JPS62189021A - Container of electric pot - Google Patents
Container of electric potInfo
- Publication number
- JPS62189021A JPS62189021A JP2666887A JP2666887A JPS62189021A JP S62189021 A JPS62189021 A JP S62189021A JP 2666887 A JP2666887 A JP 2666887A JP 2666887 A JP2666887 A JP 2666887A JP S62189021 A JPS62189021 A JP S62189021A
- Authority
- JP
- Japan
- Prior art keywords
- container
- welding
- plate
- heater
- electric 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims description 7
- 239000011733 molybdenum Substances 0.000 claims description 7
- 239000010955 niobium Substances 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 5
- 239000010936 titanium Substances 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010953 base metal Substances 0.000 claims description 3
- 229910000669 Chrome steel Inorganic materials 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 9
- 238000000137 annealing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 235000013334 alcoholic beverage Nutrition 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
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明はステンレス容器を用いて構成され、水や酒等の
液体を加熱する電器湯沸器等の容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 container such as an electric water heater that is constructed using a stainless steel container and heats a liquid such as water or alcoholic beverage.
従来例の構成とその問題点
従来、この種の電気湯沸器等の容器は５ＵＳ３０４（Ｎ
ｉＣｒ ステンレス）材をプレス絞り加工により容器３
１を形成し、第６図に示すように構成されていた。この
第６図において、３２は容器３１の下部外周に巻装され
たヒーター、３３は容器３１の下面に固着されたサーモ
スタットである。Conventional structure and problems Conventionally, containers for this type of electric water heater, etc. were 5US304 (N
Container 3 is made of iCr (stainless steel) material by press drawing.
1 and was constructed as shown in FIG. In FIG. 6, 32 is a heater wrapped around the lower outer periphery of the container 31, and 33 is a thermostat fixed to the lower surface of the container 31.
この従来の容器においては下記の欠点を有していた。This conventional container had the following drawbacks.
Ｈ） ５ＵＳ３０４材をプレス加工すると板材内部に
応力が生じ、湯沸しによって金属の粒界腐食が生じ、応
力腐食割れを生じ、著しく寿命を短くする。H) When 5US304 material is pressed, stress is generated inside the plate material, intergranular corrosion of the metal occurs due to boiling water, stress corrosion cracking occurs, and the life of the material is significantly shortened.
（ｉ：Ｉ） 前記のむ力を除去するため８００′Ｃ〜
１０００℃に於て焼鈍処理を行うと容器３１のヒーター
３２の取付部等が歪み、ヒーター３２との密着性が低下
し、熱効率を悪くすると共に焼鈍処理ＶＣ高いコストが
かかる。(i:I) 800'C ~ to remove the above-mentioned straining force
When the annealing treatment is performed at 1000° C., the mounting portion of the heater 32 of the container 31 is distorted, the adhesion with the heater 32 is reduced, the thermal efficiency is deteriorated, and the annealing treatment VC is expensive.
（ハ）絞り加工では容器３１の下部の角部が大きな曲率
半径Ｒ７となる。この角部にはヒーター３２が取付けら
れないのでヒーター３２の下端と容器３１の底面とは距
離が大きくなる。(c) In the drawing process, the lower corner of the container 31 has a large radius of curvature R7. Since the heater 32 is not attached to this corner, the distance between the lower end of the heater 32 and the bottom surface of the container 31 is large.
このため、底面に設けられたサーモスタット３３の距離
が犬きくなり、例えば誤って水を入れずに通電した場合
や底部に少量の水しかない場合、ヒーター３２からサー
モスタット３３への熱供給は容器３１の材質が、５ＵＳ
３０４材でアルミ等と異なり熱伝導率が悪い上に、前記
したように距離が大きいので著しく悪くなり、ヒーター
３２が取付けられている部分の容器３１は高温となって
変色したシ、材料の組織変化によって耐食性を低下させ
る。For this reason, the distance from the thermostat 33 provided on the bottom becomes too small. For example, if you accidentally turn on the electricity without adding water, or if there is only a small amount of water at the bottom, the heat supply from the heater 32 to the thermostat 33 will be limited to the container 31. The material is 5US
304 material has poor thermal conductivity unlike aluminum, etc., and as mentioned above, the distance is large, so it becomes extremely poor, and the container 31 where the heater 32 is attached becomes hot and discolored, and the structure of the material Changes reduce corrosion resistance.
発明の目的
本発明は上記従来の欠点を解消するもので、安価にして
得られ、かつ耐久性にすぐれた電気湯沸器等の容器を提
供することを目的とするものである。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a container for an electric water heater or the like that can be obtained at low cost and has excellent durability.
発明の構成
上記目的を達成するために本発明、ば、平板１羽を円筒
形に曲げ形成し、合わせ目を母材溶接して円筒となし、
この円筒の上端を外方に広げて上フランジを形成し、か
つ下部の開口端に底板を母材溶接して有底円筒形の容器
を形成するとともに、この容器の材質を極低炭素１６〜
２ｏ％クローム鋼にｏ、７５〜３．０％のモリブデンを
加え、さらに０．１〜１％のチタンまだはニオブを添加
したステンレス鋼板としたもので、この構成によれば、
容器が前述した組成のステンレス鋼板により構成されて
いるため、平板材から母材溶接して製作しても、耐食性
が高く、かつ焼鈍処理をする必要もなく、加工が極めて
容易となり、しだがってコスト的にも安価に得ることが
できるものである。Structure of the Invention In order to achieve the above object, the present invention comprises: bending one flat plate into a cylindrical shape, welding the seam to the base material to form a cylinder;
The upper end of this cylinder is expanded outward to form an upper flange, and a base plate is welded to the open end of the lower part to form a bottomed cylindrical container.
This is a stainless steel plate to which 75-3.0% molybdenum is added to 20% chromium steel, and 0.1-1% titanium or niobium is added. According to this configuration,
Since the container is made of stainless steel plate with the above-mentioned composition, even if it is manufactured by welding the base metal from a flat plate, it has high corrosion resistance and does not require annealing, making processing extremely easy and durable. Therefore, it can be obtained at low cost.
実施例の説明
以下、添付図面にもとづいて本発明の実施例について説
明する。DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on the accompanying drawings.
第１図は本発明の容器を電気湯沸し器に適用したもので
ある。１は有底円筒形の容器であシ、円筒部２の下部に
は小径部３が形成してあり、この小径部３にバンド状の
ヒーター４が巻回装着されている。６は円筒部２の上端
に、外方へ広げて形成された上７ランジで、この上フラ
ンジ５は断面が略ト字状の注口６の突出部７にパツキン
８を介して載置されている。９はボデーであシ、その上
端に注口６を載置し、かつ下端に基台１０が嵌合され、
さらに容器１の底板１１に固着された固定金具１２を基
台１０側へ取付ねじ１３で引張り固定することにより、
上７ランジ６がパツキン８を介して注口６をボデー９に
押しつけるため、容器１が注口６と水密的にボデー９内
に固定される。FIG. 1 shows the container of the present invention applied to an electric water heater. Reference numeral 1 is a cylindrical container with a bottom. A small diameter part 3 is formed at the bottom of the cylindrical part 2, and a band-shaped heater 4 is wound around the small diameter part 3. Reference numeral 6 denotes an upper flange 7 formed at the upper end of the cylindrical portion 2 so as to expand outward. ing. 9 is a body, the spout 6 is placed on the upper end, and the base 10 is fitted on the lower end,
Furthermore, by pulling and fixing the fixing fitting 12 fixed to the bottom plate 11 of the container 1 to the base 10 side with the mounting screw 13,
Since the upper 7 langes 6 press the spout 6 against the body 9 via the packing 8, the container 1 is fixed in the body 9 in a watertight manner with the spout 6.
１４はヒーター４への給電を制御して容器１内の水温を
制御する温度調節器であり、容器１の底板１１に押圧ば
ね２５により感熱的に抑圧保持されている。１６は把手
、１６は蓋、１７は蓋つまみである。A temperature regulator 14 controls the water temperature in the container 1 by controlling power supply to the heater 4, and is thermally pressed and held on the bottom plate 11 of the container 1 by a pressure spring 25. 16 is a handle, 16 is a lid, and 17 is a lid knob.
容器１は第２図に示すように、帯状板付を小径部３の径
で円筒状に折り曲げ、かつ合わせ目１８をＴＩＧ溶接方
法（溶接部にアルゴン等の不活性ガスを吹きつけながら
電気アークで母４Ｒを溶して溶接する方法）で溶接する
ことにより、円筒部２が形成される。次に円筒部２をプ
レス型で大径部１９を押し拡げて形成し、上端を外方に
折シ曲げて上フランジ６を形成している。底板１１は外
周を略へ字状に折り曲げて形成され、かつ小径部３の下
端に隙間なく嵌合され、そしてこの嵌合部２０をＴＩＧ
溶接で第３図のように溶接する。この円筒部２及び底板
１１の材質としては、炭素Ｃが０．０３％以下、クロム
なが１５〜２ｏ％、ケイ素Ｓ１が１．０％以下、マンガ
ンＭｎが１．０％以下の極低炭素１７％クローム鋼にモ
リブデンＭＯ０，７５〜３．０％を添加し、さらに０．
１〜１．０％のニオブＮｂまだはチタンＴ１を添加した
フェライト系ステンレス鋼板が使用される。この場合、
カーボンＣを０．０３％以下としたのはＴＩＧ溶接によ
り高温にさらされマルテンサイト組織となることを防ぎ
、この部分が成金溶液に対して極めて錆び易くなること
を防止するものである。さらにモリブデンＭＯは而す食
性を高めるとともに、フェライト組織を維持するためて
添加されている。ニオブＮｂは溶接時に炭素Ｃが析出し
ないようにＣを結合する作用をなし、チタンＴｉはＴｉ
Ｃとして結合し、炭素Ｃの析出を防ぐものである。As shown in Fig. 2, the container 1 is made by bending the belt-shaped plate into a cylindrical shape at the diameter of the small diameter part 3, and by TIG welding the seam 18 (using an electric arc while blowing an inert gas such as argon to the welded part). The cylindrical portion 2 is formed by welding using the method of melting and welding the base 4R. Next, the cylindrical portion 2 is formed by expanding the large diameter portion 19 using a press mold, and the upper end is bent outward to form the upper flange 6. The bottom plate 11 is formed by bending the outer periphery into a substantially F-shape, and is fitted into the lower end of the small diameter portion 3 without a gap, and this fitting portion 20 is
Weld as shown in Figure 3. The material of the cylindrical portion 2 and the bottom plate 11 is an extremely low carbon material containing 0.03% or less of carbon C, 15 to 2o% of chromium, 1.0% or less of silicon S1, and 1.0% or less of manganese Mn. Molybdenum MO0.75 to 3.0% is added to 17% chrome steel, and further 0.75 to 3.0% of molybdenum MO is added.
A ferritic stainless steel plate to which 1 to 1.0% of niobium (Nb) or titanium (T1) is added is used. in this case,
The purpose of setting the carbon C content to 0.03% or less is to prevent formation of a martensitic structure due to exposure to high temperatures during TIG welding, and to prevent this portion from becoming extremely susceptible to rusting in the metal forming solution. Furthermore, molybdenum MO is added to improve edibility and maintain the ferrite structure. Niobium (Nb) acts to bind carbon so that carbon C does not precipitate during welding, and titanium (Ti)
It combines as C and prevents precipitation of carbon C.
このようにしてＴＩＧ溶接で高温にされても耐食性の強
いフェライト系のクローム−モリブデン−ステンレス鋼
が維持される効果を発揮し、全体として母材をアークで
溶接しても耐食性が低下しない。In this way, the ferritic chromium-molybdenum-stainless steel, which has strong corrosion resistance, is maintained even at high temperatures during TIG welding, and the corrosion resistance does not deteriorate as a whole even when the base metal is welded by arc.
それと同時に上記構成のステンレス鋼はＮｉ分が極めて
少ないので、熱伝導率も高いものである。At the same time, since the stainless steel having the above structure has an extremely low Ni content, it also has high thermal conductivity.
このように形成された容器１に、例えばバンド状のヒー
ターを用いる場合は第１図に示すように、小径部３は下
端まで直線の円筒とすることができるので、ヒーター４
は下端面２１が底板１１と略同−高さとなるようにして
取付けることができる。When using a band-shaped heater, for example, in the container 1 formed in this way, the small diameter portion 3 can be a straight cylinder up to the lower end, as shown in FIG.
can be attached so that the lower end surface 21 is approximately at the same height as the bottom plate 11.
第４図及び第５図は本発明の他の実施例を示しだもので
アシ、大径部１９′と小径部３′と上フランジ５′を有
する円筒部２′の小径部３′の下端を内方に折り曲げて
下フランジ部２２を形成し、これに円板状の底板２３を
嵌合し、そして第５図に示すように底面の合わせ目を対
向するＸ点とＹ点の２ケ所よりＴｉｇ溶接して容器１′
を形成したものである。4 and 5 show another embodiment of the present invention, in which the lower end of the small diameter part 3' of the cylindrical part 2' has a large diameter part 19', a small diameter part 3' and an upper flange 5'. is bent inward to form the lower flange portion 22, a disc-shaped bottom plate 23 is fitted to this, and as shown in FIG. Tig weld the container 1'
was formed.
この場合、下７ランジ部２２は折り曲げ形成されるので
角部２４は極めて小さい曲率半径として刀口工でき、前
実施例の如くヒーター４は下端面２１を底板２３と略同
−高さに取付けることができる。In this case, since the lower 7 flange portion 22 is formed by bending, the corner portion 24 can be cut with an extremely small radius of curvature, and the heater 4 can be installed with the lower end surface 21 at approximately the same height as the bottom plate 23 as in the previous embodiment. I can do it.
なお、固定金具１２は底板１１の下面にスポット溶接で
取付けられている。Note that the fixture 12 is attached to the lower surface of the bottom plate 11 by spot welding.
容器１はその材質が極低カーボンでクローム、モリブデ
ン、ニオブ、またはクローム−モリブデン、チタン合金
のステンンスであるため、ＴＩＧ溶接やスポット溶接を
行ったとしても、高温になってマルテンサイト化するこ
とがなく、かつ粒界がモリブデンによって保護されるの
で極めて耐食性がよいものであり、かつ応力が残存して
も応力腐食割れを起こさないものである。Since the container 1 is made of ultra-low carbon stainless steel made of chromium, molybdenum, niobium, or chromium-molybdenum or titanium alloy, even if TIG welding or spot welding is performed, it will not become martensite due to high temperature. Moreover, since the grain boundaries are protected by molybdenum, it has extremely good corrosion resistance and does not cause stress corrosion cracking even if stress remains.
さらに従来例のような焼鈍も不要であり、かつ効率の良
い７１ｇ溶接加工がなされるため、安価にして得られる
という効果を有する。Further, annealing as in the conventional example is not required, and efficient 71g welding is performed, so it has the effect of being obtained at low cost.
発明の効果
以上の説明から明らかなように本発明の電気湯ΔＩ器等
の容器は、その容器を前述した組成のステンレス鋼板に
より構成しているため、平板材から母材溶接して製作し
ても、耐食性が高く、かつ焼鈍処理をする必要もなく、
加工が極めて容易となり、したがってコスト的にも安価
に得ることができる。Effects of the Invention As is clear from the above explanation, the container of the electric hot water ∆I device, etc. of the present invention is constructed from a stainless steel plate having the composition described above, and therefore is manufactured by welding the base material from a flat plate material. It also has high corrosion resistance and does not require annealing.
It is extremely easy to process and therefore can be obtained at low cost.
【図面の簡単な説明】
第１図は本発明の容器を適用した電気湯沸器の実施例を
示す一部欠截断面図、第２図は同容器の一部欠截斜視図
、第３図は同容器の要部断面図、第４図は本発明の他の
実施例を示す電気湯沸器等の容器の分解斜視図、第６図
は同容器の溶接後における要部斜視図、第６図は従来の
電気湯沸器の一部欠截断面図である。
１・・・・容器、６・・・上フランジ、１１・・ ・底
板、２２・・・・下フランジ部。
代理人の氏名 弁理士 中 尾 数 男 ほか１名第１
図
ｑ
第２図
嬉 ４ 図
？３
箔５図[Brief Description of the Drawings] Fig. 1 is a partially cutaway sectional view showing an embodiment of an electric water heater to which the container of the present invention is applied, Fig. 2 is a partially cutaway perspective view of the same container, and Fig. 3 is a partially cutaway perspective view of the same container. 4 is an exploded perspective view of a container such as an electric water heater showing another embodiment of the present invention. FIG. 6 is a perspective view of the main portion of the same container after welding. FIG. 6 is a partially cutaway sectional view of a conventional electric water heater. 1... Container, 6... Upper flange, 11... Bottom plate, 22... Lower flange portion. Name of agent: Patent attorney Kazuo Nakao and 1 other person No. 1
Figure q Figure 2 Happy Figure 4? 3 Foil figure 5
Claims (2)
接して円筒となし、この円筒の上端を外方に広げて上フ
ランジを形成し、かつ下部の開口端に底板を母材溶接し
て有底円筒形の容器を形成するとともに、この容器の材
質を極低炭素１５〜２０％クローム鋼に０．７５〜３．
０％のモリブデンを加え、さらに０．１〜１％のチタン
またはニオブを添加したステンレス鋼板としてなる電気
湯沸器等の容器。(1) Bending a flat plate into a cylindrical shape, welding the seam to the base metal to form a cylinder, expanding the upper end of this cylinder outward to form an upper flange, and attaching a bottom plate to the lower open end. The materials are welded to form a cylindrical container with a bottom, and the material of this container is ultra-low carbon 15-20% chrome steel with 0.75-3.
A container such as an electric water heater made of a stainless steel plate to which 0% molybdenum is added and further 0.1 to 1% titanium or niobium is added.
し、この下フランジ部に底板を母材溶接してなる特許請
求の範囲第１項記載の電気湯沸器等の容器。(2) A container such as an electric water heater according to claim 1, which is formed by bending the lower end of a cylinder inward to form a lower flange, and welding a base plate to the lower flange. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2666887A JPS62189021A (en) | 1987-02-06 | 1987-02-06 | Container of electric pot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2666887A JPS62189021A (en) | 1987-02-06 | 1987-02-06 | Container of electric pot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62189021A true JPS62189021A (en) | 1987-08-18 |
Family
ID=12199782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2666887A Pending JPS62189021A (en) | 1987-02-06 | 1987-02-06 | Container of electric pot |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62189021A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012179389A (en) * | 2012-05-21 | 2012-09-20 | Tiger Vacuum Bottle Co Ltd | Water heating container |
-
1987
- 1987-02-06 JP JP2666887A patent/JPS62189021A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012179389A (en) * | 2012-05-21 | 2012-09-20 | Tiger Vacuum Bottle Co Ltd | Water heating container |
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