JPH01154486A - Plane-shaped heater - Google Patents
Plane-shaped heaterInfo
- Publication number
- JPH01154486A JPH01154486A JP31375687A JP31375687A JPH01154486A JP H01154486 A JPH01154486 A JP H01154486A JP 31375687 A JP31375687 A JP 31375687A JP 31375687 A JP31375687 A JP 31375687A JP H01154486 A JPH01154486 A JP H01154486A
- Authority
- JP
- Japan
- Prior art keywords
- heat storage
- nonwoven fabric
- storage medium
- mixture
- electrodes
- 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
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 31
- 238000005338 heat storage Methods 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000005452 bending Methods 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 abstract 2
- 239000004744 fabric Substances 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 239000004020 conductor Substances 0.000 description 5
- 239000000155 melt Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- 150000002894 organic compounds Chemical class 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- -1 paraffins Chemical class 0.000 description 2
- 229920001515 polyalkylene glycol Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002739 metals Chemical group 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［技術分野］
本発明は、蓄熱媒体を用いた面状発熱体に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a planar heating element using a heat storage medium.
［背景技術］
パラフィン類、ポリアルキレングリコール類、高級アル
キルエーテル類、高級アルキルエステル類、高級脂肪酸
、高級アルコール等の有機化合物は外部からの加熱によ
り融点以上になると融解し、＠解の際の潜熱を苔えるた
めに蓄熱物質として知られている。この蓄熱物質を利用
して電熱ヒータによる発熱を蓄える方式の暖房装置など
は従来から広く知られているが、蓄熱媒体に炭素粉末な
どの導電性物質を混合して得られる導電性蓄熱媒体が特
開昭５９−６６０９３号公報や特開昭５９−１１０１０
１号公報で提供されるに至っている。[Background technology] Organic compounds such as paraffins, polyalkylene glycols, higher alkyl ethers, higher alkyl esters, higher fatty acids, higher alcohols, etc. melt when the temperature reaches above their melting point due to external heating, and the latent heat during melting occurs. It is known as a heat storage material for moss. Heating devices that use this heat storage material to store heat generated by an electric heater have been widely known, but conductive heat storage media obtained by mixing a conductive material such as carbon powder with the heat storage medium are particularly special. Publication No. 59-66093 and JP-A No. 59-11010
It has now been provided in Publication No. 1.
この蓄熱媒体と導電性物質との混合物は交流または直流
を通電することによって発熱し、また導電性物質の混合
量を１１９することで所定の発熱温度にまで上昇したの
ちはその発熱温度に安定するという挙動を示す。従って
この蓄熱媒体と導電性物質との混合物は、サーモスタッ
トやサーモプロテクタなどを必要とせず安全性の高い発
熱体として使用することができる。This mixture of heat storage medium and conductive substance generates heat by passing alternating current or direct current, and by increasing the amount of conductive substance mixed to 119, the mixture reaches a predetermined exothermic temperature and then stabilizes at that exothermic temperature. This behavior is shown. Therefore, this mixture of heat storage medium and conductive substance can be used as a highly safe heating element without requiring a thermostat or thermoprotector.
そしてこの蓄熱媒体と導電性物質との混合物を用いて形
成した面状発熱体が特開昭５９−２１９８８６号公報に
おいて提供されている。この特開昭５９−２１９８８６
号公報で提供された面状発熱体は、温度変化により溶融
状態と固体状態とをとり得る有機化合物からなる蓄熱媒
体と炭素粉末からなる導電性物質との混合物を表裏２枚
の非導電性被覆シートで密封すると共に混合物の導電性
慴熱媒体内に所定間隔をおいて電極を埋設して形成する
ようにしたものであり、非導電性被覆シートとして熱可
塑性樹脂シート（フィルム）を用い、これを融着（ヒー
トシール）することによって蓄熱媒体と導電性物質との
混合物を密封するようにしている。A planar heating element formed using a mixture of this heat storage medium and a conductive substance is provided in Japanese Patent Application Laid-Open No. 59-219886. This Japanese Patent Publication No. 59-219886
The planar heating element provided in the publication is a mixture of a heat storage medium made of an organic compound that can change between a molten state and a solid state depending on temperature changes, and a conductive substance made of carbon powder, with two non-conductive coatings on the front and back. It is sealed with a sheet and is formed by embedding electrodes at predetermined intervals in the conductive heating medium of the mixture.A thermoplastic resin sheet (film) is used as the non-conductive covering sheet. The mixture of heat storage medium and conductive material is sealed by heat sealing.
しかしこのものにあって、熱可塑性樹脂シートで形成さ
れる非導電性被覆シートを融着する際の加熱で蓄熱媒体
が溶融して流動性を生じると、電極が蓄熱媒体の流動に
伴って位置ずれし易いという問題が有った。この電極の
位置ずれの問題は面状発熱体を使用する際の蓄熱媒体の
溶融時においても同様に生じるものである。またこの面
状発熱体においてその剛性は主と１．て非導電性被覆シ
ートによって得られているものであるが、非導電性被覆
シートを上記のように熱可塑性樹脂シートで形成する場
合には十分な曲げ強度を得ることができず、面状発熱体
に屈曲が生じ易くて取り扱い性に問題が生じるものであ
った。However, with this device, if the heat storage medium melts and becomes fluid due to heating when fusing the non-conductive covering sheet formed of a thermoplastic resin sheet, the electrodes will move in position as the heat storage medium flows. There was a problem that it was easy to shift. This problem of electrode displacement also occurs when a heat storage medium is melted when a planar heating element is used. In addition, the rigidity of this sheet heating element is mainly 1. However, when the non-conductive covering sheet is made of a thermoplastic resin sheet as described above, it is not possible to obtain sufficient bending strength, resulting in sheet heating. The body was prone to bending, which caused problems in handling.
［発明の目的］
本発明は、上記の点に鑑みて為されたものであり、電極
の位置ずれを防止することができると共に、曲げ強度を
高めることがでさる面状発熱体を提供することを目的と
するものである。[Object of the Invention] The present invention has been made in view of the above points, and it is an object of the present invention to provide a planar heating element that can prevent electrode displacement and increase bending strength. The purpose is to
［発明の開示１
しかして本発明に係る面状発熱体は、蓄熱媒体と導電性
物質との混合物を不織布１に含浸し、所定間隔をおいた
複数の電極２をこの不織布１の間に挟み込むと共にこれ
らを非導電性の被覆シート２の間に密封して成ることを
特徴とするものである。そして本発明にあっては、蓄熱
媒体と導電性物質との混合物を不織布１に含浸させた状
態で用いて電極２をこの不織布１の間に挟み込むように
して、電極２と不織布１との開の摩擦で電極２がずれ勤
（ことを防止するようにし、また不織布１による補強効
果で面状発熱体の曲げ強度を高めることができるように
しである。DISCLOSURE OF THE INVENTION 1 The planar heating element according to the present invention is produced by impregnating a nonwoven fabric 1 with a mixture of a heat storage medium and a conductive substance, and sandwiching a plurality of electrodes 2 at predetermined intervals between the nonwoven fabric 1. This is characterized in that these are sealed between a non-conductive covering sheet 2. In the present invention, the nonwoven fabric 1 is impregnated with a mixture of a heat storage medium and a conductive substance, and the electrode 2 is sandwiched between the nonwoven fabric 1 so that the electrode 2 and the nonwoven fabric 1 are separated. This is to prevent the electrodes 2 from shifting due to friction, and to increase the bending strength of the planar heating element due to the reinforcing effect of the nonwoven fabric 1.
以下本発明を実施例により詳述する。蓄熱媒体は温度変
化により溶融状態と固体状態とをとり得る有機化合物か
らなるものであり、この蓄熱媒体としては、特開昭５９
−２１９８８６号公報に開示されるようにパラフィン類
、ポリアルキレングリコール類、高級アルキルエーテル
類、高級アルキルエステル類、高級脂肪酸、高級アルコ
ールなど溶融温度が２０〜７０℃の範囲にある高級炭化
水素を用いることができ、なかでもポリエチレングリコ
ールを主成分とするものが特に良好である。The present invention will be explained in detail below with reference to Examples. The heat storage medium is made of an organic compound that can change between a molten state and a solid state depending on temperature changes.
As disclosed in Publication No. 219886, higher hydrocarbons having a melting temperature in the range of 20 to 70°C, such as paraffins, polyalkylene glycols, higher alkyl ethers, higher alkyl esters, higher fatty acids, and higher alcohols, are used. Among them, those containing polyethylene glycol as the main component are particularly good.
また導電性物質としては炭素粉末を用いることができ、
黒鉛粉末のような結晶性カーボン、活性炭のような無定
形カーボンを問わず使用することができる。Ｗ熱媒体と
導電性物質との混合比率は面状発熱体の発熱温度などと
の関連から重要な因子であり、特開昭５９−２１９８８
６号公報に開示されるように、例えば蓄熱媒体として溶
融温度が４９℃のポリエチレングリコールを、導電性物
質として黒鉛粉末をそれぞれ用いる場合、ポリエチレン
グリコール１２０重量部に対して黒鉛粉末を４０〜６０
部程度混合するのが良好である。Further, carbon powder can be used as the conductive material,
Either crystalline carbon such as graphite powder or amorphous carbon such as activated carbon can be used. The mixing ratio of the W heating medium and the conductive substance is an important factor in relation to the heat generation temperature of the planar heating element, and is disclosed in Japanese Patent Application Laid-Open No. 59-21988.
As disclosed in Publication No. 6, for example, when polyethylene glycol with a melting temperature of 49°C is used as the heat storage medium and graphite powder is used as the conductive material, 40 to 60 parts of graphite powder is added to 120 parts by weight of polyethylene glycol.
It is best to mix at least 1 part.
この蓄熱媒体と導電性物質とを混合した混合物は不織布
１に含浸させた状態で用いられる。不織布１への含浸は
混合物を加熱融解した状態でおこなうことができる。ま
た電Ｆｊ、２としては、ｔ１４Ｍや銅シートなど金属薄
板を用いることができる。そして一対（複数対でもよい
）の電極２，２を平行に離した状態で上記混合物を含浸
した上下２枚の不織布１，１の間に挟み込み、さらにこ
の不織布１゜１の全体を非導電性の被覆シート３で被覆
して密封することによって、第１図及Ｖ第２図に示すよ
うな面状発熱体Ａを得ることができる。電極２も不織布
１，１とともに被覆シート３によりで被覆されることに
なるが、被覆シート３を貫通して端子金共４などを電極
２に取り付けて電線を接続することによって、電極２に
交流や直流を通電することができる。The mixture of the heat storage medium and the conductive material is used in a state in which the nonwoven fabric 1 is impregnated with the mixture. The nonwoven fabric 1 can be impregnated with the mixture heated and melted. Further, as the electric wire Fj,2, a metal thin plate such as t14M or a copper sheet can be used. Then, a pair (or more than one pair) of electrodes 2, 2 are sandwiched between two upper and lower nonwoven fabrics 1, 1 impregnated with the above mixture in a parallel and separated state, and the entire nonwoven fabric 1°1 is made non-conductive. By covering and sealing with the covering sheet 3, a planar heating element A as shown in FIGS. 1 and 2 can be obtained. The electrode 2 is also covered with the covering sheet 3 along with the nonwoven fabrics 1 and 1, but by passing through the covering sheet 3 and attaching terminal metals 4 to the electrode 2 and connecting electric wires, it is possible to connect the electrode 2 with an alternating current. or direct current can be applied.
ここで、被覆シート３としてはポリエチレンテレフタレ
ートなど熱可塑性樹脂のシートを用いるものであり、こ
の被覆シート３，３を不織布１，１の上下から重ねて被
覆シート３，３の端部同士をヒートシールすることによ
って、被覆シート３゜３″ｃ不織布１，１を密封するよ
うにしである。このようにヒートシールするにあたって
、被覆シートの端部同士を融着させるために加熱する必
要があり、この加熱で不織布１に含浸した混合物の蓄熱
媒体が溶融することになるが、蓄熱媒体は不地布１に含
浸された状態にあって自由に流動することができず、し
かも電極２は不織布１，１間に挟まれた状態にあって電
極２と不織布１との間に摩擦力が働き、ヒートシールの
際の蓄熱媒体の溶融に伴って電極２がずれ動くようなお
それはないものである。電極２に通電して面状発熱体Ａ
を使用するときに発熱で蓄熱媒体が溶融した際にも、同
様に電極２がずれ動くようなおそれはない。また、この
ように不織布１が被覆シート３の他に面状発熱体Ａを構
成する要素となるために、不織布１によって面状発熱体
Ａの曲げ強度が高められることになり、面状発熱体Ａを
取り扱う際に面状発熱体Ａが容易に屈曲してしまうこと
を防止することができるものである。Here, a sheet of thermoplastic resin such as polyethylene terephthalate is used as the covering sheet 3, and the covering sheets 3, 3 are overlapped from above and below the nonwoven fabrics 1, 1, and the ends of the covering sheets 3, 3 are heat-sealed. By doing so, the covering sheets 3°3"c and the nonwoven fabrics 1, 1 are sealed. When heat-sealing in this way, it is necessary to heat the ends of the covering sheets to fuse them together, and this The heat storage medium of the mixture impregnated into the nonwoven fabric 1 will be melted by heating, but the heat storage medium is impregnated with the nonwoven fabric 1 and cannot flow freely, and the electrode 2 is not connected to the nonwoven fabric 1. 1, a frictional force acts between the electrode 2 and the nonwoven fabric 1, and there is no fear that the electrode 2 will shift as the heat storage medium melts during heat sealing. 2 is energized to generate a sheet heating element A.
Even when the heat storage medium melts due to heat generation when using the electrode 2, there is no fear that the electrode 2 will shift or move. In addition, since the nonwoven fabric 1 serves as an element constituting the planar heating element A in addition to the covering sheet 3, the bending strength of the planar heating element A is increased by the nonwoven fabric 1. This can prevent the planar heating element A from being easily bent when it is handled.
［発明の効果１
上述のように本発明にあっては、蓄熱媒体と導電性物質
との混合物を不織布に含浸し、所定間隔をおいた複数の
′Ｋ１ｆｆ１をこの不織布の間に挟み込むと共にこれら
を非導電性の被覆シートの間に密封するようにしたので
、電極は不織布と接触し合った状態にあって、蓄熱媒体
が溶融しても電極は不織布との間の摩擦力でずれ動くよ
うなおそれはないものであり、しかも不織布によって面
状発熱体の曲げ強度を高めることができ、面状発熱体は
容易に屈曲してしまうことがなく取り扱い性を高めるこ
とができるものである。[Effect of the invention 1 As described above, in the present invention, a nonwoven fabric is impregnated with a mixture of a heat storage medium and a conductive substance, and a plurality of 'K1ff1's are sandwiched between the nonwoven fabrics at predetermined intervals. Since the electrodes are sealed between non-conductive covering sheets, the electrodes are in contact with the non-woven fabric, and even if the heat storage medium melts, the electrodes will not shift due to the frictional force between them and the non-woven fabric. Moreover, the bending strength of the planar heating element can be increased by using the nonwoven fabric, and the planar heating element is not easily bent, making it possible to improve handling properties.
第１図は本発明の一実施例の断面図、第２図は同上の一
部破断した平面図である。
１は不織布、２は電極、３は被覆シートである。FIG. 1 is a sectional view of one embodiment of the present invention, and FIG. 2 is a partially cutaway plan view of the same. 1 is a nonwoven fabric, 2 is an electrode, and 3 is a covering sheet.
Claims (1)
し、所定間隔をおいた複数の電極をこの不織布の間に挟
み込むと共にこれらを非導電性の被覆シートの間に密封
して成ることを特徴とする面状発熱体。(1) A nonwoven fabric is impregnated with a mixture of a heat storage medium and a conductive substance, and a plurality of electrodes are sandwiched between the nonwoven fabrics at predetermined intervals, and these are sealed between nonconductive cover sheets. A sheet heating element characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31375687A JPH01154486A (en) | 1987-12-10 | 1987-12-10 | Plane-shaped heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31375687A JPH01154486A (en) | 1987-12-10 | 1987-12-10 | Plane-shaped heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01154486A true JPH01154486A (en) | 1989-06-16 |
Family
ID=18045157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31375687A Pending JPH01154486A (en) | 1987-12-10 | 1987-12-10 | Plane-shaped heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01154486A (en) |
-
1987
- 1987-12-10 JP JP31375687A patent/JPH01154486A/en active Pending
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