JPH0434068B2 - - Google Patents
Info
- Publication number
- JPH0434068B2 JPH0434068B2 JP63198398A JP19839888A JPH0434068B2 JP H0434068 B2 JPH0434068 B2 JP H0434068B2 JP 63198398 A JP63198398 A JP 63198398A JP 19839888 A JP19839888 A JP 19839888A JP H0434068 B2 JPH0434068 B2 JP H0434068B2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- heat
- heating element
- furnace
- 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 - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229910002804 graphite Inorganic materials 0.000 claims description 10
- 239000010439 graphite Substances 0.000 claims description 10
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 238000000034 method Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、炭素又は黒鉛質の発熱体を設けた高
温加熱炉に関するもので、更に詳細には該発熱体
の端子部からの放熱量を減少させる省エネルギー
対策にかかる発明である。[Detailed Description of the Invention] (a) Industrial Application Field The present invention relates to a high-temperature heating furnace equipped with a carbon or graphite heating element, and more specifically relates to the amount of heat released from the terminal portion of the heating element. This invention relates to energy saving measures that reduce energy consumption.
(ロ) 従来技術
従来の高温加熱炉を添付図により詳細に説明す
ると、第１図は3000℃まで昇温できる高温加熱炉
で、図の上半分Ｂ部は従来からの黒鉛質の発熱体
で、発熱部５は電気抵抗を大きくするために径を
小さくし、端子柄部６は径を大きくすることで電
気抵抗を低くして発熱を抑えている。(b) Prior art To explain a conventional high-temperature heating furnace in detail with reference to the attached drawings, Figure 1 shows a high-temperature heating furnace that can heat up to 3000°C, and the upper half of the diagram, section B, is a conventional graphite heating element. The diameter of the heat generating part 5 is made small to increase the electrical resistance, and the diameter of the terminal handle part 6 is made large to lower the electrical resistance and suppress heat generation.
通常、上記発熱部５は断面積を小さくするため
に中空管とするが、黒鉛の固有の強度からして、
上記発熱部５の径はあまりに小さくすることはで
きない。このため、発熱体の加熱は低電圧・大電
流方式となる。これは、高電圧・小電流方式と比
較して、トランスの巻線や導線の径が大きくなる
などの不利がある。特に大きい損失は、炉外への
熱放散である。 Usually, the heat generating part 5 is made of a hollow tube in order to reduce the cross-sectional area, but considering the inherent strength of graphite,
The diameter of the heat generating portion 5 cannot be made too small. For this reason, the heating element is heated using a low voltage/high current method. This has disadvantages, such as the diameter of the transformer winding and conducting wire, compared to the high-voltage/low-current method. A particularly large loss is heat dissipation outside the furnace.
第１図Ｂ部で示しまた前述した通り、端子柄部
６は発熱を小さくするため、径を大きくして電気
抵抗を小さくしている。端子柄部６の発熱部５と
の接合部は加熱室２にさらされているので、発熱
部５からの伝熱と加熱室２からの放射により高温
となる。この熱は端子部６を通り、炉外に放出さ
れる。 As shown in part B of FIG. 1 and as described above, the terminal handle 6 has a large diameter to reduce electrical resistance in order to reduce heat generation. Since the joint portion of the terminal handle portion 6 with the heat generating portion 5 is exposed to the heating chamber 2, the temperature becomes high due to heat transfer from the heat generating portion 5 and radiation from the heating chamber 2. This heat passes through the terminal portion 6 and is released to the outside of the furnace.
ところで、導線接続用の金属端子７は通常水冷
されているので、この端子柄部６は炉内温度（例
えば、2600℃）から端子部７の温度（例えば80
℃）に渡る大きな温度傾斜にさらされる。 By the way, since the metal terminal 7 for connecting the conductor wire is usually water-cooled, the terminal handle 6 has a temperature range from the furnace temperature (for example, 2600°C) to the temperature of the terminal part 7 (for example, 80°C).
exposed to large temperature gradients over temperatures (°C).
端子柄部６以外にも、端子保護パイプ８も黒鉛
質で端子と同様に炉内の熱を炉外へ放熱する。放
熱量はこれらの熱伝導度と温度傾斜度と熱伝導面
積に比例する。即ち、端子柄部６の径（断面積）
に比例する。 In addition to the terminal handle 6, the terminal protection pipe 8 is also made of graphite and radiates heat inside the furnace to the outside of the furnace in the same way as the terminal. The amount of heat dissipated is proportional to these thermal conductivity, temperature gradient, and heat conduction area. That is, the diameter (cross-sectional area) of the terminal handle 6
is proportional to.
従来型の発熱体の炉外への放熱量は、このよう
にして極めて大きいことが大きな問題であり、そ
の解決が求められて来た。 The extremely large amount of heat released from the conventional heating element to the outside of the furnace is a major problem, and a solution to this problem has been sought.
(ハ) 発明の開示と実施例
本発明においては、第１図にＡにより示される
部分の如く、発熱部５′と端子柄部６′の径が従来
と比較して小さい。(C) Disclosure and Examples of the Invention In the present invention, as shown by A in FIG. 1, the diameters of the heat generating portion 5' and the terminal handle portion 6' are smaller than those of the prior art.
本発明では、発熱部５′を炭素繊維強化炭素で
作ることにより、従来の黒鉛の数倍の強度を持つ
中空管の発熱部５′を作ることが可能となり、従
来型と比較して中空管の厚さを薄くできるのであ
る。このため、電気抵抗が高くなり、電圧が高く
電流は小さくなる。 In the present invention, by making the heat generating part 5' from carbon fiber-reinforced carbon, it is possible to make the heat generating part 5' in the form of a hollow tube that has several times the strength of conventional graphite. This allows the thickness of the empty tube to be reduced. Therefore, the electrical resistance becomes high, the voltage becomes high, and the current becomes small.
以下の実施例により、本発明と従来からの黒鉛
発熱体とを比較して説明する。 The following examples will be used to compare and explain the present invention and conventional graphite heating elements.
従来型の発熱体の発熱部５と端子柄部６の断面
積を、それぞれ424mm2（外径32mm、内径22mm）、
2375.8mm2（外径55mm）としたとき、発熱部５と端
子柄部６の断面積の比は１：5.6である。 The cross-sectional areas of the heat generating part 5 and the terminal handle part 6 of the conventional heating element are each 424 mm 2 (outer diameter 32 mm, inner diameter 22 mm),
When it is 2375.8 mm 2 (outer diameter 55 mm), the ratio of the cross-sectional area of the heat generating part 5 and the terminal handle part 6 is 1:5.6.
これに対して、本発明では発熱体に炭素繊維強
化炭素を使用したので、上記の如く発熱体の径を
小さくすることができる。この実施例では、炭素
繊維強化炭素を発熱体としたので、その発熱部
５′の断面積を減少することができて、188.5mm2
（外径32mm、内径28mm）とした。このときの端子
柄部６′の断面積は、従来例との放熱量の比較が
容易に行なわれるように、前記した従来例の発熱
部５と端子柄部６の断面積の比（１：5.6）にな
らつて1057.8mm2（外径36.7mm）とした。この断面
積の比は、従来型とほぼ等しい１：5.61である。 On the other hand, in the present invention, since carbon fiber reinforced carbon is used for the heating element, the diameter of the heating element can be reduced as described above. In this embodiment, since carbon fiber reinforced carbon is used as the heating element, the cross-sectional area of the heating part 5' can be reduced to 188.5 mm 2
(outer diameter 32 mm, inner diameter 28 mm). The cross-sectional area of the terminal handle 6' at this time is determined by the ratio (1: 5.6), it was set to 1057.8 mm 2 (outer diameter 36.7 mm). The ratio of this cross-sectional area is 1:5.61, which is almost the same as that of the conventional type.
この実施例での端子柄部からの放熱は、単純に
比較すると、それぞれの断面積（径）に比例す
る。 When simply compared, the heat radiation from the terminal handles in this embodiment is proportional to their respective cross-sectional areas (diameters).
従つて、従来型の端子柄部と本発明の端子柄部
の断面積は、それぞれ2375.8mm2と1057.8mm2である
から、その比は2.246：１であり、55.48％の放熱
量が減少することとなる。また、本発明になる発
熱部５′の加熱（2000℃付近で16〜18W／cm2）は
従来品に比して以下の通りに高電圧・小電流方式
となる。 Therefore, since the cross-sectional areas of the conventional terminal handle and the terminal handle of the present invention are 2375.8 mm 2 and 1057.8 mm 2 , respectively, the ratio is 2.246:1, and the amount of heat dissipation is reduced by 55.48%. That will happen. Further, the heating of the heat generating part 5' according to the present invention (16 to 18 W/cm 2 at around 2000° C.) is performed using a higher voltage/lower current method compared to conventional products as described below.
１ 従来品：外形32mm・内径22mm（長さ１ｍとし
て）、断面積424mm2、抵抗0.018Ω、16KWとして
２ 本発明品：外形32mm・内径28mm（長さ１ｍと
して）、断面積188.5mm2、抵抗0.04Ω、16KWと
して
電力Ｐ（Ｗ）＝I2（Ａ）×Ｒ（Ω）
∴Ｉ＝√
１はI1＝√160000.018＝942.8A
２はI2＝√160000.04＝632.5A
電圧Ｅ（Ｖ）＝Ｉ（Ａ）×Ｒ（Ω）
１はE1＝942.8×0.018＝17.0（Ｖ）
２はE2＝632.5×0.04＝25.3（Ｖ）
従つて、16KWで加熱するときは、従来品は電
圧17.0ボルトで電流942.8アンペアで低電圧・大
電流方式であり、一方本発明品は電圧25.3ボルト
で電流632.5アンペアで高電圧・小電流方式とな
る。1 Conventional product: Outer diameter 32mm, inner diameter 22mm (assuming length 1m), cross-sectional area 424mm 2 , resistance 0.018Ω, 16KW 2 Invention product: Outer diameter 32mm, inner diameter 28mm (assuming length 1m), cross-sectional area 188.5mm 2 , Assuming resistance of 0.04Ω and 16KW, power P (W) = I 2 (A) × R (Ω) ∴I = √ 1 is I 1 = √160000.018 = 942.8A 2 is I 2 = √160000.04 = 632.5A Voltage E (V ) = I (A) × R (Ω) 1 is E 1 = 942.8 × 0.018 = 17.0 (V) 2 is E 2 = 632.5 × 0.04 = 25.3 (V) Therefore, when heating with 16KW, the conventional product It is a low voltage/high current method with a voltage of 17.0 volts and a current of 942.8 amperes, whereas the product of the present invention is a high voltage/small current method with a voltage of 25.3 volts and a current of 632.5 amperes.
なお、図中１は水冷された炉殻、３は断熱材、
４は炉内壁を示すものである。 In addition, in the figure, 1 is the water-cooled furnace shell, 3 is the insulation material,
4 indicates the inner wall of the furnace.
(ニ) 発明の効果
本発明による高温加熱炉は、従来型の黒鉛質又
は炭素質の発熱体を炭素繊維強化炭素で製作する
ことにより、上述したように放熱量が55％以上節
減できるのである。(d) Effects of the Invention The high-temperature heating furnace according to the present invention can reduce heat radiation by more than 55% as described above by manufacturing the conventional graphite or carbonaceous heating element with carbon fiber-reinforced carbon. .
また、図に示す端子保護パイプ８，８′も黒鉛
質で製作されているので、これも炭素繊維強化炭
素で製作することで厚さを1/2とすることができ、
放熱量が更に節減される効果がある。 In addition, since the terminal protection pipes 8 and 8' shown in the figure are also made of graphite, the thickness can be reduced to 1/2 by making them also of carbon fiber reinforced carbon.
This has the effect of further reducing the amount of heat radiation.
さらに、本発明によれば発熱体の加熱は高電
圧・小電流方式となるので、炭素金具７′、導線、
トランスの二次巻線も小さくできるなど、多くの
附随的な効果を得ることもできるのである。 Furthermore, according to the present invention, the heating element is heated by a high voltage/small current method, so the carbon metal fitting 7', the conducting wire,
Many additional benefits can also be obtained, such as the ability to reduce the size of the transformer's secondary winding.
第１図は高温加熱炉の断面図で、図中Ａは本発
明になる発熱体を、またＢは従来の発熱体を比例
寸法的に示すものである。
符号説明、１……水冷炉殻、２……加熱室、３
……断熱材、４……炉内壁、５，５′……発熱部、
６，６′……端子柄部、７，７′……金属端子、
８，８′……黒鉛パイプ。
FIG. 1 is a sectional view of a high-temperature heating furnace, in which A shows a heating element according to the present invention, and B shows a conventional heating element in proportional dimensions. Description of symbols, 1...Water-cooled furnace shell, 2...Heating chamber, 3
...insulation material, 4...furnace inner wall, 5,5'...heat generating part,
6, 6'...terminal handle, 7,7'...metal terminal,
8,8'...graphite pipe.
Claims (1)
であつて、該発熱体が炭素繊維で強化されてなる
ことを特徴とする高温加熱炉。1. A high-temperature heating furnace equipped with a carbon or graphite heating element, characterized in that the heating element is reinforced with carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19839888A JPH0250079A (en) | 1988-08-09 | 1988-08-09 | High-temperature heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19839888A JPH0250079A (en) | 1988-08-09 | 1988-08-09 | High-temperature heating furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0250079A JPH0250079A (en) | 1990-02-20 |
| JPH0434068B2 true JPH0434068B2 (en) | 1992-06-04 |
Family
ID=16390469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19839888A Granted JPH0250079A (en) | 1988-08-09 | 1988-08-09 | High-temperature heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0250079A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9094588B2 (en) | 2004-06-09 | 2015-07-28 | Cognex Corporation | Human machine-interface and method for manipulating data in a machine vision system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4936255B2 (en) * | 2007-10-22 | 2012-05-23 | 西芝電機株式会社 | Piston device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110411A (en) * | 1981-12-24 | 1983-07-01 | Toho Rayon Co Ltd | Manufacture of carbonaceous material |
| JPS58138981A (en) * | 1982-02-12 | 1983-08-18 | 東レ株式会社 | Electric heating furnace |
| JPS59138094A (en) * | 1983-01-25 | 1984-08-08 | 東レ株式会社 | Graphite resistance heater reinforced with carboneceous fiber |
| JPS59177885A (en) * | 1983-03-29 | 1984-10-08 | 東レ株式会社 | Graphite resistance heater |
| JPS61213486A (en) * | 1985-03-20 | 1986-09-22 | 東邦レーヨン株式会社 | High-temperature treatment furnace |
-
1988
- 1988-08-09 JP JP19839888A patent/JPH0250079A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110411A (en) * | 1981-12-24 | 1983-07-01 | Toho Rayon Co Ltd | Manufacture of carbonaceous material |
| JPS58138981A (en) * | 1982-02-12 | 1983-08-18 | 東レ株式会社 | Electric heating furnace |
| JPS59138094A (en) * | 1983-01-25 | 1984-08-08 | 東レ株式会社 | Graphite resistance heater reinforced with carboneceous fiber |
| JPS59177885A (en) * | 1983-03-29 | 1984-10-08 | 東レ株式会社 | Graphite resistance heater |
| JPS61213486A (en) * | 1985-03-20 | 1986-09-22 | 東邦レーヨン株式会社 | High-temperature treatment furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9094588B2 (en) | 2004-06-09 | 2015-07-28 | Cognex Corporation | Human machine-interface and method for manipulating data in a machine vision system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0250079A (en) | 1990-02-20 |
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