JPH0333991U - - Google Patents
Info
- Publication number
- JPH0333991U JPH0333991U JP9460889U JP9460889U JPH0333991U JP H0333991 U JPH0333991 U JP H0333991U JP 9460889 U JP9460889 U JP 9460889U JP 9460889 U JP9460889 U JP 9460889U JP H0333991 U JPH0333991 U JP H0333991U
- Authority
- JP
- Japan
- Prior art keywords
- output
- voltage regulator
- comparison
- circuit
- detects
- 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
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- General Induction Heating (AREA)
Description
第１図は本考案の一実施例による加熱温度保持
制御装置を示すブロツク図、第２図は第１図と制
御装置による動作を説明するための保持温度と電
圧調整器出力の時間の経過による変化を示すグラ
フ、第３図は従来の加熱温度保持制御装置を示す
ブロツク図である。
１……電源、２……主回路開閉器、３……電圧
調整器、４……誘導加熱炉、５……誘導コイル、
６……温度センサー、７……温度調節計、８……
タイムリレー、９……力率改善コンデンサ、１０
……電圧調整器、１１……出力検出回路、１２…
…温度調節計、１３……比較判定回路、１４……
出力増加回路、１５……出力減少回路。
Fig. 1 is a block diagram showing a heating temperature maintenance control device according to an embodiment of the present invention, and Fig. 2 is a diagram showing the holding temperature and voltage regulator output over time to explain the operation of the control device as shown in Fig. 1. A graph showing the changes, and FIG. 3 is a block diagram showing a conventional heating temperature maintenance control device. 1...Power source, 2...Main circuit switch, 3...Voltage regulator, 4...Induction heating furnace, 5...Induction coil,
6... Temperature sensor, 7... Temperature controller, 8...
Time relay, 9... Power factor correction capacitor, 10
... Voltage regulator, 11 ... Output detection circuit, 12 ...
...Temperature controller, 13... Comparison/judgment circuit, 14...
Output increase circuit, 15... Output decrease circuit.
Claims (1)
と、この電圧調整器の上下限出力を検知する出力
検出回路と、温度センサーに接続され被加熱材の
上下限温度を検知する温度調節計と、前記出力検
出回路と温度調節計との検知信号を組合せて比較
判定する比較判定回路と、この比較判定回路に接
続されその信号に基づいて電圧調整器の出力を所
定の幅で制御する出力増加および出力減少回路と
から成ることを特徴とする誘導加熱炉の加熱温度
保持制御装置。 A voltage regulator provided with limit circuits in two positions, upper and lower, an output detection circuit that detects the upper and lower limit outputs of the voltage regulator, and a temperature controller that is connected to a temperature sensor and detects the upper and lower limit temperatures of the heated material, a comparison/judgment circuit that combines detection signals from the output detection circuit and the temperature controller to make a comparison; and an output increaser that is connected to the comparison/judgment circuit and controls the output of the voltage regulator within a predetermined range based on the signal. 1. A heating temperature maintenance control device for an induction heating furnace, comprising an output reduction circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9460889U JPH0333991U (en) | 1989-08-12 | 1989-08-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9460889U JPH0333991U (en) | 1989-08-12 | 1989-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0333991U true JPH0333991U (en) | 1991-04-03 |
Family
ID=31643930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9460889U Pending JPH0333991U (en) | 1989-08-12 | 1989-08-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333991U (en) |
-
1989
- 1989-08-12 JP JP9460889U patent/JPH0333991U/ja active Pending
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