で生成する結露水の中和処理と燃焼
排ガスの浄化作用とを付与することを特徴とする
熱交換器表面処理材。 ２ アルカリ物質として、アルカリ土金属および
アルカリ金属の炭酸塩もしくは水酸化物を添加し
たことを特徴とする特許請求の範囲第１項記載の
熱交換器表面処理材。 ３ アルカリ物質として、Ca（OH）2もしくは
Mg（OH）2を添加したことを特徴とする特許請求
の範囲第１項記載の熱交換器表面処理材。 ４ アルカリ物質として、Ca（OH）2もしくは
Mg（OH）2を１〜20重量％で単体または複合して
添加したことを特徴とする特許請求の範囲第１項
記載の熱交換器表面処理材。[Claims] 1. An auxiliary heat exchanger for preheating a substance to be heated is provided downstream of the main heat exchanger provided in the flue gas flow path,
The surface of the auxiliary heat exchanger is coated with a heat-resistant paint made of a binder of a low-melting glass frit pigment and a silicone resin, and an alkaline substance is added, and the dew condensation water generated in the auxiliary heat exchanger is neutralized and the combustion exhaust gas is treated. A heat exchanger surface treatment material characterized by imparting a purifying action. 2. The heat exchanger surface treatment material according to claim 1, wherein carbonates or hydroxides of alkaline earth metals and alkali metals are added as the alkaline substances. 3 As an alkaline substance, Ca(OH) 2 or
The heat exchanger surface treatment material according to claim 1, characterized in that Mg(OH) 2 is added. 4 As an alkaline substance, Ca(OH) 2 or
2. The heat exchanger surface treatment material according to claim 1, wherein 1 to 20% by weight of Mg(OH) 2 is added singly or in combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56193711A JPS5896996A (en) | 1981-12-03 | 1981-12-03 | Surface treatment material of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56193711A JPS5896996A (en) | 1981-12-03 | 1981-12-03 | Surface treatment material of heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5896996A JPS5896996A (en) | 1983-06-09 |
| JPS628698B2 true JPS628698B2 (en) | 1987-02-24 |
Family
ID=16312514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56193711A Granted JPS5896996A (en) | 1981-12-03 | 1981-12-03 | Surface treatment material of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5896996A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5181558A (en) * | 1990-11-13 | 1993-01-26 | Matsushita Refrigeration Company | Heat exchanger |
| JP3786772B2 (en) * | 1997-11-10 | 2006-06-14 | 株式会社ガスター | Corrosion prevention device for heat exchanger |
| US6518475B2 (en) | 2001-02-16 | 2003-02-11 | Exxonmobil Chemical Patents Inc. | Process for making ethylene and propylene |
-
1981
- 1981-12-03 JP JP56193711A patent/JPS5896996A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5896996A (en) | 1983-06-09 |
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