JPH0532653B2 - - Google Patents
Info
- Publication number
- JPH0532653B2 JPH0532653B2 JP60240302A JP24030285A JPH0532653B2 JP H0532653 B2 JPH0532653 B2 JP H0532653B2 JP 60240302 A JP60240302 A JP 60240302A JP 24030285 A JP24030285 A JP 24030285A JP H0532653 B2 JPH0532653 B2 JP H0532653B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- rotation speed
- motor
- amount
- control circuit
- 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 - Lifetime
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N1/00—Regulating fuel supply
- F23N1/02—Regulating fuel supply conjointly with air supply
- F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23N—REGULATING OR CONTROLLING COMBUSTION
- F23N2225/00—Measuring
- F23N2225/08—Measuring temperature
- F23N2225/18—Measuring temperature feedwater temperature
-
- 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
-
- 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
- F23N2235/16—Fuel valves variable flow or proportional 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)
- Control Of Combustion (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は温水器において燃焼用空気をフアンの
回転数にて調節して高負荷燃焼させるガス、石油
等の燃焼装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a combustion device for burning gas, oil, etc. in a water heater under high load by controlling combustion air by adjusting the rotational speed of a fan.
（従来の技術）
従来の強制吸排気式ガス燃焼器において、燃料
供給弁を制御しながらこれに同調させて燃焼用空
気の風量を調節制御するものは知られている。
（実開昭54−78938号）
（発明が解決しようとする問題点）
高負荷燃焼装置は、装置自体のコンパクト化を
目的とするものであり、狭い燃焼室内に多量の燃
料ガスと高圧力の燃焼用空気を送り込んで、大き
な燃焼量を得るものであるが、良好な燃焼を得る
ための空気過剰率の範囲が極めて小さい。(Prior Art) A conventional forced intake/exhaust type gas combustor is known in which the amount of combustion air is adjusted and controlled in synchronization with a fuel supply valve while controlling it.
(Utility Model Application No. 54-78938) (Problems to be Solved by the Invention) High-load combustion equipment aims to make the equipment itself more compact, and it uses a large amount of fuel gas and high pressure in a narrow combustion chamber. Although a large amount of combustion is obtained by feeding combustion air, the range of excess air ratio for obtaining good combustion is extremely small.
従つて、従来の高負荷燃焼装置においては、温
水の温度を温度センサーで検知し設定温と比較し
て、燃料ガス量と燃焼用空気量を制御して燃焼を
行う際、装置のコンパクト化により小型のモータ
を使用すると燃焼室内の空気圧力が不足気味とな
り、また外乱等によつてフアン回転数にバラツキ
が生じて、空気過剰率は良好範囲から外れてしま
い、燃焼不隣を起こすという問題点があつた。 Therefore, in conventional high-load combustion equipment, the temperature of hot water is detected by a temperature sensor and compared with the set temperature to control the amount of fuel gas and combustion air for combustion. When a small motor is used, the air pressure in the combustion chamber tends to be insufficient, and the fan rotation speed varies due to external disturbances, causing the excess air ratio to deviate from a good range, resulting in combustion imbalance. It was hot.
また、点火時や負荷容量（燃焼量）の増大時に
は比例弁が急速に開弁して燃料ガス量が急激に増
加するが、それに対する燃焼用空気の追従が遅
く、空気不足となつて空気過剰率は良好範囲から
外れてしまい不完全燃焼を起こすという問題点が
あつた。 Also, when ignition or when the load capacity (combustion amount) increases, the proportional valve opens rapidly and the amount of fuel gas increases rapidly, but the combustion air is slow to follow this, resulting in air shortage and excess air. There was a problem that the combustion rate was out of the good range and incomplete combustion occurred.
本発明は上記問題点を解決し、空気過剰率を良
好範囲に一定に保ち、良好な燃焼状態を確保でき
る高負荷燃焼装置の提供を目的とする。 The present invention aims to solve the above-mentioned problems and provide a high-load combustion device that can maintain a constant excess air ratio within a good range and ensure a good combustion state.
（問題点を解決するための手段）
本発明は、温水の温度を温度センサーにて比較
検知してその信号により燃料供給弁を制御すると
ともに燃焼用送風機の風量を制御する水加熱の高
負荷燃焼装置に於いて、該燃焼用送風機を直流モ
ータにて構成し、温度センサー出力信号を設定出
力と比較して風量回路より回転数制御回路へ出力
し、駆動回路により直流モータを駆動し該直流モ
ータの実際の回転数検知により風量を制御した。(Means for Solving the Problems) The present invention provides high-load combustion for water heating in which the temperature of hot water is comparatively detected by a temperature sensor, and the signal is used to control the fuel supply valve and the air volume of the combustion blower. In the device, the combustion blower is configured with a DC motor, the temperature sensor output signal is compared with a set output, and outputted from the air volume circuit to the rotation speed control circuit, and the drive circuit drives the DC motor. The air volume was controlled by detecting the actual rotation speed.
（作用）
本発明においては、設定出力に対する温度セン
サー出力に応じて燃料供給弁が制御されて燃料供
給量が設定されるとともに、燃焼用送風機の設定
が設定され、更に、風量制御回路を介して回転数
制御回路で燃焼用送風機の風量すなわち設定回転
数が直流モータの実際の回転数と比較され、実際
の回転数が設定回転数と同一となる様駆動回路を
介して所定の駆動直流電流が直流モータに与えら
れ、燃焼用送風機の回転は設定回転数に確保され
る。(Function) In the present invention, the fuel supply valve is controlled according to the temperature sensor output with respect to the set output to set the fuel supply amount, and the setting of the combustion blower is also set. The rotation speed control circuit compares the air volume of the combustion blower, that is, the set rotation speed, with the actual rotation speed of the DC motor, and a predetermined drive DC current is applied via the drive circuit so that the actual rotation speed is the same as the set rotation speed. The direct current is supplied to the motor, and the rotation of the combustion blower is maintained at the set rotation speed.
これにより、燃焼量の変化に応じて、燃焼用空
気の量を適切に変化させる事ができ、空気過剰率
は一定に制御される。 Thereby, the amount of combustion air can be appropriately changed according to the change in the combustion amount, and the excess air ratio can be controlled to be constant.
（実施例） 本発明の一実施例について詳述する。(Example) An embodiment of the present invention will be described in detail.
１はAC100Vが供給される電源、２は温水温度
と検知する温度センサーのサーミスター、３はサ
ーミスター２の抵抗−温度特性を利用して動作す
る比例制御回路でありガス比例弁４を供給する電
流を制御し、湯温が一定となるようにガス量を制
御している。５は燃焼用送風機たるフアンであ
り、５′は直流モータである。６はサーミスター
２の抵抗−温度特性を利用して直流モータ５′を
制御するフアン５の回転数制御回路であり、風量
制御回路８より制御信号が供給され動作する。 1 is a power supply supplied with AC100V, 2 is a thermistor of a temperature sensor that detects hot water temperature, and 3 is a proportional control circuit that operates using the resistance-temperature characteristics of thermistor 2, which supplies gas proportional valve 4. The current is controlled and the amount of gas is controlled to keep the water temperature constant. 5 is a fan serving as a combustion blower, and 5' is a DC motor. Reference numeral 6 denotes a rotation speed control circuit for the fan 5, which controls the DC motor 5' by using the resistance-temperature characteristics of the thermistor 2, and is operated by being supplied with a control signal from the air volume control circuit 8.
電源を投入すると、比例弁４及びフアン５が動
作する。この状態でサーミスター２が温水温度を
検知してそれに応じて抵抗を示し、温度センサー
出力と設定出力との比較に応じて比例制御回路３
及び風量制御回路８を動作させる。比例制御回路
３の動作により比例弁４は所定量のガスを供給し
て温水の温度に応じた高負荷燃焼量が得られる。 When the power is turned on, the proportional valve 4 and the fan 5 operate. In this state, the thermistor 2 detects the hot water temperature and shows resistance accordingly, and the proportional control circuit 3
and operates the air volume control circuit 8. Through the operation of the proportional control circuit 3, the proportional valve 4 supplies a predetermined amount of gas to obtain a high-load combustion amount corresponding to the temperature of the hot water.
また、風量制御回路８の動作によりその制御信
号を受けて回転数制御回路６を動作させ、AC−
DC交換回路及び駆動回路７を介して駆動直流電
流が直流モータ５′に与えられサーミスター２が
検知した温水温度に応じた高負荷燃焼量に見合つ
た風量がフアン５の回転により供給される。第２
図においてPSは圧力（静圧）としＱは風量を示
している。高圧力（PS）を得るためには回転数
を高めなければならず、交流モータにては回転数
は一定化してしまい高回転数には限度が出来てし
まうので直流モータにてこれに対応出来る。 In addition, the rotation speed control circuit 6 is operated in response to the control signal by the operation of the air volume control circuit 8, and the AC-
A driving DC current is applied to the DC motor 5' via the DC exchange circuit and the drive circuit 7, and an air volume corresponding to the high-load combustion amount corresponding to the hot water temperature detected by the thermistor 2 is supplied by rotation of the fan 5. Second
In the figure, PS indicates pressure (static pressure) and Q indicates air volume. In order to obtain high pressure (PS), the rotation speed must be increased, and with an AC motor, the rotation speed becomes constant and there is a limit to the high rotation speed, so a DC motor can handle this. .
上述のように温水の温度を検知して設定温度と
検知温度との比較によりガス量及び燃焼用空気量
を決めているため、ガス量の大小に応じた燃焼用
空気量がフアン５の回転数として可変的に設定さ
れ、更にフアン５の実際の回転数は回転数検知回
路１０で検知れさ、設定回転数と同一になる様、
回転数制御回路から信号が出されるため、燃焼用
空気の供給量のバラツキは無くなり、空気過剰率
は良好燃焼範囲内で一定に保たれる。 As mentioned above, the amount of gas and the amount of combustion air are determined by detecting the temperature of hot water and comparing the set temperature and the detected temperature, so the amount of combustion air depends on the amount of gas and the rotation speed of the fan 5. Further, the actual rotation speed of the fan 5 is detected by the rotation speed detection circuit 10 so that it becomes the same as the set rotation speed.
Since a signal is issued from the rotational speed control circuit, variations in the amount of combustion air supplied are eliminated, and the excess air ratio is kept constant within a good combustion range.
また、フアン５は直流モータ５′を備えるため、
低速回転から高速回転までの回転制御幅が広く
（可変範囲が大きく）出力も50％〜60％上昇し、
高圧力の燃焼用空気が可能となつて良好な高負荷
燃焼が得られるとともに、駆動直流電流に対し、
直流モータの回転数は応答性良く反応するため、
点火時や負荷容量（燃焼量）の増大時にも、ガス
量の急激な変化に対し、フアン５は早く追従する
事ができ、良好な空気過剰率の燃焼用空気を供給
されて、高負荷燃焼状態は良好に保たれる。 Furthermore, since the fan 5 is equipped with a DC motor 5',
The rotation control range from low speed rotation to high speed rotation is wide (large variable range), and the output increases by 50% to 60%.
It is possible to use high-pressure combustion air to achieve good high-load combustion, and the drive DC current is
Since the rotation speed of the DC motor is responsive,
Even during ignition or when the load capacity (combustion amount) increases, the fan 5 can quickly follow sudden changes in the gas amount, and is supplied with combustion air with a good excess air ratio, resulting in high-load combustion. It is kept in good condition.
尚、燃焼用送風機の実回転数の回転数検知は、
例えば回転数をホールICから出力端子信号によ
り回転数をパルス化し、それを検知することによ
つて実際の回転数を検知が出来る。 In addition, the rotation speed detection of the actual rotation speed of the combustion blower is
For example, the actual rotation speed can be detected by converting the rotation speed into a pulse using an output terminal signal from a Hall IC and detecting the pulse.
（発明の効果）
本発明は高圧力の燃焼用空気を必要とし、良好
燃焼を得るための空気過剰率の範囲が極めて小さ
く、燃焼不良を起こし易い高負荷燃焼装置におい
て、燃焼用空気の供給を、直流モータで回転する
燃焼用送風機で行い、その回転数を燃料供給量を
温度センサーによる検知温度に基づき設定すると
共に、実際の回転数を検知して設定回転数と同一
に確保したものであり、これによつて高圧力及び
応答性の良い直流モータの特性から、コンパクト
な形態での高負荷燃焼そのものを可能にし、点火
時等負荷変動の大きい場合にも回転数は追従性良
く対応でき、且つ回転数は設定回転数と同一に確
保される事により、燃料供給量に対する燃焼用空
気の空気過剰率は常に良好な燃焼範囲内で一定に
保たれ、燃焼不良を起すことはない。(Effects of the Invention) The present invention is effective in supplying combustion air in high-load combustion equipment that requires high-pressure combustion air, has an extremely small range of excess air ratio for obtaining good combustion, and is likely to cause poor combustion. This is done using a combustion blower rotated by a DC motor, and its rotation speed is set based on the fuel supply amount based on the temperature detected by a temperature sensor, and the actual rotation speed is detected to ensure the same rotation speed as the set rotation speed. As a result, due to the characteristics of a DC motor with high pressure and good response, it is possible to perform high-load combustion in a compact form, and the rotation speed can be easily followed even when there are large load fluctuations such as during ignition. In addition, by ensuring the rotation speed is the same as the set rotation speed, the excess air ratio of combustion air to the amount of fuel supplied is always kept constant within a good combustion range, and poor combustion does not occur.
従つて、燃焼余裕の小さい高負荷燃焼において
安定したきめ細かな制御が可能となる。 Therefore, stable and fine-grained control is possible in high-load combustion with a small combustion margin.
また応答性が良く燃焼用送風機の回転数は増加
するため、点火時のパージ時間は短縮できて着火
が早くなり使い勝手が向上する。 In addition, since the response is good and the rotational speed of the combustion blower increases, the purge time during ignition can be shortened, ignition occurs quickly, and usability is improved.
また、直流モータは高速回転高圧力が可能であ
るため、フアンの羽根径を小型にでき、高負荷燃
焼装置自体をコンパクトに出来る効果を有する。 Furthermore, since the DC motor is capable of high-speed rotation and high pressure, the diameter of the fan blades can be made smaller, which has the effect of making the high-load combustion device itself more compact.
第１図は本発明の構造図、第３図は本発明の回
路図説明図、第２図は圧力一風量の関係説明図で
ある。
１……電源、２……サーミスター（温度センサ
ー）、３……比例制御回路、４……比例弁、５…
…フアン（直流モータ）、６……回転数制御回路、
７……駆動回路、８……風量制御回路、９……水
量、１０……回転数検知回路、１１……バーナ、
１２……熱交換器、１３……給水管、１４……出
湯管、Ａ……制御回路。
FIG. 1 is a structural diagram of the present invention, FIG. 3 is an explanatory circuit diagram of the present invention, and FIG. 2 is an explanatory diagram of the relationship between pressure and air volume. 1...Power source, 2...Thermistor (temperature sensor), 3...Proportional control circuit, 4...Proportional valve, 5...
...Fan (DC motor), 6...Rotation speed control circuit,
7... Drive circuit, 8... Air volume control circuit, 9... Water amount, 10... Rotation speed detection circuit, 11... Burner,
12... Heat exchanger, 13... Water supply pipe, 14... Hot water outlet pipe, A... Control circuit.
Claims (1)
その信号により燃焼供給弁を制御するとともに燃
焼用送風機の風量を制御する水加熱の高負荷燃焼
装置に於いて、該燃焼用送風機を直流モータにて
構成し、温度センサー出力信号を設定出力と比較
して風量制御回路より回転数制御回路へ出力し、
駆動回路により直流モータを駆動し該直流モータ
の実際の回転数検知により風量を制御したことを
特徴とする高負荷燃焼装置。1. In a water heating high-load combustion device that compares and detects the temperature of hot water with a temperature sensor and uses the signal to control the combustion supply valve and the air volume of the combustion blower, the combustion blower is replaced with a DC motor. Compares the temperature sensor output signal with the set output and outputs it from the air volume control circuit to the rotation speed control circuit,
A high-load combustion device characterized in that a DC motor is driven by a drive circuit, and the air volume is controlled by detecting the actual rotational speed of the DC motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60240302A JPS62102026A (en) | 1985-10-26 | 1985-10-26 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60240302A JPS62102026A (en) | 1985-10-26 | 1985-10-26 | Combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62102026A JPS62102026A (en) | 1987-05-12 |
| JPH0532653B2 true JPH0532653B2 (en) | 1993-05-17 |
Family
ID=17057440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60240302A Granted JPS62102026A (en) | 1985-10-26 | 1985-10-26 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62102026A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0561643U (en) * | 1991-11-29 | 1993-08-13 | サンデン株式会社 | Combustor and water heater |
| US7802984B2 (en) * | 2006-04-07 | 2010-09-28 | Thomas & Betts International, Inc. | System and method for combustion-air modulation of a gas-fired heating system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55162535A (en) * | 1979-06-06 | 1980-12-17 | Sanden Corp | Combustion control device |
| JPS5698395A (en) * | 1979-12-31 | 1981-08-07 | Omron Tateisi Electronics Co | Combustion control device |
| JPS58107447U (en) * | 1982-01-14 | 1983-07-21 | 株式会社ノーリツ | Forced draft combustion equipment |
| JPS6028465U (en) * | 1983-08-01 | 1985-02-26 | 三菱電機株式会社 | Blower for supplying combustion air |
-
1985
- 1985-10-26 JP JP60240302A patent/JPS62102026A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62102026A (en) | 1987-05-12 |
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