JP3075042B2 - Heating element structure - Google Patents
Heating element structureInfo
- Publication number
- JP3075042B2 JP3075042B2 JP05254679A JP25467993A JP3075042B2 JP 3075042 B2 JP3075042 B2 JP 3075042B2 JP 05254679 A JP05254679 A JP 05254679A JP 25467993 A JP25467993 A JP 25467993A JP 3075042 B2 JP3075042 B2 JP 3075042B2
- Authority
- JP
- Japan
- Prior art keywords
- ptc heater
- heating element
- heater element
- ceramic
- heating
- 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
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＰＴＣヒ−タ素子を使
用した発熱体の構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a heating element using a PTC heater element.
【０００２】[0002]
【従来の技術と問題点】ＰＴＣヒ−タ素子は赤熱しない
という特長から可燃性の液体や気体の加熱や蒸発用の発
熱体として使用される。この場合可燃性物質中のタ−ル
成分やイオウ化合物によりＰＴＣヒ−タ素子の還元劣化
や電極腐食が問題となる。またＰＴＣヒ−タ素子を用い
て液体および気体を加熱する場合放熱面積をより大きく
し高出力を得ることが望ましいとの考えから本出願人は
ＰＴＣヒ−タ素子とセラミック放熱板とを電極層を介し
て接合一体化し、放熱効率を向上させるようにした発熱
体構造を特許出願をしている。2. Description of the Related Art A PTC heater element is used as a heating element for heating or evaporating a flammable liquid or gas because of its characteristic that it does not emit red heat. In this case, a tar component or a sulfur compound in the combustible material causes a problem of reduction deterioration of the PTC heater element and electrode corrosion. Also, when heating liquids and gases using a PTC heater element, it is desirable to increase the heat radiation area and obtain a high output, and the present applicant considers that the PTC heater element and the ceramic heat radiating plate are connected to an electrode layer. A patent application has been filed for a heating element structure that is joined and integrated via a through hole to improve heat dissipation efficiency.
【０００３】しかしこの発熱体は、防水、防火、（防
爆）雰囲気内で使用するには絶縁性、気密性に問題があ
る。つまり使用環境によってはＰＴＣ発熱体の絶縁性、
気密性が必要不可欠なものとなる。本発明は上記の問題
に鑑み可燃性の液体や気体の加熱あるいは蒸発用ヒ−タ
−として高出力で安全性の高い発熱体を提供することを
目的とする。However, this heating element has problems in insulation and airtightness when used in a waterproof, fireproof, (explosion-proof) atmosphere. In other words, depending on the usage environment, the insulation properties of the PTC heating element,
Hermeticity is essential. The present invention has been made in view of the above problems, and has as its object to provide a high-output and highly-safe heating element as a heater for heating or evaporating a flammable liquid or gas.
【０００４】[0004]
【問題解決のための手段】上記の目的を達成するために
本発明における発熱体構造は、絶縁性を有する２枚のセ
ラミックに凹部を設け、該凹部及びリ−ド端子接続位置
に電極ペ−ストをスタンプ印刷すると共に一方の凹部に
ＰＴＣヒ−タ素子を挿入した後２枚のセラミック放熱板
を接着剤を介して接合すると共に焼付処理し、もってＰ
ＴＣヒ−タ素子と２枚のセラミック放熱板とを電極層を
介して接合一体化すると共にＰＴＣヒ−タ素子を２枚の
セラミック放熱板で密封包囲したことを特徴とするもの
である。In order to achieve the above object, a heating element structure according to the present invention is provided with a concave portion in two insulating ceramics, and an electrode pad is provided at a position where the concave portion and a lead terminal are connected. The stamp is printed with a stamp, and a PTC heater element is inserted into one of the recesses. Then, the two ceramic heat radiating plates are joined via an adhesive and printed.
The TC heater element and two ceramic heat radiating plates are joined and integrated via an electrode layer, and the PTC heater element is hermetically surrounded by two ceramic heat radiating plates.
【０００５】ＰＴＣヒ−タ素子は、自己温度制御機能を
持ち、制御系の不要なヒ−タである。発熱温度は発熱体
のキュ−リ点がことなるものを組合せることにより１つ
の発熱体ユニットで種々の温度を得ることができる。セ
ラミック放熱板はＡｌ2Ｏ3，Ｓｉ3Ｎ4，ＡｌＮの絶縁性
があり、かつ熱伝導率の高いものを使用する。電極ペ−
ストは放熱板およびＰＴＣヒ−タ素子との接合強度の高
いものを用いる。例えばＡｕ，Ａｇ，Ａｇ−Ｐｄ，Ｃ
ｕ，等の導電材料に低融点のガラスが含まれるものが望
ましく、これらを放熱板にスタンプ印刷し、その上にＰ
ＴＣヒ−タ素子を置き、乾燥後、焼付け処理を行なうこ
とにより放熱体とＰＴＣヒ−タ素子が強固に接合され
る。The PTC heater element has a self-temperature control function and does not require a control system. Various heating temperatures can be obtained with a single heating element unit by combining different heating elements with different Curie points. As the ceramic radiator plate, use is made of Al 2 O 3 , Si 3 N 4 , or AlN which has insulating properties and high thermal conductivity. Electrode pair
A strike having a high bonding strength with the heat sink and the PTC heater element is used. For example, Au, Ag, Ag-Pd, C
It is desirable that conductive materials such as u, etc. contain low melting point glass, and these are stamp-printed on a heat sink, and P
After the TC heater element is placed, dried, and baked, the radiator and the PTC heater element are firmly joined.
【０００６】[0006]
【作用】本発明は上記のような解決手段を採用すること
により、ＰＴＣヒ−タ素子は２枚のセラミック放熱板に
より包囲され、その全面を放熱面として使用できるため
熱効率の高い発熱体にされている。また、ＰＴＣヒ−タ
素子は２枚のセラミック放熱板に密封包囲されているた
め絶縁性、耐熱性、耐薬品性、耐摩耗性等に優れ、過酷
な使用環境に耐え得る。According to the present invention, by adopting the above solution, the PTC heater element is surrounded by two ceramic heat radiating plates, and the entire surface thereof can be used as a heat radiating surface. ing. Further, since the PTC heater element is hermetically surrounded by two ceramic heat radiating plates, it has excellent insulation, heat resistance, chemical resistance, abrasion resistance, etc., and can withstand a severe use environment.
【０００７】[0007]
【実施例】以下図面に基づいて本発明の実施例を詳しく
説明する。図１は発熱体の組立状況を示す分解斜視図で
あって、アルミナ製の５０mm×２０mm×４mmの２枚のセ
ラミック放熱板１．１Ａには、一端から中央部に延びる
リ−ド端子接続用の溝２．２Ａが設けられており、該セ
ラミック放熱板１．１Ａの中央部にはＰＴＣヒ−タ素子
Ｈを挿入するための凹部３．３Ａが前記溝２．２Ａに続
けて掘られている。この状態でセラミック放熱板１．１
Ａの凹部３．３Ａ及び溝２．２ＡにＡｇペ−スト４をス
タンプ印刷すると共にセラミック放熱板１の周縁に無機
接着剤５をスクリ−ン印刷する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an exploded perspective view showing an assembling state of a heating element. Two ceramic heat radiating plates 1.1A of 50 mm × 20 mm × 4 mm made of alumina are connected to a lead terminal extending from one end to the center. A groove 3.3A for inserting a PTC heater element H is dug in the center of the ceramic heat sink 1.1A. I have. In this state, the ceramic heat sink 1.1
The Ag paste 4 is stamp-printed on the recesses 3.3A and the grooves 2.2A of A, and the inorganic adhesive 5 is screen-printed on the periphery of the ceramic radiator plate 1.
【０００８】次にＡｇペ−スト４および無機接着剤５が
乾燥あるいは固化する前にＰＴＣヒ−タ素子Ｈ（１０mm
¢×３mm−キュリ温度１５０℃）を凹部３に挿入し、他
方のセラミック放熱板１Ａをセラミック放熱板１の上に
合わせて図２の状態にする。これを１００℃−１５min
乾燥後、６００℃−５min焼付けしてＡｇペ−ストを固
める処理を行なう。これによりＰＴＣヒ−タ素子Ｈと２
枚のセラミック放熱板１．１Ａは電極層（Ａｇペ−スト
４）を介して接合一体化すると共にＰＴＣヒ−タ素子を
２枚のセラミック放熱板１．１Ａで密封包囲した状態に
構成される。このようにして得られた発熱体Ｗを図３の
ようにＡＣ１００Ｖ印加し、容器内で５００cm3の水を
加熱し、水温を測定した結果を図７に示す。Next, before the Ag paste 4 and the inorganic adhesive 5 are dried or solidified, the PTC heater element H (10 mm
¢ × 3 mm—Curie temperature 150 ° C.) is inserted into the recess 3, and the other ceramic radiator plate 1 </ b> A is placed on the ceramic radiator plate 1, as shown in FIG. 2. 100 ℃ -15min
After drying, baking is performed at 600 ° C. for 5 minutes to harden the Ag paste. Thereby, PTC heater elements H and 2
The two ceramic heat radiating plates 1.1A are joined and integrated via an electrode layer (Ag paste 4), and the PTC heater element is configured to be hermetically surrounded by two ceramic heat radiating plates 1.1A. . As shown in FIG. 3, the heating element W thus obtained was applied with 100 V AC, and 500 cm 3 of water was heated in the container, and the temperature of the water was measured. The result is shown in FIG.
【０００９】[0009]
【比較例】図４は比較例としての発熱体の組立状況を示
す分解図であって、アルミナ製の５０mm×２０mm×４mm
のセラミック放熱板１には一端から中央部に延びるリ−
ド端子接続用の溝２が設けられており、該溝２に続けて
凹部３が掘られている。この状態で凹部３及び溝２にＡ
ｇペ−スト４をスタンプ印刷した後、ＰＴＣヒ−タ素子
Ｈ（１０mm¢×３mm−キュ−リ温度１５０℃）を凹部３
に挿入して図５の状態にした後、これを１００℃−１５
min乾燥後６００℃−５min焼付けしてＡｇペ−ストを固
める処理を行なう。このようにして得られた発熱体Ｓを
図６のようにＡＣ１００Ｖ印加し、容器内で５００cm3
の加熱し、水温を測定した結果を図７に示す。Comparative Example FIG. 4 is an exploded view showing a state of assembly of a heating element as a comparative example, and is made of alumina 50 mm × 20 mm × 4 mm.
The ceramic radiating plate 1 has a lead extending from one end to the center.
A groove 2 for connecting the terminal is provided, and a recess 3 is dug following the groove 2. In this state, A
After the g paste 4 is stamp-printed, the PTC heater element H (10 mm ¢ × 3 mm-curie temperature 150 ° C.) is recessed into the recess 3.
To the state shown in FIG.
After min drying, baking at 600 ° C for 5 minutes is performed to harden the Ag paste. Such a heating element S thus obtained is AC100V applied as in FIG. 6, 500 cm 3 in a container
FIG. 7 shows the result of measuring the water temperature after heating.
【００１０】発明の実施例として示した発熱体Ｗと比較
例に示した発熱体Ｓによる水の加熱状態を図７により見
ると実施例の発熱体Ｗは全面を放射面として使用してい
るため放熱効果が良く短時間のうちに１００℃の温度に
加熱できることがわかる。また実施例に示した発熱体Ｗ
のＰＴＣヒ−タ素子はセラミック放射板にて密封包囲さ
れているため防水、防火（防爆）雰囲気内での使用が可
能であることが確認できた。尚上記実施例においてはリ
−ド端子接続のために溝２．２Ａを設けてここにＡｇペ
−スト４を印刷しているが溝２．２Ａを設けずにＡｇペ
−スト４を印刷してもよい。FIG. 7 shows the heating state of water by the heating element W shown as the embodiment of the invention and the heating element S shown in the comparative example, and the heating element W of the embodiment uses the entire surface as a radiation surface. It can be seen that the heat radiation effect is good, and the temperature can be increased to 100 ° C. in a short time. The heating element W shown in the embodiment
Since the PTC heater element was sealed and surrounded by a ceramic radiating plate, it was confirmed that it could be used in a waterproof and fire-proof (explosion-proof) atmosphere. In the above-described embodiment, the groove 2.2A is provided for connecting the lead terminals and the Ag paste 4 is printed thereon. However, the Ag paste 4 is printed without providing the groove 2.2A. You may.
【００１１】[0011]
【発明の効果】本発明は上記の説明から明らかなように
発熱体の全面を放熱面として使用できるため放熱効率が
よいと共にＰＴＣヒ−タ素子はセラミック放熱板により
密封包囲されているため絶縁性、耐熱性、耐摩性等に優
れ、過酷な使用に耐えるものであり、例えばエンジンの
混合気ヒ−タのようにガソリンや軽油の雰囲気内での素
子の還元劣化や電極腐食が問題となる状況下においての
使用が可能である。As is clear from the above description, the present invention can use the entire surface of the heating element as a heat radiating surface, so that the heat radiating efficiency is good, and the PTC heater element is sealed and surrounded by the ceramic heat radiating plate. It is excellent in heat resistance, abrasion resistance, etc., and can withstand severe use. For example, such as an air-fuel mixture of an engine, there is a problem such as reduction deterioration of the element and electrode corrosion in an atmosphere of gasoline or light oil. It can be used below.
【図１】本発明の発熱体の組立状況を示す分解斜視図で
ある。FIG. 1 is an exploded perspective view showing an assembly state of a heating element of the present invention.
【図２】本発明の発熱体の組立正面図である。FIG. 2 is an assembled front view of the heating element of the present invention.
【図３】本発明の発熱体による水の加熱状態を示す断面
図である。FIG. 3 is a cross-sectional view showing a heating state of water by a heating element of the present invention.
【図４】比較例の発熱体の組立状況を示す分解斜視図で
ある。FIG. 4 is an exploded perspective view showing an assembly state of a heating element of a comparative example.
【図５】比較例の発熱体の組立正面図である。FIG. 5 is an assembled front view of a heating element of a comparative example.
【図６】比較例の発熱体による水の加熱状態を示す断面
図である。FIG. 6 is a cross-sectional view showing a heating state of water by a heating element of a comparative example.
【図７】実施例と比較例との水の加熱経過時間と水温と
の関係を示すグラフである。FIG. 7 is a graph showing the relationship between elapsed water heating time and water temperature in Examples and Comparative Examples.
【符号の説明】 １ １Ａ セラミック放熱板 ２ ２Ａ 溝 ３ ３Ａ 凹部 ４ Ａｇペ−スト ５ 接着剤 Ｈ ＰＴＣヒ−タ素子[Description of Signs] 1 1A Ceramic radiator plate 2 2A Groove 3 3A Concave portion 4 Ag paste 5 Adhesive H PTC heater element
フロントページの続き (56)参考文献 特開 昭63−150877（ＪＰ，Ａ) 特開 昭64−54688（ＪＰ，Ａ) 実開 昭63−145293（ＪＰ，Ｕ) 実開 昭52−18443（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H05B 3/14 H05B 3/18 H05B 3/78 H05B 3/20 Continuation of the front page (56) References JP-A-63-150877 (JP, A) JP-A-64-54688 (JP, A) JP-A-63-145293 (JP, U) JP-A-52-18443 (JP) , U) (58) Fields investigated (Int. Cl. 7 , DB name) H05B 3/14 H05B 3/18 H05B 3/78 H05B 3/20
Claims (1)
１．１Ａに凹部３．３Ａを設け、該凹部３．３Ａ及びリ
−ド端子接続位置に電極ペ−スト４をスタンプ印刷する
と共に一方の凹部３にＰＴＣヒ−タ素子Ｈを挿入した後
２枚のセラミック放熱板１．１Ａを接着剤５を介して接
合すると共に焼付処理し、もって該ＰＴＣヒ−タ素子Ｈ
と２枚のセラミック放熱板１．１Ａとを電極層を介して
接合一体化すると共にＰＴＣヒ−タ素子Ｈを２枚のセラ
ミック放熱板１．１Ａで密封包囲したことを特徴とする
発熱体構造1. A concave portion 3.3A is provided in two insulating ceramic heat radiating plates 1.1A, and an electrode paste 4 is stamp-printed on the concave portion 3.3A and a lead terminal connecting position. After the PTC heater element H is inserted into the concave portion 3, the two ceramic radiating plates 1.1A are joined together through the adhesive 5 and are baked to thereby form the PTC heater element H.
And a heat radiating plate 1.1A and a ceramic radiating plate 1.1A are joined and integrated via an electrode layer, and the PTC heater element H is hermetically surrounded by the two ceramic radiating plates 1.1A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05254679A JP3075042B2 (en) | 1993-09-17 | 1993-09-17 | Heating element structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05254679A JP3075042B2 (en) | 1993-09-17 | 1993-09-17 | Heating element structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0785951A JPH0785951A (en) | 1995-03-31 |
| JP3075042B2 true JP3075042B2 (en) | 2000-08-07 |
Family
ID=17268362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05254679A Expired - Fee Related JP3075042B2 (en) | 1993-09-17 | 1993-09-17 | Heating element structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3075042B2 (en) |
-
1993
- 1993-09-17 JP JP05254679A patent/JP3075042B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0785951A (en) | 1995-03-31 |
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