TW201922155A - Heating cooking appliance - Google Patents

Heating cooking appliance Download PDF

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Publication number
TW201922155A
TW201922155A TW107137960A TW107137960A TW201922155A TW 201922155 A TW201922155 A TW 201922155A TW 107137960 A TW107137960 A TW 107137960A TW 107137960 A TW107137960 A TW 107137960A TW 201922155 A TW201922155 A TW 201922155A
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Taiwan
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wall portion
sealed space
container
inner pot
heating cooker
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TW107137960A
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Chinese (zh)
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TWI683642B (en
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今井依津果
桝澤岳史
寺島幸之介
大友博
釣田肅雄
榊原啟之
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日商愛麗思歐雅瑪股份有限公司
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Abstract

The present invention provides a heating cooker, which can efficiently heat inner sidewall of the heating cooker. The heating cooker is shaped as a cylinder having a bottom, and has in the interior a double-layer wall structure having enclosed space, characterized in that, the heating cooker includes: an internal container of a cylindrical shape having a bottom, which constitutes an internal portion of the heating cooker; an external container of a cylindrical shape having a bottom, which constitutes an external portion of the heating cooker; and working liquid, which is injected into the enclosed space, the amount of the working liquid in the enclosed space is set as an amount not covering the entire bottom surface of the enclosed space.

Description

加熱烹調器Heating cooker

本發明涉及加熱烹調器。The invention relates to a heating cooker.

下述專利文獻1中記載有加熱管式的加熱烹調器。該加熱烹調器呈現在內部具有密閉空間的雙層壁構造,在密閉空間內注入有工作液。而且,當將加熱烹調器的底部加熱時,工作液沸騰,在工作液中,氣化而成的蒸氣沿著密閉空間的側部上升。由此,加熱烹調器的內側的側壁通過蒸氣來加熱。進而,加熱了側壁的蒸氣進行冷凝,變成液體作為工作液。變成了液體的工作液通過自重而下降,返回到密閉空間的底部內。而且,通過重複進行工作液的上述相變周期,加熱烹調器被加熱。Patent Document 1 listed below discloses a heating tube type heating cooker. This heating cooker exhibits a double-wall structure having a closed space inside, and a working fluid is injected into the sealed space. Further, when the bottom of the heating cooker is heated, the working fluid boils, and in the working fluid, the vaporized vapor rises along the side of the sealed space. Thereby, the side wall of the inner side of the heating cooker is heated by steam. Further, the vapor of the side wall is heated and condensed to become a liquid as a working liquid. The working fluid that has become a liquid descends by its own weight and returns to the bottom of the closed space. Further, the heating cooker is heated by repeating the above-described phase change cycle of the working fluid.

現有技術文獻Prior art literature

參照專利文獻1:日本專利2713008號公報Reference Patent Document 1: Japanese Patent No. 2713008

有鑑於此,吾等發明人乃潛心進一步研究,並著手進行研發及改良,期以一較佳設作以解決上述問題,且在經過不斷試驗及修改後而有本發明之問世。In view of this, our inventors have devote themselves to further research and have initiated research and development and improvement, with a better design to solve the above problems, and have been experimentally and modified to have the present invention.

發明所要解決的課題Problem to be solved by the invention

但是,在上述加熱烹調器中,在以下所示的方面,還有改善的餘地。即,在上述加熱烹調器中,並未對用於高效地將加熱烹調器的內側的側壁加熱的、密閉空間內的工作液的量進行規定。However, in the above-described heating cooker, there is still room for improvement in the following aspects. In other words, in the above-described heating cooker, the amount of the working fluid in the sealed space for efficiently heating the side wall of the inside of the heating cooker is not defined.

本發明是考慮到上述事實而完成的,其目的在於,提供一種加熱烹調器,其能夠高效地將加熱烹調器的內側的側壁進行加熱。The present invention has been made in view of the above circumstances, and an object thereof is to provide a heating cooker capable of efficiently heating a side wall of an inner side of a heating cooker.

用於解決課題的技術方案Technical solution for solving the problem

形態1:本發明的一個或其以上的實施方式提供一種加熱烹調器,形成為有底筒狀,呈現在內部具有密閉空間的雙層壁構造,其特徵為,具備:有底筒狀的內側容器,其構成所述加熱烹調器的內側部分;有底筒狀的外側容器,其構成所述加熱烹調器的外側部分;以及工作液,其被注入至所述密閉空間內,所述密閉空間內的所述工作液的量設定為不覆蓋所述密閉空間的底面整體的量。Aspect 1: One or more embodiments of the present invention provide a heating cooker which is formed in a bottomed cylindrical shape and has a double-wall structure having a closed space inside, and is characterized in that it has a bottomed cylindrical inner side. a container constituting an inner portion of the heating cooker; a bottomed cylindrical outer container constituting an outer portion of the heating cooker; and a working fluid injected into the sealed space, the closed space The amount of the working fluid in the inside is set to an amount that does not cover the entire bottom surface of the sealed space.

形態2:本發明的一個或其以上的實施方式提供一種加熱烹調器,其特徵為,所述密閉空間的所述工作液相對於底部的體積比率設定為4vol%~80vol%。Morphology 2: One or more embodiments of the present invention provide a heating cooker characterized in that the volume ratio of the working liquid phase to the bottom portion of the sealed space is set to 4 vol% to 80 vol%.

形態3:本發明的一個或其以上的實施方式提供一種加熱烹調器,其特徵為,在縱剖視時,所述加熱烹調器的底部的所述密閉空間的高度尺寸設定為所述加熱烹調器的側部的所述密閉空間的寬度尺寸以上,且設定為2mm以上。Aspect 3: One or more embodiments of the present invention provide a heating cooker characterized in that, in a longitudinal section, a height dimension of the closed space of a bottom portion of the heating cooker is set to the heating cooking The closed space of the side portion of the device has a width dimension or more and is set to 2 mm or more.

形態4:本發明的一個或其以上的實施方式提供一種加熱烹調器,其特徵為,所述密閉空間內維持為0.01個標準大氣壓(atm)以下的負壓或真空。Form 4: One or more embodiments of the present invention provide a heating cooker characterized in that a negative pressure or a vacuum of 0.01 standard atmosphere (atm) or less is maintained in the sealed space.

形態5:本發明的一個或其以上的實施方式提供一種加熱烹調器,其特徵為,在所述內側容器的內側側壁部或所述外側容器的外側側壁部,設置有在將所述工作液注入所述密閉空間內時以及將所述密閉空間內製成負壓或真空時所使用的多個管。Morphology 5: One or more embodiments of the present invention provide a heating cooker characterized in that an inner side wall portion of the inner container or an outer side wall portion of the outer container is provided with the working fluid A plurality of tubes used when injected into the sealed space and when the sealed space is made into a negative pressure or a vacuum.

形態6:本發明的一個或其以上的實施方式提供一種加熱烹調器,其特徵為,多個管等間隔地配置在所述加熱烹調器的周向上,在所述管安裝有覆蓋所述管的管罩。Aspect 6: One or more embodiments of the present invention provide a heating cooker characterized in that a plurality of tubes are disposed at equal intervals in a circumferential direction of the heating cooker, and the tube is covered with the tube The tube cover.

形態7:本發明的一個或其以上的實施方式提供一種加熱烹調器,其特徵為,在所述內側容器的內側底壁部與內側側壁部之間形成有向所述內側容器的外側彎曲為凸狀的內側角部,所述內側角部的半徑設定為隨著從所述內側底壁部去往所述內側側壁部而逐漸減小。Aspect 7: One or more embodiments of the present invention provide a heating cooker characterized in that an outer side of the inner container is bent between an inner bottom wall portion and an inner side wall portion of the inner container. The convex inner corner portion is set such that the radius of the inner corner portion gradually decreases as going from the inner bottom wall portion to the inner side wall portion.

形態8:本發明的一個或其以上的實施方式提供一種加熱烹調器,其特徵為,對所述內側容器的構成所述密閉空間的面以及所述外側容器的構成所述密閉空間的面實施了鏡面處理。Aspect 8: An embodiment of one or more aspects of the present invention provides a heating cooker characterized in that a surface constituting the sealed space of the inner container and a surface of the outer container constituting the sealed space are implemented Specular processing.

發明效果Effect of the invention

根據本發明的一個或其以上的實施方式,能夠高效地將加熱烹調器的內側的側壁加熱。According to one or more embodiments of the present invention, the side wall of the inner side of the heating cooker can be efficiently heated.

關於吾等發明人之技術手段,茲舉數種較佳實施例配合圖式於下文進行詳細說明,俾供 鈞上深入瞭解並認同本發明。The invention will be described in detail below with reference to the drawings.

(第一實施方式)(First embodiment)

下面,利用第1圖~第8圖對第一實施方式的作為“加熱烹調器”的內鍋30進行說明。內鍋30作為煮飯用的鍋而構成電飯煲10的一部分。因此,在下面的說明中,首先對電飯煲10的結構進行說明,接下來,對內鍋30的結構進行說明。此外,附圖中適當顯示的箭頭UP表示電飯煲10及內鍋30的上側。而且,在下面的說明中,在顯示上下方向進行說明時,只要沒有特別說明,都表示電飯煲10及內鍋30的上下方向。Next, the inner pot 30 as the "heating cooker" of the first embodiment will be described with reference to Figs. 1 to 8 . The inner pot 30 constitutes a part of the rice cooker 10 as a pot for cooking rice. Therefore, in the following description, the structure of the rice cooker 10 will first be described. Next, the structure of the inner pot 30 will be described. Further, an arrow UP appropriately displayed in the drawing indicates the upper side of the rice cooker 10 and the inner pot 30. In the following description, when the vertical direction is described, the vertical direction of the rice cooker 10 and the inner pot 30 is shown unless otherwise specified.

(關於電飯煲10)(about rice cooker 10)

如第5圖所示,電飯煲10是IH(induction Heating)式的電飯煲,包含電飯煲主體12和蓋部24。As shown in Fig. 5, the rice cooker 10 is an IH (induction heating) type rice cooker, and includes a rice cooker main body 12 and a lid portion 24.

<關於電飯煲主體12><About rice cooker main body 12>

電飯煲主體12具有用於收納後述的內鍋30的內鍋收納部14。該內鍋收納部14呈現向上側敞開的凹狀,並且在從上側看的俯視時,形成為大致圓形狀。在內鍋收納部14的下側設有用於加熱內鍋30的加熱部16。加熱部16由感應線圈構成,感應線圈在內鍋收納部14的下側,捲繞為大致渦卷狀。The rice cooker main body 12 has an inner pot accommodating portion 14 for accommodating the inner pot 30 to be described later. The inner pan accommodating portion 14 has a concave shape that is open to the upper side, and is formed in a substantially circular shape when viewed from the upper side. A heating portion 16 for heating the inner pot 30 is provided on the lower side of the inner pot accommodating portion 14. The heating unit 16 is composed of an induction coil, and the induction coil is wound in a substantially spiral shape on the lower side of the inner pot accommodating portion 14.

另外,在加熱部16的下側設有電源部18,通過電源部18,對加熱部16(感應線圈)附加高頻電流。由此,通過對加熱部16(感應線圈)附加高頻電流,在後述的內鍋30內產生渦電流,通過內鍋30內的電阻,內鍋30開始發熱。另外,在內鍋收納部14的中央部的下側設有溫度傳感器20。該溫度傳感器20作為測定內鍋30的底部溫度的傳感器而構成。進而,在電飯煲主體12的上部設有電連接有電源部18及溫度傳感器20的控制部22。而且,控制部22基於來自溫度傳感器20的輸出信號,控制電源部18。Further, a power supply unit 18 is provided on the lower side of the heating unit 16, and a high-frequency current is applied to the heating unit 16 (induction coil) via the power supply unit 18. As a result, a high-frequency current is applied to the heating unit 16 (induction coil), an eddy current is generated in the inner pot 30 to be described later, and the inner pot 30 starts to generate heat by the electric resistance in the inner pot 30. Further, a temperature sensor 20 is provided below the central portion of the inner pot accommodating portion 14. The temperature sensor 20 is configured as a sensor that measures the temperature of the bottom of the inner pot 30. Further, a control unit 22 to which the power supply unit 18 and the temperature sensor 20 are electrically connected is provided in an upper portion of the rice cooker main body 12. Further, the control unit 22 controls the power supply unit 18 based on the output signal from the temperature sensor 20.

<關於蓋部24><About the cover 24>

蓋部24通過鉸鏈機構26,可轉動地與電飯煲主體12的上部連結,覆蓋內鍋收納部14的開口部。而且,構成為通過從該狀態開始使蓋部24轉動,來開閉內鍋收納部14的開口部,從而可將後述的內鍋30收納於內鍋收納部14內。The lid portion 24 is rotatably coupled to the upper portion of the rice cooker main body 12 by the hinge mechanism 26, and covers the opening portion of the inner pot storage portion 14. In addition, the opening portion of the inner pot accommodating portion 14 is opened and closed by rotating the lid portion 24 from this state, and the inner pot 30, which will be described later, can be housed in the inner pot accommodating portion 14.

(關於內鍋30)(About inner pot 30)

如第1圖~第3圖所示,內鍋30形成為向上側敞開的大致有底圓筒狀,並且呈現在內部具有密閉空間36的雙層壁構造。具體地說,內鍋30由構成內鍋30的內側部分的內側容器32和構成內鍋30的外側部分的外側容器34構成。另外,在內鍋30的密閉空間36內注入有工作液40。進而,內鍋30具備:連結內側容器32及外側容器34的連結銷42(廣義地說,是作為“連結部”而掌握的要素)、覆蓋內鍋30的形成於開口部的凸緣的罩50。下面,對內鍋30的各結構進行說明。As shown in FIGS. 1 to 3, the inner pot 30 is formed in a substantially bottomed cylindrical shape that is open to the upper side, and has a double wall structure having a sealed space 36 therein. Specifically, the inner pot 30 is composed of an inner container 32 constituting an inner portion of the inner pot 30 and an outer container 34 constituting an outer portion of the inner pot 30. Further, a working fluid 40 is injected into the sealed space 36 of the inner pot 30. Further, the inner pot 30 includes a coupling pin 42 that connects the inner container 32 and the outer container 34 (in a broad sense, an element that is grasped as a "connection portion"), and a cover that covers the flange of the inner pot 30 formed in the opening portion. 50. Next, each structure of the inner pot 30 will be described.

<關於內側容器32><About the inner container 32>

內側容器32由磁性體(在本實施方式中,作為一例,為不銹鋼)構成,形成為向上側敞開的大致有底圓筒狀。具體地說,內側容器32由構成內側容器32的底部的內側底壁部32A、構成內側容器32的側部的圓筒狀的內側側壁部32B、連接內側底壁部32A及內側側壁部32B的內側角部32C構成。內側底壁部32A形成為以上下方向為板厚方向的大致圓板狀。另外,在縱剖視時,內側底壁部32A隨著從其中央部向徑向外側逐漸向下側傾斜若干。換言之,內側底壁部32A以內側底壁部32A的中央部向上側凸的方式彎曲若干而形成。The inner container 32 is made of a magnetic material (in the present embodiment, as an example, stainless steel), and is formed in a substantially bottomed cylindrical shape that is open to the upper side. Specifically, the inner container 32 is composed of an inner bottom wall portion 32A constituting a bottom portion of the inner container 32, a cylindrical inner side wall portion 32B constituting a side portion of the inner container 32, and an inner bottom wall portion 32A and an inner side wall portion 32B. The inner corner portion 32C is formed. The inner bottom wall portion 32A is formed in a substantially disk shape in which the upper and lower directions are in the thickness direction. Further, in the longitudinal section, the inner bottom wall portion 32A is gradually inclined downward from the central portion toward the radially outer side. In other words, the inner bottom wall portion 32A is formed by bending a portion in which the central portion of the inner bottom wall portion 32A is convex upward.

在縱剖視時,內側角部32C以向內側容器32的外側(向內側容器32的徑向外側且向下側)凸的方式彎曲為大致4分之一橢圓狀,平滑地將內側底壁部32A的外周端部和內側側壁部32B的下端部連接。具體地說,在縱剖視時,內側角部32C的半徑R設定為隨著從內側底壁部32A的外周端部向內側側壁部32B的下端部而逐漸減小。即,半徑R的與內側底壁部32A的外周端部相對應的半徑R1設定為比半徑R的與內側側壁部32B的下端部相對應的半徑R2大。In the longitudinal section, the inner corner portion 32C is curved so as to be convex toward the outer side of the inner container 32 (toward the radially outer side and the lower side of the inner container 32) to have an approximately eleventh elliptical shape, and the inner bottom wall is smoothly formed. The outer peripheral end of the portion 32A is connected to the lower end of the inner side wall portion 32B. Specifically, in the longitudinal cross-sectional view, the radius R of the inner corner portion 32C is set to gradually decrease from the outer peripheral end portion of the inner bottom wall portion 32A toward the lower end portion of the inner side wall portion 32B. That is, the radius R1 of the radius R corresponding to the outer peripheral end portion of the inner bottom wall portion 32A is set to be larger than the radius R2 of the radius R corresponding to the lower end portion of the inner side wall portion 32B.

在內側側壁部32B的開口部,形成有向內側容器32的徑向外側伸出的第一凸緣32D,第一凸緣32D遍及內側側壁部32B的周向整個一周而延伸。該第一凸緣32D通過折邊加工等而成型,彎折成向內側容器32的徑向內側敞開的大致U字形狀。具體地說,第一凸緣32D由在內側側壁部32B的開口端部向內側容器32的徑向外側彎折了大致90度而成的上凸緣部32D1、和在上凸緣部32D1的前端部向下側且向內側容器32的徑向內側回折了大致180度而成的下凸緣部32D2構成。此外,在上凸緣部32D1和下凸緣部32D2之間,配置有後述的外側容器34的第二凸緣34D,第二凸緣34D與第一凸緣32D接合。A first flange 32D that protrudes outward in the radial direction of the inner container 32 is formed in the opening of the inner side wall portion 32B, and the first flange 32D extends over the entire circumference of the inner side wall portion 32B. The first flange 32D is formed by hemming or the like, and is bent into a substantially U shape that is open to the radially inner side of the inner container 32. Specifically, the first flange 32D is formed by an upper flange portion 32D1 that is bent at an outer side in the radial direction of the inner container 32 at an opening end portion of the inner side wall portion 32B by substantially 90 degrees, and an upper flange portion 32D1. The front end portion is formed to the lower flange portion 32D2 which is folded back substantially 180 degrees toward the radially inner side of the inner container 32. Further, between the upper flange portion 32D1 and the lower flange portion 32D2, a second flange 34D of an outer container 34 to be described later is disposed, and the second flange 34D is joined to the first flange 32D.

另外,在內側容器32的內周面形成有由耐熱性的氟樹脂加工品、此處為特氟隆(註冊商標)構成的層。另一方面,對內側容器32的外側面(具體地說,構成密閉空間36的面)實施了鏡面處理。In addition, a layer made of a heat-resistant fluororesin processed product or a Teflon (registered trademark) is formed on the inner peripheral surface of the inner container 32. On the other hand, the outer surface of the inner container 32 (specifically, the surface constituting the sealed space 36) is mirror-finished.

<關於外側容器34><About outer container 34>

外側容器34與內側容器32同樣,由磁性體(在本實施方式中,作為一例,為不銹鋼)構成,形成為向上側敞開的大致有底圓筒狀。具體地說,外側容器34由構成外側容器34的底部的外側底壁部34A、構成外側容器34的側部的圓筒狀的外側側壁部34B、連接外側底壁部34A的外周端部和外側側壁部34B的下端部的外側角部34C構成。另外,在本實施方式中,內側容器32及外側容器34的板厚設定為相同,在內側容器32及外側容器34中,整體都設定為均勻(恒定)的板厚。Similarly to the inner container 32, the outer container 34 is made of a magnetic material (in this embodiment, stainless steel as an example), and is formed in a substantially bottomed cylindrical shape that is open to the upper side. Specifically, the outer container 34 is composed of an outer bottom wall portion 34A constituting the bottom portion of the outer container 34, a cylindrical outer side wall portion 34B constituting a side portion of the outer container 34, and an outer peripheral end portion and an outer side connecting the outer bottom wall portion 34A. The outer corner portion 34C of the lower end portion of the side wall portion 34B is configured. Further, in the present embodiment, the thicknesses of the inner container 32 and the outer container 34 are set to be the same, and the inner container 32 and the outer container 34 are all set to have a uniform (constant) thickness.

外側側壁部34B形成為比內側容器32的內側側壁部32B大徑的圓筒狀,從而在內側側壁部32B的徑向外側,與內側容器32配置於同軸上。另外,外側底壁部34A形成為以上下方向為板厚方向的圓形平板狀,並配置於內側容器32的內側底壁部32A的下側。即,在內鍋30收納於電飯煲10的內鍋收納部14內時,外側底壁部34A與內鍋收納部14的底面密合。此外,與內側容器32的內側底壁部32A同樣,也可以以外側底壁部34A的中央部向上側凸的方式使外側底壁部34A彎曲若干。The outer side wall portion 34B is formed in a cylindrical shape having a larger diameter than the inner side wall portion 32B of the inner container 32, and is disposed coaxially with the inner container 32 on the outer side in the radial direction of the inner side wall portion 32B. In addition, the outer bottom wall portion 34A is formed in a circular flat plate shape in the upper and lower directions in the thickness direction, and is disposed on the lower side of the inner bottom wall portion 32A of the inner container 32. In other words, when the inner pan 30 is housed in the inner pan accommodating portion 14 of the rice cooker 10, the outer bottom wall portion 34A is in close contact with the bottom surface of the inner pan accommodating portion 14. Further, similarly to the inner bottom wall portion 32A of the inner container 32, the outer bottom wall portion 34A may be curved such that the central portion of the outer bottom wall portion 34A is convex upward.

外側角部34C與內側角部32C同樣,在縱剖視時,以向外側容器34的外側(向下側且向外側容器34的徑向外側)凸的方式彎曲為大致4分之一橢圓狀,平滑地將外側底壁部34A的外周端部和外側側壁部34B的下端部連接。具體地說,在縱剖視時,內側角部32C的半徑設定為隨著從外側底壁部34A的外周端部向外側側壁部34B的下端部而逐漸減小。Similarly to the inner corner portion 32C, the outer corner portion 34C is curved in a substantially eleventh elliptical shape so as to be convex toward the outer side (downward side and outward in the radial direction of the outer container 34) of the outer container 34 in the longitudinal cross-sectional view. The outer peripheral end portion of the outer bottom wall portion 34A and the lower end portion of the outer side wall portion 34B are smoothly connected. Specifically, in the longitudinal cross-sectional view, the radius of the inner corner portion 32C is set to gradually decrease from the outer peripheral end portion of the outer bottom wall portion 34A toward the lower end portion of the outer side wall portion 34B.

在外側側壁部34B的開口端部,形成有向徑向外側伸出的第二凸緣34D。第二凸緣34D在外側側壁部34B的開口端部向外側容器34的徑向外側彎折了大致90度,遍及外側側壁部34B的周向整個一周而延伸。而且,第二凸緣34D配置於內側容器32的第一凸緣32D的上凸緣部32D1及下凸緣部32D2之間,通過第一凸緣32D來壓接,與兩者接合在一起。即,在第一凸緣32D的成型時,以第一凸緣32D的上凸緣部32D1及下凸緣部32D2對第二凸緣34D進行上下壓接的方式將第一凸緣32D彎折成型。由此,外側容器34被組裝於內側容器32,並在內側容器32和外側容器34之間形成有在縱剖視時向上側敞開的呈現大致U字形的密閉空間36。此外,第一凸緣32D的前端部通過電弧焊等,與第二凸緣34D接合。另外,除第一凸緣32D的前端部和第二凸緣34D的接合以外,也可以對第一凸緣32D和第二凸緣34D的在上下方向上重疊的重合部實施點焊、無縫焊接、激光焊接等,而將兩者接合在一起。由此,變成確保密閉空間36的氣密性的結構。進而,對外側容器34的內側面(構成密閉空間36的面)實施了鏡面處理。A second flange 34D that protrudes outward in the radial direction is formed at the opening end of the outer side wall portion 34B. The second flange 34D is bent outward in the radial direction of the outer container 34 by approximately 90 degrees at the opening end of the outer side wall portion 34B, and extends over the entire circumference of the outer side wall portion 34B in the circumferential direction. Further, the second flange 34D is disposed between the upper flange portion 32D1 and the lower flange portion 32D2 of the first flange 32D of the inner container 32, and is pressed by the first flange 32D to be joined to the both. That is, at the time of molding the first flange 32D, the first flange 32D is bent such that the upper flange portion 32D1 and the lower flange portion 32D2 of the first flange 32D press the second flange 34D up and down. forming. Thereby, the outer container 34 is assembled to the inner container 32, and a sealed space 36 having a substantially U-shape which is open upward in the longitudinal section is formed between the inner container 32 and the outer container 34. Further, the front end portion of the first flange 32D is joined to the second flange 34D by arc welding or the like. Further, in addition to the joining of the front end portion of the first flange 32D and the second flange 34D, the overlapping portions of the first flange 32D and the second flange 34D that overlap in the vertical direction may be spot-welded and seamless. Welding, laser welding, etc., and joining the two together. Thereby, it becomes a structure which ensures the airtightness of the sealing space 36. Further, the inner surface of the outer container 34 (the surface constituting the sealed space 36) is mirror-finished.

這裏,對密閉空間36進行說明。Here, the sealed space 36 will be described.

如上所述,密閉空間36在縱剖視時形成為中空的大致U字形。而且,在本實施方式中,將密閉空間36的底部36A設為比內側容器32的內側底壁部32A的內側面更靠下側的區域(空間)(參照比第1圖及第3圖的雙點劃線L1所示的位置更靠下側的區域)。由此,在本實施方式中,構成密閉空間36的底部36A的外側容器34的內側面設為密閉空間36的底面36B,底面36B由外側容器34的外側底壁部34A的內側面和外側角部34C的內側面的一部分構成。As described above, the sealed space 36 is formed in a substantially U-shape that is hollow when viewed in a longitudinal section. In the present embodiment, the bottom portion 36A of the sealed space 36 is a region (space) lower than the inner side surface of the inner bottom wall portion 32A of the inner container 32 (see FIGS. 1 and 3). The position indicated by the double-dot chain line L1 is located on the lower side of the area). Therefore, in the present embodiment, the inner side surface of the outer container 34 constituting the bottom portion 36A of the sealed space 36 is the bottom surface 36B of the sealed space 36, and the bottom surface 36B is defined by the inner side surface and the outer side angle of the outer bottom wall portion 34A of the outer container 34. A part of the inner side surface of the portion 34C is configured.

進而,如後所述,在底面36B上儲存有工作液40,當對加熱部16(感應線圈)附加高頻電流時,磁性體即外側底壁部34A就開始發熱,工作液40被加熱。Further, as will be described later, the working fluid 40 is stored on the bottom surface 36B, and when a high-frequency current is applied to the heating portion 16 (induction coil), the outer bottom wall portion 34A of the magnetic body starts to generate heat, and the working fluid 40 is heated.

另外,在密閉空間36內,密閉空間36的底部36A的高度尺寸H(內側底壁部32A和外側底壁部34A之間的上下尺寸,參照第3圖)設定為密閉空間36的側部36C的寬度尺寸W(內側側壁部32B和外側側壁部34B之間的內鍋30的徑向尺寸,參照第3圖)以上,且設定為2mm以上。在本實施方式中,底部36A的高度尺寸H設定為4mm,側部36C的寬度尺寸W設定為2mm。另外,當考慮內鍋30的大型化及內鍋30的作為鍋的實用水平時,優選將底部36A的高度尺寸H設定為10mm以下。此外,因為內側底壁部32A如上所述以其中央部向上側凸的方式彎曲若干,所以高度尺寸H在內鍋30的徑向上會發生變化。因此,在本實施方式中,將高度尺寸H設為內側底壁部32A和外側底壁部34A之間的上下尺寸的最小值。另外,在附圖中,為方便起見,誇張圖示了密閉空間36的側部36C的寬度。In the sealed space 36, the height H of the bottom portion 36A of the sealed space 36 (the upper and lower dimensions between the inner bottom wall portion 32A and the outer bottom wall portion 34A, see FIG. 3) is set as the side portion 36C of the sealed space 36. The width dimension W (the radial dimension of the inner pot 30 between the inner side wall portion 32B and the outer side wall portion 34B, see FIG. 3) is equal to or greater than 2 mm. In the present embodiment, the height dimension H of the bottom portion 36A is set to 4 mm, and the width dimension W of the side portion 36C is set to 2 mm. Moreover, when considering the enlargement of the inner pot 30 and the practical level of the inner pot 30 as a pot, it is preferable to set the height dimension H of the bottom part 36A to 10 mm or less. Further, since the inner bottom wall portion 32A is curved so as to be convex toward the upper side as described above, the height dimension H changes in the radial direction of the inner pot 30. Therefore, in the present embodiment, the height dimension H is the minimum value of the vertical dimension between the inner bottom wall portion 32A and the outer bottom wall portion 34A. In addition, in the drawings, the width of the side portion 36C of the sealed space 36 is exaggerated for convenience.

返回到外側容器34的說明中,在外側容器34的外側側壁部34B的上側部分且在第二凸緣34D的下側的位置形成有圓形狀的貫通孔34E。另外,在外側容器34的外側側壁部34B且在對應於貫通孔34E的位置,設有後述的向密閉空間36注入工作液40用及密閉空間36的抽真空用的管38。管38與貫通孔34E配置於同軸上,管38的基端部通過電弧焊等,與外側側壁部34B接合在一起。由此,通過從外側側壁部34B向內鍋30的徑向外側突出的管38,密閉空間36內和內鍋30的外部連通起來。In the description of returning to the outer container 34, a circular through hole 34E is formed at an upper portion of the outer side wall portion 34B of the outer container 34 and at a position below the second flange 34D. In the outer side wall portion 34B of the outer container 34 and at a position corresponding to the through hole 34E, a tube 38 for evacuating the working fluid 40 and the sealed space 36 into the sealed space 36 to be described later is provided. The tube 38 and the through hole 34E are disposed coaxially, and the base end portion of the tube 38 is joined to the outer side wall portion 34B by arc welding or the like. Thereby, the inside of the sealed space 36 communicates with the outside of the inner pot 30 by the tube 38 which protrudes outward in the radial direction of the inner pot 30 from the outer side wall part 34B.

而且,在本實施方式中,從管38向密閉空間36的內部注入工作液40。另外,在向密閉空間36內注入了工作液40以後,在管38安裝真空泵(圖示省略),通過真空泵,將密閉空間36內的空氣排出,密閉空間36內變成維持在小於0.1atm的負壓(更優選為0.01atm以下的負壓)或真空的設定。此外,用於注入工作液40的管和用於真空排氣的管不需要通用,也可以分別單獨地裝設。Further, in the present embodiment, the working fluid 40 is injected from the tube 38 into the sealed space 36. In addition, after the working fluid 40 is injected into the sealed space 36, a vacuum pump (not shown) is attached to the tube 38, and the air in the sealed space 36 is discharged by the vacuum pump, and the inside of the sealed space 36 is maintained at a negative temperature of less than 0.1 atm. The pressure (more preferably a negative pressure of 0.01 atm or less) or a vacuum setting. Further, the tube for injecting the working fluid 40 and the tube for vacuum evacuation are not required to be common, and may be separately provided.

在管38的前端部形成有鉚接部38A,通過鉚接部38A,來封堵管38的前端部。具體地說,一邊利用真空泵將密閉空間36內的空氣排出,一邊對管38的前端部進行鉚接加工,通過將鉚接加工後的部分切斷,鉚接部38A得以成型。另外,鉚接部38A被上下壓扁,形成為以上下方向為板厚方向的大致板狀。進而,鉚接部38A的前端部通過電弧焊等而密封。由此,確保了密閉空間36的氣密性。A caulking portion 38A is formed at the front end portion of the tube 38, and the front end portion of the tube 38 is sealed by the caulking portion 38A. Specifically, while the air in the sealed space 36 is discharged by the vacuum pump, the front end portion of the tube 38 is swaged, and the portion after the swaging process is cut, whereby the caulking portion 38A is molded. Further, the caulking portion 38A is flattened up and down, and is formed in a substantially plate shape in which the upper and lower directions are in the thickness direction. Further, the front end portion of the caulking portion 38A is sealed by arc welding or the like. Thereby, the airtightness of the sealed space 36 is ensured.

<關於工作液40><About working fluid 40>

在本實施方式中,使用水作為工作液40。而且,工作液40被從上述的管38注入到密閉空間36內,並儲存在密閉空間36的底部36A內。另外,密閉空間36的工作液40相對於底部36A的體積比率設定為4vol%~80vol%。即,在工作液40的儲存狀態下,密閉空間36的底部36A整體都不通過工作液40而浸水,而是在密閉空間36的底部36A的上部且在工作液40和內側底壁部32A之間形成有間隙。更詳細地說,在本實施方式中,以工作液40不覆蓋密閉空間36的底部36A的底面36B整體的方式設定工作液40的密閉空間36內的量。由此,在工作液40配置於密閉空間36的底面36B上的狀態下,水滴狀的多個工作液40分散配置在底面36B上。此外,在本實施方式中,如上所述,將密閉空間36的工作液40相對於底部36A的體積比率設定為4vol%~80vol%,但優選將上述體積比率設定為5vol%~20vol%,進一步優選設定為7vol%~15vol%,特別優選設定為8vol%~12vol%。In the present embodiment, water is used as the working fluid 40. Further, the working fluid 40 is injected into the sealed space 36 from the above-described tube 38, and stored in the bottom portion 36A of the sealed space 36. Further, the volume ratio of the working fluid 40 to the bottom portion 36A in the sealed space 36 is set to 4 vol% to 80 vol%. That is, in the storage state of the working fluid 40, the entire bottom portion 36A of the sealed space 36 is not immersed in water by the working fluid 40, but is in the upper portion of the bottom portion 36A of the sealed space 36 and in the working fluid 40 and the inner bottom wall portion 32A. There is a gap formed between them. More specifically, in the present embodiment, the amount of the working fluid 40 in the sealed space 36 is set such that the working fluid 40 does not cover the entire bottom surface 36B of the bottom portion 36A of the sealed space 36. Thereby, in a state in which the working fluid 40 is disposed on the bottom surface 36B of the sealed space 36, a plurality of water-like working fluids 40 are dispersedly disposed on the bottom surface 36B. Further, in the present embodiment, as described above, the volume ratio of the working fluid 40 in the sealed space 36 to the bottom portion 36A is set to 4 vol% to 80 vol%, but it is preferable to set the volume ratio to 5 vol% to 20 vol%. It is preferably set to 7 vol% to 15 vol%, and particularly preferably set to 8 vol% to 12 vol%.

<關於連結銷42><About the joint pin 42>

連結銷42由磁性體(在本實施方式中,作為一例,為不銹鋼)構成。該連結銷42形成為以上下方向為軸向的大致圓柱狀,將內鍋30的內側底壁部32A和外側底壁部34A連結在一起。具體地說,連結銷42由連結內側底壁部32A的中央部和外側底壁部34A的中央部的中心銷44、和連結內側底壁部32A的外周部和外側底壁部34A的外周部的多個(在本實施方式中,4根)外周銷46構成。而且,外周銷46每隔等間隔(每隔90度)地分開配置在內鍋30的周向上。The connecting pin 42 is composed of a magnetic body (in the present embodiment, stainless steel as an example). The connecting pin 42 is formed in a substantially columnar shape in which the upper and lower directions are axial, and the inner bottom wall portion 32A and the outer bottom wall portion 34A of the inner pot 30 are coupled together. Specifically, the coupling pin 42 includes a center pin 44 that connects the center portion of the inner bottom wall portion 32A and the center portion of the outer bottom wall portion 34A, and an outer peripheral portion that connects the inner bottom wall portion 32A and the outer peripheral portion of the outer bottom wall portion 34A. A plurality of (four in the present embodiment) outer peripheral pins 46 are formed. Further, the outer peripheral pins 46 are disposed at equal intervals (every 90 degrees) in the circumferential direction of the inner pot 30.

此外,在本實施方式中,連結銷42的上端部通過電弧焊等,與內側容器32的內側底壁部32A接合在一起。另一方面,連結銷42的下端部在組裝了內側容器32和外側容器34以後,從外側容器34的外側,通過激光焊接等,與外側容器34的外側底壁部34A接合在一起。另外,在本實施方式中,連結銷42由中心銷44和外周銷46構成,但在連結銷42中,也可以省略外周銷46,僅將連結銷42設為中心銷44。Further, in the present embodiment, the upper end portion of the coupling pin 42 is joined to the inner bottom wall portion 32A of the inner container 32 by arc welding or the like. On the other hand, after the inner container 32 and the outer container 34 are assembled, the lower end portion of the coupling pin 42 is joined to the outer bottom wall portion 34A of the outer container 34 by laser welding or the like from the outside of the outer container 34. Further, in the present embodiment, the coupling pin 42 is composed of the center pin 44 and the outer circumferential pin 46. However, in the coupling pin 42, the outer circumferential pin 46 may be omitted, and only the coupling pin 42 may be the center pin 44.

<關於罩50><About cover 50>

如第1圖、第3圖、及第4圖所示,罩50形成為圓形環狀,從內鍋30的徑向外側覆蓋內側容器32的第一凸緣32D及管38。罩50由具有耐熱性的樹脂(在本實施方式中,作為一例,為耐熱ABS)構成。另外,在俯視時,罩50被一分為二,由一對罩部件52構成。一對罩部件52在俯視時呈現向內鍋30的中央側敞開的半圓狀(大致C字形狀),並且在從周向(長度方向)看到的剖視時,形成為向內鍋30的徑向內側敞開的凹狀。具體地說,罩部件52由構成罩部件52的外周部的外周壁52A、從外周壁52A的上端部向罩部件52的徑向內側伸出的上壁52B、從外周壁52A的下端部向罩部件52的徑向內側伸出的下壁52C構成。另外,在上壁52B和下壁52C之間形成有從外周壁52A的上下方向中間部向徑向內側伸出的上下一對中間壁52D,中間壁52D配置為與上壁52B及下壁52C平行,沿罩部件52的周向延伸。As shown in FIG. 1, FIG. 3, and FIG. 4, the cover 50 is formed in a circular ring shape, and covers the first flange 32D of the inner container 32 and the tube 38 from the radially outer side of the inner pot 30. The cover 50 is composed of a heat-resistant resin (in the present embodiment, as an example, a heat-resistant ABS). Further, the cover 50 is divided into two in a plan view and is constituted by a pair of cover members 52. The pair of cover members 52 have a semicircular shape (a substantially C-shape) that is open to the center side of the inner pot 30 in plan view, and is formed to the inner pot 30 when viewed from the circumferential direction (longitudinal direction). A concave shape that is open on the radially inner side. Specifically, the cover member 52 is formed by the outer peripheral wall 52A constituting the outer peripheral portion of the cover member 52, and the upper wall 52B projecting from the upper end portion of the outer peripheral wall 52A toward the radially inner side of the cover member 52, from the lower end portion of the outer peripheral wall 52A. The lower wall 52C of the cover member 52 projecting radially inward is formed. Further, between the upper wall 52B and the lower wall 52C, a pair of upper and lower intermediate walls 52D projecting radially inward from the intermediate portion in the vertical direction of the outer peripheral wall 52A are formed, and the intermediate wall 52D is disposed to be opposed to the upper wall 52B and the lower wall 52C. Parallel, extending in the circumferential direction of the cover member 52.

罩部件52的內部的上側部分(上側的中間壁52D和上壁52B之間的空間)設為第一收納部52E。而且,在第一收納部52E內嵌入有內鍋30的第一凸緣32D,從而罩部件52固定於內鍋30。換言之,通過罩部件52,從徑向外側覆蓋內鍋30的第一凸緣32D(包含第二凸緣34D)。另外,罩部件52的內部的下側部分(下側的中間壁52D和下壁52C之間的空間)設為第二收納部52F。而且,在第二收納部52F內收納有內鍋30的管38。由此,管38通過罩部件52,被從內鍋30的徑向外側覆蓋。The upper side portion of the inside of the cover member 52 (the space between the upper intermediate wall 52D and the upper wall 52B) is referred to as a first housing portion 52E. Further, the first flange 32D of the inner pot 30 is fitted into the first housing portion 52E, and the cover member 52 is fixed to the inner pot 30. In other words, the first flange 32D (including the second flange 34D) of the inner pot 30 is covered from the radially outer side by the cover member 52. Further, the lower portion of the inside of the cover member 52 (the space between the lower intermediate wall 52D and the lower wall 52C) is referred to as a second housing portion 52F. Further, the tube 38 of the inner pot 30 is housed in the second housing portion 52F. Thereby, the tube 38 is covered from the radially outer side of the inner pot 30 by the cover member 52.

另外,在一個罩部件52的外周壁52A且在長度方向兩端部,形成有向徑向外側突出的扣52G(參照第4圖)。進而,在另一個罩部件52的外周壁52A且在長度方向兩端部,形成有向一個罩部件52側伸出的卡合片52H(參照第4圖),在卡合片52H的前端側部分,形成有與扣52G卡合的卡合孔52J(參照第4圖)。由此,在一對罩部件52卡合後的狀態下,罩50從內鍋30的徑向外側覆蓋第一凸緣32D及管38。In addition, a buckle 52G that protrudes outward in the radial direction is formed on the outer peripheral wall 52A of one cover member 52 and at both end portions in the longitudinal direction (see FIG. 4). Further, in the outer peripheral wall 52A of the other cover member 52, the engaging pieces 52H projecting toward the one cover member 52 side are formed at both end portions in the longitudinal direction (see FIG. 4), and the distal end side of the engaging piece 52H is formed. In part, an engaging hole 52J that engages with the buckle 52G is formed (see FIG. 4). Thereby, the cover 50 covers the first flange 32D and the tube 38 from the radially outer side of the inner pot 30 in a state in which the pair of cover members 52 are engaged.

此外,作為罩部件52向內鍋30的固定,也可以省略上述的扣52G及卡合片52H,而僅采用將第一凸緣32D嵌入第一收納部52E內的結構。另外,也可以利用螺釘或鉚釘等將罩部件52聯接固定於第一凸緣32D,從而將罩部件52固定於內鍋30。進而,罩50不局限於一分為二,也可以采用 將罩50分割為3片以上的結構。Further, as the cover member 52 is fixed to the inner pot 30, the above-described buckle 52G and the engagement piece 52H may be omitted, and only the first flange 32D may be fitted into the first housing portion 52E. Further, the cover member 52 may be coupled to the first flange 32D by screws, rivets or the like to fix the cover member 52 to the inner pot 30. Further, the cover 50 is not limited to being divided into two, and a configuration in which the cover 50 is divided into three or more pieces may be employed.

(作用及效果)(action and effect)

接著,對本實施方式的作用及效果進行說明。Next, the action and effect of the present embodiment will be described.

在使用上述那樣構成的內鍋30及電飯煲10進行煮飯時,將內鍋30收納在電飯煲10的內鍋收納部14內,通過電飯煲10的加熱部16,將內鍋30的底部加熱。具體地說,通過對加熱部16(感應線圈)附加高頻電流,在內鍋30內產生渦電流。由此,內鍋30的底部開始發熱,密閉空間36內的工作液40被加熱。When the inner pot 30 and the rice cooker 10 configured as described above are used for cooking, the inner pot 30 is housed in the inner pot accommodating portion 14 of the rice cooker 10, and the bottom portion of the inner pot 30 is heated by the heating portion 16 of the rice cooker 10. Specifically, an eddy current is generated in the inner pot 30 by applying a high-frequency current to the heating unit 16 (induction coil). Thereby, the bottom of the inner pot 30 starts to generate heat, and the working fluid 40 in the sealed space 36 is heated.

當加熱後的工作液40的溫度達到沸點時,工作液40沸騰,工作液40的一部分進行氣化。氣化後的蒸氣瞬時擴散到密閉空間36內,將內鍋30的內側側壁部32B加熱。然後,加熱了內鍋30的內側側壁部32B後的蒸氣開始冷凝,從氣體變成液體作為工作液40。成為液體後的工作液40通過自重而返回到密閉空間36的底部36A。而且,在工作液40中,通過重複上述相變化的周期,內鍋30的內側側壁部32B被加熱,且將內鍋30內的烹調物(飯)加熱。由於工作液40的蒸氣使包圍密閉空間36的內側容器32和外側容器34的整個壁面都達到同一溫度,因此內側容器32的內側底壁部32A、內側側壁部32B、內側角部32C被無時滯且大致均勻地加熱,同時內側容器32的溫度上升。When the temperature of the heated working fluid 40 reaches the boiling point, the working fluid 40 boils and a part of the working fluid 40 is vaporized. The vaporized vapor is instantaneously diffused into the sealed space 36, and the inner side wall portion 32B of the inner pot 30 is heated. Then, the vapor after the inner side wall portion 32B of the inner pot 30 is heated starts to condense, and the liquid is changed from the gas to the liquid as the working liquid 40. The working fluid 40 that has become a liquid returns to the bottom portion 36A of the sealed space 36 by its own weight. Further, in the working fluid 40, the inner side wall portion 32B of the inner pot 30 is heated by repeating the cycle of the above-described phase change, and the cooking material (rice) in the inner pot 30 is heated. Since the vapor of the working fluid 40 brings the entire wall surfaces of the inner container 32 and the outer container 34 surrounding the sealed space 36 to the same temperature, the inner bottom wall portion 32A, the inner side wall portion 32B, and the inner corner portion 32C of the inner container 32 are time-outless. The heat is stagnation and is substantially uniformly heated while the temperature of the inner container 32 rises.

第6圖是用曲線圖來表示使用本實施方式的內鍋30進行煮飯時的、內鍋30及飯的溫度數據之一例的圖。在該曲線圖中,橫軸表示從煮飯起始計起的時間(分鐘),縱軸表示溫度(℃)。另外,第6圖所示的實線是內鍋30的內側側壁部32B的上部的測定數據,虛線是內鍋30的內側底壁部32A的中央部的測定數據,點劃線是內鍋30內的飯的上部的測定數據,雙點劃線是內鍋30內的飯的下部的測定數據。Fig. 6 is a view showing an example of temperature data of the inner pot 30 and the rice when the inner pot 30 of the present embodiment is used for cooking. In the graph, the horizontal axis represents the time (minutes) from the start of cooking, and the vertical axis represents temperature (°C). In addition, the solid line shown in FIG. 6 is measurement data of the upper portion of the inner side wall portion 32B of the inner pot 30, and the broken line is measurement data of the central portion of the inner bottom wall portion 32A of the inner pot 30, and the dotted line is the inner pot 30. The measurement data of the upper portion of the rice inside, and the two-dot chain line are measurement data of the lower portion of the rice in the inner pot 30.

而且,如該圖所示,可知在從煮飯起始至在大致20分鐘以後開始的“煮飯區間”的起始時,內鍋30的內側側壁部32B的溫度與內鍋30的內側底壁部32A的溫度同等地上升到100℃。另外可知,即使在內鍋30的溫度達到了100℃以後的“煮飯區間”及“蒸飯區間”內,在內側側壁部32B和內側底壁部32A之間的溫度差忽略不計的狀態下,內鍋30也被加熱。Further, as shown in the figure, it is understood that the temperature of the inner side wall portion 32B of the inner pot 30 and the inner bottom portion of the inner pot 30 at the start of the "cooking section" starting from the start of cooking to approximately 20 minutes later. The temperature of the wall portion 32A was equally raised to 100 °C. In the "cooking section" and the "steamed rice section" after the temperature of the inner pot 30 has reached 100 ° C, the temperature difference between the inner side wall portion 32B and the inner bottom wall portion 32A is negligible. The inner pot 30 is also heated.

進而可知,在“煮飯區間”的起始時,飯的上部及下部的溫度隨著內鍋30的內側側壁部32B及內側底壁部32A的溫度上升而上升。換言之,可知能夠減小內鍋30的內側側壁部32B及內側底壁部32A和飯的上部及下部之間的溫度差,從而能夠煮飯。Further, it is understood that the temperature of the upper portion and the lower portion of the rice rises as the temperature of the inner side wall portion 32B and the inner bottom wall portion 32A of the inner pot 30 rises at the beginning of the "cooking section". In other words, it can be seen that the temperature difference between the inner side wall portion 32B and the inner bottom wall portion 32A of the inner pot 30 and the upper and lower portions of the rice can be reduced, and rice can be cooked.

另外,在本實施方式中,判明即使在省略了煮飯中的“浸泡區間”而從煮飯起始立即作為“煮飯區間”進行煮飯的所謂快速煮飯中,也能夠在短時間內進行煮飯。即,在通常進行快速煮飯的情況下,為了防止快速煮飯中的浸泡米的水(以下,稱為“浸泡水”)的過度蒸發,在煮飯過程中,進行將對電飯煲10的加熱部16(感應線圈)的輸出相對於煮飯起始的輸出調低的控制。因此,在煮飯過程中,將上述輸出暫時調低,從而快速煮飯的直到煮飯結束為止的時間也相應地延長。In addition, in the present embodiment, it has been found that even in the so-called quick cooking in which the "soaking section" in the cooking rice is omitted and the rice cooking section is used as the "cooking section", the cooking can be performed in a short time. Cook rice. That is, in the case where the quick cooking is usually performed, in order to prevent excessive evaporation of water (hereinafter referred to as "soaking water") of the rice soaked in the fast cooking, heating of the rice cooker 10 is performed during the rice cooking process. The output of the portion 16 (inductive coil) is controlled relative to the output of the rice cooking start. Therefore, during the cooking process, the above output is temporarily lowered, so that the time until the end of the cooking is rapidly extended.

與此相對,已判明在使用本實施方式的內鍋30進行的快速煮飯的情況下,能夠抑制快速煮飯中的浸泡水的過度蒸發。因此,已確認即使將對電飯煲10的加熱部16(感應線圈)的輸出從煮飯起始到結束都設定為恒定的輸出而將內鍋30加熱,也會煮出不比通過通常的煮飯而煮出來的飯遜色的飯來。由此,通過將對電飯煲10的加熱部16(感應線圈)的輸出從煮飯起始到結束都設定為恒定的輸出,能夠進一步縮短快速煮飯的時間。On the other hand, in the case of the rapid cooking using the inner pot 30 of the present embodiment, it has been found that excessive evaporation of the soaking water during rapid cooking can be suppressed. Therefore, it has been confirmed that even if the output of the heating unit 16 (induction coil) of the rice cooker 10 is set to a constant output from the start to the end of cooking, and the inner pot 30 is heated, it is cooked no more than usual cooking. The rice that was cooked was inferior to the rice. Thus, by setting the output of the heating unit 16 (induction coil) of the rice cooker 10 to a constant output from the start to the end of cooking, the time for rapid cooking can be further shortened.

這裏,在本實施方式的內鍋30中,密閉空間36的工作液40相對於底部36A的體積比率設定為4vol%~80vol%。具體地說,多個工作液40以不覆蓋密閉空間36的底面36B整體的方式被水滴狀地注入在密閉空間36的底面36B上。由此,能夠高效地將內側容器32的內側側壁部32B加熱。Here, in the inner pot 30 of the present embodiment, the volume ratio of the working fluid 40 in the sealed space 36 to the bottom portion 36A is set to 4 vol% to 80 vol%. Specifically, the plurality of working fluids 40 are injected into the bottom surface 36B of the sealed space 36 in a drop shape so as not to cover the entire bottom surface 36B of the sealed space 36. Thereby, the inner side wall portion 32B of the inner container 32 can be efficiently heated.

下面,利用第7圖所示的曲線圖對該點進行說明。第7圖所示的曲線圖表示內鍋30的煮飯時的、在使工作液40相對於底部36A的體積比率發生了變化時測定內鍋30的溫度所得的數據之一例。而且,在第7圖的各曲線圖中,橫軸表示從煮飯起始計起的時間(分鐘),縱軸表示溫度(℃)。另外,各曲線圖的實線是內鍋30的內側側壁部32B的上部的測定數據,虛線是內側側壁部32B的下部的測定數據,點劃線是內鍋30的內側底壁部32A的中央部的測定數據,雙點劃線是內側底壁部32A的外周部的測定數據。進而,在第7圖(A)中,將上述體積比率設定為3vol%,在第7圖(B)中,將上述體積比率設定為10vol%,在第7圖(C)中,將上述體積比率設定為大於80vol%的值(大致為85vol%)。Hereinafter, this point will be described using the graph shown in Fig. 7. The graph shown in Fig. 7 shows an example of data obtained by measuring the temperature of the inner pot 30 when the volume ratio of the working fluid 40 to the bottom portion 36A is changed during cooking of the inner pot 30. Further, in each graph of Fig. 7, the horizontal axis represents the time (minutes) from the start of rice cooking, and the vertical axis represents the temperature (°C). Further, the solid line of each graph is the measurement data of the upper portion of the inner side wall portion 32B of the inner pot 30, the broken line is the measurement data of the lower portion of the inner side wall portion 32B, and the dashed line is the center of the inner bottom wall portion 32A of the inner pot 30. The measurement data of the portion, the two-dot chain line, is measurement data of the outer peripheral portion of the inner bottom wall portion 32A. Further, in Fig. 7(A), the volume ratio is set to 3 vol%, and in Fig. 7(B), the volume ratio is set to 10 vol%, and in Fig. 7(C), the volume is set. The ratio was set to a value greater than 80 vol% (approximately 85 vol%).

如第7圖(A)所示,已判明當將上述體積比率設定為3vol%以下時,雖然發生了工作液40的相變周期(從液體開始進行氣化而變成蒸氣,從蒸氣開始冷凝而恢復成液體的循環周期),但內鍋30整體的溫度上升的行為都不穩定。As shown in Fig. 7(A), it has been found that when the volume ratio is set to 3 vol% or less, the phase change cycle of the working fluid 40 occurs (the vaporization starts from the liquid and becomes vapor, and the vapor starts to condense. The circulation period of the liquid is restored, but the behavior of the temperature rise of the entire inner pot 30 is unstable.

另外,如第7圖(C)所示,已判明當上述體積比率超過80vol%時,蒸氣的相變周期效率就會降低,內鍋30的內側底壁部32A與內側側壁部32B之間的溫度差增大,得不到內鍋30整體的溫度均勻性。Further, as shown in Fig. 7(C), it has been found that when the volume ratio exceeds 80 vol%, the phase change cycle efficiency of the vapor is lowered, and between the inner bottom wall portion 32A and the inner side wall portion 32B of the inner pot 30. The temperature difference is increased, and the temperature uniformity of the entire inner pot 30 is not obtained.

另一方面,如第7圖(B)所示,已判明當將上述體積比率設定為10vol%時,內鍋30整體就會在良好地進行蒸氣的相變周期,且抑制了內鍋30的內側底壁部32A及內側側壁部32B之間的溫度差的狀態下進行溫度上升,且內鍋30整體都被大致均勻地加熱。On the other hand, as shown in Fig. 7(B), it has been found that when the volume ratio is set to 10 vol%, the entire inner pot 30 is well subjected to the vapor phase change cycle, and the inner pot 30 is suppressed. The temperature rises in a state where the temperature difference between the inner bottom wall portion 32A and the inner side wall portion 32B is increased, and the entire inner pot 30 is heated substantially uniformly.

由以上可知,通過將密閉空間36的工作液40相對於底部36A的體積比率設定為4vol%~80vol%,能夠高效地將內側容器32的內側側壁部32B加熱,且能夠大致均勻地將內鍋30整體加熱。As described above, by setting the volume ratio of the working fluid 40 in the sealed space 36 to the bottom portion 36A to 4 vol% to 80 vol%, the inner side wall portion 32B of the inner container 32 can be efficiently heated, and the inner pot can be substantially uniformly 30 overall heating.

另外,在內鍋30中,密閉空間36的底部36A的高度尺寸H設定為側部36C的寬度尺寸W以上,且設定為2mm以上。因此,能夠更高效地將內側容器32的內側側壁部32B加熱。In the inner pot 30, the height H of the bottom portion 36A of the sealed space 36 is set to be equal to or larger than the width dimension W of the side portion 36C, and is set to 2 mm or more. Therefore, the inner side wall portion 32B of the inner container 32 can be heated more efficiently.

即,已判明當將高度尺寸H設定為小於寬度尺寸W且小於2mm時,在工作液40的相變周期中,冷凝而恢復成液體的工作液40的、從密閉空間36的側部36C向底部36A返回的返回效率就會降低,對內鍋30均勻加熱的效果就會下降。因此,如上所述,通過將高度尺寸H設定為寬度尺寸W以上且設定為2mm以上,能夠抑制冷凝而恢復成液體的工作液40的、從密閉空間36的側部36C向底部36A返回的返回效率的降低,並能夠提高對內鍋30均勻加熱的效果。由以上可知,能夠更高效地將內側容器32的內側側壁部32B加熱。In other words, it has been found that when the height dimension H is set to be smaller than the width dimension W and smaller than 2 mm, the working fluid 40 which is condensed and returned to the liquid during the phase change cycle of the working fluid 40 is directed from the side portion 36C of the sealed space 36. The return efficiency of the bottom 36A return is lowered, and the effect of uniformly heating the inner pot 30 is lowered. Therefore, as described above, by setting the height dimension H to the width dimension W or more and setting it to 2 mm or more, it is possible to suppress the return of the working fluid 40 which has been condensed and returned to the liquid, from the side portion 36C of the sealed space 36 to the bottom portion 36A. The efficiency is lowered and the effect of uniform heating of the inner pot 30 can be improved. As described above, the inner side wall portion 32B of the inner container 32 can be heated more efficiently.

進而,密閉空間36內會變成維持在小於0.1atm的負壓(更優選為0.01atm以下的負壓)或真空的設定。因此,能夠更高效地將內側容器32的內側側壁部32B加熱。Further, the inside of the sealed space 36 is set to maintain a negative pressure (less preferably a negative pressure of 0.01 atm or less) or a vacuum of less than 0.1 atm. Therefore, the inner side wall portion 32B of the inner container 32 can be heated more efficiently.

即,如第8圖所示,密閉空間36內產生的蒸氣沿著內鍋30的內側側壁部32B而上升(參照第8圖的箭頭)。這時,在將密閉空間36內製成了超過0.1atm的負壓的情況下,密閉空間36內的殘存空氣A(參照雙點劃線所示的部分)通過沿著內側側壁部32B而上升的蒸氣,被推向密閉空間36的上端側。即,在這種情況下,密閉空間36內的殘存空氣A成為蒸氣上升時的對蒸氣的阻力層,有阻礙蒸氣上升的傾向。而且,通過將密閉空間36內製成小於0.1atm的負壓狀態,能夠減小殘存空氣A對要上升的蒸氣的阻力,能夠使蒸氣向密閉空間36的上端側上升,從而能夠良好地通過蒸氣將內側側壁部32B加熱。另外,通過將密閉空間36內維持在0.01atm以下的負壓或真空,能夠更加良好地通過蒸氣將內側側壁部32B加熱。因此,通過將密閉空間36內設定為維持在小於0.1atm的負壓(更優選為0.01atm以下的負壓)或真空,能夠更加良好地將內側容器32的內側側壁部32B加熱。That is, as shown in Fig. 8, the vapor generated in the sealed space 36 rises along the inner side wall portion 32B of the inner pot 30 (refer to the arrow in Fig. 8). At this time, when a negative pressure of more than 0.1 atm is formed in the sealed space 36, the residual air A (refer to a portion indicated by a chain double-dashed line) in the sealed space 36 rises along the inner side wall portion 32B. The vapor is pushed to the upper end side of the sealed space 36. In other words, in this case, the residual air A in the sealed space 36 serves as a resistance layer against the vapor when the vapor rises, and tends to prevent the vapor from rising. In addition, by making the inside of the sealed space 36 into a negative pressure state of less than 0.1 atm, the resistance of the residual air A to the vapor to be raised can be reduced, and the vapor can be raised to the upper end side of the sealed space 36, so that the vapor can be favorably passed. The inner side wall portion 32B is heated. In addition, by maintaining the inside of the sealed space 36 at a negative pressure or a vacuum of 0.01 atm or less, the inner side wall portion 32B can be more preferably heated by steam. Therefore, by setting the inside of the sealed space 36 to a negative pressure (less preferably a negative pressure of 0.01 atm or less) or a vacuum of less than 0.1 atm, the inner side wall portion 32B of the inner container 32 can be heated more satisfactorily.

另外,內鍋30的內側角部32C的半徑R以隨著從內側底壁部32A的外周端部向內側側壁部32B的下端部而逐漸減小的方式設定。即,半徑R的與內側底壁部32A的外周端部相對應的半徑R1設定為比半徑R的與內側側壁部32B的下端部相對應的半徑R2大。由此,既能夠抑制內鍋30的容量(能夠煮飯的量)減小,又能夠高效地使在密閉空間36內產生的蒸氣沿著內鍋30的內側角部32C向內側側壁部32B側上升。下面,對該點進行說明。Moreover, the radius R of the inner corner portion 32C of the inner pot 30 is set to gradually decrease from the outer peripheral end portion of the inner bottom wall portion 32A toward the lower end portion of the inner side wall portion 32B. That is, the radius R1 of the radius R corresponding to the outer peripheral end portion of the inner bottom wall portion 32A is set to be larger than the radius R2 of the radius R corresponding to the lower end portion of the inner side wall portion 32B. Thereby, it is possible to reduce the capacity of the inner pot 30 (the amount of rice that can be cooked), and to efficiently cause the vapor generated in the sealed space 36 to move along the inner corner portion 32C of the inner pot 30 toward the inner side wall portion 32B side. rise. This point will be described below.

即,在不變更內鍋30的徑向的大小,且假使將內側角部32C的半徑R設為與內側底壁部32A的外周端部相對應的半徑R1並設定為恒定不變的情況下(以下,將這種情況稱為比較例),內側角部32C的下側部分就會進入比本實施方式更靠徑向內側。即,內側底壁部32A的直徑尺寸就會減小。由此,在比較例中,內鍋30的容量有減小的傾向。In other words, in the case where the radial direction of the inner pot 30 is not changed, and the radius R of the inner corner portion 32C is set to be constant and the radius R1 corresponding to the outer peripheral end portion of the inner bottom wall portion 32A is set to be constant, (Hereinafter, this case is referred to as a comparative example), and the lower portion of the inner corner portion 32C enters the radially inner side of the present embodiment. That is, the diameter of the inner bottom wall portion 32A is reduced. Thus, in the comparative example, the capacity of the inner pot 30 tends to decrease.

另外,在比較例中,在縱剖視時,與內側角部32C相切的切線相對於水平方向的傾斜角度隨著向內側容器32的徑向外側而緩慢增大。Further, in the comparative example, the inclination angle of the tangent line tangential to the inner corner portion 32C with respect to the horizontal direction gradually increases toward the radially outer side of the inner container 32 in the longitudinal section.

與此相對,在本實施方式中,內側容器32的內側角部32C的半徑R以隨著從內側底壁部32A的外周部向內側側壁部32B的下端部而逐漸減小的方式設定。因此,在縱剖視時,與內側角部32C相切的切線相對於水平方向的傾斜角度會隨著向內側容器32的徑向外側而比比較例更急劇地增大。換言之,內側角部32C以比比較例更急劇上升的方式形成。由此,與比較例相比,能夠降低對沿著內鍋30的內側角部32C而上升的蒸氣的阻力,能夠高效地使該蒸氣向內側側壁部32B側上升。On the other hand, in the present embodiment, the radius R of the inner corner portion 32C of the inner container 32 is set to gradually decrease from the outer peripheral portion of the inner bottom wall portion 32A toward the lower end portion of the inner side wall portion 32B. Therefore, in the longitudinal cross-sectional view, the inclination angle of the tangent line tangential to the inner corner portion 32C with respect to the horizontal direction increases more sharply than the comparative example in the radial outer side of the inner container 32. In other words, the inner corner portion 32C is formed to rise more sharply than the comparative example. Thus, the resistance to the vapor rising along the inner corner portion 32C of the inner pot 30 can be reduced as compared with the comparative example, and the vapor can be efficiently raised toward the inner side wall portion 32B side.

另外,在本實施方式中,能夠將內側角部32C的下端部分配置於比比較例更靠徑向外側。即,能夠使內側底壁部32A的直徑比比較例更大。由此,能夠使內鍋30的容量比比較例更大。Further, in the present embodiment, the lower end portion of the inner corner portion 32C can be disposed radially outward of the comparative example. That is, the diameter of the inner bottom wall portion 32A can be made larger than that of the comparative example. Thereby, the capacity of the inner pot 30 can be made larger than the comparative example.

由以上可知,根據本實施方式的內鍋30,既能夠抑制內鍋30的容量減小,又能夠高效地使密閉空間36內的蒸氣沿著內側容器32的內側角部32C而向內側側壁部32B側上升。As described above, according to the inner pot 30 of the present embodiment, it is possible to efficiently reduce the vapor in the sealed space 36 to the inner side wall portion along the inner corner portion 32C of the inner container 32 while reducing the capacity of the inner pot 30. The 32B side rises.

進而,對內鍋30的構成密閉空間36的面實施了鏡面處理。因此,在密閉空間36內,能夠降低在蒸氣沿著內鍋30的內側角部32C及內側側壁部32B而上升時的、這些壁面對蒸氣的阻力。由此,能夠良好地使密閉空間36的蒸氣向密閉空間36的上端側上升。其結果是,能夠高效地將內側容器32的整體加熱。Further, the surface of the inner pot 30 constituting the sealed space 36 is mirror-finished. Therefore, in the sealed space 36, the resistance against the vapor when the vapor rises along the inner corner portion 32C and the inner side wall portion 32B of the inner pot 30 can be reduced. Thereby, the vapor of the sealed space 36 can be favorably raised to the upper end side of the sealed space 36. As a result, the entire inner container 32 can be efficiently heated.

另外,能夠降低在冷凝而變成液體的工作液40下降時的、這些壁面對工作液40的阻力。由此,能夠良好地使工作液40返回到密閉空間36的底部36A。In addition, it is possible to reduce the resistance of the walls to the working fluid 40 when the working fluid 40 that has become condensed and becomes liquid is lowered. Thereby, the working fluid 40 can be satisfactorily returned to the bottom portion 36A of the sealed space 36.

另外,在內鍋30的密閉空間36內設有連結銷42,連結銷42將內鍋30的內側底壁部32A及外側底壁部34A連結在一起。而且,在內鍋30的加熱時,密閉空間36內的氣壓要上升,內側底壁部32A及外側底壁部34A要上下膨脹。這時,因為內側底壁部32A及外側底壁部34A通過連結銷42而連結,所以內側底壁部32A及外側底壁部34A通過連結銷42而以相互拉伸的方式發揮作用。由此,能夠通過連結銷42來抑制內鍋30的加熱時的、內側底壁部32A向上側的膨脹、及外側底壁部34A向下側的膨脹,並且能夠抑制內鍋30的底部的變形。Further, a coupling pin 42 is provided in the sealed space 36 of the inner pot 30, and the coupling pin 42 connects the inner bottom wall portion 32A and the outer bottom wall portion 34A of the inner pan 30 together. Further, during the heating of the inner pot 30, the air pressure in the sealed space 36 rises, and the inner bottom wall portion 32A and the outer bottom wall portion 34A are vertically expanded. At this time, since the inner bottom wall portion 32A and the outer bottom wall portion 34A are coupled by the joint pin 42, the inner bottom wall portion 32A and the outer bottom wall portion 34A function to be mutually stretched by the joint pin 42. With this, the expansion of the inner bottom wall portion 32A and the expansion of the outer bottom wall portion 34A to the lower side when the inner pan 30 is heated can be suppressed, and the deformation of the bottom portion of the inner pan 30 can be suppressed. .

進而,連結銷42由以上下方向為軸向的銷構成。因此,在密閉空間36的底部36A內,不會阻礙工作液40及成為氣體的蒸氣的流動,能夠通過連結銷42將內側底壁部32A及外側底壁部34A連結。Further, the coupling pin 42 is constituted by a pin whose upper and lower directions are the axial direction. Therefore, in the bottom portion 36A of the sealed space 36, the flow of the working fluid 40 and the vapor which is a gas is not inhibited, and the inner bottom wall portion 32A and the outer bottom wall portion 34A can be coupled by the joint pin 42.

另外,連結銷42具有中心銷44,中心銷44將內鍋30的內側底壁部32A的中央部和外側底壁部34A的中央部連結在一起。因此,能夠通過連結銷42來抑制內側底壁部32A及外側底壁部34A的各自的中央部的上下位移。由此,在膨脹時,能夠對內側底壁部32A及外側底壁部34A抑制位移量最大的部位的位移。因此,能夠有效地抑制內側底壁部32A及外側底壁部34A的膨脹。Further, the coupling pin 42 has a center pin 44 that connects the central portion of the inner bottom wall portion 32A of the inner pot 30 and the central portion of the outer bottom wall portion 34A. Therefore, the vertical displacement of the central portion of each of the inner bottom wall portion 32A and the outer bottom wall portion 34A can be suppressed by the joint pin 42. Thereby, at the time of expansion, the displacement of the portion where the displacement amount is the largest can be suppressed to the inner bottom wall portion 32A and the outer bottom wall portion 34A. Therefore, the expansion of the inner bottom wall portion 32A and the outer bottom wall portion 34A can be effectively suppressed.

進而,在內鍋30的外側側壁部34B設有向內鍋30的徑向外側突出的管38。而且,在形成管38的鉚接部38A以前,內鍋30的密閉空間36內和內鍋30的外部通過管38而連通。由此,利用管38,能夠容易將工作液40注入到密閉空間36內。另外,通過在管38安裝真空泵,能夠從管38中將密閉空間36內的空氣排出,從而將密閉空間36內製成負壓或真空狀態。因此,能夠提高內鍋30的製作時的作業性。Further, a tube 38 that protrudes outward in the radial direction of the inner pot 30 is provided on the outer side wall portion 34B of the inner pot 30. Further, before the caulking portion 38A of the tube 38 is formed, the inside of the sealed space 36 of the inner pot 30 and the outside of the inner pot 30 communicate with each other through the tube 38. Thereby, the working fluid 40 can be easily injected into the sealed space 36 by the tube 38. Further, by installing a vacuum pump in the tube 38, the air in the sealed space 36 can be discharged from the tube 38, and the inside of the sealed space 36 can be made into a negative pressure or a vacuum state. Therefore, workability at the time of production of the inner pot 30 can be improved.

另外,在內鍋30中,通過罩50,從內鍋30的徑向外側覆蓋內鍋30的第一凸緣32D(第二凸緣34D)和管38。因此,即使將提高內鍋30的製作時的作業性的管38設置於外側側壁部34B,也不能通過罩50而辨認管38。另外,能夠將罩50作為內鍋30的把手而靈活運用。由以上可知,既能夠提高內鍋30的設計感,又能夠提高使用者的便利性。Further, in the inner pot 30, the first flange 32D (second flange 34D) of the inner pot 30 and the tube 38 are covered from the radially outer side of the inner pot 30 by the cover 50. Therefore, even if the tube 38 which improves the workability at the time of manufacture of the inner pot 30 is provided in the outer side wall part 34B, the tube 38 cannot be recognized by the cover 50. In addition, the cover 50 can be flexibly used as the handle of the inner pot 30. As described above, it is possible to improve the design of the inner pan 30 and improve the convenience of the user.

進而,在內鍋30中,內側容器32的第一凸緣32D通過折邊加工等,以捲繞於外側容器34的第二凸緣34D的上下的方式與第二凸緣34D壓接。即,內側容器32和外側容器34的重合部呈現所謂迷宮式構造(迷宮構造)而封閉。由此,能夠確保由內側容器32及外側容器34形成的密閉空間36內的氣密性。Further, in the inner pot 30, the first flange 32D of the inner container 32 is crimped to the second flange 34D so as to be wound around the upper and lower sides of the second flange 34D of the outer container 34 by hemming or the like. That is, the overlapping portion of the inner container 32 and the outer container 34 is closed by a so-called labyrinth structure (maze structure). Thereby, the airtightness in the sealed space 36 formed by the inner container 32 and the outer container 34 can be ensured.

另外,在本實施方式中,如上所述,內鍋30呈現在內部具有密閉空間36的雙層壁構造,密閉空間36內變成負壓或真空狀態。因此,能夠提高煮飯後的內鍋30的保溫性。Further, in the present embodiment, as described above, the inner pot 30 has a double wall structure having a sealed space 36 therein, and the inside of the sealed space 36 is in a negative pressure or a vacuum state. Therefore, the heat retention of the inner pot 30 after cooking can be improved.

(內鍋30的變形例)(Modification of inner pot 30)

接著,利用第9圖對變形例的內鍋60進行說明。Next, the inner pot 60 of the modification will be described with reference to Fig. 9.

變形例的內鍋60與第一實施方式的內鍋30相比,除以下所示的方面以外,其餘結構都同樣。此外,在第9圖中,對與第一實施方式同樣構成的部分賦予同一標號。The inner pot 60 of the modification is the same as the inner pot 30 of the first embodiment except for the following points. In the ninth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals.

即,在變形例的內鍋60中,內鍋60的底部的一部分形成為實心狀。具體地說,在內側容器32中,省略了內側底壁部32A,內側容器32形成為大致圓筒狀。另外,在外側容器34中,省略了外側底壁部34A,外側容器34形成為大致圓筒狀。而且,相對於內側容器32的內側角部32C及外側容器34的外側角部34C,在內鍋60的徑向內側設有大致實心圓板狀的底板62。該底板62與內側容器32及外側容器34同樣,由磁性體(在本案例中,作為一例,為不銹鋼)構成。而且,底板62的外周部通過電弧焊等,與內側角部32C及外側角部34C接合在一起。That is, in the inner pot 60 of the modification, a part of the bottom of the inner pot 60 is formed in a solid shape. Specifically, in the inner container 32, the inner bottom wall portion 32A is omitted, and the inner container 32 is formed in a substantially cylindrical shape. Further, in the outer container 34, the outer bottom wall portion 34A is omitted, and the outer container 34 is formed in a substantially cylindrical shape. Further, a bottom plate 62 having a substantially solid disk shape is provided on the inner side in the radial direction of the inner pot 60 with respect to the inner corner portion 32C of the inner container 32 and the outer corner portion 34C of the outer container 34. Similarly to the inner container 32 and the outer container 34, the bottom plate 62 is made of a magnetic material (in this case, stainless steel as an example). Further, the outer peripheral portion of the bottom plate 62 is joined to the inner corner portion 32C and the outer corner portion 34C by arc welding or the like.

由此,在內鍋60中,密閉空間36變成內側角部32C及內側側壁部32B和外側角部34C及外側側壁部34B之間的空間。另外,內鍋60的角部內(內側角部32C及外側角部34C之間的部分)的一部分構成密閉空間36的底部36A。此外,在內鍋60中,因為內鍋60的底部由底板62構成,所以本實施方式的內鍋30的連結銷42被省略。Thereby, in the inner pot 60, the sealed space 36 becomes a space between the inner corner portion 32C and the inner side wall portion 32B, and the outer corner portion 34C and the outer side wall portion 34B. Further, a part of the inside of the corner portion of the inner pot 60 (portion between the inner corner portion 32C and the outer corner portion 34C) constitutes the bottom portion 36A of the sealed space 36. Further, in the inner pot 60, since the bottom of the inner pot 60 is constituted by the bottom plate 62, the joint pin 42 of the inner pot 30 of the present embodiment is omitted.

而且,在變形例的內鍋60中,當將內鍋60的底部(底板62)加熱時,注入至密閉空間36內的工作液40也被加熱。當加熱後的工作液40的溫度達到沸點時,工作液40就沸騰,工作液40的一部分開始氣化。然後,氣化後的蒸氣沿著密閉空間36內的內側角部32C及內側側壁部32B,向密閉空間36內的側部36C側上升。由此,內鍋60的內側側壁部32B通過蒸氣而被加熱。另外,加熱了內側側壁部32B的蒸氣進行冷凝,從氣體變成液體作為工作液40。進而,變成液體後的工作液40通過自重而下降,返回到密閉空間36的底部36A。而且,在工作液40中,通過重複上述相變化的周期,內鍋30的內側側壁部32B被加熱。由以上可知,即使在變形例的內鍋60中,也與第一實施方式同樣,能夠高效地將內鍋60的內側側壁部32B加熱。Further, in the inner pot 60 of the modification, when the bottom portion (the bottom plate 62) of the inner pot 60 is heated, the working liquid 40 injected into the sealed space 36 is also heated. When the temperature of the heated working fluid 40 reaches the boiling point, the working fluid 40 boils and a portion of the working fluid 40 begins to vaporize. Then, the vaporized vapor rises along the inner corner portion 32C and the inner side wall portion 32B in the sealed space 36 toward the side portion 36C side in the sealed space 36. Thereby, the inner side wall portion 32B of the inner pot 60 is heated by the steam. Further, the vapor of the inner side wall portion 32B is heated and condensed, and the liquid is changed from the gas to the liquid as the working fluid 40. Further, the working fluid 40 that has become a liquid is lowered by its own weight, and returns to the bottom portion 36A of the sealed space 36. Further, in the working fluid 40, the inner side wall portion 32B of the inner pot 30 is heated by repeating the cycle of the above phase change. As described above, even in the inner pot 60 of the modified example, the inner side wall portion 32B of the inner pot 60 can be efficiently heated as in the first embodiment.

另外,在變形例的內鍋60中,密閉空間36的底部36A設定於內鍋60的角部內。因此,在工作液40氣化成了蒸氣時,能夠使該蒸氣沿著內側角部32C立即向密閉空間36的側部36C側移動(上升)。因此,能夠高效地使氣化後的蒸氣向密閉空間36的側部36C移動(上升),從而將內鍋60的內側側壁部32B加熱。Further, in the inner pot 60 of the modified example, the bottom portion 36A of the sealed space 36 is set in the corner portion of the inner pot 60. Therefore, when the working fluid 40 is vaporized into steam, the vapor can be immediately moved (raised) toward the side portion 36C side of the sealed space 36 along the inner corner portion 32C. Therefore, the vaporized vapor can be efficiently moved (raised) to the side portion 36C of the sealed space 36, and the inner side wall portion 32B of the inner pot 60 can be heated.

此外,在變形例的內鍋60中,內鍋60的密閉空間36變成內側角部32C及內側側壁部32B和外側角部34C及外側側壁部34B之間的空間,但也可以將密閉空間36設為外側角部34C及外側側壁部34B之間的空間。換言之,密閉空間36只要至少包含外側角部34C及外側側壁部34B之間的空間即可。在這種情況下,內鍋60的、比第9圖的雙點劃線L2更靠下側部分形成為實心狀的結構。Further, in the inner pot 60 of the modified example, the sealed space 36 of the inner pot 60 becomes a space between the inner corner portion 32C and the inner side wall portion 32B and the outer corner portion 34C and the outer side wall portion 34B, but the closed space 36 may be used. The space between the outer corner portion 34C and the outer side wall portion 34B is set. In other words, the sealed space 36 only needs to include at least a space between the outer corner portion 34C and the outer side wall portion 34B. In this case, the lower portion of the inner pot 60 is formed in a solid shape than the lower two-dot chain line L2 of FIG.

(關於內鍋30的內側底壁部32A與外側底壁部34A的連結方法的變形)(Modification of the method of connecting the inner bottom wall portion 32A and the outer bottom wall portion 34A of the inner pot 30)

接著,對內鍋30的內側底壁部32A與外側底壁部34A的連結方法的兩種變形進行說明。Next, two modifications of the method of connecting the inner bottom wall portion 32A and the outer bottom wall portion 34A of the inner pot 30 will be described.

(連結方法的變形1)(Modification 1 of the connection method)

下面,利用第10圖(A)對連結方法的變形1進行說明。在變形1中,除以下所示的方面以外,其餘結構都與第一實施方式同樣。此外,在第10圖(A)中,對與第一實施方式同樣構成的部件賦予同一標號。Next, a modification 1 of the connection method will be described using FIG. 10(A). In the first modification, the rest of the configuration is the same as that of the first embodiment except for the aspects shown below. In addition, in FIG. 10(A), the same components as those of the first embodiment are denoted by the same reference numerals.

即,在變形1中,省略了連結銷42,在內鍋30的內側底壁部32A和外側底壁部34A之間設有連結板70(廣義地說,是作為“連結部”而掌握的要素)。連結板70在俯視時形成為大致十字形狀。具體地說,連結板70由第一連結板72和一對第二連結板74構成。第一連結板72及第二連結板74形成為大致長條板狀,第一連結板72的長度方向的長度相對於第二連結板74的長度方向的長度設定為大致2倍。而且,第二連結板74的長度方向一端部與第一連結板72的長度方向中央部接合在一起,從而第二連結板74從該長度方向中央部向第一連結板72的板厚方向兩側伸出。由此,在連結板70上形成有4處連結片70A,連結片70A放射狀地從連結板70的中央部伸出。In other words, in the first modification, the connecting pin 42 is omitted, and the connecting plate 70 is provided between the inner bottom wall portion 32A and the outer bottom wall portion 34A of the inner pot 30 (in a broad sense, it is a "connecting portion". Element). The connecting plate 70 is formed in a substantially cross shape in plan view. Specifically, the connecting plate 70 is composed of a first connecting plate 72 and a pair of second connecting plates 74. The first connecting plate 72 and the second connecting plate 74 are formed in a substantially elongated plate shape, and the length of the first connecting plate 72 in the longitudinal direction is set to be substantially twice the length of the second connecting plate 74 in the longitudinal direction. Further, one end portion of the second connecting plate 74 in the longitudinal direction is joined to the central portion in the longitudinal direction of the first connecting plate 72, and the second connecting plate 74 is formed in the thickness direction of the first connecting plate 72 from the central portion in the longitudinal direction. Side extension. Thereby, four connection pieces 70A are formed in the connection plate 70, and the connection piece 70A radially protrudes from the center part of the connection plate 70.

而且,在俯視時,連結板70以連結板70的中央部與內鍋30的內側底壁部32A及外側底壁部34A的中央部重疊的方式配置於內側底壁部32A及外側底壁部34A之間。另外,連結板70的上端部與內側底壁部32A接合在一起,連結板70的下端部與外側底壁部34A接合在一起。由此,內側底壁部32A及外側底壁部34A通過連結板70而連結。另外,在該狀態下,密閉空間36的底部36A變成由連結板70隔開的狀態。In the plan view, the connecting plate 70 is disposed on the inner bottom wall portion 32A and the outer bottom wall portion such that the central portion of the connecting plate 70 overlaps the central portion of the inner bottom wall portion 32A and the outer bottom wall portion 34A of the inner pot 30. Between 34A. Further, the upper end portion of the coupling plate 70 is joined to the inner bottom wall portion 32A, and the lower end portion of the coupling plate 70 is joined to the outer bottom wall portion 34A. Thereby, the inner bottom wall portion 32A and the outer bottom wall portion 34A are coupled by the connecting plate 70. Further, in this state, the bottom portion 36A of the sealed space 36 is in a state of being separated by the connecting plate 70.

進而,在連結板70的各連結片70A的下端部形成有多個連通孔70B。由此,由連結板70隔開的密閉空間36的底部36A構成為通過連通孔70B而連通,且底部36A內的工作液40能夠在隔開的密閉空間36的底部36A內流動。Further, a plurality of communication holes 70B are formed in the lower end portion of each of the coupling pieces 70A of the coupling plate 70. Thereby, the bottom portion 36A of the sealed space 36 partitioned by the coupling plate 70 is configured to communicate through the communication hole 70B, and the working fluid 40 in the bottom portion 36A can flow in the bottom portion 36A of the partitioned space 36.

而且,在本變形1中,如上所述,通過連結板70,內側底壁部32A及外側底壁部34A連結在一起。因此,與本實施方式同樣,能夠抑制在加熱了內鍋30時的、內側底壁部32A及外側底壁部34A的膨脹。Further, in the first modification, as described above, the inner bottom wall portion 32A and the outer bottom wall portion 34A are coupled by the connecting plate 70. Therefore, similarly to the present embodiment, it is possible to suppress the expansion of the inner bottom wall portion 32A and the outer bottom wall portion 34A when the inner pot 30 is heated.

另外,在本變形1中,連結板70的連結片70A放射狀地從內側底壁部32A及外側底壁部34A的中央部伸出,並將內側底壁部32A及外側底壁部34A連結在一起。因此,在內鍋30的加熱時,能夠通過連結片70A而橫跨內側底壁部32A的徑向地將傳遞給連結板70的熱量進行傳遞。由此,在內側底壁部32A的徑向上,能夠通過連結片70A將內側底壁部32A大致均勻地加熱。In the first modification, the connecting piece 70A of the connecting plate 70 radially protrudes from the central portion of the inner bottom wall portion 32A and the outer bottom wall portion 34A, and connects the inner bottom wall portion 32A and the outer bottom wall portion 34A. Together. Therefore, at the time of heating of the inner pot 30, the heat transmitted to the connecting plate 70 can be transmitted in the radial direction across the inner bottom wall portion 32A by the connecting piece 70A. Thereby, the inner bottom wall portion 32A can be heated substantially uniformly by the connecting piece 70A in the radial direction of the inner bottom wall portion 32A.

進而,在連結板70的各連結片70A的下端部形成有多個連通孔70B。因此,即使連結板70以將密閉空間36的底部36A隔開的方式配置,底部36A內的工作液40也能夠在由連結板70隔開的密閉空間36的底部36A內流動。Further, a plurality of communication holes 70B are formed in the lower end portion of each of the coupling pieces 70A of the coupling plate 70. Therefore, even if the connecting plate 70 is disposed to partition the bottom portion 36A of the sealed space 36, the working fluid 40 in the bottom portion 36A can flow in the bottom portion 36A of the sealed space 36 partitioned by the connecting plate 70.

此外,在變形1中,在連結板70上形成有4處連結片70A,但連結片70A的數量可任意設定。Further, in the first modification, four connection pieces 70A are formed on the coupling plate 70, but the number of the connection pieces 70A can be arbitrarily set.

(連結方法的變形2)(Deformation 2 of the connection method)

下面,利用第10圖(B)對連結方法的變形2進行說明。在變形2中,除以下所示的方面以外,其餘結構都與第一實施方式同樣。此外,在第10圖(B)中,對與第一實施方式同樣構成的部件賦予同一標號。Next, a modification 2 of the connection method will be described using FIG. 10(B). In the modification 2, the rest of the configuration is the same as that of the first embodiment except for the aspects shown below. In addition, in FIG. 10(B), the same components as those of the first embodiment are denoted by the same reference numerals.

即,在變形2中,在連結銷42和內鍋30的內側底壁部32A之間設有大致圓板狀的中間板80,中間板80與連結銷42同樣,由磁性體(在本變形例中,作為一例,為不銹鋼)構成。即,在變形2中,中間板80介於連結銷42和內鍋30的內側底壁部32A之間,中間板80與連結銷42及內側底壁部32A接合在一起。因此,在內鍋30的加熱時,由連結銷42傳遞的熱量通過中間板80而分散,傳遞到內鍋30的內側底壁部32A的整體。由此,在變形2中,既能夠將內鍋30的內側底壁部32A在徑向上均勻地加熱,又能夠抑制加熱時的內側底壁部32A及外側底壁部34A的膨脹。In other words, in the deformation 2, a substantially disk-shaped intermediate plate 80 is provided between the coupling pin 42 and the inner bottom wall portion 32A of the inner pan 30, and the intermediate plate 80 is made of a magnetic body similarly to the coupling pin 42. In the example, it is a stainless steel) as an example. That is, in the deformation 2, the intermediate plate 80 is interposed between the coupling pin 42 and the inner bottom wall portion 32A of the inner pot 30, and the intermediate plate 80 is joined to the coupling pin 42 and the inner bottom wall portion 32A. Therefore, at the time of heating of the inner pot 30, the heat transferred by the joint pin 42 is dispersed by the intermediate plate 80, and is transmitted to the entire inner bottom wall portion 32A of the inner pot 30. Thus, in the deformation 2, the inner bottom wall portion 32A of the inner pot 30 can be uniformly heated in the radial direction, and the expansion of the inner bottom wall portion 32A and the outer bottom wall portion 34A during heating can be suppressed.

(第二實施方式)(Second embodiment)

下面,利用第11圖及第12圖對第二實施方式的作為“加熱烹調器”的內鍋90進行說明。Next, the inner pot 90 as the "heating cooker" of the second embodiment will be described with reference to Figs. 11 and 12 .

第二實施方式的內鍋90與第一實施方式的內鍋30相比,除以下所示的方面以外,其餘結構都同樣。此外,在第11圖中,對與第一實施方式同樣構成的部分賦予同一標號。另外,在第11圖中,在內鍋90中,圖示省略了罩50。The inner pot 90 of the second embodiment is the same as the inner pot 30 of the first embodiment except for the aspects described below. In the eleventh embodiment, the same components as those in the first embodiment are denoted by the same reference numerals. Further, in Fig. 11, in the inner pot 90, the cover 50 is omitted.

如第11圖(A)及(B)所示,在內鍋90中,內側容器32的內側底壁部32A沿著相對於上下方向正交的面而配置為大致水平(與外側容器34的外側底壁部34A大致平行)。另外,在內鍋90中,省略了第一實施方式的連結銷42,在外側容器34的外側底壁部34A形成有多處(在本實施方式中,3處)連結凹部34F(廣義地說,是作為“連結部”而掌握的要素)。連結凹部34F在縱剖視時,形成為向下側敞開的大致倒U字形凹狀,從外側底壁部34A向上側突出。另外,3處連結凹部34F相對於外側底壁部34A的中心部而配置於內鍋90的徑向外側,並且在內鍋90的周向上,配置為等間隔(每隔120度)。而且,連結凹部34F的頂部相鄰地配置於內側容器32的內側底壁部32A的下面,通過點焊,與內側底壁部32A接合在一起。由此,內側底壁部32A和外側底壁部34A通過連結凹部34F而連結在一起。此外,如上所述,在第二實施方式中,內側容器32的內側底壁部32A沿著相對於上下方向正交的面而配置為大致水平,但與第一實施方式同樣,也可以使內側底壁部32A以向上側凸的方式彎曲若干。As shown in FIGS. 11(A) and (B), in the inner pot 90, the inner bottom wall portion 32A of the inner container 32 is disposed substantially horizontally along the surface orthogonal to the vertical direction (with the outer container 34). The outer bottom wall portions 34A are substantially parallel). In the inner pot 90, the joint pin 42 of the first embodiment is omitted, and a plurality of (in the present embodiment, three places) connection recesses 34F are formed in the outer bottom wall portion 34A of the outer container 34 (broadly speaking It is an element that is grasped as a "connection". The connecting recessed portion 34F is formed in a substantially inverted U-shaped concave shape that is open to the lower side in the longitudinal cross-sectional view, and protrudes upward from the outer bottom wall portion 34A. In addition, the three connection recessed portions 34F are disposed on the outer side in the radial direction of the inner pot 90 with respect to the central portion of the outer bottom wall portion 34A, and are disposed at equal intervals (every 120 degrees) in the circumferential direction of the inner pot 90. Further, the top of the coupling recess 34F is disposed adjacent to the lower surface of the inner bottom wall portion 32A of the inner container 32, and is joined to the inner bottom wall portion 32A by spot welding. Thereby, the inner bottom wall portion 32A and the outer bottom wall portion 34A are coupled together by the connection concave portion 34F. Further, as described above, in the second embodiment, the inner bottom wall portion 32A of the inner container 32 is disposed substantially horizontally along the surface orthogonal to the vertical direction, but the inner side may be the same as in the first embodiment. The bottom wall portion 32A is curved a certain amount in a convex manner toward the upper side.

另外,在內側容器32的第一凸緣32D中,省略了第一實施方式的下凸緣部32D2。而且,內側容器32的第一凸緣32D(上凸緣部32D1)及外側容器34的第二凸緣34D以上下重疊的方式配置,第一凸緣32D的前端部和外側容器34的第二凸緣34D的前端部通過激光焊接等而接合在一起。另外,除第一凸緣32D的前端部和第二凸緣34D的前端部的接合以外,還可對第一凸緣32D及第二凸緣34D的上下重疊的重合部實施點焊、無縫焊接、激光焊接等,而將兩者接合在一起。Further, in the first flange 32D of the inner container 32, the lower flange portion 32D2 of the first embodiment is omitted. Further, the first flange 32D (upper flange portion 32D1) of the inner container 32 and the second flange 34D of the outer container 34 are disposed to overlap each other, and the front end portion of the first flange 32D and the second outer container 34 are disposed. The front end portions of the flanges 34D are joined together by laser welding or the like. Further, in addition to the joining of the front end portion of the first flange 32D and the front end portion of the second flange 34D, the overlapping portions of the first flange 32D and the second flange 34D which are vertically overlapped may be spot-welded and seamless. Welding, laser welding, etc., and joining the two together.

進而,在內鍋90中,在管38的前端部的內部設有含有玻璃泥的密封材料92,通過密封材料92,將管38的開口部密封,確保密閉空間36內的氣密性。Further, in the inner pot 90, a sealing material 92 containing glass mud is provided inside the front end portion of the tube 38, and the opening of the tube 38 is sealed by the sealing material 92 to ensure airtightness in the sealed space 36.

接著,利用第12圖對第二實施方式的內鍋90的製造方法進行說明。Next, a method of manufacturing the inner pot 90 of the second embodiment will be described with reference to Fig. 12 .

如第12圖(a)所示,在內鍋90的製造方法中,首先,通過衝壓加工(拉深加工),將內側容器32及外側容器34成型(衝壓工序)。另外,在該衝壓工序中,在外側容器34的外側底壁部34A也將連結凹部34F成型。As shown in Fig. 12(a), in the method of manufacturing the inner pot 90, first, the inner container 32 and the outer container 34 are formed by press working (draw processing) (pressing step). Moreover, in this press process, the connection recessed part 34F is also formed in the outer side bottom wall part 34A of the outer side container 34.

在衝壓工序後,如第12圖(b)所示,在外側容器34的外側側壁部34B的上部實施孔加工,在外側容器34上形成貫通孔34E(鑽孔工序)。After the pressing step, as shown in Fig. 12(b), the upper portion of the outer side wall portion 34B of the outer container 34 is subjected to hole processing, and the outer container 34 is formed with a through hole 34E (drilling step).

在鑽孔工序後,如第12圖(c)所示,在外側容器34的內部配置內側容器32。具體地說,在外側容器34的連結凹部34F的頂部載置內側容器32的內側底壁部32A,以將內側容器32的第一凸緣32D重疊於外側容器34的第二凸緣34D的上側的方式配置。然後,對內側容器32的第一凸緣32D的前端部及外側容器34的第二凸緣34D的前端部實施激光焊接,將兩者的前端部接合(凸緣接合工序)。由此,內側容器32及外側容器34連結在一起,在內鍋90的內部形成密閉空間36。After the drilling process, as shown in Fig. 12(c), the inner container 32 is disposed inside the outer container 34. Specifically, the inner bottom wall portion 32A of the inner container 32 is placed on the top of the coupling recess 34F of the outer container 34 to overlap the first flange 32D of the inner container 32 on the upper side of the second flange 34D of the outer container 34. Way of configuration. Then, the front end portion of the first flange 32D of the inner container 32 and the front end portion of the second flange 34D of the outer container 34 are laser welded to join the front end portions of the both sides (flange joining step). Thereby, the inner container 32 and the outer container 34 are coupled together, and a sealed space 36 is formed inside the inner pot 90.

另外,在凸緣接合工序中,除第一凸緣32D的前端部及第二凸緣34D的前端部的接合以外,還可對第一凸緣32D及第二凸緣34D的上下重疊的重合部實施點焊、無縫焊接、激光焊接等,而將兩者接合(在第12圖(c)中,圖示點焊的例子)。此外,在激光焊接的情況下,從第一凸緣32D的上側或第二凸緣34D的下側實施激光焊接,而將兩者接合。在這種情況下,當考慮內鍋90的設計感時,優選從第二凸緣34D的下側實施激光焊接。Further, in the flange joining step, in addition to the joining of the front end portion of the first flange 32D and the front end portion of the second flange 34D, the vertical overlap of the first flange 32D and the second flange 34D may be overlapped. The part is joined to spot welding, seamless welding, laser welding, etc., and the two are joined (in the case of Fig. 12(c), an example of spot welding is shown). Further, in the case of laser welding, laser welding is performed from the upper side of the first flange 32D or the lower side of the second flange 34D, and the both are joined. In this case, when considering the design feeling of the inner pot 90, it is preferable to perform laser welding from the lower side of the second flange 34D.

如第12圖(d)所示,在凸緣接合工序後,將點焊用的上下一對槍配置在內側容器32的內側底壁部32A的上側及外側容器34的連結凹部34F內,通過點焊,將內側底壁部32A和連結凹部34F的頂部接合起來(鍋底接合工序)。由此,內側容器32的內側底壁部32A和外側容器34的外側底壁部34A連結在一起。As shown in Fig. 12(d), after the flange joining step, the upper and lower pair of guns for spot welding are placed in the upper side of the inner bottom wall portion 32A of the inner container 32 and the connecting recess 34F of the outer container 34, and passed through Spot welding joins the inner bottom wall portion 32A and the top portion of the coupling recess portion 34F (pot bottom joining step). Thereby, the inner bottom wall portion 32A of the inner container 32 and the outer bottom wall portion 34A of the outer container 34 are coupled together.

如第12圖(e)所示,在鍋底接合工序後,將管38的基端部插入外側容器34的貫通孔34E內,通過電弧焊,將管38的基端部與貫通孔34E的緣部接合(真空吸口接合工序)。由此,在外側容器34上設有管38,密閉空間36內和內鍋90的外部通過管38而連通。As shown in Fig. 12(e), after the pan-and-bottom joining step, the base end portion of the tube 38 is inserted into the through hole 34E of the outer container 34, and the base end portion of the tube 38 and the edge of the through hole 34E are arc-welded. Part joining (vacuum suction joining process). Thereby, the tube 38 is provided in the outer container 34, and the inside of the sealed space 36 and the outside of the inner pot 90 are connected by the tube 38.

如第12圖(f)所示,在真空吸口接合工序後,對內側容器32的內周面實施塗氟處理,形成由氟樹脂(特氟隆)構成的層,並且對外側容器34的外周面實施塗裝處理,形成由耐熱塗料構成的層(表面處理工序)。As shown in Fig. 12(f), after the vacuum suction joining step, the inner peripheral surface of the inner container 32 is subjected to fluorine coating treatment to form a layer made of a fluororesin (Teflon), and the outer periphery of the outer container 34 is formed. The surface is subjected to a coating treatment to form a layer composed of a heat resistant paint (surface treatment step).

如第12圖(g)所示,在表面處理工序後,從管38中將工作液40注入密閉空間36內。另外,在將工作液40注入了密閉空間36內以後,使用真空密封裝置,將密閉空間36內的空氣排出,並且使用密封材料92,將管38密封。具體地說,通過真空密封裝置的真空泵,將密閉空間36內的空氣排出,當密閉空間36內的氣壓變成規定值以下時,通過真空密封裝置,向管38內填充密封材料92。另外,真空密封裝置具有渦卷狀的感應線圈,將管38插入感應線圈內。然後,通過對感應線圈附加高頻電流,局部地對管38進行感應加熱,使密封材料92熔融。其後,將管38冷卻,從而通過密封材料92將管38密封(真空密封工序)。As shown in Fig. 12(g), after the surface treatment step, the working fluid 40 is injected into the sealed space 36 from the tube 38. Further, after the working fluid 40 is injected into the sealed space 36, the air in the sealed space 36 is discharged using a vacuum sealing device, and the sealing material 92 is used to seal the tube 38. Specifically, the air in the sealed space 36 is discharged by the vacuum pump of the vacuum sealing device, and when the air pressure in the sealed space 36 becomes equal to or lower than a predetermined value, the sealing material 92 is filled into the tube 38 by the vacuum sealing device. Further, the vacuum sealing device has a spiral-shaped induction coil, and the tube 38 is inserted into the induction coil. Then, by applying a high-frequency current to the induction coil, the tube 38 is locally inductively heated to melt the sealing material 92. Thereafter, the tube 38 is cooled to seal the tube 38 by the sealing material 92 (vacuum sealing process).

如第12圖(h)所示,在真空密封工序後,將管38的長度方向中間部切斷(切斷工序)。As shown in Fig. 12 (h), after the vacuum sealing step, the intermediate portion in the longitudinal direction of the tube 38 is cut (cutting step).

在切斷工序後,如第12圖(i)所示,將一對罩部件52(罩50)組裝於內側容器32的第一凸緣32D及外側容器34的第二凸緣34D(罩組裝工序)。After the cutting step, as shown in Fig. 12(i), the pair of cover members 52 (cover 50) are assembled to the first flange 32D of the inner container 32 and the second flange 34D of the outer container 34 (cover assembly) Process).

由以上可知,內鍋90的製造完成。As apparent from the above, the manufacture of the inner pot 90 is completed.

此外,也可以在通過真空裝置進行了排氣後的真空環境狀態(真空室內)下進行內鍋90的製造工序。在這種情況下,第12圖(a)~(i)所示的全部工序也可以在真空環境狀態下進行,進行了第12圖(a)所示的衝壓工序和第12圖(b)所示的鑽孔工序以後的工序也可以在真空環境狀態下進行。由此,在第12圖(g)所示的真空密封工序中,由於內鍋90已經處於真空環境,因此可省略抽真空的工序。在這種情況下,也可以在外側容器34中省略抽真空用的管,並將從外側覆蓋(封閉)貫通孔34E的金屬板材焊接於外側容器34而進行真空密封。也可以使用玻璃泥作為真空密封材料。另外,在這種情況下,可將工作液40以固體(冰)狀態從貫通孔34E投入密閉空間36中,因此也可省略工作液注入用的管。Further, the manufacturing process of the inner pot 90 may be performed in a vacuum environment state (vacuum chamber) after evacuation by a vacuum device. In this case, all the steps shown in Figs. 12(a) to (i) can be performed in a vacuum environment, and the pressing step shown in Fig. 12(a) and Fig. 12(b) are performed. The steps after the drilling process shown can also be carried out in a vacuum environment. Thereby, in the vacuum sealing process shown in Fig. 12(g), since the inner pot 90 is already in a vacuum environment, the step of evacuating can be omitted. In this case, the tube for vacuuming may be omitted in the outer container 34, and the metal plate material that covers (closes) the through hole 34E from the outside may be welded to the outer container 34 to perform vacuum sealing. Glass mud can also be used as a vacuum sealing material. Further, in this case, the working fluid 40 can be introduced into the sealed space 36 from the through hole 34E in a solid (ice) state. Therefore, the pipe for injecting the working fluid can be omitted.

由此,能夠製造出無論是在內側容器32還是在外側容器34上都沒有管等突起的內鍋90。因此,內鍋90變成無管的結構,所以能夠容易清洗內鍋90,能夠使內鍋90的使用方便性更優越,並且能夠進一步提高內鍋90的設計感。Thereby, it is possible to manufacture the inner pot 90 which has no protrusions, such as a tube, in the inner container 32 or the outer container 34. Therefore, since the inner pot 90 has a structure without a tube, the inner pot 90 can be easily cleaned, the ease of use of the inner pot 90 can be further improved, and the design feeling of the inner pot 90 can be further improved.

而且,在第二實施方式中,當將內鍋90的底部加熱時,注入至密閉空間36內的工作液40也被加熱。當加熱後的工作液40的溫度達到沸點時,工作液40就進行沸騰,工作液40的一部分進行氣化。然後,氣化後的蒸氣沿著密閉空間36內的內側角部32C及內側側壁部32B,向密閉空間36內的側部36C側上升。由此,內鍋90的內側側壁部32B通過蒸氣而加熱。另外,加熱了內側側壁部32B的蒸氣進行冷凝,從氣體變成液體作為工作液40。進而,變成液體的工作液40通過自重而下降,返回到密閉空間36的底部36A。而且,在工作液40中,通過重複上述相變周期,將內側容器32的內側側壁部32B加熱。由以上可知,在第二實施方式的內鍋90中,也與第一實施方式同樣,能夠高效地將內鍋90的內側側壁部32B加熱,從而大致均勻地加熱內鍋90整體。Further, in the second embodiment, when the bottom of the inner pot 90 is heated, the working fluid 40 injected into the sealed space 36 is also heated. When the temperature of the heated working fluid 40 reaches the boiling point, the working fluid 40 is boiled, and a part of the working fluid 40 is vaporized. Then, the vaporized vapor rises along the inner corner portion 32C and the inner side wall portion 32B in the sealed space 36 toward the side portion 36C side in the sealed space 36. Thereby, the inner side wall portion 32B of the inner pot 90 is heated by the steam. Further, the vapor of the inner side wall portion 32B is heated and condensed, and the liquid is changed from the gas to the liquid as the working fluid 40. Further, the working fluid 40 that has become a liquid is lowered by its own weight, and returns to the bottom portion 36A of the sealed space 36. Further, in the working fluid 40, the inner side wall portion 32B of the inner container 32 is heated by repeating the above-described phase change cycle. As described above, in the inner pot 90 of the second embodiment, as in the first embodiment, the inner side wall portion 32B of the inner pot 90 can be efficiently heated, and the entire inner pot 90 can be heated substantially uniformly.

另外,在第二實施方式的內鍋90中,在外側容器34的外側底壁部34A形成有多個連結凹部34F,連結凹部34F通過點焊等與內側容器32的內側底壁部32A接合在一起。由此,能夠以簡易結構來連結內側底壁部32A及外側底壁部34A。另外,與第一實施方式相比,能夠消減部件數量,並且能夠消減製造工時數。Further, in the inner pot 90 of the second embodiment, the plurality of connection concave portions 34F are formed in the outer bottom wall portion 34A of the outer container 34, and the connection concave portion 34F is joined to the inner bottom wall portion 32A of the inner container 32 by spot welding or the like. together. Thereby, the inner bottom wall portion 32A and the outer bottom wall portion 34A can be connected with a simple configuration. Further, compared with the first embodiment, the number of components can be reduced, and the number of manufacturing man-hours can be reduced.

另外,在第二實施方式的內鍋90中,內側容器32的第一凸緣32D的前端部和外側容器34的第二凸緣34D的前端部通過激光焊接等而接合在一起。進而,第一凸緣32D和第二凸緣34D的上下重疊的重合部通過點焊、無縫焊接、激光焊接等而接合在一起。由此,能夠提高第一凸緣32D和第二凸緣34D的接合強度,並且能夠提高內鍋90的開口部的剛性。其結果是,在內鍋90的加熱時,能夠抑制內側容器32的變形。Further, in the inner pot 90 of the second embodiment, the front end portion of the first flange 32D of the inner container 32 and the front end portion of the second flange 34D of the outer container 34 are joined by laser welding or the like. Further, the overlapping portions of the first flange 32D and the second flange 34D that are vertically overlapped are joined by spot welding, seamless welding, laser welding, or the like. Thereby, the joint strength of the first flange 32D and the second flange 34D can be improved, and the rigidity of the opening of the inner pot 90 can be improved. As a result, deformation of the inner container 32 can be suppressed during heating of the inner pot 90.

即,例如,在僅第一凸緣32D的前端部和第二凸緣34D的前端部彼此的接合(溶接)中,在內鍋90的加熱時,通過密閉空間36的內壓上升,內側容器32有可能按照以第一凸緣32D的前端部為起點而抬起的方式變形。與此相對,通過將第一凸緣32D和第二凸緣34D的重合部接合,內鍋90的開口部的剛性升高。其結果是,能夠抑制在內鍋90的加熱時的內側容器32的變形,並且能夠良好地維持第一凸緣32D和第二凸緣34D的接合狀態。In other words, for example, in the joining (melting) of only the front end portion of the first flange 32D and the front end portion of the second flange 34D, the internal pressure of the sealed space 36 rises during heating of the inner pot 90, and the inner container It is possible that the 32 is deformed so as to be lifted from the front end portion of the first flange 32D. On the other hand, by joining the overlapping portions of the first flange 32D and the second flange 34D, the rigidity of the opening portion of the inner pot 90 is increased. As a result, deformation of the inner container 32 during heating of the inner pot 90 can be suppressed, and the joined state of the first flange 32D and the second flange 34D can be favorably maintained.

此外,在第二實施方式中,在外側容器34的外側底壁部34A形成有多個連結凹部34F,但也可以在外側底壁部34A形成一處連結凹部34F。在這種情況下,也可以將連結凹部34F配置於外側底壁部34A的中央部,並將連結凹部34F的頂部和內側底壁部32A的中央部接合在一起。Further, in the second embodiment, the plurality of connection concave portions 34F are formed in the outer bottom wall portion 34A of the outer container 34. However, the one connection concave portion 34F may be formed in the outer bottom wall portion 34A. In this case, the connection concave portion 34F may be disposed at the center portion of the outer bottom wall portion 34A, and the top portion of the connection concave portion 34F and the central portion of the inner bottom wall portion 32A may be joined together.

(第三實施方式)(Third embodiment)

下面,利用第13圖對第三實施方式的作為“加熱烹調器”的內鍋100進行說明。Next, an inner pot 100 as a "heating cooker" of the third embodiment will be described with reference to Fig. 13.

第三實施方式的內鍋100與第一實施方式的內鍋30相比,除以下所示的方面以外,其餘結構都同樣。此外,在第13圖中,對與第一實施方式同樣構成的部分賦予同一標號。另外,在第13圖中,在內鍋100上圖示省略了罩50。The inner pot 100 of the third embodiment is the same as the inner pot 30 of the first embodiment except for the aspects described below. In addition, in the thirteenth embodiment, the same components as those of the first embodiment are denoted by the same reference numerals. Further, in Fig. 13, the cover 50 is omitted from illustration in the inner pot 100.

在第三實施方式中,在內鍋100上省略了第一實施方式的連結銷42。另外,在內側容器32的內側底壁部32A形成有向上側隆起的拉深部32G。拉深部32G形成為呈現與內側底壁部32A同心圓狀的大致圓板狀,拉深部32G的外周部平滑地彎曲,並與內側底壁部32A連接在一起。另外,作為一例,拉深部32G的直徑設定為內側底壁部32A的直徑的60%,拉深部32G的拉深高度設定為3mm。In the third embodiment, the joint pin 42 of the first embodiment is omitted from the inner pot 100. Further, a deep drawing portion 32G that is raised upward is formed in the inner bottom wall portion 32A of the inner container 32. The deep portion 32G is formed in a substantially disk shape concentric with the inner bottom wall portion 32A, and the outer peripheral portion of the deep portion 32G is smoothly curved and connected to the inner bottom wall portion 32A. Further, as an example, the diameter of the deep drawing portion 32G is set to 60% of the diameter of the inner bottom wall portion 32A, and the drawing height of the deep portion 32G is set to 3 mm.

另外,在外側容器34的外側底壁部34A形成有與拉深部32G同樣構成的拉深部34G。即,拉深部34G形成為呈現與外側底壁部34A同心圓狀的大致圓板狀,從外側底壁部34A向上側隆起。另外,拉深部34G的外周部平滑地彎曲,與外側底壁部34A連接在一起。進而,作為一例,拉深部34G的直徑設定為外側底壁部34A的直徑的60%,拉深部34G的拉深高度設定為3mm。Further, a drawing portion 34G having the same configuration as the drawing portion 32G is formed in the outer bottom wall portion 34A of the outer container 34. In other words, the deep drawing portion 34G is formed in a substantially disk shape that is concentric with the outer bottom wall portion 34A, and is raised upward from the outer bottom wall portion 34A. Further, the outer peripheral portion of the deep drawing portion 34G is smoothly curved and connected to the outer bottom wall portion 34A. Further, as an example, the diameter of the deep drawing portion 34G is set to 60% of the diameter of the outer bottom wall portion 34A, and the drawing height of the deep portion 34G is set to 3 mm.

另外,在第三實施方式中,與第二實施方式同樣,在內側容器32的第一凸緣32D中省略了第一實施方式的下凸緣部32D2。而且,內側容器32的第一凸緣32D(上凸緣部32D1)及外側容器34的第二凸緣34D以上下重疊的方式配置,第一凸緣32D的前端部與外側容器34的第二凸緣34D的前端部通過激光焊接等而接合。另外,第一凸緣32D和第二凸緣34D的上下重疊的重合部通過點焊等而接合。Further, in the third embodiment, as in the second embodiment, the lower flange portion 32D2 of the first embodiment is omitted in the first flange 32D of the inner container 32. Further, the first flange 32D (upper flange portion 32D1) of the inner container 32 and the second flange 34D of the outer container 34 are disposed to overlap each other, and the front end portion of the first flange 32D and the second outer container 34 are disposed. The front end portion of the flange 34D is joined by laser welding or the like. Further, the overlapping portions of the first flange 32D and the second flange 34D that are vertically overlapped are joined by spot welding or the like.

而且,在第三實施方式中,當將內鍋100的底部加熱時,注入至密閉空間36內的工作液40也被加熱,並重複進行工作液40的相變周期。由此,在第三實施方式的內鍋100中,也與第一實施方式同樣,能夠高效地將內鍋100的內側側壁部32B加熱,從而大致均勻地加熱內鍋100整體。Further, in the third embodiment, when the bottom portion of the inner pot 100 is heated, the working liquid 40 injected into the sealed space 36 is also heated, and the phase change period of the working liquid 40 is repeated. Thus, in the inner pot 100 of the third embodiment, as in the first embodiment, the inner side wall portion 32B of the inner pot 100 can be efficiently heated, and the entire inner pot 100 can be heated substantially uniformly.

另外,在第三實施方式中,向上側隆起的拉深部32G形成於內側底壁部32A,向上側隆起的拉深部34G形成於外側底壁部34A。因此,拉深部32G(拉深部34G)作為內側底壁部32A(外側底壁部34A)的加強用拉深發揮功能。由此,在將內鍋100的底部加熱時,即使密閉空間36的內壓上升,也能夠抑制內側底壁部32A及外側底壁部34A的撓曲(變形)。Further, in the third embodiment, the deep-drawn portion 32G that is raised upward is formed in the inner bottom wall portion 32A, and the deep-drawn portion 34G that is raised upward is formed in the outer bottom wall portion 34A. Therefore, the deep drawing portion 32G (draw portion 34G) functions as a reinforcing deep drawing of the inner bottom wall portion 32A (outer bottom wall portion 34A). Thus, when the bottom of the inner pot 100 is heated, the inner bottom wall portion 32A and the outer bottom wall portion 34A can be prevented from being bent (deformed) even if the internal pressure of the sealed space 36 is increased.

下面,針對該點,利用在將密閉空間36內的內壓制成了假設為加熱時的最大壓力的5atm時的、內側底壁部32A及外側底壁部34A的上下方向的撓曲(變形)量進行說明。即,已判明在內側底壁部32A及外側底壁部34A省略了拉深部32G及拉深部34G的鍋中,在將密閉空間36內的內壓制成了5atm時,內側底壁部32A及外側底壁部34A的上下方向的撓曲(變形)量為2.4mm。與此相對,已確認在將第三實施方式的鍋100的密閉空間36內的內壓制成了5atm時,內側底壁部32A及外側底壁部34A的上下方向的撓曲(變形)量為0.3mm。由此,根據第三實施方式的內鍋100,能夠抑制在加熱了底部時的、內側底壁部32A及外側底壁部34A的撓曲(變形)。In this case, in the vertical direction, the inner bottom wall portion 32A and the outer bottom wall portion 34A are deflected (deformed) in the vertical direction when the inner portion of the sealed space 36 is pressed to 5 atm, which is assumed to be the maximum pressure during heating. The amount is explained. In other words, in the pot in which the deep bottom portion 32A and the outer bottom wall portion 34A are omitted, the deep bottom portion 32A and the deep bottom portion 34G are formed, and when the inner portion of the sealed space 36 is pressed to 5 atm, the inner bottom wall portion 32A and the outer side are formed. The amount of deflection (deformation) of the bottom wall portion 34A in the vertical direction was 2.4 mm. On the other hand, when the inner portion of the sealed space 36 of the pot 100 of the third embodiment is pressed to 5 atm, the amount of deflection (deformation) in the vertical direction of the inner bottom wall portion 32A and the outer bottom wall portion 34A is determined. 0.3mm. Thus, according to the inner pot 100 of the third embodiment, it is possible to suppress the deflection (deformation) of the inner bottom wall portion 32A and the outer bottom wall portion 34A when the bottom portion is heated.

另外,在第三實施方式中,與第一實施方式相比,省略了連結銷42,因此既能夠消減部件數量,又能夠抑制在鍋100的加熱時的、內側底壁部32A及外側底壁部34A的撓曲(變形)。Further, in the third embodiment, since the coupling pin 42 is omitted as compared with the first embodiment, the number of components can be reduced, and the inner bottom wall portion 32A and the outer bottom wall can be suppressed during heating of the pan 100. The deflection (deformation) of the portion 34A.

(關於管38的變形)(About the deformation of the tube 38)

下面,利用第二實施方式的內鍋90對第一實施方式(包含變形例)~第三實施方式的內鍋30、60、90、100所使用的管38的變形進行說明。Next, the deformation of the tube 38 used in the inner pots 30, 60, 90, and 100 of the first embodiment (including the modified examples) to the third embodiment will be described using the inner pot 90 of the second embodiment.

(關於管38的變形1)(About the deformation of the tube 38)

如第14圖(A)及(B)所示,在管38的變形1中,在內鍋90上設有多根(在本變形1中,2根)管38。2根管38中的一根構成為向密閉空間36注入工作液40用的管,另一根管38構成為對密閉空間36抽真空用的管。即,在本變形1中,設置針對內鍋90的每道製造工序(工作液40的注入工序、抽真空工序)的管38。由此,能夠實現向密閉空間36注入工作液40的工序、及對密閉空間36抽真空的工序的效率化。As shown in Fig. 14 (A) and (B), in the deformation 1 of the tube 38, a plurality of (two in the present modification, two) tubes 38 are provided in the inner pot 90. In the two tubes 38 One pipe is configured to inject the working fluid 40 into the sealed space 36, and the other pipe 38 is configured as a pipe for evacuating the sealed space 36. In other words, in the first modification, the tube 38 for each manufacturing process of the inner pot 90 (injection process of the working fluid 40, vacuuming process) is provided. Thereby, the process of injecting the working fluid 40 into the sealed space 36 and the efficiency of the process of evacuating the sealed space 36 can be achieved.

另外,在變形1中,2根管38在內鍋90的周向上配置為等間隔(隔開180度)。即,2根管38對向地配置於內鍋90的徑向上。進而,作為針對管38的變形1的罩,在內鍋90上設有僅覆蓋各管38的一對管罩110來代替罩50。該管罩110形成為以上下方向為厚度方向的大致矩形板狀。另外,在管罩110上形成有向內鍋90的徑向內側敞開的凹部110A,在從內鍋的徑向看時,凹部110A形成為圓形狀。而且,管38嵌入凹部110A內,管罩110安裝於內鍋90。由此,能夠將覆蓋管38的管罩110作為內鍋90的把手來利用,並且能夠將管38作為把手(管罩110)的安裝部(芯部)而靈活運用。而且,如上所述,通過將2根管38等間隔地配置在內鍋90的周向上,能夠平衡良好地配置把手即管罩110。因此,能夠提高內鍋90的易握度,並且能夠提高對於使用者的便利性。Further, in the modification 1, the two tubes 38 are arranged at equal intervals (180 degrees apart) in the circumferential direction of the inner pot 90. That is, the two tubes 38 are disposed opposite to each other in the radial direction of the inner pot 90. Further, as a cover for the deformation 1 of the tube 38, a pair of tube covers 110 covering only the respective tubes 38 are provided in the inner pot 90 instead of the cover 50. The tube cover 110 is formed in a substantially rectangular plate shape in which the upper and lower directions are in the thickness direction. Further, the tube cover 110 is formed with a concave portion 110A that is open to the radially inner side of the inner pot 90, and the concave portion 110A is formed in a circular shape when viewed from the radial direction of the inner pot. Further, the tube 38 is fitted into the recess 110A, and the tube cover 110 is attached to the inner pot 90. Thereby, the tube cover 110 of the cover tube 38 can be utilized as a handle of the inner pot 90, and the tube 38 can be utilized as a mounting part (core part) of a handle (tube cover 110). Further, as described above, by arranging the two tubes 38 at equal intervals in the circumferential direction of the inner pot 90, the tube cover 110, which is a handle, can be disposed in a well-balanced manner. Therefore, the easy grip of the inner pot 90 can be improved, and the convenience for the user can be improved.

此外,在變形1中,將2根管38設置於內鍋90,但也可以將3根以上的管38設置於內鍋90。另外,在這種情況下,也可以考慮使用管38的作業時間(工作液40的注入作業時間、及抽真空的作業時間),來設定設置於內鍋90的管38的根數。例如,在抽真空的作業時間比工作液40的注入時間長的情況下,也可以使抽真空用的管38的根數比工作液40的注入用的管38的根數多。作為一例,也可以將工作液40的注入用的管38設為1根,且將抽真空用的管38設為2根。由此,能夠實現使用管38的作業時間的縮短化,進而能夠實現內鍋90的製造時間的縮短化。Further, in the modification 1, the two tubes 38 are provided in the inner pot 90, but three or more tubes 38 may be provided in the inner pot 90. Further, in this case, the number of the tubes 38 provided in the inner pot 90 may be set in consideration of the working time of the tube 38 (the injection working time of the working fluid 40 and the working time for vacuuming). For example, when the working time for vacuuming is longer than the injection time of the working fluid 40, the number of tubes 38 for vacuuming may be larger than the number of tubes 38 for injecting the working fluid 40. As an example, the number of the tubes 38 for injecting the working fluid 40 may be one, and the number of tubes 38 for vacuuming may be two. Thereby, the work time of using the tube 38 can be shortened, and the manufacturing time of the inner pot 90 can be shortened.

另外,在變形1中,多個管38的直徑尺寸設定為相同,但也可以將多個管38的直徑尺寸設定為不同的尺寸。在這種情況下,與上述同樣,也可以考慮使用管38的作業時間來變更設置於內鍋90的管38的直徑尺寸。例如,在抽真空的作業時間比工作液40的注入時間長的情況下,也可以使抽真空用的管38的直徑尺寸比工作液40的注入用的管38的直徑尺寸大。由此,與上述同樣,能夠實現作業時間的縮短化。Further, in the modification 1, the diameters of the plurality of tubes 38 are set to be the same, but the diameters of the plurality of tubes 38 may be set to different sizes. In this case, similarly to the above, the diameter of the tube 38 provided in the inner pot 90 can be changed in consideration of the working time of the tube 38. For example, when the working time for evacuation is longer than the injection time of the working fluid 40, the diameter of the tube 38 for vacuuming may be larger than the diameter of the tube 38 for injection of the working fluid 40. Thereby, as in the above, the work time can be shortened.

另外,在變形1中,多個(2根)管38以在內鍋90的周向上隔開180度的方式配置,但內鍋90的周向的、多個管38的位置可任意設定。例如,也可以將多個管38在內鍋90的周向上配置於相鄰的位置。由此,例如能夠實現將工作液注入用及抽真空用的各管與管38連接時的作業空間的小型化。另外,例如能夠抑制與各管38連接的管的拖動作業等,並且能夠有助於內鍋90的製造工時數的消減。Further, in the first modification, the plurality of (two) tubes 38 are disposed 180 degrees apart in the circumferential direction of the inner pot 90, but the positions of the plurality of tubes 38 in the circumferential direction of the inner pot 90 can be arbitrarily set. For example, a plurality of tubes 38 may be disposed at adjacent positions in the circumferential direction of the inner pot 90. Thereby, for example, it is possible to reduce the size of the working space when the respective tubes for injecting the working fluid and the vacuum are connected to the tube 38. Further, for example, it is possible to suppress the drag operation of the tube connected to each of the tubes 38, and the like, and it is possible to contribute to the reduction in the number of manufacturing man-hours of the inner pot 90.

(關於管38的變形2)(About the deformation of tube 38)

在變形2中,除以下所示的方面以外,其餘結構都與上述變形1同樣。In the modification 2, the rest of the configuration is the same as the above-described modification 1 except for the aspects described below.

即,如第15圖所示,在變形2中,管38設置於內側容器32。具體地說,管38從內側容器32的內側側壁部32B向內鍋90的徑向內側伸出(突出)。此外,在內側側壁部32B形成有使管38的內部和密閉空間36的內部連通的連通孔。由此,在變形2中,因為管38不向內鍋90的徑向外側突出,所以能夠抑制內鍋90的外觀的設計感降低。另外,通過管38不向內鍋90的徑向外側突出,能夠容易將內鍋90應用於現有的電飯煲。因此,能夠提高內鍋90的通用性。此外,在變形2中,也與變形1同樣,也可以將多個管38設置於內側容器32。That is, as shown in Fig. 15, in the modification 2, the tube 38 is provided in the inner container 32. Specifically, the tube 38 projects (projects) from the inner side wall portion 32B of the inner container 32 toward the radially inner side of the inner pot 90. Further, a communication hole that communicates the inside of the tube 38 and the inside of the sealed space 36 is formed in the inner side wall portion 32B. Thus, in the deformation 2, since the tube 38 does not protrude outward in the radial direction of the inner pot 90, it is possible to suppress a decrease in the design feeling of the appearance of the inner pot 90. Further, since the tube 38 does not protrude outward in the radial direction of the inner pot 90, the inner pot 90 can be easily applied to the existing rice cooker. Therefore, the versatility of the inner pot 90 can be improved. Further, in the modification 2, similarly to the modification 1, a plurality of tubes 38 may be provided in the inner container 32.

另外,在變形2中,以管38位於比煮熟後的米(內鍋90的最大煮飯量的米)更靠上側的方式設定管38的上下方向的位置。因此,即使將管38製成設置於內側容器32的內側側壁部32B的結構,也能夠抑制煮熟後的米和管38的接觸。Further, in the second modification, the position of the tube 38 in the vertical direction is set such that the tube 38 is located above the cooked rice (meter of the maximum rice cooking amount of the inner pot 90). Therefore, even if the tube 38 is configured to be disposed on the inner side wall portion 32B of the inner container 32, the contact between the cooked rice and the tube 38 can be suppressed.

此外,在第一實施方式(包含變形例)~第三實施方式的內鍋30、60、90、100中,作為工作液40,使用水,但向密閉空間36內注入的工作液40的種類不局限於此。例如也可以將工作液40設為乙二醇、矽油、丙二醇等。In the inner pots 30, 60, 90, and 100 of the first embodiment (including the modified examples) to the third embodiment, water is used as the working fluid 40, but the type of the working fluid 40 injected into the sealed space 36 is used. Not limited to this. For example, the working fluid 40 may be ethylene glycol, eucalyptus oil, propylene glycol or the like.

另外,在第一實施方式~第三實施方式中,密閉空間36的底部36A的高度尺寸H設定為4mm,但從不變更內鍋30的大小而加大內鍋30的容量之類的觀點來看時,考慮使內側底壁部32A下降而使高度尺寸H進一步降低。而且,在使高度尺寸H進一步降低的情況下(例如,製成3mm以下的情況下),優選將密閉空間36的工作液40相對於底部36A的體積比率設定為10vol%~80vol%,特別優選設定為30vol%~80vol%。In the first embodiment to the third embodiment, the height H of the bottom portion 36A of the sealed space 36 is set to 4 mm, but the size of the inner pot 30 is not changed, and the capacity of the inner pot 30 is increased. In view of this, it is considered that the inner bottom wall portion 32A is lowered to further lower the height dimension H. Further, when the height dimension H is further lowered (for example, when it is made 3 mm or less), it is preferable to set the volume ratio of the working fluid 40 of the sealed space 36 to the bottom portion 36A to 10 vol% to 80 vol%, and particularly preferably It is set to 30 vol% to 80 vol%.

另一方面,為了更高效地將內鍋30的內側側壁部32B加熱,在使高度尺寸H比本實施方式的4mm還高的情況下,優選將密閉空間36的工作液40相對於底部36A的體積比率設定為5vol%~80vol%,特別優選設定為8vol%~30vol%。On the other hand, in order to heat the inner side wall portion 32B of the inner pot 30 more efficiently, when the height dimension H is higher than 4 mm of the present embodiment, it is preferable to make the working fluid 40 of the sealed space 36 with respect to the bottom portion 36A. The volume ratio is set to 5 vol% to 80 vol%, and particularly preferably set to 8 vol% to 30 vol%.

另外,在第一實施方式(包含變形例)~第三實施方式的內鍋30、60、90、100中,因為當將內鍋30、60、90、100加熱時,密閉空間36的內壓就升高,所以也可以將用於防止密閉空間36的內壓的异常上升的安全機構設置於內鍋30、60、90、100。下面,在第16圖中利用第二實施方式的內鍋90對該點進行說明。Further, in the inner pots 30, 60, 90, 100 of the first embodiment (including the modified examples) to the third embodiment, since the inner pots 30, 60, 90, 100 are heated, the internal pressure of the sealed space 36 Since it is raised, a safety mechanism for preventing an abnormal rise in the internal pressure of the sealed space 36 may be provided in the inner pots 30, 60, 90, and 100. Next, this point will be described using the inner pot 90 of the second embodiment in Fig. 16.

如第16圖(A)及(B)所示,在內側容器32的內側角部32C的內周面上形成有構成安全機構的缺口(notch)32H,缺口32H沿著相對於內側容器32的周向正交的方向形成為直線狀。該缺口32H形成為向內側容器32的徑向內側敞開的大致V字形槽狀,將內側容器32的形成有缺口32H的部位設為薄壁部32I(廣義地說,是作為“脆弱部”而掌握的要素)。因此,在內側容器32中,薄壁部32I的強度構成為比其他部分的強度低。As shown in Fig. 16 (A) and (B), a notch 32H constituting a safety mechanism is formed on the inner peripheral surface of the inner corner portion 32C of the inner container 32, and the notch 32H is along the inner container 32. The direction orthogonal to the circumferential direction is formed in a straight line shape. The notch 32H is formed in a substantially V-shaped groove shape that is open to the inside in the radial direction of the inner container 32, and the portion of the inner container 32 where the notch 32H is formed is the thin portion 32I (in a broad sense, it is a "fragile portion"). The elements of mastery). Therefore, in the inner container 32, the strength of the thin portion 32I is configured to be lower than the strength of the other portions.

另外,以在密閉空間36的內壓大於規定值時薄壁部32I就會斷裂的方式設定缺口32H的形狀(深度及寬度)。由此,在內鍋90的加熱時,當密閉空間36的內壓大於規定值時,薄壁部32I就會斷裂,密閉空間36內的蒸氣就從該斷裂部向內鍋90的下部(詳細地說,配置米的部分)噴射。因此,能夠使該蒸氣經由內鍋90的開口部從電飯煲10的蓋部24的蒸氣塔逃逸。因此,能夠抑制密閉空間36的內壓的异常上升,並且能夠提高電飯煲10的安全性。In addition, the shape (depth and width) of the notch 32H is set such that the thin portion 32I is broken when the internal pressure of the sealed space 36 is larger than a predetermined value. Therefore, when the internal pressure of the sealed space 36 is larger than a predetermined value during heating of the inner pot 90, the thin portion 32I is broken, and the vapor in the sealed space 36 is directed from the broken portion to the lower portion of the inner pot 90 (detailed Say, configure the part of the meter) to spray. Therefore, the vapor can escape from the vapor tower of the lid portion 24 of the rice cooker 10 through the opening of the inner pot 90. Therefore, it is possible to suppress an abnormal rise in the internal pressure of the sealed space 36, and it is possible to improve the safety of the rice cooker 10.

此外,在第16圖(A)及(B)所示的例子中,缺口32H沿著相對於內鍋90的周向正交的方向而直線狀地延伸,但缺口32H的延伸方向可任意設定。例如,也可以以沿內鍋90的周向延伸的方式形成缺口32H,還可以以相對於內鍋90的周向而傾斜延伸的方式形成缺口32H。Further, in the example shown in FIGS. 16(A) and 16(B), the notch 32H linearly extends in a direction orthogonal to the circumferential direction of the inner pot 90, but the extending direction of the notch 32H can be arbitrarily set. For example, the notch 32H may be formed to extend in the circumferential direction of the inner pot 90, and the notch 32H may be formed to extend obliquely with respect to the circumferential direction of the inner pot 90.

另外,在第16圖(A)及(B)所示的例子中,在內鍋90內形成有1條缺口32H,但也可以將缺口32H的條數設為多條。Further, in the example shown in FIGS. 16(A) and (B), one notch 32H is formed in the inner pot 90, but the number of the notches 32H may be plural.

進而,在第16圖(A)及(B)所示的例子中,缺口32H的截面形狀形成為大致V字形槽狀,但缺口32H的截面形狀可適當變更。例如,也可以將缺口32H的截面形狀形成為大致半圓形槽狀。Further, in the example shown in FIGS. 16(A) and 16(B), the cross-sectional shape of the notch 32H is formed in a substantially V-shaped groove shape, but the cross-sectional shape of the notch 32H can be appropriately changed. For example, the cross-sectional shape of the notch 32H may be formed into a substantially semicircular groove shape.

另外,在上述安全機構中,薄壁部32I形成於內側容器32,但形成薄壁部32I的場所可任意設定。Further, in the above-described safety mechanism, the thin portion 32I is formed in the inner container 32, but the location where the thin portion 32I is formed can be arbitrarily set.

例如,也可以在管38上形成缺口32H,並在管38上形成薄壁部32I。即,如第16圖(C)所示,也可以在管38的外周部形成單個或多個(在第16圖(C)所示的例子中,2個)缺口32H,並在管38上形成薄壁部32I。For example, a notch 32H may be formed in the tube 38, and a thin portion 32I may be formed on the tube 38. That is, as shown in Fig. 16(C), a single or a plurality of (two in the example shown in Fig. 16(C)) notches 32H may be formed on the outer peripheral portion of the tube 38, and on the tube 38. A thin portion 32I is formed.

另外,例如,也可以將薄壁部32I形成於內側側壁部32B的上部(優選比內鍋90的最大煮飯量的米更靠上側的位置)。在這種情況下,薄壁部32I配置於內鍋90的遠離底部(即,在內鍋90中,被加熱的部分)的位置。由此,能夠抑制薄壁部32I的劣化。特別是通過將薄壁部32I配置於比內鍋90的最大煮飯量的米更靠上側的位置,能夠抑制煮飯後與薄壁部32I的接觸。Further, for example, the thin portion 32I may be formed on the upper portion of the inner side wall portion 32B (preferably above the rice of the maximum cooking amount of the inner pot 90). In this case, the thin portion 32I is disposed at a position away from the bottom portion of the inner pot 90 (i.e., the heated portion in the inner pot 90). Thereby, deterioration of the thin portion 32I can be suppressed. In particular, by arranging the thin portion 32I at a position above the rice of the maximum cooking amount of the inner pot 90, contact with the thin portion 32I after rice cooking can be suppressed.

另外,在上述安全機構中,薄壁部32I形成於內側容器32(內側側壁部32B),但也可以將薄壁部32I形成於外側容器34(外側側壁部34B)來代替形成於內側容器32。另外,也可以將薄壁部32I形成於內側容器32及外側容器34。而且,在將薄壁部32I形成於內側容器32及外側容器34的情況下,例如,在密閉空間36的內壓异常上升時,即使在一個薄壁部32I未斷裂時,也能夠使另一個薄壁部32I斷裂,而使蒸氣向密閉空間36的外部逃逸。由此,能夠進一步提高電飯煲10的安全性。Further, in the above-described safety mechanism, the thin portion 32I is formed in the inner container 32 (inner side wall portion 32B), but the thin portion 32I may be formed in the outer container 34 (outer side wall portion 34B) instead of being formed in the inner container 32. . Further, the thin portion 32I may be formed in the inner container 32 and the outer container 34. Further, when the thin portion 32I is formed in the inner container 32 and the outer container 34, for example, when the internal pressure of the sealed space 36 rises abnormally, even when one thin portion 32I is not broken, the other can be made The thin portion 32I is broken to allow the vapor to escape to the outside of the sealed space 36. Thereby, the safety of the rice cooker 10 can be further improved.

另外,當從減薄內側容器32的板厚而形成薄壁部32I之類的觀點來看時,也可以在內側容器32的衝壓加工時,將內側容器32(內側側壁部32B)的一部分壓扁,而形成薄壁部32I。例如,雖然省略了圖示,但也可以在內側側壁部32B的內周面或外周面上形成向板厚方向內側壓扁了的圓形狀的凹部,並以形成有該凹部的部分為薄壁部32I。In addition, when the thin portion 32I is formed from the thickness of the inner container 32, a part of the inner container 32 (the inner side wall portion 32B) may be pressed during the press working of the inner container 32. It is flat and forms a thin portion 32I. For example, although the illustration is omitted, a circular recess that is flattened toward the inner side in the thickness direction may be formed on the inner peripheral surface or the outer peripheral surface of the inner side wall portion 32B, and the portion in which the recess is formed may be thin. Department 32I.

另外,在內側容器32的衝壓加工時,也可以對內側容器32(內側側壁部32B)的局部進行半沖切加工而形成薄壁部32I。例如,雖然省略了圖示,但也可以對內側側壁部32B的局部向徑向內側或徑向外側進行半沖切,以半沖切後的部分的邊界部為薄壁部32I。Further, at the time of press working of the inner container 32, a part of the inner container 32 (inner side wall portion 32B) may be half-punched to form a thin portion 32I. For example, although not shown in the drawings, a part of the inner side wall portion 32B may be half-punched to the radially inner side or the radially outer side, and the boundary portion of the half-punched portion may be the thin portion 32I.

由此,能夠容易形成薄壁部32I,並且能夠價廉物美地製作內鍋90。此外,與上述同樣,也可以將上述凹部或半沖切部形成於內側容器32及外側容器34中的至少一方,凹部或半沖切部的位置可任意設定。Thereby, the thin portion 32I can be easily formed, and the inner pot 90 can be produced inexpensively. Further, similarly to the above, the concave portion or the half-cut portion may be formed in at least one of the inner container 32 and the outer container 34, and the position of the concave portion or the half-cut portion may be arbitrarily set.

另外,當從在密閉空間36的內壓异常上升時,使蒸氣向密閉空間36的外部逃逸之類的觀點來看時,也可以采用在內側容器32或外側容器34上設置安全閥(作為一例,彈簧式安全閥)的結構。在這種情況下,在密閉空間36的內壓异常上升時,不破壞內鍋90,就能夠使蒸氣向密閉空間36的外部逃逸。In addition, when the internal pressure of the sealed space 36 rises abnormally and the vapor escapes to the outside of the sealed space 36, a safety valve may be provided in the inner container 32 or the outer container 34 (as an example). , the structure of the spring type safety valve). In this case, when the internal pressure of the sealed space 36 rises abnormally, the vapor can escape to the outside of the sealed space 36 without damaging the inner pot 90.

另外,在第一實施方式中,在內鍋30上設有連結銷42,並通過連結銷42將內側底壁部32A及外側底壁部34A連結在一起。也可以取而代之地,如第17圖所示,在內鍋30中,省略連結銷42(中心銷44及外周銷46),製成不將內側底壁部32A及外側底壁部34A連結的結構。Further, in the first embodiment, the inner pot 30 is provided with a coupling pin 42, and the inner bottom wall portion 32A and the outer bottom wall portion 34A are coupled by the joint pin 42. Alternatively, as shown in Fig. 17, in the inner pot 30, the joint pin 42 (the center pin 44 and the outer peripheral pin 46) is omitted, and the inner bottom wall portion 32A and the outer bottom wall portion 34A are not connected to each other. .

另外,雖然省略了圖示,但在第一實施方式(包含變形例)~第三實施方式的內鍋30、60、90、100中,也可以在內側容器32的內側側壁部32B和外側容器34的外側側壁部34B之間設置連結銷42,並通過連結銷42將內側側壁部32B和外側側壁部34B連結。在這種情況下,以內鍋30、60、90、100的徑向為軸向來配置連結銷42,通過連結銷42,將內側側壁部32B和外側側壁部34B連結。由此,能夠抑制內鍋30、60、90、100的加熱時的內側側壁部32B及外側側壁部34B的變形。In addition, in the inner pots 30, 60, 90, and 100 of the first embodiment (including the modified examples) to the third embodiment, the inner side wall portion 32B and the outer side container of the inner container 32 may be omitted. A coupling pin 42 is provided between the outer side wall portions 34B of 34, and the inner side wall portion 32B and the outer side wall portion 34B are coupled by a coupling pin 42. In this case, the joint pin 42 is disposed in the radial direction of the inner pots 30, 60, 90, and 100 in the axial direction, and the inner side wall portion 32B and the outer side wall portion 34B are coupled by the joint pin 42. Thereby, deformation of the inner side wall portion 32B and the outer side wall portion 34B during heating of the inner pots 30, 60, 90, and 100 can be suppressed.

進而,在這種情況下,也可以將多個連結銷42設置於內側容器32的內側側壁部32B和外側容器34的外側側壁部34B之間,並且在內鍋30、60、90、100的周向上以等間隔的方式配置。由此,既能夠抑制內鍋30、60、90、100的加熱時的內側側壁部32B及外側側壁部34B的變形,又能夠實現密閉空間36的內側側壁部32B和外側側壁部34B之間的間隙的均勻化。其結果是,在內鍋30、60、90、100的周向上,能夠抑制在內側側壁部32B和外側側壁部34B之間上升的蒸氣量的不均。因此,在內側容器32的周向上,能夠將內側側壁部32B均等地加熱。Further, in this case, a plurality of coupling pins 42 may be provided between the inner side wall portion 32B of the inner container 32 and the outer side wall portion 34B of the outer container 34, and the inner pots 30, 60, 90, 100 The circumferential direction is configured at equal intervals. Thereby, deformation of the inner side wall portion 32B and the outer side wall portion 34B during heating of the inner pans 30, 60, 90, and 100 can be suppressed, and between the inner side wall portion 32B and the outer side wall portion 34B of the sealed space 36 can be realized. Homogenization of the gap. As a result, in the circumferential direction of the inner pots 30, 60, 90, and 100, unevenness in the amount of vapor rising between the inner side wall portion 32B and the outer side wall portion 34B can be suppressed. Therefore, the inner side wall portion 32B can be uniformly heated in the circumferential direction of the inner container 32.

另外,在第一實施方式(包含變形例)~第三實施方式中,內鍋30、60、90、100包含罩50而構成,但在內鍋30、60、90、100中,也可以采用省略了罩50的結構。Further, in the first embodiment (including modifications) to the third embodiment, the inner pots 30, 60, 90, and 100 include the cover 50, but the inner pots 30, 60, 90, and 100 may be used. The structure of the cover 50 is omitted.

另外,就第一實施方式(包含變形例)~第三實施方式的罩50而言,覆蓋內鍋30、60、90、100的第一凸緣32D及第二凸緣34D的部分和覆蓋管38的部分雙方都形成為環狀。也可以取而代之地,將罩50形成為由覆蓋第一凸緣32D及第二凸緣34D的整個一周的環狀部分和僅覆蓋管38的部分(即,上述的管罩110)製成一體而成的形狀。在這種情況下,能夠不能辨認地覆蓋第一凸緣32D及第二凸緣34D的焊接部位、及管38。Further, in the cover 50 of the first embodiment (including the modified example) to the third embodiment, the portion covering the first flange 32D and the second flange 34D of the inner pots 30, 60, 90, 100 and the covering tube Part of the 38 is formed into a ring shape. Alternatively, the cover 50 may be formed to be integrally formed by an annular portion covering the entire circumference of the first flange 32D and the second flange 34D and a portion covering only the tube 38 (i.e., the above-described tube cover 110). Into the shape. In this case, the welded portion of the first flange 32D and the second flange 34D and the tube 38 can be covered in an unrecognizable manner.

另外,在第一實施方式(包含變形例)的內鍋30(60)中,在內鍋30(60)開口部,內側容器32的第一凸緣32D以捲繞於外側容器34的第二凸緣34D的上下的方式回折,來確保密閉空間36的氣密性,但確保密閉空間36的氣密性的構造不局限於此。Further, in the inner pot 30 (60) of the first embodiment (including the modified example), the first flange 32D of the inner container 32 is wound around the outer container 34 in the opening portion of the inner pot 30 (60). The flange 34D is folded back and forth to ensure the airtightness of the sealed space 36. However, the structure for ensuring the airtightness of the sealed space 36 is not limited thereto.

例如,如第18圖所示,第二凸緣34D也可以以向內鍋30、60的徑向內側回折180度的方式形成,而內側容器32的第一凸緣32D以捲繞於回折後的第二凸緣34D的方式構成。即,在這種情況下,第二凸緣34D呈現上下重合的重合構造。進而,第一凸緣32D的上凸緣部32D1及下凸緣部32D2將呈現重合構造的第二凸緣34D上下壓接。由此,既能夠確保密閉空間36的氣密性,又能夠提高內鍋30(60)的開口部的剛性。For example, as shown in Fig. 18, the second flange 34D may be formed to be folded back 180 degrees toward the radially inner side of the inner pots 30, 60, and the first flange 32D of the inner container 32 is wound after folding. The second flange 34D is constructed in a manner. That is, in this case, the second flange 34D has a superposed structure in which the upper and lower sides are overlapped. Further, the upper flange portion 32D1 and the lower flange portion 32D2 of the first flange 32D press the second flange 34D having the overlapping structure up and down. Thereby, the airtightness of the sealed space 36 can be ensured, and the rigidity of the opening of the inner pot 30 (60) can be improved.

另外,在第一實施方式(包含變形例)~第三實施方式中,對內側容器32的內周面實施了特氟隆加工,但對內側容器32的內周面的表面處理不局限於此。例如,也可以對內側容器32的內周面的全部或一部分(作為一例,僅內側底壁部32A或僅內側側壁部32B)實施粗加工,而將內側容器32的內周面形成為凹凸狀。例如,也可以對內側容器32的內周面實施金剛石塗敷處理。另外,例如也可以對內側容器32的內周面實施噴砂處理,在噴砂處理後,實施特氟隆加工。由此,在內側容器32的內周面形成凹凸。因此,在煮米飯時,通過該凹凸,在內鍋內產生比較細的氣泡。其結果是,通過該氣泡的產生,能夠均勻地將內鍋內的米加熱。Further, in the first embodiment (including the modified examples) to the third embodiment, the inner peripheral surface of the inner container 32 is subjected to Teflon processing, but the surface treatment of the inner peripheral surface of the inner container 32 is not limited to this. . For example, all or a part of the inner circumferential surface of the inner container 32 (for example, only the inner bottom wall portion 32A or only the inner side wall portion 32B) may be roughened, and the inner circumferential surface of the inner container 32 may be formed in a concavo-convex shape. . For example, the inner peripheral surface of the inner container 32 may be subjected to a diamond coating treatment. Further, for example, the inner peripheral surface of the inner container 32 may be subjected to sandblasting, and after the sandblasting, Teflon processing may be performed. Thereby, irregularities are formed on the inner circumferential surface of the inner container 32. Therefore, when the rice is cooked, relatively fine bubbles are generated in the inner pot by the unevenness. As a result, the rice in the inner pot can be uniformly heated by the generation of the bubbles.

另外,在第一實施方式(包含變形例)~第三實施方式中,為了使在密閉空間36內產生的蒸氣良好地上升,對內側容器32的外側面及外側容器34的內側面實施了鏡面處理,但從在內鍋的加熱時易在密閉空間36內產生蒸氣之類的觀點來看時,也可以對內側容器32的外側面及外側容器34的內側面實施粗加工。例如,也可以對內側容器32的外側面及外側容器34的內側面實施噴砂處理,從而將內側容器32的外側面及外側容器34的內側面形成為凹凸狀。Further, in the first embodiment (including the modified example) to the third embodiment, in order to raise the vapor generated in the sealed space 36 well, the outer surface of the inner container 32 and the inner surface of the outer container 34 are mirror-finished. Although the treatment is performed, it is also possible to roughen the outer side surface of the inner container 32 and the inner side surface of the outer container 34 from the viewpoint of easily generating vapor in the sealed space 36 during heating of the inner pot. For example, the outer side surface of the inner container 32 and the inner side surface of the outer container 34 may be sandblasted to form the outer side surface of the inner container 32 and the inner side surface of the outer container 34 in an uneven shape.

另外,在第一實施方式(包含變形例)~第三實施方式的內鍋30、60、90、100中,內側容器32的板厚和外側容器34的板厚設定為相同,但也可以將內側容器32的板厚和外側容器34的板厚設定為不同的板厚。例如,也可以將內側容器32的板厚設定為比外側容器34的板厚薄,而以促進內側容器32的加熱的方式構成。另外,通過將內側容器32的板厚設定為比外側容器34的板厚薄,能夠使密閉空間36內的由工作液40氣化而成的蒸氣的熱量在內鍋30、60、90、100的內側側壁部32B高效地向內鍋30、60、90、100的內部散熱。Further, in the inner pots 30, 60, 90, and 100 of the first embodiment (including the modified examples) to the third embodiment, the thickness of the inner container 32 and the thickness of the outer container 34 are set to be the same, but The thickness of the inner container 32 and the thickness of the outer container 34 are set to be different. For example, the thickness of the inner container 32 may be set to be smaller than the thickness of the outer container 34, and may be configured to promote heating of the inner container 32. Further, by setting the thickness of the inner container 32 to be smaller than the thickness of the outer container 34, the heat of the vapor vaporized by the working fluid 40 in the sealed space 36 can be made to the inner pots 30, 60, 90, 100. The inner side wall portion 32B efficiently dissipates heat to the inside of the inner pots 30, 60, 90, 100.

另外,在第一實施方式(包含變形例)~第三實施方式中,內側容器32及外側容器34的板厚在整體上設定為均勻(恒定),但也可以將內側容器32及外側容器34的板厚設定為不均勻。例如,在內側容器32中,也可以將內側側壁部32B的板厚設定為比內側底壁部32A的板厚薄,以促進對內側側壁部32B的加熱的方式構成。在這種情況下,內側容器32的內側角部32C的板厚也可以以隨著從內側底壁部32A向內側側壁部32B而逐漸變薄的方式設定。Further, in the first embodiment (including the modified examples) to the third embodiment, the thicknesses of the inner container 32 and the outer container 34 are set to be uniform (constant) as a whole, but the inner container 32 and the outer container 34 may be provided. The plate thickness is set to be uneven. For example, in the inner container 32, the thickness of the inner side wall portion 32B may be set to be smaller than the thickness of the inner bottom wall portion 32A to promote heating of the inner side wall portion 32B. In this case, the thickness of the inner corner portion 32C of the inner container 32 may be set to gradually become thinner from the inner bottom wall portion 32A toward the inner side wall portion 32B.

另外,在第一實施方式(包含變形例)~第三實施方式中,內側容器32及外側容器34由磁性體(不銹鋼)構成。也可以取而代之地,由銅或鋁等高導熱體構成內側容器32。在這種情況下,也在內鍋30、60、90、100的加熱時,能夠高效地將內側容器32加熱。Further, in the first embodiment (including the modified examples) to the third embodiment, the inner container 32 and the outer container 34 are made of a magnetic material (stainless steel). Alternatively, the inner container 32 may be made of a high thermal conductor such as copper or aluminum. In this case as well, when the inner pans 30, 60, 90, and 100 are heated, the inner container 32 can be efficiently heated.

另外,也可以使用表面預塗敷有氟系樹脂的預塗鋼板等,將內側容器32成型。由此,能夠實現內鍋30、60、90、100的製造工序的縮短化。Further, the inner container 32 may be molded by using a precoated steel sheet or the like whose surface is precoated with a fluorine resin. Thereby, the manufacturing process of the inner pots 30, 60, 90, and 100 can be shortened.

另外,在第一實施方式(包含變形例)~第三實施方式中,內鍋30、60、90、100應用於IH式電飯煲10,但應用內鍋30、60、90、100的電飯煲不局限於此。例如,也可以將電飯煲10的加熱部16變更為加熱器,通過該加熱器,將內鍋30、60、90、100加熱。Further, in the first embodiment (including modifications) to the third embodiment, the inner pots 30, 60, 90, 100 are applied to the IH type rice cooker 10, but the rice cookers 30, 60, 90, 100 are not used. Limited to this. For example, the heating unit 16 of the rice cooker 10 may be changed to a heater, and the inner pots 30, 60, 90, and 100 may be heated by the heater.

(附注)(note)

以上,本發明在呈現內部具有密閉空間的雙層壁構造的加熱烹調器中,用高效地將加熱烹調器的內側的側壁加熱之類的觀點進行了說明,但從其他觀點來看,可如下那樣理解。As described above, the present invention has been described in terms of efficiently heating the side wall of the heating cooker in a heating cooker having a double-wall structure having a closed space therein, but from another viewpoint, it may be as follows I understand that.

即,在背景技術記載的加熱烹調器中,當向密閉空間內注入了工作液,且將加熱烹調器的底部加熱時,工作液就會沸騰,從工作液氣化而成的蒸氣沿著密閉空間的側部上升。由此,加熱烹調器的內側的側壁通過蒸氣來加熱。進而,加熱了側壁的蒸氣進行冷凝,變成液體作為工作液,變成了液體的工作液通過自重而下降,返回到密閉空間的底部內。而且,在工作液中,通過重複進行上述的相變周期,加熱烹調器的側部被加熱。In other words, in the heating cooker described in the background art, when the working fluid is injected into the sealed space and the bottom of the heating cooker is heated, the working fluid boils, and the vapor vaporized from the working fluid is sealed. The side of the space rises. Thereby, the side wall of the inner side of the heating cooker is heated by steam. Further, the vapor of the side wall is heated and condensed to become a liquid as a working fluid, and the working fluid which becomes a liquid falls by its own weight, and returns to the bottom of the sealed space. Further, in the working fluid, the side portion of the heating cooker is heated by repeating the above-described phase change cycle.

但是,在上述加熱烹調器中,在以下所示的方面,還有改善的餘地。即,在上述加熱烹調器中,如上所述,當將加熱烹調器的底部加熱時,從工作液氣化而成的蒸氣就沿著密閉空間的側部上升。而且,通過持續將加熱烹調器加熱,密閉空間內的氣壓(壓力)會上升。因此,密閉空間內的底部就膨脹,加熱烹調器的底部有可能變形。因此,在內部具有密閉空間的加熱烹調器中,希望製成能夠抑制加熱烹調器的由膨脹引起的變形的構造。However, in the above-described heating cooker, there is still room for improvement in the following aspects. In other words, in the above-described heating cooker, as described above, when the bottom of the heating cooker is heated, the vapor vaporized from the working fluid rises along the side portion of the sealed space. Further, by continuously heating the heating cooker, the air pressure (pressure) in the sealed space rises. Therefore, the bottom portion in the closed space expands, and the bottom of the heating cooker may be deformed. Therefore, in a heating cooker having a sealed space therein, it is desirable to have a structure capable of suppressing deformation of the heating cooker due to expansion.

本發明是考慮到上述事實而完成的,其目的在於,提供一種能夠抑制加熱時的膨脹的加熱烹調器。The present invention has been made in view of the above circumstances, and an object thereof is to provide a heating cooker capable of suppressing expansion at the time of heating.

解決上述課題的第一形態提供一種加熱烹調器,其形成為有底筒狀,呈現在內部具有密閉空間的雙層壁構造,其具備:有底筒狀的內側容器,其構成上述加熱烹調器的內側部分;有底筒狀的外側容器,其構成上述加熱烹調器的外側部分;工作液,其被注入至上述密閉空間內;連結部,其設置於上述密閉空間內,將上述內側容器的內側底壁部與上述外側容器的外側底壁部進行連結。A first aspect of the present invention provides a heating cooker which is formed in a bottomed cylindrical shape and has a double-wall structure having a sealed space therein, and includes a bottomed cylindrical inner container constituting the heating cooker An inner side portion; a bottomed cylindrical outer container constituting an outer portion of the heating cooker; a working fluid injected into the sealed space; and a connecting portion disposed in the sealed space to allow the inner container The inner bottom wall portion is coupled to the outer bottom wall portion of the outer container.

解決上述課題的第二形態在第一形態的加熱烹調器的基礎上,上述連結部由沿上述加熱烹調器的軸向延伸的連結銷構成。According to a second aspect of the invention, in the heating cooker according to the first aspect, the connecting portion is formed by a connecting pin extending in an axial direction of the heating cooker.

解決上述課題的第三形態在第二形態的加熱烹調器的基礎上,在從上述加熱烹調器的開口側看的俯視時,上述連結銷配置於上述加熱烹調器的中心部。According to a third aspect of the present invention, in the heating cooker according to the second aspect, the connecting pin is disposed at a center portion of the heating cooker in a plan view as seen from an opening side of the heating cooker.

解決上述課題的第四形態在第一形態的加熱烹調器的基礎上,在從上述加熱烹調器的開口側看的俯視時,上述連結部從上述加熱烹調器的中心放射狀地伸出。According to a fourth aspect of the invention, in the heating cooker according to the first aspect of the invention, the connecting portion radially protrudes from a center of the heating cooker when viewed in a plan view from an opening side of the heating cooker.

解決上述課題的第五形態在第四形態的加熱烹調器的基礎上,在上述連結部的下端部,形成有使由上述連結部區劃的上述密閉空間進行連通的連通孔。According to a fifth aspect of the present invention, in the heating cooker according to the fourth aspect of the present invention, a communication hole that allows the sealed space partitioned by the connecting portion to communicate with each other is formed at a lower end portion of the connecting portion.

綜上所述,本發明所揭露之技術手段確能有效解決習知等問題,並達致預期之目的與功效,且申請前未見諸於刊物、未曾公開使用且具長遠進步性,誠屬專利法所稱之發明無誤,爰依法提出申請,懇祈 鈞上惠予詳審並賜准發明專利,至感德馨。In summary, the technical means disclosed by the present invention can effectively solve the problems of the prior knowledge, achieve the intended purpose and efficacy, and are not found in the publication before publication, have not been publicly used, and have long-term progress, The invention referred to in the Patent Law is correct, and the application is filed according to law, and the company is invited to give a detailed examination and grant a patent for invention.

惟以上所述者,僅為本發明之數種較佳實施例,當不能以此限定本發明實施之範圍,即大凡依本發明申請專利範圍及發明說明書內容所作之等效變化與修飾,皆應仍屬本發明專利涵蓋之範圍內。The above is only the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, that is, the equivalent changes and modifications made by the scope of the invention and the contents of the invention are all It should remain within the scope of this invention.

〔本發明〕〔this invention〕

10‧‧‧電飯煲 10‧‧‧Electric rice cooker

12‧‧‧電飯煲主體 12‧‧‧ rice cooker main body

14‧‧‧內鍋收納部 14‧‧‧Inner pot storage

16‧‧‧加熱部 16‧‧‧ heating department

18‧‧‧電源部 18‧‧‧Power Supply Department

20‧‧‧溫度傳感器 20‧‧‧ Temperature sensor

22‧‧‧控制部 22‧‧‧Control Department

24‧‧‧蓋部 24‧‧‧ 盖部

26‧‧‧鉸鏈機構 26‧‧‧Hinged mechanism

30‧‧‧內鍋(加熱烹調器) 30‧‧‧Inner pot (heating cooker)

32‧‧‧內側容器 32‧‧‧ inside container

32A‧‧‧內側底壁部 32A‧‧‧Inside bottom wall

32B‧‧‧內側側壁部 32B‧‧‧Inside side wall

32C‧‧‧內側角部 32C‧‧‧ inside corner

32D‧‧‧第一凸緣 32D‧‧‧First flange

32D1‧‧‧上凸緣部 32D1‧‧‧Upper flange

32D2‧‧‧下凸緣部 32D2‧‧‧ lower flange

32G‧‧‧拉深部 32G‧‧‧Drawing Department

32H‧‧‧缺口 32H‧‧‧ gap

32I‧‧‧薄壁部 32I‧‧‧ Thin wall

34‧‧‧外側容器 34‧‧‧Outside container

34A‧‧‧外側底壁部 34A‧‧‧Outer bottom wall

34B‧‧‧外側側壁部 34B‧‧‧Outside side wall

34C‧‧‧外側角部 34C‧‧‧Outer corner

34D‧‧‧第二凸緣 34D‧‧‧second flange

34E‧‧‧貫通孔 34E‧‧‧through hole

34F‧‧‧連結凹部 34F‧‧‧ Connection recess

34G‧‧‧拉深部 34G‧‧‧Drawing Department

36‧‧‧密閉空間 36‧‧‧Confined space

36A‧‧‧底部 36A‧‧‧ bottom

36B‧‧‧底面 36B‧‧‧ bottom

36C‧‧‧側部 36C‧‧‧ side

38‧‧‧管 38‧‧‧ tube

38A‧‧‧鉚接部 38A‧‧‧Riveting

40‧‧‧工作液 40‧‧‧ working fluid

42‧‧‧連結銷 42‧‧‧Links

44‧‧‧中心銷 44‧‧‧Center Sales

46‧‧‧外周銷 46‧‧‧Weekly sales

50‧‧‧罩 50‧‧ hood

52‧‧‧罩部件 52‧‧‧ Cover parts

52A‧‧‧外周壁 52A‧‧‧peripheral wall

52B‧‧‧上壁 52B‧‧‧Upper wall

52C‧‧‧下壁 52C‧‧‧Bottom wall

52D‧‧‧中間壁 52D‧‧‧Intermediate wall

52E‧‧‧第一收納部 52E‧‧‧First Storage Department

52F‧‧‧第二收納部 52F‧‧‧Second Storage Department

52G‧‧‧扣 52G‧‧‧ buckle

52H‧‧‧卡合片 52H‧‧‧Clocks

52J‧‧‧卡合孔 52J‧‧‧ snap hole

60‧‧‧內鍋(加熱烹調器) 60‧‧‧ inner pot (heating cooker)

62‧‧‧底板 62‧‧‧floor

70‧‧‧連結板 70‧‧‧Link board

70A‧‧‧連結片 70A‧‧‧Links

70B‧‧‧連通孔 70B‧‧‧Connected holes

72‧‧‧第一連結板 72‧‧‧First link board

74‧‧‧第二連結板 74‧‧‧Second link board

80‧‧‧中間板 80‧‧‧Intermediate board

90‧‧‧內鍋(加熱烹調器) 90‧‧‧ inner pot (heating cooker)

92‧‧‧密封材料 92‧‧‧ Sealing material

100‧‧‧內鍋(加熱烹調器) 100‧‧‧ inner pot (heating cooker)

110‧‧‧管罩 110‧‧‧ tube cover

110A‧‧‧凹部 110A‧‧‧ recess

H‧‧‧密閉空間的底部的高度尺寸 H‧‧‧ Height dimensions at the bottom of confined spaces

R‧‧‧內側角部的半徑 R‧‧‧ Radius of the inside corner

W‧‧‧密閉空間的寬度尺寸 W‧‧‧width dimensions of confined spaces

第1圖是第一實施方式的內鍋的縱剖面圖(第2圖的1-1線放大剖面圖)。Fig. 1 is a longitudinal sectional view of the inner pot of the first embodiment (an enlarged cross-sectional view taken along line 1-1 of Fig. 2).

第2圖是從上側看第一實施方式的內鍋所得的俯視圖。 Fig. 2 is a plan view of the inner pot of the first embodiment as seen from the upper side.

第3圖是放大表示第1圖所示的內鍋的一半的放大剖面圖。 Fig. 3 is an enlarged cross-sectional view showing, in an enlarged manner, a half of the inner pot shown in Fig. 1.

第4圖是表示第1圖所示的罩的從上側看到的局部剖切後的俯視圖。 Fig. 4 is a partially cutaway plan view showing the cover shown in Fig. 1 as seen from the upper side.

第5圖是表示應用了第1圖所示的內鍋的電飯煲的縱剖面圖。 Fig. 5 is a longitudinal sectional view showing a rice cooker to which the inner pot shown in Fig. 1 is applied.

第6圖是表示使用第1圖所示的內鍋而煮成了飯時的內鍋及飯的溫度數據的曲線圖。 Fig. 6 is a graph showing temperature data of the inner pot and the rice when the rice is cooked using the inner pot shown in Fig. 1.

第7圖是表示使用第1圖所示的內鍋而煮成了飯時的內鍋的內側底壁部及外側側壁部的溫度數據的曲線圖,且是在使密閉空間的工作液相對於底部的體積比率發生了變化的情況下分情況而表示的圖。第7圖(A)表示將工作液的體積比率設定為3vol%的情況,第7圖(B)表示將工作液的體積比率設定為10vol%的情況,第7圖(C)表示將工作液的體積比率設定為85vol%的情況。 Fig. 7 is a graph showing temperature data of the inner bottom wall portion and the outer side wall portion of the inner pot when the inner pot is cooked using the inner pot shown in Fig. 1, and the working liquid phase in the closed space is made to the bottom. The graph represented by the case when the volume ratio has changed. Fig. 7(A) shows a case where the volume ratio of the working fluid is set to 3 vol%, Fig. 7(B) shows a case where the volume ratio of the working fluid is set to 10 vol%, and Fig. 7(C) shows the working fluid. The volume ratio was set to 85 vol%.

第8圖是用於對加熱了第1圖所示的內鍋時的密閉空間的側部的蒸氣上升進行說明的說明圖。 Fig. 8 is an explanatory view for explaining the rise of the vapor in the side portion of the sealed space when the inner pot shown in Fig. 1 is heated.

第9圖是表示第1圖所示的內鍋的變形例的對應於第1圖的縱剖面圖。 Fig. 9 is a vertical cross-sectional view corresponding to Fig. 1 showing a modification of the inner pot shown in Fig. 1.

第10圖(A)是表示第1圖所示的內側底壁部與外側底壁部的連結的變形之一例的立體圖,第10圖(B)是表示內側底壁部和外側底壁部的連結的另一變形的立體圖。 Fig. 10(A) is a perspective view showing an example of deformation of the connection between the inner bottom wall portion and the outer bottom wall portion shown in Fig. 1, and Fig. 10(B) is a view showing the inner bottom wall portion and the outer bottom wall portion. A perspective view of another variant of the link.

第11圖(A)是第二實施方式的內鍋的縱剖面圖(第11圖(B)的11A-11A線剖面圖),第11圖(B)是第11圖(A)所示的內鍋的仰視圖。 Fig. 11(A) is a longitudinal sectional view of the inner pot of the second embodiment (a cross-sectional view taken along line 11A-11A of Fig. 11(B)), and Fig. 11(B) is a view of Fig. 11(A). Bottom view of the inner pot.

第12圖是用於對第11圖所示的內鍋的製造方法進行說明的說明圖。 Fig. 12 is an explanatory view for explaining a method of manufacturing the inner pot shown in Fig. 11.

第13圖是第三實施方式的內鍋的縱剖面圖。 Fig. 13 is a longitudinal sectional view showing the inner pot of the third embodiment.

第14圖(A)是用於對第11圖所示的管的變形1進行說明的內鍋的縱剖面圖(第14圖(B)的14A-14A線剖面圖),第14圖(B)是第14圖(A)所示的內鍋的仰視圖。 Fig. 14(A) is a longitudinal sectional view of the inner pot for explaining the deformation 1 of the tube shown in Fig. 11 (cross-sectional view taken along line 14A-14A of Fig. 14(B)), Fig. 14 (B) ) is a bottom view of the inner pot shown in Fig. 14(A).

第15圖是用於對第11圖所示的管的變形2進行說明的內鍋的縱剖面圖。 Fig. 15 is a longitudinal sectional view of the inner pot for explaining the deformation 2 of the tube shown in Fig. 11.

第16圖(A)是表示在第11圖所示的內鍋上形成有缺口的例子的縱剖面圖,第16圖(B)是第16圖(A)所示的缺口的放大剖面圖(第16圖(A)的16B-16B線放大剖面圖)。第16圖(C)是將第16圖(A)的缺口形成於管的例子的局部縱剖面圖。 Fig. 16(A) is a longitudinal sectional view showing an example in which a notch is formed in the inner pot shown in Fig. 11, and Fig. 16(B) is an enlarged cross-sectional view showing the notch shown in Fig. 16(A) ( Figure 16 (A) is an enlarged sectional view of line 16B-16B). Fig. 16(C) is a partial longitudinal sectional view showing an example in which the notch of Fig. 16(A) is formed in a tube.

第17圖是在第1圖所示的內鍋中省略了連結銷後的另一變形例的對應於第1圖的縱剖面圖。 Fig. 17 is a vertical cross-sectional view corresponding to Fig. 1 in another modification in which the connecting pin is omitted in the inner pot shown in Fig. 1.

第18圖是表示第1圖所示的內側容器的第一凸緣及外側容器的第二凸緣的變形例的局部縱剖面圖。 Fig. 18 is a partial longitudinal sectional view showing a modification of the first flange of the inner container and the second flange of the outer container shown in Fig. 1.

Claims (8)

一種加熱烹調器,形成為有底筒狀,呈現在內部具有密閉空間的雙層壁構造,其特徵在於,具備: 有底筒狀的內側容器,其構成所述加熱烹調器的內側部分; 有底筒狀的外側容器,其構成所述加熱烹調器的外側部分;以及 工作液,其被注入至所述密閉空間內, 所述密閉空間內的所述工作液的量設定為不覆蓋所述密閉空間的底面整體的量。A heating cooker is formed in a bottomed cylindrical shape and has a double-wall structure having a closed space inside, and is characterized by comprising: a bottomed cylindrical inner container constituting an inner portion of the heating cooker; a bottomed cylindrical outer container constituting an outer portion of the heating cooker; a working fluid that is injected into the confined space, The amount of the working fluid in the sealed space is set to an amount that does not cover the entire bottom surface of the sealed space. 如申請專利範圍第1項所述之加熱烹調器,其中, 所述密閉空間的所述工作液相對於底部的體積比率設定為4vol%~80vol%。The heating cooker according to claim 1, wherein The volume ratio of the working liquid phase to the bottom portion of the closed space is set to 4 vol% to 80 vol%. 如申請專利範圍第1或2項所述之加熱烹調器,其中, 在縱剖視時,所述加熱烹調器的底部的所述密閉空間的高度尺寸設定為所述加熱烹調器的側部的所述密閉空間的寬度尺寸以上,且設定為2mm以上。The heating cooker according to claim 1 or 2, wherein In the longitudinal section, the height of the sealed space at the bottom of the heating cooker is set to be equal to or larger than the width dimension of the closed space of the side portion of the heating cooker, and is set to 2 mm or more. 如申請專利範圍第1或2項所述之加熱烹調器,其中, 所述密閉空間內維持為0.01個標準大氣壓以下的負壓或真空。The heating cooker according to claim 1 or 2, wherein The negative pressure or vacuum of 0.01 standard atmospheric pressure or less is maintained in the sealed space. 如申請專利範圍第4項所述之加熱烹調器,其中, 在所述內側容器的內側側壁部或所述外側容器的外側側壁部,設置有在將所述工作液注入所述密閉空間內時以及將所述密閉空間內製成負壓或真空時所使用的多個管。The heating cooker according to claim 4, wherein Provided in an inner side wall portion of the inner container or an outer side wall portion of the outer container, when the working fluid is injected into the sealed space and when the sealed space is made into a negative pressure or a vacuum Multiple tubes. 如申請專利範圍第5項所述之加熱烹調器,其中, 多個管等間隔地配置在所述加熱烹調器的周向上,在所述管安裝有覆蓋所述管的管罩。The heating cooker according to claim 5, wherein A plurality of tubes are disposed at equal intervals in the circumferential direction of the heating cooker, and a tube cover covering the tubes is attached to the tubes. 如申請專利範圍第1或2項所述之加熱烹調器,其中, 在所述內側容器的內側底壁部與內側側壁部之間形成有向所述內側容器的外側彎曲為凸狀的內側角部, 所述內側角部的半徑設定為隨著從所述內側底壁部去往所述內側側壁部而逐漸減小。The heating cooker according to claim 1 or 2, wherein An inner corner portion that is curved toward the outer side of the inner container is formed between the inner bottom wall portion and the inner side wall portion of the inner container, The radius of the inner corner portion is set to gradually decrease as going from the inner bottom wall portion to the inner side wall portion. 如申請專利範圍第1或2項所述之加熱烹調器,其中, 對所述內側容器的構成所述密閉空間的面以及所述外側容器的構成所述密閉空間的面實施了鏡面處理。The heating cooker according to claim 1 or 2, wherein The surface of the inner container that constitutes the sealed space and the surface of the outer container that constitutes the sealed space are mirror-finished.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI765737B (en) * 2020-06-30 2022-05-21 日商愛麗思歐雅瑪股份有限公司 Heating cookers and electric pots

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5718418U (en) * 1980-07-08 1982-01-30
JP2712864B2 (en) * 1991-04-10 1998-02-16 三菱電機株式会社 Cooker
JP2713008B2 (en) * 1991-04-16 1998-02-16 三菱電機株式会社 Cooking vessel
JPH1064429A (en) * 1996-08-14 1998-03-06 Canon Inc Manufacture of image display device
JP2001025441A (en) * 1999-07-13 2001-01-30 Tiger Vacuum Bottle Co Ltd Double cylinder vacuum container made of metal and its manufacture
JP4298373B2 (en) * 2003-05-15 2009-07-15 日本放送協会 Manufacturing method of flat panel display device
US20060219724A1 (en) * 2005-04-04 2006-10-05 Vladimir Melnik Thermos heated from the outside
JP5293035B2 (en) 2008-09-17 2013-09-18 株式会社リコー Data processing apparatus, data processing method, program, and recording medium
CN202069425U (en) * 2011-04-22 2011-12-14 量子科技(中国)有限公司 Uniform-temperature energy-saving pot
CN205267876U (en) * 2015-09-16 2016-06-01 浙江绍兴苏泊尔生活电器有限公司 Inner pot for cooking appliance and cooking appliance
CN105795890B (en) * 2016-05-27 2018-08-03 胡红标 A kind of energy-saving heat preserving device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI765737B (en) * 2020-06-30 2022-05-21 日商愛麗思歐雅瑪股份有限公司 Heating cookers and electric pots

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