JPH0150807B2 - - Google Patents
Info
- Publication number
- JPH0150807B2 JPH0150807B2 JP59139904A JP13990484A JPH0150807B2 JP H0150807 B2 JPH0150807 B2 JP H0150807B2 JP 59139904 A JP59139904 A JP 59139904A JP 13990484 A JP13990484 A JP 13990484A JP H0150807 B2 JPH0150807 B2 JP H0150807B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- burner
- constant
- flame rod
- combustion amount
- 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.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/003—Systems for controlling combustion using detectors sensitive to combustion gas properties
- F23N5/006—Systems for controlling combustion using detectors sensitive to combustion gas properties the detector being sensitive to oxygen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N5/00—Systems for controlling combustion
- F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
- F23N5/12—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods
- F23N5/123—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using ionisation-sensitive elements, i.e. flame rods using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2237/00—Controlling
- F23N2237/02—Controlling two or more burners
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Combustion (AREA)
Description
【発明の詳細な説明】
本発明は複数のバーナを有し、酸素欠乏状態を
可変燃焼量範囲全域に於いて、フレームロツドを
用いて一定の判定レベルで一定酸素濃度時に燃焼
を遮断する酸素欠乏防止装置を有する燃焼装置を
提供することを目的としたものである。Detailed Description of the Invention The present invention has a plurality of burners, and uses a flame rod to prevent oxygen deficiency by cutting off combustion at a constant oxygen concentration at a certain judgment level in the entire range of variable combustion amount. The object of the present invention is to provide a combustion apparatus having a combustion apparatus.
従来、フレームロツドを使用した酸素欠乏防止
装置を有する燃焼装置は、複数のバーナが機器本
体及びバーナ相互間で電気的に同電位にあつた
為、フレームロツドを取付けたバーナを一定燃焼
量としても、可変燃焼量バーナ側の火炎の干渉を
受けフレームロツド検知電流が一定でなかつた。
またフレームロツド取付けバーナのみを機器本体
から電気的に絶縁しても可変燃焼量バーナ側の火
炎を介し電源−トランス−検知回路へと漏れ電流
が流れていた為、一定したフレームロツド検知電
流を得ることが出来ず一定の判定レベルで一定酸
素濃度時に燃焼を遮断することが出来なかつた。 Conventionally, in combustion equipment equipped with an oxygen deficiency prevention device using flame rods, multiple burners were electrically at the same potential between the equipment body and each other. The flame rod detection current was not constant due to interference from the flame on the burner side.
Furthermore, even if only the flame rod-mounted burner was electrically insulated from the main body of the equipment, leakage current would flow through the flame on the variable combustion rate burner side to the power supply, transformer, and detection circuit, making it impossible to obtain a constant flame rod detection current. It was not possible to shut off combustion at a certain oxygen concentration at a certain judgment level.
以下本発明の一実施例を図面を用いて説明す
る。第１図は従来例を２本のバーナを用いた燃焼
装置で示している。図に示す様に燃焼遮断装置
（例えば電磁弁）１を介して一定燃焼量を得る為
のガバナ２が一定燃焼量バーナ３に連絡してい
る。また可変燃焼を行うためのスライドガバナ
（電磁弁等）４は可変燃焼量バーナ５に連絡して
いる。一定燃焼量バーナ３の上方にはフレームロ
ツド６が設置されており前記フレームロツド６と
一定燃焼量バーナ３及び可変燃焼量バーナ５には
トランス７により交流電圧が印加されている。一
定燃焼量バーナ３及び可変燃焼量バーナ５は機器
本体と同電位となつている。８はフレームロツド
電流を検知し燃焼遮断装置１をコントロールする
制御回路部である。燃焼炎９，１０中には電離し
たマイナスイオンが発生している。フレームロ
ツド６がプラスになつた時マイナスイオンはバ
ーナよりフレームロツド６に移動する。従つて電
流はフレームロツド６よりバーナ３，５に流れ
る。この時フレームロツド６には火炎９，１０が
干渉していると一定燃焼量バーナ３のみのマイナ
スイオンだけでなく可変燃焼量バーナ５のマイ
ナスイオンも移動し、かつ可変燃焼量バーナ５
の燃焼量によりマイナスイオンが増減する為一
定したフレームロツド電流が得られない。この関
係をグラフにしたものが第２図である。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a conventional combustion apparatus using two burners. As shown in the figure, a governor 2 for obtaining a constant combustion rate is connected to a constant combustion rate burner 3 via a combustion cutoff device (for example, a solenoid valve) 1. Further, a slide governor (such as a solenoid valve) 4 for performing variable combustion is connected to a variable combustion amount burner 5. A flame rod 6 is installed above the constant combustion amount burner 3, and an alternating current voltage is applied to the flame rod 6, the constant combustion amount burner 3, and the variable combustion amount burner 5 by a transformer 7. The constant combustion amount burner 3 and the variable combustion amount burner 5 are at the same potential as the main body of the device. Reference numeral 8 denotes a control circuit section that detects the flame rod current and controls the combustion cutoff device 1. Ionized negative ions are generated in the combustion flames 9 and 10. When the flame rod 6 becomes positive, negative ions move from the burner to the flame rod 6. Current therefore flows from the flame rod 6 to the burners 3,5. At this time, if the flames 9 and 10 interfere with the flame rod 6, not only the negative ions of the constant combustion amount burner 3 but also the negative ions of the variable combustion amount burner 5 move, and the negative ions of the variable combustion amount burner 5 also move.
Because the amount of negative ions increases or decreases depending on the amount of combustion, a constant flame rod current cannot be obtained. Figure 2 is a graph of this relationship.
第２図ａは可変燃焼量バーナの燃焼量が最大の
時、ｂは最小の時のフレームロツド検知電流と酸
素濃度との関係を示したものである。ここで仮に
フレーム電流判定レベル〔If〕〓に定めると燃焼遮
断の範囲は〔O2〕〓から〔O2〕〓までとなり一定の
酸素濃度では遮断出来なくなる。〔O2〕Oは酸素欠
乏状態前（一般大気中）の酸素濃度である。 FIG. 2a shows the relationship between the flame rod detection current and the oxygen concentration when the combustion amount of the variable combustion amount burner is the maximum, and FIG. 2b shows the relationship between the flame rod detection current and the oxygen concentration when the combustion amount is the minimum. Here, if the flame current judgment level [If] is set, the range of combustion shutdown will be from [O 2 ] to [O 2 ], and it will not be possible to shut off at a certain oxygen concentration. [O 2 ] O is the oxygen concentration before an oxygen-deficient state (in the general atmosphere).
第３図は一定燃焼量バーナ３のみを機器本体か
ら絶縁した従来の燃焼装置である。一定燃焼量バ
ーナ３は碍子等の絶縁物１１により機器本体から
絶縁されており前記の従来例（第１図）に比べ可
変燃焼量バーナ５の影響は小さくなつているが火
炎９，１０が干渉すると可変燃焼量バーナ５とト
ランス７の１次側（電源側）とが同電位の為、ト
ランスの１次と２次の絶縁が完全でないと波線で
示す如く漏れ電流が発生し従つて可変燃焼量バー
ナ５の燃焼量によりフレームロツド検知電流の増
減が見られる。 FIG. 3 shows a conventional combustion device in which only a constant combustion amount burner 3 is insulated from the main body of the device. The constant combustion amount burner 3 is insulated from the main body of the device by an insulator 11 such as an insulator, and the influence of the variable combustion amount burner 5 is smaller compared to the conventional example (Fig. 1), but the flames 9 and 10 interfere. Then, since the variable combustion amount burner 5 and the primary side (power supply side) of the transformer 7 are at the same potential, if the insulation between the primary and secondary sides of the transformer is not perfect, leakage current will occur as shown by the dotted line, resulting in variable combustion. The flame rod detection current increases and decreases depending on the combustion amount of the burner 5.
第４図は本発明の一実施例を示したもので可変
燃焼量バーナ５も絶縁物１２により機器本体から
及び一定燃焼量バーナ３から電気的に絶縁されて
いる。ここで火炎９，１０が干渉しても可変燃焼
量バーナ５の火炎１０に発生するマイナスイオン
は完全に絶縁されている為一定燃焼量バーナ３
への機器本体へも移動しない。従つてフレームロ
ツド６の検知する電流は一定燃焼量バーナ３のみ
の燃焼によつて決まりすなわち一定したものとな
る。この関係を示したグラフが第５図である。図
よりフレームロツド検知電流と酸素濃度の関係は
可変燃焼量バーナの影響を受けない為１本の曲線
として現われる。従つて任意の酸素濃度に対して
一定の判定レベルで設定出来る。第６図は本発明
の具体例を示す図で１３は一定燃焼量バーナ、１
４は燃焼量可変バーナ、１５はフレームロツド、
１６，１７は各々碍子等による絶縁物である。こ
のように本発明によれば複数のバーナを有する燃
焼装置に於いて燃焼量可変範囲全域で一定の判定
レベルで一定酸素濃度時に燃焼遮断装置を作動さ
せることが出来る為、より完全な燃焼装置を提供
することが可能となつた。 FIG. 4 shows an embodiment of the present invention, in which the variable combustion rate burner 5 is also electrically insulated from the main body of the device and from the constant combustion rate burner 3 by an insulator 12. Here, even if the flames 9 and 10 interfere, the negative ions generated in the flame 10 of the variable combustion amount burner 5 are completely insulated, so the constant combustion amount burner 3
It does not move to the main body of the device. Therefore, the current detected by the flame rod 6 is determined by the combustion of only the constant combustion amount burner 3, that is, it becomes constant. A graph showing this relationship is shown in FIG. From the figure, the relationship between flame rod detection current and oxygen concentration appears as a single curve because it is not affected by the variable combustion amount burner. Therefore, it is possible to set a constant judgment level for any oxygen concentration. FIG. 6 is a diagram showing a specific example of the present invention, in which 13 is a constant combustion amount burner;
4 is a variable combustion amount burner, 15 is a flame rod,
16 and 17 are insulators such as insulators. As described above, according to the present invention, in a combustion device having a plurality of burners, the combustion cutoff device can be activated at a constant oxygen concentration at a constant judgment level throughout the combustion amount variable range, so that a more complete combustion device can be realized. It became possible to provide
第１図、第３図は従来例のブロツク図、第２図
は従来例のフレームロツド検知電流と酸素濃度と
の関係を示す図、第４図は本発明の一実施例にお
ける燃焼装置のブロツク図、第５図は本発明のフ
レームロツド検知電流と酸素濃度との関係を示す
図、第６図は本発明の具体例を示す斜視図であ
る。
１……燃焼遮断装置、３……一定燃焼量バー
ナ、５……可変燃焼量バーナ、６……フレームロ
ツド、８……制御回路。
1 and 3 are block diagrams of the conventional example, FIG. 2 is a diagram showing the relationship between flame rod detection current and oxygen concentration in the conventional example, and FIG. 4 is a block diagram of a combustion device in an embodiment of the present invention. 5 is a diagram showing the relationship between flame rod detection current and oxygen concentration according to the present invention, and FIG. 6 is a perspective view showing a specific example of the present invention. DESCRIPTION OF SYMBOLS 1... Combustion cutoff device, 3... Constant combustion amount burner, 5... Variable combustion amount burner, 6... Flame rod, 8... Control circuit.
Claims (1)
との間及びバーナ相互間を電気的に絶縁し、任意
のバーナにフレームロツドを取付けた燃焼装置。 ２ 複数のバーナのうち１本を一定燃焼量バーナ
としそのバーナにフレームロツドを取付けた特許
請求の範囲第１項記載の燃焼装置。 ３ 複数のバーナのうちフレームロツドを取付け
た一定燃焼量バーナ以外のバーナを燃焼量可変と
した特許請求の範囲第１項記載の燃焼装置。[Scope of Claims] 1. A combustion device having a plurality of burners, electrically insulating between the burners and the main body of the device and between the burners, and attaching a flame rod to any burner. 2. The combustion device according to claim 1, wherein one of the plurality of burners is a constant combustion amount burner and a flame rod is attached to the burner. 3. The combustion apparatus according to claim 1, wherein among the plurality of burners, burners other than the constant combustion amount burner to which a flame rod is attached have variable combustion amounts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59139904A JPS6042512A (en) | 1984-07-05 | 1984-07-05 | combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59139904A JPS6042512A (en) | 1984-07-05 | 1984-07-05 | combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6042512A JPS6042512A (en) | 1985-03-06 |
| JPH0150807B2 true JPH0150807B2 (en) | 1989-10-31 |
Family
ID=15256328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59139904A Granted JPS6042512A (en) | 1984-07-05 | 1984-07-05 | combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6042512A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19912076A1 (en) * | 1999-03-18 | 2000-09-21 | Kromschroeder Ag G | Premix burner for gaseous fuels |
| EP3640540B1 (en) * | 2018-10-16 | 2021-04-21 | Orkli, S. Coop. | Cooking appliance |
-
1984
- 1984-07-05 JP JP59139904A patent/JPS6042512A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6042512A (en) | 1985-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2112736A (en) | Flame detector | |
| EP0071174B1 (en) | Burner ignition and flame monitoring system | |
| GB1143210A (en) | Improvements in ignition and fuel control systems | |
| GB2117951A (en) | Method using the rectifying effect of a flame for detecting the operation of a burner and device for carrying out the method | |
| US2640920A (en) | Safety fuel burner control system utilizing flame conduction | |
| JPH0150807B2 (en) | ||
| US4372346A (en) | Electrical warp thread-monitoring apparatus for a loom | |
| US2361294A (en) | Control system | |
| JPS6133400Y2 (en) | ||
| JPS556130A (en) | Enclosed burner | |
| JPS57108519A (en) | Combustion apparatus | |
| JPS625551Y2 (en) | ||
| KR100341090B1 (en) | Safety device of gas radiation burner | |
| GB1105791A (en) | Stabilised voltage supply | |
| JPS5680373A (en) | Controlling device for arc welding machine | |
| US20020132204A1 (en) | Electric gas lighter | |
| ES480048A1 (en) | Gas appliance with multiple burners - each having electrical ignition system operated by gas supply tap which closes HV switch first | |
| JPH0229932B2 (en) | KAENDENRYUKENSHUTSUSOCHI | |
| GB1046967A (en) | Improvements in or relating to ignition devices for gas burners | |
| JPS6226688Y2 (en) | ||
| US2476790A (en) | Control circuit for gas tubes | |
| JPH0226133B2 (en) | ||
| JPS5880421A (en) | Combustion stabilizing device in full primary air type combustion apparatus | |
| FR2439361A1 (en) | Control system for fuel burner with flame detector - has external ignition system with spark plug operating on transformer with safety delay | |
| JPS6488025A (en) | Premixing flame control type gas burner |