JP2000171032A - Heating device - Google Patents
Heating deviceInfo
- Publication number
- JP2000171032A JP2000171032A JP10348539A JP34853998A JP2000171032A JP 2000171032 A JP2000171032 A JP 2000171032A JP 10348539 A JP10348539 A JP 10348539A JP 34853998 A JP34853998 A JP 34853998A JP 2000171032 A JP2000171032 A JP 2000171032A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- fuel
- air
- heating device
- burner
- 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.)
- Granted
Links
Landscapes
- Regulation And Control Of Combustion (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、工業用加熱炉、ボ
イラ、家庭用給湯器等の加熱装置において、加熱用バー
ナに供給される燃料若しくは空気又は空気と燃料の混合
気の流量を正確に供給し、ＮＯｘ生成抑制が可能な加熱
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for an industrial heating furnace, a boiler, a household water heater or the like, which accurately controls the flow rate of fuel or air or a mixture of air and fuel supplied to a heating burner. The present invention relates to a heating device that can supply and suppress generation of NOx.
【０００２】[0002]
【従来の技術】従来、加熱装置に備えられたバーナの燃
焼量の制御は、開度を連続的に可変できる流量調整弁を
用いて、燃料若しくは燃料と空気の混合気の流量を調整
することにより行っている。その流量調整弁は、主に、
制御モータ若しくは空圧機器を使用してバタフライ弁を
アナログ制御にて回転させ、燃料若しくは混合気の流路
の開度を調整することにより流量を調整するものであ
り、この場合、回転角と開度は線形関係にはならず、バ
タフライ弁の圧損等やバタフライ弁の反応速度等を考慮
する必要があったため、正確に燃料若しくは混合気の流
量を制御することは困難であった。また、空気と燃料の
混合比の調整は供給される空気を流量調整弁の開度で調
整するか、ブロアやファンの回転数を変更して調整して
行っていた。これも正確な流量の調整は行えず、ＮＯｘ
生成の抑制を行う上で正確且高速に空気燃料比を設定す
ることは困難であった。正確な流量制御をバルブポート
の形状を工夫した流量制御弁も一部で使用されている
が、高価であるためコスト的に不利であった。以上の構
成はすべてアナログ信号による制御であって、燃焼量若
しくは燃料と空気の混合比を瞬時に変化させることは困
難であった。また、ＮＯｘ生成の抑制を行うためには、
空気と燃料の混合比を正確に行うことが必要で、燃焼量
を変化させる場合は、それに対応させて正確且高速に混
合比を制御することが必要であった。2. Description of the Related Art Conventionally, the combustion amount of a burner provided in a heating device is controlled by adjusting the flow rate of fuel or a mixture of fuel and air by using a flow control valve capable of continuously varying an opening degree. It is done by. The flow control valve is mainly
The butterfly valve is rotated by analog control using a control motor or a pneumatic device, and the flow rate is adjusted by adjusting the degree of opening of the fuel or air-fuel mixture flow path. Since the degree does not have a linear relationship and it is necessary to consider the pressure loss of the butterfly valve, the reaction speed of the butterfly valve, and the like, it has been difficult to accurately control the flow rate of the fuel or the air-fuel mixture. In addition, the adjustment of the mixing ratio of air and fuel has been performed by adjusting the supplied air by the opening degree of the flow control valve or by changing the rotation speed of the blower or the fan. In this case, too, accurate flow rate adjustment cannot be performed and NOx
It has been difficult to set the air-fuel ratio accurately and at high speed in suppressing generation. Although a flow control valve in which the shape of the valve port is devised for accurate flow control is used in part, it is disadvantageous in terms of cost because it is expensive. All of the above configurations are controlled by analog signals, and it is difficult to instantaneously change the amount of combustion or the mixture ratio of fuel and air. In order to suppress NOx generation,
It is necessary to accurately control the mixing ratio of air and fuel, and when changing the amount of combustion, it is necessary to control the mixing ratio accurately and at high speed in accordance with the change.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、以上の事情
に鑑みて、加熱装置に備えられたバーナに供給される燃
料、空気、若しくは燃料空気混合気の流量を簡単な構造
で精密に制御し、燃焼量の正確な調整や、ＮＯｘ削減等
に対して最適な空気燃料比の正確な制御を実現する加熱
装置を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above circumstances, the present invention precisely controls the flow rate of fuel, air, or a fuel-air mixture supplied to a burner provided in a heating device with a simple structure. It is another object of the present invention to provide a heating device that realizes accurate adjustment of the combustion amount and accurate control of the optimum air-fuel ratio for reducing NOx and the like.
【０００４】[0004]
【課題を解決するための手段】本発明に係る加熱装置
は、燃焼室に加熱用のバーナを備え、前記バーナに燃料
若しくは空気又は燃料空気混合気の流体を供給し燃焼さ
せる加熱装置であって、前記流体の少なくとも１つの流
路に開閉弁を備え、前記開閉弁を周期的に開閉させ、開
時間比率としてデューティー比を変更可能とするデュー
ティー比制御手段を備えたことを特徴とするものであ
る。この構成により、前記開閉弁のデューティー比を制
御することにより、それぞれの流量を正確に調整するこ
とができる。また、開閉弁にソレノイドバルブを使用
し、デジタル制御することにより高速な制御が可能とな
り、Ｄ−Ａ変換器の必要もなくコスト的にも有利であ
る。燃料若しくは燃料空気の混合気の流路に前記開閉弁
を設けた場合は、正確な燃焼量の調整が可能となり、空
気の流路に前記開閉弁を設けた場合は、燃焼量に応じた
最適な空気比を設定することが可能になる。また、本発
明に係る加熱装置は、燃焼室に加熱用のバーナを備え、
前記バーナに燃料と空気を供給し燃焼させる加熱装置で
あって、前記燃料の流路と前記空気の流路に開閉弁をそ
れぞれ備え、前記それぞれの開閉弁を周期的に開閉さ
せ、それぞれの開閉動作の位相差を変更可能とする位相
差制御手段を備えたことを特徴とするものである。この
構成によると、ＮＯｘ生成を抑制するための最適な位相
差を設定し燃焼させることが可能であり、例えば、燃料
用開閉弁に対して空気用開閉弁の開閉動作の遅れ周期と
して位相差を４０％程度にすると、位相差０％、すなわ
ち開閉を同期で行うときよりもＮＯｘ生成量を半分程度
に抑制することができる。さらに、前記開閉弁の開時間
比率としてデューティー比を変更可能とするデューティ
ー比制御手段を備えることもでき、燃料又は空気の流量
を正確に調整することができる。A heating device according to the present invention is a heating device having a combustion chamber provided with a heating burner, and supplying fuel or air or a fluid of a fuel-air mixture to the burner for combustion. An open / close valve provided in at least one flow path of the fluid, and a duty ratio control means for opening and closing the open / close valve periodically to change a duty ratio as an open time ratio. is there. With this configuration, by controlling the duty ratio of the on-off valve, each flow rate can be accurately adjusted. Further, by using a solenoid valve as an on-off valve and performing digital control, high-speed control becomes possible, and there is no need for a DA converter, which is advantageous in cost. When the on-off valve is provided in the flow path of the fuel or fuel-air mixture, accurate adjustment of the combustion amount is possible, and when the on-off valve is provided in the air flow path, the optimum combustion amount is adjusted according to the combustion amount. It is possible to set an appropriate air ratio. Further, the heating device according to the present invention includes a burner for heating the combustion chamber,
A heating device that supplies fuel and air to the burner and burns the fuel, and includes an on-off valve in each of the fuel flow path and the air flow path, and periodically opens and closes each of the on-off valves. A phase difference control means for changing the phase difference of the operation is provided. According to this configuration, it is possible to set an optimal phase difference for suppressing NOx generation and perform combustion. For example, the phase difference is set as a delay period of the opening / closing operation of the air on-off valve with respect to the fuel on-off valve. When it is set to about 40%, the phase difference is 0%, that is, the NOx generation amount can be suppressed to about half as compared with the case where opening and closing are performed synchronously. Further, a duty ratio control unit that can change a duty ratio as an opening time ratio of the on-off valve can be provided, and the flow rate of fuel or air can be accurately adjusted.
【０００５】それぞれの構成で、前記開閉弁の周期的な
開閉動作の周波数を１〜２００Ｈｚとすることができ、
前記開閉弁を例えば自動車等に使用されているソレノイ
ド式の燃料噴出器を使用することで、２００Ｈｚ程度の
高周波数の開閉動作が可能で、耐久性にも優れている。
また、燃焼室内の温度が燃料の自着火温度以上の場合
は、連続運転可能であるが、燃焼室内の温度が自着火温
度以下の場合は、燃焼室に連続火花放電可能なスパーク
ロッドや連続的に燃焼しているパイロットバーナ等を設
置し、連続的に再点火を行うことで連続運転可能とな
る。さらに、前記周波数が約２０Ｈｚ以上の場合は、前
記開閉弁の周期的な開閉動作による流体の脈動は配管経
路の抵抗で整流されるので、安定した燃焼を発生するこ
とができ、前記周波数が約１０Ｈｚ以下の場合は、ＮＯ
ｘ生成抑制が期待される。すなわち、燃料若しくは混合
気の供給が休止中に前に供給された燃料若しくは燃料と
空気の混合気が燃焼室内で炉気にて希釈され、燃料濃度
や酸素濃度が低下してからゆっくりと燃焼する緩慢燃焼
となり、ＥＧＲ（排ガス再循環）の作用があるからであ
る。In each configuration, the frequency of the periodic opening and closing operation of the on-off valve can be set to 1 to 200 Hz,
By using a solenoid type fuel ejector used in, for example, an automobile for the opening / closing valve, the opening / closing operation at a high frequency of about 200 Hz is possible and the durability is excellent.
When the temperature in the combustion chamber is equal to or higher than the self-ignition temperature of the fuel, continuous operation is possible. However, when the temperature in the combustion chamber is equal to or lower than the self-ignition temperature, a spark rod or a continuous A continuous operation can be performed by installing a burning pilot burner or the like and performing re-ignition continuously. Further, when the frequency is about 20 Hz or more, the pulsation of the fluid due to the periodic opening / closing operation of the on-off valve is rectified by the resistance of the pipe path, so that stable combustion can be generated, and the frequency is about 20 Hz. NO for 10Hz or less
x generation suppression is expected. That is, while the supply of the fuel or the air-fuel mixture is stopped, the previously supplied fuel or the air-fuel mixture is diluted with the furnace air in the combustion chamber, and the fuel or the air is slowly burned after the fuel or oxygen concentration is reduced. This is because slow combustion takes place and there is an EGR (exhaust gas recirculation) effect.
【０００６】前記開閉弁を流れる流体の圧力又は流量を
調整可能な圧力調整弁又は定流量弁若しくは流量制御弁
を前記開閉弁の上流側に備えることも好ましい。たとえ
ば前記開閉弁の上流側の燃料若しくは空気又は燃料と空
気の混合気の圧力を一定にすることで、より正確にデュ
ーティ比制御にて流量を調整できる。流量を一定にすれ
ば、デューティ比制御にてバーナ入圧力を変えることが
でき、ひいては混合気の流速を変えることができるので
ＮＯｘ生成を制御できる。前記開閉弁を流れる流体を一
次的貯蔵可能なバッファータンクを前記開閉弁の上流側
に備えることで、前記開閉弁の周期的な開閉動作によ
る、上流側の機器等への変動圧力による影響を緩和する
ことができる。[0006] It is preferable that a pressure regulating valve, a constant flow rate valve, or a flow rate control valve capable of adjusting the pressure or flow rate of the fluid flowing through the on-off valve is provided upstream of the on-off valve. For example, by making the pressure of fuel or air or a mixture of fuel and air upstream of the on-off valve constant, the flow rate can be more accurately adjusted by duty ratio control. If the flow rate is kept constant, the burner input pressure can be changed by the duty ratio control, and the flow rate of the air-fuel mixture can be changed, so that NOx generation can be controlled. By providing a buffer tank capable of temporarily storing the fluid flowing through the on-off valve on the upstream side of the on-off valve, the effect of the cyclic pressure on the upstream device due to the periodic on-off operation of the on-off valve is reduced. can do.
【０００７】[0007]
【発明の実施の形態】本発明に係る加熱装置について、
実施の形態を図面に基いて説明する。図１において、燃
焼室４内にバーナ５を備え、燃料１０と空気１１をそれ
ぞれバーナ５に供給し予混合燃焼する加熱装置であり、
詳しくは、空気１０をバッファータンク８、定流量弁
６、空気開閉弁１を介しバーナ５に供給する空気流路
と、燃料１１をバッファータンク９、定流量弁７、燃料
開閉弁２を介しバーナ５に供給する燃料流路を備えてい
る。前記空気開閉弁１と前記燃料開閉弁２は周期的な開
閉動作可能なソレノイド式燃料噴出弁の中でも、特に許
容流量が大きいものとして天然ガス自動車用に使用され
ているソレノイド式燃焼噴出弁を使用している。DESCRIPTION OF THE PREFERRED EMBODIMENTS A heating device according to the present invention will be described.
Embodiments will be described with reference to the drawings. In FIG. 1, the heating device includes a burner 5 in a combustion chamber 4, supplies fuel 10 and air 11 to the burner 5, and performs premix combustion.
More specifically, an air flow path for supplying air 10 to the burner 5 through the buffer tank 8, the constant flow valve 6, and the air on-off valve 1, and a fuel 11 for supplying the fuel 11 through the buffer tank 9, the constant flow valve 7, and the fuel on-off valve 2 5 is provided. The air on-off valve 1 and the fuel on-off valve 2 use a solenoid-operated fuel injection valve that is used for a natural gas vehicle because it has a particularly large allowable flow rate among solenoid-operated fuel injection valves that can be opened and closed periodically. are doing.
【０００８】前記空気開閉弁１と前記燃料開閉弁２は制
御器３によってそれぞれ制御されており、周期的開閉動
作の開閉周波数、開時間比率としてデューティー比が変
更可能であり、制御器３は、デューティー比制御手段で
あり、位相差制御手段であるといえる。空気開閉弁１と
燃料開閉弁２の開閉周波数が同じ場合、後者の開閉に対
する前者の開閉の遅れ周期を位相差として変更可能とな
っている。すなわち、図２の（イ）に示すように燃料開
閉弁２の開閉動作を周期Ｔ、開時間ＴGo、閉時間ＴGcで
行い、（ロ）に示すように空気開閉弁１の開閉動作を周
期Ｔ、開時間ＴAo、閉時間ＴAcで行ったときのデューテ
ィー比ＤG、ＤAと位相差Ａは以下のようになる。 ＤG（％）＝ＴGo／（ＴGo＋ＴGc）×１００＝ＴGo／Ｔ
×１００ ＤA（％）＝ＴAo／（ＴAo＋ＴAc）×１００＝ＴAo／Ｔ
×１００ Ａ（％）＝（ｔA−ｔG）／Ｔ×１００ また、制御器３により、前記定流量弁６、７は定流量設
定可能となっており、スパークロッド１７は連続点火放
電可能となっている。以上の構成により、空気１０と燃
料１１がバーナ５に供給される流量は、定流量弁６、７
で設定した流量とデューティー比に比例し、制御器３に
よりデューティー比をデジタル制御することにより正確
且高速に流量を制御できる。また、それぞれの開閉の周
波数を約２０Ｈｚ以上に設定すると、開閉動作による流
体の脈動は配管経路の抵抗で整流されるので、ほぼ一定
の流量でバーナ５に供給することができ、初期にスパー
クロッド１７により点火すると連続的に燃焼し、約２０
Ｈｚ以下のときでも、スパークロッド１７を連続的に点
火放電することにより連続的に燃焼させることが可能で
ある。The air on-off valve 1 and the fuel on-off valve 2 are controlled by a controller 3, respectively, and the duty ratio can be changed as an opening / closing frequency and an opening time ratio of the periodic opening / closing operation. It can be said that it is a duty ratio control means and a phase difference control means. When the opening / closing frequency of the air opening / closing valve 1 and the opening / closing frequency of the fuel opening / closing valve 2 are the same, the delay cycle of the opening / closing of the former with respect to the opening / closing of the latter can be changed as a phase difference. That is, as shown in FIG. 2A, the opening and closing operation of the fuel on-off valve 2 is performed at the cycle T, the opening time TGo, and the closing time TGc, and as shown in FIG. , The duty ratios DG and DA and the phase difference A when the opening time TAo and the closing time TAc are performed are as follows. DG (%) = TGo / (TGo + TGc) × 100 = TGo / T
× 100 DA (%) = TAo / (TAo + TAc) × 100 = TAo / T
× 100 A (%) = (tA−tG) / T × 100 The constant flow rate valves 6 and 7 can be set to a constant flow rate by the controller 3, and the spark rod 17 can be continuously ignited and discharged. ing. With the above configuration, the flow rates at which the air 10 and the fuel 11 are supplied to the burner 5 are constant flow rate valves 6 and 7.
The flow rate is proportional to the flow rate and the duty ratio set in the above, and the flow rate can be accurately and rapidly controlled by digitally controlling the duty ratio by the controller 3. Further, when the frequency of each opening and closing is set to about 20 Hz or more, the pulsation of the fluid due to the opening and closing operation is rectified by the resistance of the piping path, so that it can be supplied to the burner 5 at a substantially constant flow rate. When it is ignited by 17, it burns continuously and about 20
Even when the frequency is less than or equal to Hz, it is possible to continuously burn by spark discharge of the spark rod 17 continuously.
【０００９】ここで、燃焼室４内が９００℃で、空気開
閉弁１の開閉周波数を約２０Ｈｚ以上、燃料開閉弁２の
開閉周波数を約５Ｈｚとすると、空気１０は安定してバ
ーナ５に供給されるが、燃料１１は断続的に供給され、
このことで、燃料１１が休止中に前に供給された燃料１
１が燃焼室４内で希釈され、燃料濃度や酸素濃度が低下
してからゆっくりと燃焼し、ＮＯｘ生成濃度３０ｐｐｍ
程度に削減することができる。逆に、燃料開閉弁２の開
閉周波数を約２０Ｈｚ以上、空気開閉弁２の開閉周波数
を約５Ｈｚとすると、燃料１１は安定してバーナ５に供
給されるが、空気１０は断続的に供給され燃料を希薄状
態で燃焼することができ、ＮＯｘ生成濃度を２５ｐｐｍ
程度にすることができる。さらに、それぞれの開閉弁の
開閉周波数を約１０Ｈｚ、デューティー比３０％とし、
位相差を０％すなわち同時に開閉した場合のＮＯｘ生成
濃度は約５０ｐｐｍであることに対し、位相差を６０％
にすると２５ｐｐｍ、位相差を４０％にするとＮＯｘ生
成濃度は最低値の約２０ｐｐｍとなり、燃焼状態は図２
（ハ）に示すように断続的になり、適切な位相差を持た
せた開閉動作がＮＯｘ生成を削減するのに有効であるこ
とがいえる。このことは、本願の目的である、デューテ
ィー比にて燃料流量、及び空気燃料比を精密に制御し、
それに対応した最適の位相差を制御することで、幅広い
燃焼負荷に対して低ＮＯｘ燃焼が可能である加熱装置を
提供することができ、これは、開閉弁としてソレノイド
式の燃料噴射弁を使用し、開閉弁の開閉動作をデジタル
信号で制御可能としたことで簡単に実現することがで
る。If the temperature in the combustion chamber 4 is 900 ° C., the switching frequency of the air switching valve 1 is about 20 Hz or more, and the switching frequency of the fuel switching valve 2 is about 5 Hz, the air 10 is supplied to the burner 5 stably. However, the fuel 11 is supplied intermittently,
This allows the fuel 1 previously supplied during the pause
1 is diluted in the combustion chamber 4 and slowly burns after the fuel concentration or oxygen concentration decreases, and the NOx generation concentration is 30 ppm.
To a degree. Conversely, when the opening and closing frequency of the fuel on-off valve 2 is about 20 Hz or more and the opening and closing frequency of the air on-off valve 2 is about 5 Hz, the fuel 11 is stably supplied to the burner 5, but the air 10 is intermittently supplied. Fuel can be burned in a lean state and NOx generation concentration is 25ppm
Degree. Further, the opening and closing frequency of each on-off valve is set to about 10 Hz, and the duty ratio is set to 30%.
When the phase difference is 0%, that is, when the NOx generation concentration is simultaneously opened and closed, is about 50 ppm, while the phase difference is 60%
When the phase difference is set to 25 ppm, and when the phase difference is set to 40%, the NOx generation concentration becomes the minimum value of about 20 ppm.
As shown in (c), the switching operation is intermittent and has an appropriate phase difference, which can be said to be effective in reducing NOx generation. This is the purpose of the present application, the fuel flow rate at the duty ratio, and precisely control the air-fuel ratio,
By controlling the optimal phase difference corresponding thereto, it is possible to provide a heating device capable of performing low NOx combustion over a wide range of combustion loads. Further, since the opening / closing operation of the on-off valve can be controlled by a digital signal, it can be easily realized.
【００１０】また、図３に示す加熱装置は、燃焼室４内
にバーナ５を備え、燃料と空気の混合気１５をバッファ
ータンク１４、調圧弁１３、混合気開閉弁１２を介しバ
ーナ５に供給する流路と、混合気開閉弁１２の上流側よ
り分岐しパイロットバーナ１６に供給する流路を備えて
いる。この構成によると、混合気開閉弁１２の開閉を低
周波数で行っても、パイロットバーナ１６による火炎が
バーナ５の火炎を常時再点火するため、連続的な燃焼を
行うことができる。よって、混合気１５がバーナ５に断
続的に供給され、このことで、混合気１５が休止中に前
に供給された混合気１５が燃焼室４内で希釈され、燃料
濃度や酸素濃度が低下してからゆっくりと燃焼し、ＮＯ
ｘ生成濃度を削減することができ、本発明の目的を達成
する加熱装置を提供することができる。The heating device shown in FIG. 3 has a burner 5 in the combustion chamber 4 and supplies a mixture 15 of fuel and air to the burner 5 via a buffer tank 14, a pressure regulating valve 13, and a mixture opening / closing valve 12. And a flow path that branches from the upstream side of the air-fuel mixture on-off valve 12 and supplies the pilot burner 16. According to this configuration, even if the air-fuel mixture on-off valve 12 is opened and closed at a low frequency, the flame from the pilot burner 16 always reignites the flame from the burner 5, so that continuous combustion can be performed. Therefore, the air-fuel mixture 15 is intermittently supplied to the burner 5, whereby the air-fuel mixture 15 previously supplied while the air-fuel mixture 15 is stopped is diluted in the combustion chamber 4, and the fuel concentration and the oxygen concentration decrease. And then burns slowly, NO
A x-concentration can be reduced, and a heating device that achieves the object of the present invention can be provided.
【００１１】[0011]
【発明の効果】本発明に係る加熱装置においては、例え
ば、工業用加熱炉、ボイラ、家庭用給湯器等に使用さ
れ、供給される燃料、空気、若しくは燃料空気混合気の
それぞれの流路に備えられた開閉弁のデューティー比及
び位相差を制御することにより、簡単な構造で流量及び
供給状態を精密に制御し、燃焼量を正確に調整すること
や、ＮＯｘ生成抑制に対して最適な空気燃料比及び位相
差を正確に制御することができる。The heating device according to the present invention is used in, for example, an industrial heating furnace, a boiler, a household water heater, and the like, and supplies the fuel, air, or fuel-air mixture to the respective flow paths. By controlling the duty ratio and phase difference of the provided on-off valve, the flow rate and the supply state are precisely controlled with a simple structure, the combustion amount is adjusted accurately, and the optimal air for NOx generation suppression is controlled. The fuel ratio and the phase difference can be accurately controlled.
【図１】本発明に係る実施の形態で燃料と空気を供給す
る加熱装置の系統図FIG. 1 is a system diagram of a heating device for supplying fuel and air according to an embodiment of the present invention.
【図２】図１に示す加熱装置の燃料と空気の供給状態と
燃焼状態を示すグラフ2 is a graph showing a supply state and a combustion state of fuel and air of the heating device shown in FIG.
【図３】本発明に係る実施の形態で燃料と空気の混合気
を供給する場合の加熱装置の系統図FIG. 3 is a system diagram of a heating device in a case where a mixture of fuel and air is supplied in the embodiment according to the present invention.
１ 空気開閉弁 ２ 燃料開閉弁 ３ 制御器 ４ 燃焼室 ５ バーナ ６、７ 定流量弁 １０ バッファータンク DESCRIPTION OF SYMBOLS 1 Air on-off valve 2 Fuel on-off valve 3 Controller 4 Combustion chamber 5 Burner 6, 7 Constant flow valve 10 Buffer tank
Claims (7)
ーナに燃料若しくは空気又は燃料空気混合気の流体を供
給し燃焼させる加熱装置であって、前記流体の少なくと
も１つの流路に開閉弁を備え、前記開閉弁を周期的に開
閉させ、開時間比率としてデューティー比を変更可能と
するデューティー比制御手段を備えた加熱装置。1. A heating device comprising a combustion chamber provided with a burner for heating, and supplying fuel or air or a fuel-air mixture fluid to the burner for combustion, wherein at least one flow path of the fluid is provided with an on-off valve. And a duty ratio control means for periodically opening and closing the on-off valve to change a duty ratio as an open time ratio.
バーナに燃料と空気を供給し燃焼させる加熱装置であっ
て、前記燃料の流路と前記空気の流路に開閉弁をそれぞ
れ備え、前記それぞれの開閉弁を周期的に開閉させ、そ
れぞれの開閉動作の位相差を変更可能とする位相差制御
手段を備えた加熱装置。2. A heating device comprising: a combustion chamber provided with a heating burner; and fuel and air supplied to the burner and burned, wherein an opening / closing valve is provided in each of the fuel flow path and the air flow path. A heating apparatus comprising: a phase difference control unit that opens and closes each of the on-off valves periodically to change a phase difference of each on-off operation.
ィー比を変更可能とするデューティー比制御手段を備え
た請求項２記載の加熱装置。3. The heating apparatus according to claim 2, further comprising a duty ratio control unit that can change a duty ratio as an open time ratio of the on-off valve.
を１〜２００Ｈｚとした請求項１から３のいずれか１項
に記載の加熱装置。4. The heating device according to claim 1, wherein a frequency of the periodic opening / closing operation of the on-off valve is 1 to 200 Hz.
能な圧力調整弁を前記開閉弁の上流側に備えた請求項１
から４のいずれか１項に記載の加熱装置。5. A pressure adjusting valve, which is capable of adjusting a pressure of a fluid flowing through the on-off valve, is provided upstream of the on-off valve.
The heating device according to any one of items 1 to 4.
能な定流量弁若しくは流量制御弁を前記開閉弁の上流側
に備えた請求項１から５のいずれか１項に記載の加熱装
置。6. The heating device according to claim 1, wherein a constant flow valve or a flow control valve capable of adjusting a flow rate of the fluid flowing through the on-off valve is provided upstream of the on-off valve.
能なバッファータンクを前記開閉弁の上流側に備えた請
求項１から６のいずれか１項に記載の加熱装置。7. The heating device according to claim 1, wherein a buffer tank capable of temporarily storing a fluid flowing through the on-off valve is provided upstream of the on-off valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34853998A JP3781910B2 (en) | 1998-12-08 | 1998-12-08 | Heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34853998A JP3781910B2 (en) | 1998-12-08 | 1998-12-08 | Heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000171032A true JP2000171032A (en) | 2000-06-23 |
| JP3781910B2 JP3781910B2 (en) | 2006-06-07 |
Family
ID=18397700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34853998A Expired - Fee Related JP3781910B2 (en) | 1998-12-08 | 1998-12-08 | Heating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3781910B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003071963A (en) * | 2001-08-31 | 2003-03-12 | Sk Kaken Co Ltd | Cooling layer laminated structure |
| JP2003071964A (en) * | 2001-08-31 | 2003-03-12 | Sk Kaken Co Ltd | Cooling layer laminated structure |
| WO2011108351A1 (en) * | 2010-03-01 | 2011-09-09 | 大陽日酸株式会社 | Method for burning burner |
| WO2012002362A1 (en) | 2010-06-29 | 2012-01-05 | 大陽日酸株式会社 | Burner combustion method |
| WO2012102206A1 (en) | 2011-01-26 | 2012-08-02 | 大陽日酸株式会社 | Burner combustion method |
-
1998
- 1998-12-08 JP JP34853998A patent/JP3781910B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003071963A (en) * | 2001-08-31 | 2003-03-12 | Sk Kaken Co Ltd | Cooling layer laminated structure |
| JP2003071964A (en) * | 2001-08-31 | 2003-03-12 | Sk Kaken Co Ltd | Cooling layer laminated structure |
| JP4558245B2 (en) * | 2001-08-31 | 2010-10-06 | エスケー化研株式会社 | Cooling layer laminate structure |
| JP4558244B2 (en) * | 2001-08-31 | 2010-10-06 | エスケー化研株式会社 | Cooling layer laminate structure |
| CN102834667A (en) * | 2010-03-01 | 2012-12-19 | 大阳日酸株式会社 | Method for burning burner |
| JP2011179751A (en) * | 2010-03-01 | 2011-09-15 | Taiyo Nippon Sanso Corp | Combustion method for burner |
| WO2011108351A1 (en) * | 2010-03-01 | 2011-09-09 | 大陽日酸株式会社 | Method for burning burner |
| CN102834667B (en) * | 2010-03-01 | 2014-12-10 | 大阳日酸株式会社 | Method for burning burner |
| US9157631B2 (en) | 2010-03-01 | 2015-10-13 | Taiyo Nippon Sanso Corporation | Method for burning burner |
| WO2012002362A1 (en) | 2010-06-29 | 2012-01-05 | 大陽日酸株式会社 | Burner combustion method |
| JP2012013258A (en) * | 2010-06-29 | 2012-01-19 | Taiyo Nippon Sanso Corp | Burner combustion method |
| US9581332B2 (en) | 2010-06-29 | 2017-02-28 | Taiyo Nippon Sanso Corporation | Burner combustion method |
| WO2012102206A1 (en) | 2011-01-26 | 2012-08-02 | 大陽日酸株式会社 | Burner combustion method |
| US9261276B2 (en) | 2011-01-26 | 2016-02-16 | Taiyo Nippon Sanso Corporation | Burner combustion method |
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| Publication number | Publication date |
|---|---|
| JP3781910B2 (en) | 2006-06-07 |
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