JPH0559336B2 - - Google Patents
Info
- Publication number
- JPH0559336B2 JPH0559336B2 JP694085A JP694085A JPH0559336B2 JP H0559336 B2 JPH0559336 B2 JP H0559336B2 JP 694085 A JP694085 A JP 694085A JP 694085 A JP694085 A JP 694085A JP H0559336 B2 JPH0559336 B2 JP H0559336B2
- Authority
- JP
- Japan
- Prior art keywords
- heat exchanger
- copper
- water heater
- heat
- solar water
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Prevention Of Electric Corrosion (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、ヒートパイプを利用した太陽熱温水
器に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a solar water heater using a heat pipe.
従来の技術
従来のこの種の太陽熱温水器は第５図、第６図
に示すように集熱器２１と、貯湯タンク２２から
成り、貯湯タンク２２には給水配管２３と給湯配
管２４が接続され、常に所定水位を保ちながら、
太陽熱により水を加熱するようになつている。ま
た集熱器２１は複数本のヒートパイプの蒸発部２
５とフイン２６から構成されている。一方、貯湯
タンク２２の下部にはヒートパイプの凝縮部より
なる熱交換器２７がパツキン２８を介して水密を
保つて挿入されており、貯湯タンク２２内の水を
加熱する熱交換器となつている。この熱交換器２
７は、水への熱伝導性能を良くすることと、腐食
に対する配慮から銅材料を用いているのが一般的
である。また特定地域（PHが低い）での銅イオ
ンの溶出による青水現象の発生を防止するため
に、熱交換器２７の全表面にメツキを施した上に
樹脂コーテイングが施されていた。BACKGROUND TECHNOLOGY As shown in FIGS. 5 and 6, a conventional solar water heater of this kind consists of a heat collector 21 and a hot water storage tank 22, and a water supply pipe 23 and a hot water supply pipe 24 are connected to the hot water storage tank 22. , while always maintaining the specified water level.
Water is now heated by solar heat. In addition, the heat collector 21 is the evaporation section 2 of a plurality of heat pipes.
5 and fins 26. On the other hand, a heat exchanger 27 made of a condensing part of a heat pipe is inserted into the lower part of the hot water storage tank 22 through a gasket 28 to maintain watertightness, and serves as a heat exchanger for heating the water in the hot water storage tank 22. There is. This heat exchanger 2
7 is generally made of copper material in order to improve heat conduction performance to water and to prevent corrosion. Furthermore, in order to prevent the occurrence of blue water phenomenon due to elution of copper ions in specific areas (low pH), the entire surface of the heat exchanger 27 was plated and then coated with a resin.
発明が解決しようとする問題点
しかしながら上記のような構成では、メツキあ
るいは塗装工程において発生するピンホール部に
腐食が集中し、局部的に銅管に孔食を生じ、ヒー
トパイプ内の冷媒ガスが漏れるという問題点を有
していた。Problems to be Solved by the Invention However, with the above configuration, corrosion concentrates in the pinholes that occur during the plating or painting process, causing local pitting corrosion in the copper pipes, and causing refrigerant gas in the heat pipes to leak. It had the problem of leakage.
本発明はかかる従来の問題点を解消するもの
で、特定地域においても青水の心配がなく、か
つ、ピンホール部等における孔食の心配等のない
信頼性の高い、長寿命の太陽熱温水器を提供する
ことを目的とする。 The present invention solves these conventional problems, and provides a highly reliable, long-life solar water heater that does not have to worry about green water even in specific areas, and does not have to worry about pitting corrosion in pinholes, etc. The purpose is to provide.
問題点を解決するための手段
上記問題点を解決するために本発明の太陽熱温
水器は、熱交換器の外表面の一部に樹脂、ホーロ
ー等の被膜コーテイングの非被膜部を設けたもの
である。Means for Solving the Problems In order to solve the above problems, the solar water heater of the present invention has a non-coated part coated with resin, enamel, etc. on a part of the outer surface of the heat exchanger. be.
作 用
本発明は上記した構成によつて、PHが低い（PH
５〜６）水中における熱交換器の銅材の腐食は、
ピンホール部に集中することなく、より露出面積
の大きい非被膜部に平均的に分散される。また貯
湯タンク水量に対する非被膜部の面積割合をある
値以下にすることにより青水発生銅イオン量以下
の銅イオン溶出量としている。Effect The present invention has a low pH (PH
5-6) Corrosion of the copper material of the heat exchanger in water is
It is not concentrated in the pinhole area, but is evenly distributed in the non-coated area with a larger exposed area. Furthermore, by setting the area ratio of the non-coated portion to the amount of water in the hot water storage tank to be less than a certain value, the amount of copper ions eluted is less than the amount of copper ions generated in blue water.
実施例
以下、本発明の一実施例を添付図面にもとづい
て説明する。Embodiment Hereinafter, an embodiment of the present invention will be described based on the accompanying drawings.
第１図、第２図において１はヒートパイプの蒸
発部を含む集熱器、２は凝縮部よりなる熱交換器
で、この熱交換器２はタンク３内の下部にパツキ
ン４を介して水密を保つて挿入されている。５は
熱交換器２の外表面の略全面に施された樹脂また
はホーロー等のコーテイングの被膜部、６はコー
テイングの非被膜部である。また第３図は低PH
（PH約５）の水中における銅の露出面積と、銅の
溶出量の関係を示すグラフであり、銅の溶出量は
銅の露出面積に比例していることがわかる。また
第４図は銅の露出面積と腐食深さの関係を示すグ
ラフで、露出面積が少なくなるほど、すなわちピ
ンホールの場合には腐食深さが大きくなることが
わかる。 In FIGS. 1 and 2, 1 is a heat collector including an evaporating section of a heat pipe, and 2 is a heat exchanger consisting of a condensing section. Keep it inserted. Reference numeral 5 indicates a coating portion such as resin or enamel applied to substantially the entire outer surface of the heat exchanger 2, and reference numeral 6 indicates a non-coating portion. Also, Figure 3 shows low PH
This is a graph showing the relationship between the exposed area of copper in water (pH approximately 5) and the amount of copper eluted, and it can be seen that the amount of copper eluted is proportional to the exposed area of copper. Further, FIG. 4 is a graph showing the relationship between the exposed area of copper and the corrosion depth, and it can be seen that the smaller the exposed area, that is, the larger the corrosion depth in the case of a pinhole.
上記構成において、コーテイングの被膜部５は
銅の溶出が青水発生限界以上になるのを防ぎ、ま
た非被膜部６は露出表面が平均点に腐食されるこ
とにより、ピンホール部の選択的腐食（孔食）発
生を防止する一種のダミーとして作用する。これ
により青水発生の防止とピンホール部の孔食を防
ぐことができるという効果がある。 In the above structure, the coating film part 5 prevents copper elution from exceeding the blue water generation limit, and the non-coating part 6 prevents selective corrosion of the pinhole part by corroding the exposed surface to an average point. It acts as a kind of dummy to prevent the occurrence of pitting corrosion. This has the effect of preventing the generation of blue water and preventing pitting corrosion at the pinhole portion.
なお実験によると、上記の効果をもたらす最適
露出面積は貯湯タンク３の容量に対する非被膜部
６の面積量で見ると0.1〜２cm2／である。 According to experiments, the optimum exposed area for producing the above effect is 0.1 to 2 cm 2 / in terms of the area of the non-coated portion 6 relative to the capacity of the hot water storage tank 3.
なお、非被膜部６における熱交換器２部の被膜
部５側をつぶしたり、物をつめたりして水密状態
としておけば、非被膜部６が腐食して孔があいて
も冷媒ガスもれ等がおきなくなる。 Note that if the coated part 5 side of the heat exchanger 2 part in the non-coated part 6 is made watertight by crushing or stuffing it, refrigerant gas will not leak even if the non-coated part 6 corrodes and becomes punctured. etc. will not occur.
発明の効果
以上のように本発明の太陽熱温水器によれば、
次の効果が得られる。Effects of the Invention As described above, according to the solar water heater of the present invention,
The following effects can be obtained.
(1) 銅材の熱交換器の外表面に樹脂、ホーロー等
のコーテイングの被膜部を設けているので低PH
水での使用においても銅イオンの溶出量が少な
く青水の発生がない。(1) Low pH as the outer surface of the copper heat exchanger is coated with resin, enamel, etc.
Even when used in water, the amount of copper ions eluted is small and no blue water is generated.
(2) 熱交換器の外表面の一部を非被膜部として銅
材を露出しているので、ピンホール部のダミー
となり孔食の発生がない。(2) Since a part of the outer surface of the heat exchanger is not coated and the copper material is exposed, it acts as a dummy for the pinhole area and prevents pitting corrosion.
以上の効果により、信頼性の高い、高品質の太
陽熱温水器が得られるものである。 Due to the above effects, a highly reliable and high quality solar water heater can be obtained.
第１図は本発明一実施例の太陽熱温水器の要部
正面断面図、第２図は同太陽熱温水器の熱交換器
を示す拡大正面図、第３図は銅の露出面積と銅の
溶出量の関係を示す図、第４図は銅の露出面積と
腐食深さの関係を示す図である。第５図、第６図
は従来の太陽熱温水器を示す斜視図と要部拡大正
面断面図である。
１……集熱器、２……熱交換器、５……被膜
部、６……非被膜部。
Fig. 1 is a front sectional view of the main parts of a solar water heater according to an embodiment of the present invention, Fig. 2 is an enlarged front view showing the heat exchanger of the solar water heater, and Fig. 3 is an exposed area of copper and copper elution. FIG. 4 is a diagram showing the relationship between the exposed area of copper and the corrosion depth. FIGS. 5 and 6 are a perspective view and an enlarged front sectional view of the main parts of a conventional solar water heater. 1... Heat collector, 2... Heat exchanger, 5... Coated part, 6... Non-coated part.
Claims (1)
を貯湯タンク内に配設して熱交換器とし、前記熱
交換器の外表面の略全面に非導電性の被膜コーテ
イングを施すとともに、この熱交換器の外表面の
一部に前記被膜コーテイングの非被膜部を設けた
太陽熱温水器。 ２ 非導電性の被膜を樹脂あるいはホーローとし
た特許請求の範囲第１項記載の太陽熱温水器。 ３ 貯湯タンク容量に対する非被膜部の表面積量
を0.1〜２cm2／としてなる特許請求の範囲第１
項または第２項記載の太陽熱温水器。[Scope of Claims] 1. The evaporating part of the heat pipe is used as a heat collector, the condensing part is arranged in a hot water storage tank to form a heat exchanger, and substantially the entire outer surface of the heat exchanger is provided with a non-conductive coating. A solar water heater in which a coating is applied and a non-coated portion of the coating is provided on a part of the outer surface of the heat exchanger. 2. The solar water heater according to claim 1, wherein the non-conductive coating is made of resin or enamel. 3. Claim 1, in which the surface area of the non-coated portion is 0.1 to 2 cm 2 / with respect to the capacity of the hot water storage tank.
The solar water heater according to item 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60006940A JPS61168749A (en) | 1985-01-18 | 1985-01-18 | solar water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60006940A JPS61168749A (en) | 1985-01-18 | 1985-01-18 | solar water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61168749A JPS61168749A (en) | 1986-07-30 |
| JPH0559336B2 true JPH0559336B2 (en) | 1993-08-30 |
Family
ID=11652248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60006940A Granted JPS61168749A (en) | 1985-01-18 | 1985-01-18 | solar water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61168749A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6352989A (en) * | 1986-08-20 | 1988-03-07 | トキコ株式会社 | electric robot |
-
1985
- 1985-01-18 JP JP60006940A patent/JPS61168749A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61168749A (en) | 1986-07-30 |
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