JPH03230489A - Ceramic heater - Google Patents
Ceramic heaterInfo
- Publication number
- JPH03230489A JPH03230489A JP2469690A JP2469690A JPH03230489A JP H03230489 A JPH03230489 A JP H03230489A JP 2469690 A JP2469690 A JP 2469690A JP 2469690 A JP2469690 A JP 2469690A JP H03230489 A JPH03230489 A JP H03230489A
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- heating element
- lead wire
- section
- ceramic body
- 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
- 239000000919 ceramic Substances 0.000 title claims abstract description 35
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000008646 thermal stress Effects 0.000 abstract description 11
- 238000005219 brazing Methods 0.000 abstract description 9
- 230000005284 excitation Effects 0.000 abstract 2
- 239000006200 vaporizer Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 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
- 238000010304 firing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002343 gold Chemical class 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明はセラミックヒータに関する。係るセラミックヒ
ータは、例えば給湯器等に用いられる石油気化燃焼器の
気化器の加熱体として利用することができる。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a ceramic heater. Such a ceramic heater can be used, for example, as a heating element for a vaporizer of an oil vaporization combustor used in a water heater or the like.
〈従来の技術〉
石油気化燃焼器の気化器の加熱体として用いられている
セラミックヒータは、従来、第５図に示す如き構造とさ
れている。すなわち、第５図は断面図で、気化器ｌの表
面にセラミックヒータ１０のセラミック体１１が取り付
けられ、該セラミック体１１内にサンドイッチされた形
で発熱体く例えばＷＭｏ系）１２が印刷、焼成されてい
る。そしてこの発熱体１２に対してセラミック体１１の
１カ所が開口され、リード線にニッケル線）１３が銀ロ
ウ付け１４されている。そしてガラスコート１５によっ
て強度アップと酸化防止がなされている。<Prior Art> Conventionally, a ceramic heater used as a heating element for a vaporizer of an oil vaporization combustor has a structure as shown in FIG. That is, FIG. 5 is a cross-sectional view, in which a ceramic body 11 of a ceramic heater 10 is attached to the surface of a vaporizer l, and a heating element (for example, WMo type) 12 is printed and fired while being sandwiched within the ceramic body 11. has been done. One location of the ceramic body 11 is opened to the heating element 12, and a nickel wire (nickel wire) 13 is soldered with silver 14 to the lead wire. The glass coat 15 increases strength and prevents oxidation.
〈発明が解決しようとする課題〉
ところが上記従来のセラミックヒータでは、ロウ付け１
４部が熱応力の繰り返しによって破損しやすい欠点があ
った。すなわち、ニッケル線のリード線と銀ロウとは馴
染みが悪く、熱応力によって外れやすい。またロウを恨
−銅ロウに換えれば、馴染みは良くなるが、硬いために
、これもまた熱応力によって破損しやすい。<Problem to be solved by the invention> However, in the above conventional ceramic heater, the brazing 1
The disadvantage was that the fourth part was easily damaged by repeated thermal stress. That is, the nickel wire lead wire and the silver solder do not fit well, and are likely to come off due to thermal stress. Also, if the wax is replaced with copper wax, it will fit better, but since it is hard, it is also prone to breakage due to thermal stress.
特に上記セラミックヒータを石油気化燃焼器に用いる場
合には、気化器等に付着したタール分を除去するため、
高温で空焼きをすることから、上記セラミックヒータで
はロウ付は部の断線、破損が−層生じやすい欠点があっ
た。In particular, when using the above ceramic heater in an oil vaporization combustor, in order to remove tar attached to the vaporizer, etc.
Since the ceramic heater is baked at a high temperature, there is a drawback that the brazing part is easily disconnected or damaged.
そこで本発明は上記従来技術の欠点を解消し、高温下で
の使用や大きな熱応力下での使用によっても断線や破損
等が生じないセラミックヒータの提供を目的とする。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the drawbacks of the prior art described above and to provide a ceramic heater that does not cause disconnection or damage even when used at high temperatures or under large thermal stress.
〈課題を解決するための手段〉
上記目的−を達成するため、本発明のセラミックヒータ
は、セラミック体内に発熱体が埋設されたセラミックヒ
ータであって、前記発熱体の端子部を前記セラミック体
表面に露出させると共に、該露出した端子部に対してリ
ード線の端子をバネ付勢状態で押し当てて電気接続する
ように構成したことを特徴としている。<Means for Solving the Problems> In order to achieve the above object, the ceramic heater of the present invention is a ceramic heater in which a heating element is embedded in a ceramic body, and the terminal portion of the heating element is connected to the surface of the ceramic body. The terminal of the lead wire is exposed to the exposed terminal portion, and the terminal of the lead wire is pressed against the exposed terminal portion in a spring-biased state for electrical connection.
〈作用〉
ロウ付けの代わりに、発熱体の端子部とリード線の端子
とがバネ付勢状態で互いに押し当てられているので、ロ
ウ付は部が高温や熱応力によって破損するといったこと
が生じ得ない。しかもバネ付勢状態で相互に押し当てら
れているので、熱応力やその他の応力に対しても確実に
電気接続状態を保持することができる。またロウ付けの
場合とは異なり、接続部の取り付は取り外し、補修等を
容易に行うことができる。<Function> Instead of brazing, the terminals of the heating element and the terminals of the lead wire are pressed against each other with a spring bias, so brazing does not cause damage to the parts due to high temperature or thermal stress. I don't get it. Moreover, since they are pressed against each other in a spring-biased state, the electrical connection state can be reliably maintained even against thermal stress and other stresses. Also, unlike the case of brazing, the attachment of the connection part can be easily removed and repaired.
〈実施例〉 第１図は本発明の第１の実施例を示す断面図である。<Example> FIG. 1 is a sectional view showing a first embodiment of the present invention.
気化器１の表面にセラミックヒータ２０のセラミック体
２１が取り付けられている。前記セラミック体２１は上
下の部分２１ａ、２１ｂからなり、下の部分２１ｂの表
面に発熱体２２（例えばＷ−Ｍ、系）のペーストを印刷
し、これを焼成して発熱体２２とする。その後セラミッ
ク体２１の上部２１ａを張り合わせる。その場合前記発
熱体２２の端子部２２ａは前記上部２１ａで被覆せず、
露出状態とする。前記発熱体２２の端子部２２ａの表面
にタングステンをメタライジングし、さらにニッケルメ
ッキをした上で金メツキを施す。この金メツキにより端
子部２２ａの酸化が防止される。A ceramic body 21 of a ceramic heater 20 is attached to the surface of the vaporizer 1. The ceramic body 21 consists of upper and lower parts 21a and 21b, and a paste of a heating element 22 (for example, WM type) is printed on the surface of the lower part 21b, and the paste is fired to form the heating element 22. After that, the upper part 21a of the ceramic body 21 is pasted together. In that case, the terminal part 22a of the heating element 22 is not covered with the upper part 21a,
Leave it exposed. The surface of the terminal portion 22a of the heating element 22 is metallized with tungsten, further plated with nickel, and then plated with gold. This gold plating prevents the terminal portion 22a from oxidizing.
なお、発熱体２２としては上記に限らず、ＷＣｌＴｉＮ
などを主成分とするペーストを印刷し、焼成したもので
あってもよく、更にＷ％ Ｍｏなどの線状体、薄板など
をセラミック体２１中に埋設したものであってもよい。Note that the heating element 22 is not limited to the above, but may be WClTiN.
The ceramic body 21 may be made by printing and firing a paste containing as a main component, or by embedding a linear body, a thin plate, etc. of W% Mo or the like in the ceramic body 21.
一方、リード線２３はその端子２３ａを板バネ体とし、
該板ハネ体の端子２３ａを図示しない支持具で前記発熱
体２２の端子部２２ａに押し当てた状態に保持する。前
記端子部２２ａに押し当たるバネ体の端子２３ａ部分に
は金メツキを施してもよい。前記板バネ体の端子２３ａ
はリード線２３に溶接または機械的に接合されることが
できる。リード線２３及び仮バネ体の端子２３ａ共にス
テンレス製とすることができる。電流はリード線２３か
ら端子２３ａ、端子部２２ａを経て発熱体２２に供給さ
れる。リード線側の端子２３ａがバネ付勢状態で発熱体
の端子部２２ａに押し当たっているので、多少の熱応力
によっては断線することがない。またロウ付は部がない
ので、多少の高温や熱応力の繰り返しによって破損する
こともない。On the other hand, the lead wire 23 has its terminal 23a as a leaf spring body,
The terminal 23a of the plate spring body is held pressed against the terminal portion 22a of the heating element 22 by a support (not shown). A portion of the terminal 23a of the spring body that presses against the terminal portion 22a may be plated with gold. Terminal 23a of the leaf spring body
can be welded or mechanically joined to the lead wire 23. Both the lead wire 23 and the terminal 23a of the temporary spring body can be made of stainless steel. Current is supplied from the lead wire 23 to the heating element 22 via the terminal 23a and the terminal portion 22a. Since the terminal 23a on the lead wire side is pressed against the terminal portion 22a of the heating element in a spring-biased state, the wire will not break due to some thermal stress. Also, since there are no parts in brazing, there is no risk of damage due to repeated exposure to high temperatures or thermal stress.
第２図は本発明の第２の実施例を示す断面図である。FIG. 2 is a sectional view showing a second embodiment of the invention.
本実施例ではリード線３３の端子３３ａをコイルバネ体
で構成し、このコイルバネ体の端子３３ａを図示しない
支持具で発熱体２２の端子部２２ａに押し当てて保持す
る。前記端子３３ａの端子部２２ａとの接触部分には金
メツキを施してもよい。他の構成は第１実施例の場合と
同様である。同一部材には同一の符号を付して示す。In this embodiment, the terminal 33a of the lead wire 33 is formed of a coil spring body, and the terminal 33a of the coil spring body is held against the terminal portion 22a of the heating element 22 by a support (not shown). The contact portion of the terminal 33a with the terminal portion 22a may be plated with gold. The other configurations are the same as in the first embodiment. Identical members are indicated with the same reference numerals.
前記コイルバネ体３３ａの支持具としては、例えば第３
図に示す如きボルト４１、ナツト４２を用いてもよい。For example, a third supporter for the coil spring body 33a may be used.
Bolts 41 and nuts 42 as shown in the figure may also be used.
すなわち第３図に示す第３実施例では、リード綿３３の
コイルバネ体からなる端子３３ａをボルト４１とナツト
４２により発熱体２２の端子部２２ａに押し当てて電気
接続している。That is, in the third embodiment shown in FIG. 3, a terminal 33a made of a coiled spring body of a cotton lead 33 is pressed against a terminal portion 22a of a heating element 22 using a bolt 41 and a nut 42 for electrical connection.
第４図は本発明の第４の実施例を示す断面図である。FIG. 4 is a sectional view showing a fourth embodiment of the present invention.
本実施例では、リード線５３のバネ類を有さｔｘい端子
５３ａを発熱体２２の端子部２２ａに当てがい、前記端
子５３ａをガイシ６１を介してバネ６２及び押さえ板６
３で押圧し、これにより発熱体２２の端子部２２ａにリ
ード線端子５３ａをバネ付勢状態で押し当てている。な
お押さえ板６３はセラミック体２１若しくは気化器１側
の図示しない固定枠等に嵌合されて固定されることにな
る。In this embodiment, a terminal 53a having a spring or the like of a lead wire 53 is applied to a terminal portion 22a of a heating element 22, and the terminal 53a is connected to a spring 62 and a pressing plate 6 through an insulator 61.
3, thereby pressing the lead wire terminal 53a against the terminal portion 22a of the heating element 22 in a spring biased state. Note that the pressing plate 63 is fitted and fixed to a fixing frame (not shown) on the ceramic body 21 or the vaporizer 1 side.
〈効果〉
本発明は以上の構成よりなり、請求項１に記載のセラミ
ックヒータによれば、リード線と発熱体とをロウ付けす
ることなく、リード線の端子と発熱体の端子部とを相互
にハネ付勢状態で押し当てて電気接続するように構成し
たので、高温や熱応力によっても簡単に接触が断たれた
り接触部が破撰されてしまうことがない。よって長期に
亘って安定した発熱が確保できる。またロウ付けの如く
一体不可分に固着することがないので、リード線と発熱
体との相互の取り付は及び取り外し、及び補修を容易に
行うことができる。<Effects> The present invention has the above configuration, and according to the ceramic heater according to claim 1, the terminal of the lead wire and the terminal portion of the heating element can be connected to each other without brazing the lead wire and the heating element. Since the structure is configured such that the electrical connection is made by pressing the contact portion in a spring-biased state, the contact will not be easily broken or the contact portion will not break even due to high temperature or thermal stress. Therefore, stable heat generation can be ensured over a long period of time. Furthermore, since the lead wires and the heating element are not inseparably fixed as in the case of brazing, mutual attachment, removal, and repair of the lead wire and the heating element can be easily performed.
第１図は本発明の第１実施例を示す断面図、第２図は本
発明の第２実施例を示す断面図、第３図は本発明の第３
実施例を示す断面図、第４図は本発明の第４実施例を示
す断面図、第５図は従来例を示す断面図である。
２０：セラミックヒータ
２１：セラミック体
２２：発熱体
２２ａ：発熱体の端子部
２３．３３．５３： リード線FIG. 1 is a sectional view showing a first embodiment of the invention, FIG. 2 is a sectional view showing a second embodiment of the invention, and FIG. 3 is a sectional view showing a third embodiment of the invention.
FIG. 4 is a sectional view showing a fourth embodiment of the present invention, and FIG. 5 is a sectional view showing a conventional example. 20: Ceramic heater 21: Ceramic body 22: Heating element 22a: Terminal part of heating element 23.33.53: Lead wire
Claims (1)
クヒータであって、前記発熱体の端子部を前記セラミッ
ク体表面に露出させると共に、該露出した端子部に対し
てリード線の端子をバネ付勢状態で押し当てて電気接続
するように構成したことを特徴とするセラミックヒータ
。(1) A ceramic heater in which a heating element is embedded in a ceramic body, wherein a terminal part of the heating element is exposed on the surface of the ceramic body, and a terminal of a lead wire is attached with a spring to the exposed terminal part. A ceramic heater characterized in that it is configured to be electrically connected by pressing against the ceramic heater in a biased state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2469690A JPH03230489A (en) | 1990-02-02 | 1990-02-02 | Ceramic heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2469690A JPH03230489A (en) | 1990-02-02 | 1990-02-02 | Ceramic heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03230489A true JPH03230489A (en) | 1991-10-14 |
Family
ID=12145336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2469690A Pending JPH03230489A (en) | 1990-02-02 | 1990-02-02 | Ceramic heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03230489A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10347222A1 (en) * | 2003-09-16 | 2005-04-21 | Rational Ag | Heating element for a cooking appliance |
| JP2006091009A (en) * | 2004-08-25 | 2006-04-06 | Ngk Spark Plug Co Ltd | Ceramic electronic functional member and gas sensor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4317230Y1 (en) * | 1965-04-22 | 1968-07-17 |
-
1990
- 1990-02-02 JP JP2469690A patent/JPH03230489A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4317230Y1 (en) * | 1965-04-22 | 1968-07-17 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10347222A1 (en) * | 2003-09-16 | 2005-04-21 | Rational Ag | Heating element for a cooking appliance |
| DE10347222B4 (en) * | 2003-09-16 | 2005-09-22 | Rational Ag | Heating element for cooking appliances |
| JP2006091009A (en) * | 2004-08-25 | 2006-04-06 | Ngk Spark Plug Co Ltd | Ceramic electronic functional member and gas sensor |
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