JP3675325B2 - Electric cooker - Google Patents

Electric cooker Download PDF

Info

Publication number
JP3675325B2
JP3675325B2 JP2000296274A JP2000296274A JP3675325B2 JP 3675325 B2 JP3675325 B2 JP 3675325B2 JP 2000296274 A JP2000296274 A JP 2000296274A JP 2000296274 A JP2000296274 A JP 2000296274A JP 3675325 B2 JP3675325 B2 JP 3675325B2
Authority
JP
Japan
Prior art keywords
thermal fuse
cover
plate
holding plate
electric cooker
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2000296274A
Other languages
Japanese (ja)
Other versions
JP2002102075A (en
Inventor
隆二 永田
芳行 宇治野
秀和 鈴木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to JP2000296274A priority Critical patent/JP3675325B2/en
Publication of JP2002102075A publication Critical patent/JP2002102075A/en
Application granted granted Critical
Publication of JP3675325B2 publication Critical patent/JP3675325B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Control Of Resistance Heating (AREA)
  • Baking, Grill, Roasting (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、電源接続部と通電制御具との接触部の発熱による通電制御具の破損を防止した電気調理器に関する。
【0002】
【従来の技術】
この種の従来の電気調理器の断面図を図8に示す。図8において、1は被加熱調理器具であるプレート、2はプレート1を載置して加熱するための加熱体であるヒーター。3はヒーターを載置すると共にプレート1およびヒーター2を覆う遮熱板、4は商用電源からヒーターへの接続を行う接続部5とプレート1の温度調節とを行う温度制御部6を有する通電制御具である。7はヒーター2へ接続する電源接続部8を有する保護ケースである。また、9は遮熱板を覆い保護ケースを保持するボデーである。
【0003】
以上の構成において、電源接続部8に通電制御具4の接続部5を接続し、ヒーター2に通電することによりプレート1が加熱される。このときプレート1に当接した通電制御具4の温度調節部6によりヒーター2の通電制御を行い、プレート1の温度を調節する。
【0004】
【発明が解決しようとする課題】
しかしながら、前記従来の構成では、電源接続部8と通電制御具4の接続部5との接続部分に、調理物の汁などが付着した場合など、まれではあるが、接続部分の接触抵抗が上昇し、発熱し、通電制御具4を破損させてしまうという問題を有していた。
【0005】
本発明は、前記従来の課題を解決するもので、電源接続部と通電制御具の接続部との接続部分の異常な発熱による通電制御具の破損を防止した電気調理器を提供することを目的とする。
【0006】
【課題を解決するための手段】
前記従来の課題を解決するために、本発明の電気調理器は、保護ケースの電源接続部に導電性の保持板を電気的に接続し、この保持板によって温度ヒューズを保持し、かつ、保持板の前面にカバーを設ける構成とした。
【0007】
これによって、電源接続部と通電制御具の接続部との接続部分の接触抵抗が上昇し異常な熱が発生した場合、保持板を介してこの熱を温度ヒューズへ熱伝導させ、温度ヒューズを切断させることにより通電を停止する。また、カバーにより溢水に対する保持板の絶縁を確保する。
【0008】
【発明の実施の形態】
請求項1に記載の発明は、被調理物の調理を行う被加熱調理器具と、前記被加熱調理器具の下方に配した加熱体と、前記被加熱調理器具と前記加熱体の側方および下方を覆う遮熱板と、前記遮熱板の外方を覆い本体外郭を構成するボデーと、前記ボデーの一側面に設けた保護ケースと、前記保護ケース内に設けた電源接続部と、前記電源接続部と着脱自在に接続する通電制御具の接続部と、前記電源接続部に接続した保持板と、前記保持板と前記加熱体間に直列に結線した電気絶縁物に包含され前記保持板で保持された温度ヒューズと、前記保持板の前面に設けたカバーとを備える構成とした。この構成で電源接続部と通電制御具との接続部で発熱したとき温度ヒューズへ熱伝導させ、温度ヒューズの通電切断動作により通電を停止し、通電制御具の破損を防止することができる。また、カバーで充電部である保持板の防水効果を確保できる。
【0009】
請求項2に記載の発明は、特に、請求項1記載のカバーで保持板と温度ヒューズとを覆う構成とすることにより、請求項1の作用効果に加えて、加熱体からの保持板および温度ヒューズに対する輻射熱等の熱影響を防ぎ、通常使用時の温度ヒューズの温度上昇を抑え、誤検知を防止することができるとともに、充電部である保持板および温度ヒューズへの防水効果を確保することができる。
【0010】
請求項3に記載の発明は、特に、請求項2記載のカバーの温度ヒューズ側に温度ヒューズに対応する部分に凸部を設けることにより、温度ヒューズを保持板に、より密着せしめ、温度ヒューズの受感を向上させることができる。
【0011】
請求項4に記載の発明は、特に、請求項1記載のカバーは温度ヒューズが遮熱板からの輻射を受けれるようにする構成とすることにより、被加熱調理器具の温度調節機能が損なわれた場合等におこる異常な加熱体の発熱を、遮熱板からの輻射熱として温度ヒューズが受熱し易くし、温度ヒューズの感度を高め、温度ヒューズの温度検知および通電切断動作により通電を停止し、機器の破損を防止することができる。
【0012】
請求項5に記載の発明は、特に、請求項1記載の電気絶縁物を、保持板間に2.5mmを超える隙間を確保する円環部と、前記円環部の外円周部に設けた凸部を有する形状とすることにより、水が保持板間に付着しても凸部の水切り作用により、保持板間の絶縁を確保することができる。
【0013】
【実施例】
以下本発明の実施例について、図面を参照しながら説明する。
【0014】
(実施例1)
図1は、本発明の第1の実施例における電気調理器の断面図を示す。図2(a)は、同電気調理器のカバー取付け部の側面図であり、図2(b)は、図2(a)においてカバーを取外したときの側面図である。また、図3(a)は、同電気調理器のカバー取付け部の上面図であり、図3(b)は、図3(b)においてカバーを取外したときの上面図である。
【0015】
図1、図2、および図3において、11は調理物を載せて調理を行うプレートや鍋などの被加熱調理器具である。本実施例ではプレートを用いた場合について説明する。12はプレート11を載置して加熱する加熱体であるヒーター、13はヒーター12を支持しかつプレート1とヒーター12とを覆う遮熱板である。本実施例では遮熱板の材料として金属を用いている。14は商用電源からヒーター12への接続部15と温度調節を行う温度調節部16とを有する通電制御具、17は通電制御具4とヒーター12への電源接続をおこなう保護ケース、18は保護ケース17に設けられた電源接続部、19は電源接続部18に取付けられた導電性の弾性物質よりなる保持板である。本実施例では保持板の材料としてバネ性の燐青銅を用いている。20は保持板19によってクリンプ保持された温度ヒューズ、21は遮熱板13を覆い、保護ケース17を載置するボデーである。22は温度ヒューズ20を包む電気絶縁物。23は保持板および温度ヒューズを覆うポリエステル樹脂またはフェノール樹脂等の合成樹脂からなる電気絶縁性のカバーである。
【0016】
以上のように構成された電気調理器について、以下その動作および作用を説明する。調理物を載せて調理を行うプレート11は、遮熱板13により覆われ支持されたヒーター12の上に載置して加熱される。ヒーター12は通電制御具14の接続部15と電源接続部18とを接続することにより通電される。また、通電はプレート11下部に当接した温度調節部16によりプレート11の温度を感知し、通電制御される。
【0017】
ヒーター加熱時に接続部15と電源接続部18との接触が不完全のため接触抵抗が増大し発熱が生じた場合、この熱は電源接続部18に取付けられた保持板19に熱伝導し、保持板19により保持された温度ヒューズ20に熱が伝えられ、温度ヒューズ20の検知温度に達すると、温度ヒューズ20内のペレットが溶け、電流が切断される。
【0018】
以下、カバーの作用について述べる。本実施例では、カバー23で保持板19および温度ヒューズ20を覆うように設けられている。この場合、遮熱板13からの輻射が直接温度ヒューズ20を照射するのを防いでいる。さらに、調理物の汁などが浸入するなどのいわゆる溢水に対し、充電部である保持板19と温度ヒューズ20をカバー23で覆うことで、保持板19近傍に汁などがかからない構成となる。
【0019】
さらに、電気絶縁物であるカバー23で充電部である保持板19を覆い、金属製の遮熱板13との絶縁をおこなう。
【0020】
以上のように、本実施例においては、保護ケース17の電源接続部18に保持板19を接続し、保持板19によって温度ヒューズ20を保持し、カバー23で保持板19および温度ヒューズ20を覆う構成とすることにより、前記保持板19は、電源接続部18と接続部15との接触抵抗が上昇した場合発生する熱を、温度ヒューズ20へ熱伝導させ、温度ヒューズ20の温度検知および通電切断動作により、通電を停止しするので、通電制御具14の破損を防止することができる。
【0021】
また、カバー23で保持板および温度ヒューズ20を覆うことにより、加熱体12からの保持板19および温度ヒューズ20に対する輻射熱を防ぎ、通常使用時の温度ヒューズ20の温度上昇を抑え、誤検知を防止することができるとともに、充電部である保持板19および温度ヒューズ20への汁などの付着を防ぐことができる。
【0022】
またさらに、電気絶縁物であるカバー23で充電部である保持板19を覆うことにより、金属よりなる遮熱板13との絶縁を確保することができる。
【0023】
(実施例2)
図4は本発明の第2の実施例における電気調理器の要部断面図である。
【0024】
図4において、実施例1の構成と異なるところは、カバー23の温度ヒューズ20側に温度ヒューズ20に当接する凸部24を設けた点である。
【0025】
以上のように構成された電気調理器について、以下その動作、作用を説明する。
【0026】
まず、通電制御具14の接続部15と保護ケース17に設けた電源接続部18の接触抵抗が上昇し、発熱がおこった場合、この熱は電源接続部18に取付けられた保持板19に熱伝導し、保持板19により保持された温度ヒューズ20に熱が伝えられ、温度ヒューズ20の検知温度に達すると、温度ヒューズ20内のペレットが溶け、電流が切断される。
【0027】
ここで、カバー23に温度ヒューズに対応する側に凸部24を設けることにより、温度ヒューズ20を保持板19により密着させ、保持板から温度ヒューズへの熱の伝わりがよくなる。
【0028】
以上のように、本実施例においては、カバー23に温度ヒューズ側に温度ヒューズに接する凸部24を設けることにより、温度ヒューズ20を保持板19により密着させることで、電源接続部18と接続部15との接触抵抗が大きく熱が発生した場合、熱を保持板19から温度ヒューズ20によりよく熱伝導させ、温度ヒューズ20の受感を向上させ、温度ヒューズ20の温度検知および通電切断動作により通電を停止することにより、通電制御具14の破損を防止することができる。
【0029】
(実施例3)
図5は本発明の第3の実施例における電気調理器の要部断面図であり、図6は、同電気調理器のカバー取付け部の側面図である。
【0030】
図5および図6において、実施例1の構成と異なる点は、実施例1のカバー23の一部を切断し温度ヒューズ20が遮熱板13からの輻射熱を受けるように構成したカバー25を設けた点である。
【0031】
この構成の電気調理器について、以下その動作、作用を説明する。このカバー25ではヒーター12側に温度ヒューズ20前部が露出しているため、プレート11の温度調節機能が損なわれた場合におこる異常なヒーターの発熱を、遮熱板13からの輻射熱として、温度ヒューズ20が受熱し、温度ヒューズの温度検知および通電切断動作により通電を停止しする。
【0032】
また、カバー25は温度ヒューズ20前部のみを露出させ、他の保持板19および温度ヒューズ20の上部を覆っているため、調理物の汁などが浸入するなどのいわゆる溢水に対し、充電部である保持板19と温度ヒューズ20へ汁などがかかりにくい構成となる。
【0033】
以上のように、本実施例において、カバー25のヒーター12側の温度ヒューズ20前部を露出させることにより、プレート11の温度調節機能が損なわれた場合におこる異常な発熱を、遮熱板13からの輻射熱として、温度ヒューズ20が受熱し易くし、温度ヒューズ20の感度を高め、温度ヒューズの温度検知および通電切断動作により通電を停止しすることにより、機器の破損を防止することができる。
【0034】
また、カバー25は温度ヒューズ20前部のみを露出させ、他の保持板および温度ヒューズの上部を覆っているため、調理物の汁などが浸入に対し、充電部である保持板19と温度ヒューズ20に汁などがかかりずらくすることができる。
【0035】
なお、ヒーター12が正常に動作している限り遮熱板13からの輻射熱はほとんど一定であるため、このことを考慮して設計することにより、電源接続部18と接続部15とのっ接触不良の検知に対する誤動作にならないようにすることができる。
【0036】
なお、本実施例ではカバー25は温度ヒューズに対応する下方部分をすべて削除してある場合を示したが、これに限定されるものではなく温度ヒューズに対応する部分のみを削除した、例えば矩形状の開口としてもよい。
【0037】
また、温度ヒューズの露出のさせかたは全部でも、部分的であってもよい。これは全体の構成により必要に応じて実験的に求めればよい。
【0038】
(実施例4)
図7は、本発明の第4の実施例における電気調理器のカバー取付部のカバーを取外した状態を示す図である。
【0039】
図7において、実施例1の構成と異なる点は、電気絶縁物22に、それぞれの電源接続部に接続された保持板間に、2.5mmを超える隙間を確保する円環部26と前記円環外円周部に凸部27を設けた点である。本実施例では凸部27の形状は、先端が根元よりも細い、先細り形状とする。
【0040】
以上のように構成された電気調理器について、以下その動作、作用を説明する。
【0041】
まず、異極充電部である電源接続部に接続された保持板19間に、電気絶縁物22に2.5mmを超える隙間を確保する円環部26を設けて、保持板19間の距離を保ち、また、調理物の汁などの浸入時に、凸部27の頂点に対し液体が分かれて流れる水切り効果により、保持板19間を液体が橋渡しすることがない。
【0042】
以上のように、本実施例においては、異極充電部である保持板19間に、電気絶縁物22に2.5mmを超える隙間を確保する円環部26を設けることにより、調理物の汁などが浸入するなどの溢水に対し、保持板間の絶縁を確保することができる。
【0043】
また電気絶縁物22円環外円周部に凸部27を設けることにより、調理物の汁などの浸入に対し、液体のきれをよくし、保持板間の絶縁を確保することができる。
【0044】
【発明の効果】
以上のように、請求項1〜5に記載の発明によれば、電源接続部と通電制御具との接触部の発熱による通電制御具の破損を防止できるとともに、溢水に対する絶縁を確保することができる。
【図面の簡単な説明】
【図1】本発明の実施例1における電気調理器の断面図
【図2】(a)同電気調理器のカバー取付け部の側面図
(b)図2(a)においてカバーを取外したときの側面図
【図3】(a)同電気調理器のカバー取付け部の上面図
(b)図3(a)においてカバーを取外したときの側面図
【図4】本発明の実施例2における電気調理器の要部断面図
【図5】本発明の実施例3における電気調理器の要部断面図
【図6】同電気調理器のカバー取付け部の側面図
【図7】本発明の実施例4における電気調理器のカバー取付け部のカバーを取外した状態を示す図
【図8】従来の電気調理器の断面図
【符号の説明】
11 プレート(被加熱調理具)
12 ヒーター(加熱体)
13 遮熱板
14 通電制御具
15 接続部
17 保護ケース
18 電源接続部
19 保持板
20 温度ヒューズ
21 ボデー
22 電気絶縁物
23、25 カバー
24、27 凸部
26 円環部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric cooker that prevents damage to an energization control tool due to heat generation at a contact portion between a power supply connection portion and an energization control tool.
[0002]
[Prior art]
A sectional view of this type of conventional electric cooker is shown in FIG. In FIG. 8, 1 is a plate which is a cooked utensil, and 2 is a heater which is a heating body for placing and heating the plate 1. 3 is a heat shield plate for placing the heater and covering the plate 1 and the heater 2, and 4 is a power supply control having a connection portion 5 for connecting the commercial power source to the heater and a temperature control portion 6 for adjusting the temperature of the plate 1. It is a tool. Reference numeral 7 denotes a protective case having a power supply connection portion 8 connected to the heater 2. Reference numeral 9 denotes a body that covers the heat shield and holds the protective case.
[0003]
In the above configuration, the plate 1 is heated by connecting the connection portion 5 of the energization control tool 4 to the power supply connection portion 8 and energizing the heater 2. At this time, energization control of the heater 2 is performed by the temperature adjusting unit 6 of the energization control tool 4 in contact with the plate 1 to adjust the temperature of the plate 1.
[0004]
[Problems to be solved by the invention]
However, in the conventional configuration, the contact resistance of the connection portion is increased in rare cases such as when the juice of the cooked food adheres to the connection portion between the power supply connection portion 8 and the connection portion 5 of the energization control tool 4. However, it has a problem that it generates heat and damages the energization control tool 4.
[0005]
The present invention solves the above-described conventional problems, and an object thereof is to provide an electric cooker that prevents the energization control tool from being damaged due to abnormal heat generation at the connection portion between the power supply connection portion and the connection portion of the energization control tool. And
[0006]
[Means for Solving the Problems]
In order to solve the above-described conventional problems, the electric cooker of the present invention electrically connects a conductive holding plate to the power supply connection portion of the protective case, holds the temperature fuse by the holding plate, and holds it. A cover is provided on the front surface of the plate.
[0007]
As a result, when the contact resistance between the connection part of the power supply connection part and the connection part of the energization control tool rises and abnormal heat is generated, this heat is conducted to the thermal fuse via the holding plate, and the thermal fuse is cut. To stop energization. Moreover, the insulation of the holding plate against overflow is secured by the cover.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 is a cooked utensil for cooking an object to be cooked, a heating body disposed below the cooked utensil, a side and a lower side of the cooked utensil and the heating body. A heat shielding plate that covers the outside of the heat shielding plate and that constitutes a main body outline, a protective case provided on one side of the body, a power supply connection provided in the protective case, and the power source A connection portion of an energization control tool that is detachably connected to the connection portion; a holding plate connected to the power supply connection portion; and an electric insulator connected in series between the holding plate and the heating body. It was set as the structure provided with the hold | maintained temperature fuse and the cover provided in the front surface of the said holding plate. With this configuration, when heat is generated at the connection portion between the power supply connection portion and the energization control tool, heat conduction is performed to the thermal fuse, and energization is stopped by the energization cutting operation of the thermal fuse, thereby preventing the energization control tool from being damaged. Moreover, the waterproof effect of the holding plate which is a charging part is securable with a cover.
[0009]
In the invention described in claim 2, in addition to the function and effect of claim 1, in particular, the cover plate and the temperature fuse are covered with the cover described in claim 1 so that the holding plate and the temperature from the heating body are covered. It is possible to prevent thermal effects such as radiant heat on the fuse, suppress the temperature rise of the temperature fuse during normal use, prevent false detection, and ensure the waterproof effect on the holding plate and the temperature fuse that are the live parts it can.
[0010]
In the invention described in claim 3, in particular, by providing a convex portion on the temperature fuse side of the cover described in claim 2 at a portion corresponding to the temperature fuse, the temperature fuse is more closely attached to the holding plate, Sensitivity can be improved.
[0011]
In the invention according to claim 4, in particular, the cover according to claim 1 is configured so that the thermal fuse can receive radiation from the heat shield plate, so that the temperature adjustment function of the cooked utensil is impaired. The heat generated by the abnormal heating element in the case of the heat is easily received by the thermal fuse as radiant heat from the heat shield, the sensitivity of the thermal fuse is increased, the current detection is stopped by the temperature detection of the thermal fuse, Damage to the equipment can be prevented.
[0012]
The invention according to claim 5 is particularly provided with the electrical insulator according to claim 1 in an annular portion that secures a gap exceeding 2.5 mm between the holding plates and an outer circumferential portion of the annular portion. By adopting a shape having convex portions, even if water adheres between the holding plates, insulation between the holding plates can be ensured by the draining action of the convex portions.
[0013]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0014]
(Example 1)
FIG. 1 shows a cross-sectional view of an electric cooker in a first embodiment of the present invention. Fig.2 (a) is a side view of the cover attachment part of the electric cooking device, and FIG.2 (b) is a side view when the cover is removed in Fig.2 (a). Moreover, Fig.3 (a) is a top view of the cover attachment part of the same electric cooking device, and FIG.3 (b) is a top view when a cover is removed in FIG.3 (b).
[0015]
In FIG. 1, FIG. 2, and FIG. 3, reference numeral 11 denotes a cooking utensil such as a plate or a pan on which food is placed and cooked. In this embodiment, a case where a plate is used will be described. Reference numeral 12 denotes a heater that is a heating body for placing and heating the plate 11, and 13 is a heat shield that supports the heater 12 and covers the plate 1 and the heater 12. In this embodiment, metal is used as the material of the heat shield. Reference numeral 14 denotes an energization control tool having a connection part 15 from the commercial power source to the heater 12 and a temperature control part 16 for adjusting the temperature, 17 denotes a protective case for connecting the power supply to the energization control tool 4 and the heater 12, and 18 denotes a protection case. Reference numeral 19 denotes a power supply connection portion, and 19 denotes a holding plate made of a conductive elastic material attached to the power supply connection portion 18. In this embodiment, spring-type phosphor bronze is used as the material of the holding plate. Reference numeral 20 denotes a thermal fuse crimped and held by the holding plate 19, and 21 denotes a body that covers the heat shield plate 13 and on which the protective case 17 is placed. An electrical insulator 22 encloses the thermal fuse 20. Reference numeral 23 denotes an electrically insulating cover made of a synthetic resin such as polyester resin or phenol resin that covers the holding plate and the thermal fuse.
[0016]
About the electric cooker comprised as mentioned above, the operation | movement and an effect | action are demonstrated below. A plate 11 on which food is placed and cooked is placed and heated on a heater 12 covered and supported by a heat shield plate 13. The heater 12 is energized by connecting the connecting portion 15 of the energization control tool 14 and the power supply connecting portion 18. Further, the energization is controlled by sensing the temperature of the plate 11 by the temperature adjusting unit 16 in contact with the lower part of the plate 11.
[0017]
If the contact resistance increases and heat is generated due to incomplete contact between the connection portion 15 and the power supply connection portion 18 when the heater is heated, this heat is conducted to the holding plate 19 attached to the power supply connection portion 18 and retained. When heat is transferred to the thermal fuse 20 held by the plate 19 and the temperature detected by the thermal fuse 20 is reached, the pellet in the thermal fuse 20 melts and the current is cut off.
[0018]
The operation of the cover will be described below. In the present embodiment, the cover 23 is provided so as to cover the holding plate 19 and the thermal fuse 20. In this case, radiation from the heat shield plate 13 is prevented from directly irradiating the thermal fuse 20. Further, by covering the holding plate 19 and the temperature fuse 20 that are charging parts with a cover 23 against so-called overflowing water such as the soup of the cooked food or the like, the soup is not applied to the vicinity of the holding plate 19.
[0019]
Further, the holding plate 19 that is a charging part is covered with a cover 23 that is an electrical insulator, and is insulated from the metal heat shield plate 13.
[0020]
As described above, in this embodiment, the holding plate 19 is connected to the power supply connection portion 18 of the protective case 17, the temperature fuse 20 is held by the holding plate 19, and the holding plate 19 and the temperature fuse 20 are covered by the cover 23. By adopting the configuration, the holding plate 19 conducts heat generated when the contact resistance between the power supply connection portion 18 and the connection portion 15 is increased to the thermal fuse 20 to detect the temperature of the thermal fuse 20 and cut off the power supply. Since the energization is stopped by the operation, the energization control tool 14 can be prevented from being damaged.
[0021]
Further, by covering the holding plate and the thermal fuse 20 with the cover 23, radiant heat from the heating body 12 to the holding plate 19 and the thermal fuse 20 is prevented, temperature rise of the thermal fuse 20 during normal use is suppressed, and erroneous detection is prevented. In addition, it is possible to prevent attachment of juice or the like to the holding plate 19 and the thermal fuse 20 which are charging parts.
[0022]
Furthermore, the insulation with the heat shield plate 13 made of metal can be ensured by covering the holding plate 19 which is a charging part with the cover 23 which is an electrical insulator.
[0023]
(Example 2)
FIG. 4 is a cross-sectional view of an essential part of an electric cooker according to the second embodiment of the present invention.
[0024]
In FIG. 4, the difference from the configuration of the first embodiment is that a convex portion 24 that contacts the temperature fuse 20 is provided on the temperature fuse 20 side of the cover 23.
[0025]
About the electric cooker comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
[0026]
First, when the contact resistance between the connection part 15 of the energization control tool 14 and the power supply connection part 18 provided in the protective case 17 increases and heat is generated, this heat is applied to the holding plate 19 attached to the power supply connection part 18. Heat is conducted to the thermal fuse 20 held by the holding plate 19, and when the temperature detected by the thermal fuse 20 is reached, the pellet in the thermal fuse 20 is melted and the current is cut.
[0027]
Here, by providing the cover 23 with the convex portion 24 on the side corresponding to the temperature fuse, the temperature fuse 20 is brought into close contact with the holding plate 19 so that heat transfer from the holding plate to the temperature fuse is improved.
[0028]
As described above, in the present embodiment, the cover 23 is provided with the convex portion 24 in contact with the thermal fuse on the thermal fuse side, so that the thermal fuse 20 is brought into close contact with the holding plate 19 so that the power supply connection portion 18 and the connection portion are connected. 15, when heat is generated with a large contact resistance, the heat is transferred from the holding plate 19 to the thermal fuse 20 better, the sensitivity of the thermal fuse 20 is improved, and the thermal detection of the thermal fuse 20 and energization by the energization cutting operation are performed. By stopping the operation, it is possible to prevent the energization control tool 14 from being damaged.
[0029]
(Example 3)
FIG. 5 is a sectional view of an essential part of an electric cooking device according to a third embodiment of the present invention, and FIG. 6 is a side view of a cover mounting portion of the electric cooking device.
[0030]
5 and FIG. 6, the difference from the configuration of the first embodiment is that a cover 25 configured to cut a part of the cover 23 of the first embodiment so that the thermal fuse 20 receives radiant heat from the heat shield plate 13 is provided. It is a point.
[0031]
The operation and action of the electric cooker having this configuration will be described below. In this cover 25, the front portion of the thermal fuse 20 is exposed on the heater 12 side, and therefore abnormal heat generation of the heater that occurs when the temperature adjustment function of the plate 11 is impaired is regarded as radiant heat from the heat shield plate 13. The fuse 20 receives heat, and the energization is stopped by the temperature detection and energization cutting operation of the thermal fuse.
[0032]
Moreover, since the cover 25 exposes only the front part of the thermal fuse 20 and covers the other holding plate 19 and the upper part of the thermal fuse 20, it prevents the soup from entering the soup of cooked food, etc. The structure is such that juice is not easily applied to a certain holding plate 19 and the thermal fuse 20.
[0033]
As described above, in the present embodiment, by exposing the front portion of the temperature fuse 20 on the heater 12 side of the cover 25, abnormal heat generation that occurs when the temperature adjustment function of the plate 11 is impaired can be prevented. The thermal fuse 20 can easily receive heat as radiant heat from the heat, increase the sensitivity of the thermal fuse 20, and stop the energization by the temperature detection of the thermal fuse and the energization cutting operation, thereby preventing damage to the equipment.
[0034]
Moreover, since the cover 25 exposes only the front part of the thermal fuse 20 and covers the other holding plate and the upper part of the thermal fuse, the holding plate 19 which is a charging unit and the thermal fuse against the intrusion of cooking soup and the like. It is possible to make it difficult for 20 to get juice.
[0035]
In addition, as long as the heater 12 is operating normally, the radiant heat from the heat shield 13 is almost constant, so by designing with this in mind, poor contact between the power supply connection portion 18 and the connection portion 15 It is possible to prevent malfunctions due to the detection of the above.
[0036]
In this embodiment, the cover 25 has been shown in which all the lower part corresponding to the thermal fuse has been deleted. However, the present invention is not limited to this, and only the part corresponding to the thermal fuse is deleted. It is good also as opening of.
[0037]
Further, the method of exposing the thermal fuse may be complete or partial. This may be obtained experimentally as necessary according to the overall configuration.
[0038]
(Example 4)
FIG. 7 is a view showing a state where the cover of the cover attaching portion of the electric cooking device in the fourth embodiment of the present invention is removed.
[0039]
In FIG. 7, the difference from the configuration of the first embodiment is that the ring portion 26 that secures a gap exceeding 2.5 mm between the holding plates connected to the respective power connection portions in the electrical insulator 22 and the circle. This is the point that the convex portion 27 is provided on the outer circumferential portion. In the present embodiment, the shape of the convex portion 27 is a tapered shape whose tip is thinner than the root.
[0040]
About the electric cooker comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.
[0041]
First, between the holding plates 19 connected to the power supply connection portion which is a different polarity charging portion, an annular portion 26 for ensuring a gap exceeding 2.5 mm is provided in the electrical insulator 22 so that the distance between the holding plates 19 is increased. In addition, the liquid does not bridge between the holding plates 19 due to the draining effect in which the liquid flows separately from the apex of the convex portion 27 when the soup of the cooked food enters.
[0042]
As described above, in this embodiment, by providing the annular portion 26 that secures a gap exceeding 2.5 mm in the electrical insulator 22 between the holding plates 19 that are different-polarity charging portions, Insulation between the holding plates can be secured against overflowing water.
[0043]
Further, by providing the convex portions 27 on the outer circumferential portion of the electrical insulator 22 ring, it is possible to improve the liquid drainage against the intrusion of the soup of the cooked food and to ensure the insulation between the holding plates.
[0044]
【The invention's effect】
As described above, according to the first to fifth aspects of the present invention, it is possible to prevent the energization control tool from being damaged by the heat generated in the contact portion between the power supply connection portion and the energization control tool, and to ensure insulation against overflow. it can.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an electric cooker in Embodiment 1 of the present invention. FIG. 2 (a) is a side view of a cover attachment portion of the electric cooker. FIG. 2 (b) is a view when a cover is removed in FIG. Side view [Fig. 3] (a) Top view of cover attaching portion of electric cooker (b) Side view with cover removed in Fig. 3 (a) [Fig. 4] Electric cooking in Embodiment 2 of the present invention Fig. 5 is a cross-sectional view of the main part of the electric cooker according to the third embodiment of the present invention. Fig. 6 is a side view of the cover attaching portion of the electric cooker. The figure which shows the state which removed the cover of the cover attaching part of the electric cooking appliance in FIG. 8 [FIG. 8] Sectional drawing of the conventional electric cooking appliance
11 plates (cooking utensils)
12 Heater (Heating body)
13 Heat-shielding plate 14 Energization control tool 15 Connection part 17 Protective case 18 Power supply connection part 19 Holding plate 20 Thermal fuse 21 Body 22 Electrical insulator 23, 25 Cover 24, 27 Convex part 26 Ring part

Claims (5)

被調理物の調理を行う被加熱調理器具と、前記被加熱調理器具の下方に配した加熱体と、前記被加熱調理器具と前記加熱体の側方および下方を覆う遮熱板と、前記遮熱板の外方を覆い本体外郭を構成するボデーと、前記ボデーの一側面に設けた保護ケースと、前記保護ケース内に設けた電源接続部と、前記電源接続部と着脱自在に接続する通電制御具の接続部と、前記電源接続部に接続した保持板と、前記保持板と前記加熱体間に直列に結線した電気絶縁物に包含され前記保持板で保持された温度ヒューズと、前記保持板の前面に設けたカバーとを備えてなる電気調理器。A cooked utensil for cooking the cooked food, a heating body disposed below the cooked cooking utensil, a heat shield for covering the cooked cookware and the sides of the heated cooker, and the lower side, and the shield. A body that covers the outer side of the heat plate and constitutes the outer shell of the main body, a protective case provided on one side of the body, a power connection part provided in the protective case, and an energization that is detachably connected to the power supply connection part A connecting portion of the control tool, a holding plate connected to the power source connecting portion, a thermal fuse included in an electrical insulator connected in series between the holding plate and the heating body, and held by the holding plate; and the holding An electric cooker comprising a cover provided on the front surface of the plate. カバーは保持板と温度ヒューズとを覆う構成とした請求項1記載の電気調理器。The electric cooker according to claim 1, wherein the cover covers the holding plate and the thermal fuse. カバーは温度ヒューズに対応する部分に凸部を有する構成とした請求項2記載の電気調理器。The electric cooker according to claim 2, wherein the cover has a convex portion at a portion corresponding to the thermal fuse. カバーは温度ヒューズが遮熱板からの輻射を受けれる構成とした請求項1記載の電気調理器。The electric cooker according to claim 1, wherein the cover is configured such that the thermal fuse can receive radiation from the heat shield plate. 電気絶縁物は、それぞれの電源接続部に接続した保持板間に配した2.5mmを超える幅の円環部と前記円環部の外円周に設けた凸部とを有する構成とした請求項1ないし4のいずれか1項に記載の電気調理器。The electrical insulator has a configuration in which an annular portion having a width exceeding 2.5 mm and a convex portion provided on an outer circumference of the annular portion are disposed between the holding plates connected to the respective power supply connecting portions. Item 5. The electric cooker according to any one of Items 1 to 4.
JP2000296274A 2000-09-28 2000-09-28 Electric cooker Expired - Fee Related JP3675325B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000296274A JP3675325B2 (en) 2000-09-28 2000-09-28 Electric cooker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000296274A JP3675325B2 (en) 2000-09-28 2000-09-28 Electric cooker

Publications (2)

Publication Number Publication Date
JP2002102075A JP2002102075A (en) 2002-04-09
JP3675325B2 true JP3675325B2 (en) 2005-07-27

Family

ID=18778570

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000296274A Expired - Fee Related JP3675325B2 (en) 2000-09-28 2000-09-28 Electric cooker

Country Status (1)

Country Link
JP (1) JP3675325B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008307150A (en) * 2007-06-13 2008-12-25 Tiger Vacuum Bottle Co Ltd Cooker

Also Published As

Publication number Publication date
JP2002102075A (en) 2002-04-09

Similar Documents

Publication Publication Date Title
CA2051861C (en) Domestic cooking apparatus
US5946448A (en) Methods of assembling immersion heaters with heating elements in the form of printed circuit tracks
AU682069B2 (en) Improvements relating to electrically heated water boiling vessels
US4755655A (en) Thermal protection arrangement for solid disk glass cooktop
JP3675325B2 (en) Electric cooker
GB2095834A (en) Temperature sensing assembly for an electrical radiant heater
CN209882121U (en) Cooking utensil
CN209767839U (en) Cooking utensil
JP3539341B2 (en) Electric cooker
JP3232749B2 (en) Overheat prevention device for rice cooker
GB2315366A (en) Thermal controls for liquid heating vessels
CN117330202B (en) Temperature sensor for monitoring temperature of electric cooker and temperature monitoring control method thereof
JP3675295B2 (en) Electric cooker
CN209750739U (en) Cooking utensil
JPS625607B2 (en)
JPH0157256B2 (en)
JPH07102177B2 (en) Overheating prevention device for cookware
CA1273671A (en) Thermal protection arrangement for solid disk glass cooktop
JP2501836Y2 (en) Electromagnetic rice cooker
JPH03241236A (en) Electric hot plate
JPH03280384A (en) Cooking apparatus with induction heating
JP2549347B2 (en) Thermal alarm
JPH09192002A (en) Temperature detection device of rice cooker
JPH0520255Y2 (en)
JPH0645766Y2 (en) Electric kotatsu

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050328

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20050412

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20050425

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090513

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100513

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110513

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120513

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130513

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130513

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140513

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees