JPH03266387A - Face heating element - Google Patents
Face heating elementInfo
- Publication number
- JPH03266387A JPH03266387A JP6318290A JP6318290A JPH03266387A JP H03266387 A JPH03266387 A JP H03266387A JP 6318290 A JP6318290 A JP 6318290A JP 6318290 A JP6318290 A JP 6318290A JP H03266387 A JPH03266387 A JP H03266387A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- heating element
- resistance
- heat
- inorganic binder
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 22
- 239000011230 binding agent Substances 0.000 claims abstract description 31
- 239000011810 insulating material Substances 0.000 claims abstract description 27
- 238000002788 crimping Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 abstract description 5
- 238000007254 oxidation reaction Methods 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 229920001296 polysiloxane Polymers 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Surface Heating Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電気湯沸し器などに組み込まれる面状発熱体
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a sheet heating element incorporated into an electric water heater or the like.
従来の技術
近年、電気ジャーポットなどの電気湯沸し器は一般家庭
での必需品にまで普及しているが、長時間の使用が一般
的であり、耐久性や安全性に関してより高い品質のもの
が求められている。Conventional technology In recent years, electric water heaters such as electric kettles have become common household necessities, but as they are commonly used for long periods of time, there is a need for higher quality products in terms of durability and safety. It is being
従来、この種の面状発熱体においては、第３図に示すよ
うに、箔状の抵抗体１６と絶縁材１７゜１８との挟み圧
着および、各絶縁材１７．１８自体を構成する個々の積
層板どうしの接着には、ジノコン系のバインダーが用い
られていた。Conventionally, in this type of sheet heating element, as shown in FIG. Ginocon binder was used to bond the laminates together.
発明が解決しようとする課題
このような従来の面状発熱体では、抵抗体］６が通電さ
れて発熱し、シリコン系のバインダーの耐熱温度以上（
約３００℃〜４００℃以上）になった場合、抵抗体１６
とその抵抗体１６の上下両面を覆っている絶縁材１７．
１８および絶縁材１７．１８自体を構成する積層板どう
しが過熱によって外れ、抵抗体１６が絶縁材１７．１８
の間で移動して耐久性能や絶縁耐圧などの電気特性が悪
化する恐れがあった。Problems to be Solved by the Invention In such a conventional planar heating element, the resistor 6 generates heat when energized, and exceeds the heat resistance temperature of the silicone binder (
(approximately 300℃ to 400℃ or higher), the resistor 16
and an insulating material 17 covering both upper and lower surfaces of the resistor 16.
18 and the insulating material 17.18 themselves are separated due to overheating, and the resistor 16 is separated from the insulating material 17.18.
There was a risk that electrical properties such as durability and dielectric strength would deteriorate due to movement between the parts.
本発明は、上記課題を解決するもので、耐久性能や耐電
気特性の優れた面状発熱体を提供することを目的として
いる。The present invention solves the above problems, and aims to provide a planar heating element with excellent durability and electrical resistance.
課題を解決するための手段
上記目的を達成するために本発明の面状発熱体は、抵抗
体の上下両面をポリカルボチタンを主成分とする無機質
系のバインダーを介して絶縁材で挟み圧着させて構成し
たものである。絶縁は各々複数の積層板で構成され、こ
の複数の積層板をポリカルボチタンを主成分とする無機
質系のバインダーを介して接着してなるものである。Means for Solving the Problems In order to achieve the above object, the planar heating element of the present invention is made by sandwiching and crimping the upper and lower surfaces of a resistor with an insulating material via an inorganic binder mainly composed of polycarbotitanium. It is composed of Each of the insulations is composed of a plurality of laminates, and the plurality of laminates are bonded together via an inorganic binder containing polycarbotitanium as a main component.
作用
本発明は上記した構成において、ポリカルボチタンを主
成分とする無機質系のバインダーは耐熱温度および耐電
気特性がシリコン系を主成分とするバインダーより優れ
ているため、抵抗体が発熱し、シリコン系のバインダー
の耐熱温度以上になった場合でもバインダーの接合特性
を維持し、その抵抗体はその上下両面を圧着状態で覆っ
ている絶縁材とで外れおよび、移動を生ずることがない
のである。Effect of the present invention In the above-described configuration, the inorganic binder containing polycarbotitanium as the main component has superior temperature resistance and electrical resistance properties than the binder containing silicon as the main component, so the resistor generates heat and the silicon Even when the temperature exceeds the heat resistance temperature of the binder in the system, the bonding properties of the binder are maintained, and the resistor does not come off or move due to the insulating material covering the upper and lower surfaces of the resistor in a crimped state.
また、前記特性を有する無機質系のバインダーでそれぞ
れの積層板を接着して絶縁材にしているので抵抗体が発
熱してシリコン系のバインダーの耐熱温度以上になって
も絶縁材の各積層板はその発熱によってはがれや移動が
生ぜず絶縁材のもとの形状、特性を維持するのである。In addition, each laminate is bonded to an insulating material using an inorganic binder having the above characteristics, so even if the resistor generates heat and exceeds the heat resistance temperature of the silicone binder, each laminate of insulating material will remain intact. The heat generated prevents the insulating material from peeling or moving and maintains its original shape and properties.
実施例
以下、本発明の一実施例について第１図および第２図を
参照しながら説明する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2.
図において、１は伝熱板で中央部に略り字形状の突出部
１ｂをもち、その外周に周側部縁１ａを形成している。In the figure, reference numeral 1 denotes a heat transfer plate which has an abbreviated protrusion 1b in the center and a circumferential side edge 1a on its outer periphery.
この伝熱板１の外周部を金属製の容器２の下端に液密に
溶接などの手段で固着している。前記伝熱板１の突出部
１ｂの下面には平板状の良熱伝導性のたとえばアルミニ
ュウム板とか表面処理鋼板などよりなる熱伝導板４を介
して発熱体部５が装着されている。この発熱体部５はた
とえば箔状の抵抗体６と絶縁材７，８とで構成されてい
る。前記抵抗体６は、その上下両面を耐熱性、耐電気特
性に優れたポリカルボチタンを主成分とする無機質系ま
たは下表に示す■〜■の無機質系のバインダーを介して
前記絶縁材７．８で挾み、たとえば高圧プレスなどで圧
着し、一体に形成されている。The outer periphery of this heat transfer plate 1 is fixed to the lower end of a metal container 2 in a liquid-tight manner by means such as welding. A heating element portion 5 is attached to the lower surface of the protruding portion 1b of the heat transfer plate 1 via a heat conduction plate 4 made of a flat plate with good thermal conductivity, such as an aluminum plate or a surface-treated steel plate. This heating element portion 5 is composed of, for example, a foil-like resistor 6 and insulating materials 7 and 8. The resistor 6 is coated with the insulating material 7 on both upper and lower surfaces thereof through an inorganic binder mainly composed of polycarbotitanium, which has excellent heat resistance and electrical resistance, or an inorganic binder shown in the table below. 8 and pressed together using, for example, a high-pressure press, to form a single piece.
（以 下 余 白 ）
前記熱伝導板４９発熱体部５および熱拡散板９は中央に
透孔を有しこれらは、中央部を上方へ突出させ外周側部
］、 Ｏａを形成し中央に透孔を有する表面処理鋼板な
どの良熱伝導性の背面材１０により、前記伝導板１の突
出部１ｂ下面に押え付けるように装着されている。なお
、３は容器２を空間を介して包む外装体、１１は抵抗体
６のリード、１２は温度検知用のセンサで伝熱板ｌの突
出部１ｂ中央下面に当接して伝熱板ｌを介して容器ｌ内
の液温を検知している。(Left below) The heat conduction plate 49, the heating element part 5 and the heat diffusion plate 9 have a through hole in the center, and the center part projects upward to form an outer circumferential side], and a transparent hole in the center. It is mounted so as to be pressed against the lower surface of the protrusion 1b of the conductive plate 1 by a backing material 10 having good thermal conductivity such as a surface-treated steel plate having holes. In addition, 3 is an exterior body that encloses the container 2 through a space, 11 is a lead of the resistor 6, and 12 is a sensor for detecting temperature, which is in contact with the central lower surface of the protruding part 1b of the heat exchanger plate l, and is connected to the heat exchanger plate l. The temperature of the liquid inside the container l is detected through the sensor.
上記構成において動作を説明する。リード１１を介して
抵抗体６に通電がなされると、容器２内の液体は抵抗体
６の発熱により、絶縁板７，８および伝熱板１を介して
加熱される。このとき抵抗体６の表面温度はたとえば約
３００℃前後である。液体がなくなって容器２がから焼
状態となると、センサ１２が伝熱板１の過昇温度を検知
して抵抗体６の通電を制御するが、発熱体６はそのとき
約４００℃前後に達している。抵抗体６は入力電圧やそ
の他加工組立てのばらつきによってその表面温度が上昇
するが、バインダーの耐熱温度が約４００℃前後である
と、長期の使用で抵抗体６と絶縁材７，８の接合力か弱
（なってくるとともに、バインダーが飛んで抵抗体６と
絶縁材７，８の間にすき間などを生じ、抵抗体６自体の
酸化によるやせ細り、および抵抗体６どうしの移動によ
る短絡など電気的に好ましくない結果を生じてくる。し
たがって、抵抗体６と絶縁材７，８の間のバインダーは
上記の考慮を行って抵抗体６が生ずると考えられる最高
温度に余裕を付加することが好ましい。The operation in the above configuration will be explained. When the resistor 6 is energized via the lead 11, the liquid in the container 2 is heated through the insulating plates 7, 8 and the heat transfer plate 1 due to the heat generated by the resistor 6. At this time, the surface temperature of the resistor 6 is, for example, about 300°C. When the liquid runs out and the container 2 becomes dry, the sensor 12 detects the excessive temperature rise of the heat exchanger plate 1 and controls the energization of the resistor 6, but the heating element 6 reaches about 400°C at that time. ing. The surface temperature of the resistor 6 increases due to variations in input voltage and other processing and assembly, but if the binder has a heat resistance temperature of around 400°C, the bonding strength between the resistor 6 and the insulating materials 7 and 8 will decrease over a long period of use. As it becomes weaker, the binder flies off and creates gaps between the resistor 6 and the insulating materials 7 and 8, causing electrical problems such as thinning of the resistor 6 itself due to oxidation and short circuits due to movement of the resistors 6. Therefore, it is preferable that the binder between the resistor 6 and the insulating materials 7 and 8 takes the above consideration into account and adds a margin to the maximum temperature at which the resistor 6 is expected to reach.
そこで各種実験の結果、この種のバインダーは接着性が
良好で耐熱性および耐電気特性が従来の倍近くを有する
ポリカルボチタンを主成分とする無機質系のバインダー
またはこれに類似する特性の前夫に示す無機質系バイン
ダーの適用をみいだした。この無機質のバインダーを用
いることによって、その優れた特性から抵抗体６がたと
え容器２のから焼などによる異常加熱を生じても、長期
使用に渡って抵抗体６とその上下面の絶縁材７．８とは
剥離がなく、その結果、抵抗体６どうしの移動による短
絡や、酸化断線などのない耐久性に優れた面状発熱体と
なる。As a result of various experiments, we found that this type of binder has good adhesion, heat resistance and electrical resistance properties that are nearly double that of conventional binders, or an inorganic binder with similar properties. We have found the application of the inorganic binder shown below. By using this inorganic binder, due to its excellent properties, even if the resistor 6 experiences abnormal heating due to roasting of the container 2, the resistor 6 and the insulating material 7 on its upper and lower surfaces can be used for a long period of time. 8, there is no peeling, and as a result, a planar heating element with excellent durability is obtained, which is free from short circuits due to movement of the resistors 6 and oxidation disconnections.
また、絶縁材７，８が各々複数の積層板で構成されたも
のでは、前記のポリカルボチタンなどを主成分とする無
機質系のバインダーによって各積層板どうしを接合する
ことにより、抵抗体６が前記の異常加熱を生じても、絶
縁材７，８各々の接合間でゆるみが生づることもなく、
その結果、絶縁材７，８は抵抗体６を常に挟持状態に保
ち、抵抗体６と絶縁材７，８間にすき間を与えず、抵抗
体６どうしの移動や酸化断線を促進させることがない。In addition, when the insulating materials 7 and 8 are each composed of a plurality of laminated plates, the resistor 6 can be formed by bonding the laminated plates together with an inorganic binder whose main component is polycarbotitanium or the like. Even if the above-mentioned abnormal heating occurs, there is no loosening between the joints of the insulating materials 7 and 8, and
As a result, the insulating materials 7 and 8 always keep the resistor 6 in a sandwiched state, and there is no gap between the resistor 6 and the insulating materials 7 and 8, which prevents movement of the resistors 6 and oxidation breakage. .
発明の効果
以上の実施例の説明から明らかなように本発明の面状発
熱体によれば、抵抗体の上下両面をポリカルボチタンを
主成分とする無機質系のバインダーを介して絶縁材で挟
み圧着しているので、抵抗体が発熱し従来のシリコン系
のバインダーの耐熱温度以上になった場合でもその無機
質系バインダーの優れた耐熱特性により抵抗体と絶縁材
との剥離などを生ずることがな（、その結果抵抗体どう
しの移動による短絡や、酸化による断線が防止されて耐
久性や耐電気特性を向上させることができる。Effects of the Invention As is clear from the above description of the embodiments, according to the planar heating element of the present invention, the upper and lower surfaces of the resistor are sandwiched between insulating materials via an inorganic binder containing polycarbotitanium as a main component. Because it is crimped, even if the resistor generates heat and reaches a temperature higher than that of conventional silicone binders, the excellent heat resistance properties of the inorganic binder prevent the resistor from peeling off from the insulating material. (As a result, short circuits due to movement of resistors and disconnections due to oxidation are prevented, and durability and electrical resistance characteristics can be improved.
また、絶縁材を各々複数の積層板によって構成し、積層
板どうしを前記の無機質系バインダーによって接着する
ことにより、抵抗体がシリコン系バインダーの耐熱温度
以上になっても絶縁材はそれぞれの接着部分でゆるみを
生ずることがなく、その結果、絶縁°材は抵抗体を常に
挟持状態に保ち、上記同様に従来に比し優れた耐久性お
よび耐電気特性を生みだすのである。さらに、このよう
な無機質系のバインダーを用いることにより、抵抗体の
発熱温度を従来以上に上げることができるため、抵抗体
はワット密度を大きくして、消費電力を高めたり、また
逆に小型の面状発熱体とすることも可能となる。In addition, by configuring each insulating material from a plurality of laminates and bonding the laminates to each other using the above-mentioned inorganic binder, even if the resistor exceeds the heat resistance temperature of the silicone binder, the insulating material remains at each bonded portion. As a result, the insulating material always keeps the resistor in a sandwiched state, producing superior durability and electrical resistance properties compared to conventional materials, as described above. Furthermore, by using such an inorganic binder, it is possible to raise the heat generation temperature of the resistor higher than before, so the watt density of the resistor can be increased, increasing power consumption, or conversely, it is possible to increase the watt density of the resistor and increase the power consumption. It is also possible to use a planar heating element.
第１図は本発明の面状発熱体の分解斜視図、第２図は同
発熱体部を装着した電気湯沸し器の要部断面図、第３図
は従来の面状発熱体の分解斜視図である。
６・・・・・・抵抗体、７，８・・・・・・絶縁材。Fig. 1 is an exploded perspective view of a planar heating element of the present invention, Fig. 2 is a sectional view of essential parts of an electric water heater equipped with the heating element, and Fig. 3 is an exploded perspective view of a conventional planar heating element. It is. 6...Resistor, 7,8...Insulating material.
Claims (2)
する無無機系のバインダーを介して絶縁材で挟み圧着さ
せてなる面状発熱体。(1) A planar heating element made by sandwiching and crimping the upper and lower surfaces of a resistor between insulating materials via an inorganic binder mainly composed of polycarbotitanium.
１記載の面状発熱体。(2) The planar heating element according to claim 1, wherein the insulating material is composed of a plurality of laminated plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6318290A JPH03266387A (en) | 1990-03-14 | 1990-03-14 | Face heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6318290A JPH03266387A (en) | 1990-03-14 | 1990-03-14 | Face heating element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03266387A true JPH03266387A (en) | 1991-11-27 |
Family
ID=13221848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6318290A Pending JPH03266387A (en) | 1990-03-14 | 1990-03-14 | Face heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03266387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008103207A (en) * | 2006-10-19 | 2008-05-01 | Panasonic Ev Energy Co Ltd | Heater with temperature detection device and battery structure with heater |
-
1990
- 1990-03-14 JP JP6318290A patent/JPH03266387A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008103207A (en) * | 2006-10-19 | 2008-05-01 | Panasonic Ev Energy Co Ltd | Heater with temperature detection device and battery structure with heater |
| US8367973B2 (en) | 2006-10-19 | 2013-02-05 | Panasonic Ev Energy Co., Ltd. | Heater with temperature detecting device and battery structure with the heater |
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