JPH0357037Y2 - - Google Patents
Info
- Publication number
- JPH0357037Y2 JPH0357037Y2 JP18888287U JP18888287U JPH0357037Y2 JP H0357037 Y2 JPH0357037 Y2 JP H0357037Y2 JP 18888287 U JP18888287 U JP 18888287U JP 18888287 U JP18888287 U JP 18888287U JP H0357037 Y2 JPH0357037 Y2 JP H0357037Y2
- Authority
- JP
- Japan
- Prior art keywords
- graphite
- terminal
- heat
- heat generating
- graphite heater
- 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
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 229910002804 graphite Inorganic materials 0.000 claims description 20
- 239000010439 graphite Substances 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 4
- 230000020169 heat generation Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、高温発熱体として用いられる黒鉛ヒ
ーター、とくに省エネルギー型黒鉛ヒーターに関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a graphite heater used as a high-temperature heating element, and particularly to an energy-saving graphite heater.
黒鉛ヒーターは、抵抗発熱型のヒーターとし
て、2000℃以上の高温が得られる数少ない高温発
熱体の一つであり、多方面の工業分野で有用され
ている。
Graphite heaters are one of the few high-temperature heating elements that can generate temperatures of 2000°C or higher, and are useful in many industrial fields.
この黒鉛ヒーターは、発熱部を有効に発熱させ
るために、発熱部の抵抗をターミナル部の抵抗よ
りも高くなるように設計されている。例えば、タ
ーミナル部の断面積を発熱部の断面積よりも大き
くした、いわゆる杵型形状の黒鉛ヒーターが一般
的に使用されている。 This graphite heater is designed so that the resistance of the heat generating part is higher than the resistance of the terminal part in order to generate heat effectively in the heat generating part. For example, what is commonly used is a so-called pestle-shaped graphite heater in which the cross-sectional area of the terminal portion is larger than the cross-sectional area of the heat generating portion.
しかしながら、黒鉛は導電性が高いので、発熱
部を有効に発熱させるためには、ターミナル部の
断面積を発熱部の断面積の約10倍以上に設計する
必要がある。また、黒鉛は熱伝導性も大きいの
で、発熱部からの伝熱によつてターミナル部も高
温になり、ターミナル部からの熱放散が増大する
とともに配線金具の損傷を引起こすので、冷却水
を循環してターミナル部を強制冷却する手段が講
じられている。 However, since graphite has high conductivity, in order to effectively generate heat from the heat generating part, it is necessary to design the cross-sectional area of the terminal part to be approximately 10 times or more larger than the cross-sectional area of the heat generating part. In addition, since graphite has high thermal conductivity, heat transfer from the heat generating part causes the terminal part to become high temperature, increasing heat dissipation from the terminal part and causing damage to the wiring fittings, so the cooling water is circulated. Measures are taken to forcibly cool the terminal section.
このように従来の黒鉛ヒーターは、ターミナル
部からの熱放散と強制冷却によりエネルギーが消
費されるので、消費電力が有効に発熱エネルギー
として利用されない問題点があつた。本考案は、
この問題点を排除し、エネルギー効率の高い黒鉛
ヒーターを提供するものである。
As described above, in the conventional graphite heater, energy is consumed due to heat dissipation from the terminal portion and forced cooling, so there is a problem that the consumed power is not effectively utilized as heat generation energy. This idea is
The present invention aims to eliminate this problem and provide a graphite heater with high energy efficiency.
すなわち、本考案の黒鉛ヒーターは、ターミナ
ル部を周期律表ａ，ａ，ａに属する金属の
炭化物で構成したことを特徴とするものである。
That is, the graphite heater of the present invention is characterized in that the terminal portion is made of a carbide of a metal belonging to groups a, a, and a of the periodic table.
以下本考案を図示した一実施例にしたがつて説
明する。 The present invention will be described below with reference to an illustrated embodiment.
第１図は、本考案の黒鉛ヒーターを例示したも
のであり、第２図は、ターミナルの接続部を拡大
して示したものである。第１図において、１は黒
鉛製の発熱部、２は周期律表ａ，ａ，ａに
属する金属の炭化物で構成されたターミナル部で
ある。このターミナル部２は、発熱部と同材質の
黒鉛部材３と第２図に例示した楔型形状による嵌
合などの適宜な方法で接続されている。 FIG. 1 shows an example of the graphite heater of the present invention, and FIG. 2 shows an enlarged view of the connecting portion of the terminal. In FIG. 1, 1 is a heat generating part made of graphite, and 2 is a terminal part made of a carbide of a metal belonging to a, a, a of the periodic table. This terminal portion 2 is connected to a graphite member 3 made of the same material as the heat generating portion by an appropriate method such as wedge-shaped fitting illustrated in FIG.
この周期律表ａ，ａ，ａに属する金属の
炭化物としては、TiC，ZrC，HfC，VC，NbC，
TaC，Cr2C2，Mo2Ｃ，WCなどが用いられる。
これらの金属炭化物は、電気抵抗が黒鉛よりも小
さいので通電によるターミナル部の発熱が低減す
るとともに、熱伝導率も黒鉛より小さいので、通
電発熱にともなう発熱部からの熱流入および放熱
量が減少する。更に熱膨張率は黒鉛と近似するの
で、高温下における熱膨張の差異に基づく接続部
の緩みや割損も生じ難い。 Carbides of metals belonging to a, a, a of the periodic table include TiC, ZrC, HfC, VC, NbC,
TaC, Cr 2 C 2 , Mo 2 C, WC, etc. are used.
These metal carbides have a lower electrical resistance than graphite, which reduces heat generation at the terminal when energized, and also have a lower thermal conductivity than graphite, which reduces heat inflow and heat radiation from the heat generating part due to energization. . Furthermore, since the coefficient of thermal expansion is similar to that of graphite, loosening or breakage of the connection due to differences in thermal expansion at high temperatures is unlikely to occur.
〔考案の効果〕
上記説明したように本考案の黒鉛ヒーターは、
ターミナル部の発熱および高温化を抑制すること
ができるので、強制冷却によるエネルギー浪費の
低減をはかることができる。[Effects of the invention] As explained above, the graphite heater of the invention has the following effects:
Since heat generation and high temperature of the terminal portion can be suppressed, energy wastage due to forced cooling can be reduced.
第１図は、本考案の黒鉛ヒーターを例示した横
断面図、第２図はターミナルの接続部の拡大図で
ある。
１……発熱部、２……ターミナル部、３……黒
鉛部材。
FIG. 1 is a cross-sectional view illustrating the graphite heater of the present invention, and FIG. 2 is an enlarged view of the connecting portion of the terminal. 1... Heat generating part, 2... Terminal part, 3... Graphite member.
Claims (1)
する金属の炭化物で構成してなる黒鉛ヒーター。 A graphite heater whose terminal portion is made of a carbide of a metal belonging to a, a, or a of the periodic table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18888287U JPH0357037Y2 (en) | 1987-12-14 | 1987-12-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18888287U JPH0357037Y2 (en) | 1987-12-14 | 1987-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0192791U JPH0192791U (en) | 1989-06-19 |
| JPH0357037Y2 true JPH0357037Y2 (en) | 1991-12-25 |
Family
ID=31479947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18888287U Expired JPH0357037Y2 (en) | 1987-12-14 | 1987-12-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0357037Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100470790B1 (en) * | 1999-11-30 | 2005-02-21 | 마쯔시다덴기산교 가부시키가이샤 | Infrared light bulb, heating device, production method for infrared light bulb |
-
1987
- 1987-12-14 JP JP18888287U patent/JPH0357037Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0192791U (en) | 1989-06-19 |
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