JP3039830B2 - Electric water heater - Google Patents
Electric water heaterInfo
- Publication number
- JP3039830B2 JP3039830B2 JP5027694A JP2769493A JP3039830B2 JP 3039830 B2 JP3039830 B2 JP 3039830B2 JP 5027694 A JP5027694 A JP 5027694A JP 2769493 A JP2769493 A JP 2769493A JP 3039830 B2 JP3039830 B2 JP 3039830B2
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- water heater
- water
- electric water
- fep
- 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 - Fee Related
Links
Landscapes
- Cookers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、基材への密着が良好な
被覆層を加熱水容器の内面に施して水垢の容易な離脱を
可能とし、かつ湯沸かし音の静寂化と昇温時の過熱が防
止できる電気湯沸器に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating layer having good adhesion to a substrate, which is applied to the inner surface of a heated water container to enable easy removal of water scale, and to reduce the noise of the boiling water and reduce the temperature during heating. The present invention relates to an electric water heater that can prevent overheating.
【０００２】[0002]
【従来の技術】従来より電気湯沸器は加熱水容器に耐食
性に優れたフェライト系ステンレス鋼が主にそのまま用
いられ、底部は発熱体を取り付けた構成とされている。
近年、加熱水容器の内面にポリエーテルスルホン樹脂
（以下ＰＥＳと称する）と４フッ化エチレン樹脂と顔料
を分散した被膜（以下従来のフッ素コートと称する）を
形成して、汚れが付着しても単に拭き取るだけで容易に
清浄化できる電気湯沸器が用いられている。2. Description of the Related Art Conventionally, an electric water heater mainly uses a ferritic stainless steel having excellent corrosion resistance in a heated water container as it is, and has a bottom portion provided with a heating element.
In recent years, a coating (hereinafter, referred to as a conventional fluorine coat) in which a polyether sulfone resin (hereinafter, referred to as PES), an ethylene tetrafluoride resin, and a pigment are formed on the inner surface of a heated water container, and even if dirt adheres to the coating, Electric water heaters that can be easily cleaned by simply wiping are used.
【０００３】[0003]
【発明が解決しようとする課題】ステンレス鋼のままの
加熱水容器による電気湯沸器で湯沸かしを繰り返すと、
水道水等に含まれるカルシュウム成分などが水垢として
容器にこびり付き、容易に除去できなかった。さらに湯
沸し時の音が高く、特に静寂な部屋や夜間の使用に支障
があった。また従来のフッ素コートを形成した電気湯沸
器では基材とするステンレス鋼への密着性が不充分で長
期の使用で剥離しやすいものであり、フッ素コート層が
脆弱で層間での剥離を生じやすかった。また湯沸かし時
の昇温過程でフッ素コートの撥水性に基ずく発熱体過熱
がしばしば生じ、フッ素コートの損傷に至るという課題
を有していた。[0005] When the water heater is repeatedly heated with an electric water heater using a heated water container as it is with stainless steel,
Calcium components and the like contained in tap water adhered to the container as water scale and could not be easily removed. Furthermore, the sound when the water was boiling was high, which hindered use in particularly quiet rooms and at night. In addition, conventional electric water heaters with a fluorine coat have insufficient adhesion to the stainless steel as the base material and are easily peeled off over a long period of use, and the fluorine coat layer is fragile, causing peeling between layers. It was easy. In addition, there is a problem that the heating element often overheats due to the water repellency of the fluorine coat during the heating process during the water heating, leading to damage of the fluorine coat.
【０００４】本発明はこれらの課題を解決するもので、
基材への密着が良好な被覆層を加熱水容器の内面に施し
て水垢の容易な離脱を可能とし、かつ湯沸かし音の静寂
化と昇温時の過熱が防止できる電気湯沸器を提供するこ
とを第一の目的としている。The present invention solves these problems,
Provided is an electric water heater in which a coating layer having good adhesion to a base material is applied to the inner surface of a heated water container so that scale can be easily separated, and the boiling water sound can be silenced and overheating can be prevented when the temperature rises. That is the primary purpose.
【０００５】さらに基材への強力な密着性を付与し、長
期の使用で剥離を生じることなく前記の効果が維持でき
る電気湯沸器を提供することを第二の目的としている。It is a second object of the present invention to provide an electric water heater capable of imparting strong adhesion to a substrate and maintaining the above-mentioned effect without causing peeling over a long period of use.
【０００６】また被覆層が硬く層間剥離を防止した電気
湯沸器の提供を第三の目的としている。Another object of the present invention is to provide an electric water heater having a hard coating layer and preventing delamination.
【０００７】[0007]
【課題を解決するための手段】第一の目的を達成するた
めの本発明の第一の手段は、加熱水容器の内面に、ポリ
エーテルスルホン樹脂（以下ＰＥＳと称する）と、平均
粒子径が共に０．５ミクロン以下である４フッ化エチレン−
６フッ化プロピレン共重合樹脂（以下ＦＥＰと称する）
および無機質微粒子とを混合して被覆層を形成し、この
被覆層の表層部分には表層部分を少なくともポリエーテ
ルスルホン樹脂で部分改質した表面改質部分を形成して
なる電気湯沸器とするものである。Means for Solving the Problems A first means of the present invention for achieving the first object is that a polyethersulfone resin (hereinafter referred to as PES) is provided on the inner surface of a heated water container and has an average particle diameter of Both tetrafluoroethylenes of 0.5 micron or less
Hexafluoropropylene copolymer resin (hereinafter referred to as FEP)
And an inorganic fine particle to form a coating layer, and the surface layer portion of the coating layer is formed into an electric water heater having a surface-modified portion at least partially modified with a polyethersulfone resin. Things.
【０００８】第二の目的を達成するための本発明の第二
の手段は、第一の手段に加え、被覆層に熱可塑性ポリイ
ミド樹脂（以下ＰＡＡと称する）を含有する電気湯沸器
とするものである。[0008] A second means of the present invention for achieving the second object is, in addition to the first means, an electric water heater having a coating layer containing a thermoplastic polyimide resin (hereinafter referred to as PAA). Things.
【０００９】第三の目的を達成するための本発明の第三
の手段は、第一の手段に加え、無機質微粒子は少なくと
も二酸化チタン・二酸化珪素のいずれか一方、或は双方
の混合による電器湯沸器とするものである。A third means of the present invention for attaining the third object is that, in addition to the first means, the inorganic fine particles contain at least one of titanium dioxide and silicon dioxide, or a mixture of both. It is a boiler.
【００１０】[0010]
【作用】本発明の第一の手段は、加熱水容器の内面に被
覆層を形成するにあたってＦＥＰとＰＥＳが十分に溶融
し、しかも熱分解に至らない300℃〜350℃の温度範囲で
焼成が必要である。焼成の過程で従来のフッ素コートで
は不可能であった被覆層の形成基体であるＰＥＳが基材
側に移行し、ＦＥＰは表層部分に主として連続で均一な
被膜状態で存在するように溶融分離する。無機質微粒子
は両層間にまたがって介在して両成分の層間を一体化す
る状態で被覆層を強固に形成するものである。これによ
り基材とこの表面部分に存在するＰＥＳとの間で密着が
確保できる。被覆層の表面は平坦化し、表面層の大半を
占めるＦＥＰの非粘着性の効果により水垢の付着物が容
易に除去できるものとなる。被覆層は成分の異なる３層
構成に形成されているので被覆層全体として湯沸かし時
に発生する音の吸収・撹乱・減衰の効果を大きくできる
ものとなり、効果的な制音化をもたらす。この様な被覆
層の表層部分は少なくともＰＥＳで部分改質した表面改
質部分（親水性改質剤を不連続状態に固着）を形成し、
表層の大半を占めるＦＥＰの非粘着性の性質を保持しな
がら部分的に改質して水との親和性を向上させることで
表層を形成する様にして表面層の大半を占めるＦＥＰと
水との親和性を向上させることで湯沸かし時に発生する
気泡の細粒化と離脱を促進できることから発熱体から発
生する熱の移動が速やかとなるので過熱による被覆層の
損傷を除去できる。この結果湯沸かし音の減衰効果をさ
らに向上するものとなる。According to the first means of the present invention, when forming a coating layer on the inner surface of a heated water container, FEP and PES are sufficiently melted, and firing is carried out in a temperature range of 300 ° C. to 350 ° C. which does not lead to thermal decomposition. is necessary. In the process of baking, PES, which is a base for forming a coating layer, which was impossible with the conventional fluorine coating, migrates to the base material side, and FEP melts and separates so that it is mainly present in the surface layer in a continuous and uniform coating state. . The inorganic fine particles intervene between the two layers and form the coating layer firmly in a state where the layers of both components are integrated. Thereby, close contact between the base material and the PES existing on the surface can be ensured. The surface of the coating layer is flattened, and the non-adhesive effect of FEP, which occupies most of the surface layer, makes it easy to remove scale deposits. Since the coating layer is formed in a three-layer configuration having different components, the effect of absorbing, disturbing, and attenuating the sound generated when water is heated can be increased as a whole of the coating layer, and effective noise suppression can be achieved. The surface layer portion of such a coating layer forms at least a surface-modified portion partially modified with PES (the hydrophilic modifier is fixed in a discontinuous state),
FEP, which occupies the majority of the surface layer, is formed by partially modifying the FEP, which retains the non-adhesive properties of the surface layer to improve the affinity with water, thereby forming the surface layer. Improving the affinity of the water can promote finer particles and release of bubbles generated at the time of boiling water, so that the heat generated from the heating element can be transferred more quickly, so that damage to the coating layer due to overheating can be removed. As a result, the effect of attenuating the boiling water sound is further improved.
【００１１】上記の効果をもたらす被覆層となすために
は塗料の性状が大きく影響する。塗料はＰＥＳと無機質
微粒子とＦＥＰとが互いに分離をすることなく均一の懸
濁状態を長期に渡って安定に維持させることで、塗布、
乾燥、焼成の過程で上記の被覆層の状態が発現できるも
のである。このためにはＦＥＰと無機質粉末の平均粒子
径が共に0.5ミクロンよりも小さいことが必要な要件とな
る。一般に塗料の均一化状態は分散剤等を使用すれば容
易にできる。しかし分散剤の作用のために被覆層形成の
ための焼成の過程でも各被覆層成分の隔たりを阻止する
ように働き、本発明が目的とする被覆層の発現は望めな
い。また各成分が分離する塗料では再度の完全な分散が
困難となり、目的とする被覆層が発現しない。In order to form a coating layer having the above-mentioned effects, the properties of the paint have a great influence. The paint is applied by maintaining a uniform suspension state for a long period of time without separating PES, inorganic fine particles and FEP from each other.
The state of the above-mentioned coating layer can be expressed in the process of drying and baking. For this purpose, it is necessary that both the FEP and the inorganic powder have an average particle diameter smaller than 0.5 μm. Generally, the uniform state of the coating can be easily achieved by using a dispersant or the like. However, due to the action of the dispersant, even during the baking process for forming the coating layer, the components of the coating layer are prevented from being separated from each other, and the expression of the coating layer intended by the present invention cannot be expected. Further, it is difficult to completely disperse again with a paint from which each component is separated, and the intended coating layer does not appear.
【００１２】本発明の第二の手段は、上記の被覆層の成
分として熱可塑性ポリイミド樹脂を含有させることで、
ＰＥＳと無機質微粒子とＦＥＰの各々の間に均等に海・
島の状態に相分離した状態で分布し、本発明の目的とす
る被覆層の発現を阻止することなく上記に記述した被覆
層形成成分間のコンタクトがより密となる。加えて基材
表面へのＰＡＡの接触による基材との密着性が大幅に向
上することから長期の耐沸騰水性の向上が図れるものと
なる。[0012] The second means of the present invention is to include a thermoplastic polyimide resin as a component of the coating layer,
Even sea between each of PES, inorganic fine particles and FEP
It is distributed in a state of being phase-separated into islands, and the contacts between the above-mentioned components for forming the coating layer become denser without preventing the development of the coating layer which is the object of the present invention. In addition, since the adhesion of the PAA to the substrate surface due to the contact of the PAA is greatly improved, long-term improvement in boiling water resistance can be achieved.
【００１３】本発明の第三の手段は、上記の被覆層の成
分として含有させる無機質微粒子が他の被覆層形成成分
との親和性の大きい平均粒子径が0.5ミクロン以下である少
なくとも二酸化チタン・二酸化硅素のいずれか、或は両
成分の混合体が被覆層を一体化するのに効果を発揮して
強固にする。[0013] A third means of the present invention is that the inorganic fine particles contained as a component of the coating layer have at least titanium dioxide / dioxide having an average particle size having a large affinity for other components for forming the coating layer of 0.5 μm or less. Either silicon, or a mixture of both components, is effective in consolidating the coating layer and strengthens it.
【００１４】[0014]
（実施例１）以下、本発明の第一の手段の実施例につい
て図１・図２に基づいて説明する。１は外ケースで、こ
の外ケース１内に有底筒状の加熱水容器２が収容されて
いる。この加熱水容器２は底部容器２ａと側部容器２ｂ
よりなり、溶接により一体化されている。また、底部容
器２ａの内側は被覆層の密着を確保するために、＃１８
０番のアルミナ粉末により空気圧力５kg/cm2で基材表面
研磨し、この表面上に図２に示すように被覆層３が２５
ミクロンの厚さで形成されている。この被覆層３は、ＰＥＳ
とＦＥＰと無機質微粒子として二酸化チタンを使用しこ
れらの重量混合比を変化させた被覆層である。この被覆
層の表層部分には表層部分を少なくともＰＥＳで部分改
質した表面改質部分３ａを形成している。さらに、この
底部容器２ａの底にはマイカヒータを用いた発熱体（容
量1.4kW）４が溶接により一体化されている。５は加熱
水容器２の開口部を覆う蓋体であり、加熱水容器２に対
して開閉自在に枢着されており、内部には蒸気通路６を
有している。７はモータであり、このモータにポンプ８
が連動し、モータ７の駆動により吸込口９から水を吸い
込み吐出口１０より水を吐出するようになっている。１
１は可変部及びつまみで、水の吐出量をコントロールし
ている。１２は注出口であり、水は吐出口１０より連通
管１３を経て注出口１２から注出される。(Embodiment 1) An embodiment of the first means of the present invention will be described below with reference to FIGS. Reference numeral 1 denotes an outer case, in which a bottomed tubular heated water container 2 is housed. The heated water container 2 has a bottom container 2a and a side container 2b.
And are integrated by welding. The inside of the bottom container 2a is # 18 in order to secure the close contact of the coating layer.
The surface of the base material was polished with No. 0 alumina powder at an air pressure of 5 kg / cm 2 , and a coating layer 3 was coated on this surface as shown in FIG.
It is formed with a thickness of microns. This coating layer 3 is made of PES
This is a coating layer in which titanium dioxide is used as FEP, FEP, and inorganic fine particles, and the weight mixing ratio thereof is changed. A surface-modified portion 3a in which the surface portion is partially modified with at least PES is formed in the surface portion of the coating layer. Further, a heating element (capacity: 1.4 kW) 4 using a mica heater is integrated with the bottom of the bottom container 2a by welding. Reference numeral 5 denotes a lid that covers the opening of the heated water container 2, which is pivotally attached to the heated water container 2 so as to be openable and closable, and has a steam passage 6 therein. Reference numeral 7 denotes a motor, and a pump 8
Are interlocked with each other so that the motor 7 drives to suck water from the suction port 9 and discharge water from the discharge port 10. 1
Numeral 1 denotes a variable portion and a knob for controlling a discharge amount of water. Reference numeral 12 denotes a spout, and water is discharged from the spout 12 through the communication pipe 13 from the discharge port 10.
【００１５】次に動作を説明する。本実施例の電気湯沸
器は、電源コードより発熱体４に給電し、蓋体５により
外界と遮断した状態で、加熱水容器２中の水を加熱し沸
騰させる。この時発生する湯沸かし音は底部容器２ａの
基材表面に設けた被覆層３で減衰され、さらに被覆層３
の表面改質部分３ａで泡の離脱促進とこの細粒化により
制音化されると共に水との親和性を向上させて発熱体過
熱を防止し被覆層の損傷を防止する。また９５℃以上の
温度に常時保持しているため、底部容器２ａの内側に形
成されている被覆層の表面改質部分３ａには、熱湯が常
時接触状態で保持されている。このため、湯中に溶け込
んでいるカルシュウムなどの成分が被覆層の表面改質部
分３ａの表面上に析出し、付着して順次堆積して汚れて
行く。保温されている熱湯は、使用者によって必要に応
じて可変部及びつまみ１１が操作され、注出口１２から
排出される。湯がなくなれば新たな水を注ぎ入れること
で再び沸騰・保温を繰り返すものである。Next, the operation will be described. In the electric water heater of this embodiment, the power in the heating element 4 is supplied from the power cord, and the water in the heating water container 2 is heated and boiled in a state where the heating element 4 is shut off from the outside by the lid 5. The boiling water sound generated at this time is attenuated by the coating layer 3 provided on the base material surface of the bottom container 2a.
In the surface-modified portion 3a, the foam is promoted to be released, the sound is reduced by the fine-graining, the affinity with water is improved, the overheating of the heating element is prevented, and the coating layer is not damaged. In addition, since the temperature is always maintained at 95 ° C. or higher, hot water is always kept in contact with the surface-modified portion 3a of the coating layer formed inside the bottom container 2a. Therefore, components such as calcium dissolved in the hot water are deposited on the surface of the surface-modified portion 3a of the coating layer, adhered, sequentially deposited, and become contaminated. The heated hot water is discharged from the spout 12 by operating the variable portion and the knob 11 as needed by the user. When the hot water runs out, new water is poured in to repeat boiling and warming again.
【００１６】加熱水容器２の性能を実用に即して試験す
るために、湯を沸かす時間を２０分、保温を含めて４０
分間、発熱体４に通電し湯を排出し、注水するという一
連の操作を2000回繰り返し実施した時の制音の状態と、
発熱体上部の被覆層の表面改質部分３ａの損傷状態の有
無と、その表面に堆積した汚れを、水で濡らしたふきん
で拭き取り、汚れ除去の状態を調べた。その結果を（表
１）に示した。なお、表面改質部分３ａは組成をＰＥＳ
／ＦＥＰ／ＴｉＯ2＝４０／４０／２０（重量比）と
し、ＦＥＰとＴｉＯ2の微粒子化度を変化させて形成し
た。比較のために底部容器２ａの内面に被覆層を形成し
ていない従来の電気湯沸器（ステンレス基材のみと、現
行のフッ素コートによる被覆層）についても同様にして
評価している。In order to test the performance of the heated water container 2 in practical use, the time for boiling the water is 20 minutes, and the time including the heat retention is 40 minutes.
For a minute, a series of operations of energizing the heating element 4 to discharge hot water and inject water is repeated 2000 times,
The presence or absence of a damaged state of the surface-modified portion 3a of the coating layer on the upper portion of the heating element, and dirt deposited on the surface were examined by wiping with a wet cloth and removing dirt. The results are shown in (Table 1). The surface-modified portion 3a has a composition of PES.
/ FEP / TiO 2 = 40/40/20 (weight ratio) and the degree of fineness of FEP and TiO 2 was changed. For comparison, a conventional electric water heater in which a coating layer is not formed on the inner surface of the bottom container 2a (only a stainless steel base material and a coating layer formed by a current fluorine coating) is similarly evaluated.
【００１７】[0017]
【表１】 [Table 1]
【００１８】この結果から明かであるようにＦＥＰと無
機質微粒子の平均粒子径が0.5ミクロンよりも小さい状態で
湯沸かし時の音、耐久試験が良好となる。この平均粒子
径が0.5ミクロンよりも小さい状態（表１中のNo.４・５に相
当）の塗料はＪＩＳ-Ｋ-5400に規定する方法によるチキ
ソトロピー性を示すＴＩ値が3.0以上（固形分25.0%）を
示し長期の放置によっても全く分離・変質を示さない。
塗料中のＦＥＰと無機質微粒子双方の平均粒子径が（表
１中のNo.１〜３に相当）はＴＩ値がせいぜい1.5程度以
下で非常に速く分離を起こす。As is apparent from the results, the sound and durability test when water is heated with the average particle diameter of the FEP and the inorganic fine particles being smaller than 0.5 μm are improved. The paint having an average particle diameter of less than 0.5 micron (corresponding to No. 4.5 in Table 1) has a TI value indicating a thixotropy of not less than 3.0 (solid content of 25.0) according to the method specified in JIS-K-5400. %), Showing no separation or deterioration even after long-term storage.
When the average particle diameter of both the FEP and the inorganic fine particles in the paint (corresponding to Nos. 1 to 3 in Table 1), the TI value is at most about 1.5 or less, and separation occurs very quickly.
【００１９】この状態の塗料は、塗布直後から被覆層形
成過程での層の流動が抑制され濃淡の発生や被覆層の切
れ等の欠陥がなく、形成した被覆層はＦＥＰの偏析を発
生することなく基材側からＰＥＳの部分、ＰＥＳと無機
質微粒子とＦＥＰの混在する部分、ＦＥＰの部分が比較
的明確な状態として重層化できる。これによって、無機
質微粒子の平均粒子径がこれ以上である場合に見られる
耐久試験後の被覆層の変化が生じない。The coating material in this state has the following effects: the flow of the layer in the process of forming the coating layer is suppressed immediately after application, and there is no defect such as generation of shading or cutting of the coating layer, and the formed coating layer causes segregation of FEP. The PES portion, the portion where PES, inorganic fine particles and FEP are mixed, and the FEP portion can be layered in a relatively clear state from the substrate side. As a result, no change occurs in the coating layer after the durability test, which is observed when the average particle diameter of the inorganic fine particles is larger than this.
【００２０】同様の試験方法でＦＥＰ、ＴｉＯ2の平均
粒子径を４ミクロン、被覆層中のＴｉＯ2の量を２０重量％
と一定とし、ＰＥＳとＦＥＰの比率を変化させた場合の
結果を（表２）に、ＰＥＳとＦＥＰの比率を一定にして
無機質微粒子としてＴｉＯ2の平均粒子径を４ミクロンとし
この量を変化させた場合の結果を（表３）に示す。According to the same test method, the average particle size of FEP and TiO 2 is 4 μm, and the amount of TiO 2 in the coating layer is 20% by weight.
Table 2 shows the results obtained when the ratio of PES to FEP was changed and the ratio of PES to FEP was kept constant, and the average particle diameter of TiO 2 as inorganic fine particles was changed to 4 μm. (Table 3) shows the results in the case of the above.
【００２１】[0021]
【表２】 [Table 2]
【００２２】[0022]
【表３】 [Table 3]
【００２３】この結果から明かであるように、樹脂成分
が重量混合比でＰＥＳ／ＦＥＰ／無機質微粒子（二酸化
チタン使用）＝６８／１２／２０から１６／６４／２０
において良好な結果を示し、ＴｉＯ2の変化については
１０から３３重量％の範囲で良好である。これらの実験
に供した表層部の改質はＰＥＳ／コロダルシリカ＝10/9
0により行った。ＦＥＰと無機質微粒子の平均粒子径は
0.5ミクロンより細かく、可能な限りの微細化することで優
れた被覆層の密着性・汚れ成分の除去の容易性が得ら
れ、また沸騰時の音も静かで発熱体による被覆層の損傷
や被覆層間での剥離も発生がなく、従来の電気湯沸器に
比較して優れたものとなる。As is apparent from the results, the resin components are PES / FEP / inorganic fine particles (using titanium dioxide) = 68/12/20 to 16/64/20 by weight mixing ratio.
Shows good results, and the change of TiO 2 is good in the range of 10 to 33% by weight. The modification of the surface layer part used in these experiments was PES / collodal silica = 10/9
Performed with 0. The average particle size of FEP and inorganic fine particles is
Finer than 0.5 micron and as fine as possible provide excellent adhesion of the coating layer and easy removal of dirt components.The sound at the time of boiling is also quiet, and the coating layer is damaged or covered by the heating element. There is no delamination between layers, which is superior to conventional electric water heaters.
【００２４】ここで使用した塗料の溶剤組成はいずれも
Ｎ−メチル２ピロリジノン／ＭＩＢＫ＝２／１（重量混
合比）とした。The solvent composition of the paint used here was N-methyl-2-pyrrolidinone / MIBK = 2/1 (weight mixing ratio).
【００２５】なお、本実施例においては加熱水容器２の
底部のみに被覆層３を形成したが、特にこれに限定され
るものではなく、加熱水容器全体に形成したとしてもよ
いことは当然である。In the present embodiment, the coating layer 3 is formed only on the bottom of the heated water container 2, but the present invention is not limited to this, and it goes without saying that the coating layer 3 may be formed on the entire heated water container. is there.
【００２６】（実施例２）本実施例では、実施例１に示
した電気湯沸器の被覆層３として、ＰＡＡ（ＬＡＲＣ−
ＴＰＩ、三井東圧化学（株）製）を上記に示した塗料の
固形分に対して0〜55重量％混合し、塗料を調整した。
図２に示す加熱水容器２ａの内側は基材表面そのままの
状態で実施例１と同様の方法で構成した電気湯沸器の被
覆層の性能を評価し（表４）に示した。(Embodiment 2) In this embodiment, PAA (LARC-L) is used as the coating layer 3 of the electric water heater shown in Embodiment 1.
TPI, manufactured by Mitsui Toatsu Chemical Co., Ltd.) was mixed in an amount of 0 to 55% by weight based on the solid content of the above-mentioned paint to prepare the paint.
The performance of the coating layer of the electric water heater constructed in the same manner as in Example 1 was evaluated in the same manner as in Example 1 with the inside of the heated water container 2a shown in FIG.
【００２７】[0027]
【表４】 [Table 4]
【００２８】この結果から明かであるように、実施例１
に示す被覆層に対してＰＡＡが5〜50重量％の範囲の混
合においては良好な水垢の非付着性が付与できており、
被覆層間の剥離がなく、湯沸かし音も良好な電気湯沸器
が提供できる。As is clear from the results, Example 1
In the case where the PAA is mixed in the range of 5 to 50% by weight with respect to the coating layer shown in FIG.
It is possible to provide an electric water heater that has no peeling between the coating layers and has a good water boiling sound.
【００２９】（実施例３）本実施例では、実施例１に示
した（表１）において無機質微粒子としてＴｉＯ 2に変
えてＳｉＯ2に置き換えて電気湯沸器の表面改質部分３
ａを形成し、実施例１と同様の方法で構成した電気湯沸
器の被覆層の層間剥離をセロテープで剥離試験を行いこ
の結果を（表５）に示した。(Embodiment 3) This embodiment is similar to the first embodiment.
In Table 1 below, TiO was used as the inorganic fine particles. TwoStrange
Surface modified part of electric water heater instead of SiO2
a is formed, and an electric kettle is constructed in the same manner as in Example 1.
Perform a peeling test on the delamination of the coating layer of the
(Table 5) shows the results.
【００３０】[0030]
【表５】 [Table 5]
【００３１】この結果から明かであるように、ＴｉＯ2
と同等の結果であり、これら双方の混合としても同様の
結果をもたらすものである。また被覆層間の剥離がな
く、湯沸かし音も良好な電気湯沸器が提供できるもので
ある。As is clear from the results, TiO 2
And the same result can be obtained by mixing both. Further, it is possible to provide an electric water heater that has no peeling between the coating layers and has a good water boiling sound.
【００３２】[0032]
【発明の効果】本発明の第一の手段によれば、長期に渡
って使用した場合の水道水等に含まれる水垢成分の加熱
水容器壁面への付着があっても拭き取る等の容易な方法
によって清浄化ができ、いつまでも清潔感が保たれると
共に被覆層の変質がなく、かつ湯沸し音の静かな電気湯
沸器が実現できる。According to the first means of the present invention, even if the scale component contained in tap water or the like has been adhered to the wall surface of the heated water container when used for a long period of time, it can be easily wiped off. Thus, an electric water heater can be realized in which the cleanliness is maintained forever, the coating layer is not deteriorated, and the water boiling sound is quiet.
【００３３】本発明の第二の手段によれば、本発明の第
一の手段が有する効果に加え、被覆層の強度の向上と基
材への強固な密着性を有する電気湯沸器が提供できるも
のである。According to the second aspect of the present invention, there is provided an electric water heater having the effect of the first aspect of the present invention, an improvement in the strength of the coating layer, and a strong adhesion to the substrate. You can do it.
【００３４】本発明の第三の手段によれば、本発明の第
一の手段あるいは第二の手段の構成を忠実に再現でき、
且つ被覆層の層間での剥離のない電気湯沸器が提供でき
る。According to the third means of the present invention, the configuration of the first means or the second means of the present invention can be faithfully reproduced.
In addition, an electric water heater without peeling between the coating layers can be provided.
【図１】本発明の実施例における電気湯沸器の断面図FIG. 1 is a cross-sectional view of an electric water heater according to an embodiment of the present invention.
【図２】同要部の構成を示す断面図FIG. 2 is a cross-sectional view showing the configuration of the relevant part.
２ 加熱水容器 ３ 被覆層 ３ａ 被覆層の表面改質部分 2 Heated water container 3 Coating layer 3a Surface modification part of coating layer
フロントページの続き (72)発明者 川西 英賢 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 森 貴代隆 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (72)発明者 麻植 淳 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 平６−91805（ＪＰ，Ａ) 特開 平５−31029（ＪＰ，Ａ) 特開 平６−38878（ＪＰ，Ａ) 特開 平６−62962（ＪＰ，Ａ) 特開 平６−90858（ＪＰ，Ａ) 特開 平１−155808（ＪＰ，Ａ) 特開 平１−141618（ＪＰ，Ａ) 特開 平３−150151（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) A47J 27/21 101 Continuing on the front page (72) Inventor Hidenori Kawanishi 1006 Kazuma Kadoma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. (72) Inventor Jun Asaue 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-6-91805 (JP, A) JP-A-5-31029 (JP, A) JP-A-6-38878 (JP, A) JP-A-6-62962 (JP, A) JP-A-6-90858 (JP, A) JP-A-1-155808 (JP, A) JP-A-1-141618 ( JP, A) JP-A-3-150151 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) A47J 27/21 101
Claims (3)
ホン樹脂と、平均粒子径が共に０．５ミクロン以下である４
フッ化エチレン−６フッ化プロピレン共重合樹脂および
無機質微粒子とを混合して被覆層を形成し、この被覆層
の表層部分には表層部分を少なくともポリエーテルスル
ホン樹脂で部分改質した表面改質部分を形成してなる電
気湯沸器。1. A polyether sulfone resin and an average particle diameter of 0.5 μm or less are both provided on the inner surface of a heated water container.
A surface-modified portion in which a coating layer is formed by mixing a fluoroethylene-6-propylene copolymer resin and inorganic fine particles, and a surface layer portion of the coating layer is at least partially modified with a polyether sulfone resin. An electric water heater.
する請求項１記載の電気湯沸器。2. The electric water heater according to claim 1, wherein the coating layer contains a thermoplastic polyimide resin.
・二酸化珪素のいずれか一方、或は双方の混合による請
求項１記載の電器湯沸器。3. The electric water heater according to claim 1, wherein the inorganic fine particles are at least one of titanium dioxide and silicon dioxide, or a mixture of both.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5027694A JP3039830B2 (en) | 1993-02-17 | 1993-02-17 | Electric water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5027694A JP3039830B2 (en) | 1993-02-17 | 1993-02-17 | Electric water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06237861A JPH06237861A (en) | 1994-08-30 |
| JP3039830B2 true JP3039830B2 (en) | 2000-05-08 |
Family
ID=12228086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5027694A Expired - Fee Related JP3039830B2 (en) | 1993-02-17 | 1993-02-17 | Electric water heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3039830B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2757809B2 (en) * | 1995-02-28 | 1998-05-25 | タイガー魔法瓶株式会社 | Electric hot water storage container |
| JPH0971747A (en) * | 1995-07-03 | 1997-03-18 | Zojirushi Corp | Printing ink and print structure formed therewith |
| GB2386532B (en) * | 2001-11-29 | 2005-12-21 | Strix Ltd | Electric water heaters |
| JP2006321182A (en) * | 2005-05-20 | 2006-11-30 | Toyota Motor Corp | Part having oil-repellent film and its manufacturing method |
| JP2006329010A (en) * | 2005-05-24 | 2006-12-07 | Toyota Motor Corp | Exhaust emission control device of internal combustion engine |
| JP2008038630A (en) * | 2006-08-01 | 2008-02-21 | Aisan Ind Co Ltd | Flow passage arranging member of internal combustion engine |
| JP2008064051A (en) * | 2006-09-08 | 2008-03-21 | Toyota Motor Corp | Fuel injection valve for internal combustion engine with oil-repellent coating |
| CN108236403B (en) * | 2016-12-23 | 2024-01-16 | 广东美的生活电器制造有限公司 | Pulping method of food processor |
| CN108236396B (en) * | 2016-12-23 | 2024-01-16 | 广东美的生活电器制造有限公司 | Pulping method of food processor |
-
1993
- 1993-02-17 JP JP5027694A patent/JP3039830B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06237861A (en) | 1994-08-30 |
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