JPH03127480A - Flat type heater - Google Patents
Flat type heaterInfo
- Publication number
- JPH03127480A JPH03127480A JP26446589A JP26446589A JPH03127480A JP H03127480 A JPH03127480 A JP H03127480A JP 26446589 A JP26446589 A JP 26446589A JP 26446589 A JP26446589 A JP 26446589A JP H03127480 A JPH03127480 A JP H03127480A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- heating element
- sensor
- temperature sensor
- planar
- 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 claims abstract description 56
- 239000000463 material Substances 0.000 claims description 13
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 239000011810 insulating material Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 6
- 229920006267 polyester film Polymers 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000011342 resin composition Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 229910001120 nichrome Inorganic materials 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Landscapes
- Surface Heating Bodies (AREA)
- Control Of Resistance Heating (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、自己温度調節機能を有する面状ヒータに関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a planar heater having a self-temperature regulating function.
従来の面状ヒータとしては、ガラス布やポリエステルフ
ィルムなどの絶縁基材上にカーボンプラク／ポリマー系
の導電性ペーストを塗布、含浸した面状発熱体に、銅テ
ープや銀の導電塗料などからなる金属電極を互いに対峙
するように設けたものがしられている。また、絶縁基材
上にニクロム線などの金属抵抗線を這して配したものも
知られている。Conventional planar heaters consist of a planar heating element coated and impregnated with carbon plaque/polymer-based conductive paste on an insulating substrate such as glass cloth or polyester film, and then coated with copper tape, silver conductive paint, etc. It is known that metal electrodes are provided facing each other. Also known are those in which a metal resistance wire such as a nichrome wire is placed on an insulating base material.
このような面状ヒータにあっては、異状時に面状ヒータ
の温度を一定温度以下に制御する必要があり、このため
面状発熱体を適当な広さの領域、例えば３０ｃｍＸ３０
ｃｍの領域に区分し、これら領域のそれぞれの中央部な
どに温度センサを配置し、その領域の温度を検知し、こ
の温度センサからの信号によって温度制御を行う方法が
採られている。In such a planar heater, it is necessary to control the temperature of the planar heater below a certain temperature when an abnormality occurs, and for this purpose, the planar heating element is placed in an area of an appropriate size, for example, 30cm x 30cm.
A method is adopted in which the area is divided into areas of cm, a temperature sensor is placed in the center of each of these areas, the temperature of the area is detected, and the temperature is controlled based on the signal from the temperature sensor.
したがって、広い領域の一個所のみでの温度制御となる
ため、該領域中での局所的な異常発熱の検知には十分と
は言えず、また広い面状発熱体では、多数の温度センサ
とその制御回路が必要となる不都合があった。Therefore, temperature control is performed only at one location in a wide area, which is not sufficient for detecting localized abnormal heat generation in the area. This has the disadvantage of requiring a control circuit.
このため、このような付属機基を必要としない面状ヒー
タとして、正温度係数特性（ＰＴＣ特性）を有する面状
発熱体を用いたものが提案されている。Therefore, as a planar heater that does not require such an accessory unit, a planar heater using a planar heating element having positive temperature coefficient characteristics (PTC characteristics) has been proposed.
しかし、この正温度係数特性を有する面状発熱体を用い
たものでは、均一な温度分布が得られず、面状発熱体の
一部の部位に電圧が集中して温度が上昇し、「ホットゾ
ーン」が形成されて十分な電力が得られなくなり、さら
には面状発熱体の破壊に致るなどの不都合もある。However, when using a planar heating element with positive temperature coefficient characteristics, a uniform temperature distribution cannot be obtained, and the voltage concentrates on some parts of the planar heating element, causing the temperature to rise, resulting in a "hot" There are also disadvantages such as the formation of a "zone", making it impossible to obtain sufficient electric power, and furthermore, the sheet heating element may be destroyed.
よって、この発明における課題は、異常時の温度制御に
多数の温度センサやその制御回路などの温度制御用機器
を必要とせず、全体の構成が簡単であり、かつ全体が均
一に発熱し、温度のバラツキの少ない面状ヒータを得る
ことにある。Therefore, an object of this invention is to eliminate the need for temperature control equipment such as a large number of temperature sensors and their control circuits for temperature control during abnormal conditions, to simplify the overall configuration, and to ensure that the entire unit generates heat uniformly and maintains temperature control. The object of the present invention is to obtain a planar heater with less variation.
この発明では、一対の電極を有する面状発熱体と、この
面状発熱体の電極間上に配置された正温度係数特性を有
する材料からなる温度センサと、前記面状発熱体の少な
くとも片面を被覆する均熱部材を有し、
前記面状発熱体と温度センサとを直列に接続したものを
面状ヒータとすることによって、上記課題を解決するよ
うにした。The present invention includes a planar heating element having a pair of electrodes, a temperature sensor made of a material having a positive temperature coefficient and disposed between the electrodes of the planar heating element, and at least one side of the planar heating element. The above-mentioned problem is solved by providing a planar heater which has a heat equalizing member for covering and connects the planar heating element and a temperature sensor in series.
このような構成によれば、面状発熱体の一部が何らかの
原因、例えば断熱性物質が置かれるなどの理由で、異常
に昇温したとしても、この部分的昇温は均熱部材によっ
て速やかにその近傍の温度センサに伝わり、該温度セン
サのその部分の温度が上昇する。温度センサは、このｌ
Ｑ度上昇に伴い、正温度係数特性によってその抵抗値が
増大する。According to such a configuration, even if a part of the sheet heating element becomes abnormally heated due to some reason, such as a heat insulating material being placed on it, this partial temperature rise can be quickly corrected by the heat equalizing member. The temperature is transmitted to the nearby temperature sensor, and the temperature of that part of the temperature sensor increases. The temperature sensor
As the Q degree increases, its resistance value increases due to positive temperature coefficient characteristics.
この結果、面状発熱体と温度センサとは直列に接続され
ているので、温度センサは電流制御素子として働き、回
路に流れる電流が減少し、面状発熱体の昇温が停止する
ことになり、温度を自己制御することができる。As a result, since the sheet heating element and the temperature sensor are connected in series, the temperature sensor acts as a current control element, reducing the current flowing through the circuit and stopping the temperature rise of the sheet heating element. , the temperature can be self-controlled.
第１図ないし第３図は、この発明の面状ヒータの一例を
示すもので、図中符号１は面状発熱体である。1 to 3 show an example of a planar heater of the present invention, and reference numeral 1 in the figures indicates a planar heating element.
この面状発熱体１は、ポリエステルフィルムなどの樹脂
フィルムやガラス布などの絶縁性基材の表面にカーボン
ブラック／ポリマー系の導電性ペーストを塗布あるいは
含浸したものや絶縁性基材の表面にニクロム線などの金
属抵抗線を均等に這わせて設け、この上に絶縁性被覆を
設けたものなどが用いられる。この面状発熱体１の外観
は、第２図に示すように矩形状であって、その一方の表
面の両側縁部には帯状の１対の金属電極２．２が面状発
熱体ｌの長平方向に沿って設けられている。This sheet heating element 1 is made by coating or impregnating carbon black/polymer-based conductive paste on the surface of an insulating base material such as a resin film such as a polyester film or glass cloth, or by coating or impregnating the surface of an insulating base material with nichrome. A metal resistance wire, such as a wire, is laid out evenly and an insulating coating is provided on top of the wire. The appearance of the sheet heating element 1 is rectangular as shown in FIG. It is provided along the long horizontal direction.
金属電極２は、銅箔などの金属薄膜からなり、導通状態
で面状発熱体１に接合されており、この例では面状発熱
体ｌの長平方向の長さと同一の長さを有している。The metal electrode 2 is made of a metal thin film such as copper foil, and is electrically connected to the planar heating element 1, and in this example has the same length as the length of the planar heating element l in the longitudinal direction. There is.
この金属電極２，２が設けられた面状発熱体ｌは、ポリ
エステルフィルムなどの絶縁材料３で、その全体が緊密
に被覆されて絶縁状態となっている。The planar heating element 1 provided with the metal electrodes 2, 2 is completely covered with an insulating material 3 such as a polyester film and is insulated.
また、この絶縁材料３で被覆された状態の面状発熱体１
の短手方向のほぼ中央には、帯状の温度センサ４が設け
られている。この温度センサ４は第３図に示すように正
１品度係数特性（以下、ＰＴＣ特性と言う。）を示すポ
リマーからなる帯状のエレメント５と、この帯状のエレ
メント５内に導通状態で互に平行に埋設された一対のワ
イヤ電極６．６とからなるものである。ＰＴＣ特性を示
すポリマーとは、例えばポリオレフィン系ポリマーに適
量のカーボンブラックを添加した樹脂組成物なとを言い
、この樹脂組成物を帯状のンートに成形加工したものが
エレメント５として使用される。Further, the sheet heating element 1 covered with this insulating material 3
A band-shaped temperature sensor 4 is provided approximately at the center in the lateral direction. As shown in FIG. 3, this temperature sensor 4 has a band-shaped element 5 made of a polymer that exhibits a positive 1 quality coefficient characteristic (hereinafter referred to as PTC characteristic), and a band-shaped element 5 that is electrically connected to each other in a conductive state. It consists of a pair of wire electrodes 6.6 buried in parallel. The polymer exhibiting PTC characteristics is, for example, a resin composition prepared by adding an appropriate amount of carbon black to a polyolefin polymer, and this resin composition is used as the element 5 by molding it into a belt-like belt.
また、ワイヤ電極６には、銅線などの金属線条体が用い
られる。また、この温度センサ４は前記絶縁材料３に接
着剤なとによって一体に固着されている。Furthermore, the wire electrode 6 is made of a metal wire such as a copper wire. Further, this temperature sensor 4 is integrally fixed to the insulating material 3 with an adhesive or the like.
さらに、この温度センサ４が設けられた面状発熱体１は
、アルミニウム箔、銅箔などの良伝熱性材料からなる均
熱部材７でその全体が緊密に被覆されて面状ヒータとさ
れている。この均熱部材７は、面状発熱体１の発熱のバ
ラツキを均一化するとともに面状発熱体１の温度を速や
かに温度センサ４に１云えるためのものである。Further, the planar heating element 1 provided with the temperature sensor 4 is tightly covered in its entirety with a heat equalizing member 7 made of a material with good heat conductivity such as aluminum foil or copper foil, thereby forming a planar heater. . This heat equalizing member 7 is used to equalize the variation in heat generation of the planar heating element 1 and to quickly inform the temperature sensor 4 of the temperature of the planar heating element 1.
この１Ｊｎｉ状ヒータはさらに必要に応じてｌａ ＩＱ
物、プラスチックフィルムなどの絶縁性材料で彼葭され
ることもある。This 1Jni-shaped heater can be further adjusted as required.
It may also be covered with insulating materials such as objects or plastic films.
そして、第２図に示すように温度センサ４の一方のワイ
ヤ電極６は面状発熱体ｌの一方の金属電極２に接続され
、温度センサ４の他方のワイヤ金属６は商用電源なとの
電源Ａを介して面状発熱体ｌの他方の金属電極に接続さ
れ、すなわち面状発熱体１と温度センサ４とは電源へに
対して直列に接続されて使用に供されることになる。As shown in FIG. 2, one wire electrode 6 of the temperature sensor 4 is connected to one metal electrode 2 of the planar heating element l, and the other wire metal 6 of the temperature sensor 4 is connected to a power source such as a commercial power source. A is connected to the other metal electrode of the sheet heating element 1, that is, the sheet heating element 1 and the temperature sensor 4 are connected in series to a power source for use.
このような面状ヒータにあっては、温度センサ４がメ晶
度セン／ングおよび温度コントロールの役割を果し、自
己温度調節機能を有するものとなる。In such a planar heater, the temperature sensor 4 plays the role of crystallinity sensing and temperature control, and has a self-temperature adjustment function.
例えば、面状発熱体１の一部または全体に断熱性物質（
座布団、家具などの放熱を妨げるものを言う。）が置か
れると、この断熱性物質によって覆われた部分の面状発
熱体ｌの温度が上昇する。この面状発熱体１の児常昇温
は、均熱部材７によって、速やかにその近傍の温度セン
サ４に伝えられ１、温度センサ４の温度が上昇する。こ
の温度センサ１１の温度上昇は、そのＰＴＣ特性に基い
てエレメント５の電気抵抗の増大をもたらす。そして、
温度センサ４と面状発熱体１とは電源Ａに対して直列に
接続されているので、温度センサ４の電気抵抗の均太に
よって回路を流れる電流が減少し、面状発熱体１の発熱
量も減少してその温度上昇が停止する。For example, a heat insulating material (
Refers to things that impede heat radiation, such as cushions and furniture. ) is placed, the temperature of the sheet heating element l covered by this heat insulating material rises. This normal temperature rise of the planar heating element 1 is quickly transmitted to the nearby temperature sensor 4 by the equalizing member 7, and the temperature of the temperature sensor 4 rises. This temperature increase in the temperature sensor 11 causes an increase in the electrical resistance of the element 5 based on its PTC characteristics. and,
Since the temperature sensor 4 and the sheet heating element 1 are connected in series to the power source A, the electric resistance of the temperature sensor 4 is uniform, so the current flowing through the circuit is reduced, and the amount of heat generated by the sheet heating element 1 is reduced. decreases and the temperature rise stops.
また、この例の面状ヒータでは、メ品度センサ４が帯状
であって、面状発へ体１の長手方向に平行にその全長に
わた・〕で設けられているので、１つの温度センサ４の
みで、面状発熱体Ｉ全体の５”４常青、’ｔａを検知す
ることかできる。さらに、温度センサ４のエレメント５
としてＰＴＣ特性を有すポリマーを用いているので、温
度センサ４自体が可撓性を有するものとなり、面状発熱
体１に可撓性のものを使用すれば、面状ヒータも可撓性
となって取扱いが容易となり、面状ヒータの布設も簡単
に行える。In addition, in the sheet heater of this example, the quality sensor 4 is strip-shaped and is provided parallel to the longitudinal direction of the sheet heater 1 over its entire length. 4 alone, it is possible to detect the 5"4 'ta of the entire sheet heating element I.Furthermore, the element 5 of the temperature sensor 4 can be detected.
Since a polymer having PTC characteristics is used as the material, the temperature sensor 4 itself becomes flexible, and if a flexible material is used for the sheet heating element 1, the sheet heater also becomes flexible. This makes it easy to handle, and the installation of the planar heater can be done easily.
また、上述の実施例ではｔｉ１度センサ４は１つである
が２つ以上の〆１込度センサを用いてちよく、当然これ
らの温度センサもすべて面状発熱体ｌと直列に接続され
る。また、面状発熱体ｌ上の金属電極２．２とほぼ平行
にかつ面状発熱体ｌの中央に配置したが、これに限られ
ることもない。さらに、均熱部材７は面状発熱体１のい
ずれか一方の面に設けるだけでも十分である。Further, in the above embodiment, there is one temperature sensor 4, but two or more temperature sensors may be used, and naturally all of these temperature sensors are connected in series with the sheet heating element l. . Further, although the metal electrode 2.2 on the sheet heating element 1 is arranged substantially parallel to the metal electrode 2.2 and at the center of the sheet heating element 1, the present invention is not limited thereto. Furthermore, it is sufficient to provide the heat equalizing member 7 on either one surface of the planar heating element 1.
以下、具体例を示す。A specific example will be shown below.
第１図ないし第３図に示した面状ヒータを作った。面状
発熱体ｌとしてポリエステルフィルムの絶縁基村上に高
導電性カーボン微粒子をポリエステル系ワニスに均一に
分散した導電性ベーストを全面に塗布、焼付してなるも
のを用い、温度センサ４としてアイオノマー樹脂にアセ
チレンブラックを２５重量％と、少量の老化防止剤を添
加してなる樹脂組成物を押出成形して厚さ１１のシート
としたものをエレメント５とし、このエレメント中に径
０ 、３ ｍｍの軟銅線を２本手行に埋設したしのを用
い、金属電極２として厚さ５０μｍのスズメツキ鋼屑を
用いた。面状発熱体ｌを１皮覆する絶縁材料３には、厚
さ０．３１のポリエステルフィルムを用い、均熱部材７
には厚さ５０μｍのアルミニウム箔を用いて、縦２５０
ｍｍ１横５００ｍｍの面状ヒータを作成した。The planar heater shown in FIGS. 1 to 3 was made. The planar heating element 1 is made by applying and baking a conductive base material in which highly conductive carbon fine particles are uniformly dispersed in a polyester varnish onto the insulating base material of a polyester film, and the temperature sensor 4 is made of an ionomer resin. Element 5 is a sheet with a thickness of 11 formed by extrusion molding a resin composition made by adding 25% by weight of acetylene black and a small amount of anti-aging agent. A wire was used in which two wires were embedded in a row, and as the metal electrode 2, scrap steel with a thickness of 50 μm was used. A polyester film with a thickness of 0.31 mm is used as the insulating material 3 that covers the sheet heating element 1, and the heat equalizing member 7
Using aluminum foil with a thickness of 50 μm,
A planar heater with a width of 500 mm (mm1) was created.
次いで、第４図に示すようにこの面状ヒータ１１を厚さ
５０ｍｍのウレタンフオーム２０上に置き、交流５０）
１ｚ、１００Ｖの電圧を通電して発熱させた。この際、
温度センサ４の中央部および面状発熱体ｌの温度を熱電
対でそれぞれ測定した。Next, as shown in FIG. 4, this planar heater 11 was placed on a urethane foam 20 with a thickness of 50 mm, and an AC 50)
1z, a voltage of 100V was applied to generate heat. On this occasion,
The temperatures of the central part of the temperature sensor 4 and the planar heating element 1 were measured using thermocouples.
通電後１２分経過したのち、面状ヒータＩＩの全面−Ｌ
に厚さ５０＋ｎｍのウレタンフオーム２１を新たに載せ
て異常昇温状態とした。After 12 minutes have passed after energization, the entire surface of the sheet heater II -L
A new urethane foam 21 with a thickness of 50+nm was placed on the substrate to create an abnormally heated state.
上記各測温点の温度変化を通電開始時点から測定した結
果を第５図に示した。FIG. 5 shows the results of measurement of temperature changes at each of the temperature measurement points from the time when the current was started.
第５図のグラフより、面状ヒータ１１が２つのウレタン
フオーム２０．２１で両面かみ断熱された状態において
も約り０℃昇ｆ品しただけで、昇温が止まり平衡状態と
なっている。また、面状６ ｇ体１および温度センサ４
のそれぞれ温度に大きな斧かなく、面状発想体ｌの温度
を温度センサ、１かほぼｉＥ確に検知していることかわ
かる。From the graph of FIG. 5, even when the sheet heater 11 is insulated on both sides by two urethane foams 20 and 21, the temperature rises by only about 0° C., and then the temperature stops rising and an equilibrium state is reached. In addition, the planar body 6, the body 1, and the temperature sensor 4
It can be seen that the temperature of the planar idea body l is accurately detected by the temperature sensor, 1 or almost iE, without any big ax to the temperature.
以」二説明したように、この発明の面状ヒータは、−χ
・ｊの電極を￥ｆする面状発熱体と、この面状発熱体上
に配置された正温度係数特性を有する材１［からなる温
度センサと、前記面状発熱体の少なくと０片面を彼蕩す
る均りも部ｔイを何し、前記面状発、物体どｌｊ！度セ
ンサとを直列に接続したものであるので、正温度係数特
性を有する材料からなる温１度セン→Ｊのみて５′コ常
時の温度制御を確実に行うことができ、全体の構造か簡
単となり、安価に製造することかできる。As explained below, the planar heater of the present invention has −χ
・A planar heating element that connects electrode j to f, a temperature sensor made of a material 1 having a positive temperature coefficient characteristic disposed on the planar heating element, and at least one side of the planar heating element What should he do with the surface of the plane and the object? Since the temperature sensor is connected in series with a temperature sensor made of a material with positive temperature coefficient characteristics, constant temperature control can be performed reliably at all times, and the overall structure is simple. Therefore, it can be manufactured at low cost.
第１図ないし第３図は、この発明の面状ヒータの例を示
すしので、第１図は直路断面図、第２図は金属電極と温
度センサとの結線およびこれらの配置Ｂｇを示す説明図
、第３図は温度センサを示す概略断面図、第４図は実験
例における実験方法を示す説明図、第５図は実験例にお
いての温度変化を示すグラフである。
・面状発熱体、
金属電極、
温度
センサ、
・・均北部材。
出朝人
藤倉電線株式会社
松下電工株式会社
第２図
第３図1 to 3 show examples of the planar heater of the present invention. FIG. 1 is a straight sectional view, and FIG. 2 is an explanation showing the connection between the metal electrode and the temperature sensor and their arrangement Bg. 3 is a schematic sectional view showing a temperature sensor, FIG. 4 is an explanatory diagram showing an experimental method in an experimental example, and FIG. 5 is a graph showing temperature changes in an experimental example.・Sheet heating element, metal electrode, temperature sensor, ... uniform northern part material. Dechojin Fujikura Electric Wire Co., Ltd. Matsushita Electric Works Co., Ltd. Figure 2 Figure 3
Claims (1)
材料からなる温度センサと、 前記面状発熱体の少なくとも片面を被覆する均熱部材を
有し、 前記面状発熱体と温度センサとを直列に接続したことを
特徴とする面状ヒータ。[Scope of Claims] A planar heating element having a pair of electrodes, a temperature sensor made of a material having a positive temperature coefficient and disposed on the planar heating element, and covering at least one side of the planar heating element. What is claimed is: 1. A planar heater comprising: a heat equalizing member, wherein the planar heating element and a temperature sensor are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26446589A JPH03127480A (en) | 1989-10-11 | 1989-10-11 | Flat type heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26446589A JPH03127480A (en) | 1989-10-11 | 1989-10-11 | Flat type heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03127480A true JPH03127480A (en) | 1991-05-30 |
Family
ID=17403595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26446589A Pending JPH03127480A (en) | 1989-10-11 | 1989-10-11 | Flat type heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03127480A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100603527B1 (en) * | 2004-10-26 | 2006-07-24 | 엘지전자 주식회사 | Temperature sensing apparatus for microwave oven |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63232286A (en) * | 1987-03-20 | 1988-09-28 | 株式会社東芝 | Panel heater |
-
1989
- 1989-10-11 JP JP26446589A patent/JPH03127480A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63232286A (en) * | 1987-03-20 | 1988-09-28 | 株式会社東芝 | Panel heater |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100603527B1 (en) * | 2004-10-26 | 2006-07-24 | 엘지전자 주식회사 | Temperature sensing apparatus for microwave oven |
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