JPS6329881U - - Google Patents
Info
- Publication number
- JPS6329881U JPS6329881U JP12325686U JP12325686U JPS6329881U JP S6329881 U JPS6329881 U JP S6329881U JP 12325686 U JP12325686 U JP 12325686U JP 12325686 U JP12325686 U JP 12325686U JP S6329881 U JPS6329881 U JP S6329881U
- Authority
- JP
- Japan
- Prior art keywords
- heating
- temperature
- circuit
- signal
- elapsed
- 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
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Description
第１図は本考案の一実施例を示す加熱器の構成
ブロツク図、第２図は同空焚き検知回路図、第３
図は同駆動回路図、第４図は同制御タイムチヤー
ト、第５図は弱加熱時における空焚きの場合の鍋
の温度と温度検知素子（サーミスタ）の温度との
関係を示す図、第６図は弱加熱時における鍋に水
が入つている場合の鍋の温度と温度検知素子（サ
ーミスタ）の温度との関係を示す図、第７図は再
加熱時における鍋に水が入つている場合の鍋の温
度と温度検知素子（サーミスタ）の温度との関係
を示す図、第８図は再加熱時における空焚きの場
合の鍋の温度と温度検知素子（サーミスタ）の温
度との関係を示す図、第９図は従来の加熱器の構
成ブロツク図である。
１：被加熱物、２：トツププレート、３Ａ：加
熱コイル、３：加熱手段、４：温度検知素子（サ
ーミスタ）、５：制御回路、６：整流平滑回路、
６Ａ：平滑コンデンサ、６Ｂ：整流回路、７：イ
ンバータ回路、９：温度検知回路、１１：駆動回
路、１２：温度勾配演算手段、１３：比較回路、
１４：タイマー回路、１７：発振回路、１８：出
力調整電圧発生回路、１９：出力調整回路、Ｃ：
共振コンデンサ、ＴＲ１：スイツチング素子。
Fig. 1 is a block diagram of a heater showing an embodiment of the present invention, Fig. 2 is an empty heating detection circuit diagram, and Fig. 3
Fig. 4 is the same control time chart, Fig. 5 is a diagram showing the relationship between the temperature of the pot and the temperature of the temperature detection element (thermistor) in the case of dry firing during low heating, and Fig. 6 is the same drive circuit diagram. The figure shows the relationship between the temperature of the pot and the temperature of the temperature detection element (thermistor) when there is water in the pot during low heating, and Figure 7 shows the relationship between the temperature of the pot and the temperature of the temperature detection element (thermistor) when there is water in the pot during reheating. Figure 8 shows the relationship between the temperature of the pot and the temperature of the temperature detection element (thermistor) in the case of dry cooking during reheating. 9 are block diagrams of a conventional heater. 1: Heated object, 2: Top plate, 3A: Heating coil, 3: Heating means, 4: Temperature sensing element (thermistor), 5: Control circuit, 6: Rectifying and smoothing circuit,
6A: smoothing capacitor, 6B: rectifier circuit, 7: inverter circuit, 9: temperature detection circuit, 11: drive circuit, 12: temperature gradient calculation means, 13: comparison circuit,
14: Timer circuit, 17: Oscillation circuit, 18: Output adjustment voltage generation circuit, 19: Output adjustment circuit, C:
Resonant capacitor, TR1: switching element.
Claims (1)
手段を加熱開始時に弱加熱に、また加熱開始から
所定時間経過後に強加熱に切替えるための駆動回
路と、該駆動回路に加熱開始時から第一時間経過
後に空焚き検知開始信号を出力し第二時間経過後
に強加熱切替信号を出力するタイマー回路と、前
記被加熱物の温度を検出する温度検知回路と、該
温度検知回路の温度信号に基いて加熱時の温度上
昇勾配を演算する温度勾配演算手段と、該温度勾
配演算手段の出力温度上昇値が空焚き基準値より
も小のとき前記駆動回路にＯＮ信号を出力し空焚
き基準値よりも大のとき前記駆動回路にＯＦＦ信
号を出力する比較回路とから構成されたことを特
徴とする加熱器。 A heating means for heating an object to be heated; a drive circuit for switching the heating means to low heating at the start of heating and to strong heating after a predetermined time has elapsed from the start of heating; A timer circuit that outputs a dry heating detection start signal after one hour has elapsed and a strong heating switching signal after a second time has elapsed, a temperature detection circuit that detects the temperature of the object to be heated, and a temperature signal of the temperature detection circuit. temperature gradient calculation means for calculating a temperature rise gradient during heating based on the temperature gradient calculation means; and when the output temperature rise value of the temperature gradient calculation means is smaller than the dry heating reference value, an ON signal is output to the drive circuit to set the dry heating reference value. and a comparison circuit that outputs an OFF signal to the drive circuit when the value is greater than .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12325686U JPH0622955Y2 (en) | 1986-08-11 | 1986-08-11 | Heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12325686U JPH0622955Y2 (en) | 1986-08-11 | 1986-08-11 | Heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6329881U true JPS6329881U (en) | 1988-02-26 |
| JPH0622955Y2 JPH0622955Y2 (en) | 1994-06-15 |
Family
ID=31014194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12325686U Expired - Lifetime JPH0622955Y2 (en) | 1986-08-11 | 1986-08-11 | Heater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622955Y2 (en) |
-
1986
- 1986-08-11 JP JP12325686U patent/JPH0622955Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622955Y2 (en) | 1994-06-15 |
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