JPH0526411A - Combustion device - Google Patents
Combustion deviceInfo
- Publication number
- JPH0526411A JPH0526411A JP3173809A JP17380991A JPH0526411A JP H0526411 A JPH0526411 A JP H0526411A JP 3173809 A JP3173809 A JP 3173809A JP 17380991 A JP17380991 A JP 17380991A JP H0526411 A JPH0526411 A JP H0526411A
- Authority
- JP
- Japan
- Prior art keywords
- burner
- exhaust gas
- primary air
- combustion
- fan
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、給湯器や給湯風呂釜な
どの主として家庭用の燃焼装置にかかり、特に窒素酸化
物の生成を抑制することができる燃焼装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus mainly for household use such as a water heater and a hot water bath, and more particularly to a combustion apparatus capable of suppressing the production of nitrogen oxides.
【０００２】[0002]
【従来の技術】従来のこの種の燃焼装置には、図４に示
すものが知られている（特開平３−３９８０１号公報参
照）。すなわち、図４において、１は燃焼フアン、２は
その下流側のバーナ、３はその下流側の燃焼室、４は同
じく熱交換器、５はその下流側の排気ガス通路、６は給
水管、７は出湯管を示し、燃焼フアン１を駆動すると共
にノズル８からバーナ２中にガスを噴出してバーナを燃
焼させると、そのガスの噴出によりバーナ２中に一次空
気を吸引してガスと一次空気とを予混合すると共に燃焼
室３に二次空気を供給して強制燃焼させる燃焼装置にお
いて、排気ガス通路５と燃焼フアン１の吸気口１ａとを
排気連絡管９により連通させ、燃焼フアン１の吸気口１
ａ側が負圧になることを利用して排気ガスの一部を燃焼
フアン１中に導き、その排気ガスの再循環により、緩慢
燃焼になると共に燃焼ガスの熱容量が増加することによ
り火炎温度を低下させて窒素酸化物（ＮＯｘ）の生成を
抑制するようにしている。2. Description of the Related Art As a conventional combustion device of this type, one shown in FIG. 4 is known (see Japanese Patent Application Laid-Open No. 3-39801). That is, in FIG. 4, 1 is a combustion fan, 2 is a burner on the downstream side, 3 is a combustion chamber on the downstream side, 4 is a heat exchanger, 5 is an exhaust gas passage on the downstream side, 6 is a water supply pipe, Reference numeral 7 denotes a hot water outlet pipe, which drives the combustion fan 1 and jets gas from the nozzle 8 into the burner 2 to burn the burner, and the jetting of the gas sucks primary air into the burner 2 In a combustion device that premixes air and supplies secondary air to the combustion chamber 3 for forced combustion, the exhaust gas passage 5 and the intake port 1a of the combustion fan 1 are communicated with each other by an exhaust communication pipe 9, and the combustion fan 1 Intake port 1
By utilizing the fact that the side a becomes negative, a part of the exhaust gas is introduced into the combustion fan 1, and the recirculation of the exhaust gas results in slow combustion and a decrease in the flame temperature due to an increase in the heat capacity of the combustion gas. By doing so, the generation of nitrogen oxides (NOx) is suppressed.
【０００３】[0003]
【発明が解決しようとする課題】ところで、前記の従来
技術においては、再循環された排気ガスが全空気（一次
空気と二次空気）に混合されるため、低ＮＯｘ化の効率
が悪いばかりでなく、低ＮＯｘ化に寄与する排気ガス再
循環率の正確な制御を行なうことができないという問題
がある。すなわち、低ＮＯｘ化は、ガスと一次空気との
予混合気に対する排気ガスの再循環率を適正に行なうこ
とによって達成できるが、従来技術においては、再循環
された排気ガスが全空気に混合されるため、予混合気で
ある一次空気側には再循環排気ガス量の約１／３以下し
か混入せず、しかも、一次空気に対する再循環排気ガス
の混合率を正確に制御することは極めて困難である。By the way, in the above-mentioned prior art, since the recirculated exhaust gas is mixed with all air (primary air and secondary air), the efficiency of reducing NOx is not only bad. However, there is a problem that the exhaust gas recirculation rate that contributes to the reduction of NOx cannot be accurately controlled. That is, the reduction of NOx can be achieved by appropriately performing the recirculation rate of the exhaust gas with respect to the premixed gas of the gas and the primary air, but in the conventional technique, the recirculated exhaust gas is mixed with all the air. Therefore, only about ⅓ or less of the amount of recirculated exhaust gas is mixed into the primary air that is the premixed gas, and it is extremely difficult to accurately control the mixing ratio of the recirculated exhaust gas to the primary air. Is.
【０００４】本発明は、前記の如き従来技術の問題点を
改善し、低ＮＯｘ化を効率的に行なうことができると共
に、その低ＮＯｘ化を正確に制御することができる燃焼
装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention provides a combustion apparatus which solves the problems of the prior art as described above, can efficiently reduce NOx, and can accurately control the reduction of NOx. With the goal.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記の如き目
的を達成するため、燃焼用空気の一部または全部を燃料
と予混合する型式のバーナと、そのバーナの燃焼によっ
て発生した熱を回収する熱交換器と、その熱交換器の下
流側の排気ガス通路とを具備する燃焼装置において、前
記排気ガス通路を流れる排気ガスの一部をバーナ内のみ
に再循環させるように構成したことを特徴とする。In order to achieve the above-mentioned object, the present invention provides a burner of a type for premixing a part or all of combustion air with a fuel, and a heat generated by combustion of the burner. In a combustion device including a heat exchanger for recovery and an exhaust gas passage downstream of the heat exchanger, a part of the exhaust gas flowing through the exhaust gas passage is recirculated only into the burner. Is characterized by.
【０００６】本発明をさらに具体的に述べると、バーナ
中に一次空気を吸引して燃料と予混合すると共に二次空
気を燃焼室に供給して強制燃焼させるようにした燃焼装
置において、前記バーナ内への一次空気吸引側と燃焼室
への二次空気側とを仕切板により区劃して一次空気吸引
側に一次空気室を形成し、その一次空気室と排気ガス通
路とを排気連絡管により連通せしめて排気ガスの一部を
バーナ内のみに再循環させるようにしたことを特徴とす
る。More specifically, the present invention is directed to a burner in which primary air is sucked into the burner to be premixed with fuel and secondary air is supplied to a combustion chamber for forced combustion. A primary air chamber is formed on the primary air suction side by separating the primary air suction side into the inside and the secondary air side into the combustion chamber by a partition plate, and the primary air chamber and the exhaust gas passage are connected to the exhaust communication pipe. It is characterized in that a part of the exhaust gas is recirculated only in the burner by communicating with each other.
【０００７】[0007]
【作用】本発明は、前記の如く、排気ガス通路を流れる
排気ガスの一部をバーナ内のみに再循環させるので、低
ＮＯｘ化を効率よく行なうと共に、排気ガスの再循環率
を制御するとそれがそのまゝ低ＮＯｘ化に寄与して所望
とする低ＮＯｘ化を実現することができる。As described above, according to the present invention, since a part of the exhaust gas flowing through the exhaust gas passage is recirculated only into the burner, NOx can be efficiently reduced and the recirculation rate of the exhaust gas can be controlled. Can contribute to the reduction of NOx and achieve the desired reduction of NOx.
【０００８】[0008]
【実施例】以下、図１ないし図３について本発明の実施
例を説明する。図１は第１の実施例を示すもので、２は
バーナ、３はその下流側の燃焼室、４は同じく熱交換
器、５はその下流側の排気ガス通路、６は給水管、７は
出湯管、８はガスノズル、１０は排気ガス通路に配設し
た吸引型排気フアンである。Embodiments of the present invention will be described below with reference to FIGS. 1 shows a first embodiment, 2 is a burner, 3 is a combustion chamber on the downstream side, 4 is a heat exchanger, 5 is an exhaust gas passage on the downstream side, 6 is a water supply pipe, and 7 is A hot water outlet pipe, 8 is a gas nozzle, and 10 is a suction type exhaust fan arranged in an exhaust gas passage.
【０００９】本発明においては、ノズル８からガスをバ
ーナ２中に噴出したときの一次空気吸引側と排気フアン
駆動時の二次空気通路側とを仕切板１１により区劃して
一次空気吸引側に一次空気室１２を形成し、かつ、その
一次空気室１２に排気連絡管９の一端９ａを開口させる
と共に、その排気連絡管の他端９ｂを前記排気ガス通路
５の排気フアン１０より下流側であって排気フアン１０
に対向して開口させている。In the present invention, the primary air suction side when the gas is ejected from the nozzle 8 into the burner 2 and the secondary air passage side when the exhaust fan is driven are separated by the partition plate 11. A primary air chamber 12 is formed in the first air chamber 12, one end 9a of the exhaust communication pipe 9 is opened in the primary air chamber 12, and the other end 9b of the exhaust communication pipe is located downstream of the exhaust fan 10 in the exhaust gas passage 5. And exhaust fan 10
It is opened to face.
【００１０】このようにすると、排気フアン１０を駆動
すると共にノズル８からバーナ中にガスを噴出させてバ
ーナを強制燃焼させると、排気フアン１０によって強制
的に排出される排気ガスの一部が排気連絡管９の他端９
ｂから排気連絡管９中に圧入され、一端９ａから一次空
気室１２中へ供給されるので、排気ガスの一部を一次空
気室１２中の一次空気と共にバーナ２内のみに再循環さ
せることができる。そして、この実施例は、排気フアン
１０の動圧を利用して排気ガスの一部を再循環させてい
るので、排気ガス再循環のための別の駆動手段を必要と
することがなく、かつ、そのときの排気ガス再循環率の
調整は、図示を省略したダンパーあるいは弁の調節によ
って任意に行なうことがでる。In this way, when the exhaust fan 10 is driven and gas is ejected from the nozzle 8 into the burner to forcibly burn the burner, a part of the exhaust gas forcedly discharged by the exhaust fan 10 is exhausted. The other end 9 of the connecting pipe 9
Since it is press-fitted into the exhaust communication pipe 9 from b and supplied into the primary air chamber 12 from one end 9a, a part of the exhaust gas can be recirculated only in the burner 2 together with the primary air in the primary air chamber 12. it can. Further, in this embodiment, since a part of the exhaust gas is recirculated by utilizing the dynamic pressure of the exhaust fan 10, there is no need for another driving means for the exhaust gas recirculation, and At this time, the exhaust gas recirculation rate can be adjusted arbitrarily by adjusting a damper or a valve (not shown).
【００１１】図２は第２の実施例を示すもので、１は吸
入した外気を装置内に押込むタイプの押込型燃焼フア
ン、２はバーナ、３は燃焼室、４は熱交換器、５は排気
ガス通路、６は給水管、７は出湯管、８はノズルであ
る。この実施例においては、図１に示す実施例と同様
に、ノズル８からガスをバーナ２中に噴出したときの一
次空気吸引側と燃焼フアン駆動時の二次空気通路側とを
仕切板１１によって区劃して一次空気吸引側に一次空気
室１２を形成し、かつ、その一次空気室１２に排気連絡
管９の一端９ａを開口させると共に、他端９ｂを排気ガ
ス通路５中に開口させ、さらに、排気連絡管９に排気再
循環用フアン１３を配設したものである。FIG. 2 shows a second embodiment, in which 1 is a push-type combustion fan of a type that pushes the sucked outside air into the apparatus, 2 is a burner, 3 is a combustion chamber, 4 is a heat exchanger, and 5 is a heat exchanger. Is an exhaust gas passage, 6 is a water supply pipe, 7 is a hot water outlet pipe, and 8 is a nozzle. In this embodiment, similarly to the embodiment shown in FIG. 1, the partition plate 11 separates the primary air suction side when the gas is ejected from the nozzle 8 into the burner 2 and the secondary air passage side when the combustion fan is driven. A primary air chamber 12 is formed on the primary air suction side in a divided manner, and one end 9a of the exhaust communication pipe 9 is opened in the primary air chamber 12 and the other end 9b is opened in the exhaust gas passage 5, Further, an exhaust gas recirculation fan 13 is arranged in the exhaust gas connecting pipe 9.
【００１２】このようにすると、燃焼フアン１を駆動す
ると共にノズル８からバーナ中にガスを噴出させてバー
ナを強制燃焼させながら、排気再循環用フアン１３を駆
動すると、排気ガス通路５を経由して排出される排気ガ
スの一部が、排気連絡管９を経てその一端９ａから一次
空気室１２中に供給されるので、排気ガスの一部を一次
空気室１２中の一次空気と共にバーナ２内のみに再循環
させることができ、かつ、その場合の排気ガス再循環率
の調整は、排気再循環用フアン１３の回転を制御するこ
とにより任意に行なうことができる。With this arrangement, when the combustion fan 1 is driven and the exhaust gas recirculation fan 13 is driven while the gas is ejected from the nozzle 8 into the burner to combust the burner compulsorily, the exhaust gas passage 5 is passed through. Since a part of the exhaust gas discharged through the exhaust communication pipe 9 is supplied into the primary air chamber 12 from one end 9a of the exhaust gas, a part of the exhaust gas is burned in the burner 2 together with the primary air in the primary air chamber 12. The exhaust gas recirculation rate in that case can be arbitrarily adjusted by controlling the rotation of the exhaust recirculation fan 13.
【００１３】図３は、図２に示す実施例の一部を変更し
た第３の実施例を示すもので、１は吸入した外気を装置
内に押込むタイプの押込型燃焼フアン、２はバーナ、３
は燃焼室、４は熱交換器、５は排気ガス通路、６は給水
管、７は出湯管、８はバーナである。この実施例におい
ては、燃焼フアン１の駆動軸に排気再循環用羽根車１４
を固定して燃焼フアン１と排気再循環用羽根車１４とを
一体化させ、かつ、その燃焼フアン１の羽根車と排気再
循環用羽根車１４との間を仕切板１１′により区劃する
と共にその仕切板１１′を延長して前記図１および図２
に示す例と同様の仕切板１１として一次空気吸引側に一
次空気室１２を形成し、さらに、排気再循環用羽根車１
４の吐出側を前記一次空気室１２に指向させると共に、
燃焼フアン１の吐出側を前記仕切板１１，１１′により
区劃された二次空気側に指向させ、排気連絡管９の一端
９ａを前記排気再循環用羽根車１４の吸込側に開口させ
たものである。なお、図３において、１５は燃焼フアン
１のモータである。FIG. 3 shows a third embodiment in which a part of the embodiment shown in FIG. 2 is modified. Reference numeral 1 is a push type combustion fan of a type for pushing the sucked outside air into the apparatus, and 2 is a burner. Three
Is a combustion chamber, 4 is a heat exchanger, 5 is an exhaust gas passage, 6 is a water supply pipe, 7 is a hot water outlet pipe, and 8 is a burner. In this embodiment, the exhaust recirculation impeller 14 is attached to the drive shaft of the combustion fan 1.
Is fixed and the combustion fan 1 and the exhaust gas recirculation impeller 14 are integrated with each other, and the partition plate 11 'separates the space between the impeller of the combustion fan 1 and the exhaust gas recirculation impeller 14. 1 and 2 by extending the partition plate 11 'with
A primary air chamber 12 is formed on the primary air suction side as a partition plate 11 similar to the example shown in FIG.
While directing the discharge side of 4 to the primary air chamber 12,
The discharge side of the combustion fan 1 was directed to the secondary air side partitioned by the partition plates 11 and 11 ', and one end 9a of the exhaust communication pipe 9 was opened to the suction side of the exhaust gas recirculation impeller 14. It is a thing. In FIG. 3, reference numeral 15 denotes a combustion fan 1 motor.
【００１４】この実施例によれば、燃焼フアンと排気再
循環用羽根車とを一体化させたので、図２に示す実施例
のように排気再循環用の別の動力を必要とすることな
く、図２に示す実施例とほゞ同様の作用効果を奏するこ
とができる。たゞし、この実施例の場合の排気ガス再循
環率の調整は、図１に示す実施例と同様にして行なう。According to this embodiment, since the combustion fan and the exhaust gas recirculation impeller are integrated, there is no need for another power source for exhaust gas recirculation as in the embodiment shown in FIG. The same operational effects as those of the embodiment shown in FIG. 2 can be obtained. However, the adjustment of the exhaust gas recirculation rate in this embodiment is performed in the same manner as in the embodiment shown in FIG.
【００１５】前記図１に記載の燃焼装置を使用し、１３
Ａ−１ガス（ＣＨ4８５％、Ｃ3Ｈ8１５％）を過剰空気
１．５にて燃焼させ、排気ガス再循環を行なったときの
ＮＯｘ値を実測した。その結果を表−１に示す。Using the combustion apparatus shown in FIG. 1, 13
A-1 gas (CH 4 85%, C 3 H 8 15%) was burned with excess air 1.5, and the NOx value was measured when exhaust gas recirculation was performed. The results are shown in Table-1.
【００１６】[0016]
【表１】 [Table 1]
【００１７】また、一次空気と二次空気の双方に排気ガ
ス再循環を行なったときのＮＯｘ値を実測した。その結
果を表−２に示す。Further, the NOx value was measured when exhaust gas was recirculated to both the primary air and the secondary air. The results are shown in Table-2.
【００１８】[0018]
【表２】 [Table 2]
【００１９】なお、この場合は、理論酸素量時の燃焼排
ガス体積、および理論最高火炎温度は計算することがで
きない。In this case, the combustion exhaust gas volume at the theoretical oxygen amount and the theoretical maximum flame temperature cannot be calculated.
【００２０】表−１と表−２を比較すれば明らかなよう
に、本発明によれば、従来技術に比較し、低ＮＯｘ化を
効率よく行なうことができると共に、排気ガスの再循環
率を制御して所望とする低ＮＯｘ化を実現することがで
きる。As is clear from the comparison between Table-1 and Table-2, according to the present invention, the NOx can be reduced more efficiently and the exhaust gas recirculation rate can be improved as compared with the prior art. The desired NOx reduction can be realized by controlling.
【００２１】[0021]
【発明の効果】以上述べたように、本発明によれば、低
ＮＯｘ化を効率よく行なうことができると共に、排気ガ
スの再循環率を制御するとそれがそのまゝ低ＮＯｘ化に
寄与して所望する低ＮＯｘ化を実現することができる効
果がある。As described above, according to the present invention, it is possible to efficiently reduce NOx, and when the recirculation rate of exhaust gas is controlled, it contributes to the reduction of NOx. There is an effect that desired NOx reduction can be realized.
【図１】本発明の一実施例を示す給湯器の構成図FIG. 1 is a configuration diagram of a water heater showing an embodiment of the present invention
【図２】本発明の他の実施例を示す給湯器の構成図FIG. 2 is a configuration diagram of a water heater showing another embodiment of the present invention.
【図３】本発明のさらに他の実施例を示す給湯器の構成
図FIG. 3 is a configuration diagram of a water heater showing still another embodiment of the present invention.
【図４】従来の低ＮＯｘ型給湯器の一例を示す構成図FIG. 4 is a configuration diagram showing an example of a conventional low NOx type water heater.
１…燃焼フアン、２…バーナ、３…燃焼室、４…熱交換
器、５…排気ガス通路、６…給水管、７…出湯管、８…
ノズル、９…排気連絡管、１０…排気フアン、１１，１
１′…仕切板、１２…一次空気室、１３…排気再循環用
フアン、１４…排気再循環用羽根車、１５…燃焼フアン
のモータ。1 ... Combustion fan, 2 ... Burner, 3 ... Combustion chamber, 4 ... Heat exchanger, 5 ... Exhaust gas passage, 6 ... Water supply pipe, 7 ... Hot water pipe, 8 ...
Nozzle, 9 ... Exhaust connecting pipe, 10 ... Exhaust fan, 11, 1
1 '... Partition plate, 12 ... Primary air chamber, 13 ... Exhaust gas recirculation fan, 14 ... Exhaust gas recirculation impeller, 15 ... Combustion fan motor.
Claims (4)
混合する型式のバーナと、そのバーナの燃焼によって発
生した熱を回収する熱交換器と、その熱交換器の下流側
の排気ガス通路とを具備する燃焼装置において、前記排
気ガス通路を流れる排気ガスの一部を前記バーナ内のみ
に再循環させるように構成したことを特徴とする燃焼装
置。1. A burner of a type for premixing a part or all of combustion air with a fuel, a heat exchanger for recovering heat generated by combustion of the burner, and exhaust gas downstream of the heat exchanger. And a passage, wherein a part of the exhaust gas flowing through the exhaust gas passage is recirculated only into the burner.
および熱交換器と、その熱交換器の下流側の排気ガス通
路とを具備し、かつ、その排気ガス通路側に吸引型排気
フアンを配設し、前記バーナ中に燃料を噴射すると共に
排気フアンを駆動すると、バーナ中に一次空気を吸引し
て燃料と予混合するとと共に二次空気を燃焼室に供給し
て強制燃焼せしめるようにした燃焼装置において、前記
バーナ内への一次空気吸引側と燃焼室へ供給される二次
空気側とを仕切板により区劃して一次空気吸引側に一次
空気室を形成し、その一次空気室と前記排気ガス通路と
を排気通路管により連通させたことを特徴とする燃焼装
置。2. A burner, a combustion chamber and a heat exchanger on the downstream side of the burner, and an exhaust gas passage on the downstream side of the heat exchanger, and a suction type exhaust fan on the exhaust gas passage side. When the fuel is injected into the burner and the exhaust fan is driven, the primary air is sucked into the burner and premixed with the fuel, and the secondary air is supplied to the combustion chamber for forced combustion. In the combustion device described above, a partition plate separates the primary air suction side into the burner and the secondary air side supplied to the combustion chamber to form a primary air chamber on the primary air suction side, and the primary air chamber A combustion apparatus, wherein the exhaust gas passage and the exhaust gas passage are connected by an exhaust passage pipe.
ーナと、そのバーナの下流側の燃焼室および熱交換器
と、その熱交換器の下流側の排気ガス通路とを具備し、
前記バーナ中に燃料を噴射すると共に燃焼フアンを駆動
すると、バーナ中に一次空気を吸引して燃料と予混合す
ると共に二次空気を燃焼室に供給して強制燃焼せしめる
ようにした燃焼装置において、前記バーナ内への一次空
気吸引側と燃焼室へ供給される二次空気側とを仕切板に
より区劃して一次空気吸引側に一次空気室を形成し、そ
の一次空気室と前記排気ガス通路とを排気再循環フアン
を有する排気連絡管により連通させたことを特徴とする
燃焼装置。3. A push-in combustion fan, a burner downstream thereof, a combustion chamber and a heat exchanger downstream of the burner, and an exhaust gas passage downstream of the heat exchanger,
When injecting fuel into the burner and driving a combustion fan, primary air is sucked into the burner to be premixed with the fuel, and secondary air is supplied to the combustion chamber so that the combustor is forcedly combusted. The primary air suction side into the burner and the secondary air side supplied to the combustion chamber are separated by a partition plate to form a primary air chamber on the primary air suction side, and the primary air chamber and the exhaust gas passage And an exhaust communication pipe having an exhaust gas recirculation fan.
ーナと、そのバーナの下流側の燃焼室および熱交換器
と、その熱交換器の下流側の排気ガス通路とを具備し、
前記バーナ中に燃料を噴射すると共に燃焼フアンを駆動
すると、バーナ中に一次空気を吸引して燃料と予混合す
ると共に二次空気を燃焼室に供給して強制燃焼せしめる
ようにした燃焼装置において、前記燃焼フアンの駆動軸
に排気再循環用羽根車を固定して燃焼フアンと排気再循
環用羽根車とを一体化し、かつ、その燃焼フアンによる
空気流路を前記二次空気側に指向せしめると共に、排気
再循環用羽根車による空気流路を前記一次空気吸引側に
指向せしめ、その一次空気吸引側と二次空気側とを仕切
板により区劃して一次空気吸引側に一次空気室を形成
し、前記排気再循環用羽根車の吸込口を排気連絡管を介
して前記排気ガス通路と連通せしめたことを特徴とする
燃焼装置。4. A push-in combustion fan, a burner downstream thereof, a combustion chamber and a heat exchanger downstream of the burner, and an exhaust gas passage downstream of the heat exchanger,
When injecting fuel into the burner and driving a combustion fan, primary air is sucked into the burner to be premixed with the fuel, and secondary air is supplied to the combustion chamber so that the combustor is forcedly combusted. An exhaust gas recirculation impeller is fixed to a drive shaft of the combustion fan to integrate the combustion fan and the exhaust gas recirculation impeller, and an air flow path by the combustion fan is directed to the secondary air side. , The air flow path by the exhaust gas recirculation impeller is directed to the primary air suction side, and the primary air suction side and the secondary air side are separated by a partition plate to form a primary air chamber on the primary air suction side. The combustion device is characterized in that the suction port of the exhaust gas recirculation impeller is connected to the exhaust gas passage via an exhaust communication pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173809A JPH0526411A (en) | 1991-07-15 | 1991-07-15 | Combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173809A JPH0526411A (en) | 1991-07-15 | 1991-07-15 | Combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0526411A true JPH0526411A (en) | 1993-02-02 |
Family
ID=15967563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3173809A Pending JPH0526411A (en) | 1991-07-15 | 1991-07-15 | Combustion device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0526411A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7712739B2 (en) | 2004-05-11 | 2010-05-11 | Ricoh Company, Ltd. | Conveying apparatus, inkjet recording apparatus, and method for controlling conveyance |
| US9950125B2 (en) | 2012-04-06 | 2018-04-24 | Antares Pharma, Inc. | Needle assisted jet injection administration of testosterone compositions |
-
1991
- 1991-07-15 JP JP3173809A patent/JPH0526411A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7712739B2 (en) | 2004-05-11 | 2010-05-11 | Ricoh Company, Ltd. | Conveying apparatus, inkjet recording apparatus, and method for controlling conveyance |
| US9950125B2 (en) | 2012-04-06 | 2018-04-24 | Antares Pharma, Inc. | Needle assisted jet injection administration of testosterone compositions |
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