JP2002231510A - Current-control resistor element - Google Patents
Current-control resistor elementInfo
- Publication number
- JP2002231510A JP2002231510A JP2001025073A JP2001025073A JP2002231510A JP 2002231510 A JP2002231510 A JP 2002231510A JP 2001025073 A JP2001025073 A JP 2001025073A JP 2001025073 A JP2001025073 A JP 2001025073A JP 2002231510 A JP2002231510 A JP 2002231510A
- Authority
- JP
- Japan
- Prior art keywords
- current
- resistance element
- current control
- holder
- resistor
- 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.)
- Granted
Links
Landscapes
- Thermistors And Varistors (AREA)
- Non-Adjustable Resistors (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、電気炉等の発熱体
の制御に用いる電流制御抵抗素子に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a current control resistance element used for controlling a heating element such as an electric furnace.
【0002】[0002]
【従来の技術および発明が解決しようとする課題】従
来、0.01オーム以下の温発生用の発熱体に、100
乃至400ボルトの電圧を印加したとき、初期の過大電
流によって半導体を利用している電力調整器の破壊が多
く、また、変圧器を利用して100ボルト以下の電圧で
発熱体を暖めて発熱体の抵抗値が上昇してから規定の電
圧を加えるという手段が多い。2. Description of the Related Art Conventionally, a heating element for generating a temperature of 0.01 ohm or less has
When a voltage of ~ 400 volts is applied, a power regulator using a semiconductor is often destroyed due to an initial excessive current, and a heating element is heated using a transformer at a voltage of 100 volts or less. In many cases, a specified voltage is applied after the resistance value of the increases.
【0003】また、スライダックによる0ボルトからス
タートする電圧調整方法では、大電力にしたがって大型
になり、電気炉等の内部に納まらない欠点があり、発熱
温度の調節用の自動調整装置が大型になるので、常に手
動で調節するという欠点がある。[0003] In addition, the voltage adjustment method starting from 0 volts by the Slidac has a drawback that it cannot be accommodated in an electric furnace or the like due to large power, and the automatic adjustment device for adjusting the heat generation temperature becomes large. Therefore, there is a disadvantage that the adjustment is always performed manually.
【0004】また、抵抗体を使用して初期の過大電流を
防止することはできるが、発熱体の使用電力が10キロ
ワット以上で小型の電気炉には抵抗体が大きく、抵抗体
の発熱の放熱を考慮する欠点があり、発熱体の発熱温度
が1500℃以上の電気炉では、電気炉内部に一緒に入
れると、抵抗体はニクロム線が多いので溶融してしまう
ので、通常は使用されていない。Although a resistor can be used to prevent an initial excess current, the power used by the heating element is 10 kilowatts or more, and a small electric furnace has a large resistance, and the heat generated by the resistor is radiated. In an electric furnace where the heating temperature of the heating element is 1500 ° C. or higher, the resistor is melted because it has many nichrome wires when put together inside the electric furnace, so it is not normally used. .
【0005】また、大電流用の半導体整流素子を電流制
限用に使用できるが、半導体の内部抵抗値が段々と低い
抵抗値に変化しないという欠点と、自己温度の上昇によ
る熱破壊が生じ、放熱板と冷却に必要な経費がかかると
いう欠点がある。Although a semiconductor rectifying element for a large current can be used for current limiting, there is a disadvantage that the internal resistance of the semiconductor does not change to a gradually lower resistance, and a heat destruction occurs due to an increase in self-temperature, resulting in heat dissipation. The disadvantage is that the costs associated with the plate and cooling are high.
【0006】本発明は、上記従来の欠点を解決するもの
であって、低い抵抗値の発熱体の初期の過大電流による
半導体電力調整器の破壊防止と、変圧器を使用しないで
直接、発熱体を希望電圧に制御することができる電流制
御抵抗素子を提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned disadvantages of the prior art, which prevents a semiconductor power regulator from being destroyed due to an initial excessive current of a heating element having a low resistance value, and directly generates a heating element without using a transformer. It is an object of the present invention to provide a current control resistance element that can control the current to a desired voltage.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明の請求項1記載の電流制御抵抗素子は、セラ
ミック材からなる筒状のホルダーの内部に、体積比90
%ないし10%のテルル素材と、体積比10%ないし9
0%のカーボン素材とからなる合成抵抗素子を配設し、
該合成抵抗素子の両端部に接続する金属材からなる外部
接続端子を前記ホルダーの両端部に固定してなることを
特徴とし、また、請求項2記載の電流制御抵抗素子は、
セラミック材からなる筒状のホルダーの内部に、重量比
80%ないし20%のテルル素材と、重量比20%ない
し80%の金属素材とからなる合成抵抗素子を配設し、
該合成抵抗素子の両端部に接続する金属材からなる外部
接続端子を前記ホルダーの両端部に固定してなることを
特徴とする。According to a first aspect of the present invention, there is provided a current control resistance element having a volume ratio of 90% inside a cylindrical holder made of a ceramic material.
% To 10% tellurium material and 10% to 9% by volume
Arrange a synthetic resistance element made of 0% carbon material,
An external connection terminal made of a metal material connected to both ends of the synthetic resistance element is fixed to both ends of the holder, and the current control resistance element according to claim 2,
A synthetic resistance element made of a tellurium material having a weight ratio of 80% to 20% and a metal material having a weight ratio of 20% to 80% is disposed inside a cylindrical holder made of a ceramic material,
An external connection terminal made of a metal material connected to both ends of the combined resistance element is fixed to both ends of the holder.
【0008】[0008]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しつつ説明する。図1〜図5は、本発明の電流制
御抵抗素子の1実施形態を示し、図1は合成抵抗素子の
斜視図、図2は電流制御抵抗素子の平面図、図3は電流
制御抵抗素子の電気回路図、図4は電流制御抵抗素子の
電気的特性を説明するための図、図5は電流制御抵抗素
子の応用例を示す電気回路図である。Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of a current control resistor according to the present invention. FIG. 1 is a perspective view of a composite resistor, FIG. 2 is a plan view of the current control resistor, and FIG. FIG. 4 is an electric circuit diagram, FIG. 4 is a diagram for explaining electric characteristics of the current control resistance element, and FIG. 5 is an electric circuit diagram showing an application example of the current control resistance element.
【0009】図1において、本発明の電流制御抵抗素子
を構成する合成抵抗素子1は、テルル素材とカーボン素
材との粉体を混合して、任意の形状で任意の高抵抗値な
いし低抵抗値を得るために、体積比90%ないし10%
のテルル素材の粉体に、体積比10%ないし90%のカ
ーボン素材の粉体を混合し、この混合粉体を任意の形状
にプレス圧縮して成形される。なお、図1の実施形態に
おいては、合成抵抗素子1は円柱形状に成形されている
が、角柱状、楕円柱状等、任意である。In FIG. 1, a composite resistance element 1 constituting a current control resistance element according to the present invention is obtained by mixing powder of a tellurium material and a carbon material to have an arbitrary shape and an arbitrary high resistance value or low resistance value. 90% to 10% by volume to obtain
Is mixed with 10% to 90% by volume of a carbon material powder, and the mixed powder is press-compressed into an arbitrary shape to be formed. In the embodiment of FIG. 1, the combined resistance element 1 is formed in a cylindrical shape, but may be formed in any shape such as a prismatic shape, an elliptic cylindrical shape, and the like.
【0010】また、別の実施形態においては、テルル素
材の粉体に任意の金属素材の粉体を混合して、低抵抗値
で大電流、抵抗値の変化時間を短縮させることのでき
る。金属素材には、銅、ニッケル、アルミニウム等の粉
体を用いる。金属素材を混合する場合には、任意の抵抗
値と抵抗値の変化時間とを得るために、重量比80%な
いし20%のテルル素材の粉体と、重量比20%ないし
80%の金属粉体を混合して任意の形状にプレス圧縮し
て成形する。In another embodiment, a powder of an arbitrary metal material is mixed with a powder of tellurium material to reduce the resistance, the large current, and the change time of the resistance value. Powder such as copper, nickel, and aluminum is used as the metal material. When a metal material is mixed, a powder of tellurium material having a weight ratio of 80% to 20% and a metal powder having a weight ratio of 20% to 80% are obtained in order to obtain an arbitrary resistance value and a change time of the resistance value. The bodies are mixed and press-compressed into any shape to form.
【0011】図2は、電流制御抵抗素子Aを示し、上記
の合成抵抗素子1は、円筒形のセラミック材からなるホ
ルダー2の内部に配設され、合成抵抗素子1の両端部1
Aには、金属材からなる外部接続端子3が接続され、こ
の外部接続端子3はホルダー2の両端部2Aに固定され
ている。ホルダー2のセラミック材は電気的絶縁材であ
り高温にも耐えるアルミナ酸化シリコン系を使用してい
る。また、外部接続端子3には、電気回路に接続するた
めの接続用ネジ端子3Aを設けている。FIG. 2 shows a current control resistance element A. The composite resistance element 1 is disposed inside a holder 2 made of a cylindrical ceramic material.
A is connected to an external connection terminal 3 made of a metal material, and the external connection terminal 3 is fixed to both ends 2 </ b> A of the holder 2. The ceramic material of the holder 2 is an electrically insulating material and uses an alumina silicon oxide system that can withstand high temperatures. The external connection terminal 3 is provided with a connection screw terminal 3A for connecting to an electric circuit.
【0012】図3に示すように、上記電流制御抵抗素子
Aの両端の接続用ネジ端子3Aに発熱体(抵抗)Rおよ
び交流電源を接続すると、電流制御抵抗素子Aは、図4
に示す電気的特性を有するので、回路に流れる電流によ
り、電流制御抵抗素子Aの内部抵抗が自己発熱によりし
だいに抵抗値が低くなっていく。従って、発熱体Rには
徐々に増加する電流が流れるようになる。この場合、電
流制御抵抗素子Aは、流れる電流に比例して発熱する
が、テルル素材自体の抵抗値が減少していくので、他の
線状抵抗体のように抵抗が赤熱状になることが無い。ま
た、テルル素材自体の発熱が早いので、同一電力の条件
の場合でも、他の線状抵抗体のように高温にはならな
い。As shown in FIG. 3, when a heating element (resistance) R and an AC power supply are connected to the connection screw terminals 3A at both ends of the current control resistance element A, the current control resistance element A
, The current flowing through the circuit causes the internal resistance of the current control resistance element A to gradually decrease in resistance due to self-heating. Therefore, a gradually increasing current flows through the heating element R. In this case, the current control resistance element A generates heat in proportion to the flowing current, but since the resistance value of the tellurium material itself decreases, the resistance becomes reddish like other linear resistors. There is no. In addition, since the tellurium material itself generates heat quickly, it does not reach a high temperature unlike other linear resistors even under the same power condition.
【0013】図5は、本発明の電流制御抵抗素子Aを3
相回路のSCR半導体電力調整器4と3個の発熱体R間
に接続した応用例を示している。このSCR半導体電力
調整器4に接続してある電圧調整抵抗器5の抵抗値を加
減して発熱体Rに加わる出夏を加減するが、この電圧調
整抵抗器5の調整を忘れて発熱体Rに高い電圧を加えて
も、電流制御抵抗素子Aが回路に接続されているため、
SCR半導体電力調整器4の破壊を防止することができ
る。FIG. 5 shows a current control resistor element A according to the present invention.
An application example in which a phase circuit is connected between the SCR semiconductor power regulator 4 and three heating elements R is shown. Although the resistance value of the voltage adjusting resistor 5 connected to the SCR semiconductor power regulator 4 is adjusted to adjust the summer time applied to the heating element R, the adjustment of the voltage adjusting resistor 5 is forgotten and the heating element R is forgotten. Even if a high voltage is applied, since the current control resistance element A is connected to the circuit,
The destruction of the SCR semiconductor power regulator 4 can be prevented.
【0014】以上、本発明の実施の形態について説明し
たが、本発明はこれに限定されるものではなく種々の変
更が可能である。例えば、上記実施形態においては、電
流制御抵抗素子および発熱体を交流回路に接続している
が、直流回路に接続するようにしてもよい。Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications can be made. For example, in the above embodiment, the current control resistance element and the heating element are connected to an AC circuit, but may be connected to a DC circuit.
【0015】[0015]
【発明の効果】以上の説明から明らかなように、本発明
によれば、電圧に関係なく任意の形状で小電流から大電
流、抵抗値の変化時間等を可変でき、また放熱装置を必
要とせず、耐熱450℃程度までの自己温度まで使用す
ることができる。そして、低い抵抗値の発熱体の初期の
過大電流による半導体電力調整器の破壊防止と、変圧器
を使用しないで直接、発熱体を希望電圧に制御すること
ができるAs is apparent from the above description, according to the present invention, a small current to a large current, a change time of a resistance value and the like can be varied in any shape regardless of a voltage, and a heat radiating device is required. Instead, it can be used up to its own temperature of about 450 ° C. Further, it is possible to prevent the semiconductor power regulator from being destroyed due to the initial excessive current of the heating element having a low resistance value, and to directly control the heating element to a desired voltage without using a transformer.
【図1】図1〜図5は、本発明の電流制御抵抗素子の1
実施形態を示し、図1は合成抵抗素子の斜視図である。FIGS. 1 to 5 show one embodiment of a current control resistance element according to the present invention.
FIG. 1 shows an embodiment, and FIG. 1 is a perspective view of a combined resistance element.
【図2】電流制御抵抗素子の平面図である。FIG. 2 is a plan view of a current control resistance element.
【図3】電流制御抵抗素子の電気回路図である。FIG. 3 is an electric circuit diagram of a current control resistance element.
【図4】電流制御抵抗素子の電気的特性を説明するため
の図である。FIG. 4 is a diagram for explaining electrical characteristics of a current control resistance element.
【図5】電流制御抵抗素子の応用例を示す電気回路図で
ある。FIG. 5 is an electric circuit diagram showing an application example of the current control resistance element.
1…合成抵抗素子 2…ホルダー 3…外部接続端子 1: Synthetic resistance element 2: Holder 3: External connection terminal
Claims (2)
部に、体積比90%ないし10%のテルル素材と、体積
比10%ないし90%のカーボン素材とからなる合成抵
抗素子を配設し、該合成抵抗素子の両端部に接続する金
属材からなる外部接続端子を前記ホルダーの両端部に固
定してなることを特徴とする電流制御抵抗素子。1. A synthetic resistance element made of a tellurium material having a volume ratio of 90% to 10% and a carbon material having a volume ratio of 10% to 90% is disposed inside a cylindrical holder made of a ceramic material. An external connection terminal made of a metal material connected to both ends of the combined resistance element is fixed to both ends of the holder.
部に、重量比80%ないし20%のテルル素材と、重量
比20%ないし80%の金属素材とからなる合成抵抗素
子を配設し、該合成抵抗素子の両端部に接続する金属材
からなる外部接続端子を前記ホルダーの両端部に固定し
てなることを特徴とする電流制御抵抗素子。2. A synthetic resistance element made of a tellurium material having a weight ratio of 80% to 20% and a metal material having a weight ratio of 20% to 80% is disposed inside a cylindrical holder made of a ceramic material. An external connection terminal made of a metal material connected to both ends of the combined resistance element is fixed to both ends of the holder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001025073A JP4724838B2 (en) | 2001-02-01 | 2001-02-01 | Current control resistor element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001025073A JP4724838B2 (en) | 2001-02-01 | 2001-02-01 | Current control resistor element |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2002231510A true JP2002231510A (en) | 2002-08-16 |
JP4724838B2 JP4724838B2 (en) | 2011-07-13 |
Family
ID=18890128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2001025073A Expired - Lifetime JP4724838B2 (en) | 2001-02-01 | 2001-02-01 | Current control resistor element |
Country Status (1)
Country | Link |
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JP (1) | JP4724838B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6851290B2 (en) * | 2017-09-05 | 2021-03-31 | 日立Astemo株式会社 | Vibration damping controller |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4874513A (en) * | 1972-01-03 | 1973-10-08 | ||
JPS5212450A (en) * | 1975-07-17 | 1977-01-31 | Marukon Denshi Kk | Method of externally loading voltage nonnlinear resistors |
JPS5658206A (en) * | 1979-10-18 | 1981-05-21 | Matsushita Electric Ind Co Ltd | Fusing type resistor |
JPH05198230A (en) * | 1992-01-21 | 1993-08-06 | Meidensha Corp | Manufacture of electrode material |
-
2001
- 2001-02-01 JP JP2001025073A patent/JP4724838B2/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4874513A (en) * | 1972-01-03 | 1973-10-08 | ||
JPS5212450A (en) * | 1975-07-17 | 1977-01-31 | Marukon Denshi Kk | Method of externally loading voltage nonnlinear resistors |
JPS5658206A (en) * | 1979-10-18 | 1981-05-21 | Matsushita Electric Ind Co Ltd | Fusing type resistor |
JPH05198230A (en) * | 1992-01-21 | 1993-08-06 | Meidensha Corp | Manufacture of electrode material |
Also Published As
Publication number | Publication date |
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JP4724838B2 (en) | 2011-07-13 |
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