JP2754575B2 - Combustion equipment - Google Patents
Combustion equipmentInfo
- Publication number
- JP2754575B2 JP2754575B2 JP63133308A JP13330888A JP2754575B2 JP 2754575 B2 JP2754575 B2 JP 2754575B2 JP 63133308 A JP63133308 A JP 63133308A JP 13330888 A JP13330888 A JP 13330888A JP 2754575 B2 JP2754575 B2 JP 2754575B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- blower
- combustion chamber
- pressure
- chamber
- 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 - Fee Related
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/04—Measuring pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2233/00—Ventilators
- F23N2233/06—Ventilators at the air intake
- F23N2233/08—Ventilators at the air intake with variable speed
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】 産業上の利用分野 本発明は、給湯機の燃焼室の小型化に伴い発生する振
動燃焼を防止、軽減する高負荷型給湯機用燃焼装置に関
するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus for a high-load water heater that prevents and reduces oscillating combustion that occurs with downsizing of a combustion chamber of the water heater.
従来の技術 従来のこの種の給湯機用燃焼装置は、第２図に示すよ
うに、燃焼装置の下部より、送風機１、空気供給室２、
ノズル３、バーナ４、燃焼室５、熱交換器６、排気筒７
と構成されており、燃焼用空気は、送風機１より空気供
給室２に供給され、バーナ４に供給され燃料はノズル３
より燃焼室５内で燃焼を完結した後、熱交換器６を経由
して排気筒７より排気されていた。2. Description of the Related Art As shown in FIG. 2, this type of conventional water heater combustion apparatus includes a blower 1, an air supply chamber 2,
Nozzle 3, burner 4, combustion chamber 5, heat exchanger 6, exhaust stack 7
Combustion air is supplied from a blower 1 to an air supply chamber 2, supplied to a burner 4 and supplied to a nozzle 3.
After the combustion was completed in the combustion chamber 5, the exhaust gas was exhausted from the exhaust stack 7 via the heat exchanger 6.
発明が解決しようとする課題 しかしながら上記のような構成では、燃焼装置を小型
化し、燃焼負荷を大きくすると燃焼装置の持つ固有振動
数に燃焼反応による圧力変動が共振し、振動燃焼を起こ
すという課題を有していた。Problems to be Solved by the Invention However, in the above configuration, when the combustion device is downsized and the combustion load is increased, the pressure fluctuation due to the combustion reaction resonates at the natural frequency of the combustion device, causing the problem of oscillating combustion. Had.
本発明はかかる従来の課題を解消するもので、振動燃
焼を抑制することを目的とする。The present invention solves such a conventional problem, and has an object to suppress vibration combustion.
課題を解決するための手段 上記課題を解決するために本発明の燃焼装置は燃焼用
空気を供給する送風機と、送風機の下流にある空気供給
室と、空気供給室に内蔵されたバーナと、バーナの下流
に位置している燃焼室と、燃焼室外壁に配設された圧力
センサーと、圧力センサーにより検知された燃焼室圧力
増減に比例して回転数を増減させ振動燃焼を抑制するよ
うに送風機を制御する制御器とからなっている。Means for Solving the Problems In order to solve the above problems, a combustion device of the present invention includes a blower for supplying combustion air, an air supply chamber downstream of the blower, a burner built in the air supply chamber, and a burner. And a pressure sensor disposed on the outer wall of the combustion chamber, and a blower that suppresses oscillating combustion by increasing or decreasing the rotation speed in proportion to the increase or decrease in the pressure of the combustion chamber detected by the pressure sensor. And a controller for controlling the
作用 第２図を用いて本発明の作用を説明する。Operation The operation of the present invention will be described with reference to FIG.
燃焼装置が振動燃焼を始めると、燃焼装置全体、特に
燃焼室の圧力変動が大きくなり数Hzから数千Hzで変動を
繰り返すもので、変動成分として取り扱うべきである
が、簡単のため静的に説明する。まず、圧力が上昇した
場合には機器抵抗が実線から破線に増大し、動作点がａ
からｂに移動し風量が減少する。つぎに風量が減すれば
機器抵抗は減少し逆に風量が増加する。このような繰返
しにより振動燃焼が継続するのである。When the combustion device starts oscillating combustion, the pressure fluctuation in the entire combustion device, especially in the combustion chamber, becomes large and repeats the fluctuation at several Hz to several thousand Hz. explain. First, when the pressure rises, the device resistance increases from the solid line to the broken line, and the operating point becomes a
To b, and the air volume decreases. Next, if the air volume decreases, the device resistance decreases and the air volume increases. Oscillation combustion continues by such repetition.
そこで、燃焼室の圧力を圧力センサーにより検知し、
燃焼室の圧力が上昇し動作点がａからｂに移動した場合
には、制御器により送風機の回転数を上昇させ送風機特
性を破線とし動作点をｃとして風量がａと同様になるよ
うに制御するため風量の増減がなく振動燃焼が抑制でき
るのである。Therefore, the pressure in the combustion chamber is detected by a pressure sensor,
When the pressure in the combustion chamber rises and the operating point moves from a to b, the controller increases the number of revolutions of the blower, controls the blower characteristic with a broken line, sets the operating point to c, and controls the air volume to be similar to a. As a result, there is no increase or decrease in the air volume, and the oscillating combustion can be suppressed.
この時、送風機等の風量変動部が燃焼室の上流側、す
なわち混合気側にあれば、火炎と流量変動が相互干渉し
火炎が大きく乱れて振動燃焼が発生し易くなるものの、
逆に抑制することが可能となる。一方、風量変動部が下
流側にあれば火炎との干渉はなく振動燃焼には至り難く
なるものの、今度は逆に振動燃焼が発生した場合には、
これを抑制することができない。At this time, if the air volume fluctuation portion such as a blower is on the upstream side of the combustion chamber, that is, on the air-fuel mixture side, the flame and the flow rate fluctuation interfere with each other, the flame is greatly disturbed, and the oscillating combustion is easily generated.
Conversely, it can be suppressed. On the other hand, if the air volume fluctuation part is on the downstream side, there is no interference with the flame and it is difficult to reach oscillating combustion, but if oscillating combustion occurs this time,
This cannot be suppressed.
実施例 本発明の給湯器における実施例を第１図により説明す
る。第１図において１は送風機、２は空気供給室、３は
ノズル、４はバーナ、５は燃焼室、６は熱交換器、７は
排気筒、８は圧力センサー、９は制御器である。Embodiment An embodiment of a water heater according to the present invention will be described with reference to FIG. In FIG. 1, 1 is a blower, 2 is an air supply chamber, 3 is a nozzle, 4 is a burner, 5 is a combustion chamber, 6 is a heat exchanger, 7 is an exhaust pipe, 8 is a pressure sensor, and 9 is a controller.
空気は送風機１より空気供給室２に供給され、燃料は
ノズル３よりバーナ４に供給され、燃焼室５内で燃焼
し、熱交換器６を経由して排気筒７より排気される。燃
焼室５の外壁に配設された圧力センサー８は燃焼室の圧
力を検知し制御器９に伝えるとともに、制御器９は燃焼
室５の圧力増減に比例して送風機１の回転数を増減さ
せ、風量を制御する。The air is supplied from the blower 1 to the air supply chamber 2, the fuel is supplied from the nozzle 3 to the burner 4, burns in the combustion chamber 5, and is exhausted from the exhaust stack 7 via the heat exchanger 6. The pressure sensor 8 disposed on the outer wall of the combustion chamber 5 detects the pressure in the combustion chamber and transmits it to the controller 9, and the controller 9 increases or decreases the rotation speed of the blower 1 in proportion to the increase or decrease in the pressure in the combustion chamber 5. Control the air volume.
本実施例の給湯器では、燃焼室５内の圧力変動が生じ
た場合であっても、燃焼室５の上流側に位置する送風機
１を制御することにより、風量変動を抑制することがで
き、燃焼装置の持つ固有振動数に、風量変動と火炎が相
互干渉して生じる燃焼反応による圧力変動が共振するこ
となく振動燃焼を抑制することができる。In the water heater of the present embodiment, even when the pressure fluctuation in the combustion chamber 5 occurs, the air flow fluctuation can be suppressed by controlling the blower 1 located on the upstream side of the combustion chamber 5, Oscillating combustion can be suppressed without causing resonance in the natural frequency of the combustion device due to pressure fluctuations caused by a combustion reaction caused by mutual interference between the air volume fluctuation and the flame.
発明の効果 上述した構成により本発明は次のような効果がある。Effects of the Invention With the above-described configuration, the present invention has the following effects.
（１） 圧力センサーにより燃焼室内の圧力増減を検知
し、その圧力増減に比例して送風機の回転数を増減させ
るため、風量変動がなく振動燃焼が抑制できる。(1) The pressure sensor detects the increase or decrease in the pressure in the combustion chamber, and increases or decreases the rotation speed of the blower in proportion to the increase or decrease in the pressure.
（２） 強風や排気詰りにより燃焼室内の圧力が上昇し
た場合でも風量が変化しないため燃料不良を生じること
がない。(2) Even if the pressure in the combustion chamber increases due to strong wind or clogged exhaust gas, the air volume does not change, so that fuel failure does not occur.
第１図は本発明の一実施例の燃焼装置を用いた給湯器の
断面図、第２図は同燃焼装置の抵抗と送風機特性とを表
わす特性図、第３図は従来例の給湯器の断面図である。 １……送風機、２……空気供給室、４……バーナ、５…
…燃焼室、８……圧力センサー、９……制御器。FIG. 1 is a sectional view of a water heater using a combustion device according to one embodiment of the present invention, FIG. 2 is a characteristic diagram showing resistance and blower characteristics of the combustion device, and FIG. It is sectional drawing. 1 ... blower, 2 ... air supply chamber, 4 ... burner, 5 ...
... combustion chamber, 8 ... pressure sensor, 9 ... controller.
Claims (1)
機の下流にある空気供給室と、この空気供給室に内蔵さ
れたバーナと、このバーナの下流に位置している燃焼室
と、この燃焼室の外壁に配設された圧力センサーと、こ
の圧力センサーにより検知された前記燃焼室の圧力増減
に比例して前記送風機の回転数を増減させ振動燃焼を抑
制するように制御する制御器とからなる燃焼装置。1. A blower for supplying combustion air, an air supply chamber downstream of the blower, a burner built in the air supply chamber, a combustion chamber located downstream of the burner, A pressure sensor disposed on the outer wall of the combustion chamber, and a controller that controls the rotational speed of the blower to increase or decrease the number of revolutions of the blower in proportion to the increase or decrease in the pressure of the combustion chamber detected by the pressure sensor, thereby suppressing vibration combustion. Combustion device consisting of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63133308A JP2754575B2 (en) | 1988-05-31 | 1988-05-31 | Combustion equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63133308A JP2754575B2 (en) | 1988-05-31 | 1988-05-31 | Combustion equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01302022A JPH01302022A (en) | 1989-12-06 |
| JP2754575B2 true JP2754575B2 (en) | 1998-05-20 |
Family
ID=15101633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63133308A Expired - Fee Related JP2754575B2 (en) | 1988-05-31 | 1988-05-31 | Combustion equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2754575B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03244918A (en) * | 1990-02-21 | 1991-10-31 | Sunpot Co Ltd | Controller for combustion apparatus |
| CN110057105B (en) * | 2018-01-19 | 2020-09-25 | 美的集团股份有限公司 | Gas water heater |
| CN112161292A (en) * | 2020-09-14 | 2021-01-01 | 华帝股份有限公司 | Combustion state control method of combustion system and water heater using combustion state control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56100227A (en) * | 1980-01-10 | 1981-08-12 | Sumitomo Metal Ind Ltd | Furnace pressure controller |
-
1988
- 1988-05-31 JP JP63133308A patent/JP2754575B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01302022A (en) | 1989-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |