JP4626173B2 - Vacuum double structure heating vessel - Google Patents

Vacuum double structure heating vessel Download PDF

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JP4626173B2
JP4626173B2 JP2004112604A JP2004112604A JP4626173B2 JP 4626173 B2 JP4626173 B2 JP 4626173B2 JP 2004112604 A JP2004112604 A JP 2004112604A JP 2004112604 A JP2004112604 A JP 2004112604A JP 4626173 B2 JP4626173 B2 JP 4626173B2
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getter
vacuum
heating
inner cylinder
insulating layer
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JP2005296083A (en
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博 植田
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Tiger Corp
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Description

本発明は、電磁調理器や電熱器などによって加熱されるマグカップ、鍋、ケトル、ポット、コップ等に用いられ、少なくとも容器側部の一部が二重構造でその間が真空に保たれる真空二重構造の加熱容器であり、この二重構造部分にガスを吸着するゲッターを配設したものに関する。   The present invention is used in mugs, pans, kettles, pots, cups, etc. that are heated by an electromagnetic cooker, electric heater, etc., and at least a part of the container side is a double structure and a vacuum is maintained between them. The present invention relates to a heating container having a heavy structure in which a getter for adsorbing a gas is disposed in the double structure part.

ホテルや旅館などには、例えば湯沸かし用の電磁調理器や電熱器(コイル状ヒータのものやセラミックヒータなどを含む)が置かれており、これらの上にマグカップやポットなどの加熱容器を載置し、容器内に満たされた水やお茶などの液体を加熱できる。   In hotels and inns, for example, electromagnetic cookers and electric heaters (including coil heaters and ceramic heaters) for water heaters are placed, and heating containers such as mugs and pots are placed on them. In addition, liquids such as water and tea filled in the container can be heated.

上記加熱容器は一重のステンテス鋼製の容器が採用されており、そのため加熱を行うと、容器全体が熱くなり、容器側面などに誤って手を触れると火傷を負うといった事故を引き起こしていた。   As the heating container, a single stainless steel container is employed. Therefore, when the container is heated, the entire container is heated, and if the hand is touched by mistake on the side of the container, an accident such as a burn is caused.

また、このステンレス鋼製の加熱容器は底面から加熱された熱が、側面を経て容器全体に伝導して放熱されるので、保温力が劣り熱効率が低かった。   In addition, since the heat heated from the bottom surface of this stainless steel heating container is conducted to the entire container through the side surface and dissipated, the heat retention is poor and the heat efficiency is low.

この改善策としては、特開平7−290175号公報の図16に示された真空二重構造の加熱容器が採用され、上記欠点を解消している。   As an improvement measure, a heating container having a vacuum double structure shown in FIG. 16 of Japanese Patent Laid-Open No. 7-290175 is employed to eliminate the above-mentioned drawbacks.

ところが、加熱容器における少なくとも側部を二重構造として、その間を真空断熱層とするものであっても、期間の経過にともなってこの真空断熱層に残存していた不純なガスや金属材料などから発生するガスによって真空度に支障をきたし、期待された断熱効果を得られなくなることがあった。   However, even if the heating container has a double structure at least on the side, and a vacuum insulation layer between the two, the impure gas or metal material remaining in the vacuum insulation layer as the period elapses. The generated gas may interfere with the degree of vacuum, and the expected heat insulation effect may not be obtained.

そこで、真空断熱層の内部に予めチタン合金やジルコニウム合金製(例えばZr−V−Fe三元合金系非蒸発性ゲッターなど)で、不純なガス分子を吸着する性能を有するゲッターを配設することが考えられている(例えば特開2004−16741号公報)。
また、金属製の内筒と外筒の二重構造で、内外両筒間に形成された真空断熱層内に層内のガスを吸着させるゲッターを配設した真空二重構造の断熱容器も提案されている(特開2002−348152号公報)。
Therefore, a getter made of a titanium alloy or a zirconium alloy (for example, a Zr-V-Fe ternary alloy non-evaporable getter, etc.) and having the capability of adsorbing impure gas molecules is disposed inside the vacuum heat insulating layer. (For example, JP 2004-16741 A).
We also propose a vacuum double-insulated container with a double structure consisting of a metal inner cylinder and outer cylinder, with a getter that adsorbs the gas in the layer in the vacuum heat-insulating layer formed between the inner and outer cylinders. (Japanese Patent Laid-Open No. 2002-348152).

特開平7−290175号公報(図16)JP-A-7-290175 (FIG. 16) 特開2004−16741号公報(第5頁)JP 2004-16741 A (page 5) 特開2002−348152号公報JP 2002-348152 A

前記真空断熱層内におけるゲッターの配設位置は、製造工程において配設しやすい任意の位置に設けられてきたため、電磁調理器などの加熱源から熱的または電磁的な影響を受けることがあり、高温となってゲッターが活性化され、せっかく吸着したガス分子を真空断熱層内へ再び放出して真空断熱性を阻害することとなっていた。
また、ゲッターが幾度も高温に晒されると、寿命の低下を引き起し、ガス分子の吸着に支障をきたして真空断熱層内の真空度の劣化を生じる。
The getter placement position in the vacuum heat insulating layer has been provided at any position that is easy to be placed in the manufacturing process, and may be affected by heat or electromagnetic influence from a heating source such as an electromagnetic cooker, The getter was activated at a high temperature, and the adsorbed gas molecules were released again into the vacuum heat insulating layer to hinder the vacuum heat insulating property.
Further, when the getter is exposed to a high temperature several times, the lifetime is shortened, the adsorption of gas molecules is hindered, and the degree of vacuum in the vacuum heat insulating layer is deteriorated.

そこで、本発明の目的は、ゲッターが加熱時の磁界や熱により活性化されて、ゲッターに吸着したガスを排出するようなことがなく、真空断熱層における真空度の低下を防止して断熱効果を長期間にわたって維持できるようにすると共に、ゲッターの延命化を図る加熱容器を提供することにある。   Therefore, the object of the present invention is to prevent the reduction of the degree of vacuum in the vacuum heat insulating layer by preventing the getter from being activated by the magnetic field or heat during heating and discharging the gas adsorbed on the getter. It is an object of the present invention to provide a heating container that can maintain the getter for a long time and prolong the life of the getter.

上記目的を達成するため、本発明は、容器側部が金属製の内筒と外筒の二重構造にされ、これら内筒と外筒の間に真空断熱層が形成され、前記内筒の下部に一重の金属製の底板が設けられ、この底板を加熱源により加熱する構成であり、前記真空断熱層内にはこの層内のガスを吸着させるゲッターが配設されて、液体を収納する真空二重構造の加熱容器において、前記ゲッターは、加熱源からの熱や磁界の影響を受けず、ゲッターに吸着されたガスが排出されない高さ位置で、内筒の外面側に設けられていることを特徴とする(請求項1参照)。 To achieve the above object, the present invention is, container side is set to the double structure of the metallic inner cylinder and an outer cylinder, a vacuum heat insulating layer is formed between the inner cylinder and the outer cylinder, the inner cylinder single metallic base plate to the lower part is provided, a configuration for heating the bottom plate by the heating source, the getter for adsorbing the gas in this layer in the vacuum heat insulating layer is arranged, housing a liquid in the heating vessel of the vacuum double structure, before Symbol getter chromatography is unaffected by heat or a magnetic field from the heating source, at a height position that adsorbed gas is not discharged to the getter is provided on the outer surface side of the inner cylinder (Refer to claim 1).

すなわち、ゲッターは電熱器や電磁調理器から発せられる熱や磁気の影響を強く受けることのない位置に配設されるので、ゲッター自体が高い温度に加熱されて活性化されるのを防止し、吸着されたガス分子が排出されて真空断熱層の内部に滞留しないようにする。これにより、真空断熱層内の真空度を高度に保ち断熱性能を長期間にわたって維持し続けることができるとともに、ゲッターの延命化が図られる。   In other words, the getter is disposed at a position that is not strongly affected by heat and magnetism generated from an electric heater or an electromagnetic cooker, so that the getter itself is prevented from being heated and activated at a high temperature, The adsorbed gas molecules are discharged so as not to stay in the vacuum heat insulating layer. As a result, the degree of vacuum in the vacuum heat insulating layer can be maintained at a high level and the heat insulating performance can be maintained over a long period of time, and the life of the getter can be extended.

また、本発明においては、ゲッターは、該ゲッターの下端が加熱容器の最下面から5mm以上離れた高さ位置に設けられていることを特徴とする(請求項2参照)。 In the present invention, the getter chromatography is characterized in that the lower end of the getter is provided at a height position spaced above 5mm from the lowermost surface of the heating container (see claim 2).

ゲッターの配設位置としては、加熱容器の最下面(面に限らず、条状または点状突起の集合も含み、主として底板の下面または底部材の下面のこと)からゲッターの下端までの距離(高さ)が、好ましくは5mm以上とし、さらに好ましくは10mm以上とすることが推奨される。
上記加熱容器の最下面は電磁調理器や電熱器の載置面と接する面であり、最下面と前記載置面は同じレベルにある。
The position of the getter is the distance from the lowermost surface of the heating container (not limited to the surface, including a collection of strips or point-like projections, mainly the lower surface of the bottom plate or the lower surface of the bottom member) to the lower end of the getter ( The height) is preferably 5 mm or more, and more preferably 10 mm or more.
The bottom surface of the heating container is a surface in contact with the mounting surface of the electromagnetic cooker or electric heater, and the bottom surface and the mounting surface are at the same level.

すなわち、上述の距離を隔てることにより、電磁調理器の磁気や電熱器の加熱面から乖離され、磁気や加熱の影響を高く受けることはなく、ゲッターが活性化されることは無い。   That is, by separating the above-mentioned distance, it is separated from the magnetism of the electromagnetic cooker and the heating surface of the electric heater, and is not highly influenced by magnetism or heating, and the getter is not activated.

なお、本発明においては、ゲッターは内筒の外面に直接接することなく、これらとの間に真空部を介在することもできる In the present invention, the getter does not directly contact the outer surface of the inner cylinder, and a vacuum part can be interposed between them .

加熱された底板から内筒、外筒または真空断熱層の底部に熱が伝導されることになるが、ゲッターは直接これらの部材に接触することなく、例えば後述のゲッターカバーを介して取付けられることになるので、熱がこれらの部材を介してゲッターに直接的に伝導されず、ゲッターが高い温度に加熱されることはない。そのため、ゲッターが活性化されて吸着したガス分子が真空断熱層内へ排出されることはなく、高い真空度を長い期間維持し続けることができるし、ゲッターの延命化も図られる。 Heat is conducted from the heated bottom plate to the inner cylinder, outer cylinder or the bottom of the vacuum heat insulating layer, but the getter is not directly in contact with these members, for example , attached via a getter cover described later. since the heat is not directly conducted to the getter through these members, there is no possibility that the getter is heated to a high temperature. Therefore, the gas molecules adsorbed by the activation of the getter are not discharged into the vacuum heat insulating layer, the high degree of vacuum can be maintained for a long period, and the life of the getter can be extended.

すなわち、ゲッターはゲッターカバーを介して内筒に取付ける。 That is, the getter Ru attached to the inner cylinder through the getter cover.

これによれば、ゲッターは内筒の内側に満たす液体(主に冷水や温水)に接しているので、内筒の温度は沸点(摂氏約100度)以上に加熱されることはなく、仮にゲッターがこの温度まで熱せられても、チタン合金やジルコニウム合金製のゲッターはこの程度の温度では活性化されることはない。そのため、ゲッターが活性化されて吸着したガス分子が真空断熱層内へ排出されることはなく、高い真空度を長い期間維持し続けることができる。
また、ゲッターカバーは熱伝導性の低い304系ステンレス鋼やセラミック材、熱硬化性合成樹脂材を用いれば、さらに熱伝導を抑制することになる。
According to this, the getter since the contact with the liquid (mainly cold and hot water) meet inside the inner cylinder, the temperature of the inner cylinder is not be heated above the boiling point (about 100 degrees Celsius), if Even if the getter is heated to this temperature, the getter made of titanium alloy or zirconium alloy is not activated at this temperature. Therefore, gas molecules adsorbed by the activation of the getter are not discharged into the vacuum heat insulating layer, and a high degree of vacuum can be maintained for a long period.
Further, if the getter cover is made of 304 stainless steel, ceramic material, or thermosetting synthetic resin material having low heat conductivity, heat conduction is further suppressed.

本発明においては、ゲッターの配設位置の上限は加熱容器の内筒に満たす液体の満水位置より下方位置に設けられる。 In the present invention, the upper limit of the installation position of the getter et provided at a lower position is from full water level position of liquid filling the inner tube of the heating vessel.

すなわち、容器内に液体(水)が満たされる満水位置より、下方位置にゲッターを配置すれば、前述と同様の理由からゲッターは水の沸点以上は加熱されず、活性化される恐れはない。 That is, if the getter is disposed at a position below the full position where the liquid (water) is filled in the container, the getter is not heated above the boiling point of water for the same reason as described above, and there is no fear of being activated.

請求項1の発明によれば、ゲッターは、加熱源から熱や磁界の影響を受けず、ゲッターに吸着されたガスが排出されない高さ位置で、内筒の外面側に設けられているので、ゲッターは内筒に収納された液体の沸点を越えて加熱されないため、ゲッターが活性化されて吸着したガス分子が真空断熱層内へ排出されることはなく、高い真空度を長い期間維持して優れた断熱保温効果を発揮できる。
また、ゲッターが加熱されて活性化されることにより該ゲッターに吸着したガスの排出を行うことがなくなり、ゲッター自体の寿命の低下を引き起こすことがなくなる。
According to the invention of claim 1, the getter is not affected by heat or a magnetic field from the heating source, and is provided at the height position where the gas adsorbed by the getter is not discharged, so that the getter is provided on the outer surface side of the inner cylinder. Since the getter is not heated beyond the boiling point of the liquid stored in the inner cylinder, the getter is activated and the adsorbed gas molecules are not discharged into the vacuum insulation layer, and the high vacuum is maintained for a long period. Excellent thermal insulation effect can be demonstrated.
Further, when the getter is heated and activated, the gas adsorbed on the getter is not discharged, and the lifetime of the getter itself is not reduced.

請求項2の発明によれば、ゲッターは、該ゲッターの下端が加熱容器の最下面から5mm以上離れた高さ位置に設けられて熱や磁界の影響を受けることがないので、より一層、ゲッターが活性化されて吸着したガス分子が真空断熱層内へ排出されることはなく、高い真空度を長い期間維持し続けることができるとともに、ゲッターの延命化が図られる。 According to the invention of claim 2, getter, since no lower end of the getter affected been found provided at a height position spaced above 5mm from the lowermost surface heat and magnetic field of the heating vessel, even more, Gas molecules activated and adsorbed by the getter are not discharged into the vacuum heat insulating layer, and a high degree of vacuum can be maintained for a long period of time, and the life of the getter can be extended.

図1は本発明の一実施例を示す断面図である。この例においては加熱容器としてはマグカップを示しているが、ポット、コップ、鍋などにも適用される。鎖線に示す電磁調理器2の収容凹部2a上に加熱容器1が載置される(符号68は誘導加熱コイルを示す)。この加熱容器1の側部は内筒20と外筒21の二重構造に形成され、これらの間に真空断熱層22が形成されると共に、内筒20の下端と外筒21の下端は真空断熱層の底部23を介して密封される(相互に溶接接合される)。
これら内筒20と外筒21は、本実施例では、一枚の金属板によって一体的に形成され、この製法は後述する図4において詳しく説明する。これら内筒20と外筒21は非磁性の金属板(例えば304系ステンレス鋼)で形成することが望ましい。
FIG. 1 is a sectional view showing an embodiment of the present invention. In this example, a mug is shown as the heating container, but it can also be applied to pots, cups, pans, and the like. Heating container 1 is placed on housing recess 2a of electromagnetic cooker 2 indicated by the chain line (reference numeral 68 indicates an induction heating coil). The side part of the heating container 1 is formed in a double structure of the inner cylinder 20 and the outer cylinder 21, and a vacuum heat insulating layer 22 is formed between them, and the lower end of the inner cylinder 20 and the lower end of the outer cylinder 21 are vacuum. It is sealed through the bottom 23 of the heat insulating layer (welded to each other).
In this embodiment, the inner cylinder 20 and the outer cylinder 21 are integrally formed by a single metal plate, and this manufacturing method will be described in detail in FIG. The inner cylinder 20 and the outer cylinder 21 are preferably formed of a nonmagnetic metal plate (for example, 304 series stainless steel).

また、上記内筒20の下端は底板10と全周接合(溶接接合)され、その内部に液体(水)Wを収容する空間を形成する。この底板10は誘導加熱される磁性体(例えば430系ステンレス鋼)によって形成されることが好ましい(電熱器を用いる場合には磁性/非磁性は考慮の対象とはならず、熱伝導性を考慮する)。上記内筒20の下端と底板10との接合は溶接接合し、全周に溶接部29を形成する。 Moreover, the lower end of the inner cylinder 20 is joined to the bottom plate 10 all around (welding), and a space for containing the liquid ( water) W is formed therein. The bottom plate 10 is preferably formed of a magnetic material (for example, 430 stainless steel) that is induction-heated (in the case of using an electric heater, magnetic / non-magnetic is not considered, and thermal conductivity is considered). To do). Joined to the bottom end and the bottom plate 10 of the inner cylinder 20 is welded to form a welded portion 29 in the entire circumference.

前記真空断熱層の底部23と底板10の外周には環状段部31を形成し、この環状段部31に熱硬化性合成樹脂製の底部材40が嵌合される。この底部材40は図中右側のビス孔45を介して図示しない把手をビスによって取り付ける。また、この底部材40の最下面は底板10の下面より下側に配設され、金属製の底板10が直接に電磁調理器2の載置面に接して傷つくのを防止する。すなわち、合成樹脂製の底部材40の最下面が上記載置面に接触するようにしてある。なお、底板10の下面が平滑で柔軟な構造のときは、底部材40の下面と同一平面となるようにしても良いし、或いは底部材40そのものを設けないものであっても実施できる。   An annular step portion 31 is formed on the outer periphery of the bottom portion 23 and the bottom plate 10 of the vacuum heat insulating layer, and a thermosetting synthetic resin bottom member 40 is fitted to the annular step portion 31. The bottom member 40 is attached with a handle (not shown) with a screw through a screw hole 45 on the right side in the drawing. Further, the bottom surface of the bottom member 40 is disposed below the bottom surface of the bottom plate 10 to prevent the metal bottom plate 10 from directly contacting the mounting surface of the electromagnetic cooker 2 and being damaged. That is, the bottom surface of the synthetic resin bottom member 40 is in contact with the mounting surface. When the bottom surface of the bottom plate 10 has a smooth and flexible structure, the bottom plate 10 may be flush with the bottom surface of the bottom member 40, or the bottom member 40 itself may be omitted.

真空断熱層22には、この層内のガスを吸着するためのゲッター5と、真空断熱層22を形成するために真空引きするための排気孔28が設けられている。
排気孔28は外筒21の一部に設けられ、加熱容器(底部材40は省く)1を真空加熱炉(図示せず)において真空排気した後、この排気孔28をろう材などの封止材によって塞いで、真空断熱層22を真空に保っている。
The vacuum heat insulating layer 22 is provided with a getter 5 for adsorbing the gas in this layer and an exhaust hole 28 for evacuating to form the vacuum heat insulating layer 22.
The exhaust hole 28 is provided in a part of the outer cylinder 21, and after the heating vessel (the bottom member 40 is omitted) 1 is evacuated in a vacuum heating furnace (not shown), the exhaust hole 28 is sealed with a brazing material or the like. The vacuum heat insulating layer 22 is kept in a vacuum by being covered with a material.

ゲッタ−5は、図2または図3に示すように、円柱形に形成されたチタン合金やジルコニウム合金等によって形成される。その表面を真空断熱層内に多く露出させるため、帯状部材の組み合わせで構成されたゲッターカバー51によって保持されて内筒20の外面側に取付けられる。
上記ゲッターカバー51は、十字形で屈曲された上片部材52と下片部材53によって構成され、下片部材53と上片部材52は取付部54a,54aにおいて溶接接合され(符号54c,54cにおいても接合可能)、上片部材52の他の屈曲部は取付部54b,54bにおいて溶接接合によって内筒20に取付られる。
As shown in FIG. 2 or FIG. 3, the getter 5 is formed of a titanium alloy, a zirconium alloy, or the like formed in a cylindrical shape. In order to expose a large amount of the surface in the vacuum heat insulating layer, the surface is held by a getter cover 51 constituted by a combination of band-shaped members and attached to the outer surface side of the inner cylinder 20.
The getter cover 51 is composed of an upper piece member 52 and a lower piece member 53 bent in a cross shape, and the lower piece member 53 and the upper piece member 52 are welded and joined at attachment portions 54a and 54a (reference numerals 54c and 54c). The other bent portion of the upper piece member 52 is attached to the inner cylinder 20 by welding at the attachment portions 54b and 54b.

このようにゲッターカバー51を介することにより、ゲッター5は内筒20に直接接触しないように設けられる(真空部を介している)ので、これら部材から直接熱伝導を受けることがなく、熱や磁界の影響を高く受けることがない。
また、ゲッターカバー51を熱伝導率の低い金属材料(例えば304系ステンレス鋼)や熱硬化性合成樹脂(フェノール樹脂、メラミン樹脂など)、セラミック材料を用いれば、これら部材からの熱伝導をさらに低くすることができる。
Since the getter 5 is provided so as not to be in direct contact with the inner cylinder 20 through the getter cover 51 in this way (via a vacuum part), it does not receive direct heat conduction from these members, and heat and magnetic fields are not received. Is not highly affected by
Further, if the getter cover 51 is made of a metal material having low thermal conductivity (for example, 304 series stainless steel), a thermosetting synthetic resin (phenol resin, melamine resin, etc.), or a ceramic material, the heat conduction from these members can be further reduced. can do.

このゲッター5の真空断熱層22内における配設高さは、図1に示すように加熱容器1の最下面(電磁調理器の載置面)を基準面として、この基準面からゲッター5の下端までの距離Hとしてあらわす。
誘導加熱コイル68(または電熱器のヒータ)からの磁界および(または)熱の影響を受けない距離Hは好ましくは5mm以上とし、さらに好ましくは10mm以上とするとが推奨される。図1のように前記載置面と底板10が直接接しない場合、この底板10は載置面から離れ過ぎると加熱効率が低下するため、この離間距離は1−3mm以内となるので、加熱される底板10から5mm以上離れた位置にゲッター5を設けることが推奨される。
また、図1のように外筒21の下側に環状段部31が設けられ、この環状段部31の高さ(載置面から底部23の下面までの距離)を5mm以上と設定する場合には、ゲッター5の下端は真空断熱層の底部23の上面から2mm以上離間させることが望ましい。
ただし、上記ゲッター5の取付位置は、上述の数値に限定されるものではなく、適宜選定できる。
The arrangement height of the getter 5 in the vacuum heat insulating layer 22 is as shown in FIG. 1, with the lowermost surface of the heating container 1 (the surface on which the electromagnetic cooking device is placed) as the reference surface, and the lower end of the getter 5 from the reference surface. It is expressed as the distance H.
It is recommended that the distance H not affected by the magnetic field and / or heat from the induction heating coil 68 (or the heater of the electric heater) is preferably 5 mm or more, and more preferably 10 mm or more. In the case where the mounting surface and the bottom plate 10 are not in direct contact with each other as shown in FIG. 1, since the heating efficiency is lowered if the bottom plate 10 is too far from the mounting surface, the separation distance is within 1 to 3 mm. It is recommended to provide the getter 5 at a position 5 mm or more away from the bottom plate 10.
In addition, as shown in FIG. 1, an annular step 31 is provided below the outer cylinder 21, and the height of the annular step 31 (distance from the placement surface to the bottom surface of the bottom 23) is set to 5 mm or more. For this reason, it is desirable that the lower end of the getter 5 be separated from the upper surface of the bottom 23 of the vacuum heat insulating layer by 2 mm or more.
However, the mounting position of the getter 5 is not limited to the above numerical values, and can be selected as appropriate.

ゲッター5の配設位置の上限は、該ゲッターの上端が加熱容器1に収容する液体(主として水W)の満水位置Fより下に設けることが望ましい。すなわち、ゲッター5の上端が上記満水位置Fより下方になるように設けることで、ゲッター5の温度が当該液体の沸点を越えて加熱されないようにする。 The upper limit of the arrangement position of the getter 5 is preferably provided below the full water position F of the liquid (mainly water W) contained in the heating container 1 at the upper end of the getter . That is, by providing the upper end of the getter 5 below the full water position F, the temperature of the getter 5 is prevented from exceeding the boiling point of the liquid.

図4(A)から(D)は金属製の筒50によって内筒20および外筒21を一体形成する例を示す工程説明図である。(A)においてロール加工や押し出し加工よって両端開口の金属製の筒50を用意し、そして筒50の外側所定位置にゲッタカバー51を介してゲッター5を取り付ける。
ついで、筒50の下端を固定治具で保持すると共に、上端を押し込み治具に当ててこの押し込み治具を降下させ、筒50の上端を外側へ巻き込み、さらに押し込み治具を下降させて(B)のように内筒20と外筒21を一体的に形成する。
Figure 4 (A) (D) are process explanatory views showing an example of integrally forming an inner cylinder 20 and the outer cylinder 21 by a metal cylinder 50. In (A), a metal cylinder 50 having openings at both ends is prepared by roll processing or extrusion processing, and the getter 5 is attached to a predetermined position outside the cylinder 50 via a getter cover 51.
Next, while holding the lower end of the cylinder 50 with a fixing jig, the upper end is applied to the pushing jig to lower the pushing jig, the upper end of the cylinder 50 is wound outward, and the pushing jig is further lowered (B ), The inner cylinder 20 and the outer cylinder 21 are integrally formed.

次いで、内筒20の下端に底板10を突き合わせて(C)のように溶接部29を全周に施して接合する。そして外筒21の下端と内筒20の外側壁を環状の底部23によって覆うように密封するために(D)のように相互に溶接接合する。 Next, the bottom plate 10 is butted against the lower end of the inner cylinder 20, and the welded portion 29 is applied to the entire circumference as shown in FIG. And in order to seal so that the lower end of the outer cylinder 21 and the outer wall of the inner cylinder 20 may be covered with the annular bottom 23, they are welded together as shown in (D) .

上述の図4の例においては、筒50は外側へ巻き込む例を示したが、反対に筒50の内側へ巻き込む工法を採用しても良く、このときゲッターは筒の内面側の所定位置に取り付けておけば、最終的に外筒の内側にゲッターが固定されたものに形成できる。   In the example of FIG. 4 described above, an example in which the cylinder 50 is wound outward has been shown, but conversely, a method of winding inside the cylinder 50 may be adopted, and at this time, the getter is attached to a predetermined position on the inner surface side of the cylinder. In this case, the getter can be finally formed inside the outer cylinder.

本発明は、マグカップ、鍋、ケトル、ポット、コップなどにおける側部の少なくとも一部に二重構造の真空断熱層が形成されたものを含む。   The present invention includes a mug, a pot, a kettle, a pot, a cup and the like in which a double-layer vacuum heat insulating layer is formed on at least a part of the side.

本発明の実施例の断面図である。It is sectional drawing of the Example of this invention. ゲッターとゲッターカバーを示す正面図である。It is a front view which shows a getter and a getter cover. 図2の左側面図である。FIG. 3 is a left side view of FIG. 2. (A)から(D)は本発明品の製造工程例を示す説明図である。(A)- (D) are explanatory drawings which show the example of a manufacturing process of this invention product.

1 加熱容器
2 電磁調理器(加熱源)
5 ゲッター
10 底板
20 内筒
21 外筒
22 真空断熱層
23 真空断熱層の底部
28 排気孔
31 環状段部
40 底部材
50 筒
51 ゲッターカバー
52 上片部材
53 下片部材
54a,54b,54c 取付部
1 Heating container 2 Electromagnetic cooker (heating source)
DESCRIPTION OF SYMBOLS 5 Getter 10 Bottom plate 20 Inner cylinder 21 Outer cylinder 22 Vacuum heat insulation layer 23 Bottom part of vacuum heat insulation layer 28 Exhaust hole 31 Annular step part 40 Bottom member 50 Cylinder 51 Getter cover 52 Upper piece member 53 Lower piece member 54a, 54b, 54c Attachment part

Claims (2)

容器側部が金属製の内筒と外筒の二重構造にされ、これら内筒と外筒の間に真空断熱層が形成され、前記内筒の下部に一重の金属製の底板が設けられ、この底板を加熱源により加熱する構成であり、記真空断熱層内にはこの層内のガスを吸着させるゲッターが配設されて、液体を収納する真空二重構造の加熱容器において、前記ゲッターは、加熱源からの熱や磁界の影響を受けず、ゲッターに吸着されたガスが排出されない高さ位置で、内筒の外面側に設けられていることを特徴とする真空二重構造の加熱容器。 Container side is set to the double structure of the metallic inner cylinder and an outer cylinder, a vacuum heat insulating layer is formed between the inner cylinder and the outer cylinder, is pre-Symbol inner cylinder lower singlet metallic bottom plate of the provided is a structure for heating the bottom plate by the heating source, before Symbol vacuum insulation layer is disposed getter for adsorbing the gas in this layer, the heating vessel of the vacuum double structure housing the liquid, the getter chromatography is unaffected by heat or a magnetic field from the heating source, the vacuum double, characterized in that at the level of adsorbed gas is not discharged to the getter is provided on the outer surface side of the inner cylinder Structure heating container. ゲッターは、該ゲッターの下端が加熱容器の最下面から5mm以上離れた高さ位置に設けられている請求項1に記載の真空二重構造の加熱容器。 Getter over the heating vessel of the vacuum double structure according to claim 1 in which the lower end of the getter is provided at a height position spaced above 5mm from the lowermost surface of the heating vessel.
JP2004112604A 2004-04-06 2004-04-06 Vacuum double structure heating vessel Expired - Fee Related JP4626173B2 (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07289449A (en) * 1994-04-28 1995-11-07 Tiger Vacuum Bottle Co Ltd Vacuum enclosing structure of metallic vacuum heat retaining container
JPH07290175A (en) * 1994-04-28 1995-11-07 Zojirushi Corp Manufacture of metallic double structure
JPH08173331A (en) * 1994-12-27 1996-07-09 Nippon Sanso Kk Vacuum thermal insulating layer
JPH09187370A (en) * 1996-01-12 1997-07-22 Toshiba Corp Cooking vessel for electromagnetic cooking
JP2002348152A (en) * 2001-05-29 2002-12-04 Tiger Vacuum Bottle Co Ltd Metallic vacuum double container and method for making the same, sealing composition
JP2003207092A (en) * 2002-01-17 2003-07-25 Zojirushi Corp Vacuum structure made of metal
JP2004016741A (en) * 2002-06-20 2004-01-22 Zojirushi Corp Metal vacuum double container and its production method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07289449A (en) * 1994-04-28 1995-11-07 Tiger Vacuum Bottle Co Ltd Vacuum enclosing structure of metallic vacuum heat retaining container
JPH07290175A (en) * 1994-04-28 1995-11-07 Zojirushi Corp Manufacture of metallic double structure
JPH08173331A (en) * 1994-12-27 1996-07-09 Nippon Sanso Kk Vacuum thermal insulating layer
JPH09187370A (en) * 1996-01-12 1997-07-22 Toshiba Corp Cooking vessel for electromagnetic cooking
JP2002348152A (en) * 2001-05-29 2002-12-04 Tiger Vacuum Bottle Co Ltd Metallic vacuum double container and method for making the same, sealing composition
JP2003207092A (en) * 2002-01-17 2003-07-25 Zojirushi Corp Vacuum structure made of metal
JP2004016741A (en) * 2002-06-20 2004-01-22 Zojirushi Corp Metal vacuum double container and its production method

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