JPH02139888A - Electric heating unit - Google Patents
Electric heating unitInfo
- Publication number
- JPH02139888A JPH02139888A JP29268488A JP29268488A JPH02139888A JP H02139888 A JPH02139888 A JP H02139888A JP 29268488 A JP29268488 A JP 29268488A JP 29268488 A JP29268488 A JP 29268488A JP H02139888 A JPH02139888 A JP H02139888A
- Authority
- JP
- Japan
- Prior art keywords
- heat insulating
- heating wire
- electric heating
- clay
- heating unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005485 electric heating Methods 0.000 title claims description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 11
- 239000004927 clay Substances 0.000 claims abstract description 10
- 239000011810 insulating material Substances 0.000 claims description 14
- 239000011230 binding agent Substances 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 239000000758 substrate Substances 0.000 abstract 3
- 239000007767 bonding agent Substances 0.000 abstract 2
- 239000004744 fabric Substances 0.000 abstract 2
- 239000000377 silicon dioxide Substances 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 4
- 238000010411 cooking Methods 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、一般家庭において主に調理用に使用される電
熱ユニットに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric heating unit used mainly for cooking in ordinary households.
従来の技術
従来より、一般家庭で使用される調理用の電熱ユニット
としては、陶器の上に、螺旋状に巻いた電熱線を配設し
た電気こんろや、シーズヒークを渦巻状に巻いてユニッ
ト化した電気レンジなどがある。Conventional technology Traditionally, electric heating units for cooking used in general households include electric stoves with spirally wound heating wires placed on ceramics, and units made by winding Sheezheek in a spiral shape. There is an electric range.
これら以外に、欧米では、螺旋状に巻いた電熱線を断熱
材に設けた溝に配設し、この上にセラミックガラス板を
置き、そしてこのセラミックガラス板を加熱面とするス
ムーズトップと呼ばれる電熱ユニットなどが広く使用さ
れている。In addition to these methods, in Europe and the United States, there is an electric heating system called smooth top, in which a spirally wound heating wire is placed in a groove in the insulation material, a ceramic glass plate is placed on top of the heating wire, and the ceramic glass plate is used as the heating surface. units are widely used.
しかしながら１日本においては、陶器を使用した電気こ
んろが価格的に安価であるとともに、スムーズトップな
どの電熱ユニットなどに比較して、熱効率が優れている
ため、いまだ、根強い需要がある。However, in Japan, electric stoves made of ceramic are still in strong demand because they are inexpensive and have superior thermal efficiency compared to electric heating units such as smooth tops.
そして、昔ながらの陶器を使用した電気こんろは、電熱
線が外部に直接露出しているため、危険であったり、調
理物の内容物が吹きこぼれて電熱線の断線寿命を著しく
短かくするなど、いろいろな欠点があった。Moreover, electric stoves that use traditional ceramics have heating wires that are directly exposed to the outside, which can be dangerous, and the contents of the cooking material can boil over, significantly shortening the lifespan of the heating wires. There were various shortcomings.
さらに、陶器の熱容量が大きいため１重量的にも重いと
ともに、なかなか冷めにくく、そのため。Furthermore, since ceramics have a large heat capacity, they are heavy in terms of weight and are difficult to cool down.
使用後、すぐに移動したり、あるいは収納することがで
きず、使い勝手の面においても欠点を有していた。After use, it cannot be moved or stored immediately, and it also has a drawback in terms of usability.
このため１本発明者らは、すでに金属板からなる天板と
、螺旋状に巻かれた電熱線と、この電熱線を蛇行状に配
設する溝を有し、かつシリカ−アルミナ繊維を主成分と
する断熱材からなる断熱基盤と、この断熱基盤を収納す
る金属板製の収納ケースとを有し、前記天板の被加熱物
側に放射層を、かつ電熱線側に絶縁層を形成した電熱ユ
ニットを提案している。For this reason, the present inventors have already provided a top plate made of a metal plate, a spirally wound heating wire, and a groove in which the heating wire is arranged in a meandering manner, and which is mainly made of silica-alumina fibers. It has a heat insulating base made of a heat insulating material as a component, and a storage case made of a metal plate that houses the heat insulating base, and a radiation layer is formed on the side of the object to be heated of the top plate, and an insulating layer is formed on the side of the heating wire. We are proposing a new electric heating unit.
発明が解決しようとする課題
しかしながら、断熱基盤としてシリカ−アルミナ繊維を
主成分とする断熱材を用いた従来の電熱ユニットでは、
耐・熱性や断熱性が優れているため、高温で使用されて
も実際の使用上は大きな問題はないものの、断熱材の結
合材としてシリカゾルを使用して製造されているため、
吸湿性に富む。このため、多湿雰囲気中に放置されると
、電気特性の著しい低下が生じるという問題があった。Problems to be Solved by the Invention However, in conventional electric heating units that use a heat insulating material mainly composed of silica-alumina fibers as a heat insulating base,
Because it has excellent heat resistance, heat insulation, and heat insulation properties, there are no major problems in actual use even if it is used at high temperatures, but since it is manufactured using silica sol as a binding material for insulation,
Highly hygroscopic. Therefore, if left in a humid atmosphere, there is a problem in that the electrical characteristics significantly deteriorate.
本発明はこのような問題を解決するもので、多湿雰囲気
中に放置されても電気特性が優れている電熱ユニットを
提供することを目的とするものである。The present invention solves these problems, and aims to provide an electric heating unit that has excellent electrical characteristics even when left in a humid atmosphere.
課題を解決するための手段
上記課題を解艇するために、本発明の電熱ユニットは、
金属板からなる天板と、螺旋状に巻かれた電熱線と、こ
の電熱線を渦巻状に配設する溝を有し、かつシリカ−ア
ルミナ繊維を主成分とし。Means for Solving the Problems In order to solve the above problems, the electric heating unit of the present invention has the following features:
It has a top plate made of a metal plate, a spirally wound heating wire, and a groove in which the heating wire is arranged in a spiral shape, and is mainly composed of silica-alumina fiber.
粘土２よびアルミナゾルを結合材とする断熱材からなる
断熱基盤と、この断熱基盤を収納する金属板製の収納ケ
ースとにより構成したものである。It consists of a heat insulating base made of a heat insulating material with clay 2 and alumina sol as binders, and a storage case made of a metal plate that houses this heat insulating base.
作用
本発明の゛直熱ユニットは、上記したように結合材とし
て吸湿性のきわめて少ないアルミナゾルおよび粘土を使
用し、多湿雰囲気中における′ε電気特性高めたもので
ある。Function: As described above, the direct heating unit of the present invention uses alumina sol and clay, which have extremely low hygroscopicity, as binders, and has improved electrical properties in a humid atmosphere.
ところで、一般的にアルミナゾルを結合材として用いた
ものは、結合材としての作用が劣り、そして得られる断
熱材の機械的強度は、従来のシリカゾルを結合材として
用いたものに比較して劣るが１本発明では粘土を添加す
ることにより、前述した問題解決することができたもの
である。By the way, in general, products using alumina sol as a binder have poor performance as a binder, and the mechanical strength of the resulting heat insulating material is inferior to that of conventional materials using silica sol as a binder. 1. In the present invention, the above-mentioned problem can be solved by adding clay.
以上の理由によシ、ア、ルミナゾルと粘土を結合材とす
る断熱材を用いた電熱ユニットは、多品雰囲気中に放置
されても優れた電気特性を示すものである。For the above reasons, an electric heating unit using a heat insulating material containing lumina sol and clay as a binder exhibits excellent electrical properties even when left in a multi-component atmosphere.
実施例
以下１本発明の具体的な実施例を図面にもとづいて説明
する。EXAMPLES Below, one specific example of the present invention will be described based on the drawings.
図に２いて、５ＵＳ３０４からなる天板１の両面には放
射および吸熱に優れた耐熱塗料が施されている。またシ
リカ−アルミナ繊維を主成分とし。As shown in Fig. 2, both sides of the top plate 1 made of 5US304 are coated with a heat-resistant paint that is excellent in radiation and heat absorption. The main component is silica-alumina fiber.
かつ粘土２よびアルミナゾルを結合材とする断熱材から
なる断熱基盤２には渦巻状の溝２１Ｌが設けられている
。なお、断熱材はあらかじめ８ｏｏ℃で熱処理されて断
熱基盤２として用いられている。A spiral groove 21L is provided in the heat insulating base 2 made of a heat insulating material using clay 2 and alumina sol as binding materials. Note that the heat insulating material is used as the heat insulating base 2 after being heat treated at 80° C. in advance.
また前記断熱基盤２の溝２１ＬＫは螺旋状に巻かれた電
熱線３が配設されている。前記電熱線３を配設した断熱
基盤２はＳ Ｕ Ｓ ３０４よりなる収納ケース４に収
納され、かつこの収納ケース４と天板１とはネジにより
一体化されている。また天板１と断熱基盤２とは若干の
空隙をもたせた状態で一体化されている。そして前記収
納ケース４の下１１Ｊ１１には、絶縁碍子６と電気取り
出し端子６が設けられている。Further, in the groove 21LK of the heat insulating base 2, a spirally wound heating wire 3 is disposed. The heat insulating base 2 on which the heating wire 3 is arranged is housed in a storage case 4 made of SUS 304, and the storage case 4 and the top plate 1 are integrated with screws. Further, the top plate 1 and the heat insulating base 2 are integrated with a slight gap. An insulator 6 and an electrical outlet terminal 6 are provided at the bottom 11J11 of the storage case 4.
このような構成を有する本発明の電熱ユニットの耐湿特
性を調べるために、４０℃で相対湿度９５％の雰囲気中
に１週間投入し、電気絶縁抵抗を測定した。そしてこの
電気絶縁抵抗は、天板１もしくは収納ケース４と電気取
り出し端子６との間で測定した。In order to investigate the moisture resistance characteristics of the electric heating unit of the present invention having such a configuration, it was placed in an atmosphere at 40° C. and 95% relative humidity for one week, and its electrical insulation resistance was measured. The electrical insulation resistance was measured between the top plate 1 or the storage case 4 and the electrical outlet terminal 6.
な２、比較のために従来のシリカゾルを結合材とした断
熱材を断熱基盤２として用いた電熱ユニットについても
測定した。また測定数はいずれも各６台とした。これら
の結果をそれぞれ第１表に示した。2. For comparison, measurements were also taken on an electric heating unit using a conventional heat insulating material with silica sol as a binder as the heat insulating base 2. In addition, the number of measurements was six in each case. These results are shown in Table 1.
（以下余白）
第１表
第１表から明らかなように、シリカゾルを主たる結合材
とする断熱材を使用した試料番号１〜５の従来の電熱ユ
ニットでは、０．１〜１ＭΩと非常に低い電気絶縁抵抗
を示した。(Left below) Table 1 As is clear from Table 1, the conventional electric heating units of sample numbers 1 to 5 that use heat insulating materials with silica sol as the main binder have extremely low electric currents of 0.1 to 1 MΩ. Insulation resistance was shown.
これに対して、アルミナゾルおよび粘土を主たる結合材
とする断熱材を使用した試料番号６〜１０の本発明の電
熱ユニットでは６６〜１００ＭΩと非常に高い電気絶縁
抵抗を示した。On the other hand, the electric heating units of the present invention with sample numbers 6 to 10, which used heat insulating materials whose main binders were alumina sol and clay, exhibited extremely high electrical insulation resistances of 66 to 100 MΩ.
このように１本発明の電熱ユニットは、耐湿特性に優れ
ているため、多湿雰囲気中に放置されても極めて高い電
気特性を示すものである。As described above, since the electric heating unit of the present invention has excellent moisture resistance, it exhibits extremely high electrical characteristics even when left in a humid atmosphere.
な３１本発明め実施例に２いては、断熱材をあらかじめ
８００℃で熱処理したものを用いたが。In Example 2 of the present invention, the heat insulating material was heat-treated at 800° C. in advance.
特にこの温度での熱処理に限定されるものではなく、一
般的に、断熱材の結晶化が生じる温度以下で、熱処理す
るほうが、耐湿特性に優れているものである。The heat treatment is not particularly limited to this temperature, but in general, heat treatment at a temperature below the temperature at which the heat insulating material crystallizes provides better moisture resistance.
発明の効果
上記実施例の説明から明らかなように本発明によれば、
金属板からなる天板と、螺旋状に巻かれた電熱線と、こ
の電熱線を渦巻状に配設する溝を有し、かつシリカ−ア
ルミナ繊維を主成分とし。Effects of the Invention As is clear from the description of the above embodiments, according to the present invention,
It has a top plate made of a metal plate, a spirally wound heating wire, and a groove in which the heating wire is arranged in a spiral shape, and is mainly composed of silica-alumina fiber.
粘土ｐよびアルミナゾルを結合材とする断熱材からなる
断熱基盤と、この断熱基盤を収納する金属板製の収納ケ
ースとにより構成しているため、多湿雰囲気中に放置さ
れても電気特性が優れている電熱ユニットを提供するこ
とができるものである。It consists of a heat insulating base made of a heat insulating material using clay p and alumina sol as a binder, and a storage case made of a metal plate that houses this heat insulating base, so it has excellent electrical properties even when left in a humid atmosphere. It is possible to provide an electric heating unit that is
図は本発明の一実施例を示す電熱ユニットの断面図であ
る。
１・・・・・・天板、２・・・・・・断熱基盤、２ａ・
・・・・・溝、３・・・・電熱線、４・・・・・・収納
ケース。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名 −
ｍ−
？−−−
２α−・−
−一
天 販
断＋１’ｌ’暮盤
溝
ｆｒ！！′Ｌ均
収納ケースThe figure is a sectional view of an electric heating unit showing an embodiment of the present invention. 1...Top plate, 2...Insulation base, 2a.
...Groove, 3...Heating wire, 4...Storage case. Name of agent: Patent attorney Shigetaka Awano and 1 other person −
m-? --- 2α-・- -Itten sale + 1'l' Kurebamizo fr! ! 'L storage case
Claims (1)
の電熱線を渦巻状に配設する溝を有し、かつシリカ−ア
ルミナ繊維を主成分とし、粘土およびアルミナゾルを結
合材とする断熱材からなる断熱基盤と、この断熱基盤を
収納する金属板製の収納ケースとにより構成した電熱ユ
ニット。It has a top plate made of a metal plate, a spirally wound heating wire, and a groove in which the heating wire is arranged in a spiral shape, and the main component is silica-alumina fiber, and clay and alumina sol are used as a binder. This electric heating unit consists of a heat insulating base made of a heat insulating material and a storage case made of a metal plate that houses the heat insulating base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29268488A JPH02139888A (en) | 1988-11-18 | 1988-11-18 | Electric heating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29268488A JPH02139888A (en) | 1988-11-18 | 1988-11-18 | Electric heating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02139888A true JPH02139888A (en) | 1990-05-29 |
Family
ID=17784964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29268488A Pending JPH02139888A (en) | 1988-11-18 | 1988-11-18 | Electric heating unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02139888A (en) |
-
1988
- 1988-11-18 JP JP29268488A patent/JPH02139888A/en active Pending
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