JPS6146731B2 - - Google Patents
Info
- Publication number
- JPS6146731B2 JPS6146731B2 JP57100860A JP10086082A JPS6146731B2 JP S6146731 B2 JPS6146731 B2 JP S6146731B2 JP 57100860 A JP57100860 A JP 57100860A JP 10086082 A JP10086082 A JP 10086082A JP S6146731 B2 JPS6146731 B2 JP S6146731B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- oxygen concentration
- gas
- burner
- air
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 68
- 239000007789 gas Substances 0.000 claims description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 9
- 229910006404 SnO 2 Inorganic materials 0.000 description 8
- 229910010413 TiO 2 Inorganic materials 0.000 description 7
- 230000007423 decrease Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000567 combustion gas Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F23N2227/00—Ignition or checking
- F23N2227/36—Spark ignition, e.g. by means of a high voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2235/00—Valves, nozzles or pumps
- F23N2235/12—Fuel valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Description
【発明の詳細な説明】
本発明は燃焼機器に関するもので、特に室内開
放型の燃焼器具の安全性とクリーン性に関する分
野に属するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to combustion equipment, and particularly to the field of safety and cleanliness of indoor open combustion equipment.
室内開放型の燃焼器具、特に長時間使用するス
トーブ等の暖房器具では燃焼排気ガス中のNOx
（窒素酸化物）の少ないシユバンクバーナ等の予
混合表面燃焼バーナを用いることが多い。 NOx in the combustion exhaust gas from indoor open combustion appliances, especially heating appliances such as stoves that are used for a long time.
Premixed surface-combustion burners such as shubunk burners with low levels of nitrogen oxides are often used.
さらに、開放型燃焼器具では室内酸素濃度が低
下したときや、１次空気口が詰つたときに不完全
燃焼状態を検出し燃焼を停止する安全装置が要望
されており、火炎のイオン電流を検出する方法、
ZrO2、TiO2、SnO2といつた酸素濃度センサを用
いる方法等が提案されている。 Furthermore, in open combustion appliances, there is a need for a safety device that detects incomplete combustion and stops combustion when the indoor oxygen concentration drops or when the primary air vent becomes clogged, and detects the ionic current of the flame. how to,
Methods using oxygen concentration sensors such as ZrO 2 , TiO 2 , and SnO 2 have been proposed.
しかしながら、低NOx燃焼である予混合表面
燃焼では火炎がほとんどないためイオン電流が非
常に小さくてイオン電流を検出し不完全燃焼状態
を検出するのは困難であつた。従つて、予混合表
面燃焼ではZrO2、SnO2等の酸素濃度センサを用
いるケースが多いが、予混合表面燃焼バーナは室
内酸素濃度低下時や１次空気口詰り時に燃焼性が
悪化しやすいので燃焼面に２次空気が供給される
構成をとつて特性の向上を図つている。この場
合、２次空気がある為にセンサ雰囲気の酸素濃度
により特性の変化する点と燃焼が悪化する点が完
全には一致しないという欠点を有していた。さら
にこれら酸素濃度センサは酸素濃度以外にもCO
等の還元ガスによつても特性が変化するので、ガ
ス供給圧が異常に低下したとき高過剰となりCO
が発生し、COの影響を受けて、確実に燃焼を停
止出来難い欠点があつた。 However, in premixed surface combustion, which is low NOx combustion, there is almost no flame, so the ion current is very small, making it difficult to detect the ion current and detect incomplete combustion. Therefore, in premixed surface combustion, oxygen concentration sensors such as ZrO 2 or SnO 2 are often used, but the combustibility of premixed surface combustion burners tends to deteriorate when the indoor oxygen concentration decreases or when the primary air port is clogged. The characteristics are improved by using a configuration in which secondary air is supplied to the combustion surface. In this case, since there is secondary air, there is a drawback that the point where the characteristics change depending on the oxygen concentration in the sensor atmosphere and the point where combustion deteriorates do not completely match. In addition to oxygen concentration, these oxygen concentration sensors also measure CO2 concentration.
The characteristics also change depending on the reducing gas such as, so when the gas supply pressure drops abnormally, the CO
The problem was that it was difficult to stop combustion reliably due to the influence of CO.
本発明は、予混合表面燃焼を用いた温風暖房器
具において、SnO2、TiO2等の酸素センサとガス
供給圧検出手段を用いたもので、異常ガス圧低下
時をも検出してその安全性を一層高めんとするも
のである。 The present invention uses an oxygen sensor such as SnO 2 or TiO 2 and gas supply pressure detection means in a hot air heating appliance using premixed surface combustion, and detects abnormal gas pressure drops to ensure safety. The aim is to further enhance sexuality.
本発明は、燃焼に必要な空気と燃焼ガスを全て
予混合させ表面燃焼を行う温風暖房装置に関し
て、燃焼室は燃焼面に２次空気の流入を防止した
密閉状の構成とし、燃焼面近傍にSnO2、TiO2等
の酸素濃度センサを設けると共に、器具へのガス
供給圧を検出し不完全燃焼状態を確実に検出する
ものである。 The present invention relates to a hot air heating device that premixes all the air and combustion gas necessary for combustion and performs surface combustion.The combustion chamber has a sealed structure that prevents secondary air from flowing into the combustion surface, and In addition to installing an oxygen concentration sensor such as SnO 2 or TiO 2 , the gas supply pressure to the appliance is detected to reliably detect incomplete combustion.
以下、本発明の一実施例について第１図、第２
図に基づいて説明する。 Hereinafter, one embodiment of the present invention will be explained in Figs. 1 and 2.
This will be explained based on the diagram.
第１図は本発明の燃焼装置の一実施例の温風暖
房装置の原理を示す側断面図である。 FIG. 1 is a side sectional view showing the principle of a hot air heating device which is an embodiment of the combustion device of the present invention.
図中１は温風暖房装置のケーシング、２はバー
ナであり、ガスノズル３と対向して設けられた１
次空気口４、混合管５、混合気室６、燃焼筒７の
内側に金網で構成された炎口部８、金属板で形成
された燃焼筒７の外筒９、２次空気の流入を防止
する密閉状構成とした燃焼室１０で構成されてい
る。１１は燃焼室１０後部に設けた燃焼ガス通路
である。 In the figure, 1 is the casing of the hot air heating device, 2 is the burner, and 1 is installed facing the gas nozzle 3.
The secondary air port 4, the mixing pipe 5, the mixture chamber 6, the flame port part 8 made of wire mesh on the inside of the combustion tube 7, and the outer tube 9 of the combustion tube 7 made of a metal plate, which allow the inflow of secondary air. It is composed of a combustion chamber 10 having a sealed configuration to prevent 11 is a combustion gas passage provided at the rear of the combustion chamber 10.
送風機１２によつて、給気口１３から吸引され
た空気はガイド板１４によつて燃焼ガスを吸引し
燃焼筒７の外周の温風通路を経て、温風吹出口１
６から送風される。 The air sucked from the air supply port 13 by the blower 12 sucks combustion gas through the guide plate 14, passes through the hot air passage around the outer periphery of the combustion tube 7, and then reaches the hot air outlet 1.
Air is blown from 6.
１７は第１ガス弁、１８はガスガバナー、１９
は第２ガス弁である。２０は制御回路であり、点
火プラグ２１から放電着火し、SnO2、TiO2等の
酸素濃度センサからなる燃焼検知素子２２の出力
と、ガス圧力検出手段２３の出力を検出して燃焼
を制御するものである。 17 is a first gas valve, 18 is a gas governor, 19
is the second gas valve. Reference numeral 20 denotes a control circuit which ignites by discharge from the spark plug 21 and controls combustion by detecting the output of the combustion detection element 22 consisting of an oxygen concentration sensor such as SnO 2 or TiO 2 and the output of the gas pressure detection means 23. It is something.
上記構成において、ガスノズル３から噴出した
ガスは燃焼に必要な空気を１次空気口から吸引し
混合管５、混合気室６を経て２次空気の流入を防
止した密閉状構成の燃焼室１０で表面燃焼を行
う。 In the above configuration, the gas ejected from the gas nozzle 3 sucks the air necessary for combustion from the primary air port, passes through the mixing pipe 5 and the mixture chamber 6, and enters the combustion chamber 10, which has a closed configuration that prevents the inflow of secondary air. Perform surface combustion.
SnO2、TiO2等からなる酸素濃度を検出する燃
焼知素子２２は燃焼室面近傍に設けられている。 A combustion sensing element 22 made of SnO 2 , TiO 2 or the like and detecting the oxygen concentration is provided near the surface of the combustion chamber.
第２図はガス供給１次圧と燃焼検知素子２２の
抵抗特性の関係を示し、曲線Ａ，Ｂは燃焼検知素
子２２のサーミスター特性のバラツキ範囲を示
す。ガス供給圧P1〜P2は設定燃焼範囲を示し、燃
焼検知素子２２の雰囲気温度とガス供給圧とは一
定の関係にある。 FIG. 2 shows the relationship between the primary gas supply pressure and the resistance characteristics of the combustion sensing element 22, and curves A and B show the range of variation in the thermistor characteristics of the combustion sensing element 22. The gas supply pressures P 1 to P 2 indicate a set combustion range, and the atmospheric temperature of the combustion detection element 22 and the gas supply pressure have a constant relationship.
R1、R2は燃焼状態を検出し燃焼を制御する値
で温度が下れば抵抗値はR1以上となり、立ち消
えを検出するもので、雰囲気酸素濃度の低下や、
１次空気口詰りによる１次空気不足で燃焼排ガス
中に残存酸素量がほとんどない状態になると抵抗
値はR2以下になり不完全燃焼状態を検出するも
のである。 R 1 and R 2 are values that detect the combustion state and control combustion. If the temperature drops, the resistance value becomes R 1 or more, and it is used to detect the extinction, which is caused by a decrease in the atmospheric oxygen concentration,
When there is almost no residual oxygen in the combustion exhaust gas due to a primary air shortage due to primary air port clogging, the resistance value becomes less than R 2 and an incomplete combustion state is detected.
本実施例では、燃焼に必要な空気は全て１次空
気によつて行われているので燃焼排ガス中の酸素
濃度と燃焼性は完全に一定の関係になるので、前
記燃焼検知素子２２で雰囲気酸素濃度低下、１次
空気口詰り、排気閉塞等による燃焼状態悪化を確
実に検出出来るものである。 In this embodiment, since all the air necessary for combustion is primary air, the oxygen concentration in the combustion exhaust gas and combustibility have a completely constant relationship. It is possible to reliably detect deterioration of the combustion state due to a decrease in concentration, clogging of the primary air port, blockage of exhaust gas, etc.
しかしながら、前記燃焼検知素子２２は、酸素
濃度特性と温度特性以外にCO等の還元ガスによ
つても抵抗値が変化するので、設定圧内のP3で燃
焼していたとき何らかの異常でP4まで圧力が低下
すると抵抗値は本来P4になり失火検知レベルR1
で燃焼を停止するはずであるが、P4が安定燃焼範
囲外の場合COが発生しR1より低いR′4になること
が起りうる。この場合、不完全燃焼状態が維持さ
れることになる。本実施例では、ガス供給圧が異
常に低下した場合に、燃焼装置内のガス供給圧を
検出し一定圧以下では燃焼を停止する手段を設け
ているので、燃焼状態が悪化する以前に燃焼を停
止出来るものである。 However, the resistance value of the combustion detection element 22 changes not only due to oxygen concentration characteristics and temperature characteristics but also due to reducing gas such as CO, so when combustion is being performed at P 3 within the set pressure, P 4 due to some abnormality. When the pressure decreases to , the resistance value becomes P 4 and the misfire detection level R 1
However, if P 4 is outside the stable combustion range, CO will be generated and R' 4 may be lower than R 1 . In this case, an incomplete combustion state will be maintained. In this embodiment, when the gas supply pressure drops abnormally, a means is provided to detect the gas supply pressure inside the combustion device and stop combustion when the pressure falls below a certain level, so combustion can be stopped before the combustion condition worsens. It can be stopped.
以上、実施例で説明したように本発明によれ
ば、２次空気の流入を防止した密閉状構成とした
燃焼室の予混合表面燃焼部近傍にSnO2、TiO2等
の酸素濃度センサを設けたので、雰囲気酸素濃度
低下時、１次空気口詰り時、排気閉塞時等による
燃焼状態悪化を確実に検出出来る。 As described above in the embodiments, according to the present invention, an oxygen concentration sensor such as SnO 2 or TiO 2 is provided near the premixing surface combustion part of the combustion chamber, which has a sealed structure that prevents the inflow of secondary air. Therefore, it is possible to reliably detect deterioration of the combustion state due to a decrease in the atmospheric oxygen concentration, a blockage of the primary air port, a blockage of the exhaust gas, etc.
さらに、燃焼室装置内のガス供給圧を検出して
燃焼を制御する手段を設けているので、ガス供給
圧が異常に低下した時にも確実に燃焼を停止出来
る安全性の高い燃焼装置を提供出来る。 Furthermore, since we have a means to control combustion by detecting the gas supply pressure within the combustion chamber device, we can provide a highly safe combustion device that can reliably stop combustion even when the gas supply pressure drops abnormally. .
第１図は本発明の一実施例の燃焼装置の構成原
理を示す側断面図、第２図はSnO2、TiO2等の酸
素濃度センサの特性図である。
２……バーナ、１０……燃焼室、２２……酸素
濃度センサ、２３……ガス圧力検出手段。
FIG. 1 is a side sectional view showing the principle of construction of a combustion device according to an embodiment of the present invention, and FIG. 2 is a characteristic diagram of an oxygen concentration sensor such as SnO 2 or TiO 2 . 2...Burner, 10...Combustion chamber, 22...Oxygen concentration sensor, 23...Gas pressure detection means.
Claims (1)
記空気給気口から外部空気を取り入れ、上記バー
ナで加熱して上記温風吹出口へ吹出す送風機と、
二次空気の流入を防止した上記バーナによつて形
成される燃焼室と、上記燃焼室内の燃焼面近傍に
配される酸素濃度センサと、上記バーナへ供給さ
れるガスの圧力を検出するガス圧力検出手段と、
上記酸素濃度センサの出力および上記ガス圧力検
出手段の出力により、上記バーナの燃焼を制御す
る制御手段とを備えた燃焼装置。1 a burner, an air supply port, a hot air outlet, and a blower that takes in external air from the air supply port, heats it with the burner, and blows it out to the hot air outlet;
A combustion chamber formed by the burner that prevents the inflow of secondary air, an oxygen concentration sensor disposed near the combustion surface within the combustion chamber, and a gas pressure that detects the pressure of gas supplied to the burner. detection means;
A combustion device comprising a control means for controlling combustion in the burner based on the output of the oxygen concentration sensor and the output of the gas pressure detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57100860A JPS58217117A (en) | 1982-06-11 | 1982-06-11 | Burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57100860A JPS58217117A (en) | 1982-06-11 | 1982-06-11 | Burner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58217117A JPS58217117A (en) | 1983-12-17 |
| JPS6146731B2 true JPS6146731B2 (en) | 1986-10-15 |
Family
ID=14285061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57100860A Granted JPS58217117A (en) | 1982-06-11 | 1982-06-11 | Burner |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58217117A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6393633U (en) * | 1986-12-04 | 1988-06-17 | ||
| JPH01160830U (en) * | 1988-04-11 | 1989-11-08 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424295Y2 (en) * | 1986-07-30 | 1992-06-08 |
-
1982
- 1982-06-11 JP JP57100860A patent/JPS58217117A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6393633U (en) * | 1986-12-04 | 1988-06-17 | ||
| JPH01160830U (en) * | 1988-04-11 | 1989-11-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58217117A (en) | 1983-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5807098A (en) | Gas heater with alarm system | |
| US4221557A (en) | Apparatus for detecting the occurrence of inadequate levels of combustion air at a flame | |
| US20020160325A1 (en) | Gas pilot system and method having improved oxygen level detection capability and gas fueled device including the same | |
| US20020160326A1 (en) | Gas pilot system and method having improved oxygen level detection capability and gas fueled device including the same | |
| JPS6146731B2 (en) | ||
| JPS5852913A (en) | Combustion safety apparatus | |
| JP5319308B2 (en) | Open combustion equipment | |
| JPS62223522A (en) | Controller for combustion type warm-air heater | |
| JPS58217153A (en) | Warm air room heating device | |
| JPS5939647B2 (en) | Combustion safety device | |
| JP5017249B2 (en) | Incomplete combustion detector | |
| KR102043684B1 (en) | Incomplete combustion detection device | |
| WO1982004303A1 (en) | Combustion device for suppressing exhaust of nitrogen oxide and preventing incomplete combustion | |
| JP4166208B2 (en) | Gas type discrimination method and combustion apparatus using the same | |
| JP3117583B2 (en) | Combustion safety device | |
| JPH081304B2 (en) | Safety device for all primary combustors | |
| JPH0133963Y2 (en) | ||
| JPH07269848A (en) | Combustion device | |
| JPH037731Y2 (en) | ||
| JPH08233260A (en) | Unburnt gas concentration-detecting device for combustion device | |
| JP3087200B2 (en) | Combustion safety device | |
| JP3249873B2 (en) | Combustion safety device | |
| JPS62225829A (en) | Control device for combustion type hot air heater | |
| JPS6044728A (en) | Premixing combustion device | |
| JPS6321089B2 (en) |