JPH0457046U - - Google Patents
Info
- Publication number
- JPH0457046U JPH0457046U JP9601690U JP9601690U JPH0457046U JP H0457046 U JPH0457046 U JP H0457046U JP 9601690 U JP9601690 U JP 9601690U JP 9601690 U JP9601690 U JP 9601690U JP H0457046 U JPH0457046 U JP H0457046U
- Authority
- JP
- Japan
- Prior art keywords
- flame
- flame current
- combustion
- energizing circuit
- change
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 claims 6
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Control Of Combustion (AREA)
Description
第１図および第２図は本考案の一実施例を示し
、第１図は回路図、第２図は炎電流と時間との関
係を示す図である。第３図は従来例を示す回路図
である。
２１……バーナ、２２……電源、２５……検知
用抵抗、２６……ダイオード、２７，２８……保
護用抵抗、２９……フレームロツド、３４……制
御手段、４１……監視用抵抗、４２……開閉スイ
ツチ、４３……第１炎電流判定部、４４……第２
炎電流判定部、４６……トランジスタ、４７……
リレー。
1 and 2 show an embodiment of the present invention, FIG. 1 is a circuit diagram, and FIG. 2 is a diagram showing the relationship between flame current and time. FIG. 3 is a circuit diagram showing a conventional example. 21... Burner, 22... Power supply, 25... Detection resistor, 26... Diode, 27, 28... Protective resistor, 29... Flame rod, 34... Control means, 41... Monitoring resistor, 42 ...Opening/closing switch, 43...First flame current determination section, 44...Second
Flame current determination section, 46...transistor, 47...
relay.
Claims (1)
抗、ダイオード、保護用抵抗の直列回路を介して
接続して形成され、上記バーナの燃焼炎を検知し
て、その燃焼炎の状態に応じて変化する炎電流を
流す炎電流通電回路と、 監視用抵抗およびこれに直列接続された開閉ス
イツチで形成され、上記炎電流通電回路のフレー
ムロツドとダイオードとの間の保護用抵抗に並列
接続された監視回路と、 上記開閉スイツチを所定時間ごとに開閉動作さ
せるスイツチ駆動手段と、 上記炎電流通電回路に流れる炎電流を検知し、
その炎電流が予め設定した所定上限レベルまたは
所定下限レベルを越えた時に燃焼停止出力を発生
する第１炎電流判定部、および上記開閉スイツチ
の開閉による上記所定上下限レベル内での炎電流
の変化を検出し、この変化が予め設定した変化で
ある時は燃焼を継続させるとともに、上記予め設
定した変化が得られない時は燃焼停止出力を発生
する第２炎電流判定部を有した制御手段と を具備した燃焼炎検知装置。[Claims for Utility Model Registration] A flame rod and a burner are connected through a series circuit of a power supply, a detection resistor, a diode, and a protection resistor, and the flame rod detects the combustion flame of the burner and detects the combustion flame. It consists of a flame current energizing circuit that flows a flame current that changes depending on the state of the flame current energizing circuit, a monitoring resistor, and an on/off switch connected in series with the flame current energizing circuit, and a protective resistor between the flame rod and the diode of the flame current energizing circuit. a monitoring circuit connected in parallel; a switch driving means for opening and closing the on-off switch at predetermined time intervals; detecting the flame current flowing through the flame current energizing circuit;
a first flame current determining section that generates a combustion stop output when the flame current exceeds a predetermined upper limit level or a predetermined lower limit level; and a change in the flame current within the predetermined upper and lower limit levels by opening and closing the above-mentioned on/off switch. a control means having a second flame current determining section that detects the change in flame current and causes combustion to continue when the change is a preset change, and generates a combustion stop output when the preset change is not obtained; Combustion flame detection device equipped with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9601690U JPH0457046U (en) | 1990-09-14 | 1990-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9601690U JPH0457046U (en) | 1990-09-14 | 1990-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0457046U true JPH0457046U (en) | 1992-05-15 |
Family
ID=31835218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9601690U Pending JPH0457046U (en) | 1990-09-14 | 1990-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0457046U (en) |
-
1990
- 1990-09-14 JP JP9601690U patent/JPH0457046U/ja active Pending
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