JPS55150425A - Combustion control circuit - Google Patents
Combustion control circuitInfo
- Publication number
- JPS55150425A JPS55150425A JP5573979A JP5573979A JPS55150425A JP S55150425 A JPS55150425 A JP S55150425A JP 5573979 A JP5573979 A JP 5573979A JP 5573979 A JP5573979 A JP 5573979A JP S55150425 A JPS55150425 A JP S55150425A
- Authority
- JP
- Japan
- Prior art keywords
- output
- become
- timing
- frequency divider
- frequency
- 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
Landscapes
- Control Of Combustion (AREA)
Abstract
PURPOSE: To improve the safety and reliablilty of a combustor by operating an alarm circuit when detecting the repetition of ignition and flame extinguishment during predetermined times at the fire signal while a thermo signal for detecting the temperature of the load is continuously operating.
CONSTITUTION: When a thermo signal 5 becomes "1" at the initiation of an opera- tion, a blower output becomes on, and a prepurge frequency divider circuit 2 starts dividing the frequency. When the period of the reference clock 1 is represented by T, the output 27 of the frequency divider is converted from "0" to "1" at a timing of T×4, so that both the fuel supply device output 24 and an ignition device output 23 become on through gates 28, 29, respectively. At this time a waveform of a clock 1 is applied from a gate 30 into a safety timer frequency divider 3, which starts dividing the frequency. Its output becomes from "0" to "1" at a timing of T×2. If a fire signal 6 does not become "1" within this timing, an RS flip-flop 17 is inverted to allow the alarm output 19 to become "on" while the outputs 22W24 become "off".
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5573979A JPS55150425A (en) | 1979-05-09 | 1979-05-09 | Combustion control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5573979A JPS55150425A (en) | 1979-05-09 | 1979-05-09 | Combustion control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55150425A true JPS55150425A (en) | 1980-11-22 |
Family
ID=13007216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5573979A Pending JPS55150425A (en) | 1979-05-09 | 1979-05-09 | Combustion control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55150425A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57124615A (en) * | 1981-01-26 | 1982-08-03 | Yamatake Honeywell Co Ltd | Digital combustion controlling apparatus |
| JPS5929921A (en) * | 1982-08-10 | 1984-02-17 | Yamatake Honeywell Co Ltd | Combustion safety controller |
| JPS5934294U (en) * | 1982-04-27 | 1984-03-02 | 株式会社クボタ | grain dryer |
| JPS6066957U (en) * | 1983-10-13 | 1985-05-13 | 株式会社山武 | Combustion safety device for gas water heaters |
-
1979
- 1979-05-09 JP JP5573979A patent/JPS55150425A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57124615A (en) * | 1981-01-26 | 1982-08-03 | Yamatake Honeywell Co Ltd | Digital combustion controlling apparatus |
| JPH0159496B2 (en) * | 1981-01-26 | 1989-12-18 | Yamatake Honeywell Co Ltd | |
| JPS5934294U (en) * | 1982-04-27 | 1984-03-02 | 株式会社クボタ | grain dryer |
| JPS6122237Y2 (en) * | 1982-04-27 | 1986-07-03 | ||
| JPS5929921A (en) * | 1982-08-10 | 1984-02-17 | Yamatake Honeywell Co Ltd | Combustion safety controller |
| JPS6066957U (en) * | 1983-10-13 | 1985-05-13 | 株式会社山武 | Combustion safety device for gas water heaters |
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